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[Git][ghc/ghc][wip/T26166] 2 commits: rts: Dynamically initialize built-in closures
by Ben Gamari (＠bgamari) 26 Sep '25

26 Sep '25

Ben Gamari pushed to branch wip/T26166 at Glasgow Haskell Compiler / GHC Commits: 2c168cf3 by Ben Gamari at 2025-09-26T13:23:49-04:00 rts: Dynamically initialize built-in closures - - - - - 6044a105 by Ben Gamari at 2025-09-26T13:23:49-04:00 rts: Avoid static symbol references to ghc-internal - - - - - 26 changed files: - compiler/GHC/HsToCore/Foreign/C.hs - + libraries/ghc-internal/cbits/RtsIface.c - libraries/ghc-internal/ghc-internal.cabal.in - + libraries/ghc-internal/include/RtsIfaceSymbols.h - + rts/BuiltinClosures.c - + rts/BuiltinClosures.h - rts/Compact.cmm - rts/ContinuationOps.cmm - rts/Exception.cmm - rts/Prelude.h - rts/PrimOps.cmm - rts/RtsAPI.c - rts/RtsStartup.c - + rts/RtsToHsIface.c - rts/Schedule.c - rts/StgMiscClosures.cmm - rts/StgStdThunks.cmm - rts/include/Rts.h - rts/include/RtsAPI.h - rts/include/rts/Constants.h - + rts/include/rts/RtsToHsIface.h - rts/include/stg/MiscClosures.h - rts/posix/Signals.c - rts/rts.cabal - rts/wasm/JSFFI.c - utils/deriveConstants/Main.hs Changes: ===================================== compiler/GHC/HsToCore/Foreign/C.hs ===================================== @@ -517,8 +517,8 @@ mkFExportCBits dflags c_nm maybe_target arg_htys res_hty is_IO_res_ty cc text "rts_apply" <> parens ( cap <> (if is_IO_res_ty - then text "runIO_closure" - else text "runNonIO_closure") + then text "ghc_hs_iface->runIO_closure" + else text "ghc_hs_iface->runNonIO_closure") <> comma <> expr_to_run ) <+> comma ===================================== libraries/ghc-internal/cbits/RtsIface.c ===================================== @@ -0,0 +1,42 @@ +/* + * (c) The GHC Team, 2025-2026 + * + * RTS/ghc-internal interface + * + * See Note [RTS/ghc-internal interface]. + */ + +#include "Rts.h" + +void init_ghc_hs_iface(void) __attribute__((constructor)); + +#define CLOSURE(module, symbol) \ + extern StgClosure ghczminternal_##module##_##symbol; + +#define UNDEF_CLOSURE(module, symbol) + +#define INFO_TBL(module, symbol) \ + extern StgInfoTable ghczminternal_##module##_##symbol; + +#include "RtsIfaceSymbols.h" + +#undef CLOSURE +#undef INFO_TBL + +#define CLOSURE(module, symbol) \ + .symbol = &ghczminternal_##module##_##symbol, + +#define UNDEF_CLOSURE(module, symbol) \ + .symbol = NULL, + +#define INFO_TBL(module, symbol) \ + .symbol = &ghczminternal_##module##_##symbol, + +HsIface the_ghc_hs_iface = { +#include "RtsIfaceSymbols.h" +}; + +void init_ghc_hs_iface(void) +{ + ghc_hs_iface = &the_ghc_hs_iface; +} ===================================== libraries/ghc-internal/ghc-internal.cabal.in ===================================== @@ -43,6 +43,7 @@ extra-source-files: include/winio_structs.h include/WordSize.h include/HsIntegerGmp.h.in + include/RtsIfaceSymbols.h install-sh source-repository head @@ -457,6 +458,7 @@ Library cbits/vectorQuotRem.c cbits/word2float.c cbits/Stack_c.c + cbits/RtsIface.c cmm-sources: cbits/StackCloningDecoding.cmm ===================================== libraries/ghc-internal/include/RtsIfaceSymbols.h ===================================== @@ -0,0 +1,59 @@ +// See Note [RTS/ghc-internal interface]. + +#if defined(mingw32_HOST_OS) +CLOSURE(GHCziInternalziEventziWindows, processRemoteCompletion_closure) +#else +UNDEF_CLOSURE(GHCziInternalziEventziWindows, processRemoteCompletion_closure) +#endif +CLOSURE(GHCziInternalziTopHandler, runIO_closure) +CLOSURE(GHCziInternalziTopHandler, runNonIO_closure) +CLOSURE(GHCziInternalziTuple, Z0T_closure) +CLOSURE(GHCziInternalziTypes, True_closure) +CLOSURE(GHCziInternalziTypes, False_closure) +CLOSURE(GHCziInternalziPack, unpackCString_closure) +CLOSURE(GHCziInternalziWeakziFinalizze, runFinalizzerBatch_closure) +CLOSURE(GHCziInternalziIOziException, stackOverflow_closure) +CLOSURE(GHCziInternalziIOziException, heapOverflow_closure) +CLOSURE(GHCziInternalziIOziException, allocationLimitExceeded_closure) +CLOSURE(GHCziInternalziIOziException, blockedIndefinitelyOnMVar_closure) +CLOSURE(GHCziInternalziIOziException, blockedIndefinitelyOnSTM_closure) +CLOSURE(GHCziInternalziIOziException, cannotCompactFunction_closure) +CLOSURE(GHCziInternalziIOziException, cannotCompactPinned_closure) +CLOSURE(GHCziInternalziIOziException, cannotCompactMutable_closure) +CLOSURE(GHCziInternalziControlziExceptionziBase, nonTermination_closure) +CLOSURE(GHCziInternalziControlziExceptionziBase, nestedAtomically_closure) +CLOSURE(GHCziInternalziControlziExceptionziBase, noMatchingContinuationPrompt_closure) +CLOSURE(GHCziInternalziEventziThread, blockedOnBadFD_closure) +CLOSURE(GHCziInternalziConcziSync, runSparks_closure) +CLOSURE(GHCziInternalziConcziIO, ensureIOManagerIsRunning_closure) +CLOSURE(GHCziInternalziConcziIO, interruptIOManager_closure) +CLOSURE(GHCziInternalziConcziIO, ioManagerCapabilitiesChanged_closure) +CLOSURE(GHCziInternalziConcziSignal, runHandlersPtr_closure) +CLOSURE(GHCziInternalziTopHandler, flushStdHandles_closure) +CLOSURE(GHCziInternalziTopHandler, runMainIO_closure) +INFO_TBL(GHCziInternalziTypes, Czh_con_info) +INFO_TBL(GHCziInternalziTypes, Izh_con_info) +INFO_TBL(GHCziInternalziTypes, Fzh_con_info) +INFO_TBL(GHCziInternalziTypes, Dzh_con_info) +INFO_TBL(GHCziInternalziTypes, Wzh_con_info) +CLOSURE(GHCziInternalziPrimziPanic, absentSumFieldError_closure) +CLOSURE(GHCziInternalziAllocationLimitHandler, runAllocationLimitHandler_closure) +INFO_TBL(GHCziInternalziPtr, Ptr_con_info) +INFO_TBL(GHCziInternalziPtr, FunPtr_con_info) +INFO_TBL(GHCziInternalziInt, I8zh_con_info) +INFO_TBL(GHCziInternalziInt, I16zh_con_info) +INFO_TBL(GHCziInternalziInt, I32zh_con_info) +INFO_TBL(GHCziInternalziInt, I64zh_con_info) +INFO_TBL(GHCziInternalziWord, W8zh_con_info) +INFO_TBL(GHCziInternalziWord, W16zh_con_info) +INFO_TBL(GHCziInternalziWord, W32zh_con_info) +INFO_TBL(GHCziInternalziWord, W64zh_con_info) +INFO_TBL(GHCziInternalziStable, StablePtr_con_info) +CLOSURE(GHCziInternalziStackziCloneStack, StackSnapshot_closure) +CLOSURE(GHCziInternalziExceptionziType, divZZeroException_closure) +CLOSURE(GHCziInternalziExceptionziType, underflowException_closure) +CLOSURE(GHCziInternalziExceptionziType, overflowException_closure) +CLOSURE(GHCziInternalziCString, unpackCStringzh_closure) +INFO_TBL(GHCziInternalziCString, unpackCStringzh_info) +INFO_TBL(GHCziInternalziCString, unpackCStringUtf8zh_info) + ===================================== rts/BuiltinClosures.c ===================================== @@ -0,0 +1,29 @@ +#include "Rts.h" +#include "BuiltinClosures.h" + +/* + * Note [CHARLIKE and INTLIKE closures] + * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + * These are static representations of Chars and small Ints, so that + * we can remove dynamic Chars and Ints during garbage collection and + * replace them with references to the static objects. + */ + +StgIntCharlikeClosure stg_INTLIKE_closure[MAX_INTLIKE - MIN_INTLIKE + 1]; +StgIntCharlikeClosure stg_CHARLIKE_closure[MAX_CHARLIKE - MIN_CHARLIKE + 1]; + +void initBuiltinClosures() { + // INTLIKE closures + for (int i = MIN_INTLIKE; i <= MAX_INTLIKE - MIN_INTLIKE; i++) { + StgIntCharlikeClosure *c = &stg_INTLIKE_closure[i]; + SET_HDR((StgClosure* ) c, ghc_hs_iface->Izh_con_info, CCS_SYSTEM_OR_NULL); + c->data = MIN_INTLIKE + i; + } + + // CHARLIKE closures + for (int i = MIN_CHARLIKE; i <= MAX_CHARLIKE - MIN_CHARLIKE; i++) { + StgIntCharlikeClosure *c = &stg_CHARLIKE_closure[i]; + SET_HDR((StgClosure* ) c, ghc_hs_iface->Czh_con_info, CCS_SYSTEM_OR_NULL); + c->data = MIN_CHARLIKE + i; + } +} ===================================== rts/BuiltinClosures.h ===================================== @@ -0,0 +1 @@ +void initBuiltinClosures(void); ===================================== rts/Compact.cmm ===================================== @@ -10,9 +10,6 @@ #include "Cmm.h" #include "sm/ShouldCompact.h" -import CLOSURE ghczminternal_GHCziInternalziIOziException_cannotCompactFunction_closure; -import CLOSURE ghczminternal_GHCziInternalziIOziException_cannotCompactMutable_closure; -import CLOSURE ghczminternal_GHCziInternalziIOziException_cannotCompactPinned_closure; #if !defined(UnregisterisedCompiler) import CLOSURE g0; import CLOSURE large_alloc_lim; @@ -124,7 +121,7 @@ eval: SMALL_MUT_ARR_PTRS_CLEAN, SMALL_MUT_ARR_PTRS_DIRTY, COMPACT_NFDATA: { - jump stg_raisezh(ghczminternal_GHCziInternalziIOziException_cannotCompactMutable_closure); + jump stg_raisezh(HsIface_cannotCompactMutable_closure(W_[ghc_hs_iface])); } // We shouldn't see any functions, if this data structure was NFData. @@ -139,7 +136,7 @@ eval: BCO, PAP, CONTINUATION: { - jump stg_raisezh(ghczminternal_GHCziInternalziIOziException_cannotCompactFunction_closure); + jump stg_raisezh(HsIface_cannotCompactFunction_closure(W_[ghc_hs_iface])); } case ARR_WORDS: { @@ -147,7 +144,7 @@ eval: (should) = ccall shouldCompact(compact "ptr", p "ptr"); if (should == SHOULDCOMPACT_IN_CNF) { P_[pp] = p; return(); } if (should == SHOULDCOMPACT_PINNED) { - jump stg_raisezh(ghczminternal_GHCziInternalziIOziException_cannotCompactPinned_closure); + jump stg_raisezh(HsIface_cannotCompactPinned_closure(W_[ghc_hs_iface])); } CHECK_HASH(); ===================================== rts/ContinuationOps.cmm ===================================== @@ -12,7 +12,6 @@ #include "Cmm.h" -import CLOSURE ghczminternal_GHCziInternalziControlziExceptionziBase_noMatchingContinuationPrompt_closure; #if !defined(UnregisterisedCompiler) import CLOSURE ALLOC_RTS_ctr; import CLOSURE ALLOC_RTS_tot; @@ -104,7 +103,7 @@ stg_control0zh_ll // explicit stack // see Note [When capturing the continuation fails] in Continuation.c if (cont == NULL) (likely: False) { - jump stg_raisezh(ghczminternal_GHCziInternalziControlziExceptionziBase_noMatchingContinuationPrompt_closure); + jump stg_raisezh(HsIface_noMatchingContinuationPrompt_closure(W_[ghc_hs_iface])); } W_ apply_mask_frame; ===================================== rts/Exception.cmm ===================================== @@ -13,10 +13,6 @@ #include "Cmm.h" #include "RaiseAsync.h" -import CLOSURE ghczminternal_GHCziInternalziTypes_True_closure; -import CLOSURE ghczminternal_GHCziInternalziExceptionziType_divZZeroException_closure; -import CLOSURE ghczminternal_GHCziInternalziExceptionziType_underflowException_closure; -import CLOSURE ghczminternal_GHCziInternalziExceptionziType_overflowException_closure; #if !defined(UnregisterisedCompiler) import CLOSURE CATCHF_PUSHED_ctr; import CLOSURE RtsFlags; @@ -539,7 +535,7 @@ retry_pop_stack: Sp(10) = exception; Sp(9) = stg_raise_ret_info; Sp(8) = exception; - Sp(7) = ghczminternal_GHCziInternalziTypes_True_closure; // True <=> an exception + Sp(7) = HsIface_True_closure(W_[ghc_hs_iface]); // True <=> an exception Sp(6) = stg_ap_ppv_info; Sp(5) = 0; Sp(4) = stg_ap_n_info; @@ -650,17 +646,17 @@ stg_raiseIOzh (P_ exception) stg_raiseDivZZerozh () { - jump stg_raisezh(ghczminternal_GHCziInternalziExceptionziType_divZZeroException_closure); + jump stg_raisezh(HsIface_divZZeroException_closure(W_[ghc_hs_iface])); } stg_raiseUnderflowzh () { - jump stg_raisezh(ghczminternal_GHCziInternalziExceptionziType_underflowException_closure); + jump stg_raisezh(HsIface_underflowException_closure(W_[ghc_hs_iface])); } stg_raiseOverflowzh () { - jump stg_raisezh(ghczminternal_GHCziInternalziExceptionziType_overflowException_closure); + jump stg_raisezh(HsIface_overflowException_closure(W_[ghc_hs_iface])); } /* The FFI doesn't support variadic C functions so we can't directly expose ===================================== rts/Prelude.h ===================================== @@ -19,126 +19,69 @@ #define PRELUDE_CLOSURE(i) extern StgClosure (i) #endif -/* See Note [Wired-in exceptions are not CAFfy] in GHC.Core.Make. */ -PRELUDE_CLOSURE(ghczminternal_GHCziInternalziPrimziPanic_absentSumFieldError_closure); /* Define canonical names so we can abstract away from the actual * modules these names are defined in. */ -PRELUDE_CLOSURE(ghczminternal_GHCziInternalziTuple_Z0T_closure); -PRELUDE_CLOSURE(ghczminternal_GHCziInternalziTypes_True_closure); -PRELUDE_CLOSURE(ghczminternal_GHCziInternalziTypes_False_closure); -PRELUDE_CLOSURE(ghczminternal_GHCziInternalziPack_unpackCString_closure); -PRELUDE_CLOSURE(ghczminternal_GHCziInternalziPack_unpackCStringUtf8_closure); -PRELUDE_CLOSURE(ghczminternal_GHCziInternalziWeak_runFinalizzerBatch_closure); -PRELUDE_CLOSURE(ghczminternal_GHCziInternalziWeakziFinalizze_runFinalizzerBatch_closure); - #if defined(IN_STG_CODE) extern W_ ZCMain_main_closure[]; #else extern StgClosure ZCMain_main_closure; #endif -PRELUDE_CLOSURE(ghczminternal_GHCziInternalziIOziException_stackOverflow_closure); -PRELUDE_CLOSURE(ghczminternal_GHCziInternalziIOziException_heapOverflow_closure); -PRELUDE_CLOSURE(ghczminternal_GHCziInternalziIOziException_allocationLimitExceeded_closure); -PRELUDE_CLOSURE(ghczminternal_GHCziInternalziIOziException_blockedIndefinitelyOnMVar_closure); -PRELUDE_CLOSURE(ghczminternal_GHCziInternalziIOziException_blockedIndefinitelyOnSTM_closure); -PRELUDE_CLOSURE(ghczminternal_GHCziInternalziIOziException_cannotCompactFunction_closure); -PRELUDE_CLOSURE(ghczminternal_GHCziInternalziIOziException_cannotCompactPinned_closure); -PRELUDE_CLOSURE(ghczminternal_GHCziInternalziIOziException_cannotCompactMutable_closure); -PRELUDE_CLOSURE(ghczminternal_GHCziInternalziControlziExceptionziBase_nonTermination_closure); -PRELUDE_CLOSURE(ghczminternal_GHCziInternalziControlziExceptionziBase_nestedAtomically_closure); -PRELUDE_CLOSURE(ghczminternal_GHCziInternalziEventziThread_blockedOnBadFD_closure); -PRELUDE_CLOSURE(ghczminternal_GHCziInternalziExceptionziType_divZZeroException_closure); -PRELUDE_CLOSURE(ghczminternal_GHCziInternalziExceptionziType_underflowException_closure); -PRELUDE_CLOSURE(ghczminternal_GHCziInternalziExceptionziType_overflowException_closure); - -PRELUDE_CLOSURE(ghczminternal_GHCziInternalziConcziSync_runSparks_closure); -PRELUDE_CLOSURE(ghczminternal_GHCziInternalziConcziIO_ensureIOManagerIsRunning_closure); -PRELUDE_CLOSURE(ghczminternal_GHCziInternalziConcziIO_interruptIOManager_closure); -PRELUDE_CLOSURE(ghczminternal_GHCziInternalziConcziIO_ioManagerCapabilitiesChanged_closure); -PRELUDE_CLOSURE(ghczminternal_GHCziInternalziConcziSignal_runHandlersPtr_closure); -#if defined(mingw32_HOST_OS) -PRELUDE_CLOSURE(ghczminternal_GHCziInternalziEventziWindows_processRemoteCompletion_closure); -#endif - -PRELUDE_CLOSURE(ghczminternal_GHCziInternalziTopHandler_flushStdHandles_closure); -PRELUDE_CLOSURE(ghczminternal_GHCziInternalziTopHandler_runMainIO_closure); -PRELUDE_CLOSURE(ghczminternal_GHCziInternalziAllocationLimitHandler_runAllocationLimitHandler_closure); - -PRELUDE_INFO(ghczminternal_GHCziInternalziCString_unpackCStringzh_info); -PRELUDE_INFO(ghczminternal_GHCziInternalziTypes_Czh_con_info); -PRELUDE_INFO(ghczminternal_GHCziInternalziTypes_Izh_con_info); -PRELUDE_INFO(ghczminternal_GHCziInternalziTypes_Fzh_con_info); -PRELUDE_INFO(ghczminternal_GHCziInternalziTypes_Dzh_con_info); -PRELUDE_INFO(ghczminternal_GHCziInternalziTypes_Wzh_con_info); - -PRELUDE_INFO(ghczminternal_GHCziInternalziPtr_Ptr_con_info); -PRELUDE_INFO(ghczminternal_GHCziInternalziPtr_FunPtr_con_info); -PRELUDE_INFO(ghczminternal_GHCziInternalziInt_I8zh_con_info); -PRELUDE_INFO(ghczminternal_GHCziInternalziInt_I16zh_con_info); -PRELUDE_INFO(ghczminternal_GHCziInternalziInt_I32zh_con_info); -PRELUDE_INFO(ghczminternal_GHCziInternalziInt_I64zh_con_info); -PRELUDE_INFO(ghczminternal_GHCziInternalziWord_W8zh_con_info); -PRELUDE_INFO(ghczminternal_GHCziInternalziWord_W16zh_con_info); -PRELUDE_INFO(ghczminternal_GHCziInternalziWord_W32zh_con_info); -PRELUDE_INFO(ghczminternal_GHCziInternalziWord_W64zh_con_info); -PRELUDE_INFO(ghczminternal_GHCziInternalziStable_StablePtr_con_info); - -#define Unit_closure (&(ghczminternal_GHCziInternalziTuple_Z0T_closure)) -#define True_closure (&(ghczminternal_GHCziInternalziTypes_True_closure)) -#define False_closure (&(ghczminternal_GHCziInternalziTypes_False_closure)) -#define unpackCString_closure (&(ghczminternal_GHCziInternalziPack_unpackCString_closure)) -#define runFinalizerBatch_closure (&(ghczminternal_GHCziInternalziWeakziFinalizze_runFinalizzerBatch_closure)) +#define Unit_closure ghc_hs_iface->Z0T_closure +#define True_closure ghc_hs_iface->True_closure +#define False_closure ghc_hs_iface->False_closure +#define unpackCString_closure ghc_hs_iface->unpackCString_closure +#define runFinalizerBatch_closure ghc_hs_iface->runFinalizzerBatch_closure #define mainIO_closure (&ZCMain_main_closure) -#define runSparks_closure (&(ghczminternal_GHCziInternalziConcziSync_runSparks_closure)) -#define ensureIOManagerIsRunning_closure (&(ghczminternal_GHCziInternalziConcziIO_ensureIOManagerIsRunning_closure)) -#define interruptIOManager_closure (&(ghczminternal_GHCziInternalziConcziIO_interruptIOManager_closure)) -#define ioManagerCapabilitiesChanged_closure (&(ghczminternal_GHCziInternalziConcziIO_ioManagerCapabilitiesChanged_closure)) -#define runHandlersPtr_closure (&(ghczminternal_GHCziInternalziConcziSignal_runHandlersPtr_closure)) +#define runSparks_closure ghc_hs_iface->runSparks_closure +#define ensureIOManagerIsRunning_closure ghc_hs_iface->ensureIOManagerIsRunning_closure +#define interruptIOManager_closure ghc_hs_iface->interruptIOManager_closure +#define ioManagerCapabilitiesChanged_closure ghc_hs_iface->ioManagerCapabilitiesChanged_closure +#define runHandlersPtr_closure ghc_hs_iface->runHandlersPtr_closure #if defined(mingw32_HOST_OS) -#define processRemoteCompletion_closure (&(ghczminternal_GHCziInternalziEventziWindows_processRemoteCompletion_closure)) +#define processRemoteCompletion_closure ghc_hs_iface->processRemoteCompletion_closure #endif -#define runAllocationLimitHandler_closure (&(ghczminternal_GHCziInternalziAllocationLimitHandler_runAllocationLimitHandler_closure)) - -#define flushStdHandles_closure (&(ghczminternal_GHCziInternalziTopHandler_flushStdHandles_closure)) -#define runMainIO_closure (&(ghczminternal_GHCziInternalziTopHandler_runMainIO_closure)) - -#define stackOverflow_closure (&(ghczminternal_GHCziInternalziIOziException_stackOverflow_closure)) -#define heapOverflow_closure (&(ghczminternal_GHCziInternalziIOziException_heapOverflow_closure)) -#define allocationLimitExceeded_closure (&(ghczminternal_GHCziInternalziIOziException_allocationLimitExceeded_closure)) -#define blockedIndefinitelyOnMVar_closure (&(ghczminternal_GHCziInternalziIOziException_blockedIndefinitelyOnMVar_closure)) -#define blockedIndefinitelyOnSTM_closure (&(ghczminternal_GHCziInternalziIOziException_blockedIndefinitelyOnSTM_closure)) -#define cannotCompactFunction_closure (&(ghczminternal_GHCziInternalziIOziException_cannotCompactFunction_closure)) -#define cannotCompactPinned_closure (&(ghczminternal_GHCziInternalziIOziException_cannotCompactPinned_closure)) -#define cannotCompactMutable_closure (&(ghczminternal_GHCziInternalziIOziException_cannotCompactMutable_closure)) -#define nonTermination_closure (&(ghczminternal_GHCziInternalziControlziExceptionziBase_nonTermination_closure)) -#define nestedAtomically_closure (&(ghczminternal_GHCziInternalziControlziExceptionziBase_nestedAtomically_closure)) -#define absentSumFieldError_closure (&(ghczminternal_GHCziInternalziPrimziPanic_absentSumFieldError_closure)) -#define underflowException_closure (&(ghczminternal_GHCziInternalziExceptionziType_underflowException_closure)) -#define overflowException_closure (&(ghczminternal_GHCziInternalziExceptionziType_overflowException_closure)) -#define divZeroException_closure (&(ghczminternal_GHCziInternalziExceptionziType_divZZeroException_closure)) - -#define blockedOnBadFD_closure (&(ghczminternal_GHCziInternalziEventziThread_blockedOnBadFD_closure)) - -#define Czh_con_info (&(ghczminternal_GHCziInternalziTypes_Czh_con_info)) -#define Izh_con_info (&(ghczminternal_GHCziInternalziTypes_Izh_con_info)) -#define Fzh_con_info (&(ghczminternal_GHCziInternalziTypes_Fzh_con_info)) -#define Dzh_con_info (&(ghczminternal_GHCziInternalziTypes_Dzh_con_info)) -#define Wzh_con_info (&(ghczminternal_GHCziInternalziTypes_Wzh_con_info)) -#define W8zh_con_info (&(ghczminternal_GHCziInternalziWord_W8zh_con_info)) -#define W16zh_con_info (&(ghczminternal_GHCziInternalziWord_W16zh_con_info)) -#define W32zh_con_info (&(ghczminternal_GHCziInternalziWord_W32zh_con_info)) -#define W64zh_con_info (&(ghczminternal_GHCziInternalziWord_W64zh_con_info)) -#define I8zh_con_info (&(ghczminternal_GHCziInternalziInt_I8zh_con_info)) -#define I16zh_con_info (&(ghczminternal_GHCziInternalziInt_I16zh_con_info)) -#define I32zh_con_info (&(ghczminternal_GHCziInternalziInt_I32zh_con_info)) -#define I64zh_con_info (&(ghczminternal_GHCziInternalziInt_I64zh_con_info)) -#define I64zh_con_info (&(ghczminternal_GHCziInternalziInt_I64zh_con_info)) -#define Ptr_con_info (&(ghczminternal_GHCziInternalziPtr_Ptr_con_info)) -#define FunPtr_con_info (&(ghczminternal_GHCziInternalziPtr_FunPtr_con_info)) -#define StablePtr_static_info (&(ghczminternal_GHCziInternalziStable_StablePtr_static_info)) -#define StablePtr_con_info (&(ghczminternal_GHCziInternalziStable_StablePtr_con_info)) +#define runAllocationLimitHandler_closure ghc_hs_iface->runAllocationLimitHandler_closure + +#define flushStdHandles_closure ghc_hs_iface->flushStdHandles_closure +#define runMainIO_closure ghc_hs_iface->runMainIO_closure + +#define stackOverflow_closure ghc_hs_iface->stackOverflow_closure +#define heapOverflow_closure ghc_hs_iface->heapOverflow_closure +#define allocationLimitExceeded_closure ghc_hs_iface->allocationLimitExceeded_closure +#define blockedIndefinitelyOnMVar_closure ghc_hs_iface->blockedIndefinitelyOnMVar_closure +#define blockedIndefinitelyOnSTM_closure ghc_hs_iface->blockedIndefinitelyOnSTM_closure +#define cannotCompactFunction_closure ghc_hs_iface->cannotCompactFunction_closure +#define cannotCompactPinned_closure ghc_hs_iface->cannotCompactPinned_closure +#define cannotCompactMutable_closure ghc_hs_iface->cannotCompactMutable_closure +#define nonTermination_closure ghc_hs_iface->nonTermination_closure +#define nestedAtomically_closure ghc_hs_iface->nestedAtomically_closure +#define absentSumFieldError_closure ghc_hs_iface->absentSumFieldError_closure +#define underflowException_closure ghc_hs_iface->underflowException_closure +#define overflowException_closure ghc_hs_iface->overflowException_closure +#define divZeroException_closure ghc_hs_iface->divZZeroException_closure + +#define blockedOnBadFD_closure ghc_hs_iface->blockedOnBadFD_closure + +#define Czh_con_info ghc_hs_iface->Czh_con_info +#define Izh_con_info ghc_hs_iface->Izh_con_info +#define Fzh_con_info ghc_hs_iface->Fzh_con_info +#define Dzh_con_info ghc_hs_iface->Dzh_con_info +#define Wzh_con_info ghc_hs_iface->Wzh_con_info +#define W8zh_con_info ghc_hs_iface->W8zh_con_info +#define W16zh_con_info ghc_hs_iface->W16zh_con_info +#define W32zh_con_info ghc_hs_iface->W32zh_con_info +#define W64zh_con_info ghc_hs_iface->W64zh_con_info +#define I8zh_con_info ghc_hs_iface->I8zh_con_info +#define I16zh_con_info ghc_hs_iface->I16zh_con_info +#define I32zh_con_info ghc_hs_iface->I32zh_con_info +#define I64zh_con_info ghc_hs_iface->I64zh_con_info +#define I64zh_con_info ghc_hs_iface->I64zh_con_info +#define Ptr_con_info ghc_hs_iface->Ptr_con_info +#define FunPtr_con_info ghc_hs_iface->FunPtr_con_info +#define StablePtr_static_info ghc_hs_iface->StablePtr_static_info +#define StablePtr_con_info ghc_hs_iface->StablePtr_con_info ===================================== rts/PrimOps.cmm ===================================== @@ -25,12 +25,8 @@ #include "MachDeps.h" #include "SMPClosureOps.h" -import CLOSURE ghczminternal_GHCziInternalziControlziExceptionziBase_nestedAtomically_closure; -import CLOSURE ghczminternal_GHCziInternalziIOziException_heapOverflow_closure; -import CLOSURE ghczminternal_GHCziInternalziIOziException_blockedIndefinitelyOnMVar_closure; import AcquireSRWLockExclusive; import ReleaseSRWLockExclusive; -import CLOSURE ghczminternal_GHCziInternalziTypes_False_closure; #if defined(PROFILING) import CLOSURE CCS_MAIN; #endif @@ -118,7 +114,7 @@ stg_newByteArrayzh ( W_ n ) ("ptr" p) = ccall allocateArrBytes(MyCapability() "ptr", n, CCCS); if (p == NULL) (likely: False) { - jump stg_raisezh(ghczminternal_GHCziInternalziIOziException_heapOverflow_closure); + jump stg_raisezh(HsIface_heapOverflow_closure(W_[ghc_hs_iface])); } return (p); } @@ -135,7 +131,7 @@ stg_newPinnedByteArrayzh ( W_ n ) ("ptr" p) = ccall allocateArrBytesPinned(MyCapability() "ptr", n, BA_ALIGN, CCCS); if (p == NULL) (likely: False) { - jump stg_raisezh(ghczminternal_GHCziInternalziIOziException_heapOverflow_closure); + jump stg_raisezh(HsIface_heapOverflow_closure(W_[ghc_hs_iface])); } return (p); } @@ -149,7 +145,7 @@ stg_newAlignedPinnedByteArrayzh ( W_ n, W_ alignment ) ("ptr" p) = ccall allocateArrBytesPinned(MyCapability() "ptr", n, alignment, CCCS); if (p == NULL) (likely: False) { - jump stg_raisezh(ghczminternal_GHCziInternalziIOziException_heapOverflow_closure); + jump stg_raisezh(HsIface_heapOverflow_closure(W_[ghc_hs_iface])); } return (p); } @@ -364,7 +360,7 @@ stg_newArrayzh ( W_ n /* words */, gcptr init ) ("ptr" arr) = ccall allocateMutArrPtrs(MyCapability() "ptr", n, CCCS); if (arr == NULL) (likely: False) { - jump stg_raisezh(ghczminternal_GHCziInternalziIOziException_heapOverflow_closure); + jump stg_raisezh(HsIface_heapOverflow_closure(W_[ghc_hs_iface])); } // Initialise all elements of the array with the value init @@ -474,7 +470,7 @@ stg_newSmallArrayzh ( W_ n /* words */, gcptr init ) ("ptr" arr) = ccall allocateSmallMutArrPtrs(MyCapability() "ptr", n, CCCS); if (arr == NULL) (likely: False) { - jump stg_raisezh(ghczminternal_GHCziInternalziIOziException_heapOverflow_closure); + jump stg_raisezh(HsIface_heapOverflow_closure(W_[ghc_hs_iface])); } // Initialise all elements of the array with the value init @@ -1090,7 +1086,7 @@ stg_listThreadszh () ("ptr" arr) = ccall listThreads(MyCapability() "ptr"); if (arr == NULL) (likely: False) { - jump stg_raisezh(ghczminternal_GHCziInternalziIOziException_heapOverflow_closure); + jump stg_raisezh(HsIface_heapOverflow_closure(W_[ghc_hs_iface])); } return (arr); @@ -1360,7 +1356,7 @@ stg_atomicallyzh (P_ stm) /* Nested transactions are not allowed; raise an exception */ if (old_trec != NO_TREC) (likely: False) { - jump stg_raisezh(ghczminternal_GHCziInternalziControlziExceptionziBase_nestedAtomically_closure); + jump stg_raisezh(HsIface_nestedAtomically_closure(W_[ghc_hs_iface])); } code = stm; @@ -2231,7 +2227,7 @@ stg_unpackClosurezh ( P_ closure ) dat_arr_sz = SIZEOF_StgArrBytes + WDS(len); ("ptr" dat_arr) = ccall allocateMightFail(MyCapability() "ptr", BYTES_TO_WDS(dat_arr_sz)); if (dat_arr == NULL) (likely: False) { - jump stg_raisezh(ghczminternal_GHCziInternalziIOziException_heapOverflow_closure); + jump stg_raisezh(HsIface_heapOverflow_closure(W_[ghc_hs_iface])); } TICK_ALLOC_PRIM(SIZEOF_StgArrBytes, WDS(len), 0); @@ -2251,7 +2247,7 @@ for: ("ptr" ptrArray) = foreign "C" heap_view_closurePtrs(MyCapability() "ptr", clos "ptr"); if (ptrArray == NULL) (likely: False) { - jump stg_raisezh(ghczminternal_GHCziInternalziIOziException_heapOverflow_closure); + jump stg_raisezh(HsIface_heapOverflow_closure(W_[ghc_hs_iface])); } return (info, dat_arr, ptrArray); @@ -2518,13 +2514,13 @@ stg_getSparkzh () W_ spark; #if !defined(THREADED_RTS) - return (0,ghczminternal_GHCziInternalziTypes_False_closure); + return (0,HsIface_False_closure(W_[ghc_hs_iface])); #else ("ptr" spark) = ccall findSpark(MyCapability() "ptr"); if (spark != 0) { return (1,spark); } else { - return (0,ghczminternal_GHCziInternalziTypes_False_closure); + return (0,HsIface_False_closure(W_[ghc_hs_iface])); } #endif } ===================================== rts/RtsAPI.c ===================================== @@ -509,7 +509,7 @@ void rts_evalStableIOMain(/* inout */ Capability **cap, SchedulerStatus stat; p = (StgClosure *)deRefStablePtr(s); - w = rts_apply(*cap, &ghczminternal_GHCziInternalziTopHandler_runMainIO_closure, p); + w = rts_apply(*cap, runMainIO_closure, p); tso = createStrictIOThread(*cap, RtsFlags.GcFlags.initialStkSize, w); // async exceptions are always blocked by default in the created // thread. See #1048. @@ -961,7 +961,7 @@ void rts_done (void) void hs_try_putmvar (/* in */ int capability, /* in */ HsStablePtr mvar) { - hs_try_putmvar_with_value(capability, mvar, TAG_CLOSURE(1, Unit_closure)); + hs_try_putmvar_with_value(capability, mvar, TAG_CLOSURE(1, ghc_hs_iface->Z0T_closure)); } void hs_try_putmvar_with_value (/* in */ int capability, ===================================== rts/RtsStartup.c ===================================== @@ -14,6 +14,7 @@ #include "linker/MMap.h" #include "RtsFlags.h" #include "RtsUtils.h" +#include "BuiltinClosures.h" #include "Prelude.h" #include "Printer.h" /* DEBUG_LoadSymbols */ #include "Schedule.h" /* initScheduler */ @@ -182,8 +183,8 @@ static void initBuiltinGcRoots(void) * these closures `Id`s of these can be safely marked as non-CAFFY * in the compiler. */ - getStablePtr((StgPtr)runIO_closure); - getStablePtr((StgPtr)runNonIO_closure); + getStablePtr((StgPtr)ghc_hs_iface->runIO_closure); + getStablePtr((StgPtr)ghc_hs_iface->runNonIO_closure); getStablePtr((StgPtr)flushStdHandles_closure); getStablePtr((StgPtr)runFinalizerBatch_closure); @@ -262,6 +263,14 @@ hs_init_ghc(int *argc, char **argv[], RtsConfig rts_config) setlocale(LC_CTYPE,""); + if (ghc_hs_iface == NULL) { + errorBelch("hs_init_ghc: ghc_hs_iface is uninitialized"); + stg_exit(1); + } + + + initBuiltinClosures(); + /* Initialise the stats department, phase 0 */ initStats0(); ===================================== rts/RtsToHsIface.c ===================================== @@ -0,0 +1,45 @@ +/* + * (c) The GHC Team, 2025-2026 + * + * RTS/ghc-internal interface + * + * + * Note [RTS/ghc-internal interface] + * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + * + * The runtime system depends upon a variety of symbols defined by Haskell + * modules living in `ghc-internal`. To avoid cyclic dependencies between + * ghc-internal and the RTS, these symbols are referenced indirectly via the + * the `HsIface` structure (specifically `ghc_hs_iface`): + * + * struct HsIface { + * StgClosure *runIO; // GHC.Internal.TopHandler.runIO + * StgClosure *Z0T; // GHC.Internal.Tuple.() + * // etc. + * }; + * + * `ghc_hs_iface` is initialized during program loading via the + * `init_ghc_hs_iface` constructor in `ghc-interface` + * + * const struct HsIface the_hs_iface = { + * .runIO = &ghczminternal_GHCziInternalziTopHandler_runIO_closure, + * .Z0T = &ghczminternal_GHCziInternalziTuple_Z0T_closure, + * // etc. + * }; + * + * void __attribute__((constructor)) init_ghc_hs_iface() { + * ghc_hs_iface = &the_hs_iface; + * } + * + * This effectively breaks the RTS's link-time dependency, replacing it with a + * run-time dependency at the cost of an indirection. It also has the pleasant + * side-effect of making the interface between the RTS and `ghc-internal` + * explicit. + * + */ + +#include "Rts.h" + +// This captures the symbols provided by ghc-internal which +// are needed by the RTS. +const HsIface *ghc_hs_iface = NULL; ===================================== rts/Schedule.c ===================================== @@ -1053,7 +1053,7 @@ scheduleProcessInbox (Capability **pcap USED_IF_THREADS) while (p != NULL) { pnext = p->link; performTryPutMVar(cap, (StgMVar*)deRefStablePtr(p->mvar), - Unit_closure); + ghc_hs_iface->Z0T_closure); freeStablePtr(p->mvar); stgFree(p); p = pnext; ===================================== rts/StgMiscClosures.cmm ===================================== @@ -13,8 +13,6 @@ #include "Cmm.h" import pthread_mutex_lock; -import ghczminternal_GHCziInternalziTypes_Czh_info; -import ghczminternal_GHCziInternalziTypes_Izh_info; import AcquireSRWLockExclusive; import ReleaseSRWLockExclusive; @@ -23,7 +21,6 @@ import whitehole_lockClosure_spin; import whitehole_lockClosure_yield; #endif - #if !defined(UnregisterisedCompiler) import CLOSURE CCS_SYSTEM; import CLOSURE ENT_DYN_IND_ctr; @@ -1031,554 +1028,3 @@ INFO_TABLE_CONSTR(stg_ASYNCIO_LIVE0,0,0,0,CONSTR_NOCAF,"ASYNCIO_LIVE0","ASYNCIO_ { foreign "C" barf("ASYNCIO_LIVE0 object (%p) entered!", R1) never returns; } CLOSURE(stg_ASYNCIO_LIVE0_closure,stg_ASYNCIO_LIVE0); - -/* ---------------------------------------------------------------------------- - Note [CHARLIKE and INTLIKE closures] - ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - These are static representations of Chars and small Ints, so that - we can remove dynamic Chars and Ints during garbage collection and - replace them with references to the static objects. - ------------------------------------------------------------------------- */ - -#define Char_hash_con_info ghczminternal_GHCziInternalziTypes_Czh_con_info -#define Int_hash_con_info ghczminternal_GHCziInternalziTypes_Izh_con_info - -#define CHARLIKE_HDR(n) CLOSURE(Char_hash_con_info, n) -#define INTLIKE_HDR(n) CLOSURE(Int_hash_con_info, n) - -section "data" { - stg_CHARLIKE_closure: - CHARLIKE_HDR(0) - CHARLIKE_HDR(1) - CHARLIKE_HDR(2) - CHARLIKE_HDR(3) - CHARLIKE_HDR(4) - CHARLIKE_HDR(5) - CHARLIKE_HDR(6) - CHARLIKE_HDR(7) - CHARLIKE_HDR(8) - CHARLIKE_HDR(9) - CHARLIKE_HDR(10) - CHARLIKE_HDR(11) - CHARLIKE_HDR(12) - CHARLIKE_HDR(13) - CHARLIKE_HDR(14) - CHARLIKE_HDR(15) - CHARLIKE_HDR(16) - CHARLIKE_HDR(17) - CHARLIKE_HDR(18) - CHARLIKE_HDR(19) - CHARLIKE_HDR(20) - CHARLIKE_HDR(21) - CHARLIKE_HDR(22) - CHARLIKE_HDR(23) - CHARLIKE_HDR(24) - CHARLIKE_HDR(25) - CHARLIKE_HDR(26) - CHARLIKE_HDR(27) - CHARLIKE_HDR(28) - CHARLIKE_HDR(29) - CHARLIKE_HDR(30) - CHARLIKE_HDR(31) - CHARLIKE_HDR(32) - CHARLIKE_HDR(33) - CHARLIKE_HDR(34) - CHARLIKE_HDR(35) - CHARLIKE_HDR(36) - CHARLIKE_HDR(37) - CHARLIKE_HDR(38) - CHARLIKE_HDR(39) - CHARLIKE_HDR(40) - CHARLIKE_HDR(41) - CHARLIKE_HDR(42) - CHARLIKE_HDR(43) - CHARLIKE_HDR(44) - CHARLIKE_HDR(45) - CHARLIKE_HDR(46) - CHARLIKE_HDR(47) - CHARLIKE_HDR(48) - CHARLIKE_HDR(49) - CHARLIKE_HDR(50) - CHARLIKE_HDR(51) - CHARLIKE_HDR(52) - CHARLIKE_HDR(53) - CHARLIKE_HDR(54) - CHARLIKE_HDR(55) - CHARLIKE_HDR(56) - CHARLIKE_HDR(57) - CHARLIKE_HDR(58) - CHARLIKE_HDR(59) - CHARLIKE_HDR(60) - CHARLIKE_HDR(61) - CHARLIKE_HDR(62) - CHARLIKE_HDR(63) - CHARLIKE_HDR(64) - CHARLIKE_HDR(65) - CHARLIKE_HDR(66) - CHARLIKE_HDR(67) - CHARLIKE_HDR(68) - CHARLIKE_HDR(69) - CHARLIKE_HDR(70) - CHARLIKE_HDR(71) - CHARLIKE_HDR(72) - CHARLIKE_HDR(73) - CHARLIKE_HDR(74) - CHARLIKE_HDR(75) - CHARLIKE_HDR(76) - CHARLIKE_HDR(77) - CHARLIKE_HDR(78) - CHARLIKE_HDR(79) - CHARLIKE_HDR(80) - CHARLIKE_HDR(81) - CHARLIKE_HDR(82) - CHARLIKE_HDR(83) - CHARLIKE_HDR(84) - CHARLIKE_HDR(85) - CHARLIKE_HDR(86) - CHARLIKE_HDR(87) - CHARLIKE_HDR(88) - CHARLIKE_HDR(89) - CHARLIKE_HDR(90) - CHARLIKE_HDR(91) - CHARLIKE_HDR(92) - CHARLIKE_HDR(93) - CHARLIKE_HDR(94) - CHARLIKE_HDR(95) - CHARLIKE_HDR(96) - CHARLIKE_HDR(97) - CHARLIKE_HDR(98) - CHARLIKE_HDR(99) - CHARLIKE_HDR(100) - CHARLIKE_HDR(101) - CHARLIKE_HDR(102) - CHARLIKE_HDR(103) - CHARLIKE_HDR(104) - CHARLIKE_HDR(105) - CHARLIKE_HDR(106) - CHARLIKE_HDR(107) - CHARLIKE_HDR(108) - CHARLIKE_HDR(109) - CHARLIKE_HDR(110) - CHARLIKE_HDR(111) - CHARLIKE_HDR(112) - CHARLIKE_HDR(113) - CHARLIKE_HDR(114) - CHARLIKE_HDR(115) - CHARLIKE_HDR(116) - CHARLIKE_HDR(117) - CHARLIKE_HDR(118) - CHARLIKE_HDR(119) - CHARLIKE_HDR(120) - CHARLIKE_HDR(121) - CHARLIKE_HDR(122) - CHARLIKE_HDR(123) - CHARLIKE_HDR(124) - CHARLIKE_HDR(125) - CHARLIKE_HDR(126) - CHARLIKE_HDR(127) - CHARLIKE_HDR(128) - CHARLIKE_HDR(129) - CHARLIKE_HDR(130) - CHARLIKE_HDR(131) - CHARLIKE_HDR(132) - CHARLIKE_HDR(133) - CHARLIKE_HDR(134) - CHARLIKE_HDR(135) - CHARLIKE_HDR(136) - CHARLIKE_HDR(137) - CHARLIKE_HDR(138) - CHARLIKE_HDR(139) - CHARLIKE_HDR(140) - CHARLIKE_HDR(141) - CHARLIKE_HDR(142) - CHARLIKE_HDR(143) - CHARLIKE_HDR(144) - CHARLIKE_HDR(145) - CHARLIKE_HDR(146) - CHARLIKE_HDR(147) - CHARLIKE_HDR(148) - CHARLIKE_HDR(149) - CHARLIKE_HDR(150) - CHARLIKE_HDR(151) - CHARLIKE_HDR(152) - CHARLIKE_HDR(153) - CHARLIKE_HDR(154) - CHARLIKE_HDR(155) - CHARLIKE_HDR(156) - CHARLIKE_HDR(157) - CHARLIKE_HDR(158) - CHARLIKE_HDR(159) - CHARLIKE_HDR(160) - CHARLIKE_HDR(161) - CHARLIKE_HDR(162) - CHARLIKE_HDR(163) - CHARLIKE_HDR(164) - CHARLIKE_HDR(165) - CHARLIKE_HDR(166) - CHARLIKE_HDR(167) - CHARLIKE_HDR(168) - CHARLIKE_HDR(169) - CHARLIKE_HDR(170) - CHARLIKE_HDR(171) - CHARLIKE_HDR(172) - CHARLIKE_HDR(173) - CHARLIKE_HDR(174) - CHARLIKE_HDR(175) - CHARLIKE_HDR(176) - CHARLIKE_HDR(177) - CHARLIKE_HDR(178) - CHARLIKE_HDR(179) - CHARLIKE_HDR(180) - CHARLIKE_HDR(181) - CHARLIKE_HDR(182) - CHARLIKE_HDR(183) - CHARLIKE_HDR(184) - CHARLIKE_HDR(185) - CHARLIKE_HDR(186) - CHARLIKE_HDR(187) - CHARLIKE_HDR(188) - CHARLIKE_HDR(189) - CHARLIKE_HDR(190) - CHARLIKE_HDR(191) - CHARLIKE_HDR(192) - CHARLIKE_HDR(193) - CHARLIKE_HDR(194) - CHARLIKE_HDR(195) - CHARLIKE_HDR(196) - CHARLIKE_HDR(197) - CHARLIKE_HDR(198) - CHARLIKE_HDR(199) - CHARLIKE_HDR(200) - CHARLIKE_HDR(201) - CHARLIKE_HDR(202) - CHARLIKE_HDR(203) - CHARLIKE_HDR(204) - CHARLIKE_HDR(205) - CHARLIKE_HDR(206) - CHARLIKE_HDR(207) - CHARLIKE_HDR(208) - CHARLIKE_HDR(209) - CHARLIKE_HDR(210) - CHARLIKE_HDR(211) - CHARLIKE_HDR(212) - CHARLIKE_HDR(213) - CHARLIKE_HDR(214) - CHARLIKE_HDR(215) - CHARLIKE_HDR(216) - CHARLIKE_HDR(217) - CHARLIKE_HDR(218) - CHARLIKE_HDR(219) - CHARLIKE_HDR(220) - CHARLIKE_HDR(221) - CHARLIKE_HDR(222) - CHARLIKE_HDR(223) - CHARLIKE_HDR(224) - CHARLIKE_HDR(225) - CHARLIKE_HDR(226) - CHARLIKE_HDR(227) - CHARLIKE_HDR(228) - CHARLIKE_HDR(229) - CHARLIKE_HDR(230) - CHARLIKE_HDR(231) - CHARLIKE_HDR(232) - CHARLIKE_HDR(233) - CHARLIKE_HDR(234) - CHARLIKE_HDR(235) - CHARLIKE_HDR(236) - CHARLIKE_HDR(237) - CHARLIKE_HDR(238) - CHARLIKE_HDR(239) - CHARLIKE_HDR(240) - CHARLIKE_HDR(241) - CHARLIKE_HDR(242) - CHARLIKE_HDR(243) - CHARLIKE_HDR(244) - CHARLIKE_HDR(245) - CHARLIKE_HDR(246) - CHARLIKE_HDR(247) - CHARLIKE_HDR(248) - CHARLIKE_HDR(249) - CHARLIKE_HDR(250) - CHARLIKE_HDR(251) - CHARLIKE_HDR(252) - CHARLIKE_HDR(253) - CHARLIKE_HDR(254) - CHARLIKE_HDR(255) -} - -section "data" { - stg_INTLIKE_closure: - INTLIKE_HDR(-16) /* MIN_INTLIKE == -16 */ - INTLIKE_HDR(-15) - INTLIKE_HDR(-14) - INTLIKE_HDR(-13) - INTLIKE_HDR(-12) - INTLIKE_HDR(-11) - INTLIKE_HDR(-10) - INTLIKE_HDR(-9) - INTLIKE_HDR(-8) - INTLIKE_HDR(-7) - INTLIKE_HDR(-6) - INTLIKE_HDR(-5) - INTLIKE_HDR(-4) - INTLIKE_HDR(-3) - INTLIKE_HDR(-2) - INTLIKE_HDR(-1) - INTLIKE_HDR(0) - INTLIKE_HDR(1) - INTLIKE_HDR(2) - INTLIKE_HDR(3) - INTLIKE_HDR(4) - INTLIKE_HDR(5) - INTLIKE_HDR(6) - INTLIKE_HDR(7) - INTLIKE_HDR(8) - INTLIKE_HDR(9) - INTLIKE_HDR(10) - INTLIKE_HDR(11) - INTLIKE_HDR(12) - INTLIKE_HDR(13) - INTLIKE_HDR(14) - INTLIKE_HDR(15) - INTLIKE_HDR(16) - INTLIKE_HDR(17) - INTLIKE_HDR(18) - INTLIKE_HDR(19) - INTLIKE_HDR(20) - INTLIKE_HDR(21) - INTLIKE_HDR(22) - INTLIKE_HDR(23) - INTLIKE_HDR(24) - INTLIKE_HDR(25) - INTLIKE_HDR(26) - INTLIKE_HDR(27) - INTLIKE_HDR(28) - INTLIKE_HDR(29) - INTLIKE_HDR(30) - INTLIKE_HDR(31) - INTLIKE_HDR(32) - INTLIKE_HDR(33) - INTLIKE_HDR(34) - INTLIKE_HDR(35) - INTLIKE_HDR(36) - INTLIKE_HDR(37) - INTLIKE_HDR(38) - INTLIKE_HDR(39) - INTLIKE_HDR(40) - INTLIKE_HDR(41) - INTLIKE_HDR(42) - INTLIKE_HDR(43) - INTLIKE_HDR(44) - INTLIKE_HDR(45) - INTLIKE_HDR(46) - INTLIKE_HDR(47) - INTLIKE_HDR(48) - INTLIKE_HDR(49) - INTLIKE_HDR(50) - INTLIKE_HDR(51) - INTLIKE_HDR(52) - INTLIKE_HDR(53) - INTLIKE_HDR(54) - INTLIKE_HDR(55) - INTLIKE_HDR(56) - INTLIKE_HDR(57) - INTLIKE_HDR(58) - INTLIKE_HDR(59) - INTLIKE_HDR(60) - INTLIKE_HDR(61) - INTLIKE_HDR(62) - INTLIKE_HDR(63) - INTLIKE_HDR(64) - INTLIKE_HDR(65) - INTLIKE_HDR(66) - INTLIKE_HDR(67) - INTLIKE_HDR(68) - INTLIKE_HDR(69) - INTLIKE_HDR(70) - INTLIKE_HDR(71) - INTLIKE_HDR(72) - INTLIKE_HDR(73) - INTLIKE_HDR(74) - INTLIKE_HDR(75) - INTLIKE_HDR(76) - INTLIKE_HDR(77) - INTLIKE_HDR(78) - INTLIKE_HDR(79) - INTLIKE_HDR(80) - INTLIKE_HDR(81) - INTLIKE_HDR(82) - INTLIKE_HDR(83) - INTLIKE_HDR(84) - INTLIKE_HDR(85) - INTLIKE_HDR(86) - INTLIKE_HDR(87) - INTLIKE_HDR(88) - INTLIKE_HDR(89) - INTLIKE_HDR(90) - INTLIKE_HDR(91) - INTLIKE_HDR(92) - INTLIKE_HDR(93) - INTLIKE_HDR(94) - INTLIKE_HDR(95) - INTLIKE_HDR(96) - INTLIKE_HDR(97) - INTLIKE_HDR(98) - INTLIKE_HDR(99) - INTLIKE_HDR(100) - INTLIKE_HDR(101) - INTLIKE_HDR(102) - INTLIKE_HDR(103) - INTLIKE_HDR(104) - INTLIKE_HDR(105) - INTLIKE_HDR(106) - INTLIKE_HDR(107) - INTLIKE_HDR(108) - INTLIKE_HDR(109) - INTLIKE_HDR(110) - INTLIKE_HDR(111) - INTLIKE_HDR(112) - INTLIKE_HDR(113) - INTLIKE_HDR(114) - INTLIKE_HDR(115) - INTLIKE_HDR(116) - INTLIKE_HDR(117) - INTLIKE_HDR(118) - INTLIKE_HDR(119) - INTLIKE_HDR(120) - INTLIKE_HDR(121) - INTLIKE_HDR(122) - INTLIKE_HDR(123) - INTLIKE_HDR(124) - INTLIKE_HDR(125) - INTLIKE_HDR(126) - INTLIKE_HDR(127) - INTLIKE_HDR(128) - INTLIKE_HDR(129) - INTLIKE_HDR(130) - INTLIKE_HDR(131) - INTLIKE_HDR(132) - INTLIKE_HDR(133) - INTLIKE_HDR(134) - INTLIKE_HDR(135) - INTLIKE_HDR(136) - INTLIKE_HDR(137) - INTLIKE_HDR(138) - INTLIKE_HDR(139) - INTLIKE_HDR(140) - INTLIKE_HDR(141) - INTLIKE_HDR(142) - INTLIKE_HDR(143) - INTLIKE_HDR(144) - INTLIKE_HDR(145) - INTLIKE_HDR(146) - INTLIKE_HDR(147) - INTLIKE_HDR(148) - INTLIKE_HDR(149) - INTLIKE_HDR(150) - INTLIKE_HDR(151) - INTLIKE_HDR(152) - INTLIKE_HDR(153) - INTLIKE_HDR(154) - INTLIKE_HDR(155) - INTLIKE_HDR(156) - INTLIKE_HDR(157) - INTLIKE_HDR(158) - INTLIKE_HDR(159) - INTLIKE_HDR(160) - INTLIKE_HDR(161) - INTLIKE_HDR(162) - INTLIKE_HDR(163) - INTLIKE_HDR(164) - INTLIKE_HDR(165) - INTLIKE_HDR(166) - INTLIKE_HDR(167) - INTLIKE_HDR(168) - INTLIKE_HDR(169) - INTLIKE_HDR(170) - INTLIKE_HDR(171) - INTLIKE_HDR(172) - INTLIKE_HDR(173) - INTLIKE_HDR(174) - INTLIKE_HDR(175) - INTLIKE_HDR(176) - INTLIKE_HDR(177) - INTLIKE_HDR(178) - INTLIKE_HDR(179) - INTLIKE_HDR(180) - INTLIKE_HDR(181) - INTLIKE_HDR(182) - INTLIKE_HDR(183) - INTLIKE_HDR(184) - INTLIKE_HDR(185) - INTLIKE_HDR(186) - INTLIKE_HDR(187) - INTLIKE_HDR(188) - INTLIKE_HDR(189) - INTLIKE_HDR(190) - INTLIKE_HDR(191) - INTLIKE_HDR(192) - INTLIKE_HDR(193) - INTLIKE_HDR(194) - INTLIKE_HDR(195) - INTLIKE_HDR(196) - INTLIKE_HDR(197) - INTLIKE_HDR(198) - INTLIKE_HDR(199) - INTLIKE_HDR(200) - INTLIKE_HDR(201) - INTLIKE_HDR(202) - INTLIKE_HDR(203) - INTLIKE_HDR(204) - INTLIKE_HDR(205) - INTLIKE_HDR(206) - INTLIKE_HDR(207) - INTLIKE_HDR(208) - INTLIKE_HDR(209) - INTLIKE_HDR(210) - INTLIKE_HDR(211) - INTLIKE_HDR(212) - INTLIKE_HDR(213) - INTLIKE_HDR(214) - INTLIKE_HDR(215) - INTLIKE_HDR(216) - INTLIKE_HDR(217) - INTLIKE_HDR(218) - INTLIKE_HDR(219) - INTLIKE_HDR(220) - INTLIKE_HDR(221) - INTLIKE_HDR(222) - INTLIKE_HDR(223) - INTLIKE_HDR(224) - INTLIKE_HDR(225) - INTLIKE_HDR(226) - INTLIKE_HDR(227) - INTLIKE_HDR(228) - INTLIKE_HDR(229) - INTLIKE_HDR(230) - INTLIKE_HDR(231) - INTLIKE_HDR(232) - INTLIKE_HDR(233) - INTLIKE_HDR(234) - INTLIKE_HDR(235) - INTLIKE_HDR(236) - INTLIKE_HDR(237) - INTLIKE_HDR(238) - INTLIKE_HDR(239) - INTLIKE_HDR(240) - INTLIKE_HDR(241) - INTLIKE_HDR(242) - INTLIKE_HDR(243) - INTLIKE_HDR(244) - INTLIKE_HDR(245) - INTLIKE_HDR(246) - INTLIKE_HDR(247) - INTLIKE_HDR(248) - INTLIKE_HDR(249) - INTLIKE_HDR(250) - INTLIKE_HDR(251) - INTLIKE_HDR(252) - INTLIKE_HDR(253) - INTLIKE_HDR(254) - INTLIKE_HDR(255) /* MAX_INTLIKE == 255 - See #16961 for why 255 */ -} ===================================== rts/StgStdThunks.cmm ===================================== @@ -13,8 +13,6 @@ #include "Cmm.h" #include "Updates.h" -import CLOSURE ghczminternal_GHCziInternalziCString_unpackCStringzh_info; -import CLOSURE ghczminternal_GHCziInternalziCString_unpackCStringUtf8zh_info; #if !defined(UnregisterisedCompiler) import CLOSURE STK_CHK_ctr; import CLOSURE stg_bh_upd_frame_info; @@ -348,7 +346,7 @@ stg_do_unpack_cstring(P_ node, P_ newCAF_ret) { W_ str; str = StgThunk_payload(node, 2); push (UPDATE_FRAME_FIELDS(,,stg_bh_upd_frame_info, CCCS, 0, newCAF_ret)) { - jump %ENTRY_CODE(ghczminternal_GHCziInternalziCString_unpackCStringzh_info)(node, str); + jump %ENTRY_CODE(HsIface_unpackCStringzh_info(W_[ghc_hs_iface]))(node, str); } } @@ -372,7 +370,7 @@ stg_do_unpack_cstring_utf8(P_ node, P_ newCAF_ret) { W_ str; str = StgThunk_payload(node, 2); push (UPDATE_FRAME_FIELDS(,,stg_bh_upd_frame_info, CCCS, 0, newCAF_ret)) { - jump %ENTRY_CODE(ghczminternal_GHCziInternalziCString_unpackCStringUtf8zh_info)(node, str); + jump %ENTRY_CODE(HsIface_unpackCStringUtf8zh_info(W_[ghc_hs_iface]))(node, str); } } ===================================== rts/include/Rts.h ===================================== @@ -229,6 +229,7 @@ void _warnFail(const char *filename, unsigned int linenum); #include "rts/storage/ClosureTypes.h" #include "rts/storage/TSO.h" #include "stg/MiscClosures.h" /* InfoTables, closures etc. defined in the RTS */ + #include "rts/storage/Block.h" #include "rts/storage/ClosureMacros.h" #include "rts/storage/MBlock.h" ===================================== rts/include/RtsAPI.h ===================================== @@ -18,6 +18,7 @@ extern "C" { #include "HsFFI.h" #include "rts/Time.h" #include "rts/Types.h" +#include "rts/RtsToHsIface.h" /* * Running the scheduler @@ -584,11 +585,6 @@ void rts_done (void); // Note that RtsAPI.h is also included by foreign export stubs in // the base package itself. // -extern StgClosure ghczminternal_GHCziInternalziTopHandler_runIO_closure; -extern StgClosure ghczminternal_GHCziInternalziTopHandler_runNonIO_closure; - -#define runIO_closure (&(ghczminternal_GHCziInternalziTopHandler_runIO_closure)) -#define runNonIO_closure (&(ghczminternal_GHCziInternalziTopHandler_runNonIO_closure)) /* ------------------------------------------------------------------------ */ ===================================== rts/include/rts/Constants.h ===================================== @@ -57,11 +57,12 @@ #define MAX_SPEC_CONSTR_SIZE 2 /* Range of built-in table of static small int-like and char-like closures. + * Range is inclusive of both minimum and maximum. * * NB. This corresponds with the number of actual INTLIKE/CHARLIKE * closures defined in rts/StgMiscClosures.cmm. */ -#define MAX_INTLIKE 255 +#define MAX_INTLIKE 255 /* See #16961 for why 255 */ #define MIN_INTLIKE (-16) #define MAX_CHARLIKE 255 ===================================== rts/include/rts/RtsToHsIface.h ===================================== @@ -0,0 +1,64 @@ +/* + * (c) The GHC Team, 2025-2026 + * + * RTS/ghc-internal interface + * + * See Note [RTS/ghc-internal interface]. + */ + +typedef struct { + StgClosure *processRemoteCompletion_closure; // GHC.Internal.Event.Windows.processRemoteCompletion_closure + StgClosure *runIO_closure; // GHC.Internal.TopHandler.runIO_closure + StgClosure *runNonIO_closure; // GHC.Internal.TopHandler.runNonIO_closure + StgClosure *Z0T_closure; // GHC.Internal.Tuple.Z0T_closure + StgClosure *True_closure; // GHC.Internal.Types.True_closure + StgClosure *False_closure; // GHC.Internal.Types.False_closure + StgClosure *unpackCString_closure; // GHC.Internal.Pack.unpackCString_closure + StgClosure *runFinalizzerBatch_closure; // GHC.Internal.Weak.Finalizze.runFinalizzerBatch_closure + StgClosure *stackOverflow_closure; // GHC.Internal.IO.Exception.stackOverflow_closure + StgClosure *heapOverflow_closure; // GHC.Internal.IO.Exception.heapOverflow_closure + StgClosure *allocationLimitExceeded_closure; // GHC.Internal.IO.Exception.allocationLimitExceeded_closure + StgClosure *blockedIndefinitelyOnMVar_closure; // GHC.Internal.IO.Exception.blockedIndefinitelyOnMVar_closure + StgClosure *blockedIndefinitelyOnSTM_closure; // GHC.Internal.IO.Exception.blockedIndefinitelyOnSTM_closure + StgClosure *cannotCompactFunction_closure; // GHC.Internal.IO.Exception.cannotCompactFunction_closure + StgClosure *cannotCompactPinned_closure; // GHC.Internal.IO.Exception.cannotCompactPinned_closure + StgClosure *cannotCompactMutable_closure; // GHC.Internal.IO.Exception.cannotCompactMutable_closure + StgClosure *nonTermination_closure; // GHC.Internal.Control.Exception.Base.nonTermination_closure + StgClosure *nestedAtomically_closure; // GHC.Internal.Control.Exception.Base.nestedAtomically_closure + StgClosure *noMatchingContinuationPrompt_closure; // GHC.Internal.Control.Exception.Base.noMatchingContinuationPrompt_closure + StgClosure *blockedOnBadFD_closure; // GHC.Internal.Event.Thread.blockedOnBadFD_closure + StgClosure *runSparks_closure; // GHC.Internal.Conc.Sync.runSparks_closure + StgClosure *ensureIOManagerIsRunning_closure; // GHC.Internal.Conc.IO.ensureIOManagerIsRunning_closure + StgClosure *interruptIOManager_closure; // GHC.Internal.Conc.IO.interruptIOManager_closure + StgClosure *ioManagerCapabilitiesChanged_closure; // GHC.Internal.Conc.IO.ioManagerCapabilitiesChanged_closure + StgClosure *runHandlersPtr_closure; // GHC.Internal.Conc.Signal.runHandlersPtr_closure + StgClosure *flushStdHandles_closure; // GHC.Internal.TopHandler.flushStdHandles_closure + StgClosure *runMainIO_closure; // GHC.Internal.TopHandler.runMainIO_closure + StgInfoTable *Czh_con_info; // GHC.Internal.Types.Czh_con_info + StgInfoTable *Izh_con_info; // GHC.Internal.Types.Izh_con_info + StgInfoTable *Fzh_con_info; // GHC.Internal.Types.Fzh_con_info + StgInfoTable *Dzh_con_info; // GHC.Internal.Types.Dzh_con_info + StgInfoTable *Wzh_con_info; // GHC.Internal.Types.Wzh_con_info + StgClosure *absentSumFieldError_closure; // GHC.Internal.Prim.Panic.absentSumFieldError_closure + StgClosure *runAllocationLimitHandler_closure; // GHC.Internal.AllocationLimitHandler.runAllocationLimitHandler_closure + StgInfoTable *Ptr_con_info; // GHC.Internal.Ptr.Ptr_con_info + StgInfoTable *FunPtr_con_info; // GHC.Internal.Ptr.FunPtr_con_info + StgInfoTable *I8zh_con_info; // GHC.Internal.Int.I8zh_con_info + StgInfoTable *I16zh_con_info; // GHC.Internal.Int.I16zh_con_info + StgInfoTable *I32zh_con_info; // GHC.Internal.Int.I32zh_con_info + StgInfoTable *I64zh_con_info; // GHC.Internal.Int.I64zh_con_info + StgInfoTable *W8zh_con_info; // GHC.Internal.Word.W8zh_con_info + StgInfoTable *W16zh_con_info; // GHC.Internal.Word.W16zh_con_info + StgInfoTable *W32zh_con_info; // GHC.Internal.Word.W32zh_con_info + StgInfoTable *W64zh_con_info; // GHC.Internal.Word.W64zh_con_info + StgInfoTable *StablePtr_con_info; // GHC.Internal.Stable.StablePtr_con_info + StgClosure *StackSnapshot_closure; // GHC.Internal.Stack.CloneStack.StackSnapshot_closure + StgClosure *divZZeroException_closure; // GHC.Internal.Exception.Type.divZeroException_closure + StgClosure *underflowException_closure; // GHC.Internal.Exception.Type.underflowException_closure + StgClosure *overflowException_closure; // GHC.Internal.Exception.Type.overflowException_closure + StgClosure *unpackCStringzh_closure; // GHC.Internal.CString.unpackCStringzh_closure + StgInfoTable *unpackCStringzh_info; // GHC.Internal.CString.unpackCStringzh_info + StgInfoTable *unpackCStringUtf8zh_info; // GHC.Internal.CString.unpackCStringUtf8zh_info +} HsIface; + +extern const HsIface *ghc_hs_iface; ===================================== rts/include/stg/MiscClosures.h ===================================== @@ -277,8 +277,8 @@ RTS_ENTRY(stg_NO_FINALIZER); extern StgWordArray stg_CHARLIKE_closure; extern StgWordArray stg_INTLIKE_closure; #else -extern StgIntCharlikeClosure stg_CHARLIKE_closure[]; -extern StgIntCharlikeClosure stg_INTLIKE_closure[]; +extern StgIntCharlikeClosure stg_CHARLIKE_closure[MAX_CHARLIKE - MIN_CHARLIKE + 1]; +extern StgIntCharlikeClosure stg_INTLIKE_closure[MAX_INTLIKE - MIN_INTLIKE + 1]; #endif /* StgStartup */ ===================================== rts/posix/Signals.c ===================================== @@ -222,7 +222,7 @@ ioManagerDie (void) void ioManagerStartCap (Capability **cap) { - rts_evalIO(cap,&ghczminternal_GHCziInternalziConcziIO_ensureIOManagerIsRunning_closure,NULL); + rts_evalIO(cap,ensureIOManagerIsRunning_closure,NULL); } void @@ -493,7 +493,7 @@ startSignalHandlers(Capability *cap) RtsFlags.GcFlags.initialStkSize, rts_apply(cap, rts_apply(cap, - &ghczminternal_GHCziInternalziConcziSignal_runHandlersPtr_closure, + runHandlersPtr_closure, rts_mkPtr(cap, info)), rts_mkInt(cap, info->si_signo))); scheduleThread(cap, t); ===================================== rts/rts.cabal ===================================== @@ -334,6 +334,7 @@ library rts/storage/InfoTables.h rts/storage/MBlock.h rts/storage/TSO.h + rts/RtsToHsIface.h stg/MachRegs.h stg/MachRegs/arm32.h stg/MachRegs/arm64.h @@ -403,6 +404,7 @@ library adjustor/AdjustorPool.c ExecPage.c Arena.c + BuiltinClosures.c Capability.c CheckUnload.c CheckVectorSupport.c @@ -448,6 +450,7 @@ library RtsStartup.c RtsSymbolInfo.c RtsSymbols.c + RtsToHsIface.c RtsUtils.c STM.c Schedule.c ===================================== rts/wasm/JSFFI.c ===================================== @@ -23,8 +23,8 @@ int __main_argc_argv(int argc, char *argv[]) { hs_init_ghc(&argc, &argv, __conf); // See Note [threadDelay on wasm] for details. rts_JSFFI_flag = HS_BOOL_TRUE; - getStablePtr((StgPtr)&ghczminternal_GHCziInternalziWasmziPrimziImports_raiseJSException_closure); - rts_threadDelay_impl = getStablePtr((StgPtr)&ghczminternal_GHCziInternalziWasmziPrimziConcziInternal_threadDelay_closure); + getStablePtr((StgPtr)ghc_hs_iface->raiseJSException_closure); + rts_threadDelay_impl = getStablePtr((StgPtr)ghc_hs_iface->threadDelay_closure); return 0; } @@ -112,7 +112,7 @@ HaskellObj rts_mkJSVal(Capability *cap, HsJSVal v) { SET_HDR(w, &stg_WEAK_info, CCS_SYSTEM); w->cfinalizers = (StgClosure *)cfin; w->key = p; - w->value = Unit_closure; + w->value = ghc_hs_iface->Z0T_closure; w->finalizer = &stg_NO_FINALIZER_closure; w->link = cap->weak_ptr_list_hd; cap->weak_ptr_list_hd = w; @@ -123,7 +123,7 @@ HaskellObj rts_mkJSVal(Capability *cap, HsJSVal v) { p->payload[0] = (HaskellObj)w; HaskellObj box = (HaskellObj)allocate(cap, CONSTR_sizeW(1, 0)); - SET_HDR(box, &ghczminternal_GHCziInternalziWasmziPrimziTypes_JSVal_con_info, CCS_SYSTEM); + SET_HDR(box, ghc_hs_iface->JSVal_con_info, CCS_SYSTEM); box->payload[0] = p; return TAG_CLOSURE(1, box); @@ -139,7 +139,7 @@ STATIC_INLINE HsJSVal rts_getJSValzh(HaskellObj p) { HsJSVal rts_getJSVal(HaskellObj); HsJSVal rts_getJSVal(HaskellObj box) { - ASSERT(UNTAG_CLOSURE(box)->header.info == &ghczminternal_GHCziInternalziWasmziPrimziTypes_JSVal_con_info); + ASSERT(UNTAG_CLOSURE(box)->header.info == ghc_hs_iface->JSVal_con_info); return rts_getJSValzh(UNTAG_CLOSURE(box)->payload[0]); } @@ -188,7 +188,7 @@ void rts_schedulerLoop(void) { __attribute__((export_name("rts_promiseResolveUnit"))) void rts_promiseResolveUnit(HsStablePtr); void rts_promiseResolveUnit(HsStablePtr sp) - mk_rtsPromiseCallback(TAG_CLOSURE(1, Unit_closure)) + mk_rtsPromiseCallback(TAG_CLOSURE(1, ghc_hs_iface->Z0T_closure)) mk_rtsPromiseResolve(JSVal) mk_rtsPromiseResolve(Char) @@ -212,7 +212,7 @@ mk_rtsPromiseResolve(Bool) __attribute__((export_name("rts_promiseReject"))) void rts_promiseReject(HsStablePtr, HsJSVal); void rts_promiseReject(HsStablePtr sp, HsJSVal js_err) - mk_rtsPromiseCallback(rts_apply(cap, &ghczminternal_GHCziInternalziWasmziPrimziImports_raiseJSException_closure, rts_mkJSVal(cap, js_err))) + mk_rtsPromiseCallback(rts_apply(cap, ghc_hs_iface->raiseJSException_closure, rts_mkJSVal(cap, js_err))) __attribute__((export_name("rts_promiseThrowTo"))) void rts_promiseThrowTo(HsStablePtr, HsJSVal); @@ -229,7 +229,7 @@ void rts_promiseThrowTo(HsStablePtr sp, HsJSVal js_err) { cap, tso, rts_apply( cap, - &ghczminternal_GHCziInternalziWasmziPrimziImports_raiseJSException_closure, + ghc_hs_iface->raiseJSException_closure, rts_mkJSVal(cap, js_err))); tryWakeupThread(cap, tso); rts_schedulerLoop(); ===================================== utils/deriveConstants/Main.hs ===================================== @@ -667,6 +667,59 @@ wanteds os = concat ,structField C "StgAsyncIOResult" "errCode"] else [] + -- struct HsIface + ,structField C "HsIface" "processRemoteCompletion_closure" + ,structField C "HsIface" "runIO_closure" + ,structField C "HsIface" "runNonIO_closure" + ,structField C "HsIface" "Z0T_closure" + ,structField C "HsIface" "True_closure" + ,structField C "HsIface" "False_closure" + ,structField C "HsIface" "unpackCString_closure" + ,structField C "HsIface" "runFinalizzerBatch_closure" + ,structField C "HsIface" "stackOverflow_closure" + ,structField C "HsIface" "heapOverflow_closure" + ,structField C "HsIface" "allocationLimitExceeded_closure" + ,structField C "HsIface" "blockedIndefinitelyOnMVar_closure" + ,structField C "HsIface" "blockedIndefinitelyOnSTM_closure" + ,structField C "HsIface" "cannotCompactFunction_closure" + ,structField C "HsIface" "cannotCompactPinned_closure" + ,structField C "HsIface" "cannotCompactMutable_closure" + ,structField C "HsIface" "nonTermination_closure" + ,structField C "HsIface" "nestedAtomically_closure" + ,structField C "HsIface" "noMatchingContinuationPrompt_closure" + ,structField C "HsIface" "blockedOnBadFD_closure" + ,structField C "HsIface" "runSparks_closure" + ,structField C "HsIface" "ensureIOManagerIsRunning_closure" + ,structField C "HsIface" "interruptIOManager_closure" + ,structField C "HsIface" "ioManagerCapabilitiesChanged_closure" + ,structField C "HsIface" "runHandlersPtr_closure" + ,structField C "HsIface" "flushStdHandles_closure" + ,structField C "HsIface" "runMainIO_closure" + ,structField C "HsIface" "Czh_con_info" + ,structField C "HsIface" "Izh_con_info" + ,structField C "HsIface" "Fzh_con_info" + ,structField C "HsIface" "Dzh_con_info" + ,structField C "HsIface" "Wzh_con_info" + ,structField C "HsIface" "runAllocationLimitHandler_closure" + ,structField C "HsIface" "Ptr_con_info" + ,structField C "HsIface" "FunPtr_con_info" + ,structField C "HsIface" "I8zh_con_info" + ,structField C "HsIface" "I16zh_con_info" + ,structField C "HsIface" "I32zh_con_info" + ,structField C "HsIface" "I64zh_con_info" + ,structField C "HsIface" "W8zh_con_info" + ,structField C "HsIface" "W16zh_con_info" + ,structField C "HsIface" "W32zh_con_info" + ,structField C "HsIface" "W64zh_con_info" + ,structField C "HsIface" "StablePtr_con_info" + ,structField C "HsIface" "StackSnapshot_closure" + ,structField C "HsIface" "divZZeroException_closure" + ,structField C "HsIface" "underflowException_closure" + ,structField C "HsIface" "overflowException_closure" + ,structField C "HsIface" "unpackCStringzh_closure" + ,structField C "HsIface" "unpackCStringzh_info" + ,structField C "HsIface" "unpackCStringUtf8zh_info" + -- pre-compiled thunk types ,constantWord Haskell "MAX_SPEC_SELECTEE_SIZE" "MAX_SPEC_SELECTEE_SIZE" ,constantWord Haskell "MAX_SPEC_AP_SIZE" "MAX_SPEC_AP_SIZE" View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/0c47024a7d6fee9566b5b5769ae849… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/0c47024a7d6fee9566b5b5769ae849… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/T26166] 2 commits: rts: Dynamically initialize built-in closures
by Ben Gamari (＠bgamari) 26 Sep '25

26 Sep '25

Ben Gamari pushed to branch wip/T26166 at Glasgow Haskell Compiler / GHC Commits: 2843baef by Ben Gamari at 2025-09-26T12:50:59-04:00 rts: Dynamically initialize built-in closures - - - - - 0c47024a by Ben Gamari at 2025-09-26T12:50:59-04:00 rts: Avoid static symbol references to ghc-internal - - - - - 26 changed files: - compiler/GHC/HsToCore/Foreign/C.hs - + libraries/ghc-internal/cbits/RtsIface.c - libraries/ghc-internal/ghc-internal.cabal.in - + libraries/ghc-internal/include/RtsIfaceSymbols.h - + rts/BuiltinClosures.c - + rts/BuiltinClosures.h - rts/Compact.cmm - rts/ContinuationOps.cmm - rts/Exception.cmm - rts/Prelude.h - rts/PrimOps.cmm - rts/RtsAPI.c - rts/RtsStartup.c - + rts/RtsToHsIface.c - rts/Schedule.c - rts/StgMiscClosures.cmm - rts/StgStdThunks.cmm - rts/include/Rts.h - rts/include/RtsAPI.h - rts/include/rts/Constants.h - + rts/include/rts/RtsToHsIface.h - rts/include/stg/MiscClosures.h - rts/posix/Signals.c - rts/rts.cabal - rts/wasm/JSFFI.c - utils/deriveConstants/Main.hs Changes: ===================================== compiler/GHC/HsToCore/Foreign/C.hs ===================================== @@ -517,8 +517,8 @@ mkFExportCBits dflags c_nm maybe_target arg_htys res_hty is_IO_res_ty cc text "rts_apply" <> parens ( cap <> (if is_IO_res_ty - then text "runIO_closure" - else text "runNonIO_closure") + then text "ghc_hs_iface->runIO_closure" + else text "ghc_hs_iface->runNonIO_closure") <> comma <> expr_to_run ) <+> comma ===================================== libraries/ghc-internal/cbits/RtsIface.c ===================================== @@ -0,0 +1,42 @@ +/* + * (c) The GHC Team, 2025-2026 + * + * RTS/ghc-internal interface + * + * See Note [RTS/ghc-internal interface]. + */ + +#include "Rts.h" + +void init_ghc_hs_iface(void) __attribute__((constructor)); + +#define CLOSURE(module, symbol) \ + extern StgClosure ghczminternal_##module##_##symbol; + +#define UNDEF_CLOSURE(module, symbol) + +#define INFO_TBL(module, symbol) \ + extern StgInfoTable ghczminternal_##module##_##symbol; + +#include "RtsIfaceSymbols.h" + +#undef CLOSURE +#undef INFO_TBL + +#define CLOSURE(module, symbol) \ + .symbol = &ghczminternal_##module##_##symbol, + +#define UNDEF_CLOSURE(module, symbol) \ + .symbol = NULL, + +#define INFO_TBL(module, symbol) \ + .symbol = &ghczminternal_##module##_##symbol, + +HsIface the_ghc_hs_iface = { +#include "RtsIfaceSymbols.h" +}; + +void init_ghc_hs_iface(void) +{ + ghc_hs_iface = &the_ghc_hs_iface; +} ===================================== libraries/ghc-internal/ghc-internal.cabal.in ===================================== @@ -43,6 +43,7 @@ extra-source-files: include/winio_structs.h include/WordSize.h include/HsIntegerGmp.h.in + include/RtsIfaceSymbols.h install-sh source-repository head @@ -457,6 +458,7 @@ Library cbits/vectorQuotRem.c cbits/word2float.c cbits/Stack_c.c + cbits/RtsIface.c cmm-sources: cbits/StackCloningDecoding.cmm ===================================== libraries/ghc-internal/include/RtsIfaceSymbols.h ===================================== @@ -0,0 +1,59 @@ +// See Note [RTS/ghc-internal interface]. + +#if defined(mingw32_HOST_OS) +CLOSURE(GHCziInternalziEventziWindows, processRemoteCompletion_closure) +#else +UNDEF_CLOSURE(GHCziInternalziEventziWindows, processRemoteCompletion_closure) +#endif +CLOSURE(GHCziInternalziTopHandler, runIO_closure) +CLOSURE(GHCziInternalziTopHandler, runNonIO_closure) +CLOSURE(GHCziInternalziTuple, Z0T_closure) +CLOSURE(GHCziInternalziTypes, True_closure) +CLOSURE(GHCziInternalziTypes, False_closure) +CLOSURE(GHCziInternalziPack, unpackCString_closure) +CLOSURE(GHCziInternalziWeakziFinalizze, runFinalizzerBatch_closure) +CLOSURE(GHCziInternalziIOziException, stackOverflow_closure) +CLOSURE(GHCziInternalziIOziException, heapOverflow_closure) +CLOSURE(GHCziInternalziIOziException, allocationLimitExceeded_closure) +CLOSURE(GHCziInternalziIOziException, blockedIndefinitelyOnMVar_closure) +CLOSURE(GHCziInternalziIOziException, blockedIndefinitelyOnSTM_closure) +CLOSURE(GHCziInternalziIOziException, cannotCompactFunction_closure) +CLOSURE(GHCziInternalziIOziException, cannotCompactPinned_closure) +CLOSURE(GHCziInternalziIOziException, cannotCompactMutable_closure) +CLOSURE(GHCziInternalziControlziExceptionziBase, nonTermination_closure) +CLOSURE(GHCziInternalziControlziExceptionziBase, nestedAtomically_closure) +CLOSURE(GHCziInternalziControlziExceptionziBase, noMatchingContinuationPrompt_closure) +CLOSURE(GHCziInternalziEventziThread, blockedOnBadFD_closure) +CLOSURE(GHCziInternalziConcziSync, runSparks_closure) +CLOSURE(GHCziInternalziConcziIO, ensureIOManagerIsRunning_closure) +CLOSURE(GHCziInternalziConcziIO, interruptIOManager_closure) +CLOSURE(GHCziInternalziConcziIO, ioManagerCapabilitiesChanged_closure) +CLOSURE(GHCziInternalziConcziSignal, runHandlersPtr_closure) +CLOSURE(GHCziInternalziTopHandler, flushStdHandles_closure) +CLOSURE(GHCziInternalziTopHandler, runMainIO_closure) +INFO_TBL(GHCziInternalziTypes, Czh_con_info) +INFO_TBL(GHCziInternalziTypes, Izh_con_info) +INFO_TBL(GHCziInternalziTypes, Fzh_con_info) +INFO_TBL(GHCziInternalziTypes, Dzh_con_info) +INFO_TBL(GHCziInternalziTypes, Wzh_con_info) +CLOSURE(GHCziInternalziPrimziPanic, absentSumFieldError_closure) +CLOSURE(GHCziInternalziAllocationLimitHandler, runAllocationLimitHandler_closure) +INFO_TBL(GHCziInternalziPtr, Ptr_con_info) +INFO_TBL(GHCziInternalziPtr, FunPtr_con_info) +INFO_TBL(GHCziInternalziInt, I8zh_con_info) +INFO_TBL(GHCziInternalziInt, I16zh_con_info) +INFO_TBL(GHCziInternalziInt, I32zh_con_info) +INFO_TBL(GHCziInternalziInt, I64zh_con_info) +INFO_TBL(GHCziInternalziWord, W8zh_con_info) +INFO_TBL(GHCziInternalziWord, W16zh_con_info) +INFO_TBL(GHCziInternalziWord, W32zh_con_info) +INFO_TBL(GHCziInternalziWord, W64zh_con_info) +INFO_TBL(GHCziInternalziStable, StablePtr_con_info) +CLOSURE(GHCziInternalziStackziCloneStack, StackSnapshot_closure) +CLOSURE(GHCziInternalziExceptionziType, divZZeroException_closure) +CLOSURE(GHCziInternalziExceptionziType, underflowException_closure) +CLOSURE(GHCziInternalziExceptionziType, overflowException_closure) +CLOSURE(GHCziInternalziCString, unpackCStringzh_closure) +INFO_TBL(GHCziInternalziCString, unpackCStringzh_info) +INFO_TBL(GHCziInternalziCString, unpackCStringUtf8zh_info) + ===================================== rts/BuiltinClosures.c ===================================== @@ -0,0 +1,29 @@ +#include "Rts.h" +#include "BuiltinClosures.h" + +/* + * Note [CHARLIKE and INTLIKE closures] + * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + * These are static representations of Chars and small Ints, so that + * we can remove dynamic Chars and Ints during garbage collection and + * replace them with references to the static objects. + */ + +StgIntCharlikeClosure stg_INTLIKE_closure[MAX_INTLIKE - MIN_INTLIKE + 1]; +StgIntCharlikeClosure stg_CHARLIKE_closure[MAX_CHARLIKE - MIN_CHARLIKE + 1]; + +void initBuiltinClosures() { + // INTLIKE closures + for (int i = MIN_INTLIKE; i <= MAX_INTLIKE; i++) { + StgIntCharlikeClosure *c = &stg_INTLIKE_closure[i]; + SET_HDR((StgClosure* ) c, ghc_hs_iface->Izh_con_info, CCS_SYSTEM_OR_NULL); + c->data = MIN_INTLIKE + i; + } + + // CHARLIKE closures + for (int i = MIN_CHARLIKE; i <= MAX_CHARLIKE; i++) { + StgIntCharlikeClosure *c = &stg_CHARLIKE_closure[i]; + SET_HDR((StgClosure* ) c, ghc_hs_iface->Czh_con_info, CCS_SYSTEM_OR_NULL); + c->data = MIN_CHARLIKE + i; + } +} ===================================== rts/BuiltinClosures.h ===================================== @@ -0,0 +1 @@ +void initBuiltinClosures(void); ===================================== rts/Compact.cmm ===================================== @@ -10,9 +10,6 @@ #include "Cmm.h" #include "sm/ShouldCompact.h" -import CLOSURE ghczminternal_GHCziInternalziIOziException_cannotCompactFunction_closure; -import CLOSURE ghczminternal_GHCziInternalziIOziException_cannotCompactMutable_closure; -import CLOSURE ghczminternal_GHCziInternalziIOziException_cannotCompactPinned_closure; #if !defined(UnregisterisedCompiler) import CLOSURE g0; import CLOSURE large_alloc_lim; @@ -124,7 +121,7 @@ eval: SMALL_MUT_ARR_PTRS_CLEAN, SMALL_MUT_ARR_PTRS_DIRTY, COMPACT_NFDATA: { - jump stg_raisezh(ghczminternal_GHCziInternalziIOziException_cannotCompactMutable_closure); + jump stg_raisezh(HsIface_cannotCompactMutable_closure(W_[ghc_hs_iface])); } // We shouldn't see any functions, if this data structure was NFData. @@ -139,7 +136,7 @@ eval: BCO, PAP, CONTINUATION: { - jump stg_raisezh(ghczminternal_GHCziInternalziIOziException_cannotCompactFunction_closure); + jump stg_raisezh(HsIface_cannotCompactFunction_closure(W_[ghc_hs_iface])); } case ARR_WORDS: { @@ -147,7 +144,7 @@ eval: (should) = ccall shouldCompact(compact "ptr", p "ptr"); if (should == SHOULDCOMPACT_IN_CNF) { P_[pp] = p; return(); } if (should == SHOULDCOMPACT_PINNED) { - jump stg_raisezh(ghczminternal_GHCziInternalziIOziException_cannotCompactPinned_closure); + jump stg_raisezh(HsIface_cannotCompactPinned_closure(W_[ghc_hs_iface])); } CHECK_HASH(); ===================================== rts/ContinuationOps.cmm ===================================== @@ -12,7 +12,6 @@ #include "Cmm.h" -import CLOSURE ghczminternal_GHCziInternalziControlziExceptionziBase_noMatchingContinuationPrompt_closure; #if !defined(UnregisterisedCompiler) import CLOSURE ALLOC_RTS_ctr; import CLOSURE ALLOC_RTS_tot; @@ -104,7 +103,7 @@ stg_control0zh_ll // explicit stack // see Note [When capturing the continuation fails] in Continuation.c if (cont == NULL) (likely: False) { - jump stg_raisezh(ghczminternal_GHCziInternalziControlziExceptionziBase_noMatchingContinuationPrompt_closure); + jump stg_raisezh(HsIface_noMatchingContinuationPrompt_closure(W_[ghc_hs_iface])); } W_ apply_mask_frame; ===================================== rts/Exception.cmm ===================================== @@ -13,10 +13,6 @@ #include "Cmm.h" #include "RaiseAsync.h" -import CLOSURE ghczminternal_GHCziInternalziTypes_True_closure; -import CLOSURE ghczminternal_GHCziInternalziExceptionziType_divZZeroException_closure; -import CLOSURE ghczminternal_GHCziInternalziExceptionziType_underflowException_closure; -import CLOSURE ghczminternal_GHCziInternalziExceptionziType_overflowException_closure; #if !defined(UnregisterisedCompiler) import CLOSURE CATCHF_PUSHED_ctr; import CLOSURE RtsFlags; @@ -539,7 +535,7 @@ retry_pop_stack: Sp(10) = exception; Sp(9) = stg_raise_ret_info; Sp(8) = exception; - Sp(7) = ghczminternal_GHCziInternalziTypes_True_closure; // True <=> an exception + Sp(7) = HsIface_True_closure(W_[ghc_hs_iface]); // True <=> an exception Sp(6) = stg_ap_ppv_info; Sp(5) = 0; Sp(4) = stg_ap_n_info; @@ -650,17 +646,17 @@ stg_raiseIOzh (P_ exception) stg_raiseDivZZerozh () { - jump stg_raisezh(ghczminternal_GHCziInternalziExceptionziType_divZZeroException_closure); + jump stg_raisezh(HsIface_divZZeroException_closure(W_[ghc_hs_iface])); } stg_raiseUnderflowzh () { - jump stg_raisezh(ghczminternal_GHCziInternalziExceptionziType_underflowException_closure); + jump stg_raisezh(HsIface_underflowException_closure(W_[ghc_hs_iface])); } stg_raiseOverflowzh () { - jump stg_raisezh(ghczminternal_GHCziInternalziExceptionziType_overflowException_closure); + jump stg_raisezh(HsIface_overflowException_closure(W_[ghc_hs_iface])); } /* The FFI doesn't support variadic C functions so we can't directly expose ===================================== rts/Prelude.h ===================================== @@ -19,126 +19,69 @@ #define PRELUDE_CLOSURE(i) extern StgClosure (i) #endif -/* See Note [Wired-in exceptions are not CAFfy] in GHC.Core.Make. */ -PRELUDE_CLOSURE(ghczminternal_GHCziInternalziPrimziPanic_absentSumFieldError_closure); /* Define canonical names so we can abstract away from the actual * modules these names are defined in. */ -PRELUDE_CLOSURE(ghczminternal_GHCziInternalziTuple_Z0T_closure); -PRELUDE_CLOSURE(ghczminternal_GHCziInternalziTypes_True_closure); -PRELUDE_CLOSURE(ghczminternal_GHCziInternalziTypes_False_closure); -PRELUDE_CLOSURE(ghczminternal_GHCziInternalziPack_unpackCString_closure); -PRELUDE_CLOSURE(ghczminternal_GHCziInternalziPack_unpackCStringUtf8_closure); -PRELUDE_CLOSURE(ghczminternal_GHCziInternalziWeak_runFinalizzerBatch_closure); -PRELUDE_CLOSURE(ghczminternal_GHCziInternalziWeakziFinalizze_runFinalizzerBatch_closure); - #if defined(IN_STG_CODE) extern W_ ZCMain_main_closure[]; #else extern StgClosure ZCMain_main_closure; #endif -PRELUDE_CLOSURE(ghczminternal_GHCziInternalziIOziException_stackOverflow_closure); -PRELUDE_CLOSURE(ghczminternal_GHCziInternalziIOziException_heapOverflow_closure); -PRELUDE_CLOSURE(ghczminternal_GHCziInternalziIOziException_allocationLimitExceeded_closure); -PRELUDE_CLOSURE(ghczminternal_GHCziInternalziIOziException_blockedIndefinitelyOnMVar_closure); -PRELUDE_CLOSURE(ghczminternal_GHCziInternalziIOziException_blockedIndefinitelyOnSTM_closure); -PRELUDE_CLOSURE(ghczminternal_GHCziInternalziIOziException_cannotCompactFunction_closure); -PRELUDE_CLOSURE(ghczminternal_GHCziInternalziIOziException_cannotCompactPinned_closure); -PRELUDE_CLOSURE(ghczminternal_GHCziInternalziIOziException_cannotCompactMutable_closure); -PRELUDE_CLOSURE(ghczminternal_GHCziInternalziControlziExceptionziBase_nonTermination_closure); -PRELUDE_CLOSURE(ghczminternal_GHCziInternalziControlziExceptionziBase_nestedAtomically_closure); -PRELUDE_CLOSURE(ghczminternal_GHCziInternalziEventziThread_blockedOnBadFD_closure); -PRELUDE_CLOSURE(ghczminternal_GHCziInternalziExceptionziType_divZZeroException_closure); -PRELUDE_CLOSURE(ghczminternal_GHCziInternalziExceptionziType_underflowException_closure); -PRELUDE_CLOSURE(ghczminternal_GHCziInternalziExceptionziType_overflowException_closure); - -PRELUDE_CLOSURE(ghczminternal_GHCziInternalziConcziSync_runSparks_closure); -PRELUDE_CLOSURE(ghczminternal_GHCziInternalziConcziIO_ensureIOManagerIsRunning_closure); -PRELUDE_CLOSURE(ghczminternal_GHCziInternalziConcziIO_interruptIOManager_closure); -PRELUDE_CLOSURE(ghczminternal_GHCziInternalziConcziIO_ioManagerCapabilitiesChanged_closure); -PRELUDE_CLOSURE(ghczminternal_GHCziInternalziConcziSignal_runHandlersPtr_closure); -#if defined(mingw32_HOST_OS) -PRELUDE_CLOSURE(ghczminternal_GHCziInternalziEventziWindows_processRemoteCompletion_closure); -#endif - -PRELUDE_CLOSURE(ghczminternal_GHCziInternalziTopHandler_flushStdHandles_closure); -PRELUDE_CLOSURE(ghczminternal_GHCziInternalziTopHandler_runMainIO_closure); -PRELUDE_CLOSURE(ghczminternal_GHCziInternalziAllocationLimitHandler_runAllocationLimitHandler_closure); - -PRELUDE_INFO(ghczminternal_GHCziInternalziCString_unpackCStringzh_info); -PRELUDE_INFO(ghczminternal_GHCziInternalziTypes_Czh_con_info); -PRELUDE_INFO(ghczminternal_GHCziInternalziTypes_Izh_con_info); -PRELUDE_INFO(ghczminternal_GHCziInternalziTypes_Fzh_con_info); -PRELUDE_INFO(ghczminternal_GHCziInternalziTypes_Dzh_con_info); -PRELUDE_INFO(ghczminternal_GHCziInternalziTypes_Wzh_con_info); - -PRELUDE_INFO(ghczminternal_GHCziInternalziPtr_Ptr_con_info); -PRELUDE_INFO(ghczminternal_GHCziInternalziPtr_FunPtr_con_info); -PRELUDE_INFO(ghczminternal_GHCziInternalziInt_I8zh_con_info); -PRELUDE_INFO(ghczminternal_GHCziInternalziInt_I16zh_con_info); -PRELUDE_INFO(ghczminternal_GHCziInternalziInt_I32zh_con_info); -PRELUDE_INFO(ghczminternal_GHCziInternalziInt_I64zh_con_info); -PRELUDE_INFO(ghczminternal_GHCziInternalziWord_W8zh_con_info); -PRELUDE_INFO(ghczminternal_GHCziInternalziWord_W16zh_con_info); -PRELUDE_INFO(ghczminternal_GHCziInternalziWord_W32zh_con_info); -PRELUDE_INFO(ghczminternal_GHCziInternalziWord_W64zh_con_info); -PRELUDE_INFO(ghczminternal_GHCziInternalziStable_StablePtr_con_info); - -#define Unit_closure (&(ghczminternal_GHCziInternalziTuple_Z0T_closure)) -#define True_closure (&(ghczminternal_GHCziInternalziTypes_True_closure)) -#define False_closure (&(ghczminternal_GHCziInternalziTypes_False_closure)) -#define unpackCString_closure (&(ghczminternal_GHCziInternalziPack_unpackCString_closure)) -#define runFinalizerBatch_closure (&(ghczminternal_GHCziInternalziWeakziFinalizze_runFinalizzerBatch_closure)) +#define Unit_closure ghc_hs_iface->Z0T_closure +#define True_closure ghc_hs_iface->True_closure +#define False_closure ghc_hs_iface->False_closure +#define unpackCString_closure ghc_hs_iface->unpackCString_closure +#define runFinalizerBatch_closure ghc_hs_iface->runFinalizzerBatch_closure #define mainIO_closure (&ZCMain_main_closure) -#define runSparks_closure (&(ghczminternal_GHCziInternalziConcziSync_runSparks_closure)) -#define ensureIOManagerIsRunning_closure (&(ghczminternal_GHCziInternalziConcziIO_ensureIOManagerIsRunning_closure)) -#define interruptIOManager_closure (&(ghczminternal_GHCziInternalziConcziIO_interruptIOManager_closure)) -#define ioManagerCapabilitiesChanged_closure (&(ghczminternal_GHCziInternalziConcziIO_ioManagerCapabilitiesChanged_closure)) -#define runHandlersPtr_closure (&(ghczminternal_GHCziInternalziConcziSignal_runHandlersPtr_closure)) +#define runSparks_closure ghc_hs_iface->runSparks_closure +#define ensureIOManagerIsRunning_closure ghc_hs_iface->ensureIOManagerIsRunning_closure +#define interruptIOManager_closure ghc_hs_iface->interruptIOManager_closure +#define ioManagerCapabilitiesChanged_closure ghc_hs_iface->ioManagerCapabilitiesChanged_closure +#define runHandlersPtr_closure ghc_hs_iface->runHandlersPtr_closure #if defined(mingw32_HOST_OS) -#define processRemoteCompletion_closure (&(ghczminternal_GHCziInternalziEventziWindows_processRemoteCompletion_closure)) +#define processRemoteCompletion_closure ghc_hs_iface->processRemoteCompletion_closure #endif -#define runAllocationLimitHandler_closure (&(ghczminternal_GHCziInternalziAllocationLimitHandler_runAllocationLimitHandler_closure)) - -#define flushStdHandles_closure (&(ghczminternal_GHCziInternalziTopHandler_flushStdHandles_closure)) -#define runMainIO_closure (&(ghczminternal_GHCziInternalziTopHandler_runMainIO_closure)) - -#define stackOverflow_closure (&(ghczminternal_GHCziInternalziIOziException_stackOverflow_closure)) -#define heapOverflow_closure (&(ghczminternal_GHCziInternalziIOziException_heapOverflow_closure)) -#define allocationLimitExceeded_closure (&(ghczminternal_GHCziInternalziIOziException_allocationLimitExceeded_closure)) -#define blockedIndefinitelyOnMVar_closure (&(ghczminternal_GHCziInternalziIOziException_blockedIndefinitelyOnMVar_closure)) -#define blockedIndefinitelyOnSTM_closure (&(ghczminternal_GHCziInternalziIOziException_blockedIndefinitelyOnSTM_closure)) -#define cannotCompactFunction_closure (&(ghczminternal_GHCziInternalziIOziException_cannotCompactFunction_closure)) -#define cannotCompactPinned_closure (&(ghczminternal_GHCziInternalziIOziException_cannotCompactPinned_closure)) -#define cannotCompactMutable_closure (&(ghczminternal_GHCziInternalziIOziException_cannotCompactMutable_closure)) -#define nonTermination_closure (&(ghczminternal_GHCziInternalziControlziExceptionziBase_nonTermination_closure)) -#define nestedAtomically_closure (&(ghczminternal_GHCziInternalziControlziExceptionziBase_nestedAtomically_closure)) -#define absentSumFieldError_closure (&(ghczminternal_GHCziInternalziPrimziPanic_absentSumFieldError_closure)) -#define underflowException_closure (&(ghczminternal_GHCziInternalziExceptionziType_underflowException_closure)) -#define overflowException_closure (&(ghczminternal_GHCziInternalziExceptionziType_overflowException_closure)) -#define divZeroException_closure (&(ghczminternal_GHCziInternalziExceptionziType_divZZeroException_closure)) - -#define blockedOnBadFD_closure (&(ghczminternal_GHCziInternalziEventziThread_blockedOnBadFD_closure)) - -#define Czh_con_info (&(ghczminternal_GHCziInternalziTypes_Czh_con_info)) -#define Izh_con_info (&(ghczminternal_GHCziInternalziTypes_Izh_con_info)) -#define Fzh_con_info (&(ghczminternal_GHCziInternalziTypes_Fzh_con_info)) -#define Dzh_con_info (&(ghczminternal_GHCziInternalziTypes_Dzh_con_info)) -#define Wzh_con_info (&(ghczminternal_GHCziInternalziTypes_Wzh_con_info)) -#define W8zh_con_info (&(ghczminternal_GHCziInternalziWord_W8zh_con_info)) -#define W16zh_con_info (&(ghczminternal_GHCziInternalziWord_W16zh_con_info)) -#define W32zh_con_info (&(ghczminternal_GHCziInternalziWord_W32zh_con_info)) -#define W64zh_con_info (&(ghczminternal_GHCziInternalziWord_W64zh_con_info)) -#define I8zh_con_info (&(ghczminternal_GHCziInternalziInt_I8zh_con_info)) -#define I16zh_con_info (&(ghczminternal_GHCziInternalziInt_I16zh_con_info)) -#define I32zh_con_info (&(ghczminternal_GHCziInternalziInt_I32zh_con_info)) -#define I64zh_con_info (&(ghczminternal_GHCziInternalziInt_I64zh_con_info)) -#define I64zh_con_info (&(ghczminternal_GHCziInternalziInt_I64zh_con_info)) -#define Ptr_con_info (&(ghczminternal_GHCziInternalziPtr_Ptr_con_info)) -#define FunPtr_con_info (&(ghczminternal_GHCziInternalziPtr_FunPtr_con_info)) -#define StablePtr_static_info (&(ghczminternal_GHCziInternalziStable_StablePtr_static_info)) -#define StablePtr_con_info (&(ghczminternal_GHCziInternalziStable_StablePtr_con_info)) +#define runAllocationLimitHandler_closure ghc_hs_iface->runAllocationLimitHandler_closure + +#define flushStdHandles_closure ghc_hs_iface->flushStdHandles_closure +#define runMainIO_closure ghc_hs_iface->runMainIO_closure + +#define stackOverflow_closure ghc_hs_iface->stackOverflow_closure +#define heapOverflow_closure ghc_hs_iface->heapOverflow_closure +#define allocationLimitExceeded_closure ghc_hs_iface->allocationLimitExceeded_closure +#define blockedIndefinitelyOnMVar_closure ghc_hs_iface->blockedIndefinitelyOnMVar_closure +#define blockedIndefinitelyOnSTM_closure ghc_hs_iface->blockedIndefinitelyOnSTM_closure +#define cannotCompactFunction_closure ghc_hs_iface->cannotCompactFunction_closure +#define cannotCompactPinned_closure ghc_hs_iface->cannotCompactPinned_closure +#define cannotCompactMutable_closure ghc_hs_iface->cannotCompactMutable_closure +#define nonTermination_closure ghc_hs_iface->nonTermination_closure +#define nestedAtomically_closure ghc_hs_iface->nestedAtomically_closure +#define absentSumFieldError_closure ghc_hs_iface->absentSumFieldError_closure +#define underflowException_closure ghc_hs_iface->underflowException_closure +#define overflowException_closure ghc_hs_iface->overflowException_closure +#define divZeroException_closure ghc_hs_iface->divZZeroException_closure + +#define blockedOnBadFD_closure ghc_hs_iface->blockedOnBadFD_closure + +#define Czh_con_info ghc_hs_iface->Czh_con_info +#define Izh_con_info ghc_hs_iface->Izh_con_info +#define Fzh_con_info ghc_hs_iface->Fzh_con_info +#define Dzh_con_info ghc_hs_iface->Dzh_con_info +#define Wzh_con_info ghc_hs_iface->Wzh_con_info +#define W8zh_con_info ghc_hs_iface->W8zh_con_info +#define W16zh_con_info ghc_hs_iface->W16zh_con_info +#define W32zh_con_info ghc_hs_iface->W32zh_con_info +#define W64zh_con_info ghc_hs_iface->W64zh_con_info +#define I8zh_con_info ghc_hs_iface->I8zh_con_info +#define I16zh_con_info ghc_hs_iface->I16zh_con_info +#define I32zh_con_info ghc_hs_iface->I32zh_con_info +#define I64zh_con_info ghc_hs_iface->I64zh_con_info +#define I64zh_con_info ghc_hs_iface->I64zh_con_info +#define Ptr_con_info ghc_hs_iface->Ptr_con_info +#define FunPtr_con_info ghc_hs_iface->FunPtr_con_info +#define StablePtr_static_info ghc_hs_iface->StablePtr_static_info +#define StablePtr_con_info ghc_hs_iface->StablePtr_con_info ===================================== rts/PrimOps.cmm ===================================== @@ -25,12 +25,8 @@ #include "MachDeps.h" #include "SMPClosureOps.h" -import CLOSURE ghczminternal_GHCziInternalziControlziExceptionziBase_nestedAtomically_closure; -import CLOSURE ghczminternal_GHCziInternalziIOziException_heapOverflow_closure; -import CLOSURE ghczminternal_GHCziInternalziIOziException_blockedIndefinitelyOnMVar_closure; import AcquireSRWLockExclusive; import ReleaseSRWLockExclusive; -import CLOSURE ghczminternal_GHCziInternalziTypes_False_closure; #if defined(PROFILING) import CLOSURE CCS_MAIN; #endif @@ -118,7 +114,7 @@ stg_newByteArrayzh ( W_ n ) ("ptr" p) = ccall allocateArrBytes(MyCapability() "ptr", n, CCCS); if (p == NULL) (likely: False) { - jump stg_raisezh(ghczminternal_GHCziInternalziIOziException_heapOverflow_closure); + jump stg_raisezh(HsIface_heapOverflow_closure(W_[ghc_hs_iface])); } return (p); } @@ -135,7 +131,7 @@ stg_newPinnedByteArrayzh ( W_ n ) ("ptr" p) = ccall allocateArrBytesPinned(MyCapability() "ptr", n, BA_ALIGN, CCCS); if (p == NULL) (likely: False) { - jump stg_raisezh(ghczminternal_GHCziInternalziIOziException_heapOverflow_closure); + jump stg_raisezh(HsIface_heapOverflow_closure(W_[ghc_hs_iface])); } return (p); } @@ -149,7 +145,7 @@ stg_newAlignedPinnedByteArrayzh ( W_ n, W_ alignment ) ("ptr" p) = ccall allocateArrBytesPinned(MyCapability() "ptr", n, alignment, CCCS); if (p == NULL) (likely: False) { - jump stg_raisezh(ghczminternal_GHCziInternalziIOziException_heapOverflow_closure); + jump stg_raisezh(HsIface_heapOverflow_closure(W_[ghc_hs_iface])); } return (p); } @@ -364,7 +360,7 @@ stg_newArrayzh ( W_ n /* words */, gcptr init ) ("ptr" arr) = ccall allocateMutArrPtrs(MyCapability() "ptr", n, CCCS); if (arr == NULL) (likely: False) { - jump stg_raisezh(ghczminternal_GHCziInternalziIOziException_heapOverflow_closure); + jump stg_raisezh(HsIface_heapOverflow_closure(W_[ghc_hs_iface])); } // Initialise all elements of the array with the value init @@ -474,7 +470,7 @@ stg_newSmallArrayzh ( W_ n /* words */, gcptr init ) ("ptr" arr) = ccall allocateSmallMutArrPtrs(MyCapability() "ptr", n, CCCS); if (arr == NULL) (likely: False) { - jump stg_raisezh(ghczminternal_GHCziInternalziIOziException_heapOverflow_closure); + jump stg_raisezh(HsIface_heapOverflow_closure(W_[ghc_hs_iface])); } // Initialise all elements of the array with the value init @@ -1090,7 +1086,7 @@ stg_listThreadszh () ("ptr" arr) = ccall listThreads(MyCapability() "ptr"); if (arr == NULL) (likely: False) { - jump stg_raisezh(ghczminternal_GHCziInternalziIOziException_heapOverflow_closure); + jump stg_raisezh(HsIface_heapOverflow_closure(W_[ghc_hs_iface])); } return (arr); @@ -1360,7 +1356,7 @@ stg_atomicallyzh (P_ stm) /* Nested transactions are not allowed; raise an exception */ if (old_trec != NO_TREC) (likely: False) { - jump stg_raisezh(ghczminternal_GHCziInternalziControlziExceptionziBase_nestedAtomically_closure); + jump stg_raisezh(HsIface_nestedAtomically_closure(W_[ghc_hs_iface])); } code = stm; @@ -2231,7 +2227,7 @@ stg_unpackClosurezh ( P_ closure ) dat_arr_sz = SIZEOF_StgArrBytes + WDS(len); ("ptr" dat_arr) = ccall allocateMightFail(MyCapability() "ptr", BYTES_TO_WDS(dat_arr_sz)); if (dat_arr == NULL) (likely: False) { - jump stg_raisezh(ghczminternal_GHCziInternalziIOziException_heapOverflow_closure); + jump stg_raisezh(HsIface_heapOverflow_closure(W_[ghc_hs_iface])); } TICK_ALLOC_PRIM(SIZEOF_StgArrBytes, WDS(len), 0); @@ -2251,7 +2247,7 @@ for: ("ptr" ptrArray) = foreign "C" heap_view_closurePtrs(MyCapability() "ptr", clos "ptr"); if (ptrArray == NULL) (likely: False) { - jump stg_raisezh(ghczminternal_GHCziInternalziIOziException_heapOverflow_closure); + jump stg_raisezh(HsIface_heapOverflow_closure(W_[ghc_hs_iface])); } return (info, dat_arr, ptrArray); @@ -2518,13 +2514,13 @@ stg_getSparkzh () W_ spark; #if !defined(THREADED_RTS) - return (0,ghczminternal_GHCziInternalziTypes_False_closure); + return (0,HsIface_False_closure(W_[ghc_hs_iface])); #else ("ptr" spark) = ccall findSpark(MyCapability() "ptr"); if (spark != 0) { return (1,spark); } else { - return (0,ghczminternal_GHCziInternalziTypes_False_closure); + return (0,HsIface_False_closure(W_[ghc_hs_iface])); } #endif } ===================================== rts/RtsAPI.c ===================================== @@ -509,7 +509,7 @@ void rts_evalStableIOMain(/* inout */ Capability **cap, SchedulerStatus stat; p = (StgClosure *)deRefStablePtr(s); - w = rts_apply(*cap, &ghczminternal_GHCziInternalziTopHandler_runMainIO_closure, p); + w = rts_apply(*cap, runMainIO_closure, p); tso = createStrictIOThread(*cap, RtsFlags.GcFlags.initialStkSize, w); // async exceptions are always blocked by default in the created // thread. See #1048. @@ -961,7 +961,7 @@ void rts_done (void) void hs_try_putmvar (/* in */ int capability, /* in */ HsStablePtr mvar) { - hs_try_putmvar_with_value(capability, mvar, TAG_CLOSURE(1, Unit_closure)); + hs_try_putmvar_with_value(capability, mvar, TAG_CLOSURE(1, ghc_hs_iface->Z0T_closure)); } void hs_try_putmvar_with_value (/* in */ int capability, ===================================== rts/RtsStartup.c ===================================== @@ -14,6 +14,7 @@ #include "linker/MMap.h" #include "RtsFlags.h" #include "RtsUtils.h" +#include "BuiltinClosures.h" #include "Prelude.h" #include "Printer.h" /* DEBUG_LoadSymbols */ #include "Schedule.h" /* initScheduler */ @@ -182,8 +183,8 @@ static void initBuiltinGcRoots(void) * these closures `Id`s of these can be safely marked as non-CAFFY * in the compiler. */ - getStablePtr((StgPtr)runIO_closure); - getStablePtr((StgPtr)runNonIO_closure); + getStablePtr((StgPtr)ghc_hs_iface->runIO_closure); + getStablePtr((StgPtr)ghc_hs_iface->runNonIO_closure); getStablePtr((StgPtr)flushStdHandles_closure); getStablePtr((StgPtr)runFinalizerBatch_closure); @@ -262,6 +263,14 @@ hs_init_ghc(int *argc, char **argv[], RtsConfig rts_config) setlocale(LC_CTYPE,""); + if (ghc_hs_iface == NULL) { + errorBelch("hs_init_ghc: ghc_hs_iface is uninitialized"); + stg_exit(1); + } + + + initBuiltinClosures(); + /* Initialise the stats department, phase 0 */ initStats0(); ===================================== rts/RtsToHsIface.c ===================================== @@ -0,0 +1,45 @@ +/* + * (c) The GHC Team, 2025-2026 + * + * RTS/ghc-internal interface + * + * + * Note [RTS/ghc-internal interface] + * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + * + * The runtime system depends upon a variety of symbols defined by Haskell + * modules living in `ghc-internal`. To avoid cyclic dependencies between + * ghc-internal and the RTS, these symbols are referenced indirectly via the + * the `HsIface` structure (specifically `ghc_hs_iface`): + * + * struct HsIface { + * StgClosure *runIO; // GHC.Internal.TopHandler.runIO + * StgClosure *Z0T; // GHC.Internal.Tuple.() + * // etc. + * }; + * + * `ghc_hs_iface` is initialized during program loading via the + * `init_ghc_hs_iface` constructor in `ghc-interface` + * + * const struct HsIface the_hs_iface = { + * .runIO = &ghczminternal_GHCziInternalziTopHandler_runIO_closure, + * .Z0T = &ghczminternal_GHCziInternalziTuple_Z0T_closure, + * // etc. + * }; + * + * void __attribute__((constructor)) init_ghc_hs_iface() { + * ghc_hs_iface = &the_hs_iface; + * } + * + * This effectively breaks the RTS's link-time dependency, replacing it with a + * run-time dependency at the cost of an indirection. It also has the pleasant + * side-effect of making the interface between the RTS and `ghc-internal` + * explicit. + * + */ + +#include "Rts.h" + +// This captures the symbols provided by ghc-internal which +// are needed by the RTS. +const HsIface *ghc_hs_iface = NULL; ===================================== rts/Schedule.c ===================================== @@ -1053,7 +1053,7 @@ scheduleProcessInbox (Capability **pcap USED_IF_THREADS) while (p != NULL) { pnext = p->link; performTryPutMVar(cap, (StgMVar*)deRefStablePtr(p->mvar), - Unit_closure); + ghc_hs_iface->Z0T_closure); freeStablePtr(p->mvar); stgFree(p); p = pnext; ===================================== rts/StgMiscClosures.cmm ===================================== @@ -13,8 +13,6 @@ #include "Cmm.h" import pthread_mutex_lock; -import ghczminternal_GHCziInternalziTypes_Czh_info; -import ghczminternal_GHCziInternalziTypes_Izh_info; import AcquireSRWLockExclusive; import ReleaseSRWLockExclusive; @@ -23,7 +21,6 @@ import whitehole_lockClosure_spin; import whitehole_lockClosure_yield; #endif - #if !defined(UnregisterisedCompiler) import CLOSURE CCS_SYSTEM; import CLOSURE ENT_DYN_IND_ctr; @@ -1031,554 +1028,3 @@ INFO_TABLE_CONSTR(stg_ASYNCIO_LIVE0,0,0,0,CONSTR_NOCAF,"ASYNCIO_LIVE0","ASYNCIO_ { foreign "C" barf("ASYNCIO_LIVE0 object (%p) entered!", R1) never returns; } CLOSURE(stg_ASYNCIO_LIVE0_closure,stg_ASYNCIO_LIVE0); - -/* ---------------------------------------------------------------------------- - Note [CHARLIKE and INTLIKE closures] - ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - These are static representations of Chars and small Ints, so that - we can remove dynamic Chars and Ints during garbage collection and - replace them with references to the static objects. - ------------------------------------------------------------------------- */ - -#define Char_hash_con_info ghczminternal_GHCziInternalziTypes_Czh_con_info -#define Int_hash_con_info ghczminternal_GHCziInternalziTypes_Izh_con_info - -#define CHARLIKE_HDR(n) CLOSURE(Char_hash_con_info, n) -#define INTLIKE_HDR(n) CLOSURE(Int_hash_con_info, n) - -section "data" { - stg_CHARLIKE_closure: - CHARLIKE_HDR(0) - CHARLIKE_HDR(1) - CHARLIKE_HDR(2) - CHARLIKE_HDR(3) - CHARLIKE_HDR(4) - CHARLIKE_HDR(5) - CHARLIKE_HDR(6) - CHARLIKE_HDR(7) - CHARLIKE_HDR(8) - CHARLIKE_HDR(9) - CHARLIKE_HDR(10) - CHARLIKE_HDR(11) - CHARLIKE_HDR(12) - CHARLIKE_HDR(13) - CHARLIKE_HDR(14) - CHARLIKE_HDR(15) - CHARLIKE_HDR(16) - CHARLIKE_HDR(17) - CHARLIKE_HDR(18) - CHARLIKE_HDR(19) - CHARLIKE_HDR(20) - CHARLIKE_HDR(21) - CHARLIKE_HDR(22) - CHARLIKE_HDR(23) - CHARLIKE_HDR(24) - CHARLIKE_HDR(25) - CHARLIKE_HDR(26) - CHARLIKE_HDR(27) - CHARLIKE_HDR(28) - CHARLIKE_HDR(29) - CHARLIKE_HDR(30) - CHARLIKE_HDR(31) - CHARLIKE_HDR(32) - CHARLIKE_HDR(33) - CHARLIKE_HDR(34) - CHARLIKE_HDR(35) - CHARLIKE_HDR(36) - CHARLIKE_HDR(37) - CHARLIKE_HDR(38) - CHARLIKE_HDR(39) - CHARLIKE_HDR(40) - CHARLIKE_HDR(41) - CHARLIKE_HDR(42) - CHARLIKE_HDR(43) - CHARLIKE_HDR(44) - CHARLIKE_HDR(45) - CHARLIKE_HDR(46) - CHARLIKE_HDR(47) - CHARLIKE_HDR(48) - CHARLIKE_HDR(49) - CHARLIKE_HDR(50) - CHARLIKE_HDR(51) - CHARLIKE_HDR(52) - CHARLIKE_HDR(53) - CHARLIKE_HDR(54) - CHARLIKE_HDR(55) - CHARLIKE_HDR(56) - CHARLIKE_HDR(57) - CHARLIKE_HDR(58) - CHARLIKE_HDR(59) - CHARLIKE_HDR(60) - CHARLIKE_HDR(61) - CHARLIKE_HDR(62) - CHARLIKE_HDR(63) - CHARLIKE_HDR(64) - CHARLIKE_HDR(65) - CHARLIKE_HDR(66) - CHARLIKE_HDR(67) - CHARLIKE_HDR(68) - CHARLIKE_HDR(69) - CHARLIKE_HDR(70) - CHARLIKE_HDR(71) - CHARLIKE_HDR(72) - CHARLIKE_HDR(73) - CHARLIKE_HDR(74) - CHARLIKE_HDR(75) - CHARLIKE_HDR(76) - CHARLIKE_HDR(77) - CHARLIKE_HDR(78) - CHARLIKE_HDR(79) - CHARLIKE_HDR(80) - CHARLIKE_HDR(81) - CHARLIKE_HDR(82) - CHARLIKE_HDR(83) - CHARLIKE_HDR(84) - CHARLIKE_HDR(85) - CHARLIKE_HDR(86) - CHARLIKE_HDR(87) - CHARLIKE_HDR(88) - CHARLIKE_HDR(89) - CHARLIKE_HDR(90) - CHARLIKE_HDR(91) - CHARLIKE_HDR(92) - CHARLIKE_HDR(93) - CHARLIKE_HDR(94) - CHARLIKE_HDR(95) - CHARLIKE_HDR(96) - CHARLIKE_HDR(97) - CHARLIKE_HDR(98) - CHARLIKE_HDR(99) - CHARLIKE_HDR(100) - CHARLIKE_HDR(101) - CHARLIKE_HDR(102) - CHARLIKE_HDR(103) - CHARLIKE_HDR(104) - CHARLIKE_HDR(105) - CHARLIKE_HDR(106) - CHARLIKE_HDR(107) - CHARLIKE_HDR(108) - CHARLIKE_HDR(109) - CHARLIKE_HDR(110) - CHARLIKE_HDR(111) - CHARLIKE_HDR(112) - CHARLIKE_HDR(113) - CHARLIKE_HDR(114) - CHARLIKE_HDR(115) - CHARLIKE_HDR(116) - CHARLIKE_HDR(117) - CHARLIKE_HDR(118) - CHARLIKE_HDR(119) - CHARLIKE_HDR(120) - CHARLIKE_HDR(121) - CHARLIKE_HDR(122) - CHARLIKE_HDR(123) - CHARLIKE_HDR(124) - CHARLIKE_HDR(125) - CHARLIKE_HDR(126) - CHARLIKE_HDR(127) - CHARLIKE_HDR(128) - CHARLIKE_HDR(129) - CHARLIKE_HDR(130) - CHARLIKE_HDR(131) - CHARLIKE_HDR(132) - CHARLIKE_HDR(133) - CHARLIKE_HDR(134) - CHARLIKE_HDR(135) - CHARLIKE_HDR(136) - CHARLIKE_HDR(137) - CHARLIKE_HDR(138) - CHARLIKE_HDR(139) - CHARLIKE_HDR(140) - CHARLIKE_HDR(141) - CHARLIKE_HDR(142) - CHARLIKE_HDR(143) - CHARLIKE_HDR(144) - CHARLIKE_HDR(145) - CHARLIKE_HDR(146) - CHARLIKE_HDR(147) - CHARLIKE_HDR(148) - CHARLIKE_HDR(149) - CHARLIKE_HDR(150) - CHARLIKE_HDR(151) - CHARLIKE_HDR(152) - CHARLIKE_HDR(153) - CHARLIKE_HDR(154) - CHARLIKE_HDR(155) - CHARLIKE_HDR(156) - CHARLIKE_HDR(157) - CHARLIKE_HDR(158) - CHARLIKE_HDR(159) - CHARLIKE_HDR(160) - CHARLIKE_HDR(161) - CHARLIKE_HDR(162) - CHARLIKE_HDR(163) - CHARLIKE_HDR(164) - CHARLIKE_HDR(165) - CHARLIKE_HDR(166) - CHARLIKE_HDR(167) - CHARLIKE_HDR(168) - CHARLIKE_HDR(169) - CHARLIKE_HDR(170) - CHARLIKE_HDR(171) - CHARLIKE_HDR(172) - CHARLIKE_HDR(173) - CHARLIKE_HDR(174) - CHARLIKE_HDR(175) - CHARLIKE_HDR(176) - CHARLIKE_HDR(177) - CHARLIKE_HDR(178) - CHARLIKE_HDR(179) - CHARLIKE_HDR(180) - CHARLIKE_HDR(181) - CHARLIKE_HDR(182) - CHARLIKE_HDR(183) - CHARLIKE_HDR(184) - CHARLIKE_HDR(185) - CHARLIKE_HDR(186) - CHARLIKE_HDR(187) - CHARLIKE_HDR(188) - CHARLIKE_HDR(189) - CHARLIKE_HDR(190) - CHARLIKE_HDR(191) - CHARLIKE_HDR(192) - CHARLIKE_HDR(193) - CHARLIKE_HDR(194) - CHARLIKE_HDR(195) - CHARLIKE_HDR(196) - CHARLIKE_HDR(197) - CHARLIKE_HDR(198) - CHARLIKE_HDR(199) - CHARLIKE_HDR(200) - CHARLIKE_HDR(201) - CHARLIKE_HDR(202) - CHARLIKE_HDR(203) - CHARLIKE_HDR(204) - CHARLIKE_HDR(205) - CHARLIKE_HDR(206) - CHARLIKE_HDR(207) - CHARLIKE_HDR(208) - CHARLIKE_HDR(209) - CHARLIKE_HDR(210) - CHARLIKE_HDR(211) - CHARLIKE_HDR(212) - CHARLIKE_HDR(213) - CHARLIKE_HDR(214) - CHARLIKE_HDR(215) - CHARLIKE_HDR(216) - CHARLIKE_HDR(217) - CHARLIKE_HDR(218) - CHARLIKE_HDR(219) - CHARLIKE_HDR(220) - CHARLIKE_HDR(221) - CHARLIKE_HDR(222) - CHARLIKE_HDR(223) - CHARLIKE_HDR(224) - CHARLIKE_HDR(225) - CHARLIKE_HDR(226) - CHARLIKE_HDR(227) - CHARLIKE_HDR(228) - CHARLIKE_HDR(229) - CHARLIKE_HDR(230) - CHARLIKE_HDR(231) - CHARLIKE_HDR(232) - CHARLIKE_HDR(233) - CHARLIKE_HDR(234) - CHARLIKE_HDR(235) - CHARLIKE_HDR(236) - CHARLIKE_HDR(237) - CHARLIKE_HDR(238) - CHARLIKE_HDR(239) - CHARLIKE_HDR(240) - CHARLIKE_HDR(241) - CHARLIKE_HDR(242) - CHARLIKE_HDR(243) - CHARLIKE_HDR(244) - CHARLIKE_HDR(245) - CHARLIKE_HDR(246) - CHARLIKE_HDR(247) - CHARLIKE_HDR(248) - CHARLIKE_HDR(249) - CHARLIKE_HDR(250) - CHARLIKE_HDR(251) - CHARLIKE_HDR(252) - CHARLIKE_HDR(253) - CHARLIKE_HDR(254) - CHARLIKE_HDR(255) -} - -section "data" { - stg_INTLIKE_closure: - INTLIKE_HDR(-16) /* MIN_INTLIKE == -16 */ - INTLIKE_HDR(-15) - INTLIKE_HDR(-14) - INTLIKE_HDR(-13) - INTLIKE_HDR(-12) - INTLIKE_HDR(-11) - INTLIKE_HDR(-10) - INTLIKE_HDR(-9) - INTLIKE_HDR(-8) - INTLIKE_HDR(-7) - INTLIKE_HDR(-6) - INTLIKE_HDR(-5) - INTLIKE_HDR(-4) - INTLIKE_HDR(-3) - INTLIKE_HDR(-2) - INTLIKE_HDR(-1) - INTLIKE_HDR(0) - INTLIKE_HDR(1) - INTLIKE_HDR(2) - INTLIKE_HDR(3) - INTLIKE_HDR(4) - INTLIKE_HDR(5) - INTLIKE_HDR(6) - INTLIKE_HDR(7) - INTLIKE_HDR(8) - INTLIKE_HDR(9) - INTLIKE_HDR(10) - INTLIKE_HDR(11) - INTLIKE_HDR(12) - INTLIKE_HDR(13) - INTLIKE_HDR(14) - INTLIKE_HDR(15) - INTLIKE_HDR(16) - INTLIKE_HDR(17) - INTLIKE_HDR(18) - INTLIKE_HDR(19) - INTLIKE_HDR(20) - INTLIKE_HDR(21) - INTLIKE_HDR(22) - INTLIKE_HDR(23) - INTLIKE_HDR(24) - INTLIKE_HDR(25) - INTLIKE_HDR(26) - INTLIKE_HDR(27) - INTLIKE_HDR(28) - INTLIKE_HDR(29) - INTLIKE_HDR(30) - INTLIKE_HDR(31) - INTLIKE_HDR(32) - INTLIKE_HDR(33) - INTLIKE_HDR(34) - INTLIKE_HDR(35) - INTLIKE_HDR(36) - INTLIKE_HDR(37) - INTLIKE_HDR(38) - INTLIKE_HDR(39) - INTLIKE_HDR(40) - INTLIKE_HDR(41) - INTLIKE_HDR(42) - INTLIKE_HDR(43) - INTLIKE_HDR(44) - INTLIKE_HDR(45) - INTLIKE_HDR(46) - INTLIKE_HDR(47) - INTLIKE_HDR(48) - INTLIKE_HDR(49) - INTLIKE_HDR(50) - INTLIKE_HDR(51) - INTLIKE_HDR(52) - INTLIKE_HDR(53) - INTLIKE_HDR(54) - INTLIKE_HDR(55) - INTLIKE_HDR(56) - INTLIKE_HDR(57) - INTLIKE_HDR(58) - INTLIKE_HDR(59) - INTLIKE_HDR(60) - INTLIKE_HDR(61) - INTLIKE_HDR(62) - INTLIKE_HDR(63) - INTLIKE_HDR(64) - INTLIKE_HDR(65) - INTLIKE_HDR(66) - INTLIKE_HDR(67) - INTLIKE_HDR(68) - INTLIKE_HDR(69) - INTLIKE_HDR(70) - INTLIKE_HDR(71) - INTLIKE_HDR(72) - INTLIKE_HDR(73) - INTLIKE_HDR(74) - INTLIKE_HDR(75) - INTLIKE_HDR(76) - INTLIKE_HDR(77) - INTLIKE_HDR(78) - INTLIKE_HDR(79) - INTLIKE_HDR(80) - INTLIKE_HDR(81) - INTLIKE_HDR(82) - INTLIKE_HDR(83) - INTLIKE_HDR(84) - INTLIKE_HDR(85) - INTLIKE_HDR(86) - INTLIKE_HDR(87) - INTLIKE_HDR(88) - INTLIKE_HDR(89) - INTLIKE_HDR(90) - INTLIKE_HDR(91) - INTLIKE_HDR(92) - INTLIKE_HDR(93) - INTLIKE_HDR(94) - INTLIKE_HDR(95) - INTLIKE_HDR(96) - INTLIKE_HDR(97) - INTLIKE_HDR(98) - INTLIKE_HDR(99) - INTLIKE_HDR(100) - INTLIKE_HDR(101) - INTLIKE_HDR(102) - INTLIKE_HDR(103) - INTLIKE_HDR(104) - INTLIKE_HDR(105) - INTLIKE_HDR(106) - INTLIKE_HDR(107) - INTLIKE_HDR(108) - INTLIKE_HDR(109) - INTLIKE_HDR(110) - INTLIKE_HDR(111) - INTLIKE_HDR(112) - INTLIKE_HDR(113) - INTLIKE_HDR(114) - INTLIKE_HDR(115) - INTLIKE_HDR(116) - INTLIKE_HDR(117) - INTLIKE_HDR(118) - INTLIKE_HDR(119) - INTLIKE_HDR(120) - INTLIKE_HDR(121) - INTLIKE_HDR(122) - INTLIKE_HDR(123) - INTLIKE_HDR(124) - INTLIKE_HDR(125) - INTLIKE_HDR(126) - INTLIKE_HDR(127) - INTLIKE_HDR(128) - INTLIKE_HDR(129) - INTLIKE_HDR(130) - INTLIKE_HDR(131) - INTLIKE_HDR(132) - INTLIKE_HDR(133) - INTLIKE_HDR(134) - INTLIKE_HDR(135) - INTLIKE_HDR(136) - INTLIKE_HDR(137) - INTLIKE_HDR(138) - INTLIKE_HDR(139) - INTLIKE_HDR(140) - INTLIKE_HDR(141) - INTLIKE_HDR(142) - INTLIKE_HDR(143) - INTLIKE_HDR(144) - INTLIKE_HDR(145) - INTLIKE_HDR(146) - INTLIKE_HDR(147) - INTLIKE_HDR(148) - INTLIKE_HDR(149) - INTLIKE_HDR(150) - INTLIKE_HDR(151) - INTLIKE_HDR(152) - INTLIKE_HDR(153) - INTLIKE_HDR(154) - INTLIKE_HDR(155) - INTLIKE_HDR(156) - INTLIKE_HDR(157) - INTLIKE_HDR(158) - INTLIKE_HDR(159) - INTLIKE_HDR(160) - INTLIKE_HDR(161) - INTLIKE_HDR(162) - INTLIKE_HDR(163) - INTLIKE_HDR(164) - INTLIKE_HDR(165) - INTLIKE_HDR(166) - INTLIKE_HDR(167) - INTLIKE_HDR(168) - INTLIKE_HDR(169) - INTLIKE_HDR(170) - INTLIKE_HDR(171) - INTLIKE_HDR(172) - INTLIKE_HDR(173) - INTLIKE_HDR(174) - INTLIKE_HDR(175) - INTLIKE_HDR(176) - INTLIKE_HDR(177) - INTLIKE_HDR(178) - INTLIKE_HDR(179) - INTLIKE_HDR(180) - INTLIKE_HDR(181) - INTLIKE_HDR(182) - INTLIKE_HDR(183) - INTLIKE_HDR(184) - INTLIKE_HDR(185) - INTLIKE_HDR(186) - INTLIKE_HDR(187) - INTLIKE_HDR(188) - INTLIKE_HDR(189) - INTLIKE_HDR(190) - INTLIKE_HDR(191) - INTLIKE_HDR(192) - INTLIKE_HDR(193) - INTLIKE_HDR(194) - INTLIKE_HDR(195) - INTLIKE_HDR(196) - INTLIKE_HDR(197) - INTLIKE_HDR(198) - INTLIKE_HDR(199) - INTLIKE_HDR(200) - INTLIKE_HDR(201) - INTLIKE_HDR(202) - INTLIKE_HDR(203) - INTLIKE_HDR(204) - INTLIKE_HDR(205) - INTLIKE_HDR(206) - INTLIKE_HDR(207) - INTLIKE_HDR(208) - INTLIKE_HDR(209) - INTLIKE_HDR(210) - INTLIKE_HDR(211) - INTLIKE_HDR(212) - INTLIKE_HDR(213) - INTLIKE_HDR(214) - INTLIKE_HDR(215) - INTLIKE_HDR(216) - INTLIKE_HDR(217) - INTLIKE_HDR(218) - INTLIKE_HDR(219) - INTLIKE_HDR(220) - INTLIKE_HDR(221) - INTLIKE_HDR(222) - INTLIKE_HDR(223) - INTLIKE_HDR(224) - INTLIKE_HDR(225) - INTLIKE_HDR(226) - INTLIKE_HDR(227) - INTLIKE_HDR(228) - INTLIKE_HDR(229) - INTLIKE_HDR(230) - INTLIKE_HDR(231) - INTLIKE_HDR(232) - INTLIKE_HDR(233) - INTLIKE_HDR(234) - INTLIKE_HDR(235) - INTLIKE_HDR(236) - INTLIKE_HDR(237) - INTLIKE_HDR(238) - INTLIKE_HDR(239) - INTLIKE_HDR(240) - INTLIKE_HDR(241) - INTLIKE_HDR(242) - INTLIKE_HDR(243) - INTLIKE_HDR(244) - INTLIKE_HDR(245) - INTLIKE_HDR(246) - INTLIKE_HDR(247) - INTLIKE_HDR(248) - INTLIKE_HDR(249) - INTLIKE_HDR(250) - INTLIKE_HDR(251) - INTLIKE_HDR(252) - INTLIKE_HDR(253) - INTLIKE_HDR(254) - INTLIKE_HDR(255) /* MAX_INTLIKE == 255 - See #16961 for why 255 */ -} ===================================== rts/StgStdThunks.cmm ===================================== @@ -13,8 +13,6 @@ #include "Cmm.h" #include "Updates.h" -import CLOSURE ghczminternal_GHCziInternalziCString_unpackCStringzh_info; -import CLOSURE ghczminternal_GHCziInternalziCString_unpackCStringUtf8zh_info; #if !defined(UnregisterisedCompiler) import CLOSURE STK_CHK_ctr; import CLOSURE stg_bh_upd_frame_info; @@ -348,7 +346,7 @@ stg_do_unpack_cstring(P_ node, P_ newCAF_ret) { W_ str; str = StgThunk_payload(node, 2); push (UPDATE_FRAME_FIELDS(,,stg_bh_upd_frame_info, CCCS, 0, newCAF_ret)) { - jump %ENTRY_CODE(ghczminternal_GHCziInternalziCString_unpackCStringzh_info)(node, str); + jump %ENTRY_CODE(HsIface_unpackCStringzh_info(W_[ghc_hs_iface]))(node, str); } } @@ -372,7 +370,7 @@ stg_do_unpack_cstring_utf8(P_ node, P_ newCAF_ret) { W_ str; str = StgThunk_payload(node, 2); push (UPDATE_FRAME_FIELDS(,,stg_bh_upd_frame_info, CCCS, 0, newCAF_ret)) { - jump %ENTRY_CODE(ghczminternal_GHCziInternalziCString_unpackCStringUtf8zh_info)(node, str); + jump %ENTRY_CODE(HsIface_unpackCStringUtf8zh_info(W_[ghc_hs_iface]))(node, str); } } ===================================== rts/include/Rts.h ===================================== @@ -229,6 +229,7 @@ void _warnFail(const char *filename, unsigned int linenum); #include "rts/storage/ClosureTypes.h" #include "rts/storage/TSO.h" #include "stg/MiscClosures.h" /* InfoTables, closures etc. defined in the RTS */ + #include "rts/storage/Block.h" #include "rts/storage/ClosureMacros.h" #include "rts/storage/MBlock.h" ===================================== rts/include/RtsAPI.h ===================================== @@ -18,6 +18,7 @@ extern "C" { #include "HsFFI.h" #include "rts/Time.h" #include "rts/Types.h" +#include "rts/RtsToHsIface.h" /* * Running the scheduler @@ -584,11 +585,6 @@ void rts_done (void); // Note that RtsAPI.h is also included by foreign export stubs in // the base package itself. // -extern StgClosure ghczminternal_GHCziInternalziTopHandler_runIO_closure; -extern StgClosure ghczminternal_GHCziInternalziTopHandler_runNonIO_closure; - -#define runIO_closure (&(ghczminternal_GHCziInternalziTopHandler_runIO_closure)) -#define runNonIO_closure (&(ghczminternal_GHCziInternalziTopHandler_runNonIO_closure)) /* ------------------------------------------------------------------------ */ ===================================== rts/include/rts/Constants.h ===================================== @@ -57,11 +57,12 @@ #define MAX_SPEC_CONSTR_SIZE 2 /* Range of built-in table of static small int-like and char-like closures. + * Range is inclusive of both minimum and maximum. * * NB. This corresponds with the number of actual INTLIKE/CHARLIKE * closures defined in rts/StgMiscClosures.cmm. */ -#define MAX_INTLIKE 255 +#define MAX_INTLIKE 255 /* See #16961 for why 255 */ #define MIN_INTLIKE (-16) #define MAX_CHARLIKE 255 ===================================== rts/include/rts/RtsToHsIface.h ===================================== @@ -0,0 +1,64 @@ +/* + * (c) The GHC Team, 2025-2026 + * + * RTS/ghc-internal interface + * + * See Note [RTS/ghc-internal interface]. + */ + +typedef struct { + StgClosure *processRemoteCompletion_closure; // GHC.Internal.Event.Windows.processRemoteCompletion_closure + StgClosure *runIO_closure; // GHC.Internal.TopHandler.runIO_closure + StgClosure *runNonIO_closure; // GHC.Internal.TopHandler.runNonIO_closure + StgClosure *Z0T_closure; // GHC.Internal.Tuple.Z0T_closure + StgClosure *True_closure; // GHC.Internal.Types.True_closure + StgClosure *False_closure; // GHC.Internal.Types.False_closure + StgClosure *unpackCString_closure; // GHC.Internal.Pack.unpackCString_closure + StgClosure *runFinalizzerBatch_closure; // GHC.Internal.Weak.Finalizze.runFinalizzerBatch_closure + StgClosure *stackOverflow_closure; // GHC.Internal.IO.Exception.stackOverflow_closure + StgClosure *heapOverflow_closure; // GHC.Internal.IO.Exception.heapOverflow_closure + StgClosure *allocationLimitExceeded_closure; // GHC.Internal.IO.Exception.allocationLimitExceeded_closure + StgClosure *blockedIndefinitelyOnMVar_closure; // GHC.Internal.IO.Exception.blockedIndefinitelyOnMVar_closure + StgClosure *blockedIndefinitelyOnSTM_closure; // GHC.Internal.IO.Exception.blockedIndefinitelyOnSTM_closure + StgClosure *cannotCompactFunction_closure; // GHC.Internal.IO.Exception.cannotCompactFunction_closure + StgClosure *cannotCompactPinned_closure; // GHC.Internal.IO.Exception.cannotCompactPinned_closure + StgClosure *cannotCompactMutable_closure; // GHC.Internal.IO.Exception.cannotCompactMutable_closure + StgClosure *nonTermination_closure; // GHC.Internal.Control.Exception.Base.nonTermination_closure + StgClosure *nestedAtomically_closure; // GHC.Internal.Control.Exception.Base.nestedAtomically_closure + StgClosure *noMatchingContinuationPrompt_closure; // GHC.Internal.Control.Exception.Base.noMatchingContinuationPrompt_closure + StgClosure *blockedOnBadFD_closure; // GHC.Internal.Event.Thread.blockedOnBadFD_closure + StgClosure *runSparks_closure; // GHC.Internal.Conc.Sync.runSparks_closure + StgClosure *ensureIOManagerIsRunning_closure; // GHC.Internal.Conc.IO.ensureIOManagerIsRunning_closure + StgClosure *interruptIOManager_closure; // GHC.Internal.Conc.IO.interruptIOManager_closure + StgClosure *ioManagerCapabilitiesChanged_closure; // GHC.Internal.Conc.IO.ioManagerCapabilitiesChanged_closure + StgClosure *runHandlersPtr_closure; // GHC.Internal.Conc.Signal.runHandlersPtr_closure + StgClosure *flushStdHandles_closure; // GHC.Internal.TopHandler.flushStdHandles_closure + StgClosure *runMainIO_closure; // GHC.Internal.TopHandler.runMainIO_closure + StgInfoTable *Czh_con_info; // GHC.Internal.Types.Czh_con_info + StgInfoTable *Izh_con_info; // GHC.Internal.Types.Izh_con_info + StgInfoTable *Fzh_con_info; // GHC.Internal.Types.Fzh_con_info + StgInfoTable *Dzh_con_info; // GHC.Internal.Types.Dzh_con_info + StgInfoTable *Wzh_con_info; // GHC.Internal.Types.Wzh_con_info + StgClosure *absentSumFieldError_closure; // GHC.Internal.Prim.Panic.absentSumFieldError_closure + StgClosure *runAllocationLimitHandler_closure; // GHC.Internal.AllocationLimitHandler.runAllocationLimitHandler_closure + StgInfoTable *Ptr_con_info; // GHC.Internal.Ptr.Ptr_con_info + StgInfoTable *FunPtr_con_info; // GHC.Internal.Ptr.FunPtr_con_info + StgInfoTable *I8zh_con_info; // GHC.Internal.Int.I8zh_con_info + StgInfoTable *I16zh_con_info; // GHC.Internal.Int.I16zh_con_info + StgInfoTable *I32zh_con_info; // GHC.Internal.Int.I32zh_con_info + StgInfoTable *I64zh_con_info; // GHC.Internal.Int.I64zh_con_info + StgInfoTable *W8zh_con_info; // GHC.Internal.Word.W8zh_con_info + StgInfoTable *W16zh_con_info; // GHC.Internal.Word.W16zh_con_info + StgInfoTable *W32zh_con_info; // GHC.Internal.Word.W32zh_con_info + StgInfoTable *W64zh_con_info; // GHC.Internal.Word.W64zh_con_info + StgInfoTable *StablePtr_con_info; // GHC.Internal.Stable.StablePtr_con_info + StgClosure *StackSnapshot_closure; // GHC.Internal.Stack.CloneStack.StackSnapshot_closure + StgClosure *divZZeroException_closure; // GHC.Internal.Exception.Type.divZeroException_closure + StgClosure *underflowException_closure; // GHC.Internal.Exception.Type.underflowException_closure + StgClosure *overflowException_closure; // GHC.Internal.Exception.Type.overflowException_closure + StgClosure *unpackCStringzh_closure; // GHC.Internal.CString.unpackCStringzh_closure + StgInfoTable *unpackCStringzh_info; // GHC.Internal.CString.unpackCStringzh_info + StgInfoTable *unpackCStringUtf8zh_info; // GHC.Internal.CString.unpackCStringUtf8zh_info +} HsIface; + +extern const HsIface *ghc_hs_iface; ===================================== rts/include/stg/MiscClosures.h ===================================== @@ -277,8 +277,8 @@ RTS_ENTRY(stg_NO_FINALIZER); extern StgWordArray stg_CHARLIKE_closure; extern StgWordArray stg_INTLIKE_closure; #else -extern StgIntCharlikeClosure stg_CHARLIKE_closure[]; -extern StgIntCharlikeClosure stg_INTLIKE_closure[]; +extern StgIntCharlikeClosure stg_CHARLIKE_closure[MAX_CHARLIKE - MIN_CHARLIKE + 1]; +extern StgIntCharlikeClosure stg_INTLIKE_closure[MAX_INTLIKE - MIN_INTLIKE + 1]; #endif /* StgStartup */ ===================================== rts/posix/Signals.c ===================================== @@ -222,7 +222,7 @@ ioManagerDie (void) void ioManagerStartCap (Capability **cap) { - rts_evalIO(cap,&ghczminternal_GHCziInternalziConcziIO_ensureIOManagerIsRunning_closure,NULL); + rts_evalIO(cap,ensureIOManagerIsRunning_closure,NULL); } void @@ -493,7 +493,7 @@ startSignalHandlers(Capability *cap) RtsFlags.GcFlags.initialStkSize, rts_apply(cap, rts_apply(cap, - &ghczminternal_GHCziInternalziConcziSignal_runHandlersPtr_closure, + runHandlersPtr_closure, rts_mkPtr(cap, info)), rts_mkInt(cap, info->si_signo))); scheduleThread(cap, t); ===================================== rts/rts.cabal ===================================== @@ -334,6 +334,7 @@ library rts/storage/InfoTables.h rts/storage/MBlock.h rts/storage/TSO.h + rts/RtsToHsIface.h stg/MachRegs.h stg/MachRegs/arm32.h stg/MachRegs/arm64.h @@ -403,6 +404,7 @@ library adjustor/AdjustorPool.c ExecPage.c Arena.c + BuiltinClosures.c Capability.c CheckUnload.c CheckVectorSupport.c @@ -448,6 +450,7 @@ library RtsStartup.c RtsSymbolInfo.c RtsSymbols.c + RtsToHsIface.c RtsUtils.c STM.c Schedule.c ===================================== rts/wasm/JSFFI.c ===================================== @@ -23,8 +23,8 @@ int __main_argc_argv(int argc, char *argv[]) { hs_init_ghc(&argc, &argv, __conf); // See Note [threadDelay on wasm] for details. rts_JSFFI_flag = HS_BOOL_TRUE; - getStablePtr((StgPtr)&ghczminternal_GHCziInternalziWasmziPrimziImports_raiseJSException_closure); - rts_threadDelay_impl = getStablePtr((StgPtr)&ghczminternal_GHCziInternalziWasmziPrimziConcziInternal_threadDelay_closure); + getStablePtr((StgPtr)ghc_hs_iface->raiseJSException_closure); + rts_threadDelay_impl = getStablePtr((StgPtr)ghc_hs_iface->threadDelay_closure); return 0; } @@ -112,7 +112,7 @@ HaskellObj rts_mkJSVal(Capability *cap, HsJSVal v) { SET_HDR(w, &stg_WEAK_info, CCS_SYSTEM); w->cfinalizers = (StgClosure *)cfin; w->key = p; - w->value = Unit_closure; + w->value = ghc_hs_iface->Z0T_closure; w->finalizer = &stg_NO_FINALIZER_closure; w->link = cap->weak_ptr_list_hd; cap->weak_ptr_list_hd = w; @@ -123,7 +123,7 @@ HaskellObj rts_mkJSVal(Capability *cap, HsJSVal v) { p->payload[0] = (HaskellObj)w; HaskellObj box = (HaskellObj)allocate(cap, CONSTR_sizeW(1, 0)); - SET_HDR(box, &ghczminternal_GHCziInternalziWasmziPrimziTypes_JSVal_con_info, CCS_SYSTEM); + SET_HDR(box, ghc_hs_iface->JSVal_con_info, CCS_SYSTEM); box->payload[0] = p; return TAG_CLOSURE(1, box); @@ -139,7 +139,7 @@ STATIC_INLINE HsJSVal rts_getJSValzh(HaskellObj p) { HsJSVal rts_getJSVal(HaskellObj); HsJSVal rts_getJSVal(HaskellObj box) { - ASSERT(UNTAG_CLOSURE(box)->header.info == &ghczminternal_GHCziInternalziWasmziPrimziTypes_JSVal_con_info); + ASSERT(UNTAG_CLOSURE(box)->header.info == ghc_hs_iface->JSVal_con_info); return rts_getJSValzh(UNTAG_CLOSURE(box)->payload[0]); } @@ -188,7 +188,7 @@ void rts_schedulerLoop(void) { __attribute__((export_name("rts_promiseResolveUnit"))) void rts_promiseResolveUnit(HsStablePtr); void rts_promiseResolveUnit(HsStablePtr sp) - mk_rtsPromiseCallback(TAG_CLOSURE(1, Unit_closure)) + mk_rtsPromiseCallback(TAG_CLOSURE(1, ghc_hs_iface->Z0T_closure)) mk_rtsPromiseResolve(JSVal) mk_rtsPromiseResolve(Char) @@ -212,7 +212,7 @@ mk_rtsPromiseResolve(Bool) __attribute__((export_name("rts_promiseReject"))) void rts_promiseReject(HsStablePtr, HsJSVal); void rts_promiseReject(HsStablePtr sp, HsJSVal js_err) - mk_rtsPromiseCallback(rts_apply(cap, &ghczminternal_GHCziInternalziWasmziPrimziImports_raiseJSException_closure, rts_mkJSVal(cap, js_err))) + mk_rtsPromiseCallback(rts_apply(cap, ghc_hs_iface->raiseJSException_closure, rts_mkJSVal(cap, js_err))) __attribute__((export_name("rts_promiseThrowTo"))) void rts_promiseThrowTo(HsStablePtr, HsJSVal); @@ -229,7 +229,7 @@ void rts_promiseThrowTo(HsStablePtr sp, HsJSVal js_err) { cap, tso, rts_apply( cap, - &ghczminternal_GHCziInternalziWasmziPrimziImports_raiseJSException_closure, + ghc_hs_iface->raiseJSException_closure, rts_mkJSVal(cap, js_err))); tryWakeupThread(cap, tso); rts_schedulerLoop(); ===================================== utils/deriveConstants/Main.hs ===================================== @@ -667,6 +667,59 @@ wanteds os = concat ,structField C "StgAsyncIOResult" "errCode"] else [] + -- struct HsIface + ,structField C "HsIface" "processRemoteCompletion_closure" + ,structField C "HsIface" "runIO_closure" + ,structField C "HsIface" "runNonIO_closure" + ,structField C "HsIface" "Z0T_closure" + ,structField C "HsIface" "True_closure" + ,structField C "HsIface" "False_closure" + ,structField C "HsIface" "unpackCString_closure" + ,structField C "HsIface" "runFinalizzerBatch_closure" + ,structField C "HsIface" "stackOverflow_closure" + ,structField C "HsIface" "heapOverflow_closure" + ,structField C "HsIface" "allocationLimitExceeded_closure" + ,structField C "HsIface" "blockedIndefinitelyOnMVar_closure" + ,structField C "HsIface" "blockedIndefinitelyOnSTM_closure" + ,structField C "HsIface" "cannotCompactFunction_closure" + ,structField C "HsIface" "cannotCompactPinned_closure" + ,structField C "HsIface" "cannotCompactMutable_closure" + ,structField C "HsIface" "nonTermination_closure" + ,structField C "HsIface" "nestedAtomically_closure" + ,structField C "HsIface" "noMatchingContinuationPrompt_closure" + ,structField C "HsIface" "blockedOnBadFD_closure" + ,structField C "HsIface" "runSparks_closure" + ,structField C "HsIface" "ensureIOManagerIsRunning_closure" + ,structField C "HsIface" "interruptIOManager_closure" + ,structField C "HsIface" "ioManagerCapabilitiesChanged_closure" + ,structField C "HsIface" "runHandlersPtr_closure" + ,structField C "HsIface" "flushStdHandles_closure" + ,structField C "HsIface" "runMainIO_closure" + ,structField C "HsIface" "Czh_con_info" + ,structField C "HsIface" "Izh_con_info" + ,structField C "HsIface" "Fzh_con_info" + ,structField C "HsIface" "Dzh_con_info" + ,structField C "HsIface" "Wzh_con_info" + ,structField C "HsIface" "runAllocationLimitHandler_closure" + ,structField C "HsIface" "Ptr_con_info" + ,structField C "HsIface" "FunPtr_con_info" + ,structField C "HsIface" "I8zh_con_info" + ,structField C "HsIface" "I16zh_con_info" + ,structField C "HsIface" "I32zh_con_info" + ,structField C "HsIface" "I64zh_con_info" + ,structField C "HsIface" "W8zh_con_info" + ,structField C "HsIface" "W16zh_con_info" + ,structField C "HsIface" "W32zh_con_info" + ,structField C "HsIface" "W64zh_con_info" + ,structField C "HsIface" "StablePtr_con_info" + ,structField C "HsIface" "StackSnapshot_closure" + ,structField C "HsIface" "divZZeroException_closure" + ,structField C "HsIface" "underflowException_closure" + ,structField C "HsIface" "overflowException_closure" + ,structField C "HsIface" "unpackCStringzh_closure" + ,structField C "HsIface" "unpackCStringzh_info" + ,structField C "HsIface" "unpackCStringUtf8zh_info" + -- pre-compiled thunk types ,constantWord Haskell "MAX_SPEC_SELECTEE_SIZE" "MAX_SPEC_SELECTEE_SIZE" ,constantWord Haskell "MAX_SPEC_AP_SIZE" "MAX_SPEC_AP_SIZE" View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/25f24794255333130290c9c83225ab… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/25f24794255333130290c9c83225ab… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/T23162-spj] 25 commits: Allow disabling builtin rules (#20298)
by Simon Peyton Jones (＠simonpj) 26 Sep '25

26 Sep '25

Simon Peyton Jones pushed to branch wip/T23162-spj at Glasgow Haskell Compiler / GHC Commits: 5ae89054 by Sylvain Henry at 2025-09-24T17:07:00-04:00 Allow disabling builtin rules (#20298) Add a way to disable built-in rules programmatically and with a debug flag. I also took the opportunity to add a debug flag to disable bignum rules, which was only possible programmatically (e.g. in a plugin). - - - - - 135242ca by Rodrigo Mesquita at 2025-09-24T17:07:44-04:00 Don't use build CFLAGS and friends as target settings In the GHC in tree configure, `CFLAGS`, `CXXFLAGS`, and similar tool configuration flags apply to the BUILD phase of the compiler, i.e. to the tools run to compile GHC itself. Notably, they should /not/ be carried over to the Target settings, i.e. these flags should /not/ apply to the tool which GHC invokes at runtime. Fixes #25637 - - - - - b418408b by Irene Knapp at 2025-09-25T09:47:54-04:00 Document etymology of "bind" as the name for `>>=` It took me twenty years of contemplation to realize why it's called that. I therefore feel that it may not be obvious to beginners. - - - - - e9c5e46f by Brandon Chinn at 2025-09-25T09:48:36-04:00 Fix tabs in string gaps (#26415) Tabs in string gaps were broken in bb030d0d because previously, string gaps were manually parsed, but now it's lexed by the usual Alex grammar and post-processed after successful lexing. It broke because of a discrepancy between GHC's lexer grammar and the Haskell Report. The Haskell Report includes tabs in whitechar: whitechar → newline | vertab | space | tab | uniWhite $whitechar used to include tabs until 18 years ago, when it was removed in order to exclude tabs from $white_no_nl in order to warn on tabs: 6e202120. In this MR, I'm adding \t back into $whitechar, and explicitly excluding \t from the $white_no_nl+ rule ignoring all whitespace in source code, which more accurately colocates the "ignore all whitespace except tabs, which is handled in the next line" logic. As a side effect of this MR, tabs are now allowed in pragmas; currently, a pragma written as {-# \t LANGUAGE ... #-} is interpreted as the tab character being the pragma name, and GHC warns "Unrecognized pragma". With this change, tabs are ignored as whitespace, which more closely matches the Report anyway. - - - - - 8bf5b309 by Cheng Shao at 2025-09-25T09:49:18-04:00 wasm: remove the --no-turbo-fast-api-calls hack from dynamic linker shebang This patch removes the `--no-turbo-fast-api-calls` hack from the dyld script shebang; it was used to workaround v8 fast call coredumps in nodejs and no longer needed, and comes with a performance penalty, hence the removal. - - - - - f0aa9041 by Richard Eisenberg at 2025-09-26T17:16:01+01:00 Move some fundep solving to new spot Work in progress...[skip ci] This completes moving dict fundeps to the main loop We need wanted/wanted fundeps too ...and some other refactors Wibbles Make FunDeps into a new module Solve new_eqs rather than adding them to WantedConstraints Wibble Import wibbles Comments only [skip ci] WIP on FunDeps [skip ci] Work in progress [skip ci] More WIP Wibbles to fundeps [skip ci] Kill off kickOutAfterUnification More wibbles Need to remove the unification-count stuff entirely and do more tidying up -- this commit is mainly for CI Wibbles solver Iterate the simples more often than plugins Start to extend to equalities Whitespace only Small improvements Wibbles - - - - - d5cc2868 by Simon Peyton Jones at 2025-09-26T17:16:01+01:00 Improved error messages from fundep changes - - - - - 8613cbba by Simon Peyton Jones at 2025-09-26T17:16:01+01:00 Wibbles - - - - - c949c8be by Simon Peyton Jones at 2025-09-26T17:16:01+01:00 Fix typo - - - - - c39db9b6 by Simon Peyton Jones at 2025-09-26T17:16:01+01:00 Wibbles - - - - - 21df47fe by Simon Peyton Jones at 2025-09-26T17:16:01+01:00 Nuke FunDepOrigin1 and 2 - - - - - 15254924 by Simon Peyton Jones at 2025-09-26T17:16:01+01:00 Wibble - - - - - 92dd9ead by Simon Peyton Jones at 2025-09-26T17:16:02+01:00 More refactoring - - - - - df72a283 by Simon Peyton Jones at 2025-09-26T17:16:02+01:00 More tidying up - - - - - 4993153d by Simon Peyton Jones at 2025-09-26T17:16:02+01:00 Yet more - - - - - 2656dc08 by Simon Peyton Jones at 2025-09-26T17:16:02+01:00 Wibbles - - - - - 9a96f472 by Simon Peyton Jones at 2025-09-26T17:16:02+01:00 Wibbles [skip ci] - - - - - 6d560e2b by Simon Peyton Jones at 2025-09-26T17:16:02+01:00 Naming and comments only [skip ci] - - - - - 0a4f786e by Simon Peyton Jones at 2025-09-26T17:16:02+01:00 Progress [skip ci]x - - - - - c41b5938 by Simon Peyton Jones at 2025-09-26T17:16:02+01:00 Make it compile .. with now story on WhatUnifications - - - - - b3dd75a1 by Simon Peyton Jones at 2025-09-26T17:16:02+01:00 Stop putting QLInstVar into the tc_lvl environment [skip ci] This is really a bug! See (TCAPP2) Not done yet - - - - - 6a5eb4a9 by Simon Peyton Jones at 2025-09-26T17:16:02+01:00 Now it compiles - - - - - ea57abeb by Simon Peyton Jones at 2025-09-26T17:16:02+01:00 Accept error message changes Plus compile time improvement Metrics: compile_time/bytes allocated Baseline Test value New value Change ---------------------- -------------------------------------- T5030(normal) 173,839,232 148,115,248 -14.8% GOOD hard_hole_fits(normal) 286,768,048 284,015,416 -1.0% geo. mean -0.2% minimum -14.8% maximum +0.3% Metric Decrease: T5030 - - - - - 69eec23e by Simon Peyton Jones at 2025-09-26T17:16:02+01:00 QuickLook's tcInstFun should make instantiation variables directly tcInstFun must make "instantiation variables", not regular unification variables, when instantiating function types. That was previously implemented by a hack: set the /ambient/ level to QLInstTyVar. But the hack finally bit me, when I was refactoring WhatUnifications. And it was always wrong: see the now-expunged (TCAPP2) note. This commit does it right, by making tcInstFun call its own instantiation functions. That entails a small bit of duplication, but the result is much, much cleaner. - - - - - 7c68ae04 by Simon Peyton Jones at 2025-09-26T17:16:02+01:00 Wibbles - - - - - 80 changed files: - compiler/GHC/Core/Opt/ConstantFold.hs - compiler/GHC/Core/Rules.hs - compiler/GHC/Core/Rules/Config.hs - compiler/GHC/Core/TyCon.hs - compiler/GHC/Driver/Config/Core/Rules.hs - compiler/GHC/Driver/Flags.hs - compiler/GHC/Driver/Session.hs - compiler/GHC/Parser/Lexer.x - compiler/GHC/Parser/Lexer/String.x - compiler/GHC/Tc/Errors.hs - compiler/GHC/Tc/Errors/Ppr.hs - compiler/GHC/Tc/Errors/Types.hs - compiler/GHC/Tc/Gen/App.hs - compiler/GHC/Tc/Instance/FunDeps.hs - compiler/GHC/Tc/Solver/Default.hs - compiler/GHC/Tc/Solver/Dict.hs - compiler/GHC/Tc/Solver/Equality.hs - + compiler/GHC/Tc/Solver/FunDeps.hs - compiler/GHC/Tc/Solver/InertSet.hs - compiler/GHC/Tc/Solver/Monad.hs - compiler/GHC/Tc/Solver/Solve.hs - compiler/GHC/Tc/Types/Constraint.hs - compiler/GHC/Tc/Types/Origin.hs - compiler/GHC/Tc/Utils/Instantiate.hs - compiler/GHC/Tc/Utils/Monad.hs - compiler/GHC/Tc/Utils/TcMType.hs - compiler/GHC/Tc/Utils/TcType.hs - compiler/GHC/Tc/Utils/Unify.hs - compiler/GHC/Tc/Zonk/TcType.hs - compiler/GHC/Types/Basic.hs - compiler/ghc.cabal.in - configure.ac - docs/users_guide/debugging.rst - libraries/ghc-internal/src/GHC/Internal/Base.hs - m4/fp_setup_windows_toolchain.m4 - m4/ghc_toolchain.m4 - + testsuite/tests/codeGen/should_compile/T20298a.hs - + testsuite/tests/codeGen/should_compile/T20298a.stderr - + testsuite/tests/codeGen/should_compile/T20298b.hs - + testsuite/tests/codeGen/should_compile/T20298b.stderr - + testsuite/tests/codeGen/should_compile/T20298c.hs - + testsuite/tests/codeGen/should_compile/T20298c.stderr - testsuite/tests/codeGen/should_compile/all.T - testsuite/tests/default/default-fail05.stderr - testsuite/tests/dependent/should_fail/T13135_simple.stderr - testsuite/tests/deriving/should_fail/T3621.stderr - testsuite/tests/indexed-types/should_fail/T14369.stderr - testsuite/tests/indexed-types/should_fail/T1897b.stderr - testsuite/tests/parser/should_fail/RecordDotSyntaxFail10.stderr - testsuite/tests/parser/should_fail/RecordDotSyntaxFail13.stderr - testsuite/tests/parser/should_fail/T20654a.stderr - + testsuite/tests/parser/should_run/T26415.hs - + testsuite/tests/parser/should_run/T26415.stdout - testsuite/tests/parser/should_run/all.T - testsuite/tests/polykinds/T6068.stdout - testsuite/tests/rep-poly/RepPolyRightSection.stderr - testsuite/tests/typecheck/should_compile/T13651.hs - − testsuite/tests/typecheck/should_compile/T13651.stderr - + testsuite/tests/typecheck/should_compile/T14745.hs - testsuite/tests/typecheck/should_compile/all.T - testsuite/tests/typecheck/should_compile/tc126.hs - testsuite/tests/typecheck/should_fail/AmbigFDs.hs - − testsuite/tests/typecheck/should_fail/AmbigFDs.stderr - testsuite/tests/typecheck/should_fail/FD3.stderr - testsuite/tests/typecheck/should_fail/FDsFromGivens2.stderr - testsuite/tests/typecheck/should_fail/T13506.stderr - testsuite/tests/typecheck/should_fail/T16512a.stderr - testsuite/tests/typecheck/should_fail/T18851b.hs - − testsuite/tests/typecheck/should_fail/T18851b.stderr - testsuite/tests/typecheck/should_fail/T18851c.hs - − testsuite/tests/typecheck/should_fail/T18851c.stderr - testsuite/tests/typecheck/should_fail/T19415.stderr - testsuite/tests/typecheck/should_fail/T19415b.stderr - testsuite/tests/typecheck/should_fail/T25325.stderr - testsuite/tests/typecheck/should_fail/T5246.stderr - testsuite/tests/typecheck/should_fail/T5978.stderr - testsuite/tests/typecheck/should_fail/T9612.stderr - testsuite/tests/typecheck/should_fail/all.T - testsuite/tests/typecheck/should_fail/tcfail143.stderr - utils/jsffi/dyld.mjs The diff was not included because it is too large. View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/e61cec2ab4aed4b049d29121d8f7db… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/e61cec2ab4aed4b049d29121d8f7db… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/jeltsch/obtaining-os-handles] Add operations for obtaining operating-system handles
by Wolfgang Jeltsch (＠jeltsch) 26 Sep '25

26 Sep '25

Wolfgang Jeltsch pushed to branch wip/jeltsch/obtaining-os-handles at Glasgow Haskell Compiler / GHC Commits: 3570e1fe by Wolfgang Jeltsch at 2025-09-26T18:34:02+03:00 Add operations for obtaining operating-system handles This resolves #26265. - - - - - 7 changed files: - libraries/base/base.cabal.in - libraries/base/changelog.md - + libraries/base/src/System/IO/OS.hs - testsuite/tests/interface-stability/base-exports.stdout - testsuite/tests/interface-stability/base-exports.stdout-javascript-unknown-ghcjs - testsuite/tests/interface-stability/base-exports.stdout-mingw32 - testsuite/tests/interface-stability/base-exports.stdout-ws-32 Changes: ===================================== libraries/base/base.cabal.in ===================================== @@ -258,6 +258,7 @@ Library , System.Exit , System.IO , System.IO.Error + , System.IO.OS , System.Mem , System.Mem.StableName , System.Posix.Internals ===================================== libraries/base/changelog.md ===================================== @@ -7,6 +7,7 @@ * Modify the implementation of `Data.List.sortOn` to use `(>)` instead of `compare`. ([CLC proposal #332](https://github.com/haskell/core-libraries-committee/issues/332)) * `GHC.Exts.IOPort#` and its related operations have been removed ([CLC #213](https://github.com/haskell/core-libraries-committee/issues/213)) * Fix bug where `naturalAndNot` was incorrectly truncating results ([CLC proposal #350](github.com/haskell/core-libraries-committee/issues/350)) + * Add a new module `System.IO.OS` with operations for obtaining operating-system handles (file descriptors, Windows handles) ([CLC proposal #369](https://github.com/haskell/core-libraries-committee/issues/369)) ## 4.22.0.0 *TBA* * Shipped with GHC 9.14.1 ===================================== libraries/base/src/System/IO/OS.hs ===================================== @@ -0,0 +1,342 @@ +{-# LANGUAGE Safe #-} +{-# LANGUAGE CPP #-} +{-# LANGUAGE RankNTypes #-} + +{-| + This module bridges between Haskell handles and underlying operating-system + features. +-} +module System.IO.OS +( + -- * Obtaining file descriptors and Windows handles + withFileDescriptorReadingBiased, + withFileDescriptorWritingBiased, + withWindowsHandleReadingBiased, + withWindowsHandleWritingBiased, + withFileDescriptorReadingBiasedRaw, + withFileDescriptorWritingBiasedRaw, + withWindowsHandleReadingBiasedRaw, + withWindowsHandleWritingBiasedRaw + + -- ** Caveats + -- $with-ref-caveats +) +where + +import GHC.Internal.Control.Monad (return) +import GHC.Internal.Control.Concurrent.MVar (MVar) +import GHC.Internal.Control.Exception (mask) +import GHC.Internal.Data.Function (const, (.), ($)) +import GHC.Internal.Data.Functor (fmap) +#if defined(mingw32_HOST_OS) +import GHC.Internal.Data.Bool (otherwise) +#endif +import GHC.Internal.Data.Maybe (Maybe (Nothing), maybe) +#if defined(mingw32_HOST_OS) +import GHC.Internal.Data.Maybe (Maybe (Just)) +#endif +import GHC.Internal.Data.List ((++)) +import GHC.Internal.Data.String (String) +import GHC.Internal.Data.Typeable (Typeable, cast) +import GHC.Internal.System.IO (IO) +import GHC.Internal.IO.FD (fdFD) +#if defined(mingw32_HOST_OS) +import GHC.Internal.IO.Windows.Handle + ( + NativeHandle, + ConsoleHandle, + IoHandle, + toHANDLE + ) +#endif +import GHC.Internal.IO.Handle.Types + ( + Handle (FileHandle, DuplexHandle), + Handle__ (Handle__, haDevice) + ) +import GHC.Internal.IO.Handle.Internals (withHandle_', flushBuffer) +import GHC.Internal.IO.Exception + ( + IOErrorType (InappropriateType), + IOException (IOError), + ioException + ) +import GHC.Internal.Foreign.Ptr (Ptr) +import GHC.Internal.Foreign.C.Types (CInt) + +-- * Obtaining POSIX file descriptors and Windows handles + +{-| + Executes a user-provided action on an operating-system handle that underlies + a Haskell handle. Before the user-provided action is run, user-defined + perparation based on the handle state that contains the operating-system + handle is performed. While the user-provided action is executed, further + operations on the Haskell handle are blocked to a degree that interference + with this action is prevented. + + See [below](#with-ref-caveats) for caveats regarding this operation. +-} +withOSHandle :: String + -- ^ The name of the overall operation + -> (Handle -> MVar Handle__) + {-^ + Obtaining of the handle state variable that holds the + operating-system handle + -} + -> (forall d. Typeable d => d -> IO a) + -- ^ Conversion of a device into an operating-system handle + -> (Handle__ -> IO ()) + -- ^ The preparation + -> Handle + -- ^ The Haskell handle to use + -> (a -> IO r) + -- ^ The action to execute on the operating-system handle + -> IO r +withOSHandle opName handleStateVar getOSHandle prepare handle act + = mask $ \ withOriginalMaskingState -> + withHandleState $ \ handleState@Handle__ {haDevice = dev} -> do + osHandle <- getOSHandle dev + prepare handleState + withOriginalMaskingState $ act osHandle + where + + withHandleState = withHandle_' opName handle (handleStateVar handle) +{- + The 'withHandle_'' operation, which we use here, already performs masking. + Still, we have to employ 'mask', in order do obtain the operation that + restores the original masking state. The user-provided action should be + executed with this original masking state, as there is no inherent reason to + generally perform it with masking in place. The masking that 'withHandle_'' + performs is only for safely accessing handle state and thus constitutes an + implementation detail; it has nothing to do with the user-provided action. +-} +{- + The order of actions in 'withOSHandle' is such that any exception from + 'getOSHandle' is thrown before the flushing of the Haskell-managed buffers. +-} + +{-| + Obtains the handle state variable that underlies a handle or specifically + the handle state variable for reading if the handle uses different state + variables for reading and writing. +-} +handleStateVarReadingBiased :: Handle -> MVar Handle__ +handleStateVarReadingBiased (FileHandle _ var) = var +handleStateVarReadingBiased (DuplexHandle _ readingVar _) = readingVar + +{-| + Obtains the handle state variable that underlies a handle or specifically + the handle state variable for writing if the handle uses different state + variables for reading and writing. +-} +handleStateVarWritingBiased :: Handle -> MVar Handle__ +handleStateVarWritingBiased (FileHandle _ var) = var +handleStateVarWritingBiased (DuplexHandle _ _ writingVar) = writingVar + +{-| + Yields the result of another operation if that operation succeeded, and + otherwise throws an exception that signals that the other operation failed + because some Haskell handle does not use an operating-system handle of a + required type. +-} +requiringOSHandleOfType :: String + -- ^ The name of the operating-system handle type + -> Maybe a + {-^ + The result of the other operation if it succeeded + -} + -> IO a +requiringOSHandleOfType osHandleTypeName + = maybe (ioException osHandleOfTypeRequired) return + where + + osHandleOfTypeRequired :: IOException + osHandleOfTypeRequired + = IOError Nothing + InappropriateType + "" + ("handle does not use " ++ osHandleTypeName ++ "s") + Nothing + Nothing + +{-| + Obtains the POSIX file descriptor of a device if the device contains one, + and throws an exception otherwise. +-} +getFileDescriptor :: Typeable d => d -> IO CInt +getFileDescriptor = requiringOSHandleOfType "POSIX file descriptor" . + fmap fdFD . cast + +{-| + Obtains the Windows handle of a device if the device contains one, and + throws an exception otherwise. +-} +getWindowsHandle :: Typeable d => d -> IO (Ptr ()) +getWindowsHandle = requiringOSHandleOfType "Windows handle" . + toMaybeWindowsHandle + where + + toMaybeWindowsHandle :: Typeable d => d -> Maybe (Ptr ()) +#if defined(mingw32_HOST_OS) + toMaybeWindowsHandle dev + | Just nativeHandle <- cast dev :: Maybe (IoHandle NativeHandle) + = Just (toHANDLE nativeHandle) + | Just consoleHandle <- cast dev :: Maybe (IoHandle ConsoleHandle) + = Just (toHANDLE consoleHandle) + | otherwise + = Nothing + {- + This is inspired by the implementation of + 'System.Win32.Types.withHandleToHANDLENative'. + -} +#else + toMaybeWindowsHandle _ = Nothing +#endif + +{-| + Executes a user-provided action on the POSIX file descriptor that underlies + a handle or specifically on the POSIX file descriptor for reading if the + handle uses different file descriptors for reading and writing. The + Haskell-managed buffers related to the file descriptor are flushed before + the user-provided action is run. While this action is executed, further + operations on the handle are blocked to a degree that interference with this + action is prevented. + + If the handle does not use POSIX file descriptors, an exception is thrown. + + See [below](#with-ref-caveats) for caveats regarding this operation. +-} +withFileDescriptorReadingBiased :: Handle -> (CInt -> IO r) -> IO r +withFileDescriptorReadingBiased = withOSHandle "withFileDescriptorReadingBiased" + handleStateVarReadingBiased + getFileDescriptor + flushBuffer + +{-| + Executes a user-provided action on the POSIX file descriptor that underlies + a handle or specifically on the POSIX file descriptor for writing if the + handle uses different file descriptors for reading and writing. The + Haskell-managed buffers related to the file descriptor are flushed before + the user-provided action is run. While this action is executed, further + operations on the handle are blocked to a degree that interference with this + action is prevented. + + If the handle does not use POSIX file descriptors, an exception is thrown. + + See [below](#with-ref-caveats) for caveats regarding this operation. +-} +withFileDescriptorWritingBiased :: Handle -> (CInt -> IO r) -> IO r +withFileDescriptorWritingBiased = withOSHandle "withFileDescriptorWritingBiased" + handleStateVarWritingBiased + getFileDescriptor + flushBuffer + +{-| + Executes a user-provided action on the Windows handle that underlies a + Haskell handle or specifically on the Windows handle for reading if the + Haskell handle uses different Windows handles for reading and writing. The + Haskell-managed buffers related to the Windows handle are flushed before the + user-provided action is run. While this action is executed, further + operations on the Haskell handle are blocked to a degree that interference + with this action is prevented. + + If the Haskell handle does not use Windows handles, an exception is thrown. + + See [below](#with-ref-caveats) for caveats regarding this operation. +-} +withWindowsHandleReadingBiased :: Handle -> (Ptr () -> IO r) -> IO r +withWindowsHandleReadingBiased = withOSHandle "withWindowsHandleReadingBiased" + handleStateVarReadingBiased + getWindowsHandle + flushBuffer + +{-| + Executes a user-provided action on the Windows handle that underlies a + Haskell handle or specifically on the Windows handle for writing if the + Haskell handle uses different Windows handles for reading and writing. The + Haskell-managed buffers related to the Windows handle are flushed before the + user-provided action is run. While this action is executed, further + operations on the Haskell handle are blocked to a degree that interference + with this action is prevented. + + If the Haskell handle does not use Windows handles, an exception is thrown. + + See [below](#with-ref-caveats) for caveats regarding this operation. +-} +withWindowsHandleWritingBiased :: Handle -> (Ptr () -> IO r) -> IO r +withWindowsHandleWritingBiased = withOSHandle "withWindowsHandleWritingBiased" + handleStateVarWritingBiased + getWindowsHandle + flushBuffer + +{-| + Like 'withFileDescriptorReadingBiased' except that Haskell-managed buffers + are not flushed. +-} +withFileDescriptorReadingBiasedRaw :: Handle -> (CInt -> IO r) -> IO r +withFileDescriptorReadingBiasedRaw + = withOSHandle "withFileDescriptorReadingBiasedRaw" + handleStateVarReadingBiased + getFileDescriptor + (const $ return ()) + +{-| + Like 'withFileDescriptorWritingBiased' except that Haskell-managed buffers + are not flushed. +-} +withFileDescriptorWritingBiasedRaw :: Handle -> (CInt -> IO r) -> IO r +withFileDescriptorWritingBiasedRaw + = withOSHandle "withFileDescriptorWritingBiasedRaw" + handleStateVarWritingBiased + getFileDescriptor + (const $ return ()) + +{-| + Like 'withWindowsHandleReadingBiased' except that Haskell-managed buffers + are not flushed. +-} +withWindowsHandleReadingBiasedRaw :: Handle -> (Ptr () -> IO r) -> IO r +withWindowsHandleReadingBiasedRaw + = withOSHandle "withWindowsHandleReadingBiasedRaw" + handleStateVarReadingBiased + getWindowsHandle + (const $ return ()) + +{-| + Like 'withWindowsHandleWritingBiased' except that Haskell-managed buffers + are not flushed. +-} +withWindowsHandleWritingBiasedRaw :: Handle -> (Ptr () -> IO r) -> IO r +withWindowsHandleWritingBiasedRaw + = withOSHandle "withWindowsHandleWritingBiasedRaw" + handleStateVarWritingBiased + getWindowsHandle + (const $ return ()) + +-- ** Caveats + +{-$with-ref-caveats + #with-ref-caveats#There are the following caveats regarding the above + operations: + + * Flushing of buffers can fail if the given handle is readable but not + seekable. + + * If one of these operations is performed as part of an action executed by + 'System.IO.Unsafe.unsafePerformIO', + 'System.IO.Unsafe.unsafeInterleaveIO', or one of their “dupable” + variants and the user-provided action receives an asychnchronous + exception and does not catch it, then the following happens: + + - Before the overall computation is suspended, the blocking of handle + operations is removed. + + - When the computation is later resumed due to another evaluation + attempt, the blocking of handle operations is reinstantiated, the + Haskell-managed buffers are flushed again, and the user-provided + action is run from the beginning. + + Repeating the previously executed part of the user-provided action + cannot be avoided apparently. See the @[async]@ note in the source code + of "GHC.Internal.IO.Handle.Internals" for further explanation. +-} ===================================== testsuite/tests/interface-stability/base-exports.stdout ===================================== @@ -10373,6 +10373,17 @@ module System.IO.Error where userError :: GHC.Internal.Base.String -> IOError userErrorType :: IOErrorType +module System.IO.OS where + -- Safety: Safe + withFileDescriptorReadingBiased :: forall r. GHC.Internal.IO.Handle.Types.Handle -> (GHC.Internal.Foreign.C.Types.CInt -> GHC.Internal.Types.IO r) -> GHC.Internal.Types.IO r + withFileDescriptorReadingBiasedRaw :: forall r. GHC.Internal.IO.Handle.Types.Handle -> (GHC.Internal.Foreign.C.Types.CInt -> GHC.Internal.Types.IO r) -> GHC.Internal.Types.IO r + withFileDescriptorWritingBiased :: forall r. GHC.Internal.IO.Handle.Types.Handle -> (GHC.Internal.Foreign.C.Types.CInt -> GHC.Internal.Types.IO r) -> GHC.Internal.Types.IO r + withFileDescriptorWritingBiasedRaw :: forall r. GHC.Internal.IO.Handle.Types.Handle -> (GHC.Internal.Foreign.C.Types.CInt -> GHC.Internal.Types.IO r) -> GHC.Internal.Types.IO r + withWindowsHandleReadingBiased :: forall r. GHC.Internal.IO.Handle.Types.Handle -> (GHC.Internal.Ptr.Ptr () -> GHC.Internal.Types.IO r) -> GHC.Internal.Types.IO r + withWindowsHandleReadingBiasedRaw :: forall r. GHC.Internal.IO.Handle.Types.Handle -> (GHC.Internal.Ptr.Ptr () -> GHC.Internal.Types.IO r) -> GHC.Internal.Types.IO r + withWindowsHandleWritingBiased :: forall r. GHC.Internal.IO.Handle.Types.Handle -> (GHC.Internal.Ptr.Ptr () -> GHC.Internal.Types.IO r) -> GHC.Internal.Types.IO r + withWindowsHandleWritingBiasedRaw :: forall r. GHC.Internal.IO.Handle.Types.Handle -> (GHC.Internal.Ptr.Ptr () -> GHC.Internal.Types.IO r) -> GHC.Internal.Types.IO r + module System.IO.Unsafe where -- Safety: Unsafe unsafeDupablePerformIO :: forall a. GHC.Internal.Types.IO a -> a ===================================== testsuite/tests/interface-stability/base-exports.stdout-javascript-unknown-ghcjs ===================================== @@ -13419,6 +13419,17 @@ module System.IO.Error where userError :: GHC.Internal.Base.String -> IOError userErrorType :: IOErrorType +module System.IO.OS where + -- Safety: Safe + withFileDescriptorReadingBiased :: forall r. GHC.Internal.IO.Handle.Types.Handle -> (GHC.Internal.Foreign.C.Types.CInt -> GHC.Internal.Types.IO r) -> GHC.Internal.Types.IO r + withFileDescriptorReadingBiasedRaw :: forall r. GHC.Internal.IO.Handle.Types.Handle -> (GHC.Internal.Foreign.C.Types.CInt -> GHC.Internal.Types.IO r) -> GHC.Internal.Types.IO r + withFileDescriptorWritingBiased :: forall r. GHC.Internal.IO.Handle.Types.Handle -> (GHC.Internal.Foreign.C.Types.CInt -> GHC.Internal.Types.IO r) -> GHC.Internal.Types.IO r + withFileDescriptorWritingBiasedRaw :: forall r. GHC.Internal.IO.Handle.Types.Handle -> (GHC.Internal.Foreign.C.Types.CInt -> GHC.Internal.Types.IO r) -> GHC.Internal.Types.IO r + withWindowsHandleReadingBiased :: forall r. GHC.Internal.IO.Handle.Types.Handle -> (GHC.Internal.Ptr.Ptr () -> GHC.Internal.Types.IO r) -> GHC.Internal.Types.IO r + withWindowsHandleReadingBiasedRaw :: forall r. GHC.Internal.IO.Handle.Types.Handle -> (GHC.Internal.Ptr.Ptr () -> GHC.Internal.Types.IO r) -> GHC.Internal.Types.IO r + withWindowsHandleWritingBiased :: forall r. GHC.Internal.IO.Handle.Types.Handle -> (GHC.Internal.Ptr.Ptr () -> GHC.Internal.Types.IO r) -> GHC.Internal.Types.IO r + withWindowsHandleWritingBiasedRaw :: forall r. GHC.Internal.IO.Handle.Types.Handle -> (GHC.Internal.Ptr.Ptr () -> GHC.Internal.Types.IO r) -> GHC.Internal.Types.IO r + module System.IO.Unsafe where -- Safety: Unsafe unsafeDupablePerformIO :: forall a. GHC.Internal.Types.IO a -> a ===================================== testsuite/tests/interface-stability/base-exports.stdout-mingw32 ===================================== @@ -10653,6 +10653,17 @@ module System.IO.Error where userError :: GHC.Internal.Base.String -> IOError userErrorType :: IOErrorType +module System.IO.OS where + -- Safety: Safe + withFileDescriptorReadingBiased :: forall r. GHC.Internal.IO.Handle.Types.Handle -> (GHC.Internal.Foreign.C.Types.CInt -> GHC.Internal.Types.IO r) -> GHC.Internal.Types.IO r + withFileDescriptorReadingBiasedRaw :: forall r. GHC.Internal.IO.Handle.Types.Handle -> (GHC.Internal.Foreign.C.Types.CInt -> GHC.Internal.Types.IO r) -> GHC.Internal.Types.IO r + withFileDescriptorWritingBiased :: forall r. GHC.Internal.IO.Handle.Types.Handle -> (GHC.Internal.Foreign.C.Types.CInt -> GHC.Internal.Types.IO r) -> GHC.Internal.Types.IO r + withFileDescriptorWritingBiasedRaw :: forall r. GHC.Internal.IO.Handle.Types.Handle -> (GHC.Internal.Foreign.C.Types.CInt -> GHC.Internal.Types.IO r) -> GHC.Internal.Types.IO r + withWindowsHandleReadingBiased :: forall r. GHC.Internal.IO.Handle.Types.Handle -> (GHC.Internal.Ptr.Ptr () -> GHC.Internal.Types.IO r) -> GHC.Internal.Types.IO r + withWindowsHandleReadingBiasedRaw :: forall r. GHC.Internal.IO.Handle.Types.Handle -> (GHC.Internal.Ptr.Ptr () -> GHC.Internal.Types.IO r) -> GHC.Internal.Types.IO r + withWindowsHandleWritingBiased :: forall r. GHC.Internal.IO.Handle.Types.Handle -> (GHC.Internal.Ptr.Ptr () -> GHC.Internal.Types.IO r) -> GHC.Internal.Types.IO r + withWindowsHandleWritingBiasedRaw :: forall r. GHC.Internal.IO.Handle.Types.Handle -> (GHC.Internal.Ptr.Ptr () -> GHC.Internal.Types.IO r) -> GHC.Internal.Types.IO r + module System.IO.Unsafe where -- Safety: Unsafe unsafeDupablePerformIO :: forall a. GHC.Internal.Types.IO a -> a ===================================== testsuite/tests/interface-stability/base-exports.stdout-ws-32 ===================================== @@ -10373,6 +10373,17 @@ module System.IO.Error where userError :: GHC.Internal.Base.String -> IOError userErrorType :: IOErrorType +module System.IO.OS where + -- Safety: Safe + withFileDescriptorReadingBiased :: forall r. GHC.Internal.IO.Handle.Types.Handle -> (GHC.Internal.Foreign.C.Types.CInt -> GHC.Internal.Types.IO r) -> GHC.Internal.Types.IO r + withFileDescriptorReadingBiasedRaw :: forall r. GHC.Internal.IO.Handle.Types.Handle -> (GHC.Internal.Foreign.C.Types.CInt -> GHC.Internal.Types.IO r) -> GHC.Internal.Types.IO r + withFileDescriptorWritingBiased :: forall r. GHC.Internal.IO.Handle.Types.Handle -> (GHC.Internal.Foreign.C.Types.CInt -> GHC.Internal.Types.IO r) -> GHC.Internal.Types.IO r + withFileDescriptorWritingBiasedRaw :: forall r. GHC.Internal.IO.Handle.Types.Handle -> (GHC.Internal.Foreign.C.Types.CInt -> GHC.Internal.Types.IO r) -> GHC.Internal.Types.IO r + withWindowsHandleReadingBiased :: forall r. GHC.Internal.IO.Handle.Types.Handle -> (GHC.Internal.Ptr.Ptr () -> GHC.Internal.Types.IO r) -> GHC.Internal.Types.IO r + withWindowsHandleReadingBiasedRaw :: forall r. GHC.Internal.IO.Handle.Types.Handle -> (GHC.Internal.Ptr.Ptr () -> GHC.Internal.Types.IO r) -> GHC.Internal.Types.IO r + withWindowsHandleWritingBiased :: forall r. GHC.Internal.IO.Handle.Types.Handle -> (GHC.Internal.Ptr.Ptr () -> GHC.Internal.Types.IO r) -> GHC.Internal.Types.IO r + withWindowsHandleWritingBiasedRaw :: forall r. GHC.Internal.IO.Handle.Types.Handle -> (GHC.Internal.Ptr.Ptr () -> GHC.Internal.Types.IO r) -> GHC.Internal.Types.IO r + module System.IO.Unsafe where -- Safety: Unsafe unsafeDupablePerformIO :: forall a. GHC.Internal.Types.IO a -> a View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/3570e1fe238ed6c77255b9042d108e9… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/3570e1fe238ed6c77255b9042d108e9… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/jeltsch/obtaining-os-handles] Add operations for obtaining POSIX FDs and Windows handles
by Wolfgang Jeltsch (＠jeltsch) 26 Sep '25

26 Sep '25

Wolfgang Jeltsch pushed to branch wip/jeltsch/obtaining-os-handles at Glasgow Haskell Compiler / GHC Commits: b6cf929d by Wolfgang Jeltsch at 2025-09-26T18:31:40+03:00 Add operations for obtaining POSIX FDs and Windows handles This resolves #26265. - - - - - 7 changed files: - libraries/base/base.cabal.in - libraries/base/changelog.md - + libraries/base/src/System/IO/OS.hs - testsuite/tests/interface-stability/base-exports.stdout - testsuite/tests/interface-stability/base-exports.stdout-javascript-unknown-ghcjs - testsuite/tests/interface-stability/base-exports.stdout-mingw32 - testsuite/tests/interface-stability/base-exports.stdout-ws-32 Changes: ===================================== libraries/base/base.cabal.in ===================================== @@ -258,6 +258,7 @@ Library , System.Exit , System.IO , System.IO.Error + , System.IO.OS , System.Mem , System.Mem.StableName , System.Posix.Internals ===================================== libraries/base/changelog.md ===================================== @@ -7,6 +7,7 @@ * Modify the implementation of `Data.List.sortOn` to use `(>)` instead of `compare`. ([CLC proposal #332](https://github.com/haskell/core-libraries-committee/issues/332)) * `GHC.Exts.IOPort#` and its related operations have been removed ([CLC #213](https://github.com/haskell/core-libraries-committee/issues/213)) * Fix bug where `naturalAndNot` was incorrectly truncating results ([CLC proposal #350](github.com/haskell/core-libraries-committee/issues/350)) + * Add a new module `System.IO.OS` with operations for obtaining operating-system handles (file descriptors, Windows handles) ([CLC proposal #369](https://github.com/haskell/core-libraries-committee/issues/369)) ## 4.22.0.0 *TBA* * Shipped with GHC 9.14.1 ===================================== libraries/base/src/System/IO/OS.hs ===================================== @@ -0,0 +1,342 @@ +{-# LANGUAGE Safe #-} +{-# LANGUAGE CPP #-} +{-# LANGUAGE RankNTypes #-} + +{-| + This module bridges between Haskell handles and underlying operating-system + features. +-} +module System.IO.OS +( + -- * Obtaining file descriptors and Windows handles + withFileDescriptorReadingBiased, + withFileDescriptorWritingBiased, + withWindowsHandleReadingBiased, + withWindowsHandleWritingBiased, + withFileDescriptorReadingBiasedRaw, + withFileDescriptorWritingBiasedRaw, + withWindowsHandleReadingBiasedRaw, + withWindowsHandleWritingBiasedRaw + + -- ** Caveats + -- $with-ref-caveats +) +where + +import GHC.Internal.Control.Monad (return) +import GHC.Internal.Control.Concurrent.MVar (MVar) +import GHC.Internal.Control.Exception (mask) +import GHC.Internal.Data.Function (const, (.), ($)) +import GHC.Internal.Data.Functor (fmap) +#if defined(mingw32_HOST_OS) +import GHC.Internal.Data.Bool (otherwise) +#endif +import GHC.Internal.Data.Maybe (Maybe (Nothing), maybe) +#if defined(mingw32_HOST_OS) +import GHC.Internal.Data.Maybe (Maybe (Just)) +#endif +import GHC.Internal.Data.List ((++)) +import GHC.Internal.Data.String (String) +import GHC.Internal.Data.Typeable (Typeable, cast) +import GHC.Internal.System.IO (IO) +import GHC.Internal.IO.FD (fdFD) +#if defined(mingw32_HOST_OS) +import GHC.Internal.IO.Windows.Handle + ( + NativeHandle, + ConsoleHandle, + IoHandle, + toHANDLE + ) +#endif +import GHC.Internal.IO.Handle.Types + ( + Handle (FileHandle, DuplexHandle), + Handle__ (Handle__, haDevice) + ) +import GHC.Internal.IO.Handle.Internals (withHandle_', flushBuffer) +import GHC.Internal.IO.Exception + ( + IOErrorType (InappropriateType), + IOException (IOError), + ioException + ) +import GHC.Internal.Foreign.Ptr (Ptr) +import GHC.Internal.Foreign.C.Types (CInt) + +-- * Obtaining POSIX file descriptors and Windows handles + +{-| + Executes a user-provided action on an operating-system handle that underlies + a Haskell handle. Before the user-provided action is run, user-defined + perparation based on the handle state that contains the operating-system + handle is performed. While the user-provided action is executed, further + operations on the Haskell handle are blocked to a degree that interference + with this action is prevented. + + See [below](#with-ref-caveats) for caveats regarding this operation. +-} +withOSHandle :: String + -- ^ The name of the overall operation + -> (Handle -> MVar Handle__) + {-^ + Obtaining of the handle state variable that holds the + operating-system handle + -} + -> (forall d. Typeable d => d -> IO a) + -- ^ Conversion of a device into an operating-system handle + -> (Handle__ -> IO ()) + -- ^ The preparation + -> Handle + -- ^ The Haskell handle to use + -> (a -> IO r) + -- ^ The action to execute on the operating-system handle + -> IO r +withOSHandle opName handleStateVar getOSHandle prepare handle act + = mask $ \ withOriginalMaskingState -> + withHandleState $ \ handleState@Handle__ {haDevice = dev} -> do + osHandle <- getOSHandle dev + prepare handleState + withOriginalMaskingState $ act osHandle + where + + withHandleState = withHandle_' opName handle (handleStateVar handle) +{- + The 'withHandle_'' operation, which we use here, already performs masking. + Still, we have to employ 'mask', in order do obtain the operation that + restores the original masking state. The user-provided action should be + executed with this original masking state, as there is no inherent reason to + generally perform it with masking in place. The masking that 'withHandle_'' + performs is only for safely accessing handle state and thus constitutes an + implementation detail; it has nothing to do with the user-provided action. +-} +{- + The order of actions in 'withOSHandle' is such that any exception from + 'getOSHandle' is thrown before the flushing of the Haskell-managed buffers. +-} + +{-| + Obtains the handle state variable that underlies a handle or specifically + the handle state variable for reading if the handle uses different state + variables for reading and writing. +-} +handleStateVarReadingBiased :: Handle -> MVar Handle__ +handleStateVarReadingBiased (FileHandle _ var) = var +handleStateVarReadingBiased (DuplexHandle _ readingVar _) = readingVar + +{-| + Obtains the handle state variable that underlies a handle or specifically + the handle state variable for writing if the handle uses different state + variables for reading and writing. +-} +handleStateVarWritingBiased :: Handle -> MVar Handle__ +handleStateVarWritingBiased (FileHandle _ var) = var +handleStateVarWritingBiased (DuplexHandle _ _ writingVar) = writingVar + +{-| + Yields the result of another operation if that operation succeeded, and + otherwise throws an exception that signals that the other operation failed + because some Haskell handle does not use an operating-system handle of a + required type. +-} +requiringOSHandleOfType :: String + -- ^ The name of the operating-system handle type + -> Maybe a + {-^ + The result of the other operation if it succeeded + -} + -> IO a +requiringOSHandleOfType osHandleTypeName + = maybe (ioException osHandleOfTypeRequired) return + where + + osHandleOfTypeRequired :: IOException + osHandleOfTypeRequired + = IOError Nothing + InappropriateType + "" + ("handle does not use " ++ osHandleTypeName ++ "s") + Nothing + Nothing + +{-| + Obtains the POSIX file descriptor of a device if the device contains one, + and throws an exception otherwise. +-} +getFileDescriptor :: Typeable d => d -> IO CInt +getFileDescriptor = requiringOSHandleOfType "POSIX file descriptor" . + fmap fdFD . cast + +{-| + Obtains the Windows handle of a device if the device contains one, and + throws an exception otherwise. +-} +getWindowsHandle :: Typeable d => d -> IO (Ptr ()) +getWindowsHandle = requiringOSHandleOfType "Windows handle" . + toMaybeWindowsHandle + where + + toMaybeWindowsHandle :: Typeable d => d -> Maybe (Ptr ()) +#if defined(mingw32_HOST_OS) + toMaybeWindowsHandle dev + | Just nativeHandle <- cast dev :: Maybe (IoHandle NativeHandle) + = Just (toHANDLE nativeHandle) + | Just consoleHandle <- cast dev :: Maybe (IoHandle ConsoleHandle) + = Just (toHANDLE consoleHandle) + | otherwise + = Nothing + {- + This is inspired by the implementation of + 'System.Win32.Types.withHandleToHANDLENative'. + -} +#else + toMaybeWindowsHandle _ = Nothing +#endif + +{-| + Executes a user-provided action on the POSIX file descriptor that underlies + a handle or specifically on the POSIX file descriptor for reading if the + handle uses different file descriptors for reading and writing. The + Haskell-managed buffers related to the file descriptor are flushed before + the user-provided action is run. While this action is executed, further + operations on the handle are blocked to a degree that interference with this + action is prevented. + + If the handle does not use POSIX file descriptors, an exception is thrown. + + See [below](#with-ref-caveats) for caveats regarding this operation. +-} +withFileDescriptorReadingBiased :: Handle -> (CInt -> IO r) -> IO r +withFileDescriptorReadingBiased = withOSHandle "withFileDescriptorReadingBiased" + handleStateVarReadingBiased + getFileDescriptor + flushBuffer + +{-| + Executes a user-provided action on the POSIX file descriptor that underlies + a handle or specifically on the POSIX file descriptor for writing if the + handle uses different file descriptors for reading and writing. The + Haskell-managed buffers related to the file descriptor are flushed before + the user-provided action is run. While this action is executed, further + operations on the handle are blocked to a degree that interference with this + action is prevented. + + If the handle does not use POSIX file descriptors, an exception is thrown. + + See [below](#with-ref-caveats) for caveats regarding this operation. +-} +withFileDescriptorWritingBiased :: Handle -> (CInt -> IO r) -> IO r +withFileDescriptorWritingBiased = withOSHandle "withFileDescriptorWritingBiased" + handleStateVarWritingBiased + getFileDescriptor + flushBuffer + +{-| + Executes a user-provided action on the Windows handle that underlies a + Haskell handle or specifically on the Windows handle for reading if the + Haskell handle uses different Windows handles for reading and writing. The + Haskell-managed buffers related to the Windows handle are flushed before the + user-provided action is run. While this action is executed, further + operations on the Haskell handle are blocked to a degree that interference + with this action is prevented. + + If the Haskell handle does not use Windows handles, an exception is thrown. + + See [below](#with-ref-caveats) for caveats regarding this operation. +-} +withWindowsHandleReadingBiased :: Handle -> (Ptr () -> IO r) -> IO r +withWindowsHandleReadingBiased = withOSHandle "withWindowsHandleReadingBiased" + handleStateVarReadingBiased + getWindowsHandle + flushBuffer + +{-| + Executes a user-provided action on the Windows handle that underlies a + Haskell handle or specifically on the Windows handle for writing if the + Haskell handle uses different Windows handles for reading and writing. The + Haskell-managed buffers related to the Windows handle are flushed before the + user-provided action is run. While this action is executed, further + operations on the Haskell handle are blocked to a degree that interference + with this action is prevented. + + If the Haskell handle does not use Windows handles, an exception is thrown. + + See [below](#with-ref-caveats) for caveats regarding this operation. +-} +withWindowsHandleWritingBiased :: Handle -> (Ptr () -> IO r) -> IO r +withWindowsHandleWritingBiased = withOSHandle "withWindowsHandleWritingBiased" + handleStateVarWritingBiased + getWindowsHandle + flushBuffer + +{-| + Like 'withFileDescriptorReadingBiased' except that Haskell-managed buffers + are not flushed. +-} +withFileDescriptorReadingBiasedRaw :: Handle -> (CInt -> IO r) -> IO r +withFileDescriptorReadingBiasedRaw + = withOSHandle "withFileDescriptorReadingBiasedRaw" + handleStateVarReadingBiased + getFileDescriptor + (const $ return ()) + +{-| + Like 'withFileDescriptorWritingBiased' except that Haskell-managed buffers + are not flushed. +-} +withFileDescriptorWritingBiasedRaw :: Handle -> (CInt -> IO r) -> IO r +withFileDescriptorWritingBiasedRaw + = withOSHandle "withFileDescriptorWritingBiasedRaw" + handleStateVarWritingBiased + getFileDescriptor + (const $ return ()) + +{-| + Like 'withWindowsHandleReadingBiased' except that Haskell-managed buffers + are not flushed. +-} +withWindowsHandleReadingBiasedRaw :: Handle -> (Ptr () -> IO r) -> IO r +withWindowsHandleReadingBiasedRaw + = withOSHandle "withWindowsHandleReadingBiasedRaw" + handleStateVarReadingBiased + getWindowsHandle + (const $ return ()) + +{-| + Like 'withWindowsHandleWritingBiased' except that Haskell-managed buffers + are not flushed. +-} +withWindowsHandleWritingBiasedRaw :: Handle -> (Ptr () -> IO r) -> IO r +withWindowsHandleWritingBiasedRaw + = withOSHandle "withWindowsHandleWritingBiasedRaw" + handleStateVarWritingBiased + getWindowsHandle + (const $ return ()) + +-- ** Caveats + +{-$with-ref-caveats + #with-ref-caveats#There are the following caveats regarding the above + operations: + + * Flushing of buffers can fail if the given handle is readable but not + seekable. + + * If one of these operations is performed as part of an action executed by + 'System.IO.Unsafe.unsafePerformIO', + 'System.IO.Unsafe.unsafeInterleaveIO', or one of their “dupable” + variants and the user-provided action receives an asychnchronous + exception and does not catch it, then the following happens: + + - Before the overall computation is suspended, the blocking of handle + operations is removed. + + - When the computation is later resumed due to another evaluation + attempt, the blocking of handle operations is reinstantiated, the + Haskell-managed buffers are flushed again, and the user-provided + action is run from the beginning. + + Repeating the previously executed part of the user-provided action + cannot be avoided apparently. See the @[async]@ note in the source code + of "GHC.Internal.IO.Handle.Internals" for further explanation. +-} ===================================== testsuite/tests/interface-stability/base-exports.stdout ===================================== @@ -10373,6 +10373,17 @@ module System.IO.Error where userError :: GHC.Internal.Base.String -> IOError userErrorType :: IOErrorType +module System.IO.OS where + -- Safety: Safe + withFileDescriptorReadingBiased :: forall r. GHC.Internal.IO.Handle.Types.Handle -> (GHC.Internal.Foreign.C.Types.CInt -> GHC.Internal.Types.IO r) -> GHC.Internal.Types.IO r + withFileDescriptorReadingBiasedRaw :: forall r. GHC.Internal.IO.Handle.Types.Handle -> (GHC.Internal.Foreign.C.Types.CInt -> GHC.Internal.Types.IO r) -> GHC.Internal.Types.IO r + withFileDescriptorWritingBiased :: forall r. GHC.Internal.IO.Handle.Types.Handle -> (GHC.Internal.Foreign.C.Types.CInt -> GHC.Internal.Types.IO r) -> GHC.Internal.Types.IO r + withFileDescriptorWritingBiasedRaw :: forall r. GHC.Internal.IO.Handle.Types.Handle -> (GHC.Internal.Foreign.C.Types.CInt -> GHC.Internal.Types.IO r) -> GHC.Internal.Types.IO r + withWindowsHandleReadingBiased :: forall r. GHC.Internal.IO.Handle.Types.Handle -> (GHC.Internal.Ptr.Ptr () -> GHC.Internal.Types.IO r) -> GHC.Internal.Types.IO r + withWindowsHandleReadingBiasedRaw :: forall r. GHC.Internal.IO.Handle.Types.Handle -> (GHC.Internal.Ptr.Ptr () -> GHC.Internal.Types.IO r) -> GHC.Internal.Types.IO r + withWindowsHandleWritingBiased :: forall r. GHC.Internal.IO.Handle.Types.Handle -> (GHC.Internal.Ptr.Ptr () -> GHC.Internal.Types.IO r) -> GHC.Internal.Types.IO r + withWindowsHandleWritingBiasedRaw :: forall r. GHC.Internal.IO.Handle.Types.Handle -> (GHC.Internal.Ptr.Ptr () -> GHC.Internal.Types.IO r) -> GHC.Internal.Types.IO r + module System.IO.Unsafe where -- Safety: Unsafe unsafeDupablePerformIO :: forall a. GHC.Internal.Types.IO a -> a ===================================== testsuite/tests/interface-stability/base-exports.stdout-javascript-unknown-ghcjs ===================================== @@ -13419,6 +13419,17 @@ module System.IO.Error where userError :: GHC.Internal.Base.String -> IOError userErrorType :: IOErrorType +module System.IO.OS where + -- Safety: Safe + withFileDescriptorReadingBiased :: forall r. GHC.Internal.IO.Handle.Types.Handle -> (GHC.Internal.Foreign.C.Types.CInt -> GHC.Internal.Types.IO r) -> GHC.Internal.Types.IO r + withFileDescriptorReadingBiasedRaw :: forall r. GHC.Internal.IO.Handle.Types.Handle -> (GHC.Internal.Foreign.C.Types.CInt -> GHC.Internal.Types.IO r) -> GHC.Internal.Types.IO r + withFileDescriptorWritingBiased :: forall r. GHC.Internal.IO.Handle.Types.Handle -> (GHC.Internal.Foreign.C.Types.CInt -> GHC.Internal.Types.IO r) -> GHC.Internal.Types.IO r + withFileDescriptorWritingBiasedRaw :: forall r. GHC.Internal.IO.Handle.Types.Handle -> (GHC.Internal.Foreign.C.Types.CInt -> GHC.Internal.Types.IO r) -> GHC.Internal.Types.IO r + withWindowsHandleReadingBiased :: forall r. GHC.Internal.IO.Handle.Types.Handle -> (GHC.Internal.Ptr.Ptr () -> GHC.Internal.Types.IO r) -> GHC.Internal.Types.IO r + withWindowsHandleReadingBiasedRaw :: forall r. GHC.Internal.IO.Handle.Types.Handle -> (GHC.Internal.Ptr.Ptr () -> GHC.Internal.Types.IO r) -> GHC.Internal.Types.IO r + withWindowsHandleWritingBiased :: forall r. GHC.Internal.IO.Handle.Types.Handle -> (GHC.Internal.Ptr.Ptr () -> GHC.Internal.Types.IO r) -> GHC.Internal.Types.IO r + withWindowsHandleWritingBiasedRaw :: forall r. GHC.Internal.IO.Handle.Types.Handle -> (GHC.Internal.Ptr.Ptr () -> GHC.Internal.Types.IO r) -> GHC.Internal.Types.IO r + module System.IO.Unsafe where -- Safety: Unsafe unsafeDupablePerformIO :: forall a. GHC.Internal.Types.IO a -> a ===================================== testsuite/tests/interface-stability/base-exports.stdout-mingw32 ===================================== @@ -10653,6 +10653,17 @@ module System.IO.Error where userError :: GHC.Internal.Base.String -> IOError userErrorType :: IOErrorType +module System.IO.OS where + -- Safety: Safe + withFileDescriptorReadingBiased :: forall r. GHC.Internal.IO.Handle.Types.Handle -> (GHC.Internal.Foreign.C.Types.CInt -> GHC.Internal.Types.IO r) -> GHC.Internal.Types.IO r + withFileDescriptorReadingBiasedRaw :: forall r. GHC.Internal.IO.Handle.Types.Handle -> (GHC.Internal.Foreign.C.Types.CInt -> GHC.Internal.Types.IO r) -> GHC.Internal.Types.IO r + withFileDescriptorWritingBiased :: forall r. GHC.Internal.IO.Handle.Types.Handle -> (GHC.Internal.Foreign.C.Types.CInt -> GHC.Internal.Types.IO r) -> GHC.Internal.Types.IO r + withFileDescriptorWritingBiasedRaw :: forall r. GHC.Internal.IO.Handle.Types.Handle -> (GHC.Internal.Foreign.C.Types.CInt -> GHC.Internal.Types.IO r) -> GHC.Internal.Types.IO r + withWindowsHandleReadingBiased :: forall r. GHC.Internal.IO.Handle.Types.Handle -> (GHC.Internal.Ptr.Ptr () -> GHC.Internal.Types.IO r) -> GHC.Internal.Types.IO r + withWindowsHandleReadingBiasedRaw :: forall r. GHC.Internal.IO.Handle.Types.Handle -> (GHC.Internal.Ptr.Ptr () -> GHC.Internal.Types.IO r) -> GHC.Internal.Types.IO r + withWindowsHandleWritingBiased :: forall r. GHC.Internal.IO.Handle.Types.Handle -> (GHC.Internal.Ptr.Ptr () -> GHC.Internal.Types.IO r) -> GHC.Internal.Types.IO r + withWindowsHandleWritingBiasedRaw :: forall r. GHC.Internal.IO.Handle.Types.Handle -> (GHC.Internal.Ptr.Ptr () -> GHC.Internal.Types.IO r) -> GHC.Internal.Types.IO r + module System.IO.Unsafe where -- Safety: Unsafe unsafeDupablePerformIO :: forall a. GHC.Internal.Types.IO a -> a ===================================== testsuite/tests/interface-stability/base-exports.stdout-ws-32 ===================================== @@ -10373,6 +10373,17 @@ module System.IO.Error where userError :: GHC.Internal.Base.String -> IOError userErrorType :: IOErrorType +module System.IO.OS where + -- Safety: Safe + withFileDescriptorReadingBiased :: forall r. GHC.Internal.IO.Handle.Types.Handle -> (GHC.Internal.Foreign.C.Types.CInt -> GHC.Internal.Types.IO r) -> GHC.Internal.Types.IO r + withFileDescriptorReadingBiasedRaw :: forall r. GHC.Internal.IO.Handle.Types.Handle -> (GHC.Internal.Foreign.C.Types.CInt -> GHC.Internal.Types.IO r) -> GHC.Internal.Types.IO r + withFileDescriptorWritingBiased :: forall r. GHC.Internal.IO.Handle.Types.Handle -> (GHC.Internal.Foreign.C.Types.CInt -> GHC.Internal.Types.IO r) -> GHC.Internal.Types.IO r + withFileDescriptorWritingBiasedRaw :: forall r. GHC.Internal.IO.Handle.Types.Handle -> (GHC.Internal.Foreign.C.Types.CInt -> GHC.Internal.Types.IO r) -> GHC.Internal.Types.IO r + withWindowsHandleReadingBiased :: forall r. GHC.Internal.IO.Handle.Types.Handle -> (GHC.Internal.Ptr.Ptr () -> GHC.Internal.Types.IO r) -> GHC.Internal.Types.IO r + withWindowsHandleReadingBiasedRaw :: forall r. GHC.Internal.IO.Handle.Types.Handle -> (GHC.Internal.Ptr.Ptr () -> GHC.Internal.Types.IO r) -> GHC.Internal.Types.IO r + withWindowsHandleWritingBiased :: forall r. GHC.Internal.IO.Handle.Types.Handle -> (GHC.Internal.Ptr.Ptr () -> GHC.Internal.Types.IO r) -> GHC.Internal.Types.IO r + withWindowsHandleWritingBiasedRaw :: forall r. GHC.Internal.IO.Handle.Types.Handle -> (GHC.Internal.Ptr.Ptr () -> GHC.Internal.Types.IO r) -> GHC.Internal.Types.IO r + module System.IO.Unsafe where -- Safety: Unsafe unsafeDupablePerformIO :: forall a. GHC.Internal.Types.IO a -> a View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/b6cf929dc407fca93110d2dfd652841… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/b6cf929dc407fca93110d2dfd652841… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc] Deleted branch wip/supersven/test-master-full-ci
by Cheng Shao (＠TerrorJack) 26 Sep '25

26 Sep '25

Cheng Shao deleted branch wip/supersven/test-master-full-ci at Glasgow Haskell Compiler / GHC -- You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/jeltsch/obtaining-os-handles] Add changelog entry
by Wolfgang Jeltsch (＠jeltsch) 26 Sep '25

26 Sep '25

Wolfgang Jeltsch pushed to branch wip/jeltsch/obtaining-os-handles at Glasgow Haskell Compiler / GHC Commits: 1b9f906f by Wolfgang Jeltsch at 2025-09-26T18:16:08+03:00 Add changelog entry - - - - - 1 changed file: - libraries/base/changelog.md Changes: ===================================== libraries/base/changelog.md ===================================== @@ -7,6 +7,7 @@ * Modify the implementation of `Data.List.sortOn` to use `(>)` instead of `compare`. ([CLC proposal #332](https://github.com/haskell/core-libraries-committee/issues/332)) * `GHC.Exts.IOPort#` and its related operations have been removed ([CLC #213](https://github.com/haskell/core-libraries-committee/issues/213)) * Fix bug where `naturalAndNot` was incorrectly truncating results ([CLC proposal #350](github.com/haskell/core-libraries-committee/issues/350)) + * Add a new module `System.IO.OS` with operations for obtaining operating-system handles (file descriptors, Windows handles) ([CLC proposal #369](https://github.com/haskell/core-libraries-committee/issues/369)) ## 4.22.0.0 *TBA* * Shipped with GHC 9.14.1 View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/1b9f906ff35e45f6fdf8dd25ed98d46… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/1b9f906ff35e45f6fdf8dd25ed98d46… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/marge_bot_batch_merge_job] 9 commits: Revert "Add necessary flag for js linking"
by Marge Bot (＠marge-bot) 26 Sep '25

26 Sep '25

Marge Bot pushed to branch wip/marge_bot_batch_merge_job at Glasgow Haskell Compiler / GHC Commits: c1cab0c3 by Sylvain Henry at 2025-09-26T10:36:30-04:00 Revert "Add necessary flag for js linking" This reverts commit 84f68e2231b2eddb2e1dc4e90af394ef0f2e803f. This commit didn't have the expected effect. See discussion in #26290. Instead we export HEAP8 and HEAPU8 from rts/js/mem.js - - - - - 0a434a80 by Sylvain Henry at 2025-09-26T10:36:30-04:00 JS: export HEAPU8 (#26290) This is now required by newer Emscripten versions. - - - - - b10296a9 by Andreas Klebinger at 2025-09-26T10:37:11-04:00 sizeExpr: Improve Tick handling. When determining if we scrutinize a function argument we now properly look through ticks. Fixes #26444. - - - - - 5785ff0c by mniip at 2025-09-26T11:10:18-04:00 rts: Refactor parsing of -h flags We have a nontrivial amount of heap profiling flags available in the non-profiled runtime, so it makes sense to reuse the parsing code between the profiled and the non-profiled runtime, only restricting which flags are allowed. - - - - - 6c0c9d24 by mniip at 2025-09-26T11:10:18-04:00 rts: Fix parsing of -h options with braces When the "filter by" -h options were introduced in bc210f7d267e8351ccb66972f4b3a650eb9338bb, the braces were mandatory. Then in 3c22fb21fb18e27ce8d941069a6915fce584a526, the braces were made optional. Then in d1ce35d2271ac8b79cb5e37677b1a989749e611c the brace syntax stopped working, and no one seems to have noticed. - - - - - 07d5cdc7 by mniip at 2025-09-26T11:10:18-04:00 rts: add -hT<type> and -hi<table id> heap filtering options (#26361) They are available in non-profiled builds. Along the way fixed a bug where combining -he<era> and -hr<retainer> would ignore whether the retainer matches or not. - - - - - d70d1a90 by mniip at 2025-09-26T11:10:18-04:00 docs: Document -hT<type> and -hi<addr> - - - - - eef18674 by mniip at 2025-09-26T11:10:18-04:00 rts: Refactor dumping the heap census Always do the printing of the total size right next to where the bucket label is printed. This prevents accidentally printing a label without the corresponding amount. Fixed a bug where exactly this happened for -hi profile and the 0x0 (uncategorized) info table. There is now also much more symmetry between fprintf(hp_file,...) and the corresponding traceHeapProfSampleString. - - - - - 63f6e6b2 by Cheng Shao at 2025-09-26T11:10:19-04:00 hadrian: fix GHC.Platform.Host generation for cross stage1 This patch fixes incorrectly GHC.Platform.Host generation logic for cross stage1 in hadrian (#26449). Also adds T26449 test case to witness the fix. Co-authored-by: Codex <codex(a)openai.com> - - - - - 16 changed files: - compiler/GHC/Core/Unfold.hs - docs/users_guide/profiling.rst - hadrian/src/Rules/Generate.hs - libraries/ghc-internal/src/GHC/Internal/RTS/Flags.hsc - m4/fptools_set_c_ld_flags.m4 - rts/ProfHeap.c - rts/RetainerSet.c - rts/RtsFlags.c - rts/include/rts/Flags.h - rts/js/mem.js - testsuite/driver/testlib.py - + testsuite/tests/cross/should_run/T26449.hs - + testsuite/tests/cross/should_run/all.T - testsuite/tests/interface-stability/ghc-experimental-exports.stdout - testsuite/tests/interface-stability/ghc-experimental-exports.stdout-mingw32 - utils/ghc-toolchain/src/GHC/Toolchain/Tools/Link.hs Changes: ===================================== compiler/GHC/Core/Unfold.hs ===================================== @@ -637,6 +637,7 @@ sizeExpr opts !bOMB_OUT_SIZE top_args expr where is_top_arg (Var v) | v `elem` top_args = Just v is_top_arg (Cast e _) = is_top_arg e + is_top_arg (Tick _t e) = is_top_arg e is_top_arg _ = Nothing where ===================================== docs/users_guide/profiling.rst ===================================== @@ -1003,6 +1003,11 @@ follows: The flags below are marked with ``:noindex:`` to avoid duplicate ID warnings from Sphinx. +.. rts-flag:: -hT ⟨type⟩ + :noindex: + + Restrict the profile to closures with the specified closure types. + .. rts-flag:: -hc ⟨name⟩ :noindex: @@ -1050,6 +1055,13 @@ follows: biographies, where ⟨bio⟩ is one of ``lag``, ``drag``, ``void``, or ``use``. +.. rts-flag:: -hi ⟨addr⟩ + :noindex: + + Restrict the profile to closures with specified info table addresses. The + address should start with ``0x`` and be lowercase hexadecimal, just like the + addresses produced by :rts-flag:`-hi`. + For example, the following options will generate a retainer profile restricted to ``Branch`` and ``Leaf`` constructors: ===================================== hadrian/src/Rules/Generate.hs ===================================== @@ -606,8 +606,12 @@ generateVersionHs = do generatePlatformHostHs :: Expr String generatePlatformHostHs = do trackGenerateHs - cHostPlatformArch <- queryHost (archOS_arch . tgtArchOs) - cHostPlatformOS <- queryHost (archOS_OS . tgtArchOs) + stage <- getStage + let chooseHostQuery = case stage of + Stage0 {} -> queryHost + _ -> queryTarget + cHostPlatformArch <- chooseHostQuery (archOS_arch . tgtArchOs) + cHostPlatformOS <- chooseHostQuery (archOS_OS . tgtArchOs) return $ unlines [ "module GHC.Platform.Host where" , "" ===================================== libraries/ghc-internal/src/GHC/Internal/RTS/Flags.hsc ===================================== @@ -312,6 +312,8 @@ data ProfFlags = ProfFlags , retainerSelector :: Maybe String , bioSelector :: Maybe String , eraSelector :: Word -- ^ @since base-4.20.0.0 + , closureTypeSelector :: Maybe String + , infoTableSelector :: Maybe String } deriving ( Show -- ^ @since base-4.8.0.0 , Generic -- ^ @since base-4.15.0.0 ) @@ -613,6 +615,8 @@ getProfFlags = do <*> (peekCStringOpt =<< #{peek PROFILING_FLAGS, retainerSelector} ptr) <*> (peekCStringOpt =<< #{peek PROFILING_FLAGS, bioSelector} ptr) <*> #{peek PROFILING_FLAGS, eraSelector} ptr + <*> (peekCStringOpt =<< #{peek PROFILING_FLAGS, closureTypeSelector} ptr) + <*> (peekCStringOpt =<< #{peek PROFILING_FLAGS, infoTableSelector} ptr) getTraceFlags :: IO TraceFlags getTraceFlags = do ===================================== m4/fptools_set_c_ld_flags.m4 ===================================== @@ -109,9 +109,6 @@ AC_DEFUN([FPTOOLS_SET_C_LD_FLAGS], $2="$$2 -mcmodel=medium" ;; - javascript*) - $3="$$3 -sEXPORTED_RUNTIME_METHODS=HEAP8,HEAPU8" - esac AC_MSG_RESULT([done]) ===================================== rts/ProfHeap.c ===================================== @@ -181,6 +181,28 @@ static void dumpCensus( Census *census ); static bool closureSatisfiesConstraints( const StgClosure* p ); +static const char *closureTypeIdentity( const StgClosure *p ) +{ + const StgInfoTable *info = get_itbl(p); + switch (info->type) { + case CONSTR: + case CONSTR_1_0: + case CONSTR_0_1: + case CONSTR_2_0: + case CONSTR_1_1: + case CONSTR_0_2: + case CONSTR_NOCAF: + return GET_CON_DESC(itbl_to_con_itbl(info)); + default: + return closure_type_names[info->type]; + } +} + +static void formatIPELabel( char *str, size_t size, uint64_t table_id ) +{ + snprintf(str, size, "0x%" PRIx64, table_id); +} + /* ---------------------------------------------------------------------------- * Find the "closure identity", which is a unique pointer representing * the band to which this closure's heap space is attributed in the @@ -215,26 +237,9 @@ closureIdentity( const StgClosure *p ) #endif case HEAP_BY_CLOSURE_TYPE: - { - const StgInfoTable *info; - info = get_itbl(p); - switch (info->type) { - case CONSTR: - case CONSTR_1_0: - case CONSTR_0_1: - case CONSTR_2_0: - case CONSTR_1_1: - case CONSTR_0_2: - case CONSTR_NOCAF: - return GET_CON_DESC(itbl_to_con_itbl(info)); - default: - return closure_type_names[info->type]; - } - } + return closureTypeIdentity(p); case HEAP_BY_INFO_TABLE: - { return (void *) (p->header.info); - } default: barf("closureIdentity"); @@ -664,6 +669,8 @@ fprint_ccs(FILE *fp, CostCentreStack *ccs, uint32_t max_length) fprintf(fp, "%s", buf); } +#endif /* PROFILING */ + bool strMatchesSelector( const char* str, const char* sel ) { @@ -688,8 +695,6 @@ strMatchesSelector( const char* str, const char* sel ) } } -#endif /* PROFILING */ - /* ----------------------------------------------------------------------------- * Figure out whether a closure should be counted in this census, by * testing against all the specified constraints. @@ -697,11 +702,8 @@ strMatchesSelector( const char* str, const char* sel ) static bool closureSatisfiesConstraints( const StgClosure* p ) { -#if !defined(PROFILING) - (void)p; /* keep gcc -Wall happy */ - return true; -#else - bool b; + bool b; +#if defined(PROFILING) // The CCS has a selected field to indicate whether this closure is // deselected by not being mentioned in the module, CC, or CCS @@ -721,7 +723,8 @@ closureSatisfiesConstraints( const StgClosure* p ) if (!b) return false; } if (RtsFlags.ProfFlags.eraSelector) { - return (p->header.prof.hp.era == RtsFlags.ProfFlags.eraSelector); + b = p->header.prof.hp.era == RtsFlags.ProfFlags.eraSelector; + if (!b) return false; } if (RtsFlags.ProfFlags.retainerSelector) { RetainerSet *rs; @@ -742,8 +745,21 @@ closureSatisfiesConstraints( const StgClosure* p ) } return false; } - return true; +#else + if (RtsFlags.ProfFlags.closureTypeSelector) { + b = strMatchesSelector( closureTypeIdentity(p), + RtsFlags.ProfFlags.closureTypeSelector ); + if (!b) return false; + } + if (RtsFlags.ProfFlags.infoTableSelector) { + char str[100]; + formatIPELabel(str, sizeof str, lookupIPEId(p->header.info)); + b = strMatchesSelector( str, + RtsFlags.ProfFlags.infoTableSelector ); + if (!b) return false; + } #endif /* PROFILING */ + return true; } /* ----------------------------------------------------------------------------- @@ -858,12 +874,11 @@ aggregateCensusInfo( void ) static void recordIPEHeapSample(FILE *hp_file, uint64_t table_id, size_t count) { - // Print to heap profile file - fprintf(hp_file, "0x%" PRIx64, table_id); - - // Create label string for tracing char str[100]; - sprintf(str, "0x%" PRIx64, table_id); + formatIPELabel(str, sizeof str, table_id); + + // Print to heap profile file + fprintf(hp_file, "%s\t%" FMT_Word "\n", str, (W_)(count * sizeof(W_))); // Emit the profiling sample (convert count to bytes) traceHeapProfSampleString(str, count * sizeof(W_)); @@ -961,7 +976,9 @@ dumpCensus( Census *census ) switch (RtsFlags.ProfFlags.doHeapProfile) { case HEAP_BY_CLOSURE_TYPE: - fprintf(hp_file, "%s", (char *)ctr->identity); + fprintf(hp_file, "%s\t%" FMT_Word "\n", + (char *)ctr->identity, + (W_)(count * sizeof(W_))); traceHeapProfSampleString((char *)ctr->identity, count * sizeof(W_)); break; @@ -979,19 +996,26 @@ dumpCensus( Census *census ) case HEAP_BY_CCS: fprint_ccs(hp_file, (CostCentreStack *)ctr->identity, RtsFlags.ProfFlags.ccsLength); + fprintf(hp_file, "\t%" FMT_Word "\n", + (W_)(count * sizeof(W_))); traceHeapProfSampleCostCentre((CostCentreStack *)ctr->identity, count * sizeof(W_)); break; case HEAP_BY_ERA: - fprintf(hp_file, "%" FMT_Word, (StgWord)ctr->identity); + { char str_era[100]; - sprintf(str_era, "%" FMT_Word, (StgWord)ctr->identity); + snprintf(str_era, sizeof str_era, "%" FMT_Word, + (StgWord)ctr->identity); + fprintf(hp_file, "%s\t%" FMT_Word "\n", + str_era, (W_)(count * sizeof(W_))); traceHeapProfSampleString(str_era, count * sizeof(W_)); break; + } case HEAP_BY_MOD: case HEAP_BY_DESCR: case HEAP_BY_TYPE: - fprintf(hp_file, "%s", (char *)ctr->identity); + fprintf(hp_file, "%s\t%" FMT_Word "\n", + (char *)ctr->identity, (W_)(count * sizeof(W_))); traceHeapProfSampleString((char *)ctr->identity, count * sizeof(W_)); break; @@ -1002,29 +1026,28 @@ dumpCensus( Census *census ) // it might be the distinguished retainer set rs_MANY: if (rs == &rs_MANY) { fprintf(hp_file, "MANY"); - break; - } + } else { - // Mark this retainer set by negating its id, because it - // has appeared in at least one census. We print the - // values of all such retainer sets into the log file at - // the end. A retainer set may exist but not feature in - // any censuses if it arose as the intermediate retainer - // set for some closure during retainer set calculation. - if (rs->id > 0) - rs->id = -(rs->id); - - // report in the unit of bytes: * sizeof(StgWord) - printRetainerSetShort(hp_file, rs, (W_)count * sizeof(W_) - , RtsFlags.ProfFlags.ccsLength); + // Mark this retainer set by negating its id, because it + // has appeared in at least one census. We print the + // values of all such retainer sets into the log file at + // the end. A retainer set may exist but not feature in + // any censuses if it arose as the intermediate retainer + // set for some closure during retainer set calculation. + if (rs->id > 0) + rs->id = -(rs->id); + + // report in the unit of bytes: * sizeof(StgWord) + printRetainerSetShort(hp_file, rs, (W_)(count * sizeof(W_)) + , RtsFlags.ProfFlags.ccsLength); + } + fprintf(hp_file, "\t%" FMT_Word "\n", (W_)(count * sizeof(W_))); break; } #endif default: barf("dumpCensus; doHeapProfile"); } - - fprintf(hp_file, "\t%" FMT_Word "\n", (W_)count * sizeof(W_)); } // Print the unallocated data into the 0 band for info table profiling. ===================================== rts/RetainerSet.c ===================================== @@ -237,7 +237,7 @@ printRetainerSetShort(FILE *f, RetainerSet *rs, W_ total_size, uint32_t max_leng // size = strlen(tmp); } } - fputs(tmp, f); + fprintf(f, "%s\t%" FMT_Word "\n", tmp, total_size); traceHeapProfSampleString(tmp, total_size); } ===================================== rts/RtsFlags.c ===================================== @@ -112,9 +112,7 @@ static void bad_option (const char *s); static void read_debug_flags(const char *arg); #endif -#if defined(PROFILING) static bool read_heap_profiling_flag(const char *arg); -#endif #if defined(TRACING) static void read_trace_flags(const char *arg); @@ -237,6 +235,9 @@ void initRtsFlagsDefaults(void) RtsFlags.ProfFlags.eraSelector = 0; #endif + RtsFlags.ProfFlags.closureTypeSelector = NULL; + RtsFlags.ProfFlags.infoTableSelector = NULL; + #if defined(TRACING) RtsFlags.TraceFlags.tracing = TRACE_NONE; RtsFlags.TraceFlags.timestamp = false; @@ -403,6 +404,8 @@ usage_text[] = { " -hr<cc>... closures with specified retainers", " -hb<bio>... closures with specified biographies (lag,drag,void,use)", " -he<era>... closures with specified era", +" -hT<typ>,... specified closure types", +" -hi<adr>,... closures with specified info table addresses", "", " -R<size> Set the maximum retainer set size (default: 8)", "", @@ -418,6 +421,9 @@ usage_text[] = { " -h Heap residency profile (output file <program>.hp)", " -hT Produce a heap profile grouped by closure type", " -hi Produce a heap profile grouped by info table address", +" A subset of closures may be selected thusly:", +" -hT<typ>,... specified closure types", +" -hi<adr>,... closures with specified info table addresses", " -po<file> Override profiling output file name prefix (program name by default)", #endif /* PROFILING */ @@ -924,11 +930,10 @@ error = true; #endif #if defined(PROFILING) -# define PROFILING_BUILD_ONLY(x) x +# define PROFILING_BUILD_ONLY(_arg, x) x #else -# define PROFILING_BUILD_ONLY(x) \ -errorBelch("the flag %s requires the program to be built with -prof", \ - rts_argv[arg]); \ +# define PROFILING_BUILD_ONLY(arg, x) \ +errorBelch("the flag %s requires the program to be built with -prof", arg); \ error = true; #endif @@ -1485,11 +1490,11 @@ error = true; RtsFlags.CcFlags.outputFileNameStem = rts_argv[arg]+3; break; default: - PROFILING_BUILD_ONLY(); + PROFILING_BUILD_ONLY(rts_argv[arg],); } break; #else - PROFILING_BUILD_ONLY( + PROFILING_BUILD_ONLY(rts_argv[arg], switch (rts_argv[arg][2]) { case 'a': RtsFlags.CcFlags.doCostCentres = COST_CENTRES_ALL; @@ -1527,43 +1532,25 @@ error = true; case 'R': OPTION_SAFE; - PROFILING_BUILD_ONLY( + PROFILING_BUILD_ONLY(rts_argv[arg], RtsFlags.ProfFlags.maxRetainerSetSize = atof(rts_argv[arg]+2); ) break; case 'L': OPTION_SAFE; - PROFILING_BUILD_ONLY( + PROFILING_BUILD_ONLY(rts_argv[arg], RtsFlags.ProfFlags.ccsLength = atof(rts_argv[arg]+2); if(RtsFlags.ProfFlags.ccsLength <= 0) { bad_option(rts_argv[arg]); } ) break; case 'h': /* serial heap profile */ -#if !defined(PROFILING) - switch (rts_argv[arg][2]) { - case '\0': - errorBelch("-h is deprecated, use -hT instead."); - - FALLTHROUGH; - case 'T': - OPTION_UNSAFE; - RtsFlags.ProfFlags.doHeapProfile = HEAP_BY_CLOSURE_TYPE; - break; - case 'i': - OPTION_UNSAFE; - RtsFlags.ProfFlags.doHeapProfile = HEAP_BY_INFO_TABLE; - break; - default: - OPTION_SAFE; - PROFILING_BUILD_ONLY(); - } -#else +#if defined(PROFILING) OPTION_SAFE; - PROFILING_BUILD_ONLY( - error = read_heap_profiling_flag(rts_argv[arg]); - ); -#endif /* PROFILING */ +#else + OPTION_UNSAFE; +#endif + error = read_heap_profiling_flag(rts_argv[arg]); break; case 'i': /* heap sample interval */ @@ -1840,7 +1827,7 @@ error = true; case 'c': /* Debugging tool: show current cost centre on an exception */ OPTION_SAFE; - PROFILING_BUILD_ONLY( + PROFILING_BUILD_ONLY(rts_argv[arg], RtsFlags.ProfFlags.showCCSOnException = true; ); unchecked_arg_start++; @@ -2341,139 +2328,171 @@ static void read_debug_flags(const char* arg) } #endif -#if defined(PROFILING) // Parse a "-h" flag, returning whether the parse resulted in an error. static bool read_heap_profiling_flag(const char *arg) { - // Already parsed "-h" - + // Already parsed arg[0:2] = "-h" bool error = false; - switch (arg[2]) { - case '\0': - errorBelch("-h is deprecated, use -hc instead."); - FALLTHROUGH; - case 'C': - case 'c': - case 'M': - case 'm': - case 'D': - case 'd': - case 'Y': - case 'y': - case 'i': - case 'R': - case 'r': - case 'B': - case 'b': - case 'e': - case 'T': - if (arg[2] != '\0' && arg[3] != '\0') { - { - const char *left = strchr(arg, '{'); - const char *right = strrchr(arg, '}'); - - // curly braces are optional, for - // backwards compat. - if (left) - left = left+1; - else - left = arg + 3; - - if (!right) - right = arg + strlen(arg); - - char *selector = stgStrndup(left, right - left + 1); - - switch (arg[2]) { - case 'c': // cost centre label select - RtsFlags.ProfFlags.ccSelector = selector; - break; - case 'C': - RtsFlags.ProfFlags.ccsSelector = selector; - break; - case 'M': - case 'm': // cost centre module select - RtsFlags.ProfFlags.modSelector = selector; - break; - case 'D': - case 'd': // closure descr select - RtsFlags.ProfFlags.descrSelector = selector; - break; - case 'Y': - case 'y': // closure type select - RtsFlags.ProfFlags.typeSelector = selector; - break; - case 'R': - case 'r': // retainer select - RtsFlags.ProfFlags.retainerSelector = selector; - break; - case 'B': - case 'b': // biography select - RtsFlags.ProfFlags.bioSelector = selector; - break; - case 'E': - case 'e': // era select - RtsFlags.ProfFlags.eraSelector = strtoul(selector, (char **) NULL, 10); - break; - default: - stgFree(selector); - } - } - break; - } + char property; + const char *filter; + if (arg[2] != '\0') { + property = arg[2]; + filter = arg + 3; + } else { +#if defined(PROFILING) + errorBelch("-h is deprecated, use -hc instead."); + property = 'c'; + filter = arg + 2; +#else + errorBelch("-h is deprecated, use -hT instead."); + property = 'T'; + filter = arg + 2; +#endif + } + // here property is initialized, and filter is a pointer inside arg - if (RtsFlags.ProfFlags.doHeapProfile != 0) { - errorBelch("multiple heap profile options"); - error = true; - break; - } + if (filter[0] != '\0') { + // For backwards compat, extract the portion between curly braces, else + // use the entire string + const char *left = strchr(filter, '{'); + const char *right = strrchr(filter, '}'); - switch (arg[2]) { - case '\0': + if (left) + left = left + 1; + else + left = filter; + + if (!right) + right = filter + strlen(filter); + + char *selector = stgStrndup(left, right - left); + switch (property) { +#if defined(PROFILING) + case 'c': // cost centre label select + RtsFlags.ProfFlags.ccSelector = selector; + break; case 'C': - case 'c': - RtsFlags.ProfFlags.doHeapProfile = HEAP_BY_CCS; + RtsFlags.ProfFlags.ccsSelector = selector; break; case 'M': - case 'm': - RtsFlags.ProfFlags.doHeapProfile = HEAP_BY_MOD; + case 'm': // cost centre module select + RtsFlags.ProfFlags.modSelector = selector; break; case 'D': - case 'd': - RtsFlags.ProfFlags.doHeapProfile = HEAP_BY_DESCR; + case 'd': // closure descr select + RtsFlags.ProfFlags.descrSelector = selector; break; case 'Y': - case 'y': - RtsFlags.ProfFlags.doHeapProfile = HEAP_BY_TYPE; + case 'y': // closure type select + RtsFlags.ProfFlags.typeSelector = selector; break; - case 'i': - RtsFlags.ProfFlags.doHeapProfile = HEAP_BY_INFO_TABLE; + case 'R': + case 'r': // retainer select + RtsFlags.ProfFlags.retainerSelector = selector; break; + case 'B': + case 'b': // biography select + RtsFlags.ProfFlags.bioSelector = selector; + break; + case 'E': + case 'e': // era select + RtsFlags.ProfFlags.eraSelector = strtoul(selector, (char **) NULL, 10); + break; +#else + case 'c': + case 'C': + case 'M': + case 'm': + case 'D': + case 'd': + case 'Y': + case 'y': case 'R': case 'r': - RtsFlags.ProfFlags.doHeapProfile = HEAP_BY_RETAINER; - break; case 'B': case 'b': - RtsFlags.ProfFlags.doHeapProfile = HEAP_BY_LDV; + case 'E': + case 'e': + PROFILING_BUILD_ONLY(arg,); break; - case 'T': - RtsFlags.ProfFlags.doHeapProfile = HEAP_BY_CLOSURE_TYPE; + case 'T': /* closure type select */ + RtsFlags.ProfFlags.closureTypeSelector = selector; break; - case 'e': - RtsFlags.ProfFlags.doHeapProfile = HEAP_BY_ERA; + case 'i': /* info table select */ + RtsFlags.ProfFlags.infoTableSelector = selector; break; - } - break; - default: - errorBelch("invalid heap profile option: %s", arg); - error = true; +#endif /* PROFILING */ + default: + stgFree(selector); + } + } else { + if (RtsFlags.ProfFlags.doHeapProfile != 0) { + errorBelch("multiple heap profile options"); + error = true; + } else { + switch (property) { +#if defined(PROFILING) + case 'C': + case 'c': + RtsFlags.ProfFlags.doHeapProfile = HEAP_BY_CCS; + break; + case 'M': + case 'm': + RtsFlags.ProfFlags.doHeapProfile = HEAP_BY_MOD; + break; + case 'D': + case 'd': + RtsFlags.ProfFlags.doHeapProfile = HEAP_BY_DESCR; + break; + case 'Y': + case 'y': + RtsFlags.ProfFlags.doHeapProfile = HEAP_BY_TYPE; + break; + case 'R': + case 'r': + RtsFlags.ProfFlags.doHeapProfile = HEAP_BY_RETAINER; + break; + case 'B': + case 'b': + RtsFlags.ProfFlags.doHeapProfile = HEAP_BY_LDV; + break; + case 'e': + RtsFlags.ProfFlags.doHeapProfile = HEAP_BY_ERA; + break; +#else + case 'C': + case 'c': + case 'M': + case 'm': + case 'D': + case 'd': + case 'Y': + case 'y': + case 'R': + case 'r': + case 'B': + case 'b': + case 'e': + PROFILING_BUILD_ONLY(arg,); + break; +#endif /* PROFILING*/ + case 'T': + RtsFlags.ProfFlags.doHeapProfile = HEAP_BY_CLOSURE_TYPE; + break; + case 'i': + RtsFlags.ProfFlags.doHeapProfile = HEAP_BY_INFO_TABLE; + break; + default: + errorBelch("invalid heap profile option: %s", arg); + error = true; + break; + } + } } return error; } -#endif #if defined(TRACING) static void read_trace_flags(const char *arg) ===================================== rts/include/rts/Flags.h ===================================== @@ -170,6 +170,8 @@ typedef struct _PROFILING_FLAGS { const char* retainerSelector; StgWord eraSelector; const char* bioSelector; + const char* closureTypeSelector; + const char* infoTableSelector; } PROFILING_FLAGS; ===================================== rts/js/mem.js ===================================== @@ -1,5 +1,5 @@ //#OPTIONS:CPP -//#OPTIONS:EMCC:EXPORTED_RUNTIME_METHODS=addFunction,removeFunction,getEmptyTableSlot,HEAP8 +//#OPTIONS:EMCC:EXPORTED_RUNTIME_METHODS=addFunction,removeFunction,getEmptyTableSlot,HEAP8,HEAPU8 // #define GHCJS_TRACE_META 1 ===================================== testsuite/driver/testlib.py ===================================== @@ -3005,7 +3005,7 @@ def normalise_errmsg(s: str) -> str: # Emscripten displays cache info and old emcc doesn't support EMCC_LOGGING=0 s = re.sub('cache:INFO: .*\n', '', s) # Old emcc warns when we export HEAP8 but new one requires it (see #26290) - s = s.replace('warning: invalid item in EXPORTED_RUNTIME_METHODS: HEAP8\nemcc: warning: warnings in JS library compilation [-Wjs-compiler]\n','') + s = s.replace('warning: invalid item in EXPORTED_RUNTIME_METHODS: HEAP8\nwarning: invalid item in EXPORTED_RUNTIME_METHODS: HEAPU8\nemcc: warning: warnings in JS library compilation [-Wjs-compiler]\n','') return s ===================================== testsuite/tests/cross/should_run/T26449.hs ===================================== @@ -0,0 +1,16 @@ +import Control.Monad +import GHC.Platform.ArchOS +import GHC.Platform.Host +import System.Info + +main :: IO () +main = + when ((arch, os) /= (arch', os')) $ + fail $ + "System.Info says host platform is " + <> show (arch, os) + <> " but GHC.Platform.Host says " + <> show (arch', os') + where + (arch', os') = + (stringEncodeArch hostPlatformArch, stringEncodeOS hostPlatformOS) ===================================== testsuite/tests/cross/should_run/all.T ===================================== @@ -0,0 +1 @@ +test('T26449', [], compile_and_run, ['']) ===================================== testsuite/tests/interface-stability/ghc-experimental-exports.stdout ===================================== @@ -6363,7 +6363,9 @@ module GHC.RTS.Flags.Experimental where ccsSelector :: GHC.Internal.Maybe.Maybe GHC.Internal.Base.String, retainerSelector :: GHC.Internal.Maybe.Maybe GHC.Internal.Base.String, bioSelector :: GHC.Internal.Maybe.Maybe GHC.Internal.Base.String, - eraSelector :: GHC.Internal.Types.Word} + eraSelector :: GHC.Internal.Types.Word, + closureTypeSelector :: GHC.Internal.Maybe.Maybe GHC.Internal.Base.String, + infoTableSelector :: GHC.Internal.Maybe.Maybe GHC.Internal.Base.String} type RTSFlags :: * data RTSFlags = RTSFlags {gcFlags :: GCFlags, concurrentFlags :: ConcFlags, miscFlags :: MiscFlags, debugFlags :: DebugFlags, costCentreFlags :: CCFlags, profilingFlags :: ProfFlags, traceFlags :: TraceFlags, tickyFlags :: TickyFlags, parFlags :: ParFlags, hpcFlags :: HpcFlags} type RtsTime :: * ===================================== testsuite/tests/interface-stability/ghc-experimental-exports.stdout-mingw32 ===================================== @@ -6366,7 +6366,9 @@ module GHC.RTS.Flags.Experimental where ccsSelector :: GHC.Internal.Maybe.Maybe GHC.Internal.Base.String, retainerSelector :: GHC.Internal.Maybe.Maybe GHC.Internal.Base.String, bioSelector :: GHC.Internal.Maybe.Maybe GHC.Internal.Base.String, - eraSelector :: GHC.Internal.Types.Word} + eraSelector :: GHC.Internal.Types.Word, + closureTypeSelector :: GHC.Internal.Maybe.Maybe GHC.Internal.Base.String, + infoTableSelector :: GHC.Internal.Maybe.Maybe GHC.Internal.Base.String} type RTSFlags :: * data RTSFlags = RTSFlags {gcFlags :: GCFlags, concurrentFlags :: ConcFlags, miscFlags :: MiscFlags, debugFlags :: DebugFlags, costCentreFlags :: CCFlags, profilingFlags :: ProfFlags, traceFlags :: TraceFlags, tickyFlags :: TickyFlags, parFlags :: ParFlags, hpcFlags :: HpcFlags} type RtsTime :: * ===================================== utils/ghc-toolchain/src/GHC/Toolchain/Tools/Link.hs ===================================== @@ -324,10 +324,6 @@ addPlatformDepLinkFlags archOs cc ccLink0 = do ArchOS ArchPPC OSAIX -> -- We need `-D_THREAD_SAFE` to unlock the thread-local `errno`. return $ ccLink2 & over _prgFlags (++["-D_THREAD_SAFE","-Wl,-bnotextro"]) - ArchOS ArchJavaScript OSGhcjs -> - -- Since https://github.com/emscripten-core/emscripten/blob/main/ChangeLog.md#407---… - -- the emcc linker does not export the HEAP8 memory view which is used by the js RTS by default anymore. - return $ ccLink2 & _prgFlags %++ "-sEXPORTED_RUNTIME_METHODS=HEAP8,HEAPU8" _ -> return ccLink2 View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/ad3198681838aae86640797d71e145… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/ad3198681838aae86640797d71e145… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][master] sizeExpr: Improve Tick handling.
by Marge Bot (＠marge-bot) 26 Sep '25

26 Sep '25

Marge Bot pushed to branch master at Glasgow Haskell Compiler / GHC Commits: b10296a9 by Andreas Klebinger at 2025-09-26T10:37:11-04:00 sizeExpr: Improve Tick handling. When determining if we scrutinize a function argument we now properly look through ticks. Fixes #26444. - - - - - 1 changed file: - compiler/GHC/Core/Unfold.hs Changes: ===================================== compiler/GHC/Core/Unfold.hs ===================================== @@ -637,6 +637,7 @@ sizeExpr opts !bOMB_OUT_SIZE top_args expr where is_top_arg (Var v) | v `elem` top_args = Just v is_top_arg (Cast e _) = is_top_arg e + is_top_arg (Tick _t e) = is_top_arg e is_top_arg _ = Nothing where View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/b10296a90794d7182ec0c73b053c775… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/b10296a90794d7182ec0c73b053c775… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][master] 2 commits: Revert "Add necessary flag for js linking"
by Marge Bot (＠marge-bot) 26 Sep '25

26 Sep '25

Marge Bot pushed to branch master at Glasgow Haskell Compiler / GHC Commits: c1cab0c3 by Sylvain Henry at 2025-09-26T10:36:30-04:00 Revert "Add necessary flag for js linking" This reverts commit 84f68e2231b2eddb2e1dc4e90af394ef0f2e803f. This commit didn't have the expected effect. See discussion in #26290. Instead we export HEAP8 and HEAPU8 from rts/js/mem.js - - - - - 0a434a80 by Sylvain Henry at 2025-09-26T10:36:30-04:00 JS: export HEAPU8 (#26290) This is now required by newer Emscripten versions. - - - - - 4 changed files: - m4/fptools_set_c_ld_flags.m4 - rts/js/mem.js - testsuite/driver/testlib.py - utils/ghc-toolchain/src/GHC/Toolchain/Tools/Link.hs Changes: ===================================== m4/fptools_set_c_ld_flags.m4 ===================================== @@ -109,9 +109,6 @@ AC_DEFUN([FPTOOLS_SET_C_LD_FLAGS], $2="$$2 -mcmodel=medium" ;; - javascript*) - $3="$$3 -sEXPORTED_RUNTIME_METHODS=HEAP8,HEAPU8" - esac AC_MSG_RESULT([done]) ===================================== rts/js/mem.js ===================================== @@ -1,5 +1,5 @@ //#OPTIONS:CPP -//#OPTIONS:EMCC:EXPORTED_RUNTIME_METHODS=addFunction,removeFunction,getEmptyTableSlot,HEAP8 +//#OPTIONS:EMCC:EXPORTED_RUNTIME_METHODS=addFunction,removeFunction,getEmptyTableSlot,HEAP8,HEAPU8 // #define GHCJS_TRACE_META 1 ===================================== testsuite/driver/testlib.py ===================================== @@ -3005,7 +3005,7 @@ def normalise_errmsg(s: str) -> str: # Emscripten displays cache info and old emcc doesn't support EMCC_LOGGING=0 s = re.sub('cache:INFO: .*\n', '', s) # Old emcc warns when we export HEAP8 but new one requires it (see #26290) - s = s.replace('warning: invalid item in EXPORTED_RUNTIME_METHODS: HEAP8\nemcc: warning: warnings in JS library compilation [-Wjs-compiler]\n','') + s = s.replace('warning: invalid item in EXPORTED_RUNTIME_METHODS: HEAP8\nwarning: invalid item in EXPORTED_RUNTIME_METHODS: HEAPU8\nemcc: warning: warnings in JS library compilation [-Wjs-compiler]\n','') return s ===================================== utils/ghc-toolchain/src/GHC/Toolchain/Tools/Link.hs ===================================== @@ -324,10 +324,6 @@ addPlatformDepLinkFlags archOs cc ccLink0 = do ArchOS ArchPPC OSAIX -> -- We need `-D_THREAD_SAFE` to unlock the thread-local `errno`. return $ ccLink2 & over _prgFlags (++["-D_THREAD_SAFE","-Wl,-bnotextro"]) - ArchOS ArchJavaScript OSGhcjs -> - -- Since https://github.com/emscripten-core/emscripten/blob/main/ChangeLog.md#407---… - -- the emcc linker does not export the HEAP8 memory view which is used by the js RTS by default anymore. - return $ ccLink2 & _prgFlags %++ "-sEXPORTED_RUNTIME_METHODS=HEAP8,HEAPU8" _ -> return ccLink2 View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/8bf5b309e9d162f187e96562e6432d… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/8bf5b309e9d162f187e96562e6432d… You're receiving this email because of your account on gitlab.haskell.org.

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