12 Apr
2023
12 Apr
'23
6:06 a.m.
One complication is that currently GHC has no way to know the value of LARGE_OBJECT_THRESHOLD (which is a runtime system macro). Typically to handle this sort of thing we use utils/deriveConstants to generate a Haskell binding mirroring the value of the C declaration. However, as GHC becomes runtime-retargetable we may need to revisit this design.
Since https://gitlab.haskell.org/ghc/ghc/-/commit/085983e63bfe6af23f8b85fbfcca8db4... (2021-03) we don't do this. We only read constants from the header file provided by the RTS unit. Adding one more constant for LARGE_OBJECT_THRESHOLD shouldn't be an issue. Cheers Sylvain