PAP stands for partial application, i.e., a function with one or more
missing arguments. MUT_ARR_PTRS_FROZEN are mutable objects which are
not moved by the garbage collector. They are an implementation detail
of IORefs and mutable arrays (ST(U)Array, IO(U)Array, ...). Before
entering a suspended computation (a THUNK), GHC overwrites it with a
BLACKHOLE, to avoid space leaks and to detect cyclic dependencies.
HTH
On 10 March 2010 13:30, Soenke Hahn
When using the heap profiling options -hd (profiling by closure description) and -hy (profiling by type) there are some compiler-generated cost centres, for example "PAP", "MUT_ARR_PTRS_FROZEN" and "BLACKHOLE". I wasn't able to find documentation on them. Is there any?
Thanks, Sönke _______________________________________________ Glasgow-haskell-users mailing list Glasgow-haskell-users@haskell.org http://www.haskell.org/mailman/listinfo/glasgow-haskell-users
-- Push the envelope. Watch it bend.