simonmar 2005/05/10 06:25:43 PDT
Modified files:
ghc/includes Cmm.h Regs.h Rts.h SMP.h
StgMiscClosures.h Storage.h
ghc/rts Capability.c Capability.h GC.c Makefile
PrimOps.cmm StgMiscClosures.cmm Storage.c
Log:
Two SMP-related changes:
- New storage manager interface:
bdescr *allocateLocal(StgRegTable *reg, nat words)
which allocates from the current thread's nursery (being careful
not to clash with the heap pointer). It can do this without
taking any locks; the lock only has to be taken if a block needs
to be allocated. allocateLocal() is now used instead of allocate()
in a few PrimOps.
This removes locks from most Integer operations, cutting down
the overhead for SMP a bit more.
To make this work, we have to be able to grab the current thread's
Capability out of thin air (i.e. when called from GMP), so the
Capability subsystem needs to keep a hash from thread IDs to
Capabilities.
- Small MVar optimisation: instead of taking the global
storage-manager lock, do our own locking of MVars with a bit of
inline assembly (x86 only for now).
Revision Changes Path
1.11 +4 -1 fptools/ghc/includes/Cmm.h
1.20 +2 -1 fptools/ghc/includes/Regs.h
1.34 +0 -5 fptools/ghc/includes/Rts.h
1.7 +26 -49 fptools/ghc/includes/SMP.h
1.59 +2 -0 fptools/ghc/includes/StgMiscClosures.h
1.14 +4 -0 fptools/ghc/includes/Storage.h
1.38 +30 -0 fptools/ghc/rts/Capability.c
1.20 +4 -0 fptools/ghc/rts/Capability.h
1.193 +6 -1 fptools/ghc/rts/GC.c
1.106 +2 -1 fptools/ghc/rts/Makefile
1.25 +34 -46 fptools/ghc/rts/PrimOps.cmm
1.6 +6 -0 fptools/ghc/rts/StgMiscClosures.cmm
1.97 +126 -43 fptools/ghc/rts/Storage.c
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