diff options
| author | Simon Marlow <marlowsd@gmail.com> | 2012-11-16 09:22:00 +0000 |
|---|---|---|
| committer | Simon Marlow <marlowsd@gmail.com> | 2012-11-16 11:26:20 +0000 |
| commit | 6d784c43592290ec16db8b7f0f2a012dff3ed497 (patch) | |
| tree | a317ef1fc1ee40883e92cde308c292f7125db2b7 /rts/Linker.c | |
| parent | 97dc57c6e2bdbddd0a0170a283149a570a07179c (diff) | |
| download | haskell-6d784c43592290ec16db8b7f0f2a012dff3ed497.tar.gz | |
Add a write barrier for TVAR closures
This improves GC performance when there are a lot of TVars in the
heap. For instance, a TChan with a lot of elements causes a massive
GC drag without this patch.
There's more to do - several other STM closure types don't have write
barriers, so GC performance when there are a lot of threads blocked on
STM isn't great. But fixing the problem for TVar is a good start.
Diffstat (limited to 'rts/Linker.c')
| -rw-r--r-- | rts/Linker.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/rts/Linker.c b/rts/Linker.c index 0fd3be1052..066d07075a 100644 --- a/rts/Linker.c +++ b/rts/Linker.c @@ -1085,6 +1085,7 @@ typedef struct _RtsSymbolVal { SymI_HasProto(stg_deRefWeakzh) \ SymI_HasProto(stg_deRefStablePtrzh) \ SymI_HasProto(dirty_MUT_VAR) \ + SymI_HasProto(dirty_TVAR) \ SymI_HasProto(stg_forkzh) \ SymI_HasProto(stg_forkOnzh) \ SymI_HasProto(forkProcess) \ @@ -1219,6 +1220,8 @@ typedef struct _RtsSymbolVal { SymI_HasProto(startTimer) \ SymI_HasProto(stg_MVAR_CLEAN_info) \ SymI_HasProto(stg_MVAR_DIRTY_info) \ + SymI_HasProto(stg_TVAR_CLEAN_info) \ + SymI_HasProto(stg_TVAR_DIRTY_info) \ SymI_HasProto(stg_IND_STATIC_info) \ SymI_HasProto(stg_ARR_WORDS_info) \ SymI_HasProto(stg_MUT_ARR_PTRS_DIRTY_info) \ |