rts · warning-for-head-and-tail · Bodigrim / GHC

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rts: Fix capability-count check in zeroSlop

Ben Gamari authored 2 years ago

Previously `zeroSlop` examined `RtsFlags` to determine whether the
program was single-threaded. This is wrong; a program may be started
with `+RTS -N1` yet the process may later increase the capability count
with `setNumCapabilities`. This lead to quite subtle and rare crashes.

Fixes #23088.

c32abd4b

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c32abd4b 2 years ago

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Name	Last commit	Last update
..
adjustor
eventlog
hooks
include
js
linker
posix
sm
wasm
win32
.dir-locals.el
.gitignore
.tsan-suppressions
Adjustor.c
Adjustor.h
AdjustorAsm.S
Apply.cmm
Apply.h
Arena.c
Arena.h
AutoApply.h
BeginPrivate.h
Capability.c
Capability.h
CheckUnload.c
CheckUnload.h
CloneStack.c
CloneStack.h
ClosureFlags.c
ClosureSize.c
Compact.cmm
Continuation.c
Continuation.h
ContinuationOps.cmm
Disassembler.c
Disassembler.h
EndPrivate.h
Exception.cmm
Excn.h
ExecPage.c
FileLock.c
FileLock.h
ForeignExports.c
ForeignExports.h
GetEnv.h
GetTime.h
Globals.c
Globals.h
Hash.c
Hash.h
Heap.c
HeapStackCheck.cmm
Hpc.c
HsFFI.c
IOManager.c
IOManager.h
IPE.c
IPE.h
Inlines.c
Interpreter.c
Interpreter.h
LdvProfile.c
LdvProfile.h
Libdw.c
Libdw.h
LibdwPool.c
LibdwPool.h
Linker.c
LinkerInternals.h
Makefile
Messages.c
Messages.h
OldARMAtomic.c
PathUtils.c
PathUtils.h
Pool.c
Pool.h
Prelude.h
PrimOps.cmm
Printer.c
Printer.h
ProfHeap.c
ProfHeap.h
ProfHeapInternal.h
ProfilerReport.c
ProfilerReport.h
ProfilerReportJson.c
ProfilerReportJson.h
Profiling.c
Profiling.h
Proftimer.c
Proftimer.h
RaiseAsync.c
RaiseAsync.h
ReportMemoryMap.c
ReportMemoryMap.h
RetainerProfile.c
RetainerProfile.h
RetainerSet.c
RetainerSet.h