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runtime: mark race instrumentation callbacks as nosplitstack

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It speedups the race detector somewhat, but also prevents
getcallerpc() from obtaining lessstack().

R=golang-dev, iant
CC=golang-dev
https://golang.org/cl/6812091
This commit is contained in:
Dmitriy Vyukov 2012-11-06 20:54:22 +04:00
parent fb9706d3be
commit 0ead18c59e
1 changed files with 6 additions and 0 deletions
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6
src/pkg/runtime/race.c
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@ -47,6 +47,8 @@ runtime·racefini(void)
} }
// Called from instrumented code. // Called from instrumented code.
// If we split stack, getcallerpc() can return runtime·lessstack().
#pragma textflag 7
void void
runtime·racewrite(uintptr addr) runtime·racewrite(uintptr addr)
{ {
@ -58,6 +60,8 @@ runtime·racewrite(uintptr addr)
} }
// Called from instrumented code. // Called from instrumented code.
// If we split stack, getcallerpc() can return runtime·lessstack().
#pragma textflag 7
void void
runtime·raceread(uintptr addr) runtime·raceread(uintptr addr)
{ {
@ -69,6 +73,7 @@ runtime·raceread(uintptr addr)
} }
// Called from instrumented code. // Called from instrumented code.
#pragma textflag 7
void void
runtime·racefuncenter(uintptr pc) runtime·racefuncenter(uintptr pc)
{ {
@ -83,6 +88,7 @@ runtime·racefuncenter(uintptr pc)
} }
// Called from instrumented code. // Called from instrumented code.
#pragma textflag 7
void void
runtime·racefuncexit(void) runtime·racefuncexit(void)
{ {