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undo CL 14231047 / 2f4c2dde2756

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undone because the change slows down profile collection
significantly and unpredictable at times (see comments
at https://golang.org/cl/14231047 for details)

««« original CL description
runtime: collect profiles even while on g0 stack

Fixes #6417

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/14231047
»»»

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/14535046
This commit is contained in:
Alex Brainman 2013-10-15 14:37:43 -04:00 committed by Russ Cox
parent 043ace1213
commit 9aee98def8
1 changed files with 1 additions and 1 deletions
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2
src/pkg/runtime/os_windows.c
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@ -402,7 +402,7 @@ profilem(M *mp)
tls = runtime·tls0;
gp = *(G**)tls;
if(gp != nil) {
if(gp != nil && gp != mp->g0 && gp->status != Gsyscall) {
// align Context to 16 bytes
r = (Context*)((uintptr)(&rbuf[15]) & ~15);
r->ContextFlags = CONTEXT_CONTROL;