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go / go / e31e35a0dea212bba08d85449554dad2969a2d91
commite31e35a0dea212bba08d85449554dad2969a2d91[log] [tgz]
authorRick Hudson <rlh@golang.org>Tue Feb 24 17:49:55 2015 -0500
committerRick Hudson <rlh@golang.org>Wed Feb 25 00:14:42 2015 +0000
tree2d4c927da7ed3893758a77855f0de40aa6303c87
parent42289a4f394a31e88d7288b91887c614f218808e [diff]
runtime: reset gcscanvalid and gcworkdone when GODEBUG=gctrace=2

When GODEBUG=gctrace=2 two gcs are preformed. During the first gc
the stack scan sets the g's gcscanvalid and gcworkdone flags to true
indicating that the stacks have to be scanned and do not need to
be rescanned. These need to be reset to false for the second GC so the
stacks are rescanned, otherwise if the only pointer to an object is
on the stack it will not be discovered and the object will be freed.
Typically this will include the object that was just allocated in
the mallocgc call that initiated the GC.

Change-Id: Ic25163f4689905fd810c90abfca777324005c02f
Reviewed-on: https://go-review.googlesource.com/5861
Reviewed-by: Russ Cox <rsc@golang.org>
1 file changed
tree: 2d4c927da7ed3893758a77855f0de40aa6303c87
  1. api/
  2. doc/
  3. include/
  4. lib/
  5. misc/
  6. src/
  7. test/
  8. .gitattributes
  9. .gitignore
  10. AUTHORS
  11. CONTRIBUTING.md
  12. CONTRIBUTORS
  13. favicon.ico
  14. LICENSE
  15. PATENTS
  16. README.md
  17. robots.txt
README.md

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