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| author | Ian Lance Taylor <iant@golang.org> | 2020-01-09 23:03:25 -0800 |
|---|---|---|
| committer | Ian Lance Taylor <iant@golang.org> | 2020-01-10 23:03:06 +0000 |
| commit | 641e61db57f176e33828ed5354810fa3f13ac76d (patch) | |
| tree | 5a2de90fbee3bad02ea5b6649afd2c0cddd4497d /src/runtime/runtime2.go | |
| parent | 1d4d7825a70168492e440af59556bfd6734fa883 (diff) | |
| download | go-641e61db57f176e33828ed5354810fa3f13ac76d.tar.gz go-641e61db57f176e33828ed5354810fa3f13ac76d.zip | |
runtime: don't let P's timer heap get clogged with deleted timers
Whenever more than 1/4 of the timers on a P's heap are deleted,
remove them from the heap.
Change-Id: Iff63ed3d04e6f33ffc5c834f77f645c52c007e52
Reviewed-on: https://go-review.googlesource.com/c/go/+/214299
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Diffstat (limited to 'src/runtime/runtime2.go')
| -rw-r--r-- | src/runtime/runtime2.go | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/runtime/runtime2.go b/src/runtime/runtime2.go index 3f9e51c528..10d8d8c043 100644 --- a/src/runtime/runtime2.go +++ b/src/runtime/runtime2.go @@ -650,6 +650,10 @@ type p struct { // such as timerModifying. adjustTimers uint32 + // Number of timerDeleted times in P's heap. + // Modified using atomic instructions. + deletedTimers uint32 + // Race context used while executing timer functions. timerRaceCtx uintptr |