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| author | Andy Pan <panjf2000@gmail.com> | 2020-03-27 03:21:17 +0000 |
|---|---|---|
| committer | Ian Lance Taylor <iant@golang.org> | 2020-03-27 17:14:16 +0000 |
| commit | 0cc1290174751971d282196e21ec9037b217e5a5 (patch) | |
| tree | b6d5698c1c4bc33df60d0259187d225326721cfd /src/os/exec/exec_test.go | |
| parent | e4a1cf8a5698d7351af0e33d61e4f7078f3ab1ce (diff) | |
| download | go-0cc1290174751971d282196e21ec9037b217e5a5.tar.xz | |
runtime: converge duplicate calls to netpollBreak into one
There might be some concurrent (maybe not concurrent, just sequential but in a short time window) and duplicate calls to `netpollBreak`, trying to wake up a net-poller. If one has called `netpollBreak` and that waking event hasn't been received by epollwait/kevent/..., then the subsequent calls of `netpollBreak` ought to be ignored or in other words, these calls should be converged into one.
Benchmarks go1.13.5 darwin/amd64:
benchmark-func time/op (old) time/op (new) delta
BenchmarkNetpollBreak-4 29668ns ±1% 3131ns ±2% -89.45%
mem/B (old) mem/B (new) delta
154B ±13% 0B ±0% -100%
Change-Id: I3cf757a5d6edc5a99adad7aea3baee4b7f2a8f5c
GitHub-Last-Rev: 15bcfbab8a5db51f65da01315a5880a5dbf9e028
GitHub-Pull-Request: golang/go#36294
Reviewed-on: https://go-review.googlesource.com/c/go/+/212737
Run-TryBot: Emmanuel Odeke <emm.odeke@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Diffstat (limited to 'src/os/exec/exec_test.go')
0 files changed, 0 insertions, 0 deletions