qmuntal cf52e70997 runtime: use a high res timer to signal io completion ports on windows ... GetQueuedCompletionStatusEx has a ~16ms timeout resolution. Use a WaitCompletionPacket associated with the I/O Completion Port (IOCP) and a high resolution timer so the IOCP is signaled on timer expiry, therefore improving the GetQueuedCompletionStatusEx timeout resolution. BenchmarkSleep from the time package shows an important improvement: goos: windows goarch: amd64 pkg: time cpu: Intel(R) Core(TM) i7-10850H CPU @ 2.70GHz │ old.txt │ new.txt │ │ sec/op │ sec/op vs base │ Sleep-12 1258.5µ ± 5% 250.7µ ± 1% -80.08% (p=0.000 n=20) Fixes #44343. Change-Id: I79fc09e34dddfc49e0e23c3d1d0603926c22a11d Reviewed-on: https://go-review.googlesource.com/c/go/+/488675 Reviewed-by: Alex Brainman <alex.brainman@gmail.com> Run-TryBot: Quim Muntal <quimmuntal@gmail.com> TryBot-Result: Gopher Robot <gobot@golang.org> Reviewed-by: Bryan Mills <bcmills@google.com> Reviewed-by: Michael Knyszek <mknyszek@google.com> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>		2024-02-19 15:44:49 +00:00
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testdata
tzdata
embed.go
example_test.go	time: fix typo in ExampleParseDuration	2024-02-13 01:05:00 +00:00
export_android_test.go
export_test.go
export_windows_test.go
format_rfc3339.go
format_test.go	time: fix FuzzFormatRFC3339 nano comparison	2024-02-08 23:28:17 +00:00
format.go
genzabbrs.go
internal_test.go
mono_test.go
sleep_test.go	runtime: use a high res timer to signal io completion ports on windows	2024-02-19 15:44:49 +00:00
sleep.go
sys_plan9.go
sys_unix.go
sys_windows.go
tick_test.go
tick.go
time_test.go
time.go	runtime: use a high res timer to signal io completion ports on windows	2024-02-19 15:44:49 +00:00
tzdata_test.go
zoneinfo_abbrs_windows.go
zoneinfo_android_test.go
zoneinfo_android.go
zoneinfo_goroot.go
zoneinfo_ios.go
zoneinfo_js.go
zoneinfo_plan9.go
zoneinfo_read.go
zoneinfo_test.go
zoneinfo_unix_test.go
zoneinfo_unix.go
zoneinfo_wasip1.go
zoneinfo_windows_test.go
zoneinfo_windows.go
zoneinfo.go