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go/misc
Michael Anthony Knyszek 4c943abb95 runtime: fix comments on the behavior of SetGCPercent
Fixes for #49680, #49695, #45867, and #49370 all assumed that
SetGCPercent(-1) doesn't block until the GC's mark phase is done, but
it actually does. The cause of 3 of those 4 failures comes from the fact
that at the beginning of the sweep phase, the GC does try to preempt
every P once, and this may run concurrently with test code. In the
fourth case, the issue was likely that only *one* of the debug_test.go
tests was missing a call to SetGCPercent(-1). Just to be safe, leave a
TODO there for now to remove the extraneous runtime.GC calls, but leave
the calls in.

Updates #49680, #49695, #45867, and #49370.

Change-Id: Ibf4e64addfba18312526968bcf40f1f5d54eb3f1
Reviewed-on: https://go-review.googlesource.com/c/go/+/369815
Reviewed-by: Austin Clements <austin@google.com>
Trust: Michael Knyszek <mknyszek@google.com>
Run-TryBot: Michael Knyszek <mknyszek@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2021-12-07 17:46:04 +00:00
..
android
arm
cgo runtime: fix comments on the behavior of SetGCPercent 2021-12-07 17:46:04 +00:00
chrome/gophertool
ios misc/ios: bump min version 2021-12-02 16:48:07 +00:00
linkcheck
reboot misc/reboot: skip TestRepeatBootstrap on short builders 2021-11-23 16:52:38 +00:00
swig
trace
wasm cmd/link: increase reserved space for passing env on wasm 2021-10-25 20:08:25 +00:00
editors
go.mod cmd/cgo: update to handle ast.IndexListExpr 2021-10-07 18:02:14 +00:00