| commit | c85b12b5796c7efd4d8311253208b47449161361 | [log] [tgz] |
|---|---|---|
| author | Austin Clements <austin@google.com> | Wed Jun 14 11:46:35 2017 -0400 |
| committer | Austin Clements <austin@google.com> | Thu Oct 05 19:50:23 2017 +0000 |
| tree | 71a145548a3253df3545e3206f5b2f0535f98f0c | |
| parent | 555c16d8cbd8372c1f57beb059a23b56bf1e909f [diff] |
runtime: make LockOSThread/UnlockOSThread nested Currently, there is a single bit for LockOSThread, so two calls to LockOSThread followed by one call to UnlockOSThread will unlock the thread. There's evidence (#20458) that this is almost never what people want or expect and it makes these APIs very hard to use correctly or reliably. Change this so LockOSThread/UnlockOSThread can be nested and the calling goroutine will not be unwired until UnlockOSThread has been called as many times as LockOSThread has. This should fix the vast majority of incorrect uses while having no effect on the vast majority of correct uses. Fixes #20458. Change-Id: I1464e5e9a0ea4208fbb83638ee9847f929a2bacb Reviewed-on: https://go-review.googlesource.com/45752 Run-TryBot: Austin Clements <austin@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Keith Randall <khr@golang.org>
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