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b067ad939d
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Austin Clements b067ad939d runtime: record mutex event before readying 
Currently, semrelease1 readies the next waiter before recording a
mutex event. However, if the next waiter is expecting to look at the
mutex profile, as is the case in TestMutexProfile, this may delay
recording the event too much.

Swap the order of these operations so semrelease1 records the mutex
event before readying the next waiter. This also means readying the
next waiter is the very last thing semrelease1 does, which seems
appropriate.

Fixes #19139.

Change-Id: I1a62063599fdb5d49bd86061a180c0a2d659474b
Reviewed-on: https://go-review.googlesource.com/45751
Run-TryBot: Austin Clements <austin@google.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Peter Weinberger <pjw@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2017-06-14 16:07:58 +00:00
.github doc: improve issue template and contribution guidelines 2017-02-11 20:42:06 +00:00
api api: update next.txt 2017-05-02 19:34:49 +00:00
doc doc: add more Go 1.9 notes 2017-06-14 05:49:46 +00:00
lib/time time: vendor tzdata-2017b and update test 2017-06-07 21:23:58 +00:00
misc go/build: make -I/-L options in cgo flags absolute 2017-06-13 18:36:04 +00:00
src runtime: record mutex event before readying 2017-06-14 16:07:58 +00:00
test cmd/compile: don't use ."" as a pkg prefix 2017-06-09 16:13:52 +00:00
.gitattributes
.gitignore .gitignore: change path to zbootstrap.go 2017-04-19 02:13:58 +00:00
AUTHORS A+C: automated update 2016-12-21 03:22:22 +00:00
CONTRIBUTING.md doc: improve issue template and contribution guidelines 2017-02-11 20:42:06 +00:00
CONTRIBUTORS C: add Filippo Valsorda's cloudflare.com email (Cloudflare CLA) 2017-06-02 20:41:51 +00:00
favicon.ico website: recreate 16px and 32px favicon 2016-08-25 15:43:32 +00:00
LICENSE doc: revert copyright date to 2009 2016-06-01 22:40:04 +00:00
PATENTS
README.md readme: add attribution for the Gopher image 2017-02-03 19:39:41 +00:00
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README.md

The Go Programming Language

Go is an open source programming language that makes it easy to build simple, reliable, and efficient software.

Gopher image Gopher image by Renee French, licensed under Creative Commons 3.0 Attributions license.

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Note that the Go project does not use GitHub pull requests, and that we use the issue tracker for bug reports and proposals only. See https://golang.org/wiki/Questions for a list of places to ask questions about the Go language.