From: Dmitriy Vyukov <dvyukov@google.com>
Date: Wed, 22 Jun 2011 20:20:37 +0000 (-0400)
Subject: sync: restore GOMAXPROCS during benchmarks
X-Git-Tag: weekly.2011-06-23~20
X-Git-Url: http://www.git.cypherpunks.su/?a=commitdiff_plain;h=8cab7f570395ba07b732a935fc1c916d28f8b7ef;p=gostls13.git

sync: restore GOMAXPROCS during benchmarks

R=golang-dev
CC=dvyukov, golang-dev
https://golang.org/cl/4631060
---

diff --git a/src/pkg/sync/mutex_test.go b/src/pkg/sync/mutex_test.go
index f5c20ca49b..9bfdec365f 100644
--- a/src/pkg/sync/mutex_test.go
+++ b/src/pkg/sync/mutex_test.go
@@ -43,7 +43,7 @@ func BenchmarkContendedSemaphore(b *testing.B) {
 	s := new(uint32)
 	*s = 1
 	c := make(chan bool)
-	runtime.GOMAXPROCS(2)
+	defer runtime.GOMAXPROCS(runtime.GOMAXPROCS(2))
 	b.StartTimer()
 
 	go HammerSemaphore(s, b.N/2, c)
@@ -81,7 +81,7 @@ func BenchmarkContendedMutex(b *testing.B) {
 	b.StopTimer()
 	m := new(Mutex)
 	c := make(chan bool)
-	runtime.GOMAXPROCS(2)
+	defer runtime.GOMAXPROCS(runtime.GOMAXPROCS(2))
 	b.StartTimer()
 
 	go HammerMutex(m, b.N/2, c)