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net: fix race in test

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Fixes race builders, broken in https://golang.org/cl/16953

Change-Id: Id61171672b69d0ca412de4b44bf2c598fe557906
Reviewed-on: https://go-review.googlesource.com/17936
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>
This commit is contained in:
Brad Fitzpatrick 2015-12-17 16:50:03 +00:00
parent 0d641c754f
commit 3ad3d5931b
1 changed files with 8 additions and 2 deletions
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8
src/net/dnsclient_unix_test.go
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@ -515,6 +515,7 @@ func BenchmarkGoLookupIPWithBrokenNameServer(b *testing.B) {
type fakeDNSConn struct {
// last query
qmu sync.Mutex // guards q
q *dnsMsg
// reply handler
rh func(*dnsMsg) (*dnsMsg, error)
@ -533,10 +534,15 @@ func (f *fakeDNSConn) SetDeadline(time.Time) error {
}
func (f *fakeDNSConn) writeDNSQuery(q *dnsMsg) error {
f.qmu.Lock()
defer f.qmu.Unlock()
f.q = q
return nil
}
func (f *fakeDNSConn) readDNSResponse() (*dnsMsg, error) {
return f.rh(f.q)
f.qmu.Lock()
q := f.q
f.qmu.Unlock()
return f.rh(q)
}