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Manually unlock the mutex in ClientMap.SendQueue.

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Rather than use defer. It is only a tiny amount faster, but this
function is frequently called.

Before:
	$ go test -bench=BenchmarkSendQueue -benchtime=2s
	BenchmarkSendQueue-4    15901834               151 ns/op
After:
	$ go test -bench=BenchmarkSendQueue -benchtime=2s
	BenchmarkSendQueue-4    15859948               147 ns/op

https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/snowflake/-/issues/40177
This commit is contained in:
David Fifield 2022-09-24 10:05:17 -06:00
parent 8e5af50bdb
commit 64491466ce
2 changed files with 21 additions and 2 deletions
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5
common/turbotunnel/clientmap.go
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@ -57,8 +57,9 @@ func NewClientMap(timeout time.Duration) *ClientMap {
// necessary.
func (m *ClientMap) SendQueue(addr net.Addr) chan []byte {
m.lock.Lock()
defer m.lock.Unlock()
return m.inner.SendQueue(addr, time.Now())
queue := m.inner.SendQueue(addr, time.Now())
m.lock.Unlock()
return queue
}
// clientMapInner is the inner type of ClientMap, implementing heap.Interface.