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undo CL 13348045 / 43675523c526

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There is no reason to do this, and it's more work.

««« original CL description
net: make channel-based semaphore depend on receive, not send

R=r, dvyukov
CC=golang-dev
https://golang.org/cl/13348045

»»»

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/13632047
This commit is contained in:
Russ Cox 2013-09-11 20:29:22 -04:00 committed by Rob Pike
parent 7f6a7e22a8
commit bab302dea2
1 changed files with 5 additions and 7 deletions
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12
src/pkg/net/net.go
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@ -408,16 +408,14 @@ func genericReadFrom(w io.Writer, r io.Reader) (n int64, err error) {
var threadLimit = make(chan struct{}, 500)
func init() {
for i := 0; i < cap(threadLimit); i++ {
threadLimit <- struct{}{}
}
}
// Using send for acquire is fine here because we are not using this
// to protect any memory. All we care about is the number of goroutines
// making calls at a time.
func acquireThread() {
<-threadLimit
threadLimit <- struct{}{}
}
func releaseThread() {
threadLimit <- struct{}{}
<-threadLimit
}