mirror of
https://github.com/golang/go
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97b84fc4c8
It shouldn't semacquire() inside an acquirem(), the runtime
thinks that means deadlock. It actually isn't a deadlock, but it
looks like it because acquirem() does m.locks++.
Candidate for inclusion in 1.4.1. runtime.Stack with all=true
is pretty unuseable in GOMAXPROCS>1 environment.
fixes #9321
Change-Id: Iac6b664217d24763b9878c20e49229a1ecffc805
Reviewed-on: https://go-review.googlesource.com/1600
Reviewed-by: Dmitry Vyukov <dvyukov@google.com>
(cherry picked from commit 50bc3d5bbc)
Reviewed-on: https://go-review.googlesource.com/2807
Reviewed-by: Andrew Gerrand <adg@golang.org>
38 lines
541 B
Go
38 lines
541 B
Go
// run
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// Copyright 2014 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package main
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import (
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"bytes"
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"runtime"
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"runtime/pprof"
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"sync"
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)
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func test() {
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var wg sync.WaitGroup
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wg.Add(2)
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test := func() {
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for i := 0; i < 100; i++ {
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buf := &bytes.Buffer{}
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pprof.Lookup("goroutine").WriteTo(buf, 2)
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}
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wg.Done()
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}
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go test()
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go test()
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wg.Wait()
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}
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func main() {
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runtime.GOMAXPROCS(2)
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for i := 0; i < 100; i++ {
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test()
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}
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}
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