github.com/xushiwei/go@v0.0.0-20130601165731-2b9d83f45bc9/src/pkg/runtime/futex_test.go (about)

     1  // Copyright 2013 The Go Authors.  All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  // +build linux freebsd
     6  
     7  package runtime_test
     8  
     9  import (
    10  	. "runtime"
    11  	"testing"
    12  	"time"
    13  )
    14  
    15  func TestFutexsleep(t *testing.T) {
    16  	ch := make(chan bool, 1)
    17  	var dummy uint32
    18  	start := time.Now()
    19  	go func() {
    20  		Entersyscall()
    21  		Futexsleep(&dummy, 0, (1<<31+100)*1e9)
    22  		Exitsyscall()
    23  		ch <- true
    24  	}()
    25  	select {
    26  	case <-ch:
    27  		t.Errorf("futexsleep finished early after %s!", time.Since(start))
    28  	case <-time.After(time.Second):
    29  		Futexwakeup(&dummy, 1)
    30  	}
    31  }