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-rw-r--r--src/pkg/sync/once_test.go62
1 files changed, 0 insertions, 62 deletions
diff --git a/src/pkg/sync/once_test.go b/src/pkg/sync/once_test.go
deleted file mode 100644
index 157a3667a..000000000
--- a/src/pkg/sync/once_test.go
+++ /dev/null
@@ -1,62 +0,0 @@
-// Copyright 2009 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package sync_test
-
-import (
- . "sync"
- "sync/atomic"
- "runtime"
- "testing"
-)
-
-type one int
-
-func (o *one) Increment() {
- *o++
-}
-
-func run(once *Once, o *one, c chan bool) {
- once.Do(func() { o.Increment() })
- c <- true
-}
-
-func TestOnce(t *testing.T) {
- o := new(one)
- once := new(Once)
- c := make(chan bool)
- const N = 10
- for i := 0; i < N; i++ {
- go run(once, o, c)
- }
- for i := 0; i < N; i++ {
- <-c
- }
- if *o != 1 {
- t.Errorf("once failed: %d is not 1", *o)
- }
-}
-
-func BenchmarkOnce(b *testing.B) {
- const CallsPerSched = 1000
- procs := runtime.GOMAXPROCS(-1)
- N := int32(b.N / CallsPerSched)
- var once Once
- f := func() {}
- c := make(chan bool, procs)
- for p := 0; p < procs; p++ {
- go func() {
- for atomic.AddInt32(&N, -1) >= 0 {
- runtime.Gosched()
- for g := 0; g < CallsPerSched; g++ {
- once.Do(f)
- }
- }
- c <- true
- }()
- }
- for p := 0; p < procs; p++ {
- <-c
- }
-}