// Copyright 2016 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 sync_test
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import (
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"bytes"
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"io"
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"os"
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"sync"
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"time"
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)
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var bufPool = sync.Pool{
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New: func() interface{} {
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// The Pool's New function should generally only return pointer
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// types, since a pointer can be put into the return interface
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// value without an allocation:
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return new(bytes.Buffer)
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},
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}
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// timeNow is a fake version of time.Now for tests.
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func timeNow() time.Time {
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return time.Unix(1136214245, 0)
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}
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func Log(w io.Writer, key, val string) {
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b := bufPool.Get().(*bytes.Buffer)
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b.Reset()
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// Replace this with time.Now() in a real logger.
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b.WriteString(timeNow().UTC().Format(time.RFC3339))
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b.WriteByte(' ')
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b.WriteString(key)
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b.WriteByte('=')
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b.WriteString(val)
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w.Write(b.Bytes())
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bufPool.Put(b)
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}
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func ExamplePool() {
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Log(os.Stdout, "path", "/search?q=flowers")
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// Output: 2006-01-02T15:04:05Z path=/search?q=flowers
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}
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