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