hugo/bufferpool/bufpool.go

// Copyright 2015 The Hugo Authors. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

// Package bufferpool provides a pool of bytes buffers.
package bufferpool

import (
	"bytes"
	"sync"
)

var bufferPool = &sync.Pool{
	New: func() interface{} {
		return &bytes.Buffer{}
	},
}

// GetBuffer returns a buffer from the pool.
func GetBuffer() (buf *bytes.Buffer) {
	return bufferPool.Get().(*bytes.Buffer)
}

// PutBuffer returns a buffer to the pool.
// The buffer is reset before it is put back into circulation.
func PutBuffer(buf *bytes.Buffer) {
	buf.Reset()
	bufferPool.Put(buf)
}