// Copyright 2016 The Prometheus Authors
// 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 prometheus

import (
	"bytes"
	"sync"
)

var bufPool sync.Pool

func getBuf() *bytes.Buffer {
	buf := bufPool.Get()
	if buf == nil {
		return &bytes.Buffer{}
	}
	return buf.(*bytes.Buffer)
}

func giveBuf(buf *bytes.Buffer) {
	buf.Reset()
	bufPool.Put(buf)
}