minio/cmd/rpc/pool.go

/*
 * MinIO Cloud Storage, (C) 2018 MinIO, Inc.
 *
 * 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 rpc

import (
	"bytes"
	"sync"
)

// A Pool is a type-safe wrapper around a sync.Pool.
type Pool struct {
	p *sync.Pool
}

// NewPool constructs a new Pool.
func NewPool() Pool {
	return Pool{p: &sync.Pool{
		New: func() interface{} {
			return &bytes.Buffer{}
		},
	}}
}

// Get retrieves a bytes.Buffer from the pool, creating one if necessary.
func (p Pool) Get() *bytes.Buffer {
	buf := p.p.Get().(*bytes.Buffer)
	return buf
}

// Put - returns a bytes.Buffer to the pool.
func (p Pool) Put(buf *bytes.Buffer) {
	buf.Reset()
	p.p.Put(buf)
}