frp/utils/pool/snappy.go

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// Copyright 2017 fatedier, fatedier@gmail.com
//
// 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 pool
import (
"io"
"sync"
"github.com/golang/snappy"
)
var (
snappyReaderPool sync.Pool
snappyWriterPool sync.Pool
)
func GetSnappyReader(r io.Reader) *snappy.Reader {
var x interface{}
x = snappyReaderPool.Get()
if x == nil {
return snappy.NewReader(r)
}
sr := x.(*snappy.Reader)
sr.Reset(r)
return sr
}
func PutSnappyReader(sr *snappy.Reader) {
snappyReaderPool.Put(sr)
}
func GetSnappyWriter(w io.Writer) *snappy.Writer {
var x interface{}
x = snappyWriterPool.Get()
if x == nil {
return snappy.NewWriter(w)
}
sw := x.(*snappy.Writer)
sw.Reset(w)
return sw
}
func PutSnappyWriter(sw *snappy.Writer) {
snappyWriterPool.Put(sw)
}