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bytes_buf.go
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bytes_buf.go
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// Copyright (C) 2020-2021, IrineSistiana
//
// This file is part of mosdns.
//
// mosdns is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// mosdns is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.
package pool
import (
"bytes"
"fmt"
"sync"
)
type BytesBufPool struct {
p sync.Pool
}
func NewBytesBufPool(initSize int) *BytesBufPool {
if initSize < 0 {
panic(fmt.Sprintf("utils.NewBytesBufPool: negative init size %d", initSize))
}
return &BytesBufPool{
p: sync.Pool{New: func() interface{} {
b := new(bytes.Buffer)
b.Grow(initSize)
return b
}},
}
}
func (p *BytesBufPool) Get() *bytes.Buffer {
return p.p.Get().(*bytes.Buffer)
}
func (p *BytesBufPool) Release(b *bytes.Buffer) {
b.Reset()
p.p.Put(b)
}