mirror of
https://github.com/prometheus/prometheus.git
synced 2024-11-11 08:04:04 -08:00
47 lines
1.1 KiB
Go
47 lines
1.1 KiB
Go
|
// Copyright 2013 Prometheus Team
|
||
|
|
// 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 leveldb
|
||
|
|
|
||
|
|
import (
|
||
|
|
"github.com/prometheus/prometheus/utility"
|
||
|
|
|
||
|
|
"code.google.com/p/goprotobuf/proto"
|
||
|
|
)
|
||
|
|
|
||
|
|
var buffers = newBufferList(50)
|
||
|
|
|
||
|
|
type bufferList struct {
|
||
|
|
l utility.FreeList
|
||
|
|
}
|
||
|
|
|
||
|
|
func (l *bufferList) Get() (*proto.Buffer, bool) {
|
||
|
|
if v, ok := l.l.Get(); ok {
|
||
|
|
return v.(*proto.Buffer), ok
|
||
|
|
}
|
||
|
|
|
||
|
|
return proto.NewBuffer(make([]byte, 0, 4096)), false
|
||
|
|
}
|
||
|
|
|
||
|
|
func (l *bufferList) Give(v *proto.Buffer) bool {
|
||
|
|
v.Reset()
|
||
|
|
|
||
|
|
return l.l.Give(v)
|
||
|
|
}
|
||
|
|
|
||
|
|
func newBufferList(cap int) *bufferList {
|
||
|
|
return &bufferList{
|
||
|
|
l: utility.NewFreeList(cap),
|
||
|
|
}
|
||
|
|
}
|