64 lines
1.9 KiB
Go
64 lines
1.9 KiB
Go
// Copyright (c) 2019 Uber Technologies, Inc.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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package tally
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// ObjectPool is an minimalistic object pool to avoid
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// any circular dependencies on any other object pool.
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type ObjectPool struct {
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values chan interface{}
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alloc func() interface{}
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}
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// NewObjectPool creates a new pool.
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func NewObjectPool(size int) *ObjectPool {
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return &ObjectPool{
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values: make(chan interface{}, size),
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}
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}
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// Init initializes the object pool.
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func (p *ObjectPool) Init(alloc func() interface{}) {
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p.alloc = alloc
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for i := 0; i < cap(p.values); i++ {
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p.values <- p.alloc()
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}
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}
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// Get gets an object from the pool.
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func (p *ObjectPool) Get() interface{} {
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var v interface{}
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select {
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case v = <-p.values:
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default:
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v = p.alloc()
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}
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return v
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}
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// Put puts an object back to the pool.
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func (p *ObjectPool) Put(obj interface{}) {
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select {
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case p.values <- obj:
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default:
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}
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}
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