59 lines
1.9 KiB
Go
59 lines
1.9 KiB
Go
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// Copyright (c) 2023 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 pool provides internal pool utilities.
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package pool
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import (
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"sync"
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)
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// A Pool is a generic wrapper around [sync.Pool] to provide strongly-typed
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// object pooling.
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//
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// Note that SA6002 (ref: https://staticcheck.io/docs/checks/#SA6002) will
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// not be detected, so all internal pool use must take care to only store
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// pointer types.
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type Pool[T any] struct {
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pool sync.Pool
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}
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// New returns a new [Pool] for T, and will use fn to construct new Ts when
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// the pool is empty.
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func New[T any](fn func() T) *Pool[T] {
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return &Pool[T]{
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pool: sync.Pool{
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New: func() any {
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return fn()
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},
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},
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}
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}
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// Get gets a T from the pool, or creates a new one if the pool is empty.
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func (p *Pool[T]) Get() T {
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return p.pool.Get().(T)
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}
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// Put returns x into the pool.
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func (p *Pool[T]) Put(x T) {
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p.pool.Put(x)
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}
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