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32 lines
707 B
Go
32 lines
707 B
Go
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// Copyright (c) Tailscale Inc & AUTHORS
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// SPDX-License-Identifier: BSD-3-Clause
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package syncs
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import "sync"
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// Pool is the generic version of [sync.Pool].
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type Pool[T any] struct {
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pool sync.Pool
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// New optionally specifies a function to generate
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// a value when Get would otherwise return the zero value of T.
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// It may not be changed concurrently with calls to Get.
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New func() T
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}
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// Get selects an arbitrary item from the Pool, removes it from the Pool,
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// and returns it to the caller. See [sync.Pool.Get].
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func (p *Pool[T]) Get() T {
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x, ok := p.pool.Get().(T)
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if !ok && p.New != nil {
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x = p.New()
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}
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return x
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}
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// Put adds x to 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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