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