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dd0b200aed
The x/net go.mod now depends on go1.23. Change-Id: I24960949d84753f84f75fbdc97b7dfb92191a4d2 Reviewed-on: https://go-review.googlesource.com/c/net/+/664295 LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Jonathan Amsterdam <jba@google.com> Auto-Submit: Damien Neil <dneil@google.com>
32 lines
714 B
Go
32 lines
714 B
Go
// Copyright 2023 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package quic
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import "sync/atomic"
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// atomicBits is an atomic uint32 that supports setting individual bits.
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type atomicBits[T ~uint32] struct {
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bits atomic.Uint32
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}
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// set sets the bits in mask to the corresponding bits in v.
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// It returns the new value.
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func (a *atomicBits[T]) set(v, mask T) T {
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if v&^mask != 0 {
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panic("BUG: bits in v are not in mask")
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}
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for {
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o := a.bits.Load()
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n := (o &^ uint32(mask)) | uint32(v)
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if a.bits.CompareAndSwap(o, n) {
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return T(n)
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}
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}
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}
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func (a *atomicBits[T]) load() T {
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return T(a.bits.Load())
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}
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