status-go/vendor/go.uber.org/atomic/bool_ext.go

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// Copyright (c) 2020 Uber Technologies, Inc.
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//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
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package atomic
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import (
"strconv"
)
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//go:generate bin/gen-atomicwrapper -name=Bool -type=bool -wrapped=Uint32 -pack=boolToInt -unpack=truthy -cas -swap -json -file=bool.go
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func truthy(n uint32) bool {
return n == 1
}
func boolToInt(b bool) uint32 {
if b {
return 1
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}
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return 0
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}
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// Toggle atomically negates the Boolean and returns the previous value.
func (b *Bool) Toggle() (old bool) {
for {
old := b.Load()
if b.CAS(old, !old) {
return old
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}
}
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}
// String encodes the wrapped value as a string.
func (b *Bool) String() string {
return strconv.FormatBool(b.Load())
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}