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33 lines
838 B
33 lines
838 B
package sync
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import "sync/atomic"
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// AtomicBool is an atomic Boolean.
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// Its methods are all atomic, thus safe to be called by multiple goroutines simultaneously.
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// Note: When embedding into a struct one should always use *AtomicBool to avoid copy.
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// it's a simple implmentation from https://github.com/tevino/abool
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type AtomicBool int32
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// NewBool creates an AtomicBool with given default value.
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func NewBool(ok bool) *AtomicBool {
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ab := new(AtomicBool)
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if ok {
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ab.Set()
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}
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return ab
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}
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// Set sets the Boolean to true.
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func (ab *AtomicBool) Set() {
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atomic.StoreInt32((*int32)(ab), 1)
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}
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// UnSet sets the Boolean to false.
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func (ab *AtomicBool) UnSet() {
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atomic.StoreInt32((*int32)(ab), 0)
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}
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// IsSet returns whether the Boolean is true.
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func (ab *AtomicBool) IsSet() bool {
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return atomic.LoadInt32((*int32)(ab))&1 == 1
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}
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