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45 lines
933 B
Go
45 lines
933 B
Go
package syncx
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import "sync/atomic"
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// An AtomicBool is an atomic implementation for boolean values.
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type AtomicBool uint32
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// NewAtomicBool returns an AtomicBool.
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func NewAtomicBool() *AtomicBool {
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return new(AtomicBool)
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}
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// ForAtomicBool returns an AtomicBool with given val.
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func ForAtomicBool(val bool) *AtomicBool {
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b := NewAtomicBool()
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b.Set(val)
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return b
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}
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// CompareAndSwap compares current value with given old, if equals, set to given val.
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func (b *AtomicBool) CompareAndSwap(old, val bool) bool {
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var ov, nv uint32
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if old {
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ov = 1
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}
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if val {
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nv = 1
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}
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return atomic.CompareAndSwapUint32((*uint32)(b), ov, nv)
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}
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// Set sets the value to v.
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func (b *AtomicBool) Set(v bool) {
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if v {
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atomic.StoreUint32((*uint32)(b), 1)
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} else {
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atomic.StoreUint32((*uint32)(b), 0)
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}
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}
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// True returns true if current value is true.
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func (b *AtomicBool) True() bool {
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return atomic.LoadUint32((*uint32)(b)) == 1
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}
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