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arikawa/internal/moreatomic/bool.go

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package moreatomic
import "sync/atomic"
type Bool struct {
val uint32
}
func (b *Bool) Get() bool {
return atomic.LoadUint32(&b.val) > 0
}
func (b *Bool) Set(val bool) {
var x = uint32(0)
if val {
x = 1
}
atomic.StoreUint32(&b.val, x)
}
func (b *Bool) SetTrue() {
atomic.StoreUint32(&b.val, 1)
}
func (b *Bool) SetFalse() {
atomic.StoreUint32(&b.val, 0)
}
// Acquire sets bool to true if it's false and returns true, otherwise returns
// false.
func (b *Bool) Acquire() bool {
return atomic.CompareAndSwapUint32(&b.val, 0, 1)
}