26 lines
525 B
Go
26 lines
525 B
Go
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package h2mux
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import "sync/atomic"
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// BooleanFuse is a data structure that can be set once to a particular value using Fuse(value).
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// Subsequent calls to Fuse() will have no effect.
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type BooleanFuse struct {
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value int32
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}
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// Value gets the value
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func (f *BooleanFuse) Value() bool {
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// 0: unset
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// 1: set true
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// 2: set false
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return atomic.LoadInt32(&f.value) == 1
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}
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func (f *BooleanFuse) Fuse(result bool) {
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newValue := int32(2)
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if result {
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newValue = 1
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}
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atomic.CompareAndSwapInt32(&f.value, 0, newValue)
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}
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