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20 lines
216 B
Go
20 lines
216 B
Go
package concurrent
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import (
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"sync"
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"unsafe"
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)
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type (
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Once sync.Once
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)
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func (o *Once) Do(f func()) {
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(*sync.Once)(o).Do(f)
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}
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func (o *Once) IsDone() bool {
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i := *(*uint32)(unsafe.Pointer(o))
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return i != 0
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}
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