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0015e88447
* pauseThreshold in AsyncBuffer * Additional close() condition * io.ReadCloser in buffer * ticker + fixes * Minor fixes for asyncbuffer * Renamed ticker to cond * warn if close of upstream reader failed * ticker -> chunkCond * Fix io.EOF behaviour
27 lines
465 B
Go
27 lines
465 B
Go
package asyncbuffer
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import (
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"sync"
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)
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// Latch is once-releasing semaphore.
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type Latch struct {
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once sync.Once
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done chan struct{}
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}
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// NewLatch creates a new Latch.
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func NewLatch() *Latch {
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return &Latch{done: make(chan struct{})}
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}
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// Release releases the latch, allowing all waiting goroutines to proceed.
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func (g *Latch) Release() {
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g.once.Do(func() { close(g.done) })
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}
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// Wait blocks until the latch is released.
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func (g *Latch) Wait() {
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<-g.done
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}
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