43 lines
661 B
Go
43 lines
661 B
Go
package internal
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import "sync"
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type broadcaster struct {
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clients map[chan bool]bool
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mu sync.RWMutex
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}
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func newBroadcaster() *broadcaster {
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return &broadcaster{
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clients: make(map[chan bool]bool),
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}
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}
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func (b *broadcaster) subscribe() chan bool {
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b.mu.Lock()
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defer b.mu.Unlock()
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ch := make(chan bool, 10)
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b.clients[ch] = true
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return ch
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}
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func (b *broadcaster) unsubscribe(ch chan bool) {
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b.mu.Lock()
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defer b.mu.Unlock()
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delete(b.clients, ch)
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close(ch)
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}
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func (b *broadcaster) broadcast() {
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b.mu.RLock()
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defer b.mu.RUnlock()
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for ch := range b.clients {
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select {
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case ch <- true:
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default:
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}
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}
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}
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var updates = newBroadcaster()
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