40 lines
694 B
Go
40 lines
694 B
Go
package libcontainerd
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import (
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"sync"
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)
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// pauseMonitor is helper to get notifications from pause state changes.
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type pauseMonitor struct {
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sync.Mutex
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waiters map[string][]chan struct{}
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}
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func (m *pauseMonitor) handle(t string) {
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m.Lock()
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defer m.Unlock()
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if m.waiters == nil {
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return
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}
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q, ok := m.waiters[t]
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if !ok {
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return
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}
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if len(q) > 0 {
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close(q[0])
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m.waiters[t] = q[1:]
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}
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}
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func (m *pauseMonitor) append(t string, waiter chan struct{}) {
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m.Lock()
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defer m.Unlock()
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if m.waiters == nil {
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m.waiters = make(map[string][]chan struct{})
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}
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_, ok := m.waiters[t]
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if !ok {
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m.waiters[t] = make([]chan struct{}, 0)
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}
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m.waiters[t] = append(m.waiters[t], waiter)
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}
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