func getWaiterChannel(waiter gate.Waiter) <-chan struct{} {
// If a gate is unlocked, don't select on it.
if waiter.IsUnlocked() {
return nil
}
return waiter.Unlocked()
}
func assertUnlocked(c *gc.C, waiter gate.Waiter) {
c.Assert(waiter.IsUnlocked(), jc.IsTrue)
select {
case <-waiter.Unlocked():
default:
c.Fatalf("expected gate to be unlocked")
}
}
func assertLocked(c *gc.C, waiter gate.Waiter) {
c.Assert(waiter.IsUnlocked(), jc.IsFalse)
select {
case <-waiter.Unlocked():
c.Fatalf("expected gate to be locked")
default:
}
}