Lines Matching defs:waiter

25   // |m|, a new waiter object is added to the waiter queue with
26   // the waiter queue locked. Iff a signalling thread signals
27   // the waiter before the waiter actually starts waiting, the
28   // wait operation will not begin at all and the waiter immediately
31   CndWaiter waiter;
36       waitq_front = waitq_back = &waiter;
39       waitq_back->next = &waiter;
40       waitq_back = &waiter;
44       // If we do not remove the queued up waiter before returning,
46       // waiter. Note also that we do this with |qmtx| locked. This
48       // waiter.
59   waiter.futex_word.wait(WS_Waiting, cpp::nullopt, true);
62   // queued up waiter would have been removed from the queue.
69   // |qmtx| and signal the waiter using a single FUTEX_WAKE_OP signal.
91   CndWaiter *waiter = waitq_front;
93   while (waiter != nullptr) {
95     // atomically update the waiter status to WS_Signalled before waking
96     // up the waiter. A dummy location is used for the other futex of
100         &waiter->futex_word.val,
102     waiter = waiter->next;