X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Fcommon%2Fwaiter.hpp;h=8ea0c2d83f450ad7ff6da749f57e6e0424c68e13;hp=d88fe0f66af96a1029afe019e925fb6d2cb7d809;hb=f40b76aed659ff694cf948bf8ebd1d4b5741c986;hpb=a968a9e069d76bfb1ac416dc834994c6a82b085e

diff --git a/src/common/waiter.hpp b/src/common/waiter.hpp
index d88fe0f66..8ea0c2d83 100644
--- a/src/common/waiter.hpp
+++ b/src/common/waiter.hpp
@@ -23,15 +23,33 @@ struct lttng_waiter {
 	int32_t state;
 };
 
+struct lttng_wait_queue {
+	struct cds_wfs_stack stack;
+};
+
 void lttng_waiter_init(struct lttng_waiter *waiter);
 
 void lttng_waiter_wait(struct lttng_waiter *waiter);
 
 /*
- * lttng_waiter_wake_up must only be called by a single waker.
+ * lttng_waiter_wake must only be called by a single waker.
  * It is invalid for multiple "wake" operations to be invoked
  * on a single waiter without re-initializing it before.
  */
-void lttng_waiter_wake_up(struct lttng_waiter *waiter);
+void lttng_waiter_wake(struct lttng_waiter *waiter);
+
+void lttng_wait_queue_init(struct lttng_wait_queue *queue);
+
+/*
+ * Atomically add a waiter to a wait queue.
+ * A full memory barrier is issued before being added to the wait queue.
+ */
+void lttng_wait_queue_add(struct lttng_wait_queue *queue, struct lttng_waiter *waiter);
+
+/*
+ * Wake every waiter present in the wait queue and remove them from
+ * the queue.
+ */
+void lttng_wait_queue_wake_all(struct lttng_wait_queue *queue);
 
 #endif /* LTTNG_WAITER_H */