vcl: support for eventfd mq signaling

[vpp.git] / src / svm / queue.h

diff --git a/src/svm/queue.h b/src/svm/queue.h
index 75e63a4..3e8031e 100644 (file)
--- a/src/svm/queue.h
+++ b/src/svm/queue.h
@@ -81,6 +81,24 @@ int svm_queue_is_full (svm_queue_t * q);
 int svm_queue_add_nolock (svm_queue_t * q, u8 * elem);
 int svm_queue_sub_raw (svm_queue_t * q, u8 * elem);
 
+/**
+ * Wait for queue event
+ *
+ * Must be called with mutex held.
+ */
+void svm_queue_wait (svm_queue_t * q);
+
+/**
+ * Timed wait for queue event
+ *
+ * Must be called with mutex held.
+ *
+ * @param q            svm queue
+ * @param timeout      time in seconds
+ * @return             0 on success, ETIMEDOUT on timeout or an error
+ */
+int svm_queue_timedwait (svm_queue_t * q, double timeout);
+
 /**
  * Add element to queue with mutex held
  * @param q            queue