From 89c98a4bff101ad4270724bde7ca6f21ba4c8482 Mon Sep 17 00:00:00 2001 From: Florin Coras Date: Thu, 25 Mar 2021 11:24:33 -0700 Subject: svm: add producer wait function Type: refactor Signed-off-by: Florin Coras Change-Id: I9488ad7e045c908b60b5821d9c48583f6d513c2f --- src/svm/message_queue.h | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) (limited to 'src/svm/message_queue.h') diff --git a/src/svm/message_queue.h b/src/svm/message_queue.h index 1ef773d9f0a..0e402c5a409 100644 --- a/src/svm/message_queue.h +++ b/src/svm/message_queue.h @@ -399,11 +399,19 @@ svm_msg_q_unlock (svm_msg_q_t * mq) /** * Wait for message queue event * - * Must be called with mutex held. The queue only works non-blocking - * with eventfds, so handle blocking calls as an exception here. + * When eventfds are not configured, the shared memory mutex is locked + * before waiting on the condvar. Typically called by consumers. */ int svm_msg_q_wait (svm_msg_q_t *mq, svm_msg_q_wait_type_t type); +/** + * Wait for message queue event as producer + * + * Similar to @ref svm_msg_q_wait but lock (mutex or spinlock) must + * be held. Should only be called by producers. + */ +int svm_msg_q_wait_prod (svm_msg_q_t *mq); + /** * Timed wait for message queue event * -- cgit 1.2.3-korg