diff options
| author |   Florin Coras <fcoras@cisco.com> | 2021-03-25 11:24:33 -0700 |
|---|---|---|
| committer |   Dave Barach <openvpp@barachs.net> | 2021-03-25 23:50:14 +0000 |
| commit | 89c98a4bff101ad4270724bde7ca6f21ba4c8482 (patch) | |
| tree | 95178e327777d4112e6034ebcf18bab7a0fd1001 /src/svm/message_queue.c | |
| parent | 22af286a2976339b25e11c23ac273e1781138fb7 (diff) | |
svm: add producer wait function
Type: refactor
Signed-off-by: Florin Coras <fcoras@cisco.com>
Change-Id: I9488ad7e045c908b60b5821d9c48583f6d513c2f
Diffstat (limited to 'src/svm/message_queue.c')
| -rw-r--r-- | src/svm/message_queue.c | 47 |
1 files changed, 36 insertions, 11 deletions
diff --git a/src/svm/message_queue.c b/src/svm/message_queue.c index 3163d302967..5c04b19e64c 100644 --- a/src/svm/message_queue.c +++ b/src/svm/message_queue.c @@ -247,7 +247,7 @@ svm_msg_q_lock_and_alloc_msg_w_ring (svm_msg_q_t * mq, u32 ring_index, svm_msg_q_lock (mq); while (svm_msg_q_is_full (mq) || svm_msg_q_ring_is_full (mq, ring_index)) - svm_msg_q_wait (mq, SVM_MQ_WAIT_FULL); + svm_msg_q_wait_prod (mq); *msg = svm_msg_q_alloc_msg_w_ring (mq, ring_index); } return 0; @@ -371,7 +371,7 @@ svm_msg_q_add (svm_msg_q_t * mq, svm_msg_q_msg_t * msg, int nowait) if (nowait) return (-2); while (svm_msg_q_is_full (mq)) - svm_msg_q_wait (mq, SVM_MQ_WAIT_FULL); + svm_msg_q_wait_prod (mq); } svm_msg_q_add_raw (mq, (u8 *) msg); @@ -498,21 +498,17 @@ svm_msg_q_wait (svm_msg_q_t *mq, svm_msg_q_wait_type_t type) if (mq->q.evtfd == -1) { - if (type == SVM_MQ_WAIT_EMPTY) + rv = pthread_mutex_lock (&mq->q.shr->mutex); + if (PREDICT_FALSE (rv == EOWNERDEAD)) { - rv = pthread_mutex_lock (&mq->q.shr->mutex); - if (PREDICT_FALSE (rv == EOWNERDEAD)) - { - rv = pthread_mutex_consistent (&mq->q.shr->mutex); - return rv; - } + rv = pthread_mutex_consistent (&mq->q.shr->mutex); + return rv; } while (fn (mq)) pthread_cond_wait (&mq->q.shr->condvar, &mq->q.shr->mutex); - if (type == SVM_MQ_WAIT_EMPTY) - pthread_mutex_unlock (&mq->q.shr->mutex); + pthread_mutex_unlock (&mq->q.shr->mutex); } else { @@ -535,6 +531,35 @@ svm_msg_q_wait (svm_msg_q_t *mq, svm_msg_q_wait_type_t type) } int +svm_msg_q_wait_prod (svm_msg_q_t *mq) +{ + if (mq->q.evtfd == -1) + { + while (svm_msg_q_is_full (mq)) + pthread_cond_wait (&mq->q.shr->condvar, &mq->q.shr->mutex); + } + else + { + u64 buf; + int rv; + + while (svm_msg_q_is_full (mq)) + { + while ((rv = read (mq->q.evtfd, &buf, sizeof (buf))) < 0) + { + if (errno != EAGAIN) + { + clib_unix_warning ("read error"); + return rv; + } + } + } + } + + return 0; +} + +int svm_msg_q_timedwait (svm_msg_q_t *mq, double timeout) { if (mq->q.evtfd == -1) |