diff options
Diffstat (limited to 'src/core/msgqueue.h')
| -rw-r--r-- | src/core/msgqueue.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/core/msgqueue.h b/src/core/msgqueue.h index 5efbc245..900fed2b 100644 --- a/src/core/msgqueue.h +++ b/src/core/msgqueue.h @@ -45,6 +45,12 @@ extern void nni_msgqueue_destroy(nni_msgqueue *); // the caller is not permitted to access it further. extern int nni_msgqueue_put(nni_msgqueue *, nni_msg *); +// nni_msgqueue_putback returns a message to the head of the queue. +// This is a non-blocking operation, and it returns EAGAIN if there +// is no room. There is always at least room for one putback after +// a message is retried with nni_msgqueue_get. +extern int nni_msgqueue_putback(nni_msgqueue *, nni_msg *); + // nni_msgqueue_get gets the message from the queue. It blocks until a // message is available, or the queue is closed, returning either 0 on // success or NNG_ECLOSED if the queue was closed. If a message is |