diff options
Diffstat (limited to 'include/asterisk/sem.h')
| -rw-r--r-- | include/asterisk/sem.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/include/asterisk/sem.h b/include/asterisk/sem.h index 8f6356c01..6d655d63e 100644 --- a/include/asterisk/sem.h +++ b/include/asterisk/sem.h @@ -59,6 +59,11 @@ static force_inline int ast_sem_wait(struct ast_sem *sem) return sem_wait(&sem->real_sem); } +static force_inline int ast_sem_timedwait(struct ast_sem *sem, const struct timespec *abs_timeout) +{ + return sem_timedwait(&sem->real_sem, abs_timeout); +} + static force_inline int ast_sem_getvalue(struct ast_sem *sem, int *sval) { return sem_getvalue(&sem->real_sem, sval); @@ -137,6 +142,20 @@ int ast_sem_post(struct ast_sem *sem); int ast_sem_wait(struct ast_sem *sem); /*! + * \brief Decrements the semaphore, waiting until abs_timeout. + * + * If the semaphore's current value is zero, this function blocks until another + * thread posts (ast_sem_post()) to the semaphore (or is interrupted by a signal + * handler, which sets errno to EINTR). + * + * \param sem Semaphore to decrement. + * + * \return 0 on success. + * \return -1 on error, errno set to indicate error. + */ +int ast_sem_timedwait(struct ast_sem *sem, const struct timespec *abs_timeout); + +/*! * \brief Gets the current value of the semaphore. * * If threads are blocked on this semaphore, POSIX allows the return value to be |