Functions | |
void | os_semaphore_init (os_semaphore_t *sem) |
void | os_semaphore_destroy (os_semaphore_t *sem) |
void | os_semaphore_wait (os_semaphore_t *sem) |
int | os_semaphore_wait_timed (os_semaphore_t *sem, int time_ms) |
void | os_semaphore_post (os_semaphore_t *sem) |
void os_semaphore_destroy | ( | os_semaphore_t * | sem | ) |
Destroy a semaphore.
Destroy a semaphore previously initialized with os_semaphore_init(), freeing any associated resources.
Callable from: thread context.
sem | semaphore to destroy |
void os_semaphore_init | ( | os_semaphore_t * | sem | ) |
Initialize a semaphore to zero.
Callable from: thread context.
sem | semaphore to initialize. |
void os_semaphore_post | ( | os_semaphore_t * | sem | ) |
Post an event to a semaphore, waking at least one of the threads waiting on it.
Callable from: any context.
sem | semaphore to post to. |
void os_semaphore_wait | ( | os_semaphore_t * | sem | ) |
Wait for an event to be posted to the semaphore.
Callable from: thread context.
sem | semaphore to wait on. |
int os_semaphore_wait_timed | ( | os_semaphore_t * | sem, | |
int | time_ms | |||
) |
Wait for an event to be posted to the semaphore, or some time has elapsed.
Callable from: thread context.
sem | semaphore to wait on | |
time_ms | maximum time to wait (in ms). |
-ETIMEDOUT if the maximum time to wait was exceeded.