_sleepon_lock()
Lock a sleepon
Synopsis:
#include <pthread.h>
int _sleepon_lock( sleepon_t * l );
Arguments:
- l
- A pointer to a sleepon_t that you created by calling _sleepon_init().
Library:
libc
Use the -l c option to qcc to link against this library. This library is usually included automatically.
Description:
The _sleepon_lock() function locks the mutex associated with the sleepon structure, l.
You must call this function before calling _sleepon_wait(), _sleepon_signal(), or _sleepon_broadcast().
Returns:
- EOK
- Success.
- EAGAIN
- Insufficient system resources were available to lock the mutex.
- EDEADLK
- The calling thread already owns mutex, and the mutex doesn't allow recursive behavior.
- EINVAL
- Invalid mutex.
The _sleepon_lock() function returns the same values as pthread_mutex_lock().
Classification:
| Safety: | |
|---|---|
| Cancellation point | No |
| Interrupt handler | No |
| Signal handler | No |
| Thread | Yes |
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