mtx_trylock()
QNX SDP8.0C Library ReferenceAPIDeveloper
Attempt to lock a mutex
Synopsis:
#include <threads.h>
int mtx_trylock( mtx_t *mutex );
Arguments:
- mutex
- A pointer to the mtx_t object that you want to try to lock.
Library:
libc
Use the -l c option to qcc to link against this library. This library is usually included automatically.
Description:
The mtx_trylock() function attempts to lock the mutex mutex, but doesn't block the calling thread if the mutex is already locked.
Returns:
- thrd_success
- Success.
- thrd_busy
- The mutex was already locked.
- thrd_error
- An error occurred.
Classification:
| Safety: | |
|---|---|
| Cancellation point | No |
| Signal handler | Yes |
| Thread | Yes |
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