Mercurial > dwindows
comparison gtk/dw.c @ 1158:f86f556ff29d
Added dw_mutex_trylock() that functions like dw_mutex_lock() except
it does not block if the mutex is already locked, it instead returns
DW_MUTEX_TIMEOUT. Allowing threads to continue to do work while
waiting to obtain a mutex.
| author | bsmith@81767d24-ef19-dc11-ae90-00e081727c95 |
|---|---|
| date | Thu, 15 Sep 2011 21:13:59 +0000 |
| parents | 03b6d9fdfac0 |
| children | 924c8087a755 |
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| 1157:79bd0aff0bc2 | 1158:f86f556ff29d |
|---|---|
| 8519 if(pthread_self() == _dw_thread) | 8519 if(pthread_self() == _dw_thread) |
| 8520 gdk_threads_enter(); | 8520 gdk_threads_enter(); |
| 8521 } | 8521 } |
| 8522 | 8522 |
| 8523 /* | 8523 /* |
| 8524 * Tries to gain access to the semaphore. | |
| 8525 * Parameters: | |
| 8526 * mutex: The handle to the mutex returned by dw_mutex_new(). | |
| 8527 * Returns: | |
| 8528 * DW_ERROR_NONE on success, DW_ERROR_TIMEOUT if it is already locked. | |
| 8529 */ | |
| 8530 int API dw_mutex_trylock(HMTX mutex) | |
| 8531 { | |
| 8532 if(pthread_mutex_trylock(mutex) == 0) | |
| 8533 return DW_ERROR_NONE; | |
| 8534 return DW_ERROR_TIMEOUT; | |
| 8535 } | |
| 8536 | |
| 8537 /* | |
| 8524 * Reliquishes the access to the semaphore. | 8538 * Reliquishes the access to the semaphore. |
| 8525 * Parameters: | 8539 * Parameters: |
| 8526 * mutex: The handle to the mutex returned by dw_mutex_new(). | 8540 * mutex: The handle to the mutex returned by dw_mutex_new(). |
| 8527 */ | 8541 */ |
| 8528 void dw_mutex_unlock(HMTX mutex) | 8542 void dw_mutex_unlock(HMTX mutex) |