Mercurial > dwindows
comparison template/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 | 58b5374355ab |
| children | 53547c9c99a2 |
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| 1157:79bd0aff0bc2 | 1158:f86f556ff29d |
|---|---|
| 3130 } | 3130 } |
| 3131 #endif | 3131 #endif |
| 3132 } | 3132 } |
| 3133 | 3133 |
| 3134 /* | 3134 /* |
| 3135 * Tries to gain access to the semaphore. | |
| 3136 * Parameters: | |
| 3137 * mutex: The handle to the mutex returned by dw_mutex_new(). | |
| 3138 * Returns: | |
| 3139 * DW_ERROR_NONE on success, DW_ERROR_TIMEOUT if it is already locked. | |
| 3140 */ | |
| 3141 int API dw_mutex_trylock(HMTX mutex) | |
| 3142 { | |
| 3143 return DW_ERROR_GENERAL; | |
| 3144 } | |
| 3145 | |
| 3146 /* | |
| 3135 * Reliquishes the access to the semaphore. | 3147 * Reliquishes the access to the semaphore. |
| 3136 * Parameters: | 3148 * Parameters: |
| 3137 * mutex: The handle to the mutex returned by dw_mutex_new(). | 3149 * mutex: The handle to the mutex returned by dw_mutex_new(). |
| 3138 */ | 3150 */ |
| 3139 void dw_mutex_unlock(HMTX mutex) | 3151 void dw_mutex_unlock(HMTX mutex) |