| 65 | } |
| 66 | |
| 67 | bool Semaphore::acquire( bool block, S32 timeoutMS ) |
| 68 | { |
| 69 | |
| 70 | bool ok; |
| 71 | AssertFatal(mData, "Semaphore::acquireSemaphore: invalid semaphore"); |
| 72 | |
| 73 | ok = pthread_mutex_lock(&mData->mDarkroom); |
| 74 | AssertFatal(ok == 0,"Mutex Lock failed on mDarkroom in acquireSemaphore()."); |
| 75 | |
| 76 | if(mData->count <= 0 && !block) { |
| 77 | ok = pthread_mutex_unlock(&mData->mDarkroom); |
| 78 | AssertFatal(ok == 0,"Mutex Unlock failed on mDarkroom when not blocking in acquireSemaphore()."); |
| 79 | return false; |
| 80 | } |
| 81 | |
| 82 | |
| 83 | while( mData->count <= 0 ) |
| 84 | { |
| 85 | ok = pthread_cond_wait(&mData->mCond, &mData->mDarkroom); // releases mDarkroom while blocked. |
| 86 | AssertFatal(ok == 0,"Waiting on mCond failed in acquireSemaphore()."); |
| 87 | } |
| 88 | |
| 89 | mData->count--; |
| 90 | |
| 91 | ok = pthread_mutex_unlock(&mData->mDarkroom); |
| 92 | AssertFatal(ok == 0,"Mutex Unlock failed on mDarkroom when leaving acquireSemaphore()."); |
| 93 | |
| 94 | return true; |
| 95 | } |
| 96 | |
| 97 | void Semaphore::release() |
| 98 | { |