| 93 | return lock.value(); |
| 94 | } |
| 95 | void unblockWaiting() |
| 96 | { |
| 97 | if (blockedWriters.value()) |
| 98 | { |
| 99 | if (!SetEvent(writers_event)) |
| 100 | system_call_failed::raise("SetEvent"); |
| 101 | } |
| 102 | else if (blockedReaders) |
| 103 | { |
| 104 | MutexLockGuard guard(blockedReadersLock, "RWLock::unblockWaiting"); |
| 105 | if (blockedReaders && !ReleaseSemaphore(readers_semaphore, blockedReaders, NULL)) |
| 106 | { |
| 107 | system_call_failed::raise("ReleaseSemaphore"); |
| 108 | } |
| 109 | } |
| 110 | } |
| 111 | bool tryBeginRead(const char* aReason) |
| 112 | { |
| 113 | if (lock.value() < 0) |