tryLock           658 AudioContext.cpp         hasLock = m_contextGraphMutex.tryLock();
tryLock           700 AudioContext.cpp     if (tryLock(mustReleaseLock)) {
tryLock           720 AudioContext.cpp     if (tryLock(mustReleaseLock)) {
tryLock           192 AudioContext.h     bool tryLock(bool& mustReleaseLock);
tryLock           443 AudioNode.cpp          hasLock = context()->tryLock(mustReleaseLock);