void removeThread(Thread *pthread)
{
Mutex::Locker lock(&ThreadMutex);
ThreadSet.Remove(pthread);
if (ThreadSet.GetSize() == 0)
ThreadsEmpty.Notify();
}
void finishAllThreads()
{
// Only original root thread can call this.
OVR_ASSERT(pthread_self() == RootThreadId);
Mutex::Locker lock(&ThreadMutex);
while (ThreadSet.GetSize() != 0)
ThreadsEmpty.Wait(&ThreadMutex);
}