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//! [0]
forever {
mutex.lock();
keyPressed.wait(&mutex);
do_something();
mutex.unlock();
}
//! [0]
//! [1]
forever {
getchar();
keyPressed.wakeAll();
}
//! [1]
//! [2]
forever {
mutex.lock();
keyPressed.wait(&mutex);
++count;
mutex.unlock();
do_something();
mutex.lock();
--count;
mutex.unlock();
}
//! [2]
//! [3]
forever {
getchar();
mutex.lock();
// Sleep until there are no busy worker threads
while (count > 0) {
mutex.unlock();
sleep(1);
mutex.lock();
}
keyPressed.wakeAll();
mutex.unlock();
}
//! [3]
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