src_corelib_thread_qwaitcondition_unix.cpp

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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
 
forever {
    mutex.lock();
    keyPressed.wait(&mutex);
    do_something();
    mutex.unlock();
}
 
 
forever {
    getchar();
    keyPressed.wakeAll();
}
 
 
forever {
    mutex.lock();
    keyPressed.wait(&mutex);
    ++count;
    mutex.unlock();
 
    do_something();
 
    mutex.lock();
    --count;
    mutex.unlock();
}
 
 
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();
}