Method P

lab8/src/6/src/kernel/sync.cpp:45–66

}

void Semaphore::P()
{
    PCB *cur = nullptr;

    while (true)
    {
        semLock.lock();
        if (counter > 0)
        {
            --counter;
            semLock.unlock();
            return;
        }

        cur = programManager.running;
        waiting.push_back(&(cur->tagInGeneralList));
        cur->status = ProgramStatus::BLOCKED;

        semLock.unlock();
        programManager.schedule();
    }
}

void Semaphore::V()
{