聽說讀寫

internal sealed class ConditionVariablePattern
{
    private readonly Object m_lock = new Object();
    private Boolean m_condition = false;
    public void Thread1()
    {
        Monitor.Enter(m_lock); // Acquire a mutual-exclusive lock
        // While under the lock, test the complex condition "atomically"
        while (!m_condition)
        {
            // If condition is not met, wait for another thread to change the condition
            Monitor.Wait(m_lock); // Temporarily release lock so other threads can get it
        }
        // The condition was met, process the data...
        Monitor.Exit(m_lock); // Permanently release lock
    }
    public void Thread2()
    {
        Monitor.Enter(m_lock); // Acquire a mutual-exclusive lock
        // Process data and modify the condition...
        m_condition = true;
        // Monitor.Pulse(m_lock); // Wakes one waiter AFTER lock is released
        Monitor.PulseAll(m_lock); // Wakes all waiters AFTER lock is released
        Monitor.Exit(m_lock); // Release lock
    }
}