线程同步

zhouats2000 2006-04-17 11:25:16

　　　　 th1 = New Thread(New ThreadStart(AddressOf Me.Run_HS))
th2 = New Thread(New ThreadStart(AddressOf Me.Run_BS))
th1.Name = "HS"
th2.Name = "BS"

th1.IsBackground = True
th2.IsBackground = True

th1.Start()
th2.Start()

th1.Join()
th2.Join()

线程th1和th2运行没问题，但是th1先执行完，我想让th1等待th2执行完后，一起退出，并显示结果，不知使线程同步。

请各位支招，谢谢。

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zhouats2000 2006-04-19

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>>> 我想让th1等待th2执行完后，一起退出，并显示结果
啥意思？一起退出？

====================================
一起退出, Th1,Th2两线程同时结束

SeeSunSet 2006-04-19

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private ReaderWriterLock rwl = new ReaderWriterLock();
private Thread thdProduce = null;
private Thread thdConsume = null;
private int m_iCounter = 0;
// 生产者线程函数
private void ThreadProduce()
{
while(true)
{
rwl.AcquireWriterLock(Timeout.Infinite);
while(m_iCounter < 1000)
{
m_iCounter++;
labProduce.Text = m_iCounter.ToString();
Thread.Sleep(10);
}
rwl.ReleaseWriterLock();
}
}
// 消费者线程函数
private void ThreadConsume()
{
while(true)
{
rwl.AcquireReaderLock(Timeout.Infinite);//无限长时间等待Infinite
while(m_iCounter > 0)
{
m_iCounter--;
labConsume.Text = m_iCounter.ToString();
Thread.Sleep(10);
}
rwl.ReleaseReaderLock();
}
}
// 启动线程的运行。
private void button1_Click(object sender, System.EventArgs e)
{
button1.Enabled = false;
button2.Enabled = true;
thdProduce = new Thread(new ThreadStart(this.ThreadProduce));
thdConsume = new Thread(new ThreadStart(this.ThreadConsume));
if(thdProduce != null)
thdProduce.Start();
if(thdConsume != null)
thdConsume.Start();
}
// 停止线程的运行。
private void button2_Click(object sender, System.EventArgs e)
{
rwl.ReleaseLock();
if(thdProduce != null)
thdProduce.Abort();
thdProduce = null;
if(thdConsume != null)
thdConsume.Abort();
thdConsume = null;
button1.Enabled = true;
button2.Enabled = false;
}
private void Form1_Closing(object sender, System.ComponentModel.CancelEventArgs e)
{
rwl.ReleaseLock();
if(thdProduce != null)
thdProduce.Abort();
if(thdConsume != null)
thdConsume.Abort();
}
}