class TaskThread: public ACE_Task<ACE_MT_SYNCH>

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本文展示了一个使用ACE库进行线程同步的例子。通过两个线程打印递增计数及线程编号，演示了如何利用ACE_Thread_Mutex实现互斥访问以确保输出有序。每个线程运行时会等待一秒，并在进入临界区前使用ACE_Guard进行保护。

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#include "ace/Task.h"
#include "ace/OS.h"
#include<iostream>
#include "ace/Guard_T.h"

using namespace std;
ACE_Thread_Mutex mutex;

class TaskThread: public ACE_Task<ACE_MT_SYNCH>
{
public:
int m_num;
TaskThread(int num)
{
    m_num=num;
}

 virtual int svc(void)
 {
 for(int i=0;i<10;i++)
 {
 ACE_OS::sleep(1);
 ACE_Guard<ACE_Thread_Mutex> guard(mutex);
 cout<<endl<<i<<":hello thread num:"<<m_num<<endl; 
 }
 return 0;
 }

};

int main(int argc, char *argv[])
{
 TaskThread task(1),task2(2);
 task.activate();
 task2.activate();
while(true)
 ACE_OS::sleep(10);
return 0;
}

0:hello thread num:1

0:hello thread num:2

1:hello thread num:1

1:hello thread num:2

2:hello thread num:1

2:hello thread num:2

3:hello thread num:1

3:hello thread num:2

4:hello thread num:1

4:hello thread num:2

5:hello thread num:1

5:hello thread num:2

6:hello thread num:1

6:hello thread num:2

7:hello thread num:1

7:hello thread num:2

8:hello thread num:1

8:hello thread num:2

9:hello thread num:1

9:hello thread num:2