用ACE实现生产者与消费者模式

最新推荐文章于 2022-03-04 09:38:41 发布

原创最新推荐文章于 2022-03-04 09:38:41 发布 · 98 阅读

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#OS #Go #thread

本文展示了一个使用ACE库实现的消息传递示例。该示例包括一个生产者任务和一个消费者任务，生产者任务不断地发送消息到消息队列中，而消费者任务从队列接收并处理这些消息。

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#include "ace/OS.h" 
#include "ace/Task.h" 
#include "ace/Message_Block.h" 

//The Consumer Task. 
class Consumer: 
	public ACE_Task<ACE_MT_SYNCH> 
{ 
public: 
	int open(void*) 
	{ 
		ACE_DEBUG((LM_DEBUG, "(%t) Consumer task opened \n")); 

		//Activate the Task 
		activate(THR_NEW_LWP,1); 

		return 0; 
	} 

	//The Service Processing routine 
	int svc(void) 
	{ 
		//Get ready to receive message from Producer 
		ACE_Message_Block * mb =0; 
		do 
		{ 
			mb=0; 

			//Get message from underlying queue 
			getq(mb); 
			ACE_DEBUG((LM_DEBUG, 
				"(%t)Got message: %d from remote task\n",*mb->rd_ptr())); 
		}while(*mb->rd_ptr()<10); 

		return 0; 
	} 

	int close(u_long) 
	{ 
		ACE_DEBUG((LM_DEBUG,"Consumer closes down \n")); 
		return 0; 
	} 
}; 

class Producer: 
	public ACE_Task<ACE_MT_SYNCH> 
{ 
public: 
	Producer(Consumer * consumer): 
	  consumer_(consumer), data_(0) 
	  { 
		  mb_=new ACE_Message_Block((char*)&data_,sizeof(data_)); 
	  } 
	  int open(void*) 
	  { 
		  ACE_DEBUG((LM_DEBUG, "(%t) Producer task opened \n")); 
		  //Activate the Task 
		  activate(THR_NEW_LWP,1); 
		  return 0; 
	  } 
	  //The Service Processing routine 
	  int svc(void) 
	  { 
		  while(data_<11) 
		  { 
			  //Send message to consumer 
			  ACE_DEBUG((LM_DEBUG, 
				  "(%t)Sending message: %d to remote task\n",data_)); 
			  consumer_->putq(mb_); 

			  //Go to sleep for a sec. 
			  ACE_OS::sleep(1); 
			  data_++; 
		  } 

		  return 0; 
	  } 

	  int close(u_long) 
	  { 
		  ACE_DEBUG((LM_DEBUG,"Producer closes down \n")); 
		  return 0; 
	  } 

private: 
	char data_; 
	Consumer * consumer_; 
	ACE_Message_Block * mb_; 
}; 

int main(int argc, char * argv[]) 
{ 
	Consumer *consumer = new Consumer; 
	Producer * producer = new Producer(consumer); 

	producer->open(0); 
	consumer->open(0); 

	//Wait for all the tasks to exit. 
	ACE_Thread_Manager::instance()->wait(); 
	return 0;
}