C++ MessageManager::GetMsg方法代码示例

void* Listener(void * args)
{
	char buf[BUFSIZE];
	SDMSubreqst sub;
	SDMDeletesub del;
	MessageManager mm;
	mm.Async_Init(my_port);
	
	// Send one hearbeat, let the app fail
	SendHeartbeat();
	
	while(1)
	{
		if(mm.IsReady())
		{
			//SendHeartbeat();
#ifdef WIN32
			switch(mm.GetMsg(buf))
#else
			switch(mm.GetMessage(buf))
#endif
			{
			case SDM_Subreqst:
				sub.Unmarshal(buf);
				printf("Subscription Rec'd for %d\n",sub.msg_id.getInterfaceMessagePair()); fflush(NULL);
				pthread_mutex_lock(&subscription_mutex);
				subscriptions.AddSubscription(sub);
				pthread_mutex_unlock(&subscription_mutex);
				break;
			case SDM_Deletesub:
				printf("Cancel Rec'd\n");
				del.Unmarshal(buf);
				pthread_mutex_lock(&subscription_mutex);
				subscriptions.RemoveSubscription(del);
				pthread_mutex_unlock(&subscription_mutex);
				break;
			default:
				printf("Invalid Message found!\n");
				fflush(NULL);
				break;
			}
		}
		else
		{
			usleep(100000);
		}
	}
	return NULL;
}

int main(int argc, char ** argv)
{
	unsigned long result = 0;
	int length = 0;
	int miss_count = 0;
	int num_toget = 0;
	char buf[BUFSIZE];
	SDMReady heartbeat;
	MessageManager mm;
	SDMComponent_ID tm;
	
	//Set monitor process address
	heartbeat.source.setSensorID(0);
	heartbeat.source.setAddress(inet_addr("127.0.0.1"));
	heartbeat.source.setPort(PORT_TM_MONITOR);
	
	//Set TM address
	tm.setAddress(inet_addr("127.0.0.1"));
	tm.setPort(PORT_TM);
	tm.setSensorID(0);
	
	signal(SIGINT, SigIntHandler);
	tm_handle = StartTM(argv);
	mm.Async_Init_Both(PORT_TM_MONITOR);
	
	/* If spawn was successful */
	if (tm_handle != NULL)		
	{
		/* Allow the TM to get started up */
		sleep(HEARTBEAT_INTERVAL);
		while (1)
		{
			//Send heartbeats via UDP
			heartbeat.SendTo(tm);
			length = heartbeat.Marshal(buf);
			sleep(HEARTBEAT_INTERVAL);
			
			//If Task Manager quit
			if (!GetExitCodeProcess(tm_handle,&result))
				printf("  Monitor:  Invalid handle for retrieving exit code.\n");
			/* If the TaskManager has quit for some reason */
			if (result != STILL_ACTIVE)
			{
				printf("  Monitor:  TM failed, restarting...\n");
				tm_handle = StartTM(argv);
				if (tm_handle != NULL)
				{
					/* Allow the TM to restart */
					sleep(HEARTBEAT_INTERVAL);
					/* Start over at while */
					continue;
				}
				/* Error re-starting TM */
				else
				{
					printf("  Monitor:  Could not restart the TM.\n");
					return -1;
				}
			}
			/* The TM is still running, check for responses to heartbeat messages */
			else if (mm.IsReady())
			{
				//Should respond with one message
				num_toget = 1;
				
				while (mm.IsReady())
				{
					num_toget--;
					/* Message is discarded, we only care that one was received */
					mm.GetMsg(buf);
				}
				if (num_toget > 0)
					miss_count++;
				else
					miss_count = 0;
			}
			/* The TM is still running, but no responses were received */
			else
			{
				//If no messages were received
				miss_count++;
				if (miss_count == NUM_HEARTBEAT_TRIES)
				{
					printf("  Monitor:  TM unresponsive, restarting...\n");
					/* If the Terminate fails and the TM is already dead */
					if (!TerminateProcess(tm_handle,0))
					{
						/* Get its return value */
						GetExitCodeProcess(tm_handle,&result);
					}
					/* Restart the TM */
					tm_handle = StartTM(argv);
					/* Success restarting */
					if (tm_handle != NULL)
					{
						/* Allow TM to get started */
						sleep(HEARTBEAT_INTERVAL);
						/* Start over at while loop */
						continue;
					}
//.........这里部分代码省略.........

void* Listener(void * args)
{
	char buf[BUFSIZE];
	SDMSubreqst sub;
	SDMDeletesub del;
	MessageManager mm;
	mm.Async_Init(myPort);
	while(1)
	{
		pthread_testcancel();
		if(mm.IsReady())
		{
			SendHeartbeat();
#ifdef WIN32
			switch(mm.GetMsg(buf))
#else
			switch(mm.GetMessage(buf))
#endif
			{
			case SDM_ACK:
				printf("SDMAck received\n");
				helloReply = true;
				break;
			case SDM_Register:
				printf("SDMRegister received\n");
				waitForReg = false;
				break;
			case SDM_ID:
				printf("SDMID received\n");
				myID.Unmarshal(buf);
				printf("CompID: \n");
				printf("   SensorID: %li\n", myID.destination.getSensorID());
				printf("    Address: %lx\n", myID.destination.getAddress());
				printf("       Port: %i\n", myID.destination.getPort());
				waitForID = false;					
				break;
			case SDM_Subreqst:
				sub.Unmarshal(buf);
				printf("Subscription Rec'd for %d\n",sub.msg_id.getInterfaceMessagePair());
				pthread_mutex_lock(&subscription_mutex);
				subscriptions.AddSubscription(sub);
				pthread_mutex_unlock(&subscription_mutex);
				break;
			case SDM_Deletesub:
				printf("Cancel Rec'd\n");
				del.Unmarshal(buf);
				pthread_mutex_lock(&subscription_mutex);
				subscriptions.RemoveSubscription(del);
				pthread_mutex_unlock(&subscription_mutex);
				break;
			default:
				printf("Invalid Message found!\n");
				break;
			}
		}
		else
		{
			usleep(100000);
		}
	}
	return NULL;
}