C / C++ / MFC

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Variable declarations

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cahr queryFile[256];

string queryFileString;

int currentMap;

hash_map <std::string*, HANDLE*> ThreadMutexMapPrimary;

hash_map <std::string*, HANDLE*>::iterator hThreadIterBegin;

hash_map <std::string*, HANDLE*>::iterator hThreadIterEnd;



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FUNCTION CALL

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In 1st Thread:-> For fetching 



string queryFileString = queryFile;

	HANDLE presentMutex = CreateMutex(NULL,FALSE,NULL);

	if(presentMutex == NULL)

	{

		WriteLog("Error Creating Mutex");

	}

	else

		if(currentMap == 1)

			ThreadMutexMapPrimary.insert(hash_map <std::string*, HANDLE*>::value_type(&queryFileString,&presentMutex));

		else

			ThreadMutexMapSecondary.insert(hash_map <std::string*, HANDLE*>::value_type(&queryFileString,&presentMutex));









In 2nd Thread:-> For writing values

switch(currentMap)

		{

		case 1:

			if(ThreadMutexMapPrimary.empty())

			{

				WriteLog("Hash Map Empty No record to Write");

				break;

			}

			hThreadIterBegin =  ThreadMutexMapPrimary.begin();

			hThreadIterEnd = ThreadMutexMapPrimary.end();

			currentMap = 2;

			currentMappingSetReplaced = true;

			break;

		case 2:

			if(ThreadMutexMapSecondary.empty())

			{

				WriteLog("Hash Map Empty No record to Write");

				break;

			}

			hThreadIterBegin =  ThreadMutexMapSecondary.begin();

			hThreadIterEnd = ThreadMutexMapSecondary.end();

			currentMap = 1;

			currentMappingSetReplaced = true;

			break;

		}



		DebugLog("after swtich(currentMap)");

		if(currentMappingSetReplaced == true)

		{

			while((hThreadIterBegin != hThreadIterEnd))

			{

				WriteLog("Beginning Database Archival System...\n");

				string parameter;

				string DatabaseName;

				remove(newFileName.c_str());

				

 				WaitForSingleObject(*hThreadIterBegin->second,INFINITE); ----> service crashes here

				

				rename(hThreadIterBegin->first->c_str(),newFileName.c_str()); ---

				

				ReleaseMutex(*hThreadIterBegin->second);



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Debug Values:->

----------

value of queryFile -> "C:\windows\Logs\Tsql\Jul2009.sql"



value of queryFileString ->"C:\windows\Logs\Tsql\Jul2009.sql"



value of currentMap = 1





ThreadMutexMapPrimary -> [1](("C"\Windows\Logs\Tsql\Jul2009.sql",0x0201bae)) --> value in 1st thread



ThreadMutexMapPrimary -> [1]((0x0201ff74 {_Bx={...} _Mysize=??? _Myres=??? },0x0201bae)) -> value in second thread,changes and is crashed.



newFileName.c_str() -> "C:\windows\Logs\Tsql\Jul2009.sql";-----> to be deleted and new the value of thread mutex map to be inserted.





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