mutex 用法_createthread函数用法_releasemutex函数(3)

}

DWORD WINAPIWriteToDatabase( LPVOID lpParam )

{

DWORDdwCount=0, dwWaitResult;

//Request ownership of mutex.

while(dwCount < 100 )

{

dwWaitResult = WaitForSingleObject(

ghMutex, // handle to mutex

INFINITE); // no time-out interval

switch(dwWaitResult)

{

// Thethread got ownership of the mutex

caseWAIT_OECT_0:

__try{

g_x++;

//TODO: Write to the database

printf('Thread %d writing to database\n',

GetCurrentThreadId());

dwCount++;

}

__finally {

//Release ownership of the mutex object

if (!ReleaseMutex(ghMutex))

{

//Deal with error.

}

}

break;

// Thethread got ownership of an abandoned mutex

caseWAIT_ABANDONED:

returnFALSE;

}

}

returnTRUE;

}

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