Multithreading Multi-Threaded Programming

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Example of Threads Pool – OnThreadTerminating LRESULT OnThreadTerminating(WPARAM wParam /*Thread ID*/, LPARAM) { THREAD_DATA* pThreadData; POSITION pos, prev_pos; for(pos = m_ThreadList.GetHeadPosition();pos!=NULL;) { prev_pos = pos; pThreadData = m_ThreadList.GetNext(pos); ASSERT_VALID(pThreadData); if(pThreadData->nThreadId == wParam) { CloseHandle(pThreadData->hThread); CloseHandle(pThreadData->hTerminateSignal); m_ThreadList.RemoveAt(prev_pos); delete pThreadData; break; } } return 0; } 54 Advanced Windows Network Programming 11/11/12
Example of Threads Pool –Thread function UINT ComputingThread(LPVOID lpvData) { DWORD dwWait; BOOL bStop=FALSE; HANDLE hTerminateSignal = (HANDLE)lpvData; while(!bStop) { dwWait = MsgWaitForMultipleObjects(1, &hTerminateSignal, FALSE, 0, QS_ALLINPUT); MSG msg; while(PeekMessage(&msg, NULL, NULL, NULL, PM_REMOVE)) { TranslateMessage(&msg); DispatchMessage(&msg); } if(dwWait == WAIT_TIMEOUT) { … /*computing */ } }else if(dwWait == WAIT_OBJECT_0) { break; // Terminate signal set. Break out of loop } //End Of if(dwWait == WAIT_TIMEOUT) }//End Of while(!bStop) ::PostMessage(g_hWndMain, MYWM_TERMINATING, GetCurrentThreadId(), 0); } 55 Advanced Windows Network Programming 11/11/12
Page 1 and 2:
Multithreading Multi-Threaded Progr
Page 3 and 4: Outline } Windows Message Processin
Page 5 and 6: MSG structure } The system sends a
Page 7 and 8: #include #include LRESULT CALLBAC
Page 9 and 10: Yielding Control } What would happe
Page 11 and 12: Writing the Worker Thread Function
Page 13 and 14: Starting the Thread } To start the
Page 15 and 16: The Running Threads } The AfxBeginT
Page 17 and 18: How the Main Thread Talks to a Work
Page 19 and 20: How does the worker thread get the
Page 21 and 22: What kind Msg in the PostMessage do
Page 23 and 24: Tips for Parameters of (WPARAM wPar
Page 25 and 26: Using Events for Thread Synchroniza
Page 27 and 28: Win32 Event HANDLE } CreateEvent fu
Page 29 and 30: WaitForSingleObject function } Wait
Page 31 and 32: WaitForMultipleObjects function } W
Page 33 and 34: Example main thread } Start the thr
Page 35 and 36: Timer in worker thread //the while
Page 37 and 38: Synchronization Classes } The multi
Page 39 and 40: When to Use Which? } Synchronizatio
Page 41 and 42: How to determine which is suitable?
Page 43 and 44: Example of using CCriticalSection }
Page 45 and 46: Example of using CMutex } Mutex is
Page 47 and 48: Example of using CSemaphore - 1 } C
Page 49 and 50: Win32 Semaphore Synchronization Obj
Page 51 and 52: Example of Threads Pool - Thread da
Page 53: Example of Threads Pool - Stop all
Page 57 and 58: References } Chapter 11,Windows Mes
Page 59 and 60: 59 Advanced Windows Network Program
Page 61: Classes not derived from CObject 61
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