Multithreading Multi-Threaded Programming

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Using Three Synchronization Classes } As an example, take an application that maintains a linked list of accounts. } This application allows up to three accounts to be examined in separate windows, } but only one can be updated at any particular time. When an account is updated, the updated data is sent over the network to a data archive. } This example application uses all three types of synchronization classes. } Because it allows up to three accounts to be examined at one time, it uses CSemaphore to limit access to three view objects. When an attempt to view a fourth account occurs, the application either waits until one of the first three windows closes or it fails. } When an account is updated, the application uses CCriticalSection to ensure that only one account is updated at a time. } After the update succeeds, it signals CEvent, which releases a thread waiting for the event to be signaled. This thread sends the new data to the data archive. 42 Advanced Windows Network <strong>Programming</strong> 11/11/12
Example of using CCriticalSection } Thread functions // Global Critical section CCriticalSection c_s; static int g_C; //Thread 1, just replace 1 with 2 for ThreadFunction2 UINT ThreadFunction1(LPVOID lParam) { CSingleLock lock(&c_s); // Create object for Single Lock lock.Lock(); for(int i=0;i
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: How to determine which is suitable?
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 and 54: Example of Threads Pool - Stop all
Page 55 and 56: Example of Threads Pool -Thread fun
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

Multithreading Multi-Threaded Programming

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