Windows下多线程编程.ppt

1、Windows下多线程编程,骆卫华 MITEL,ICT 2007-1-08,创建线程,CWinThread* AfxBeginThread( AFX_THREADPROC pfnThreadProc, LPVOID pParam, int nPriority = THREAD_PRIORITY_NORMAL, UINT nStackSize = 0, DWORD dwCreateFlags = 0, LPSECURITY_ATTRIBUTES lpSecurityAttrs = NULL ); HANDLE CreateThread( LPSECURITY_ATTRIBUTES lpThrea

2、dAttributes, SIZE_T dwStackSize, LPTHREAD_START_ROUTINE lpStartAddress, LPVOID lpParameter, DWORD dwCreationFlags, LPDWORD lpThreadId ); uintptr_t _beginthreadex( void *security, unsigned stack_size, unsigned ( _stdcall *start_address )( void * ), void *arglist, unsigned initflag, unsigned *thrdaddr

3、 );,创建线程,DWORD WINAPI myroutine(LPVOID param) printf(%d,hello from subroutine!n,*(int*)param); return NULL; int _tmain(int argc, _TCHAR* argv) printf(hello from main!n); int iSub = 11; DWORD dId; HANDLE hThread = CreateThread(NULL,0,(LPTHREAD_START_ROUTINE)myroutine,(LPVOID) ,创建线程,unsigned _stdcall

4、mythread(void* p) printf(%d,hello from subroutine!n,*(int*)p); return NULL; int _tmain(int argc, _TCHAR* argv) printf(hello from main!n); int iSub = 11; unsigned tid; unsigned long thd = _beginthreadex(NULL,0,(unsigned int (_stdcall*)(void*)mythread,(void*) ,结束线程,子线程运行退出 BOOL CloseHandle( HANDLE hOb

5、ject ); void _endthreadex( unsigned retval );,暂停/重启线程,dwCreationFlags/initflag 0 CREATE_SUSPENDED DWORD SuspendThread( HANDLE hThread ); DWORD ResumeThread( HANDLE hThread );,线程优先级,从主线程继承 微调 BOOL SetThreadPriority( HANDLE hThread, int nPriority );,公共资源的并发访问与同步,Critical Section Mutex Semaphore Event,

6、临界区,Critical_Section cs; void main() InitializeCriticalSection( ,临界区,CCriticalSection cs; void main() DWORD WINAPI mythread(LPVOID param) cs.Lock(); cs.Unlock(); ,互斥量,HANDLE hMutex; void main() hMutex = CreateMutex(NULL,FALSE,”myownmutex”); DWORD WINAPI mythread(LPVOID param) WaitForSingleObject(hMu

7、tex,INFINITE); ReleaseMutex(hMutex); ,信号量,HANDLE hSema; void main() hSema = CreateSemaphore(NULL,nInit,nMax,”myownsemaphore”); DWORD WINAPI mythread(LPVOID param) WaitForSingleObject(hSema,5000L); ReleaseSemaphore(hSema,1,NULL); ,事件,HANDLE hEvent; void main() hEvent = CreateEvent(NULL,FALSE,TRUE,”myownevent”); WaitForSingleObject(hEvent,INFINITE); DWORD WINAPI mythread(LPVOID param) SetEve