VC 线程模型 初始化 、销毁 、驱动,事件与临界区
测试代码:
1 //线程模型开始,都可以作为类的成员变量 2 HANDLE m_hLogThread; 3 CEvt m_evLogList; 4 CCriSec m_csLogList; 5 //等待线程消息 6 void WaitForWriteLogThreadComplete() 7 { 8 m_evLogList.Set(); 9 VERIFY(::WaitForSingleObject(m_hLogThread, INFINITE) == WAIT_OBJECT_0); 10 11 ::CloseHandle(m_hLogThread); 12 m_hLogThread = NULL; 13 } 14 15 //线程函数体 16 17 UINT WINAPI LogThreadFunc(LPVOID pv) 18 { 19 CT1Dlg* pThis = (CT1Dlg*)pv; 20 ASSERT(pThis); 21 22 MYList<int > lsLogList; 23 24 while(TRUE) 25 { 26 VERIFY(::WaitForSingleObject(m_evLogList, INFINITE) == WAIT_OBJECT_0); 27 { 28 CCriSecLock locallock(m_csLogList); 29 30 if(pThis->m_nDataListForThread != 0) 31 { 32 TRACE("前:mList_size=%d %d\n",pThis->m_lsLogList.size(),lsLogList.size()); 33 pThis->m_lsLogList.swap(lsLogList); 34 TRACE("后:mList_size=%d %d\n",pThis->m_lsLogList.size(),lsLogList.size()); 35 } 36 else 37 { 38 pThis->m_lsLogList.clear(); 39 return 0; 40 } 41 } 42 43 44 45 while(lsLogList.size() > 0) 46 { 47 int iTemp = lsLogList.front(); 48 TRACE("iTemp=%X %d\n",GetCurrentThreadId(),iTemp); 49 lsLogList.pop_front(); 50 } 51 52 //销毁文件句柄 53 } 54 55 return 0; 56 } 57 58 59 60 61 62 void CT1Dlg::OnButton15() //初始化线程 63 { 64 // TODO: Add your control notification handler code here 65 //construct init 66 m_hLogThread= NULL; 67 m_nDataListForThread=1; 68 //end construct init 69 m_hLogThread = (HANDLE)_beginthreadex(NULL, 0, LogThreadFunc, (LPVOID)this, 0, NULL); 70 71 if(!m_hLogThread) 72 { 73 TRACE("线程创建失败!\n"); 74 return ; 75 } 76 77 } 78 79 void CT1Dlg::OnButton17() //销毁线程 80 { 81 // TODO: Add your control notification handler code here 82 83 m_nDataListForThread =0;//none 84 if(m_hLogThread) 85 { 86 WaitForWriteLogThreadComplete(); 87 } 88 89 } 90 91 void CT1Dlg::OnButton16() //线程驱动 需要线程做某件耗时或不能让主线程卡死的事 92 { 93 // TODO: Add your control notification handler code here 94 static int cnt=0; 95 { 96 CCriSecLock locallock(m_csLogList); 97 m_lsLogList.push_back(++cnt); 98 m_lsLogList.push_back(++cnt); 99 if(cnt>10) cnt =cnt %10; 100 } 101 102 m_evLogList.Set(); 103 }
公共代码:感谢 cnblogscom/ldcsaa
CEvt:
1 class CEvt 2 { 3 public: 4 CEvt(BOOL bManualReset = FALSE, BOOL bInitialState = FALSE, LPCTSTR pszName = NULL, LPSECURITY_ATTRIBUTES pSecurity = NULL) 5 { 6 m_hEvent = ::CreateEvent(pSecurity, bManualReset, bInitialState, pszName); 7 ASSERT(IsValid()); 8 } 9 10 ~CEvt() 11 { 12 if(IsValid()) 13 VERIFY(::CloseHandle(m_hEvent)); 14 } 15 16 BOOL Open(DWORD dwAccess, BOOL bInheritHandle, LPCTSTR pszName) 17 { 18 if(IsValid()) 19 VERIFY(::CloseHandle(m_hEvent)); 20 21 m_hEvent = ::OpenEvent(dwAccess, bInheritHandle, pszName); 22 return(IsValid()); 23 } 24 25 BOOL Pulse() {return(::PulseEvent(m_hEvent));} 26 BOOL Reset() {return(::ResetEvent(m_hEvent));} 27 BOOL Set() {return(::SetEvent(m_hEvent));} 28 29 HANDLE& GetHandle () {return m_hEvent;} 30 operator HANDLE () {return m_hEvent;} 31 BOOL IsValid () {return m_hEvent != NULL;} 32 33 private: 34 CEvt(const CEvt&); 35 CEvt operator = (const CEvt&); 36 37 private: 38 HANDLE m_hEvent; 39 };
CCriSec:
1 class CCriSec 2 { 3 public: 4 CCriSec() {::InitializeCriticalSection(&m_crisec);} 5 ~CCriSec() {::DeleteCriticalSection(&m_crisec);} 6 7 void Lock() {::EnterCriticalSection(&m_crisec);} 8 void Unlock() {::LeaveCriticalSection(&m_crisec);} 9 10 private: 11 CCriSec(const CCriSec& cs); 12 CCriSec operator = (const CCriSec& cs); 13 14 private: 15 CRITICAL_SECTION m_crisec; 16 };
完。boyang987
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