各种线程:事件、互斥量、信号量、临界区 的用法,我自己做的,有用,附件里面有,博客附件里面有
2013-09-25 23:37
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//包含头文件 #inlclude<afxmt.h>
struct prodata { CThreadDlg *P ; }; prodata m_Prodata; CEvent g_evet;//事件 CMutex g_mutex;//互斥量 CSemaphore g_cSHE(2,2);//信号量; CCriticalSection g_criSection; //定义临界区变量 static int nCount = 0;//公共变量 UINT Thread1( LPVOID lparam );//事件 UINT Thread2( LPVOID lparam );//事件 UINT Thread3( LPVOID lparam );//互斥量 UINT Thread4( LPVOID lparam );//互斥量 UINT Thread5( LPVOID lparam );//信号量 UINT Thread6( LPVOID lparam );//信号量 UINT Thread7( LPVOID lparam );//信号量 UINT Thread8( LPVOID lparam );//临界区 UINT Thread9( LPVOID lparam );//临界区 // 用于应用程序“关于”菜单项的 CAboutDlg 对话框 UINT Thread1( LPVOID lparam ) { prodata * pProdata = ( prodata *)lparam; //WaitForSingleObject( g_evet.m_hObject , 0xffffffff); g_evet.ResetEvent(); for ( int i = 0 ; i < 20 ; i ++ ) { CString strText; strText.Format("%d",nCount++ ); SetDlgItemText( pProdata->P->GetSafeHwnd() , IDC_EDIT1 , strText ); Sleep(1000); if( i%2 == 0) g_evet.SetEvent(); } g_evet.SetEvent(); return 0; } UINT Thread2( LPVOID lparam ) { prodata * pProdata = ( prodata *)lparam; WaitForSingleObject( g_evet.m_hObject , INFINITE); g_evet.ResetEvent();//设为有信号状态; for ( int i = 0 ; i < 20 ; i ++ ) { CString strText; strText.Format("%d",nCount-- ); SetDlgItemText( pProdata->P->GetSafeHwnd() , IDC_EDIT2 , strText ); Sleep(1000); if(i%3==0) g_evet.SetEvent();//设为无信号状态; } g_evet.SetEvent(); return 0; } UINT Thread3( LPVOID lparam )//互斥量 { prodata * pProdata = ( prodata *)lparam; g_mutex.Lock(); for ( int i = 0 ; i < 20 ; i ++ ) { CString strText; strText.Format("%d",nCount++ ); SetDlgItemText( pProdata->P->GetSafeHwnd() , IDC_EDIT1 , strText ); Sleep(1000); if( i%2 == 0) g_mutex.Unlock();// 让Thread4执行 } g_mutex.Unlock();//让Thread4执行 return 0; } UINT Thread4( LPVOID lparam )//互斥量 { prodata * pProdata = ( prodata *)lparam; g_mutex.Lock(); for ( int i = 0 ; i < 20 ; i ++ ) { CString strText; strText.Format("%d",nCount-- ); SetDlgItemText( pProdata->P->GetSafeHwnd() , IDC_EDIT2 , strText ); Sleep(1000); if(i%3==0) g_mutex.Unlock();//让Thread3执行; } g_mutex.Unlock(); return 0; } UINT Thread5( LPVOID lparam )//信号量 { prodata * pProdata = ( prodata *)lparam; g_cSHE.Lock(); for ( int i = 0 ; i < 20 ; i ++ ) { CString strText; strText.Format("%d",nCount++ ); SetDlgItemText( pProdata->P->GetSafeHwnd() , IDC_EDIT1 , strText ); Sleep(1000); if( i%2 == 0) g_cSHE.Unlock();// 让Thread4执行 } g_cSHE.Unlock();//让Thread4执行 return 0; } UINT Thread6( LPVOID lparam )//信号量 { prodata * pProdata = ( prodata *)lparam; g_cSHE.Lock(); for ( int i = 0 ; i < 20 ; i ++ ) { CString strText; strText.Format("%d",nCount-- ); SetDlgItemText( pProdata->P->GetSafeHwnd() , IDC_EDIT2 , strText ); Sleep(1000); if(i%3==0) g_cSHE.Unlock();//让Thread3执行; } g_cSHE.Unlock(); return 0; } UINT Thread7( LPVOID lparam )//信号量 { prodata * pProdata = ( prodata *)lparam; g_cSHE.Lock(); for ( int i = 0 ; i < 20 ; i ++ ) { CString strText; strText.Format("%d",nCount++ ); SetDlgItemText( pProdata->P->GetSafeHwnd() , IDC_EDIT3 , strText ); Sleep(1000); if(i%3==0) g_cSHE.Unlock();//让Thread3执行; } g_cSHE.Unlock(); return 0; } UINT Thread8( LPVOID lparam )//临界区 { prodata * pProdata = ( prodata *)lparam; g_criSection.Lock( );//给所有使用的资源上锁; for ( int i = 0 ; i < 20 ; i ++ ) { CString strText; strText.Format("%d",nCount++ ); SetDlgItemText( pProdata->P->GetSafeHwnd() , IDC_EDIT2 , strText ); Sleep(1000); if(i%3==0) g_criSection.Unlock();//让Thread3执行; } //g_criSection.Unlock(); g_criSection.Unlock(); return 0; } UINT Thread9( LPVOID lparam )//临界区 { prodata * pProdata = ( prodata *)lparam; g_criSection.Lock( ); for ( int i = 0 ; i < 20 ; i ++ ) { CString strText; strText.Format("%d",nCount++ ); SetDlgItemText( pProdata->P->GetSafeHwnd() , IDC_EDIT3 , strText ); Sleep(1000); if(i%3==0) g_criSection.Unlock();//让Thread3执行; } g_criSection.Unlock(); return 0; } class CAboutDlg : public CDialog { public: CAboutDlg(); // 对话框数据 enum { IDD = IDD_ABOUTBOX }; protected: virtual void DoDataExchange(CDataExchange* pDX); // DDX/DDV 支持 // 实现 protected: DECLARE_MESSAGE_MAP() }; CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD) { } void CAboutDlg::DoDataExchange(CDataExchange* pDX) { CDialog::DoDataExchange(pDX); } BEGIN_MESSAGE_MAP(CAboutDlg, CDialog) END_MESSAGE_MAP() // CThreadDlg 对话框 CThreadDlg::CThreadDlg(CWnd* pParent /*=NULL*/) : CDialog(CThreadDlg::IDD, pParent) { m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME); } void CThreadDlg::DoDataExchange(CDataExchange* pDX) { CDialog::DoDataExchange(pDX); } BEGIN_MESSAGE_MAP(CThreadDlg, CDialog) ON_WM_SYSCOMMAND() ON_WM_PAINT() ON_WM_QUERYDRAGICON() //}}AFX_MSG_MAP ON_BN_CLICKED(IDOK, OnBnClickedOk) ON_BN_CLICKED(IDOK2, OnBnClickedOk2) ON_BN_CLICKED(IDOK3, OnBnClickedOk3) ON_BN_CLICKED(IDOK4, OnBnClickedOk4) END_MESSAGE_MAP() // CThreadDlg 消息处理程序 BOOL CThreadDlg::OnInitDialog() { CDialog::OnInitDialog(); // 将\“关于...\”菜单项添加到系统菜单中。 // IDM_ABOUTBOX 必须在系统命令范围内。 ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX); ASSERT(IDM_ABOUTBOX < 0xF000); CMenu* pSysMenu = GetSystemMenu(FALSE); if (pSysMenu != NULL) { CString strAboutMenu; strAboutMenu.LoadString(IDS_ABOUTBOX); if (!strAboutMenu.IsEmpty()) { pSysMenu->AppendMenu(MF_SEPARATOR); pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu); } } // 设置此对话框的图标。当应用程序主窗口不是对话框时,框架将自动 // 执行此操作 SetIcon(m_hIcon, TRUE); // 设置大图标 SetIcon(m_hIcon, FALSE); // 设置小图标 // TODO: 在此添加额外的初始化代码 return TRUE; // 除非设置了控件的焦点,否则返回 TRUE } void CThreadDlg::OnSysCommand(UINT nID, LPARAM lParam) { if ((nID & 0xFFF0) == IDM_ABOUTBOX) { CAboutDlg dlgAbout; dlgAbout.DoModal(); } else { CDialog::OnSysCommand(nID, lParam); } } // 如果向对话框添加最小化按钮,则需要下面的代码 // 来绘制该图标。对于使用文档/视图模型的 MFC 应用程序, // 这将由框架自动完成。 void CThreadDlg::OnPaint() { if (IsIconic()) { CPaintDC dc(this); // 用于绘制的设备上下文 SendMessage(WM_ICONERASEBKGND, reinterpret_cast<WPARAM>(dc.GetSafeHdc()), 0); // 使图标在工作矩形中居中 int cxIcon = GetSystemMetrics(SM_CXICON); int cyIcon = GetSystemMetrics(SM_CYICON); CRect rect; GetClientRect(&rect); int x = (rect.Width() - cxIcon + 1) / 2; int y = (rect.Height() - cyIcon + 1) / 2; // 绘制图标 dc.DrawIcon(x, y, m_hIcon); } else { CDialog::OnPaint(); } } //当用户拖动最小化窗口时系统调用此函数取得光标显示。 HCURSOR CThreadDlg::OnQueryDragIcon() { return static_cast<HCURSOR>(m_hIcon); } void CThreadDlg::OnBnClickedOk()//事件 { m_Prodata.P = this; AfxBeginThread( Thread1 , &m_Prodata); AfxBeginThread( Thread2 , &m_Prodata); } void CThreadDlg::OnBnClickedOk2() { m_Prodata.P = this; AfxBeginThread( Thread3 , &m_Prodata); AfxBeginThread( Thread4 , &m_Prodata); } void CThreadDlg::OnBnClickedOk3()//信号量 { m_Prodata.P = this; AfxBeginThread( Thread5 , &m_Prodata); AfxBeginThread( Thread6 , &m_Prodata); AfxBeginThread( Thread7 , &m_Prodata); } void CThreadDlg::OnBnClickedOk4() { m_Prodata.P = this; AfxBeginThread( Thread8 , &m_Prodata); AfxBeginThread( Thread9 , &m_Prodata); }
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