mutexs application.rar_Mutex_mutex 多线程

// mutexesDlg.cpp : implementation file // // This is a part of the Microsoft Foundation Classes C++ library. // Copyright (C) 1992-1998 Microsoft Corporation // All rights reserved. // // This source code is only intended as a supplement to the // Microsoft Foundation Classes Reference and related // electronic documentation provided with the library. // See these sources for detailed information regarding the // Microsoft Foundation Classes product. // // This sample application is derived from the Mutex application // distributed with Jeffrey Richter's "Advanced Windows" programming book // (Microsoft Press). See the book for more information about Win32 // programming topics, including thread synchronization. #include "stdafx.h" #include "mutexes.h" #include "mutexdlg.h" #include "threads.h" #ifdef _DEBUG #undef THIS_FILE static char THIS_FILE[] = __FILE__; #endif ///////////////////////////////////////////////////////////////////////////// // CAboutDlg dialog used for App About class CAboutDlg : public CDialog { public: CAboutDlg(); // Dialog Data //{{AFX_DATA(CAboutDlg) enum { IDD = IDD_ABOUTBOX }; //}}AFX_DATA // Implementation protected: virtual void DoDataExchange(CDataExchange* pDX); // DDX/DDV support //{{AFX_MSG(CAboutDlg) //}}AFX_MSG DECLARE_MESSAGE_MAP() }; CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD) { //{{AFX_DATA_INIT(CAboutDlg) //}}AFX_DATA_INIT } void CAboutDlg::DoDataExchange(CDataExchange* pDX) { CDialog::DoDataExchange(pDX); //{{AFX_DATA_MAP(CAboutDlg) //}}AFX_DATA_MAP } BEGIN_MESSAGE_MAP(CAboutDlg, CDialog) //{{AFX_MSG_MAP(CAboutDlg) // No message handlers //}}AFX_MSG_MAP END_MESSAGE_MAP() ///////////////////////////////////////////////////////////////////////////// // CMutexesDlg dialog CMutexesDlg::CMutexesDlg(CWnd* pParent /*=NULL*/) : CDialog(CMutexesDlg::IDD, pParent), m_mutex(FALSE, NULL), m_strNumber(_T("0")) { //{{AFX_DATA_INIT(CMutexesDlg) // NOTE: the ClassWizard will add member initialization here //}}AFX_DATA_INIT // Note that LoadIcon does not require a subsequent DestroyIcon in Win32 m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME); m_pCounterThread = NULL; m_pDisplayThread = NULL; } void CMutexesDlg::DoDataExchange(CDataExchange* pDX) { CDialog::DoDataExchange(pDX); //{{AFX_DATA_MAP(CMutexesDlg) // NOTE: the ClassWizard will add DDX and DDV calls here //}}AFX_DATA_MAP } BEGIN_MESSAGE_MAP(CMutexesDlg, CDialog) //{{AFX_MSG_MAP(CMutexesDlg) ON_WM_SYSCOMMAND() ON_WM_PAINT() ON_WM_QUERYDRAGICON() ON_CBN_SELCHANGE(IDC_PRIORITYCLASS, OnPriorityClassChange) ON_CBN_SELCHANGE(IDC_CNTRTHRDPRIORITY, OnPriorityChangeCntr) ON_CBN_SELCHANGE(IDC_DSPYTHRDPRIORITY, OnPriorityChangeDisp) ON_WM_CLOSE() ON_BN_CLICKED(IDC_PAUSE, OnPause) //}}AFX_MSG_MAP END_MESSAGE_MAP() ///////////////////////////////////////////////////////////////////////////// // CMutexesDlg message handlers BOOL CMutexesDlg::OnInitDialog() { CDialog::OnInitDialog(); // Add "About..." menu item to system menu. // IDM_ABOUTBOX must be in the system command range. ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX); ASSERT(IDM_ABOUTBOX < 0xF000); CMenu* pSysMenu = GetSystemMenu(FALSE); CString strAboutMenu; strAboutMenu.LoadString(IDS_ABOUTBOX); if (!strAboutMenu.IsEmpty()) { pSysMenu->AppendMenu(MF_SEPARATOR); pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu); } // Fill the Process Priority Class combo box and select // Normal. CComboBox* pBox; pBox = (CComboBox*) GetDlgItem(IDC_PRIORITYCLASS); ASSERT(pBox != NULL); if (pBox != NULL) { pBox->AddString(_T("Idle")); pBox->AddString(_T("Normal")); pBox->AddString(_T("High")); pBox->AddString(_T("Realtime")); pBox->SetCurSel(1); // Normal } // Fill the Display Thread Priority // combo box and select Normal. pBox = (CComboBox*) GetDlgItem(IDC_DSPYTHRDPRIORITY); ASSERT(pBox != NULL); if (pBox != NULL) { pBox->AddString(_T("Idle")); pBox->AddString(_T("Lowest")); pBox->AddString(_T("Below normal")); pBox->AddString(_T("Normal")); pBox->AddString(_T("Above normal")); pBox->AddString(_T("Highest")); pBox->AddString(_T("Timecritical")); pBox->SetCurSel(3); // Normal } // Fill the Counter Thread Priority // combo box and select Normal. pBox = (CComboBox*) GetDlgItem(IDC_CNTRTHRDPRIORITY); ASSERT(pBox != NULL); if (pBox != NULL) { pBox->AddString(_T("Idle")); pBox->AddString(_T("Lowest")); pBox->AddString(_T("Below normal")); pBox->AddString(_T("Normal")); pBox->AddString(_T("Above normal")); pBox->AddString(_T("Highest")); pBox->AddString(_T("Timecritical")); pBox->SetCurSel(3); // Normal } // initialize the threads and let them start running! m_pDisplayThread = (CDisplayThread*) AfxBeginThread(RUNTIME_CLASS(CDisplayThread), THREAD_PRIORITY_NORMAL, 0, CREATE_SUSPENDED); m_pDisplayThread->SetOwner(this); m_pDisplayThread->ResumeThread(); m_pCounterThread = (CCounterThread*) AfxBeginThread(RUNTIME_CLASS(CCounterThread), THREAD_PRIORITY_NORMAL, 0, CREATE_SUSPENDED); m_pCounterThread->SetOwner(this); m_pCounterThread->ResumeThread(); return TRUE; // return TRUE unless you set the focus to a control } void CMutexesDlg::OnSysCommand(UINT nID, LPARAM lParam) { if ((nID & 0xFFF0) == IDM_ABOUTBOX) { CAboutDlg dlgAbout; dlgAbout.DoModal(); } else { CDialog::OnSysCommand(nID, lParam); } } // If you add a minimize button to your dialog, you will need the code below // to draw the icon. For MFC applications using the document/view model, // this is automatically done for you by the framework. void CMutexesDlg::OnPaint() { if (IsIconic()) { CPaintDC dc(this); // device context for painting SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0); // Center icon in client rectangle 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; // Draw the icon dc.DrawIcon(x, y, m_hIcon); } else { CDialog::OnPaint(); } } // The system calls this to obtain the cursor to display while the user drags // the minimized window. HCURSOR CMutexesDlg::OnQueryDragIcon() { return (HCURSOR) m_hIcon; } void CMutexesDlg::AddToListBox(LPCTSTR szBuffer) { CListBox* pBox = (CListBox*) GetDlgItem(IDC_DATABOX); ASSERT(pBox != NULL); if (pBox != NULL) { int x = pBox->AddString(szBuffer); pBox->SetCurSel(x); if (pBox->GetCount() > 100) pBox->DeleteString(0); } } void CMutexesDlg::OnClose() { int nCount = 0; DWORD dwStatus; CButton* pCheck = (CButton*) GetDlgItem(IDC_PAUSE); BOOL bPaused = ((pCheck->GetState() & 0x003) != 0); if (bPaused == TRUE) { pCheck->SetCheck(0); m_pCounterThread->ResumeThread(); m_pDisplayThread->ResumeThread(); } if (m_pCounterThread != NULL) { VERIFY(::GetExitCodeThread(m_pCounterThread->m_hThread, &dwStatus)); if (dwStatus == STILL_ACTIVE) { nCount++; m_pCounterThread->m_bDone = TRUE; } else { delete m_pCounterThread; m_pCounterThread = NULL; } } if (m_pDisplayThread != NULL) { VERIFY(::GetExitCodeThread(m_pDisplayThread->m_hThread, &dwStatus)); if (dwStatus == STILL_ACTIVE) { nCount++; m_pDisplayThread->m_bDone = TRUE; } else { delete m_pDisplayThread; m_pDisplayThread = NULL; } } if (nCount == 0) CDialog::OnClose(); else PostMessage(WM_CLOSE, 0, 0); } void CMutexesDlg::OnPriorityClassChange() { DWORD dw; CComboBox* pBox = (CComboBox*) GetDlgItem(IDC_PRIORITYCLASS); int nCurSel = pBox->GetCurSel(); switch (nCurSel) { case 0: dw = IDLE