www.pudn.com > wr.rar > wr.cpp

// wr.cpp : Defines the class behaviors for the application. 
// 
 
#include "stdafx.h" 
#include "wr.h" 
#include "wrDlg.h" 
 
#ifdef _DEBUG 
#define new DEBUG_NEW 
#undef THIS_FILE 
static char THIS_FILE[] = __FILE__; 
#endif 
 
///////////////////////////////////////////////////////////////////////////// 
// CWrApp 
 
int rcount=0;          //读者数目 
int wcount=0;   //写者数目 
CString str; 
HANDLE rMutex=CreateMutex(NULL,FALSE,NULL); 
HANDLE wMutex=CreateMutex(NULL,FALSE,NULL); 
//CCriticalSection critical_section; 
 
 
BEGIN_MESSAGE_MAP(CWrApp, CWinApp) 
	//{{AFX_MSG_MAP(CWrApp) 
		// NOTE - the ClassWizard will add and remove mapping macros here. 
		//    DO NOT EDIT what you see in these blocks of generated code! 
	//}}AFX_MSG 
	ON_COMMAND(ID_HELP, CWinApp::OnHelp) 
END_MESSAGE_MAP() 
 
///////////////////////////////////////////////////////////////////////////// 
// CWrApp construction 
 
CWrApp::CWrApp() 
{ 
	// TODO: add construction code here, 
	// Place all significant initialization in InitInstance 
} 
 
///////////////////////////////////////////////////////////////////////////// 
// The one and only CWrApp object 
 
CWrApp theApp; 
 
///////////////////////////////////////////////////////////////////////////// 
// CWrApp initialization 
 
BOOL CWrApp::InitInstance() 
{ 
	AfxEnableControlContainer(); 
 
	// Standard initialization 
	// If you are not using these features and wish to reduce the size 
	//  of your final executable, you should remove from the following 
	//  the specific initialization routines you do not need. 
 
#ifdef _AFXDLL 
	Enable3dControls();			// Call this when using MFC in a shared DLL 
#else 
	Enable3dControlsStatic();	// Call this when linking to MFC statically 
#endif 
 
	CWrDlg dlg; 
	m_pMainWnd = &dlg; 
	int nResponse = dlg.DoModal(); 
	if (nResponse == IDOK) 
	{ 
		// TODO: Place code here to handle when the dialog is 
		//  dismissed with OK 
	} 
	else if (nResponse == IDCANCEL) 
	{ 
		// TODO: Place code here to handle when the dialog is 
		//  dismissed with Cancel 
	} 
 
	// Since the dialog has been closed, return FALSE so that we exit the 
	//  application, rather than start the application's message pump. 
	return FALSE; 
} 
 
DWORD WINAPI R1(LPVOID lpParameter) 
{ 
	CEdit *pEdit=(CEdit*)lpParameter; 
	if(wcount>0) AfxMessageBox("Somebody else is writing,you can't write"); 
	else if(rcount==0) 
	{ 
		WaitForSingleObject(wMutex,INFINITE); 
		WaitForSingleObject(rMutex,INFINITE); 
	 
	} 
	else WaitForSingleObject(rMutex,INFINITE); 
		 
		rcount++; 
		str="读者1正在读"; 
		pEdit->SetWindowText(str); 
		Sleep(2000); 
		rcount--; 
		ReleaseMutex(rMutex); 
	if(rcount==0) ReleaseMutex(wMutex); 
	 
		return 0; 
} 
DWORD WINAPI R2(LPVOID lpParameter) 
{ 
	CEdit *pEdit=(CEdit*)lpParameter; 
	if(wcount>0) AfxMessageBox("Somebody else is writing,you can't write"); 
   else	if(rcount==0) 
	{ 
		WaitForSingleObject(wMutex,INFINITE); 
		WaitForSingleObject(rMutex,INFINITE); 
	 
	} 
	else WaitForSingleObject(rMutex,INFINITE); 
		rcount++; 
		str="读者2正在读"; 
		pEdit->SetWindowText(str); 
		Sleep(2000); 
		rcount--; 
		ReleaseMutex(rMutex); 
		 
	if(rcount==0) ReleaseMutex(wMutex); 
	 
		return 0; 
} 
 
DWORD WINAPI R3(LPVOID lpParameter) 
{ 
	CEdit *pEdit=(CEdit*)lpParameter; 
	if(wcount>0) AfxMessageBox("Somebody else is writing,you can't write"); 
	else if(rcount==0) 
	{ 
		WaitForSingleObject(wMutex,INFINITE); 
		WaitForSingleObject(rMutex,INFINITE); 
	 
	} 
	else WaitForSingleObject(rMutex,INFINITE); 
		 
		rcount++; 
		str="读者3正在读"; 
		pEdit->SetWindowText(str); 
		Sleep(2000); 
		rcount--; 
		ReleaseMutex(rMutex); 
	 
	if(rcount==0) ReleaseMutex(wMutex); 
	 
		return 0; 
} 
 
DWORD WINAPI R4(LPVOID lpParameter) 
{ 
	CEdit *pEdit=(CEdit*)lpParameter; 
	if(wcount>0) AfxMessageBox("Somebody else is writing,you can't write"); 
	else if(rcount==0) 
	{ 
		WaitForSingleObject(wMutex,INFINITE); 
		WaitForSingleObject(rMutex,INFINITE); 
	 
	} 
	else WaitForSingleObject(rMutex,INFINITE); 
		 
		rcount++; 
		str="读者4正在读"; 
		pEdit->SetWindowText(str); 
		Sleep(2000); 
		rcount--; 
		ReleaseMutex(rMutex); 
		 
	if(rcount==0) ReleaseMutex(wMutex); 
	 
		return 0; 
} 
DWORD WINAPI R5(LPVOID lpParameter) 
{ 
	CEdit *pEdit=(CEdit*)lpParameter; 
	if(wcount>0) AfxMessageBox("Somebody else is writing,you can't write"); 
	else if(rcount==0) 
	{ 
		WaitForSingleObject(wMutex,INFINITE); 
		WaitForSingleObject(rMutex,INFINITE); 
	 
	} 
	else WaitForSingleObject(rMutex,INFINITE); 
		 
		rcount++; 
		str="读者5正在读"; 
		pEdit->SetWindowText(str); 
		Sleep(2000); 
		rcount--; 
		ReleaseMutex(rMutex); 
		 
	if(rcount==0) ReleaseMutex(wMutex); 
	 
		return 0; 
} 
DWORD WINAPI w1(LPVOID lpParameter) 
{ 
	CEdit *pEdit=(CEdit*)lpParameter; 
	if(rcount>0) AfxMessageBox("Somebody else is reading,you can't write"); 
	else if(wcount==0) 
		{ 
		WaitForSingleObject(wMutex,INFINITE); 
		wcount++; 
		str="我是写者1"; 
		pEdit->SetWindowText(str); 
		ReleaseMutex(wMutex); 
		Sleep(2000); 
		wcount--; 
		} 
	   else AfxMessageBox("Somebody else is writing,you can't write");  
  
 
	return 0; 
} 
 
DWORD WINAPI w2(LPVOID lpParameter) 
{ 
	CEdit *pEdit=(CEdit*)lpParameter; 
	if(rcount>0) AfxMessageBox("Somebody else is reading,you can't write"); 
	else if(wcount==0) 
		{ 
		WaitForSingleObject(wMutex,INFINITE); 
		wcount++; 
		str="我是写者2"; 
		pEdit->SetWindowText(str); 
		ReleaseMutex(wMutex); 
		Sleep(2000); 
		wcount--; 
		} 
	   else AfxMessageBox("Somebody else is writing,you can't write");  
 
	return 0; 
} 
 
DWORD WINAPI w3(LPVOID lpParameter) 
{ 
	CEdit *pEdit=(CEdit*)lpParameter; 
	if(rcount>0) AfxMessageBox("Somebody else is reading,you can't write"); 
	else if(wcount==0) 
		{ 
		WaitForSingleObject(wMutex,INFINITE); 
		wcount++; 
		str="我是写者3"; 
		pEdit->SetWindowText(str); 
		ReleaseMutex(wMutex); 
		Sleep(2000); 
		wcount--; 
	   } 
		else AfxMessageBox("Somebody else is writing,you can't write");  
	return 0; 
} 
 
DWORD WINAPI w4(LPVOID lpParameter) 
{ 
	CEdit *pEdit=(CEdit*)lpParameter; 
	if(rcount>0) AfxMessageBox("Somebody else is reading,you can't write"); 
	else if(wcount==0) 
		{ 
		WaitForSingleObject(wMutex,INFINITE); 
		wcount++; 
		str="我是写者4"; 
		pEdit->SetWindowText(str); 
		ReleaseMutex(wMutex); 
		Sleep(2000); 
		wcount--; 
	   } 
		else AfxMessageBox("Somebody else is writing,you can't write");  
 
 
	return 0; 
} 
 
DWORD WINAPI w5(LPVOID lpParameter) 
{ 
	CEdit *pEdit=(CEdit*)lpParameter; 
	if(rcount>0) AfxMessageBox("Somebody else is reading,you can't write"); 
	else if(wcount==0) 
		{ 
		WaitForSingleObject(wMutex,INFINITE); 
		wcount++; 
		str="我是写者5"; 
		pEdit->SetWindowText(str); 
		ReleaseMutex(wMutex); 
		Sleep(2000); 
		wcount--; 
	   } 
		else AfxMessageBox("Somebody else is writing,you can't write");  
	return 0; 
}