bankerdlg.cpp

银行家算法：实现了动态的进程分配资源

// BankerDlg.cpp : implementation file
//

#include "stdafx.h"
#include "Banker.h"
#include "BankerDlg.h"
#include "ListDialog.h"
#include "RsDialog.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#endif



// CAboutDlg dialog used for App About

class CAboutDlg : public CDialog
{
public:
	CAboutDlg();

// Dialog Data
	enum { IDD = IDD_ABOUTBOX };

	protected:
	virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support

// Implementation
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()


// CBankerDlg dialog




CBankerDlg::CBankerDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CBankerDlg::IDD, pParent)
	, nProcess(2)
	, nResorce(1)
{
	/*m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);*/
	m_hIcons[0]=AfxGetApp()->LoadIcon(IDI_ICON1);
	m_hIcons[1]=AfxGetApp()->LoadIcon(IDI_ICON2);
	m_hIcons[2]=AfxGetApp()->LoadIcon(IDI_ICON3);
	m_hIcons[3]=AfxGetApp()->LoadIcon(IDI_ICON4);
	m_hIcons[4]=AfxGetApp()->LoadIcon(IDI_ICON5);
	m_hIcons[5]=AfxGetApp()->LoadIcon(IDI_ICON6);
	m_hIcons[6]=AfxGetApp()->LoadIcon(IDI_ICON7);
	m_hIcons[7]=AfxGetApp()->LoadIcon(IDI_ICON8);
}

void CBankerDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	DDX_Text(pDX, IDC_EDIT1, nProcess);
	DDV_MinMaxUInt(pDX, nProcess, 1, 100);
	DDX_Text(pDX, IDC_EDIT2, nResorce);
	DDV_MinMaxUInt(pDX, nResorce, 1, 100);
}

BEGIN_MESSAGE_MAP(CBankerDlg, CDialog)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	//}}AFX_MSG_MAP
	ON_BN_CLICKED(IDOK, &CBankerDlg::OnBnClickedOk)
END_MESSAGE_MAP()


// CBankerDlg message handlers

BOOL CBankerDlg::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);
	if (pSysMenu != NULL)
	{
		CString strAboutMenu;
		strAboutMenu.LoadString(IDS_ABOUTBOX);
		if (!strAboutMenu.IsEmpty())
		{
			pSysMenu->AppendMenu(MF_SEPARATOR);
			pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);
		}
	}

	// Set the icon for this dialog.  The framework does this automatically
	//  when the application's main window is not a dialog
	SetIcon(m_hIcons[1], TRUE);			// Set big icon
	SetIcon(m_hIcons[0], TRUE);			// Set big icon
	SetIcon(m_hIcons[2], TRUE);			// Set big icon
	SetIcon(m_hIcons[3], TRUE);			// Set big icon
	SetIcon(m_hIcons[4], TRUE);			// Set big icon
	SetIcon(m_hIcons[5], TRUE);			// Set big icon
	SetIcon(m_hIcons[6], TRUE);			// Set big icon
	SetIcon(m_hIcons[7], TRUE);			// Set big icon
	SetIcon(m_hIcons[3], FALSE);		// Set small icon
	SetIcon(m_hIcons[1], FALSE);		// Set small icon
	SetIcon(m_hIcons[2], FALSE);		// Set small icon
	SetIcon(m_hIcons[3], FALSE);		// Set small icon
	SetIcon(m_hIcons[4], FALSE);		// Set small icon
	SetIcon(m_hIcons[5], FALSE);		// Set small icon
	SetIcon(m_hIcons[6], FALSE);		// Set small icon
	SetIcon(m_hIcons[7], FALSE);		// Set small icon

	// TODO: Add extra initialization here

	return TRUE;  // return TRUE  unless you set the focus to a control
}

void CBankerDlg::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 CBankerDlg::OnPaint()
{
	if (IsIconic())
	{
		CPaintDC dc(this); // device context for painting

		SendMessage(WM_ICONERASEBKGND, reinterpret_cast<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_hIcons[6]);
		dc.DrawIcon(x, y, m_hIcons[7]);
		dc.DrawIcon(x, y, m_hIcons[0]);
		dc.DrawIcon(x, y, m_hIcons[1]);
		dc.DrawIcon(x, y, m_hIcons[2]);
		dc.DrawIcon(x, y, m_hIcons[3]);
		dc.DrawIcon(x, y, m_hIcons[4]);
		dc.DrawIcon(x, y, m_hIcons[5]);
		
		
	}
	else
	{
		CDialog::OnPaint();
	}
}

// The system calls this function to obtain the cursor to display while the user drags
//  the minimized window.
HCURSOR CBankerDlg::OnQueryDragIcon()
{
	return static_cast<HCURSOR>(m_hIcons[7]);
}


void CBankerDlg::OnBnClickedOk()
{
	UpdateData(true);

	ListDialog *ld = new ListDialog(NULL,nProcess,nResorce);

	CString str = _T("请输入各资源可利用的最大量!");
	RsDialog* rs = new RsDialog(NULL,nProcess,nResorce,str);
	do
	{
		if(rs->DoModal()==IDOK)
		{
			if(rs->boolean)
				for(UINT i=0; i<nResorce; i++)
					ld->Work[i] = ld->Available[i] = rs->Data[i];
		}
	    else
			return;
	}while(!rs->boolean);

	AfxMessageBox(_T("请输入各进程当前已分配的资源数量!"));
	for(UINT i=0; i<nProcess; i++)
	{
		str.Format("请输入P%d当前已分配的资源量!",i);
		rs->hint = str;
		do
		{
			if(rs->DoModal()==IDOK)
			{
				if(rs->boolean)
					for(UINT j=0; j<nResorce; j++)
						ld->Allocation[i][j] = rs->Data[j];
			}
			else
				return;
		}while(!rs->boolean);
	}

	AfxMessageBox(_T("请输入各进程对各类资源的最大需求!"));
	for(UINT i=0; i<nProcess; i++)
	{
		str.Format("请输入P%d对各类资源的最大需求!",i);
		rs->hint = str;
		do
		{
			if(rs->DoModal()==IDOK)
			{
				if(rs->boolean)
					for(UINT j=0; j<nResorce; j++)
					{
						ld->MAX[i][j] = rs->Data[j];
						ld->Need[i][j] = ld->MAX[i][j] - ld->Allocation[i][j];
					}
			}
			else
				return;
		}while(!rs->boolean);
	}
	if(ld->Safe())
	{
		ld->safety = _T(" √");
		
		CString path = _T("");
		UINT i;
		for (i=0; i<nProcess-1; i++)
		{
			CString cs;
			cs.Format("P%d-->",ld->Path[i]);
			path += cs;
		}
		CString cs;
		cs.Format("P%d",ld->Path[i]);
		path += cs;
		ld->SafeSequence = path;
	}
	else
	{
		ld->safety = _T("  X");
		ld->SafeSequence = _T("");
	}
	ld->DoModal();
	// TODO: Add your control notification handler code here
	OnOK();
}