emsdsddlg.cpp

本项目是一款内存动态分区分配模拟程序。用户通过本程序可以了解动态分区分配方式中使用的数据结构和分配算法

// EMSDSDDlg.cpp : implementation file
//

#include "stdafx.h"
#include "EMSDSD.h"
#include "EMSDSDDlg.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#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

	// ClassWizard generated virtual function overrides
	//{{AFX_VIRTUAL(CAboutDlg)
	protected:
	virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support
	//}}AFX_VIRTUAL

// Implementation
protected:
	//{{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()

/////////////////////////////////////////////////////////////////////////////
// CEMSDSDDlg dialog

CEMSDSDDlg::CEMSDSDDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CEMSDSDDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CEMSDSDDlg)
	m_lTotleEMSSpace = 640;
	m_lApplyEMSSpace = 0;
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CEMSDSDDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CEMSDSDDlg)
	DDX_Control(pDX, IDC_REALSEWORK, m_ccReleaseWork);
	DDX_Text(pDX, IDC_TOTLEEMSSPACE, m_lTotleEMSSpace);
	DDV_MinMaxLong(pDX, m_lTotleEMSSpace, 640, 4194304);
	DDX_Text(pDX, IDC_APPLYEMSSAPCE, m_lApplyEMSSpace);
	DDV_MinMaxLong(pDX, m_lApplyEMSSpace, 0, 4194304);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CEMSDSDDlg, CDialog)
	//{{AFX_MSG_MAP(CEMSDSDDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_REINIT, OnReinit)
	ON_BN_CLICKED(IDC_APPLY, OnApply)
	ON_BN_CLICKED(IDC_RELEASE, OnRelease)
	ON_BN_CLICKED(IDC_FIRSTARITHMETIC, OnFirstarithmetic)
	ON_BN_CLICKED(IDC_BESTARITHMETIC, OnBestarithmetic)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CEMSDSDDlg message handlers

BOOL CEMSDSDDlg::OnInitDialog()
{
	CDialog::OnInitDialog();

	m_myEMS = NULL;
	m_iArithmetic = 1;

	// 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);

	m_ccReleaseWork.AddString(_T("<没有作业>"));

	CheckRadioButton(IDC_FIRSTARITHMETIC,IDC_BESTARITHMETIC,IDC_FIRSTARITHMETIC);

	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_hIcon, TRUE);			// Set big icon
	SetIcon(m_hIcon, FALSE);		// Set small icon
	
	// TODO: Add extra initialization here

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

void CEMSDSDDlg::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 CEMSDSDDlg::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();
	}
	CClientDC clientDC(this);
	CBrush brushGreen, brushOrange;
	brushGreen.CreateSolidBrush(RGB(0,200,0));
	brushOrange.CreateSolidBrush(RGB(240,160,50));
	clientDC.FillRect(CRect(100,190,170,215),&brushGreen);
	clientDC.FillRect(CRect(255,190,325,215),&brushOrange);
	clientDC.FillRect(CRect(20,100,570,150),&brushGreen);
	clientDC.SetBkMode(TRANSPARENT);
	clientDC.TextOut(18,148,_T("^"),1);
	clientDC.TextOut(10,155,_T("0 K"),3);
	CString s1, s2;
	s1.Format("%d",m_lTotleEMSSpace);
	s2.Format("%d",m_lTotleEMSSpace/2);
	int num, temp;
	for(num = 0, temp = m_lTotleEMSSpace; temp > 0; temp /= 10, num++);
	clientDC.TextOut(568-7*num,155,s1.GetBuffer(num),num);
	clientDC.TextOut(567,148,_T("^"),1);
	clientDC.TextOut(575,155,_T("K"),1);
	for(num = 0, temp = m_lTotleEMSSpace/2; temp > 0; temp /= 10, num++);
	clientDC.TextOut(293,148,_T("^"),1);
	clientDC.TextOut(303-7*num,155,s2.GetBuffer(num),num);
	clientDC.TextOut(310,155,_T("K"),1);
	struct EMSTable * EMSTemp;
	for(EMSTemp = m_myEMS->EMST; EMSTemp !=NULL ; EMSTemp = EMSTemp->next)
	{
		if(!EMSTemp->isFree)
		{
			clientDC.FillRect(CRect(20+EMSTemp->start*550/m_lTotleEMSSpace,100,21+EMSTemp->end*550/m_lTotleEMSSpace,150),&brushOrange);
		}
	}
}

// The system calls this to obtain the cursor to display while the user drags
//  the minimized window.
HCURSOR CEMSDSDDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CEMSDSDDlg::OnReinit() 
{
	// TODO: Add your control notification handler code here
	UpdateData();
	if(m_myEMS != NULL) delete m_myEMS;
	m_myEMS = new MyEMS();
	m_myEMS->Init(m_lTotleEMSSpace);
	Invalidate();
}

void CEMSDSDDlg::OnApply() 
{
	// TODO: Add your control notification handler code here
	UpdateData();
	if(m_lApplyEMSSpace > 0) m_myEMS->Distribute(m_iArithmetic, m_lApplyEMSSpace);
	m_ccReleaseWork.ResetContent();
	struct WorkList * temp = m_myEMS->worklist;
	for(; temp->next != NULL; temp = temp->next)
	{
		CString s, r;
		s.Format("%d",temp->num);
		s+="#作业 大小：";
		r.Format("%d",(int)temp->size);
		s+=r;
		s+="K";
		m_ccReleaseWork.AddString(s);
	}
	Invalidate();
}

void CEMSDSDDlg::OnRelease() 
{
	// TODO: Add your control notification handler code here
	struct WorkList * temp = m_myEMS->worklist;
	struct EMSTable * et, *et1;
	for(int i = 0; temp->next != NULL; temp = temp->next, i++)
	{
		if(i == m_ccReleaseWork.GetCurSel())
		{
			et = temp->position;
			et->isFree = true;
			if(et->before!=NULL&&et->next!=NULL&&et->before->isFree&&et->next->isFree)
			{
				et->before->end=et->next->end;
				et->before->size+=(et->size+et->next->size);
				et->before->next=et->next->next;
				if(et->next->next!=NULL) et->next->next->before=et->before;
				delete et->next;
				delete et;
			}
			else if(et->before!=NULL&&et->before->isFree)
			{
				et->before->end=et->end;
				et->before->size+=et->size;
				et->before->next=et->next;
				et->next->before=et->before;
				delete et;
			}
			else if(et->next!=NULL&&et->next->isFree)
			{
				et->end=et->next->end;
				et->size+=et->next->size;
				et1=et->next;
				if(et->next->next!=NULL) et->next->next->before=et;
				et->next=et->next->next;
				delete et1;
			}
			if(temp == m_myEMS->worklist) m_myEMS->worklist=temp->next;
			else
			{
				temp->before->next = temp->next;
				temp->next->before = temp->before;
			}
			delete temp;
			break;
		}
	}
	m_ccReleaseWork.ResetContent();
	for(temp = m_myEMS->worklist; temp->next != NULL; temp = temp->next)
	{
		CString s, r;
		s.Format("%d",temp->num);
		s+="#作业 大小：";
		r.Format("%d",(int)temp->size);
		s+=r;
		s+="K";
		m_ccReleaseWork.AddString(s);
	}
	Invalidate();
}

void CEMSDSDDlg::OnFirstarithmetic() 
{
	// TODO: Add your control notification handler code here
	m_iArithmetic = 1;	
}

void CEMSDSDDlg::OnBestarithmetic() 
{
	// TODO: Add your control notification handler code here
	m_iArithmetic = 2;	
}