webspeeddlg.cpp

Visual C++自动查询和智能代理程序设计书籍源码-WebSpeed

// WebSpeedDlg.cpp : implementation file
//

#include "stdafx.h"
#include "WebSpeed.h"
#include "WebSpeedDlg.h"
#include "CRobot.h"
#include "CRobotInternet.h"
#include "CRobotDatabase.h"
#include <afxmt.h>

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

// **********************
// *                    *
// *  Global Variables  *
// *                    *
// **********************

#define ACCESS_COUNT 3
#define MAX_URLS 100
	
int nURLs;
CString sURL[MAX_URLS];
int nGoodAccesses[MAX_URLS];
int nBadAccesses[MAX_URLS];
double dAvgAccessTime[MAX_URLS];
double dBestAccessTime[MAX_URLS];
double dWorstAccessTime[MAX_URLS];
double dTotalAccessTime[MAX_URLS];
int nOrder[MAX_URLS];

int nActiveThreads = 0;
int nOrderNo = 0;

CCriticalSection cs;

CString sNow;

// ****************	Global function
// *              *
// *  AccessSite  *
// *              *
// ****************
// Description:	Thread procedure to access a site and measure time
//
// Inputs:		pParam - address of sURL[] array element

UINT AccessSite(LPVOID pParam)
{
	// Get URL index number that function AfxBeginThread passed
	
	int u = *((int*) pParam);

	// Initialize statistics for this site

	nGoodAccesses[u] = 0;
	nBadAccesses[u] = 0;
	dAvgAccessTime[u] = -1;
	dBestAccessTime[u] = -1;
	dWorstAccessTime[u] = -1;
	dTotalAccessTime[u] = 0.0;

	CRobotInternet internet;
	
	int nResult;
	CString sErrMsg;
	CString sHTML;

	DWORD tStart, tFinish;
	double access_time = 0.0;
	double elapsed_time = 0.0;

	// Main loop to repeatedly access site and gather
	// timing information
	
	for (int nTry = 0; nTry < ACCESS_COUNT; nTry++)
	{
		tStart = GetTickCount();
		if (internet.httpGet(sURL[u], sHTML, nResult, sErrMsg))
		{
			tFinish = GetTickCount();
			access_time += (double(tFinish - tStart) / 1000.0);
			elapsed_time += access_time;
			cs.Lock();
			nGoodAccesses[u]++;
			if (dBestAccessTime[u] == -1 
				|| access_time < dBestAccessTime[u])
				dBestAccessTime[u] = access_time;
			if (dWorstAccessTime[u] == -1
				|| access_time > dWorstAccessTime[u])
				dWorstAccessTime[u] = access_time;
			cs.Unlock();
		} // End if
		else
			nBadAccesses[u]++;
	} // End for

	// Compute and store average access time and total access time

	cs.Lock();
	if (nGoodAccesses[u] > 0)
		dAvgAccessTime[u] = (elapsed_time) / nGoodAccesses[u];
	else
		dAvgAccessTime[u] = -1;
	dTotalAccessTime[u] = elapsed_time;
	
	// Store ranking order number if no access failures occurred
	
	if (nBadAccesses[u] == 0)
	{
		nOrderNo++;
		nOrder[u] = nOrderNo;
	} // End if

	// Decrease active thread count and return (terminate this thread)

	nActiveThreads--;
	cs.Unlock();
	return 0;
}

/////////////////////////////////////////////////////////////////////////////
// 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()

/////////////////////////////////////////////////////////////////////////////
// CWebSpeedDlg dialog

CWebSpeedDlg::CWebSpeedDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CWebSpeedDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CWebSpeedDlg)
	m_db = FALSE;
	m_html = FALSE;
	m_repeat = FALSE;
	m_status = _T("");
	m_urls = _T("");
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CWebSpeedDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CWebSpeedDlg)
	DDX_Control(pDX, IDC_URLS, m_urls_ctl);
	DDX_Check(pDX, IDC_DB, m_db);
	DDX_Check(pDX, IDC_HTML, m_html);
	DDX_Check(pDX, IDC_REPEAT, m_repeat);
	DDX_Text(pDX, IDC_STATUS, m_status);
	DDX_CBString(pDX, IDC_URLS, m_urls);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CWebSpeedDlg, CDialog)
	//{{AFX_MSG_MAP(CWebSpeedDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_ADD, OnAdd)
	ON_BN_CLICKED(IDC_REMOVE, OnRemove)
	ON_BN_CLICKED(IDC_RUN, OnRun)
	ON_WM_TIMER()
	ON_BN_CLICKED(IDC_STOP, OnStop)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CWebSpeedDlg message handlers

BOOL CWebSpeedDlg::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_hIcon, TRUE);			// Set big icon
	SetIcon(m_hIcon, FALSE);		// Set small icon
	
	nURLs = 0;
	LoadURLs();

	bRunning = false;
	m_html = true;
	m_status = "Ready";
	UpdateData(false);
	GetDlgItem(IDC_URLS)->SetFocus();

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

void CWebSpeedDlg::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 CWebSpeedDlg::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 CWebSpeedDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

// ***********
// *         *
// *  OnAdd  *
// *         *
// ***********
// Description: Message handler for the Add button.
//			    Adds the entered item to the URL list.

void CWebSpeedDlg::OnAdd() 
{
	if (nURLs >= MAX_URLS)
	{
		MessageBox("The URL list is full. You must delete a URL "
						"before you can enter any new ones.",
				   "Out Of Memory",
				   MB_ICONEXCLAMATION);
		return;
	} // End if
	CWaitCursor wc;
	UpdateData(true);
	sURL[nURLs] = m_urls;
	nURLs++;
	m_urls_ctl.AddString(m_urls);
	m_urls = "";
	UpdateData(false);
	m_urls_ctl.SetFocus();
}

// **************
// *            *
// *  OnRemove  *
// *            *
// **************
// Description:	Message handler for the Remove button.
//				Removes the selected item from the URL list.

void CWebSpeedDlg::OnRemove() 
{
	CWaitCursor wc;
	UpdateData(true);
	for (int u = 0; u < nURLs; u++)
	{
		if (sURL[u] == m_urls)
		{
			for (int u2 = u; u2 < nURLs - 1; u2++)
				sURL[u2] = sURL[u2 + 1];
			u = nURLs;
			nURLs--;
		}
	} // End for
	m_urls_ctl.DeleteString(m_urls_ctl.GetCurSel());
	m_urls = "";
	UpdateData(false);
	m_urls_ctl.SetFocus();
}

// ***********
// *         *
// *  OnRun  *
// *         *
// ***********
// Description:	Message handler for the Run button.
//				Saves URL list by calling SaveURLs().
//				Checks site by calling ScanSites().
//				If check box for repetition is checked,
//				sets timer to repeat scan in 15 minutes.

void CWebSpeedDlg::OnRun() 
{
	UpdateData(true);

	if (nURLs < 1)
	{
		MessageBox("No URLs have been defined.\n\n"
						"At least one URL must be defined "
						"before you can Run.",
				   "No URLs Defined",
				   MB_ICONEXCLAMATION);
		GetDlgItem(IDC_URLS)->SetFocus();
		return;
	} // End if
	
	CWaitCursor wc;