eventsdlg.cpp

这些源代码

// EventsDlg.cpp : implementation file
//

#include "stdafx.h"
#include "Events.h"
#include "EventsDlg.h"

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

/////////////////////////////////////////////////////////////////////////////
// CEventsDlg dialog

void Randomize ();
int Random (int num);

static int	g_nWaitTime = 1500;

CEventsDlg::CEventsDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CEventsDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CEventsDlg)
		// 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);
}

void CEventsDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CEventsDlg)
	//}}AFX_DATA_MAP
	DDX_Control(pDX, IDC_MESSAGE_PROCESSOR, m_strProcessor);
	DDX_Control(pDX, IDC_MESSAGE_RECEIVER, m_strReceiver);
}

BEGIN_MESSAGE_MAP(CEventsDlg, CDialog)
	//{{AFX_MSG_MAP(CEventsDlg)
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CEventsDlg message handlers

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

	// 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

    Randomize ();
	m_bmpKey.LoadBitmap (IDB_MUTEXKEY);
	m_Images.Create (IDB_MUTEXKEY, 32, 2, ILC_MASK);

	m_strReceiver.GetWindowRect (m_rcReceiver);
	m_strProcessor.GetWindowRect (m_rcProcessor);
	ScreenToClient (m_rcReceiver);
	ScreenToClient (m_rcProcessor);
	m_rcReceiver.right = m_rcReceiver.left - 10;
	m_rcReceiver.left = m_rcReceiver.right - 32;
	m_rcProcessor.left = m_rcReceiver.left;
	m_rcProcessor.right = m_rcReceiver.right;
//
//	For a dialog box, ScreenToClient includes the title
//	bar, so adjust for it.
//
	m_rcProcessor.top += 16;
	m_rcProcessor.bottom += 16;
	m_rcReceiver.top += 16;
	m_rcReceiver.bottom += 16;

	m_nQueueCount = 0;
	::SetWindowText (GetDlgItem(IDC_STATIC_QUEUECOUNT)->m_hWnd, "0");
	AfxBeginThread (StartReceiver, this);
	AfxBeginThread (StartProcessor, this);

	return TRUE;
}

// 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 CEventsDlg::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 CEventsDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CEventsDlg::AddItemToQueue(QUEUEITEM *pItem)
{
	m_strReceiver.SetWindowText ("Waiting for queue");
	CSingleLock QueueLock(&m_cs);
	QueueLock.Lock ();
	DrawKey (m_rcReceiver, true);
	m_strReceiver.SetWindowText ("Queue is locked");
	Sleep (Random(g_nWaitTime));
	DrawKey (m_rcReceiver, false);
	m_strReceiver.SetWindowText ("Queue is unlocked");
	++m_nQueueCount;
	CString strText;
	strText.Format ("%d", m_nQueueCount);
	::SetWindowText (GetDlgItem(IDC_STATIC_QUEUECOUNT)->m_hWnd, (LPCSTR) strText);
//	m_cs.Unlock ();
}

int CEventsDlg::DeleteItemFromQueue(QUEUEITEM *pItem)
{
	if (!m_nQueueCount)
		return (0);
	m_strProcessor.SetWindowText ("Waiting for queue");
	CSingleLock QueueLock(&m_cs);
	QueueLock.Lock ();
	DrawKey (m_rcProcessor, true);
	m_strProcessor.SetWindowText ("Queue is locked");
	Sleep (Random(g_nWaitTime));
	DrawKey (m_rcProcessor, false);
	m_strProcessor.SetWindowText ("Queue is unlocked");
	--m_nQueueCount;
	CString strText;
	strText.Format ("%d", m_nQueueCount);
	::SetWindowText (GetDlgItem(IDC_STATIC_QUEUECOUNT)->m_hWnd, (LPCSTR) strText);
	int nCount = m_nQueueCount;
//	m_cs.Unlock ();
	return (nCount);
}

UINT CEventsDlg::StartReceiver(void *pParam)
{
	CEventsDlg *pOwner = (CEventsDlg *) pParam;
	QUEUEITEM qi;
	while (1)
	{
		if (g_nWaitTime > 100)
			g_nWaitTime -= 100;
		pOwner->m_strReceiver.SetWindowText ("Receiving item");
		int nWaitTime, nCount;
		nWaitTime = Random (7000)+ 3000;
			;
		Sleep (nWaitTime);
		nCount = Random (7) + 1;
		while (nCount--)
		{
			pOwner->AddItemToQueue (&qi);
			pOwner->m_CheckQueue.SetEvent ();
		}
	}
	return (0);
}

UINT CEventsDlg::StartProcessor(void *pParam)
{
	CEventsDlg *pOwner = (CEventsDlg *) pParam;
	QUEUEITEM qi;
	while (1)
	{
		pOwner->m_strProcessor.SetWindowText ("Waiting");
		DWORD dwEvent = WaitForSingleObject (pOwner->m_CheckQueue, INFINITE);
		switch (dwEvent)
		{
			case WAIT_OBJECT_0:
				pOwner->m_strProcessor.SetWindowText ("Processing item");
				while (pOwner->DeleteItemFromQueue (&qi))
				{
					pOwner->m_strProcessor.SetWindowText ("Processing");
					Sleep (1000);
				}
				continue;
			case WAIT_TIMEOUT:
				continue;
			default:
				return (-1);
		}
	}
	return (0);
}

void CEventsDlg::DrawKey(CRect &rc, bool bDraw)
{

	CWindowDC dc(this);
	if (bDraw == false)
		m_Images.Draw (&dc, 1, CPoint (rc.left, rc.top), ILC_MASK);
	else
		m_Images.Draw (&dc, 0, CPoint (rc.left, rc.top), ILC_MASK);
}