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Shared Memory with IPC with threads

, 4 Oct 2004 CPOL
Shared memory as used along with threads to communicate between processes.
oneatatimesrc.zip
OneAtaTime
OneAtaTime.clw
OneAtaTime.dsw
OneAtaTime.dsp
res
OneAtaTime.ico
oneatatime_demo.zip
Debug
OneAtaTime.exe
// OneAtaTimeDlg.h : header file
//

#if !defined(AFX_ONEATATIMEDLG_H__6616245C_8DC3_45E4_B8BF_BA997155948F__INCLUDED_)
#define AFX_ONEATATIMEDLG_H__6616245C_8DC3_45E4_B8BF_BA997155948F__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000

/////////////////////////////////////////////////////////////////////////////
// COneAtaTimeDlg dialog
#define KILL_APP WM_USER+10
#define RECV_MESSAGE WM_USER+20
#define CHILD_START WM_USER+30

struct KSharedMemory
{
	DWORD processID;
	BOOL childAck;
	char data[1000];
	UINT dataSize;

};

UINT StartProbing(LPVOID lParam);


class COneAtaTimeDlg : public CDialog
{
// Construction
public:
	void OnChildStart();
	void OnRecvMessage();
	void OnKillApp();
	COneAtaTimeDlg(CWnd* pParent = NULL);	// standard constructor

// Dialog Data
	//{{AFX_DATA(COneAtaTimeDlg)
	enum { IDD = IDD_ONEATATIME_DIALOG };
	CListBox	m_recvlist;
	CString	m_status;
	CString	m_message;
	//}}AFX_DATA

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

// Implementation
protected:
	HICON m_hIcon;

	// Generated message map functions
	//{{AFX_MSG(COneAtaTimeDlg)
	virtual BOOL OnInitDialog();
	afx_msg void OnSysCommand(UINT nID, LPARAM lParam);
	afx_msg void OnPaint();
	afx_msg HCURSOR OnQueryDragIcon();
	afx_msg int OnCreate(LPCREATESTRUCT lpCreateStruct);
	afx_msg void OnButtonKill();
	afx_msg void OnButtonSend();
	//}}AFX_MSG
	DECLARE_MESSAGE_MAP()
private:
	KSharedMemory *kShMem;
	DWORD kProcessId; // Process ID
	HANDLE kMap; // Shared Memory
	HANDLE kMutex; // The Synchronization Object
	BOOL kParentOrChild; // Identify the Process as Parent or Child.

	


};

//{{AFX_INSERT_LOCATION}}
// Microsoft Visual C++ will insert additional declarations immediately before the previous line.

#endif // !defined(AFX_ONEATATIMEDLG_H__6616245C_8DC3_45E4_B8BF_BA997155948F__INCLUDED_)

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This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

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About the Author

Sreekanth Muralidharan
Technical Lead
India India
I am a personality from Trivandrum , a green peaceful place in Kerala, South India.
I have been an enthusiast of Windows programming when I started creating simple windows when I learnt VC++ in LCC in Trivandrum. From then on its all about Windows in my flesh and blood.
My career graph moves like this:
1. I started working as a C/C++ programmer in a company in Trivandrum where I learnt the ABCs of Software Industry. I worked with them for about 1 year. I could not contine since I was in contract for 1 year.
2. Then I joined another organization in Trivandrum who gave me challenges to love. They made me mad about VC++ and Windows.
I was mad about Embedded Systems which made me, Myself = Embedded Systems + VC++.
3. Software Engineer in a telecom company in Hyderabad, Andhra Pradesh, S.India.
4. Currently working with a telecom company in Bangalore.
I totally, so, have experience of about 4.5 years.

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