Trouble creating a thread

[Zenon]

Folks,
I am having a problem storing a port number read from a registry and
creating a thread, and I cannot figure out why. Here are the relevant
details:

I have a struct called SOCKET_INFO in a header file called
socketthreadcommon.h

typedef struct{
char szHost[50];
int nPort;
DWORD dwLastError;
BOOL bListening;
BOOL bCalling;
BOOL bConnected;
BOOL bAbort;
BOOL bTestWithoutSocket;
UINT nMsgSentCount;
float fHeadingInStatusMsg;

HANDLE hEventQueueNotEmpty;
MsgQueueSocketType MsgQueue[MSGQUEUEMAX];
UINT MsgQueueFreeIdx;
UINT MsgQueueUsedIdx;
} SOCKET_INFO;


I create an instance of this struct in a file called realerdlg.h

SOCKET_INFO m_ServerSocketInfo;



realerdlg.cpp sets the value of the nPort member

m_ServerSocketInfo.nPort = (int)(dwPort);




and finally, I am attempting to create a socket with the statement:

CWinThread *lpThread = AfxBeginThread(ServerSocketThread, (LPVOID)
&m_ServerSocketInfo);




The dwPort variable is correct and verified. In the
serversocketthread.cpp class, I cannot pick up the
value of nPort. The constructor there is

UINT ServerSocketThread( LPVOID lpInf )
{

SOCKADDR_IN Addr;
int AddrLen;
SOCKET_INFO* lpInfo = (SOCKET_INFO *) lpInf;
int nRetValue = 0;
CSocket ServerSocket;
BOOL bDone = FALSE;
CSocket ClientSocket;
MsgQueueSocketType MsgQueue;
int nBytes;
CRegistry Registry; // Registry object
PROGRAM_TYPE Program;

CTime CurrentTime;

}



This is code I inherited and am trying to debug... Does anyone have
any ideas?

thanks very much,

Zenon

 

[Petec]

Folks,
I am having a problem storing a port number read from a registry and
creating a thread

This is code I inherited and am trying to debug... Does anyone have
any ideas?

Standard C++ (the topic of this group) does not support threading, so please
ask in a group dedicated to your platform.
In your case it appears to be Microsoft Windows with MFC, so
microsoft.public.vc.mfc would be a good one.

- Pete

 

[Victor Bazarov]

Folks,
I am having a problem storing a port number read from a registry and
creating a thread, and I cannot figure out why. Here are the relevant
details:

I have a struct called SOCKET_INFO in a header file called
socketthreadcommon.h

typedef struct{
char szHost[50];
int nPort;
DWORD dwLastError;
BOOL bListening;
BOOL bCalling;
BOOL bConnected;
BOOL bAbort;
BOOL bTestWithoutSocket;
UINT nMsgSentCount;
float fHeadingInStatusMsg;

HANDLE hEventQueueNotEmpty;
MsgQueueSocketType MsgQueue[MSGQUEUEMAX];
UINT MsgQueueFreeIdx;
UINT MsgQueueUsedIdx;
} SOCKET_INFO;


I create an instance of this struct in a file called realerdlg.h

SOCKET_INFO m_ServerSocketInfo;

Let me guess... It's a data member of some class, isn't it?

realerdlg.cpp sets the value of the nPort member

m_ServerSocketInfo.nPort = (int)(dwPort);




and finally, I am attempting to create a socket with the statement:

CWinThread *lpThread = AfxBeginThread(ServerSocketThread, (LPVOID)
&m_ServerSocketInfo);

'AfcBeginThread' is not a standard C++ function. You would be much better
off asking in a newsgroup where it's on topic, like a Windows programming
newsgroup or an MFC one...

The dwPort variable is correct and verified.

"Correct and verified" where? Before you call 'AfxBeginThread'?

In the
serversocketthread.cpp class, I cannot pick up the
value of nPort. The constructor there is

UINT ServerSocketThread( LPVOID lpInf )
{

SOCKADDR_IN Addr;
int AddrLen;
SOCKET_INFO* lpInfo = (SOCKET_INFO *) lpInf;
int nRetValue = 0;
CSocket ServerSocket;
BOOL bDone = FALSE;
CSocket ClientSocket;
MsgQueueSocketType MsgQueue;
int nBytes;
CRegistry Registry; // Registry object
PROGRAM_TYPE Program;

CTime CurrentTime;

}



This is code I inherited and am trying to debug... Does anyone have
any ideas?

<offtopic>
The simplest idea I have is that your thread does not share the address
space with the rest of the program. When you pass in the pointer value,
it gets the pointer, but it's a pointer in a completely different area of
the process memory.
</offtopic>

Try asking in a Microsoft newsgroup, like comp.os.ms-windows.programmer.*

Victor