 Re: Trouble creating a thread
Zenon wrote:[color=blue]
> 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;[/color]
Let me guess... It's a data member of some class, isn't it?
[color=blue]
> 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);[/color]
'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...
[color=blue]
>
>
>
>
> The dwPort variable is correct and verified.[/color]
"Correct and verified" where? Before you call 'AfxBeginThread'?
[color=blue]
> 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?[/color]
<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
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