C / C++ / MFC

14-Feb-07 19:51

I use Microsoft Visual Studio 6.0 and i want to debug a program without ther threads being stopped. toxcct did answer me yesterday,but I can not find the setting in VS 6.

Michael Dunn14-Feb-07 20:15

Michael Dunn

14-Feb-07 20:15

Run the program under the debugger using F5. The program will run until a thread hits a breakpoint or causes an exception.

--Mike--
Visual C++ MVP Cool | :cool:

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reza matinnejad14-Feb-07 22:43

14-Feb-07 22:43

but i don't want other threads of my prgoram to be stopped! I use microsoft visual studio 6.

reza matinnejad14-Feb-07 20:34

14-Feb-07 20:34

I want to set a breakpoint and debug one thread without other threads being stopped?

Waldermort14-Feb-07 22:52

Waldermort

14-Feb-07 22:52

AFAIK this is not possible. Threads usually send and share information between each other. If one thread has been stopped, it could very well cause the other thread to crash.

Perhaps you should consider using processes rather than threads.

reza matinnejad14-Feb-07 22:57

14-Feb-07 22:57

I am using a DLL in my program which checks a hardware periodically. When i am debugging my application,DLL reset the state of the hardware because of the pause time. Then i want DLL threads to run normally as i am debugging other threads!

Seekg problem in text file? [modified]

Waldermort14-Feb-07 23:12

Waldermort

14-Feb-07 23:12

Like I suggested in my last post, use processes not threads.

Create a process which loads your dll and does all the hardware monitoring. Create another process which handles events. When something happens with the hardware, use "inter process communication" to notify your other process.

Vishvanathan14-Feb-07 19:33

14-Feb-07 19:33

Hi,

I am working in text file application.In that application, to opening the file in read only mode like
fstream lpFile;
lpFile.open ( "sample.txt", ios::in );

then i read the file using this file pointer and some times , i move the pointer back to 1 position from current position using seekg ( -1, ios::cur ).

Text file size : 15 KB

Problem:

I couldn't move the file pointer to back using seekg function ( in some case only).I tried to clear the error flag if any before the seekg function. but no result.The problem still continue...
lpFile.clear ( );
lpFile.seekg ( -1, ios::cur );

Sample Text File:
[General]
To read the file information
like name,address,mobile number
[Address1]
Name=vichu
Address=India
Mobile=+919994445550
[Address2]
...
[Addressn]
Name=vishva
Address=chennai
mobile=100

****end of file-----
this is raw text file.

program code:
char chData;
lpFile.get ( chData );
while ( chData != '[' )
{
...
...
}

lpfile.clear ( );
lpFile.seekg ( -1, ios::cur );

Again start the above loop from '[' character.

The seekg function not work sometimes. How can i solve the probelm?

Is there any tool available to find the special character or unknown character in text file?

Thanks & Regards,

-- modified at 2:19 Thursday 15th February, 2007

Vichu

kakan14-Feb-07 23:48

kakan

14-Feb-07 23:48

Just a thought: I think (but haven't verified it), that a file has to be opened in binary mode for seek:s (and tell) to work properly.
Maybe that's your problem?

Alcohol. The cause of, and the solution to, all of life's problems - Homer Simpson

Vishvanathan15-Feb-07 0:09

15-Feb-07 0:09

Hi Kakan,

I am using text mode only.The text file contains upto 50 lines.During the process, the seekg function is not working at some times only.Most of the time, the file pointer seek to previous position successfully. I don't known the exact reason for this seek function behavior.

Is any other way to correct this problem?

Vichu

kakan15-Feb-07 0:17

kakan

15-Feb-07 0:17

Yes, what I already said: use binary mode for the file handling. Or rather: try, I still haven't checked that I'm correct (but I'm pretty sure I'm right).

The only thing you will have to put up with, using binary mode, is that you will get CR/LF-sequences as they exists in the file. That is, no conversion to a single \n.
An easy way to overcome this "problem" is to simply ignore all CR characters read from the file.

Alcohol. The cause of, and the solution to, all of life's problems - Homer Simpson

Vishvanathan15-Feb-07 0:34

15-Feb-07 0:34

I will try the binary mode operation and then update you.

Thanks kakan.

Vichu

Vishvanathan21-Feb-07 23:35

21-Feb-07 23:35

Hi kakan,

I fixed that seekg problem. Just I read the text file in binary mode rather than text mode.

Thank you for your response.

Regards,

Vichu

krmed15-Feb-07 0:41

krmed

15-Feb-07 0:41

If your file is really formatted as you have shown, you might want to use GetPrivateProfileString and SetPrivateProfileString instead. They are intended to handle files with the format you show

[SECTION]
Key=Value
Key2=Value2

Hope that helps.

Karl - WK5M
PP-ASEL-IA (N43CS)
PGP Key: 0xDB02E193
PGP Key Fingerprint: 8F06 5A2E 2735 892B 821C 871A 0411 94EA DB02 E193

Vishvanathan21-Feb-07 23:38