dev-cpp-users

Re: [Dev-C++] Multi-threaded debugging in Dev-C++

[Alfred P. R. <al...@ya...>]

I haven't tried it yet with Insight.  I did do an application back about a year ago that was a plug-in for GIMP (GIMP and plug-in where seperate threads).  It required a do-nothing loop with a variable that you could clear to exit the loop with once you attached it to GDB.  It was actually a pain in the butt, but GDB worked well once I figured out how to use it correctly.  This was the command line version of GDB instead of Insight, and was Dev-C++ 4.9.9.0 if I recall correctly.
 
The GDB entry is as follows:
 
#ifdef DEBUG
    do {
        shapefs.d_c();
    } while (d_l == TRUE); // Make this variable FALSE to continue with program flow.
#endif

void GIMP_SFS::d_c (void)
{ /* If DEBUG is defined, will loop in this function forever until attached by
    the debugger and the value d_l set to FALSE.
 */
    d_v = ~d_v; // Just something to do.
}
 

Behcet Emre Tezel <emr...@gm...> wrote:
How are people's experience so far debugging multi threaded C++
applications in Dev-C++?

-Emre
<snip>



Alfred P. Reaud
 

RE: [Dev-C++] Multi-threaded debugging in Dev-C++

[<Mat...@Ve...>]

Actually, I might have a link for you on this subject. I just got into GDB
the other day to debug some pointer code that went something like this:

void allocateTable(std::string* table)
{
   table = new string[50];
   // Do Stuff...
   return;
}

But then later in the code, when I used this stuff, it crashed if I
referenced the array. Long story short, it should have been coded this way:

void allocateTable(std::string*& table)
{
   table = new string[50];
   // Do Stuff...
   return;
}

I forgot to pass the pointer by reference so the change never went back into
the calling function's pointer! Anyhow, when I had to figure this out with
GDB, I found some docs that also covered the issue of working with threads.
I sorted them in relevance order.

http://sources.redhat.com/gdb/current/onlinedocs/gdb_5.html#SEC26
http://sources.redhat.com/gdb/current/onlinedocs/gdb_toc.html
http://www.gnu.org/software/gdb/documentation/

HTH!
Matt

-----Original Message-----
From: dev...@li...
[mailto:dev...@li...]On Behalf Of Behcet
Emre Tezel
Sent: Monday, March 21, 2005 6:26 PM
To: Dev-Cpp UserList
Subject: [Dev-C++] Multi-threaded debugging in Dev-C++


How are people's experience so far debugging multi threaded C++
applications in Dev-C++?

-Emre


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