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Editorial Team
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Asked: 2026-06-05T06:24:09+00:00

I need to debug a C program that includes posix threads, socket programming (udp

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I need to debug a C program that includes posix threads, socket programming (udp client, server). I use ubuntu 12.04 and as IDE/SDK, Qt Creator 2.4.1 and Netbeans IDE 7.1.2. I know they use gdb for debugging.

When I start to debug my program, the program stops running after 5 min or so and neither Qt Creator or Netbeans output any error or warning, although I use debugging feature and my program suppose to listen for a UDP port.

I use printf for all line of my code, and I can see that my program works as it suppose to and listen the UDP port and waits. I can not figure the problem out why it stops without any reason and since IDEs that I am using do not show any debug error, warning, I can not think any reason.

I wonder if anyone can suggest me a debug program that monitors all/some variables and threads during the run time. Thank you.

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1 Answer

  1. Editorial Team

    gdb isn’t too comfortable but always available.

    To do runtime analysis of different types, especially checking memory access, Valgrind (see here for docs) might be the tool of choice.

    Update: I’m referring to *IX systems. For Windows gbd also works in the cygwin enviroment. Nativly there is VC Express, which is free and includes IDE and debugger.

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