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Date: Tue, 07 May 2013 04:43:00 -0000
Message-ID: <CADPb22Q0rQCQMee992CZBPHkjJOvBkCZMhqHx0V_y7v=VWDORA@mail.gmail.com>
Subject: Re: Timer
From: Doug Evans <dje@google.com>
To: =?ISO-8859-1?Q?Marc_Br=FCnink?= <marc@nus.edu.sg>
Cc: gdb <gdb@sourceware.org>
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On Mon, May 6, 2013 at 2:52 AM, Marc Br=FCnink <marc@nus.edu.sg> wrote:
> I want to execute a piece of code at regular intervals. Actually I'm samp=
ling $pc.
> (let's not go into detail why I use gdb)
>
> My current solution just starts another process that sends a SIGTRAP to t=
he debugged application. Using a simple script I can print the $pc.
>
> However, I just realised that this approach does not work too well. If gd=
b is stopped due to a breakpoint it will interpret the received SIGTRAP as =
another hit of the very same breakpoint.
>
> Reproduce:
> 1. Attach to any program
> 2. Create any breakpoint
> 3. Wait until breakpoint is hit
> 4. Send SIGTRAP to debugged application
> 5. continue
>
> Actually, now that I think about it, I should have anticipated this behav=
iour.
> Is there a better way to execute a piece of code at regular intervals?

bash$ man setitimer
?