From: Simon Marchi <simark@simark.ca>
To: Christian Groessler <chris@groessler.org>,
"gdb@sourceware.org" <gdb@sourceware.org>
Cc: John Baldwin <jhb@FreeBSD.org>
Subject: Re: debugging a program which spawns multiple children
Date: Tue, 13 Feb 2018 01:24:00 -0000 [thread overview]
Message-ID: <9334b884-9d22-2352-7f2d-fe75550b3a45@simark.ca> (raw)
In-Reply-To: <b30d21ed-f035-27f4-0d2c-3269d99fef13@groessler.org>
On 2018-02-12 08:19 PM, Christian Groessler wrote:
> Hi,
>
> I'm trying to debug a problem in FreeBSD's "dump" command. The dump
> command creates 4 or 5 child processes,
> and in my use case one of them gets a SIGSEGV.
>
> Is it possible to monitor all spawned processes simultaneously? I'm
> currently using gdb version 7.12.1 from the FreeBSD ports.
> I would have to problem to use a newer version of gdb and compile it
> locally.
>
> regards,
> chris
>
Hi Christian,
If GDB for FreeBSD supports it, you can keep debugging the parent process as
well as child processes by using "set detach-on-fork off". John (in CC) may
give more info about the support for multi process debugging with FreeBSD.
You might want to read more about the "all-stop" vs "non-stop" modes in the GDB
documentation and their related settings.
Simon
next prev parent reply other threads:[~2018-02-13 1:24 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-02-13 1:19 Christian Groessler
2018-02-13 1:21 ` Christian Groessler
2018-02-13 1:24 ` Simon Marchi [this message]
2018-02-15 23:16 ` John Baldwin
2018-02-16 11:34 ` Christian Groessler
2018-02-21 1:33 ` John Baldwin
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