From: Andrew Cagney <ac131313@redhat.com>
To: Jason Molenda <jmolenda@apple.com>
Cc: "Daniel Jacobowitz" <drow@mvista.com>,
"Gerrit Bruchhäuser" <gbruchhaeuser@gmx.de>,
gdb@sources.redhat.com
Subject: Re: backtrace C-API
Date: Tue, 22 Apr 2003 17:05:00 -0000 [thread overview]
Message-ID: <3EA57648.5080704@redhat.com> (raw)
In-Reply-To: <8ECA5848-745C-11D7-8838-000393D457E2@apple.com>
>
> On Monday, April 21, 2003, at 02:04 PM, Andrew Cagney wrote:
>
> On Fri, Apr 18, 2003 at 02:33:27PM +0200, Gerrit Bruchhäuser wrote:
> Hello,
> is there any C-API function in libgdb.a (or some other library) which
> returns a call stack (something 'bt' like)?
> No; but you might find backtrace() useful if you're on a
> glibc-supported platform.
>
> But there probably should. How hard is it to create a `target-self' that uses local memory, and a jump-buf for registers? The tricky bit, I see, is the symbol table assuming a single global structure.
>
>
> This falls into the category of Nasty Hack, but I helped someone on our compiler group with a similar problem a long time ago. I had them add a call at the site of interest which (a) got the current process' pid, (b) wrote a little gdb command script into a /tmp file which would attach to the process, bt, and detach, (c) ran system ("gdb --command=/tmp...") in the function, and (d) removed the file from /tmp.
>
> I'm sure there are better ways to handle all this, but it took about five minutes to do all this correctly -- for a one-off problem, it wasn't a bad solution. They captured stdout, massaged the output a bit, and had the info they needed.
It's actually a well accepted technique. I first learnt about it on a
web page somewhere.
Andrew
prev parent reply other threads:[~2003-04-22 17:05 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-04-18 12:33 Gerrit Bruchhäuser
2003-04-18 13:39 ` Daniel Jacobowitz
2003-04-21 21:05 ` Andrew Cagney
2003-04-22 0:51 ` Jason Molenda
2003-04-22 17:05 ` Andrew Cagney [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=3EA57648.5080704@redhat.com \
--to=ac131313@redhat.com \
--cc=drow@mvista.com \
--cc=gbruchhaeuser@gmx.de \
--cc=gdb@sources.redhat.com \
--cc=jmolenda@apple.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).