From: Christian Biesinger <cbiesinger@google.com>
To: "Botond Dénes" <bdenes@scylladb.com>
Cc: gdb@sourceware.org
Subject: Re: Stack unwinding for green threads
Date: Mon, 6 Jul 2020 12:48:47 -0500 [thread overview]
Message-ID: <CAPTJ0XEsXOV=0gYUQrtuyDKjscSQp0gb3b1ZP6dwdTec8W4JeQ@mail.gmail.com> (raw)
In-Reply-To: <e442bf31fb064f476cc829cc71767f995495d071.camel@scylladb.com>
On Fri, Jul 3, 2020 at 4:51 AM Botond Dénes <bdenes@scylladb.com> wrote:
>
> Hi,
>
> I'm working on Scylla [1], an application which is built using the
> seastar framework [2]. This framework provides green threads [3] that
> have their own stacks. These threads are created with `setcontext()`
> and later we switch in/out using `setjmp()`/`longjmp()`.
>
> We have a collection of python scripts [4] to help debug Scylla, among
> these we have a utility command which allows switching in/out of these
> green threads in gdb. This command basically (tries) to emulate
> `setjmp()`/`longjmp()` in python, saving and restoring registers. There
> are several problems with this method. For starters it crashes gdb for
> some time now
It may be worth filing a bug for that at
https://sourceware.org/bugzilla/, crashing GDB sounds like a bug.
Christian
next prev parent reply other threads:[~2020-07-06 17:49 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-03 9:50 Botond Dénes
2020-07-03 10:16 ` Andrew Burgess
2020-07-03 17:36 ` Botond Dénes
2020-07-06 17:48 ` Christian Biesinger [this message]
2020-07-07 6:18 ` Botond Dénes
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='CAPTJ0XEsXOV=0gYUQrtuyDKjscSQp0gb3b1ZP6dwdTec8W4JeQ@mail.gmail.com' \
--to=cbiesinger@google.com \
--cc=bdenes@scylladb.com \
--cc=gdb@sourceware.org \
/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).