From: Andrew Dinn <adinn@redhat.com>
To: hilbert <swdtian@163.com>
Cc: Luis Machado <luis.machado@arm.com>, gdb@sourceware.org
Subject: Re: How does GDB get the function call stack
Date: Tue, 16 Aug 2022 13:48:57 +0100 [thread overview]
Message-ID: <6cfef95e-106b-0e06-368e-a340e8d77665@redhat.com> (raw)
In-Reply-To: <7ffede02.9b19.182a627c39c.Coremail.swdtian@163.com>
On 16/08/2022 11:16, hilbert wrote:
> @Andrew Dinn
> Now I totally understand. Thank you very much for your patience.
You are very welcome.
> By the way, when a multithreaded program hits a breakpoint, GDB can use
> the command: /*thread ID */
> /**/to switch between threads arbitrarily, and view the memory and
> other information of each thread.
> This is also implemented using ptrace, right?
I would assume it relies on ptrace to stop all the threads. However, I
have almost zero knowledge of how gdb actually controls the inferior
process (my knowledge of gdb is exclusively on the gdb-process side of
the fence). You will need to find someone else to obtain a definitive
answer.
regards,
Andrew Dinn
-----------
Red Hat Distinguished Engineer
Red Hat UK Ltd
Registered in England and Wales under Company Registration No. 03798903
Directors: Michael Cunningham, Michael ("Mike") O'Neill
next prev parent reply other threads:[~2022-08-16 12:49 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-16 7:43 hilbert
2022-08-16 7:56 ` Luis Machado
2022-08-16 9:19 ` hilbert
2022-08-16 9:33 ` Andrew Dinn
2022-08-16 10:16 ` hilbert
2022-08-16 12:48 ` Andrew Dinn [this message]
2022-08-16 13:18 ` hilbert
2022-08-16 13:27 ` Luis Machado
2022-08-16 13:46 ` hilbert
2022-08-18 14:05 ` Andrew Burgess
2022-08-19 1:57 ` hilbert
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