RE: Can gdbmi process many commands at once?

[Marc Khouzam <marc dot khouzam at ericsson dot com>]

> From: gdb-owner@sourceware.org [gdb-owner@sourceware.org] on behalf of Vladimir Prus [vladimir@codesourcery.com]
> Sent: March 20, 2015 1:40 AM
> To: gdb@sourceware.org
> Subject: Re: Can gdbmi process many commands at once?
> 
> On 03/20/2015 04:22 AM, Bob Rossi wrote:
> > Hi,
> >
> > I'm trying to determine if GDB/MI has the capability of accepting and
> > working on multiple commands at once?
> >
> > For instance, if I run these commands,
> >      (gdb)
> >      123-interpreter-exec console "p argc"
> >      ~"$3 = 1"
> >      ~"\n"
> >      123^done
> >      (gdb)
> >      234-interpreter-exec console "p argv[1]"
> >      ~"$4 = 0x0\n"
> >      234^done
> >
> > Is there any mode in which the command,
> >      234-interpreter-exec console "p argv[1]"
> > will be worked on before
> >      123-interpreter-exec console "p argc"
> > is finished?
> >
> > The implication is that i'm expecting to have at most 1 command active
> > with GDB at a time. I'm curious if there is a situation where a front
> > end could have many active commands at a time. By active I mean,
> > I issue several commands, and then some time later, I get a response
> > on each of these, in any order.
> 
> Bob,
> 
> it is not possible with the current GDB. All of the commands are executed in the single
> thread GDB has, in the order they were received.
> 
> It is possible, in theory, that somebody will require GDB in node.js, or introduce asynchronous
> operation using boost.asio or similar, but that's quite unlikely scenario.

Eclipse, for example, is dependent on MI commands being processed as they are
sent.  It allows the front-end to send multiple commands at once (Eclipse goes up to 3) without
worrying about it causing problems of ordering.

Marc