[RFA 00/08] multi-process support

[RFA 00/08] multi-process support

[Pedro Alves]

Hi,

This series of patches adds basic multi-process support to GDB, and
implement multi-process support in the remote target.

"Basic" above means, just enough multi-process to support targets where all
processes load the same symbols at the same addresses, and, all process
share the list of loaded libraries, and, the debug api manages to
make inserted breakpoints visible to all processes.  We happen to have
been working with such a system -- Ericsson DICOS.

We also have been working on multi-process + non-stop support for
linux gdbserver, which builds on top of this support.  That will come
in later.

This patch series start adding support for the above by doing the
following things:

  - Adding a "struct inferior", and moving per-inferior things into this
    structure.

  - Adding an inferior list, and expose it similarly to the gdb thread
    list.

  - Making all targets add and remove inferiors from the list.

  - Implement the multi-process remote protocol extensions.

  - Fix up a couple of exposed issues here and there.

-- 
Pedro Alves

Re: [RFA 00/08] multi-process support

[Eli Zaretskii]

> From: Pedro Alves <pedro@codesourcery.com>
> Date: Fri, 12 Sep 2008 16:36:06 +0100
> 
> "Basic" above means, just enough multi-process to support targets where all
> processes load the same symbols at the same addresses, and, all process
> share the list of loaded libraries, and, the debug api manages to
> make inserted breakpoints visible to all processes.  We happen to have
> been working with such a system -- Ericsson DICOS.

Is loading libraries at the same address widely used, or is it a
feature of a single exotic system?

Re: [RFA 00/08] multi-process support

[Pedro Alves]

On Friday 12 September 2008 17:03:21, Eli Zaretskii wrote:

> Is loading libraries at the same address widely used, or is it a
> feature of a single exotic system?

I don't know.

-- 
Pedro Alves

Re: [RFA 00/08] multi-process support

[Daniel Jacobowitz]

On Fri, Sep 12, 2008 at 05:23:10PM +0100, Pedro Alves wrote:
> On Friday 12 September 2008 17:03:21, Eli Zaretskii wrote:
> 
> > Is loading libraries at the same address widely used, or is it a
> > feature of a single exotic system?
> 
> I don't know.

I've seen it in some embedded operating systems, too.  It was very
convenient that DICOS had this property; it let us create the work
that Pedro's just posted, which is a stepping stone towards the
multiple address space version that we are currently working on.

-- 
Daniel Jacobowitz
CodeSourcery

Re: [RFA 00/08] multi-process support

[Pedro Alves]

I've checked this series in.  Thanks,

-- 
Pedro Alves