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From: Hui Zhu <teawater@gmail.com>
Date: Thu, 26 Nov 2009 15:54:00 -0000
Message-ID: <daef60380911260030j960f4cfoee3789f6284f34a8@mail.gmail.com>
Subject: Re: A question about gdb script
To: Pedro Alves <pedro@codesourcery.com>, Daniel Jacobowitz <drow@false.org>,  	Michael Snyder <msnyder@vmware.com>
Cc: gdb@sourceware.org
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On Thu, Nov 26, 2009 at 00:06, Pedro Alves <pedro@codesourcery.com> wrote:
> On Wednesday 25 November 2009 15:11:51, Daniel Jacobowitz wrote:
>> > 2. =A0Sometime, I want just record a function, I want:
>> > b functon_name
>> > commands
>> > silent
>> > record
>> > finish
>> > #Maybe we can record save in this line, this is first question.
>> > record stop
>> > end
>> > But when I really do it. =A0I found that gdb stop running after finish.
>> >
>> > Could you help me with them?
>>
>> This is a known limitation of breakpoint commands. =A0It's very
>> difficult.
>
> Try using the hook-stop instead. =A0Something like this:
>
> =A0set $stop_recording_on_next_stop=3D0
>
> =A0b functon_name
> =A0commands
> =A0silent
> =A0record
> =A0set $stop_recording_on_next_stop=3D1
> =A0finish
> =A0end
>
> =A0define hook-stop
> =A0 if $stop_recording_on_next_stop
> =A0 =A0 set $stop_recording_on_next_stop=3D0
> =A0 =A0 record save
> =A0 =A0 record stop
> =A0 =A0 end
> =A0 end
>

Cool.  I change hook-stop to:
define hook-stop
   if $stop_recording_on_next_stop
     set $stop_recording_on_next_stop=3D0
     record save
     record stop
    c
     end
   end

It looks not bad, but got a lot of:
---Type <return> to continue, or q <return> to quit---q

If you don't mind, I will post a patch to change each fprintf_filtered
in record.c to fprintf_unfiltered.

Thanks,
Hui