Re: [RFA v3] enable/disable sub breakpoint range

[Pedro Alves <palves@redhat.com>]

On 10/20/2017 01:17 PM, Xavier Roirand wrote:
> Hello,
> 
> Le 10/3/17 à 6:02 PM, Pedro Alves a écrit :
>> On 10/03/2017 03:50 PM, Eli Zaretskii wrote:
>>>> From: Xavier Roirand <roirand@adacore.com>
>>
>> I'm wondering whether it wouldn't be better to expand this section
>> of the manual:
>>
>>   @cindex breakpoint ranges
>>   @cindex breakpoint lists
>>   @cindex ranges of breakpoints
>>   @cindex lists of breakpoints
>>   Some @value{GDBN} commands accept a space-separated list of breakpoints
>>   on which to operate.  A list element can be either a single
>> breakpoint number,
>>   like @samp{5}, or a range of such numbers, like @samp{5-7}.
>>   When a breakpoint list is given to a command, all breakpoints in
>> that list
>>   are operated on.
>>
>> To describe locations as well.  Similarly to how we describe
>> "thread ID lists", where we have:
>>
>>   @anchor{thread ID lists}
>>   @cindex thread ID lists
>>   Some commands accept a space-separated @dfn{thread ID list} as
>>   argument.  A list element can be:
>>
>>   @enumerate
>>   @item
>>   A thread ID as shown in the first field of the @samp{info threads}
>>   display, with or without an inferior qualifier.  E.g., @samp{2.1} or
>>   @samp{1}.
>>
>>   @item
>>   A range of thread numbers, again with or without an inferior
>>   qualifier, as in @var{inf}.@var{thr1}-@var{thr2} or
>>   @var{thr1}-@var{thr2}.  E.g., @samp{1.2-4} or @samp{2-4}.
>>
>>   @item
>>   All threads of an inferior, specified with a star wildcard, with or
>>   without an inferior qualifier, as in @var{inf}.@code{*} (e.g.,
>>   @samp{1.*}) or @code{*}.  The former refers to all threads of the
>>   given inferior, and the latter form without an inferior qualifier
>>   refers to all threads of the current inferior.
>>
>>   @end enumerate
>>
>>   For example, if the current inferior is 1, and inferior 7 has one
>>   thread with ID 7.1, the thread list @samp{1 2-3 4.5 6.7-9 7.*}
>>   includes threads 1 to 3 of inferior 1, thread 5 of inferior 4, threads
>>   7 to 9 of inferior 6 and all threads of inferior 7.  That is, in
>>   expanded qualified form, the same as @samp{1.1 1.2 1.3 4.5 6.7 6.8 6.9
>>   7.1}.
>>
>> Then commands that accept a thread ID list xref here.
>>
>> We'd do the same to breakpoint commands, i.e., commands that take
>> an breakpoint/location list would xref the description of breakpoint
>> lists.
>>
>> See commit 5d5658a1d3c3 ("Per-inferior/Inferior-qualified thread IDs")
>> for how that looked like before support for '*' ranges was added.
>>
>> (And now I wonder whether it'd make sense to model the breakpoint
>> number parsing on a simplified version of the thread ID number
>> parsing.  See gdb/tid-parse.h / tid_range_parser.)
>>
> 
> Unfortunately I don't have enough time to work on a simplified version
> of the thread id number parsing in order to provide this enable/disable
> sub range feature. What I can add in my current patch is the support for
> .* notation if you think this is something really useful. Let me know
> what do you think so I can propose a new patch.

Eh, I never suggested to add the '*' parsing.  Above I explicitly
pointed at the commit _before_ that, even, so you could see how the
documentation looked like then.

Thanks,
Pedro Alves