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Posted to dev@perl.apache.org by Geoffrey Young <ge...@modperlcookbook.org> on 2003/03/02 00:20:18 UTC
Re: cvs commit: modperl-docs/src/docs/2.0/devel/debug c.pod
> +=head1 Defining and Using Custom gdb Macros
cool. this partially answers one of my offline questions :)
just one thing...
> +
> +GDB provides two ways to store sequences of commands for execution as
> +a unit: user-defined commands and command files. See:
> +http://sources.redhat.com/gdb/current/onlinedocs/gdb_21.html
> +
> +Apache 2.0 source comes with a nice pack of macros and can be found in
> +I<httpd-2.0/.gdbinit>. To use it issue:
> +
> + gdb> source /wherever/httpd-2.0/.gdbinit
> +
> +Now if for example you want to dump the contents of the bucket
> +brigade, you can do:
> +
> + gdb> dump_brigade my_brigade
> +
> +where C<my_brigade> is the pointer to the bucket brigade that you want
> +to debug.
where can you find a list of the name of the brigades? say I want to
dump all the output filters - what are they called or, better, where
do I look for them?
--Geoff
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Re: cvs commit: modperl-docs/src/docs/2.0/devel/debug c.pod
Posted by Stas Bekman <st...@stason.org>.
Geoffrey Young wrote:
>
>> +=head1 Defining and Using Custom gdb Macros
>
>
> cool. this partially answers one of my offline questions :)
that's why I've added it ;)
> just one thing...
>
>> +
>> +GDB provides two ways to store sequences of commands for execution as
>> +a unit: user-defined commands and command files. See:
>> +http://sources.redhat.com/gdb/current/onlinedocs/gdb_21.html
>> +
>> +Apache 2.0 source comes with a nice pack of macros and can be found in
>> +I<httpd-2.0/.gdbinit>. To use it issue:
>> +
>> + gdb> source /wherever/httpd-2.0/.gdbinit
>> +
>> +Now if for example you want to dump the contents of the bucket
>> +brigade, you can do:
>> +
>> + gdb> dump_brigade my_brigade
>> +
>> +where C<my_brigade> is the pointer to the bucket brigade that you want
>> +to debug.
>
>
> where can you find a list of the name of the brigades? say I want to
> dump all the output filters - what are they called or, better, where do
> I look for them?
just like inside a perl debugger, you have to be inside a scope which has
them. So if for example you want to dump output filters, you could break at:
modperl_wbucket_pass once you hit that bp, do:
gdb> dump_filters *(wb->filters)
of course there are many other places where you could do that (most inside
apache core).
Let me know if this clarifies the issue.
__________________________________________________________________
Stas Bekman JAm_pH ------> Just Another mod_perl Hacker
http://stason.org/ mod_perl Guide ---> http://perl.apache.org
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