[lttng-dev] Request change name of function lookup_enum in libbabeltrace to make GDB use this lib

[Hui Zhu]

On Wed, Dec 5, 2012 at 8:08 PM, Mathieu Desnoyers
<mathieu.desnoyers at efficios.com> wrote:
> * Hui Zhu (teawater at gmail.com) wrote:
>> Hi,
>>
>> I am working on add CTF support to GDB.  You can see my patch review threads in:
>> http://sourceware.org/ml/gdb-patches/2012-11/msg00552.html
>> http://sourceware.org/ml/gdb-patches/2012-11/msg00554.html
>> http://sourceware.org/ml/gdb-patches/2012-11/msg00553.html
>> http://sourceware.org/ml/gdb-patches/2012-11/msg00555.html
>> http://sourceware.org/ml/gdb-patches/2012-11/msg00556.html
>>
>> To make GDB support CTF read, I use libbabeltrace with GDB.  You can
>> see the patch in
>> http://sourceware.org/ml/gdb-patches/2012-11/msg00555.html.
>> I have a issue is  libbabeltrace have a function called lookup_enum
>> that is same with a GDB function.
>> I change the function name of GDB to handle this issue in my patch.
>>
>> But Tom said let libbabeltrace to change function name is better.
>> So I send this mail to ask do you mind change the function name of
>> lookup_enum?   If you can change the function name that will be really
>> helpful for us.  Thanks a lot.
>> And I post a patch about change the function name in libbabeltrace.
>
> I'm CCing Julien Desfossez on this one. From what I see,
> include/babeltrace/types.h is not included into the system, so it should
> not be considered to be a public header of libbabeltrace.
>
> Julien, is there an publically exposed babeltrace API that performs
> something similar to the internal lookup_enum() ?
>
> Hui, are you using other functions from include/babeltrace/types.h ?

No, my patch didn't use any function in this file.

Thanks,
Hui

>
> Thanks,
>
> Mathieu
>
>>
>> Thanks,
>> Hui
>>
>> --- a/formats/ctf/ctf.c
>> +++ b/formats/ctf/ctf.c
>> @@ -423,7 +423,7 @@ int ctf_read_event(struct stream_pos *pp
>>               } else {
>>                       struct definition_enum *enum_definition;
>>
>> -                     enum_definition = lookup_enum(&stream->stream_event_header->p, "id", FALSE);
>> +                     enum_definition = ctf_lookup_enum(&stream->stream_event_header->p,
>> "id", FALSE);
>>                       if (enum_definition) {
>>                               id = enum_definition->integer->value._unsigned;
>>                       }
>> --- a/include/babeltrace/types.h
>> +++ b/include/babeltrace/types.h
>> @@ -513,7 +513,7 @@ struct definition *lookup_definition(con
>>  struct definition_integer *lookup_integer(const struct definition *definition,
>>                                         const char *field_name,
>>                                         int signedness);
>> -struct definition_enum *lookup_enum(const struct definition *definition,
>> +struct definition_enum *ctf_lookup_enum(const struct definition *definition,
>>                                   const char *field_name,
>>                                   int signedness);
>>  struct definition *lookup_variant(const struct definition *definition,
>> --- a/types/types.c
>> +++ b/types/types.c
>> @@ -634,7 +634,7 @@ struct definition_integer *lookup_intege
>>       return lookup_integer;
>>  }
>>
>> -struct definition_enum *lookup_enum(const struct definition *definition,
>> +struct definition_enum *ctf_lookup_enum(const struct definition *definition,
>>                                   const char *field_name,
>>                                   int signedness)
>>  {
>>
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>
> --
> Mathieu Desnoyers
> Operating System Efficiency R&D Consultant
> EfficiOS Inc.
> http://www.efficios.com