[lttng-dev] Writing .tp files for lttng-gen-tp

[Boisvert, Sebastien]

Hi,

I changed the provider name to thorium_message.

I also tried using a macro in the template file, but the define alone
breaks things.

Template file: https://github.com/sebhtml/biosal/blob/master/engine/thorium/tracepoints/lttng/message.tp (the macro is commented)


Uncommenting the macro produces these warnings:

Warning: different domain provided (int,thorium_message)
Warning: different domain provided (int,thorium_message)
Warning: different domain provided (int,thorium_message)
Warning: different domain provided (int,thorium_message)
Warning: different domain provided (int,thorium_message)
Warning: different domain provided (int,thorium_message)
Warning: different domain provided (int,thorium_message)
Warning: different domain provided (int,thorium_message)
Warning: different domain provided (int,thorium_message)
Warning: different domain provided (int,thorium_message)
Warning: different domain provided (int,thorium_message)
Warning: different domain provided (int,thorium_message)
Warning: different domain provided (int,thorium_message)
Warning: different domain provided (int,thorium_message)
Warning: different domain provided (int,thorium_message)
Warning: different domain provided (int,thorium_message)
Warning: different domain provided (int,thorium_message)
Warning: different domain provided (int,thorium_message)

And the linker fails.

> ________________________________________
> From: Philippe Proulx [eeppeliteloop at gmail.com]
> Sent: Friday, October 17, 2014 9:36 PM
> To: Boisvert, Sebastien
> Cc: lttng-dev at lists.lttng.org
> Subject: Re: [lttng-dev] Writing .tp files for lttng-gen-tp
> On Fri, Oct 17, 2014 at 5:39 PM, Boisvert, Sebastien <boisvert at anl.gov> wrote:
> > Hi,
> >
> > I wrote a big .tp file to define numerous tracepoints that only differ in the event name.
> > They all take the same arguments and they all dump the same fields.
> >
> >
> > .tp file: https://github.com/sebhtml/biosal/blob/master/engine/thorium/tracepoints/lttng/message.tp
> >
> >
> > Is there a more compact way of doing that ?
> Yes; note that a template file is just part of an eventual C header
> file, so C preprocessor
> stuff is accepted. This should work:
> #include <engine/thorium/message.h>
> #define THORIUM_MSG_TP(name) \
> TRACEPOINT_EVENT( \
> message, \
> name, \
> TP_ARGS( \
> struct thorium_message *, msg \
> ), \
> TP_FIELDS( \
> ctf_integer(int, message_number, msg->number) \
> ctf_integer(int, message_action, msg->action) \
> ctf_integer(int, message_count, msg->count) \
> ctf_integer(int, message_source_actor, msg->source_actor) \
> ctf_integer(int, message_destination_actor,
> msg->destination_actor) \
> ctf_integer(int, message_source_node, msg->source_node) \
> ctf_integer(int, message_destination_node,
> msg->destination_node) \
> ) \
> )
> THORIUM_MSG_TP(actor_send)
> THORIUM_MSG_TP(node_send)
> THORIUM_MSG_TP(worker_send)
> THORIUM_MSG_TP(worker_receive)
> THORIUM_MSG_TP(worker_send_mailbox)
> THORIUM_MSG_TP(worker_send_schedule)
> THORIUM_MSG_TP(worker_pool_enqueue)
> THORIUM_MSG_TP(worker_pool_dequeue)
> THORIUM_MSG_TP(worker_enqueue_message)
> THORIUM_MSG_TP(actor_receive)
> THORIUM_MSG_TP(worker_dequeue_message)
> THORIUM_MSG_TP(node_send_system)
> THORIUM_MSG_TP(node_receive)
> THORIUM_MSG_TP(node_receive_message)
> THORIUM_MSG_TP(node_send_dispatch)
> THORIUM_MSG_TP(node_dispatch_message)
> THORIUM_MSG_TP(transport_send)
> THORIUM_MSG_TP(transport_receive)
> Please write back if it does not.
> BTW, I would suggest that your tracepoint provider name (currently `message`) be
> more specific as to what your application really is, e.g., `thorium_msg`.
> Phil
> >
> >
> >                 Sébastien
> >
> >
> > _______________________________________________
> > lttng-dev mailing list
> > lttng-dev at lists.lttng.org
> > http://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev