[ltt-dev] [RFC] UST instrumentation API

[nils.carlson@ludd.ltu.se (Nils Carlson)]

On Apr 19, 2011, at 11:56 PM, Mathieu Desnoyers wrote:
>
> How about:
>
> "TRACEPOINT_EVENT()" and "#define TRACEPOINT_CREATE" ?
>
> Ideally, I'd like to settle this API and release a UST 0.13 this week,
> so people who want to start instrumenting their code can use the new
> Markers API while we move to the TRACEPOINT_EVENT infrastructure.
>

Tracepoint event sounds good... you sort of connect tracepoints with  
events then.... :-)

TRACEPOINT_CREATE would be what exactly? Afraid I got a bit lost...

/Nils

> Thanks,
>
> Mathieu
>
>>
>>>
>>>>
>>>>>
>>>>> UST Markers (main API members):
>>>>>
>>>>> #include<ust/marker.h>
>>>>>
>>>>> ust_marker(name, "fmt", ...)
>>>>> UST_MARKER_NOARGS
>>>>> GET_UST_MARKER()
>>>>> DEFINE_UST_MARKER(name, ...)
>>>>> ust_marker_probe_unregister()
>>>>> ust_marker_probe_register()
>>>>> ust_marker_synchronize_unregister()
>>>>> UST_MARKER_LIB
>>>>>
>>>>> Will be eventually phased-out with the new TRACEPOINT_TEMPLATE()  
>>>>> and
>>>>> CTF:
>>>>> DEFINE_UST_MARKER_TP()
>>>>> ust_marker_tp()
>>>>>
>>>>
>>>> No problem. Simpler is better and this API will be UST specific so
>>>> rtfm at that point :).
>>>
>>> Just one question, these are UST internal right? I mean, not to be
>>> confused with the ustctl functions?
>>
>> Not sure I understand your question. But the "ust_marker()" is an API
>> exposed to application willing to do ad-hoc tracing relying  
>> directly on
>> UST. These application libraries using ust_marker() would have to  
>> define
>> UST_MARKER_LIB. UST_MARKER_NOARGS is also needed. For the rest, I  
>> agree
>> that it's more UST-internal.
>>
>> Thanks,
>>
>> Mathieu
>>
>>>
>>> /Nils
>>>
>>>>
>>>> Thanks
>>>> David
>>>>
>>>>> Feedback is welcome,
>>>>>
>>>>> Thanks,
>>>>>
>>>>> Mathieu
>>>>>
>>>>
>>>> -- 
>>>> David Goulet
>>>> LTTng project, DORSAL Lab.
>>>>
>>>> PGP/GPG : 1024D/16BD8563
>>>> BE3C 672B 9331 9796 291A  14C6 4AF7 C14B 16BD 8563
>>>>
>>>> _______________________________________________
>>>> ltt-dev mailing list
>>>> ltt-dev at lists.casi.polymtl.ca
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>>>
>>
>> -- 
>> Mathieu Desnoyers
>> Operating System Efficiency R&D Consultant
>> EfficiOS Inc.
>> http://www.efficios.com
>
> -- 
> Mathieu Desnoyers
> Operating System Efficiency R&D Consultant
> EfficiOS Inc.
> http://www.efficios.com

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