[lttng-dev] LTTng on Android

[Jan Glauber]

For long term I think it is the right thing to port LTTng to
bionic/android. What I mean is to get a running version without going
through this hassle,
e.g. taking a non-android buildroot and compile LTTng static with matching
flags for the android target. This should be possible, I just wanted
to ask if anyone had success going this way or if there is something I'm
missing.

thx,
Jan


2014-07-01 19:35 GMT+02:00 Charles Brière <charles.briere at polymtl.ca>:

> Hi Jan,
>
> Even when disabling ust while configuring, there is still some "shm_open"
> (need to be replaced by ashmem) and "pthread_cancel" calls within the tools
> code. But I don't understand what you mean by using static linking. How
> would that help in the case where you are missing headers?
>
> Cheers,
> Charles
>
>
> On Tue, Jul 1, 2014 at 2:55 AM, Jan Glauber <jan.glauber at gmail.com> wrote:
>
>> Hi Charles,
>>
>> thanks for your answer. So the main problem seems to be bionic and
>> missing headers of the NDK. How about compiling LTTng user-space as static
>> to avoid these issues?
>>
>> Cheers,
>> Jan
>>
>>
>> 2014-06-30 19:47 GMT+02:00 Charles Brière <charles.briere at polymtl.ca>:
>>
>> Hi Jan,
>>>
>>> I was part of the students working on it a year ago. We had kernel
>>> tracing working at the time, though we had some trouble as bionic doesn't
>>> have pthread_cancel. I think we had replaced that by a dummy pthread_kill
>>> at the time and that is part of the reason our patches were not accepted.
>>>
>>> I recently resent some patches for libURCU so this should not be a
>>> problem to compile for android out of master branch, even with NDK.
>>>
>>> I have been trying lately to get lttng-tools compiling out of NDK
>>> (faster than checking out the whole Android tree) but there is a lot of
>>> headers missing, most important are related to shared memory. I was about
>>> to continue working on it, this time with the whole Android tree, but ran
>>> out of disk space so had to postpone until I receive some more storage. I
>>> hope I'll be able to release patches within the next month.
>>>
>>> Cheers,
>>> Charles
>>>
>>>
>>> On Mon, Jun 30, 2014 at 7:03 AM, Jan Glauber <jan.glauber at gmail.com>
>>> wrote:
>>>
>>>> Hi LTTngers,
>>>>
>>>> I want to ask about the status of LTTng on Android. Is anyone using it
>>>> already? I remember there was some student project to get LTTng running
>>>> with bionic but I don't know how far they got.
>>>>
>>>> thanks, Jan
>>>>
>>>> _______________________________________________
>>>> lttng-dev mailing list
>>>> lttng-dev at lists.lttng.org
>>>> http://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev
>>>>
>>>>
>>>
>>
>
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