GSoC Project | Basic Support for Trace Compass

[Ravindra Kumar Meena]

>
> Yes, the values are there, but babeltrace cannot deduce the clock
> source. In the LTTNG it displays it like this:
>
> [17:50:44.093076317] (+0.000002071)
>
Okay. The timestamp_begin and timestamp_end member in packet.context are
for the whole recording process.

The timestamp_begin means first record item recorded in the whole process
per CPU.
The timestamp_end means the last record item recorded in the whole process
per CPU.

So I moved the timestamp value of individual record item in event.header

https://github.com/rmeena840/rtems-tools/commit/0542b83c5f28ad2d005e8c0d86c0f4a13d43fee9

Now, babeltrace is able to print timestamp value now.

It looks like this:

babeltrace . | head

[19:16:31.180116542] (+0.000000000) Record_Item RTEMS_RECORDING_EVENT: {
cpu_id = 17 }, { events = ( "RTEMS_RECORD_THREAD_STACK_CURRENT" : container
= 209 ), data = 5856 }
[19:16:31.180116542] (+0.000000000) Record_Item RTEMS_RECORDING_EVENT: {
cpu_id = 17 }, { events = ( "RTEMS_RECORD_THREAD_SWITCH_IN" : container =
215 ), data = 151060500 }
[19:16:31.180154588] (+0.000038046) Record_Item RTEMS_RECORDING_EVENT: {
cpu_id = 17 }, { events = ( "RTEMS_RECORD_THREAD_SWITCH_OUT" : container =
216 ), data = 151060500 }
[19:16:31.180154588] (+0.000000000) Record_Item RTEMS_RECORDING_EVENT: {
cpu_id = 17 }, { events = ( "RTEMS_RECORD_THREAD_STACK_CURRENT" : container
= 209 ), data = 7392 }
[19:16:31.180154588] (+0.000000000) Record_Item RTEMS_RECORDING_EVENT: {
cpu_id = 17 }, { events = ( "RTEMS_RECORD_THREAD_SWITCH_IN" : container =
215 ), data = 167837739 }
[19:16:31.180174232] (+0.000019644) Record_Item RTEMS_RECORDING_EVENT: {
cpu_id = 17 }, { events = ( "RTEMS_RECORD_THREAD_SWITCH_OUT" : container =
216 ), data = 167837739 }
[19:16:31.180174232] (+0.000000000) Record_Item RTEMS_RECORDING_EVENT: {
cpu_id = 17 }, { events = ( "RTEMS_RECORD_THREAD_STACK_CURRENT" : container
= 209 ), data = 5856 }


-- 
*Ravindra Kumar Meena*,
B. Tech. Computer Science and Engineering,
Indian Institute of Technology (Indian School of Mines)
<https://www.iitism.ac.in/>, Dhanbad
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