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Re: [linuxtools-dev] Add more colomns in Lttng event view
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Definitely.
The base class (TmfEventsView) holds the key widget (TmfEventsTable) which handles, among other things, the searching and filtering over "arbitrarily large files" (up to 2^32-1 records) , and where the event fields (or columns) are defined. Since these are base classes, they implement the common stuff (and common fields as defined in TmfEvent).
In the LTTng part, we show how to extend these classes for your specific needs. Have a look at EventsView and EventsTable for an example on how to do it for your specific event types. This one displays the fields of an LTTngEvent.
Essentially, you need to extend TmfEventTable where you override the ordered list of columns and provide a method to extract the fields from you specific event (in the order of the columns you specified). You also need to override the TmfEventsView to instantiate the right table/viewer.
Note that, today, this is great for homogeneous events (same fields) but not that fantastic if you have heterogeneous events because you have to revert to some common denominator.
2 things should happen in the future:
- Support for heterogeneous events in the same table
- Use an extension point to specify the actual viewer to associate to an event type
In summary, look at the following classes:
-org.eclipse.linuxtools.tmf.ui.views.events.TmfEventsView
-org.eclipse.linuxtools.tmf.ui.views.events.TmfEventsTable
-org.eclipse.linuxtools.lttng.ui.views.events.EventsView
-org.eclipse.linuxtools.lttng.ui.views.events.EventsTable
If you need further help for the searching/filtering requests, please let us know.
Regards,
/fc
On Thu, Dec 15, 2011 at 5:10 AM, Li Yang-R58472
<r58472@xxxxxxxxxxxxx> wrote:
Hi,
We are very interested in the Lttng tool for eclipse, but the event view shows rather limited columns. We'd like to use the event view for filtering the massive events with certain criteria(e.g. with certain PID). Is there a easy way to expand the columns in the event view?
Thanks,
Leo
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Francois
