Re: [Tuningforkvp-users] Timeline Graphs.

[Donnie J. <do...@da...>]

Hello Josh,

On Fri, Aug 8, 2008 at 9:13 AM, Joshua Auerbach <jo...@us...> wrote:

> David may want to answer as well, but since part of your question involves
> the C tracing library, which he may not know in detail, I will attempt an
> answer.
>
> > Honestly, I'm not sure what you mean by "primitive events".  The
> > closest description to "primitive events" I have found in the C
> > Trace Generation Library would be "AddSimpleEvent()".  Would
> > AddDoubleEvent() satisfy for generating the "primitive events" with
> > the "state" variable?
>
> Your goal is to generate events that can later be used to reconstruct a
> StateTimeInterval, which has a timestamp like any event (representing a
> start time), another long representing the end time, and a state,
> represented as an int.  Right now I believe you are just using two events,
> named appropriately, to cause an ordinary TimeInterval to be generated.
> Well, you would still use two events, given that that is working for you
> now.  One of them (either the start or the end) would continue to be a
> simple event with just a timestamp.  The other would be created with
> tfAddIntEvent so that it conveys both a timestamp and a state.  Whether you
> record the state at the start of the interval or at the end is up to you.
> You would also have to use tfAddEventType to define both events, but I
> think you are already doing that.  The difference is that one of the two
> events would have an additional int attribute.
>

I was attempting something similar but including the "state" in both the
start and stop events with tfAddIntEvent().  Thank you for the
clarification.


>
> > How do I go about creating an event typespace in Tuning Fork?  Use
> > "derive stream" in Tuning Fork?  I only see an "event typespace"
> > mentioned in the trace generation libraries, not in the Tuning Fork
> GUI/menus.
>
> This is a Java coding activity, not an end-user GUI activity.  In the
> source, you can get a sense of what is involved by
> looking at the EventTypeSpace class and its many subclasses (for example,
> use the type hierarchy view in Eclipse).  This may not be the way to go if
> you are not comfortable with Eclipse's plugin structure, since you need a
> plugin that extends the com.ibm.tuningfork.core.eventTypeSpaceFactory
> extension point in order to do this cleanly.  If you want to delve in, we
> can provide more guidance.  On the other hand, perhaps you just want to
> stay at the user level and wait for some more GUI support for what you want
> to do.
>
>
Hmm, at this point, it would definitely be preferred to stay at the user
level and hope for GUI support that provides the graphing capabilities that
I desire.  Any idea if the EventTypeSpace that I am needing may be added
soon?  :)

Both you and David have been extremely helpful.
Thank you.
__
Donnie