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Compl Yue Compl
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 Posted: Sun Oct 05, 2008 3:19 am Post subject: Call Sequence Tracing with profiler |
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Hi list,
I've spent a day or so investigating the possibility to trace Java
method invocation sequences (to understand behaviors of an existing
application upon some user actions) .
Docs show Eclipse TPTP has some ability to generate Sequence Diagram
in UML as profiling, but I've never succeeded with TPTP even to start
profiling.
The closest result I achieved so far is to view a CPU snapshot in NB
profiler by sorting with the "Call Tree" column, however that won't
show the exact order of method invocations in time sequence.
I'd downloaded a source zip of whole NB and digged a little into
profiler, my first idea had been to add a "Time Occurred" or "Sequence
No." column to have the CCT sortable by occurrence sequence, but found
no data field to back it. And I see the CCT nodes are *physically*
reordered on sorting, and there's a default sort, so the *natural*
order of CCT nodes is never available.
Am I expecting the wrong thing from profiler? Or how is "Call Sequence
Tracing" possible with profiler (regarding Eclipse TPTP seems to
promise that) ?
Any idea appreciated, thanks in advance!
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Compl
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Tomas Hurka
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| Posted: Mon Oct 06, 2008 7:57 am Post subject: Call Sequence Tracing with profiler |
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Hi Compl,
On 5 Oct 2008, at 05:19, Compl Yue Compl wrote:
| Quote: | I've spent a day or so investigating the possibility to trace Java
method invocation sequences (to understand behaviors of an existing
application upon some user actions) .
Docs show Eclipse TPTP has some ability to generate Sequence Diagram
in UML as profiling, but I've never succeeded with TPTP even to
start profiling.
The closest result I achieved so far is to view a CPU snapshot in NB
profiler by sorting with the "Call Tree" column, however that won't
show the exact order of method invocations in time sequence.
I'd downloaded a source zip of whole NB and digged a little into
profiler, my first idea had been to add a "Time Occurred" or
"Sequence No." column to have the CCT sortable by occurrence
sequence, but found no data field to back it. And I see the CCT
nodes are *physically* reordered on sorting, and there's a default
sort, so the *natural* order of CCT nodes is never available.
Am I expecting the wrong thing from profiler? Or how is "Call
Sequence Tracing" possible with profiler (regarding Eclipse TPTP
seems to promise that) ?
|
I think that "Call Sequence Tracing" is a little bit out of scope for
profiler. This is more suited for debugging. On the other hand
profiler has all the necessary information for "Call Sequence
Tracing", but those information are flatten into CPU snapshot, where
there is only summary information. For "Call Sequence Tracing" you
would have to remember every single method call, it will also create
problem when you want to display such information one method can call
other million times - this will create huge call tree, which will be
hard to navigate. To implement it, you would need to write new
shapshot infrastructure. It will be similar to CPU snapshot, but
instead of summary time information, it will hold just the information
about called methods.
Bye,
--
Tomas Hurka <mailto:address-removed>
NetBeans Profiler http://profiler.netbeans.org
VisualVM http://visualvm.dev.java.net
Software Engineer, Developer Platforms Group
Sun Microsystems, Praha Czech Republic
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Jaroslav Bachorik
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| Posted: Tue Oct 07, 2008 8:08 pm Post subject: Call Sequence Tracing with profiler |
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Hi Compl,
you might want to consider BTrace (http://btrace.dev.java.net) for this
task. You can write you tracing code in the form of pure (annotated)
java - you can instrument method calls identified by regex or
inheritence and the call sequence tracing is quite easily achievable.
There is even a VisualVM plugin for BTrace.
In case you need help with BTrace feel free to write to the BTrace user
list.
Regards
JB
Compl Yue Compl wrote:
| Quote: | Hi list,
I've spent a day or so investigating the possibility to trace Java
method invocation sequences (to understand behaviors of an existing
application upon some user actions) .
Docs show Eclipse TPTP has some ability to generate Sequence Diagram in
UML as profiling, but I've never succeeded with TPTP even to start
profiling.
The closest result I achieved so far is to view a CPU snapshot in NB
profiler by sorting with the "Call Tree" column, however that won't show
the exact order of method invocations in time sequence.
I'd downloaded a source zip of whole NB and digged a little into
profiler, my first idea had been to add a "Time Occurred" or "Sequence
No." column to have the CCT sortable by occurrence sequence, but found
no data field to back it. And I see the CCT nodes are *physically*
reordered on sorting, and there's a default sort, so the *natural* order
of CCT nodes is never available.
Am I expecting the wrong thing from profiler? Or how is "Call Sequence
Tracing" possible with profiler (regarding Eclipse TPTP seems to promise
that) ?
Any idea appreciated, thanks in advance!
-
Compl
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Joined: 02 Aug 2011
Posts: 5
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