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Can a profile a separate program that invokes Java using JNI? [message #73428]

Tue, 06 June 2006 20:27

Jim Adams

Messages: 160
Registered: July 2009

Senior Member

I have an application written in C that I need to profile. Can TPTP do
this? Also can the profiler find JNI references that are being held?

Jim Adams

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Re: Can a profile a separate program that invokes Java using JNI? [message #73444 is a reply to message #73428]

Wed, 07 June 2006 14:45

Eclipse User

Originally posted by: nmehrega.ca.ibm.com

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No, TPTP only provides a Java Profiler. You might want to check out the
Hitchhiker project, which is a C/C++ profiler based on TPTP:
http://www.ocsystems.com/eclipse/index.html

Navid Mehregani
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 No, TPTP only provides a Java Profiler.
 You might want to check out the Hitchhiker project, which is a C/C++
profiler based on TPTP: http://www.ocsystems.com/eclipse/index.html
 
 Navid Mehregani
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Re: Can a profile a separate program that invokes Java using JNI? [message #73462 is a reply to message #73444]

Wed, 07 June 2006 17:28

Jim Adams

Messages: 160
Registered: July 2009

Senior Member

Navid_Mehregani wrote:
>
> No, TPTP only provides a Java Profiler. You might want to check out the
> Hitchhiker project, which is a C/C++ profiler based on TPTP:
> http://www.ocsystems.com/eclipse/index.html
>
> Navid Mehregani

Except that I want to profile the Java portion of the app. The C app
starts the VM using JNI and uses the full span of JNI to communicate
with the java objects.

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Re: Can a profile a separate program that invokes Java using JNI? [message #73480 is a reply to message #73462]

Wed, 07 June 2006 17:56

Eclipse User

Originally posted by: nmehrega.ca.ibm.com

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hmm, theoretically you should be able to profile any Java application as
long as you pass it either the -XrunpiAgent:server=enabled or
-XrunpiAgent:server=controlled VM argument. This spins off a profiling
agent, which you can later attach to in the workbench. See
http://www.eclipse.org/tptp/home/downloads/installguide/Agen tController41.html
for more details.

Navid Mehregani
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 hmm, theoretically you should be able
to profile any Java application as long as you pass it either the -XrunpiAgent:server=enabled
or -XrunpiAgent:server=controlled VM argument.  This spins off a profiling
agent, which you can later attach to in the workbench.  See http://www.eclipse.org/tptp/home/downloads/installguide/Agen tController41.html
for more details.
 
 Navid Mehregani
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Re: Can a profile a separate program that invokes Java using JNI? [message #73531 is a reply to message #73480]

Thu, 08 June 2006 13:02

Joe Toomey

Messages: 79
Registered: July 2009

Member

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There isn't much discussion of using TPTP to profile a JVM that was
created by the JNI Invocation API, as opposed to laucnhed from the command
line, but as long as you pass the appropriate JVM arg (as Navid described)
when creating the JVM (in the array of JavaVMOption structs passed in the
JavaVMInitArgs), I expect this will work.

--Joe
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 There isn't much discussion of using
TPTP to profile a JVM that was created by the JNI Invocation API, as opposed
to laucnhed from the command line, but as long as you pass the appropriate
JVM arg (as Navid described) when creating the JVM (in the array of JavaVMOption
structs passed in the JavaVMInitArgs), I expect this will work.
 
 --Joe
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