Unfortunately, however, this is inside of an application package, and the JProfiler GUI will not let you navigate into the package to get to the jar. Applications/Utilities/Java/Java Web Start.app/Contents/MacOS/javaws.jar However, the launcher app itself ( ) is not normally included in the default Java runtime classpath.
It is not necessary to include jars or classes for the application that you are profiling, as the WebStart launcher application will take care of downloading those for you. Note that if the URL does not contain spaces or other problematic characters you can get by without enclosing it in quotes.ħ) The final step is to populate the class path.
If the URL is valid, the open command will hand the URL off to your web browser, which will then pass it along to WebStart. You may want to validate the URL first from the command line, by entering the following in the OSX Terminal: For example, this could be something like: When you launch a Web Start application from a web page, this is the class that handles downloading the JNLP file, retrieving and caching any other jars that are needed, and then running the app.Ħ) Enter the URL for the WebStart application’s JNLP file in the “Arguments” field. is the class that implements the WebStart launcher. Note that this should not be the name of the class you actually want to profile. ="/Applications/Utilities/Java/Java Web Start.app/Contents/MacOS" -Djnlpx.splashport=-1 -Djnlpx.heapsize=NULL,NULL -Djnlpx.jvm=/System/Library/Frameworks/amework/Versions/1.4.2/ Home/bin/java -Djnlpx.remove=true ="file:/Applications/Utilities/Java/Java Web Start.app/Contents/MacOS/javaws.policy" -DtrustProxy=true ="/Applications/Utilities/Java/Java Web Start.app/Contents/MacOS" ="/Users/ your_user_id/Library/Caches/Java Web Start"ĥ) Enter the name of the WebStart launcher application class in the “Main class or executable JAR” field: Just watch out for line-breaks - there shouldn’t be any. JProfiler only gives you a single line in which to enter all of this, so it will probably be easiest if you make any changes in your favorite text editor, then paste the results into the “VM arguments” fields. If you are using a version of the Java runtime other than 1.4.2, make sure that the jnlpx.jvm property points to the correct java executable. Note that you will, at least, need to change your_user_id to the name of the account that you are logged in as. Java Web Start.app/Contents/MacOS/javaws.policy" Djnlpx.jvm=/System/Library/Frameworks/amework/Versions/1.4.2/ To set these, something like the following should be entered in the “VM arguments” field:
“Apple 1.4.2_05”.ģ) The concept of a working directory is typically not meaningful for WebStart applications, so you can leave this set to “”.Ĥ) The WebStart launcher application relies on a set of system properties that tell it about the local installation and specify other execution parameters. Here are the steps:ġ) Choose “New Session” from the “Session” menu, give the session a name, and choose “Local” for the “Session type”.Ģ) Choose the Java VM that your WebStart application should run under, e.g.
#Jprofiler for mac download
WebStart is just another Java application, so we can tell JProfiler to launch WebStart as a local application, with the appropriate command line arguments and jars in the classpath to make it download and run the app we actually want to profile.
Speculated rationale aside, a simple work-around is possible. The documentation suggests that this functionality is available on other platforms, so perhaps the omission is due to perceived uncertainties of Apple’s approach to enforcing a single (per-JDK version) installation of the Java runtime.
#Jprofiler for mac mac
(E.g., menus do not follow Mac conventions and buttons have mnemonics.) A more significant issue is that, at least as of version 4.2.1, there appears to be no way to configure a session for profiling a Web Start application. JProfiler works great under OSX, though purists could probably still find a number of - mostly minor - UI elements that are un-Mac-like. Once a system reaches a certain size, and particularly for systems that have to run for long periods of time, a tool like JProfiler can pay for itself in the space of a single squashed bug. EJ Technology’s JProfiler is an indispensable tool for tracking down memory leaks and performance bottlenecks.
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