harmony-commits mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Sian January (JIRA)" <j...@apache.org>
Subject [jira] Created: (HARMONY-2195) How to use aspects for tracing
Date Wed, 15 Nov 2006 11:07:37 GMT
How to use aspects for tracing

                 Key: HARMONY-2195
                 URL: http://issues.apache.org/jira/browse/HARMONY-2195
             Project: Harmony
          Issue Type: Improvement
          Components: Classlib
            Reporter: Sian January
            Priority: Trivial
         Attachments: buildxmlpatch.txt

I'm creating this JIRA to store information and related files for how to use AspectJ for tracing
in the class libraries.  Instructions below for adding tracing to the math module:

1. Download AspectJ from http://www.eclipse.org/aspectj/downloads.php

2. Copy aspectjrt.jar to /depends/jars/aspectj/

3. Copy aspectjtools.jar and aspectjrt.jar to ANT_HOME/lib and if using Eclipse add both of
these to your ant runtime configuration (Window > Preferences > Ant > Runtime >

4. Edit build file to use iajc* instead of javac and include aspect class files (or apply
the buildxmlpatch.txt to build.xml in the math module)

5. Write a tracing aspect (or copy the one attached to modules\math\src\main\java\org\apache\harmony\tracing)

6. Re-build the module

7. Make sure to add aspectjrt.jar to the runtime classpath of whatever program you are running.

* - iajc isn't incremental like javac in ant, it will always do a total rebuild.  Also if
you switch from using iajc back to javac you will need to do a clean before you do a rebuild.

Please also note that it's not possible to use this kind of tracing for any classes that are
depended on by the AspectJ runtime or there will be errors initializing the classes because
of circular dependencies.  However I think most modules apart from luni should be safe.  Also
it's important to not trace methods that are called (directly or indirectly) by your tracing
methods otherwise you will end up in an endless loop.  

This message is automatically generated by JIRA.
If you think it was sent incorrectly contact one of the administrators: http://issues.apache.org/jira/secure/Administrators.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira


View raw message