| JNI applications debugging [message #199135] |
Mon, 06 August 2007 15:14 |
Eclipse User |
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Originally posted by: mariot.chauvin.gmail.com
Hi,
I am a student who takes part this year to the google summer of code
(http://code.google.com/soc/2007/) for the Eclipse project. The purpose of
my project is to provide seamless debugging between JDT and CDT. Since
April I am working to improve the "user experience" for developers who
work on java projects using JNI and native code.
Since few days ago, a first version in available to download (0.0.1).
Concretely this version adds an entry in the Debug dialog, which allow you
to launch a JNI debug session. After creating a new configuration with the
correct settings, if you launch it, the JVM will be launched and gdb
attached to its pid and the two targets will be displayed.
Then you can follow the call of native functions into native code. For
instance, regarding this Java line :
new JNITest().native_doubleInt(42);
If you choose to step into, then you will go into native code :
JNIEXPORT jint JNICALL Java_JNITest_native_1doubleInt (JNIEnv *pEnv,
jobject obj, jint value) {
If you choose to step over, or step return, you will simply go on the next
Java code line.
The same behavior is available to follow java call from native code. For
instance regarding this C line :
(*pEnv)->CallVoidMethod(pEnv,obj,mid);
If you choose to step into, then you will go into the java method.
Otherwise if you choose to step over, or step return, you will simply go
on the next native code line.
More technical infos can be found on my blog :
http://eclipse-soc-mariot.blogspot.com
Some documentation is available on the following wiki page :
http://wiki.eclipse.org/index.php/Support_seamless_debugging
_between_JDT_and_CDT
To install it an update site is available :
http://eclipse-incub.svn.sourceforge.net/viewvc/*checkout*/e clipse-incub/jni_seamless_debugging/update-site/site.xml
I think that CDT user are intersted by this kind of functionality, so I
will appreciate any feedback/comments that will help me to improve this
plug-in.
As it is the first version, you will surely find a lot of bugs/problems,
please report them on the eclipse bugzilla. There is a "
org.eclipse.soc.jni" component in SOC which is in Technology category
(please add me in CC).
Regards,
Mariot
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