Review request for 4917309 and 6864003 (original) (raw)

David Holmes - Sun Microsystems David.Holmes at Sun.COM
Fri Jul 24 03:17:05 UTC 2009

Hi Mandy,

661 JVM_ENTRY(jclass, JVM_FindClassFromBootLoader(JNIEnv* env, 662 const char* name, 663 jboolean throwError))

Can't we now drop the throwError parameter altogether?

Pity we can't make a similar fix to the extensions loader ...

Cheers, David

Mandy Chung said the following on 07/24/09 09:53:

This review request is for both the HotSpot runtime and the core libs teams.

Fixed 4917309: (cl) Reduce internal usage of ClassNotFoundExceptions during class-loading Fixed 6864003: Modify JVMFindClassFromBootLoader to return null if class not found Summary: o Fix java.lang.ClassLoader to use the new VM entry point JVMFindClassFromBootLoader for load a system class from the bootstrap classloader that will reduce the number of ClassNotFoundException objects thrown by the application class loader by 50%. The remaining half of the ClassNotFoundException objects are thrown by the extension class loader which is the parent of the application class loader. o ClassLoader.loadClass and ClassLoader.findSystemClass will throw ClassNotFoundException as they are specified. o JVMFindClassFromBootLoader is currently not used (going to used by the java launcher see 6864028). There is no issue of changing it to return null instead of throwing CNFE. Webrev: http://cr.openjdk.java.net/~mchung/4917309/hotspot-webrev/ http://cr.openjdk.java.net/~mchung/4917309/jdk-webrev/

Thanks Mandy

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