Hello, DRLVM has an (undocumented?) option to switch off verifier -Dvm.use_verifier=false . With this option activemq starts without crash. Verifier seem to be the blocker.
On 8/8/06, Geir Magnusson Jr <[EMAIL PROTECTED]> wrote:
Gregory Shimansky wrote: > On Tuesday 08 August 2006 00:01 Geir Magnusson Jr wrote: >> Ok - I made that fix and still seem to have a problem, even after a >> clean rebuild. I guess I should figure out how to turn on the trace... > > The problem is that class loader does not chain VerifyError to > NoClassDefFoundError so debugging such problems is diffucult without tracing. > I think this is a place for improvement in drlvm. > > I tried to fix the problem and found out that verifier just doesn't understand > exception handlers which point to the code length address (code end + 1). It > is a surprise that this problem didn't appear earlier. App-oriented testing... :) > > My patch attached to JIRA attempts to fix the problem in verifier only, the > application still fails to start. In default mode it exits silently, I didn't > find any exception logs or something. When using interpreter -Xint it fails > with ArrayStoreException still without any stack trace. I'll try to find out > what is happening. Nice work. Thanks for doing this... geir > >> Anton Luht wrote: >>> Hello, >>> >>> The problem is with verifier. >>> >>> The code in Verifier.cpp: >>> >>> if( ( start_pc >= len ) || ( end_pc >= len ) || ( handler_pc >= >>> len ) ) >>> ... >>> >>> result = VER_ErrorHandler; >>> >>> I've modified error logging a bit to log values of start_pc, end_pc, >>> handler_pc and len and that's the output: >>> >>> >>> Loading message broker from: xbean:activemq.xml >>> vf_debug: VerifyError: (class: >>> edu/emory/mathcs/backport/java/util/concurrent/lo >>> cks/ReentrantLock$NonfairSync, method: lockInterruptibly()V, len: 103, >>> start_pc: >>> 87, end_pc: 103, handler_pc: 21) Handler pc is out of range >>> vf_debug: verifying class >>> edu/emory/mathcs/backport/java/util/concurrent/locks/R >>> eentrantLock (method <init>()V) couldn't load class >>> "edu/emory/mathcs/backport/j >>> ava/util/concurrent/locks/ReentrantLock$NonfairSync" >>> vf_debug: VerifyError: >>> edu/emory/mathcs/backport/java/util/concurrent/locks/Reen >>> trantLock$NonfairSync >>> Failed to execute main task. Reason: java.lang.NoClassDefFoundError: >>> edu/emory/m >>> athcs/backport/java/util/concurrent/locks/ReentrantLock$NonfairSync >>> >>> I'm not an expert in verification but seems like >>> >>> end_pc >= len >>> should be replaced with >>> end_pc > len >>> >>> On 8/5/06, Geir Magnusson Jr <[EMAIL PROTECTED]> wrote: >>>> Anyone interested? :) > --------------------------------------------------------------------- Terms of use : http://incubator.apache.org/harmony/mailing.html To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
-- Regards, Anton Luht, Intel Middleware Products Division --------------------------------------------------------------------- Terms of use : http://incubator.apache.org/harmony/mailing.html To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
