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Re: native jdk release schedule question
Nick Johnson wrote:
FWIW, it looks like the trouble comes from
hotspot/src/share/vm/prims/jvmdi.cpp because monitor->monitor().raw_notify
(or raw_wait or raw_notifyAll or raw_exit) is returning
ObjectMonitor::OM_ILLEGAL_MONITOR_STATE.
That seems to be triggered from
hotspot/src/os/bsd/vm/objectMonitor_bsd.cpp like this:
int ObjectMonitor::raw_notify(TRAPS) {
if (THREAD != _owner) {
return OM_ILLEGAL_MONITOR_STATE;
}
So at first glance it looks like a thread ownership problem. Don't have
time to dig any deeper ATM.
The funny thing is that the behavior is not consistent:
edgar% cat dummy.java
class dummy { public static void main(String[] args) {} }
edgar% javac dummy.java
edgar% java dummy
edgar% jdb dummy
Initializing jdb ...
> run
run dummy
java.io.IOException: Target failed to handshake.
at
com.sun.tools.jdi.VirtualMachineManagerImpl.handshake(VirtualMachineManagerImpl.java:190)
at
com.sun.tools.jdi.VirtualMachineManagerImpl.createVirtualMachine(VirtualMachineManagerImpl.java:201)
at
com.sun.tools.jdi.AbstractLauncher.launch(AbstractLauncher.java:107)
at
com.sun.tools.jdi.SunCommandLineLauncher.launch(SunCommandLineLauncher.java:144)
at
com.sun.tools.example.debug.tty.VMConnection.launchTarget(VMConnection.java:333)
at
com.sun.tools.example.debug.tty.VMConnection.open(VMConnection.java:166)
at
com.sun.tools.example.debug.tty.Commands.commandRun(Commands.java:547)
at com.sun.tools.example.debug.tty.TTY.executeCommand(TTY.java:299)
at com.sun.tools.example.debug.tty.TTY.<init>(TTY.java:539)
at com.sun.tools.example.debug.tty.TTY.main(TTY.java:850)
Fatal error:
Unable to launch target VM.
I was usually getting the previous error that I mentioned, but the last
6-7 runs consistently give me this output. It could be some sort of heap
corruption or something like that. The machine is a July 10 -CURRENT.
Rebuilding the jdk with WITH_DEBUG is going to take the rest of the day
on my system, but since I am leaving on vacation in a few hours, it will
have to wait :-)
Cheers,
--
Panagiotis Astithas, PhD
R&D Manager
EBS, Electronic Business Systems Ltd.
18 Evgenidou Street, 115 25, Athens GREECE
Phone: +30 210 674 7631
Fax: +30 210 674 7601
http://www.ebs.gr
