Maximum lock count exceeded

[Ted Yu ted_yu-/[e-mail] [seajug]]

Hi,
Has anyone encountered the error below ?
java.lang.Error: Maximum lock count exceeded at java.util.concurrent.locks.ReentrantReadWriteLock$Sync.fullTryAcquireShared(ReentrantReadWriteLock.java:531) at java.util.concurrent.locks.ReentrantReadWriteLock$Sync.tryAcquireShared(ReentrantReadWriteLock.java:491) at java.util.concurrent.locks.AbstractQueuedSynchronizer.tryAcquireSharedNanos(AbstractQueuedSynchronizer.java:1326) at java.util.concurrent.locks.ReentrantReadWriteLock$ReadLock.tryLock(ReentrantReadWriteLock.java:873)
I am going over the calls of tryLock() in our code base and add missing unlock() calls.

If you have suggestion on how to detect unreleased lock objects, that would help.

Thanks

[Nimret Sandhu [e-mail] [seajug]]

I'd recommend trying out http://chrononsystems.com/

profilers that display info on threads might provide some clues:
http://visualvm.java.net/threads.html
http://www.yourkit.com/
http://www.ej-technologies.com/products/jprofiler/overview.html

cheers,
-
Nimret Sandhu
http://www.nimret.org

Post by Ted Yu ted_yu-/***@public.gmane.org [seajug]
Hi,
Has anyone encountered the error below ?
java.lang.Error: Maximum lock count exceeded
at java.util.concurrent.locks.ReentrantReadWriteLock$Sync.fullTryAcquireShared(ReentrantReadWriteLock.java:531)
at java.util.concurrent.locks.ReentrantReadWriteLock$Sync.tryAcquireShared(ReentrantReadWriteLock.java:491)
at java.util.concurrent.locks.AbstractQueuedSynchronizer.tryAcquireSharedNanos(AbstractQueuedSynchronizer.java:1326)
at java.util.concurrent.locks.ReentrantReadWriteLock$ReadLock.tryLock(ReentrantReadWriteLock.java:873)
I am going over the calls of tryLock() in our code base and add missing unlock()
calls.
If you have suggestion on how to detect unreleased lock objects, that would help.
Thanks

[dev danke [e-mail] [seajug]]

Good resources! Thanks

Post by Nimret Sandhu nimret-rf+Eeaps6PzQT0dZR+***@public.gmane.org [seajug]
I'd recommend trying out http://chrononsystems.com/
http://visualvm.java.net/threads.html
http://www.yourkit.com/
http://www.ej-technologies.com/products/jprofiler/overview.html
cheers,
-
Nimret Sandhu
http://www.nimret.org

Post by Ted Yu ted_yu-/***@public.gmane.org [seajug]
Hi,
Has anyone encountered the error below ?
java.lang.Error: Maximum lock count exceeded
at java.util.concurrent.locks.ReentrantReadWriteLock$Sync.fullTryAcquireShared(ReentrantReadWriteLock.java:531)
at java.util.concurrent.locks.ReentrantReadWriteLock$Sync.tryAcquireShared(ReentrantReadWriteLock.java:491)
at java.util.concurrent.locks.AbstractQueuedSynchronizer.tryAcquireSharedNanos(AbstractQueuedSynchronizer.java:1326)
at java.util.concurrent.locks.ReentrantReadWriteLock$ReadLock.tryLock(ReentrantReadWriteLock.java:873)
I am going over the calls of tryLock() in our code base and add missing unlock()
calls.
If you have suggestion on how to detect unreleased lock objects, that would help.
Thanks