How to solve concurrency problems in java

xeon123 · 08-10-2011, 07:54 AM

Hi,

I think that I'm facing problem with concurrency in my application. I suspect that I'm facing problems with deadlocking and conditional waits that remain locked forever.

I don't have a clue on how to detect and solve concurrency problems. Any one can advice me what to do?

Thanks,

ta0kira · 08-10-2011, 08:33 AM

Can you wrap the mutexes and conditionals in classes that output debugging information (e.g. "locked", "unlocked", etc.)? That might be a useful permanent solution for future debugging, as well. I'm not familiar with threads in Java, but in POSIX C you have access to a unique thread identifier within the thread, which can be output for tracking purposes.
Kevin Barry

paulsm4 · 08-10-2011, 05:01 PM

Hi -

You could do worse than getting an IDE like Eclipse (my recommendation) or Netbeans and simply break into the debugger at any one of the threads you're afraid might be deadlocked, and use the debugger to analyze - and resolve - the problem.

This likes a good link for thread debugging under Netbeans:

http://netbeans.org/kb/docs/java/deb...ithreaded.html

'Hope that helps .. PSM