Yes I am indeed running it from a multithreaded Java program. What is the latest version of Jess? What kind of issues may arise if I assert a fact from a different thread from the main thread in which the Jess engine is running? Is that where the problem arises?
Thanks, David -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] Sent: Tuesday, April 06, 2004 3:47 PM To: [EMAIL PROTECTED] Subject: Re: JESS: Jess hanging on 'modify' I think David Ash wrote: > I'm having trouble in that Jess seems to sometimes (frequently > enough to make it hard to use) hang when I do a 'modify' of a fact. > There is no error message or anything-it just hangs. Any ideas what > might be causing this? If you're doing this from a multithreaded Java program, it may be a deadlock issue. If so, make sure you're running the latest version of Jess, as there have been patches to prevent deadlocks in the past. A "Control-Break" on Windows or "Control-\" on UNIX will give you a stack dump that would be helpful in diagnosing the problem. --------------------------------------------------------- Ernest Friedman-Hill Science and Engineering PSEs Phone: (925) 294-2154 Sandia National Labs FAX: (925) 294-2234 PO Box 969, MS 9012 [EMAIL PROTECTED] Livermore, CA 94550 http://herzberg.ca.sandia.gov -------------------------------------------------------------------- To unsubscribe, send the words 'unsubscribe jess-users [EMAIL PROTECTED]' in the BODY of a message to [EMAIL PROTECTED], NOT to the list (use your own address!) List problems? Notify [EMAIL PROTECTED] -------------------------------------------------------------------- -------------------------------------------------------------------- To unsubscribe, send the words 'unsubscribe jess-users [EMAIL PROTECTED]' in the BODY of a message to [EMAIL PROTECTED], NOT to the list (use your own address!) List problems? Notify [EMAIL PROTECTED] --------------------------------------------------------------------
