I'm fairly sure that the increment/decrement operators are not atomic. Hm...here's a post on Jguru showing why:
http://www.jguru.com/forums/view.jsp?EID=384082 Additionally, I think the statement that you gave in your example would be non-atomic anyway- even if an increment was atomic, you're first performing the increment, then storing it in a second variable. That's a two-step process, regardless of atomicity in the increment. -----Original Message----- From: Hiram Chirino [mailto:[EMAIL PROTECTED]] Sent: Thursday, July 18, 2002 8:55 AM To: [EMAIL PROTECTED] Subject: [JBoss-dev] is x++ an atomic operation?? Quick question for you Java Language Gurus out there, I heard one that the post increment operator was an atomic operation. For example, if you have a multi-threaded application with: id=lastRequestId++; You would not need to put this in a synchronized block be cause the ++ would be atomic and thus you would not get 2 duplicate ids. I was wondering if this is true or not. Can anybody confirm this for me?? Regards, Hiram ------------------------------------------------------- This sf.net email is sponsored by:ThinkGeek Welcome to geek heaven. http://thinkgeek.com/sf _______________________________________________ Jboss-development mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/jboss-development ------------------------------------------------------- This sf.net email is sponsored by:ThinkGeek Welcome to geek heaven. http://thinkgeek.com/sf _______________________________________________ Jboss-development mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/jboss-development
