On 06/06/2012 09:09 PM, Doug Lea wrote:
On 06/06/12 15:03, Rémi Forax wrote:
tryMonitorEnter is the equivalent of tryLock for synchronized block
(monitorEnter/monitorExit).
Sorry; yes. This method exists, but seems to be designed to only be used
in unusual situations. So the performance is dreadful on JVMs I've
tried it on. Working on this method to try to make it perform well
enough to use in performance-sensitive code might make a good
project for someone.
-Doug
I've just checked Hotspot sources, monitorEnter/MonitorExit and
tryMonitorEnter
have no corresponding intrinsic.
That's why you can't use them in ConcurrentHashMap.
Rémi
