Hi, I am having lot of CPU and IO intensive code in shutdown hook. Some times I see they are not getting executed properly. So Is there any limitation like we should not have lot of code in shutdown hook.
Thanks D. L. Kumar
+1
A:
Shutdown hooks are not guaranteed to run. Process abortion by killing the process or hardware failures are typical cases when shutdown hooks are not run.
David Schmitt
2009-01-06 10:15:24
Thanks for ur reply. I am dumping two files. Some times they get dumped properly, Some times not. Here there are no hardware failures or killing processes. It is just happening randomly.
2009-01-06 10:24:40
+2
A:
I have placed some fairly substantial code in a shutdown hook for one of my apps, and it executes very reliably on a variety of O/S's (Windows XP, Vista, AS400/iSeries/Systemi, Linux) under a variety of circumstances, including sigterms and Windows shutdown.
But beware of any system's shutdown timeout (ala Windows good ol' this program is not responding dialog).
Also beware true O/S kill commands, like Linux sigkill (?) and Windows task manager's end process.
Software Monkey
2009-01-06 10:16:04
+2
A:
Simply No. Read carefully API and you will see. There is limited time to shutdown. If you extend over this time slot the JVM will simply end/terminate without notification. If you are writing data, you will write down corrupted data.
Rastislav Komara
2009-01-06 10:41:58