the scenario is like this:
i use Runtime.getRuntime().exec() to execute another sub-process.
When i press ctrl+c to terminate the program, the subprocess exit also
however if i use "kill -2" unix command to terminate the program, its subprocess do no exit with the program, i suppose the JVM reacts the same to a "kill -2" and a ctrl+c ?
anyone could explain to me, thanks
well I am not 100% sure of my response but here are some thinkings that could help finding the solution.
1) you should think of replacing "kill -2" by a more generic version like kill -INT or kill -KILL
2) the CTRL+C shortcut is configurable. so your administrator or even you can decide what signal must be send by perssing CTRL+C
3) in my opinion CTRL+C is equivalent to "kill -KILL" (but here I am not 100%sure) and "kill -2" is equivalent to "kill -INT". so in my opinion you are not sending the same signal to the process, so i am not surprised your are not having the same behavior.
Hope I helped
Marc
> More to the point, you could try not killing anything
> and providing proper means to shut your application
> down.
yes, but seriously i need to do some cleanup if the program halts all of a sudden, so i need a sigterm, sigint, sigkill to test my program. I have added a shutdownhook to the main class, it can detect a sigint and sigkill, but the JVM helps me to automatically close all the subprocesses if i press ctrl+c but not when i use "kill -2" command, that is why i am asking.
I also want to know what the JVM have done behind the screen when i press a ctrl+c
many thanks
