1

I have to run a jar file with different parameters like this:

#!/bin/bash
cd /Users/hawkarhama/Desktop/RUN 
echo $(java -jar IPM.jar 0 20 3 sign.txt)
echo $(java -jar IPM.jar 1 20 3 sign.txt)
echo $(java -jar IPM.jar 2 20 3 sign.txt)

If, say, the second one took more than five minutes, I want to stop it and continue to the next one. So the maximum time for each running jar is 5 minutes. If it takes less than that, that's fine; but if one runs longer than that, the script must continue to the next one.

  • (1) If you are asking specifically about a Java program that you can modify, one approach might be to build the time limit into the Java code. (2) Why do you say echo $(…) instead of just running the program with java -jar IPM.jar … sign.txt? – G-Man Says 'Reinstate Monica' Sep 3 '14 at 17:45
  • For the echo$you are right and I did that before that was just a copy of the code I putted here. As for the java code I don't know how to do that programmatically. I tried System.CurrentTimeMilles but it's not working. – Hk148 Sep 3 '14 at 17:49
1

This should work in bash 4 or later:

#!/bin/bash
cd /Users/hawkarhama/Desktop/RUN 
( cmdpid=$BASHPID; (sleep 300; kill $cmdpid ) & exec java -jar IPM.jar 0 20 3 sign.txt )
( cmdpid=$BASHPID; (sleep 300; kill $cmdpid ) & exec java -jar IPM.jar 1 20 3 sign.txt )
( cmdpid=$BASHPID; (sleep 300; kill $cmdpid ) & exec java -jar IPM.jar 2 20 3 sign.txt )

For previous versions:

#!/bin/bash
cd /Users/hawkarhama/Desktop/RUN 
bash -c '(sleep 300; kill $$) & exec java -jar IPM.jar 0 20 3 sign.txt'
bash -c '(sleep 300; kill $$) & exec java -jar IPM.jar 1 20 3 sign.txt'
bash -c '(sleep 300; kill $$) & exec java -jar IPM.jar 2 20 3 sign.txt'

After searching a bit for a pure java version, I found this:

ScheduledExecutorService executor = Executors.newScheduledThreadPool(2); 
final Future handler = executor.submit(new Callable(){ 
     DoStuffHere();
});
executor.schedule(new Runnable(){
     public void run(){
         handler.cancel();
     }      
}, 5*60*1000, TimeUnit.MILLISECONDS);
  • thanks for the answer.It still runs the process after the 5 minutes . kill: usage: kill [-s sigspec | -n signum | -sigspec] pid | jobspec ... or kill -l [sigspec]. It gives me this line after each process takes more than 5 minutes . and it still run it which is not what I want. – Hk148 Sep 3 '14 at 17:35
  • @Hk148: I got this to work, in a somewhat artificial test. (I got a kill: (1234) - No such process message for each invocation that finished before the time ran out.) Are you sure you're typing it correctly? (Try copying and pasting.) What operating system are you using? – G-Man Says 'Reinstate Monica' Sep 3 '14 at 18:07
  • This method has the dissadvantage of having the "kill process" and "no such process" output. I tried running it with a 2>&1 >/dev/null after the kill command, but it did not omit the output, so for clarity, I omitted that on the solution. I tested it on cygwin, not on a truly unix shell, but arguments for commands like kill should be the same as most linux boxes – NuTTyX Sep 3 '14 at 18:11
  • @G-Man I use Mac osx,but the problem is after the 5 minutes it won't start the next test, or the next line.after 5 minutes it just stops every thing. – Hk148 Sep 3 '14 at 18:53
  • @NuTTyX is there any other ways to do that in the java code? – Hk148 Sep 3 '14 at 18:58
1

If your system has the timeout command, you should be able to use it, as

timeout 300s java -jar IPM.jar 0 20 3 sign.txt
    ︙
  • man timeout or info coreutils 'timeout invocation' to have a full help. It is a part of GNU coreutils. – Hastur Sep 3 '14 at 21:08
  • @G-Man When I try this it says, timeout: command not found. I think this version can not find the timeout or I don't have it on my mac – Hk148 Sep 4 '14 at 9:57
  • @Hk148: Yeah, after NuTTyX figured out that your version of bash was too old to support his first answer, I was afraid that OS X would be missing this, too. – G-Man Says 'Reinstate Monica' Sep 4 '14 at 14:41

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