how to make a Runtime process to finish.?

[dharma lingam s]

hi all,

i am running make command inside the Runtime.exec() command. but its not fully completed how to achieve this.

Process p1=Runtime.getRuntime().exec("make -C /usr/mine/");
System.out.println("\n Make is finished");

how to acheive this one. After the full completely execution of 'make' only it have to print. But its printing and exiting earlier. Any idea.???

[Ganesh Gore]

dharma lingam s wrote:hi all,

i am running make command inside the Runtime.exec() command. but its not fully completed how to achieve this.

Process p1=Runtime.getRuntime().exec("make -C /usr/mine/");
System.out.println("\n Make is finished");

how to acheive this one. After the full completely execution of 'make' only it have to print. But its printing and exiting earlier. Any idea.???

Simply add the below line....
p1.destroy();

[Richard Tookey]

You probably have a deadlock due to either the stdout or stderr buffers filling. When this happens the process is suspended until more buffer space is available but since you are not draining either of them the process cannot proceed. This is all explained in the 4 sections of http://www.javaworld.com/jw-12-2000/jw-1229-traps.html. You should ALL of read this and implement ALL the recommendations or you will suffer more grief.

Edit : I'm mystified as to why the OP has not already read the 'traps' article since I posted a reference to it in one of his other threads. I can only assume that he thinks he knows better and that he is immune to the traps. There is no point in me responding any further until I see evidence of the implementation of the 'traps' recommendations.

[Richard Tookey]

Ganesh Gore wrote:

Simply add the below line....
p1.destroy();

I don't think this will solve the OP's problem since it will abort the process without it actually running to completion. The OP almost certainly has a deadlock as I explained in my previous post..

[dharma lingam s]

destroy is forcibly terminating that also not working fully. At least any way the runtime(exec) process to run or other process to wait for its completion. atleast some seconds.

[Richard Tookey]

dharma lingam s wrote:destroy is forcibly terminating that also not working fully. At least any way the runtime(exec) process to run or other process to wait for its completion. atleast some seconds.

Are you determined to ignore my advice ? Why do you bother asking questions here if you just ignore the responses?

Bye

[dharma lingam s]

Sorry, just i asked anyother way to achieve the exec("make") command. so only i did.

i getting exception. process hasn't completed. any way to sole this.

[Richard Tookey]

dharma lingam s wrote:Sorry, just i asked anyother way to achieve the exec("make") command. so only i did.

i getting exception. process hasn't completed. any way to sole this.

I have told you what to do! Read the sodding 'traps' article and implement the recommendation. That is the only way to do it.

[dharma lingam s]

thanks Richard Tookey.. its working.