Timing an Action

Thread view:

Hal Vaughan - 06 Aug 2007 20:03 GMT

I have a program that communicates with another program on the same
computer. Sometimes the other program freezes. When that happens, I can
call that program and nothing happens and I don't get any signal that
things are frozen.

I was thinking of using another thread and timing the action. I could set a
time, like 10 seconds and if the main thread hasn't reported in, then I
could kill and restart the other program and re-initialize things on my
end.

I know I could use a thread and just have it sleep for the time I want to
wait, but is there a better way to do this? I know there are tons of
things in the API I've never heard of. Is there anything for checking when
a thread has been on the same instruction for too long or to check and find
out if a thread is waiting for another program to get back to it or
anything like that?

Any ideas or functions or classes that might help with this are appreciated!

Thanks!

Hal

Reply to this Message

Roedy Green - 06 Aug 2007 22:53 GMT

>I was thinking of using another thread and timing the action. I could set a
>time, like 10 seconds and if the main thread hasn't reported in, then I
>could kill and restart the other program and re-initialize things on my
>end.

see http://mindprod.com/jgloss/timer.html

Signature

Roedy Green Canadian Mind Products
The Java Glossary
http://mindprod.com

Reply to this Message

Hal Vaughan - 07 Aug 2007 09:07 GMT

>>I was thinking of using another thread and timing the action. I could set
>>a time, like 10 seconds and if the main thread hasn't reported in, then I
>>could kill and restart the other program and re-initialize things on my
>>end.
> see http://mindprod.com/jgloss/timer.html

My mistake was searching your glossary with "time" and "timing" instead of
timer, which, when you think about it, was short sighted on my part.

Thanks!

Hal

Reply to this Message

Roedy Green - 07 Aug 2007 21:00 GMT

On Tue, 07 Aug 2007 04:07:43 -0400, Hal Vaughan
<hal@thresholddigital.com> wrote, quoted or indirectly quoted someone
who said :

>My mistake was searching your glossary with "time" and "timing" instead of
>timer, which, when you think about it, was short sighted on my part.

If you look at the bottom of the page
http://mindprod.com/jgloss/time.html, you will have seen a link to
Timer. Often if the page does not contain what you want, the links
section will take you there.

Signature

Roedy Green Canadian Mind Products
The Java Glossary
http://mindprod.com

Reply to this Message

tzvika.barenholz@gmail.com - 07 Aug 2007 07:22 GMT

> I have a program that communicates with another program on the same
> computer. Sometimes the other program freezes. When that happens, I can
[quoted text clipped - 18 lines]
>
> Hal

use a Scheduled Execution Service (http://java.sun.com/j2se/1.5.0/docs/
api/java/util/concurrent/ScheduledExecutorService.html) to schedule
your killer thread after your desired delay.

another option is to schedule the job at hand (i.e. that which
sometimes gets stuck) with a specified timeout, and let the threads
required for the job run on their own:
ExecutorService.awaitTermination() - but it blocks.

T

Reply to this Message

Hal Vaughan - 07 Aug 2007 09:05 GMT

>> I have a program that communicates with another program on the same
>> computer. Sometimes the other program freezes. When that happens, I can
[quoted text clipped - 30 lines]
>
> T

On this project I'm trying to stick with Java 2 (I'm working with some
people that tend to be VERY slow in updating their computers!). I will
file that, though because it will come in handy when I can work with later
versions.

Thanks!

Hal

Reply to this Message

Timing an Action

Free Magazines