As several members have pointed out J is single threaded (in particular the
J GUI and Engine run in the same single thread). The suggestions of
semaphore and mapped files are perhaps more complicated than what you
required.
At the start of you run delete a known file (e.g., ~temp\interrup_run). And
then test for the existance of that file at appropriate points in the
running application (e.g., at the top of the main loop). If the file exists
you can then do whatever you want within the application (e.g., use wd'mb
....' to put up a message asking what the user wants to do).
----- Original Message -----
From: "David Porter" <[EMAIL PROTECTED]>
To: "J programming list" <[email protected]>
Sent: Tuesday, January 15, 2008 8:52 AM
Subject: [Jprogramming] Soft-stopping of a long loop
I have a loop that processes around a hundred files. Once started, it must
continue or, you must stop it using one of several ugly methods from the
operating system.
I put in the break. control word that looks at a variable to enable a way
to break out of the loop. I thought setting that variable with a button
on the form would be a good idea, but all I get when I try this while the
loop is running is the Windows "boink" . Is there a good, or any, way to
set this variable while the loop is running?
Dave Porter
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