Path: utzoo!utgpu!watserv1!ria!csd.uwo.ca!terry
From: terry@csd.uwo.ca (Terry Cudney)
Newsgroups: comp.sys.amiga.programmer
Subject: Can you use Signal() from an input handler?
Message-ID: <2032@ria.ccs.uwo.ca>
Date: 11 Jan 91 22:57:14 GMT
Sender: news@ria.ccs.uwo.ca
Followup-To: comp.sys.amiga.programmer
Organization: Amistosa MicroWare
Lines: 29

Hi,
     I have an input handler which follows the example in the RKM companion
disks (devices/input/inputswap.c & inputhandler.a). We can fiddle with
the input events here, no problem.

     I want to send a signal from the handler to the main program using
Signal(), so that the main program can do some DOS stuff.
     - The Task pointer (pointing to the main program) and a
       pre-AllocSignal()-ed signal bitnumber are passed to the handler
       in it's data area. (The data area isn't used otherwise, in this handler.)

     So far so good. Using kprintf's to a serial terminal I know things
are getting passed OK. But el GURU visits as soon as the Signal() function
is called in the handler.

     Question:
     Can the Signal() function not be called from an input handler
to signal another process? If not, what other mechanism (without busy-waiting)
could tell the other process that a particular input event
(RAMIGA + ALPHABETIC KEY)? has occurred?

     Any help will be greatly appreciated.


-- 
--terry
/* terry@chaplin.csd.uwo.ca
 * Terry Cudney Amistosa MicroWare 9 Durham Street, LONDON, Ontario, N5Y 2H9
 */