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From: brianr@tekig4.UUCP
Newsgroups: comp.sys.amiga
Subject: Task spawning difficulties
Message-ID: <1559@tekig4.TEK.COM>
Date: Tue, 9-Jun-87 18:04:59 EDT
Article-I.D.: tekig4.1559
Posted: Tue Jun  9 18:04:59 1987
Date-Received: Sat, 13-Jun-87 02:03:40 EDT
Organization: Tektronix Inc., Beaverton, Or.
Lines: 58
Keywords: CreateTask AddTask crash

I am slowly working on a real live application for my Amiga, using
Manx' Aztec C compiler (ver 3.40), and I'm having problems creating
an independent task: during the call to the "AddTask" library function,
the Amiga crashes (I can single-step the debugger 20 or 30 instructions
into "AddTask").

I have produced a small test program, included below, which demonstrates
this behavior.  I posted it to Manx' BBS, but so far, nobody there has
suggested a remedy.  Can anyone point out my mistake?


I apologize for posting such a non-contributory article, but I used up
my Manx patience waiting for ver3.4.


---- program follows ---

#include <functions.h>
#include <exec/tasks.h>

struct Task *myslave;
USHORT total;

#define KILLSIG 30L
#define KILLFLAG 0x40000000L

static void Countemup()
{
 int i;
 geta4();
 total = 300;
 if (AllocSignal (KILLSIG) != KILLSIG) goto dumpout;
 total = 0;
 Wait (KILLFLAG);
 for (i = 0; i < 20; i++) total += i;

dumpout:
 RemTask (0L);
}


main()
{
 if ((myslave = CreateTask("Force",22L,Countemup,1400L)) && total < 20)
 {
  printf ("We made a task.  It has set total to %d.\n",total);
  Signal (myslave, KILLFLAG);
  printf ("After running the task, total becomes %d.\n",total);
  }

 else printf ("The task didn't spawn.\n");
 }

------- end of program ---

Thanks in advance,

Brian Rhodefer   ...tektronix!tekig4!brianr