Tasking Error Causing SIGILL

Tasking Error Causing SIGILL

[Dennis Miller]

I have a task type that acts as a semaphore for a buffer list.  The
entry points for the task are Start, Seize, Release, and Stop.  The task
body looks something like this:

   task body Semaphore
      Boolean busy; 
      Boolean complete;
   begin
      accept Start
         select
            when not Busy =>
               accept Seize do
                 busy = true;

         or accept Release
            busy = false; 

         or when not Busy =>
               accept Stop do
                 complete = true;
         end select;

     -- CAN'T REMEMBER THE LINE OF CODE THAT GOES HERE
      
   end Semaphore;
         


My code is compiled on Solaris 7 using the VADS 6.2.3c compiler and AXI
Bindings from ATC (version 3.2).

My problem is I get a SIGILL error when I try to clear the buffer. 
Could this problem be caused because a task called Seize, Release, or
Stop before Start has been called?  When I checked the tasks running, I
have two suspended at select and two more suspended at fast select
(sorry...I'm at home and I was writing this at work).

--Dennis-

Re: Tasking Error Causing SIGILL

[Jerry van Dijk]

In article <37D1D790.EDD57617@home.com> @home.com writes:

>I have a task type that acts as a semaphore for a buffer list.  The
>entry points for the task are Start, Seize, Release, and Stop.  The task
>body looks something like this:

<snip>

>My code is compiled on Solaris 7 using the VADS 6.2.3c compiler and AXI
>Bindings from ATC (version 3.2).

If VADS 6.2.3c is an Ada compiler (instead of Ada83), why not use a
protected type ? For more efficient.

--
--  Jerry van Dijk  | email: jdijk@acm.org
--  Team-Ada        | www:   stad.dsl.nl/~jvandyk
--  Paris, France   | Leiden, Holland

Re: Tasking Error Causing SIGILL

[Ted Dennison]

In article <936545307.1snx@jvdsys.stuyts.nl>,
  jerry@jvdsys.stuyts.nl wrote:

> If VADS 6.2.3c is an Ada compiler (instead of Ada83), why not use a

Its not. VADS is Ada83 only.

--
T.E.D.


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