RE: Protected Type Question.

["Beard, Frank" <beardf@spawar.navy.mil>]

The task (3) combination was more common, but I also had other
task combinations hang.  I don't think the program is crashing.
Each of the tasks have "when others" exception handlers that log,
and nothing is showing up.

Pragma Atomic and Volatile were a shot in the dark.  I didn't 
really think it would make a difference.

We're running on NT 4.0 with Service Pack 5.

If you think of anything else, let me know.
Thanks.

Frank

-----Original Message-----
From: tmoran@acm.org [mailto:tmoran@acm.org]
Sent: Monday, December 11, 2000 10:40 PM
To: comp.lang.ada@ada.eu.org
Subject: Re: Protected Type Question.


That semaphore code should work, and certainly shouldn't hang.  Is there
any possible significance to the fact both your examples show task (3)
as the one that does a RELEASE but never gets to RELEASED?  Are you
sure the program is hanging, and not crashing and somehow hanging
during the attempted crash?
  Pragmas Atomic and Volatile should certainly not be necessary.  The
whole point is that only one task at a time can execute the entries
or procedures in, and thus access or change the value of data
(Busy, in this case) of, a protected object.
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