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-- C97120A.ADA

--                             Grant of Unlimited Rights

--

--     Under contracts F33600-87-D-0337, F33600-84-D-0280, MDA903-79-C-0687,

--     F08630-91-C-0015, and DCA100-97-D-0025, the U.S. Government obtained 

--     unlimited rights in the software and documentation contained herein.

--     Unlimited rights are defined in DFAR 252.227-7013(a)(19).  By making 

--     this public release, the Government intends to confer upon all 

--     recipients unlimited rights  equal to those held by the Government.  

--     These rights include rights to use, duplicate, release or disclose the 

--     released technical data and computer software in whole or in part, in 

--     any manner and for any purpose whatsoever, and to have or permit others 

--     to do so.

--

--                                    DISCLAIMER

--

--     ALL MATERIALS OR INFORMATION HEREIN RELEASED, MADE AVAILABLE OR

--     DISCLOSED ARE AS IS.  THE GOVERNMENT MAKES NO EXPRESS OR IMPLIED 

--     WARRANTY AS TO ANY MATTER WHATSOEVER, INCLUDING THE CONDITIONS OF THE

--     SOFTWARE, DOCUMENTATION OR OTHER INFORMATION RELEASED, MADE AVAILABLE 

--     OR DISCLOSED, OR THE OWNERSHIP, MERCHANTABILITY, OR FITNESS FOR A

--     PARTICULAR PURPOSE OF SAID MATERIAL.

--*

-- CHECK THAT A SELECTIVE WAIT DELAYS AT LEAST AS LONG AS IS SPECIFIED

-- IN A DELAY ALTERNATIVE.

-- WRG 7/11/86

with Impdef;

WITH REPORT;   USE REPORT;

WITH CALENDAR; USE CALENDAR;

PROCEDURE C97120A IS

BEGIN

     TEST ("C97120A", "CHECK THAT A SELECTIVE WAIT DELAYS AT LEAST " &

                      "AS LONG AS IS SPECIFIED IN A DELAY ALTERNATIVE");

     DECLARE

          TASK T IS

               ENTRY NO_GO;

               ENTRY SYNCH;

          END T;

          TASK BODY T IS

               BEFORE, AFTER : TIME;

          BEGIN

               -- ENSURE THAT SYNCH HAS BEEN CALLED BEFORE PROCEEDING:

               WHILE SYNCH'COUNT = 0 LOOP

                    DELAY 1.0 * Impdef.One_Second;

               END LOOP;

               BEFORE := CLOCK;

               SELECT

                    ACCEPT NO_GO;

                    FAILED ("ACCEPTED NONEXISTENT ENTRY CALL");

               OR

                    DELAY 10.0 * Impdef.One_Second;

                    AFTER := CLOCK;

                    IF AFTER - BEFORE < 10.0 * Impdef.One_Second THEN

                         FAILED ("INSUFFICIENT DELAY");

                    END IF;

               END SELECT;

               ACCEPT SYNCH;

          EXCEPTION

               WHEN OTHERS =>

                    FAILED ("EXCEPTION RAISED");

          END T;

     BEGIN

          T.SYNCH;  -- SUSPEND MAIN TASK BEFORE READING CLOCK.

     END;

     RESULT;

END C97120A;