Subversion Repositories openrisc_2011-10-31

-- C97302A.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 WHENEVER AN INDEX IS PRESENT IN A TIMED_ENTRY_CALL, IT

-- IS EVALUATED BEFORE ANY PARAMETER ASSOCIATIONS ARE EVALUATED, AND 

-- PARAMETER ASSOCIATIONS ARE EVALUATED BEFORE THE DELAY EXPRESSION.

-- THEN A RENDEZVOUS IS ATTEMPTED.

-- RJW 3/31/86

with Impdef;

WITH REPORT; USE REPORT;

WITH CALENDAR; USE CALENDAR;

PROCEDURE C97302A IS

     INDEX_COMPUTED  :  BOOLEAN  :=  FALSE;

     PARAM_COMPUTED  :  BOOLEAN  :=  FALSE;

     DELAY_COMPUTED  :  BOOLEAN  :=  FALSE;

BEGIN

     TEST ("C97302A", "CHECK THAT WHENEVER AN INDEX IS PRESENT IN " &

                      "A TIMED_ENTRY_CALL, IT IS EVALUATED BEFORE " &

                      "ANY PARAMETER ASSOCIATIONS ARE EVALUATED, " &

                      "AND PARAMETER ASSOCIATIONS ARE EVALUATED " &

                      "BEFORE THE DELAY EXPRESSION" );

     DECLARE

          WAIT_TIME : DURATION := 3.0 * Impdef.One_Second;

          TYPE SHORT IS RANGE 10 .. 20;

          TASK  T  IS

               ENTRY  DO_IT_NOW_OR_WAIT

                                      ( SHORT )

                                      ( DID_YOU_DO_IT : IN BOOLEAN );

               ENTRY  KEEP_ALIVE;

          END  T;

          TASK BODY  T  IS

          BEGIN

               ACCEPT  KEEP_ALIVE;

          END  T;

          FUNCTION  F1 (X : SHORT) RETURN SHORT IS

          BEGIN

               INDEX_COMPUTED  :=  TRUE;

               RETURN (15);

          END  F1;

          FUNCTION  F2 RETURN BOOLEAN  IS

          BEGIN

               IF INDEX_COMPUTED THEN

                    NULL;

               ELSE

                    FAILED ( "INDEX NOT EVALUATED FIRST" );

               END IF;

               PARAM_COMPUTED  :=  TRUE;

               RETURN (FALSE);

          END  F2;

          FUNCTION F3 RETURN DURATION IS

          BEGIN

               IF PARAM_COMPUTED THEN

                    NULL;

               ELSE

                    FAILED ( "PARAMETERS NOT EVALUATED BEFORE DELAY " &

                             "EXPRESSION" );

               END IF;

               DELAY_COMPUTED := TRUE;

               RETURN (WAIT_TIME);

          END;

     BEGIN

          SELECT

               T.DO_IT_NOW_OR_WAIT

                                      ( F1 (15) )

                                      ( NOT F2 );

               FAILED ("RENDEZVOUS OCCURRED");

          OR

               DELAY F3;

          END SELECT;

          T.KEEP_ALIVE;

     END;   -- END OF BLOCK CONTAINING THE ENTRY CALLS.

     IF  DELAY_COMPUTED  THEN

          NULL;

     ELSE

          FAILED( "DELAY EXPRESSION NOT EVALUATED" );

     END IF;

     RESULT;

END  C97302A;