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-- C97301A.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 TIMED_ENTRY_CALL DELAYS FOR AT LEAST THE SPECIFIED

-- AMOUNT OF TIME IF A RENDEVOUS IS NOT POSSIBLE.

-- CASE  A:  THE TASK TO BE CALLED HAS NOT YET BEEN ACTIVATED AS OF THE

--           MOMENT OF CALL.

-- RJW 3/31/86

with Impdef;

WITH REPORT; USE REPORT;

WITH CALENDAR; USE CALENDAR;

PROCEDURE C97301A IS

     WAIT_TIME : CONSTANT DURATION := 10.0 * Impdef.One_Second;

     OR_BRANCH_TAKEN : INTEGER := 3;

BEGIN

     TEST ("C97301A", "CHECK THAT A TIMED_ENTRY_CALL DELAYS FOR AT " &

                      "LEAST THE SPECIFIED AMOUNT OF TIME WHEN THE " &

                      "CALLED TASK IS NOT ACTIVE" );

     ------------------------------------------------------------------

     DECLARE

          TASK  T  IS

               ENTRY  DO_IT_NOW_OR_WAIT ( AUTHORIZED : IN BOOLEAN );

          END  T;

          TASK BODY  T  IS

               PACKAGE       SECOND_ATTEMPT  IS    END  SECOND_ATTEMPT;

               PACKAGE BODY  SECOND_ATTEMPT  IS

                    START_TIME : TIME;

               BEGIN

                    START_TIME := CLOCK;

                    SELECT

                         DO_IT_NOW_OR_WAIT (FALSE); --CALLING OWN ENTRY.

                    OR

                                      -- THEREFORE THIS BRANCH

                                      --    MUST BE CHOSEN.

                         DELAY WAIT_TIME;

                         IF CLOCK >= (WAIT_TIME + START_TIME) THEN

                              NULL;

                         ELSE

                              FAILED ( "INSUFFICIENT DELAY (#2)" );

                         END IF;

                         OR_BRANCH_TAKEN := 2 * OR_BRANCH_TAKEN;

                         COMMENT( "OR_BRANCH  TAKEN  (#2)" );

                    END SELECT;

               END  SECOND_ATTEMPT;

          BEGIN

               ACCEPT DO_IT_NOW_OR_WAIT ( AUTHORIZED : IN BOOLEAN )  DO

                    IF  AUTHORIZED  THEN

                         COMMENT( "AUTHORIZED ENTRY_CALL" );

                    ELSE

                         FAILED( "UNAUTHORIZED ENTRY_CALL" );

                    END IF;

               END DO_IT_NOW_OR_WAIT;

          END  T;

          PACKAGE       FIRST_ATTEMPT  IS      END  FIRST_ATTEMPT;

          PACKAGE BODY  FIRST_ATTEMPT  IS

               START_TIME : TIME;

          BEGIN

               START_TIME := CLOCK;

               SELECT

                    T.DO_IT_NOW_OR_WAIT (FALSE);

               OR

                                      -- THIS BRANCH MUST BE CHOSEN.

                    DELAY WAIT_TIME;

                    IF CLOCK >= (WAIT_TIME + START_TIME) THEN

                         NULL;

                    ELSE

                         FAILED ( "INSUFFICIENT DELAY (#1)" );

                    END IF;

                    OR_BRANCH_TAKEN := 1 + OR_BRANCH_TAKEN;

                    COMMENT( "OR_BRANCH  TAKEN  (#1)" );

               END SELECT;

          END  FIRST_ATTEMPT;

     BEGIN

          T.DO_IT_NOW_OR_WAIT ( TRUE );   -- TO SATISFY THE SERVER'S

                                          --     WAIT FOR SUCH A CALL.

     EXCEPTION

          WHEN  TASKING_ERROR  =>

               FAILED( "TASKING ERROR" );

     END ;

     ------------------------------------------------------------------

     -- BY NOW, THE TASK IS TERMINATED  (AND THE NONLOCALS UPDATED).

     CASE  OR_BRANCH_TAKEN  IS

          WHEN  3  =>

               FAILED( "NO 'OR'; BOTH (?) RENDEZVOUS ATTEMPTED?" );

          WHEN  4  =>

               FAILED( "'OR' #1 ONLY; RENDEZVOUS (#2) ATTEMPTED?" );

          WHEN  6  =>

               FAILED( "'OR' #2 ONLY; RENDEZVOUS (#1) ATTEMPTED?" );

          WHEN  7  =>

               FAILED( "WRONG ORDER FOR 'OR':  #2,#1" );

          WHEN  8  =>

               NULL;

          WHEN  OTHERS  =>

               FAILED( "WRONG CASE_VALUE" );

     END CASE;

     RESULT;

END  C97301A;