c97301d.ada

来自「用于进行gcc测试」· ADA 代码 · 共 107 行

-- C97301D.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  D:  THE BODY OF THE TASK CONTAINING THE CALLED ENTRY
--           DOES NOT CONTAIN AN ACCEPT_STATEMENT FOR THAT ENTRY.

-- RJW 3/31/86

with Impdef;
WITH REPORT; USE REPORT;
WITH CALENDAR; USE CALENDAR;
PROCEDURE C97301D IS

     OR_BRANCH_TAKEN : BOOLEAN := FALSE;

BEGIN

     TEST ("C97301D", "CHECK THAT A TIMED_ENTRY_CALL DELAYS FOR AT " &
                      "LEAST THE SPECIFIED AMOUNT OF TIME WHEN THE " &
                      "BODY OF THE TASK CONTAINING THE CALLED ENTRY " &
                      "DOES NOT CONTAIN AN ACCEPT_STATEMENT FOR " &
                      "THAT ENTRY" );

     DECLARE
          START_TIME : TIME;
          WAIT_TIME : CONSTANT DURATION := 10.0 * Impdef.One_Second;

          TASK  T  IS
               ENTRY  DO_IT_NOW_OR_WAIT;
               ENTRY  KEEP_ALIVE;
          END  T;

          TASK BODY  T  IS
          BEGIN

               -- NO ACCEPT_STATEMENT FOR THE ENTRY_CALL BEING TESTED.

               ACCEPT  KEEP_ALIVE;  -- TO PREVENT THIS SERVER TASK FROM
                                     --     TERMINATING IF
                                     --     UPON ACTIVATION
                                     --     IT GETS TO RUN
                                     --     AHEAD OF THE CALLER (WHICH
                                     --     WOULD LEAD TO A SUBSEQUENT
                                     --     TASKING_ERROR AT THE TIME
                                     --     OF THE NO-WAIT CALL).

          END;

     BEGIN
          START_TIME := CLOCK;
          SELECT
               T.DO_IT_NOW_OR_WAIT;
          OR
                            --  THIS BRANCH MUST BE CHOSEN.
               DELAY WAIT_TIME;
               IF CLOCK >= (WAIT_TIME + START_TIME) THEN
                    NULL;
               ELSE
                    FAILED ( "INSUFFICIENT WAITING TIME" );
               END IF;
               OR_BRANCH_TAKEN := TRUE;
               COMMENT( "OR_BRANCH  TAKEN" );
          END SELECT;

          T.KEEP_ALIVE;
     EXCEPTION
          WHEN TASKING_ERROR =>
               FAILED ( "TASKING ERROR RAISED" );

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

     -- BY NOW, THE TASK IS TERMINATED.

     IF  OR_BRANCH_TAKEN  THEN
          NULL;
     ELSE
          FAILED( "RENDEZVOUS ATTEMPTED?" );
     END IF;

     RESULT;

END  C97301D;