| -- 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; |