| -- C97112A.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 DELAY STATEMENT IS ALLOWED IN THE SEQUENCE OF STATEMENTS |
| -- OF A SELECT ALTERNATIVE OF A SELECTIVE WAIT CONTAINING A TERMINATE |
| -- ALTERNATIVE OR AN ELSE PART. |
| |
| -- WRG 7/9/86 |
| |
| with Impdef; |
| WITH REPORT; USE REPORT; |
| WITH CALENDAR; USE CALENDAR; |
| PROCEDURE C97112A IS |
| |
| ACCEPT_ALTERNATIVE_TAKEN : BOOLEAN := FALSE; |
| |
| BEGIN |
| |
| TEST ("C97112A", "CHECK THAT A DELAY STATEMENT IS ALLOWED IN " & |
| "THE SEQUENCE OF STATEMENTS OF A SELECT " & |
| "ALTERNATIVE OF A SELECTIVE WAIT CONTAINING A " & |
| "TERMINATE ALTERNATIVE OR AN ELSE PART"); |
| |
| -------------------------------------------------- |
| |
| A: DECLARE |
| |
| TASK T IS |
| ENTRY E; |
| END T; |
| |
| TASK BODY T IS |
| BEFORE, AFTER : TIME; |
| BEGIN |
| SELECT |
| ACCEPT E; |
| ACCEPT_ALTERNATIVE_TAKEN := TRUE; |
| BEFORE := CLOCK; |
| DELAY 10.0 * Impdef.One_Second; |
| AFTER := CLOCK; |
| IF AFTER - BEFORE < 10.0 * Impdef.One_Second THEN |
| FAILED ("INSUFFICIENT DELAY (A)"); |
| END IF; |
| OR |
| TERMINATE; |
| END SELECT; |
| END T; |
| |
| BEGIN |
| |
| T.E; |
| |
| END A; |
| |
| IF NOT ACCEPT_ALTERNATIVE_TAKEN THEN |
| FAILED ("ACCEPT ALTERNATIVE NOT TAKEN"); |
| END IF; |
| |
| -------------------------------------------------- |
| |
| B: DECLARE |
| |
| TASK T IS |
| ENTRY E; |
| END T; |
| |
| TASK BODY T IS |
| BEFORE, AFTER : TIME; |
| BEGIN |
| --ENSURE THAT E HAS BEEN CALLED BEFORE PROCEEDING: |
| WHILE E'COUNT = 0 LOOP |
| DELAY 1.0 * Impdef.One_Second; |
| END LOOP; |
| |
| SELECT |
| ACCEPT E; |
| BEFORE := CLOCK; |
| DELAY 10.0 * Impdef.One_Second; |
| AFTER := CLOCK; |
| IF AFTER - BEFORE < 10.0 * Impdef.One_Second THEN |
| FAILED ("INSUFFICIENT DELAY (B-1)"); |
| END IF; |
| ELSE |
| FAILED ("ELSE PART EXECUTED (B-1)"); |
| END SELECT; |
| |
| SELECT |
| ACCEPT E; |
| FAILED ("ACCEPT STATEMENT EXECUTED (B-2)"); |
| ELSE |
| BEFORE := CLOCK; |
| DELAY 10.0 * Impdef.One_Second; |
| AFTER := CLOCK; |
| IF AFTER - BEFORE < 10.0 * Impdef.One_Second THEN |
| FAILED ("INSUFFICIENT DELAY (B-2)"); |
| END IF; |
| END SELECT; |
| EXCEPTION |
| WHEN OTHERS => |
| FAILED ("EXCEPTION RAISED"); |
| END T; |
| |
| BEGIN |
| |
| T.E; |
| |
| END B; |
| |
| -------------------------------------------------- |
| |
| RESULT; |
| |
| END C97112A; |