| -- C97116A.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. |
| --* |
| -- OBJECTIVE: |
| -- CHECK THAT THE GUARD CONDITIONS IN A SELECTIVE WAIT STATEMENT |
| -- ARE NOT RE-EVALUATED DURING THE WAIT. |
| |
| -- HISTORY: |
| -- WRG 7/10/86 CREATED ORIGINAL TEST. |
| -- RJW 5/15/90 REMOVED SHARED VARIABLES. |
| |
| with Impdef; |
| WITH REPORT; USE REPORT; |
| PROCEDURE C97116A IS |
| |
| GUARD_EVALUATIONS : NATURAL := 0; |
| |
| FUNCTION GUARD RETURN BOOLEAN IS |
| BEGIN |
| GUARD_EVALUATIONS := GUARD_EVALUATIONS + 1; |
| RETURN FALSE; |
| END GUARD; |
| |
| FUNCTION SO_LONG RETURN DURATION IS |
| BEGIN |
| RETURN 20.0; |
| END SO_LONG; |
| |
| BEGIN |
| |
| TEST ("C97116A", "CHECK THAT THE GUARD CONDITIONS IN A " & |
| "SELECTIVE WAIT STATEMENT ARE NOT RE-EVALUATED " & |
| "DURING THE WAIT"); |
| |
| DECLARE |
| |
| TASK T IS |
| ENTRY E; |
| END T; |
| |
| TASK BODY T IS |
| BEGIN |
| SELECT |
| ACCEPT E; |
| FAILED ("ACCEPTED NONEXISTENT CALL TO E"); |
| OR WHEN GUARD => |
| DELAY 0.0; |
| FAILED ("EXECUTED ALTERNATIVE CLOSED BY FALSE " & |
| "GUARD FUNCTION" ); |
| OR |
| DELAY SO_LONG * Impdef.One_Second; |
| END SELECT; |
| EXCEPTION |
| WHEN OTHERS => |
| FAILED ("EXCEPTION RAISED"); |
| END T; |
| |
| TASK GET_CPU; |
| |
| TASK BODY GET_CPU IS |
| BEGIN |
| WHILE NOT T'TERMINATED LOOP |
| DELAY 1.0 * Impdef.One_Second; |
| END LOOP; |
| |
| END GET_CPU; |
| |
| BEGIN |
| |
| NULL; |
| |
| END; |
| |
| IF GUARD_EVALUATIONS /= 1 THEN |
| FAILED ("GUARD EVALUATED" & |
| NATURAL'IMAGE(GUARD_EVALUATIONS) & " TIMES"); |
| END IF; |
| |
| RESULT; |
| |
| END C97116A; |