1-- C97120B.ADA 2 3-- Grant of Unlimited Rights 4-- 5-- Under contracts F33600-87-D-0337, F33600-84-D-0280, MDA903-79-C-0687, 6-- F08630-91-C-0015, and DCA100-97-D-0025, the U.S. Government obtained 7-- unlimited rights in the software and documentation contained herein. 8-- Unlimited rights are defined in DFAR 252.227-7013(a)(19). By making 9-- this public release, the Government intends to confer upon all 10-- recipients unlimited rights equal to those held by the Government. 11-- These rights include rights to use, duplicate, release or disclose the 12-- released technical data and computer software in whole or in part, in 13-- any manner and for any purpose whatsoever, and to have or permit others 14-- to do so. 15-- 16-- DISCLAIMER 17-- 18-- ALL MATERIALS OR INFORMATION HEREIN RELEASED, MADE AVAILABLE OR 19-- DISCLOSED ARE AS IS. THE GOVERNMENT MAKES NO EXPRESS OR IMPLIED 20-- WARRANTY AS TO ANY MATTER WHATSOEVER, INCLUDING THE CONDITIONS OF THE 21-- SOFTWARE, DOCUMENTATION OR OTHER INFORMATION RELEASED, MADE AVAILABLE 22-- OR DISCLOSED, OR THE OWNERSHIP, MERCHANTABILITY, OR FITNESS FOR A 23-- PARTICULAR PURPOSE OF SAID MATERIAL. 24--* 25-- CHECK THAT IF A SPECIFIED DELAY IS ZERO OR NEGATIVE AND AN ENTRY CALL 26-- IS WAITING AT AN OPEN ALTERNATIVE WHEN THE SELECTIVE WAIT IS 27-- EXECUTED, THE CALL IS ACCEPTED. 28 29-- WRG 7/11/86 30 31with Impdef; 32WITH REPORT; USE REPORT; 33PROCEDURE C97120B IS 34 35 ZERO, NEG : DURATION := 1.0; 36 37BEGIN 38 39 TEST ("C97120B", "CHECK THAT IF A SPECIFIED DELAY IS ZERO OR " & 40 "NEGATIVE AND AN ENTRY CALL IS WAITING AT AN " & 41 "OPEN ALTERNATIVE WHEN THE SELECTIVE WAIT IS " & 42 "EXECUTED, THE CALL IS ACCEPTED"); 43 44 IF EQUAL (3, 3) THEN 45 ZERO := 0.0; 46 NEG := -1.0; 47 END IF; 48 49 DECLARE 50 51 TASK T IS 52 ENTRY E; 53 END T; 54 55 TASK BODY T IS 56 BEGIN 57 WHILE E'COUNT = 0 LOOP 58 DELAY 1.0 * Impdef.One_Second; 59 END LOOP; 60 61 A: BEGIN 62 SELECT 63 WHEN IDENT_BOOL (TRUE) => 64 ACCEPT E; 65 OR 66 DELAY ZERO * Impdef.One_Second; 67 FAILED ("ZERO DELAY ALTERNATIVE TAKEN"); 68 ACCEPT E; 69 END SELECT; 70 EXCEPTION 71 WHEN OTHERS => 72 FAILED ("EXCEPTION RAISED (A)"); 73 END A; 74 75 WHILE E'COUNT = 0 LOOP 76 DELAY 1.0 * Impdef.One_Second; 77 END LOOP; 78 79 B: BEGIN 80 SELECT 81 ACCEPT E; 82 OR 83 DELAY NEG; 84 FAILED ("NEGATIVE DELAY ALTERNATIVE TAKEN"); 85 ACCEPT E; 86 END SELECT; 87 EXCEPTION 88 WHEN OTHERS => 89 FAILED ("EXCEPTION RAISED (B)"); 90 END B; 91 92 END T; 93 94 BEGIN 95 96 T.E; 97 T.E; 98 99 END; 100 101 RESULT; 102 103END C97120B; 104