1-- C97112A.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 A DELAY STATEMENT IS ALLOWED IN THE SEQUENCE OF STATEMENTS 26-- OF A SELECT ALTERNATIVE OF A SELECTIVE WAIT CONTAINING A TERMINATE 27-- ALTERNATIVE OR AN ELSE PART. 28 29-- WRG 7/9/86 30 31with Impdef; 32WITH REPORT; USE REPORT; 33WITH CALENDAR; USE CALENDAR; 34PROCEDURE C97112A IS 35 36 ACCEPT_ALTERNATIVE_TAKEN : BOOLEAN := FALSE; 37 38BEGIN 39 40 TEST ("C97112A", "CHECK THAT A DELAY STATEMENT IS ALLOWED IN " & 41 "THE SEQUENCE OF STATEMENTS OF A SELECT " & 42 "ALTERNATIVE OF A SELECTIVE WAIT CONTAINING A " & 43 "TERMINATE ALTERNATIVE OR AN ELSE PART"); 44 45 -------------------------------------------------- 46 47 A: DECLARE 48 49 TASK T IS 50 ENTRY E; 51 END T; 52 53 TASK BODY T IS 54 BEFORE, AFTER : TIME; 55 BEGIN 56 SELECT 57 ACCEPT E; 58 ACCEPT_ALTERNATIVE_TAKEN := TRUE; 59 BEFORE := CLOCK; 60 DELAY 10.0 * Impdef.One_Second; 61 AFTER := CLOCK; 62 IF AFTER - BEFORE < 10.0 * Impdef.One_Second THEN 63 FAILED ("INSUFFICIENT DELAY (A)"); 64 END IF; 65 OR 66 TERMINATE; 67 END SELECT; 68 END T; 69 70 BEGIN 71 72 T.E; 73 74 END A; 75 76 IF NOT ACCEPT_ALTERNATIVE_TAKEN THEN 77 FAILED ("ACCEPT ALTERNATIVE NOT TAKEN"); 78 END IF; 79 80 -------------------------------------------------- 81 82 B: DECLARE 83 84 TASK T IS 85 ENTRY E; 86 END T; 87 88 TASK BODY T IS 89 BEFORE, AFTER : TIME; 90 BEGIN 91 --ENSURE THAT E HAS BEEN CALLED BEFORE PROCEEDING: 92 WHILE E'COUNT = 0 LOOP 93 DELAY 1.0 * Impdef.One_Second; 94 END LOOP; 95 96 SELECT 97 ACCEPT E; 98 BEFORE := CLOCK; 99 DELAY 10.0 * Impdef.One_Second; 100 AFTER := CLOCK; 101 IF AFTER - BEFORE < 10.0 * Impdef.One_Second THEN 102 FAILED ("INSUFFICIENT DELAY (B-1)"); 103 END IF; 104 ELSE 105 FAILED ("ELSE PART EXECUTED (B-1)"); 106 END SELECT; 107 108 SELECT 109 ACCEPT E; 110 FAILED ("ACCEPT STATEMENT EXECUTED (B-2)"); 111 ELSE 112 BEFORE := CLOCK; 113 DELAY 10.0 * Impdef.One_Second; 114 AFTER := CLOCK; 115 IF AFTER - BEFORE < 10.0 * Impdef.One_Second THEN 116 FAILED ("INSUFFICIENT DELAY (B-2)"); 117 END IF; 118 END SELECT; 119 EXCEPTION 120 WHEN OTHERS => 121 FAILED ("EXCEPTION RAISED"); 122 END T; 123 124 BEGIN 125 126 T.E; 127 128 END B; 129 130 -------------------------------------------------- 131 132 RESULT; 133 134END C97112A; 135