1-- C97120A.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 SELECTIVE WAIT DELAYS AT LEAST AS LONG AS IS SPECIFIED
26-- IN A DELAY ALTERNATIVE.
27
28-- WRG 7/11/86
29
30with Impdef;
31WITH REPORT;   USE REPORT;
32WITH CALENDAR; USE CALENDAR;
33PROCEDURE C97120A IS
34
35BEGIN
36
37     TEST ("C97120A", "CHECK THAT A SELECTIVE WAIT DELAYS AT LEAST " &
38                      "AS LONG AS IS SPECIFIED IN A DELAY ALTERNATIVE");
39
40     DECLARE
41
42          TASK T IS
43               ENTRY NO_GO;
44               ENTRY SYNCH;
45          END T;
46
47          TASK BODY T IS
48               BEFORE, AFTER : TIME;
49          BEGIN
50               -- ENSURE THAT SYNCH HAS BEEN CALLED BEFORE PROCEEDING:
51               WHILE SYNCH'COUNT = 0 LOOP
52                    DELAY 1.0 * Impdef.One_Second;
53               END LOOP;
54
55               BEFORE := CLOCK;
56               SELECT
57                    ACCEPT NO_GO;
58                    FAILED ("ACCEPTED NONEXISTENT ENTRY CALL");
59               OR
60                    DELAY 10.0 * Impdef.One_Second;
61                    AFTER := CLOCK;
62                    IF AFTER - BEFORE < 10.0 * Impdef.One_Second THEN
63                         FAILED ("INSUFFICIENT DELAY");
64                    END IF;
65               END SELECT;
66
67               ACCEPT SYNCH;
68          EXCEPTION
69               WHEN OTHERS =>
70                    FAILED ("EXCEPTION RAISED");
71          END T;
72
73     BEGIN
74
75          T.SYNCH;  -- SUSPEND MAIN TASK BEFORE READING CLOCK.
76
77     END;
78
79     RESULT;
80
81END C97120A;
82