1-- C97301C.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 TIMED_ENTRY_CALL DELAYS FOR AT LEAST THE SPECIFIED
26-- AMOUNT OF TIME IF A RENDEVOUS IS NOT POSSIBLE.
27
28-- CASE  C:  AN ACCEPT STATEMENT FOR THE CALLED ENTRY HAS NOT BEEN
29--           REACHED.
30
31-- RJW 3/31/86
32
33with Impdef;
34WITH REPORT; USE REPORT;
35WITH CALENDAR; USE CALENDAR;
36PROCEDURE C97301C IS
37
38     OR_BRANCH_TAKEN : BOOLEAN := FALSE;
39
40BEGIN
41
42     TEST ("C97301C", "CHECK THAT A TIMED_ENTRY_CALL DELAYS FOR AT " &
43                      "LEAST THE SPECIFIED AMOUNT OF TIME WHEN AN " &
44                      "ACCEPT STATEMENT FOR THE CALLED ENTRY HAS " &
45                      "NOT BEEN REACHED" );
46
47
48     DECLARE
49          START_TIME : TIME;
50          STOP_TIME : TIME;
51          WAIT_TIME  : DURATION :=  3.0 * Impdef.One_Second;
52
53          TASK  T  IS
54               ENTRY NO_SPIN;
55               ENTRY DO_IT_NOW_OR_WAIT;
56          END  T;
57
58          TASK BODY  T  IS
59          BEGIN
60               ACCEPT NO_SPIN;
61               ACCEPT DO_IT_NOW_OR_WAIT;
62          END  T;
63
64     BEGIN
65          START_TIME := CLOCK;
66          SELECT
67               T.DO_IT_NOW_OR_WAIT;
68               FAILED("RENDEZVOUS OCCURRED");
69               ABORT T;
70          OR
71                                      -- THIS BRANCH MUST BE CHOSEN.
72               DELAY WAIT_TIME;
73               STOP_TIME := CLOCK;
74               IF STOP_TIME >= (WAIT_TIME + START_TIME) THEN
75                    NULL;
76               ELSE
77                    FAILED ( "INSUFFICIENT DELAY" );
78               END IF;
79               T.NO_SPIN;
80               OR_BRANCH_TAKEN := TRUE;
81               COMMENT( "OR_BRANCH TAKEN" );
82               T.DO_IT_NOW_OR_WAIT;
83          END SELECT;
84     EXCEPTION
85          WHEN TASKING_ERROR =>
86               FAILED ( "TASKING ERROR" );
87     END;
88                                     -- END OF BLOCK CONTAINING TIMED
89                                     -- ENTRY CALL.
90
91     -- BY NOW, TASK T IS TERMINATED (AND THE NONLOCALS UPDATED).
92
93     IF OR_BRANCH_TAKEN THEN
94          NULL;
95     ELSE
96          FAILED( "RENDEZVOUS ATTEMPTED" );
97     END IF;
98
99     RESULT;
100
101END C97301C;
102