1-- C97203B.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 CONDITIONAL_ENTRY_CALL CAN APPEAR IN PLACES WHERE A
26--     SELECTIVE_WAIT  CANNOT.
27
28-- PART 2: PROCEDURE BODY EMBEDDED IN TASK BODY.
29
30
31-- RM 4/09/1982
32
33
34WITH REPORT;
35USE REPORT;
36PROCEDURE  C97203B  IS
37
38
39BEGIN
40
41
42     TEST ( "C97203B" , "CHECK THAT A  CONDITIONAL_ENTRY_CALL  CAN" &
43                        " APPEAR WHERE A  SELECTIVE_WAIT  CANNOT" );
44
45
46     -------------------------------------------------------------------
47
48
49     DECLARE
50
51
52          TASK  TT  IS
53               ENTRY  A ( AUTHORIZED : IN BOOLEAN );
54          END  TT ;
55
56
57          TASK BODY  TT  IS
58
59
60               PROCEDURE  WITHIN_TASK_BODY ;
61
62
63               PROCEDURE  WITHIN_TASK_BODY  IS
64               BEGIN
65
66                    SELECT  -- NOT A SELECTIVE_WAIT
67                         A ( FALSE ) ;  -- CALLING (OWN) ENTRY
68                    ELSE
69                         COMMENT( "ALTERNATIVE BRANCH TAKEN" );
70                    END SELECT;
71
72               END  WITHIN_TASK_BODY ;
73
74
75          BEGIN
76
77
78               -- CALL THE INNER PROC. TO FORCE EXEC. OF COND_E_CALL
79               WITHIN_TASK_BODY ;
80
81
82               ACCEPT  A ( AUTHORIZED : IN BOOLEAN )  DO
83
84                    IF  AUTHORIZED  THEN
85                         COMMENT(  "AUTHORIZED ENTRY_CALL" );
86                    ELSE
87                         FAILED( "UNAUTHORIZED ENTRY_CALL" );
88                    END IF;
89
90               END  A ;
91
92          END  TT ;
93
94
95          PROCEDURE  OUTSIDE_TASK_BODY  IS
96          BEGIN
97
98               SELECT  -- NOT A SELECTIVE_WAIT
99                    TT.A ( FALSE ) ;  -- UNBORN
100               ELSE
101                    COMMENT( "(OUT:) ALTERNATIVE BRANCH TAKEN" );
102               END SELECT;
103
104          END  OUTSIDE_TASK_BODY ;
105
106
107          PACKAGE       CREATE_OPPORTUNITY_TO_CALL           IS END;
108          PACKAGE BODY  CREATE_OPPORTUNITY_TO_CALL  IS
109          BEGIN
110               -- CALL THE OTHER PROC. TO FORCE EXEC. OF COND_E_CALL
111               OUTSIDE_TASK_BODY ;
112          END  CREATE_OPPORTUNITY_TO_CALL ;
113
114
115     BEGIN
116
117          TT.A ( TRUE );
118
119     EXCEPTION
120
121          WHEN  TASKING_ERROR  =>
122               FAILED( "TASKING ERROR" );
123
124     END  ;
125
126     -------------------------------------------------------------------
127
128     RESULT ;
129
130
131END  C97203B ;
132