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comparison gcc/testsuite/ada/acats/tests/c9/c974008.a @ 111:04ced10e8804

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author kono
date Fri, 27 Oct 2017 22:46:09 +0900
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1 -- C974008.A
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 --
26 -- OBJECTIVE:
27 -- Check that the abortable part of an asynchronous select statement
28 -- is not started if the triggering statement is a task entry call, and
29 -- the entry call is not queued.
30 --
31 -- Check that the sequence of statements of the triggering alternative
32 -- is executed after the abortable part is left.
33 --
34 -- TEST DESCRIPTION:
35 -- Declare a main procedure containing an asynchronous select with a task
36 -- entry call as triggering statement. Ensure that the task is waiting
37 -- at the accept statement so the rendezvous is executed immediately (the
38 -- entry call is not queued).
39 --
40 --
41 -- CHANGE HISTORY:
42 -- 06 Dec 94 SAIC ACVC 2.0
43 --
44 --!
45
46 package C974008_0 is -- Automated teller machine abstraction.
47
48
49 -- Flags for testing purposes:
50
51 Triggering_Statement_Completed : Boolean := False;
52 Count : Integer := 1234; -- Global to defeat
53 -- optimization.
54
55 type Key_Enum is (None, Cancel, Deposit, Withdraw);
56
57 type Card_Number_Type is private;
58 type Card_PIN_Type is private;
59 type ATM_Card_Type is private;
60
61
62 Transaction_Canceled : exception;
63
64
65 task type ATM_Keyboard_Task is
66 entry Cancel_Pressed;
67 end ATM_Keyboard_Task;
68
69
70 procedure Read_Card (Card : in out ATM_Card_Type);
71
72
73 procedure Perform_Transaction (Card : in ATM_Card_Type);
74
75 private
76
77 type Card_Number_Type is range 1 .. 9999;
78 type Card_PIN_Type is range 100 .. 999;
79
80 type ATM_Card_Type is record
81 Number : Card_Number_Type;
82 PIN : Card_PIN_Type;
83 end record;
84
85 end C974008_0;
86
87
88 --==================================================================--
89
90
91 with Report;
92 package body C974008_0 is
93
94
95 procedure Listen_For_Input (Key : out Key_Enum) is
96 begin
97 -- Simulate the situation where the user presses the cancel key
98 -- before the card is validated
99
100 -- press the cancel key immediately
101 Key := Cancel;
102
103 end Listen_For_Input;
104
105
106
107 -- One of these gets created as "Keyboard" for each transaction
108 --
109 task body ATM_Keyboard_Task is
110 Key_Pressed : Key_Enum := None;
111 begin
112 -- NOTE: Normal usage for this routine would be the loop with
113 -- the select statement included. This particular test
114 -- requires that the task be waiting at the accept
115 -- for the call. To ensure that this is the case the
116 -- extraneous commands are commented out (we leave them
117 -- in this form to show the reader the surrounds to the
118 -- fragment of code remaining)
119
120 -- loop
121
122 Listen_For_Input (Key_Pressed);
123
124 -- select
125 -- when (Key_Pressed = Cancel) => -- Guard is now
126 accept Cancel_Pressed do -- true, so accept
127 Triggering_Statement_Completed := True; -- queued entry
128 end Cancel_Pressed; -- call.
129
130 -- User has cancelled the transaction so we exit the
131 -- loop and allow the task to terminate
132 -- exit;
133 -- else
134 -- Key_Pressed := None;
135 -- end select;
136
137 -- end loop;
138 exception
139 when others =>
140 Report.Failed ("Unexpected Exception in ATM_Keyboard_Task");
141 end ATM_Keyboard_Task;
142
143
144
145 procedure Read_Card (Card : in out ATM_Card_Type) is
146 begin
147 Card.Number := 9999;
148 Card.PIN := 111;
149 end Read_Card;
150
151
152 procedure Perform_Transaction (Card : in ATM_Card_Type) is
153 begin
154 Report.Failed ("Triggering alternative sequence of statements " &
155 "not executed");
156 if not Triggering_Statement_Completed then
157 Report.Failed ("Triggering statement did not complete");
158 end if;
159 end Perform_Transaction;
160
161
162 end C974008_0;
163
164
165 --==================================================================--
166
167
168 with Report;
169 with ImpDef;
170
171 with C974008_0; -- Automated teller machine abstraction.
172 use C974008_0;
173
174 procedure C974008 is
175
176 Card_Data : ATM_Card_Type;
177
178 begin -- Main program.
179
180 Report.Test ("C974008", "Asynchronous Select: Trigger is a call to a " &
181 "waiting task entry and completes immediately");
182
183 Read_Card (Card_Data);
184
185 declare
186 -- Create the task for this transaction
187 Keyboard : C974008_0.ATM_Keyboard_Task;
188 begin
189
190 -- Ensure task is waiting at the accept
191 -- This is the time required to activate another task and allow it
192 -- to run to its first accept statement.
193 --
194 delay ImpDef.Switch_To_New_Task;
195
196 -- --
197 -- Asynchronous select is tested here --
198 -- --
199
200 select
201 Keyboard.Cancel_Pressed; -- Entry call is executed immediately
202
203 raise Transaction_Canceled; -- This is executed after Validate_Card
204 -- is aborted.
205 then abort
206
207 -- In other similar tests Validate_Card is called here. In this
208 -- test we just check to see if the abortable part is called at
209 -- all. Since the triggering call is not queued the abortable
210 -- part should not be started
211 --
212 Report.Failed ("Abortable part started");
213
214 end select;
215
216 Perform_Transaction (Card_Data); -- Should not be reached.
217 exception
218 when Transaction_Canceled =>
219
220 if not Triggering_Statement_Completed then
221 Report.Failed ("Triggering alternative sequence of statements " &
222 "executed but triggering statement not complete");
223 end if;
224
225 end;
226
227 Report.Result;
228
229 end C974008;