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comparison gcc/testsuite/ada/acats/tests/c9/c960004.a @ 111:04ced10e8804

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author kono
date Fri, 27 Oct 2017 22:46:09 +0900
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1 -- C960004.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 -- With the triggering statement being a delay and with the Asynchronous
28 -- Select statement being in a tasking situation complete the abortable
29 -- part before the delay expires. Check that the delay is cancelled
30 -- and that the optional statements in the triggering part are not
31 -- executed.
32 --
33 -- TEST DESCRIPTION:
34 -- Simulate the creation of a carrier task to control the output of
35 -- a message via a line driver. If the message sending process is
36 -- not complete (the completion of the rendezvous) within a
37 -- specified time the carrier task is designed to take corrective action.
38 -- Use an asynchronous select to control the timing; arrange that
39 -- the abortable part (the rendezvous) completes almost immediately.
40 -- Check that the optional statements are not executed and that the
41 -- test completes well before the time of the trigger delay request thus
42 -- showing that it has been cancelled.
43 --
44 --
45 -- CHANGE HISTORY:
46 -- 06 Dec 94 SAIC ACVC 2.0
47 --
48 --!
49
50
51 with Report;
52 with Ada.Calendar;
53
54 procedure C960004 is
55
56 function "-" (Left, Right : Ada.Calendar.Time)
57 return Duration renames Ada.Calendar."-";
58 TC_Start_Time : Ada.Calendar.Time := Ada.Calendar.Clock;
59 TC_Elapsed_Time : duration;
60
61 -- Note: a properly executing test will complete immediately.
62 Allowable_ACK_Time : duration := 600.0;
63
64 begin
65
66 Report.Test ("C960004", "ATC: When abortable part completes before " &
67 "a triggering delay, check that the delay " &
68 "is cancelled & optional statements " &
69 "are not performed. Tasking situation");
70
71 declare -- To get the Report.Result after all has completed
72
73 type Sequence_Number is range 1..1_999_999; -- Message Number
74 subtype S_length_subtype is integer range 1..80;
75
76 type Message_Type (Max_String : S_length_subtype := 1) is
77 record
78 Message_Number : Sequence_Number;
79 Alpha : string(1..Max_String);
80 end record;
81
82 -- TC: Dummy message for the test
83 Dummy_Alpha : constant string := "This could be printed";
84 Message_to_Send : Message_Type (Max_string => Dummy_Alpha'length);
85
86
87 -- This is the carrier task. One of these is created for each
88 -- message that requires ACK
89 --
90 task type Require_ACK_task is
91 entry Message_In (Message_to_Send: Message_Type);
92 end Require_ACK_task;
93 type acc_Require_ACK_task is access Require_ACK_task;
94
95
96 --:::::::::::::::::::::::::::::::::
97 -- There would also be another task type "No_ACK_Task" which would
98 -- be the carrier task for those messages not requiring an ACK.
99 -- This task would call Send_Message.ACK_Not_Required. It is not
100 -- shown in this test as it is not used.
101 --:::::::::::::::::::::::::::::::::
102
103
104
105 task Send_Message is
106 entry ACK_Required (Message_to_Send: Message_Type);
107 entry ACK_Not_Required (Message_to_Send: Message_Type);
108 end Send_Message;
109
110
111 -- This is the carrier task. One of these is created for each
112 -- message that requires ACK
113 --
114 task body Require_ACK_task is
115 Hold_Message : Message_Type;
116
117 procedure Time_Out (Failed_Message_Number : Sequence_Number) is
118 begin
119 -- Take remedial action on the timed-out message
120 null; -- stub
121
122 Report.Failed ("Optional statements in triggering part" &
123 " were performed");
124 end Time_out;
125
126 begin
127 accept Message_In (Message_to_Send: Message_Type) do
128 Hold_Message := Message_to_Send; -- to release caller
129 end Message_In;
130
131 -- Now put the message out to the Send_Message task and
132 -- wait (no more than Allowable_Ack_Time) for its completion
133 --
134 select
135 delay Allowable_ACK_Time;
136 -- ACK not received in specified time
137 Time_out (Hold_Message.Message_Number);
138 then abort
139 -- If the rendezvous is not completed in the above time, this
140 -- call is cancelled
141 -- Note: for this test this call will complete immediately
142 -- and thus the trigger should be cancelled
143 Send_Message.ACK_Required (Hold_Message);
144 end select;
145
146 exception
147 when others =>
148 Report.Failed ("Unexpected exception in Require_ACK_task");
149 end Require_ACK_task;
150
151
152 -- This is the Line Driver task
153 --
154 task body Send_Message is
155 Hold_Non_ACK_Message : Message_Type;
156 begin
157 loop
158 select
159 accept ACK_Required (Message_to_Send: Message_Type) do
160 -- Here send the message from within the rendezvous
161 -- waiting for full transmission to complete
162 null; -- stub
163 -- Note: In this test this accept will complete immediately
164 end ACK_Required;
165 or
166 accept ACK_Not_Required (Message_to_Send: Message_Type) do
167 Hold_Non_ACK_Message := Message_to_Send;
168 end ACK_Not_Required;
169 -- Here send the message from outside the rendezvous
170 null; -- stub
171 or
172 terminate;
173 end select;
174 end loop;
175 exception
176 when others => Report.Failed ("Unexpected exception in Send_Message");
177 end Send_Message;
178
179 begin -- declare
180 -- Build a dummy message
181 Message_to_Send.Alpha := Dummy_Alpha;
182 Message_to_Send.Message_Number := 110_693;
183
184 declare
185 New_Require_ACK_task : acc_Require_ACK_task :=
186 new Require_ACK_task;
187 begin
188 -- Create a carrier task for this message and pass the latter in
189 New_Require_ACK_task.Message_In (Message_to_Send);
190 end; -- declare
191
192 end; -- declare
193
194 --Once we are out of the above declarative region, all tasks have completed
195
196 TC_Elapsed_Time := Ada.Calendar.Clock - TC_Start_Time;
197
198 -- Check that the test has completed well before the time of the requested
199 -- delay to ensure the delay was cancelled
200 --
201 if (TC_Elapsed_Time > Allowable_ACK_Time/2) then
202 Report.Failed ("Triggering delay statement was not cancelled");
203 end if;
204
205 Report.Result;
206 end C960004;