comparison gcc/testsuite/ada/acats/tests/c9/c954011.a @ 111:04ced10e8804

gcc 7
author kono
date Fri, 27 Oct 2017 22:46:09 +0900
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68:561a7518be6b 111:04ced10e8804
1 -- C954011.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 a requeue is placed on the correct entry; that the
28 -- original caller waits for the completion of the requeued rendezvous;
29 -- that the original caller continues after the rendezvous.
30 -- Specifically, this test checks requeue to an entry in a different
31 -- task, requeue where the entry has parameters, and requeue with
32 -- abort.
33 --
34 -- TEST DESCRIPTION:
35 -- In the Distributor task, requeue two successive calls on the entries
36 -- of two separate target tasks. Each task in each of the paths adds
37 -- identifying information in the transaction being passed. This
38 -- information is checked by the Message tasks on completion ensuring that
39 -- the requeues have been placed on the correct queues.
40 --
41 -- This series of tests uses a simulation of a transaction driven
42 -- processing system. Line Drivers accept input from an external source
43 -- and build them into transaction records. These records are then
44 -- encapsulated in message tasks which remain extant for the life of the
45 -- transaction in the system. The message tasks put themselves on the
46 -- input queue of a Distributor which, from information in the
47 -- transaction and/or system load conditions forwards them to other
48 -- operating tasks. These in turn might forward the transactions to yet
49 -- other tasks for further action. The routing is, in real life,
50 -- dynamic and unpredictable at the time of message generation. All
51 -- rerouting in this model is done by means of requeues.
52 --
53 --
54 -- CHANGE HISTORY:
55 -- 06 Dec 94 SAIC ACVC 2.0
56 -- 26 Nov 95 SAIC Fixed problems with shared global variables
57 -- for ACVC 2.0.1
58 --
59 --!
60
61 with Report;
62 with ImpDef;
63
64 procedure C954011 is
65
66
67 -- Arbitrary test values
68 Credit_Return : constant := 1;
69 Debit_Return : constant := 2;
70
71 type Transaction_Code is (Credit, Debit);
72
73 type Transaction_Record;
74 type acc_Transaction_Record is access Transaction_Record;
75 type Transaction_Record is
76 record
77 ID : integer := 0;
78 Code : Transaction_Code := Debit;
79 Account_Number : integer := 0;
80 Stock_Number : integer := 0;
81 Quantity : integer := 0;
82 Return_Value : integer := 0;
83 TC_Message_Count : integer := 0;
84 TC_Thru_Distrib : Boolean := false;
85 end record;
86
87 protected type Message_Mgr is
88 procedure Mark_Complete;
89 function Is_Complete return Boolean;
90 private
91 Complete : Boolean := False;
92 end Message_Mgr;
93
94 protected body Message_Mgr is
95 procedure Mark_Complete is
96 begin
97 Complete := True;
98 end Mark_Complete;
99
100 Function Is_Complete return Boolean is
101 begin
102 return Complete;
103 end Is_Complete;
104 end Message_Mgr;
105
106 TC_Debit_Message : Message_Mgr;
107 TC_Credit_Message : Message_Mgr;
108
109
110 task type Message_Task is
111 entry Accept_Transaction (In_Transaction : acc_Transaction_Record);
112 end Message_Task;
113 type acc_Message_Task is access Message_Task;
114
115 task Line_Driver is
116 entry Start;
117 end Line_Driver;
118
119 task Distributor is
120 entry Input(Transaction : acc_Transaction_Record);
121 end Distributor;
122
123 task Credit_Computation is
124 entry Input(Transaction : acc_Transaction_Record);
125 end Credit_Computation;
126
127 task Debit_Computation is
128 entry Input(Transaction : acc_Transaction_Record);
129 end Debit_Computation;
130
131
132
133 -- Assemble messages received from an external source
134 -- Creates a message task for each. The message tasks remain extant
135 -- for the life of the messages in the system.
136 -- The Line Driver task would normally be designed to loop continuously
137 -- creating the messages as input is received. Simulate this
138 -- but limit it to two dummy messages for this test and allow it
139 -- to terminate at that point
140 --
141 task body Line_Driver is
142 Current_ID : integer := 1;
143 TC_Last_was_for_credit : Boolean := false;
144
145 procedure Build_Credit_Record
146 ( Next_Transaction : acc_Transaction_Record ) is
147 Dummy_Account : constant integer := 100;
148 begin
149 Next_Transaction.ID := Current_ID;
150 Next_Transaction.Code := Credit;
151
152 Next_Transaction.Account_Number := Dummy_Account;
153 Current_ID := Current_ID + 1;
154 end Build_Credit_Record;
155
156
157 procedure Build_Debit_Record
158 ( Next_Transaction : acc_Transaction_Record ) is
159 Dummy_Account : constant integer := 200;
160 begin
161 Next_Transaction.ID := Current_ID;
162 Next_Transaction.Code := Debit;
163
164 Next_Transaction.Account_Number := Dummy_Account;
165 Current_ID := Current_ID + 1;
166 end Build_Debit_Record;
167
168 begin
169
170 accept Start; -- Wait for trigger from Main
171
172 for i in 1..2 loop -- arbitrarily limit to two messages for the test
173 declare
174 -- Create a task for the next message
175 Next_Message_Task : acc_Message_Task := new Message_Task;
176 -- Create a record for it
177 Next_Transaction : acc_Transaction_Record
178 := new Transaction_Record;
179 begin
180 if TC_Last_was_for_credit then
181 Build_Debit_Record ( Next_Transaction );
182 else
183 Build_Credit_Record( Next_Transaction );
184 TC_Last_was_for_credit := true;
185 end if;
186 Next_Message_Task.Accept_Transaction ( Next_Transaction );
187 end; -- declare
188 end loop;
189
190 exception
191 when others =>
192 Report.Failed ("Unexpected exception in Line_Driver");
193 end Line_Driver;
194
195
196
197
198 task body Message_Task is
199
200 TC_Original_Transaction_Code : Transaction_Code;
201 This_Transaction : acc_Transaction_Record := new Transaction_Record;
202
203 begin
204 accept Accept_Transaction (In_Transaction : acc_Transaction_Record) do
205 This_Transaction.all := In_Transaction.all;
206 end Accept_Transaction;
207
208 -- Note the original code to ensure correct return
209 TC_Original_Transaction_Code := This_Transaction.Code;
210
211 -- Queue up on Distributor's Input queue
212 Distributor.Input ( This_Transaction );
213 -- This task will now wait for the requeued rendezvous
214 -- to complete before proceeding
215
216 -- After the required computations have been performed
217 -- return the Transaction_Record appropriately (probably to an output
218 -- line driver)
219 null; -- stub
220
221
222 -- The following is all Test Control Code
223
224 -- Check that the return values are as expected
225 if TC_Original_Transaction_Code /= This_Transaction.Code then
226 -- Incorrect rendezvous
227 Report.Failed ("Message Task: Incorrect code returned");
228 end if;
229
230 if This_Transaction.Code = Credit then
231 if This_Transaction.Return_Value /= Credit_Return or
232 This_Transaction.TC_Message_Count /= 1 or not
233 This_Transaction.TC_Thru_Distrib then
234 Report.Failed ("Expected path not traversed");
235 end if;
236 TC_Credit_Message.Mark_Complete;
237 else
238 if This_Transaction.Return_Value /= Debit_Return or
239 This_Transaction.TC_Message_Count /= 1 or not
240 This_Transaction.TC_Thru_Distrib then
241 Report.Failed ("Expected path not traversed");
242 end if;
243 TC_Debit_Message.Mark_Complete;
244 end if;
245
246 exception
247 when others =>
248 Report.Failed ("Unexpected exception in Message_Task");
249
250 end Message_Task;
251
252
253
254 -- Dispose each input Transaction_Record to the appropriate
255 -- computation tasks
256 --
257 task body Distributor is
258
259 begin
260 loop
261 select
262 accept Input (Transaction : acc_Transaction_Record) do
263 -- Mark the message as having passed through the distributor
264 Transaction.TC_Thru_Distrib := true;
265
266 -- Pass this transaction on the appropriate computation
267 -- task
268 case Transaction.Code is
269 when Credit =>
270 requeue Credit_Computation.Input with abort;
271 when Debit =>
272 requeue Debit_Computation.Input with abort;
273 end case;
274 end Input;
275 or
276 terminate;
277 end select;
278 end loop;
279
280 exception
281 when others =>
282 Report.Failed ("Unexpected exception in Distributor");
283 end Distributor;
284
285
286
287 -- Computation task.
288 -- Note: After the computation is performed in this task and the
289 -- accept body is completed the rendezvous in the original
290 -- message task is completed.
291 --
292 task body Credit_Computation is
293 Message_Count : integer := 0;
294 begin
295 loop
296 select
297 accept Input ( Transaction : acc_Transaction_Record) do
298 -- Perform the computations required for this transaction
299 null; -- stub
300
301 -- For the test:
302 if not Transaction.TC_Thru_Distrib then
303 Report.Failed
304 ("Credit Task: Wrong queue, Distributor bypassed");
305 end if;
306 if Transaction.code /= Credit then
307 Report.Failed
308 ("Credit Task: Requeue delivered to the wrong queue");
309 end if;
310
311 -- for the test plug a known value and count
312 Transaction.Return_Value := Credit_Return;
313 -- one, and only one message should pass through
314 Message_Count := Message_Count + 1;
315 Transaction.TC_Message_Count := Message_Count;
316 end Input;
317 or
318 terminate;
319 end select;
320 end loop;
321 exception
322 when others =>
323 Report.Failed ("Unexpected exception in Credit_Computation");
324 end Credit_Computation;
325
326
327
328 -- Computation task.
329 -- Note: After the computation is performed in this task and the
330 -- accept body is completed the rendezvous in the original
331 -- message task is completed.
332 --
333 task body Debit_Computation is
334 Message_Count : integer := 0;
335 begin
336 loop
337 select
338 accept Input (Transaction : acc_Transaction_Record) do
339 -- Perform the computations required for this message
340 null; -- stub
341
342 -- For the test:
343 if not Transaction.TC_Thru_Distrib then
344 Report.Failed
345 ("Debit Task: Wrong queue, Distributor bypassed");
346 end if;
347 if Transaction.code /= Debit then
348 Report.Failed
349 ("Debit Task: Requeue delivered to the wrong queue");
350 end if;
351
352 -- for the test plug a known value and count
353 Transaction.Return_Value := Debit_Return;
354 -- one, and only one, message should pass through
355 Message_Count := Message_Count + 1;
356 Transaction.TC_Message_Count := Message_Count;
357 end Input;
358 or
359 terminate;
360 end select;
361 end loop;
362 exception
363 when others =>
364 Report.Failed ("Unexpected exception in Debit_Computation");
365
366
367 end Debit_Computation;
368
369
370 begin -- c954011
371
372 Report.Test ("C954011", "Requeue from task body to task entry");
373
374 Line_Driver.Start; -- Start the test
375
376 -- Ensure that the message tasks complete before reporting the result
377 while not (TC_Credit_Message.Is_Complete and
378 TC_Debit_Message.Is_Complete) loop
379 delay ImpDef.Minimum_Task_Switch;
380 end loop;
381
382 Report.Result;
383
384 end C954011;