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Diffstat (limited to 'gcc/testsuite/ada/acats/tests/c9/c954024.a')
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diff --git a/gcc/testsuite/ada/acats/tests/c9/c954024.a b/gcc/testsuite/ada/acats/tests/c9/c954024.a new file mode 100644 index 000000000..7f19a8183 --- /dev/null +++ b/gcc/testsuite/ada/acats/tests/c9/c954024.a @@ -0,0 +1,380 @@ +-- C954024.A +-- +-- Grant of Unlimited Rights +-- +-- Under contracts F33600-87-D-0337, F33600-84-D-0280, MDA903-79-C-0687, +-- F08630-91-C-0015, and DCA100-97-D-0025, the U.S. Government obtained +-- unlimited rights in the software and documentation contained herein. +-- Unlimited rights are defined in DFAR 252.227-7013(a)(19). By making +-- this public release, the Government intends to confer upon all +-- recipients unlimited rights equal to those held by the Government. +-- These rights include rights to use, duplicate, release or disclose the +-- released technical data and computer software in whole or in part, in +-- any manner and for any purpose whatsoever, and to have or permit others +-- to do so. +-- +-- DISCLAIMER +-- +-- ALL MATERIALS OR INFORMATION HEREIN RELEASED, MADE AVAILABLE OR +-- DISCLOSED ARE AS IS. THE GOVERNMENT MAKES NO EXPRESS OR IMPLIED +-- WARRANTY AS TO ANY MATTER WHATSOEVER, INCLUDING THE CONDITIONS OF THE +-- SOFTWARE, DOCUMENTATION OR OTHER INFORMATION RELEASED, MADE AVAILABLE +-- OR DISCLOSED, OR THE OWNERSHIP, MERCHANTABILITY, OR FITNESS FOR A +-- PARTICULAR PURPOSE OF SAID MATERIAL. +--* +-- +-- OBJECTIVE: +-- Check that a call to a protected entry can be requeued to a task +-- entry. Check that the requeue is placed on the correct entry; that the +-- original caller waits for the completion of the requeue and continues +-- after the requeued rendezvous. Check that the requeue does not block. +-- Specifically, check a requeue without abort from a protected entry to +-- an entry in a task. +-- +-- TEST DESCRIPTION: +-- In the Distributor protected object, requeue two successive calls on +-- the entries of two separate target tasks. Each task in each of the +-- paths adds identifying information in the transaction being passed. +-- This information is checked by the Message tasks on completion +-- ensuring that the requeues have been placed on the correct queues. +-- There is an artificial guard on the Credit Task to ensure that the +-- input is queued; this guard is released by the Debit task which +-- handles its input immediately. This ensures that we have one of the +-- requeued items actually queued for later handling and also verifies +-- that the requeuing process (in the protected object) is not blocked. +-- +-- This series of tests uses a simulation of a transaction driven +-- processing system. Line Drivers accept input from an external source +-- and build them into transaction records. These records are then +-- encapsulated in message tasks which remain extant for the life of the +-- transaction in the system. The message tasks put themselves on the +-- input queue of a Distributor object which, from information in the +-- transaction and/or system load conditions forwards them to other +-- operating tasks. These in turn might forward the transactions to yet +-- other tasks for further action. The routing is, in real life, +-- dynamic and unpredictable at the time of message generation. All +-- rerouting in this model is done by means of requeues. +-- +-- +-- CHANGE HISTORY: +-- 06 Dec 94 SAIC ACVC 2.0 +-- 08 Nov 95 SAIC Fixed reported problems for ACVC 2.0.1 +-- +--! + +with Report; +with ImpDef; +procedure C954024 is + + +begin -- C954024 + + Report.Test ("C954024", "Requeue from protected entry to task entry"); + + declare -- encapsulate the test + + -- Arbitrary test values + Credit_Return : constant := 1; + Debit_Return : constant := 2; + + type Transaction_Code is (Credit, Debit); + + type Transaction_Record; + type acc_Transaction_Record is access Transaction_Record; + type Transaction_Record is + record + ID : integer := 0; + Code : Transaction_Code := Debit; + Account_Number : integer := 0; + Stock_Number : integer := 0; + Quantity : integer := 0; + Return_Value : integer := 0; + TC_Message_Count : integer := 0; + TC_Thru_Dist : Boolean := false; + end record; + + + task type Message_Task is + entry Accept_Transaction (In_Transaction : acc_Transaction_Record); + end Message_Task; + type acc_Message_Task is access Message_Task; + + task Line_Driver is + entry Start; + end Line_Driver; + + task Credit_Computation is + entry Input(Transaction : acc_Transaction_Record); + end Credit_Computation; + + task Debit_Computation is + entry Input(Transaction : acc_Transaction_Record); + end Debit_Computation; + + protected Time_Lock is + procedure Credit_Start; + function Credit_Enabled return Boolean; + private + Credit_OK : Boolean := false; + end Time_Lock; + + protected body Time_Lock is + procedure Credit_Start is + begin + Credit_OK := true; + end Credit_Start; + + function Credit_Enabled return Boolean is + begin + return Credit_OK; + end Credit_Enabled; + end Time_Lock; + + + + protected Distributor is + entry Input (Transaction : acc_Transaction_Record); + end Distributor; + -- + -- + -- Dispose each input Transaction_Record to the appropriate + -- computation tasks + -- + protected body Distributor is + entry Input (Transaction : acc_Transaction_Record) when true is + -- barrier is always open + begin + -- Test Control: Set the indicator in the message to show it has + -- passed through the Distributor object + Transaction.TC_thru_Dist := true; + + -- Pass this transaction on to the appropriate computation + -- task + case Transaction.Code is + when Credit => + requeue Credit_Computation.Input; + when Debit => + requeue Debit_Computation.Input; + end case; + end Input; + end Distributor; + + + + + -- Assemble messages received from an external source + -- Creates a message task for each. The message tasks remain extant + -- for the life of the messages in the system. + -- NOTE: + -- The Line Driver task would normally be designed to loop continuously + -- creating the messages as input is received. Simulate this + -- but limit it to two dummy messages for this test and allow it + -- to terminate at that point + -- + task body Line_Driver is + Current_ID : integer := 1; + TC_Last_was_for_credit : Boolean := false; + + procedure Build_Credit_Record + ( Next_Transaction : acc_Transaction_Record ) is + Dummy_Account : constant integer := 100; + begin + Next_Transaction.ID := Current_ID; + Next_Transaction.Code := Credit; + + Next_Transaction.Account_Number := Dummy_Account; + Current_ID := Current_ID + 1; + end Build_Credit_Record; + + + procedure Build_Debit_Record + ( Next_Transaction : acc_Transaction_Record ) is + Dummy_Account : constant integer := 200; + begin + Next_Transaction.ID := Current_ID; + Next_Transaction.Code := Debit; + + Next_Transaction.Account_Number := Dummy_Account; + Current_ID := Current_ID + 1; + end Build_Debit_Record; + + begin + + accept Start; -- Wait for trigger from Main + + for i in 1..2 loop -- arbitrarily limit to two messages for the test + declare + -- Create a task for the next message + Next_Message_Task : acc_Message_Task := new Message_Task; + -- Create a record for it + Next_Transaction : acc_Transaction_Record + := new Transaction_Record; + begin + if TC_Last_was_for_credit then + Build_Debit_Record ( Next_Transaction ); + else + Build_Credit_Record( Next_Transaction ); + TC_Last_was_for_credit := true; + end if; + Next_Message_Task.Accept_Transaction ( Next_Transaction ); + end; -- declare + end loop; + + exception + when others => + Report.Failed ("Unexpected exception in Line_Driver"); + end Line_Driver; + + + + + task body Message_Task is + + TC_Original_Transaction_Code : Transaction_Code; + This_Transaction : acc_Transaction_Record := new Transaction_Record; + + begin + accept Accept_Transaction + (In_Transaction : acc_Transaction_Record) do + This_Transaction.all := In_Transaction.all; + end Accept_Transaction; + + -- Note the original code to ensure correct return + TC_Original_Transaction_Code := This_Transaction.Code; + + -- Queue up on Distributor's Input queue + Distributor.Input ( This_Transaction ); + -- This task will now wait for the requeued rendezvous + -- to complete before proceeding + + -- After the required computations have been performed + -- return the Transaction_Record appropriately (probably to an output + -- line driver) + null; -- stub + + + -- The following is all Test Control Code + + -- Check that the return values are as expected + if TC_Original_Transaction_Code /= This_Transaction.Code then + -- Incorrect rendezvous + Report.Failed ("Message Task: Incorrect code returned"); + end if; + + if This_Transaction.Code = Credit then + if This_Transaction.Return_Value /= Credit_Return or + This_Transaction.TC_Message_Count /= 1 or + not This_Transaction.TC_thru_Dist then + Report.Failed ("Expected path not traversed"); + end if; + else + if This_Transaction.Return_Value /= Debit_Return or + This_Transaction.TC_Message_Count /= 1 or + not This_Transaction.TC_thru_Dist then + Report.Failed ("Expected path not traversed"); + end if; + end if; + + exception + when others => + Report.Failed ("Unexpected exception in Message_Task"); + + end Message_Task; + + + + -- Computation task. + -- Note: After the computation is performed in this task and the + -- accept body is completed the rendezvous in the original + -- message task is completed. + -- + task body Credit_Computation is + Message_Count : integer := 0; + begin + loop + select + when Time_Lock.Credit_enabled => + accept Input ( Transaction : acc_Transaction_Record) do + -- Perform the computations required for this transaction + null; -- stub + + -- For the test: + if not Transaction.TC_thru_Dist then + Report.Failed + ("Credit Task: Wrong queue, Distributor bypassed"); + end if; + if Transaction.code /= Credit then + Report.Failed + ("Credit Task: Requeue delivered to the wrong queue"); + end if; + + -- for the test plug a known value and count + Transaction.Return_Value := Credit_Return; + -- one, and only one message should pass through + Message_Count := Message_Count + 1; + Transaction.TC_Message_Count := Message_Count; + end Input; + exit; -- one message is enough + else + delay ImpDef.Clear_Ready_Queue; -- poll + end select; + end loop; + exception + when others => + Report.Failed ("Unexpected exception in Credit_Computation"); + end Credit_Computation; + + + + -- Computation task. + -- Note: After the computation is performed in this task and the + -- accept body is completed the rendezvous in the original + -- message task is completed. + -- + task body Debit_Computation is + Message_Count : integer := 0; + begin + loop + select + accept Input (Transaction : acc_Transaction_Record) do + -- Perform the computations required for this message + null; -- stub + + -- For the test: + if not Transaction.TC_thru_Dist then + Report.Failed + ("Debit Task: Wrong queue, Distributor bypassed"); + end if; + if Transaction.code /= Debit then + Report.Failed + ("Debit Task: Requeue delivered to the wrong queue"); + end if; + + -- for the test plug a known value and count + Transaction.Return_Value := Debit_Return; + -- one, and only one, message should pass through + Message_Count := Message_Count + 1; + Transaction.TC_Message_Count := Message_Count; + -- for the test: once we have completed the only Debit + -- message release the Credit Messages which are queued + -- on the Credit Input queue + Time_Lock.Credit_Start; + + end Input; + or + terminate; + end select; + end loop; + exception + when others => + Report.Failed ("Unexpected exception in Debit_Computation"); + + end Debit_Computation; + + begin -- declare block + Line_Driver.Start; + end; -- test encapsulation + + Report.Result; + +end C954024; |