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Diffstat (limited to 'gcc-4.9/gcc/testsuite/ada/acats/tests/c9/c954023.a')
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diff --git a/gcc-4.9/gcc/testsuite/ada/acats/tests/c9/c954023.a b/gcc-4.9/gcc/testsuite/ada/acats/tests/c9/c954023.a new file mode 100644 index 000000000..bfa69dc60 --- /dev/null +++ b/gcc-4.9/gcc/testsuite/ada/acats/tests/c9/c954023.a @@ -0,0 +1,558 @@ +-- C954023.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 requeue within a protected entry to a family of entries +-- in a different protected object is queued correctly +-- Call with parameters +-- Requeue with abort +-- +-- TEST DESCRIPTION: +-- One transaction is sent through to check the paths. After processing +-- this, the Credit task sets the "overloaded" indicator. Once this +-- indicator is set the Distributor (a protected object) queues lower +-- priority transactions on a family of queues (Wait_for_Underload) in +-- another protected object using a requeue. The Distributor still +-- delivers high priority transactions. After two more high priority +-- transactions have been processed by the Credit task the artificial +-- test code clears the overload condition to the threshold level that +-- allows only the items on the Medium priority queue of the family to be +-- released. When these have been processed and checked the test code +-- then lowers the priority threshold once again, allowing the Low +-- priority items from the last queue in the family to be released, +-- processed and checked. Note: the High priority queue in the family is +-- not used. +-- +-- 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 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 +-- +--! + +with Report; +with ImpDef; + +procedure C954023 is + + -- Artificial: number of messages required for this test + subtype TC_Trans_Range is integer range 1..8; + + TC_Credit_Messages_Expected : constant integer + := TC_Trans_Range'Last - 1; + + TC_Debit_Message_Complete : Boolean := false; + + + -- Mechanism for handshaking between tasks + protected TC_PO is + procedure Increment_Tasks_Completed_Count; + function Tasks_Completed_Count return integer; + function First_Message_Has_Arrived return Boolean; + procedure Set_First_Message_Has_Arrived; + private + Number_Complete : integer := 0; + Message_Arrived_Flag : Boolean := false; + end TC_PO; + -- + protected body TC_PO is + procedure Increment_Tasks_Completed_Count is + begin + Number_Complete := Number_Complete + 1; + end Increment_Tasks_Completed_Count; + + function Tasks_Completed_Count return integer is + begin + return Number_Complete; + end Tasks_Completed_Count; + + function First_Message_Has_Arrived return Boolean is + begin + return Message_Arrived_Flag; + end First_Message_Has_Arrived; + + procedure Set_First_Message_Has_Arrived is + begin + Message_Arrived_Flag := true; + end Set_First_Message_Has_Arrived; + + end TC_PO; + +begin + + Report.Test ("C954023", "Requeue from within a protected object" & + " to a family of entries in another protected object"); + + + declare -- encapsulate the test + + -- Arbitrary test values + Credit_Return : constant := 1; + Debit_Return : constant := 2; + + type Transaction_Code is (Credit, Debit); + type App_Priority is (Low, Medium, High); + type Priority_Block is array (App_Priority) of Boolean; + + type Transaction_Record; + type acc_Transaction_Record is access Transaction_Record; + type Transaction_Record is + record + ID : integer := 0; + Code : Transaction_Code := Debit; + Priority : App_Priority := High; + Account_Number : integer := 0; + Stock_Number : integer := 0; + Quantity : integer := 0; + Return_Value : integer := 0; + TC_Message_Count : integer := 0; + TC_Thru_Distrib : 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; + + protected Distributor is + procedure Set_Credit_Overloaded; + procedure Clear_Overload_to_Medium; + procedure Clear_Overload_to_Low; + entry Input (Transaction : acc_Transaction_Record); + private + Credit_Overloaded : Boolean := false; + end Distributor; + + protected Hold is + procedure Release_Medium; + procedure Release_Low; + -- Family of entry queues indexed by App_Priority + entry Wait_for_Underload (App_Priority) + (Transaction : acc_Transaction_Record); + private + Release : Priority_Block := (others => false); + end Hold; + + 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; + + -- + -- Dispose each input Transaction_Record to the appropriate + -- computation tasks + -- + protected body Distributor is + + procedure Set_Credit_Overloaded is + begin + Credit_Overloaded := true; + end Set_Credit_Overloaded; + + procedure Clear_Overload_to_Medium is + begin + Credit_Overloaded := false; + Hold.Release_Medium; -- Release all held messages on Medium + -- priority queue + end Clear_Overload_to_Medium; + + procedure Clear_Overload_to_Low is + begin + Credit_Overloaded := false; + Hold.Release_Low; -- Release all held messages on Low + -- priority queue + end Clear_Overload_to_Low; + + + + 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_Distrib := true; + + -- Pass this transaction on to the appropriate computation + -- task but temporarily hold low-priority transactions under + -- overload conditions + case Transaction.Code is + when Credit => + if Credit_Overloaded and Transaction.Priority /= High then + -- use the appropriate queue in the family + requeue Hold.Wait_for_Underload(Transaction.Priority) + with abort; + else + requeue Credit_Computation.Input with abort; + end if; + when Debit => + requeue Debit_Computation.Input with abort; + end case; + end Input; + end Distributor; + + + -- Low priority Message tasks are held on the Wait_for_Underload queue + -- while the Credit computation system is overloaded. Once the Credit + -- system reached underload send all queued messages immediately + -- + protected body Hold is + + -- Once these are executed the barrier conditions for the entries + -- are evaluated + procedure Release_Medium is + begin + Release(Medium) := true; + end Release_Medium; + -- + procedure Release_Low is + begin + Release(Low) := true; + end Release_Low; + + -- This is a family of entry queues indexed by App_Priority + entry Wait_for_Underload (for AP in App_Priority) + (Transaction : acc_Transaction_Record) + when Release(AP) is + begin + requeue Credit_Computation.Input with abort; + if Wait_for_Underload(AP)'count = 0 then + -- Queue is purged. Set up to hold next batch + Release(AP) := false; + end if; + end Wait_for_Underload; + + end Hold; + + + + + -- 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. + -- The Line Driver task would normally be designed to loop + -- creating the messages as input is received. Simulate this + -- but limit it to the required number of dummy messages needed for + -- this test and allow it to terminate at that point. Artificially + -- cycle the generation of High medium and Low priority Credit + -- transactions for this test. Send out one final Debit message + -- + task body Line_Driver is + Current_ID : integer := 1; + Current_Priority : App_Priority := High; + + 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.Priority := Current_Priority; + + 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 + + for Transaction_Numb in TC_Trans_Range loop -- TC: limit the loop + 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 Transaction_Numb = TC_Trans_Range'first then + -- Send the first Credit message + Build_Credit_Record ( Next_Transaction ); + Next_Message_Task.Accept_Transaction ( Next_Transaction ); + -- TC: Wait until the first message has been received by the + -- Credit task and it has set the Overload indicator for the + -- Distributor + while not TC_PO.First_Message_Has_Arrived loop + delay ImpDef.Minimum_Task_Switch; + end loop; + elsif Transaction_Numb = TC_Trans_Range'last then + -- For this test send the last transaction to the Debit task + -- to improve the mix + Build_Debit_Record( Next_Transaction ); + Next_Message_Task.Accept_Transaction ( Next_Transaction ); + else + -- TC: Cycle generation of high medium and low priority + -- transactions + if Current_Priority = High then + Current_Priority := Medium; + elsif + Current_Priority = Medium then + Current_Priority := Low; + else + Current_Priority := High; + end if; + Build_Credit_Record( Next_Transaction ); + Next_Message_Task.Accept_Transaction ( Next_Transaction ); + end if; + 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 + + -- For the test 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 + not This_Transaction.TC_thru_Distrib then + Report.Failed ("Expected path not traversed - Credit"); + end if; + TC_PO.Increment_Tasks_Completed_Count; + else + if This_Transaction.Return_Value /= Debit_Return or + This_Transaction.TC_Message_Count /= 1 or + not This_Transaction.TC_thru_Distrib then + Report.Failed ("Expected path not traversed - Debit"); + end if; + TC_Debit_Message_Complete := true; + end if; + + exception + when others => + Report.Failed ("Unexpected exception in Message_Task"); + end Message_Task; + + + + + + -- Computation task. After the computation is performed the rendezvous + -- in the original message task is completed. + task body Credit_Computation is + + Message_Count : integer := 0; + + begin + loop + select + accept Input ( Transaction : acc_Transaction_Record) do + + -- Perform the computations required for this transaction + null; -- stub + + + -- The following is all Test Control code: + + if not Transaction.TC_thru_Distrib 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; + + -- This is checked by the Message_Task: + Transaction.Return_Value := Credit_Return; + + -- Now take special action depending on which Message. + -- Note: The count gives the order in which the messages are + -- arriving at this task NOT the order in which they + -- were originally generated and sent out. + + Message_Count := Message_Count + 1; + + if Message_Count < 4 then + -- This is one of the first three messages which must + -- be High priority because we will set "Overload" after + -- the first, which is known to be High. The lower + -- priority should be waiting on the queues + if Transaction.Priority /= High then + Report.Failed + ("Credit Task: Lower priority trans. during overload"); + end if; + if Message_Count = 1 then + -- After the first message : + Distributor.Set_Credit_Overloaded; + -- Now flag the Line_Driver that the second and + -- subsequent messages may now be sent + TC_PO.Set_First_Message_Has_Arrived; + elsif + Message_Count = 3 then + -- The two high priority transactions created + -- subsequent to the overload have now been processed, + -- release the Medium priority items + Distributor.Clear_Overload_to_Medium; + end if; + elsif Message_Count < 6 then + -- This must be one of the Medium priority messages + if Transaction.Priority /= Medium then + Report.Failed + ("Credit Task: Second group not Medium Priority"); + end if; + if Message_Count = 5 then + -- The two medium priority transactions + -- have now been processed - release the + -- Low priority items + Distributor.Clear_Overload_to_Low; + end if; + elsif Message_Count < TC_Trans_Range'Last then + -- This must be one of the Low priority messages + if Transaction.Priority /= Low then + Report.Failed + ("Credit Task: Third group not Low Priority"); + end if; + else + -- Too many transactions have arrived. Duplicates? + -- the Debit transaction? + Report.Failed + ("Credit Task: Too many transactions"); + end if; + end Input; + or + terminate; + end select; + end loop; + exception + when others => + Report.Failed ("Unexpected exception in Credit_Computation"); + end Credit_Computation; + + + + -- Computation task. After the computation is performed 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_Distrib 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; + end Input; + or + terminate; + end select; + end loop; + exception + when others => + Report.Failed ("Unexpected exception in Debit_Computation"); + end Debit_Computation; + + + begin -- declare + + null; + + end; -- declare (test encapsulation) + + if (TC_PO.Tasks_Completed_Count /= TC_Credit_Messages_Expected) + and not TC_Debit_Message_Complete then + Report.Failed ("Incorrect number of Message Tasks completed"); + end if; + + Report.Result; + +end C954023; |