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Diffstat (limited to 'gcc/testsuite/ada/acats/tests/c9/c954010.a')
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diff --git a/gcc/testsuite/ada/acats/tests/c9/c954010.a b/gcc/testsuite/ada/acats/tests/c9/c954010.a deleted file mode 100644 index ac39c89a838..00000000000 --- a/gcc/testsuite/ada/acats/tests/c9/c954010.a +++ /dev/null @@ -1,286 +0,0 @@ --- C954010.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 an accept statement does not block. --- This test uses: Requeue to an entry in a different task --- Parameterless call --- Requeue with abort --- --- TEST DESCRIPTION: --- In the Distributor task, requeue two successive calls on the entries --- of two separate target tasks. Verify that the target tasks are --- run in parallel proving that the first requeue does not block --- while the first target rendezvous takes place. --- --- 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. --- --- This test is directed towards the BLOCKING of the REQUEUE only --- If the original caller does not block, the outcome of the test will --- not be affected. If the original caller does not continue after --- the return, the test will not pass. --- If the requeue gets placed on the wrong entry a failing test could --- pass (eg. if the first message is delivered to the second --- computation task and the second message to the first) - a check for --- this condition is made in other tests --- --- --- CHANGE HISTORY: --- 06 Dec 94 SAIC ACVC 2.0 --- ---! - -with Report; -with ImpDef; - -procedure C954010 is - - -- Mechanism to count the number of Message tasks completed - protected TC_Tasks_Completed is - procedure Increment; - function Count return integer; - private - Number_Complete : integer := 0; - end TC_Tasks_Completed; - -- - TC_Expected_To_Complete : constant integer := 2; - - - task type Message_Task; - type acc_Message_Task is access Message_Task; - - task Line_Driver is - entry Start; - end Line_Driver; - - task Distributor is - entry Input; - end Distributor; - - task Credit_Computation is - entry Input; - end Credit_Computation; - - task Debit_Computation is - entry Input; - entry TC_Artificial_Rendezvous_1; -- test purposes only - entry TC_Artificial_Rendezvous_2; -- test purposes only - end Debit_Computation; - - - -- Mechanism to count the number of Message tasks completed - protected body TC_Tasks_Completed is - procedure Increment is - begin - Number_Complete := Number_Complete + 1; - end Increment; - - function Count return integer is - begin - return Number_Complete; - end Count; - end TC_Tasks_Completed; - - - - -- Assemble messages received from an external source - -- Creates a message task for each and sends this to a Distributor - -- for appropriate disposal around the network of tasks - -- Such a 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 - - begin - - accept Start; -- Wait for trigger from main - - for i in 1..2 loop - declare - -- create a new message task - N : acc_Message_Task := new Message_Task; - begin - -- preparation code - null; -- stub - - end; -- declare - end loop; - - exception - when others => - Report.Failed ("Unexpected exception in Line_Driver"); - end Line_Driver; - - - task body Message_Task is - begin - -- Queue up on Distributor's Input queue - Distributor.Input; - - -- After the required computations have been performed - -- return the message appropriately (probably to an output - -- line driver - null; -- stub - - -- Increment to show completion of this task - TC_Tasks_Completed.Increment; - - exception - when others => - Report.Failed ("Unexpected exception in Message_Task"); - - end Message_Task; - - - -- Dispose each input message to the appropriate computation tasks - -- Normally this would be according to some parameters in the entry - -- but this simple test is using parameterless entries. - -- - task body Distributor is - Last_was_for_Credit_Computation : Boolean := false; -- switch - begin - loop - select - accept Input do - -- Determine to which task the message should be - -- distributed - -- For this test arbitrarily send the first to - -- Credit_Computation and the second to Debit_Computation - if Last_was_for_Credit_Computation then - requeue Debit_Computation.Input with abort; - else - Last_was_for_Credit_Computation := true; - requeue Credit_Computation.Input with abort; - end if; - end Input; - or - terminate; - end select; - end loop; - - exception - when others => - Report.Failed ("Unexpected exception in Distributor"); - end Distributor; - - - -- Computation task. After the computation is performed the rendezvous - -- in the original message task is completed. - task body Credit_Computation is - begin - loop - select - accept Input do - -- Perform the computations required for this message - -- - null; -- stub - - -- For the test: - -- Artificially rendezvous with Debit_Computation. - -- If the first requeue in Distributor has blocked - -- waiting for the current rendezvous to complete then the - -- second message will not be sent to Debit_Computation - -- which will still be waiting on its Input accept. - -- This task will HANG - -- - Debit_Computation.TC_Artificial_Rendezvous_1; - -- - 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; - TC_AR1_is_complete : Boolean := false; - begin - loop - select - accept Input do - -- Perform the computations required for this message - null; -- stub - end Input; - Message_Count := Message_Count + 1; - or - -- Guard until the rendezvous with the message for this task - -- has completed - when Message_Count > 0 => - accept TC_Artificial_Rendezvous_1; -- see comments in - -- Credit_Computation above - TC_AR1_is_complete := true; - or - -- Completion rendezvous with the main procedure - when TC_AR1_is_complete => - accept TC_Artificial_Rendezvous_2; - or - terminate; - end select; - end loop; - exception - when others => - Report.Failed ("Unexpected exception in Debit_Computation"); - - - end Debit_Computation; - - -begin -- c954010 - Report.Test ("C954010", "Requeue in an accept body does not block"); - - Line_Driver.Start; - - -- Ensure that both messages were delivered to the computation tasks - -- This shows that both requeues were effective. - -- - Debit_Computation.TC_Artificial_Rendezvous_2; - - -- Ensure that the message tasks completed - while (TC_Tasks_Completed.Count < TC_Expected_To_Complete) loop - delay ImpDef.Minimum_Task_Switch; - end loop; - - Report.Result; - -end C954010; |