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1 149 jeremybenn
-- C940014.A
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--
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--                             Grant of Unlimited Rights
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--
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--     Under contracts F33600-87-D-0337, F33600-84-D-0280, MDA903-79-C-0687,
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--     F08630-91-C-0015, and DCA100-97-D-0025, the U.S. Government obtained
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--     unlimited rights in the software and documentation contained herein.
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--     Unlimited rights are defined in DFAR 252.227-7013(a)(19).  By making
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--     this public release, the Government intends to confer upon all
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--     recipients unlimited rights  equal to those held by the Government.
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--     These rights include rights to use, duplicate, release or disclose the
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--     released technical data and computer software in whole or in part, in
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--     any manner and for any purpose whatsoever, and to have or permit others
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--     to do so.
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--
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--                                    DISCLAIMER
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--
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--     ALL MATERIALS OR INFORMATION HEREIN RELEASED, MADE AVAILABLE OR
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--     DISCLOSED ARE AS IS.  THE GOVERNMENT MAKES NO EXPRESS OR IMPLIED
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--     WARRANTY AS TO ANY MATTER WHATSOEVER, INCLUDING THE CONDITIONS OF THE
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--     SOFTWARE, DOCUMENTATION OR OTHER INFORMATION RELEASED, MADE AVAILABLE
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--     OR DISCLOSED, OR THE OWNERSHIP, MERCHANTABILITY, OR FITNESS FOR A
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--     PARTICULAR PURPOSE OF SAID MATERIAL.
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--*
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--
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-- TEST OBJECTIVE:
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--      Check that as part of the finalization of a protected object
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--      each call remaining on an entry queue of the objet is removed
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--      from its queue and Program_Error is raised at the place of
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--      the corresponding entry_call_statement.
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--
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-- TEST DESCRIPTION:
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--      The example in 9.4(20a-20f);6.0 demonstrates how to cause a
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--      protected object to finalize while tasks are still waiting
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--      on its entry queues.  The first part of this test mirrors
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--      that example.  The second part of the test expands upon
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--      the example code to add an object with finalization code
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--      to the protected object.  The finalization code should be
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--      executed after Program_Error is raised in the callers left
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--      on the entry queues.
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--
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--
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-- CHANGE HISTORY:
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--      08 Jan 96   SAIC    Initial Release for 2.1
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--      10 Jul 96   SAIC    Incorporated Reviewer comments to fix race
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--                          condition.
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--
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--!
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with Ada.Finalization;
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package C940014_0 is
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    Verbose : constant Boolean := False;
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    Finalization_Occurred : Boolean := False;
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    type Has_Finalization is new Ada.Finalization.Limited_Controlled with
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          record
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             Placeholder : Integer;
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          end record;
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    procedure Finalize (Object : in out Has_Finalization);
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end C940014_0;
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with Report;
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with ImpDef;
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package body C940014_0 is
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    procedure Finalize (Object : in out Has_Finalization) is
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    begin
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        delay ImpDef.Clear_Ready_Queue;
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        Finalization_Occurred := True;
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        if Verbose then
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            Report.Comment ("in Finalize");
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        end if;
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    end Finalize;
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end C940014_0;
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with Report;
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with ImpDef;
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with Ada.Finalization;
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with C940014_0;
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procedure C940014 is
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   Verbose : constant Boolean := C940014_0.Verbose;
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begin
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   Report.Test ("C940014", "Check that the finalization of a protected" &
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                           " object results in program_error being raised" &
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                           " at the point of the entry call statement for" &
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                           " any tasks remaining on any entry queue");
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   First_Check: declare
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       -- example from ARM 9.4(20a-f);6.0 with minor mods
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       task T is
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           entry E;
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       end T;
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       task body T is
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           protected PO is
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               entry Ee;
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           end PO;
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           protected body PO is
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               entry Ee when Report.Ident_Bool (False) is
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               begin
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                   null;
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               end Ee;
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           end PO;
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       begin
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           accept E do
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                requeue PO.Ee;
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           end E;
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           if Verbose then
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                Report.Comment ("task about to terminate");
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           end if;
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       end T;
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   begin  -- First_Check
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       begin
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           T.E;
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           delay ImpDef.Clear_Ready_Queue;
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           Report.Failed ("exception not raised in First_Check");
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       exception
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           when Program_Error =>
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               if Verbose then
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                   Report.Comment ("ARM Example passed");
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               end if;
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           when others =>
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               Report.Failed ("wrong exception in First_Check");
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       end;
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   end First_Check;
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   Second_Check : declare
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      -- here we want to check that the raising of Program_Error
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      -- occurs before the other finalization actions.
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       task T is
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           entry E;
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       end T;
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       task body T is
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           protected PO is
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               entry Ee;
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           private
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               Component : C940014_0.Has_Finalization;
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           end PO;
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           protected body PO is
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               entry Ee when Report.Ident_Bool (False) is
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               begin
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                   null;
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               end Ee;
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           end PO;
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       begin
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           accept E do
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                requeue PO.Ee;
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           end E;
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           if Verbose then
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                Report.Comment ("task about to terminate");
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           end if;
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       end T;
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   begin  -- Second_Check
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       T.E;
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       delay ImpDef.Clear_Ready_Queue;
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       Report.Failed ("exception not raised in Second_Check");
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   exception
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       when Program_Error =>
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           if C940014_0.Finalization_Occurred then
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               Report.Failed ("wrong order for finalization");
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           elsif Verbose then
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               Report.Comment ("Second_Check passed");
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           end if;
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       when others =>
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           Report.Failed ("Wrong exception in Second_Check");
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   end Second_Check;
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   Report.Result;
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end C940014;

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