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-- C930001.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.

--*

--

-- TEST OBJECTIVE:

--      Check when a dependent task and its master both

--      terminate as a result of a terminate alternative that

--      finalization is performed and that the finalization is

--      performed in the proper order.

--

-- TEST DESCRIPTION:

--      A controlled type with finalization is used to determine

--      the order in which finalization occurs.  The finalization

--      procedure records the identity of the object being

--      finalized.

--      Two tasks, one nested inside the other, both contain

--      objects of the above finalization type.  These tasks

--      cooperatively terminate so the termination and finalization

--      order can be noted.

--

--

-- CHANGE HISTORY:

--      08 Jan 96   SAIC    ACVC 2.1

--      09 May 96   SAIC    Addressed Reviewer comments.

--

--!

with Ada.Finalization;

package C930001_0 is

    Verbose : constant Boolean := False;

    type Ids is range 0..10;

    Finalization_Order : array (Ids) of Ids := (Ids => 0);

    Finalization_Cnt : Ids := 0;

    protected Note is

       -- serializes concurrent access to Finalization_* above

       procedure Done (Id : Ids);

    end Note;

    -- Objects of the following type are used to note the order in

    -- which finalization occurs.

    type Has_Finalization is new Ada.Finalization.Limited_Controlled with

          record

             Id : Ids;

          end record;

    procedure Finalize (Object : in out Has_Finalization);

end C930001_0;

with Report;

package body C930001_0 is

    protected body Note is

        procedure Done (Id : Ids) is

        begin

            Finalization_Cnt := Finalization_Cnt + 1;

            Finalization_Order (Finalization_Cnt) := Id;

        end Done;

    end Note;

    procedure Finalize (Object : in out Has_Finalization) is

    begin

        Note.Done (Object.Id);

        if Verbose then

            Report.Comment ("in Finalize for" & Ids'Image (Object.Id));

        end if;

    end Finalize;

end C930001_0;

with Report;

with ImpDef;

with C930001_0;   use C930001_0;

procedure C930001 is

begin

    Report.Test ("C930001", "Check that dependent tasks are terminated" &

                            " before the remaining finalization");

    declare

        task Level_1;

        task body Level_1 is

            V1a : C930001_0.Has_Finalization;        -------> 4

            task Level_2 is

                entry Not_Taken;

            end Level_2;

            task body Level_2 is

                V2 : C930001_0.Has_Finalization;     -------> 2

            begin

                V2.Id := 2;

                C930001_0.Note.Done (1);             -------> 1

                select

                    accept Not_Taken;

                or

                    terminate;

                    -- cooperative termination at this point of

                    -- both tasks

                end select;

            end Level_2;

            -- 7.6.1(11) requires that V1b be finalized before V1a

            V1b : C930001_0.Has_Finalization;        -------> 3

        begin

            V1a.Id := 4;

            V1b.Id := 3;

        end Level_1;

    begin  -- declare

        while not Level_1'Terminated loop

             delay ImpDef.Switch_To_New_Task;

        end loop;

        C930001_0.Note.Done (5);                     -------> 5

        -- now check the order

        for I in Ids range 1..5 loop

            if Verbose then

                Report.Comment (Ids'Image (I) &

                       Ids'Image (Finalization_Order (I)));

            end if;

            if Finalization_Order (I) /= I then

                Report.Failed ("Finalization occurred out of order" &

                   " expected:" &

                   Ids'Image (I) &

                   " actual:" &

                   Ids'Image (Finalization_Order (I)));

            end if;

        end loop;

    end;

    Report.Result;

end C930001;