c940014.a

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-- C940014.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 that as part of the finalization of a protected object
--      each call remaining on an entry queue of the objet is removed
--      from its queue and Program_Error is raised at the place of
--      the corresponding entry_call_statement.
--
-- TEST DESCRIPTION:
--      The example in 9.4(20a-20f);6.0 demonstrates how to cause a
--      protected object to finalize while tasks are still waiting
--      on its entry queues.  The first part of this test mirrors
--      that example.  The second part of the test expands upon
--      the example code to add an object with finalization code
--      to the protected object.  The finalization code should be
--      executed after Program_Error is raised in the callers left
--      on the entry queues.
--
--
-- CHANGE HISTORY:
--      08 Jan 96   SAIC    Initial Release for 2.1
--      10 Jul 96   SAIC    Incorporated Reviewer comments to fix race 
--                          condition.
--
--!


with Ada.Finalization;
package C940014_0 is
    Verbose : constant Boolean := False;
    Finalization_Occurred : Boolean := False;

    type Has_Finalization is new Ada.Finalization.Limited_Controlled with
          record
             Placeholder : Integer;
          end record;
    procedure Finalize (Object : in out Has_Finalization);
end C940014_0;


with Report;
with ImpDef;
package body C940014_0 is
    procedure Finalize (Object : in out Has_Finalization) is
    begin
	delay ImpDef.Clear_Ready_Queue;
        Finalization_Occurred := True;
        if Verbose then
            Report.Comment ("in Finalize");
        end if;
    end Finalize;
end C940014_0;



with Report;
with ImpDef;
with Ada.Finalization;
with C940014_0;

procedure C940014 is
   Verbose : constant Boolean := C940014_0.Verbose;

begin
 
   Report.Test ("C940014", "Check that the finalization of a protected" &
                           " object results in program_error being raised" &
                           " at the point of the entry call statement for" &
                           " any tasks remaining on any entry queue");

   First_Check: declare
       -- example from ARM 9.4(20a-f);6.0 with minor mods
       task T is
           entry E;
       end T;
       task body T is
           protected PO is
               entry Ee;
           end PO;
           protected body PO is
               entry Ee when Report.Ident_Bool (False) is
               begin
                   null;
               end Ee;
           end PO;
       begin
           accept E do
                requeue PO.Ee;
           end E;
           if Verbose then
                Report.Comment ("task about to terminate");
           end if;
       end T;
   begin  -- First_Check
       begin
           T.E;
           delay ImpDef.Clear_Ready_Queue;
           Report.Failed ("exception not raised in First_Check");
       exception
           when Program_Error =>
               if Verbose then
                   Report.Comment ("ARM Example passed");
               end if;
           when others =>
               Report.Failed ("wrong exception in First_Check");
       end;
   end First_Check;
 

   Second_Check : declare
      -- here we want to check that the raising of Program_Error
      -- occurs before the other finalization actions.
       task T is
           entry E;
       end T;
       task body T is
           protected PO is
               entry Ee;
           private
               Component : C940014_0.Has_Finalization;
           end PO;
           protected body PO is
               entry Ee when Report.Ident_Bool (False) is
               begin
                   null;
               end Ee;
           end PO;
       begin
           accept E do
                requeue PO.Ee;
           end E;
           if Verbose then
                Report.Comment ("task about to terminate");
           end if;
       end T;
   begin  -- Second_Check
       T.E;
       delay ImpDef.Clear_Ready_Queue;
       Report.Failed ("exception not raised in Second_Check");
   exception
       when Program_Error =>
           if C940014_0.Finalization_Occurred then
               Report.Failed ("wrong order for finalization");
           elsif Verbose then
               Report.Comment ("Second_Check passed");
           end if;
       when others =>
           Report.Failed ("Wrong exception in Second_Check");
   end Second_Check;


   Report.Result;
 
end C940014;