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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;
|
