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|
-- C954018.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 if a task is aborted while a requeued call is queued
-- on one of its entries the original caller receives Tasking_Error
-- and the requeuing task is unaffected.
-- This test uses: Requeue to an entry in a different task
-- Parameterless call
-- Requeue with abort
--
-- TEST DESCRIPTION:
-- The Intermediate task requeues a call from the Original_Caller to the
-- Receiver on an entry with a guard that is always false. While the
-- Original_Caller is still queued the Receiver is aborted.
-- Check that Tasking_Error is raised in the Original_Caller, that the
-- Receiver does, indeed, get aborted and the Intermediate task
-- is undisturbed.
-- There are several delay loops in this test any one of which could
-- cause it to hang and thus indicate failure.
--
--
-- CHANGE HISTORY:
-- 06 Dec 94 SAIC ACVC 2.0
--
--!
with Report;
with ImpDef;
procedure C954018 is
-- Protected object to control the shared test variables
--
protected TC_State is
function On_Entry_Queue return Boolean;
procedure Set_On_Entry_Queue;
function Original_Caller_Complete return Boolean;
procedure Set_Original_Caller_Complete;
function Intermediate_Complete return Boolean;
procedure Set_Intermediate_Complete;
private
On_Entry_Queue_Flag : Boolean := false;
Original_Caller_Complete_Flag : Boolean := false;
Intermediate_Complete_Flag : Boolean := false;
end TC_State;
--
--
protected body TC_State is
function On_Entry_Queue return Boolean is
begin
return On_Entry_Queue_Flag;
end On_Entry_Queue;
procedure Set_On_Entry_Queue is
begin
On_Entry_Queue_Flag := true;
end Set_On_Entry_Queue;
function Original_Caller_Complete return Boolean is
begin
return Original_Caller_Complete_Flag;
end Original_Caller_Complete;
procedure Set_Original_Caller_Complete is
begin
Original_Caller_Complete_Flag := true;
end Set_Original_Caller_Complete;
function Intermediate_Complete return Boolean is
begin
return Intermediate_Complete_Flag;
end Intermediate_Complete;
procedure Set_Intermediate_Complete is
begin
Intermediate_Complete_Flag := true;
end Set_Intermediate_Complete;
end TC_State;
--================================
task Original_Caller is
entry Start;
end Original_Caller;
task Intermediate is
entry Input;
entry TC_Abort_Process_Complete;
end Intermediate;
task Receiver is
entry Input;
end Receiver;
task body Original_Caller is
begin
accept Start; -- wait for the trigger from Main
Intermediate.Input;
Report.Failed ("Tasking_Error not raised in Original_Caller task");
exception
when tasking_error =>
TC_State.Set_Original_Caller_Complete; -- expected behavior
when others =>
Report.Failed ("Unexpected Exception in Original_Caller task");
end Original_Caller;
task body Intermediate is
begin
accept Input do
-- Within this accept call another task
TC_State.Set_On_Entry_Queue;
requeue Receiver.Input with abort;
Report.Failed ("Requeue did not complete the Accept");
end Input;
-- Wait for Main to ensure that the abort housekeeping is finished
accept TC_Abort_Process_Complete;
TC_State.Set_Intermediate_Complete;
exception
when others =>
Report.Failed ("Unexpected exception in Intermediate task");
end Intermediate;
task body Receiver is
begin
loop
select
-- A call to Input will be placed on the queue and never serviced
when Report.Equal (1,2) => -- Always false
accept Input do
Report.Failed ("Receiver in Accept");
end Input;
or
delay ImpDef.Minimum_Task_Switch;
end select;
end loop;
exception
when others =>
Report.Failed ("Unexpected Exception in Receiver Task");
end Receiver;
begin
Report.Test ("C954018", "Requeue: abort the called task" &
" while Caller is still queued");
Original_Caller.Start;
-- This is the main part of the test
-- Wait for the requeue
while not TC_State.On_Entry_Queue loop
delay ImpDef.Minimum_Task_Switch;
end loop;
-- Delay long enough to ensure that the requeue has "arrived" on
-- the entry queue. Note: TC_State.Set_On_Entry_Queue is called the
-- statement before the requeue
--
delay ImpDef.Switch_To_New_Task;
-- At this point the Receiver is guaranteed to have the requeue on
-- the entry queue
--
abort Receiver;
-- Wait for the whole of the abort process to complete
while not ( Original_Caller'terminated and Receiver'terminated ) loop
delay ImpDef.Minimum_Task_Switch;
end loop;
-- Inform the Intermediate task that the process is complete to allow
-- it to continue to completion itself
Intermediate.TC_Abort_Process_Complete;
-- Wait for everything to settle before reporting the result
while not ( Intermediate'terminated ) loop
delay ImpDef.Minimum_Task_Switch;
end loop;
if not ( TC_State.Original_Caller_Complete and
TC_State.Intermediate_Complete ) then
Report.Failed ("Proper paths not traversed");
end if;
Report.Result;
end C954018;
|
