-- C951001.A
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-- C951001.A
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--
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--
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-- Grant of Unlimited Rights
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-- Grant of Unlimited Rights
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--
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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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-- 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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-- 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 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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-- 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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-- 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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-- 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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-- 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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-- 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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-- any manner and for any purpose whatsoever, and to have or permit others
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-- to do so.
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-- to do so.
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--
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--
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-- DISCLAIMER
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-- DISCLAIMER
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--
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--
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-- ALL MATERIALS OR INFORMATION HEREIN RELEASED, MADE AVAILABLE OR
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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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-- 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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-- 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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-- 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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-- OR DISCLOSED, OR THE OWNERSHIP, MERCHANTABILITY, OR FITNESS FOR A
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-- PARTICULAR PURPOSE OF SAID MATERIAL.
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-- PARTICULAR PURPOSE OF SAID MATERIAL.
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--*
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--*
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--
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--
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-- OBJECTIVE:
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-- OBJECTIVE:
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-- Check that two procedures in a protected object will not be
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-- Check that two procedures in a protected object will not be
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-- executed concurrently.
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-- executed concurrently.
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--
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--
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-- TEST DESCRIPTION:
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-- TEST DESCRIPTION:
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-- A very simple example of two tasks calling two procedures in the same
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-- A very simple example of two tasks calling two procedures in the same
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-- protected object is used. Test control code has been added to the
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-- protected object is used. Test control code has been added to the
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-- procedures such that, whichever gets called first executes a lengthy
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-- procedures such that, whichever gets called first executes a lengthy
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-- calculation giving sufficient time (on a multiprocessor or a
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-- calculation giving sufficient time (on a multiprocessor or a
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-- time-slicing machine) for the other task to get control and call the
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-- time-slicing machine) for the other task to get control and call the
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-- other procedure. The control code verifies that entry to the second
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-- other procedure. The control code verifies that entry to the second
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-- routine is postponed until the first is complete.
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-- routine is postponed until the first is complete.
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--
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--
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--
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--
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-- CHANGE HISTORY:
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-- CHANGE HISTORY:
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-- 06 Dec 94 SAIC ACVC 2.0
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-- 06 Dec 94 SAIC ACVC 2.0
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--
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--
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--!
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--!
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with Report;
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with Report;
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with ImpDef;
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with ImpDef;
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procedure C951001 is
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procedure C951001 is
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protected Ramp_31 is
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protected Ramp_31 is
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procedure Add_Meter_Queue;
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procedure Add_Meter_Queue;
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procedure Subtract_Meter_Queue;
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procedure Subtract_Meter_Queue;
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function TC_Failed return Boolean;
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function TC_Failed return Boolean;
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private
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private
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Ramp_Count : integer range 0..20 := 4; -- Start test with some
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Ramp_Count : integer range 0..20 := 4; -- Start test with some
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-- vehicles on the ramp
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-- vehicles on the ramp
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TC_Add_Started : Boolean := false;
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TC_Add_Started : Boolean := false;
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TC_Subtract_Started : Boolean := false;
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TC_Subtract_Started : Boolean := false;
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TC_Add_Finished : Boolean := false;
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TC_Add_Finished : Boolean := false;
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TC_Subtract_Finished : Boolean := false;
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TC_Subtract_Finished : Boolean := false;
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TC_Concurrent_Running: Boolean := false;
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TC_Concurrent_Running: Boolean := false;
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end Ramp_31;
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end Ramp_31;
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protected body Ramp_31 is
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protected body Ramp_31 is
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function TC_Failed return Boolean is
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function TC_Failed return Boolean is
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begin
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begin
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-- this indicator will have been set true if any instance
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-- this indicator will have been set true if any instance
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-- of concurrent running has been proved
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-- of concurrent running has been proved
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return TC_Concurrent_Running;
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return TC_Concurrent_Running;
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end TC_Failed;
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end TC_Failed;
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procedure Add_Meter_Queue is
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procedure Add_Meter_Queue is
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begin
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begin
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--==================================================
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--==================================================
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-- This section is all Test_Control code
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-- This section is all Test_Control code
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TC_Add_Started := true;
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TC_Add_Started := true;
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if TC_Subtract_Started then
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if TC_Subtract_Started then
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if not TC_Subtract_Finished then
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if not TC_Subtract_Finished then
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TC_Concurrent_Running := true;
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TC_Concurrent_Running := true;
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end if;
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end if;
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else
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else
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-- Subtract has not started.
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-- Subtract has not started.
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-- Execute a lengthy routine to give it a chance to do so
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-- Execute a lengthy routine to give it a chance to do so
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ImpDef.Exceed_Time_Slice;
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ImpDef.Exceed_Time_Slice;
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if TC_Subtract_Started then
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if TC_Subtract_Started then
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-- Subtract was able to start so we have concurrent
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-- Subtract was able to start so we have concurrent
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-- running and the test has failed
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-- running and the test has failed
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TC_Concurrent_Running := true;
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TC_Concurrent_Running := true;
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end if;
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end if;
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end if;
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end if;
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TC_Add_Finished := true;
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TC_Add_Finished := true;
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--==================================================
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--==================================================
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Ramp_Count := Ramp_Count + 1;
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Ramp_Count := Ramp_Count + 1;
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end Add_Meter_Queue;
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end Add_Meter_Queue;
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procedure Subtract_Meter_Queue is
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procedure Subtract_Meter_Queue is
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begin
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begin
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--==================================================
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--==================================================
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-- This section is all Test_Control code
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-- This section is all Test_Control code
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TC_Subtract_Started := true;
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TC_Subtract_Started := true;
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if TC_Add_Started then
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if TC_Add_Started then
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if not TC_Add_Finished then
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if not TC_Add_Finished then
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-- We already have concurrent running
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-- We already have concurrent running
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TC_Concurrent_Running := true;
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TC_Concurrent_Running := true;
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end if;
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end if;
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else
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else
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-- Add has not started.
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-- Add has not started.
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-- Execute a lengthy routine to give it a chance to do so
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-- Execute a lengthy routine to give it a chance to do so
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ImpDef.Exceed_Time_Slice;
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ImpDef.Exceed_Time_Slice;
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if TC_Add_Started then
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if TC_Add_Started then
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-- Add was able to start so we have concurrent
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-- Add was able to start so we have concurrent
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-- running and the test has failed
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-- running and the test has failed
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TC_Concurrent_Running := true;
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TC_Concurrent_Running := true;
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end if;
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end if;
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end if;
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end if;
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TC_Subtract_Finished := true;
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TC_Subtract_Finished := true;
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--==================================================
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--==================================================
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Ramp_Count := Ramp_Count - 1;
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Ramp_Count := Ramp_Count - 1;
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end Subtract_Meter_Queue;
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end Subtract_Meter_Queue;
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end Ramp_31;
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end Ramp_31;
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begin
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begin
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Report.Test ("C951001", "Check that two procedures in a protected" &
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Report.Test ("C951001", "Check that two procedures in a protected" &
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" object will not be executed concurrently");
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" object will not be executed concurrently");
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declare -- encapsulate the test
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declare -- encapsulate the test
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task Vehicle_1;
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task Vehicle_1;
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task Vehicle_2;
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task Vehicle_2;
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-- Vehicle_1 and Vehicle_2 are simulations of Instances of the task
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-- Vehicle_1 and Vehicle_2 are simulations of Instances of the task
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-- of type Vehicle in different stages of execution
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-- of type Vehicle in different stages of execution
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task body Vehicle_1 is
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task body Vehicle_1 is
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begin
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begin
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null; -- ::::: stub. preparation code
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null; -- ::::: stub. preparation code
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-- Add to the count of vehicles on the queue
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-- Add to the count of vehicles on the queue
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Ramp_31.Add_Meter_Queue;
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Ramp_31.Add_Meter_Queue;
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null; -- ::::: stub: wait at the meter then pass to first sensor
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null; -- ::::: stub: wait at the meter then pass to first sensor
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-- Reduce the count of vehicles on the queue
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-- Reduce the count of vehicles on the queue
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null; -- ::::: stub: Ramp_31.Subtract_Meter_Queue
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null; -- ::::: stub: Ramp_31.Subtract_Meter_Queue
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exception
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exception
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when others =>
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when others =>
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Report.Failed ("Unexpected Exception in Vehicle_1 task");
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Report.Failed ("Unexpected Exception in Vehicle_1 task");
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end Vehicle_1;
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end Vehicle_1;
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task body Vehicle_2 is
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task body Vehicle_2 is
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begin
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begin
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null; -- ::::: stub. preparation code
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null; -- ::::: stub. preparation code
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-- Add to the count of vehicles on the queue
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-- Add to the count of vehicles on the queue
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null; -- ::::: stub Ramp_31.Add_Meter_Queue;
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null; -- ::::: stub Ramp_31.Add_Meter_Queue;
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null; -- ::::: stub: wait at the meter then pass to first sensor
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null; -- ::::: stub: wait at the meter then pass to first sensor
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-- Reduce the count of vehicles on the queue
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-- Reduce the count of vehicles on the queue
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Ramp_31.Subtract_Meter_Queue;
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Ramp_31.Subtract_Meter_Queue;
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exception
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exception
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when others =>
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when others =>
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Report.Failed ("Unexpected Exception in Vehicle_2 task");
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Report.Failed ("Unexpected Exception in Vehicle_2 task");
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end Vehicle_2;
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end Vehicle_2;
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begin
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begin
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null;
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null;
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end; -- encapsulation
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end; -- encapsulation
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if Ramp_31.TC_Failed then
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if Ramp_31.TC_Failed then
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Report.Failed ("Concurrent Running detected");
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Report.Failed ("Concurrent Running detected");
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end if;
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end if;
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Report.Result;
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Report.Result;
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end C951001;
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end C951001;
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