-- C974011.A
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-- C974011.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 the sequence of statements of the triggering alternative
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-- Check that the sequence of statements of the triggering alternative
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-- of an asynchronous select statement is not executed if the triggering
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-- of an asynchronous select statement is not executed if the triggering
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-- statement is a task entry call and the entry is not accepted
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-- statement is a task entry call and the entry is not accepted
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-- before the abortable part completes.
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-- before the abortable part completes.
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-- Check that the call queued on the entry is cancelled
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-- Check that the call queued on the entry is cancelled
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--
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--
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-- TEST DESCRIPTION:
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-- TEST DESCRIPTION:
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-- Declare a main procedure containing an asynchronous select with a task
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-- Declare a main procedure containing an asynchronous select with a task
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-- entry call as triggering statement. Force the entry call to be
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-- entry call as triggering statement. Force the entry call to be
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-- queued by having the task call a procedure, prior to the corresponding
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-- queued by having the task call a procedure, prior to the corresponding
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-- accept statement, which simulates (with a delay) a routine waiting
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-- accept statement, which simulates (with a delay) a routine waiting
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-- for user input
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-- for user input
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--
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--
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-- Once the call is known to be queued, complete the abortable part.
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-- Once the call is known to be queued, complete the abortable part.
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-- Check that the rendezvous (and thus the trigger) does not complete.
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-- Check that the rendezvous (and thus the trigger) does not complete.
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-- Then clear the barrier and check that the entry has been cancelled
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-- Then clear the barrier and check that the entry has been cancelled
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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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-- 28 Nov 95 SAIC Eliminated shared global variable for ACVC 2.0.1
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-- 28 Nov 95 SAIC Eliminated shared global variable for ACVC 2.0.1
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--
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--
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--!
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--!
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with ImpDef;
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with ImpDef;
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--
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--
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package C974011_0 is -- Automated teller machine abstraction.
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package C974011_0 is -- Automated teller machine abstraction.
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type Key_Enum is (None, Cancel, Deposit, Withdraw);
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type Key_Enum is (None, Cancel, Deposit, Withdraw);
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protected Key_PO is
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protected Key_PO is
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procedure Set (K : Key_Enum);
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procedure Set (K : Key_Enum);
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function Value return Key_Enum;
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function Value return Key_Enum;
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private
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private
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Current : Key_Enum := None;
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Current : Key_Enum := None;
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end Key_PO;
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end Key_PO;
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-- Flags for testing purposes
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-- Flags for testing purposes
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TC_Abortable_Part_Completed : Boolean := False;
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TC_Abortable_Part_Completed : Boolean := False;
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TC_Rendezvous_Entered : Boolean := False;
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TC_Rendezvous_Entered : Boolean := False;
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TC_Delay_Time : constant duration := ImpDef.Switch_To_New_Task;
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TC_Delay_Time : constant duration := ImpDef.Switch_To_New_Task;
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Count : Integer := 1234; -- Global to defeat optimization.
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Count : Integer := 1234; -- Global to defeat optimization.
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type Card_Number_Type is private;
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type Card_Number_Type is private;
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type Card_PIN_Type is private;
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type Card_PIN_Type is private;
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type ATM_Card_Type is private;
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type ATM_Card_Type is private;
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Transaction_Canceled : exception;
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Transaction_Canceled : exception;
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task type ATM_Keyboard_Task is
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task type ATM_Keyboard_Task is
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entry Cancel_Pressed;
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entry Cancel_Pressed;
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end ATM_Keyboard_Task;
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end ATM_Keyboard_Task;
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procedure Read_Card (Card : in out ATM_Card_Type);
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procedure Read_Card (Card : in out ATM_Card_Type);
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procedure Validate_Card (Card : in ATM_Card_Type);
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procedure Validate_Card (Card : in ATM_Card_Type);
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procedure Perform_Transaction (Card : in ATM_Card_Type);
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procedure Perform_Transaction (Card : in ATM_Card_Type);
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private
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private
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type Card_Number_Type is range 1 .. 9999;
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type Card_Number_Type is range 1 .. 9999;
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type Card_PIN_Type is range 100 .. 999;
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type Card_PIN_Type is range 100 .. 999;
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type ATM_Card_Type is record
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type ATM_Card_Type is record
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Number : Card_Number_Type;
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Number : Card_Number_Type;
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PIN : Card_PIN_Type;
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PIN : Card_PIN_Type;
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end record;
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end record;
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end C974011_0;
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end C974011_0;
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--==================================================================--
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--==================================================================--
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with Report;
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with Report;
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package body C974011_0 is
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package body C974011_0 is
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protected body Key_PO is
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protected body Key_PO is
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procedure Set (K : Key_Enum) is
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procedure Set (K : Key_Enum) is
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begin
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begin
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Current := K;
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Current := K;
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end Set;
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end Set;
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function Value return Key_Enum is
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function Value return Key_Enum is
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begin
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begin
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return Current;
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return Current;
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end Value;
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end Value;
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end Key_PO;
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end Key_PO;
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procedure Listen_For_Input (Key : out Key_Enum) is
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procedure Listen_For_Input (Key : out Key_Enum) is
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begin
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begin
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-- Model the situation where the user does not press cancel thus
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-- Model the situation where the user does not press cancel thus
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-- allowing validation to complete
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-- allowing validation to complete
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delay TC_Delay_Time; -- Long enough to force queuing on
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delay TC_Delay_Time; -- Long enough to force queuing on
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-- Keyboard.Cancel_Pressed.
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-- Keyboard.Cancel_Pressed.
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Key := Key_PO.Value;
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Key := Key_PO.Value;
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end Listen_For_Input;
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end Listen_For_Input;
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-- One of these gets created as "Keyboard" for each transaction
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-- One of these gets created as "Keyboard" for each transaction
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--
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--
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task body ATM_Keyboard_Task is
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task body ATM_Keyboard_Task is
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Key_Pressed : Key_Enum;
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Key_Pressed : Key_Enum;
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begin
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begin
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loop
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loop
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-- Force entry calls
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-- Force entry calls
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Listen_For_Input (Key_Pressed); -- to be queued,
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Listen_For_Input (Key_Pressed); -- to be queued,
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select
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select
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when (Key_Pressed = Cancel) =>
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when (Key_Pressed = Cancel) =>
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accept Cancel_Pressed do
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accept Cancel_Pressed do
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TC_Rendezvous_Entered := True;
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TC_Rendezvous_Entered := True;
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end Cancel_Pressed;
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end Cancel_Pressed;
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-- User has cancelled the transaction so we exit the
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-- User has cancelled the transaction so we exit the
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-- loop and allow the task to terminate
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-- loop and allow the task to terminate
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exit;
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exit;
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else
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else
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delay ImpDef.Switch_To_New_Task;
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delay ImpDef.Switch_To_New_Task;
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end select;
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end select;
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end loop;
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end loop;
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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 ATM_Keyboard_Task");
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Report.Failed ("Unexpected Exception in ATM_Keyboard_Task");
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end ATM_Keyboard_Task;
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end ATM_Keyboard_Task;
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procedure Read_Card (Card : in out ATM_Card_Type) is
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procedure Read_Card (Card : in out ATM_Card_Type) is
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begin
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begin
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Card.Number := 9999;
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Card.Number := 9999;
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Card.PIN := 111;
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Card.PIN := 111;
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end Read_Card;
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end Read_Card;
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procedure Validate_Card (Card : in ATM_Card_Type) is
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procedure Validate_Card (Card : in ATM_Card_Type) is
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begin
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begin
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Count := (Count + 1) mod Integer (Card.PIN);
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Count := (Count + 1) mod Integer (Card.PIN);
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-- Simulate a validation activity which is longer than the time
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-- Simulate a validation activity which is longer than the time
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-- taken in Listen_For_Input but not inordinately so.
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-- taken in Listen_For_Input but not inordinately so.
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delay TC_Delay_Time * 2;
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delay TC_Delay_Time * 2;
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end Validate_Card;
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end Validate_Card;
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procedure Perform_Transaction (Card : in ATM_Card_Type) is
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procedure Perform_Transaction (Card : in ATM_Card_Type) is
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begin
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begin
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if TC_Rendezvous_Entered then
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if TC_Rendezvous_Entered then
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Report.Failed ("Triggering statement completed");
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Report.Failed ("Triggering statement completed");
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end if;
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end if;
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if Count = 1234 then
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if Count = 1234 then
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-- Initial value is unchanged
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-- Initial value is unchanged
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Report.Failed ("Abortable part did not execute");
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Report.Failed ("Abortable part did not execute");
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end if;
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end if;
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if not TC_Abortable_Part_Completed then
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if not TC_Abortable_Part_Completed then
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Report.Failed ("Abortable part did not complete");
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Report.Failed ("Abortable part did not complete");
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end if;
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end if;
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end Perform_Transaction;
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end Perform_Transaction;
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end C974011_0;
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end C974011_0;
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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 C974011_0; -- Automated teller machine abstraction.
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with C974011_0; -- Automated teller machine abstraction.
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use C974011_0;
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use C974011_0;
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procedure C974011 is
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procedure C974011 is
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Card_Data : ATM_Card_Type;
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Card_Data : ATM_Card_Type;
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begin -- Main program.
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begin -- Main program.
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Report.Test ("C974011", "Asynchronous Select: Trigger is queued on a " &
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Report.Test ("C974011", "Asynchronous Select: Trigger is queued on a " &
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"task entry and the abortable part " &
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"task entry and the abortable part " &
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"completes first");
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"completes first");
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Read_Card (Card_Data);
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Read_Card (Card_Data);
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declare
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declare
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-- Create the task for this transaction
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-- Create the task for this transaction
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Keyboard : C974011_0.ATM_Keyboard_Task;
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Keyboard : C974011_0.ATM_Keyboard_Task;
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begin
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begin
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-- --
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-- --
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-- Asynchronous select is tested here --
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-- Asynchronous select is tested here --
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-- --
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-- --
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select
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select
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Keyboard.Cancel_Pressed; -- Entry call is initially queued, so
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Keyboard.Cancel_Pressed; -- Entry call is initially queued, so
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-- abortable part starts.
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-- abortable part starts.
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raise Transaction_Canceled; -- This would be executed if we
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raise Transaction_Canceled; -- This would be executed if we
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-- completed the rendezvous
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-- completed the rendezvous
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then abort
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then abort
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Validate_Card (Card_Data);
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Validate_Card (Card_Data);
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TC_Abortable_Part_Completed := true;
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TC_Abortable_Part_Completed := true;
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end select;
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end select;
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Perform_Transaction (Card_Data);
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Perform_Transaction (Card_Data);
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-- Now clear the entry barrier to allow the rendezvous to complete
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-- Now clear the entry barrier to allow the rendezvous to complete
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-- if the triggering call has not been cancelled
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-- if the triggering call has not been cancelled
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Key_PO.Set (Cancel);
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Key_PO.Set (Cancel);
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--
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--
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delay TC_Delay_Time; -- to allow it all to take place
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delay TC_Delay_Time; -- to allow it all to take place
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if TC_Rendezvous_Entered then
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if TC_Rendezvous_Entered then
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Report.Failed ("Triggering Call was not cancelled");
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Report.Failed ("Triggering Call was not cancelled");
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end if;
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end if;
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abort Keyboard; -- clean up. (Note: the task will only exit the
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abort Keyboard; -- clean up. (Note: the task will only exit the
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-- loop and terminate if the call hanging on the
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-- loop and terminate if the call hanging on the
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-- entry is executed.)
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-- entry is executed.)
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exception
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exception
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when Transaction_Canceled =>
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when Transaction_Canceled =>
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Report.Failed ("Triggering alternative sequence of statements " &
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Report.Failed ("Triggering alternative sequence of statements " &
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"executed");
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"executed");
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when Others =>
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when Others =>
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Report.Failed ("Unexpected exception in the Main");
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Report.Failed ("Unexpected exception in the Main");
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end;
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end;
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Report.Result;
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Report.Result;
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end C974011;
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end C974011;
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