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diff --git a/gcc-4.9/gcc/testsuite/ada/acats/tests/c9/c974005.a b/gcc-4.9/gcc/testsuite/ada/acats/tests/c9/c974005.a new file mode 100644 index 000000000..196a8edc0 --- /dev/null +++ b/gcc-4.9/gcc/testsuite/ada/acats/tests/c9/c974005.a @@ -0,0 +1,259 @@ +-- C974005.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 Tasking_Error is raised at the point of an entry call +-- which is the triggering statement of an asynchronous select, if +-- the entry call is queued, but the task containing the entry completes +-- before it can be accepted or canceled. +-- +-- Check that the abortable part is aborted if it does not complete +-- before the triggering statement completes. +-- +-- Check that the sequence of statements of the triggering alternative +-- is not executed. +-- +-- TEST DESCRIPTION: +-- Declare a main procedure containing an asynchronous select with a task +-- entry call as triggering statement. Force the entry call to be +-- queued by having the task call a procedure, prior to the corresponding +-- accept statement, which simulates a routine waiting for user input +-- (with a delay). +-- +-- Simulate a time-consuming routine in the abortable part by calling a +-- procedure containing an infinite loop. Meanwhile, simulate input by +-- the user (the delay expires) which is NOT the input expected by the +-- guard on the accept statement. The entry remains closed, and the +-- task completes its execution. Since the entry was not accepted before +-- its task completed, Tasking_Error is raised at the point of the entry +-- call. +-- +-- +-- CHANGE HISTORY: +-- 06 Dec 94 SAIC ACVC 2.0 +-- +--! + +package C974005_0 is -- Automated teller machine abstraction. + + + -- Flags for testing purposes: + + Count : Integer := 1234; + + type Key_Enum is (None, Cancel, Deposit, Withdraw); + + type Card_Number_Type is private; + type Card_PIN_Type is private; + type ATM_Card_Type is private; + + + Transaction_Canceled : exception; + + + task type ATM_Keyboard_Task is + entry Cancel_Pressed; + end ATM_Keyboard_Task; + + + procedure Read_Card (Card : in out ATM_Card_Type); + + procedure Validate_Card (Card : in ATM_Card_Type); + + procedure Perform_Transaction (Card : in ATM_Card_Type); + +private + + type Card_Number_Type is range 1 .. 9999; + type Card_PIN_Type is range 100 .. 999; + + type ATM_Card_Type is record + Number : Card_Number_Type; + PIN : Card_PIN_Type; + end record; + +end C974005_0; + + + --==================================================================-- + + +with Report; +with ImpDef; + +package body C974005_0 is + + + procedure Listen_For_Input (Key : out Key_Enum) is + begin + -- Simulate the situation where a user waits a bit for the card to + -- be validated, then presses a transaction key (NOT Cancel). + + -- Delay long enough to force queuing of Keyboard.Cancel_Pressed. + delay ImpDef.Clear_Ready_Queue; + + if Report.Equal (3, 3) then -- Always true. + Key := Deposit; -- Cancel is NOT pressed. + end if; + end Listen_For_Input; + + + task body ATM_Keyboard_Task is + Key_Pressed : Key_Enum := None; + begin + + -- Note: no loop. If the user does not press Cancel, the task completes. + -- In this model of the keyboard monitor, the user only gets one chance + -- to cancel the card validation. + -- Force entry + Listen_For_Input (Key_Pressed); -- calls to be + -- queued, but do + -- NOT set guard + -- to true. + select + when (Key_Pressed = Cancel) => -- Guard is false, + accept Cancel_Pressed do -- so entry call + Report.Failed ("Accept statement executed"); -- remains queued. + end Cancel_Pressed; + else -- Else alternative + Key_Pressed := None; -- executed, then + end select; -- task ends. + exception + when others => + Report.Failed ("Unexpected exception in ATM_Keyboard_Task"); + end ATM_Keyboard_Task; + + + + procedure Read_Card (Card : in out ATM_Card_Type) is + begin + Card.Number := 9999; + Card.PIN := 111; + end Read_Card; + + + procedure Validate_Card (Card : in ATM_Card_Type) is + begin + -- Simulate an exceedingly long validation activity. + loop -- Infinite loop. + Count := (Count + 1) mod Integer (Card.PIN); + + -- Synch Point to allow transfer of control to Keyboard task + -- during this simulation + delay ImpDef.Minimum_Task_Switch; + + exit when not Report.Equal (Count, Count); -- Always false. + end loop; + end Validate_Card; + + + procedure Perform_Transaction (Card : in ATM_Card_Type) is + begin + Report.Failed ("Exception not re-raised immediately following " & + "asynchronous select"); + if Count = 1234 then + -- Additional analysis added to aid developers + Report.Failed ("Abortable part did not execute"); + end if; + end Perform_Transaction; + + +end C974005_0; + + + --==================================================================-- + + +with Report; + +with C974005_0; -- Automated teller machine abstraction. +use C974005_0; + +procedure C974005 is + + Card_Data : ATM_Card_Type; + +begin -- Main program. + + Report.Test ("C974005", "ATC: trigger is queued but task terminates" & + " before call is serviced"); + + Read_Card (Card_Data); + + begin + + declare + Keyboard : C974005_0.ATM_Keyboard_Task; + begin + + -- -- + -- Asynchronous select is tested here -- + -- -- + + select + Keyboard.Cancel_Pressed; -- Entry call initially queued, so + -- abortable part starts. + + -- Tasking_Error raised here when + -- Keyboard completes before entry + -- call can be accepted, and before + -- abortable part completes. + + raise Transaction_Canceled; -- Should not be executed. + then abort + Validate_Card (Card_Data); -- Keyboard task completes before + -- Keyboard.Cancel_Pressed is + -- accepted, and before this call + -- finishes. Tasking_Error is raised + -- at the point of the entry call, + -- and this call is aborted. + -- Check that the whole of the abortable part is aborted, not just + -- the statement in the abortable part that was executing at + -- the time + Report.Failed ("Abortable part not aborted"); + end select; + Perform_Transaction (Card_Data); -- Should not be reached. + exception + when Transaction_Canceled => + Report.Failed ("Triggering alternative sequence of statements " & + "executed"); + when Tasking_Error => + if Count = 1234 then + Report.Failed ("Abortable part did not execute"); + end if; + when others => + Report.Failed ("Wrong exception raised"); + end; + + exception + when Tasking_Error => + Report.Failed ("Correct exception raised at wrong level"); + when others => + Report.Failed ("Wrong exception raised at wrong level"); + end; + + Report.Result; + +end C974005; |