From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001 From: upstream source tree Date: Sun, 15 Mar 2015 20:14:05 -0400 Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; verified gcc-4.6.4.tar.bz2.sig; imported gcc-4.6.4 source tree from verified upstream tarball. downloading a git-generated archive based on the 'upstream' tag should provide you with a source tree that is binary identical to the one extracted from the above tarball. if you have obtained the source via the command 'git clone', however, do note that line-endings of files in your working directory might differ from line-endings of the respective files in the upstream repository. --- gcc/testsuite/ada/acats/tests/c9/c954a02.a | 259 +++++++++++++++++++++++++++++ 1 file changed, 259 insertions(+) create mode 100644 gcc/testsuite/ada/acats/tests/c9/c954a02.a (limited to 'gcc/testsuite/ada/acats/tests/c9/c954a02.a') diff --git a/gcc/testsuite/ada/acats/tests/c9/c954a02.a b/gcc/testsuite/ada/acats/tests/c9/c954a02.a new file mode 100644 index 000000000..7d61aea8c --- /dev/null +++ b/gcc/testsuite/ada/acats/tests/c9/c954a02.a @@ -0,0 +1,259 @@ +-- C954A02.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 requeued with abort on a protected entry queue +-- is aborted, the protected entry call is canceled and the aborted +-- task becomes completed. +-- +-- TEST DESCRIPTION: +-- Declare a protected type which simulates a printer device driver +-- (foundation code). +-- +-- Declare a task which simulates a printer server for multiple printers. +-- +-- For the protected type, declare an entry with a barrier that is set +-- false by a protected procedure (which simulates starting a print job +-- on the printer), and is set true by a second protected procedure (which +-- simulates a handler called when the printer interrupts, indicating +-- that printing is done). +-- +-- For the task, declare an entry whose corresponding accept statement +-- contains a call to first protected procedure of the protected type +-- (which sets the barrier of the protected entry to false), followed by +-- a requeue with abort to the protected entry. Declare a second entry +-- which does nothing. +-- +-- Declare a "requesting" task which calls the printer server task entry +-- (and thus executes the requeue). Attempt to abort the requesting +-- task. Verify that it is aborted, that the requeued entry call is +-- canceled, and that the corresponding entry body is not executed. +-- +-- TEST FILES: +-- This test depends on the following foundation code: +-- +-- F954A00.A +-- +-- +-- +-- CHANGE HISTORY: +-- 06 Dec 94 SAIC ACVC 2.0 +-- 10 Oct 96 SAIC Added pragma elaborate +-- +--! + +package C954A02_0 is -- Printer server abstraction. + + -- Simulate a system with multiple printers. The entry Print requests + -- that data be printed on the next available printer. The entry call + -- is accepted when a printer is available, and completes when printing + -- is done. + + + task Printer_Server is + entry Print (File_Name : String); -- Test the requeue statement. + entry Verify_Results; -- Artifice for test purposes. + end Printer_Server; + +end C954A02_0; + + + --==================================================================-- + + +with Report; +with ImpDef; + +with F954A00; -- Printer device abstraction. +use F954A00; +pragma Elaborate(F954a00); + +package body C954A02_0 is -- Printer server abstraction. + + task body Printer_Server is + Printers_Busy : Boolean := True; + Index : Printer_ID := 1; + Print_Accepted : Boolean := False; + begin + + loop + -- Wait for a printer to become available: + + while Printers_Busy loop + Printers_Busy := False; -- Exit loop if + -- entry accepted. + select + Printer(Index).Done_Printing; -- Accepted immed. + -- when printer is + -- available. + else + Index := 1 + (Index mod Number_Of_Printers);-- Entry not immed. + Printers_Busy := True; -- accepted; keep + end select; -- looping. + + -- Allow other task to get control + delay ImpDef.Minimum_Task_Switch; + + end loop; -- Value of Index + -- at loop exit + -- identifies the + -- avail. printer. + + -- Wait for a print request or terminate: + + select + accept Print (File_Name : String) do + Print_Accepted := True; -- Allow + -- Verify_Results + -- to be accepted. + + Printer(Index).Start_Printing (File_Name); -- Begin printing on + -- the available + -- -- -- printer. + -- Requeue is tested here -- + -- -- + -- Requeue caller so + requeue Printer(Index).Done_Printing -- server task free + with abort; -- to accept other + end Print; -- requests. + or + -- Guard ensures that Verify_Results cannot be accepted + -- until after Print has been accepted. This avoids a + -- race condition in the main program. + + when Print_Accepted => accept Verify_Results; -- Artifice for + -- testing purposes. + or + terminate; + end select; + + end loop; + + exception + when others => + Report.Failed ("Exception raised in Printer_Server task"); + end Printer_Server; + + +end C954A02_0; + + + --==================================================================-- + + +with Report; +with ImpDef; + +with F954A00; -- Printer device abstraction. +with C954A02_0; -- Printer server abstraction. + +use C954A02_0; +use F954A00; + +procedure C954A02 is + + -- Length of time which simulates a very long process + Long_Enough : constant Duration := ImpDef.Clear_Ready_Queue; + + --==============================================-- + + task Print_Request; -- Send a print request. + + task body Print_Request is + My_File : constant String := "MYFILE.DAT"; + begin + Printer_Server.Print (My_File); -- Invoke requeue statement. + Report.Failed ("Task continued execution following entry call"); + exception + when others => + Report.Failed ("Exception raised in Print_Request task"); + end Print_Request; + + --==============================================-- + +begin -- Main program. + + Report.Test ("C954A02", "Abort a requeue on a Protected entry"); + + -- To pass this test, the following must be true: + -- + -- (A) The abort of Print_Request takes place immediately. + -- (B) The Done_Printing entry call is canceled, and the corresponding + -- entry body is not executed. + -- + -- Call the entry Verify_Results. The entry call will not be accepted + -- until after Print_Request has been requeued to Done_Printing. + + Printer_Server.Verify_Results; -- Accepted after Print_Request is + -- requeued to Done_Printing. + + -- Verify that the Done_Printing entry call has not been completed. + -- + if Printer(1).Is_Done then + Report.Failed ("Target entry of requeue executed prematurely"); + else + + -- Simulate an application which needs access to the printer within + -- a specified time, and which aborts the current printer job if time + -- runs out. + + select + Printer(1).Done_Printing; -- Wait for printer to come free. + or + delay Long_Enough; -- Print job took too long. + abort Print_Request; -- Abort print job. + end select; + + Printer_Server.Verify_Results; -- Abortion completion point: force + -- Print_Request abort to complete. + + -- Verify (A): that Print_Request has been aborted. + -- Note: the test will hang if the task as not been aborted + -- + while not Print_Request'Terminated loop + delay ImpDef.Minimum_Task_Switch; + end loop; + + -- Verify (B): that the Done_Printing entry call was canceled, and + -- the corresponding entry body was not executed. + -- + -- Set the barrier of the entry to true, then check that the entry + -- body is not executed. If the entry call is NOT canceled, the + -- entry body will execute when the barrier is set true. + + Printer(1).Handle_Interrupt; -- Simulate a printer interrupt, + -- signaling that printing is + -- done. + if Printer(1).Is_Done then + Report.Failed ("Entry call was not canceled"); + end if; + + + end if; + + + Report.Result; + +end C954A02; -- cgit v1.2.3