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/c954001.a | 273 +++++++++++++++++++++++++++++ 1 file changed, 273 insertions(+) create mode 100644 gcc/testsuite/ada/acats/tests/c9/c954001.a (limited to 'gcc/testsuite/ada/acats/tests/c9/c954001.a') diff --git a/gcc/testsuite/ada/acats/tests/c9/c954001.a b/gcc/testsuite/ada/acats/tests/c9/c954001.a new file mode 100644 index 000000000..3112cce2b --- /dev/null +++ b/gcc/testsuite/ada/acats/tests/c9/c954001.a @@ -0,0 +1,273 @@ +-- C954001.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 a requeue statement within an entry_body with parameters +-- may requeue the entry call to a protected entry with a subtype- +-- conformant parameter profile. Check that, if the call is queued on the +-- new entry's queue, the original caller remains blocked after the +-- requeue, but the entry_body containing the requeue is completed. +-- +-- TEST DESCRIPTION: +-- Declare a protected object which simulates a disk device. Declare an +-- entry that requeues the caller to a second entry if the disk head is +-- not in the proper location, but first sets the second entry's barrier +-- to false. Declare a procedure which sets the second entry's barrier +-- to true. +-- +-- Declare a task which calls the first entry such that the requeue is +-- called. This task should be queued on the second entry and remain +-- blocked, and the first entry should be complete. Call the procedure +-- which releases the second entry's queue. The second entry should +-- complete, after which the task should complete. +-- +-- +-- CHANGE HISTORY: +-- 06 Dec 94 SAIC ACVC 2.0 +-- +--! + +package C954001_0 is -- Disk management abstraction. + + + -- Simulate a read-only disk device with a head that may be moved to + -- different tracks. If a read request is issued for the current + -- track, the request can be satisfied immediately. Otherwise, the head + -- must be moved to the correct track, during which time the calling task + -- is blocked. When the head reaches the correct track, the disk generates + -- an interrupt, after which the request can be satisfied, and the + -- calling task can proceed. + + Buffer_Size : constant := 100; + + type Disk_Buffer is new String (1 .. Buffer_Size); + type Disk_Track is new Natural; + + type Disk_Address is record + Track : Disk_Track; + -- Additional components. + end record; + + Initial_Track : constant Disk_Track := 0; + New_Track : constant Disk_Track := 5; + + --==============================================-- + + protected Disk_Device is + + entry Read (Where : Disk_Address; -- Read data from disk + Data : out Disk_Buffer); -- track. + + procedure Disk_Interrupt; -- Handle interrupt + -- from disk. + + function TC_Track return Disk_Track; -- Return current track. + + function TC_Pending_Queued return Boolean; -- True when there is + -- an entry in queue + + private + + entry Pending_Read (Where : Disk_Address; -- Wait for head to + Data : out Disk_Buffer); -- move then read data. + + Current_Track : Disk_Track := Initial_Track; -- Current disk track. + Operation_Pending : Boolean := False; -- Vis. entry barrier. + Disk_Interrupted : Boolean := False; -- Priv. entry barrier. + + end Disk_Device; + + +end C954001_0; + + + --==================================================================-- + + +package body C954001_0 is -- Disk management abstraction. + + + protected body Disk_Device is + + entry Read (Where : Disk_Address; Data : out Disk_Buffer) + when not Operation_Pending is + begin + if (Where.Track = Current_Track) then -- If the head is over the + -- Read data from disk... -- requested track, read + null; -- the data. + + else -- Otherwise, defer read + Operation_Pending := True; -- while head is moved to + -- correct track (signaled + -- -- -- by a disk interrupt). + -- Requeue is tested here -- + -- -- + + requeue Pending_Read; + + end if; + end Read; + + + procedure Disk_Interrupt is -- Called when the disk + begin -- interrupts, indicating + Disk_Interrupted := True; -- that the head is over + end Disk_Interrupt; -- the correct track. + + + function TC_Track return Disk_Track is -- Artifice required for + begin -- testing purposes. + return (Current_Track); + end TC_Track; + + + entry Pending_Read (Where : Disk_Address; Data : out Disk_Buffer) + when Disk_Interrupted is + begin + Current_Track := Where.Track; -- Head is now over the + -- Read data from disk... -- correct track; read + Operation_Pending := False; -- the data. + Disk_Interrupted := False; + end Pending_Read; + + function TC_Pending_Queued return Boolean is + begin + -- Return true when there is something on the Pending_Read queue + return (Pending_Read'Count /=0); + end TC_Pending_Queued; + + end Disk_Device; + + +end C954001_0; + + + --==================================================================-- + + +with Report; +with ImpDef; + +with C954001_0; -- Disk management abstraction. +use C954001_0; + +procedure C954001 is + + + task type Read_Task is -- an unusual (but legal) declaration + end Read_Task; + -- + -- + task body Read_Task is + Location : constant Disk_Address := (Track => New_Track); + Data : Disk_Buffer := (others => ' '); + begin + Disk_Device.Read (Location, Data); -- Invoke requeue statement. + exception + when others => + Report.Failed ("Exception raised in task"); + end Read_Task; + + --==============================================-- + +begin -- Main program. + + Report.Test ("C954001", "Requeue from an entry within a P.O. " & + "to a private entry within the same P.O."); + + + declare + + IO_Request : Read_Task; -- Request a read from other + -- than the current track. + -- IO_Request will be requeued + -- from Read to Pending_Read. + begin + + -- To pass this test, the following must be true: + -- + -- (A) The Read entry call made by the task IO_Request must be + -- completed by the requeue. + -- (B) IO_Request must remain blocked following the requeue. + -- (C) IO_Request must be queued on the Pending_Read entry queue. + -- (D) IO_Request must continue execution after the Pending_Read + -- entry completes. + -- + -- First, verify (A): that the Read entry call is complete. + -- + -- Call a protected operation (Disk_Device.TC_Track). Since no two + -- protected actions may proceed concurrently unless both are protected + -- function calls, a call to a protected operation at this point can + -- proceed only if the Read entry call is already complete. + -- + -- Note that if Read is NOT complete, the test will likely hang here. + -- + -- Next, verify (B): that IO_Request remains blocked following the + -- requeue. Also verify that Pending_Read (the entry to which + -- IO_Request should have been queued) has not yet executed. + + -- Wait until the task had made the call and the requeue has been + -- effected. + while not Disk_Device.TC_Pending_Queued loop + delay ImpDef.Minimum_Task_Switch; + end loop; + + if Disk_Device.TC_Track /= Initial_Track then + Report.Failed ("Target entry of requeue executed prematurely"); + elsif IO_Request'Terminated then + Report.Failed ("Caller did not remain blocked after " & + "the requeue or was never requeued"); + else + + -- Verify (C): that IO_Request is queued on the + -- Pending_Read entry queue. + -- + -- Set the barrier for Pending_Read to true. Check that the + -- current track is updated and that IO_Request terminates. + + Disk_Device.Disk_Interrupt; -- Simulate a disk interrupt, + -- signaling that the head is + -- over the correct track. + + -- The Pending_Read entry body will complete before the next + -- protected action is called (Disk_Device.TC_Track). + + if Disk_Device.TC_Track /= New_Track then + Report.Failed ("Caller was not requeued on target entry"); + end if; + + -- Finally, verify (D): that Read_Task continues after Pending_Read + -- completes. + -- + -- Note that the test will hang here if Read_Task does not continue + -- executing following the completion of the requeued entry call. + + end if; + + end; -- We will not exit the declare block until the task completes + + Report.Result; + +end C954001; -- cgit v1.2.3