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------------------------------------------------------------------------------
-- --
-- GNAT COMPILER COMPONENTS --
-- --
-- S Y S T E M . R E S T R I C T I O N S --
-- --
-- S p e c --
-- --
-- Copyright (C) 2004-2009, Free Software Foundation, Inc. --
-- --
-- GNAT is free software; you can redistribute it and/or modify it under --
-- terms of the GNU General Public License as published by the Free Soft- --
-- ware Foundation; either version 3, or (at your option) any later ver- --
-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
-- or FITNESS FOR A PARTICULAR PURPOSE. --
-- --
-- As a special exception under Section 7 of GPL version 3, you are granted --
-- additional permissions described in the GCC Runtime Library Exception, --
-- version 3.1, as published by the Free Software Foundation. --
-- --
-- You should have received a copy of the GNU General Public License and --
-- a copy of the GCC Runtime Library Exception along with this program; --
-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
-- <http://www.gnu.org/licenses/>. --
-- --
-- GNAT was originally developed by the GNAT team at New York University. --
-- Extensive contributions were provided by Ada Core Technologies Inc. --
-- --
------------------------------------------------------------------------------
-- This package provides a run-time interface for checking the set of
-- restrictions that applies to the current partition. The information
-- comes both from explicit restriction pragmas present, and also from
-- compile time checking.
-- The package simply contains an instantiation of System.Rident, but
-- with names discarded, so that we do not have image tables for the
-- large restriction enumeration types at run time.
pragma Compiler_Unit;
with System.Rident;
package System.Restrictions is
pragma Preelaborate;
pragma Discard_Names;
package Rident is new System.Rident;
Run_Time_Restrictions : Rident.Restrictions_Info;
-- Restrictions as set by the user, or detected by the binder.
-- Note that a restriction which is both Set and Violated at run-time means
-- that the violation was detected as part of the Ada run-time and not
-- as part of user code.
------------------
-- Subprograms --
-----------------
function Abort_Allowed return Boolean;
pragma Inline (Abort_Allowed);
-- Tests to see if abort is allowed by the current restrictions settings.
-- For abort to be allowed, either No_Abort_Statements must be False,
-- or Max_Asynchronous_Select_Nesting must be non-zero.
function Tasking_Allowed return Boolean;
pragma Inline (Tasking_Allowed);
-- Tests to see if tasking operations are allowed by the current
-- restrictions settings. For tasking to be allowed, No_Tasking
-- must be False, and Max_Tasks must not be set to zero.
end System.Restrictions;
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