78 lines
4.1 KiB
Ada
78 lines
4.1 KiB
Ada
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------------------------------------------------------------------------------
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-- --
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-- GNAT COMPILER COMPONENTS --
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-- --
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-- S Y S T E M . R E S T R I C T I O N S --
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-- --
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-- S p e c --
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-- --
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-- Copyright (C) 2004-2013, Free Software Foundation, Inc. --
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-- --
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-- GNAT is free software; you can redistribute it and/or modify it under --
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-- terms of the GNU General Public License as published by the Free Soft- --
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-- ware Foundation; either version 3, or (at your option) any later ver- --
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-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
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-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
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-- or FITNESS FOR A PARTICULAR PURPOSE. --
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-- --
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-- As a special exception under Section 7 of GPL version 3, you are granted --
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-- additional permissions described in the GCC Runtime Library Exception, --
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-- version 3.1, as published by the Free Software Foundation. --
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-- --
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-- You should have received a copy of the GNU General Public License and --
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-- a copy of the GCC Runtime Library Exception along with this program; --
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-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
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-- <http://www.gnu.org/licenses/>. --
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-- --
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-- GNAT was originally developed by the GNAT team at New York University. --
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-- Extensive contributions were provided by Ada Core Technologies Inc. --
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-- --
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------------------------------------------------------------------------------
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-- This package provides a run-time interface for checking the set of
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-- restrictions that applies to the current partition. The information
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-- comes both from explicit restriction pragmas present, and also from
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-- compile time checking.
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-- The package simply contains an instantiation of System.Rident, but
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-- with names discarded, so that we do not have image tables for the
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-- large restriction enumeration types at run time.
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pragma Compiler_Unit_Warning;
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with System.Rident;
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package System.Restrictions is
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pragma Preelaborate;
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pragma Discard_Names;
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package Rident is new System.Rident;
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-- Instantiate a copy of System.Rident without enumeration image names
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Run_Time_Restrictions : Rident.Restrictions_Info;
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-- Restrictions as set by the user, or detected by the binder. See details
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-- in package System.Rident for what restrictions are included in the list
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-- and the format of the information.
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--
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-- Note that a restriction which is both Set and Violated at run-time means
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-- that the violation was detected as part of the Ada run-time and not as
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-- part of user code.
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------------------
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-- Subprograms --
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-----------------
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function Abort_Allowed return Boolean;
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pragma Inline (Abort_Allowed);
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-- Tests to see if abort is allowed by the current restrictions settings.
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-- For abort to be allowed, either No_Abort_Statements must be False, or
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-- Max_Asynchronous_Select_Nesting must be non-zero.
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function Tasking_Allowed return Boolean;
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pragma Inline (Tasking_Allowed);
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-- Tests to see if tasking operations are allowed by the current
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-- restrictions settings. For tasking to be allowed, No_Tasking must
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-- be False, and Max_Tasks must not be set to zero.
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end System.Restrictions;
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