| ------------------------------------------------------------------------------ |
| -- -- |
| -- 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) 2004-2013, 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_Warning; |
| |
| with System.Rident; |
| |
| package System.Restrictions is |
| pragma Preelaborate; |
| |
| pragma Discard_Names; |
| package Rident is new System.Rident; |
| -- Instantiate a copy of System.Rident without enumeration image names |
| |
| Run_Time_Restrictions : Rident.Restrictions_Info; |
| -- Restrictions as set by the user, or detected by the binder. See details |
| -- in package System.Rident for what restrictions are included in the list |
| -- and the format of the information. |
| -- |
| -- 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; |
