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Diffstat (limited to 'gcc-4.3.1/gcc/ada/s-restri.ads')
| -rw-r--r-- | gcc-4.3.1/gcc/ada/s-restri.ads | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/gcc-4.3.1/gcc/ada/s-restri.ads b/gcc-4.3.1/gcc/ada/s-restri.ads new file mode 100644 index 000000000..f1909e3cc --- /dev/null +++ b/gcc-4.3.1/gcc/ada/s-restri.ads @@ -0,0 +1,73 @@ +------------------------------------------------------------------------------ +-- -- +-- 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) 2004-2006, 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 2, 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. See the GNU General Public License -- +-- for more details. You should have received a copy of the GNU General -- +-- Public License distributed with GNAT; see file COPYING. If not, write -- +-- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, -- +-- Boston, MA 02110-1301, USA. -- +-- -- +-- As a special exception, if other files instantiate generics from this -- +-- unit, or you link this unit with other files to produce an executable, -- +-- this unit does not by itself cause the resulting executable to be -- +-- covered by the GNU General Public License. This exception does not -- +-- however invalidate any other reasons why the executable file might be -- +-- covered by the GNU Public License. -- +-- -- +-- 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. + +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; |