Mercurial > hg > CbC > CbC_gcc
comparison gcc/ada/libgnat/s-restri.ads @ 111:04ced10e8804
gcc 7
| author | kono |
|---|---|
| date | Fri, 27 Oct 2017 22:46:09 +0900 |
| parents | |
| children | 84e7813d76e9 |
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| 68:561a7518be6b | 111:04ced10e8804 |
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| 1 ------------------------------------------------------------------------------ | |
| 2 -- -- | |
| 3 -- GNAT COMPILER COMPONENTS -- | |
| 4 -- -- | |
| 5 -- S Y S T E M . R E S T R I C T I O N S -- | |
| 6 -- -- | |
| 7 -- S p e c -- | |
| 8 -- -- | |
| 9 -- Copyright (C) 2004-2017, Free Software Foundation, Inc. -- | |
| 10 -- -- | |
| 11 -- GNAT is free software; you can redistribute it and/or modify it under -- | |
| 12 -- terms of the GNU General Public License as published by the Free Soft- -- | |
| 13 -- ware Foundation; either version 3, or (at your option) any later ver- -- | |
| 14 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- | |
| 15 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- | |
| 16 -- or FITNESS FOR A PARTICULAR PURPOSE. -- | |
| 17 -- -- | |
| 18 -- As a special exception under Section 7 of GPL version 3, you are granted -- | |
| 19 -- additional permissions described in the GCC Runtime Library Exception, -- | |
| 20 -- version 3.1, as published by the Free Software Foundation. -- | |
| 21 -- -- | |
| 22 -- You should have received a copy of the GNU General Public License and -- | |
| 23 -- a copy of the GCC Runtime Library Exception along with this program; -- | |
| 24 -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see -- | |
| 25 -- <http://www.gnu.org/licenses/>. -- | |
| 26 -- -- | |
| 27 -- GNAT was originally developed by the GNAT team at New York University. -- | |
| 28 -- Extensive contributions were provided by Ada Core Technologies Inc. -- | |
| 29 -- -- | |
| 30 ------------------------------------------------------------------------------ | |
| 31 | |
| 32 -- This package provides a run-time interface for checking the set of | |
| 33 -- restrictions that applies to the current partition. The information | |
| 34 -- comes both from explicit restriction pragmas present, and also from | |
| 35 -- compile time checking. | |
| 36 | |
| 37 -- The package simply contains an instantiation of System.Rident, but | |
| 38 -- with names discarded, so that we do not have image tables for the | |
| 39 -- large restriction enumeration types at run time. | |
| 40 | |
| 41 pragma Compiler_Unit_Warning; | |
| 42 | |
| 43 with System.Rident; | |
| 44 | |
| 45 package System.Restrictions is | |
| 46 pragma Preelaborate; | |
| 47 | |
| 48 pragma Discard_Names; | |
| 49 package Rident is new System.Rident; | |
| 50 -- Instantiate a copy of System.Rident without enumeration image names | |
| 51 | |
| 52 Run_Time_Restrictions : Rident.Restrictions_Info; | |
| 53 -- Restrictions as set by the user, or detected by the binder. See details | |
| 54 -- in package System.Rident for what restrictions are included in the list | |
| 55 -- and the format of the information. | |
| 56 -- | |
| 57 -- Note that a restriction which is both Set and Violated at run-time means | |
| 58 -- that the violation was detected as part of the Ada run-time and not as | |
| 59 -- part of user code. | |
| 60 | |
| 61 ------------------ | |
| 62 -- Subprograms -- | |
| 63 ----------------- | |
| 64 | |
| 65 function Abort_Allowed return Boolean; | |
| 66 pragma Inline (Abort_Allowed); | |
| 67 -- Tests to see if abort is allowed by the current restrictions settings. | |
| 68 -- For abort to be allowed, either No_Abort_Statements must be False, or | |
| 69 -- Max_Asynchronous_Select_Nesting must be non-zero. | |
| 70 | |
| 71 function Tasking_Allowed return Boolean; | |
| 72 pragma Inline (Tasking_Allowed); | |
| 73 -- Tests to see if tasking operations are allowed by the current | |
| 74 -- restrictions settings. For tasking to be allowed, No_Tasking must | |
| 75 -- be False, and Max_Tasks must not be set to zero. | |
| 76 | |
| 77 end System.Restrictions; |