gcc/ada/libgnat/g-os_lib.ads

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT COMPILER COMPONENTS                         --
   4 --                                                                          --
   5 --                          G N A T . O S _ L I B                           --
   6 --                                                                          --
   7 --                                 S p e c                                  --
   8 --                                                                          --
   9 --          Copyright (C) 1995-2017, 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 --  Operating system interface facilities
  33
  34 --  This package contains types and procedures for interfacing to the
  35 --  underlying OS. It is used by the GNAT compiler and by tools associated
  36 --  with the GNAT compiler, and therefore works for the various operating
  37 --  systems to which GNAT has been ported. This package will undoubtedly grow
  38 --  as new services are needed by various tools.
  39
  40 --  This package tends to use fairly low-level Ada in order to not bring in
  41 --  large portions of the RTL. For example, functions return access to string
  42 --  as part of avoiding functions returning unconstrained types.
  43
  44 --  Except where specifically noted, these routines are portable across all
  45 --  GNAT implementations on all supported operating systems.
  46
  47 --  See file s-os_lib.ads for full documentation of the interface
  48
  49 with System.OS_Lib;
  50
  51 package GNAT.OS_Lib renames System.OS_Lib;