gcc/ada/libgnat/g-ctrl_c.adb

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT RUN-TIME COMPONENTS                         --
   4 --                                                                          --
   5 --                          G N A T . C T R L _ C                           --
   6 --                                                                          --
   7 --                                 B o d y                                  --
   8 --                                                                          --
   9 --                      Copyright (C) 2002-2020, AdaCore                    --
  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 package body GNAT.Ctrl_C is
  33
  34    type C_Handler_Type is access procedure;
  35    pragma Convention (C, C_Handler_Type);
  36
  37    Ada_Handler : Handler_Type;
  38
  39    procedure C_Handler;
  40    pragma Convention (C, C_Handler);
  41
  42    ---------------
  43    -- C_Handler --
  44    ---------------
  45
  46    procedure C_Handler is
  47    begin
  48       Ada_Handler.all;
  49    end C_Handler;
  50
  51    ---------------------
  52    -- Install_Handler --
  53    ---------------------
  54
  55    procedure Install_Handler (Handler : Handler_Type) is
  56       procedure Internal (Handler : C_Handler_Type);
  57       pragma Import (C, Internal, "__gnat_install_int_handler");
  58    begin
  59       Ada_Handler := Handler;
  60       Internal (C_Handler'Access);
  61    end Install_Handler;
  62
  63 end GNAT.Ctrl_C;