gdb/testsuite/gdb.ada/atomic_enum/pck.adb

   1 --  Copyright 2008-2022 Free Software Foundation, Inc.
   2 --
   3 --  This program is free software; you can redistribute it and/or modify
   4 --  it under the terms of the GNU General Public License as published by
   5 --  the Free Software Foundation; either version 3 of the License, or
   6 --  (at your option) any later version.
   7 --
   8 --  This program is distributed in the hope that it will be useful,
   9 --  but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 --  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11 --  GNU General Public License for more details.
  12 --
  13 --  You should have received a copy of the GNU General Public License
  14 --  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  15
  16 package body Pck is
  17
  18    type Data_T is (One, Two, Three);
  19    pragma Atomic (Data_T);
  20
  21    Data_Flag : Data_T := One;
  22
  23    procedure Increment is
  24    begin
  25       if Data_Flag = Data_T'Last then
  26          Data_Flag := Data_T'First;
  27       else
  28          Data_Flag := Data_T'Succ (Data_Flag);
  29       end if;
  30    end Increment;
  31
  32    function Is_First return Boolean is
  33    begin
  34       return Data_Flag = Data_T'First;
  35    end Is_First;
  36
  37 end Pck;