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------------------------------------------------------------------------------ -- -- -- GNAT LIBRARY COMPONENTS -- -- -- -- G N A T . S E M A P H O R E S -- -- -- -- B o d y -- -- -- -- Copyright (C) 2003-2005, AdaCore -- -- -- -- 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. -- -- It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). -- -- -- ------------------------------------------------------------------------------ package body GNAT.Semaphores is ------------------------ -- Counting_Semaphore -- ------------------------ protected body Counting_Semaphore is ----------- -- Seize -- ----------- entry Seize when Count > 0 is begin Count := Count - 1; end Seize; ------------- -- Release -- ------------- procedure Release is begin Count := Count + 1; end Release; end Counting_Semaphore; ---------------------- -- Binary_Semaphore -- ---------------------- protected body Binary_Semaphore is ----------- -- Seize -- ----------- entry Seize when Available is begin Available := False; end Seize; ------------- -- Release -- ------------- procedure Release is begin Available := True; end Release; end Binary_Semaphore; end GNAT.Semaphores;