85 lines
3.2 KiB
Ada
85 lines
3.2 KiB
Ada
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------------------------------------------------------------------------------
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-- --
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-- GNAT LIBRARY COMPONENTS --
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-- --
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-- G N A T . S E M A P H O R E S --
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-- --
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-- B o d y --
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-- --
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-- Copyright (C) 2003-2010, AdaCore --
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-- --
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-- GNAT is free software; you can redistribute it and/or modify it under --
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-- terms of the GNU General Public License as published by the Free Soft- --
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-- ware Foundation; either version 3, or (at your option) any later ver- --
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-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
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-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
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-- or FITNESS FOR A PARTICULAR PURPOSE. --
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-- --
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-- As a special exception under Section 7 of GPL version 3, you are granted --
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-- additional permissions described in the GCC Runtime Library Exception, --
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-- version 3.1, as published by the Free Software Foundation. --
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-- --
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-- You should have received a copy of the GNU General Public License and --
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-- a copy of the GCC Runtime Library Exception along with this program; --
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-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
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-- <http://www.gnu.org/licenses/>. --
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-- --
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-- GNAT was originally developed by the GNAT team at New York University. --
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-- It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). --
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-- --
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------------------------------------------------------------------------------
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package body GNAT.Semaphores is
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------------------------
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-- Counting_Semaphore --
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------------------------
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protected body Counting_Semaphore is
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-----------
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-- Seize --
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-----------
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entry Seize when Count > 0 is
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begin
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Count := Count - 1;
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end Seize;
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-------------
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-- Release --
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-------------
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procedure Release is
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begin
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Count := Count + 1;
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end Release;
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end Counting_Semaphore;
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----------------------
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-- Binary_Semaphore --
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----------------------
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protected body Binary_Semaphore is
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-----------
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-- Seize --
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-----------
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entry Seize when Available is
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begin
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Available := False;
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end Seize;
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-------------
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-- Release --
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-------------
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procedure Release is
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begin
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Available := True;
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end Release;
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end Binary_Semaphore;
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end GNAT.Semaphores;
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