Jack2 1.9.6

JackAtomic.h

00001 /*
00002 Copyright (C) 2004-2008 Grame
00003 
00004 This program is free software; you can redistribute it and/or modify
00005 it under the terms of the GNU Lesser General Public License as published by
00006 the Free Software Foundation; either version 2.1 of the License, or
00007 (at your option) any later version.
00008 
00009 This program is distributed in the hope that it will be useful,
00010 but WITHOUT ANY WARRANTY; without even the implied warranty of
00011 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00012 GNU Lesser General Public License for more details.
00013 
00014 You should have received a copy of the GNU Lesser General Public License
00015 along with this program; if not, write to the Free Software
00016 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
00017 
00018 */
00019 
00020 #ifndef __JackAtomic__
00021 #define __JackAtomic__
00022 
00023 #include "JackTypes.h"
00024 #include "JackAtomic_os.h"
00025 
00026 static inline long INC_ATOMIC(volatile SInt32* val)
00027 {
00028     SInt32 actual;
00029     do {
00030         actual = *val;
00031     } while (!CAS(actual, actual + 1, val));
00032     return actual;
00033 }
00034 
00035 static inline long DEC_ATOMIC(volatile SInt32* val)
00036 {
00037     SInt32 actual;
00038     do {
00039         actual = *val;
00040     } while (!CAS(actual, actual - 1, val));
00041     return actual;
00042 }
00043 
00044 #endif
00045 
00046