Panda3D

atomicAdjustDummyImpl.h

00001 // Filename: atomicAdjustDummyImpl.h
00002 // Created by:  drose (09Aug02)
00003 //
00004 ////////////////////////////////////////////////////////////////////
00005 //
00006 // PANDA 3D SOFTWARE
00007 // Copyright (c) Carnegie Mellon University.  All rights reserved.
00008 //
00009 // All use of this software is subject to the terms of the revised BSD
00010 // license.  You should have received a copy of this license along
00011 // with this source code in a file named "LICENSE."
00012 //
00013 ////////////////////////////////////////////////////////////////////
00014 
00015 #ifndef ATOMICADJUSTDUMMYIMPL_H
00016 #define ATOMICADJUSTDUMMYIMPL_H
00017 
00018 #include "dtoolbase.h"
00019 #include "selectThreadImpl.h"
00020 
00021 #include "numeric_types.h"
00022 
00023 ////////////////////////////////////////////////////////////////////
00024 //       Class : AtomicAdjustDummyImpl
00025 // Description : A trivial implementation for atomic adjustments for
00026 //               systems that don't require multiprogramming, and
00027 //               therefore don't require special atomic operations.
00028 ////////////////////////////////////////////////////////////////////
00029 class EXPCL_DTOOL AtomicAdjustDummyImpl {
00030 public:
00031   typedef long Integer;
00032   typedef void *Pointer;
00033 
00034   INLINE static void inc(TVOLATILE Integer &var);
00035   INLINE static bool dec(TVOLATILE Integer &var);
00036   INLINE static void add(TVOLATILE Integer &var, Integer delta);
00037   INLINE static Integer set(TVOLATILE Integer &var, Integer new_value);
00038   INLINE static Integer get(const TVOLATILE Integer &var);
00039 
00040   INLINE static Pointer set_ptr(TVOLATILE Pointer &var, Pointer new_value);
00041   INLINE static Pointer get_ptr(const TVOLATILE Pointer &var);
00042 
00043   INLINE static Integer compare_and_exchange(TVOLATILE Integer &mem, 
00044                                              Integer old_value,
00045                                              Integer new_value);
00046 
00047   INLINE static Pointer compare_and_exchange_ptr(TVOLATILE Pointer &mem, 
00048                                                  Pointer old_value,
00049                                                  Pointer new_value);
00050 };
00051 
00052 #include "atomicAdjustDummyImpl.I"
00053 
00054 #endif
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