historical/toontown-classic.git/panda/include/atomicAdjustWin32Impl.h
2024-01-16 11:20:27 -06:00

67 lines
2 KiB
C++

/**
* PANDA 3D SOFTWARE
* Copyright (c) Carnegie Mellon University. All rights reserved.
*
* All use of this software is subject to the terms of the revised BSD
* license. You should have received a copy of this license along
* with this source code in a file named "LICENSE."
*
* @file atomicAdjustWin32Impl.h
* @author drose
* @date 2006-02-07
*/
#ifndef ATOMICADJUSTWIN32IMPL_H
#define ATOMICADJUSTWIN32IMPL_H
#include "dtoolbase.h"
#include "selectThreadImpl.h"
#ifdef WIN32_VC
#include "numeric_types.h"
#ifndef WIN32_LEAN_AND_MEAN
#define WIN32_LEAN_AND_MEAN 1
#endif
#include <windows.h>
/**
* Uses Windows native calls to implement atomic adjustments.
*/
class EXPCL_DTOOL_DTOOLBASE AtomicAdjustWin32Impl {
public:
#ifdef _WIN64
// For 64-bit builds, we'd prefer to use a 64-bit integer.
typedef ALIGN_8BYTE LONGLONG Integer;
typedef void *UnalignedPointer;
typedef ALIGN_8BYTE UnalignedPointer Pointer;
#else
typedef ALIGN_4BYTE LONG Integer;
typedef void *UnalignedPointer;
typedef ALIGN_4BYTE UnalignedPointer Pointer;
#endif // _WIN64
ALWAYS_INLINE static void inc(TVOLATILE Integer &var);
ALWAYS_INLINE static bool dec(TVOLATILE Integer &var);
INLINE static Integer add(TVOLATILE Integer &var, Integer delta);
ALWAYS_INLINE static Integer set(TVOLATILE Integer &var, Integer new_value);
ALWAYS_INLINE static Integer get(const TVOLATILE Integer &var);
ALWAYS_INLINE static Pointer set_ptr(TVOLATILE Pointer &var, Pointer new_value);
ALWAYS_INLINE static Pointer get_ptr(const TVOLATILE Pointer &var);
INLINE static Integer compare_and_exchange(TVOLATILE Integer &mem,
Integer old_value,
Integer new_value);
INLINE static Pointer compare_and_exchange_ptr(TVOLATILE Pointer &mem,
Pointer old_value,
Pointer new_value);
};
#include "atomicAdjustWin32Impl.I"
#endif // WIN32_VC
#endif