1// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved. 2// Use of this source code is governed by a BSD-style license that can be 3// found in the LICENSE file under third_party_mods/chromium directory of 4// source tree or at 5// http://src.chromium.org/viewvc/chrome/trunk/src/LICENSE 6 7// Various inline functions and macros to fix compilation of 32 bit target 8// on MSVC with /Wp64 flag enabled. 9 10// The original code can be found here: 11// http://src.chromium.org/svn/trunk/src/base/fix_wp64.h 12 13#ifndef WEBRTC_SYSTEM_WRAPPERS_SOURCE_FIX_INTERLOCKED_EXCHANGE_POINTER_WINDOWS_H_ 14#define WEBRTC_SYSTEM_WRAPPERS_SOURCE_FIX_INTERLOCKED_EXCHANGE_POINTER_WINDOWS_H_ 15 16#include <windows.h> 17 18// Platform SDK fixes when building with /Wp64 for a 32 bits target. 19#if !defined(_WIN64) && defined(_Wp64) 20 21#ifdef InterlockedExchangePointer 22#undef InterlockedExchangePointer 23// The problem is that the macro provided for InterlockedExchangePointer() is 24// doing a (LONG) C-style cast that triggers invariably the warning C4312 when 25// building on 32 bits. 26inline void* InterlockedExchangePointer(void* volatile* target, void* value) { 27 return reinterpret_cast<void*>(static_cast<LONG_PTR>(InterlockedExchange( 28 reinterpret_cast<volatile LONG*>(target), 29 static_cast<LONG>(reinterpret_cast<LONG_PTR>(value))))); 30} 31#endif // #ifdef InterlockedExchangePointer 32 33#endif // #if !defined(_WIN64) && defined(_Wp64) 34 35#endif // WEBRTC_SYSTEM_WRAPPERS_SOURCE_FIX_INTERLOCKED_EXCHANGE_POINTER_WINDOWS_H_ 36