1 /* 2 * Copyright (c) 2013 The WebRTC project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 // Various inline functions and macros to fix compilation of 32 bit target 12 // on MSVC with /Wp64 flag enabled. 13 14 // The original code can be found here: 15 // http://src.chromium.org/svn/trunk/src/base/fix_wp64.h 16 17 #ifndef WEBRTC_SYSTEM_WRAPPERS_SOURCE_FIX_INTERLOCKED_EXCHANGE_POINTER_WINDOWS_H_ 18 #define WEBRTC_SYSTEM_WRAPPERS_SOURCE_FIX_INTERLOCKED_EXCHANGE_POINTER_WINDOWS_H_ 19 20 #include <windows.h> 21 22 // Platform SDK fixes when building with /Wp64 for a 32 bits target. 23 #if !defined(_WIN64) && defined(_Wp64) 24 25 #ifdef InterlockedExchangePointer 26 #undef InterlockedExchangePointer 27 // The problem is that the macro provided for InterlockedExchangePointer() is 28 // doing a (LONG) C-style cast that triggers invariably the warning C4312 when 29 // building on 32 bits. 30 inline void* InterlockedExchangePointer(void* volatile* target, void* value) { 31 return reinterpret_cast<void*>(static_cast<LONG_PTR>(InterlockedExchange( 32 reinterpret_cast<volatile LONG*>(target), 33 static_cast<LONG>(reinterpret_cast<LONG_PTR>(value))))); 34 } 35 #endif // #ifdef InterlockedExchangePointer 36 37 #endif // #if !defined(_WIN64) && defined(_Wp64) 38 39 #endif // WEBRTC_SYSTEM_WRAPPERS_SOURCE_FIX_INTERLOCKED_EXCHANGE_POINTER_WINDOWS_H_ 40
