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      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.
      4 
      5 // Various inline functions and macros to fix compilation of 32 bit target
      6 // on MSVC with /Wp64 flag enabled.
      7 
      8 #ifndef BASE_FIX_WP64_H__
      9 #define BASE_FIX_WP64_H__
     10 
     11 #include <windows.h>
     12 
     13 // Platform SDK fixes when building with /Wp64 for a 32 bits target.
     14 #if !defined(_WIN64) && defined(_Wp64)
     15 
     16 #ifdef InterlockedExchangePointer
     17 #undef InterlockedExchangePointer
     18 // The problem is that the macro provided for InterlockedExchangePointer() is
     19 // doing a (LONG) C-style cast that triggers invariably the warning C4312 when
     20 // building on 32 bits.
     21 inline void* InterlockedExchangePointer(void* volatile* target, void* value) {
     22   return reinterpret_cast<void*>(static_cast<LONG_PTR>(InterlockedExchange(
     23       reinterpret_cast<volatile LONG*>(target),
     24       static_cast<LONG>(reinterpret_cast<LONG_PTR>(value)))));
     25 }
     26 #endif  // #ifdef InterlockedExchangePointer
     27 
     28 #ifdef SetWindowLongPtrA
     29 #undef SetWindowLongPtrA
     30 // When build on 32 bits, SetWindowLongPtrX() is a macro that redirects to
     31 // SetWindowLongX(). The problem is that this function takes a LONG argument
     32 // instead of a LONG_PTR.
     33 inline LONG_PTR SetWindowLongPtrA(HWND window, int index, LONG_PTR new_long) {
     34   return ::SetWindowLongA(window, index, static_cast<LONG>(new_long));
     35 }
     36 #endif  // #ifdef SetWindowLongPtrA
     37 
     38 #ifdef SetWindowLongPtrW
     39 #undef SetWindowLongPtrW
     40 inline LONG_PTR SetWindowLongPtrW(HWND window, int index, LONG_PTR new_long) {
     41   return ::SetWindowLongW(window, index, static_cast<LONG>(new_long));
     42 }
     43 #endif  // #ifdef SetWindowLongPtrW
     44 
     45 #ifdef GetWindowLongPtrA
     46 #undef GetWindowLongPtrA
     47 inline LONG_PTR GetWindowLongPtrA(HWND window, int index) {
     48   return ::GetWindowLongA(window, index);
     49 }
     50 #endif  // #ifdef GetWindowLongPtrA
     51 
     52 #ifdef GetWindowLongPtrW
     53 #undef GetWindowLongPtrW
     54 inline LONG_PTR GetWindowLongPtrW(HWND window, int index) {
     55   return ::GetWindowLongW(window, index);
     56 }
     57 #endif  // #ifdef GetWindowLongPtrW
     58 
     59 #ifdef SetClassLongPtrA
     60 #undef SetClassLongPtrA
     61 inline LONG_PTR SetClassLongPtrA(HWND window, int index, LONG_PTR new_long) {
     62   return ::SetClassLongA(window, index, static_cast<LONG>(new_long));
     63 }
     64 #endif  // #ifdef SetClassLongPtrA
     65 
     66 #ifdef SetClassLongPtrW
     67 #undef SetClassLongPtrW
     68 inline LONG_PTR SetClassLongPtrW(HWND window, int index, LONG_PTR new_long) {
     69   return ::SetClassLongW(window, index, static_cast<LONG>(new_long));
     70 }
     71 #endif  // #ifdef SetClassLongPtrW
     72 
     73 #endif  // #if !defined(_WIN64) && defined(_Wp64)
     74 
     75 #endif  // BASE_FIX_WP64_H__
     76