|  | // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved. | 
|  | // Use of this source code is governed by a BSD-style license that can be | 
|  | // found in the LICENSE file. | 
|  |  | 
|  | #ifndef BASE_PORT_H_ | 
|  | #define BASE_PORT_H_ | 
|  |  | 
|  | #include <stdarg.h> | 
|  | #include "build/build_config.h" | 
|  |  | 
|  | // DEPRECATED: Use ...LL and ...ULL suffixes. | 
|  | // TODO(viettrungluu): Delete these. These are only here until |GG_(U)INT64_C| | 
|  | // are deleted (some other header files (re)define |GG_(U)INT64_C|, so our | 
|  | // definitions of them must exactly match theirs). | 
|  | #ifdef COMPILER_MSVC | 
|  | #define GG_LONGLONG(x) x##I64 | 
|  | #define GG_ULONGLONG(x) x##UI64 | 
|  | #else | 
|  | #define GG_LONGLONG(x) x##LL | 
|  | #define GG_ULONGLONG(x) x##ULL | 
|  | #endif | 
|  |  | 
|  | // DEPRECATED: In Chromium, we force-define __STDC_CONSTANT_MACROS, so you can | 
|  | // just use the regular (U)INTn_C macros from <stdint.h>. | 
|  | // TODO(viettrungluu): Remove the remaining GG_(U)INTn_C macros. | 
|  | #define GG_INT64_C(x)   GG_LONGLONG(x) | 
|  | #define GG_UINT64_C(x)  GG_ULONGLONG(x) | 
|  |  | 
|  | // It's possible for functions that use a va_list, such as StringPrintf, to | 
|  | // invalidate the data in it upon use.  The fix is to make a copy of the | 
|  | // structure before using it and use that copy instead.  va_copy is provided | 
|  | // for this purpose.  MSVC does not provide va_copy, so define an | 
|  | // implementation here.  It is not guaranteed that assignment is a copy, so the | 
|  | // StringUtil.VariableArgsFunc unit test tests this capability. | 
|  | #if defined(COMPILER_GCC) | 
|  | #define GG_VA_COPY(a, b) (va_copy(a, b)) | 
|  | #elif defined(COMPILER_MSVC) | 
|  | #define GG_VA_COPY(a, b) (a = b) | 
|  | #endif | 
|  |  | 
|  | // Define an OS-neutral wrapper for shared library entry points | 
|  | #if defined(OS_WIN) | 
|  | #define API_CALL __stdcall | 
|  | #else | 
|  | #define API_CALL | 
|  | #endif | 
|  |  | 
|  | #endif  // BASE_PORT_H_ |