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#ifndef BASE_PORT_H_ 6#define BASE_PORT_H_ 7#pragma once 8 9#include <stdarg.h> 10#include "build/build_config.h" 11 12#ifdef COMPILER_MSVC 13#define GG_LONGLONG(x) x##I64 14#define GG_ULONGLONG(x) x##UI64 15#else 16#define GG_LONGLONG(x) x##LL 17#define GG_ULONGLONG(x) x##ULL 18#endif 19 20// Per C99 7.8.14, define __STDC_CONSTANT_MACROS before including <stdint.h> 21// to get the INTn_C and UINTn_C macros for integer constants. It's difficult 22// to guarantee any specific ordering of header includes, so it's difficult to 23// guarantee that the INTn_C macros can be defined by including <stdint.h> at 24// any specific point. Provide GG_INTn_C macros instead. 25 26#define GG_INT8_C(x) (x) 27#define GG_INT16_C(x) (x) 28#define GG_INT32_C(x) (x) 29#define GG_INT64_C(x) GG_LONGLONG(x) 30 31#define GG_UINT8_C(x) (x ## U) 32#define GG_UINT16_C(x) (x ## U) 33#define GG_UINT32_C(x) (x ## U) 34#define GG_UINT64_C(x) GG_ULONGLONG(x) 35 36// It's possible for functions that use a va_list, such as StringPrintf, to 37// invalidate the data in it upon use. The fix is to make a copy of the 38// structure before using it and use that copy instead. va_copy is provided 39// for this purpose. MSVC does not provide va_copy, so define an 40// implementation here. It is not guaranteed that assignment is a copy, so the 41// StringUtil.VariableArgsFunc unit test tests this capability. 42#if defined(COMPILER_GCC) 43#define GG_VA_COPY(a, b) (va_copy(a, b)) 44#elif defined(COMPILER_MSVC) 45#define GG_VA_COPY(a, b) (a = b) 46#endif 47 48// Define an OS-neutral wrapper for shared library entry points 49#if defined(OS_WIN) 50#define API_CALL __stdcall 51#else 52#define API_CALL 53#endif 54 55#endif // BASE_PORT_H_ 56