1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ 2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */ 3 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved. 4 // Use of this source code is governed by a BSD-style license that can be 5 // found in the LICENSE file. 6 7 #ifndef BASE_PORT_H_ 8 #define BASE_PORT_H_ 9 10 #include <stdarg.h> 11 #include "build/build_config.h" 12 13 #ifdef COMPILER_MSVC 14 #define GG_LONGLONG(x) x##I64 15 #define GG_ULONGLONG(x) x##UI64 16 #else 17 #define GG_LONGLONG(x) x##LL 18 #define GG_ULONGLONG(x) x##ULL 19 #endif 20 21 // Per C99 7.8.14, define __STDC_CONSTANT_MACROS before including <stdint.h> 22 // to get the INTn_C and UINTn_C macros for integer constants. It's difficult 23 // to guarantee any specific ordering of header includes, so it's difficult to 24 // guarantee that the INTn_C macros can be defined by including <stdint.h> at 25 // any specific point. Provide GG_INTn_C macros instead. 26 27 #define GG_INT8_C(x) (x) 28 #define GG_INT16_C(x) (x) 29 #define GG_INT32_C(x) (x) 30 #define GG_INT64_C(x) GG_LONGLONG(x) 31 32 #define GG_UINT8_C(x) (x ## U) 33 #define GG_UINT16_C(x) (x ## U) 34 #define GG_UINT32_C(x) (x ## U) 35 #define GG_UINT64_C(x) GG_ULONGLONG(x) 36 37 namespace base { 38 39 // It's possible for functions that use a va_list, such as StringPrintf, to 40 // invalidate the data in it upon use. The fix is to make a copy of the 41 // structure before using it and use that copy instead. va_copy is provided 42 // for this purpose. MSVC does not provide va_copy, so define an 43 // implementation here. It is not guaranteed that assignment is a copy, so the 44 // StringUtil.VariableArgsFunc unit test tests this capability. 45 46 // The C standard says that va_copy is a "macro", not a function. Trying to 47 // use va_list as ref args to a function, as above, breaks some machines. 48 # if defined(COMPILER_GCC) 49 # define base_va_copy(_a, _b) ::va_copy(_a, _b) 50 # elif defined(COMPILER_MSVC) 51 # define base_va_copy(_a, _b) (_a = _b) 52 # else 53 # error No va_copy for your compiler 54 # endif 55 56 } // namespace base 57 58 // Define an OS-neutral wrapper for shared library entry points 59 #if defined(OS_WIN) 60 #define API_CALL __stdcall 61 #elif defined(OS_LINUX) || defined(OS_MACOSX) 62 #define API_CALL 63 #endif 64 65 #endif // BASE_PORT_H_ 66