port.h - mozsearch

Enable keyboard shortcuts

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

/* vim: set ts=8 sts=2 et sw=2 tw=80: */

// 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>

#ifdef _MSC_VER

#  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

// Per C99 7.8.14, define __STDC_CONSTANT_MACROS before including <stdint.h>

// to get the INTn_C and UINTn_C macros for integer constants.  It's difficult

// to guarantee any specific ordering of header includes, so it's difficult to

// guarantee that the INTn_C macros can be defined by including <stdint.h> at

// any specific point.  Provide GG_INTn_C macros instead.

#define GG_INT8_C(x) (x)

#define GG_INT16_C(x) (x)

#define GG_INT32_C(x) (x)

#define GG_INT64_C(x) GG_LONGLONG(x)

#define GG_UINT8_C(x) (x##U)

#define GG_UINT16_C(x) (x##U)

#define GG_UINT32_C(x) (x##U)

#define GG_UINT64_C(x) GG_ULONGLONG(x)

namespace base {

// 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.

// The C standard says that va_copy is a "macro", not a function.  Trying to

// use va_list as ref args to a function, as above, breaks some machines.

#if defined(__GNUC__)

#  define base_va_copy(_a, _b) ::va_copy(_a, _b)

#elif defined(_MSC_VER)

#  define base_va_copy(_a, _b) (_a = _b)

#else

#  error No va_copy for your compiler

#endif

}  // namespace base

// Define an OS-neutral wrapper for shared library entry points

#if defined(XP_WIN)

#  define API_CALL __stdcall

#elif defined(XP_LINUX) || defined(XP_DARWIN)

#  define API_CALL

#endif

#endif  // BASE_PORT_H_