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construct/include/ircd/portable.h

80 lines
1.7 KiB
C++

// Matrix Construct
//
// Copyright (C) Matrix Construct Developers, Authors & Contributors
// Copyright (C) 2016-2018 Jason Volk <jason@zemos.net>
//
// Permission to use, copy, modify, and/or distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice is present in all copies. The
// full license for this software is available in the LICENSE file.
//
// Portability Macros & Developer Tools
//
#define HAVE_IRCD_PORTABLE_H
//
// For non-clang
//
#ifndef __has_builtin
#define __has_builtin(x) 0
#endif
#ifndef __is_identifier
#define __is_identifier(x) 0
#endif
//
// Common branch prediction macros
//
#ifndef likely
#define likely(x) __builtin_expect(!!(x), 1)
#endif
#ifndef unlikely
#define unlikely(x) __builtin_expect(!!(x), 0)
#endif
//
// 128 bit integer support
//
#if !defined(HAVE_INT128_T) || !defined(HAVE_UINT128_T)
namespace ircd
{
#if defined(HAVE___INT128_T) && defined(HAVE__UINT128_T)
using int128_t = __int128_t;
using uint128_t = __uint128_t;
#elif defined(HAVE___INT128)
using int128_t = signed __int128;
using uint128_t = unsigned __int128;
#else
#error "Missing 128 bit integer types on this platform."
#endif
}
#endif
//
// Trouble; FreeBSD unsigned long ctype
//
#if defined(__FreeBSD__) && !defined(ulong)
typedef u_long ulong;
#endif
//
// Trouble; clang w/ our custom assert
//
#if defined(RB_ASSERT) && defined(__clang__) && !defined(assert)
#ifdef NDEBUG
#define assert(expr) \
(static_cast<void>(0))
#else
#define assert(expr) \
(static_cast<bool>(expr)? void(0): __assert_fail(#expr, __FILE__, __LINE__, __FUNCTION__))
#endif
#endif