mirror of
https://github.com/matrix-construct/construct
synced 2024-11-25 16:22:35 +01:00
101 lines
2.7 KiB
C++
101 lines
2.7 KiB
C++
// Matrix Construct
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//
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// Copyright (C) Matrix Construct Developers, Authors & Contributors
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// Copyright (C) 2016-2018 Jason Volk <jason@zemos.net>
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//
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// Permission to use, copy, modify, and/or distribute this software for any
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// purpose with or without fee is hereby granted, provided that the above
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// copyright notice and this permission notice is present in all copies. The
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// full license for this software is available in the LICENSE file.
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//
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// Portability Macros & Developer Tools
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//
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#define HAVE_IRCD_PORTABLE_H
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//
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// For non-clang
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//
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#ifndef __has_builtin
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#define __has_builtin(x) 0
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#endif
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#ifndef __is_identifier
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#define __is_identifier(x) 0
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#endif
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//
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// Common branch prediction macros
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//
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#ifndef likely
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#define likely(x) __builtin_expect(!!(x), 1)
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#endif
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#ifndef unlikely
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#define unlikely(x) __builtin_expect(!!(x), 0)
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#endif
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//
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// 128 bit integer support
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//
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#if !defined(HAVE_INT128_T) || !defined(HAVE_UINT128_T)
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namespace ircd
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{
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#if defined(HAVE___INT128_T) && defined(HAVE__UINT128_T)
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using int128_t = __int128_t;
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using uint128_t = __uint128_t;
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#elif defined(HAVE___INT128)
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using int128_t = signed __int128;
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using uint128_t = unsigned __int128;
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#else
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#error "Missing 128 bit integer types on this platform."
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#endif
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}
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#endif
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//
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// Trouble; FreeBSD unsigned long ctype
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//
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#if defined(__FreeBSD__) && !defined(ulong)
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typedef u_long ulong;
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#endif
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///TODO: XXX hoist lfence out of unlikely target block
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#if defined(RB_ASSERT) && defined(RB_ASSERT_INTRINSIC) && !defined(NDEBUG) && defined(__SSE2__)
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#undef assert
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#ifdef __clang__
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#define assert(expr) \
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({ \
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if(unlikely(!static_cast<bool>(expr))) \
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{ \
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asm volatile ("lfence"); \
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__assert_fail(#expr, __FILE__, __LINE__, __FUNCTION__); \
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} \
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})
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#else
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#define assert(expr) \
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({ \
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if(unlikely(!static_cast<bool>(expr))) \
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__assert_fail(#expr, __FILE__, __LINE__, __FUNCTION__); \
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})
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#endif
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#endif
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//
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// Trouble; clang w/ our custom assert
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//
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#if defined(RB_ASSERT) && defined(__clang__) && !defined(assert)
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#ifdef NDEBUG
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#define assert(expr) \
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(static_cast<void>(0))
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#else
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#define assert(expr) \
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(static_cast<bool>(expr)? void(0): __assert_fail(#expr, __FILE__, __LINE__, __FUNCTION__))
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#endif
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#endif
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