mirror of
https://github.com/zerotier/ZeroTierOne.git
synced 2025-04-25 16:36:54 +02:00
215 lines
5.3 KiB
C++
215 lines
5.3 KiB
C++
/*
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* Copyright (c)2013-2020 ZeroTier, Inc.
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*
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* Use of this software is governed by the Business Source License included
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* in the LICENSE.TXT file in the project's root directory.
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*
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* Change Date: 2024-01-01
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*
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* On the date above, in accordance with the Business Source License, use
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* of this software will be governed by version 2.0 of the Apache License.
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*/
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/****/
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// This include file uses various macros and other tricks to auto-detect, define, and
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// canonicalize a bunch of macros and types used throughout the ZeroTier core.
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#ifndef ZT_OS_HPP
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#define ZT_OS_HPP
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#include <stdint.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdio.h>
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#if defined(_WIN32) || defined(_WIN64)
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#ifdef _MSC_VER
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#pragma warning(disable : 4290)
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#pragma warning(disable : 4996)
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#pragma warning(disable : 4101)
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#endif
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#ifndef __WINDOWS__
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#define __WINDOWS__ 1
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#endif
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#ifndef NOMINMAX
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#define NOMINMAX
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#endif
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#undef __UNIX_LIKE__
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#undef __BSD__
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#include <WinSock2.h>
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#include <Windows.h>
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#include <sys/param.h>
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#endif
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#ifdef SOCKET
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#define ZT_SOCKET SOCKET
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#else
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#define ZT_SOCKET int
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#endif
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#ifdef INVALID_SOCKET
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#define ZT_INVALID_SOCKET INVALID_SOCKET
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#else
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#define ZT_INVALID_SOCKET (-1)
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#endif
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#if !defined(__GNUC__) && (defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_1) || defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_2) || defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_4) || defined(__INTEL_COMPILER) || defined(__clang__))
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#define __GNUC__ 3
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#endif
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#ifdef __cplusplus
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#if __cplusplus > 199711L
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#include <atomic>
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#ifndef __CPP11__
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#define __CPP11__
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#endif
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#endif
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#ifndef __CPP11__
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// Beyond that defining nullptr, constexpr, and noexcept should allow us to still build on these. So far we've
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// avoided deeper C++11 features like lambdas in the core until we're 100% sure all the ancient targets are gone.
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#error TODO: to build on pre-c++11 compilers we will need to make a subset of std::atomic for integers
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#define nullptr (0)
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#define constexpr ZT_INLINE
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#define noexcept throw()
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#endif
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#endif
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#ifdef __GNUC__
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#ifndef ZT_DEBUG
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#ifdef __clang__
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#define ZT_INLINE __attribute__((always_inline)) inline
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#else
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#define ZT_INLINE inline
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#endif
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#endif
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#ifndef restrict
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#define restrict __restrict__
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#endif
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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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#else /* not GCC-like */
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#ifndef restrict
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#define restrict
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#endif
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#ifndef likely
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#define likely(x) (x)
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#endif
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#ifndef unlikely
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#define unlikely(x) (x)
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#endif
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#endif
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#if (defined(__amd64) || defined(__amd64__) || defined(__x86_64) || defined(__x86_64__) || defined(__AMD64) || defined(__AMD64__) || defined(_M_X64))
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#define ZT_ARCH_X64 1
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#include <xmmintrin.h>
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#include <emmintrin.h>
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#include <immintrin.h>
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#include <mmintrin.h>
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#endif
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#if defined(ZT_ARCH_X64) || defined(i386) || defined(__i386) || defined(__i386__) || defined(__i486__) || defined(__i586__) || defined(__i686__) || defined(_M_IX86) || defined(__X86__) || defined(_X86_) || defined(__I86__) || defined(__INTEL__) || defined(__386)
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#define ZT_ARCH_X86 1
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#endif
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#if !defined(ZT_ARCH_X86)
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#ifndef ZT_NO_UNALIGNED_ACCESS
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#define ZT_NO_UNALIGNED_ACCESS 1
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#endif
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#endif
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#if defined(__SIZEOF_INT128__) || ((defined(ZT_ARCH_X64) || defined(__aarch64__)) && defined(__GNUC__))
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#ifdef __SIZEOF_INT128__
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#define ZT_HAVE_UINT128 1
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typedef unsigned __int128 uint128_t;
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#else
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#define ZT_HAVE_UINT128 1
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typedef unsigned uint128_t __attribute__((mode(TI)));
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#endif
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#endif
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#if defined(__linux__) || defined(linux) || defined(__LINUX__) || defined(__linux)
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#ifndef __LINUX__
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#define __LINUX__ 1
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#endif
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#ifndef __UNIX_LIKE__
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#define __UNIX_LIKE__ 1
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#endif
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#include <endian.h>
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#endif
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#ifdef __APPLE__
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#include <TargetConditionals.h>
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#include <machine/endian.h>
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#ifndef __UNIX_LIKE__
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#define __UNIX_LIKE__ 1
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#endif
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#ifndef __BSD__
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#define __BSD__ 1
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#endif
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#ifndef __BYTE_ORDER
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#define __BYTE_ORDER __DARWIN_BYTE_ORDER
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#define __BIG_ENDIAN __DARWIN_BIG_ENDIAN
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#define __LITTLE_ENDIAN __DARWIN_LITTLE_ENDIAN
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#endif
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#endif
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#if defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__NetBSD__)
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#ifndef __UNIX_LIKE__
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#define __UNIX_LIKE__ 1
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#endif
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#ifndef __BSD__
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#define __BSD__ 1
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#endif
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#include <sys/endian.h>
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#ifndef RTF_MULTICAST
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#define RTF_MULTICAST 0x20000000
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#endif
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#endif
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#ifdef __WINDOWS__
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#define ZT_PATH_SEPARATOR '\\'
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#define ZT_PATH_SEPARATOR_S "\\"
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#define ZT_EOL_S "\r\n"
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#else
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#define ZT_PATH_SEPARATOR '/'
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#define ZT_PATH_SEPARATOR_S "/"
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#define ZT_EOL_S "\n"
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#endif
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#if !defined(__BYTE_ORDER) && defined(__BYTE_ORDER__)
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#define __BYTE_ORDER __BYTE_ORDER__
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#define __LITTLE_ENDIAN __ORDER_LITTLE_ENDIAN__
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#define __BIG_ENDIAN __ORDER_BIG_ENDIAN__
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#endif
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#if !defined(__BYTE_ORDER) && defined(BYTE_ORDER)
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#define __BYTE_ORDER BYTE_ORDER
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#define __LITTLE_ENDIAN LITTLE_ENDIAN
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#define __BIG_ENDIAN BIG_ENDIAN
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#endif
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#if !defined(__BYTE_ORDER) && defined(_BYTE_ORDER)
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#define __BYTE_ORDER _BYTE_ORDER
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#define __LITTLE_ENDIAN _LITTLE_ENDIAN
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#define __BIG_ENDIAN _BIG_ENDIAN
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#endif
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#ifndef ZT_INLINE
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#ifdef ZT_DEBUG
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#define ZT_INLINE
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#else
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#define ZT_INLINE inline
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#endif
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#endif
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// Macro to print very verbose tracing information to standard error.
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#define ZT_VA_ARGS(...) , ##__VA_ARGS__
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#define ZT_DEBUG_SPEW
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#ifdef ZT_DEBUG_SPEW
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#define ZT_SPEW(f,...) fprintf(stderr,"%s:%d(%s): " f ZT_EOL_S,__FILE__,__LINE__,__FUNCTION__ ZT_VA_ARGS(__VA_ARGS__))
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#else
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#define ZT_SPEW(f,...)
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#endif
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#endif
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