mirror of
https://github.com/zerotier/ZeroTierOne.git
synced 2025-04-25 16:36:54 +02:00
175 lines
4 KiB
C++
175 lines
4 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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#ifndef ZT_OS_HPP
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#define ZT_OS_HPP
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//
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// This include file also auto-detects and canonicalizes some environment
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// information defines:
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//
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// __LINUX__
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// __APPLE__
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// __BSD__ (OSX also defines this)
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// __UNIX_LIKE__ (Linux, BSD, etc.)
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// __WINDOWS__
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//
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// Also makes sure __BYTE_ORDER is defined reasonably.
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//
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#ifndef __GCC__
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#if 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 __GCC__
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#endif
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#endif
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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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#if defined(_WIN32) || defined(_WIN64)
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#ifndef __WINDOWS__
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#define __WINDOWS__
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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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#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__
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#endif
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#ifndef __UNIX_LIKE__
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#define __UNIX_LIKE__
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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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#ifndef __UNIX_LIKE__
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#define __UNIX_LIKE__
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#endif
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#ifndef __BSD__
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#define __BSD__
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#endif
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#include <machine/endian.h>
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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__
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#endif
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#ifndef __BSD__
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#define __BSD__
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#endif
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#include <sys/endian.h>
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#ifndef __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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#endif
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#ifdef __NetBSD__
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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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// Avoid unaligned type casts on all but x86/x64 architecture.
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#if (!(defined(__amd64__) || defined(__amd64) || defined(__x86_64__) || defined(__x86_64) || defined(_M_AMD64) || defined(_M_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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#ifndef ZT_NO_UNALIGNED_ACCESS
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#define ZT_NO_UNALIGNED_ACCESS
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#endif
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#endif
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// Assume little endian if not defined on Mac and Windows as these don't run on any BE architectures.
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#if (defined(__APPLE__) || defined(__WINDOWS__)) && (!defined(__BYTE_ORDER))
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#undef __BYTE_ORDER
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#undef __LITTLE_ENDIAN
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#undef __BIG_ENDIAN
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#define __BIG_ENDIAN 4321
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#define __LITTLE_ENDIAN 1234
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#define __BYTE_ORDER 1234
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#endif
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#ifndef __BYTE_ORDER
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#include <endian.h>
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#endif
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#if (defined(__GNUC__) && (__GNUC__ >= 3)) || (defined(__INTEL_COMPILER) && (__INTEL_COMPILER >= 800)) || defined(__clang__)
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#define ZT_ALWAYS_INLINE __attribute__((always_inline)) inline
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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 inline inline
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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 __cplusplus > 199711L
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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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#define nullptr (0)
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#define constexpr ZT_ALWAYS_INLINE
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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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#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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#ifndef ZT_ALWAYS_INLINE
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#define ZT_ALWAYS_INLINE inline
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#endif
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#endif
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