mirror of https://github.com/axmolengine/axmol.git
203 lines
6.2 KiB
C++
203 lines
6.2 KiB
C++
//////////////////////////////////////////////////////////////////////////////////////////
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// A multi-platform support c++11 library with focus on asynchronous socket I/O for any
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// client application.
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//////////////////////////////////////////////////////////////////////////////////////////
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/*
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The MIT License (MIT)
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Copyright (c) 2012-2022 HALX99
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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*/
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#ifndef YASIO__FEATURE_TEST_HPP
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#define YASIO__FEATURE_TEST_HPP
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// Tests whether compiler has fully c++11 support
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// About preprocessor '_MSC_VER', please see:
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// https://docs.microsoft.com/en-us/cpp/preprocessor/predefined-macros?view=vs-2019
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#if defined(_MSC_VER)
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# if _MSC_VER < 1900
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# define noexcept throw()
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# define YASIO__HAS_FULL_CXX11 0
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# else
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# define YASIO__HAS_FULL_CXX11 1
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# if _MSC_VER > 1900 // VS2017 or later
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# include <vcruntime.h>
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# include <sdkddkver.h>
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# endif
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# endif
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#else
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# define YASIO__HAS_FULL_CXX11 1
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#endif
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// Tests whether compiler has c++14 support
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#if (defined(__cplusplus) && __cplusplus >= 201402L) || (defined(_MSC_VER) && _MSC_VER >= 1900 && (defined(_MSVC_LANG) && (_MSVC_LANG >= 201402L)))
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# ifndef YASIO_HAS_CXX14
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# define YASIO__HAS_CXX14 1
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# endif // C++14 features macro
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#endif // C++14 features check
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#if !defined(YASIO__HAS_CXX14)
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# define YASIO__HAS_CXX14 0
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#endif
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// Tests whether compiler has c++17 support
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#if (defined(__cplusplus) && __cplusplus >= 201703L) || \
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(defined(_MSC_VER) && _MSC_VER > 1900 && ((defined(_HAS_CXX17) && _HAS_CXX17 == 1) || (defined(_MSVC_LANG) && (_MSVC_LANG > 201402L))))
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# ifndef YASIO_HAS_CXX17
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# define YASIO__HAS_CXX17 1
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# endif // C++17 features macro
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#endif // C++17 features check
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#if !defined(YASIO__HAS_CXX17)
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# define YASIO__HAS_CXX17 0
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#endif
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// Tests whether compiler has c++20 support
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#if (defined(__cplusplus) && __cplusplus > 201703L) || \
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(defined(_MSC_VER) && _MSC_VER > 1900 && ((defined(_HAS_CXX20) && _HAS_CXX20 == 1) || (defined(_MSVC_LANG) && (_MSVC_LANG > 201703L))))
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# ifndef YASIO__HAS_CXX20
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# define YASIO__HAS_CXX20 1
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# endif // C++20 features macro
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#endif // C++20 features check
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#if !defined(YASIO__HAS_CXX20)
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# define YASIO__HAS_CXX20 0
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#endif
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// Workaround for compiler without fully c++11 support, such as vs2013
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#if YASIO__HAS_FULL_CXX11
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# define YASIO__HAS_NS_INLINE 1
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# define YASIO__NS_INLINE inline
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#else
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# define YASIO__HAS_NS_INLINE 0
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# define YASIO__NS_INLINE
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# if defined(constexpr)
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# undef constexpr
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# endif
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# define constexpr const
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#endif
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// Unix domain socket feature test
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#if !defined(_WIN32) || defined(NTDDI_WIN10_RS5)
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# define YASIO__HAS_UDS 1
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#else
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# define YASIO__HAS_UDS 0
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#endif
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// Tests whether current OS support route client io event in kernel for udp server
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#if defined(_WIN32)
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# define YASIO__UDP_KROUTE 0
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#else
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# define YASIO__UDP_KROUTE 1
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#endif
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// Tests whether current OS is BSD-like system for process common BSD socket behaviors
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#if !defined(_WIN32) && !defined(__linux__)
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# include <sys/param.h>
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# if defined(BSD) || defined(__APPLE__) || defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__bsdi__) || defined(__DragonFly__)
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# define YASIO__OS_BSD_LIKE 1
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# else
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# define YASIO__OS_BSD_LIKE 0
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# endif
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#else
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# define YASIO__OS_BSD_LIKE 0
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#endif
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// Test whether sockaddr has member 'sa_len'
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// see also: https://github.com/freebsd/freebsd-src/blob/main/sys/sys/socket.h#L329
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#if YASIO__OS_BSD_LIKE
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# define YASIO__HAS_SA_LEN 1
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#else
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# define YASIO__HAS_SA_LEN 0
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#endif
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#if !defined(_WIN32) || defined(NTDDI_VISTA)
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# define YASIO__HAS_NTOP 1
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#else
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# define YASIO__HAS_NTOP 0
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#endif
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// 64bits Sense Macros
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#if defined(_M_X64) || defined(_WIN64) || defined(__LP64__) || defined(_LP64) || defined(__x86_64) || defined(__arm64__) || defined(__aarch64__)
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# define YASIO__64BITS 1
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#else
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# define YASIO__64BITS 0
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#endif
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// Try detect compiler exceptions
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#if !defined(__cpp_exceptions)
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# define YASIO__NO_EXCEPTIONS 1
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#endif
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#if !defined(YASIO__NO_EXCEPTIONS)
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# define YASIO__THROW(x, retval) throw(x)
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# define YASIO__THROW0(x) throw(x)
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#else
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# define YASIO__THROW(x, retval) return (retval)
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# define YASIO__THROW0(x) return
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#endif
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// Compatibility with non-clang compilers...
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#ifndef __has_attribute
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# define __has_attribute(x) 0
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#endif
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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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/*
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* Helps the compiler's optimizer predicting branches
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*/
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#if __has_builtin(__builtin_expect)
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# ifdef __cplusplus
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# define yasio__likely(exp) (__builtin_expect(!!(exp), true))
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# define yasio__unlikely(exp) (__builtin_expect(!!(exp), false))
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# else
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# define yasio__likely(exp) (__builtin_expect(!!(exp), 1))
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# define yasio__unlikely(exp) (__builtin_expect(!!(exp), 0))
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# endif
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#else
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# define yasio__likely(exp) (!!(exp))
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# define yasio__unlikely(exp) (!!(exp))
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#endif
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#ifdef __GNUC__
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# define YASIO__UNUSED __attribute__((unused))
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#else
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# define YASIO__UNUSED
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#endif
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#define YASIO__UNUSED_PARAM(param) (void)param
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#define YASIO__STD ::std::
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#if YASIO__HAS_CXX14
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namespace cxx14
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{
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using namespace std;
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};
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#endif
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#if YASIO__HAS_CXX17
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namespace cxx17
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{
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using namespace std;
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};
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#endif
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#endif
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