config.hpp

// Copyright (c) Lewis Baker
// Licenced under MIT license. See LICENSE.txt for details.
#ifndef CPPCORO_CONFIG_HPP_INCLUDED
#define CPPCORO_CONFIG_HPP_INCLUDED

// Compiler Detection
 
#if defined(_MSC_VER)
# define CPPCORO_COMPILER_MSVC _MSC_FULL_VER
#else
# define CPPCORO_COMPILER_MSVC 0
#endif
 
#if defined(__clang__)
# define CPPCORO_COMPILER_CLANG (__clang_major__ * 10000 + \
                                 __clang_minor__ * 100 + \
                                 __clang_patchlevel__)
#else
# define CPPCORO_COMPILER_CLANG 0
#endif
 
#if defined(__GNUC__)
# define CPPCORO_COMPILER_GCC (__GNUC__ * 10000 + \
                               __GNUC_MINOR__ * 100 + \
                               __GNUC_PATCHLEVEL__)
#else
# define CPPCORO_COMPILER_GCC 0
#endif

#if CPPCORO_COMPILER_CLANG
# if __clang_major__ >= 7
#  define CPPCORO_COMPILER_SUPPORTS_SYMMETRIC_TRANSFER 1
# endif
#endif
#ifndef CPPCORO_COMPILER_SUPPORTS_SYMMETRIC_TRANSFER
# define CPPCORO_COMPILER_SUPPORTS_SYMMETRIC_TRANSFER 0
#endif
 
#if CPPCORO_COMPILER_MSVC
# define CPPCORO_ASSUME(X) __assume(X)
#else
# define CPPCORO_ASSUME(X)
#endif
 
#if CPPCORO_COMPILER_MSVC
# define CPPCORO_NOINLINE __declspec(noinline)
#elif CPPCORO_COMPILER_CLANG || CPPCORO_COMPILER_GCC
# define CPPCORO_NOINLINE __attribute__((noinline))
#else
# define CPPCORO_NOINLINE
#endif
 
#if CPPCORO_COMPILER_MSVC
# define CPPCORO_FORCE_INLINE __forceinline
#elif CPPCORO_COMPILER_CLANG
# define CPPCORO_FORCE_INLINE __attribute__((always_inline))
#else
# define CPPCORO_FORCE_INLINE inline
#endif

// OS Detection

#ifdef __MINGW32__
#define SCOPEID_UNSPECIFIED_INIT {0}
#endif
#if defined(_WIN32_WINNT) || defined(_WIN32)
# if !defined(_WIN32_WINNT)
// Default to targeting Windows 10 if not defined.
#  define _WIN32_WINNT 0x0A00
# endif
# define CPPCORO_OS_WINNT _WIN32_WINNT
#else
# define CPPCORO_OS_WINNT 0
#endif
 
#if defined(__linux__)
# define CPPCORO_OS_LINUX 1
#else
# define CPPCORO_OS_LINUX 0
#endif

// CPU Detection

#if CPPCORO_COMPILER_MSVC
# if defined(_M_IX86)
#  define CPPCORO_CPU_X86 1
# endif
#elif CPPCORO_COMPILER_GCC || CPPCORO_COMPILER_CLANG
# if defined(__i386__)
#  define CPPCORO_CPU_X86 1
# endif
#endif
#if !defined(CPPCORO_CPU_X86)
# define CPPCORO_CPU_X86 0
#endif

#if CPPCORO_COMPILER_MSVC
# if defined(_M_X64)
#  define CPPCORO_CPU_X64 1
# endif
#elif CPPCORO_COMPILER_GCC || CPPCORO_COMPILER_CLANG
# if defined(__x86_64__)
#  define CPPCORO_CPU_X64 1
# endif
#endif
#if !defined(CPPCORO_CPU_X64)
# define CPPCORO_CPU_X64 0
#endif

#if CPPCORO_CPU_X86
# define CPPCORO_CPU_32BIT 1
#else
# define CPPCORO_CPU_32BIT 0
#endif

#if CPPCORO_CPU_X64
# define CPPCORO_CPU_64BIT 1
#else
# define CPPCORO_CPU_64BIT 0
#endif
 
#if CPPCORO_COMPILER_MSVC
# define CPPCORO_CPU_CACHE_LINE std::hardware_destructive_interference_size
#else
// On most architectures we can assume a 64-byte cache line.
# define CPPCORO_CPU_CACHE_LINE 64
#endif
 
#if CPPCORO_COMPILER_MSVC
    #if __has_include(<coroutine>)
    #include <yvals_core.h>
    #ifdef __cpp_lib_coroutine
    #define CPPCORO_COROHEADER_FOUND_AND_USABLE
    #endif
    #endif
#elif CPPCORO_COMPILER_CLANG
    # if __clang_major__ >= 14
        // clang 14 in c++-17 mode has a non-usable coroutine header
        #if __has_include(<coroutine>)
        #include <coroutine>
        #ifdef __cpp_lib_coroutine
        #define CPPCORO_COROHEADER_FOUND_AND_USABLE
        #endif
        #endif
    # else
        #if __has_include(<coroutine>)
        #define CPPCORO_COROHEADER_FOUND_AND_USABLE
        #endif
    # endif
#else
    #if __has_include(<coroutine>)
    #define CPPCORO_COROHEADER_FOUND_AND_USABLE
    #endif
#endif
 
#endif