ceph/src/boost/boost/asio/detail/config.hpp

   1 //
   2 // detail/config.hpp
   3 // ~~~~~~~~~~~~~~~~~
   4 //
   5 // Copyright (c) 2003-2019 Christopher M. Kohlhoff (chris at kohlhoff dot com)
   6 //
   7 // Distributed under the Boost Software License, Version 1.0. (See accompanying
   8 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   9 //
  10
  11 #ifndef BOOST_ASIO_DETAIL_CONFIG_HPP
  12 #define BOOST_ASIO_DETAIL_CONFIG_HPP
  13
  14 #if defined(BOOST_ASIO_STANDALONE)
  15 # define BOOST_ASIO_DISABLE_BOOST_ARRAY 1
  16 # define BOOST_ASIO_DISABLE_BOOST_ASSERT 1
  17 # define BOOST_ASIO_DISABLE_BOOST_BIND 1
  18 # define BOOST_ASIO_DISABLE_BOOST_CHRONO 1
  19 # define BOOST_ASIO_DISABLE_BOOST_DATE_TIME 1
  20 # define BOOST_ASIO_DISABLE_BOOST_LIMITS 1
  21 # define BOOST_ASIO_DISABLE_BOOST_REGEX 1
  22 # define BOOST_ASIO_DISABLE_BOOST_STATIC_CONSTANT 1
  23 # define BOOST_ASIO_DISABLE_BOOST_THROW_EXCEPTION 1
  24 # define BOOST_ASIO_DISABLE_BOOST_WORKAROUND 1
  25 #else // defined(BOOST_ASIO_STANDALONE)
  26 # include <boost/config.hpp>
  27 # include <boost/version.hpp>
  28 # define BOOST_ASIO_HAS_BOOST_CONFIG 1
  29 #endif // defined(BOOST_ASIO_STANDALONE)
  30
  31 // Default to a header-only implementation. The user must specifically request
  32 // separate compilation by defining either BOOST_ASIO_SEPARATE_COMPILATION or
  33 // BOOST_ASIO_DYN_LINK (as a DLL/shared library implies separate compilation).
  34 #if !defined(BOOST_ASIO_HEADER_ONLY)
  35 # if !defined(BOOST_ASIO_SEPARATE_COMPILATION)
  36 #  if !defined(BOOST_ASIO_DYN_LINK)
  37 #   define BOOST_ASIO_HEADER_ONLY 1
  38 #  endif // !defined(BOOST_ASIO_DYN_LINK)
  39 # endif // !defined(BOOST_ASIO_SEPARATE_COMPILATION)
  40 #endif // !defined(BOOST_ASIO_HEADER_ONLY)
  41
  42 #if defined(BOOST_ASIO_HEADER_ONLY)
  43 # define BOOST_ASIO_DECL inline
  44 #else // defined(BOOST_ASIO_HEADER_ONLY)
  45 # if defined(_MSC_VER) || defined(__BORLANDC__) || defined(__CODEGEARC__)
  46 // We need to import/export our code only if the user has specifically asked
  47 // for it by defining BOOST_ASIO_DYN_LINK.
  48 #  if defined(BOOST_ASIO_DYN_LINK)
  49 // Export if this is our own source, otherwise import.
  50 #   if defined(BOOST_ASIO_SOURCE)
  51 #    define BOOST_ASIO_DECL __declspec(dllexport)
  52 #   else // defined(BOOST_ASIO_SOURCE)
  53 #    define BOOST_ASIO_DECL __declspec(dllimport)
  54 #   endif // defined(BOOST_ASIO_SOURCE)
  55 #  endif // defined(BOOST_ASIO_DYN_LINK)
  56 # endif // defined(_MSC_VER) || defined(__BORLANDC__) || defined(__CODEGEARC__)
  57 #endif // defined(BOOST_ASIO_HEADER_ONLY)
  58
  59 // If BOOST_ASIO_DECL isn't defined yet define it now.
  60 #if !defined(BOOST_ASIO_DECL)
  61 # define BOOST_ASIO_DECL
  62 #endif // !defined(BOOST_ASIO_DECL)
  63
  64 // Microsoft Visual C++ detection.
  65 #if !defined(BOOST_ASIO_MSVC)
  66 # if defined(BOOST_ASIO_HAS_BOOST_CONFIG) && defined(BOOST_MSVC)
  67 #  define BOOST_ASIO_MSVC BOOST_MSVC
  68 # elif defined(_MSC_VER) && (defined(__INTELLISENSE__) \
  69       || (!defined(__MWERKS__) && !defined(__EDG_VERSION__)))
  70 #  define BOOST_ASIO_MSVC _MSC_VER
  71 # endif // defined(BOOST_ASIO_HAS_BOOST_CONFIG) && defined(BOOST_MSVC)
  72 #endif // !defined(BOOST_ASIO_MSVC)
  73
  74 // Clang / libc++ detection.
  75 #if defined(__clang__)
  76 # if (__cplusplus >= 201103)
  77 #  if __has_include(<__config>)
  78 #   include <__config>
  79 #   if defined(_LIBCPP_VERSION)
  80 #    define BOOST_ASIO_HAS_CLANG_LIBCXX 1
  81 #   endif // defined(_LIBCPP_VERSION)
  82 #  endif // __has_include(<__config>)
  83 # endif // (__cplusplus >= 201103)
  84 #endif // defined(__clang__)
  85
  86 // Android platform detection.
  87 #if defined(__ANDROID__)
  88 # include <android/api-level.h>
  89 #endif // defined(__ANDROID__)
  90
  91 // Support move construction and assignment on compilers known to allow it.
  92 #if !defined(BOOST_ASIO_HAS_MOVE)
  93 # if !defined(BOOST_ASIO_DISABLE_MOVE)
  94 #  if defined(__clang__)
  95 #   if __has_feature(__cxx_rvalue_references__)
  96 #    define BOOST_ASIO_HAS_MOVE 1
  97 #   endif // __has_feature(__cxx_rvalue_references__)
  98 #  endif // defined(__clang__)
  99 #  if defined(__GNUC__)
 100 #   if ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 5)) || (__GNUC__ > 4)
 101 #    if defined(__GXX_EXPERIMENTAL_CXX0X__)
 102 #     define BOOST_ASIO_HAS_MOVE 1
 103 #    endif // defined(__GXX_EXPERIMENTAL_CXX0X__)
 104 #   endif // ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 5)) || (__GNUC__ > 4)
 105 #  endif // defined(__GNUC__)
 106 #  if defined(BOOST_ASIO_MSVC)
 107 #   if (_MSC_VER >= 1700)
 108 #    define BOOST_ASIO_HAS_MOVE 1
 109 #   endif // (_MSC_VER >= 1700)
 110 #  endif // defined(BOOST_ASIO_MSVC)
 111 #  if defined(__INTEL_CXX11_MODE__)
 112 #    if defined(__INTEL_COMPILER) && (__INTEL_COMPILER >= 1500)
 113 #      define BOOST_ASIO_HAS_MOVE 1
 114 #    endif // defined(__INTEL_COMPILER) && (__INTEL_COMPILER >= 1500)
 115 #    if defined(__ICL) && (__ICL >= 1500)
 116 #      define BOOST_ASIO_HAS_MOVE 1
 117 #    endif // defined(__ICL) && (__ICL >= 1500)
 118 #  endif // defined(__INTEL_CXX11_MODE__)
 119 # endif // !defined(BOOST_ASIO_DISABLE_MOVE)
 120 #endif // !defined(BOOST_ASIO_HAS_MOVE)
 121
 122 // If BOOST_ASIO_MOVE_CAST isn't defined, and move support is available, define
 123 // * BOOST_ASIO_MOVE_ARG,
 124 // * BOOST_ASIO_NONDEDUCED_MOVE_ARG, and
 125 // * BOOST_ASIO_MOVE_CAST
 126 // to take advantage of rvalue references and perfect forwarding.
 127 #if defined(BOOST_ASIO_HAS_MOVE) && !defined(BOOST_ASIO_MOVE_CAST)
 128 # define BOOST_ASIO_MOVE_ARG(type) type&&
 129 # define BOOST_ASIO_MOVE_ARG2(type1, type2) type1, type2&&
 130 # define BOOST_ASIO_NONDEDUCED_MOVE_ARG(type) type&
 131 # define BOOST_ASIO_MOVE_CAST(type) static_cast<type&&>
 132 # define BOOST_ASIO_MOVE_CAST2(type1, type2) static_cast<type1, type2&&>
 133 #endif // defined(BOOST_ASIO_HAS_MOVE) && !defined(BOOST_ASIO_MOVE_CAST)
 134
 135 // If BOOST_ASIO_MOVE_CAST still isn't defined, default to a C++03-compatible
 136 // implementation. Note that older g++ and MSVC versions don't like it when you
 137 // pass a non-member function through a const reference, so for most compilers
 138 // we'll play it safe and stick with the old approach of passing the handler by
 139 // value.
 140 #if !defined(BOOST_ASIO_MOVE_CAST)
 141 # if defined(__GNUC__)
 142 #  if ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 1)) || (__GNUC__ > 4)
 143 #   define BOOST_ASIO_MOVE_ARG(type) const type&
 144 #  else // ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 1)) || (__GNUC__ > 4)
 145 #   define BOOST_ASIO_MOVE_ARG(type) type
 146 #  endif // ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 1)) || (__GNUC__ > 4)
 147 # elif defined(BOOST_ASIO_MSVC)
 148 #  if (_MSC_VER >= 1400)
 149 #   define BOOST_ASIO_MOVE_ARG(type) const type&
 150 #  else // (_MSC_VER >= 1400)
 151 #   define BOOST_ASIO_MOVE_ARG(type) type
 152 #  endif // (_MSC_VER >= 1400)
 153 # else
 154 #  define BOOST_ASIO_MOVE_ARG(type) type
 155 # endif
 156 # define BOOST_ASIO_NONDEDUCED_MOVE_ARG(type) const type&
 157 # define BOOST_ASIO_MOVE_CAST(type) static_cast<const type&>
 158 # define BOOST_ASIO_MOVE_CAST2(type1, type2) static_cast<const type1, type2&>
 159 #endif // !defined(BOOST_ASIO_MOVE_CAST)
 160
 161 // Support variadic templates on compilers known to allow it.
 162 #if !defined(BOOST_ASIO_HAS_VARIADIC_TEMPLATES)
 163 # if !defined(BOOST_ASIO_DISABLE_VARIADIC_TEMPLATES)
 164 #  if defined(__clang__)
 165 #   if __has_feature(__cxx_variadic_templates__)
 166 #    define BOOST_ASIO_HAS_VARIADIC_TEMPLATES 1
 167 #   endif // __has_feature(__cxx_variadic_templates__)
 168 #  endif // defined(__clang__)
 169 #  if defined(__GNUC__)
 170 #   if ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 3)) || (__GNUC__ > 4)
 171 #    if defined(__GXX_EXPERIMENTAL_CXX0X__)
 172 #     define BOOST_ASIO_HAS_VARIADIC_TEMPLATES 1
 173 #    endif // defined(__GXX_EXPERIMENTAL_CXX0X__)
 174 #   endif // ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 3)) || (__GNUC__ > 4)
 175 #  endif // defined(__GNUC__)
 176 #  if defined(BOOST_ASIO_MSVC)
 177 #   if (_MSC_VER >= 1900)
 178 #    define BOOST_ASIO_HAS_VARIADIC_TEMPLATES 1
 179 #   endif // (_MSC_VER >= 1900)
 180 #  endif // defined(BOOST_ASIO_MSVC)
 181 # endif // !defined(BOOST_ASIO_DISABLE_VARIADIC_TEMPLATES)
 182 #endif // !defined(BOOST_ASIO_HAS_VARIADIC_TEMPLATES)
 183
 184 // Support deleted functions on compilers known to allow it.
 185 #if !defined(BOOST_ASIO_DELETED)
 186 # if defined(__GNUC__)
 187 #  if ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 7)) || (__GNUC__ > 4)
 188 #   if defined(__GXX_EXPERIMENTAL_CXX0X__)
 189 #    define BOOST_ASIO_DELETED = delete
 190 #   endif // defined(__GXX_EXPERIMENTAL_CXX0X__)
 191 #  endif // ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 7)) || (__GNUC__ > 4)
 192 # endif // defined(__GNUC__)
 193 # if defined(__clang__)
 194 #  if __has_feature(__cxx_deleted_functions__)
 195 #   define BOOST_ASIO_DELETED = delete
 196 #  endif // __has_feature(__cxx_deleted_functions__)
 197 # endif // defined(__clang__)
 198 # if defined(BOOST_ASIO_MSVC)
 199 #  if (_MSC_VER >= 1900)
 200 #   define BOOST_ASIO_DELETED = delete
 201 #  endif // (_MSC_VER >= 1900)
 202 # endif // defined(BOOST_ASIO_MSVC)
 203 # if !defined(BOOST_ASIO_DELETED)
 204 #  define BOOST_ASIO_DELETED
 205 # endif // !defined(BOOST_ASIO_DELETED)
 206 #endif // !defined(BOOST_ASIO_DELETED)
 207
 208 // Support constexpr on compilers known to allow it.
 209 #if !defined(BOOST_ASIO_HAS_CONSTEXPR)
 210 # if !defined(BOOST_ASIO_DISABLE_CONSTEXPR)
 211 #  if defined(__clang__)
 212 #   if __has_feature(__cxx_constexpr__)
 213 #    define BOOST_ASIO_HAS_CONSTEXPR 1
 214 #   endif // __has_feature(__cxx_constexr__)
 215 #  endif // defined(__clang__)
 216 #  if defined(__GNUC__)
 217 #   if ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 6)) || (__GNUC__ > 4)
 218 #    if defined(__GXX_EXPERIMENTAL_CXX0X__)
 219 #     define BOOST_ASIO_HAS_CONSTEXPR 1
 220 #    endif // defined(__GXX_EXPERIMENTAL_CXX0X__)
 221 #   endif // ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 6)) || (__GNUC__ > 4)
 222 #  endif // defined(__GNUC__)
 223 #  if defined(BOOST_ASIO_MSVC)
 224 #   if (_MSC_VER >= 1900)
 225 #    define BOOST_ASIO_HAS_CONSTEXPR 1
 226 #   endif // (_MSC_VER >= 1900)
 227 #  endif // defined(BOOST_ASIO_MSVC)
 228 # endif // !defined(BOOST_ASIO_DISABLE_CONSTEXPR)
 229 #endif // !defined(BOOST_ASIO_HAS_CONSTEXPR)
 230 #if !defined(BOOST_ASIO_CONSTEXPR)
 231 # if defined(BOOST_ASIO_HAS_CONSTEXPR)
 232 #  define BOOST_ASIO_CONSTEXPR constexpr
 233 # else // defined(BOOST_ASIO_HAS_CONSTEXPR)
 234 #  define BOOST_ASIO_CONSTEXPR
 235 # endif // defined(BOOST_ASIO_HAS_CONSTEXPR)
 236 #endif // !defined(BOOST_ASIO_CONSTEXPR)
 237
 238 // Support noexcept on compilers known to allow it.
 239 #if !defined(BOOST_ASIO_NOEXCEPT)
 240 # if !defined(BOOST_ASIO_DISABLE_NOEXCEPT)
 241 #  if defined(BOOST_ASIO_HAS_BOOST_CONFIG) && (BOOST_VERSION >= 105300)
 242 #   define BOOST_ASIO_NOEXCEPT BOOST_NOEXCEPT
 243 #   define BOOST_ASIO_NOEXCEPT_OR_NOTHROW BOOST_NOEXCEPT_OR_NOTHROW
 244 #  elif defined(__clang__)
 245 #   if __has_feature(__cxx_noexcept__)
 246 #    define BOOST_ASIO_NOEXCEPT noexcept(true)
 247 #    define BOOST_ASIO_NOEXCEPT_OR_NOTHROW noexcept(true)
 248 #   endif // __has_feature(__cxx_noexcept__)
 249 #  elif defined(__GNUC__)
 250 #   if ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 7)) || (__GNUC__ > 4)
 251 #    if defined(__GXX_EXPERIMENTAL_CXX0X__)
 252 #      define BOOST_ASIO_NOEXCEPT noexcept(true)
 253 #      define BOOST_ASIO_NOEXCEPT_OR_NOTHROW noexcept(true)
 254 #    endif // defined(__GXX_EXPERIMENTAL_CXX0X__)
 255 #   endif // ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 7)) || (__GNUC__ > 4)
 256 #  elif defined(BOOST_ASIO_MSVC)
 257 #   if (_MSC_VER >= 1900)
 258 #    define BOOST_ASIO_NOEXCEPT noexcept(true)
 259 #    define BOOST_ASIO_NOEXCEPT_OR_NOTHROW noexcept(true)
 260 #   endif // (_MSC_VER >= 1900)
 261 #  endif // defined(BOOST_ASIO_MSVC)
 262 # endif // !defined(BOOST_ASIO_DISABLE_NOEXCEPT)
 263 # if !defined(BOOST_ASIO_NOEXCEPT)
 264 #  define BOOST_ASIO_NOEXCEPT
 265 # endif // !defined(BOOST_ASIO_NOEXCEPT)
 266 # if !defined(BOOST_ASIO_NOEXCEPT_OR_NOTHROW)
 267 #  define BOOST_ASIO_NOEXCEPT_OR_NOTHROW throw()
 268 # endif // !defined(BOOST_ASIO_NOEXCEPT_OR_NOTHROW)
 269 #endif // !defined(BOOST_ASIO_NOEXCEPT)
 270
 271 // Support automatic type deduction on compilers known to support it.
 272 #if !defined(BOOST_ASIO_HAS_DECLTYPE)
 273 # if !defined(BOOST_ASIO_DISABLE_DECLTYPE)
 274 #  if defined(__clang__)
 275 #   if __has_feature(__cxx_decltype__)
 276 #    define BOOST_ASIO_HAS_DECLTYPE 1
 277 #   endif // __has_feature(__cxx_decltype__)
 278 #  endif // defined(__clang__)
 279 #  if defined(__GNUC__)
 280 #   if ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 6)) || (__GNUC__ > 4)
 281 #    if defined(__GXX_EXPERIMENTAL_CXX0X__)
 282 #     define BOOST_ASIO_HAS_DECLTYPE 1
 283 #    endif // defined(__GXX_EXPERIMENTAL_CXX0X__)
 284 #   endif // ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 6)) || (__GNUC__ > 4)
 285 #  endif // defined(__GNUC__)
 286 #  if defined(BOOST_ASIO_MSVC)
 287 #   if (_MSC_VER >= 1800)
 288 #    define BOOST_ASIO_HAS_DECLTYPE 1
 289 #   endif // (_MSC_VER >= 1800)
 290 #  endif // defined(BOOST_ASIO_MSVC)
 291 # endif // !defined(BOOST_ASIO_DISABLE_DECLTYPE)
 292 #endif // !defined(BOOST_ASIO_HAS_DECLTYPE)
 293
 294 // Support alias templates on compilers known to allow it.
 295 #if !defined(BOOST_ASIO_HAS_ALIAS_TEMPLATES)
 296 # if !defined(BOOST_ASIO_DISABLE_ALIAS_TEMPLATES)
 297 #  if defined(__clang__)
 298 #   if __has_feature(__cxx_alias_templates__)
 299 #    define BOOST_ASIO_HAS_ALIAS_TEMPLATES 1
 300 #   endif // __has_feature(__cxx_alias_templates__)
 301 #  endif // defined(__clang__)
 302 #  if defined(__GNUC__)
 303 #   if ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 7)) || (__GNUC__ > 4)
 304 #    if defined(__GXX_EXPERIMENTAL_CXX0X__)
 305 #     define BOOST_ASIO_HAS_ALIAS_TEMPLATES 1
 306 #    endif // defined(__GXX_EXPERIMENTAL_CXX0X__)
 307 #   endif // ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 7)) || (__GNUC__ > 4)
 308 #  endif // defined(__GNUC__)
 309 #  if defined(BOOST_ASIO_MSVC)
 310 #   if (_MSC_VER >= 1900)
 311 #    define BOOST_ASIO_HAS_ALIAS_TEMPLATES 1
 312 #   endif // (_MSC_VER >= 1900)
 313 #  endif // defined(BOOST_ASIO_MSVC)
 314 # endif // !defined(BOOST_ASIO_DISABLE_ALIAS_TEMPLATES)
 315 #endif // !defined(BOOST_ASIO_HAS_ALIAS_TEMPLATES)
 316
 317 // Support return type deduction on compilers known to allow it.
 318 #if !defined(BOOST_ASIO_HAS_RETURN_TYPE_DEDUCTION)
 319 # if !defined(BOOST_ASIO_DISABLE_RETURN_TYPE_DEDUCTION)
 320 #  if defined(__clang__)
 321 #   if __has_feature(__cxx_return_type_deduction__)
 322 #    define BOOST_ASIO_HAS_RETURN_TYPE_DEDUCTION 1
 323 #   endif // __has_feature(__cxx_alias_templates__)
 324 #  elif (__cplusplus >= 201402)
 325 #   define BOOST_ASIO_HAS_RETURN_TYPE_DEDUCTION 1
 326 #  elif defined(__cpp_return_type_deduction)
 327 #   if (__cpp_return_type_deduction >= 201304)
 328 #    define BOOST_ASIO_HAS_RETURN_TYPE_DEDUCTION 1
 329 #   endif // (__cpp_return_type_deduction >= 201304)
 330 #  endif // defined(__cpp_return_type_deduction)
 331 # endif // !defined(BOOST_ASIO_DISABLE_RETURN_TYPE_DEDUCTION)
 332 #endif // !defined(BOOST_ASIO_HAS_RETURN_TYPE_DEDUCTION)
 333
 334 // Support default function template arguments on compilers known to allow it.
 335 #if !defined(BOOST_ASIO_HAS_DEFAULT_FUNCTION_TEMPLATE_ARGUMENTS)
 336 # if !defined(BOOST_ASIO_DISABLE_DEFAULT_FUNCTION_TEMPLATE_ARGUMENTS)
 337 #  if (__cplusplus >= 201103)
 338 #   define BOOST_ASIO_HAS_DEFAULT_FUNCTION_TEMPLATE_ARGUMENTS 1
 339 #  endif // (__cplusplus >= 201103)
 340 # endif // !defined(BOOST_ASIO_DISABLE_DEFAULT_FUNCTION_TEMPLATE_ARGUMENTS)
 341 #endif // !defined(BOOST_ASIO_HAS_DEFAULT_FUNCTION_TEMPLATE_ARGUMENTS)
 342
 343 // Support concepts on compilers known to allow them.
 344 #if !defined(BOOST_ASIO_HAS_CONCEPTS)
 345 # if !defined(BOOST_ASIO_DISABLE_CONCEPTS)
 346 #  if __cpp_concepts
 347 #   define BOOST_ASIO_HAS_CONCEPTS 1
 348 #   define BOOST_ASIO_CONCEPT concept bool
 349 #  endif // __cpp_concepts
 350 # endif // !defined(BOOST_ASIO_DISABLE_CONCEPTS)
 351 #endif // !defined(BOOST_ASIO_HAS_CONCEPTS)
 352
 353 // Standard library support for system errors.
 354 # if !defined(BOOST_ASIO_DISABLE_STD_SYSTEM_ERROR)
 355 #  if defined(__clang__)
 356 #   if defined(BOOST_ASIO_HAS_CLANG_LIBCXX)
 357 #    define BOOST_ASIO_HAS_STD_SYSTEM_ERROR 1
 358 #   elif (__cplusplus >= 201103)
 359 #    if __has_include(<system_error>)
 360 #     define BOOST_ASIO_HAS_STD_SYSTEM_ERROR 1
 361 #    endif // __has_include(<system_error>)
 362 #   endif // (__cplusplus >= 201103)
 363 #  endif // defined(__clang__)
 364 #  if defined(__GNUC__)
 365 #   if ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 6)) || (__GNUC__ > 4)
 366 #    if defined(__GXX_EXPERIMENTAL_CXX0X__)
 367 #     define BOOST_ASIO_HAS_STD_SYSTEM_ERROR 1
 368 #    endif // defined(__GXX_EXPERIMENTAL_CXX0X__)
 369 #   endif // ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 6)) || (__GNUC__ > 4)
 370 #  endif // defined(__GNUC__)
 371 #  if defined(BOOST_ASIO_MSVC)
 372 #   if (_MSC_VER >= 1700)
 373 #    define BOOST_ASIO_HAS_STD_SYSTEM_ERROR 1
 374 #   endif // (_MSC_VER >= 1700)
 375 #  endif // defined(BOOST_ASIO_MSVC)
 376 # endif // !defined(BOOST_ASIO_DISABLE_STD_SYSTEM_ERROR)
 377
 378 // Compliant C++11 compilers put noexcept specifiers on error_category members.
 379 #if !defined(BOOST_ASIO_ERROR_CATEGORY_NOEXCEPT)
 380 # if defined(BOOST_ASIO_HAS_BOOST_CONFIG) && (BOOST_VERSION >= 105300)
 381 #  define BOOST_ASIO_ERROR_CATEGORY_NOEXCEPT BOOST_NOEXCEPT
 382 # elif defined(__clang__)
 383 #  if __has_feature(__cxx_noexcept__)
 384 #   define BOOST_ASIO_ERROR_CATEGORY_NOEXCEPT noexcept(true)
 385 #  endif // __has_feature(__cxx_noexcept__)
 386 # elif defined(__GNUC__)
 387 #  if ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 7)) || (__GNUC__ > 4)
 388 #   if defined(__GXX_EXPERIMENTAL_CXX0X__)
 389 #     define BOOST_ASIO_ERROR_CATEGORY_NOEXCEPT noexcept(true)
 390 #   endif // defined(__GXX_EXPERIMENTAL_CXX0X__)
 391 #  endif // ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 7)) || (__GNUC__ > 4)
 392 # elif defined(BOOST_ASIO_MSVC)
 393 #  if (_MSC_VER >= 1900)
 394 #   define BOOST_ASIO_ERROR_CATEGORY_NOEXCEPT noexcept(true)
 395 #  endif // (_MSC_VER >= 1900)
 396 # endif // defined(BOOST_ASIO_MSVC)
 397 # if !defined(BOOST_ASIO_ERROR_CATEGORY_NOEXCEPT)
 398 #  define BOOST_ASIO_ERROR_CATEGORY_NOEXCEPT
 399 # endif // !defined(BOOST_ASIO_ERROR_CATEGORY_NOEXCEPT)
 400 #endif // !defined(BOOST_ASIO_ERROR_CATEGORY_NOEXCEPT)
 401
 402 // Standard library support for arrays.
 403 #if !defined(BOOST_ASIO_HAS_STD_ARRAY)
 404 # if !defined(BOOST_ASIO_DISABLE_STD_ARRAY)
 405 #  if defined(__clang__)
 406 #   if defined(BOOST_ASIO_HAS_CLANG_LIBCXX)
 407 #    define BOOST_ASIO_HAS_STD_ARRAY 1
 408 #   elif (__cplusplus >= 201103)
 409 #    if __has_include(<array>)
 410 #     define BOOST_ASIO_HAS_STD_ARRAY 1
 411 #    endif // __has_include(<array>)
 412 #   endif // (__cplusplus >= 201103)
 413 #  endif // defined(__clang__)
 414 #  if defined(__GNUC__)
 415 #   if ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 3)) || (__GNUC__ > 4)
 416 #    if defined(__GXX_EXPERIMENTAL_CXX0X__)
 417 #     define BOOST_ASIO_HAS_STD_ARRAY 1
 418 #    endif // defined(__GXX_EXPERIMENTAL_CXX0X__)
 419 #   endif // ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 3)) || (__GNUC__ > 4)
 420 #  endif // defined(__GNUC__)
 421 #  if defined(BOOST_ASIO_MSVC)
 422 #   if (_MSC_VER >= 1600)
 423 #    define BOOST_ASIO_HAS_STD_ARRAY 1
 424 #   endif // (_MSC_VER >= 1600)
 425 #  endif // defined(BOOST_ASIO_MSVC)
 426 # endif // !defined(BOOST_ASIO_DISABLE_STD_ARRAY)
 427 #endif // !defined(BOOST_ASIO_HAS_STD_ARRAY)
 428
 429 // Standard library support for shared_ptr and weak_ptr.
 430 #if !defined(BOOST_ASIO_HAS_STD_SHARED_PTR)
 431 # if !defined(BOOST_ASIO_DISABLE_STD_SHARED_PTR)
 432 #  if defined(__clang__)
 433 #   if defined(BOOST_ASIO_HAS_CLANG_LIBCXX)
 434 #    define BOOST_ASIO_HAS_STD_SHARED_PTR 1
 435 #   elif (__cplusplus >= 201103)
 436 #    define BOOST_ASIO_HAS_STD_SHARED_PTR 1
 437 #   endif // (__cplusplus >= 201103)
 438 #  endif // defined(__clang__)
 439 #  if defined(__GNUC__)
 440 #   if ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 3)) || (__GNUC__ > 4)
 441 #    if defined(__GXX_EXPERIMENTAL_CXX0X__)
 442 #     define BOOST_ASIO_HAS_STD_SHARED_PTR 1
 443 #    endif // defined(__GXX_EXPERIMENTAL_CXX0X__)
 444 #   endif // ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 3)) || (__GNUC__ > 4)
 445 #  endif // defined(__GNUC__)
 446 #  if defined(BOOST_ASIO_MSVC)
 447 #   if (_MSC_VER >= 1600)
 448 #    define BOOST_ASIO_HAS_STD_SHARED_PTR 1
 449 #   endif // (_MSC_VER >= 1600)
 450 #  endif // defined(BOOST_ASIO_MSVC)
 451 # endif // !defined(BOOST_ASIO_DISABLE_STD_SHARED_PTR)
 452 #endif // !defined(BOOST_ASIO_HAS_STD_SHARED_PTR)
 453
 454 // Standard library support for allocator_arg_t.
 455 #if !defined(BOOST_ASIO_HAS_STD_ALLOCATOR_ARG)
 456 # if !defined(BOOST_ASIO_DISABLE_STD_ALLOCATOR_ARG)
 457 #  if defined(__clang__)
 458 #   if defined(BOOST_ASIO_HAS_CLANG_LIBCXX)
 459 #    define BOOST_ASIO_HAS_STD_ALLOCATOR_ARG 1
 460 #   elif (__cplusplus >= 201103)
 461 #    define BOOST_ASIO_HAS_STD_ALLOCATOR_ARG 1
 462 #   endif // (__cplusplus >= 201103)
 463 #  endif // defined(__clang__)
 464 #  if defined(__GNUC__)
 465 #   if ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 6)) || (__GNUC__ > 4)
 466 #    if defined(__GXX_EXPERIMENTAL_CXX0X__)
 467 #     define BOOST_ASIO_HAS_STD_ALLOCATOR_ARG 1
 468 #    endif // defined(__GXX_EXPERIMENTAL_CXX0X__)
 469 #   endif // ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 6)) || (__GNUC__ > 4)
 470 #  endif // defined(__GNUC__)
 471 #  if defined(BOOST_ASIO_MSVC)
 472 #   if (_MSC_VER >= 1600)
 473 #    define BOOST_ASIO_HAS_STD_ALLOCATOR_ARG 1
 474 #   endif // (_MSC_VER >= 1600)
 475 #  endif // defined(BOOST_ASIO_MSVC)
 476 # endif // !defined(BOOST_ASIO_DISABLE_STD_ALLOCATOR_ARG)
 477 #endif // !defined(BOOST_ASIO_HAS_STD_ALLOCATOR_ARG)
 478
 479 // Standard library support for atomic operations.
 480 #if !defined(BOOST_ASIO_HAS_STD_ATOMIC)
 481 # if !defined(BOOST_ASIO_DISABLE_STD_ATOMIC)
 482 #  if defined(__clang__)
 483 #   if defined(BOOST_ASIO_HAS_CLANG_LIBCXX)
 484 #    define BOOST_ASIO_HAS_STD_ATOMIC 1
 485 #   elif (__cplusplus >= 201103)
 486 #    if __has_include(<atomic>)
 487 #     define BOOST_ASIO_HAS_STD_ATOMIC 1
 488 #    endif // __has_include(<atomic>)
 489 #   elif defined(__apple_build_version__) && defined(_LIBCPP_VERSION)
 490 #    if (__clang_major__ >= 10)
 491 #     if __has_include(<atomic>)
 492 #      define BOOST_ASIO_HAS_STD_ATOMIC 1
 493 #     endif // __has_include(<atomic>)
 494 #    endif // (__clang_major__ >= 10)
 495 #   endif /// defined(__apple_build_version__) && defined(_LIBCPP_VERSION)
 496 #  endif // defined(__clang__)
 497 #  if defined(__GNUC__)
 498 #   if ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 7)) || (__GNUC__ > 4)
 499 #    if defined(__GXX_EXPERIMENTAL_CXX0X__)
 500 #     define BOOST_ASIO_HAS_STD_ATOMIC 1
 501 #    endif // defined(__GXX_EXPERIMENTAL_CXX0X__)
 502 #   endif // ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 7)) || (__GNUC__ > 4)
 503 #  endif // defined(__GNUC__)
 504 #  if defined(BOOST_ASIO_MSVC)
 505 #   if (_MSC_VER >= 1700)
 506 #    define BOOST_ASIO_HAS_STD_ATOMIC 1
 507 #   endif // (_MSC_VER >= 1700)
 508 #  endif // defined(BOOST_ASIO_MSVC)
 509 # endif // !defined(BOOST_ASIO_DISABLE_STD_ATOMIC)
 510 #endif // !defined(BOOST_ASIO_HAS_STD_ATOMIC)
 511
 512 // Standard library support for chrono. Some standard libraries (such as the
 513 // libstdc++ shipped with gcc 4.6) provide monotonic_clock as per early C++0x
 514 // drafts, rather than the eventually standardised name of steady_clock.
 515 #if !defined(BOOST_ASIO_HAS_STD_CHRONO)
 516 # if !defined(BOOST_ASIO_DISABLE_STD_CHRONO)
 517 #  if defined(__clang__)
 518 #   if defined(BOOST_ASIO_HAS_CLANG_LIBCXX)
 519 #    define BOOST_ASIO_HAS_STD_CHRONO 1
 520 #   elif (__cplusplus >= 201103)
 521 #    if __has_include(<chrono>)
 522 #     define BOOST_ASIO_HAS_STD_CHRONO 1
 523 #    endif // __has_include(<chrono>)
 524 #   endif // (__cplusplus >= 201103)
 525 #  endif // defined(__clang__)
 526 #  if defined(__GNUC__)
 527 #   if ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 6)) || (__GNUC__ > 4)
 528 #    if defined(__GXX_EXPERIMENTAL_CXX0X__)
 529 #     define BOOST_ASIO_HAS_STD_CHRONO 1
 530 #     if ((__GNUC__ == 4) && (__GNUC_MINOR__ == 6))
 531 #      define BOOST_ASIO_HAS_STD_CHRONO_MONOTONIC_CLOCK 1
 532 #     endif // ((__GNUC__ == 4) && (__GNUC_MINOR__ == 6))
 533 #    endif // defined(__GXX_EXPERIMENTAL_CXX0X__)
 534 #   endif // ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 6)) || (__GNUC__ > 4)
 535 #  endif // defined(__GNUC__)
 536 #  if defined(BOOST_ASIO_MSVC)
 537 #   if (_MSC_VER >= 1700)
 538 #    define BOOST_ASIO_HAS_STD_CHRONO 1
 539 #   endif // (_MSC_VER >= 1700)
 540 #  endif // defined(BOOST_ASIO_MSVC)
 541 # endif // !defined(BOOST_ASIO_DISABLE_STD_CHRONO)
 542 #endif // !defined(BOOST_ASIO_HAS_STD_CHRONO)
 543
 544 // Boost support for chrono.
 545 #if !defined(BOOST_ASIO_HAS_BOOST_CHRONO)
 546 # if !defined(BOOST_ASIO_DISABLE_BOOST_CHRONO)
 547 #  if defined(BOOST_ASIO_HAS_BOOST_CONFIG) && (BOOST_VERSION >= 104700)
 548 #   define BOOST_ASIO_HAS_BOOST_CHRONO 1
 549 #  endif // defined(BOOST_ASIO_HAS_BOOST_CONFIG) && (BOOST_VERSION >= 104700)
 550 # endif // !defined(BOOST_ASIO_DISABLE_BOOST_CHRONO)
 551 #endif // !defined(BOOST_ASIO_HAS_BOOST_CHRONO)
 552
 553 // Some form of chrono library is available.
 554 #if !defined(BOOST_ASIO_HAS_CHRONO)
 555 # if defined(BOOST_ASIO_HAS_STD_CHRONO) \
 556     || defined(BOOST_ASIO_HAS_BOOST_CHRONO)
 557 #  define BOOST_ASIO_HAS_CHRONO 1
 558 # endif // defined(BOOST_ASIO_HAS_STD_CHRONO)
 559         // || defined(BOOST_ASIO_HAS_BOOST_CHRONO)
 560 #endif // !defined(BOOST_ASIO_HAS_CHRONO)
 561
 562 // Boost support for the DateTime library.
 563 #if !defined(BOOST_ASIO_HAS_BOOST_DATE_TIME)
 564 # if !defined(BOOST_ASIO_DISABLE_BOOST_DATE_TIME)
 565 #  define BOOST_ASIO_HAS_BOOST_DATE_TIME 1
 566 # endif // !defined(BOOST_ASIO_DISABLE_BOOST_DATE_TIME)
 567 #endif // !defined(BOOST_ASIO_HAS_BOOST_DATE_TIME)
 568
 569 // Standard library support for addressof.
 570 #if !defined(BOOST_ASIO_HAS_STD_ADDRESSOF)
 571 # if !defined(BOOST_ASIO_DISABLE_STD_ADDRESSOF)
 572 #  if defined(__clang__)
 573 #   if defined(BOOST_ASIO_HAS_CLANG_LIBCXX)
 574 #    define BOOST_ASIO_HAS_STD_ADDRESSOF 1
 575 #   elif (__cplusplus >= 201103)
 576 #    define BOOST_ASIO_HAS_STD_ADDRESSOF 1
 577 #   endif // (__cplusplus >= 201103)
 578 #  endif // defined(__clang__)
 579 #  if defined(__GNUC__)
 580 #   if ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 6)) || (__GNUC__ > 4)
 581 #    if defined(__GXX_EXPERIMENTAL_CXX0X__)
 582 #     define BOOST_ASIO_HAS_STD_ADDRESSOF 1
 583 #    endif // defined(__GXX_EXPERIMENTAL_CXX0X__)
 584 #   endif // ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 6)) || (__GNUC__ > 4)
 585 #  endif // defined(__GNUC__)
 586 #  if defined(BOOST_ASIO_MSVC)
 587 #   if (_MSC_VER >= 1700)
 588 #    define BOOST_ASIO_HAS_STD_ADDRESSOF 1
 589 #   endif // (_MSC_VER >= 1700)
 590 #  endif // defined(BOOST_ASIO_MSVC)
 591 # endif // !defined(BOOST_ASIO_DISABLE_STD_ADDRESSOF)
 592 #endif // !defined(BOOST_ASIO_HAS_STD_ADDRESSOF)
 593
 594 // Standard library support for the function class.
 595 #if !defined(BOOST_ASIO_HAS_STD_FUNCTION)
 596 # if !defined(BOOST_ASIO_DISABLE_STD_FUNCTION)
 597 #  if defined(__clang__)
 598 #   if defined(BOOST_ASIO_HAS_CLANG_LIBCXX)
 599 #    define BOOST_ASIO_HAS_STD_FUNCTION 1
 600 #   elif (__cplusplus >= 201103)
 601 #    define BOOST_ASIO_HAS_STD_FUNCTION 1
 602 #   endif // (__cplusplus >= 201103)
 603 #  endif // defined(__clang__)
 604 #  if defined(__GNUC__)
 605 #   if ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 5)) || (__GNUC__ > 4)
 606 #    if defined(__GXX_EXPERIMENTAL_CXX0X__)
 607 #     define BOOST_ASIO_HAS_STD_FUNCTION 1
 608 #    endif // defined(__GXX_EXPERIMENTAL_CXX0X__)
 609 #   endif // ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 5)) || (__GNUC__ > 4)
 610 #  endif // defined(__GNUC__)
 611 #  if defined(BOOST_ASIO_MSVC)
 612 #   if (_MSC_VER >= 1700)
 613 #    define BOOST_ASIO_HAS_STD_FUNCTION 1
 614 #   endif // (_MSC_VER >= 1700)
 615 #  endif // defined(BOOST_ASIO_MSVC)
 616 # endif // !defined(BOOST_ASIO_DISABLE_STD_FUNCTION)
 617 #endif // !defined(BOOST_ASIO_HAS_STD_FUNCTION)
 618
 619 // Standard library support for type traits.
 620 #if !defined(BOOST_ASIO_HAS_STD_TYPE_TRAITS)
 621 # if !defined(BOOST_ASIO_DISABLE_STD_TYPE_TRAITS)
 622 #  if defined(__clang__)
 623 #   if defined(BOOST_ASIO_HAS_CLANG_LIBCXX)
 624 #    define BOOST_ASIO_HAS_STD_TYPE_TRAITS 1
 625 #   elif (__cplusplus >= 201103)
 626 #    if __has_include(<type_traits>)
 627 #     define BOOST_ASIO_HAS_STD_TYPE_TRAITS 1
 628 #    endif // __has_include(<type_traits>)
 629 #   endif // (__cplusplus >= 201103)
 630 #  endif // defined(__clang__)
 631 #  if defined(__GNUC__)
 632 #   if ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 5)) || (__GNUC__ > 4)
 633 #    if defined(__GXX_EXPERIMENTAL_CXX0X__)
 634 #     define BOOST_ASIO_HAS_STD_TYPE_TRAITS 1
 635 #    endif // defined(__GXX_EXPERIMENTAL_CXX0X__)
 636 #   endif // ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 5)) || (__GNUC__ > 4)
 637 #  endif // defined(__GNUC__)
 638 #  if defined(BOOST_ASIO_MSVC)
 639 #   if (_MSC_VER >= 1700)
 640 #    define BOOST_ASIO_HAS_STD_TYPE_TRAITS 1
 641 #   endif // (_MSC_VER >= 1700)
 642 #  endif // defined(BOOST_ASIO_MSVC)
 643 # endif // !defined(BOOST_ASIO_DISABLE_STD_TYPE_TRAITS)
 644 #endif // !defined(BOOST_ASIO_HAS_STD_TYPE_TRAITS)
 645
 646 // Standard library support for the nullptr_t type.
 647 #if !defined(BOOST_ASIO_HAS_NULLPTR)
 648 # if !defined(BOOST_ASIO_DISABLE_NULLPTR)
 649 #  if defined(__clang__)
 650 #   if __has_feature(__cxx_nullptr__)
 651 #    define BOOST_ASIO_HAS_NULLPTR 1
 652 #   endif // __has_feature(__cxx_rvalue_references__)
 653 #  elif defined(__GNUC__)
 654 #   if ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 6)) || (__GNUC__ > 4)
 655 #    if defined(__GXX_EXPERIMENTAL_CXX0X__)
 656 #     define BOOST_ASIO_HAS_NULLPTR 1
 657 #    endif // defined(__GXX_EXPERIMENTAL_CXX0X__)
 658 #   endif // ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 6)) || (__GNUC__ > 4)
 659 #  endif // defined(__GNUC__)
 660 #  if defined(BOOST_ASIO_MSVC)
 661 #   if (_MSC_VER >= 1700)
 662 #    define BOOST_ASIO_HAS_NULLPTR 1
 663 #   endif // (_MSC_VER >= 1700)
 664 #  endif // defined(BOOST_ASIO_MSVC)
 665 # endif // !defined(BOOST_ASIO_DISABLE_NULLPTR)
 666 #endif // !defined(BOOST_ASIO_HAS_NULLPTR)
 667
 668 // Standard library support for the C++11 allocator additions.
 669 #if !defined(BOOST_ASIO_HAS_CXX11_ALLOCATORS)
 670 # if !defined(BOOST_ASIO_DISABLE_CXX11_ALLOCATORS)
 671 #  if defined(__clang__)
 672 #   if defined(BOOST_ASIO_HAS_CLANG_LIBCXX)
 673 #    define BOOST_ASIO_HAS_CXX11_ALLOCATORS 1
 674 #   elif (__cplusplus >= 201103)
 675 #    define BOOST_ASIO_HAS_CXX11_ALLOCATORS 1
 676 #   endif // (__cplusplus >= 201103)
 677 #  elif defined(__GNUC__)
 678 #   if ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 7)) || (__GNUC__ > 4)
 679 #    if defined(__GXX_EXPERIMENTAL_CXX0X__)
 680 #     define BOOST_ASIO_HAS_CXX11_ALLOCATORS 1
 681 #    endif // defined(__GXX_EXPERIMENTAL_CXX0X__)
 682 #   endif // ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 7)) || (__GNUC__ > 4)
 683 #  endif // defined(__GNUC__)
 684 #  if defined(BOOST_ASIO_MSVC)
 685 #   if (_MSC_VER >= 1800)
 686 #    define BOOST_ASIO_HAS_CXX11_ALLOCATORS 1
 687 #   endif // (_MSC_VER >= 1800)
 688 #  endif // defined(BOOST_ASIO_MSVC)
 689 # endif // !defined(BOOST_ASIO_DISABLE_CXX11_ALLOCATORS)
 690 #endif // !defined(BOOST_ASIO_HAS_CXX11_ALLOCATORS)
 691
 692 // Standard library support for the cstdint header.
 693 #if !defined(BOOST_ASIO_HAS_CSTDINT)
 694 # if !defined(BOOST_ASIO_DISABLE_CSTDINT)
 695 #  if defined(__clang__)
 696 #   if defined(BOOST_ASIO_HAS_CLANG_LIBCXX)
 697 #    define BOOST_ASIO_HAS_CSTDINT 1
 698 #   elif (__cplusplus >= 201103)
 699 #    define BOOST_ASIO_HAS_CSTDINT 1
 700 #   endif // (__cplusplus >= 201103)
 701 #  endif // defined(__clang__)
 702 #  if defined(__GNUC__)
 703 #   if ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 5)) || (__GNUC__ > 4)
 704 #    if defined(__GXX_EXPERIMENTAL_CXX0X__)
 705 #     define BOOST_ASIO_HAS_CSTDINT 1
 706 #    endif // defined(__GXX_EXPERIMENTAL_CXX0X__)
 707 #   endif // ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 5)) || (__GNUC__ > 4)
 708 #  endif // defined(__GNUC__)
 709 #  if defined(BOOST_ASIO_MSVC)
 710 #   if (_MSC_VER >= 1700)
 711 #    define BOOST_ASIO_HAS_CSTDINT 1
 712 #   endif // (_MSC_VER >= 1700)
 713 #  endif // defined(BOOST_ASIO_MSVC)
 714 # endif // !defined(BOOST_ASIO_DISABLE_CSTDINT)
 715 #endif // !defined(BOOST_ASIO_HAS_CSTDINT)
 716
 717 // Standard library support for the thread class.
 718 #if !defined(BOOST_ASIO_HAS_STD_THREAD)
 719 # if !defined(BOOST_ASIO_DISABLE_STD_THREAD)
 720 #  if defined(__clang__)
 721 #   if defined(BOOST_ASIO_HAS_CLANG_LIBCXX)
 722 #    define BOOST_ASIO_HAS_STD_THREAD 1
 723 #   elif (__cplusplus >= 201103)
 724 #    if __has_include(<thread>)
 725 #     define BOOST_ASIO_HAS_STD_THREAD 1
 726 #    endif // __has_include(<thread>)
 727 #   endif // (__cplusplus >= 201103)
 728 #  endif // defined(__clang__)
 729 #  if defined(__GNUC__)
 730 #   if ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 7)) || (__GNUC__ > 4)
 731 #    if defined(__GXX_EXPERIMENTAL_CXX0X__)
 732 #     define BOOST_ASIO_HAS_STD_THREAD 1
 733 #    endif // defined(__GXX_EXPERIMENTAL_CXX0X__)
 734 #   endif // ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 7)) || (__GNUC__ > 4)
 735 #  endif // defined(__GNUC__)
 736 #  if defined(BOOST_ASIO_MSVC)
 737 #   if (_MSC_VER >= 1700)
 738 #    define BOOST_ASIO_HAS_STD_THREAD 1
 739 #   endif // (_MSC_VER >= 1700)
 740 #  endif // defined(BOOST_ASIO_MSVC)
 741 # endif // !defined(BOOST_ASIO_DISABLE_STD_THREAD)
 742 #endif // !defined(BOOST_ASIO_HAS_STD_THREAD)
 743
 744 // Standard library support for the mutex and condition variable classes.
 745 #if !defined(BOOST_ASIO_HAS_STD_MUTEX_AND_CONDVAR)
 746 # if !defined(BOOST_ASIO_DISABLE_STD_MUTEX_AND_CONDVAR)
 747 #  if defined(__clang__)
 748 #   if defined(BOOST_ASIO_HAS_CLANG_LIBCXX)
 749 #    define BOOST_ASIO_HAS_STD_MUTEX_AND_CONDVAR 1
 750 #   elif (__cplusplus >= 201103)
 751 #    if __has_include(<mutex>)
 752 #     define BOOST_ASIO_HAS_STD_MUTEX_AND_CONDVAR 1
 753 #    endif // __has_include(<mutex>)
 754 #   endif // (__cplusplus >= 201103)
 755 #  endif // defined(__clang__)
 756 #  if defined(__GNUC__)
 757 #   if ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 7)) || (__GNUC__ > 4)
 758 #    if defined(__GXX_EXPERIMENTAL_CXX0X__)
 759 #     define BOOST_ASIO_HAS_STD_MUTEX_AND_CONDVAR 1
 760 #    endif // defined(__GXX_EXPERIMENTAL_CXX0X__)
 761 #   endif // ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 7)) || (__GNUC__ > 4)
 762 #  endif // defined(__GNUC__)
 763 #  if defined(BOOST_ASIO_MSVC)
 764 #   if (_MSC_VER >= 1700)
 765 #    define BOOST_ASIO_HAS_STD_MUTEX_AND_CONDVAR 1
 766 #   endif // (_MSC_VER >= 1700)
 767 #  endif // defined(BOOST_ASIO_MSVC)
 768 # endif // !defined(BOOST_ASIO_DISABLE_STD_MUTEX_AND_CONDVAR)
 769 #endif // !defined(BOOST_ASIO_HAS_STD_MUTEX_AND_CONDVAR)
 770
 771 // Standard library support for the call_once function.
 772 #if !defined(BOOST_ASIO_HAS_STD_CALL_ONCE)
 773 # if !defined(BOOST_ASIO_DISABLE_STD_CALL_ONCE)
 774 #  if defined(__clang__)
 775 #   if defined(BOOST_ASIO_HAS_CLANG_LIBCXX)
 776 #    define BOOST_ASIO_HAS_STD_CALL_ONCE 1
 777 #   elif (__cplusplus >= 201103)
 778 #    if __has_include(<mutex>)
 779 #     define BOOST_ASIO_HAS_STD_CALL_ONCE 1
 780 #    endif // __has_include(<mutex>)
 781 #   endif // (__cplusplus >= 201103)
 782 #  endif // defined(__clang__)
 783 #  if defined(__GNUC__)
 784 #   if ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 7)) || (__GNUC__ > 4)
 785 #    if defined(__GXX_EXPERIMENTAL_CXX0X__)
 786 #     define BOOST_ASIO_HAS_STD_CALL_ONCE 1
 787 #    endif // defined(__GXX_EXPERIMENTAL_CXX0X__)
 788 #   endif // ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 7)) || (__GNUC__ > 4)
 789 #  endif // defined(__GNUC__)
 790 #  if defined(BOOST_ASIO_MSVC)
 791 #   if (_MSC_VER >= 1700)
 792 #    define BOOST_ASIO_HAS_STD_CALL_ONCE 1
 793 #   endif // (_MSC_VER >= 1700)
 794 #  endif // defined(BOOST_ASIO_MSVC)
 795 # endif // !defined(BOOST_ASIO_DISABLE_STD_CALL_ONCE)
 796 #endif // !defined(BOOST_ASIO_HAS_STD_CALL_ONCE)
 797
 798 // Standard library support for futures.
 799 #if !defined(BOOST_ASIO_HAS_STD_FUTURE)
 800 # if !defined(BOOST_ASIO_DISABLE_STD_FUTURE)
 801 #  if defined(__clang__)
 802 #   if defined(BOOST_ASIO_HAS_CLANG_LIBCXX)
 803 #    define BOOST_ASIO_HAS_STD_FUTURE 1
 804 #   elif (__cplusplus >= 201103)
 805 #    if __has_include(<future>)
 806 #     define BOOST_ASIO_HAS_STD_FUTURE 1
 807 #    endif // __has_include(<mutex>)
 808 #   endif // (__cplusplus >= 201103)
 809 #  endif // defined(__clang__)
 810 #  if defined(__GNUC__)
 811 #   if ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 7)) || (__GNUC__ > 4)
 812 #    if defined(__GXX_EXPERIMENTAL_CXX0X__)
 813 #     define BOOST_ASIO_HAS_STD_FUTURE 1
 814 #    endif // defined(__GXX_EXPERIMENTAL_CXX0X__)
 815 #   endif // ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 7)) || (__GNUC__ > 4)
 816 #  endif // defined(__GNUC__)
 817 #  if defined(BOOST_ASIO_MSVC)
 818 #   if (_MSC_VER >= 1700)
 819 #    define BOOST_ASIO_HAS_STD_FUTURE 1
 820 #   endif // (_MSC_VER >= 1700)
 821 #  endif // defined(BOOST_ASIO_MSVC)
 822 # endif // !defined(BOOST_ASIO_DISABLE_STD_FUTURE)
 823 #endif // !defined(BOOST_ASIO_HAS_STD_FUTURE)
 824
 825 // Standard library support for std::string_view.
 826 #if !defined(BOOST_ASIO_HAS_STD_STRING_VIEW)
 827 # if !defined(BOOST_ASIO_DISABLE_STD_STRING_VIEW)
 828 #  if defined(__clang__)
 829 #   if defined(BOOST_ASIO_HAS_CLANG_LIBCXX)
 830 #    if (__cplusplus >= 201402)
 831 #     if __has_include(<string_view>)
 832 #      define BOOST_ASIO_HAS_STD_STRING_VIEW 1
 833 #     endif // __has_include(<string_view>)
 834 #    endif // (__cplusplus >= 201402)
 835 #   else // defined(BOOST_ASIO_HAS_CLANG_LIBCXX)
 836 #    if (__cplusplus >= 201703)
 837 #     if __has_include(<string_view>)
 838 #      define BOOST_ASIO_HAS_STD_STRING_VIEW 1
 839 #     endif // __has_include(<string_view>)
 840 #    endif // (__cplusplus >= 201703)
 841 #   endif // defined(BOOST_ASIO_HAS_CLANG_LIBCXX)
 842 #  elif defined(__GNUC__)
 843 #   if (__GNUC__ >= 7)
 844 #    if (__cplusplus >= 201703)
 845 #     define BOOST_ASIO_HAS_STD_STRING_VIEW 1
 846 #    endif // (__cplusplus >= 201703)
 847 #   endif // (__GNUC__ >= 7)
 848 #  elif defined(BOOST_ASIO_MSVC)
 849 #   if (_MSC_VER >= 1910 && _MSVC_LANG >= 201703)
 850 #    define BOOST_ASIO_HAS_STD_STRING_VIEW 1
 851 #   endif // (_MSC_VER >= 1910 && _MSVC_LANG >= 201703)
 852 #  endif // defined(BOOST_ASIO_MSVC)
 853 # endif // !defined(BOOST_ASIO_DISABLE_STD_STRING_VIEW)
 854 #endif // !defined(BOOST_ASIO_HAS_STD_STRING_VIEW)
 855
 856 // Standard library support for std::experimental::string_view.
 857 #if !defined(BOOST_ASIO_HAS_STD_EXPERIMENTAL_STRING_VIEW)
 858 # if !defined(BOOST_ASIO_DISABLE_STD_EXPERIMENTAL_STRING_VIEW)
 859 #  if defined(__clang__)
 860 #   if defined(BOOST_ASIO_HAS_CLANG_LIBCXX)
 861 #    if (_LIBCPP_VERSION < 7000)
 862 #     if (__cplusplus >= 201402)
 863 #      if __has_include(<experimental/string_view>)
 864 #       define BOOST_ASIO_HAS_STD_EXPERIMENTAL_STRING_VIEW 1
 865 #      endif // __has_include(<experimental/string_view>)
 866 #     endif // (__cplusplus >= 201402)
 867 #    endif // (_LIBCPP_VERSION < 7000)
 868 #   else // defined(BOOST_ASIO_HAS_CLANG_LIBCXX)
 869 #    if (__cplusplus >= 201402)
 870 #     if __has_include(<experimental/string_view>)
 871 #      define BOOST_ASIO_HAS_STD_EXPERIMENTAL_STRING_VIEW 1
 872 #     endif // __has_include(<experimental/string_view>)
 873 #    endif // (__cplusplus >= 201402)
 874 #   endif // // defined(BOOST_ASIO_HAS_CLANG_LIBCXX)
 875 #  endif // defined(__clang__)
 876 #  if defined(__GNUC__)
 877 #   if ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 9)) || (__GNUC__ > 4)
 878 #    if (__cplusplus >= 201402)
 879 #     define BOOST_ASIO_HAS_STD_EXPERIMENTAL_STRING_VIEW 1
 880 #    endif // (__cplusplus >= 201402)
 881 #   endif // ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 9)) || (__GNUC__ > 4)
 882 #  endif // defined(__GNUC__)
 883 # endif // !defined(BOOST_ASIO_DISABLE_STD_EXPERIMENTAL_STRING_VIEW)
 884 #endif // !defined(BOOST_ASIO_HAS_STD_EXPERIMENTAL_STRING_VIEW)
 885
 886 // Standard library has a string_view that we can use.
 887 #if !defined(BOOST_ASIO_HAS_STRING_VIEW)
 888 # if !defined(BOOST_ASIO_DISABLE_STRING_VIEW)
 889 #  if defined(BOOST_ASIO_HAS_STD_STRING_VIEW)
 890 #   define BOOST_ASIO_HAS_STRING_VIEW 1
 891 #  elif defined(BOOST_ASIO_HAS_STD_EXPERIMENTAL_STRING_VIEW)
 892 #   define BOOST_ASIO_HAS_STRING_VIEW 1
 893 #  endif // defined(BOOST_ASIO_HAS_STD_EXPERIMENTAL_STRING_VIEW)
 894 # endif // !defined(BOOST_ASIO_DISABLE_STRING_VIEW)
 895 #endif // !defined(BOOST_ASIO_HAS_STRING_VIEW)
 896
 897 // Standard library support for iostream move construction and assignment.
 898 #if !defined(BOOST_ASIO_HAS_STD_IOSTREAM_MOVE)
 899 # if !defined(BOOST_ASIO_DISABLE_STD_IOSTREAM_MOVE)
 900 #  if defined(__GNUC__)
 901 #   if (__GNUC__ > 4)
 902 #    if defined(__GXX_EXPERIMENTAL_CXX0X__)
 903 #     define BOOST_ASIO_HAS_STD_IOSTREAM_MOVE 1
 904 #    endif // defined(__GXX_EXPERIMENTAL_CXX0X__)
 905 #   endif // (__GNUC__ > 4)
 906 #  endif // defined(__GNUC__)
 907 #  if defined(BOOST_ASIO_MSVC)
 908 #   if (_MSC_VER >= 1700)
 909 #    define BOOST_ASIO_HAS_STD_IOSTREAM_MOVE 1
 910 #   endif // (_MSC_VER >= 1700)
 911 #  endif // defined(BOOST_ASIO_MSVC)
 912 # endif // !defined(BOOST_ASIO_DISABLE_STD_IOSTREAM_MOVE)
 913 #endif // !defined(BOOST_ASIO_HAS_STD_IOSTREAM_MOVE)
 914
 915 // Standard library has invoke_result (which supersedes result_of).
 916 #if !defined(BOOST_ASIO_HAS_STD_INVOKE_RESULT)
 917 # if !defined(BOOST_ASIO_DISABLE_STD_INVOKE_RESULT)
 918 #  if defined(BOOST_ASIO_MSVC)
 919 #   if (_MSC_VER >= 1911 && _MSVC_LANG >= 201703)
 920 #    define BOOST_ASIO_HAS_STD_INVOKE_RESULT 1
 921 #   endif // (_MSC_VER >= 1911 && _MSVC_LANG >= 201703)
 922 #  endif // defined(BOOST_ASIO_MSVC)
 923 # endif // !defined(BOOST_ASIO_DISABLE_STD_INVOKE_RESULT)
 924 #endif // !defined(BOOST_ASIO_HAS_STD_INVOKE_RESULT)
 925
 926 // Windows App target. Windows but with a limited API.
 927 #if !defined(BOOST_ASIO_WINDOWS_APP)
 928 # if defined(_WIN32_WINNT) && (_WIN32_WINNT >= 0x0603)
 929 #  include <winapifamily.h>
 930 #  if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_APP) \
 931    && !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
 932 #   define BOOST_ASIO_WINDOWS_APP 1
 933 #  endif // WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_APP)
 934          // && !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
 935 # endif // defined(_WIN32_WINNT) && (_WIN32_WINNT >= 0x0603)
 936 #endif // !defined(BOOST_ASIO_WINDOWS_APP)
 937
 938 // Legacy WinRT target. Windows App is preferred.
 939 #if !defined(BOOST_ASIO_WINDOWS_RUNTIME)
 940 # if !defined(BOOST_ASIO_WINDOWS_APP)
 941 #  if defined(__cplusplus_winrt)
 942 #   include <winapifamily.h>
 943 #   if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_APP) \
 944     && !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
 945 #    define BOOST_ASIO_WINDOWS_RUNTIME 1
 946 #   endif // WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_APP)
 947           // && !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
 948 #  endif // defined(__cplusplus_winrt)
 949 # endif // !defined(BOOST_ASIO_WINDOWS_APP)
 950 #endif // !defined(BOOST_ASIO_WINDOWS_RUNTIME)
 951
 952 // Windows target. Excludes WinRT but includes Windows App targets.
 953 #if !defined(BOOST_ASIO_WINDOWS)
 954 # if !defined(BOOST_ASIO_WINDOWS_RUNTIME)
 955 #  if defined(BOOST_ASIO_HAS_BOOST_CONFIG) && defined(BOOST_WINDOWS)
 956 #   define BOOST_ASIO_WINDOWS 1
 957 #  elif defined(WIN32) || defined(_WIN32) || defined(__WIN32__)
 958 #   define BOOST_ASIO_WINDOWS 1
 959 #  elif defined(BOOST_ASIO_WINDOWS_APP)
 960 #   define BOOST_ASIO_WINDOWS 1
 961 #  endif // defined(BOOST_ASIO_HAS_BOOST_CONFIG) && defined(BOOST_WINDOWS)
 962 # endif // !defined(BOOST_ASIO_WINDOWS_RUNTIME)
 963 #endif // !defined(BOOST_ASIO_WINDOWS)
 964
 965 // Windows: target OS version.
 966 #if defined(BOOST_ASIO_WINDOWS) || defined(__CYGWIN__)
 967 # if !defined(_WIN32_WINNT) && !defined(_WIN32_WINDOWS)
 968 #  if defined(_MSC_VER) || defined(__BORLANDC__)
 969 #   pragma message( \
 970   "Please define _WIN32_WINNT or _WIN32_WINDOWS appropriately. For example:\n"\
 971   "- add -D_WIN32_WINNT=0x0601 to the compiler command line; or\n"\
 972   "- add _WIN32_WINNT=0x0601 to your project's Preprocessor Definitions.\n"\
 973   "Assuming _WIN32_WINNT=0x0601 (i.e. Windows 7 target).")
 974 #  else // defined(_MSC_VER) || defined(__BORLANDC__)
 975 #   warning Please define _WIN32_WINNT or _WIN32_WINDOWS appropriately.
 976 #   warning For example, add -D_WIN32_WINNT=0x0601 to the compiler command line.
 977 #   warning Assuming _WIN32_WINNT=0x0601 (i.e. Windows 7 target).
 978 #  endif // defined(_MSC_VER) || defined(__BORLANDC__)
 979 #  define _WIN32_WINNT 0x0601
 980 # endif // !defined(_WIN32_WINNT) && !defined(_WIN32_WINDOWS)
 981 # if defined(_MSC_VER)
 982 #  if defined(_WIN32) && !defined(WIN32)
 983 #   if !defined(_WINSOCK2API_)
 984 #    define WIN32 // Needed for correct types in winsock2.h
 985 #   else // !defined(_WINSOCK2API_)
 986 #    error Please define the macro WIN32 in your compiler options
 987 #   endif // !defined(_WINSOCK2API_)
 988 #  endif // defined(_WIN32) && !defined(WIN32)
 989 # endif // defined(_MSC_VER)
 990 # if defined(__BORLANDC__)
 991 #  if defined(__WIN32__) && !defined(WIN32)
 992 #   if !defined(_WINSOCK2API_)
 993 #    define WIN32 // Needed for correct types in winsock2.h
 994 #   else // !defined(_WINSOCK2API_)
 995 #    error Please define the macro WIN32 in your compiler options
 996 #   endif // !defined(_WINSOCK2API_)
 997 #  endif // defined(__WIN32__) && !defined(WIN32)
 998 # endif // defined(__BORLANDC__)
 999 # if defined(__CYGWIN__)
1000 #  if !defined(__USE_W32_SOCKETS)
1001 #   error You must add -D__USE_W32_SOCKETS to your compiler options.
1002 #  endif // !defined(__USE_W32_SOCKETS)
1003 # endif // defined(__CYGWIN__)
1004 #endif // defined(BOOST_ASIO_WINDOWS) || defined(__CYGWIN__)
1005
1006 // Windows: minimise header inclusion.
1007 #if defined(BOOST_ASIO_WINDOWS) || defined(__CYGWIN__)
1008 # if !defined(BOOST_ASIO_NO_WIN32_LEAN_AND_MEAN)
1009 #  if !defined(WIN32_LEAN_AND_MEAN)
1010 #   define WIN32_LEAN_AND_MEAN
1011 #  endif // !defined(WIN32_LEAN_AND_MEAN)
1012 # endif // !defined(BOOST_ASIO_NO_WIN32_LEAN_AND_MEAN)
1013 #endif // defined(BOOST_ASIO_WINDOWS) || defined(__CYGWIN__)
1014
1015 // Windows: suppress definition of "min" and "max" macros.
1016 #if defined(BOOST_ASIO_WINDOWS) || defined(__CYGWIN__)
1017 # if !defined(BOOST_ASIO_NO_NOMINMAX)
1018 #  if !defined(NOMINMAX)
1019 #   define NOMINMAX 1
1020 #  endif // !defined(NOMINMAX)
1021 # endif // !defined(BOOST_ASIO_NO_NOMINMAX)
1022 #endif // defined(BOOST_ASIO_WINDOWS) || defined(__CYGWIN__)
1023
1024 // Windows: IO Completion Ports.
1025 #if !defined(BOOST_ASIO_HAS_IOCP)
1026 # if defined(BOOST_ASIO_WINDOWS) || defined(__CYGWIN__)
1027 #  if defined(_WIN32_WINNT) && (_WIN32_WINNT >= 0x0400)
1028 #   if !defined(UNDER_CE) && !defined(BOOST_ASIO_WINDOWS_APP)
1029 #    if !defined(BOOST_ASIO_DISABLE_IOCP)
1030 #     define BOOST_ASIO_HAS_IOCP 1
1031 #    endif // !defined(BOOST_ASIO_DISABLE_IOCP)
1032 #   endif // !defined(UNDER_CE) && !defined(BOOST_ASIO_WINDOWS_APP)
1033 #  endif // defined(_WIN32_WINNT) && (_WIN32_WINNT >= 0x0400)
1034 # endif // defined(BOOST_ASIO_WINDOWS) || defined(__CYGWIN__)
1035 #endif // !defined(BOOST_ASIO_HAS_IOCP)
1036
1037 // On POSIX (and POSIX-like) platforms we need to include unistd.h in order to
1038 // get access to the various platform feature macros, e.g. to be able to test
1039 // for threads support.
1040 #if !defined(BOOST_ASIO_HAS_UNISTD_H)
1041 # if !defined(BOOST_ASIO_HAS_BOOST_CONFIG)
1042 #  if defined(unix) \
1043    || defined(__unix) \
1044    || defined(_XOPEN_SOURCE) \
1045    || defined(_POSIX_SOURCE) \
1046    || (defined(__MACH__) && defined(__APPLE__)) \
1047    || defined(__FreeBSD__) \
1048    || defined(__NetBSD__) \
1049    || defined(__OpenBSD__) \
1050    || defined(__linux__) \
1051    || defined(__HAIKU__)
1052 #   define BOOST_ASIO_HAS_UNISTD_H 1
1053 #  endif
1054 # endif // !defined(BOOST_ASIO_HAS_BOOST_CONFIG)
1055 #endif // !defined(BOOST_ASIO_HAS_UNISTD_H)
1056 #if defined(BOOST_ASIO_HAS_UNISTD_H)
1057 # include <unistd.h>
1058 #endif // defined(BOOST_ASIO_HAS_UNISTD_H)
1059
1060 // Linux: epoll, eventfd and timerfd.
1061 #if defined(__linux__)
1062 # include <linux/version.h>
1063 # if !defined(BOOST_ASIO_HAS_EPOLL)
1064 #  if !defined(BOOST_ASIO_DISABLE_EPOLL)
1065 #   if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,45)
1066 #    define BOOST_ASIO_HAS_EPOLL 1
1067 #   endif // LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,45)
1068 #  endif // !defined(BOOST_ASIO_DISABLE_EPOLL)
1069 # endif // !defined(BOOST_ASIO_HAS_EPOLL)
1070 # if !defined(BOOST_ASIO_HAS_EVENTFD)
1071 #  if !defined(BOOST_ASIO_DISABLE_EVENTFD)
1072 #   if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,22)
1073 #    define BOOST_ASIO_HAS_EVENTFD 1
1074 #   endif // LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,22)
1075 #  endif // !defined(BOOST_ASIO_DISABLE_EVENTFD)
1076 # endif // !defined(BOOST_ASIO_HAS_EVENTFD)
1077 # if !defined(BOOST_ASIO_HAS_TIMERFD)
1078 #  if defined(BOOST_ASIO_HAS_EPOLL)
1079 #   if (__GLIBC__ > 2) || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 8)
1080 #    define BOOST_ASIO_HAS_TIMERFD 1
1081 #   endif // (__GLIBC__ > 2) || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 8)
1082 #  endif // defined(BOOST_ASIO_HAS_EPOLL)
1083 # endif // !defined(BOOST_ASIO_HAS_TIMERFD)
1084 #endif // defined(__linux__)
1085
1086 // Mac OS X, FreeBSD, NetBSD, OpenBSD: kqueue.
1087 #if (defined(__MACH__) && defined(__APPLE__)) \
1088   || defined(__FreeBSD__) \
1089   || defined(__NetBSD__) \
1090   || defined(__OpenBSD__)
1091 # if !defined(BOOST_ASIO_HAS_KQUEUE)
1092 #  if !defined(BOOST_ASIO_DISABLE_KQUEUE)
1093 #   define BOOST_ASIO_HAS_KQUEUE 1
1094 #  endif // !defined(BOOST_ASIO_DISABLE_KQUEUE)
1095 # endif // !defined(BOOST_ASIO_HAS_KQUEUE)
1096 #endif // (defined(__MACH__) && defined(__APPLE__))
1097        //   || defined(__FreeBSD__)
1098        //   || defined(__NetBSD__)
1099        //   || defined(__OpenBSD__)
1100
1101 // Solaris: /dev/poll.
1102 #if defined(__sun)
1103 # if !defined(BOOST_ASIO_HAS_DEV_POLL)
1104 #  if !defined(BOOST_ASIO_DISABLE_DEV_POLL)
1105 #   define BOOST_ASIO_HAS_DEV_POLL 1
1106 #  endif // !defined(BOOST_ASIO_DISABLE_DEV_POLL)
1107 # endif // !defined(BOOST_ASIO_HAS_DEV_POLL)
1108 #endif // defined(__sun)
1109
1110 // Serial ports.
1111 #if !defined(BOOST_ASIO_HAS_SERIAL_PORT)
1112 # if defined(BOOST_ASIO_HAS_IOCP) \
1113   || !defined(BOOST_ASIO_WINDOWS) \
1114   && !defined(BOOST_ASIO_WINDOWS_RUNTIME) \
1115   && !defined(__CYGWIN__)
1116 #  if !defined(__SYMBIAN32__)
1117 #   if !defined(BOOST_ASIO_DISABLE_SERIAL_PORT)
1118 #    define BOOST_ASIO_HAS_SERIAL_PORT 1
1119 #   endif // !defined(BOOST_ASIO_DISABLE_SERIAL_PORT)
1120 #  endif // !defined(__SYMBIAN32__)
1121 # endif // defined(BOOST_ASIO_HAS_IOCP)
1122         //   || !defined(BOOST_ASIO_WINDOWS)
1123         //   && !defined(BOOST_ASIO_WINDOWS_RUNTIME)
1124         //   && !defined(__CYGWIN__)
1125 #endif // !defined(BOOST_ASIO_HAS_SERIAL_PORT)
1126
1127 // Windows: stream handles.
1128 #if !defined(BOOST_ASIO_HAS_WINDOWS_STREAM_HANDLE)
1129 # if !defined(BOOST_ASIO_DISABLE_WINDOWS_STREAM_HANDLE)
1130 #  if defined(BOOST_ASIO_HAS_IOCP)
1131 #   define BOOST_ASIO_HAS_WINDOWS_STREAM_HANDLE 1
1132 #  endif // defined(BOOST_ASIO_HAS_IOCP)
1133 # endif // !defined(BOOST_ASIO_DISABLE_WINDOWS_STREAM_HANDLE)
1134 #endif // !defined(BOOST_ASIO_HAS_WINDOWS_STREAM_HANDLE)
1135
1136 // Windows: random access handles.
1137 #if !defined(BOOST_ASIO_HAS_WINDOWS_RANDOM_ACCESS_HANDLE)
1138 # if !defined(BOOST_ASIO_DISABLE_WINDOWS_RANDOM_ACCESS_HANDLE)
1139 #  if defined(BOOST_ASIO_HAS_IOCP)
1140 #   define BOOST_ASIO_HAS_WINDOWS_RANDOM_ACCESS_HANDLE 1
1141 #  endif // defined(BOOST_ASIO_HAS_IOCP)
1142 # endif // !defined(BOOST_ASIO_DISABLE_WINDOWS_RANDOM_ACCESS_HANDLE)
1143 #endif // !defined(BOOST_ASIO_HAS_WINDOWS_RANDOM_ACCESS_HANDLE)
1144
1145 // Windows: object handles.
1146 #if !defined(BOOST_ASIO_HAS_WINDOWS_OBJECT_HANDLE)
1147 # if !defined(BOOST_ASIO_DISABLE_WINDOWS_OBJECT_HANDLE)
1148 #  if defined(BOOST_ASIO_WINDOWS) || defined(__CYGWIN__)
1149 #   if !defined(UNDER_CE) && !defined(BOOST_ASIO_WINDOWS_APP)
1150 #    define BOOST_ASIO_HAS_WINDOWS_OBJECT_HANDLE 1
1151 #   endif // !defined(UNDER_CE) && !defined(BOOST_ASIO_WINDOWS_APP)
1152 #  endif // defined(BOOST_ASIO_WINDOWS) || defined(__CYGWIN__)
1153 # endif // !defined(BOOST_ASIO_DISABLE_WINDOWS_OBJECT_HANDLE)
1154 #endif // !defined(BOOST_ASIO_HAS_WINDOWS_OBJECT_HANDLE)
1155
1156 // Windows: OVERLAPPED wrapper.
1157 #if !defined(BOOST_ASIO_HAS_WINDOWS_OVERLAPPED_PTR)
1158 # if !defined(BOOST_ASIO_DISABLE_WINDOWS_OVERLAPPED_PTR)
1159 #  if defined(BOOST_ASIO_HAS_IOCP)
1160 #   define BOOST_ASIO_HAS_WINDOWS_OVERLAPPED_PTR 1
1161 #  endif // defined(BOOST_ASIO_HAS_IOCP)
1162 # endif // !defined(BOOST_ASIO_DISABLE_WINDOWS_OVERLAPPED_PTR)
1163 #endif // !defined(BOOST_ASIO_HAS_WINDOWS_OVERLAPPED_PTR)
1164
1165 // POSIX: stream-oriented file descriptors.
1166 #if !defined(BOOST_ASIO_HAS_POSIX_STREAM_DESCRIPTOR)
1167 # if !defined(BOOST_ASIO_DISABLE_POSIX_STREAM_DESCRIPTOR)
1168 #  if !defined(BOOST_ASIO_WINDOWS) \
1169   && !defined(BOOST_ASIO_WINDOWS_RUNTIME) \
1170   && !defined(__CYGWIN__)
1171 #   define BOOST_ASIO_HAS_POSIX_STREAM_DESCRIPTOR 1
1172 #  endif // !defined(BOOST_ASIO_WINDOWS)
1173          //   && !defined(BOOST_ASIO_WINDOWS_RUNTIME)
1174          //   && !defined(__CYGWIN__)
1175 # endif // !defined(BOOST_ASIO_DISABLE_POSIX_STREAM_DESCRIPTOR)
1176 #endif // !defined(BOOST_ASIO_HAS_POSIX_STREAM_DESCRIPTOR)
1177
1178 // UNIX domain sockets.
1179 #if !defined(BOOST_ASIO_HAS_LOCAL_SOCKETS)
1180 # if !defined(BOOST_ASIO_DISABLE_LOCAL_SOCKETS)
1181 #  if !defined(BOOST_ASIO_WINDOWS) \
1182   && !defined(BOOST_ASIO_WINDOWS_RUNTIME) \
1183   && !defined(__CYGWIN__)
1184 #   define BOOST_ASIO_HAS_LOCAL_SOCKETS 1
1185 #  endif // !defined(BOOST_ASIO_WINDOWS)
1186          //   && !defined(BOOST_ASIO_WINDOWS_RUNTIME)
1187          //   && !defined(__CYGWIN__)
1188 # endif // !defined(BOOST_ASIO_DISABLE_LOCAL_SOCKETS)
1189 #endif // !defined(BOOST_ASIO_HAS_LOCAL_SOCKETS)
1190
1191 // Can use sigaction() instead of signal().
1192 #if !defined(BOOST_ASIO_HAS_SIGACTION)
1193 # if !defined(BOOST_ASIO_DISABLE_SIGACTION)
1194 #  if !defined(BOOST_ASIO_WINDOWS) \
1195   && !defined(BOOST_ASIO_WINDOWS_RUNTIME) \
1196   && !defined(__CYGWIN__)
1197 #   define BOOST_ASIO_HAS_SIGACTION 1
1198 #  endif // !defined(BOOST_ASIO_WINDOWS)
1199          //   && !defined(BOOST_ASIO_WINDOWS_RUNTIME)
1200          //   && !defined(__CYGWIN__)
1201 # endif // !defined(BOOST_ASIO_DISABLE_SIGACTION)
1202 #endif // !defined(BOOST_ASIO_HAS_SIGACTION)
1203
1204 // Can use signal().
1205 #if !defined(BOOST_ASIO_HAS_SIGNAL)
1206 # if !defined(BOOST_ASIO_DISABLE_SIGNAL)
1207 #  if !defined(UNDER_CE)
1208 #   define BOOST_ASIO_HAS_SIGNAL 1
1209 #  endif // !defined(UNDER_CE)
1210 # endif // !defined(BOOST_ASIO_DISABLE_SIGNAL)
1211 #endif // !defined(BOOST_ASIO_HAS_SIGNAL)
1212
1213 // Can use getaddrinfo() and getnameinfo().
1214 #if !defined(BOOST_ASIO_HAS_GETADDRINFO)
1215 # if !defined(BOOST_ASIO_DISABLE_GETADDRINFO)
1216 #  if defined(BOOST_ASIO_WINDOWS) || defined(__CYGWIN__)
1217 #   if defined(_WIN32_WINNT) && (_WIN32_WINNT >= 0x0501)
1218 #    define BOOST_ASIO_HAS_GETADDRINFO 1
1219 #   elif defined(UNDER_CE)
1220 #    define BOOST_ASIO_HAS_GETADDRINFO 1
1221 #   endif // defined(UNDER_CE)
1222 #  elif defined(__MACH__) && defined(__APPLE__)
1223 #   if defined(__MAC_OS_X_VERSION_MIN_REQUIRED)
1224 #    if (__MAC_OS_X_VERSION_MIN_REQUIRED >= 1050)
1225 #     define BOOST_ASIO_HAS_GETADDRINFO 1
1226 #    endif // (__MAC_OS_X_VERSION_MIN_REQUIRED >= 1050)
1227 #   else // defined(__MAC_OS_X_VERSION_MIN_REQUIRED)
1228 #    define BOOST_ASIO_HAS_GETADDRINFO 1
1229 #   endif // defined(__MAC_OS_X_VERSION_MIN_REQUIRED)
1230 #  else // defined(__MACH__) && defined(__APPLE__)
1231 #   define BOOST_ASIO_HAS_GETADDRINFO 1
1232 #  endif // defined(__MACH__) && defined(__APPLE__)
1233 # endif // !defined(BOOST_ASIO_DISABLE_GETADDRINFO)
1234 #endif // !defined(BOOST_ASIO_HAS_GETADDRINFO)
1235
1236 // Whether standard iostreams are disabled.
1237 #if !defined(BOOST_ASIO_NO_IOSTREAM)
1238 # if defined(BOOST_ASIO_HAS_BOOST_CONFIG) && defined(BOOST_NO_IOSTREAM)
1239 #  define BOOST_ASIO_NO_IOSTREAM 1
1240 # endif // !defined(BOOST_NO_IOSTREAM)
1241 #endif // !defined(BOOST_ASIO_NO_IOSTREAM)
1242
1243 // Whether exception handling is disabled.
1244 #if !defined(BOOST_ASIO_NO_EXCEPTIONS)
1245 # if defined(BOOST_ASIO_HAS_BOOST_CONFIG) && defined(BOOST_NO_EXCEPTIONS)
1246 #  define BOOST_ASIO_NO_EXCEPTIONS 1
1247 # endif // !defined(BOOST_NO_EXCEPTIONS)
1248 #endif // !defined(BOOST_ASIO_NO_EXCEPTIONS)
1249
1250 // Whether the typeid operator is supported.
1251 #if !defined(BOOST_ASIO_NO_TYPEID)
1252 # if defined(BOOST_ASIO_HAS_BOOST_CONFIG) && defined(BOOST_NO_TYPEID)
1253 #  define BOOST_ASIO_NO_TYPEID 1
1254 # endif // !defined(BOOST_NO_TYPEID)
1255 #endif // !defined(BOOST_ASIO_NO_TYPEID)
1256
1257 // Threads.
1258 #if !defined(BOOST_ASIO_HAS_THREADS)
1259 # if !defined(BOOST_ASIO_DISABLE_THREADS)
1260 #  if defined(BOOST_ASIO_HAS_BOOST_CONFIG) && defined(BOOST_HAS_THREADS)
1261 #   define BOOST_ASIO_HAS_THREADS 1
1262 #  elif defined(__GNUC__) && !defined(__MINGW32__) \
1263      && !defined(linux) && !defined(__linux) && !defined(__linux__)
1264 #   define BOOST_ASIO_HAS_THREADS 1
1265 #  elif defined(_MT) || defined(__MT__)
1266 #   define BOOST_ASIO_HAS_THREADS 1
1267 #  elif defined(_REENTRANT)
1268 #   define BOOST_ASIO_HAS_THREADS 1
1269 #  elif defined(__APPLE__)
1270 #   define BOOST_ASIO_HAS_THREADS 1
1271 #  elif defined(__HAIKU__)
1272 #   define BOOST_ASIO_HAS_THREADS 1
1273 #  elif defined(_POSIX_THREADS) && (_POSIX_THREADS + 0 >= 0)
1274 #   define BOOST_ASIO_HAS_THREADS 1
1275 #  elif defined(_PTHREADS)
1276 #   define BOOST_ASIO_HAS_THREADS 1
1277 #  endif // defined(BOOST_ASIO_HAS_BOOST_CONFIG) && defined(BOOST_HAS_THREADS)
1278 # endif // !defined(BOOST_ASIO_DISABLE_THREADS)
1279 #endif // !defined(BOOST_ASIO_HAS_THREADS)
1280
1281 // POSIX threads.
1282 #if !defined(BOOST_ASIO_HAS_PTHREADS)
1283 # if defined(BOOST_ASIO_HAS_THREADS)
1284 #  if defined(BOOST_ASIO_HAS_BOOST_CONFIG) && defined(BOOST_HAS_PTHREADS)
1285 #   define BOOST_ASIO_HAS_PTHREADS 1
1286 #  elif defined(_POSIX_THREADS) && (_POSIX_THREADS + 0 >= 0)
1287 #   define BOOST_ASIO_HAS_PTHREADS 1
1288 #  elif defined(__HAIKU__)
1289 #   define BOOST_ASIO_HAS_PTHREADS 1
1290 #  endif // defined(BOOST_ASIO_HAS_BOOST_CONFIG) && defined(BOOST_HAS_PTHREADS)
1291 # endif // defined(BOOST_ASIO_HAS_THREADS)
1292 #endif // !defined(BOOST_ASIO_HAS_PTHREADS)
1293
1294 // Helper to prevent macro expansion.
1295 #define BOOST_ASIO_PREVENT_MACRO_SUBSTITUTION
1296
1297 // Helper to define in-class constants.
1298 #if !defined(BOOST_ASIO_STATIC_CONSTANT)
1299 # if !defined(BOOST_ASIO_DISABLE_BOOST_STATIC_CONSTANT)
1300 #  define BOOST_ASIO_STATIC_CONSTANT(type, assignment) \
1301     BOOST_STATIC_CONSTANT(type, assignment)
1302 # else // !defined(BOOST_ASIO_DISABLE_BOOST_STATIC_CONSTANT)
1303 #  define BOOST_ASIO_STATIC_CONSTANT(type, assignment) \
1304     static const type assignment
1305 # endif // !defined(BOOST_ASIO_DISABLE_BOOST_STATIC_CONSTANT)
1306 #endif // !defined(BOOST_ASIO_STATIC_CONSTANT)
1307
1308 // Boost array library.
1309 #if !defined(BOOST_ASIO_HAS_BOOST_ARRAY)
1310 # if !defined(BOOST_ASIO_DISABLE_BOOST_ARRAY)
1311 #  define BOOST_ASIO_HAS_BOOST_ARRAY 1
1312 # endif // !defined(BOOST_ASIO_DISABLE_BOOST_ARRAY)
1313 #endif // !defined(BOOST_ASIO_HAS_BOOST_ARRAY)
1314
1315 // Boost assert macro.
1316 #if !defined(BOOST_ASIO_HAS_BOOST_ASSERT)
1317 # if !defined(BOOST_ASIO_DISABLE_BOOST_ASSERT)
1318 #  define BOOST_ASIO_HAS_BOOST_ASSERT 1
1319 # endif // !defined(BOOST_ASIO_DISABLE_BOOST_ASSERT)
1320 #endif // !defined(BOOST_ASIO_HAS_BOOST_ASSERT)
1321
1322 // Boost limits header.
1323 #if !defined(BOOST_ASIO_HAS_BOOST_LIMITS)
1324 # if !defined(BOOST_ASIO_DISABLE_BOOST_LIMITS)
1325 #  define BOOST_ASIO_HAS_BOOST_LIMITS 1
1326 # endif // !defined(BOOST_ASIO_DISABLE_BOOST_LIMITS)
1327 #endif // !defined(BOOST_ASIO_HAS_BOOST_LIMITS)
1328
1329 // Boost throw_exception function.
1330 #if !defined(BOOST_ASIO_HAS_BOOST_THROW_EXCEPTION)
1331 # if !defined(BOOST_ASIO_DISABLE_BOOST_THROW_EXCEPTION)
1332 #  define BOOST_ASIO_HAS_BOOST_THROW_EXCEPTION 1
1333 # endif // !defined(BOOST_ASIO_DISABLE_BOOST_THROW_EXCEPTION)
1334 #endif // !defined(BOOST_ASIO_HAS_BOOST_THROW_EXCEPTION)
1335
1336 // Boost regex library.
1337 #if !defined(BOOST_ASIO_HAS_BOOST_REGEX)
1338 # if !defined(BOOST_ASIO_DISABLE_BOOST_REGEX)
1339 #  define BOOST_ASIO_HAS_BOOST_REGEX 1
1340 # endif // !defined(BOOST_ASIO_DISABLE_BOOST_REGEX)
1341 #endif // !defined(BOOST_ASIO_HAS_BOOST_REGEX)
1342
1343 // Boost bind function.
1344 #if !defined(BOOST_ASIO_HAS_BOOST_BIND)
1345 # if !defined(BOOST_ASIO_DISABLE_BOOST_BIND)
1346 #  define BOOST_ASIO_HAS_BOOST_BIND 1
1347 # endif // !defined(BOOST_ASIO_DISABLE_BOOST_BIND)
1348 #endif // !defined(BOOST_ASIO_HAS_BOOST_BIND)
1349
1350 // Boost's BOOST_WORKAROUND macro.
1351 #if !defined(BOOST_ASIO_HAS_BOOST_WORKAROUND)
1352 # if !defined(BOOST_ASIO_DISABLE_BOOST_WORKAROUND)
1353 #  define BOOST_ASIO_HAS_BOOST_WORKAROUND 1
1354 # endif // !defined(BOOST_ASIO_DISABLE_BOOST_WORKAROUND)
1355 #endif // !defined(BOOST_ASIO_HAS_BOOST_WORKAROUND)
1356
1357 // Microsoft Visual C++'s secure C runtime library.
1358 #if !defined(BOOST_ASIO_HAS_SECURE_RTL)
1359 # if !defined(BOOST_ASIO_DISABLE_SECURE_RTL)
1360 #  if defined(BOOST_ASIO_MSVC) \
1361     && (BOOST_ASIO_MSVC >= 1400) \
1362     && !defined(UNDER_CE)
1363 #   define BOOST_ASIO_HAS_SECURE_RTL 1
1364 #  endif // defined(BOOST_ASIO_MSVC)
1365          // && (BOOST_ASIO_MSVC >= 1400)
1366          // && !defined(UNDER_CE)
1367 # endif // !defined(BOOST_ASIO_DISABLE_SECURE_RTL)
1368 #endif // !defined(BOOST_ASIO_HAS_SECURE_RTL)
1369
1370 // Handler hooking. Disabled for ancient Borland C++ and gcc compilers.
1371 #if !defined(BOOST_ASIO_HAS_HANDLER_HOOKS)
1372 # if !defined(BOOST_ASIO_DISABLE_HANDLER_HOOKS)
1373 #  if defined(__GNUC__)
1374 #   if (__GNUC__ >= 3)
1375 #    define BOOST_ASIO_HAS_HANDLER_HOOKS 1
1376 #   endif // (__GNUC__ >= 3)
1377 #  elif !defined(__BORLANDC__)
1378 #   define BOOST_ASIO_HAS_HANDLER_HOOKS 1
1379 #  endif // !defined(__BORLANDC__)
1380 # endif // !defined(BOOST_ASIO_DISABLE_HANDLER_HOOKS)
1381 #endif // !defined(BOOST_ASIO_HAS_HANDLER_HOOKS)
1382
1383 // Support for the __thread keyword extension.
1384 #if !defined(BOOST_ASIO_DISABLE_THREAD_KEYWORD_EXTENSION)
1385 # if defined(__linux__)
1386 #  if defined(__GNUC__) && (defined(__i386__) || defined(__x86_64__))
1387 #   if ((__GNUC__ == 3) && (__GNUC_MINOR__ >= 3)) || (__GNUC__ > 3)
1388 #    if !defined(__INTEL_COMPILER) && !defined(__ICL) \
1389        && !(defined(__clang__) && defined(__ANDROID__))
1390 #     define BOOST_ASIO_HAS_THREAD_KEYWORD_EXTENSION 1
1391 #     define BOOST_ASIO_THREAD_KEYWORD __thread
1392 #    elif defined(__INTEL_COMPILER) && (__INTEL_COMPILER >= 1100)
1393 #     define BOOST_ASIO_HAS_THREAD_KEYWORD_EXTENSION 1
1394 #    endif // defined(__INTEL_COMPILER) && (__INTEL_COMPILER >= 1100)
1395            // && !(defined(__clang__) && defined(__ANDROID__))
1396 #   endif // ((__GNUC__ == 3) && (__GNUC_MINOR__ >= 3)) || (__GNUC__ > 3)
1397 #  endif // defined(__GNUC__) && (defined(__i386__) || defined(__x86_64__))
1398 # endif // defined(__linux__)
1399 # if defined(BOOST_ASIO_MSVC) && defined(BOOST_ASIO_WINDOWS_RUNTIME)
1400 #  if (_MSC_VER >= 1700)
1401 #   define BOOST_ASIO_HAS_THREAD_KEYWORD_EXTENSION 1
1402 #   define BOOST_ASIO_THREAD_KEYWORD __declspec(thread)
1403 #  endif // (_MSC_VER >= 1700)
1404 # endif // defined(BOOST_ASIO_MSVC) && defined(BOOST_ASIO_WINDOWS_RUNTIME)
1405 #endif // !defined(BOOST_ASIO_DISABLE_THREAD_KEYWORD_EXTENSION)
1406 #if !defined(BOOST_ASIO_THREAD_KEYWORD)
1407 # define BOOST_ASIO_THREAD_KEYWORD __thread
1408 #endif // !defined(BOOST_ASIO_THREAD_KEYWORD)
1409
1410 // Support for POSIX ssize_t typedef.
1411 #if !defined(BOOST_ASIO_DISABLE_SSIZE_T)
1412 # if defined(__linux__) \
1413    || (defined(__MACH__) && defined(__APPLE__))
1414 #  define BOOST_ASIO_HAS_SSIZE_T 1
1415 # endif // defined(__linux__)
1416         //   || (defined(__MACH__) && defined(__APPLE__))
1417 #endif // !defined(BOOST_ASIO_DISABLE_SSIZE_T)
1418
1419 // Helper macros to manage transition away from error_code return values.
1420 #if defined(BOOST_ASIO_NO_DEPRECATED)
1421 # define BOOST_ASIO_SYNC_OP_VOID void
1422 # define BOOST_ASIO_SYNC_OP_VOID_RETURN(e) return
1423 #else // defined(BOOST_ASIO_NO_DEPRECATED)
1424 # define BOOST_ASIO_SYNC_OP_VOID boost::system::error_code
1425 # define BOOST_ASIO_SYNC_OP_VOID_RETURN(e) return e
1426 #endif // defined(BOOST_ASIO_NO_DEPRECATED)
1427
1428 // Newer gcc, clang need special treatment to suppress unused typedef warnings.
1429 #if defined(__clang__)
1430 # if defined(__apple_build_version__)
1431 #  if (__clang_major__ >= 7)
1432 #   define BOOST_ASIO_UNUSED_TYPEDEF __attribute__((__unused__))
1433 #  endif // (__clang_major__ >= 7)
1434 # elif ((__clang_major__ == 3) && (__clang_minor__ >= 6)) \
1435     || (__clang_major__ > 3)
1436 #  define BOOST_ASIO_UNUSED_TYPEDEF __attribute__((__unused__))
1437 # endif // ((__clang_major__ == 3) && (__clang_minor__ >= 6))
1438         //   || (__clang_major__ > 3)
1439 #elif defined(__GNUC__)
1440 # if ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 8)) || (__GNUC__ > 4)
1441 #  define BOOST_ASIO_UNUSED_TYPEDEF __attribute__((__unused__))
1442 # endif // ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 8)) || (__GNUC__ > 4)
1443 #endif // defined(__GNUC__)
1444 #if !defined(BOOST_ASIO_UNUSED_TYPEDEF)
1445 # define BOOST_ASIO_UNUSED_TYPEDEF
1446 #endif // !defined(BOOST_ASIO_UNUSED_TYPEDEF)
1447
1448 // Some versions of gcc generate spurious warnings about unused variables.
1449 #if defined(__GNUC__)
1450 # if (__GNUC__ >= 4)
1451 #  define BOOST_ASIO_UNUSED_VARIABLE __attribute__((__unused__))
1452 # endif // (__GNUC__ >= 4)
1453 #endif // defined(__GNUC__)
1454 #if !defined(BOOST_ASIO_UNUSED_VARIABLE)
1455 # define BOOST_ASIO_UNUSED_VARIABLE
1456 #endif // !defined(BOOST_ASIO_UNUSED_VARIABLE)
1457
1458 // Support co_await on compilers known to allow it.
1459 #if !defined(BOOST_ASIO_HAS_CO_AWAIT)
1460 # if !defined(BOOST_ASIO_DISABLE_CO_AWAIT)
1461 #  if defined(BOOST_ASIO_MSVC)
1462 #   if (_MSC_FULL_VER >= 190023506)
1463 #    if defined(_RESUMABLE_FUNCTIONS_SUPPORTED)
1464 #     define BOOST_ASIO_HAS_CO_AWAIT 1
1465 #    endif // defined(_RESUMABLE_FUNCTIONS_SUPPORTED)
1466 #   endif // (_MSC_FULL_VER >= 190023506)
1467 #  endif // defined(BOOST_ASIO_MSVC)
1468 # endif // !defined(BOOST_ASIO_DISABLE_CO_AWAIT)
1469 # if defined(__clang__)
1470 #  if (__cplusplus >= 201703) && (__cpp_coroutines >= 201703)
1471 #   if __has_include(<experimental/coroutine>)
1472 #    define BOOST_ASIO_HAS_CO_AWAIT 1
1473 #   endif // __has_include(<experimental/coroutine>)
1474 #  endif // (__cplusplus >= 201703) && (__cpp_coroutines >= 201703)
1475 # endif // defined(__clang__)
1476 #endif // !defined(BOOST_ASIO_HAS_CO_AWAIT)
1477
1478 #endif // BOOST_ASIO_DETAIL_CONFIG_HPP