libcxx/include/__system_error/system_error.h

   1 // -*- C++ -*-
   2 //===----------------------------------------------------------------------===//
   3 //
   4 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   5 // See https://llvm.org/LICENSE.txt for license information.
   6 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   7 //
   8 //===----------------------------------------------------------------------===//
   9
  10 #ifndef _LIBCPP___SYSTEM_ERROR_SYSTEM_ERROR_H
  11 #define _LIBCPP___SYSTEM_ERROR_SYSTEM_ERROR_H
  12
  13 #include <__config>
  14 #include <__system_error/error_category.h>
  15 #include <__system_error/error_code.h>
  16 #include <__verbose_abort>
  17 #include <stdexcept>
  18 #include <string>
  19
  20 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
  21 #  pragma GCC system_header
  22 #endif
  23
  24 _LIBCPP_BEGIN_NAMESPACE_STD
  25
  26 class _LIBCPP_EXPORTED_FROM_ABI system_error : public runtime_error {
  27   error_code __ec_;
  28
  29 public:
  30   system_error(error_code __ec, const string& __what_arg);
  31   system_error(error_code __ec, const char* __what_arg);
  32   system_error(error_code __ec);
  33   system_error(int __ev, const error_category& __ecat, const string& __what_arg);
  34   system_error(int __ev, const error_category& __ecat, const char* __what_arg);
  35   system_error(int __ev, const error_category& __ecat);
  36   _LIBCPP_HIDE_FROM_ABI system_error(const system_error&) _NOEXCEPT = default;
  37   ~system_error() _NOEXCEPT override;
  38
  39   _LIBCPP_HIDE_FROM_ABI const error_code& code() const _NOEXCEPT { return __ec_; }
  40 };
  41
  42 [[__noreturn__]] _LIBCPP_HIDE_FROM_ABI inline void __throw_system_error(error_code __ec, const char* __what_arg) {
  43 #if _LIBCPP_HAS_EXCEPTIONS
  44   throw system_error(__ec, __what_arg);
  45 #else
  46   _LIBCPP_VERBOSE_ABORT(
  47       "system_error was thrown in -fno-exceptions mode with error %i and message \"%s\"", __ec.value(), __what_arg);
  48 #endif
  49 }
  50
  51 _LIBCPP_END_NAMESPACE_STD
  52
  53 #endif // _LIBCPP___SYSTEM_ERROR_SYSTEM_ERROR_H