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 // __ev is expected to be an error in the generic_category domain (e.g. from 43 // errno, or std::errc::*), not system_category (e.g. from windows syscalls). 44 [[__noreturn__]] _LIBCPP_EXPORTED_FROM_ABI void __throw_system_error(int __ev, const char* __what_arg); 45 46 [[__noreturn__]] _LIBCPP_HIDE_FROM_ABI inline void __throw_system_error(error_code __ec, const char* __what_arg) { 47 #if _LIBCPP_HAS_EXCEPTIONS 48 throw system_error(__ec, __what_arg); 49 #else 50 _LIBCPP_VERBOSE_ABORT( 51 "system_error was thrown in -fno-exceptions mode with error %i and message \"%s\"", __ec.value(), __what_arg); 52 #endif 53 } 54 55 _LIBCPP_END_NAMESPACE_STD 56 57 #endif // _LIBCPP___SYSTEM_ERROR_SYSTEM_ERROR_H 58