1// -*- C++ -*- 2//===----------------------------------------------------------------------===// 3// 4// The LLVM Compiler Infrastructure 5// 6// This file is dual licensed under the MIT and the University of Illinois Open 7// Source Licenses. See LICENSE.TXT for details. 8// 9//===----------------------------------------------------------------------===// 10 11#include <cstdio> 12 13namespace std { 14 15_LIBCPP_SAFE_STATIC static std::terminate_handler __terminate_handler; 16_LIBCPP_SAFE_STATIC static std::unexpected_handler __unexpected_handler; 17 18 19// libcxxrt provides implementations of these functions itself. 20unexpected_handler 21set_unexpected(unexpected_handler func) _NOEXCEPT 22{ 23 return __libcpp_atomic_exchange(&__unexpected_handler, func); 24} 25 26unexpected_handler 27get_unexpected() _NOEXCEPT 28{ 29 return __libcpp_atomic_load(&__unexpected_handler); 30 31} 32 33_LIBCPP_NORETURN 34void unexpected() 35{ 36 (*get_unexpected())(); 37 // unexpected handler should not return 38 terminate(); 39} 40 41terminate_handler 42set_terminate(terminate_handler func) _NOEXCEPT 43{ 44 return __libcpp_atomic_exchange(&__terminate_handler, func); 45} 46 47terminate_handler 48get_terminate() _NOEXCEPT 49{ 50 return __libcpp_atomic_load(&__terminate_handler); 51} 52 53#ifndef __EMSCRIPTEN__ // We provide this in JS 54_LIBCPP_NORETURN 55void 56terminate() _NOEXCEPT 57{ 58#ifndef _LIBCPP_NO_EXCEPTIONS 59 try 60 { 61#endif // _LIBCPP_NO_EXCEPTIONS 62 (*get_terminate())(); 63 // handler should not return 64 fprintf(stderr, "terminate_handler unexpectedly returned\n"); 65 ::abort(); 66#ifndef _LIBCPP_NO_EXCEPTIONS 67 } 68 catch (...) 69 { 70 // handler should not throw exception 71 fprintf(stderr, "terminate_handler unexpectedly threw an exception\n"); 72 ::abort(); 73 } 74#endif // _LIBCPP_NO_EXCEPTIONS 75} 76#endif // !__EMSCRIPTEN__ 77 78#if !defined(__EMSCRIPTEN__) 79bool uncaught_exception() _NOEXCEPT { return uncaught_exceptions() > 0; } 80 81int uncaught_exceptions() _NOEXCEPT 82{ 83#warning uncaught_exception not yet implemented 84 fprintf(stderr, "uncaught_exceptions not yet implemented\n"); 85 ::abort(); 86} 87#endif // !__EMSCRIPTEN__ 88 89 90exception::~exception() _NOEXCEPT 91{ 92} 93 94const char* exception::what() const _NOEXCEPT 95{ 96 return "std::exception"; 97} 98 99bad_exception::~bad_exception() _NOEXCEPT 100{ 101} 102 103const char* bad_exception::what() const _NOEXCEPT 104{ 105 return "std::bad_exception"; 106} 107 108 109bad_alloc::bad_alloc() _NOEXCEPT 110{ 111} 112 113bad_alloc::~bad_alloc() _NOEXCEPT 114{ 115} 116 117const char* 118bad_alloc::what() const _NOEXCEPT 119{ 120 return "std::bad_alloc"; 121} 122 123bad_array_new_length::bad_array_new_length() _NOEXCEPT 124{ 125} 126 127bad_array_new_length::~bad_array_new_length() _NOEXCEPT 128{ 129} 130 131const char* 132bad_array_new_length::what() const _NOEXCEPT 133{ 134 return "bad_array_new_length"; 135} 136 137bad_cast::bad_cast() _NOEXCEPT 138{ 139} 140 141bad_typeid::bad_typeid() _NOEXCEPT 142{ 143} 144 145bad_cast::~bad_cast() _NOEXCEPT 146{ 147} 148 149const char* 150bad_cast::what() const _NOEXCEPT 151{ 152 return "std::bad_cast"; 153} 154 155bad_typeid::~bad_typeid() _NOEXCEPT 156{ 157} 158 159const char* 160bad_typeid::what() const _NOEXCEPT 161{ 162 return "std::bad_typeid"; 163} 164 165} // namespace std 166