1 //===------------------------- cxa_handlers.cpp ---------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is dual licensed under the MIT and the University of Illinois Open 6 // Source Licenses. See LICENSE.TXT for details. 7 // 8 // 9 // This file implements the functionality associated with the terminate_handler, 10 // unexpected_handler, and new_handler. 11 //===----------------------------------------------------------------------===// 12 13 #ifndef _CXA_HANDLERS_H 14 #define _CXA_HANDLERS_H 15 16 #include <exception> 17 18 namespace std 19 { 20 21 __attribute__((visibility("hidden"), noreturn)) 22 void 23 __unexpected(unexpected_handler func); 24 25 __attribute__((visibility("hidden"), noreturn)) 26 void 27 __terminate(terminate_handler func) _NOEXCEPT; 28 29 } // std 30 31 extern "C" 32 { 33 34 extern void (*__cxa_terminate_handler)(); 35 extern void (*__cxa_unexpected_handler)(); 36 extern void (*__cxa_new_handler)(); 37 38 /* 39 40 At some point in the future these three symbols will become 41 C++11 atomic variables: 42 43 extern std::atomic<std::terminate_handler> __cxa_terminate_handler; 44 extern std::atomic<std::unexpected_handler> __cxa_unexpected_handler; 45 extern std::atomic<std::new_handler> __cxa_new_handler; 46 47 This change will not impact their ABI. But it will allow for a 48 portable performance optimization. 49 50 */ 51 52 } // extern "C" 53 54 #endif // _CXA_HANDLERS_H 55