1//===------------------------- cxa_handlers.cpp ---------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//
8// This file implements the functionality associated with the terminate_handler,
9// unexpected_handler, and new_handler.
10//===----------------------------------------------------------------------===//
11
12#ifndef _CXA_HANDLERS_H
13#define _CXA_HANDLERS_H
14
15#include <__cxxabi_config.h>
16
17#include <exception>
18
19namespace std
20{
21
22_LIBCXXABI_HIDDEN _LIBCXXABI_NORETURN
23void
24__unexpected(unexpected_handler func);
25
26_LIBCXXABI_HIDDEN _LIBCXXABI_NORETURN
27void
28__terminate(terminate_handler func) _NOEXCEPT;
29
30} // std
31
32extern "C"
33{
34
35_LIBCXXABI_DATA_VIS extern void (*__cxa_terminate_handler)();
36_LIBCXXABI_DATA_VIS extern void (*__cxa_unexpected_handler)();
37_LIBCXXABI_DATA_VIS extern void (*__cxa_new_handler)();
38
39/*
40
41 At some point in the future these three symbols will become
42 C++11 atomic variables:
43
44 extern std::atomic<std::terminate_handler> __cxa_terminate_handler;
45 extern std::atomic<std::unexpected_handler> __cxa_unexpected_handler;
46 extern std::atomic<std::new_handler> __cxa_new_handler;
47
48 This change will not impact their ABI. But it will allow for a
49 portable performance optimization.
50
51*/
52
53} // extern "C"
54
55#endif // _CXA_HANDLERS_H
56