libcxx/include/__exception/operations.h

//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

#ifndef _LIBCPP___EXCEPTION_OPERATIONS_H
#define _LIBCPP___EXCEPTION_OPERATIONS_H

#include <__config>

#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#  pragma GCC system_header
#endif

namespace std { // purposefully not using versioning namespace
#if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_UNEXPECTED_FUNCTIONS) ||                             \
    defined(_LIBCPP_BUILDING_LIBRARY)
using unexpected_handler = void (*)();
_LIBCPP_EXPORTED_FROM_ABI unexpected_handler set_unexpected(unexpected_handler) _NOEXCEPT;
_LIBCPP_EXPORTED_FROM_ABI unexpected_handler get_unexpected() _NOEXCEPT;
[[__noreturn__]] _LIBCPP_EXPORTED_FROM_ABI void unexpected();
#endif

using terminate_handler = void (*)();
_LIBCPP_EXPORTED_FROM_ABI terminate_handler set_terminate(terminate_handler) _NOEXCEPT;
_LIBCPP_EXPORTED_FROM_ABI terminate_handler get_terminate() _NOEXCEPT;

#if _LIBCPP_STD_VER <= 17 || defined(_LIBCPP_ENABLE_CXX20_REMOVED_UNCAUGHT_EXCEPTION)
_LIBCPP_EXPORTED_FROM_ABI _LIBCPP_DEPRECATED_IN_CXX17 bool uncaught_exception() _NOEXCEPT;
#endif // _LIBCPP_STD_VER <= 17 || defined(_LIBCPP_ENABLE_CXX20_REMOVED_UNCAUGHT_EXCEPTION)
_LIBCPP_EXPORTED_FROM_ABI int uncaught_exceptions() _NOEXCEPT;

class _LIBCPP_EXPORTED_FROM_ABI exception_ptr;

_LIBCPP_EXPORTED_FROM_ABI exception_ptr current_exception() _NOEXCEPT;
[[__noreturn__]] _LIBCPP_EXPORTED_FROM_ABI void rethrow_exception(exception_ptr);
} // namespace std

#endif // _LIBCPP___EXCEPTION_OPERATIONS_H