File size: 2,259 Bytes
8ae5fc5 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 | // -*- C++ -*-
//===----------------------------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
// libsupc++ does not implement the dependent EH ABI and the functionality
// it uses to implement std::exception_ptr (which it declares as an alias of
// std::__exception_ptr::exception_ptr) is not directly exported to clients. So
// we have little choice but to hijack std::__exception_ptr::exception_ptr's
// (which fortunately has the same layout as our std::exception_ptr) copy
// constructor, assignment operator and destructor (which are part of its
// stable ABI), and its rethrow_exception(std::__exception_ptr::exception_ptr)
// function.
namespace std {
namespace __exception_ptr
{
struct exception_ptr
{
void* __ptr_;
exception_ptr(const exception_ptr&) _NOEXCEPT;
exception_ptr& operator=(const exception_ptr&) _NOEXCEPT;
~exception_ptr() _NOEXCEPT;
};
}
_LIBCUDACXX_NORETURN void rethrow_exception(__exception_ptr::exception_ptr);
exception_ptr::~exception_ptr() _NOEXCEPT
{
reinterpret_cast<__exception_ptr::exception_ptr*>(this)->~exception_ptr();
}
exception_ptr::exception_ptr(const exception_ptr& other) _NOEXCEPT
: __ptr_(other.__ptr_)
{
new (reinterpret_cast<void*>(this)) __exception_ptr::exception_ptr(
reinterpret_cast<const __exception_ptr::exception_ptr&>(other));
}
exception_ptr& exception_ptr::operator=(const exception_ptr& other) _NOEXCEPT
{
*reinterpret_cast<__exception_ptr::exception_ptr*>(this) =
reinterpret_cast<const __exception_ptr::exception_ptr&>(other);
return *this;
}
nested_exception::nested_exception() _NOEXCEPT
: __ptr_(current_exception())
{
}
_LIBCUDACXX_NORETURN
void
nested_exception::rethrow_nested() const
{
if (__ptr_ == nullptr)
terminate();
rethrow_exception(__ptr_);
}
_LIBCUDACXX_NORETURN
void rethrow_exception(exception_ptr p)
{
rethrow_exception(reinterpret_cast<__exception_ptr::exception_ptr&>(p));
}
} // namespace std
|