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// -*- 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
//
//===----------------------------------------------------------------------===//
#ifndef HAVE_DEPENDENT_EH_ABI
#error this header may only be used with libc++abi or libcxxrt
#endif
namespace std {
exception_ptr::~exception_ptr() noexcept {
__cxa_decrement_exception_refcount(__ptr_);
}
exception_ptr::exception_ptr(const exception_ptr& other) noexcept
: __ptr_(other.__ptr_)
{
__cxa_increment_exception_refcount(__ptr_);
}
exception_ptr& exception_ptr::operator=(const exception_ptr& other) noexcept
{
if (__ptr_ != other.__ptr_)
{
__cxa_increment_exception_refcount(other.__ptr_);
__cxa_decrement_exception_refcount(__ptr_);
__ptr_ = other.__ptr_;
}
return *this;
}
nested_exception::nested_exception() noexcept
: __ptr_(current_exception())
{
}
nested_exception::~nested_exception() noexcept
{
}
_LIBCPP_NORETURN
void
nested_exception::rethrow_nested() const
{
if (__ptr_ == nullptr)
terminate();
rethrow_exception(__ptr_);
}
exception_ptr current_exception() noexcept
{
// be nicer if there was a constructor that took a ptr, then
// this whole function would be just:
// return exception_ptr(__cxa_current_primary_exception());
exception_ptr ptr;
ptr.__ptr_ = __cxa_current_primary_exception();
return ptr;
}
_LIBCPP_NORETURN
void rethrow_exception(exception_ptr p)
{
__cxa_rethrow_primary_exception(p.__ptr_);
// if p.__ptr_ is NULL, above returns so we terminate
terminate();
}
} // namespace std
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