| // -*- 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 |