1// -*- C++ -*-
2//===----------------------------------------------------------------------===//
3//
4// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
5// See https://llvm.org/LICENSE.txt for license information.
6// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7//
8//===----------------------------------------------------------------------===//
9
10#ifndef HAVE_DEPENDENT_EH_ABI
11# error this header may only be used with libc++abi or libcxxrt
12#endif
13
14namespace std {
15
16exception_ptr::~exception_ptr() noexcept { __cxa_decrement_exception_refcount(primary_exception: __ptr_); }
17
18exception_ptr::exception_ptr(const exception_ptr& other) noexcept : __ptr_(other.__ptr_) {
19 __cxa_increment_exception_refcount(primary_exception: __ptr_);
20}
21
22exception_ptr& exception_ptr::operator=(const exception_ptr& other) noexcept {
23 if (__ptr_ != other.__ptr_) {
24 __cxa_increment_exception_refcount(primary_exception: other.__ptr_);
25 __cxa_decrement_exception_refcount(primary_exception: __ptr_);
26 __ptr_ = other.__ptr_;
27 }
28 return *this;
29}
30
31exception_ptr exception_ptr::__from_native_exception_pointer(void* __e) noexcept {
32 exception_ptr ptr;
33 ptr.__ptr_ = __e;
34 __cxa_increment_exception_refcount(primary_exception: ptr.__ptr_);
35
36 return ptr;
37}
38
39nested_exception::nested_exception() noexcept : __ptr_(current_exception()) {}
40
41nested_exception::~nested_exception() noexcept {}
42
43void nested_exception::rethrow_nested() const {
44 if (__ptr_ == nullptr)
45 terminate();
46 rethrow_exception(__ptr_);
47}
48
49exception_ptr current_exception() noexcept {
50 // be nicer if there was a constructor that took a ptr, then
51 // this whole function would be just:
52 // return exception_ptr(__cxa_current_primary_exception());
53 exception_ptr ptr;
54 ptr.__ptr_ = __cxa_current_primary_exception();
55 return ptr;
56}
57
58void rethrow_exception(exception_ptr p) {
59 __cxa_rethrow_primary_exception(primary_exception: p.__ptr_);
60 // if p.__ptr_ is NULL, above returns so we terminate
61 terminate();
62}
63
64} // namespace std
65