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64 lines
1.9 KiB
C++
64 lines
1.9 KiB
C++
// -*- C++ -*-
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//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef HAVE_DEPENDENT_EH_ABI
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# error this header may only be used with libc++abi or libcxxrt
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#endif
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namespace std {
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exception_ptr::~exception_ptr() noexcept { __cxa_decrement_exception_refcount(__ptr_); }
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exception_ptr::exception_ptr(const exception_ptr& other) noexcept : __ptr_(other.__ptr_) {
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__cxa_increment_exception_refcount(__ptr_);
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}
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exception_ptr& exception_ptr::operator=(const exception_ptr& other) noexcept {
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if (__ptr_ != other.__ptr_) {
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__cxa_increment_exception_refcount(other.__ptr_);
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__cxa_decrement_exception_refcount(__ptr_);
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__ptr_ = other.__ptr_;
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}
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return *this;
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}
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exception_ptr exception_ptr::__from_native_exception_pointer(void* __e) noexcept {
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exception_ptr ptr;
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ptr.__ptr_ = __e;
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__cxa_increment_exception_refcount(ptr.__ptr_);
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return ptr;
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}
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nested_exception::nested_exception() noexcept : __ptr_(current_exception()) {}
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nested_exception::~nested_exception() noexcept {}
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_LIBCPP_NORETURN void nested_exception::rethrow_nested() const {
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if (__ptr_ == nullptr)
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terminate();
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rethrow_exception(__ptr_);
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}
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exception_ptr current_exception() noexcept {
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// be nicer if there was a constructor that took a ptr, then
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// this whole function would be just:
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// return exception_ptr(__cxa_current_primary_exception());
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exception_ptr ptr;
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ptr.__ptr_ = __cxa_current_primary_exception();
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return ptr;
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}
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_LIBCPP_NORETURN void rethrow_exception(exception_ptr p) {
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__cxa_rethrow_primary_exception(p.__ptr_);
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// if p.__ptr_ is NULL, above returns so we terminate
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terminate();
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}
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} // namespace std
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