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https://github.com/ziglang/zig.git
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06ee65af9e
release/18.x branch, commit 78b99c73ee4b96fe9ce0e294d4632326afb2db42 This adds the flag `-D_LIBCPP_HARDENING_MODE` which is determined based on the Zig optimization mode. This commit also fixes libunwind, libcxx, and libcxxabi to properly report sub compilation errors.
114 lines
3.4 KiB
C++
Vendored
114 lines
3.4 KiB
C++
Vendored
//===----------------------------------------------------------------------===//
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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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// For information see https://libcxx.llvm.org/DesignDocs/TimeZone.html
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#include <chrono>
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#include <__mutex/unique_lock.h>
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#include <forward_list>
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// When threads are not available the locking is not required.
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#ifndef _LIBCPP_HAS_NO_THREADS
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# include <shared_mutex>
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#endif
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_LIBCPP_BEGIN_NAMESPACE_STD
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namespace chrono {
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//===----------------------------------------------------------------------===//
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// Private API
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//===----------------------------------------------------------------------===//
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class tzdb_list::__impl {
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public:
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explicit __impl(tzdb&& __tzdb) { __tzdb_.push_front(std::move(__tzdb)); }
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using const_iterator = tzdb_list::const_iterator;
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const tzdb& front() const noexcept {
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#ifndef _LIBCPP_HAS_NO_THREADS
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shared_lock __lock{__mutex_};
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#endif
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return __tzdb_.front();
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}
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const_iterator erase_after(const_iterator __p) {
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#ifndef _LIBCPP_HAS_NO_THREADS
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unique_lock __lock{__mutex_};
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#endif
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return __tzdb_.erase_after(__p);
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}
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tzdb& __emplace_front(tzdb&& __tzdb) {
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#ifndef _LIBCPP_HAS_NO_THREADS
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unique_lock __lock{__mutex_};
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#endif
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return __tzdb_.emplace_front(std::move(__tzdb));
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}
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const_iterator begin() const noexcept {
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#ifndef _LIBCPP_HAS_NO_THREADS
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shared_lock __lock{__mutex_};
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#endif
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return __tzdb_.begin();
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}
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const_iterator end() const noexcept {
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// forward_list<T>::end does not access the list, so no need to take a lock.
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return __tzdb_.end();
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}
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const_iterator cbegin() const noexcept { return begin(); }
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const_iterator cend() const noexcept { return end(); }
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private:
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#ifndef _LIBCPP_HAS_NO_THREADS
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mutable shared_mutex __mutex_;
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#endif
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forward_list<tzdb> __tzdb_;
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};
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//===----------------------------------------------------------------------===//
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// Public API
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//===----------------------------------------------------------------------===//
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_LIBCPP_EXPORTED_FROM_ABI tzdb_list::tzdb_list(tzdb&& __tzdb) : __impl_{new __impl(std::move(__tzdb))} {}
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_LIBCPP_EXPORTED_FROM_ABI tzdb_list::~tzdb_list() { delete __impl_; }
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_LIBCPP_NODISCARD_EXT _LIBCPP_EXPORTED_FROM_ABI const tzdb& tzdb_list::front() const noexcept {
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return __impl_->front();
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}
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_LIBCPP_EXPORTED_FROM_ABI tzdb_list::const_iterator tzdb_list::erase_after(const_iterator __p) {
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return __impl_->erase_after(__p);
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}
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_LIBCPP_EXPORTED_FROM_ABI tzdb& tzdb_list::__emplace_front(tzdb&& __tzdb) {
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return __impl_->__emplace_front(std::move(__tzdb));
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}
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_LIBCPP_NODISCARD_EXT _LIBCPP_EXPORTED_FROM_ABI tzdb_list::const_iterator tzdb_list::begin() const noexcept {
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return __impl_->begin();
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}
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_LIBCPP_NODISCARD_EXT _LIBCPP_EXPORTED_FROM_ABI tzdb_list::const_iterator tzdb_list::end() const noexcept {
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return __impl_->end();
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}
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_LIBCPP_NODISCARD_EXT _LIBCPP_EXPORTED_FROM_ABI tzdb_list::const_iterator tzdb_list::cbegin() const noexcept {
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return __impl_->cbegin();
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}
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_LIBCPP_NODISCARD_EXT _LIBCPP_EXPORTED_FROM_ABI tzdb_list::const_iterator tzdb_list::cend() const noexcept {
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return __impl_->cend();
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}
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} // namespace chrono
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_LIBCPP_END_NAMESPACE_STD
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