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diff --git a/third_party/libcxx/include/c++/v1/condition_variable b/third_party/libcxx/include/c++/v1/condition_variable
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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 _LIBCPP_CONDITION_VARIABLE
-#define _LIBCPP_CONDITION_VARIABLE
-
-/*
- condition_variable synopsis
-
-namespace std
-{
-
-enum class cv_status { no_timeout, timeout };
-
-class condition_variable
-{
-public:
- condition_variable();
- ~condition_variable();
-
- condition_variable(const condition_variable&) = delete;
- condition_variable& operator=(const condition_variable&) = delete;
-
- void notify_one() noexcept;
- void notify_all() noexcept;
-
- void wait(unique_lock<mutex>& lock);
- template <class Predicate>
- void wait(unique_lock<mutex>& lock, Predicate pred);
-
- template <class Clock, class Duration>
- cv_status
- wait_until(unique_lock<mutex>& lock,
- const chrono::time_point<Clock, Duration>& abs_time);
-
- template <class Clock, class Duration, class Predicate>
- bool
- wait_until(unique_lock<mutex>& lock,
- const chrono::time_point<Clock, Duration>& abs_time,
- Predicate pred);
-
- template <class Rep, class Period>
- cv_status
- wait_for(unique_lock<mutex>& lock,
- const chrono::duration<Rep, Period>& rel_time);
-
- template <class Rep, class Period, class Predicate>
- bool
- wait_for(unique_lock<mutex>& lock,
- const chrono::duration<Rep, Period>& rel_time,
- Predicate pred);
-
- typedef pthread_cond_t* native_handle_type;
- native_handle_type native_handle();
-};
-
-void notify_all_at_thread_exit(condition_variable& cond, unique_lock<mutex> lk);
-
-class condition_variable_any
-{
-public:
- condition_variable_any();
- ~condition_variable_any();
-
- condition_variable_any(const condition_variable_any&) = delete;
- condition_variable_any& operator=(const condition_variable_any&) = delete;
-
- void notify_one() noexcept;
- void notify_all() noexcept;
-
- template <class Lock>
- void wait(Lock& lock);
- template <class Lock, class Predicate>
- void wait(Lock& lock, Predicate pred);
-
- template <class Lock, class Clock, class Duration>
- cv_status
- wait_until(Lock& lock,
- const chrono::time_point<Clock, Duration>& abs_time);
-
- template <class Lock, class Clock, class Duration, class Predicate>
- bool
- wait_until(Lock& lock,
- const chrono::time_point<Clock, Duration>& abs_time,
- Predicate pred);
-
- template <class Lock, class Rep, class Period>
- cv_status
- wait_for(Lock& lock,
- const chrono::duration<Rep, Period>& rel_time);
-
- template <class Lock, class Rep, class Period, class Predicate>
- bool
- wait_for(Lock& lock,
- const chrono::duration<Rep, Period>& rel_time,
- Predicate pred);
-
- // [thread.condvarany.intwait], interruptible waits
- template <class Lock, class Predicate>
- bool wait(Lock& lock, stop_token stoken, Predicate pred); // since C++20
-
- template <class Lock, class Clock, class Duration, class Predicate>
- bool wait_until(Lock& lock, stop_token stoken,
- const chrono::time_point<Clock, Duration>& abs_time, Predicate pred); // since C++20
-
- template <class Lock, class Rep, class Period, class Predicate>
- bool wait_for(Lock& lock, stop_token stoken,
- const chrono::duration<Rep, Period>& rel_time, Predicate pred); // since C++20
-};
-
-} // std
-
-*/
-
-#if __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)
-# include <__cxx03/condition_variable>
-#else
-# include <__chrono/duration.h>
-# include <__chrono/steady_clock.h>
-# include <__chrono/time_point.h>
-# include <__condition_variable/condition_variable.h>
-# include <__config>
-# include <__memory/shared_ptr.h>
-# include <__mutex/lock_guard.h>
-# include <__mutex/mutex.h>
-# include <__mutex/tag_types.h>
-# include <__mutex/unique_lock.h>
-# include <__stop_token/stop_callback.h>
-# include <__stop_token/stop_token.h>
-# include <__utility/move.h>
-# include <version>
-
-# if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-# pragma GCC system_header
-# endif
-
-_LIBCPP_PUSH_MACROS
-# include <__undef_macros>
-
-# if _LIBCPP_HAS_THREADS
-
-_LIBCPP_BEGIN_NAMESPACE_STD
-
-template <class _Lock>
-struct __unlock_guard {
- _Lock& __lock_;
-
- _LIBCPP_HIDE_FROM_ABI __unlock_guard(_Lock& __lock) : __lock_(__lock) { __lock_.unlock(); }
-
- _LIBCPP_HIDE_FROM_ABI ~__unlock_guard() _NOEXCEPT // turns exception to std::terminate
- {
- __lock_.lock();
- }
-
- __unlock_guard(const __unlock_guard&) = delete;
- __unlock_guard& operator=(const __unlock_guard&) = delete;
-};
-
-class _LIBCPP_EXPORTED_FROM_ABI condition_variable_any {
- condition_variable __cv_;
- shared_ptr<mutex> __mut_;
-
-public:
- _LIBCPP_HIDE_FROM_ABI condition_variable_any();
-
- _LIBCPP_HIDE_FROM_ABI void notify_one() _NOEXCEPT;
- _LIBCPP_HIDE_FROM_ABI void notify_all() _NOEXCEPT;
-
- template <class _Lock>
- _LIBCPP_HIDE_FROM_ABI void wait(_Lock& __lock) {
- shared_ptr<mutex> __mut = __mut_;
- unique_lock<mutex> __lk(*__mut);
- __unlock_guard<_Lock> __unlock(__lock);
- lock_guard<unique_lock<mutex> > __lx(__lk, adopt_lock_t());
- __cv_.wait(__lk);
- } // __mut_.unlock(), __lock.lock()
-
- template <class _Lock, class _Predicate>
- _LIBCPP_HIDE_FROM_ABI void wait(_Lock& __lock, _Predicate __pred);
-
- template <class _Lock, class _Clock, class _Duration>
- _LIBCPP_HIDE_FROM_ABI cv_status wait_until(_Lock& __lock, const chrono::time_point<_Clock, _Duration>& __t) {
- shared_ptr<mutex> __mut = __mut_;
- unique_lock<mutex> __lk(*__mut);
- __unlock_guard<_Lock> __unlock(__lock);
- lock_guard<unique_lock<mutex> > __lx(__lk, adopt_lock_t());
- return __cv_.wait_until(__lk, __t);
- } // __mut_.unlock(), __lock.lock()
-
- template <class _Lock, class _Clock, class _Duration, class _Predicate>
- bool _LIBCPP_HIDE_FROM_ABI
- wait_until(_Lock& __lock, const chrono::time_point<_Clock, _Duration>& __t, _Predicate __pred);
-
- template <class _Lock, class _Rep, class _Period>
- cv_status _LIBCPP_HIDE_FROM_ABI wait_for(_Lock& __lock, const chrono::duration<_Rep, _Period>& __d);
-
- template <class _Lock, class _Rep, class _Period, class _Predicate>
- bool _LIBCPP_HIDE_FROM_ABI wait_for(_Lock& __lock, const chrono::duration<_Rep, _Period>& __d, _Predicate __pred);
-
-# if _LIBCPP_STD_VER >= 20
-
- template <class _Lock, class _Predicate>
- _LIBCPP_HIDE_FROM_ABI bool wait(_Lock& __lock, stop_token __stoken, _Predicate __pred);
-
- template <class _Lock, class _Clock, class _Duration, class _Predicate>
- _LIBCPP_HIDE_FROM_ABI bool wait_until(
- _Lock& __lock, stop_token __stoken, const chrono::time_point<_Clock, _Duration>& __abs_time, _Predicate __pred);
-
- template <class _Lock, class _Rep, class _Period, class _Predicate>
- _LIBCPP_HIDE_FROM_ABI bool
- wait_for(_Lock& __lock, stop_token __stoken, const chrono::duration<_Rep, _Period>& __rel_time, _Predicate __pred);
-
-# endif // _LIBCPP_STD_VER >= 20
-};
-
-inline condition_variable_any::condition_variable_any() : __mut_(make_shared<mutex>()) {}
-
-inline void condition_variable_any::notify_one() _NOEXCEPT {
- { lock_guard<mutex> __lx(*__mut_); }
- __cv_.notify_one();
-}
-
-inline void condition_variable_any::notify_all() _NOEXCEPT {
- { lock_guard<mutex> __lx(*__mut_); }
- __cv_.notify_all();
-}
-
-template <class _Lock, class _Predicate>
-inline void condition_variable_any::wait(_Lock& __lock, _Predicate __pred) {
- while (!__pred())
- wait(__lock);
-}
-
-template <class _Lock, class _Clock, class _Duration, class _Predicate>
-inline bool
-condition_variable_any::wait_until(_Lock& __lock, const chrono::time_point<_Clock, _Duration>& __t, _Predicate __pred) {
- while (!__pred())
- if (wait_until(__lock, __t) == cv_status::timeout)
- return __pred();
- return true;
-}
-
-template <class _Lock, class _Rep, class _Period>
-inline cv_status condition_variable_any::wait_for(_Lock& __lock, const chrono::duration<_Rep, _Period>& __d) {
- return wait_until(__lock, chrono::steady_clock::now() + __d);
-}
-
-template <class _Lock, class _Rep, class _Period, class _Predicate>
-inline bool
-condition_variable_any::wait_for(_Lock& __lock, const chrono::duration<_Rep, _Period>& __d, _Predicate __pred) {
- return wait_until(__lock, chrono::steady_clock::now() + __d, std::move(__pred));
-}
-
-# if _LIBCPP_STD_VER >= 20
-
-template <class _Lock, class _Predicate>
-bool condition_variable_any::wait(_Lock& __user_lock, stop_token __stoken, _Predicate __pred) {
- if (__stoken.stop_requested())
- return __pred();
-
- // Per https://eel.is/c++draft/thread.condition.condvarany#general-note-2,
- // we do need to take a copy of the shared pointer __mut_
- // This ensures that a thread can call the destructor immediately after calling
- // notify_all, without waiting all the wait calls.
- // A thread can also safely call the destructor immediately after calling
- // request_stop, as the call to request_stop would evaluate the callback,
- // which accesses the internal condition variable, immediately on the same thread.
- // In this situation, it is OK even without copying a shared ownership the internal
- // condition variable. However, this needs the evaluation of stop_callback to
- // happen-before the destruction.
- // The spec only says "Only the notification to unblock the wait needs to happen
- // before destruction". To make this work, we need to copy the shared ownership of
- // the internal condition variable inside this function, which is not possible
- // with the current ABI.
- shared_ptr<mutex> __mut = __mut_;
-
- stop_callback __cb(__stoken, [this] { notify_all(); });
-
- while (true) {
- if (__pred())
- return true;
-
- // We need to take the internal lock before checking stop_requested,
- // so that the notification cannot come in between the stop_requested
- // check and entering the wait.
- // Note that the stop_callback takes the same internal lock before notifying
- unique_lock<mutex> __internal_lock(*__mut);
- if (__stoken.stop_requested())
- break;
-
- __unlock_guard<_Lock> __unlock(__user_lock);
- unique_lock<mutex> __internal_lock2(
- std::move(__internal_lock)); // switch unlock order between __internal_lock and __user_lock
- __cv_.wait(__internal_lock2);
- } // __internal_lock2.unlock(), __user_lock.lock()
- return __pred();
-}
-
-template <class _Lock, class _Clock, class _Duration, class _Predicate>
-bool condition_variable_any::wait_until(
- _Lock& __user_lock,
- stop_token __stoken,
- const chrono::time_point<_Clock, _Duration>& __abs_time,
- _Predicate __pred) {
- if (__stoken.stop_requested())
- return __pred();
-
- shared_ptr<mutex> __mut = __mut_;
- stop_callback __cb(__stoken, [this] { notify_all(); });
-
- while (true) {
- if (__pred())
- return true;
-
- unique_lock<mutex> __internal_lock(*__mut);
- if (__stoken.stop_requested())
- break;
-
- __unlock_guard<_Lock> __unlock(__user_lock);
- unique_lock<mutex> __internal_lock2(
- std::move(__internal_lock)); // switch unlock order between __internal_lock and __user_lock
-
- if (__cv_.wait_until(__internal_lock2, __abs_time) == cv_status::timeout)
- break;
- } // __internal_lock2.unlock(), __user_lock.lock()
- return __pred();
-}
-
-template <class _Lock, class _Rep, class _Period, class _Predicate>
-bool condition_variable_any::wait_for(
- _Lock& __lock, stop_token __stoken, const chrono::duration<_Rep, _Period>& __rel_time, _Predicate __pred) {
- return wait_until(__lock, std::move(__stoken), chrono::steady_clock::now() + __rel_time, std::move(__pred));
-}
-
-# endif // _LIBCPP_STD_VER >= 20
-
-_LIBCPP_EXPORTED_FROM_ABI void notify_all_at_thread_exit(condition_variable&, unique_lock<mutex>);
-
-_LIBCPP_END_NAMESPACE_STD
-
-# endif // _LIBCPP_HAS_THREADS
-
-_LIBCPP_POP_MACROS
-
-# if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20
-# include <atomic>
-# include <concepts>
-# include <cstdint>
-# include <cstdlib>
-# include <cstring>
-# include <initializer_list>
-# include <iosfwd>
-# include <new>
-# include <optional>
-# include <stdexcept>
-# include <system_error>
-# include <type_traits>
-# include <typeinfo>
-# endif
-#endif // __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)
-
-#endif // _LIBCPP_CONDITION_VARIABLE