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9783f28cbb
This patch runs clang-format on all of libcxx/include and libcxx/src, in accordance with the RFC discussed at [1]. Follow-up patches will format the benchmarks, the test suite and remaining parts of the code. I'm splitting this one into its own patch so the diff is a bit easier to review. This patch was generated with: find libcxx/include libcxx/src -type f \ | grep -v 'module.modulemap.in' \ | grep -v 'CMakeLists.txt' \ | grep -v 'README.txt' \ | grep -v 'libcxx.imp' \ | grep -v '__config_site.in' \ | xargs clang-format -i A Git merge driver is available in libcxx/utils/clang-format-merge-driver.sh to help resolve merge and rebase issues across these formatting changes. [1]: https://discourse.llvm.org/t/rfc-clang-formatting-all-of-libc-once-and-for-all
310 lines
10 KiB
C++
310 lines
10 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 _LIBCPP_CONDITION_VARIABLE
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#define _LIBCPP_CONDITION_VARIABLE
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/*
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condition_variable synopsis
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namespace std
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{
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enum class cv_status { no_timeout, timeout };
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class condition_variable
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{
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public:
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condition_variable();
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~condition_variable();
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condition_variable(const condition_variable&) = delete;
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condition_variable& operator=(const condition_variable&) = delete;
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void notify_one() noexcept;
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void notify_all() noexcept;
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void wait(unique_lock<mutex>& lock);
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template <class Predicate>
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void wait(unique_lock<mutex>& lock, Predicate pred);
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template <class Clock, class Duration>
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cv_status
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wait_until(unique_lock<mutex>& lock,
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const chrono::time_point<Clock, Duration>& abs_time);
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template <class Clock, class Duration, class Predicate>
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bool
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wait_until(unique_lock<mutex>& lock,
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const chrono::time_point<Clock, Duration>& abs_time,
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Predicate pred);
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template <class Rep, class Period>
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cv_status
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wait_for(unique_lock<mutex>& lock,
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const chrono::duration<Rep, Period>& rel_time);
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template <class Rep, class Period, class Predicate>
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bool
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wait_for(unique_lock<mutex>& lock,
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const chrono::duration<Rep, Period>& rel_time,
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Predicate pred);
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typedef pthread_cond_t* native_handle_type;
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native_handle_type native_handle();
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};
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void notify_all_at_thread_exit(condition_variable& cond, unique_lock<mutex> lk);
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class condition_variable_any
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{
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public:
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condition_variable_any();
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~condition_variable_any();
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condition_variable_any(const condition_variable_any&) = delete;
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condition_variable_any& operator=(const condition_variable_any&) = delete;
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void notify_one() noexcept;
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void notify_all() noexcept;
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template <class Lock>
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void wait(Lock& lock);
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template <class Lock, class Predicate>
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void wait(Lock& lock, Predicate pred);
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template <class Lock, class Clock, class Duration>
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cv_status
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wait_until(Lock& lock,
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const chrono::time_point<Clock, Duration>& abs_time);
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template <class Lock, class Clock, class Duration, class Predicate>
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bool
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wait_until(Lock& lock,
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const chrono::time_point<Clock, Duration>& abs_time,
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Predicate pred);
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template <class Lock, class Rep, class Period>
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cv_status
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wait_for(Lock& lock,
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const chrono::duration<Rep, Period>& rel_time);
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template <class Lock, class Rep, class Period, class Predicate>
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bool
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wait_for(Lock& lock,
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const chrono::duration<Rep, Period>& rel_time,
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Predicate pred);
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// [thread.condvarany.intwait], interruptible waits
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template <class Lock, class Predicate>
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bool wait(Lock& lock, stop_token stoken, Predicate pred); // since C++20
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template <class Lock, class Clock, class Duration, class Predicate>
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bool wait_until(Lock& lock, stop_token stoken,
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const chrono::time_point<Clock, Duration>& abs_time, Predicate pred); // since C++20
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template <class Lock, class Rep, class Period, class Predicate>
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bool wait_for(Lock& lock, stop_token stoken,
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const chrono::duration<Rep, Period>& rel_time, Predicate pred); // since C++20
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};
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} // std
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*/
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#include <__assert> // all public C++ headers provide the assertion handler
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#include <__availability>
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#include <__chrono/duration.h>
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#include <__chrono/steady_clock.h>
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#include <__chrono/time_point.h>
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#include <__condition_variable/condition_variable.h>
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#include <__config>
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#include <__memory/shared_ptr.h>
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#include <__memory/unique_ptr.h>
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#include <__mutex/lock_guard.h>
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#include <__mutex/mutex.h>
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#include <__mutex/tag_types.h>
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#include <__mutex/unique_lock.h>
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#include <__stop_token/stop_token.h>
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#include <__utility/move.h>
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#include <version>
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#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
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# pragma GCC system_header
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#endif
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#ifndef _LIBCPP_HAS_NO_THREADS
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_LIBCPP_BEGIN_NAMESPACE_STD
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class _LIBCPP_EXPORTED_FROM_ABI condition_variable_any {
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condition_variable __cv_;
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shared_ptr<mutex> __mut_;
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public:
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_LIBCPP_HIDE_FROM_ABI condition_variable_any();
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_LIBCPP_HIDE_FROM_ABI void notify_one() _NOEXCEPT;
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_LIBCPP_HIDE_FROM_ABI void notify_all() _NOEXCEPT;
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template <class _Lock>
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_LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS void wait(_Lock& __lock);
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template <class _Lock, class _Predicate>
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_LIBCPP_HIDE_FROM_ABI void wait(_Lock& __lock, _Predicate __pred);
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template <class _Lock, class _Clock, class _Duration>
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_LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS cv_status
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wait_until(_Lock& __lock, const chrono::time_point<_Clock, _Duration>& __t);
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template <class _Lock, class _Clock, class _Duration, class _Predicate>
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bool _LIBCPP_HIDE_FROM_ABI
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wait_until(_Lock& __lock, const chrono::time_point<_Clock, _Duration>& __t, _Predicate __pred);
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template <class _Lock, class _Rep, class _Period>
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cv_status _LIBCPP_HIDE_FROM_ABI wait_for(_Lock& __lock, const chrono::duration<_Rep, _Period>& __d);
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template <class _Lock, class _Rep, class _Period, class _Predicate>
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bool _LIBCPP_HIDE_FROM_ABI wait_for(_Lock& __lock, const chrono::duration<_Rep, _Period>& __d, _Predicate __pred);
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# if _LIBCPP_STD_VER >= 20 && !defined(_LIBCPP_HAS_NO_EXPERIMENTAL_STOP_TOKEN)
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template <class _Lock, class _Predicate>
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_LIBCPP_AVAILABILITY_SYNC _LIBCPP_HIDE_FROM_ABI bool wait(_Lock& __lock, stop_token __stoken, _Predicate __pred);
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template <class _Lock, class _Clock, class _Duration, class _Predicate>
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_LIBCPP_AVAILABILITY_SYNC _LIBCPP_HIDE_FROM_ABI bool wait_until(
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_Lock& __lock, stop_token __stoken, const chrono::time_point<_Clock, _Duration>& __abs_time, _Predicate __pred);
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template <class _Lock, class _Rep, class _Period, class _Predicate>
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_LIBCPP_AVAILABILITY_SYNC _LIBCPP_HIDE_FROM_ABI bool
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wait_for(_Lock& __lock, stop_token __stoken, const chrono::duration<_Rep, _Period>& __rel_time, _Predicate __pred);
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# endif // _LIBCPP_STD_VER >= 20 && !defined(_LIBCPP_HAS_NO_EXPERIMENTAL_STOP_TOKEN)
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};
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inline condition_variable_any::condition_variable_any() : __mut_(make_shared<mutex>()) {}
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inline void condition_variable_any::notify_one() _NOEXCEPT {
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{ lock_guard<mutex> __lx(*__mut_); }
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__cv_.notify_one();
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}
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inline void condition_variable_any::notify_all() _NOEXCEPT {
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{ lock_guard<mutex> __lx(*__mut_); }
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__cv_.notify_all();
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}
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struct __lock_external {
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template <class _Lock>
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_LIBCPP_HIDE_FROM_ABI void operator()(_Lock* __m) {
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__m->lock();
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}
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};
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template <class _Lock>
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void condition_variable_any::wait(_Lock& __lock) {
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shared_ptr<mutex> __mut = __mut_;
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unique_lock<mutex> __lk(*__mut);
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__lock.unlock();
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unique_ptr<_Lock, __lock_external> __lxx(&__lock);
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lock_guard<unique_lock<mutex> > __lx(__lk, adopt_lock_t());
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__cv_.wait(__lk);
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} // __mut_.unlock(), __lock.lock()
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template <class _Lock, class _Predicate>
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inline void condition_variable_any::wait(_Lock& __lock, _Predicate __pred) {
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while (!__pred())
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wait(__lock);
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}
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template <class _Lock, class _Clock, class _Duration>
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cv_status condition_variable_any::wait_until(_Lock& __lock, const chrono::time_point<_Clock, _Duration>& __t) {
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shared_ptr<mutex> __mut = __mut_;
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unique_lock<mutex> __lk(*__mut);
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__lock.unlock();
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unique_ptr<_Lock, __lock_external> __lxx(&__lock);
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lock_guard<unique_lock<mutex> > __lx(__lk, adopt_lock_t());
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return __cv_.wait_until(__lk, __t);
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} // __mut_.unlock(), __lock.lock()
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template <class _Lock, class _Clock, class _Duration, class _Predicate>
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inline bool
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condition_variable_any::wait_until(_Lock& __lock, const chrono::time_point<_Clock, _Duration>& __t, _Predicate __pred) {
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while (!__pred())
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if (wait_until(__lock, __t) == cv_status::timeout)
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return __pred();
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return true;
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}
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template <class _Lock, class _Rep, class _Period>
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inline cv_status condition_variable_any::wait_for(_Lock& __lock, const chrono::duration<_Rep, _Period>& __d) {
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return wait_until(__lock, chrono::steady_clock::now() + __d);
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}
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template <class _Lock, class _Rep, class _Period, class _Predicate>
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inline bool
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condition_variable_any::wait_for(_Lock& __lock, const chrono::duration<_Rep, _Period>& __d, _Predicate __pred) {
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return wait_until(__lock, chrono::steady_clock::now() + __d, std::move(__pred));
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}
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# if _LIBCPP_STD_VER >= 20 && !defined(_LIBCPP_HAS_NO_EXPERIMENTAL_STOP_TOKEN)
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template <class _Lock, class _Predicate>
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bool condition_variable_any::wait(_Lock& __lock, stop_token __stoken, _Predicate __pred) {
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while (!__stoken.stop_requested()) {
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if (__pred())
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return true;
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wait(__lock);
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}
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return __pred();
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}
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template <class _Lock, class _Clock, class _Duration, class _Predicate>
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bool condition_variable_any::wait_until(
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_Lock& __lock, stop_token __stoken, const chrono::time_point<_Clock, _Duration>& __abs_time, _Predicate __pred) {
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while (!__stoken.stop_requested()) {
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if (__pred())
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return true;
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if (wait_until(__lock, __abs_time) == cv_status::timeout)
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return __pred();
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}
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return __pred();
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}
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template <class _Lock, class _Rep, class _Period, class _Predicate>
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bool condition_variable_any::wait_for(
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_Lock& __lock, stop_token __stoken, const chrono::duration<_Rep, _Period>& __rel_time, _Predicate __pred) {
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return wait_until(__lock, std::move(__stoken), chrono::steady_clock::now() + __rel_time, std::move(__pred));
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}
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# endif // _LIBCPP_STD_VER >= 20 && !defined(_LIBCPP_HAS_NO_EXPERIMENTAL_STOP_TOKEN)
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_LIBCPP_EXPORTED_FROM_ABI void notify_all_at_thread_exit(condition_variable&, unique_lock<mutex>);
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_LIBCPP_END_NAMESPACE_STD
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#endif // !_LIBCPP_HAS_NO_THREADS
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#if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20
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# include <atomic>
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# include <concepts>
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# include <cstdint>
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# include <cstdlib>
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# include <cstring>
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# include <initializer_list>
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# include <iosfwd>
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# include <new>
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# include <stdexcept>
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# include <system_error>
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# include <type_traits>
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# include <typeinfo>
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#endif
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#endif // _LIBCPP_CONDITION_VARIABLE
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