diff options
Diffstat (limited to 'third_party/libcxx/include/c++/v1/mutex')
| -rw-r--r-- | third_party/libcxx/include/c++/v1/mutex | 524 |
1 files changed, 0 insertions, 524 deletions
diff --git a/third_party/libcxx/include/c++/v1/mutex b/third_party/libcxx/include/c++/v1/mutex deleted file mode 100644 index bec0185..0000000 --- a/third_party/libcxx/include/c++/v1/mutex +++ /dev/null @@ -1,524 +0,0 @@ -// -*- 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_MUTEX -#define _LIBCPP_MUTEX - -/* - mutex synopsis - -namespace std -{ - -class mutex -{ -public: - constexpr mutex() noexcept; - ~mutex(); - - mutex(const mutex&) = delete; - mutex& operator=(const mutex&) = delete; - - void lock(); - bool try_lock(); - void unlock(); - - typedef pthread_mutex_t* native_handle_type; - native_handle_type native_handle(); -}; - -class recursive_mutex -{ -public: - recursive_mutex(); - ~recursive_mutex(); - - recursive_mutex(const recursive_mutex&) = delete; - recursive_mutex& operator=(const recursive_mutex&) = delete; - - void lock(); - bool try_lock() noexcept; - void unlock(); - - typedef pthread_mutex_t* native_handle_type; - native_handle_type native_handle(); -}; - -class timed_mutex -{ -public: - timed_mutex(); - ~timed_mutex(); - - timed_mutex(const timed_mutex&) = delete; - timed_mutex& operator=(const timed_mutex&) = delete; - - void lock(); - bool try_lock(); - template <class Rep, class Period> - bool try_lock_for(const chrono::duration<Rep, Period>& rel_time); - template <class Clock, class Duration> - bool try_lock_until(const chrono::time_point<Clock, Duration>& abs_time); - void unlock(); -}; - -class recursive_timed_mutex -{ -public: - recursive_timed_mutex(); - ~recursive_timed_mutex(); - - recursive_timed_mutex(const recursive_timed_mutex&) = delete; - recursive_timed_mutex& operator=(const recursive_timed_mutex&) = delete; - - void lock(); - bool try_lock() noexcept; - template <class Rep, class Period> - bool try_lock_for(const chrono::duration<Rep, Period>& rel_time); - template <class Clock, class Duration> - bool try_lock_until(const chrono::time_point<Clock, Duration>& abs_time); - void unlock(); -}; - -struct defer_lock_t { explicit defer_lock_t() = default; }; -struct try_to_lock_t { explicit try_to_lock_t() = default; }; -struct adopt_lock_t { explicit adopt_lock_t() = default; }; - -inline constexpr defer_lock_t defer_lock{}; -inline constexpr try_to_lock_t try_to_lock{}; -inline constexpr adopt_lock_t adopt_lock{}; - -template <class Mutex> -class lock_guard -{ -public: - typedef Mutex mutex_type; - - explicit lock_guard(mutex_type& m); - lock_guard(mutex_type& m, adopt_lock_t); - ~lock_guard(); - - lock_guard(lock_guard const&) = delete; - lock_guard& operator=(lock_guard const&) = delete; -}; - -template <class... MutexTypes> -class scoped_lock // C++17 -{ -public: - using mutex_type = Mutex; // Only if sizeof...(MutexTypes) == 1 - - explicit scoped_lock(MutexTypes&... m); - scoped_lock(adopt_lock_t, MutexTypes&... m); - ~scoped_lock(); - scoped_lock(scoped_lock const&) = delete; - scoped_lock& operator=(scoped_lock const&) = delete; -private: - tuple<MutexTypes&...> pm; // exposition only -}; - -template <class Mutex> -class unique_lock -{ -public: - typedef Mutex mutex_type; - unique_lock() noexcept; - explicit unique_lock(mutex_type& m); - unique_lock(mutex_type& m, defer_lock_t) noexcept; - unique_lock(mutex_type& m, try_to_lock_t); - unique_lock(mutex_type& m, adopt_lock_t); - template <class Clock, class Duration> - unique_lock(mutex_type& m, const chrono::time_point<Clock, Duration>& abs_time); - template <class Rep, class Period> - unique_lock(mutex_type& m, const chrono::duration<Rep, Period>& rel_time); - ~unique_lock(); - - unique_lock(unique_lock const&) = delete; - unique_lock& operator=(unique_lock const&) = delete; - - unique_lock(unique_lock&& u) noexcept; - unique_lock& operator=(unique_lock&& u) noexcept; - - void lock(); - bool try_lock(); - - template <class Rep, class Period> - bool try_lock_for(const chrono::duration<Rep, Period>& rel_time); - template <class Clock, class Duration> - bool try_lock_until(const chrono::time_point<Clock, Duration>& abs_time); - - void unlock(); - - void swap(unique_lock& u) noexcept; - mutex_type* release() noexcept; - - bool owns_lock() const noexcept; - explicit operator bool () const noexcept; - mutex_type* mutex() const noexcept; -}; - -template <class Mutex> - void swap(unique_lock<Mutex>& x, unique_lock<Mutex>& y) noexcept; - -template <class L1, class L2, class... L3> - int try_lock(L1&, L2&, L3&...); -template <class L1, class L2, class... L3> - void lock(L1&, L2&, L3&...); - -struct once_flag -{ - constexpr once_flag() noexcept; - - once_flag(const once_flag&) = delete; - once_flag& operator=(const once_flag&) = delete; -}; - -template<class Callable, class ...Args> - void call_once(once_flag& flag, Callable&& func, Args&&... args); - -} // std - -*/ - -#if __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS) -# include <__cxx03/mutex> -#else -# include <__chrono/steady_clock.h> -# include <__chrono/time_point.h> -# include <__condition_variable/condition_variable.h> -# include <__config> -# include <__mutex/lock_guard.h> -# include <__mutex/mutex.h> -# include <__mutex/once_flag.h> -# include <__mutex/tag_types.h> -# include <__mutex/unique_lock.h> -# include <__thread/id.h> -# include <__thread/support.h> -# include <__utility/forward.h> -# include <limits> -# ifndef _LIBCPP_CXX03_LANG -# include <tuple> -# endif -# include <version> - -# if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) -# pragma GCC system_header -# endif - -_LIBCPP_PUSH_MACROS -# include <__undef_macros> - -_LIBCPP_BEGIN_NAMESPACE_STD - -# if _LIBCPP_HAS_THREADS - -class _LIBCPP_EXPORTED_FROM_ABI recursive_mutex { - __libcpp_recursive_mutex_t __m_; - -public: - recursive_mutex(); - ~recursive_mutex(); - - recursive_mutex(const recursive_mutex&) = delete; - recursive_mutex& operator=(const recursive_mutex&) = delete; - - void lock(); - [[__nodiscard__]] bool try_lock() _NOEXCEPT; - void unlock() _NOEXCEPT; - - typedef __libcpp_recursive_mutex_t* native_handle_type; - - [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI native_handle_type native_handle() { return &__m_; } -}; - -class _LIBCPP_EXPORTED_FROM_ABI timed_mutex { - mutex __m_; - condition_variable __cv_; - bool __locked_; - -public: - timed_mutex(); - ~timed_mutex(); - - timed_mutex(const timed_mutex&) = delete; - timed_mutex& operator=(const timed_mutex&) = delete; - -public: - void lock(); - [[__nodiscard__]] bool try_lock() _NOEXCEPT; - template <class _Rep, class _Period> - [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI bool try_lock_for(const chrono::duration<_Rep, _Period>& __d) { - return try_lock_until(chrono::steady_clock::now() + __d); - } - - template <class _Clock, class _Duration> - [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI bool try_lock_until(const chrono::time_point<_Clock, _Duration>& __t) { - using namespace chrono; - unique_lock<mutex> __lk(__m_); - bool __no_timeout = _Clock::now() < __t; - while (__no_timeout && __locked_) - __no_timeout = __cv_.wait_until(__lk, __t) == cv_status::no_timeout; - if (!__locked_) { - __locked_ = true; - return true; - } - return false; - } - - void unlock() _NOEXCEPT; -}; - -class _LIBCPP_EXPORTED_FROM_ABI recursive_timed_mutex { - mutex __m_; - condition_variable __cv_; - size_t __count_; - __thread_id __id_; - -public: - recursive_timed_mutex(); - ~recursive_timed_mutex(); - - recursive_timed_mutex(const recursive_timed_mutex&) = delete; - recursive_timed_mutex& operator=(const recursive_timed_mutex&) = delete; - - void lock(); - [[__nodiscard__]] bool try_lock() _NOEXCEPT; - template <class _Rep, class _Period> - [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI bool try_lock_for(const chrono::duration<_Rep, _Period>& __d) { - return try_lock_until(chrono::steady_clock::now() + __d); - } - - template <class _Clock, class _Duration> - [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI bool try_lock_until(const chrono::time_point<_Clock, _Duration>& __t) { - using namespace chrono; - __thread_id __id = this_thread::get_id(); - unique_lock<mutex> __lk(__m_); - if (__id == __id_) { - if (__count_ == numeric_limits<size_t>::max()) - return false; - ++__count_; - return true; - } - bool __no_timeout = _Clock::now() < __t; - while (__no_timeout && __count_ != 0) - __no_timeout = __cv_.wait_until(__lk, __t) == cv_status::no_timeout; - if (__count_ == 0) { - __count_ = 1; - __id_ = __id; - return true; - } - return false; - } - - void unlock() _NOEXCEPT; -}; - -template <class _L0, class _L1> -[[__nodiscard__]] _LIBCPP_NO_THREAD_SAFETY_ANALYSIS _LIBCPP_HIDE_FROM_ABI int try_lock(_L0& __l0, _L1& __l1) { - unique_lock<_L0> __u0(__l0, try_to_lock_t()); - if (__u0.owns_lock()) { - if (__l1.try_lock()) { - __u0.release(); - return -1; - } else - return 1; - } - return 0; -} - -# ifndef _LIBCPP_CXX03_LANG - -template <class _L0, class _L1, class _L2, class... _L3> -[[__nodiscard__]] _LIBCPP_NO_THREAD_SAFETY_ANALYSIS - _LIBCPP_HIDE_FROM_ABI int try_lock(_L0& __l0, _L1& __l1, _L2& __l2, _L3&... __l3) { - int __r = 0; - unique_lock<_L0> __u0(__l0, try_to_lock); - if (__u0.owns_lock()) { - __r = std::try_lock(__l1, __l2, __l3...); - if (__r == -1) - __u0.release(); - else - ++__r; - } - return __r; -} - -# endif // _LIBCPP_CXX03_LANG - -// We're using unique_lock to implement the functions, which thread annotations don't support. So we have to disable -// the analysis inside the function. -template <class _L0, class _L1> -_LIBCPP_NO_THREAD_SAFETY_ANALYSIS _LIBCPP_HIDE_FROM_ABI void lock(_L0& __l0, _L1& __l1) - _LIBCPP_ACQUIRE_CAPABILITY(__l0, __l1) { - while (true) { - { - unique_lock<_L0> __u0(__l0); - if (__l1.try_lock()) { - __u0.release(); - break; - } - } - __libcpp_thread_yield(); - { - unique_lock<_L1> __u1(__l1); - if (__l0.try_lock()) { - __u1.release(); - break; - } - } - __libcpp_thread_yield(); - } -} - -# ifndef _LIBCPP_CXX03_LANG - -template <class _L0, class _L1, class _L2, class... _L3> -_LIBCPP_NO_THREAD_SAFETY_ANALYSIS void __lock_first(int __i, _L0& __l0, _L1& __l1, _L2& __l2, _L3&... __l3) { - while (true) { - switch (__i) { - case 0: { - unique_lock<_L0> __u0(__l0); - __i = std::try_lock(__l1, __l2, __l3...); - if (__i == -1) { - __u0.release(); - return; - } - } - ++__i; - __libcpp_thread_yield(); - break; - case 1: { - unique_lock<_L1> __u1(__l1); - __i = std::try_lock(__l2, __l3..., __l0); - if (__i == -1) { - __u1.release(); - return; - } - } - if (__i == sizeof...(_L3) + 1) - __i = 0; - else - __i += 2; - __libcpp_thread_yield(); - break; - default: - std::__lock_first(__i - 2, __l2, __l3..., __l0, __l1); - return; - } - } -} - -// We're using unique_lock to implement the functions, which thread annotations don't support. So we have to disable -// the analysis inside the function. -template <class _L0, class _L1, class _L2, class... _L3> -_LIBCPP_NO_THREAD_SAFETY_ANALYSIS inline _LIBCPP_HIDE_FROM_ABI void lock(_L0& __l0, _L1& __l1, _L2& __l2, _L3&... __l3) -# if defined(_LIBCPP_CLANG_VER) && _LIBCPP_CLANG_VER >= 2101 - _LIBCPP_ACQUIRE_CAPABILITY(__l0, __l1, __l2, __l3...) -# endif -{ - std::__lock_first(0, __l0, __l1, __l2, __l3...); -} - -# endif // _LIBCPP_CXX03_LANG - -# if _LIBCPP_STD_VER >= 17 -template <class... _Mutexes> -class scoped_lock; - -template <> -class scoped_lock<> { -public: - [[nodiscard]] _LIBCPP_HIDE_FROM_ABI explicit scoped_lock() {} - ~scoped_lock() = default; - - [[nodiscard]] _LIBCPP_HIDE_FROM_ABI explicit scoped_lock(adopt_lock_t) {} - - scoped_lock(scoped_lock const&) = delete; - scoped_lock& operator=(scoped_lock const&) = delete; -}; - -template <class _Mutex> -class _LIBCPP_SCOPED_LOCKABLE scoped_lock<_Mutex> { -public: - typedef _Mutex mutex_type; - -private: - mutex_type& __m_; - -public: - [[nodiscard]] _LIBCPP_HIDE_FROM_ABI explicit scoped_lock(mutex_type& __m) _LIBCPP_ACQUIRE_CAPABILITY(__m) - : __m_(__m) { - __m_.lock(); - } - - _LIBCPP_RELEASE_CAPABILITY _LIBCPP_HIDE_FROM_ABI ~scoped_lock() { __m_.unlock(); } - - [[nodiscard]] - _LIBCPP_HIDE_FROM_ABI explicit scoped_lock(adopt_lock_t, mutex_type& __m) _LIBCPP_REQUIRES_CAPABILITY(__m) - : __m_(__m) {} - - scoped_lock(scoped_lock const&) = delete; - scoped_lock& operator=(scoped_lock const&) = delete; -}; - -template <class... _MArgs> -class scoped_lock { - static_assert(sizeof...(_MArgs) > 1, "At least 2 lock types required"); - typedef tuple<_MArgs&...> _MutexTuple; - -public: - [[nodiscard]] _LIBCPP_HIDE_FROM_ABI explicit scoped_lock(_MArgs&... __margs) : __t_(__margs...) { - std::lock(__margs...); - } - - [[nodiscard]] _LIBCPP_HIDE_FROM_ABI scoped_lock(adopt_lock_t, _MArgs&... __margs) : __t_(__margs...) {} - - _LIBCPP_HIDE_FROM_ABI ~scoped_lock() { __unlock_unpack(make_index_sequence<sizeof...(_MArgs)>(), __t_); } - - scoped_lock(scoped_lock const&) = delete; - scoped_lock& operator=(scoped_lock const&) = delete; - -private: - template <size_t... _Indx> - _LIBCPP_HIDE_FROM_ABI static void __unlock_unpack(index_sequence<_Indx...>, _MutexTuple& __mt) { - (std::get<_Indx>(__mt).unlock(), ...); - } - - _MutexTuple __t_; -}; -_LIBCPP_CTAD_SUPPORTED_FOR_TYPE(scoped_lock); - -# endif // _LIBCPP_STD_VER >= 17 -# endif // _LIBCPP_HAS_THREADS - -_LIBCPP_END_NAMESPACE_STD - -_LIBCPP_POP_MACROS - -# if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 23 -# include <typeinfo> -# endif - -# if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20 -# include <atomic> -# include <concepts> -# include <cstdlib> -# include <cstring> -# include <ctime> -# include <initializer_list> -# include <iosfwd> -# include <new> -# include <optional> -# include <stdexcept> -# include <system_error> -# include <type_traits> -# endif -#endif // __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS) - -#endif // _LIBCPP_MUTEX |
