- This was to make implementing jthread easier and requested in https://reviews.llvm.org/D151559
Differential Revision: https://reviews.llvm.org/D151792
__system_error/error_code.h
__system_error/error_condition.h
__system_error/system_error.h
+ __thread/formatter.h
__thread/poll_with_backoff.h
+ __thread/this_thread.h
+ __thread/thread.h
__thread/timed_backoff_policy.h
__threading_support
__tree
#include <__stop_token/atomic_unique_lock.h>
#include <__stop_token/intrusive_list_view.h>
#include <atomic>
+#include <cstdint>
#include <thread>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
--- /dev/null
+// -*- 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___THREAD_FORMATTER_H
+#define _LIBCPP___THREAD_FORMATTER_H
+
+#include <__concepts/arithmetic.h>
+#include <__config>
+#include <__format/concepts.h>
+#include <__format/format_parse_context.h>
+#include <__format/formatter.h>
+#include <__format/formatter_integral.h>
+#include <__format/parser_std_format_spec.h>
+#include <__threading_support>
+#include <__type_traits/conditional.h>
+#include <__type_traits/is_pointer.h>
+#include <__type_traits/is_same.h>
+#include <cstdint>
+
+#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
+# pragma GCC system_header
+#endif
+
+#if _LIBCPP_STD_VER >= 23
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+template <__fmt_char_type _CharT>
+struct _LIBCPP_TEMPLATE_VIS formatter<__thread_id, _CharT> {
+ public:
+ template <class _ParseContext>
+ _LIBCPP_HIDE_FROM_ABI constexpr typename _ParseContext::iterator parse(_ParseContext& __ctx) {
+ return __parser_.__parse(__ctx, __format_spec::__fields_fill_align_width);
+ }
+
+ template <class _FormatContext>
+ _LIBCPP_HIDE_FROM_ABI typename _FormatContext::iterator format(__thread_id __id, _FormatContext& __ctx) const {
+ // In __threading_support __libcpp_thread_id is either a
+ // unsigned long long or a pthread_t.
+ //
+ // The type of pthread_t is left unspecified in POSIX so it can be any
+ // type. The most logical types are an integral or pointer.
+ // On Linux systems pthread_t is an unsigned long long.
+ // On Apple systems pthread_t is a pointer type.
+ //
+ // Note the output should match what the stream operator does. Since
+ // the ostream operator has been shipped years before this formatter
+ // was added to the Standard, this formatter does what the stream
+ // operator does. This may require platform specific changes.
+
+ using _Tp = decltype(__get_underlying_id(__id));
+ using _Cp = conditional_t<integral<_Tp>, _Tp, conditional_t<is_pointer_v<_Tp>, uintptr_t, void>>;
+ static_assert(!is_same_v<_Cp, void>, "unsupported thread::id type, please file a bug report");
+
+ __format_spec::__parsed_specifications<_CharT> __specs = __parser_.__get_parsed_std_specifications(__ctx);
+ if constexpr (is_pointer_v<_Tp>) {
+ __specs.__std_.__alternate_form_ = true;
+ __specs.__std_.__type_ = __format_spec::__type::__hexadecimal_lower_case;
+ }
+ return __formatter::__format_integer(reinterpret_cast<_Cp>(__get_underlying_id(__id)), __ctx, __specs);
+ }
+
+ __format_spec::__parser<_CharT> __parser_{.__alignment_ = __format_spec::__alignment::__right};
+};
+
+_LIBCPP_END_NAMESPACE_STD
+
+#endif // _LIBCPP_STD_VER >= 23
+
+#endif // _LIBCPP___THREAD_FORMATTER_H
--- /dev/null
+// -*- 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___THREAD_THIS_THREAD_H
+#define _LIBCPP___THREAD_THIS_THREAD_H
+
+#include <__chrono/steady_clock.h>
+#include <__chrono/time_point.h>
+#include <__condition_variable/condition_variable.h>
+#include <__config>
+#include <__mutex/mutex.h>
+#include <__mutex/unique_lock.h>
+#include <__threading_support>
+
+#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
+# pragma GCC system_header
+#endif
+
+_LIBCPP_PUSH_MACROS
+#include <__undef_macros>
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+namespace this_thread
+{
+
+_LIBCPP_EXPORTED_FROM_ABI void sleep_for(const chrono::nanoseconds& __ns);
+
+template <class _Rep, class _Period>
+_LIBCPP_HIDE_FROM_ABI void
+sleep_for(const chrono::duration<_Rep, _Period>& __d)
+{
+ if (__d > chrono::duration<_Rep, _Period>::zero())
+ {
+ // The standard guarantees a 64bit signed integer resolution for nanoseconds,
+ // so use INT64_MAX / 1e9 as cut-off point. Use a constant to avoid <climits>
+ // and issues with long double folding on PowerPC with GCC.
+ _LIBCPP_CONSTEXPR chrono::duration<long double> __max =
+ chrono::duration<long double>(9223372036.0L);
+ chrono::nanoseconds __ns;
+ if (__d < __max)
+ {
+ __ns = chrono::duration_cast<chrono::nanoseconds>(__d);
+ if (__ns < __d)
+ ++__ns;
+ }
+ else
+ __ns = chrono::nanoseconds::max();
+ this_thread::sleep_for(__ns);
+ }
+}
+
+template <class _Clock, class _Duration>
+_LIBCPP_HIDE_FROM_ABI void
+sleep_until(const chrono::time_point<_Clock, _Duration>& __t)
+{
+ mutex __mut;
+ condition_variable __cv;
+ unique_lock<mutex> __lk(__mut);
+ while (_Clock::now() < __t)
+ __cv.wait_until(__lk, __t);
+}
+
+template <class _Duration>
+inline _LIBCPP_INLINE_VISIBILITY
+void
+sleep_until(const chrono::time_point<chrono::steady_clock, _Duration>& __t)
+{
+ this_thread::sleep_for(__t - chrono::steady_clock::now());
+}
+
+inline _LIBCPP_INLINE_VISIBILITY
+void yield() _NOEXCEPT {__libcpp_thread_yield();}
+
+} // namespace this_thread
+
+_LIBCPP_END_NAMESPACE_STD
+
+_LIBCPP_POP_MACROS
+
+#endif // _LIBCPP___THREAD_THIS_THREAD_H
--- /dev/null
+// -*- 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___THREAD_THREAD_H
+#define _LIBCPP___THREAD_THREAD_H
+
+#include <__condition_variable/condition_variable.h>
+#include <__config>
+#include <__exception/terminate.h>
+#include <__functional/hash.h>
+#include <__functional/unary_function.h>
+#include <__memory/unique_ptr.h>
+#include <__mutex/mutex.h>
+#include <__system_error/system_error.h>
+#include <__threading_support>
+#include <__utility/forward.h>
+#include <tuple>
+
+#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
+# pragma GCC system_header
+#endif
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+template <class _Tp> class __thread_specific_ptr;
+class _LIBCPP_EXPORTED_FROM_ABI __thread_struct;
+class _LIBCPP_HIDDEN __thread_struct_imp;
+class __assoc_sub_state;
+
+_LIBCPP_EXPORTED_FROM_ABI __thread_specific_ptr<__thread_struct>& __thread_local_data();
+
+class _LIBCPP_EXPORTED_FROM_ABI __thread_struct
+{
+ __thread_struct_imp* __p_;
+
+ __thread_struct(const __thread_struct&);
+ __thread_struct& operator=(const __thread_struct&);
+public:
+ __thread_struct();
+ ~__thread_struct();
+
+ void notify_all_at_thread_exit(condition_variable*, mutex*);
+ void __make_ready_at_thread_exit(__assoc_sub_state*);
+};
+
+template <class _Tp>
+class __thread_specific_ptr
+{
+ __libcpp_tls_key __key_;
+
+ // Only __thread_local_data() may construct a __thread_specific_ptr
+ // and only with _Tp == __thread_struct.
+ static_assert((is_same<_Tp, __thread_struct>::value), "");
+ __thread_specific_ptr();
+ friend _LIBCPP_EXPORTED_FROM_ABI __thread_specific_ptr<__thread_struct>& __thread_local_data();
+
+ __thread_specific_ptr(const __thread_specific_ptr&);
+ __thread_specific_ptr& operator=(const __thread_specific_ptr&);
+
+ _LIBCPP_HIDDEN static void _LIBCPP_TLS_DESTRUCTOR_CC __at_thread_exit(void*);
+
+public:
+ typedef _Tp* pointer;
+
+ ~__thread_specific_ptr();
+
+ _LIBCPP_INLINE_VISIBILITY
+ pointer get() const {return static_cast<_Tp*>(__libcpp_tls_get(__key_));}
+ _LIBCPP_INLINE_VISIBILITY
+ pointer operator*() const {return *get();}
+ _LIBCPP_INLINE_VISIBILITY
+ pointer operator->() const {return get();}
+ void set_pointer(pointer __p);
+};
+
+template <class _Tp>
+void _LIBCPP_TLS_DESTRUCTOR_CC
+__thread_specific_ptr<_Tp>::__at_thread_exit(void* __p)
+{
+ delete static_cast<pointer>(__p);
+}
+
+template <class _Tp>
+__thread_specific_ptr<_Tp>::__thread_specific_ptr()
+{
+ int __ec =
+ __libcpp_tls_create(&__key_, &__thread_specific_ptr::__at_thread_exit);
+ if (__ec)
+ __throw_system_error(__ec, "__thread_specific_ptr construction failed");
+}
+
+template <class _Tp>
+__thread_specific_ptr<_Tp>::~__thread_specific_ptr()
+{
+ // __thread_specific_ptr is only created with a static storage duration
+ // so this destructor is only invoked during program termination. Invoking
+ // pthread_key_delete(__key_) may prevent other threads from deleting their
+ // thread local data. For this reason we leak the key.
+}
+
+template <class _Tp>
+void
+__thread_specific_ptr<_Tp>::set_pointer(pointer __p)
+{
+ _LIBCPP_ASSERT(get() == nullptr,
+ "Attempting to overwrite thread local data");
+ std::__libcpp_tls_set(__key_, __p);
+}
+
+template<>
+struct _LIBCPP_TEMPLATE_VIS hash<__thread_id>
+ : public __unary_function<__thread_id, size_t>
+{
+ _LIBCPP_INLINE_VISIBILITY
+ size_t operator()(__thread_id __v) const _NOEXCEPT
+ {
+ return hash<__libcpp_thread_id>()(__v.__id_);
+ }
+};
+
+template<class _CharT, class _Traits>
+_LIBCPP_INLINE_VISIBILITY
+basic_ostream<_CharT, _Traits>&
+operator<<(basic_ostream<_CharT, _Traits>& __os, __thread_id __id)
+{return __os << __id.__id_;}
+
+class _LIBCPP_EXPORTED_FROM_ABI thread
+{
+ __libcpp_thread_t __t_;
+
+ thread(const thread&);
+ thread& operator=(const thread&);
+public:
+ typedef __thread_id id;
+ typedef __libcpp_thread_t native_handle_type;
+
+ _LIBCPP_INLINE_VISIBILITY
+ thread() _NOEXCEPT : __t_(_LIBCPP_NULL_THREAD) {}
+#ifndef _LIBCPP_CXX03_LANG
+ template <class _Fp, class ..._Args,
+ class = __enable_if_t<!is_same<__remove_cvref_t<_Fp>, thread>::value> >
+ _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS
+ explicit thread(_Fp&& __f, _Args&&... __args);
+#else // _LIBCPP_CXX03_LANG
+ template <class _Fp>
+ _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS
+ explicit thread(_Fp __f);
+#endif
+ ~thread();
+
+ _LIBCPP_INLINE_VISIBILITY
+ thread(thread&& __t) _NOEXCEPT : __t_(__t.__t_) {
+ __t.__t_ = _LIBCPP_NULL_THREAD;
+ }
+
+ _LIBCPP_INLINE_VISIBILITY
+ thread& operator=(thread&& __t) _NOEXCEPT {
+ if (!__libcpp_thread_isnull(&__t_))
+ terminate();
+ __t_ = __t.__t_;
+ __t.__t_ = _LIBCPP_NULL_THREAD;
+ return *this;
+ }
+
+ _LIBCPP_INLINE_VISIBILITY
+ void swap(thread& __t) _NOEXCEPT {_VSTD::swap(__t_, __t.__t_);}
+
+ _LIBCPP_INLINE_VISIBILITY
+ bool joinable() const _NOEXCEPT {return !__libcpp_thread_isnull(&__t_);}
+ void join();
+ void detach();
+ _LIBCPP_INLINE_VISIBILITY
+ id get_id() const _NOEXCEPT {return __libcpp_thread_get_id(&__t_);}
+ _LIBCPP_INLINE_VISIBILITY
+ native_handle_type native_handle() _NOEXCEPT {return __t_;}
+
+ static unsigned hardware_concurrency() _NOEXCEPT;
+};
+
+#ifndef _LIBCPP_CXX03_LANG
+
+template <class _TSp, class _Fp, class ..._Args, size_t ..._Indices>
+inline _LIBCPP_INLINE_VISIBILITY
+void
+__thread_execute(tuple<_TSp, _Fp, _Args...>& __t, __tuple_indices<_Indices...>)
+{
+ _VSTD::__invoke(_VSTD::move(_VSTD::get<1>(__t)), _VSTD::move(_VSTD::get<_Indices>(__t))...);
+}
+
+template <class _Fp>
+_LIBCPP_INLINE_VISIBILITY
+void* __thread_proxy(void* __vp)
+{
+ // _Fp = tuple< unique_ptr<__thread_struct>, Functor, Args...>
+ unique_ptr<_Fp> __p(static_cast<_Fp*>(__vp));
+ __thread_local_data().set_pointer(_VSTD::get<0>(*__p.get()).release());
+ typedef typename __make_tuple_indices<tuple_size<_Fp>::value, 2>::type _Index;
+ _VSTD::__thread_execute(*__p.get(), _Index());
+ return nullptr;
+}
+
+template <class _Fp, class ..._Args,
+ class
+ >
+thread::thread(_Fp&& __f, _Args&&... __args)
+{
+ typedef unique_ptr<__thread_struct> _TSPtr;
+ _TSPtr __tsp(new __thread_struct);
+ typedef tuple<_TSPtr, __decay_t<_Fp>, __decay_t<_Args>...> _Gp;
+ unique_ptr<_Gp> __p(
+ new _Gp(_VSTD::move(__tsp),
+ _VSTD::forward<_Fp>(__f),
+ _VSTD::forward<_Args>(__args)...));
+ int __ec = _VSTD::__libcpp_thread_create(&__t_, &__thread_proxy<_Gp>, __p.get());
+ if (__ec == 0)
+ __p.release();
+ else
+ __throw_system_error(__ec, "thread constructor failed");
+}
+
+#else // _LIBCPP_CXX03_LANG
+
+template <class _Fp>
+struct __thread_invoke_pair {
+ // This type is used to pass memory for thread local storage and a functor
+ // to a newly created thread because std::pair doesn't work with
+ // std::unique_ptr in C++03.
+ _LIBCPP_HIDE_FROM_ABI __thread_invoke_pair(_Fp& __f) : __tsp_(new __thread_struct), __fn_(__f) {}
+ unique_ptr<__thread_struct> __tsp_;
+ _Fp __fn_;
+};
+
+template <class _Fp>
+_LIBCPP_HIDE_FROM_ABI void* __thread_proxy_cxx03(void* __vp)
+{
+ unique_ptr<_Fp> __p(static_cast<_Fp*>(__vp));
+ __thread_local_data().set_pointer(__p->__tsp_.release());
+ (__p->__fn_)();
+ return nullptr;
+}
+
+template <class _Fp>
+thread::thread(_Fp __f)
+{
+
+ typedef __thread_invoke_pair<_Fp> _InvokePair;
+ typedef unique_ptr<_InvokePair> _PairPtr;
+ _PairPtr __pp(new _InvokePair(__f));
+ int __ec = _VSTD::__libcpp_thread_create(&__t_, &__thread_proxy_cxx03<_InvokePair>, __pp.get());
+ if (__ec == 0)
+ __pp.release();
+ else
+ __throw_system_error(__ec, "thread constructor failed");
+}
+
+#endif // _LIBCPP_CXX03_LANG
+
+inline _LIBCPP_INLINE_VISIBILITY
+void swap(thread& __x, thread& __y) _NOEXCEPT {__x.swap(__y);}
+
+_LIBCPP_END_NAMESPACE_STD
+
+#endif // _LIBCPP___THREAD_THREAD_H
#include <__chrono/time_point.h>
#include <__config>
#include <__exception/exception_ptr.h>
+#include <__memory/addressof.h>
#include <__memory/allocator.h>
#include <__memory/allocator_arg_t.h>
#include <__memory/allocator_destructor.h>
export *
module __thread {
+ module formatter { private header "__thread/formatter.h" }
module poll_with_backoff { private header "__thread/poll_with_backoff.h" }
+ module this_thread { private header "__thread/this_thread.h" }
+ module thread { private header "__thread/thread.h" }
module timed_backoff_policy { private header "__thread/timed_backoff_policy.h" }
}
}
#include <__assert> // all public C++ headers provide the assertion handler
#include <__availability>
-#include <__chrono/steady_clock.h>
-#include <__chrono/time_point.h>
-#include <__concepts/arithmetic.h>
-#include <__condition_variable/condition_variable.h>
#include <__config>
-#include <__exception/terminate.h>
-#include <__format/concepts.h>
-#include <__format/format_parse_context.h>
-#include <__format/formatter.h>
-#include <__format/formatter_integral.h>
-#include <__format/parser_std_format_spec.h>
-#include <__functional/hash.h>
-#include <__functional/unary_function.h>
-#include <__memory/addressof.h>
-#include <__memory/unique_ptr.h>
-#include <__mutex/mutex.h>
-#include <__mutex/unique_lock.h>
-#include <__system_error/system_error.h>
-#include <__thread/poll_with_backoff.h>
-#include <__thread/timed_backoff_policy.h>
+#include <__thread/formatter.h>
+#include <__thread/this_thread.h>
+#include <__thread/thread.h>
#include <__threading_support>
-#include <__utility/forward.h>
-#include <cstddef>
-#include <cstdint>
-#include <iosfwd>
-#include <tuple>
#include <version>
// standard-mandated includes
# pragma GCC system_header
#endif
-_LIBCPP_PUSH_MACROS
-#include <__undef_macros>
-
#ifdef _LIBCPP_HAS_NO_THREADS
# error "<thread> is not supported since libc++ has been configured without support for threads."
#endif
-_LIBCPP_BEGIN_NAMESPACE_STD
-
-template <class _Tp> class __thread_specific_ptr;
-class _LIBCPP_EXPORTED_FROM_ABI __thread_struct;
-class _LIBCPP_HIDDEN __thread_struct_imp;
-class __assoc_sub_state;
-
-_LIBCPP_EXPORTED_FROM_ABI __thread_specific_ptr<__thread_struct>& __thread_local_data();
-
-class _LIBCPP_EXPORTED_FROM_ABI __thread_struct
-{
- __thread_struct_imp* __p_;
-
- __thread_struct(const __thread_struct&);
- __thread_struct& operator=(const __thread_struct&);
-public:
- __thread_struct();
- ~__thread_struct();
-
- void notify_all_at_thread_exit(condition_variable*, mutex*);
- void __make_ready_at_thread_exit(__assoc_sub_state*);
-};
-
-template <class _Tp>
-class __thread_specific_ptr
-{
- __libcpp_tls_key __key_;
-
- // Only __thread_local_data() may construct a __thread_specific_ptr
- // and only with _Tp == __thread_struct.
- static_assert((is_same<_Tp, __thread_struct>::value), "");
- __thread_specific_ptr();
- friend _LIBCPP_EXPORTED_FROM_ABI __thread_specific_ptr<__thread_struct>& __thread_local_data();
-
- __thread_specific_ptr(const __thread_specific_ptr&);
- __thread_specific_ptr& operator=(const __thread_specific_ptr&);
-
- _LIBCPP_HIDDEN static void _LIBCPP_TLS_DESTRUCTOR_CC __at_thread_exit(void*);
-
-public:
- typedef _Tp* pointer;
-
- ~__thread_specific_ptr();
-
- _LIBCPP_INLINE_VISIBILITY
- pointer get() const {return static_cast<_Tp*>(__libcpp_tls_get(__key_));}
- _LIBCPP_INLINE_VISIBILITY
- pointer operator*() const {return *get();}
- _LIBCPP_INLINE_VISIBILITY
- pointer operator->() const {return get();}
- void set_pointer(pointer __p);
-};
-
-template <class _Tp>
-void _LIBCPP_TLS_DESTRUCTOR_CC
-__thread_specific_ptr<_Tp>::__at_thread_exit(void* __p)
-{
- delete static_cast<pointer>(__p);
-}
-
-template <class _Tp>
-__thread_specific_ptr<_Tp>::__thread_specific_ptr()
-{
- int __ec =
- __libcpp_tls_create(&__key_, &__thread_specific_ptr::__at_thread_exit);
- if (__ec)
- __throw_system_error(__ec, "__thread_specific_ptr construction failed");
-}
-
-template <class _Tp>
-__thread_specific_ptr<_Tp>::~__thread_specific_ptr()
-{
- // __thread_specific_ptr is only created with a static storage duration
- // so this destructor is only invoked during program termination. Invoking
- // pthread_key_delete(__key_) may prevent other threads from deleting their
- // thread local data. For this reason we leak the key.
-}
-
-template <class _Tp>
-void
-__thread_specific_ptr<_Tp>::set_pointer(pointer __p)
-{
- _LIBCPP_ASSERT(get() == nullptr,
- "Attempting to overwrite thread local data");
- std::__libcpp_tls_set(__key_, __p);
-}
-
-template<>
-struct _LIBCPP_TEMPLATE_VIS hash<__thread_id>
- : public __unary_function<__thread_id, size_t>
-{
- _LIBCPP_INLINE_VISIBILITY
- size_t operator()(__thread_id __v) const _NOEXCEPT
- {
- return hash<__libcpp_thread_id>()(__v.__id_);
- }
-};
-
-template<class _CharT, class _Traits>
-_LIBCPP_INLINE_VISIBILITY
-basic_ostream<_CharT, _Traits>&
-operator<<(basic_ostream<_CharT, _Traits>& __os, __thread_id __id)
-{return __os << __id.__id_;}
-
-#if _LIBCPP_STD_VER >= 23
-template <__fmt_char_type _CharT>
-struct _LIBCPP_TEMPLATE_VIS formatter<__thread_id, _CharT> {
- public:
- template <class _ParseContext>
- _LIBCPP_HIDE_FROM_ABI constexpr typename _ParseContext::iterator parse(_ParseContext& __ctx) {
- return __parser_.__parse(__ctx, __format_spec::__fields_fill_align_width);
- }
-
- template <class _FormatContext>
- _LIBCPP_HIDE_FROM_ABI typename _FormatContext::iterator format(__thread_id __id, _FormatContext& __ctx) const {
- // In __threading_support __libcpp_thread_id is either a
- // unsigned long long or a pthread_t.
- //
- // The type of pthread_t is left unspecified in POSIX so it can be any
- // type. The most logical types are an integral or pointer.
- // On Linux systems pthread_t is an unsigned long long.
- // On Apple systems pthread_t is a pointer type.
- //
- // Note the output should match what the stream operator does. Since
- // the ostream operator has been shipped years before this formatter
- // was added to the Standard, this formatter does what the stream
- // operator does. This may require platform specific changes.
-
- using _Tp = decltype(__get_underlying_id(__id));
- using _Cp = conditional_t<integral<_Tp>, _Tp, conditional_t<is_pointer_v<_Tp>, uintptr_t, void>>;
- static_assert(!is_same_v<_Cp, void>, "unsupported thread::id type, please file a bug report");
-
- __format_spec::__parsed_specifications<_CharT> __specs = __parser_.__get_parsed_std_specifications(__ctx);
- if constexpr (is_pointer_v<_Tp>) {
- __specs.__std_.__alternate_form_ = true;
- __specs.__std_.__type_ = __format_spec::__type::__hexadecimal_lower_case;
- }
- return __formatter::__format_integer(reinterpret_cast<_Cp>(__get_underlying_id(__id)), __ctx, __specs);
- }
-
- __format_spec::__parser<_CharT> __parser_{.__alignment_ = __format_spec::__alignment::__right};
-};
-#endif // _LIBCPP_STD_VER >= 23
-
-class _LIBCPP_EXPORTED_FROM_ABI thread
-{
- __libcpp_thread_t __t_;
-
- thread(const thread&);
- thread& operator=(const thread&);
-public:
- typedef __thread_id id;
- typedef __libcpp_thread_t native_handle_type;
-
- _LIBCPP_INLINE_VISIBILITY
- thread() _NOEXCEPT : __t_(_LIBCPP_NULL_THREAD) {}
-#ifndef _LIBCPP_CXX03_LANG
- template <class _Fp, class ..._Args,
- class = __enable_if_t<!is_same<__remove_cvref_t<_Fp>, thread>::value> >
- _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS
- explicit thread(_Fp&& __f, _Args&&... __args);
-#else // _LIBCPP_CXX03_LANG
- template <class _Fp>
- _LIBCPP_METHOD_TEMPLATE_IMPLICIT_INSTANTIATION_VIS
- explicit thread(_Fp __f);
+#if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES)
+# include <cstddef>
+# include <ctime>
+# include <iosfwd>
+# include <ratio>
#endif
- ~thread();
-
- _LIBCPP_INLINE_VISIBILITY
- thread(thread&& __t) _NOEXCEPT : __t_(__t.__t_) {
- __t.__t_ = _LIBCPP_NULL_THREAD;
- }
-
- _LIBCPP_INLINE_VISIBILITY
- thread& operator=(thread&& __t) _NOEXCEPT {
- if (!__libcpp_thread_isnull(&__t_))
- terminate();
- __t_ = __t.__t_;
- __t.__t_ = _LIBCPP_NULL_THREAD;
- return *this;
- }
-
- _LIBCPP_INLINE_VISIBILITY
- void swap(thread& __t) _NOEXCEPT {_VSTD::swap(__t_, __t.__t_);}
-
- _LIBCPP_INLINE_VISIBILITY
- bool joinable() const _NOEXCEPT {return !__libcpp_thread_isnull(&__t_);}
- void join();
- void detach();
- _LIBCPP_INLINE_VISIBILITY
- id get_id() const _NOEXCEPT {return __libcpp_thread_get_id(&__t_);}
- _LIBCPP_INLINE_VISIBILITY
- native_handle_type native_handle() _NOEXCEPT {return __t_;}
-
- static unsigned hardware_concurrency() _NOEXCEPT;
-};
-
-#ifndef _LIBCPP_CXX03_LANG
-
-template <class _TSp, class _Fp, class ..._Args, size_t ..._Indices>
-inline _LIBCPP_INLINE_VISIBILITY
-void
-__thread_execute(tuple<_TSp, _Fp, _Args...>& __t, __tuple_indices<_Indices...>)
-{
- _VSTD::__invoke(_VSTD::move(_VSTD::get<1>(__t)), _VSTD::move(_VSTD::get<_Indices>(__t))...);
-}
-
-template <class _Fp>
-_LIBCPP_INLINE_VISIBILITY
-void* __thread_proxy(void* __vp)
-{
- // _Fp = tuple< unique_ptr<__thread_struct>, Functor, Args...>
- unique_ptr<_Fp> __p(static_cast<_Fp*>(__vp));
- __thread_local_data().set_pointer(_VSTD::get<0>(*__p.get()).release());
- typedef typename __make_tuple_indices<tuple_size<_Fp>::value, 2>::type _Index;
- _VSTD::__thread_execute(*__p.get(), _Index());
- return nullptr;
-}
-
-template <class _Fp, class ..._Args,
- class
- >
-thread::thread(_Fp&& __f, _Args&&... __args)
-{
- typedef unique_ptr<__thread_struct> _TSPtr;
- _TSPtr __tsp(new __thread_struct);
- typedef tuple<_TSPtr, __decay_t<_Fp>, __decay_t<_Args>...> _Gp;
- unique_ptr<_Gp> __p(
- new _Gp(_VSTD::move(__tsp),
- _VSTD::forward<_Fp>(__f),
- _VSTD::forward<_Args>(__args)...));
- int __ec = _VSTD::__libcpp_thread_create(&__t_, &__thread_proxy<_Gp>, __p.get());
- if (__ec == 0)
- __p.release();
- else
- __throw_system_error(__ec, "thread constructor failed");
-}
-
-#else // _LIBCPP_CXX03_LANG
-
-template <class _Fp>
-struct __thread_invoke_pair {
- // This type is used to pass memory for thread local storage and a functor
- // to a newly created thread because std::pair doesn't work with
- // std::unique_ptr in C++03.
- _LIBCPP_HIDE_FROM_ABI __thread_invoke_pair(_Fp& __f) : __tsp_(new __thread_struct), __fn_(__f) {}
- unique_ptr<__thread_struct> __tsp_;
- _Fp __fn_;
-};
-
-template <class _Fp>
-_LIBCPP_HIDE_FROM_ABI void* __thread_proxy_cxx03(void* __vp)
-{
- unique_ptr<_Fp> __p(static_cast<_Fp*>(__vp));
- __thread_local_data().set_pointer(__p->__tsp_.release());
- (__p->__fn_)();
- return nullptr;
-}
-
-template <class _Fp>
-thread::thread(_Fp __f)
-{
-
- typedef __thread_invoke_pair<_Fp> _InvokePair;
- typedef unique_ptr<_InvokePair> _PairPtr;
- _PairPtr __pp(new _InvokePair(__f));
- int __ec = _VSTD::__libcpp_thread_create(&__t_, &__thread_proxy_cxx03<_InvokePair>, __pp.get());
- if (__ec == 0)
- __pp.release();
- else
- __throw_system_error(__ec, "thread constructor failed");
-}
-
-#endif // _LIBCPP_CXX03_LANG
-
-inline _LIBCPP_INLINE_VISIBILITY
-void swap(thread& __x, thread& __y) _NOEXCEPT {__x.swap(__y);}
-
-namespace this_thread
-{
-
-_LIBCPP_EXPORTED_FROM_ABI void sleep_for(const chrono::nanoseconds& __ns);
-
-template <class _Rep, class _Period>
-_LIBCPP_HIDE_FROM_ABI void
-sleep_for(const chrono::duration<_Rep, _Period>& __d)
-{
- if (__d > chrono::duration<_Rep, _Period>::zero())
- {
- // The standard guarantees a 64bit signed integer resolution for nanoseconds,
- // so use INT64_MAX / 1e9 as cut-off point. Use a constant to avoid <climits>
- // and issues with long double folding on PowerPC with GCC.
- _LIBCPP_CONSTEXPR chrono::duration<long double> __max =
- chrono::duration<long double>(9223372036.0L);
- chrono::nanoseconds __ns;
- if (__d < __max)
- {
- __ns = chrono::duration_cast<chrono::nanoseconds>(__d);
- if (__ns < __d)
- ++__ns;
- }
- else
- __ns = chrono::nanoseconds::max();
- this_thread::sleep_for(__ns);
- }
-}
-
-template <class _Clock, class _Duration>
-_LIBCPP_HIDE_FROM_ABI void
-sleep_until(const chrono::time_point<_Clock, _Duration>& __t)
-{
- mutex __mut;
- condition_variable __cv;
- unique_lock<mutex> __lk(__mut);
- while (_Clock::now() < __t)
- __cv.wait_until(__lk, __t);
-}
-
-template <class _Duration>
-inline _LIBCPP_INLINE_VISIBILITY
-void
-sleep_until(const chrono::time_point<chrono::steady_clock, _Duration>& __t)
-{
- this_thread::sleep_for(__t - chrono::steady_clock::now());
-}
-
-inline _LIBCPP_INLINE_VISIBILITY
-void yield() _NOEXCEPT {__libcpp_thread_yield();}
-
-} // namespace this_thread
-
-_LIBCPP_END_NAMESPACE_STD
-
-_LIBCPP_POP_MACROS
#if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 17
# include <chrono>
# include <functional>
# include <new>
# include <system_error>
+# include <type_traits>
#endif
#endif // _LIBCPP_THREAD
#include <__config>
#ifndef _LIBCPP_HAS_NO_THREADS
+#include <__thread/timed_backoff_policy.h>
#include <atomic>
#include <climits>
#include <functional>
#ifndef _LIBCPP_HAS_NO_THREADS
+#include <__thread/poll_with_backoff.h>
+#include <__thread/timed_backoff_policy.h>
#include <exception>
#include <future>
#include <limits>
stdexcept iosfwd
stop_token atomic
stop_token cstddef
+stop_token cstdint
stop_token limits
stop_token thread
stop_token version
stdexcept iosfwd
stop_token atomic
stop_token cstddef
+stop_token cstdint
stop_token limits
stop_token thread
stop_token version
stdexcept iosfwd
stop_token atomic
stop_token cstddef
+stop_token cstdint
stop_token limits
stop_token thread
stop_token version
stdexcept iosfwd
stop_token atomic
stop_token cstddef
+stop_token cstdint
stop_token limits
stop_token thread
stop_token version
stdexcept iosfwd
stop_token atomic
stop_token cstddef
+stop_token cstdint
stop_token limits
stop_token thread
stop_token version
stdexcept iosfwd
stop_token atomic
stop_token cstddef
+stop_token cstdint
stop_token limits
stop_token thread
stop_token version
thread cstdint
thread cstdlib
thread ctime
+thread initializer_list
thread iosfwd
thread limits
thread locale
stdexcept iosfwd
stop_token atomic
stop_token cstddef
+stop_token cstdint
stop_token limits
stop_token thread
stop_token version
thread cstdint
thread cstdlib
thread ctime
+thread initializer_list
thread iosfwd
thread limits
thread locale
#include <atomic>
#include <cassert>
+#include <chrono>
#include <cstdlib>
#include <shared_mutex>
#include <vector>
#include <thread>
#include <atomic>
+#include <chrono>
#include <cassert>
#include <cstdlib>
#include <shared_mutex>
#include <thread>
#include <cstdlib>
#include <cassert>
+#include <chrono>
#include "make_test_thread.h"
#include "test_macros.h"
#include <vector>
#include <cstdlib>
#include <cassert>
+#include <chrono>
#include "make_test_thread.h"
#include "test_macros.h"
#include <atomic>
#include <cassert>
+#include <chrono>
#include <cstdlib>
#include <shared_mutex>
#include <vector>
#include <thread>
#include <cstdlib>
#include <cassert>
+#include <chrono>
#include "make_test_thread.h"
#include "test_macros.h"
// Test that <thread> provides all of the arithmetic, enum, and pointer
// hash specializations.
+#include <functional>
#include <thread>
#include "poisoned_hash_helper.h"
// Note this should be discussed in LEWG.
#include <concepts>
+#include <format>
#include <thread>
#include "test_macros.h"
libcxx/include/__support/xlocale/__nop_locale_mgmt.h
libcxx/include/__system_error/errc.h
libcxx/include/thread
+libcxx/include/__thread/formatter.h
libcxx/include/__threading_support
libcxx/include/__thread/poll_with_backoff.h
+libcxx/include/__thread/this_thread.h
+libcxx/include/__thread/thread.h
libcxx/include/__thread/timed_backoff_policy.h
libcxx/include/__tree
libcxx/include/tuple
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