diff options
Diffstat (limited to 'lib/libcxx/include/thread')
| -rw-r--r-- | lib/libcxx/include/thread | 484 |
1 files changed, 0 insertions, 484 deletions
diff --git a/lib/libcxx/include/thread b/lib/libcxx/include/thread deleted file mode 100644 index 8c0115f8708..00000000000 --- a/lib/libcxx/include/thread +++ /dev/null @@ -1,484 +0,0 @@ -// -*- C++ -*- -//===--------------------------- thread -----------------------------------===// -// -// The LLVM Compiler Infrastructure -// -// This file is dual licensed under the MIT and the University of Illinois Open -// Source Licenses. See LICENSE.TXT for details. -// -//===----------------------------------------------------------------------===// - -#ifndef _LIBCPP_THREAD -#define _LIBCPP_THREAD - -/* - - thread synopsis - -#define __STDCPP_THREADS__ __cplusplus - -namespace std -{ - -class thread -{ -public: - class id; - typedef pthread_t native_handle_type; - - thread() noexcept; - template <class F, class ...Args> explicit thread(F&& f, Args&&... args); - ~thread(); - - thread(const thread&) = delete; - thread(thread&& t) noexcept; - - thread& operator=(const thread&) = delete; - thread& operator=(thread&& t) noexcept; - - void swap(thread& t) noexcept; - - bool joinable() const noexcept; - void join(); - void detach(); - id get_id() const noexcept; - native_handle_type native_handle(); - - static unsigned hardware_concurrency() noexcept; -}; - -void swap(thread& x, thread& y) noexcept; - -class thread::id -{ -public: - id() noexcept; -}; - -bool operator==(thread::id x, thread::id y) noexcept; -bool operator!=(thread::id x, thread::id y) noexcept; -bool operator< (thread::id x, thread::id y) noexcept; -bool operator<=(thread::id x, thread::id y) noexcept; -bool operator> (thread::id x, thread::id y) noexcept; -bool operator>=(thread::id x, thread::id y) noexcept; - -template<class charT, class traits> -basic_ostream<charT, traits>& -operator<<(basic_ostream<charT, traits>& out, thread::id id); - -namespace this_thread -{ - -thread::id get_id() noexcept; - -void yield() noexcept; - -template <class Clock, class Duration> -void sleep_until(const chrono::time_point<Clock, Duration>& abs_time); - -template <class Rep, class Period> -void sleep_for(const chrono::duration<Rep, Period>& rel_time); - -} // this_thread - -} // std - -*/ - -#include <__config> -#include <iosfwd> -#include <__functional_base> -#include <type_traits> -#include <cstddef> -#include <functional> -#include <memory> -#include <system_error> -#include <chrono> -#include <__mutex_base> -#ifndef _LIBCPP_CXX03_LANG -#include <tuple> -#endif -#include <__threading_support> -#include <__debug> - -#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) -#pragma GCC system_header -#endif - -_LIBCPP_PUSH_MACROS -#include <__undef_macros> - -#define __STDCPP_THREADS__ __cplusplus - -#ifdef _LIBCPP_HAS_NO_THREADS -#error <thread> is not supported on this single threaded system -#else // !_LIBCPP_HAS_NO_THREADS - -_LIBCPP_BEGIN_NAMESPACE_STD - -template <class _Tp> class __thread_specific_ptr; -class _LIBCPP_TYPE_VIS __thread_struct; -class _LIBCPP_HIDDEN __thread_struct_imp; -class __assoc_sub_state; - -_LIBCPP_FUNC_VIS __thread_specific_ptr<__thread_struct>& __thread_local_data(); - -class _LIBCPP_TYPE_VIS __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_FUNC_VIS __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"); - __libcpp_tls_set(__key_, __p); -} - -class _LIBCPP_TYPE_VIS thread; -class _LIBCPP_TYPE_VIS __thread_id; - -namespace this_thread -{ - -_LIBCPP_INLINE_VISIBILITY __thread_id get_id() _NOEXCEPT; - -} // this_thread - -template<> struct hash<__thread_id>; - -class _LIBCPP_TEMPLATE_VIS __thread_id -{ - // FIXME: pthread_t is a pointer on Darwin but a long on Linux. - // NULL is the no-thread value on Darwin. Someone needs to check - // on other platforms. We assume 0 works everywhere for now. - __libcpp_thread_id __id_; - -public: - _LIBCPP_INLINE_VISIBILITY - __thread_id() _NOEXCEPT : __id_(0) {} - - friend _LIBCPP_INLINE_VISIBILITY - bool operator==(__thread_id __x, __thread_id __y) _NOEXCEPT - {return __libcpp_thread_id_equal(__x.__id_, __y.__id_);} - friend _LIBCPP_INLINE_VISIBILITY - bool operator!=(__thread_id __x, __thread_id __y) _NOEXCEPT - {return !(__x == __y);} - friend _LIBCPP_INLINE_VISIBILITY - bool operator< (__thread_id __x, __thread_id __y) _NOEXCEPT - {return __libcpp_thread_id_less(__x.__id_, __y.__id_);} - friend _LIBCPP_INLINE_VISIBILITY - bool operator<=(__thread_id __x, __thread_id __y) _NOEXCEPT - {return !(__y < __x);} - friend _LIBCPP_INLINE_VISIBILITY - bool operator> (__thread_id __x, __thread_id __y) _NOEXCEPT - {return __y < __x ;} - friend _LIBCPP_INLINE_VISIBILITY - bool operator>=(__thread_id __x, __thread_id __y) _NOEXCEPT - {return !(__x < __y);} - - template<class _CharT, class _Traits> - friend - _LIBCPP_INLINE_VISIBILITY - basic_ostream<_CharT, _Traits>& - operator<<(basic_ostream<_CharT, _Traits>& __os, __thread_id __id) - {return __os << __id.__id_;} - -private: - _LIBCPP_INLINE_VISIBILITY - __thread_id(__libcpp_thread_id __id) : __id_(__id) {} - - friend __thread_id this_thread::get_id() _NOEXCEPT; - friend class _LIBCPP_TYPE_VIS thread; - friend struct _LIBCPP_TEMPLATE_VIS hash<__thread_id>; -}; - -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_); - } -}; - -namespace this_thread -{ - -inline _LIBCPP_INLINE_VISIBILITY -__thread_id -get_id() _NOEXCEPT -{ - return __libcpp_thread_get_current_id(); -} - -} // this_thread - -class _LIBCPP_TYPE_VIS 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 = typename enable_if - < - !is_same<typename __uncvref<_Fp>::type, thread>::value - >::type - > - _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(); - -#ifndef _LIBCPP_CXX03_LANG - _LIBCPP_INLINE_VISIBILITY - thread(thread&& __t) _NOEXCEPT : __t_(__t.__t_) {__t.__t_ = _LIBCPP_NULL_THREAD;} - _LIBCPP_INLINE_VISIBILITY - thread& operator=(thread&& __t) _NOEXCEPT; -#endif // _LIBCPP_CXX03_LANG - - _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...>) -{ - __invoke(_VSTD::move(_VSTD::get<1>(__t)), _VSTD::move(_VSTD::get<_Indices>(__t))...); -} - -template <class _Fp> -void* __thread_proxy(void* __vp) -{ - // _Fp = std::tuple< unique_ptr<__thread_struct>, Functor, Args...> - std::unique_ptr<_Fp> __p(static_cast<_Fp*>(__vp)); - __thread_local_data().set_pointer(_VSTD::get<0>(*__p).release()); - typedef typename __make_tuple_indices<tuple_size<_Fp>::value, 2>::type _Index; - __thread_execute(*__p, _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, typename decay<_Fp>::type, typename decay<_Args>::type...> _Gp; - _VSTD::unique_ptr<_Gp> __p( - new _Gp(std::move(__tsp), - __decay_copy(_VSTD::forward<_Fp>(__f)), - __decay_copy(_VSTD::forward<_Args>(__args))...)); - int __ec = __libcpp_thread_create(&__t_, &__thread_proxy<_Gp>, __p.get()); - if (__ec == 0) - __p.release(); - else - __throw_system_error(__ec, "thread constructor failed"); -} - -inline -thread& -thread::operator=(thread&& __t) _NOEXCEPT -{ - if (!__libcpp_thread_isnull(&__t_)) - terminate(); - __t_ = __t.__t_; - __t.__t_ = _LIBCPP_NULL_THREAD; - return *this; -} - -#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. - __thread_invoke_pair(_Fp& __f) : __tsp_(new __thread_struct), __fn_(__f) {} - unique_ptr<__thread_struct> __tsp_; - _Fp __fn_; -}; - -template <class _Fp> -void* __thread_proxy_cxx03(void* __vp) -{ - std::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 std::unique_ptr<_InvokePair> _PairPtr; - _PairPtr __pp(new _InvokePair(__f)); - int __ec = __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_FUNC_VIS void sleep_for(const chrono::nanoseconds& __ns); - -template <class _Rep, class _Period> -void -sleep_for(const chrono::duration<_Rep, _Period>& __d) -{ - using namespace chrono; - if (__d > duration<_Rep, _Period>::zero()) - { - _LIBCPP_CONSTEXPR duration<long double> _Max = nanoseconds::max(); - nanoseconds __ns; - if (__d < _Max) - { - __ns = duration_cast<nanoseconds>(__d); - if (__ns < __d) - ++__ns; - } - else - __ns = nanoseconds::max(); - sleep_for(__ns); - } -} - -template <class _Clock, class _Duration> -void -sleep_until(const chrono::time_point<_Clock, _Duration>& __t) -{ - using namespace chrono; - 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) -{ - using namespace chrono; - sleep_for(__t - steady_clock::now()); -} - -inline _LIBCPP_INLINE_VISIBILITY -void yield() _NOEXCEPT {__libcpp_thread_yield();} - -} // this_thread - -_LIBCPP_END_NAMESPACE_STD - -#endif // !_LIBCPP_HAS_NO_THREADS - -_LIBCPP_POP_MACROS - -#endif // _LIBCPP_THREAD |