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Diffstat (limited to 'gcc-4.4.3/libstdc++-v3/include/std/thread')
| -rw-r--r-- | gcc-4.4.3/libstdc++-v3/include/std/thread | 284 |
1 files changed, 284 insertions, 0 deletions
diff --git a/gcc-4.4.3/libstdc++-v3/include/std/thread b/gcc-4.4.3/libstdc++-v3/include/std/thread new file mode 100644 index 000000000..6f735a018 --- /dev/null +++ b/gcc-4.4.3/libstdc++-v3/include/std/thread @@ -0,0 +1,284 @@ +// <thread> -*- C++ -*- + +// Copyright (C) 2008, 2009 Free Software Foundation, Inc. +// +// This file is part of the GNU ISO C++ Library. This library is free +// software; you can redistribute it and/or modify it under the +// terms of the GNU General Public License as published by the +// Free Software Foundation; either version 3, or (at your option) +// any later version. + +// This library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. + +// Under Section 7 of GPL version 3, you are granted additional +// permissions described in the GCC Runtime Library Exception, version +// 3.1, as published by the Free Software Foundation. + +// You should have received a copy of the GNU General Public License and +// a copy of the GCC Runtime Library Exception along with this program; +// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see +// <http://www.gnu.org/licenses/>. + +/** @file thread + * This is a Standard C++ Library header. + */ + +#ifndef _GLIBCXX_THREAD +#define _GLIBCXX_THREAD 1 + +#pragma GCC system_header + +#ifndef __GXX_EXPERIMENTAL_CXX0X__ +# include <c++0x_warning.h> +#else + +#include <chrono> +#include <functional> +#include <memory> +#include <mutex> +#include <condition_variable> +#include <cstddef> +#include <bits/functexcept.h> +#include <bits/gthr.h> + +#if defined(_GLIBCXX_HAS_GTHREADS) && defined(_GLIBCXX_USE_C99_STDINT_TR1) + +namespace std +{ + /** + * @defgroup threads Threads + * @ingroup concurrency + * + * Classes for thread support. + * @{ + */ + + /// thread + class thread + { + public: + typedef __gthread_t native_handle_type; + struct _Impl_base; + typedef shared_ptr<_Impl_base> __shared_base_type; + + /// thread::id + class id + { + native_handle_type _M_thread; + + public: + id() : _M_thread() { } + + explicit + id(native_handle_type __id) : _M_thread(__id) { } + + private: + friend class thread; + + friend bool + operator==(thread::id __x, thread::id __y) + { return __gthread_equal(__x._M_thread, __y._M_thread); } + + friend bool + operator<(thread::id __x, thread::id __y) + { return __x._M_thread < __y._M_thread; } + + template<class _CharT, class _Traits> + friend basic_ostream<_CharT, _Traits>& + operator<<(basic_ostream<_CharT, _Traits>&& __out, thread::id __id); + }; + + // Simple base type that the templatized, derived class containing + // an arbitrary functor can be converted to and called. + struct _Impl_base + { + __shared_base_type _M_this_ptr; + + virtual ~_Impl_base() = default; + + virtual void _M_run() = 0; + }; + + template<typename _Callable> + struct _Impl : public _Impl_base + { + _Callable _M_func; + + _Impl(_Callable&& __f) : _M_func(std::forward<_Callable>(__f)) + { } + + void + _M_run() { _M_func(); } + }; + + private: + id _M_id; + + public: + thread() = default; + thread(const thread&) = delete; + + thread(thread&& __t) + { swap(__t); } + + template<typename _Callable> + explicit thread(_Callable __f) + { _M_start_thread(_M_make_routine<_Callable>(__f)); } + + template<typename _Callable, typename... _Args> + thread(_Callable&& __f, _Args&&... __args) + { _M_start_thread(_M_make_routine(std::bind(__f, __args...))); } + + ~thread() + { + if (joinable()) + std::terminate(); + } + + thread& operator=(const thread&) = delete; + + thread& operator=(thread&& __t) + { + if (joinable()) + std::terminate(); + swap(__t); + return *this; + } + + void + swap(thread&& __t) + { std::swap(_M_id, __t._M_id); } + + bool + joinable() const + { return !(_M_id == id()); } + + void + join(); + + void + detach(); + + thread::id + get_id() const + { return _M_id; } + + /** @pre thread is joinable + */ + native_handle_type + native_handle() + { return _M_id._M_thread; } + + // Returns a value that hints at the number of hardware thread contexts. + static unsigned int + hardware_concurrency() + { return 0; } + + private: + void + _M_start_thread(__shared_base_type); + + template<typename _Callable> + shared_ptr<_Impl<_Callable>> + _M_make_routine(_Callable&& __f) + { + // Create and allocate full data structure, not base. + return make_shared<_Impl<_Callable>>(std::forward<_Callable>(__f)); + } + }; + + inline void + swap(thread& __x, thread& __y) + { __x.swap(__y); } + + inline void + swap(thread&& __x, thread& __y) + { __x.swap(__y); } + + inline void + swap(thread& __x, thread&& __y) + { __x.swap(__y); } + + inline bool + operator!=(thread::id __x, thread::id __y) + { return !(__x == __y); } + + inline bool + operator<=(thread::id __x, thread::id __y) + { return !(__y < __x); } + + inline bool + operator>(thread::id __x, thread::id __y) + { return __y < __x; } + + inline bool + operator>=(thread::id __x, thread::id __y) + { return !(__x < __y); } + + template<class _CharT, class _Traits> + inline basic_ostream<_CharT, _Traits>& + operator<<(basic_ostream<_CharT, _Traits>&& __out, thread::id __id) + { + if (__id == thread::id()) + return __out << "thread::id of a non-executing thread"; + else + return __out << __id._M_thread; + } + + /** @namespace std::this_thread + * @brief ISO C++ 0x entities sub namespace for thread. + * 30.2.2 Namespace this_thread. + */ + namespace this_thread + { + /// get_id + inline thread::id + get_id() { return thread::id(__gthread_self()); } + +#ifdef _GLIBCXX_USE_SCHED_YIELD + /// yield + inline void + yield() + { __gthread_yield(); } +#endif + +#ifdef _GLIBCXX_USE_NANOSLEEP + /// sleep_until + template<typename _Clock, typename _Duration> + inline void + sleep_until(const chrono::time_point<_Clock, _Duration>& __atime) + { sleep_for(__atime - _Clock::now()); } + + /// sleep_for + template<typename _Rep, typename _Period> + inline void + sleep_for(const chrono::duration<_Rep, _Period>& __rtime) + { + chrono::seconds __s = + chrono::duration_cast<chrono::seconds>(__rtime); + + chrono::nanoseconds __ns = + chrono::duration_cast<chrono::nanoseconds>(__rtime - __s); + + __gthread_time_t __ts = + { + static_cast<std::time_t>(__s.count()), + static_cast<long>(__ns.count()) + }; + + ::nanosleep(&__ts, 0); + } +#endif + } + + // @} group threads +} + +#endif // _GLIBCXX_HAS_GTHREADS && _GLIBCXX_USE_C99_STDINT_TR1 + +#endif // __GXX_EXPERIMENTAL_CXX0X__ + +#endif // _GLIBCXX_THREAD |