1 // <thread> -*- C++ -*-
3 // Copyright (C) 2008, 2009 Free Software Foundation, Inc.
5 // This file is part of the GNU ISO C++ Library. This library is free
6 // software; you can redistribute it and/or modify it under the
7 // terms of the GNU General Public License as published by the
8 // Free Software Foundation; either version 2, or (at your option)
11 // This library is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 // GNU General Public License for more details.
16 // You should have received a copy of the GNU General Public License
17 // along with this library; see the file COPYING. If not, write to
18 // the Free Software Foundation, 51 Franklin Street, Fifth Floor,
19 // Boston, MA 02110-1301, USA.
21 // As a special exception, you may use this file as part of a free software
22 // library without restriction. Specifically, if other files instantiate
23 // templates or use macros or inline functions from this file, or you compile
24 // this file and link it with other files to produce an executable, this
25 // file does not by itself cause the resulting executable to be covered by
26 // the GNU General Public License. This exception does not however
27 // invalidate any other reasons why the executable file might be covered by
28 // the GNU General Public License.
31 * This is a Standard C++ Library header.
34 #ifndef _GLIBCXX_THREAD
35 #define _GLIBCXX_THREAD 1
37 #pragma GCC system_header
39 #ifndef __GXX_EXPERIMENTAL_CXX0X__
40 # include <c++0x_warning.h>
47 #include <condition_variable>
49 #include <bits/functexcept.h>
50 #include <bits/gthr.h>
52 #if defined(_GLIBCXX_HAS_GTHREADS) && defined(_GLIBCXX_USE_C99_STDINT_TR1)
56 class __thread_data_base;
58 typedef shared_ptr<__thread_data_base> __thread_data_ptr;
60 class __thread_data_base
63 __thread_data_base() = default;
64 virtual ~__thread_data_base() = default;
66 virtual void _M_run() = 0;
68 __gthread_t _M_thread_handle;
69 __thread_data_ptr _M_this_ptr;
72 template<typename _Callable>
73 class __thread_data : public __thread_data_base
76 __thread_data(_Callable&& __f)
77 : _M_func(std::forward<_Callable>(__f))
93 typedef __gthread_t native_handle_type;
98 template<typename _Callable>
99 explicit thread(_Callable __f)
100 : _M_thread_data(_M_make_thread_data(__f))
101 { _M_start_thread(); }
103 template<typename _Callable, typename... _Args>
104 thread(_Callable&& __f, _Args&&... __args)
105 : _M_thread_data(_M_make_thread_data(std::bind(__f, __args...)))
106 { _M_start_thread(); }
114 thread(const thread&) = delete;
118 thread& operator=(const thread&) = delete;
119 thread& operator=(thread&& __t)
130 { std::swap(_M_thread_data, __t._M_thread_data); }
134 { return _M_thread_data; }
145 /** @pre thread is joinable
149 { return _M_thread_data->_M_thread_handle; }
152 static unsigned hardware_concurrency();
155 template<typename _Callable>
157 _M_make_thread_data(_Callable&& __f)
159 return make_shared<__thread_data<_Callable>>(
160 std::forward<_Callable>(__f));
163 void _M_start_thread();
165 __thread_data_ptr _M_thread_data;
169 swap(thread& __x, thread& __y)
173 swap(thread&& __x, thread& __y)
177 swap(thread& __x, thread&& __y)
180 namespace this_thread
185 #ifdef _GLIBCXX_USE_SCHED_YIELD
188 { __gthread_yield(); }
191 #ifdef _GLIBCXX_USE_NANOSLEEP
192 template<typename _Clock, typename _Duration>
194 sleep_until(const chrono::time_point<_Clock, _Duration>& __atime)
195 { sleep_for(__atime - _Clock::now()); }
197 template<typename _Rep, typename _Period>
199 sleep_for(const chrono::duration<_Rep, _Period>& __rtime)
201 chrono::seconds __s =
202 chrono::duration_cast<chrono::seconds>(__rtime);
204 chrono::nanoseconds __ns =
205 chrono::duration_cast<chrono::nanoseconds>(__rtime - __s);
207 __gthread_time_t __ts =
209 static_cast<std::time_t>(__s.count()),
210 static_cast<long>(__ns.count())
213 ::nanosleep(&__ts, 0);
222 id() : _M_thread_id() { }
227 friend thread::id this_thread::get_id();
230 operator==(thread::id __x, thread::id __y)
231 { return __gthread_equal(__x._M_thread_id, __y._M_thread_id); }
234 operator<(thread::id __x, thread::id __y)
235 { return __x._M_thread_id < __y._M_thread_id; }
237 template<class _CharT, class _Traits>
238 friend basic_ostream<_CharT, _Traits>&
239 operator<<(basic_ostream<_CharT, _Traits>&& __out, thread::id __id);
246 __gthread_t _M_thread_id;
250 operator!=(thread::id __x, thread::id __y)
251 { return !(__x == __y); }
254 operator<=(thread::id __x, thread::id __y)
255 { return !(__y < __x); }
258 operator>(thread::id __x, thread::id __y)
259 { return __y < __x; }
262 operator>=(thread::id __x, thread::id __y)
263 { return !(__x < __y); }
265 template<class _CharT, class _Traits>
266 inline basic_ostream<_CharT, _Traits>&
267 operator<<(basic_ostream<_CharT, _Traits>&& __out, thread::id __id)
269 if(__id == thread::id())
270 return __out << "non-executing thread";
272 return __out << __id._M_thread_id;
276 thread::get_id() const
279 return thread::id(_M_thread_data->_M_thread_handle);
284 namespace this_thread
288 { return thread::id(__gthread_self()); }
292 #endif // _GLIBCXX_HAS_GTHREADS && _GLIBCXX_USE_C99_STDINT_TR1
294 #endif // __GXX_EXPERIMENTAL_CXX0X__
296 #endif // _GLIBCXX_THREAD