Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 1 | // -*- C++ -*- |
| 2 | //===--------------------------- thread -----------------------------------===// |
| 3 | // |
Howard Hinnant | f5256e1 | 2010-05-11 21:36:01 +0000 | [diff] [blame] | 4 | // The LLVM Compiler Infrastructure |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 5 | // |
Howard Hinnant | b64f8b0 | 2010-11-16 22:09:02 +0000 | [diff] [blame] | 6 | // This file is dual licensed under the MIT and the University of Illinois Open |
| 7 | // Source Licenses. See LICENSE.TXT for details. |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 8 | // |
| 9 | //===----------------------------------------------------------------------===// |
| 10 | |
| 11 | #ifndef _LIBCPP_THREAD |
| 12 | #define _LIBCPP_THREAD |
| 13 | |
| 14 | /* |
| 15 | |
| 16 | thread synopsis |
| 17 | |
Howard Hinnant | a785e4e | 2010-08-21 21:01:59 +0000 | [diff] [blame] | 18 | #define __STDCPP_THREADS__ __cplusplus |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 19 | |
| 20 | namespace std |
| 21 | { |
| 22 | |
| 23 | class thread |
| 24 | { |
| 25 | public: |
| 26 | class id; |
| 27 | typedef pthread_t native_handle_type; |
| 28 | |
Howard Hinnant | 6e1d851 | 2012-07-21 16:50:47 +0000 | [diff] [blame] | 29 | thread() noexcept; |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 30 | template <class F, class ...Args> explicit thread(F&& f, Args&&... args); |
| 31 | ~thread(); |
| 32 | |
| 33 | thread(const thread&) = delete; |
Howard Hinnant | 6e1d851 | 2012-07-21 16:50:47 +0000 | [diff] [blame] | 34 | thread(thread&& t) noexcept; |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 35 | |
| 36 | thread& operator=(const thread&) = delete; |
Howard Hinnant | 6e1d851 | 2012-07-21 16:50:47 +0000 | [diff] [blame] | 37 | thread& operator=(thread&& t) noexcept; |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 38 | |
Howard Hinnant | 6e1d851 | 2012-07-21 16:50:47 +0000 | [diff] [blame] | 39 | void swap(thread& t) noexcept; |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 40 | |
Howard Hinnant | 6e1d851 | 2012-07-21 16:50:47 +0000 | [diff] [blame] | 41 | bool joinable() const noexcept; |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 42 | void join(); |
| 43 | void detach(); |
Howard Hinnant | 6e1d851 | 2012-07-21 16:50:47 +0000 | [diff] [blame] | 44 | id get_id() const noexcept; |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 45 | native_handle_type native_handle(); |
| 46 | |
Howard Hinnant | 6e1d851 | 2012-07-21 16:50:47 +0000 | [diff] [blame] | 47 | static unsigned hardware_concurrency() noexcept; |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 48 | }; |
| 49 | |
Howard Hinnant | 6e1d851 | 2012-07-21 16:50:47 +0000 | [diff] [blame] | 50 | void swap(thread& x, thread& y) noexcept; |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 51 | |
| 52 | class thread::id |
| 53 | { |
| 54 | public: |
Howard Hinnant | 6e1d851 | 2012-07-21 16:50:47 +0000 | [diff] [blame] | 55 | id() noexcept; |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 56 | }; |
| 57 | |
Howard Hinnant | 6e1d851 | 2012-07-21 16:50:47 +0000 | [diff] [blame] | 58 | bool operator==(thread::id x, thread::id y) noexcept; |
| 59 | bool operator!=(thread::id x, thread::id y) noexcept; |
| 60 | bool operator< (thread::id x, thread::id y) noexcept; |
| 61 | bool operator<=(thread::id x, thread::id y) noexcept; |
| 62 | bool operator> (thread::id x, thread::id y) noexcept; |
| 63 | bool operator>=(thread::id x, thread::id y) noexcept; |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 64 | |
| 65 | template<class charT, class traits> |
| 66 | basic_ostream<charT, traits>& |
| 67 | operator<<(basic_ostream<charT, traits>& out, thread::id id); |
| 68 | |
| 69 | namespace this_thread |
| 70 | { |
| 71 | |
Howard Hinnant | 6e1d851 | 2012-07-21 16:50:47 +0000 | [diff] [blame] | 72 | thread::id get_id() noexcept; |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 73 | |
Howard Hinnant | 6e1d851 | 2012-07-21 16:50:47 +0000 | [diff] [blame] | 74 | void yield() noexcept; |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 75 | |
| 76 | template <class Clock, class Duration> |
| 77 | void sleep_until(const chrono::time_point<Clock, Duration>& abs_time); |
| 78 | |
| 79 | template <class Rep, class Period> |
| 80 | void sleep_for(const chrono::duration<Rep, Period>& rel_time); |
| 81 | |
| 82 | } // this_thread |
| 83 | |
| 84 | } // std |
| 85 | |
| 86 | */ |
| 87 | |
| 88 | #include <__config> |
| 89 | #include <iosfwd> |
| 90 | #include <__functional_base> |
| 91 | #include <type_traits> |
| 92 | #include <cstddef> |
| 93 | #include <functional> |
| 94 | #include <memory> |
| 95 | #include <system_error> |
| 96 | #include <chrono> |
| 97 | #include <__mutex_base> |
Howard Hinnant | 656bdc3 | 2011-05-16 18:40:35 +0000 | [diff] [blame] | 98 | #ifndef _LIBCPP_HAS_NO_VARIADICS |
| 99 | #include <tuple> |
| 100 | #endif |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 101 | #include <pthread.h> |
| 102 | |
Howard Hinnant | 08e1747 | 2011-10-17 20:05:10 +0000 | [diff] [blame] | 103 | #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 104 | #pragma GCC system_header |
Howard Hinnant | 08e1747 | 2011-10-17 20:05:10 +0000 | [diff] [blame] | 105 | #endif |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 106 | |
Howard Hinnant | a785e4e | 2010-08-21 21:01:59 +0000 | [diff] [blame] | 107 | #define __STDCPP_THREADS__ __cplusplus |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 108 | |
| 109 | _LIBCPP_BEGIN_NAMESPACE_STD |
| 110 | |
Howard Hinnant | 47499b1 | 2010-08-27 20:10:19 +0000 | [diff] [blame] | 111 | template <class _Tp> |
| 112 | class __thread_specific_ptr |
| 113 | { |
| 114 | pthread_key_t __key_; |
| 115 | |
| 116 | __thread_specific_ptr(const __thread_specific_ptr&); |
| 117 | __thread_specific_ptr& operator=(const __thread_specific_ptr&); |
| 118 | |
| 119 | static void __at_thread_exit(void*); |
| 120 | public: |
| 121 | typedef _Tp* pointer; |
| 122 | |
| 123 | __thread_specific_ptr(); |
| 124 | ~__thread_specific_ptr(); |
| 125 | |
Howard Hinnant | 8d7a955 | 2010-09-23 17:31:07 +0000 | [diff] [blame] | 126 | _LIBCPP_INLINE_VISIBILITY |
Howard Hinnant | 47499b1 | 2010-08-27 20:10:19 +0000 | [diff] [blame] | 127 | pointer get() const {return static_cast<_Tp*>(pthread_getspecific(__key_));} |
Howard Hinnant | 8d7a955 | 2010-09-23 17:31:07 +0000 | [diff] [blame] | 128 | _LIBCPP_INLINE_VISIBILITY |
Howard Hinnant | 47499b1 | 2010-08-27 20:10:19 +0000 | [diff] [blame] | 129 | pointer operator*() const {return *get();} |
Howard Hinnant | 8d7a955 | 2010-09-23 17:31:07 +0000 | [diff] [blame] | 130 | _LIBCPP_INLINE_VISIBILITY |
Howard Hinnant | 47499b1 | 2010-08-27 20:10:19 +0000 | [diff] [blame] | 131 | pointer operator->() const {return get();} |
| 132 | pointer release(); |
| 133 | void reset(pointer __p = nullptr); |
| 134 | }; |
| 135 | |
| 136 | template <class _Tp> |
| 137 | void |
| 138 | __thread_specific_ptr<_Tp>::__at_thread_exit(void* __p) |
| 139 | { |
Howard Hinnant | 8db4aca | 2011-10-17 20:08:59 +0000 | [diff] [blame] | 140 | delete static_cast<pointer>(__p); |
Howard Hinnant | 47499b1 | 2010-08-27 20:10:19 +0000 | [diff] [blame] | 141 | } |
| 142 | |
| 143 | template <class _Tp> |
| 144 | __thread_specific_ptr<_Tp>::__thread_specific_ptr() |
| 145 | { |
| 146 | int __ec = pthread_key_create(&__key_, &__thread_specific_ptr::__at_thread_exit); |
Howard Hinnant | 2c0d3ed | 2013-03-28 15:00:04 +0000 | [diff] [blame] | 147 | #ifndef _LIBCPP_NO_EXCEPTIONS |
Howard Hinnant | 8db4aca | 2011-10-17 20:08:59 +0000 | [diff] [blame] | 148 | if (__ec) |
| 149 | throw system_error(error_code(__ec, system_category()), |
| 150 | "__thread_specific_ptr construction failed"); |
Howard Hinnant | 2c0d3ed | 2013-03-28 15:00:04 +0000 | [diff] [blame] | 151 | #endif |
Howard Hinnant | 47499b1 | 2010-08-27 20:10:19 +0000 | [diff] [blame] | 152 | } |
| 153 | |
| 154 | template <class _Tp> |
| 155 | __thread_specific_ptr<_Tp>::~__thread_specific_ptr() |
| 156 | { |
Howard Hinnant | 8db4aca | 2011-10-17 20:08:59 +0000 | [diff] [blame] | 157 | pthread_key_delete(__key_); |
Howard Hinnant | 47499b1 | 2010-08-27 20:10:19 +0000 | [diff] [blame] | 158 | } |
| 159 | |
| 160 | template <class _Tp> |
| 161 | typename __thread_specific_ptr<_Tp>::pointer |
| 162 | __thread_specific_ptr<_Tp>::release() |
| 163 | { |
Howard Hinnant | 8db4aca | 2011-10-17 20:08:59 +0000 | [diff] [blame] | 164 | pointer __p = get(); |
| 165 | pthread_setspecific(__key_, 0); |
| 166 | return __p; |
Howard Hinnant | 47499b1 | 2010-08-27 20:10:19 +0000 | [diff] [blame] | 167 | } |
| 168 | |
| 169 | template <class _Tp> |
| 170 | void |
| 171 | __thread_specific_ptr<_Tp>::reset(pointer __p) |
| 172 | { |
Howard Hinnant | 8db4aca | 2011-10-17 20:08:59 +0000 | [diff] [blame] | 173 | pointer __p_old = get(); |
| 174 | pthread_setspecific(__key_, __p); |
| 175 | delete __p_old; |
Howard Hinnant | 47499b1 | 2010-08-27 20:10:19 +0000 | [diff] [blame] | 176 | } |
| 177 | |
Howard Hinnant | 83eade6 | 2013-03-06 23:30:19 +0000 | [diff] [blame] | 178 | class _LIBCPP_TYPE_VIS thread; |
| 179 | class _LIBCPP_TYPE_VIS __thread_id; |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 180 | |
| 181 | namespace this_thread |
| 182 | { |
| 183 | |
Howard Hinnant | 33be35e | 2012-09-14 00:39:16 +0000 | [diff] [blame] | 184 | _LIBCPP_INLINE_VISIBILITY __thread_id get_id() _NOEXCEPT; |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 185 | |
| 186 | } // this_thread |
| 187 | |
Howard Hinnant | 83eade6 | 2013-03-06 23:30:19 +0000 | [diff] [blame] | 188 | class _LIBCPP_TYPE_VIS __thread_id; |
| 189 | template<> struct _LIBCPP_TYPE_VIS hash<__thread_id>; |
Howard Hinnant | 40c13d3 | 2011-12-05 00:08:45 +0000 | [diff] [blame] | 190 | |
Howard Hinnant | 83eade6 | 2013-03-06 23:30:19 +0000 | [diff] [blame] | 191 | class _LIBCPP_TYPE_VIS __thread_id |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 192 | { |
Howard Hinnant | adff489 | 2010-05-24 17:49:41 +0000 | [diff] [blame] | 193 | // FIXME: pthread_t is a pointer on Darwin but a long on Linux. |
| 194 | // NULL is the no-thread value on Darwin. Someone needs to check |
| 195 | // on other platforms. We assume 0 works everywhere for now. |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 196 | pthread_t __id_; |
| 197 | |
| 198 | public: |
Howard Hinnant | 8d7a955 | 2010-09-23 17:31:07 +0000 | [diff] [blame] | 199 | _LIBCPP_INLINE_VISIBILITY |
Howard Hinnant | 6e1d851 | 2012-07-21 16:50:47 +0000 | [diff] [blame] | 200 | __thread_id() _NOEXCEPT : __id_(0) {} |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 201 | |
Howard Hinnant | 8d7a955 | 2010-09-23 17:31:07 +0000 | [diff] [blame] | 202 | friend _LIBCPP_INLINE_VISIBILITY |
Howard Hinnant | 6e1d851 | 2012-07-21 16:50:47 +0000 | [diff] [blame] | 203 | bool operator==(__thread_id __x, __thread_id __y) _NOEXCEPT |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 204 | {return __x.__id_ == __y.__id_;} |
Howard Hinnant | 8d7a955 | 2010-09-23 17:31:07 +0000 | [diff] [blame] | 205 | friend _LIBCPP_INLINE_VISIBILITY |
Howard Hinnant | 6e1d851 | 2012-07-21 16:50:47 +0000 | [diff] [blame] | 206 | bool operator!=(__thread_id __x, __thread_id __y) _NOEXCEPT |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 207 | {return !(__x == __y);} |
Howard Hinnant | 8d7a955 | 2010-09-23 17:31:07 +0000 | [diff] [blame] | 208 | friend _LIBCPP_INLINE_VISIBILITY |
Howard Hinnant | 6e1d851 | 2012-07-21 16:50:47 +0000 | [diff] [blame] | 209 | bool operator< (__thread_id __x, __thread_id __y) _NOEXCEPT |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 210 | {return __x.__id_ < __y.__id_;} |
Howard Hinnant | 8d7a955 | 2010-09-23 17:31:07 +0000 | [diff] [blame] | 211 | friend _LIBCPP_INLINE_VISIBILITY |
Howard Hinnant | 6e1d851 | 2012-07-21 16:50:47 +0000 | [diff] [blame] | 212 | bool operator<=(__thread_id __x, __thread_id __y) _NOEXCEPT |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 213 | {return !(__y < __x);} |
Howard Hinnant | 8d7a955 | 2010-09-23 17:31:07 +0000 | [diff] [blame] | 214 | friend _LIBCPP_INLINE_VISIBILITY |
Howard Hinnant | 6e1d851 | 2012-07-21 16:50:47 +0000 | [diff] [blame] | 215 | bool operator> (__thread_id __x, __thread_id __y) _NOEXCEPT |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 216 | {return __y < __x ;} |
Howard Hinnant | 8d7a955 | 2010-09-23 17:31:07 +0000 | [diff] [blame] | 217 | friend _LIBCPP_INLINE_VISIBILITY |
Howard Hinnant | 6e1d851 | 2012-07-21 16:50:47 +0000 | [diff] [blame] | 218 | bool operator>=(__thread_id __x, __thread_id __y) _NOEXCEPT |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 219 | {return !(__x < __y);} |
| 220 | |
| 221 | template<class _CharT, class _Traits> |
| 222 | friend |
Howard Hinnant | 8d7a955 | 2010-09-23 17:31:07 +0000 | [diff] [blame] | 223 | _LIBCPP_INLINE_VISIBILITY |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 224 | basic_ostream<_CharT, _Traits>& |
| 225 | operator<<(basic_ostream<_CharT, _Traits>& __os, __thread_id __id) |
| 226 | {return __os << __id.__id_;} |
| 227 | |
| 228 | private: |
Howard Hinnant | 8d7a955 | 2010-09-23 17:31:07 +0000 | [diff] [blame] | 229 | _LIBCPP_INLINE_VISIBILITY |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 230 | __thread_id(pthread_t __id) : __id_(__id) {} |
| 231 | |
Howard Hinnant | 96c60b4 | 2012-08-19 15:13:16 +0000 | [diff] [blame] | 232 | friend __thread_id this_thread::get_id() _NOEXCEPT; |
Howard Hinnant | 83eade6 | 2013-03-06 23:30:19 +0000 | [diff] [blame] | 233 | friend class _LIBCPP_TYPE_VIS thread; |
| 234 | friend struct _LIBCPP_TYPE_VIS hash<__thread_id>; |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 235 | }; |
| 236 | |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 237 | template<> |
Howard Hinnant | 83eade6 | 2013-03-06 23:30:19 +0000 | [diff] [blame] | 238 | struct _LIBCPP_TYPE_VIS hash<__thread_id> |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 239 | : public unary_function<__thread_id, size_t> |
| 240 | { |
Howard Hinnant | 8d7a955 | 2010-09-23 17:31:07 +0000 | [diff] [blame] | 241 | _LIBCPP_INLINE_VISIBILITY |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 242 | size_t operator()(__thread_id __v) const |
| 243 | { |
Howard Hinnant | 40c13d3 | 2011-12-05 00:08:45 +0000 | [diff] [blame] | 244 | return hash<pthread_t>()(__v.__id_); |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 245 | } |
| 246 | }; |
| 247 | |
| 248 | namespace this_thread |
| 249 | { |
| 250 | |
Howard Hinnant | 8d7a955 | 2010-09-23 17:31:07 +0000 | [diff] [blame] | 251 | inline _LIBCPP_INLINE_VISIBILITY |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 252 | __thread_id |
Howard Hinnant | 6e1d851 | 2012-07-21 16:50:47 +0000 | [diff] [blame] | 253 | get_id() _NOEXCEPT |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 254 | { |
| 255 | return pthread_self(); |
| 256 | } |
| 257 | |
| 258 | } // this_thread |
| 259 | |
Howard Hinnant | 83eade6 | 2013-03-06 23:30:19 +0000 | [diff] [blame] | 260 | class _LIBCPP_TYPE_VIS thread |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 261 | { |
| 262 | pthread_t __t_; |
| 263 | |
Howard Hinnant | 60a0a8e | 2010-08-10 20:48:29 +0000 | [diff] [blame] | 264 | thread(const thread&); |
| 265 | thread& operator=(const thread&); |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 266 | public: |
| 267 | typedef __thread_id id; |
| 268 | typedef pthread_t native_handle_type; |
| 269 | |
Howard Hinnant | 8d7a955 | 2010-09-23 17:31:07 +0000 | [diff] [blame] | 270 | _LIBCPP_INLINE_VISIBILITY |
Howard Hinnant | 6e1d851 | 2012-07-21 16:50:47 +0000 | [diff] [blame] | 271 | thread() _NOEXCEPT : __t_(0) {} |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 272 | #ifndef _LIBCPP_HAS_NO_VARIADICS |
Howard Hinnant | 9996844 | 2011-11-29 18:15:50 +0000 | [diff] [blame] | 273 | template <class _Fp, class ..._Args, |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 274 | class = typename enable_if |
| 275 | < |
Howard Hinnant | 9996844 | 2011-11-29 18:15:50 +0000 | [diff] [blame] | 276 | !is_same<typename decay<_Fp>::type, thread>::value |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 277 | >::type |
| 278 | > |
Howard Hinnant | 9996844 | 2011-11-29 18:15:50 +0000 | [diff] [blame] | 279 | explicit thread(_Fp&& __f, _Args&&... __args); |
Howard Hinnant | 324bb03 | 2010-08-22 00:02:43 +0000 | [diff] [blame] | 280 | #else // _LIBCPP_HAS_NO_VARIADICS |
Howard Hinnant | 9996844 | 2011-11-29 18:15:50 +0000 | [diff] [blame] | 281 | template <class _Fp> explicit thread(_Fp __f); |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 282 | #endif |
| 283 | ~thread(); |
| 284 | |
Howard Hinnant | 73d21a4 | 2010-09-04 23:28:19 +0000 | [diff] [blame] | 285 | #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES |
Howard Hinnant | 8d7a955 | 2010-09-23 17:31:07 +0000 | [diff] [blame] | 286 | _LIBCPP_INLINE_VISIBILITY |
Howard Hinnant | 6e1d851 | 2012-07-21 16:50:47 +0000 | [diff] [blame] | 287 | thread(thread&& __t) _NOEXCEPT : __t_(__t.__t_) {__t.__t_ = 0;} |
| 288 | thread& operator=(thread&& __t) _NOEXCEPT; |
Howard Hinnant | 73d21a4 | 2010-09-04 23:28:19 +0000 | [diff] [blame] | 289 | #endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 290 | |
Howard Hinnant | 8d7a955 | 2010-09-23 17:31:07 +0000 | [diff] [blame] | 291 | _LIBCPP_INLINE_VISIBILITY |
Howard Hinnant | 6e1d851 | 2012-07-21 16:50:47 +0000 | [diff] [blame] | 292 | void swap(thread& __t) _NOEXCEPT {_VSTD::swap(__t_, __t.__t_);} |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 293 | |
Howard Hinnant | 8d7a955 | 2010-09-23 17:31:07 +0000 | [diff] [blame] | 294 | _LIBCPP_INLINE_VISIBILITY |
Howard Hinnant | 6e1d851 | 2012-07-21 16:50:47 +0000 | [diff] [blame] | 295 | bool joinable() const _NOEXCEPT {return __t_ != 0;} |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 296 | void join(); |
| 297 | void detach(); |
Howard Hinnant | 8d7a955 | 2010-09-23 17:31:07 +0000 | [diff] [blame] | 298 | _LIBCPP_INLINE_VISIBILITY |
Howard Hinnant | 6e1d851 | 2012-07-21 16:50:47 +0000 | [diff] [blame] | 299 | id get_id() const _NOEXCEPT {return __t_;} |
Howard Hinnant | 8d7a955 | 2010-09-23 17:31:07 +0000 | [diff] [blame] | 300 | _LIBCPP_INLINE_VISIBILITY |
Howard Hinnant | 6e1d851 | 2012-07-21 16:50:47 +0000 | [diff] [blame] | 301 | native_handle_type native_handle() _NOEXCEPT {return __t_;} |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 302 | |
Howard Hinnant | 6e1d851 | 2012-07-21 16:50:47 +0000 | [diff] [blame] | 303 | static unsigned hardware_concurrency() _NOEXCEPT; |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 304 | }; |
| 305 | |
Howard Hinnant | 47499b1 | 2010-08-27 20:10:19 +0000 | [diff] [blame] | 306 | class __assoc_sub_state; |
| 307 | |
Howard Hinnant | 2d72b1e | 2010-12-17 14:46:43 +0000 | [diff] [blame] | 308 | class _LIBCPP_HIDDEN __thread_struct_imp; |
Howard Hinnant | 47499b1 | 2010-08-27 20:10:19 +0000 | [diff] [blame] | 309 | |
| 310 | class __thread_struct |
| 311 | { |
| 312 | __thread_struct_imp* __p_; |
| 313 | |
| 314 | __thread_struct(const __thread_struct&); |
| 315 | __thread_struct& operator=(const __thread_struct&); |
| 316 | public: |
| 317 | __thread_struct(); |
| 318 | ~__thread_struct(); |
| 319 | |
Howard Hinnant | e6e4d01 | 2010-09-03 21:46:37 +0000 | [diff] [blame] | 320 | void notify_all_at_thread_exit(condition_variable*, mutex*); |
Howard Hinnant | 47499b1 | 2010-08-27 20:10:19 +0000 | [diff] [blame] | 321 | void __make_ready_at_thread_exit(__assoc_sub_state*); |
| 322 | }; |
| 323 | |
Howard Hinnant | 5306d68 | 2010-10-14 19:18:04 +0000 | [diff] [blame] | 324 | __thread_specific_ptr<__thread_struct>& __thread_local_data(); |
Howard Hinnant | 47499b1 | 2010-08-27 20:10:19 +0000 | [diff] [blame] | 325 | |
Howard Hinnant | 656bdc3 | 2011-05-16 18:40:35 +0000 | [diff] [blame] | 326 | #ifndef _LIBCPP_HAS_NO_VARIADICS |
| 327 | |
Howard Hinnant | 9996844 | 2011-11-29 18:15:50 +0000 | [diff] [blame] | 328 | template <class _Fp, class ..._Args, size_t ..._Indices> |
Howard Hinnant | 656bdc3 | 2011-05-16 18:40:35 +0000 | [diff] [blame] | 329 | inline _LIBCPP_INLINE_VISIBILITY |
| 330 | void |
Howard Hinnant | c5e8961 | 2013-04-03 20:29:45 +0000 | [diff] [blame] | 331 | __thread_execute(tuple<_Fp, _Args...>& __t, __tuple_indices<_Indices...>) |
Howard Hinnant | 656bdc3 | 2011-05-16 18:40:35 +0000 | [diff] [blame] | 332 | { |
Howard Hinnant | 0949eed | 2011-06-30 21:18:19 +0000 | [diff] [blame] | 333 | __invoke(_VSTD::move(_VSTD::get<0>(__t)), _VSTD::move(_VSTD::get<_Indices>(__t))...); |
Howard Hinnant | 656bdc3 | 2011-05-16 18:40:35 +0000 | [diff] [blame] | 334 | } |
| 335 | |
Howard Hinnant | 9996844 | 2011-11-29 18:15:50 +0000 | [diff] [blame] | 336 | template <class _Fp> |
Howard Hinnant | 656bdc3 | 2011-05-16 18:40:35 +0000 | [diff] [blame] | 337 | void* |
| 338 | __thread_proxy(void* __vp) |
| 339 | { |
| 340 | __thread_local_data().reset(new __thread_struct); |
Howard Hinnant | 9996844 | 2011-11-29 18:15:50 +0000 | [diff] [blame] | 341 | std::unique_ptr<_Fp> __p(static_cast<_Fp*>(__vp)); |
| 342 | typedef typename __make_tuple_indices<tuple_size<_Fp>::value, 1>::type _Index; |
Howard Hinnant | c5e8961 | 2013-04-03 20:29:45 +0000 | [diff] [blame] | 343 | __thread_execute(*__p, _Index()); |
Howard Hinnant | 656bdc3 | 2011-05-16 18:40:35 +0000 | [diff] [blame] | 344 | return nullptr; |
| 345 | } |
| 346 | |
Howard Hinnant | 9996844 | 2011-11-29 18:15:50 +0000 | [diff] [blame] | 347 | template <class _Fp, class ..._Args, |
Howard Hinnant | 656bdc3 | 2011-05-16 18:40:35 +0000 | [diff] [blame] | 348 | class |
| 349 | > |
Howard Hinnant | 9996844 | 2011-11-29 18:15:50 +0000 | [diff] [blame] | 350 | thread::thread(_Fp&& __f, _Args&&... __args) |
Howard Hinnant | 656bdc3 | 2011-05-16 18:40:35 +0000 | [diff] [blame] | 351 | { |
Howard Hinnant | 9996844 | 2011-11-29 18:15:50 +0000 | [diff] [blame] | 352 | typedef tuple<typename decay<_Fp>::type, typename decay<_Args>::type...> _Gp; |
| 353 | _VSTD::unique_ptr<_Gp> __p(new _Gp(__decay_copy(_VSTD::forward<_Fp>(__f)), |
Howard Hinnant | 0949eed | 2011-06-30 21:18:19 +0000 | [diff] [blame] | 354 | __decay_copy(_VSTD::forward<_Args>(__args))...)); |
Howard Hinnant | 9996844 | 2011-11-29 18:15:50 +0000 | [diff] [blame] | 355 | int __ec = pthread_create(&__t_, 0, &__thread_proxy<_Gp>, __p.get()); |
Howard Hinnant | 656bdc3 | 2011-05-16 18:40:35 +0000 | [diff] [blame] | 356 | if (__ec == 0) |
| 357 | __p.release(); |
| 358 | else |
| 359 | __throw_system_error(__ec, "thread constructor failed"); |
| 360 | } |
| 361 | |
| 362 | #else // _LIBCPP_HAS_NO_VARIADICS |
| 363 | |
Howard Hinnant | 9996844 | 2011-11-29 18:15:50 +0000 | [diff] [blame] | 364 | template <class _Fp> |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 365 | void* |
| 366 | __thread_proxy(void* __vp) |
| 367 | { |
Howard Hinnant | 5306d68 | 2010-10-14 19:18:04 +0000 | [diff] [blame] | 368 | __thread_local_data().reset(new __thread_struct); |
Howard Hinnant | 9996844 | 2011-11-29 18:15:50 +0000 | [diff] [blame] | 369 | std::unique_ptr<_Fp> __p(static_cast<_Fp*>(__vp)); |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 370 | (*__p)(); |
| 371 | return nullptr; |
| 372 | } |
| 373 | |
Howard Hinnant | 9996844 | 2011-11-29 18:15:50 +0000 | [diff] [blame] | 374 | template <class _Fp> |
| 375 | thread::thread(_Fp __f) |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 376 | { |
Howard Hinnant | 9996844 | 2011-11-29 18:15:50 +0000 | [diff] [blame] | 377 | std::unique_ptr<_Fp> __p(new _Fp(__f)); |
| 378 | int __ec = pthread_create(&__t_, 0, &__thread_proxy<_Fp>, __p.get()); |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 379 | if (__ec == 0) |
| 380 | __p.release(); |
| 381 | else |
| 382 | __throw_system_error(__ec, "thread constructor failed"); |
| 383 | } |
| 384 | |
Howard Hinnant | 324bb03 | 2010-08-22 00:02:43 +0000 | [diff] [blame] | 385 | #endif // _LIBCPP_HAS_NO_VARIADICS |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 386 | |
Howard Hinnant | 73d21a4 | 2010-09-04 23:28:19 +0000 | [diff] [blame] | 387 | #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 388 | |
Howard Hinnant | 8d7a955 | 2010-09-23 17:31:07 +0000 | [diff] [blame] | 389 | inline _LIBCPP_INLINE_VISIBILITY |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 390 | thread& |
Howard Hinnant | 6e1d851 | 2012-07-21 16:50:47 +0000 | [diff] [blame] | 391 | thread::operator=(thread&& __t) _NOEXCEPT |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 392 | { |
Howard Hinnant | a6a062d | 2010-06-02 18:20:39 +0000 | [diff] [blame] | 393 | if (__t_ != 0) |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 394 | terminate(); |
| 395 | __t_ = __t.__t_; |
Howard Hinnant | a6a062d | 2010-06-02 18:20:39 +0000 | [diff] [blame] | 396 | __t.__t_ = 0; |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 397 | return *this; |
| 398 | } |
| 399 | |
Howard Hinnant | 73d21a4 | 2010-09-04 23:28:19 +0000 | [diff] [blame] | 400 | #endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 401 | |
Howard Hinnant | 8d7a955 | 2010-09-23 17:31:07 +0000 | [diff] [blame] | 402 | inline _LIBCPP_INLINE_VISIBILITY |
Howard Hinnant | 6e1d851 | 2012-07-21 16:50:47 +0000 | [diff] [blame] | 403 | void swap(thread& __x, thread& __y) _NOEXCEPT {__x.swap(__y);} |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 404 | |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 405 | namespace this_thread |
| 406 | { |
| 407 | |
| 408 | void sleep_for(const chrono::nanoseconds& ns); |
| 409 | |
| 410 | template <class _Rep, class _Period> |
| 411 | void |
| 412 | sleep_for(const chrono::duration<_Rep, _Period>& __d) |
| 413 | { |
| 414 | using namespace chrono; |
Howard Hinnant | cf115d2 | 2012-08-30 19:14:33 +0000 | [diff] [blame] | 415 | if (__d > duration<_Rep, _Period>::zero()) |
| 416 | { |
| 417 | _LIBCPP_CONSTEXPR duration<long double> _Max = nanoseconds::max(); |
| 418 | nanoseconds __ns; |
| 419 | if (__d < _Max) |
| 420 | { |
| 421 | __ns = duration_cast<nanoseconds>(__d); |
| 422 | if (__ns < __d) |
| 423 | ++__ns; |
| 424 | } |
| 425 | else |
| 426 | __ns = nanoseconds::max(); |
| 427 | sleep_for(__ns); |
| 428 | } |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 429 | } |
| 430 | |
| 431 | template <class _Clock, class _Duration> |
| 432 | void |
| 433 | sleep_until(const chrono::time_point<_Clock, _Duration>& __t) |
| 434 | { |
| 435 | using namespace chrono; |
| 436 | mutex __mut; |
| 437 | condition_variable __cv; |
| 438 | unique_lock<mutex> __lk(__mut); |
| 439 | while (_Clock::now() < __t) |
| 440 | __cv.wait_until(__lk, __t); |
| 441 | } |
| 442 | |
| 443 | template <class _Duration> |
Howard Hinnant | 8d7a955 | 2010-09-23 17:31:07 +0000 | [diff] [blame] | 444 | inline _LIBCPP_INLINE_VISIBILITY |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 445 | void |
Howard Hinnant | f8f8521 | 2010-11-20 19:16:30 +0000 | [diff] [blame] | 446 | sleep_until(const chrono::time_point<chrono::steady_clock, _Duration>& __t) |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 447 | { |
| 448 | using namespace chrono; |
Howard Hinnant | f8f8521 | 2010-11-20 19:16:30 +0000 | [diff] [blame] | 449 | sleep_for(__t - steady_clock::now()); |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 450 | } |
| 451 | |
Howard Hinnant | 8d7a955 | 2010-09-23 17:31:07 +0000 | [diff] [blame] | 452 | inline _LIBCPP_INLINE_VISIBILITY |
Howard Hinnant | 6e1d851 | 2012-07-21 16:50:47 +0000 | [diff] [blame] | 453 | void yield() _NOEXCEPT {sched_yield();} |
Howard Hinnant | bc8d3f9 | 2010-05-11 19:42:16 +0000 | [diff] [blame] | 454 | |
| 455 | } // this_thread |
| 456 | |
| 457 | _LIBCPP_END_NAMESPACE_STD |
| 458 | |
| 459 | #endif // _LIBCPP_THREAD |