chrono revision 262801
1// -*- C++ -*- 2//===---------------------------- chrono ----------------------------------===// 3// 4// The LLVM Compiler Infrastructure 5// 6// This file is dual licensed under the MIT and the University of Illinois Open 7// Source Licenses. See LICENSE.TXT for details. 8// 9//===----------------------------------------------------------------------===// 10 11#ifndef _LIBCPP_CHRONO 12#define _LIBCPP_CHRONO 13 14/* 15 chrono synopsis 16 17namespace std 18{ 19namespace chrono 20{ 21 22template <class ToDuration, class Rep, class Period> 23constexpr 24ToDuration 25duration_cast(const duration<Rep, Period>& fd); 26 27template <class Rep> struct treat_as_floating_point : is_floating_point<Rep> {}; 28 29template <class Rep> 30struct duration_values 31{ 32public: 33 static constexpr Rep zero(); 34 static constexpr Rep max(); 35 static constexpr Rep min(); 36}; 37 38// duration 39 40template <class Rep, class Period = ratio<1>> 41class duration 42{ 43 static_assert(!__is_duration<Rep>::value, "A duration representation can not be a duration"); 44 static_assert(__is_ratio<Period>::value, "Second template parameter of duration must be a std::ratio"); 45 static_assert(Period::num > 0, "duration period must be positive"); 46public: 47 typedef Rep rep; 48 typedef Period period; 49 50 constexpr duration() = default; 51 template <class Rep2> 52 constexpr explicit duration(const Rep2& r, 53 typename enable_if 54 < 55 is_convertible<Rep2, rep>::value && 56 (treat_as_floating_point<rep>::value || 57 !treat_as_floating_point<rep>::value && !treat_as_floating_point<Rep2>::value) 58 >::type* = 0); 59 60 // conversions 61 template <class Rep2, class Period2> 62 constexpr duration(const duration<Rep2, Period2>& d, 63 typename enable_if 64 < 65 treat_as_floating_point<rep>::value || 66 ratio_divide<Period2, period>::type::den == 1 67 >::type* = 0); 68 69 // observer 70 71 constexpr rep count() const; 72 73 // arithmetic 74 75 constexpr duration operator+() const; 76 constexpr duration operator-() const; 77 duration& operator++(); 78 duration operator++(int); 79 duration& operator--(); 80 duration operator--(int); 81 82 duration& operator+=(const duration& d); 83 duration& operator-=(const duration& d); 84 85 duration& operator*=(const rep& rhs); 86 duration& operator/=(const rep& rhs); 87 88 // special values 89 90 static constexpr duration zero(); 91 static constexpr duration min(); 92 static constexpr duration max(); 93}; 94 95typedef duration<long long, nano> nanoseconds; 96typedef duration<long long, micro> microseconds; 97typedef duration<long long, milli> milliseconds; 98typedef duration<long long > seconds; 99typedef duration< long, ratio< 60> > minutes; 100typedef duration< long, ratio<3600> > hours; 101 102template <class Clock, class Duration = typename Clock::duration> 103class time_point 104{ 105public: 106 typedef Clock clock; 107 typedef Duration duration; 108 typedef typename duration::rep rep; 109 typedef typename duration::period period; 110private: 111 duration d_; // exposition only 112 113public: 114 time_point(); // has value "epoch" // constexpr in C++14 115 explicit time_point(const duration& d); // same as time_point() + d // constexpr in C++14 116 117 // conversions 118 template <class Duration2> 119 time_point(const time_point<clock, Duration2>& t); // constexpr in C++14 120 121 // observer 122 123 duration time_since_epoch() const; // constexpr in C++14 124 125 // arithmetic 126 127 time_point& operator+=(const duration& d); 128 time_point& operator-=(const duration& d); 129 130 // special values 131 132 static constexpr time_point min(); 133 static constexpr time_point max(); 134}; 135 136} // chrono 137 138// common_type traits 139template <class Rep1, class Period1, class Rep2, class Period2> 140 struct common_type<chrono::duration<Rep1, Period1>, chrono::duration<Rep2, Period2>>; 141 142template <class Clock, class Duration1, class Duration2> 143 struct common_type<chrono::time_point<Clock, Duration1>, chrono::time_point<Clock, Duration2>>; 144 145namespace chrono { 146 147// duration arithmetic 148template <class Rep1, class Period1, class Rep2, class Period2> 149 constexpr 150 typename common_type<duration<Rep1, Period1>, duration<Rep2, Period2>>::type 151 operator+(const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs); 152template <class Rep1, class Period1, class Rep2, class Period2> 153 constexpr 154 typename common_type<duration<Rep1, Period1>, duration<Rep2, Period2>>::type 155 operator-(const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs); 156template <class Rep1, class Period, class Rep2> 157 constexpr 158 duration<typename common_type<Rep1, Rep2>::type, Period> 159 operator*(const duration<Rep1, Period>& d, const Rep2& s); 160template <class Rep1, class Period, class Rep2> 161 constexpr 162 duration<typename common_type<Rep1, Rep2>::type, Period> 163 operator*(const Rep1& s, const duration<Rep2, Period>& d); 164template <class Rep1, class Period, class Rep2> 165 constexpr 166 duration<typename common_type<Rep1, Rep2>::type, Period> 167 operator/(const duration<Rep1, Period>& d, const Rep2& s); 168template <class Rep1, class Period1, class Rep2, class Period2> 169 constexpr 170 typename common_type<Rep1, Rep2>::type 171 operator/(const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs); 172 173// duration comparisons 174template <class Rep1, class Period1, class Rep2, class Period2> 175 constexpr 176 bool operator==(const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs); 177template <class Rep1, class Period1, class Rep2, class Period2> 178 constexpr 179 bool operator!=(const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs); 180template <class Rep1, class Period1, class Rep2, class Period2> 181 constexpr 182 bool operator< (const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs); 183template <class Rep1, class Period1, class Rep2, class Period2> 184 constexpr 185 bool operator<=(const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs); 186template <class Rep1, class Period1, class Rep2, class Period2> 187 constexpr 188 bool operator> (const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs); 189template <class Rep1, class Period1, class Rep2, class Period2> 190 constexpr 191 bool operator>=(const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs); 192 193// duration_cast 194template <class ToDuration, class Rep, class Period> 195 ToDuration duration_cast(const duration<Rep, Period>& d); 196 197// time_point arithmetic (all constexpr in C++14) 198template <class Clock, class Duration1, class Rep2, class Period2> 199 time_point<Clock, typename common_type<Duration1, duration<Rep2, Period2>>::type> 200 operator+(const time_point<Clock, Duration1>& lhs, const duration<Rep2, Period2>& rhs); 201template <class Rep1, class Period1, class Clock, class Duration2> 202 time_point<Clock, typename common_type<duration<Rep1, Period1>, Duration2>::type> 203 operator+(const duration<Rep1, Period1>& lhs, const time_point<Clock, Duration2>& rhs); 204template <class Clock, class Duration1, class Rep2, class Period2> 205 time_point<Clock, typename common_type<Duration1, duration<Rep2, Period2>>::type> 206 operator-(const time_point<Clock, Duration1>& lhs, const duration<Rep2, Period2>& rhs); 207template <class Clock, class Duration1, class Duration2> 208 typename common_type<Duration1, Duration2>::type 209 operator-(const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs); 210 211// time_point comparisons (all constexpr in C++14) 212template <class Clock, class Duration1, class Duration2> 213 bool operator==(const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs); 214template <class Clock, class Duration1, class Duration2> 215 bool operator!=(const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs); 216template <class Clock, class Duration1, class Duration2> 217 bool operator< (const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs); 218template <class Clock, class Duration1, class Duration2> 219 bool operator<=(const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs); 220template <class Clock, class Duration1, class Duration2> 221 bool operator> (const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs); 222template <class Clock, class Duration1, class Duration2> 223 bool operator>=(const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs); 224 225// time_point_cast (constexpr in C++14) 226 227template <class ToDuration, class Clock, class Duration> 228 time_point<Clock, ToDuration> time_point_cast(const time_point<Clock, Duration>& t); 229 230// Clocks 231 232class system_clock 233{ 234public: 235 typedef microseconds duration; 236 typedef duration::rep rep; 237 typedef duration::period period; 238 typedef chrono::time_point<system_clock> time_point; 239 static const bool is_steady = false; // constexpr in C++14 240 241 static time_point now() noexcept; 242 static time_t to_time_t (const time_point& __t) noexcept; 243 static time_point from_time_t(time_t __t) noexcept; 244}; 245 246class steady_clock 247{ 248public: 249 typedef nanoseconds duration; 250 typedef duration::rep rep; 251 typedef duration::period period; 252 typedef chrono::time_point<steady_clock, duration> time_point; 253 static const bool is_steady = true; // constexpr in C++14 254 255 static time_point now() noexcept; 256}; 257 258typedef steady_clock high_resolution_clock; 259 260} // chrono 261 262constexpr chrono::hours operator "" h(unsigned long long); // C++14 263constexpr chrono::duration<unspecified , ratio<3600,1>> operator "" h(long double); // C++14 264constexpr chrono::minutes operator "" min(unsigned long long); // C++14 265constexpr chrono::duration<unspecified , ratio<60,1>> operator "" min(long double); // C++14 266constexpr chrono::seconds operator "" s(unsigned long long); // C++14 267constexpr chrono::duration<unspecified > operator "" s(long double); // C++14 268constexpr chrono::milliseconds operator "" ms(unsigned long long); // C++14 269constexpr chrono::duration<unspecified , milli> operator "" ms(long double); // C++14 270constexpr chrono::microseconds operator "" us(unsigned long long); // C++14 271constexpr chrono::duration<unspecified , micro> operator "" us(long double); // C++14 272constexpr chrono::nanoseconds operator "" ns(unsigned long long); // C++14 273constexpr chrono::duration<unspecified , nano> operator "" ns(long double); // C++14 274 275} // std 276*/ 277 278#include <__config> 279#include <ctime> 280#include <type_traits> 281#include <ratio> 282#include <limits> 283 284#include <__undef_min_max> 285 286#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 287#pragma GCC system_header 288#endif 289 290_LIBCPP_BEGIN_NAMESPACE_STD 291 292namespace chrono 293{ 294 295template <class _Rep, class _Period = ratio<1> > class _LIBCPP_TYPE_VIS_ONLY duration; 296 297template <class _Tp> 298struct __is_duration : false_type {}; 299 300template <class _Rep, class _Period> 301struct __is_duration<duration<_Rep, _Period> > : true_type {}; 302 303template <class _Rep, class _Period> 304struct __is_duration<const duration<_Rep, _Period> > : true_type {}; 305 306template <class _Rep, class _Period> 307struct __is_duration<volatile duration<_Rep, _Period> > : true_type {}; 308 309template <class _Rep, class _Period> 310struct __is_duration<const volatile duration<_Rep, _Period> > : true_type {}; 311 312} // chrono 313 314template <class _Rep1, class _Period1, class _Rep2, class _Period2> 315struct _LIBCPP_TYPE_VIS_ONLY common_type<chrono::duration<_Rep1, _Period1>, 316 chrono::duration<_Rep2, _Period2> > 317{ 318 typedef chrono::duration<typename common_type<_Rep1, _Rep2>::type, 319 typename __ratio_gcd<_Period1, _Period2>::type> type; 320}; 321 322namespace chrono { 323 324// duration_cast 325 326template <class _FromDuration, class _ToDuration, 327 class _Period = typename ratio_divide<typename _FromDuration::period, typename _ToDuration::period>::type, 328 bool = _Period::num == 1, 329 bool = _Period::den == 1> 330struct __duration_cast; 331 332template <class _FromDuration, class _ToDuration, class _Period> 333struct __duration_cast<_FromDuration, _ToDuration, _Period, true, true> 334{ 335 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR 336 _ToDuration operator()(const _FromDuration& __fd) const 337 { 338 return _ToDuration(static_cast<typename _ToDuration::rep>(__fd.count())); 339 } 340}; 341 342template <class _FromDuration, class _ToDuration, class _Period> 343struct __duration_cast<_FromDuration, _ToDuration, _Period, true, false> 344{ 345 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR 346 _ToDuration operator()(const _FromDuration& __fd) const 347 { 348 typedef typename common_type<typename _ToDuration::rep, typename _FromDuration::rep, intmax_t>::type _Ct; 349 return _ToDuration(static_cast<typename _ToDuration::rep>( 350 static_cast<_Ct>(__fd.count()) / static_cast<_Ct>(_Period::den))); 351 } 352}; 353 354template <class _FromDuration, class _ToDuration, class _Period> 355struct __duration_cast<_FromDuration, _ToDuration, _Period, false, true> 356{ 357 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR 358 _ToDuration operator()(const _FromDuration& __fd) const 359 { 360 typedef typename common_type<typename _ToDuration::rep, typename _FromDuration::rep, intmax_t>::type _Ct; 361 return _ToDuration(static_cast<typename _ToDuration::rep>( 362 static_cast<_Ct>(__fd.count()) * static_cast<_Ct>(_Period::num))); 363 } 364}; 365 366template <class _FromDuration, class _ToDuration, class _Period> 367struct __duration_cast<_FromDuration, _ToDuration, _Period, false, false> 368{ 369 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR 370 _ToDuration operator()(const _FromDuration& __fd) const 371 { 372 typedef typename common_type<typename _ToDuration::rep, typename _FromDuration::rep, intmax_t>::type _Ct; 373 return _ToDuration(static_cast<typename _ToDuration::rep>( 374 static_cast<_Ct>(__fd.count()) * static_cast<_Ct>(_Period::num) 375 / static_cast<_Ct>(_Period::den))); 376 } 377}; 378 379template <class _ToDuration, class _Rep, class _Period> 380inline _LIBCPP_INLINE_VISIBILITY 381_LIBCPP_CONSTEXPR 382typename enable_if 383< 384 __is_duration<_ToDuration>::value, 385 _ToDuration 386>::type 387duration_cast(const duration<_Rep, _Period>& __fd) 388{ 389 return __duration_cast<duration<_Rep, _Period>, _ToDuration>()(__fd); 390} 391 392template <class _Rep> 393struct _LIBCPP_TYPE_VIS_ONLY treat_as_floating_point : is_floating_point<_Rep> {}; 394 395template <class _Rep> 396struct _LIBCPP_TYPE_VIS_ONLY duration_values 397{ 398public: 399 _LIBCPP_INLINE_VISIBILITY static _LIBCPP_CONSTEXPR _Rep zero() {return _Rep(0);} 400 _LIBCPP_INLINE_VISIBILITY static _LIBCPP_CONSTEXPR _Rep max() {return numeric_limits<_Rep>::max();} 401 _LIBCPP_INLINE_VISIBILITY static _LIBCPP_CONSTEXPR _Rep min() {return numeric_limits<_Rep>::lowest();} 402}; 403 404// duration 405 406template <class _Rep, class _Period> 407class _LIBCPP_TYPE_VIS_ONLY duration 408{ 409 static_assert(!__is_duration<_Rep>::value, "A duration representation can not be a duration"); 410 static_assert(__is_ratio<_Period>::value, "Second template parameter of duration must be a std::ratio"); 411 static_assert(_Period::num > 0, "duration period must be positive"); 412 413 template <class _R1, class _R2> 414 struct __no_overflow 415 { 416 private: 417 static const intmax_t __gcd_n1_n2 = __static_gcd<_R1::num, _R2::num>::value; 418 static const intmax_t __gcd_d1_d2 = __static_gcd<_R1::den, _R2::den>::value; 419 static const intmax_t __n1 = _R1::num / __gcd_n1_n2; 420 static const intmax_t __d1 = _R1::den / __gcd_d1_d2; 421 static const intmax_t __n2 = _R2::num / __gcd_n1_n2; 422 static const intmax_t __d2 = _R2::den / __gcd_d1_d2; 423 static const intmax_t max = -((intmax_t(1) << (sizeof(intmax_t) * CHAR_BIT - 1)) + 1); 424 425 template <intmax_t _Xp, intmax_t _Yp, bool __overflow> 426 struct __mul // __overflow == false 427 { 428 static const intmax_t value = _Xp * _Yp; 429 }; 430 431 template <intmax_t _Xp, intmax_t _Yp> 432 struct __mul<_Xp, _Yp, true> 433 { 434 static const intmax_t value = 1; 435 }; 436 437 public: 438 static const bool value = (__n1 <= max / __d2) && (__n2 <= max / __d1); 439 typedef ratio<__mul<__n1, __d2, !value>::value, 440 __mul<__n2, __d1, !value>::value> type; 441 }; 442 443public: 444 typedef _Rep rep; 445 typedef _Period period; 446private: 447 rep __rep_; 448public: 449 450 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR 451#ifndef _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS 452 duration() = default; 453#else 454 duration() {} 455#endif 456 457 template <class _Rep2> 458 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR 459 explicit duration(const _Rep2& __r, 460 typename enable_if 461 < 462 is_convertible<_Rep2, rep>::value && 463 (treat_as_floating_point<rep>::value || 464 !treat_as_floating_point<_Rep2>::value) 465 >::type* = 0) 466 : __rep_(__r) {} 467 468 // conversions 469 template <class _Rep2, class _Period2> 470 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR 471 duration(const duration<_Rep2, _Period2>& __d, 472 typename enable_if 473 < 474 __no_overflow<_Period2, period>::value && ( 475 treat_as_floating_point<rep>::value || 476 (__no_overflow<_Period2, period>::type::den == 1 && 477 !treat_as_floating_point<_Rep2>::value)) 478 >::type* = 0) 479 : __rep_(_VSTD::chrono::duration_cast<duration>(__d).count()) {} 480 481 // observer 482 483 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR rep count() const {return __rep_;} 484 485 // arithmetic 486 487 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR duration operator+() const {return *this;} 488 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR duration operator-() const {return duration(-__rep_);} 489 _LIBCPP_INLINE_VISIBILITY duration& operator++() {++__rep_; return *this;} 490 _LIBCPP_INLINE_VISIBILITY duration operator++(int) {return duration(__rep_++);} 491 _LIBCPP_INLINE_VISIBILITY duration& operator--() {--__rep_; return *this;} 492 _LIBCPP_INLINE_VISIBILITY duration operator--(int) {return duration(__rep_--);} 493 494 _LIBCPP_INLINE_VISIBILITY duration& operator+=(const duration& __d) {__rep_ += __d.count(); return *this;} 495 _LIBCPP_INLINE_VISIBILITY duration& operator-=(const duration& __d) {__rep_ -= __d.count(); return *this;} 496 497 _LIBCPP_INLINE_VISIBILITY duration& operator*=(const rep& rhs) {__rep_ *= rhs; return *this;} 498 _LIBCPP_INLINE_VISIBILITY duration& operator/=(const rep& rhs) {__rep_ /= rhs; return *this;} 499 _LIBCPP_INLINE_VISIBILITY duration& operator%=(const rep& rhs) {__rep_ %= rhs; return *this;} 500 _LIBCPP_INLINE_VISIBILITY duration& operator%=(const duration& rhs) {__rep_ %= rhs.count(); return *this;} 501 502 // special values 503 504 _LIBCPP_INLINE_VISIBILITY static _LIBCPP_CONSTEXPR duration zero() {return duration(duration_values<rep>::zero());} 505 _LIBCPP_INLINE_VISIBILITY static _LIBCPP_CONSTEXPR duration min() {return duration(duration_values<rep>::min());} 506 _LIBCPP_INLINE_VISIBILITY static _LIBCPP_CONSTEXPR duration max() {return duration(duration_values<rep>::max());} 507}; 508 509typedef duration<long long, nano> nanoseconds; 510typedef duration<long long, micro> microseconds; 511typedef duration<long long, milli> milliseconds; 512typedef duration<long long > seconds; 513typedef duration< long, ratio< 60> > minutes; 514typedef duration< long, ratio<3600> > hours; 515 516// Duration == 517 518template <class _LhsDuration, class _RhsDuration> 519struct __duration_eq 520{ 521 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR 522 bool operator()(const _LhsDuration& __lhs, const _RhsDuration& __rhs) const 523 { 524 typedef typename common_type<_LhsDuration, _RhsDuration>::type _Ct; 525 return _Ct(__lhs).count() == _Ct(__rhs).count(); 526 } 527}; 528 529template <class _LhsDuration> 530struct __duration_eq<_LhsDuration, _LhsDuration> 531{ 532 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR 533 bool operator()(const _LhsDuration& __lhs, const _LhsDuration& __rhs) const 534 {return __lhs.count() == __rhs.count();} 535}; 536 537template <class _Rep1, class _Period1, class _Rep2, class _Period2> 538inline _LIBCPP_INLINE_VISIBILITY 539_LIBCPP_CONSTEXPR 540bool 541operator==(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs) 542{ 543 return __duration_eq<duration<_Rep1, _Period1>, duration<_Rep2, _Period2> >()(__lhs, __rhs); 544} 545 546// Duration != 547 548template <class _Rep1, class _Period1, class _Rep2, class _Period2> 549inline _LIBCPP_INLINE_VISIBILITY 550_LIBCPP_CONSTEXPR 551bool 552operator!=(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs) 553{ 554 return !(__lhs == __rhs); 555} 556 557// Duration < 558 559template <class _LhsDuration, class _RhsDuration> 560struct __duration_lt 561{ 562 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR 563 bool operator()(const _LhsDuration& __lhs, const _RhsDuration& __rhs) const 564 { 565 typedef typename common_type<_LhsDuration, _RhsDuration>::type _Ct; 566 return _Ct(__lhs).count() < _Ct(__rhs).count(); 567 } 568}; 569 570template <class _LhsDuration> 571struct __duration_lt<_LhsDuration, _LhsDuration> 572{ 573 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR 574 bool operator()(const _LhsDuration& __lhs, const _LhsDuration& __rhs) const 575 {return __lhs.count() < __rhs.count();} 576}; 577 578template <class _Rep1, class _Period1, class _Rep2, class _Period2> 579inline _LIBCPP_INLINE_VISIBILITY 580_LIBCPP_CONSTEXPR 581bool 582operator< (const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs) 583{ 584 return __duration_lt<duration<_Rep1, _Period1>, duration<_Rep2, _Period2> >()(__lhs, __rhs); 585} 586 587// Duration > 588 589template <class _Rep1, class _Period1, class _Rep2, class _Period2> 590inline _LIBCPP_INLINE_VISIBILITY 591_LIBCPP_CONSTEXPR 592bool 593operator> (const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs) 594{ 595 return __rhs < __lhs; 596} 597 598// Duration <= 599 600template <class _Rep1, class _Period1, class _Rep2, class _Period2> 601inline _LIBCPP_INLINE_VISIBILITY 602_LIBCPP_CONSTEXPR 603bool 604operator<=(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs) 605{ 606 return !(__rhs < __lhs); 607} 608 609// Duration >= 610 611template <class _Rep1, class _Period1, class _Rep2, class _Period2> 612inline _LIBCPP_INLINE_VISIBILITY 613_LIBCPP_CONSTEXPR 614bool 615operator>=(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs) 616{ 617 return !(__lhs < __rhs); 618} 619 620// Duration + 621 622template <class _Rep1, class _Period1, class _Rep2, class _Period2> 623inline _LIBCPP_INLINE_VISIBILITY 624_LIBCPP_CONSTEXPR 625typename common_type<duration<_Rep1, _Period1>, duration<_Rep2, _Period2> >::type 626operator+(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs) 627{ 628 typedef typename common_type<duration<_Rep1, _Period1>, duration<_Rep2, _Period2> >::type _Cd; 629 return _Cd(_Cd(__lhs).count() + _Cd(__rhs).count()); 630} 631 632// Duration - 633 634template <class _Rep1, class _Period1, class _Rep2, class _Period2> 635inline _LIBCPP_INLINE_VISIBILITY 636_LIBCPP_CONSTEXPR 637typename common_type<duration<_Rep1, _Period1>, duration<_Rep2, _Period2> >::type 638operator-(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs) 639{ 640 typedef typename common_type<duration<_Rep1, _Period1>, duration<_Rep2, _Period2> >::type _Cd; 641 return _Cd(_Cd(__lhs).count() - _Cd(__rhs).count()); 642} 643 644// Duration * 645 646template <class _Rep1, class _Period, class _Rep2> 647inline _LIBCPP_INLINE_VISIBILITY 648_LIBCPP_CONSTEXPR 649typename enable_if 650< 651 is_convertible<_Rep2, typename common_type<_Rep1, _Rep2>::type>::value, 652 duration<typename common_type<_Rep1, _Rep2>::type, _Period> 653>::type 654operator*(const duration<_Rep1, _Period>& __d, const _Rep2& __s) 655{ 656 typedef typename common_type<_Rep1, _Rep2>::type _Cr; 657 typedef duration<_Cr, _Period> _Cd; 658 return _Cd(_Cd(__d).count() * static_cast<_Cr>(__s)); 659} 660 661template <class _Rep1, class _Period, class _Rep2> 662inline _LIBCPP_INLINE_VISIBILITY 663_LIBCPP_CONSTEXPR 664typename enable_if 665< 666 is_convertible<_Rep1, typename common_type<_Rep1, _Rep2>::type>::value, 667 duration<typename common_type<_Rep1, _Rep2>::type, _Period> 668>::type 669operator*(const _Rep1& __s, const duration<_Rep2, _Period>& __d) 670{ 671 return __d * __s; 672} 673 674// Duration / 675 676template <class _Duration, class _Rep, bool = __is_duration<_Rep>::value> 677struct __duration_divide_result 678{ 679}; 680 681template <class _Duration, class _Rep2, 682 bool = is_convertible<_Rep2, 683 typename common_type<typename _Duration::rep, _Rep2>::type>::value> 684struct __duration_divide_imp 685{ 686}; 687 688template <class _Rep1, class _Period, class _Rep2> 689struct __duration_divide_imp<duration<_Rep1, _Period>, _Rep2, true> 690{ 691 typedef duration<typename common_type<_Rep1, _Rep2>::type, _Period> type; 692}; 693 694template <class _Rep1, class _Period, class _Rep2> 695struct __duration_divide_result<duration<_Rep1, _Period>, _Rep2, false> 696 : __duration_divide_imp<duration<_Rep1, _Period>, _Rep2> 697{ 698}; 699 700template <class _Rep1, class _Period, class _Rep2> 701inline _LIBCPP_INLINE_VISIBILITY 702_LIBCPP_CONSTEXPR 703typename __duration_divide_result<duration<_Rep1, _Period>, _Rep2>::type 704operator/(const duration<_Rep1, _Period>& __d, const _Rep2& __s) 705{ 706 typedef typename common_type<_Rep1, _Rep2>::type _Cr; 707 typedef duration<_Cr, _Period> _Cd; 708 return _Cd(_Cd(__d).count() / static_cast<_Cr>(__s)); 709} 710 711template <class _Rep1, class _Period1, class _Rep2, class _Period2> 712inline _LIBCPP_INLINE_VISIBILITY 713_LIBCPP_CONSTEXPR 714typename common_type<_Rep1, _Rep2>::type 715operator/(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs) 716{ 717 typedef typename common_type<duration<_Rep1, _Period1>, duration<_Rep2, _Period2> >::type _Ct; 718 return _Ct(__lhs).count() / _Ct(__rhs).count(); 719} 720 721// Duration % 722 723template <class _Rep1, class _Period, class _Rep2> 724inline _LIBCPP_INLINE_VISIBILITY 725_LIBCPP_CONSTEXPR 726typename __duration_divide_result<duration<_Rep1, _Period>, _Rep2>::type 727operator%(const duration<_Rep1, _Period>& __d, const _Rep2& __s) 728{ 729 typedef typename common_type<_Rep1, _Rep2>::type _Cr; 730 typedef duration<_Cr, _Period> _Cd; 731 return _Cd(_Cd(__d).count() % static_cast<_Cr>(__s)); 732} 733 734template <class _Rep1, class _Period1, class _Rep2, class _Period2> 735inline _LIBCPP_INLINE_VISIBILITY 736_LIBCPP_CONSTEXPR 737typename common_type<duration<_Rep1, _Period1>, duration<_Rep2, _Period2> >::type 738operator%(const duration<_Rep1, _Period1>& __lhs, const duration<_Rep2, _Period2>& __rhs) 739{ 740 typedef typename common_type<_Rep1, _Rep2>::type _Cr; 741 typedef typename common_type<duration<_Rep1, _Period1>, duration<_Rep2, _Period2> >::type _Cd; 742 return _Cd(static_cast<_Cr>(_Cd(__lhs).count()) % static_cast<_Cr>(_Cd(__rhs).count())); 743} 744 745////////////////////////////////////////////////////////// 746///////////////////// time_point ///////////////////////// 747////////////////////////////////////////////////////////// 748 749template <class _Clock, class _Duration = typename _Clock::duration> 750class _LIBCPP_TYPE_VIS_ONLY time_point 751{ 752 static_assert(__is_duration<_Duration>::value, 753 "Second template parameter of time_point must be a std::chrono::duration"); 754public: 755 typedef _Clock clock; 756 typedef _Duration duration; 757 typedef typename duration::rep rep; 758 typedef typename duration::period period; 759private: 760 duration __d_; 761 762public: 763 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 time_point() : __d_(duration::zero()) {} 764 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 explicit time_point(const duration& __d) : __d_(__d) {} 765 766 // conversions 767 template <class _Duration2> 768 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 769 time_point(const time_point<clock, _Duration2>& t, 770 typename enable_if 771 < 772 is_convertible<_Duration2, duration>::value 773 >::type* = 0) 774 : __d_(t.time_since_epoch()) {} 775 776 // observer 777 778 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 duration time_since_epoch() const {return __d_;} 779 780 // arithmetic 781 782 _LIBCPP_INLINE_VISIBILITY time_point& operator+=(const duration& __d) {__d_ += __d; return *this;} 783 _LIBCPP_INLINE_VISIBILITY time_point& operator-=(const duration& __d) {__d_ -= __d; return *this;} 784 785 // special values 786 787 _LIBCPP_INLINE_VISIBILITY static _LIBCPP_CONSTEXPR time_point min() {return time_point(duration::min());} 788 _LIBCPP_INLINE_VISIBILITY static _LIBCPP_CONSTEXPR time_point max() {return time_point(duration::max());} 789}; 790 791} // chrono 792 793template <class _Clock, class _Duration1, class _Duration2> 794struct _LIBCPP_TYPE_VIS_ONLY common_type<chrono::time_point<_Clock, _Duration1>, 795 chrono::time_point<_Clock, _Duration2> > 796{ 797 typedef chrono::time_point<_Clock, typename common_type<_Duration1, _Duration2>::type> type; 798}; 799 800namespace chrono { 801 802template <class _ToDuration, class _Clock, class _Duration> 803inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 804time_point<_Clock, _ToDuration> 805time_point_cast(const time_point<_Clock, _Duration>& __t) 806{ 807 return time_point<_Clock, _ToDuration>(_VSTD::chrono::duration_cast<_ToDuration>(__t.time_since_epoch())); 808} 809 810// time_point == 811 812template <class _Clock, class _Duration1, class _Duration2> 813inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 814bool 815operator==(const time_point<_Clock, _Duration1>& __lhs, const time_point<_Clock, _Duration2>& __rhs) 816{ 817 return __lhs.time_since_epoch() == __rhs.time_since_epoch(); 818} 819 820// time_point != 821 822template <class _Clock, class _Duration1, class _Duration2> 823inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 824bool 825operator!=(const time_point<_Clock, _Duration1>& __lhs, const time_point<_Clock, _Duration2>& __rhs) 826{ 827 return !(__lhs == __rhs); 828} 829 830// time_point < 831 832template <class _Clock, class _Duration1, class _Duration2> 833inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 834bool 835operator<(const time_point<_Clock, _Duration1>& __lhs, const time_point<_Clock, _Duration2>& __rhs) 836{ 837 return __lhs.time_since_epoch() < __rhs.time_since_epoch(); 838} 839 840// time_point > 841 842template <class _Clock, class _Duration1, class _Duration2> 843inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 844bool 845operator>(const time_point<_Clock, _Duration1>& __lhs, const time_point<_Clock, _Duration2>& __rhs) 846{ 847 return __rhs < __lhs; 848} 849 850// time_point <= 851 852template <class _Clock, class _Duration1, class _Duration2> 853inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 854bool 855operator<=(const time_point<_Clock, _Duration1>& __lhs, const time_point<_Clock, _Duration2>& __rhs) 856{ 857 return !(__rhs < __lhs); 858} 859 860// time_point >= 861 862template <class _Clock, class _Duration1, class _Duration2> 863inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 864bool 865operator>=(const time_point<_Clock, _Duration1>& __lhs, const time_point<_Clock, _Duration2>& __rhs) 866{ 867 return !(__lhs < __rhs); 868} 869 870// time_point operator+(time_point x, duration y); 871 872template <class _Clock, class _Duration1, class _Rep2, class _Period2> 873inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 874time_point<_Clock, typename common_type<_Duration1, duration<_Rep2, _Period2> >::type> 875operator+(const time_point<_Clock, _Duration1>& __lhs, const duration<_Rep2, _Period2>& __rhs) 876{ 877 typedef time_point<_Clock, typename common_type<_Duration1, duration<_Rep2, _Period2> >::type> _Tr; 878 return _Tr (__lhs.time_since_epoch() + __rhs); 879} 880 881// time_point operator+(duration x, time_point y); 882 883template <class _Rep1, class _Period1, class _Clock, class _Duration2> 884inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 885time_point<_Clock, typename common_type<duration<_Rep1, _Period1>, _Duration2>::type> 886operator+(const duration<_Rep1, _Period1>& __lhs, const time_point<_Clock, _Duration2>& __rhs) 887{ 888 return __rhs + __lhs; 889} 890 891// time_point operator-(time_point x, duration y); 892 893template <class _Clock, class _Duration1, class _Rep2, class _Period2> 894inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 895time_point<_Clock, typename common_type<_Duration1, duration<_Rep2, _Period2> >::type> 896operator-(const time_point<_Clock, _Duration1>& __lhs, const duration<_Rep2, _Period2>& __rhs) 897{ 898 return __lhs + (-__rhs); 899} 900 901// duration operator-(time_point x, time_point y); 902 903template <class _Clock, class _Duration1, class _Duration2> 904inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 905typename common_type<_Duration1, _Duration2>::type 906operator-(const time_point<_Clock, _Duration1>& __lhs, const time_point<_Clock, _Duration2>& __rhs) 907{ 908 return __lhs.time_since_epoch() - __rhs.time_since_epoch(); 909} 910 911////////////////////////////////////////////////////////// 912/////////////////////// clocks /////////////////////////// 913////////////////////////////////////////////////////////// 914 915class _LIBCPP_TYPE_VIS system_clock 916{ 917public: 918 typedef microseconds duration; 919 typedef duration::rep rep; 920 typedef duration::period period; 921 typedef chrono::time_point<system_clock> time_point; 922 static _LIBCPP_CONSTEXPR_AFTER_CXX11 const bool is_steady = false; 923 924 static time_point now() _NOEXCEPT; 925 static time_t to_time_t (const time_point& __t) _NOEXCEPT; 926 static time_point from_time_t(time_t __t) _NOEXCEPT; 927}; 928 929class _LIBCPP_TYPE_VIS steady_clock 930{ 931public: 932 typedef nanoseconds duration; 933 typedef duration::rep rep; 934 typedef duration::period period; 935 typedef chrono::time_point<steady_clock, duration> time_point; 936 static _LIBCPP_CONSTEXPR_AFTER_CXX11 const bool is_steady = true; 937 938 static time_point now() _NOEXCEPT; 939}; 940 941typedef steady_clock high_resolution_clock; 942 943} // chrono 944 945#if _LIBCPP_STD_VER > 11 946// Suffixes for duration literals [time.duration.literals] 947inline namespace literals 948{ 949 inline namespace chrono_literals 950 { 951 952 constexpr chrono::hours operator"" h(unsigned long long __h) 953 { 954 return chrono::hours(static_cast<chrono::hours::rep>(__h)); 955 } 956 957 constexpr chrono::duration<long double, ratio<3600,1>> operator"" h(long double __h) 958 { 959 return chrono::duration<long double, ratio<3600,1>>(__h); 960 } 961 962 963 constexpr chrono::minutes operator"" min(unsigned long long __m) 964 { 965 return chrono::minutes(static_cast<chrono::minutes::rep>(__m)); 966 } 967 968 constexpr chrono::duration<long double, ratio<60,1>> operator"" min(long double __m) 969 { 970 return chrono::duration<long double, ratio<60,1>> (__m); 971 } 972 973 974 constexpr chrono::seconds operator"" s(unsigned long long __s) 975 { 976 return chrono::seconds(static_cast<chrono::seconds::rep>(__s)); 977 } 978 979 constexpr chrono::duration<long double> operator"" s(long double __s) 980 { 981 return chrono::duration<long double> (__s); 982 } 983 984 985 constexpr chrono::milliseconds operator"" ms(unsigned long long __ms) 986 { 987 return chrono::milliseconds(static_cast<chrono::milliseconds::rep>(__ms)); 988 } 989 990 constexpr chrono::duration<long double, milli> operator"" ms(long double __ms) 991 { 992 return chrono::duration<long double, milli>(__ms); 993 } 994 995 996 constexpr chrono::microseconds operator"" us(unsigned long long __us) 997 { 998 return chrono::microseconds(static_cast<chrono::microseconds::rep>(__us)); 999 } 1000 1001 constexpr chrono::duration<long double, micro> operator"" us(long double __us) 1002 { 1003 return chrono::duration<long double, micro> (__us); 1004 } 1005 1006 1007 constexpr chrono::nanoseconds operator"" ns(unsigned long long __ns) 1008 { 1009 return chrono::nanoseconds(static_cast<chrono::nanoseconds::rep>(__ns)); 1010 } 1011 1012 constexpr chrono::duration<long double, nano> operator"" ns(long double __ns) 1013 { 1014 return chrono::duration<long double, nano> (__ns); 1015 } 1016 1017}} 1018 1019namespace chrono { // hoist the literals into namespace std::chrono 1020 using namespace literals::chrono_literals; 1021} 1022 1023#endif 1024 1025_LIBCPP_END_NAMESPACE_STD 1026 1027#endif // _LIBCPP_CHRONO 1028