atomic revision 234976
160107Sobrien// -*- C++ -*- 28119Sasami//===--------------------------- atomic -----------------------------------===// 38119Sasami// 48119Sasami// The LLVM Compiler Infrastructure 58119Sasami// 68119Sasami// This file is distributed under the University of Illinois Open Source 78119Sasami// License. See LICENSE.TXT for details. 88119Sasami// 932822Syokota//===----------------------------------------------------------------------===// 108119Sasami 118119Sasami#ifndef _LIBCPP_ATOMIC 128119Sasami#define _LIBCPP_ATOMIC 1332822Syokota 148119Sasami/* 158119Sasami atomic synopsis 168119Sasami 178119Sasaminamespace std 1832822Syokota{ 1932822Syokota 208119Sasami// order and consistency 2138141Syokota 228119Sasamitypedef enum memory_order 238119Sasami{ 248119Sasami memory_order_relaxed, 258119Sasami memory_order_consume, // load-consume 268119Sasami memory_order_acquire, // load-acquire 278119Sasami memory_order_release, // store-release 288119Sasami memory_order_acq_rel, // store-release load-acquire 298119Sasami memory_order_seq_cst // store-release load-acquire 308119Sasami} memory_order; 318119Sasami 3232822Syokotatemplate <class T> T kill_dependency(T y) noexcept; 3332822Syokota 348119Sasami// lock-free property 358119Sasami 368119Sasami#define ATOMIC_CHAR_LOCK_FREE unspecified 378119Sasami#define ATOMIC_CHAR16_T_LOCK_FREE unspecified 388119Sasami#define ATOMIC_CHAR32_T_LOCK_FREE unspecified 398119Sasami#define ATOMIC_WCHAR_T_LOCK_FREE unspecified 408119Sasami#define ATOMIC_SHORT_LOCK_FREE unspecified 418119Sasami#define ATOMIC_INT_LOCK_FREE unspecified 428119Sasami#define ATOMIC_LONG_LOCK_FREE unspecified 438119Sasami#define ATOMIC_LLONG_LOCK_FREE unspecified 448119Sasami 458119Sasami// flag type and operations 468119Sasami 478119Sasamitypedef struct atomic_flag 488119Sasami{ 4932822Syokota bool test_and_set(memory_order m = memory_order_seq_cst) volatile noexcept; 508119Sasami bool test_and_set(memory_order m = memory_order_seq_cst) noexcept; 518119Sasami void clear(memory_order m = memory_order_seq_cst) volatile noexcept; 528119Sasami void clear(memory_order m = memory_order_seq_cst) noexcept; 538119Sasami atomic_flag() noexcept = default; 548119Sasami atomic_flag(const atomic_flag&) = delete; 558119Sasami atomic_flag& operator=(const atomic_flag&) = delete; 568119Sasami atomic_flag& operator=(const atomic_flag&) volatile = delete; 578119Sasami} atomic_flag; 588119Sasami 598119Sasamibool 608119Sasami atomic_flag_test_and_set(volatile atomic_flag* obj) noexcept; 6143334Syokota 628119Sasamibool 6332822Syokota atomic_flag_test_and_set(atomic_flag* obj) noexcept; 648119Sasami 658119Sasamibool 668119Sasami atomic_flag_test_and_set_explicit(volatile atomic_flag* obj, 678119Sasami memory_order m) noexcept; 688119Sasami 698119Sasamibool 708119Sasami atomic_flag_test_and_set_explicit(atomic_flag* obj, memory_order m) noexcept; 718119Sasami 728119Sasamivoid 738119Sasami atomic_flag_clear(volatile atomic_flag* obj) noexcept; 748119Sasami 758119Sasamivoid 768119Sasami atomic_flag_clear(atomic_flag* obj) noexcept; 778119Sasami 788119Sasamivoid 798119Sasami atomic_flag_clear_explicit(volatile atomic_flag* obj, memory_order m) noexcept; 808119Sasami 818119Sasamivoid 8238141Syokota atomic_flag_clear_explicit(atomic_flag* obj, memory_order m) noexcept; 838119Sasami 848119Sasami#define ATOMIC_FLAG_INIT see below 858119Sasami#define ATOMIC_VAR_INIT(value) see below 868119Sasami 878119Sasamitemplate <class T> 888119Sasamistruct atomic 8938141Syokota{ 908119Sasami bool is_lock_free() const volatile noexcept; 918119Sasami bool is_lock_free() const noexcept; 928119Sasami void store(T desr, memory_order m = memory_order_seq_cst) volatile noexcept; 938119Sasami void store(T desr, memory_order m = memory_order_seq_cst) noexcept; 948119Sasami T load(memory_order m = memory_order_seq_cst) const volatile noexcept; 9518194Ssos T load(memory_order m = memory_order_seq_cst) const noexcept; 968119Sasami operator T() const volatile noexcept; 978119Sasami operator T() const noexcept; 9874119Sache T exchange(T desr, memory_order m = memory_order_seq_cst) volatile noexcept; 998119Sasami T exchange(T desr, memory_order m = memory_order_seq_cst) noexcept; 1008119Sasami bool compare_exchange_weak(T& expc, T desr, 1018119Sasami memory_order s, memory_order f) volatile noexcept; 1028119Sasami bool compare_exchange_weak(T& expc, T desr, memory_order s, memory_order f) noexcept; 1038119Sasami bool compare_exchange_strong(T& expc, T desr, 1048119Sasami memory_order s, memory_order f) volatile noexcept; 1058119Sasami bool compare_exchange_strong(T& expc, T desr, 1068119Sasami memory_order s, memory_order f) noexcept; 1078119Sasami bool compare_exchange_weak(T& expc, T desr, 10874119Sache memory_order m = memory_order_seq_cst) volatile noexcept; 10938141Syokota bool compare_exchange_weak(T& expc, T desr, 11043334Syokota memory_order m = memory_order_seq_cst) noexcept; 11138141Syokota bool compare_exchange_strong(T& expc, T desr, 11238141Syokota memory_order m = memory_order_seq_cst) volatile noexcept; 11338141Syokota bool compare_exchange_strong(T& expc, T desr, 11443334Syokota memory_order m = memory_order_seq_cst) noexcept; 11538140Syokota 11638141Syokota atomic() noexcept = default; 11738141Syokota constexpr atomic(T desr) noexcept; 118270310Sse atomic(const atomic&) = delete; 119 atomic& operator=(const atomic&) = delete; 120 atomic& operator=(const atomic&) volatile = delete; 121 T operator=(T) volatile noexcept; 122 T operator=(T) noexcept; 123}; 124 125template <> 126struct atomic<integral> 127{ 128 bool is_lock_free() const volatile noexcept; 129 bool is_lock_free() const noexcept; 130 void store(integral desr, memory_order m = memory_order_seq_cst) volatile noexcept; 131 void store(integral desr, memory_order m = memory_order_seq_cst) noexcept; 132 integral load(memory_order m = memory_order_seq_cst) const volatile noexcept; 133 integral load(memory_order m = memory_order_seq_cst) const noexcept; 134 operator integral() const volatile noexcept; 135 operator integral() const noexcept; 136 integral exchange(integral desr, 137 memory_order m = memory_order_seq_cst) volatile noexcept; 138 integral exchange(integral desr, memory_order m = memory_order_seq_cst) noexcept; 139 bool compare_exchange_weak(integral& expc, integral desr, 140 memory_order s, memory_order f) volatile noexcept; 141 bool compare_exchange_weak(integral& expc, integral desr, 142 memory_order s, memory_order f) noexcept; 143 bool compare_exchange_strong(integral& expc, integral desr, 144 memory_order s, memory_order f) volatile noexcept; 145 bool compare_exchange_strong(integral& expc, integral desr, 146 memory_order s, memory_order f) noexcept; 147 bool compare_exchange_weak(integral& expc, integral desr, 148 memory_order m = memory_order_seq_cst) volatile noexcept; 149 bool compare_exchange_weak(integral& expc, integral desr, 150 memory_order m = memory_order_seq_cst) noexcept; 151 bool compare_exchange_strong(integral& expc, integral desr, 152 memory_order m = memory_order_seq_cst) volatile noexcept; 153 bool compare_exchange_strong(integral& expc, integral desr, 154 memory_order m = memory_order_seq_cst) noexcept; 155 156 integral 157 fetch_add(integral op, memory_order m = memory_order_seq_cst) volatile noexcept; 158 integral fetch_add(integral op, memory_order m = memory_order_seq_cst) noexcept; 159 integral 160 fetch_sub(integral op, memory_order m = memory_order_seq_cst) volatile noexcept; 161 integral fetch_sub(integral op, memory_order m = memory_order_seq_cst) noexcept; 162 integral 163 fetch_and(integral op, memory_order m = memory_order_seq_cst) volatile noexcept; 164 integral fetch_and(integral op, memory_order m = memory_order_seq_cst) noexcept; 165 integral 166 fetch_or(integral op, memory_order m = memory_order_seq_cst) volatile noexcept; 167 integral fetch_or(integral op, memory_order m = memory_order_seq_cst) noexcept; 168 integral 169 fetch_xor(integral op, memory_order m = memory_order_seq_cst) volatile noexcept; 170 integral fetch_xor(integral op, memory_order m = memory_order_seq_cst) noexcept; 171 172 atomic() noexcept = default; 173 constexpr atomic(integral desr) noexcept; 174 atomic(const atomic&) = delete; 175 atomic& operator=(const atomic&) = delete; 176 atomic& operator=(const atomic&) volatile = delete; 177 integral operator=(integral desr) volatile noexcept; 178 integral operator=(integral desr) noexcept; 179 180 integral operator++(int) volatile noexcept; 181 integral operator++(int) noexcept; 182 integral operator--(int) volatile noexcept; 183 integral operator--(int) noexcept; 184 integral operator++() volatile noexcept; 185 integral operator++() noexcept; 186 integral operator--() volatile noexcept; 187 integral operator--() noexcept; 188 integral operator+=(integral op) volatile noexcept; 189 integral operator+=(integral op) noexcept; 190 integral operator-=(integral op) volatile noexcept; 191 integral operator-=(integral op) noexcept; 192 integral operator&=(integral op) volatile noexcept; 193 integral operator&=(integral op) noexcept; 194 integral operator|=(integral op) volatile noexcept; 195 integral operator|=(integral op) noexcept; 196 integral operator^=(integral op) volatile noexcept; 197 integral operator^=(integral op) noexcept; 198}; 199 200template <class T> 201struct atomic<T*> 202{ 203 bool is_lock_free() const volatile noexcept; 204 bool is_lock_free() const noexcept; 205 void store(T* desr, memory_order m = memory_order_seq_cst) volatile noexcept; 206 void store(T* desr, memory_order m = memory_order_seq_cst) noexcept; 207 T* load(memory_order m = memory_order_seq_cst) const volatile noexcept; 208 T* load(memory_order m = memory_order_seq_cst) const noexcept; 209 operator T*() const volatile noexcept; 210 operator T*() const noexcept; 211 T* exchange(T* desr, memory_order m = memory_order_seq_cst) volatile noexcept; 212 T* exchange(T* desr, memory_order m = memory_order_seq_cst) noexcept; 213 bool compare_exchange_weak(T*& expc, T* desr, 214 memory_order s, memory_order f) volatile noexcept; 215 bool compare_exchange_weak(T*& expc, T* desr, 216 memory_order s, memory_order f) noexcept; 217 bool compare_exchange_strong(T*& expc, T* desr, 218 memory_order s, memory_order f) volatile noexcept; 219 bool compare_exchange_strong(T*& expc, T* desr, 220 memory_order s, memory_order f) noexcept; 221 bool compare_exchange_weak(T*& expc, T* desr, 222 memory_order m = memory_order_seq_cst) volatile noexcept; 223 bool compare_exchange_weak(T*& expc, T* desr, 224 memory_order m = memory_order_seq_cst) noexcept; 225 bool compare_exchange_strong(T*& expc, T* desr, 226 memory_order m = memory_order_seq_cst) volatile noexcept; 227 bool compare_exchange_strong(T*& expc, T* desr, 228 memory_order m = memory_order_seq_cst) noexcept; 229 T* fetch_add(ptrdiff_t op, memory_order m = memory_order_seq_cst) volatile noexcept; 230 T* fetch_add(ptrdiff_t op, memory_order m = memory_order_seq_cst) noexcept; 231 T* fetch_sub(ptrdiff_t op, memory_order m = memory_order_seq_cst) volatile noexcept; 232 T* fetch_sub(ptrdiff_t op, memory_order m = memory_order_seq_cst) noexcept; 233 234 atomic() noexcept = default; 235 constexpr atomic(T* desr) noexcept; 236 atomic(const atomic&) = delete; 237 atomic& operator=(const atomic&) = delete; 238 atomic& operator=(const atomic&) volatile = delete; 239 240 T* operator=(T*) volatile noexcept; 241 T* operator=(T*) noexcept; 242 T* operator++(int) volatile noexcept; 243 T* operator++(int) noexcept; 244 T* operator--(int) volatile noexcept; 245 T* operator--(int) noexcept; 246 T* operator++() volatile noexcept; 247 T* operator++() noexcept; 248 T* operator--() volatile noexcept; 249 T* operator--() noexcept; 250 T* operator+=(ptrdiff_t op) volatile noexcept; 251 T* operator+=(ptrdiff_t op) noexcept; 252 T* operator-=(ptrdiff_t op) volatile noexcept; 253 T* operator-=(ptrdiff_t op) noexcept; 254}; 255 256 257template <class T> 258 bool 259 atomic_is_lock_free(const volatile atomic<T>* obj) noexcept; 260 261template <class T> 262 bool 263 atomic_is_lock_free(const atomic<T>* obj) noexcept; 264 265template <class T> 266 void 267 atomic_init(volatile atomic<T>* obj, T desr) noexcept; 268 269template <class T> 270 void 271 atomic_init(atomic<T>* obj, T desr) noexcept; 272 273template <class T> 274 void 275 atomic_store(volatile atomic<T>* obj, T desr) noexcept; 276 277template <class T> 278 void 279 atomic_store(atomic<T>* obj, T desr) noexcept; 280 281template <class T> 282 void 283 atomic_store_explicit(volatile atomic<T>* obj, T desr, memory_order m) noexcept; 284 285template <class T> 286 void 287 atomic_store_explicit(atomic<T>* obj, T desr, memory_order m) noexcept; 288 289template <class T> 290 T 291 atomic_load(const volatile atomic<T>* obj) noexcept; 292 293template <class T> 294 T 295 atomic_load(const atomic<T>* obj) noexcept; 296 297template <class T> 298 T 299 atomic_load_explicit(const volatile atomic<T>* obj, memory_order m) noexcept; 300 301template <class T> 302 T 303 atomic_load_explicit(const atomic<T>* obj, memory_order m) noexcept; 304 305template <class T> 306 T 307 atomic_exchange(volatile atomic<T>* obj, T desr) noexcept; 308 309template <class T> 310 T 311 atomic_exchange(atomic<T>* obj, T desr) noexcept; 312 313template <class T> 314 T 315 atomic_exchange_explicit(volatile atomic<T>* obj, T desr, memory_order m) noexcept; 316 317template <class T> 318 T 319 atomic_exchange_explicit(atomic<T>* obj, T desr, memory_order m) noexcept; 320 321template <class T> 322 bool 323 atomic_compare_exchange_weak(volatile atomic<T>* obj, T* expc, T desr) noexcept; 324 325template <class T> 326 bool 327 atomic_compare_exchange_weak(atomic<T>* obj, T* expc, T desr) noexcept; 328 329template <class T> 330 bool 331 atomic_compare_exchange_strong(volatile atomic<T>* obj, T* expc, T desr) noexcept; 332 333template <class T> 334 bool 335 atomic_compare_exchange_strong(atomic<T>* obj, T* expc, T desr) noexcept; 336 337template <class T> 338 bool 339 atomic_compare_exchange_weak_explicit(volatile atomic<T>* obj, T* expc, 340 T desr, 341 memory_order s, memory_order f) noexcept; 342 343template <class T> 344 bool 345 atomic_compare_exchange_weak_explicit(atomic<T>* obj, T* expc, T desr, 346 memory_order s, memory_order f) noexcept; 347 348template <class T> 349 bool 350 atomic_compare_exchange_strong_explicit(volatile atomic<T>* obj, 351 T* expc, T desr, 352 memory_order s, memory_order f) noexcept; 353 354template <class T> 355 bool 356 atomic_compare_exchange_strong_explicit(atomic<T>* obj, T* expc, 357 T desr, 358 memory_order s, memory_order f) noexcept; 359 360template <class Integral> 361 Integral 362 atomic_fetch_add(volatile atomic<Integral>* obj, Integral op) noexcept; 363 364template <class Integral> 365 Integral 366 atomic_fetch_add(atomic<Integral>* obj, Integral op) noexcept; 367 368template <class Integral> 369 Integral 370 atomic_fetch_add_explicit(volatile atomic<Integral>* obj, Integral op, 371 memory_order m) noexcept; 372template <class Integral> 373 Integral 374 atomic_fetch_add_explicit(atomic<Integral>* obj, Integral op, 375 memory_order m) noexcept; 376template <class Integral> 377 Integral 378 atomic_fetch_sub(volatile atomic<Integral>* obj, Integral op) noexcept; 379 380template <class Integral> 381 Integral 382 atomic_fetch_sub(atomic<Integral>* obj, Integral op) noexcept; 383 384template <class Integral> 385 Integral 386 atomic_fetch_sub_explicit(volatile atomic<Integral>* obj, Integral op, 387 memory_order m) noexcept; 388template <class Integral> 389 Integral 390 atomic_fetch_sub_explicit(atomic<Integral>* obj, Integral op, 391 memory_order m) noexcept; 392template <class Integral> 393 Integral 394 atomic_fetch_and(volatile atomic<Integral>* obj, Integral op) noexcept; 395 396template <class Integral> 397 Integral 398 atomic_fetch_and(atomic<Integral>* obj, Integral op) noexcept; 399 400template <class Integral> 401 Integral 402 atomic_fetch_and_explicit(volatile atomic<Integral>* obj, Integral op, 403 memory_order m) noexcept; 404template <class Integral> 405 Integral 406 atomic_fetch_and_explicit(atomic<Integral>* obj, Integral op, 407 memory_order m) noexcept; 408template <class Integral> 409 Integral 410 atomic_fetch_or(volatile atomic<Integral>* obj, Integral op) noexcept; 411 412template <class Integral> 413 Integral 414 atomic_fetch_or(atomic<Integral>* obj, Integral op) noexcept; 415 416template <class Integral> 417 Integral 418 atomic_fetch_or_explicit(volatile atomic<Integral>* obj, Integral op, 419 memory_order m) noexcept; 420template <class Integral> 421 Integral 422 atomic_fetch_or_explicit(atomic<Integral>* obj, Integral op, 423 memory_order m) noexcept; 424template <class Integral> 425 Integral 426 atomic_fetch_xor(volatile atomic<Integral>* obj, Integral op) noexcept; 427 428template <class Integral> 429 Integral 430 atomic_fetch_xor(atomic<Integral>* obj, Integral op) noexcept; 431 432template <class Integral> 433 Integral 434 atomic_fetch_xor_explicit(volatile atomic<Integral>* obj, Integral op, 435 memory_order m) noexcept; 436template <class Integral> 437 Integral 438 atomic_fetch_xor_explicit(atomic<Integral>* obj, Integral op, 439 memory_order m) noexcept; 440 441template <class T> 442 T* 443 atomic_fetch_add(volatile atomic<T*>* obj, ptrdiff_t op) noexcept; 444 445template <class T> 446 T* 447 atomic_fetch_add(atomic<T*>* obj, ptrdiff_t op) noexcept; 448 449template <class T> 450 T* 451 atomic_fetch_add_explicit(volatile atomic<T*>* obj, ptrdiff_t op, 452 memory_order m) noexcept; 453template <class T> 454 T* 455 atomic_fetch_add_explicit(atomic<T*>* obj, ptrdiff_t op, memory_order m) noexcept; 456 457template <class T> 458 T* 459 atomic_fetch_sub(volatile atomic<T*>* obj, ptrdiff_t op) noexcept; 460 461template <class T> 462 T* 463 atomic_fetch_sub(atomic<T*>* obj, ptrdiff_t op) noexcept; 464 465template <class T> 466 T* 467 atomic_fetch_sub_explicit(volatile atomic<T*>* obj, ptrdiff_t op, 468 memory_order m) noexcept; 469template <class T> 470 T* 471 atomic_fetch_sub_explicit(atomic<T*>* obj, ptrdiff_t op, memory_order m) noexcept; 472 473// Atomics for standard typedef types 474 475typedef atomic<char> atomic_char; 476typedef atomic<signed char> atomic_schar; 477typedef atomic<unsigned char> atomic_uchar; 478typedef atomic<short> atomic_short; 479typedef atomic<unsigned short> atomic_ushort; 480typedef atomic<int> atomic_int; 481typedef atomic<unsigned int> atomic_uint; 482typedef atomic<long> atomic_long; 483typedef atomic<unsigned long> atomic_ulong; 484typedef atomic<long long> atomic_llong; 485typedef atomic<unsigned long long> atomic_ullong; 486typedef atomic<char16_t> atomic_char16_t; 487typedef atomic<char32_t> atomic_char32_t; 488typedef atomic<wchar_t> atomic_wchar_t; 489 490typedef atomic<int_least8_t> atomic_int_least8_t; 491typedef atomic<uint_least8_t> atomic_uint_least8_t; 492typedef atomic<int_least16_t> atomic_int_least16_t; 493typedef atomic<uint_least16_t> atomic_uint_least16_t; 494typedef atomic<int_least32_t> atomic_int_least32_t; 495typedef atomic<uint_least32_t> atomic_uint_least32_t; 496typedef atomic<int_least64_t> atomic_int_least64_t; 497typedef atomic<uint_least64_t> atomic_uint_least64_t; 498 499typedef atomic<int_fast8_t> atomic_int_fast8_t; 500typedef atomic<uint_fast8_t> atomic_uint_fast8_t; 501typedef atomic<int_fast16_t> atomic_int_fast16_t; 502typedef atomic<uint_fast16_t> atomic_uint_fast16_t; 503typedef atomic<int_fast32_t> atomic_int_fast32_t; 504typedef atomic<uint_fast32_t> atomic_uint_fast32_t; 505typedef atomic<int_fast64_t> atomic_int_fast64_t; 506typedef atomic<uint_fast64_t> atomic_uint_fast64_t; 507 508typedef atomic<intptr_t> atomic_intptr_t; 509typedef atomic<uintptr_t> atomic_uintptr_t; 510typedef atomic<size_t> atomic_size_t; 511typedef atomic<ptrdiff_t> atomic_ptrdiff_t; 512typedef atomic<intmax_t> atomic_intmax_t; 513typedef atomic<uintmax_t> atomic_uintmax_t; 514 515// fences 516 517void atomic_thread_fence(memory_order m) noexcept; 518void atomic_signal_fence(memory_order m) noexcept; 519 520} // std 521 522*/ 523 524#include <__config> 525#include <cstddef> 526#include <cstdint> 527#include <type_traits> 528 529#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 530#pragma GCC system_header 531#endif 532 533_LIBCPP_BEGIN_NAMESPACE_STD 534 535#if !__has_feature(cxx_atomic) 536#error <atomic> is not implemented 537#else 538 539typedef enum memory_order 540{ 541 memory_order_relaxed, memory_order_consume, memory_order_acquire, 542 memory_order_release, memory_order_acq_rel, memory_order_seq_cst 543} memory_order; 544 545template <class _Tp> 546inline _LIBCPP_INLINE_VISIBILITY 547_Tp 548kill_dependency(_Tp __y) _NOEXCEPT 549{ 550 return __y; 551} 552 553// general atomic<T> 554 555template <class _Tp, bool = is_integral<_Tp>::value && !is_same<_Tp, bool>::value> 556struct __atomic_base // false 557{ 558 _Atomic(_Tp) __a_; 559 560 _LIBCPP_INLINE_VISIBILITY 561 bool is_lock_free() const volatile _NOEXCEPT 562 {return __c11_atomic_is_lock_free(sizeof(_Tp));} 563 _LIBCPP_INLINE_VISIBILITY 564 bool is_lock_free() const _NOEXCEPT 565 {return __c11_atomic_is_lock_free(sizeof(_Tp));} 566 _LIBCPP_INLINE_VISIBILITY 567 void store(_Tp __d, memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT 568 {__c11_atomic_store(&__a_, __d, __m);} 569 _LIBCPP_INLINE_VISIBILITY 570 void store(_Tp __d, memory_order __m = memory_order_seq_cst) _NOEXCEPT 571 {__c11_atomic_store(&__a_, __d, __m);} 572 _LIBCPP_INLINE_VISIBILITY 573 _Tp load(memory_order __m = memory_order_seq_cst) const volatile _NOEXCEPT 574 {return __c11_atomic_load(&__a_, __m);} 575 _LIBCPP_INLINE_VISIBILITY 576 _Tp load(memory_order __m = memory_order_seq_cst) const _NOEXCEPT 577 {return __c11_atomic_load(&__a_, __m);} 578 _LIBCPP_INLINE_VISIBILITY 579 operator _Tp() const volatile _NOEXCEPT {return load();} 580 _LIBCPP_INLINE_VISIBILITY 581 operator _Tp() const _NOEXCEPT {return load();} 582 _LIBCPP_INLINE_VISIBILITY 583 _Tp exchange(_Tp __d, memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT 584 {return __c11_atomic_exchange(&__a_, __d, __m);} 585 _LIBCPP_INLINE_VISIBILITY 586 _Tp exchange(_Tp __d, memory_order __m = memory_order_seq_cst) _NOEXCEPT 587 {return __c11_atomic_exchange(&__a_, __d, __m);} 588 _LIBCPP_INLINE_VISIBILITY 589 bool compare_exchange_weak(_Tp& __e, _Tp __d, 590 memory_order __s, memory_order __f) volatile _NOEXCEPT 591 {return __c11_atomic_compare_exchange_weak(&__a_, &__e, __d, __s, __f);} 592 _LIBCPP_INLINE_VISIBILITY 593 bool compare_exchange_weak(_Tp& __e, _Tp __d, 594 memory_order __s, memory_order __f) _NOEXCEPT 595 {return __c11_atomic_compare_exchange_weak(&__a_, &__e, __d, __s, __f);} 596 _LIBCPP_INLINE_VISIBILITY 597 bool compare_exchange_strong(_Tp& __e, _Tp __d, 598 memory_order __s, memory_order __f) volatile _NOEXCEPT 599 {return __c11_atomic_compare_exchange_strong(&__a_, &__e, __d, __s, __f);} 600 _LIBCPP_INLINE_VISIBILITY 601 bool compare_exchange_strong(_Tp& __e, _Tp __d, 602 memory_order __s, memory_order __f) _NOEXCEPT 603 {return __c11_atomic_compare_exchange_strong(&__a_, &__e, __d, __s, __f);} 604 _LIBCPP_INLINE_VISIBILITY 605 bool compare_exchange_weak(_Tp& __e, _Tp __d, 606 memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT 607 {return __c11_atomic_compare_exchange_weak(&__a_, &__e, __d, __m, __m);} 608 _LIBCPP_INLINE_VISIBILITY 609 bool compare_exchange_weak(_Tp& __e, _Tp __d, 610 memory_order __m = memory_order_seq_cst) _NOEXCEPT 611 {return __c11_atomic_compare_exchange_weak(&__a_, &__e, __d, __m, __m);} 612 _LIBCPP_INLINE_VISIBILITY 613 bool compare_exchange_strong(_Tp& __e, _Tp __d, 614 memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT 615 {return __c11_atomic_compare_exchange_strong(&__a_, &__e, __d, __m, __m);} 616 _LIBCPP_INLINE_VISIBILITY 617 bool compare_exchange_strong(_Tp& __e, _Tp __d, 618 memory_order __m = memory_order_seq_cst) _NOEXCEPT 619 {return __c11_atomic_compare_exchange_strong(&__a_, &__e, __d, __m, __m);} 620 621 _LIBCPP_INLINE_VISIBILITY 622 __atomic_base() _NOEXCEPT {} // = default; 623 _LIBCPP_INLINE_VISIBILITY 624 _LIBCPP_CONSTEXPR __atomic_base(_Tp __d) _NOEXCEPT : __a_(__d) {} 625#ifndef _LIBCPP_HAS_NO_DELETED_FUNCTIONS 626 __atomic_base(const __atomic_base&) = delete; 627 __atomic_base& operator=(const __atomic_base&) = delete; 628 __atomic_base& operator=(const __atomic_base&) volatile = delete; 629#else // _LIBCPP_HAS_NO_DELETED_FUNCTIONS 630private: 631 __atomic_base(const __atomic_base&); 632 __atomic_base& operator=(const __atomic_base&); 633 __atomic_base& operator=(const __atomic_base&) volatile; 634#endif // _LIBCPP_HAS_NO_DELETED_FUNCTIONS 635}; 636 637// atomic<Integral> 638 639template <class _Tp> 640struct __atomic_base<_Tp, true> 641 : public __atomic_base<_Tp, false> 642{ 643 typedef __atomic_base<_Tp, false> __base; 644 _LIBCPP_INLINE_VISIBILITY 645 __atomic_base() _NOEXCEPT {} // = default; 646 _LIBCPP_INLINE_VISIBILITY 647 _LIBCPP_CONSTEXPR __atomic_base(_Tp __d) _NOEXCEPT : __base(__d) {} 648 649 _LIBCPP_INLINE_VISIBILITY 650 _Tp fetch_add(_Tp __op, memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT 651 {return __c11_atomic_fetch_add(&this->__a_, __op, __m);} 652 _LIBCPP_INLINE_VISIBILITY 653 _Tp fetch_add(_Tp __op, memory_order __m = memory_order_seq_cst) _NOEXCEPT 654 {return __c11_atomic_fetch_add(&this->__a_, __op, __m);} 655 _LIBCPP_INLINE_VISIBILITY 656 _Tp fetch_sub(_Tp __op, memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT 657 {return __c11_atomic_fetch_sub(&this->__a_, __op, __m);} 658 _LIBCPP_INLINE_VISIBILITY 659 _Tp fetch_sub(_Tp __op, memory_order __m = memory_order_seq_cst) _NOEXCEPT 660 {return __c11_atomic_fetch_sub(&this->__a_, __op, __m);} 661 _LIBCPP_INLINE_VISIBILITY 662 _Tp fetch_and(_Tp __op, memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT 663 {return __c11_atomic_fetch_and(&this->__a_, __op, __m);} 664 _LIBCPP_INLINE_VISIBILITY 665 _Tp fetch_and(_Tp __op, memory_order __m = memory_order_seq_cst) _NOEXCEPT 666 {return __c11_atomic_fetch_and(&this->__a_, __op, __m);} 667 _LIBCPP_INLINE_VISIBILITY 668 _Tp fetch_or(_Tp __op, memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT 669 {return __c11_atomic_fetch_or(&this->__a_, __op, __m);} 670 _LIBCPP_INLINE_VISIBILITY 671 _Tp fetch_or(_Tp __op, memory_order __m = memory_order_seq_cst) _NOEXCEPT 672 {return __c11_atomic_fetch_or(&this->__a_, __op, __m);} 673 _LIBCPP_INLINE_VISIBILITY 674 _Tp fetch_xor(_Tp __op, memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT 675 {return __c11_atomic_fetch_xor(&this->__a_, __op, __m);} 676 _LIBCPP_INLINE_VISIBILITY 677 _Tp fetch_xor(_Tp __op, memory_order __m = memory_order_seq_cst) _NOEXCEPT 678 {return __c11_atomic_fetch_xor(&this->__a_, __op, __m);} 679 680 _LIBCPP_INLINE_VISIBILITY 681 _Tp operator++(int) volatile _NOEXCEPT {return fetch_add(_Tp(1));} 682 _LIBCPP_INLINE_VISIBILITY 683 _Tp operator++(int) _NOEXCEPT {return fetch_add(_Tp(1));} 684 _LIBCPP_INLINE_VISIBILITY 685 _Tp operator--(int) volatile _NOEXCEPT {return fetch_sub(_Tp(1));} 686 _LIBCPP_INLINE_VISIBILITY 687 _Tp operator--(int) _NOEXCEPT {return fetch_sub(_Tp(1));} 688 _LIBCPP_INLINE_VISIBILITY 689 _Tp operator++() volatile _NOEXCEPT {return fetch_add(_Tp(1)) + _Tp(1);} 690 _LIBCPP_INLINE_VISIBILITY 691 _Tp operator++() _NOEXCEPT {return fetch_add(_Tp(1)) + _Tp(1);} 692 _LIBCPP_INLINE_VISIBILITY 693 _Tp operator--() volatile _NOEXCEPT {return fetch_sub(_Tp(1)) - _Tp(1);} 694 _LIBCPP_INLINE_VISIBILITY 695 _Tp operator--() _NOEXCEPT {return fetch_sub(_Tp(1)) - _Tp(1);} 696 _LIBCPP_INLINE_VISIBILITY 697 _Tp operator+=(_Tp __op) volatile _NOEXCEPT {return fetch_add(__op) + __op;} 698 _LIBCPP_INLINE_VISIBILITY 699 _Tp operator+=(_Tp __op) _NOEXCEPT {return fetch_add(__op) + __op;} 700 _LIBCPP_INLINE_VISIBILITY 701 _Tp operator-=(_Tp __op) volatile _NOEXCEPT {return fetch_sub(__op) - __op;} 702 _LIBCPP_INLINE_VISIBILITY 703 _Tp operator-=(_Tp __op) _NOEXCEPT {return fetch_sub(__op) - __op;} 704 _LIBCPP_INLINE_VISIBILITY 705 _Tp operator&=(_Tp __op) volatile _NOEXCEPT {return fetch_and(__op) & __op;} 706 _LIBCPP_INLINE_VISIBILITY 707 _Tp operator&=(_Tp __op) _NOEXCEPT {return fetch_and(__op) & __op;} 708 _LIBCPP_INLINE_VISIBILITY 709 _Tp operator|=(_Tp __op) volatile _NOEXCEPT {return fetch_or(__op) | __op;} 710 _LIBCPP_INLINE_VISIBILITY 711 _Tp operator|=(_Tp __op) _NOEXCEPT {return fetch_or(__op) | __op;} 712 _LIBCPP_INLINE_VISIBILITY 713 _Tp operator^=(_Tp __op) volatile _NOEXCEPT {return fetch_xor(__op) ^ __op;} 714 _LIBCPP_INLINE_VISIBILITY 715 _Tp operator^=(_Tp __op) _NOEXCEPT {return fetch_xor(__op) ^ __op;} 716}; 717 718// atomic<T> 719 720template <class _Tp> 721struct atomic 722 : public __atomic_base<_Tp> 723{ 724 typedef __atomic_base<_Tp> __base; 725 _LIBCPP_INLINE_VISIBILITY 726 atomic() _NOEXCEPT {} // = default; 727 _LIBCPP_INLINE_VISIBILITY 728 _LIBCPP_CONSTEXPR atomic(_Tp __d) _NOEXCEPT : __base(__d) {} 729 730 _LIBCPP_INLINE_VISIBILITY 731 _Tp operator=(_Tp __d) volatile _NOEXCEPT 732 {__base::store(__d); return __d;} 733 _LIBCPP_INLINE_VISIBILITY 734 _Tp operator=(_Tp __d) _NOEXCEPT 735 {__base::store(__d); return __d;} 736}; 737 738// atomic<T*> 739 740template <class _Tp> 741struct atomic<_Tp*> 742 : public __atomic_base<_Tp*> 743{ 744 typedef __atomic_base<_Tp*> __base; 745 _LIBCPP_INLINE_VISIBILITY 746 atomic() _NOEXCEPT {} // = default; 747 _LIBCPP_INLINE_VISIBILITY 748 _LIBCPP_CONSTEXPR atomic(_Tp* __d) _NOEXCEPT : __base(__d) {} 749 750 _LIBCPP_INLINE_VISIBILITY 751 _Tp* operator=(_Tp* __d) volatile _NOEXCEPT 752 {__base::store(__d); return __d;} 753 _LIBCPP_INLINE_VISIBILITY 754 _Tp* operator=(_Tp* __d) _NOEXCEPT 755 {__base::store(__d); return __d;} 756 757 _LIBCPP_INLINE_VISIBILITY 758 _Tp* fetch_add(ptrdiff_t __op, memory_order __m = memory_order_seq_cst) 759 volatile _NOEXCEPT 760 {return __c11_atomic_fetch_add(&this->__a_, __op, __m);} 761 _LIBCPP_INLINE_VISIBILITY 762 _Tp* fetch_add(ptrdiff_t __op, memory_order __m = memory_order_seq_cst) _NOEXCEPT 763 {return __c11_atomic_fetch_add(&this->__a_, __op, __m);} 764 _LIBCPP_INLINE_VISIBILITY 765 _Tp* fetch_sub(ptrdiff_t __op, memory_order __m = memory_order_seq_cst) 766 volatile _NOEXCEPT 767 {return __c11_atomic_fetch_sub(&this->__a_, __op, __m);} 768 _LIBCPP_INLINE_VISIBILITY 769 _Tp* fetch_sub(ptrdiff_t __op, memory_order __m = memory_order_seq_cst) _NOEXCEPT 770 {return __c11_atomic_fetch_sub(&this->__a_, __op, __m);} 771 772 _LIBCPP_INLINE_VISIBILITY 773 _Tp* operator++(int) volatile _NOEXCEPT {return fetch_add(1);} 774 _LIBCPP_INLINE_VISIBILITY 775 _Tp* operator++(int) _NOEXCEPT {return fetch_add(1);} 776 _LIBCPP_INLINE_VISIBILITY 777 _Tp* operator--(int) volatile _NOEXCEPT {return fetch_sub(1);} 778 _LIBCPP_INLINE_VISIBILITY 779 _Tp* operator--(int) _NOEXCEPT {return fetch_sub(1);} 780 _LIBCPP_INLINE_VISIBILITY 781 _Tp* operator++() volatile _NOEXCEPT {return fetch_add(1) + 1;} 782 _LIBCPP_INLINE_VISIBILITY 783 _Tp* operator++() _NOEXCEPT {return fetch_add(1) + 1;} 784 _LIBCPP_INLINE_VISIBILITY 785 _Tp* operator--() volatile _NOEXCEPT {return fetch_sub(1) - 1;} 786 _LIBCPP_INLINE_VISIBILITY 787 _Tp* operator--() _NOEXCEPT {return fetch_sub(1) - 1;} 788 _LIBCPP_INLINE_VISIBILITY 789 _Tp* operator+=(ptrdiff_t __op) volatile _NOEXCEPT {return fetch_add(__op) + __op;} 790 _LIBCPP_INLINE_VISIBILITY 791 _Tp* operator+=(ptrdiff_t __op) _NOEXCEPT {return fetch_add(__op) + __op;} 792 _LIBCPP_INLINE_VISIBILITY 793 _Tp* operator-=(ptrdiff_t __op) volatile _NOEXCEPT {return fetch_sub(__op) - __op;} 794 _LIBCPP_INLINE_VISIBILITY 795 _Tp* operator-=(ptrdiff_t __op) _NOEXCEPT {return fetch_sub(__op) - __op;} 796}; 797 798// atomic_is_lock_free 799 800template <class _Tp> 801inline _LIBCPP_INLINE_VISIBILITY 802bool 803atomic_is_lock_free(const volatile atomic<_Tp>* __o) _NOEXCEPT 804{ 805 return __o->is_lock_free(); 806} 807 808template <class _Tp> 809inline _LIBCPP_INLINE_VISIBILITY 810bool 811atomic_is_lock_free(const atomic<_Tp>* __o) _NOEXCEPT 812{ 813 return __o->is_lock_free(); 814} 815 816// atomic_init 817 818template <class _Tp> 819inline _LIBCPP_INLINE_VISIBILITY 820void 821atomic_init(volatile atomic<_Tp>* __o, _Tp __d) _NOEXCEPT 822{ 823 __c11_atomic_init(&__o->__a_, __d); 824} 825 826template <class _Tp> 827inline _LIBCPP_INLINE_VISIBILITY 828void 829atomic_init(atomic<_Tp>* __o, _Tp __d) _NOEXCEPT 830{ 831 __c11_atomic_init(&__o->__a_, __d); 832} 833 834// atomic_store 835 836template <class _Tp> 837inline _LIBCPP_INLINE_VISIBILITY 838void 839atomic_store(volatile atomic<_Tp>* __o, _Tp __d) _NOEXCEPT 840{ 841 __o->store(__d); 842} 843 844template <class _Tp> 845inline _LIBCPP_INLINE_VISIBILITY 846void 847atomic_store(atomic<_Tp>* __o, _Tp __d) _NOEXCEPT 848{ 849 __o->store(__d); 850} 851 852// atomic_store_explicit 853 854template <class _Tp> 855inline _LIBCPP_INLINE_VISIBILITY 856void 857atomic_store_explicit(volatile atomic<_Tp>* __o, _Tp __d, memory_order __m) _NOEXCEPT 858{ 859 __o->store(__d, __m); 860} 861 862template <class _Tp> 863inline _LIBCPP_INLINE_VISIBILITY 864void 865atomic_store_explicit(atomic<_Tp>* __o, _Tp __d, memory_order __m) _NOEXCEPT 866{ 867 __o->store(__d, __m); 868} 869 870// atomic_load 871 872template <class _Tp> 873inline _LIBCPP_INLINE_VISIBILITY 874_Tp 875atomic_load(const volatile atomic<_Tp>* __o) _NOEXCEPT 876{ 877 return __o->load(); 878} 879 880template <class _Tp> 881inline _LIBCPP_INLINE_VISIBILITY 882_Tp 883atomic_load(const atomic<_Tp>* __o) _NOEXCEPT 884{ 885 return __o->load(); 886} 887 888// atomic_load_explicit 889 890template <class _Tp> 891inline _LIBCPP_INLINE_VISIBILITY 892_Tp 893atomic_load_explicit(const volatile atomic<_Tp>* __o, memory_order __m) _NOEXCEPT 894{ 895 return __o->load(__m); 896} 897 898template <class _Tp> 899inline _LIBCPP_INLINE_VISIBILITY 900_Tp 901atomic_load_explicit(const atomic<_Tp>* __o, memory_order __m) _NOEXCEPT 902{ 903 return __o->load(__m); 904} 905 906// atomic_exchange 907 908template <class _Tp> 909inline _LIBCPP_INLINE_VISIBILITY 910_Tp 911atomic_exchange(volatile atomic<_Tp>* __o, _Tp __d) _NOEXCEPT 912{ 913 return __o->exchange(__d); 914} 915 916template <class _Tp> 917inline _LIBCPP_INLINE_VISIBILITY 918_Tp 919atomic_exchange(atomic<_Tp>* __o, _Tp __d) _NOEXCEPT 920{ 921 return __o->exchange(__d); 922} 923 924// atomic_exchange_explicit 925 926template <class _Tp> 927inline _LIBCPP_INLINE_VISIBILITY 928_Tp 929atomic_exchange_explicit(volatile atomic<_Tp>* __o, _Tp __d, memory_order __m) _NOEXCEPT 930{ 931 return __o->exchange(__d, __m); 932} 933 934template <class _Tp> 935inline _LIBCPP_INLINE_VISIBILITY 936_Tp 937atomic_exchange_explicit(atomic<_Tp>* __o, _Tp __d, memory_order __m) _NOEXCEPT 938{ 939 return __o->exchange(__d, __m); 940} 941 942// atomic_compare_exchange_weak 943 944template <class _Tp> 945inline _LIBCPP_INLINE_VISIBILITY 946bool 947atomic_compare_exchange_weak(volatile atomic<_Tp>* __o, _Tp* __e, _Tp __d) _NOEXCEPT 948{ 949 return __o->compare_exchange_weak(*__e, __d); 950} 951 952template <class _Tp> 953inline _LIBCPP_INLINE_VISIBILITY 954bool 955atomic_compare_exchange_weak(atomic<_Tp>* __o, _Tp* __e, _Tp __d) _NOEXCEPT 956{ 957 return __o->compare_exchange_weak(*__e, __d); 958} 959 960// atomic_compare_exchange_strong 961 962template <class _Tp> 963inline _LIBCPP_INLINE_VISIBILITY 964bool 965atomic_compare_exchange_strong(volatile atomic<_Tp>* __o, _Tp* __e, _Tp __d) _NOEXCEPT 966{ 967 return __o->compare_exchange_strong(*__e, __d); 968} 969 970template <class _Tp> 971inline _LIBCPP_INLINE_VISIBILITY 972bool 973atomic_compare_exchange_strong(atomic<_Tp>* __o, _Tp* __e, _Tp __d) _NOEXCEPT 974{ 975 return __o->compare_exchange_strong(*__e, __d); 976} 977 978// atomic_compare_exchange_weak_explicit 979 980template <class _Tp> 981inline _LIBCPP_INLINE_VISIBILITY 982bool 983atomic_compare_exchange_weak_explicit(volatile atomic<_Tp>* __o, _Tp* __e, 984 _Tp __d, 985 memory_order __s, memory_order __f) _NOEXCEPT 986{ 987 return __o->compare_exchange_weak(*__e, __d, __s, __f); 988} 989 990template <class _Tp> 991inline _LIBCPP_INLINE_VISIBILITY 992bool 993atomic_compare_exchange_weak_explicit(atomic<_Tp>* __o, _Tp* __e, _Tp __d, 994 memory_order __s, memory_order __f) _NOEXCEPT 995{ 996 return __o->compare_exchange_weak(*__e, __d, __s, __f); 997} 998 999// atomic_compare_exchange_strong_explicit 1000 1001template <class _Tp> 1002inline _LIBCPP_INLINE_VISIBILITY 1003bool 1004atomic_compare_exchange_strong_explicit(volatile atomic<_Tp>* __o, 1005 _Tp* __e, _Tp __d, 1006 memory_order __s, memory_order __f) _NOEXCEPT 1007{ 1008 return __o->compare_exchange_strong(*__e, __d, __s, __f); 1009} 1010 1011template <class _Tp> 1012inline _LIBCPP_INLINE_VISIBILITY 1013bool 1014atomic_compare_exchange_strong_explicit(atomic<_Tp>* __o, _Tp* __e, 1015 _Tp __d, 1016 memory_order __s, memory_order __f) _NOEXCEPT 1017{ 1018 return __o->compare_exchange_strong(*__e, __d, __s, __f); 1019} 1020 1021// atomic_fetch_add 1022 1023template <class _Tp> 1024inline _LIBCPP_INLINE_VISIBILITY 1025typename enable_if 1026< 1027 is_integral<_Tp>::value && !is_same<_Tp, bool>::value, 1028 _Tp 1029>::type 1030atomic_fetch_add(volatile atomic<_Tp>* __o, _Tp __op) _NOEXCEPT 1031{ 1032 return __o->fetch_add(__op); 1033} 1034 1035template <class _Tp> 1036inline _LIBCPP_INLINE_VISIBILITY 1037typename enable_if 1038< 1039 is_integral<_Tp>::value && !is_same<_Tp, bool>::value, 1040 _Tp 1041>::type 1042atomic_fetch_add(atomic<_Tp>* __o, _Tp __op) _NOEXCEPT 1043{ 1044 return __o->fetch_add(__op); 1045} 1046 1047template <class _Tp> 1048inline _LIBCPP_INLINE_VISIBILITY 1049_Tp* 1050atomic_fetch_add(volatile atomic<_Tp*>* __o, ptrdiff_t __op) _NOEXCEPT 1051{ 1052 return __o->fetch_add(__op); 1053} 1054 1055template <class _Tp> 1056inline _LIBCPP_INLINE_VISIBILITY 1057_Tp* 1058atomic_fetch_add(atomic<_Tp*>* __o, ptrdiff_t __op) _NOEXCEPT 1059{ 1060 return __o->fetch_add(__op); 1061} 1062 1063// atomic_fetch_add_explicit 1064 1065template <class _Tp> 1066inline _LIBCPP_INLINE_VISIBILITY 1067typename enable_if 1068< 1069 is_integral<_Tp>::value && !is_same<_Tp, bool>::value, 1070 _Tp 1071>::type 1072atomic_fetch_add_explicit(volatile atomic<_Tp>* __o, _Tp __op, memory_order __m) _NOEXCEPT 1073{ 1074 return __o->fetch_add(__op, __m); 1075} 1076 1077template <class _Tp> 1078inline _LIBCPP_INLINE_VISIBILITY 1079typename enable_if 1080< 1081 is_integral<_Tp>::value && !is_same<_Tp, bool>::value, 1082 _Tp 1083>::type 1084atomic_fetch_add_explicit(atomic<_Tp>* __o, _Tp __op, memory_order __m) _NOEXCEPT 1085{ 1086 return __o->fetch_add(__op, __m); 1087} 1088 1089template <class _Tp> 1090inline _LIBCPP_INLINE_VISIBILITY 1091_Tp* 1092atomic_fetch_add_explicit(volatile atomic<_Tp*>* __o, ptrdiff_t __op, 1093 memory_order __m) _NOEXCEPT 1094{ 1095 return __o->fetch_add(__op, __m); 1096} 1097 1098template <class _Tp> 1099inline _LIBCPP_INLINE_VISIBILITY 1100_Tp* 1101atomic_fetch_add_explicit(atomic<_Tp*>* __o, ptrdiff_t __op, memory_order __m) _NOEXCEPT 1102{ 1103 return __o->fetch_add(__op, __m); 1104} 1105 1106// atomic_fetch_sub 1107 1108template <class _Tp> 1109inline _LIBCPP_INLINE_VISIBILITY 1110typename enable_if 1111< 1112 is_integral<_Tp>::value && !is_same<_Tp, bool>::value, 1113 _Tp 1114>::type 1115atomic_fetch_sub(volatile atomic<_Tp>* __o, _Tp __op) _NOEXCEPT 1116{ 1117 return __o->fetch_sub(__op); 1118} 1119 1120template <class _Tp> 1121inline _LIBCPP_INLINE_VISIBILITY 1122typename enable_if 1123< 1124 is_integral<_Tp>::value && !is_same<_Tp, bool>::value, 1125 _Tp 1126>::type 1127atomic_fetch_sub(atomic<_Tp>* __o, _Tp __op) _NOEXCEPT 1128{ 1129 return __o->fetch_sub(__op); 1130} 1131 1132template <class _Tp> 1133inline _LIBCPP_INLINE_VISIBILITY 1134_Tp* 1135atomic_fetch_sub(volatile atomic<_Tp*>* __o, ptrdiff_t __op) _NOEXCEPT 1136{ 1137 return __o->fetch_sub(__op); 1138} 1139 1140template <class _Tp> 1141inline _LIBCPP_INLINE_VISIBILITY 1142_Tp* 1143atomic_fetch_sub(atomic<_Tp*>* __o, ptrdiff_t __op) _NOEXCEPT 1144{ 1145 return __o->fetch_sub(__op); 1146} 1147 1148// atomic_fetch_sub_explicit 1149 1150template <class _Tp> 1151inline _LIBCPP_INLINE_VISIBILITY 1152typename enable_if 1153< 1154 is_integral<_Tp>::value && !is_same<_Tp, bool>::value, 1155 _Tp 1156>::type 1157atomic_fetch_sub_explicit(volatile atomic<_Tp>* __o, _Tp __op, memory_order __m) _NOEXCEPT 1158{ 1159 return __o->fetch_sub(__op, __m); 1160} 1161 1162template <class _Tp> 1163inline _LIBCPP_INLINE_VISIBILITY 1164typename enable_if 1165< 1166 is_integral<_Tp>::value && !is_same<_Tp, bool>::value, 1167 _Tp 1168>::type 1169atomic_fetch_sub_explicit(atomic<_Tp>* __o, _Tp __op, memory_order __m) _NOEXCEPT 1170{ 1171 return __o->fetch_sub(__op, __m); 1172} 1173 1174template <class _Tp> 1175inline _LIBCPP_INLINE_VISIBILITY 1176_Tp* 1177atomic_fetch_sub_explicit(volatile atomic<_Tp*>* __o, ptrdiff_t __op, 1178 memory_order __m) _NOEXCEPT 1179{ 1180 return __o->fetch_sub(__op, __m); 1181} 1182 1183template <class _Tp> 1184inline _LIBCPP_INLINE_VISIBILITY 1185_Tp* 1186atomic_fetch_sub_explicit(atomic<_Tp*>* __o, ptrdiff_t __op, memory_order __m) _NOEXCEPT 1187{ 1188 return __o->fetch_sub(__op, __m); 1189} 1190 1191// atomic_fetch_and 1192 1193template <class _Tp> 1194inline _LIBCPP_INLINE_VISIBILITY 1195typename enable_if 1196< 1197 is_integral<_Tp>::value && !is_same<_Tp, bool>::value, 1198 _Tp 1199>::type 1200atomic_fetch_and(volatile atomic<_Tp>* __o, _Tp __op) _NOEXCEPT 1201{ 1202 return __o->fetch_and(__op); 1203} 1204 1205template <class _Tp> 1206inline _LIBCPP_INLINE_VISIBILITY 1207typename enable_if 1208< 1209 is_integral<_Tp>::value && !is_same<_Tp, bool>::value, 1210 _Tp 1211>::type 1212atomic_fetch_and(atomic<_Tp>* __o, _Tp __op) _NOEXCEPT 1213{ 1214 return __o->fetch_and(__op); 1215} 1216 1217// atomic_fetch_and_explicit 1218 1219template <class _Tp> 1220inline _LIBCPP_INLINE_VISIBILITY 1221typename enable_if 1222< 1223 is_integral<_Tp>::value && !is_same<_Tp, bool>::value, 1224 _Tp 1225>::type 1226atomic_fetch_and_explicit(volatile atomic<_Tp>* __o, _Tp __op, memory_order __m) _NOEXCEPT 1227{ 1228 return __o->fetch_and(__op, __m); 1229} 1230 1231template <class _Tp> 1232inline _LIBCPP_INLINE_VISIBILITY 1233typename enable_if 1234< 1235 is_integral<_Tp>::value && !is_same<_Tp, bool>::value, 1236 _Tp 1237>::type 1238atomic_fetch_and_explicit(atomic<_Tp>* __o, _Tp __op, memory_order __m) _NOEXCEPT 1239{ 1240 return __o->fetch_and(__op, __m); 1241} 1242 1243// atomic_fetch_or 1244 1245template <class _Tp> 1246inline _LIBCPP_INLINE_VISIBILITY 1247typename enable_if 1248< 1249 is_integral<_Tp>::value && !is_same<_Tp, bool>::value, 1250 _Tp 1251>::type 1252atomic_fetch_or(volatile atomic<_Tp>* __o, _Tp __op) _NOEXCEPT 1253{ 1254 return __o->fetch_or(__op); 1255} 1256 1257template <class _Tp> 1258inline _LIBCPP_INLINE_VISIBILITY 1259typename enable_if 1260< 1261 is_integral<_Tp>::value && !is_same<_Tp, bool>::value, 1262 _Tp 1263>::type 1264atomic_fetch_or(atomic<_Tp>* __o, _Tp __op) _NOEXCEPT 1265{ 1266 return __o->fetch_or(__op); 1267} 1268 1269// atomic_fetch_or_explicit 1270 1271template <class _Tp> 1272inline _LIBCPP_INLINE_VISIBILITY 1273typename enable_if 1274< 1275 is_integral<_Tp>::value && !is_same<_Tp, bool>::value, 1276 _Tp 1277>::type 1278atomic_fetch_or_explicit(volatile atomic<_Tp>* __o, _Tp __op, memory_order __m) _NOEXCEPT 1279{ 1280 return __o->fetch_or(__op, __m); 1281} 1282 1283template <class _Tp> 1284inline _LIBCPP_INLINE_VISIBILITY 1285typename enable_if 1286< 1287 is_integral<_Tp>::value && !is_same<_Tp, bool>::value, 1288 _Tp 1289>::type 1290atomic_fetch_or_explicit(atomic<_Tp>* __o, _Tp __op, memory_order __m) _NOEXCEPT 1291{ 1292 return __o->fetch_or(__op, __m); 1293} 1294 1295// atomic_fetch_xor 1296 1297template <class _Tp> 1298inline _LIBCPP_INLINE_VISIBILITY 1299typename enable_if 1300< 1301 is_integral<_Tp>::value && !is_same<_Tp, bool>::value, 1302 _Tp 1303>::type 1304atomic_fetch_xor(volatile atomic<_Tp>* __o, _Tp __op) _NOEXCEPT 1305{ 1306 return __o->fetch_xor(__op); 1307} 1308 1309template <class _Tp> 1310inline _LIBCPP_INLINE_VISIBILITY 1311typename enable_if 1312< 1313 is_integral<_Tp>::value && !is_same<_Tp, bool>::value, 1314 _Tp 1315>::type 1316atomic_fetch_xor(atomic<_Tp>* __o, _Tp __op) _NOEXCEPT 1317{ 1318 return __o->fetch_xor(__op); 1319} 1320 1321// atomic_fetch_xor_explicit 1322 1323template <class _Tp> 1324inline _LIBCPP_INLINE_VISIBILITY 1325typename enable_if 1326< 1327 is_integral<_Tp>::value && !is_same<_Tp, bool>::value, 1328 _Tp 1329>::type 1330atomic_fetch_xor_explicit(volatile atomic<_Tp>* __o, _Tp __op, memory_order __m) _NOEXCEPT 1331{ 1332 return __o->fetch_xor(__op, __m); 1333} 1334 1335template <class _Tp> 1336inline _LIBCPP_INLINE_VISIBILITY 1337typename enable_if 1338< 1339 is_integral<_Tp>::value && !is_same<_Tp, bool>::value, 1340 _Tp 1341>::type 1342atomic_fetch_xor_explicit(atomic<_Tp>* __o, _Tp __op, memory_order __m) _NOEXCEPT 1343{ 1344 return __o->fetch_xor(__op, __m); 1345} 1346 1347// flag type and operations 1348 1349typedef struct atomic_flag 1350{ 1351 _Atomic(bool) __a_; 1352 1353 _LIBCPP_INLINE_VISIBILITY 1354 bool test_and_set(memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT 1355 {return __c11_atomic_exchange(&__a_, true, __m);} 1356 _LIBCPP_INLINE_VISIBILITY 1357 bool test_and_set(memory_order __m = memory_order_seq_cst) _NOEXCEPT 1358 {return __c11_atomic_exchange(&__a_, true, __m);} 1359 _LIBCPP_INLINE_VISIBILITY 1360 void clear(memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT 1361 {__c11_atomic_store(&__a_, false, __m);} 1362 _LIBCPP_INLINE_VISIBILITY 1363 void clear(memory_order __m = memory_order_seq_cst) _NOEXCEPT 1364 {__c11_atomic_store(&__a_, false, __m);} 1365 1366 _LIBCPP_INLINE_VISIBILITY 1367 atomic_flag() _NOEXCEPT {} // = default; 1368 _LIBCPP_INLINE_VISIBILITY 1369 atomic_flag(bool __b) _NOEXCEPT : __a_(__b) {} 1370 1371#ifndef _LIBCPP_HAS_NO_DELETED_FUNCTIONS 1372 atomic_flag(const atomic_flag&) = delete; 1373 atomic_flag& operator=(const atomic_flag&) = delete; 1374 atomic_flag& operator=(const atomic_flag&) volatile = delete; 1375#else // _LIBCPP_HAS_NO_DELETED_FUNCTIONS 1376private: 1377 atomic_flag(const atomic_flag&); 1378 atomic_flag& operator=(const atomic_flag&); 1379 atomic_flag& operator=(const atomic_flag&) volatile; 1380#endif // _LIBCPP_HAS_NO_DELETED_FUNCTIONS 1381} atomic_flag; 1382 1383inline _LIBCPP_INLINE_VISIBILITY 1384bool 1385atomic_flag_test_and_set(volatile atomic_flag* __o) _NOEXCEPT 1386{ 1387 return __o->test_and_set(); 1388} 1389 1390inline _LIBCPP_INLINE_VISIBILITY 1391bool 1392atomic_flag_test_and_set(atomic_flag* __o) _NOEXCEPT 1393{ 1394 return __o->test_and_set(); 1395} 1396 1397inline _LIBCPP_INLINE_VISIBILITY 1398bool 1399atomic_flag_test_and_set_explicit(volatile atomic_flag* __o, memory_order __m) _NOEXCEPT 1400{ 1401 return __o->test_and_set(__m); 1402} 1403 1404inline _LIBCPP_INLINE_VISIBILITY 1405bool 1406atomic_flag_test_and_set_explicit(atomic_flag* __o, memory_order __m) _NOEXCEPT 1407{ 1408 return __o->test_and_set(__m); 1409} 1410 1411inline _LIBCPP_INLINE_VISIBILITY 1412void 1413atomic_flag_clear(volatile atomic_flag* __o) _NOEXCEPT 1414{ 1415 __o->clear(); 1416} 1417 1418inline _LIBCPP_INLINE_VISIBILITY 1419void 1420atomic_flag_clear(atomic_flag* __o) _NOEXCEPT 1421{ 1422 __o->clear(); 1423} 1424 1425inline _LIBCPP_INLINE_VISIBILITY 1426void 1427atomic_flag_clear_explicit(volatile atomic_flag* __o, memory_order __m) _NOEXCEPT 1428{ 1429 __o->clear(__m); 1430} 1431 1432inline _LIBCPP_INLINE_VISIBILITY 1433void 1434atomic_flag_clear_explicit(atomic_flag* __o, memory_order __m) _NOEXCEPT 1435{ 1436 __o->clear(__m); 1437} 1438 1439// fences 1440 1441inline _LIBCPP_INLINE_VISIBILITY 1442void 1443atomic_thread_fence(memory_order __m) _NOEXCEPT 1444{ 1445 __c11_atomic_thread_fence(__m); 1446} 1447 1448inline _LIBCPP_INLINE_VISIBILITY 1449void 1450atomic_signal_fence(memory_order __m) _NOEXCEPT 1451{ 1452 __c11_atomic_signal_fence(__m); 1453} 1454 1455// Atomics for standard typedef types 1456 1457typedef atomic<char> atomic_char; 1458typedef atomic<signed char> atomic_schar; 1459typedef atomic<unsigned char> atomic_uchar; 1460typedef atomic<short> atomic_short; 1461typedef atomic<unsigned short> atomic_ushort; 1462typedef atomic<int> atomic_int; 1463typedef atomic<unsigned int> atomic_uint; 1464typedef atomic<long> atomic_long; 1465typedef atomic<unsigned long> atomic_ulong; 1466typedef atomic<long long> atomic_llong; 1467typedef atomic<unsigned long long> atomic_ullong; 1468typedef atomic<char16_t> atomic_char16_t; 1469typedef atomic<char32_t> atomic_char32_t; 1470typedef atomic<wchar_t> atomic_wchar_t; 1471 1472typedef atomic<int_least8_t> atomic_int_least8_t; 1473typedef atomic<uint_least8_t> atomic_uint_least8_t; 1474typedef atomic<int_least16_t> atomic_int_least16_t; 1475typedef atomic<uint_least16_t> atomic_uint_least16_t; 1476typedef atomic<int_least32_t> atomic_int_least32_t; 1477typedef atomic<uint_least32_t> atomic_uint_least32_t; 1478typedef atomic<int_least64_t> atomic_int_least64_t; 1479typedef atomic<uint_least64_t> atomic_uint_least64_t; 1480 1481typedef atomic<int_fast8_t> atomic_int_fast8_t; 1482typedef atomic<uint_fast8_t> atomic_uint_fast8_t; 1483typedef atomic<int_fast16_t> atomic_int_fast16_t; 1484typedef atomic<uint_fast16_t> atomic_uint_fast16_t; 1485typedef atomic<int_fast32_t> atomic_int_fast32_t; 1486typedef atomic<uint_fast32_t> atomic_uint_fast32_t; 1487typedef atomic<int_fast64_t> atomic_int_fast64_t; 1488typedef atomic<uint_fast64_t> atomic_uint_fast64_t; 1489 1490typedef atomic<intptr_t> atomic_intptr_t; 1491typedef atomic<uintptr_t> atomic_uintptr_t; 1492typedef atomic<size_t> atomic_size_t; 1493typedef atomic<ptrdiff_t> atomic_ptrdiff_t; 1494typedef atomic<intmax_t> atomic_intmax_t; 1495typedef atomic<uintmax_t> atomic_uintmax_t; 1496 1497#define ATOMIC_FLAG_INIT {false} 1498#define ATOMIC_VAR_INIT(__v) {__v} 1499 1500// lock-free property 1501 1502#define ATOMIC_CHAR_LOCK_FREE 0 1503#define ATOMIC_CHAR16_T_LOCK_FREE 0 1504#define ATOMIC_CHAR32_T_LOCK_FREE 0 1505#define ATOMIC_WCHAR_T_LOCK_FREE 0 1506#define ATOMIC_SHORT_LOCK_FREE 0 1507#define ATOMIC_INT_LOCK_FREE 0 1508#define ATOMIC_LONG_LOCK_FREE 0 1509#define ATOMIC_LLONG_LOCK_FREE 0 1510 1511#endif // !__has_feature(cxx_atomic) 1512 1513_LIBCPP_END_NAMESPACE_STD 1514 1515#endif // _LIBCPP_ATOMIC 1516