1// -*- C++ -*- 2//===--------------------------- atomic -----------------------------------===// 3// 4// The LLVM Compiler Infrastructure 5// 6// This file is distributed under the University of Illinois Open Source 7// License. See LICENSE.TXT for details. 8// 9//===----------------------------------------------------------------------===// 10 11#ifndef _LIBCPP_ATOMIC 12#define _LIBCPP_ATOMIC 13 14/* 15 atomic synopsis 16 17namespace std 18{ 19 20// feature test macro 21 22#define __cpp_lib_atomic_is_always_lock_free // as specified by SG10 23 24// order and consistency 25 26typedef enum memory_order 27{ 28 memory_order_relaxed, 29 memory_order_consume, // load-consume 30 memory_order_acquire, // load-acquire 31 memory_order_release, // store-release 32 memory_order_acq_rel, // store-release load-acquire 33 memory_order_seq_cst // store-release load-acquire 34} memory_order; 35 36template <class T> T kill_dependency(T y) noexcept; 37 38// lock-free property 39 40#define ATOMIC_BOOL_LOCK_FREE unspecified 41#define ATOMIC_CHAR_LOCK_FREE unspecified 42#define ATOMIC_CHAR16_T_LOCK_FREE unspecified 43#define ATOMIC_CHAR32_T_LOCK_FREE unspecified 44#define ATOMIC_WCHAR_T_LOCK_FREE unspecified 45#define ATOMIC_SHORT_LOCK_FREE unspecified 46#define ATOMIC_INT_LOCK_FREE unspecified 47#define ATOMIC_LONG_LOCK_FREE unspecified 48#define ATOMIC_LLONG_LOCK_FREE unspecified 49#define ATOMIC_POINTER_LOCK_FREE unspecified 50 51// flag type and operations 52 53typedef struct atomic_flag 54{ 55 bool test_and_set(memory_order m = memory_order_seq_cst) volatile noexcept; 56 bool test_and_set(memory_order m = memory_order_seq_cst) noexcept; 57 void clear(memory_order m = memory_order_seq_cst) volatile noexcept; 58 void clear(memory_order m = memory_order_seq_cst) noexcept; 59 atomic_flag() noexcept = default; 60 atomic_flag(const atomic_flag&) = delete; 61 atomic_flag& operator=(const atomic_flag&) = delete; 62 atomic_flag& operator=(const atomic_flag&) volatile = delete; 63} atomic_flag; 64 65bool 66 atomic_flag_test_and_set(volatile atomic_flag* obj) noexcept; 67 68bool 69 atomic_flag_test_and_set(atomic_flag* obj) noexcept; 70 71bool 72 atomic_flag_test_and_set_explicit(volatile atomic_flag* obj, 73 memory_order m) noexcept; 74 75bool 76 atomic_flag_test_and_set_explicit(atomic_flag* obj, memory_order m) noexcept; 77 78void 79 atomic_flag_clear(volatile atomic_flag* obj) noexcept; 80 81void 82 atomic_flag_clear(atomic_flag* obj) noexcept; 83 84void 85 atomic_flag_clear_explicit(volatile atomic_flag* obj, memory_order m) noexcept; 86 87void 88 atomic_flag_clear_explicit(atomic_flag* obj, memory_order m) noexcept; 89 90#define ATOMIC_FLAG_INIT see below 91#define ATOMIC_VAR_INIT(value) see below 92 93template <class T> 94struct atomic 95{ 96 static constexpr bool is_always_lock_free; 97 bool is_lock_free() const volatile noexcept; 98 bool is_lock_free() const noexcept; 99 void store(T desr, memory_order m = memory_order_seq_cst) volatile noexcept; 100 void store(T desr, memory_order m = memory_order_seq_cst) noexcept; 101 T load(memory_order m = memory_order_seq_cst) const volatile noexcept; 102 T load(memory_order m = memory_order_seq_cst) const noexcept; 103 operator T() const volatile noexcept; 104 operator T() const noexcept; 105 T exchange(T desr, memory_order m = memory_order_seq_cst) volatile noexcept; 106 T exchange(T desr, memory_order m = memory_order_seq_cst) noexcept; 107 bool compare_exchange_weak(T& expc, T desr, 108 memory_order s, memory_order f) volatile noexcept; 109 bool compare_exchange_weak(T& expc, T desr, memory_order s, memory_order f) noexcept; 110 bool compare_exchange_strong(T& expc, T desr, 111 memory_order s, memory_order f) volatile noexcept; 112 bool compare_exchange_strong(T& expc, T desr, 113 memory_order s, memory_order f) noexcept; 114 bool compare_exchange_weak(T& expc, T desr, 115 memory_order m = memory_order_seq_cst) volatile noexcept; 116 bool compare_exchange_weak(T& expc, T desr, 117 memory_order m = memory_order_seq_cst) noexcept; 118 bool compare_exchange_strong(T& expc, T desr, 119 memory_order m = memory_order_seq_cst) volatile noexcept; 120 bool compare_exchange_strong(T& expc, T desr, 121 memory_order m = memory_order_seq_cst) noexcept; 122 123 atomic() noexcept = default; 124 constexpr atomic(T desr) noexcept; 125 atomic(const atomic&) = delete; 126 atomic& operator=(const atomic&) = delete; 127 atomic& operator=(const atomic&) volatile = delete; 128 T operator=(T) volatile noexcept; 129 T operator=(T) noexcept; 130}; 131 132template <> 133struct atomic<integral> 134{ 135 static constexpr bool is_always_lock_free; 136 bool is_lock_free() const volatile noexcept; 137 bool is_lock_free() const noexcept; 138 void store(integral desr, memory_order m = memory_order_seq_cst) volatile noexcept; 139 void store(integral desr, memory_order m = memory_order_seq_cst) noexcept; 140 integral load(memory_order m = memory_order_seq_cst) const volatile noexcept; 141 integral load(memory_order m = memory_order_seq_cst) const noexcept; 142 operator integral() const volatile noexcept; 143 operator integral() const noexcept; 144 integral exchange(integral desr, 145 memory_order m = memory_order_seq_cst) volatile noexcept; 146 integral exchange(integral desr, memory_order m = memory_order_seq_cst) noexcept; 147 bool compare_exchange_weak(integral& expc, integral desr, 148 memory_order s, memory_order f) volatile noexcept; 149 bool compare_exchange_weak(integral& expc, integral desr, 150 memory_order s, memory_order f) noexcept; 151 bool compare_exchange_strong(integral& expc, integral desr, 152 memory_order s, memory_order f) volatile noexcept; 153 bool compare_exchange_strong(integral& expc, integral desr, 154 memory_order s, memory_order f) noexcept; 155 bool compare_exchange_weak(integral& expc, integral desr, 156 memory_order m = memory_order_seq_cst) volatile noexcept; 157 bool compare_exchange_weak(integral& expc, integral desr, 158 memory_order m = memory_order_seq_cst) noexcept; 159 bool compare_exchange_strong(integral& expc, integral desr, 160 memory_order m = memory_order_seq_cst) volatile noexcept; 161 bool compare_exchange_strong(integral& expc, integral desr, 162 memory_order m = memory_order_seq_cst) noexcept; 163 164 integral 165 fetch_add(integral op, memory_order m = memory_order_seq_cst) volatile noexcept; 166 integral fetch_add(integral op, memory_order m = memory_order_seq_cst) noexcept; 167 integral 168 fetch_sub(integral op, memory_order m = memory_order_seq_cst) volatile noexcept; 169 integral fetch_sub(integral op, memory_order m = memory_order_seq_cst) noexcept; 170 integral 171 fetch_and(integral op, memory_order m = memory_order_seq_cst) volatile noexcept; 172 integral fetch_and(integral op, memory_order m = memory_order_seq_cst) noexcept; 173 integral 174 fetch_or(integral op, memory_order m = memory_order_seq_cst) volatile noexcept; 175 integral fetch_or(integral op, memory_order m = memory_order_seq_cst) noexcept; 176 integral 177 fetch_xor(integral op, memory_order m = memory_order_seq_cst) volatile noexcept; 178 integral fetch_xor(integral op, memory_order m = memory_order_seq_cst) noexcept; 179 180 atomic() noexcept = default; 181 constexpr atomic(integral desr) noexcept; 182 atomic(const atomic&) = delete; 183 atomic& operator=(const atomic&) = delete; 184 atomic& operator=(const atomic&) volatile = delete; 185 integral operator=(integral desr) volatile noexcept; 186 integral operator=(integral desr) noexcept; 187 188 integral operator++(int) volatile noexcept; 189 integral operator++(int) noexcept; 190 integral operator--(int) volatile noexcept; 191 integral operator--(int) noexcept; 192 integral operator++() volatile noexcept; 193 integral operator++() noexcept; 194 integral operator--() volatile noexcept; 195 integral operator--() noexcept; 196 integral operator+=(integral op) volatile noexcept; 197 integral operator+=(integral op) noexcept; 198 integral operator-=(integral op) volatile noexcept; 199 integral operator-=(integral op) noexcept; 200 integral operator&=(integral op) volatile noexcept; 201 integral operator&=(integral op) noexcept; 202 integral operator|=(integral op) volatile noexcept; 203 integral operator|=(integral op) noexcept; 204 integral operator^=(integral op) volatile noexcept; 205 integral operator^=(integral op) noexcept; 206}; 207 208template <class T> 209struct atomic<T*> 210{ 211 static constexpr bool is_always_lock_free; 212 bool is_lock_free() const volatile noexcept; 213 bool is_lock_free() const noexcept; 214 void store(T* desr, memory_order m = memory_order_seq_cst) volatile noexcept; 215 void store(T* desr, memory_order m = memory_order_seq_cst) noexcept; 216 T* load(memory_order m = memory_order_seq_cst) const volatile noexcept; 217 T* load(memory_order m = memory_order_seq_cst) const noexcept; 218 operator T*() const volatile noexcept; 219 operator T*() const noexcept; 220 T* exchange(T* desr, memory_order m = memory_order_seq_cst) volatile noexcept; 221 T* exchange(T* desr, memory_order m = memory_order_seq_cst) noexcept; 222 bool compare_exchange_weak(T*& expc, T* desr, 223 memory_order s, memory_order f) volatile noexcept; 224 bool compare_exchange_weak(T*& expc, T* desr, 225 memory_order s, memory_order f) noexcept; 226 bool compare_exchange_strong(T*& expc, T* desr, 227 memory_order s, memory_order f) volatile noexcept; 228 bool compare_exchange_strong(T*& expc, T* desr, 229 memory_order s, memory_order f) noexcept; 230 bool compare_exchange_weak(T*& expc, T* desr, 231 memory_order m = memory_order_seq_cst) volatile noexcept; 232 bool compare_exchange_weak(T*& expc, T* desr, 233 memory_order m = memory_order_seq_cst) noexcept; 234 bool compare_exchange_strong(T*& expc, T* desr, 235 memory_order m = memory_order_seq_cst) volatile noexcept; 236 bool compare_exchange_strong(T*& expc, T* desr, 237 memory_order m = memory_order_seq_cst) noexcept; 238 T* fetch_add(ptrdiff_t op, memory_order m = memory_order_seq_cst) volatile noexcept; 239 T* fetch_add(ptrdiff_t op, memory_order m = memory_order_seq_cst) noexcept; 240 T* fetch_sub(ptrdiff_t op, memory_order m = memory_order_seq_cst) volatile noexcept; 241 T* fetch_sub(ptrdiff_t op, memory_order m = memory_order_seq_cst) noexcept; 242 243 atomic() noexcept = default; 244 constexpr atomic(T* desr) noexcept; 245 atomic(const atomic&) = delete; 246 atomic& operator=(const atomic&) = delete; 247 atomic& operator=(const atomic&) volatile = delete; 248 249 T* operator=(T*) volatile noexcept; 250 T* operator=(T*) noexcept; 251 T* operator++(int) volatile noexcept; 252 T* operator++(int) noexcept; 253 T* operator--(int) volatile noexcept; 254 T* operator--(int) noexcept; 255 T* operator++() volatile noexcept; 256 T* operator++() noexcept; 257 T* operator--() volatile noexcept; 258 T* operator--() noexcept; 259 T* operator+=(ptrdiff_t op) volatile noexcept; 260 T* operator+=(ptrdiff_t op) noexcept; 261 T* operator-=(ptrdiff_t op) volatile noexcept; 262 T* operator-=(ptrdiff_t op) noexcept; 263}; 264 265 266template <class T> 267 bool 268 atomic_is_lock_free(const volatile atomic<T>* obj) noexcept; 269 270template <class T> 271 bool 272 atomic_is_lock_free(const atomic<T>* obj) noexcept; 273 274template <class T> 275 void 276 atomic_init(volatile atomic<T>* obj, T desr) noexcept; 277 278template <class T> 279 void 280 atomic_init(atomic<T>* obj, T desr) noexcept; 281 282template <class T> 283 void 284 atomic_store(volatile atomic<T>* obj, T desr) noexcept; 285 286template <class T> 287 void 288 atomic_store(atomic<T>* obj, T desr) noexcept; 289 290template <class T> 291 void 292 atomic_store_explicit(volatile atomic<T>* obj, T desr, memory_order m) noexcept; 293 294template <class T> 295 void 296 atomic_store_explicit(atomic<T>* obj, T desr, memory_order m) noexcept; 297 298template <class T> 299 T 300 atomic_load(const volatile atomic<T>* obj) noexcept; 301 302template <class T> 303 T 304 atomic_load(const atomic<T>* obj) noexcept; 305 306template <class T> 307 T 308 atomic_load_explicit(const volatile atomic<T>* obj, memory_order m) noexcept; 309 310template <class T> 311 T 312 atomic_load_explicit(const atomic<T>* obj, memory_order m) noexcept; 313 314template <class T> 315 T 316 atomic_exchange(volatile atomic<T>* obj, T desr) noexcept; 317 318template <class T> 319 T 320 atomic_exchange(atomic<T>* obj, T desr) noexcept; 321 322template <class T> 323 T 324 atomic_exchange_explicit(volatile atomic<T>* obj, T desr, memory_order m) noexcept; 325 326template <class T> 327 T 328 atomic_exchange_explicit(atomic<T>* obj, T desr, memory_order m) noexcept; 329 330template <class T> 331 bool 332 atomic_compare_exchange_weak(volatile atomic<T>* obj, T* expc, T desr) noexcept; 333 334template <class T> 335 bool 336 atomic_compare_exchange_weak(atomic<T>* obj, T* expc, T desr) noexcept; 337 338template <class T> 339 bool 340 atomic_compare_exchange_strong(volatile atomic<T>* obj, T* expc, T desr) noexcept; 341 342template <class T> 343 bool 344 atomic_compare_exchange_strong(atomic<T>* obj, T* expc, T desr) noexcept; 345 346template <class T> 347 bool 348 atomic_compare_exchange_weak_explicit(volatile atomic<T>* obj, T* expc, 349 T desr, 350 memory_order s, memory_order f) noexcept; 351 352template <class T> 353 bool 354 atomic_compare_exchange_weak_explicit(atomic<T>* obj, T* expc, T desr, 355 memory_order s, memory_order f) noexcept; 356 357template <class T> 358 bool 359 atomic_compare_exchange_strong_explicit(volatile atomic<T>* obj, 360 T* expc, T desr, 361 memory_order s, memory_order f) noexcept; 362 363template <class T> 364 bool 365 atomic_compare_exchange_strong_explicit(atomic<T>* obj, T* expc, 366 T desr, 367 memory_order s, memory_order f) noexcept; 368 369template <class Integral> 370 Integral 371 atomic_fetch_add(volatile atomic<Integral>* obj, Integral op) noexcept; 372 373template <class Integral> 374 Integral 375 atomic_fetch_add(atomic<Integral>* obj, Integral op) noexcept; 376 377template <class Integral> 378 Integral 379 atomic_fetch_add_explicit(volatile atomic<Integral>* obj, Integral op, 380 memory_order m) noexcept; 381template <class Integral> 382 Integral 383 atomic_fetch_add_explicit(atomic<Integral>* obj, Integral op, 384 memory_order m) noexcept; 385template <class Integral> 386 Integral 387 atomic_fetch_sub(volatile atomic<Integral>* obj, Integral op) noexcept; 388 389template <class Integral> 390 Integral 391 atomic_fetch_sub(atomic<Integral>* obj, Integral op) noexcept; 392 393template <class Integral> 394 Integral 395 atomic_fetch_sub_explicit(volatile atomic<Integral>* obj, Integral op, 396 memory_order m) noexcept; 397template <class Integral> 398 Integral 399 atomic_fetch_sub_explicit(atomic<Integral>* obj, Integral op, 400 memory_order m) noexcept; 401template <class Integral> 402 Integral 403 atomic_fetch_and(volatile atomic<Integral>* obj, Integral op) noexcept; 404 405template <class Integral> 406 Integral 407 atomic_fetch_and(atomic<Integral>* obj, Integral op) noexcept; 408 409template <class Integral> 410 Integral 411 atomic_fetch_and_explicit(volatile atomic<Integral>* obj, Integral op, 412 memory_order m) noexcept; 413template <class Integral> 414 Integral 415 atomic_fetch_and_explicit(atomic<Integral>* obj, Integral op, 416 memory_order m) noexcept; 417template <class Integral> 418 Integral 419 atomic_fetch_or(volatile atomic<Integral>* obj, Integral op) noexcept; 420 421template <class Integral> 422 Integral 423 atomic_fetch_or(atomic<Integral>* obj, Integral op) noexcept; 424 425template <class Integral> 426 Integral 427 atomic_fetch_or_explicit(volatile atomic<Integral>* obj, Integral op, 428 memory_order m) noexcept; 429template <class Integral> 430 Integral 431 atomic_fetch_or_explicit(atomic<Integral>* obj, Integral op, 432 memory_order m) noexcept; 433template <class Integral> 434 Integral 435 atomic_fetch_xor(volatile atomic<Integral>* obj, Integral op) noexcept; 436 437template <class Integral> 438 Integral 439 atomic_fetch_xor(atomic<Integral>* obj, Integral op) noexcept; 440 441template <class Integral> 442 Integral 443 atomic_fetch_xor_explicit(volatile atomic<Integral>* obj, Integral op, 444 memory_order m) noexcept; 445template <class Integral> 446 Integral 447 atomic_fetch_xor_explicit(atomic<Integral>* obj, Integral op, 448 memory_order m) noexcept; 449 450template <class T> 451 T* 452 atomic_fetch_add(volatile atomic<T*>* obj, ptrdiff_t op) noexcept; 453 454template <class T> 455 T* 456 atomic_fetch_add(atomic<T*>* obj, ptrdiff_t op) noexcept; 457 458template <class T> 459 T* 460 atomic_fetch_add_explicit(volatile atomic<T*>* obj, ptrdiff_t op, 461 memory_order m) noexcept; 462template <class T> 463 T* 464 atomic_fetch_add_explicit(atomic<T*>* obj, ptrdiff_t op, memory_order m) noexcept; 465 466template <class T> 467 T* 468 atomic_fetch_sub(volatile atomic<T*>* obj, ptrdiff_t op) noexcept; 469 470template <class T> 471 T* 472 atomic_fetch_sub(atomic<T*>* obj, ptrdiff_t op) noexcept; 473 474template <class T> 475 T* 476 atomic_fetch_sub_explicit(volatile atomic<T*>* obj, ptrdiff_t op, 477 memory_order m) noexcept; 478template <class T> 479 T* 480 atomic_fetch_sub_explicit(atomic<T*>* obj, ptrdiff_t op, memory_order m) noexcept; 481 482// Atomics for standard typedef types 483 484typedef atomic<bool> atomic_bool; 485typedef atomic<char> atomic_char; 486typedef atomic<signed char> atomic_schar; 487typedef atomic<unsigned char> atomic_uchar; 488typedef atomic<short> atomic_short; 489typedef atomic<unsigned short> atomic_ushort; 490typedef atomic<int> atomic_int; 491typedef atomic<unsigned int> atomic_uint; 492typedef atomic<long> atomic_long; 493typedef atomic<unsigned long> atomic_ulong; 494typedef atomic<long long> atomic_llong; 495typedef atomic<unsigned long long> atomic_ullong; 496typedef atomic<char16_t> atomic_char16_t; 497typedef atomic<char32_t> atomic_char32_t; 498typedef atomic<wchar_t> atomic_wchar_t; 499 500typedef atomic<int_least8_t> atomic_int_least8_t; 501typedef atomic<uint_least8_t> atomic_uint_least8_t; 502typedef atomic<int_least16_t> atomic_int_least16_t; 503typedef atomic<uint_least16_t> atomic_uint_least16_t; 504typedef atomic<int_least32_t> atomic_int_least32_t; 505typedef atomic<uint_least32_t> atomic_uint_least32_t; 506typedef atomic<int_least64_t> atomic_int_least64_t; 507typedef atomic<uint_least64_t> atomic_uint_least64_t; 508 509typedef atomic<int_fast8_t> atomic_int_fast8_t; 510typedef atomic<uint_fast8_t> atomic_uint_fast8_t; 511typedef atomic<int_fast16_t> atomic_int_fast16_t; 512typedef atomic<uint_fast16_t> atomic_uint_fast16_t; 513typedef atomic<int_fast32_t> atomic_int_fast32_t; 514typedef atomic<uint_fast32_t> atomic_uint_fast32_t; 515typedef atomic<int_fast64_t> atomic_int_fast64_t; 516typedef atomic<uint_fast64_t> atomic_uint_fast64_t; 517 518typedef atomic<intptr_t> atomic_intptr_t; 519typedef atomic<uintptr_t> atomic_uintptr_t; 520typedef atomic<size_t> atomic_size_t; 521typedef atomic<ptrdiff_t> atomic_ptrdiff_t; 522typedef atomic<intmax_t> atomic_intmax_t; 523typedef atomic<uintmax_t> atomic_uintmax_t; 524 525// fences 526 527void atomic_thread_fence(memory_order m) noexcept; 528void atomic_signal_fence(memory_order m) noexcept; 529 530} // std 531 532*/ 533 534#include <__config> 535#include <cstddef> 536#include <cstdint> 537#include <type_traits> 538 539#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 540#pragma GCC system_header 541#endif 542 543#ifdef _LIBCPP_HAS_NO_THREADS 544#error <atomic> is not supported on this single threaded system 545#endif 546#if !defined(_LIBCPP_HAS_C_ATOMIC_IMP) && !defined(_LIBCPP_HAS_GCC_ATOMIC_IMP) 547#error <atomic> is not implemented 548#endif 549 550#if _LIBCPP_STD_VER > 14 551// FIXME: use the right feature test macro value as chose by SG10. 552# define __cpp_lib_atomic_is_always_lock_free 201603L 553#endif 554 555_LIBCPP_BEGIN_NAMESPACE_STD 556 557typedef enum memory_order 558{ 559 memory_order_relaxed, memory_order_consume, memory_order_acquire, 560 memory_order_release, memory_order_acq_rel, memory_order_seq_cst 561} memory_order; 562 563#if defined(_LIBCPP_HAS_GCC_ATOMIC_IMP) 564namespace __gcc_atomic { 565template <typename _Tp> 566struct __gcc_atomic_t { 567 568#if _GNUC_VER >= 501 569 static_assert(is_trivially_copyable<_Tp>::value, 570 "std::atomic<Tp> requires that 'Tp' be a trivially copyable type"); 571#endif 572 573 _LIBCPP_INLINE_VISIBILITY 574#ifndef _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS 575 __gcc_atomic_t() _NOEXCEPT = default; 576#else 577 __gcc_atomic_t() _NOEXCEPT : __a_value() {} 578#endif // _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS 579 _LIBCPP_CONSTEXPR explicit __gcc_atomic_t(_Tp value) _NOEXCEPT 580 : __a_value(value) {} 581 _Tp __a_value; 582}; 583#define _Atomic(x) __gcc_atomic::__gcc_atomic_t<x> 584 585template <typename _Tp> _Tp __create(); 586 587template <typename _Tp, typename _Td> 588typename enable_if<sizeof(_Tp()->__a_value = __create<_Td>()), char>::type 589 __test_atomic_assignable(int); 590template <typename _Tp, typename _Up> 591__two __test_atomic_assignable(...); 592 593template <typename _Tp, typename _Td> 594struct __can_assign { 595 static const bool value = 596 sizeof(__test_atomic_assignable<_Tp, _Td>(1)) == sizeof(char); 597}; 598 599static inline _LIBCPP_CONSTEXPR int __to_gcc_order(memory_order __order) { 600 // Avoid switch statement to make this a constexpr. 601 return __order == memory_order_relaxed ? __ATOMIC_RELAXED: 602 (__order == memory_order_acquire ? __ATOMIC_ACQUIRE: 603 (__order == memory_order_release ? __ATOMIC_RELEASE: 604 (__order == memory_order_seq_cst ? __ATOMIC_SEQ_CST: 605 (__order == memory_order_acq_rel ? __ATOMIC_ACQ_REL: 606 __ATOMIC_CONSUME)))); 607} 608 609static inline _LIBCPP_CONSTEXPR int __to_gcc_failure_order(memory_order __order) { 610 // Avoid switch statement to make this a constexpr. 611 return __order == memory_order_relaxed ? __ATOMIC_RELAXED: 612 (__order == memory_order_acquire ? __ATOMIC_ACQUIRE: 613 (__order == memory_order_release ? __ATOMIC_RELAXED: 614 (__order == memory_order_seq_cst ? __ATOMIC_SEQ_CST: 615 (__order == memory_order_acq_rel ? __ATOMIC_ACQUIRE: 616 __ATOMIC_CONSUME)))); 617} 618 619} // namespace __gcc_atomic 620 621template <typename _Tp> 622static inline 623typename enable_if< 624 __gcc_atomic::__can_assign<volatile _Atomic(_Tp)*, _Tp>::value>::type 625__c11_atomic_init(volatile _Atomic(_Tp)* __a, _Tp __val) { 626 __a->__a_value = __val; 627} 628 629template <typename _Tp> 630static inline 631typename enable_if< 632 !__gcc_atomic::__can_assign<volatile _Atomic(_Tp)*, _Tp>::value && 633 __gcc_atomic::__can_assign< _Atomic(_Tp)*, _Tp>::value>::type 634__c11_atomic_init(volatile _Atomic(_Tp)* __a, _Tp __val) { 635 // [atomics.types.generic]p1 guarantees _Tp is trivially copyable. Because 636 // the default operator= in an object is not volatile, a byte-by-byte copy 637 // is required. 638 volatile char* to = reinterpret_cast<volatile char*>(&__a->__a_value); 639 volatile char* end = to + sizeof(_Tp); 640 char* from = reinterpret_cast<char*>(&__val); 641 while (to != end) { 642 *to++ = *from++; 643 } 644} 645 646template <typename _Tp> 647static inline void __c11_atomic_init(_Atomic(_Tp)* __a, _Tp __val) { 648 __a->__a_value = __val; 649} 650 651static inline void __c11_atomic_thread_fence(memory_order __order) { 652 __atomic_thread_fence(__gcc_atomic::__to_gcc_order(__order)); 653} 654 655static inline void __c11_atomic_signal_fence(memory_order __order) { 656 __atomic_signal_fence(__gcc_atomic::__to_gcc_order(__order)); 657} 658 659template <typename _Tp> 660static inline void __c11_atomic_store(volatile _Atomic(_Tp)* __a, _Tp __val, 661 memory_order __order) { 662 return __atomic_store(&__a->__a_value, &__val, 663 __gcc_atomic::__to_gcc_order(__order)); 664} 665 666template <typename _Tp> 667static inline void __c11_atomic_store(_Atomic(_Tp)* __a, _Tp __val, 668 memory_order __order) { 669 __atomic_store(&__a->__a_value, &__val, 670 __gcc_atomic::__to_gcc_order(__order)); 671} 672 673template <typename _Tp> 674static inline _Tp __c11_atomic_load(volatile _Atomic(_Tp)* __a, 675 memory_order __order) { 676 _Tp __ret; 677 __atomic_load(&__a->__a_value, &__ret, 678 __gcc_atomic::__to_gcc_order(__order)); 679 return __ret; 680} 681 682template <typename _Tp> 683static inline _Tp __c11_atomic_load(_Atomic(_Tp)* __a, memory_order __order) { 684 _Tp __ret; 685 __atomic_load(&__a->__a_value, &__ret, 686 __gcc_atomic::__to_gcc_order(__order)); 687 return __ret; 688} 689 690template <typename _Tp> 691static inline _Tp __c11_atomic_exchange(volatile _Atomic(_Tp)* __a, 692 _Tp __value, memory_order __order) { 693 _Tp __ret; 694 __atomic_exchange(&__a->__a_value, &__value, &__ret, 695 __gcc_atomic::__to_gcc_order(__order)); 696 return __ret; 697} 698 699template <typename _Tp> 700static inline _Tp __c11_atomic_exchange(_Atomic(_Tp)* __a, _Tp __value, 701 memory_order __order) { 702 _Tp __ret; 703 __atomic_exchange(&__a->__a_value, &__value, &__ret, 704 __gcc_atomic::__to_gcc_order(__order)); 705 return __ret; 706} 707 708template <typename _Tp> 709static inline bool __c11_atomic_compare_exchange_strong( 710 volatile _Atomic(_Tp)* __a, _Tp* __expected, _Tp __value, 711 memory_order __success, memory_order __failure) { 712 return __atomic_compare_exchange(&__a->__a_value, __expected, &__value, 713 false, 714 __gcc_atomic::__to_gcc_order(__success), 715 __gcc_atomic::__to_gcc_failure_order(__failure)); 716} 717 718template <typename _Tp> 719static inline bool __c11_atomic_compare_exchange_strong( 720 _Atomic(_Tp)* __a, _Tp* __expected, _Tp __value, memory_order __success, 721 memory_order __failure) { 722 return __atomic_compare_exchange(&__a->__a_value, __expected, &__value, 723 false, 724 __gcc_atomic::__to_gcc_order(__success), 725 __gcc_atomic::__to_gcc_failure_order(__failure)); 726} 727 728template <typename _Tp> 729static inline bool __c11_atomic_compare_exchange_weak( 730 volatile _Atomic(_Tp)* __a, _Tp* __expected, _Tp __value, 731 memory_order __success, memory_order __failure) { 732 return __atomic_compare_exchange(&__a->__a_value, __expected, &__value, 733 true, 734 __gcc_atomic::__to_gcc_order(__success), 735 __gcc_atomic::__to_gcc_failure_order(__failure)); 736} 737 738template <typename _Tp> 739static inline bool __c11_atomic_compare_exchange_weak( 740 _Atomic(_Tp)* __a, _Tp* __expected, _Tp __value, memory_order __success, 741 memory_order __failure) { 742 return __atomic_compare_exchange(&__a->__a_value, __expected, &__value, 743 true, 744 __gcc_atomic::__to_gcc_order(__success), 745 __gcc_atomic::__to_gcc_failure_order(__failure)); 746} 747 748template <typename _Tp> 749struct __skip_amt { enum {value = 1}; }; 750 751template <typename _Tp> 752struct __skip_amt<_Tp*> { enum {value = sizeof(_Tp)}; }; 753 754// FIXME: Haven't figured out what the spec says about using arrays with 755// atomic_fetch_add. Force a failure rather than creating bad behavior. 756template <typename _Tp> 757struct __skip_amt<_Tp[]> { }; 758template <typename _Tp, int n> 759struct __skip_amt<_Tp[n]> { }; 760 761template <typename _Tp, typename _Td> 762static inline _Tp __c11_atomic_fetch_add(volatile _Atomic(_Tp)* __a, 763 _Td __delta, memory_order __order) { 764 return __atomic_fetch_add(&__a->__a_value, __delta * __skip_amt<_Tp>::value, 765 __gcc_atomic::__to_gcc_order(__order)); 766} 767 768template <typename _Tp, typename _Td> 769static inline _Tp __c11_atomic_fetch_add(_Atomic(_Tp)* __a, _Td __delta, 770 memory_order __order) { 771 return __atomic_fetch_add(&__a->__a_value, __delta * __skip_amt<_Tp>::value, 772 __gcc_atomic::__to_gcc_order(__order)); 773} 774 775template <typename _Tp, typename _Td> 776static inline _Tp __c11_atomic_fetch_sub(volatile _Atomic(_Tp)* __a, 777 _Td __delta, memory_order __order) { 778 return __atomic_fetch_sub(&__a->__a_value, __delta * __skip_amt<_Tp>::value, 779 __gcc_atomic::__to_gcc_order(__order)); 780} 781 782template <typename _Tp, typename _Td> 783static inline _Tp __c11_atomic_fetch_sub(_Atomic(_Tp)* __a, _Td __delta, 784 memory_order __order) { 785 return __atomic_fetch_sub(&__a->__a_value, __delta * __skip_amt<_Tp>::value, 786 __gcc_atomic::__to_gcc_order(__order)); 787} 788 789template <typename _Tp> 790static inline _Tp __c11_atomic_fetch_and(volatile _Atomic(_Tp)* __a, 791 _Tp __pattern, memory_order __order) { 792 return __atomic_fetch_and(&__a->__a_value, __pattern, 793 __gcc_atomic::__to_gcc_order(__order)); 794} 795 796template <typename _Tp> 797static inline _Tp __c11_atomic_fetch_and(_Atomic(_Tp)* __a, 798 _Tp __pattern, memory_order __order) { 799 return __atomic_fetch_and(&__a->__a_value, __pattern, 800 __gcc_atomic::__to_gcc_order(__order)); 801} 802 803template <typename _Tp> 804static inline _Tp __c11_atomic_fetch_or(volatile _Atomic(_Tp)* __a, 805 _Tp __pattern, memory_order __order) { 806 return __atomic_fetch_or(&__a->__a_value, __pattern, 807 __gcc_atomic::__to_gcc_order(__order)); 808} 809 810template <typename _Tp> 811static inline _Tp __c11_atomic_fetch_or(_Atomic(_Tp)* __a, _Tp __pattern, 812 memory_order __order) { 813 return __atomic_fetch_or(&__a->__a_value, __pattern, 814 __gcc_atomic::__to_gcc_order(__order)); 815} 816 817template <typename _Tp> 818static inline _Tp __c11_atomic_fetch_xor(volatile _Atomic(_Tp)* __a, 819 _Tp __pattern, memory_order __order) { 820 return __atomic_fetch_xor(&__a->__a_value, __pattern, 821 __gcc_atomic::__to_gcc_order(__order)); 822} 823 824template <typename _Tp> 825static inline _Tp __c11_atomic_fetch_xor(_Atomic(_Tp)* __a, _Tp __pattern, 826 memory_order __order) { 827 return __atomic_fetch_xor(&__a->__a_value, __pattern, 828 __gcc_atomic::__to_gcc_order(__order)); 829} 830#endif // _LIBCPP_HAS_GCC_ATOMIC_IMP 831 832template <class _Tp> 833inline _LIBCPP_INLINE_VISIBILITY 834_Tp 835kill_dependency(_Tp __y) _NOEXCEPT 836{ 837 return __y; 838} 839 840#define ATOMIC_BOOL_LOCK_FREE __GCC_ATOMIC_BOOL_LOCK_FREE 841#define ATOMIC_CHAR_LOCK_FREE __GCC_ATOMIC_CHAR_LOCK_FREE 842#define ATOMIC_CHAR16_T_LOCK_FREE __GCC_ATOMIC_CHAR16_T_LOCK_FREE 843#define ATOMIC_CHAR32_T_LOCK_FREE __GCC_ATOMIC_CHAR32_T_LOCK_FREE 844#define ATOMIC_WCHAR_T_LOCK_FREE __GCC_ATOMIC_WCHAR_T_LOCK_FREE 845#define ATOMIC_SHORT_LOCK_FREE __GCC_ATOMIC_SHORT_LOCK_FREE 846#define ATOMIC_INT_LOCK_FREE __GCC_ATOMIC_INT_LOCK_FREE 847#define ATOMIC_LONG_LOCK_FREE __GCC_ATOMIC_LONG_LOCK_FREE 848#define ATOMIC_LLONG_LOCK_FREE __GCC_ATOMIC_LLONG_LOCK_FREE 849#define ATOMIC_POINTER_LOCK_FREE __GCC_ATOMIC_POINTER_LOCK_FREE 850 851// general atomic<T> 852 853template <class _Tp, bool = is_integral<_Tp>::value && !is_same<_Tp, bool>::value> 854struct __atomic_base // false 855{ 856 mutable _Atomic(_Tp) __a_; 857 858#if defined(__cpp_lib_atomic_is_always_lock_free) 859 static _LIBCPP_CONSTEXPR bool is_always_lock_free = __atomic_always_lock_free(sizeof(__a_), 0); 860#endif 861 862 _LIBCPP_INLINE_VISIBILITY 863 bool is_lock_free() const volatile _NOEXCEPT 864 { 865#if defined(_LIBCPP_HAS_C_ATOMIC_IMP) 866 return __c11_atomic_is_lock_free(sizeof(_Tp)); 867#else 868 return __atomic_is_lock_free(sizeof(_Tp), 0); 869#endif 870 } 871 _LIBCPP_INLINE_VISIBILITY 872 bool is_lock_free() const _NOEXCEPT 873 {return static_cast<__atomic_base const volatile*>(this)->is_lock_free();} 874 _LIBCPP_INLINE_VISIBILITY 875 void store(_Tp __d, memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT 876 {__c11_atomic_store(&__a_, __d, __m);} 877 _LIBCPP_INLINE_VISIBILITY 878 void store(_Tp __d, memory_order __m = memory_order_seq_cst) _NOEXCEPT 879 {__c11_atomic_store(&__a_, __d, __m);} 880 _LIBCPP_INLINE_VISIBILITY 881 _Tp load(memory_order __m = memory_order_seq_cst) const volatile _NOEXCEPT 882 {return __c11_atomic_load(&__a_, __m);} 883 _LIBCPP_INLINE_VISIBILITY 884 _Tp load(memory_order __m = memory_order_seq_cst) const _NOEXCEPT 885 {return __c11_atomic_load(&__a_, __m);} 886 _LIBCPP_INLINE_VISIBILITY 887 operator _Tp() const volatile _NOEXCEPT {return load();} 888 _LIBCPP_INLINE_VISIBILITY 889 operator _Tp() const _NOEXCEPT {return load();} 890 _LIBCPP_INLINE_VISIBILITY 891 _Tp exchange(_Tp __d, memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT 892 {return __c11_atomic_exchange(&__a_, __d, __m);} 893 _LIBCPP_INLINE_VISIBILITY 894 _Tp exchange(_Tp __d, memory_order __m = memory_order_seq_cst) _NOEXCEPT 895 {return __c11_atomic_exchange(&__a_, __d, __m);} 896 _LIBCPP_INLINE_VISIBILITY 897 bool compare_exchange_weak(_Tp& __e, _Tp __d, 898 memory_order __s, memory_order __f) volatile _NOEXCEPT 899 {return __c11_atomic_compare_exchange_weak(&__a_, &__e, __d, __s, __f);} 900 _LIBCPP_INLINE_VISIBILITY 901 bool compare_exchange_weak(_Tp& __e, _Tp __d, 902 memory_order __s, memory_order __f) _NOEXCEPT 903 {return __c11_atomic_compare_exchange_weak(&__a_, &__e, __d, __s, __f);} 904 _LIBCPP_INLINE_VISIBILITY 905 bool compare_exchange_strong(_Tp& __e, _Tp __d, 906 memory_order __s, memory_order __f) volatile _NOEXCEPT 907 {return __c11_atomic_compare_exchange_strong(&__a_, &__e, __d, __s, __f);} 908 _LIBCPP_INLINE_VISIBILITY 909 bool compare_exchange_strong(_Tp& __e, _Tp __d, 910 memory_order __s, memory_order __f) _NOEXCEPT 911 {return __c11_atomic_compare_exchange_strong(&__a_, &__e, __d, __s, __f);} 912 _LIBCPP_INLINE_VISIBILITY 913 bool compare_exchange_weak(_Tp& __e, _Tp __d, 914 memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT 915 {return __c11_atomic_compare_exchange_weak(&__a_, &__e, __d, __m, __m);} 916 _LIBCPP_INLINE_VISIBILITY 917 bool compare_exchange_weak(_Tp& __e, _Tp __d, 918 memory_order __m = memory_order_seq_cst) _NOEXCEPT 919 {return __c11_atomic_compare_exchange_weak(&__a_, &__e, __d, __m, __m);} 920 _LIBCPP_INLINE_VISIBILITY 921 bool compare_exchange_strong(_Tp& __e, _Tp __d, 922 memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT 923 {return __c11_atomic_compare_exchange_strong(&__a_, &__e, __d, __m, __m);} 924 _LIBCPP_INLINE_VISIBILITY 925 bool compare_exchange_strong(_Tp& __e, _Tp __d, 926 memory_order __m = memory_order_seq_cst) _NOEXCEPT 927 {return __c11_atomic_compare_exchange_strong(&__a_, &__e, __d, __m, __m);} 928 929 _LIBCPP_INLINE_VISIBILITY 930#ifndef _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS 931 __atomic_base() _NOEXCEPT = default; 932#else 933 __atomic_base() _NOEXCEPT : __a_() {} 934#endif // _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS 935 936 _LIBCPP_INLINE_VISIBILITY 937 _LIBCPP_CONSTEXPR __atomic_base(_Tp __d) _NOEXCEPT : __a_(__d) {} 938#ifndef _LIBCPP_HAS_NO_DELETED_FUNCTIONS 939 __atomic_base(const __atomic_base&) = delete; 940 __atomic_base& operator=(const __atomic_base&) = delete; 941 __atomic_base& operator=(const __atomic_base&) volatile = delete; 942#else // _LIBCPP_HAS_NO_DELETED_FUNCTIONS 943private: 944 __atomic_base(const __atomic_base&); 945 __atomic_base& operator=(const __atomic_base&); 946 __atomic_base& operator=(const __atomic_base&) volatile; 947#endif // _LIBCPP_HAS_NO_DELETED_FUNCTIONS 948}; 949 950#if defined(__cpp_lib_atomic_is_always_lock_free) 951template <class _Tp, bool __b> 952_LIBCPP_CONSTEXPR bool __atomic_base<_Tp, __b>::is_always_lock_free; 953#endif 954 955// atomic<Integral> 956 957template <class _Tp> 958struct __atomic_base<_Tp, true> 959 : public __atomic_base<_Tp, false> 960{ 961 typedef __atomic_base<_Tp, false> __base; 962 _LIBCPP_INLINE_VISIBILITY 963 __atomic_base() _NOEXCEPT _LIBCPP_DEFAULT 964 _LIBCPP_INLINE_VISIBILITY 965 _LIBCPP_CONSTEXPR __atomic_base(_Tp __d) _NOEXCEPT : __base(__d) {} 966 967 _LIBCPP_INLINE_VISIBILITY 968 _Tp fetch_add(_Tp __op, memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT 969 {return __c11_atomic_fetch_add(&this->__a_, __op, __m);} 970 _LIBCPP_INLINE_VISIBILITY 971 _Tp fetch_add(_Tp __op, memory_order __m = memory_order_seq_cst) _NOEXCEPT 972 {return __c11_atomic_fetch_add(&this->__a_, __op, __m);} 973 _LIBCPP_INLINE_VISIBILITY 974 _Tp fetch_sub(_Tp __op, memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT 975 {return __c11_atomic_fetch_sub(&this->__a_, __op, __m);} 976 _LIBCPP_INLINE_VISIBILITY 977 _Tp fetch_sub(_Tp __op, memory_order __m = memory_order_seq_cst) _NOEXCEPT 978 {return __c11_atomic_fetch_sub(&this->__a_, __op, __m);} 979 _LIBCPP_INLINE_VISIBILITY 980 _Tp fetch_and(_Tp __op, memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT 981 {return __c11_atomic_fetch_and(&this->__a_, __op, __m);} 982 _LIBCPP_INLINE_VISIBILITY 983 _Tp fetch_and(_Tp __op, memory_order __m = memory_order_seq_cst) _NOEXCEPT 984 {return __c11_atomic_fetch_and(&this->__a_, __op, __m);} 985 _LIBCPP_INLINE_VISIBILITY 986 _Tp fetch_or(_Tp __op, memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT 987 {return __c11_atomic_fetch_or(&this->__a_, __op, __m);} 988 _LIBCPP_INLINE_VISIBILITY 989 _Tp fetch_or(_Tp __op, memory_order __m = memory_order_seq_cst) _NOEXCEPT 990 {return __c11_atomic_fetch_or(&this->__a_, __op, __m);} 991 _LIBCPP_INLINE_VISIBILITY 992 _Tp fetch_xor(_Tp __op, memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT 993 {return __c11_atomic_fetch_xor(&this->__a_, __op, __m);} 994 _LIBCPP_INLINE_VISIBILITY 995 _Tp fetch_xor(_Tp __op, memory_order __m = memory_order_seq_cst) _NOEXCEPT 996 {return __c11_atomic_fetch_xor(&this->__a_, __op, __m);} 997 998 _LIBCPP_INLINE_VISIBILITY 999 _Tp operator++(int) volatile _NOEXCEPT {return fetch_add(_Tp(1));} 1000 _LIBCPP_INLINE_VISIBILITY 1001 _Tp operator++(int) _NOEXCEPT {return fetch_add(_Tp(1));} 1002 _LIBCPP_INLINE_VISIBILITY 1003 _Tp operator--(int) volatile _NOEXCEPT {return fetch_sub(_Tp(1));} 1004 _LIBCPP_INLINE_VISIBILITY 1005 _Tp operator--(int) _NOEXCEPT {return fetch_sub(_Tp(1));} 1006 _LIBCPP_INLINE_VISIBILITY 1007 _Tp operator++() volatile _NOEXCEPT {return fetch_add(_Tp(1)) + _Tp(1);} 1008 _LIBCPP_INLINE_VISIBILITY 1009 _Tp operator++() _NOEXCEPT {return fetch_add(_Tp(1)) + _Tp(1);} 1010 _LIBCPP_INLINE_VISIBILITY 1011 _Tp operator--() volatile _NOEXCEPT {return fetch_sub(_Tp(1)) - _Tp(1);} 1012 _LIBCPP_INLINE_VISIBILITY 1013 _Tp operator--() _NOEXCEPT {return fetch_sub(_Tp(1)) - _Tp(1);} 1014 _LIBCPP_INLINE_VISIBILITY 1015 _Tp operator+=(_Tp __op) volatile _NOEXCEPT {return fetch_add(__op) + __op;} 1016 _LIBCPP_INLINE_VISIBILITY 1017 _Tp operator+=(_Tp __op) _NOEXCEPT {return fetch_add(__op) + __op;} 1018 _LIBCPP_INLINE_VISIBILITY 1019 _Tp operator-=(_Tp __op) volatile _NOEXCEPT {return fetch_sub(__op) - __op;} 1020 _LIBCPP_INLINE_VISIBILITY 1021 _Tp operator-=(_Tp __op) _NOEXCEPT {return fetch_sub(__op) - __op;} 1022 _LIBCPP_INLINE_VISIBILITY 1023 _Tp operator&=(_Tp __op) volatile _NOEXCEPT {return fetch_and(__op) & __op;} 1024 _LIBCPP_INLINE_VISIBILITY 1025 _Tp operator&=(_Tp __op) _NOEXCEPT {return fetch_and(__op) & __op;} 1026 _LIBCPP_INLINE_VISIBILITY 1027 _Tp operator|=(_Tp __op) volatile _NOEXCEPT {return fetch_or(__op) | __op;} 1028 _LIBCPP_INLINE_VISIBILITY 1029 _Tp operator|=(_Tp __op) _NOEXCEPT {return fetch_or(__op) | __op;} 1030 _LIBCPP_INLINE_VISIBILITY 1031 _Tp operator^=(_Tp __op) volatile _NOEXCEPT {return fetch_xor(__op) ^ __op;} 1032 _LIBCPP_INLINE_VISIBILITY 1033 _Tp operator^=(_Tp __op) _NOEXCEPT {return fetch_xor(__op) ^ __op;} 1034}; 1035 1036// atomic<T> 1037 1038template <class _Tp> 1039struct atomic 1040 : public __atomic_base<_Tp> 1041{ 1042 typedef __atomic_base<_Tp> __base; 1043 _LIBCPP_INLINE_VISIBILITY 1044 atomic() _NOEXCEPT _LIBCPP_DEFAULT 1045 _LIBCPP_INLINE_VISIBILITY 1046 _LIBCPP_CONSTEXPR atomic(_Tp __d) _NOEXCEPT : __base(__d) {} 1047 1048 _LIBCPP_INLINE_VISIBILITY 1049 _Tp operator=(_Tp __d) volatile _NOEXCEPT 1050 {__base::store(__d); return __d;} 1051 _LIBCPP_INLINE_VISIBILITY 1052 _Tp operator=(_Tp __d) _NOEXCEPT 1053 {__base::store(__d); return __d;} 1054}; 1055 1056// atomic<T*> 1057 1058template <class _Tp> 1059struct atomic<_Tp*> 1060 : public __atomic_base<_Tp*> 1061{ 1062 typedef __atomic_base<_Tp*> __base; 1063 _LIBCPP_INLINE_VISIBILITY 1064 atomic() _NOEXCEPT _LIBCPP_DEFAULT 1065 _LIBCPP_INLINE_VISIBILITY 1066 _LIBCPP_CONSTEXPR atomic(_Tp* __d) _NOEXCEPT : __base(__d) {} 1067 1068 _LIBCPP_INLINE_VISIBILITY 1069 _Tp* operator=(_Tp* __d) volatile _NOEXCEPT 1070 {__base::store(__d); return __d;} 1071 _LIBCPP_INLINE_VISIBILITY 1072 _Tp* operator=(_Tp* __d) _NOEXCEPT 1073 {__base::store(__d); return __d;} 1074 1075 _LIBCPP_INLINE_VISIBILITY 1076 _Tp* fetch_add(ptrdiff_t __op, memory_order __m = memory_order_seq_cst) 1077 volatile _NOEXCEPT 1078 {return __c11_atomic_fetch_add(&this->__a_, __op, __m);} 1079 _LIBCPP_INLINE_VISIBILITY 1080 _Tp* fetch_add(ptrdiff_t __op, memory_order __m = memory_order_seq_cst) _NOEXCEPT 1081 {return __c11_atomic_fetch_add(&this->__a_, __op, __m);} 1082 _LIBCPP_INLINE_VISIBILITY 1083 _Tp* fetch_sub(ptrdiff_t __op, memory_order __m = memory_order_seq_cst) 1084 volatile _NOEXCEPT 1085 {return __c11_atomic_fetch_sub(&this->__a_, __op, __m);} 1086 _LIBCPP_INLINE_VISIBILITY 1087 _Tp* fetch_sub(ptrdiff_t __op, memory_order __m = memory_order_seq_cst) _NOEXCEPT 1088 {return __c11_atomic_fetch_sub(&this->__a_, __op, __m);} 1089 1090 _LIBCPP_INLINE_VISIBILITY 1091 _Tp* operator++(int) volatile _NOEXCEPT {return fetch_add(1);} 1092 _LIBCPP_INLINE_VISIBILITY 1093 _Tp* operator++(int) _NOEXCEPT {return fetch_add(1);} 1094 _LIBCPP_INLINE_VISIBILITY 1095 _Tp* operator--(int) volatile _NOEXCEPT {return fetch_sub(1);} 1096 _LIBCPP_INLINE_VISIBILITY 1097 _Tp* operator--(int) _NOEXCEPT {return fetch_sub(1);} 1098 _LIBCPP_INLINE_VISIBILITY 1099 _Tp* operator++() volatile _NOEXCEPT {return fetch_add(1) + 1;} 1100 _LIBCPP_INLINE_VISIBILITY 1101 _Tp* operator++() _NOEXCEPT {return fetch_add(1) + 1;} 1102 _LIBCPP_INLINE_VISIBILITY 1103 _Tp* operator--() volatile _NOEXCEPT {return fetch_sub(1) - 1;} 1104 _LIBCPP_INLINE_VISIBILITY 1105 _Tp* operator--() _NOEXCEPT {return fetch_sub(1) - 1;} 1106 _LIBCPP_INLINE_VISIBILITY 1107 _Tp* operator+=(ptrdiff_t __op) volatile _NOEXCEPT {return fetch_add(__op) + __op;} 1108 _LIBCPP_INLINE_VISIBILITY 1109 _Tp* operator+=(ptrdiff_t __op) _NOEXCEPT {return fetch_add(__op) + __op;} 1110 _LIBCPP_INLINE_VISIBILITY 1111 _Tp* operator-=(ptrdiff_t __op) volatile _NOEXCEPT {return fetch_sub(__op) - __op;} 1112 _LIBCPP_INLINE_VISIBILITY 1113 _Tp* operator-=(ptrdiff_t __op) _NOEXCEPT {return fetch_sub(__op) - __op;} 1114}; 1115 1116// atomic_is_lock_free 1117 1118template <class _Tp> 1119inline _LIBCPP_INLINE_VISIBILITY 1120bool 1121atomic_is_lock_free(const volatile atomic<_Tp>* __o) _NOEXCEPT 1122{ 1123 return __o->is_lock_free(); 1124} 1125 1126template <class _Tp> 1127inline _LIBCPP_INLINE_VISIBILITY 1128bool 1129atomic_is_lock_free(const atomic<_Tp>* __o) _NOEXCEPT 1130{ 1131 return __o->is_lock_free(); 1132} 1133 1134// atomic_init 1135 1136template <class _Tp> 1137inline _LIBCPP_INLINE_VISIBILITY 1138void 1139atomic_init(volatile atomic<_Tp>* __o, _Tp __d) _NOEXCEPT 1140{ 1141 __c11_atomic_init(&__o->__a_, __d); 1142} 1143 1144template <class _Tp> 1145inline _LIBCPP_INLINE_VISIBILITY 1146void 1147atomic_init(atomic<_Tp>* __o, _Tp __d) _NOEXCEPT 1148{ 1149 __c11_atomic_init(&__o->__a_, __d); 1150} 1151 1152// atomic_store 1153 1154template <class _Tp> 1155inline _LIBCPP_INLINE_VISIBILITY 1156void 1157atomic_store(volatile atomic<_Tp>* __o, _Tp __d) _NOEXCEPT 1158{ 1159 __o->store(__d); 1160} 1161 1162template <class _Tp> 1163inline _LIBCPP_INLINE_VISIBILITY 1164void 1165atomic_store(atomic<_Tp>* __o, _Tp __d) _NOEXCEPT 1166{ 1167 __o->store(__d); 1168} 1169 1170// atomic_store_explicit 1171 1172template <class _Tp> 1173inline _LIBCPP_INLINE_VISIBILITY 1174void 1175atomic_store_explicit(volatile atomic<_Tp>* __o, _Tp __d, memory_order __m) _NOEXCEPT 1176{ 1177 __o->store(__d, __m); 1178} 1179 1180template <class _Tp> 1181inline _LIBCPP_INLINE_VISIBILITY 1182void 1183atomic_store_explicit(atomic<_Tp>* __o, _Tp __d, memory_order __m) _NOEXCEPT 1184{ 1185 __o->store(__d, __m); 1186} 1187 1188// atomic_load 1189 1190template <class _Tp> 1191inline _LIBCPP_INLINE_VISIBILITY 1192_Tp 1193atomic_load(const volatile atomic<_Tp>* __o) _NOEXCEPT 1194{ 1195 return __o->load(); 1196} 1197 1198template <class _Tp> 1199inline _LIBCPP_INLINE_VISIBILITY 1200_Tp 1201atomic_load(const atomic<_Tp>* __o) _NOEXCEPT 1202{ 1203 return __o->load(); 1204} 1205 1206// atomic_load_explicit 1207 1208template <class _Tp> 1209inline _LIBCPP_INLINE_VISIBILITY 1210_Tp 1211atomic_load_explicit(const volatile atomic<_Tp>* __o, memory_order __m) _NOEXCEPT 1212{ 1213 return __o->load(__m); 1214} 1215 1216template <class _Tp> 1217inline _LIBCPP_INLINE_VISIBILITY 1218_Tp 1219atomic_load_explicit(const atomic<_Tp>* __o, memory_order __m) _NOEXCEPT 1220{ 1221 return __o->load(__m); 1222} 1223 1224// atomic_exchange 1225 1226template <class _Tp> 1227inline _LIBCPP_INLINE_VISIBILITY 1228_Tp 1229atomic_exchange(volatile atomic<_Tp>* __o, _Tp __d) _NOEXCEPT 1230{ 1231 return __o->exchange(__d); 1232} 1233 1234template <class _Tp> 1235inline _LIBCPP_INLINE_VISIBILITY 1236_Tp 1237atomic_exchange(atomic<_Tp>* __o, _Tp __d) _NOEXCEPT 1238{ 1239 return __o->exchange(__d); 1240} 1241 1242// atomic_exchange_explicit 1243 1244template <class _Tp> 1245inline _LIBCPP_INLINE_VISIBILITY 1246_Tp 1247atomic_exchange_explicit(volatile atomic<_Tp>* __o, _Tp __d, memory_order __m) _NOEXCEPT 1248{ 1249 return __o->exchange(__d, __m); 1250} 1251 1252template <class _Tp> 1253inline _LIBCPP_INLINE_VISIBILITY 1254_Tp 1255atomic_exchange_explicit(atomic<_Tp>* __o, _Tp __d, memory_order __m) _NOEXCEPT 1256{ 1257 return __o->exchange(__d, __m); 1258} 1259 1260// atomic_compare_exchange_weak 1261 1262template <class _Tp> 1263inline _LIBCPP_INLINE_VISIBILITY 1264bool 1265atomic_compare_exchange_weak(volatile atomic<_Tp>* __o, _Tp* __e, _Tp __d) _NOEXCEPT 1266{ 1267 return __o->compare_exchange_weak(*__e, __d); 1268} 1269 1270template <class _Tp> 1271inline _LIBCPP_INLINE_VISIBILITY 1272bool 1273atomic_compare_exchange_weak(atomic<_Tp>* __o, _Tp* __e, _Tp __d) _NOEXCEPT 1274{ 1275 return __o->compare_exchange_weak(*__e, __d); 1276} 1277 1278// atomic_compare_exchange_strong 1279 1280template <class _Tp> 1281inline _LIBCPP_INLINE_VISIBILITY 1282bool 1283atomic_compare_exchange_strong(volatile atomic<_Tp>* __o, _Tp* __e, _Tp __d) _NOEXCEPT 1284{ 1285 return __o->compare_exchange_strong(*__e, __d); 1286} 1287 1288template <class _Tp> 1289inline _LIBCPP_INLINE_VISIBILITY 1290bool 1291atomic_compare_exchange_strong(atomic<_Tp>* __o, _Tp* __e, _Tp __d) _NOEXCEPT 1292{ 1293 return __o->compare_exchange_strong(*__e, __d); 1294} 1295 1296// atomic_compare_exchange_weak_explicit 1297 1298template <class _Tp> 1299inline _LIBCPP_INLINE_VISIBILITY 1300bool 1301atomic_compare_exchange_weak_explicit(volatile atomic<_Tp>* __o, _Tp* __e, 1302 _Tp __d, 1303 memory_order __s, memory_order __f) _NOEXCEPT 1304{ 1305 return __o->compare_exchange_weak(*__e, __d, __s, __f); 1306} 1307 1308template <class _Tp> 1309inline _LIBCPP_INLINE_VISIBILITY 1310bool 1311atomic_compare_exchange_weak_explicit(atomic<_Tp>* __o, _Tp* __e, _Tp __d, 1312 memory_order __s, memory_order __f) _NOEXCEPT 1313{ 1314 return __o->compare_exchange_weak(*__e, __d, __s, __f); 1315} 1316 1317// atomic_compare_exchange_strong_explicit 1318 1319template <class _Tp> 1320inline _LIBCPP_INLINE_VISIBILITY 1321bool 1322atomic_compare_exchange_strong_explicit(volatile atomic<_Tp>* __o, 1323 _Tp* __e, _Tp __d, 1324 memory_order __s, memory_order __f) _NOEXCEPT 1325{ 1326 return __o->compare_exchange_strong(*__e, __d, __s, __f); 1327} 1328 1329template <class _Tp> 1330inline _LIBCPP_INLINE_VISIBILITY 1331bool 1332atomic_compare_exchange_strong_explicit(atomic<_Tp>* __o, _Tp* __e, 1333 _Tp __d, 1334 memory_order __s, memory_order __f) _NOEXCEPT 1335{ 1336 return __o->compare_exchange_strong(*__e, __d, __s, __f); 1337} 1338 1339// atomic_fetch_add 1340 1341template <class _Tp> 1342inline _LIBCPP_INLINE_VISIBILITY 1343typename enable_if 1344< 1345 is_integral<_Tp>::value && !is_same<_Tp, bool>::value, 1346 _Tp 1347>::type 1348atomic_fetch_add(volatile atomic<_Tp>* __o, _Tp __op) _NOEXCEPT 1349{ 1350 return __o->fetch_add(__op); 1351} 1352 1353template <class _Tp> 1354inline _LIBCPP_INLINE_VISIBILITY 1355typename enable_if 1356< 1357 is_integral<_Tp>::value && !is_same<_Tp, bool>::value, 1358 _Tp 1359>::type 1360atomic_fetch_add(atomic<_Tp>* __o, _Tp __op) _NOEXCEPT 1361{ 1362 return __o->fetch_add(__op); 1363} 1364 1365template <class _Tp> 1366inline _LIBCPP_INLINE_VISIBILITY 1367_Tp* 1368atomic_fetch_add(volatile atomic<_Tp*>* __o, ptrdiff_t __op) _NOEXCEPT 1369{ 1370 return __o->fetch_add(__op); 1371} 1372 1373template <class _Tp> 1374inline _LIBCPP_INLINE_VISIBILITY 1375_Tp* 1376atomic_fetch_add(atomic<_Tp*>* __o, ptrdiff_t __op) _NOEXCEPT 1377{ 1378 return __o->fetch_add(__op); 1379} 1380 1381// atomic_fetch_add_explicit 1382 1383template <class _Tp> 1384inline _LIBCPP_INLINE_VISIBILITY 1385typename enable_if 1386< 1387 is_integral<_Tp>::value && !is_same<_Tp, bool>::value, 1388 _Tp 1389>::type 1390atomic_fetch_add_explicit(volatile atomic<_Tp>* __o, _Tp __op, memory_order __m) _NOEXCEPT 1391{ 1392 return __o->fetch_add(__op, __m); 1393} 1394 1395template <class _Tp> 1396inline _LIBCPP_INLINE_VISIBILITY 1397typename enable_if 1398< 1399 is_integral<_Tp>::value && !is_same<_Tp, bool>::value, 1400 _Tp 1401>::type 1402atomic_fetch_add_explicit(atomic<_Tp>* __o, _Tp __op, memory_order __m) _NOEXCEPT 1403{ 1404 return __o->fetch_add(__op, __m); 1405} 1406 1407template <class _Tp> 1408inline _LIBCPP_INLINE_VISIBILITY 1409_Tp* 1410atomic_fetch_add_explicit(volatile atomic<_Tp*>* __o, ptrdiff_t __op, 1411 memory_order __m) _NOEXCEPT 1412{ 1413 return __o->fetch_add(__op, __m); 1414} 1415 1416template <class _Tp> 1417inline _LIBCPP_INLINE_VISIBILITY 1418_Tp* 1419atomic_fetch_add_explicit(atomic<_Tp*>* __o, ptrdiff_t __op, memory_order __m) _NOEXCEPT 1420{ 1421 return __o->fetch_add(__op, __m); 1422} 1423 1424// atomic_fetch_sub 1425 1426template <class _Tp> 1427inline _LIBCPP_INLINE_VISIBILITY 1428typename enable_if 1429< 1430 is_integral<_Tp>::value && !is_same<_Tp, bool>::value, 1431 _Tp 1432>::type 1433atomic_fetch_sub(volatile atomic<_Tp>* __o, _Tp __op) _NOEXCEPT 1434{ 1435 return __o->fetch_sub(__op); 1436} 1437 1438template <class _Tp> 1439inline _LIBCPP_INLINE_VISIBILITY 1440typename enable_if 1441< 1442 is_integral<_Tp>::value && !is_same<_Tp, bool>::value, 1443 _Tp 1444>::type 1445atomic_fetch_sub(atomic<_Tp>* __o, _Tp __op) _NOEXCEPT 1446{ 1447 return __o->fetch_sub(__op); 1448} 1449 1450template <class _Tp> 1451inline _LIBCPP_INLINE_VISIBILITY 1452_Tp* 1453atomic_fetch_sub(volatile atomic<_Tp*>* __o, ptrdiff_t __op) _NOEXCEPT 1454{ 1455 return __o->fetch_sub(__op); 1456} 1457 1458template <class _Tp> 1459inline _LIBCPP_INLINE_VISIBILITY 1460_Tp* 1461atomic_fetch_sub(atomic<_Tp*>* __o, ptrdiff_t __op) _NOEXCEPT 1462{ 1463 return __o->fetch_sub(__op); 1464} 1465 1466// atomic_fetch_sub_explicit 1467 1468template <class _Tp> 1469inline _LIBCPP_INLINE_VISIBILITY 1470typename enable_if 1471< 1472 is_integral<_Tp>::value && !is_same<_Tp, bool>::value, 1473 _Tp 1474>::type 1475atomic_fetch_sub_explicit(volatile atomic<_Tp>* __o, _Tp __op, memory_order __m) _NOEXCEPT 1476{ 1477 return __o->fetch_sub(__op, __m); 1478} 1479 1480template <class _Tp> 1481inline _LIBCPP_INLINE_VISIBILITY 1482typename enable_if 1483< 1484 is_integral<_Tp>::value && !is_same<_Tp, bool>::value, 1485 _Tp 1486>::type 1487atomic_fetch_sub_explicit(atomic<_Tp>* __o, _Tp __op, memory_order __m) _NOEXCEPT 1488{ 1489 return __o->fetch_sub(__op, __m); 1490} 1491 1492template <class _Tp> 1493inline _LIBCPP_INLINE_VISIBILITY 1494_Tp* 1495atomic_fetch_sub_explicit(volatile atomic<_Tp*>* __o, ptrdiff_t __op, 1496 memory_order __m) _NOEXCEPT 1497{ 1498 return __o->fetch_sub(__op, __m); 1499} 1500 1501template <class _Tp> 1502inline _LIBCPP_INLINE_VISIBILITY 1503_Tp* 1504atomic_fetch_sub_explicit(atomic<_Tp*>* __o, ptrdiff_t __op, memory_order __m) _NOEXCEPT 1505{ 1506 return __o->fetch_sub(__op, __m); 1507} 1508 1509// atomic_fetch_and 1510 1511template <class _Tp> 1512inline _LIBCPP_INLINE_VISIBILITY 1513typename enable_if 1514< 1515 is_integral<_Tp>::value && !is_same<_Tp, bool>::value, 1516 _Tp 1517>::type 1518atomic_fetch_and(volatile atomic<_Tp>* __o, _Tp __op) _NOEXCEPT 1519{ 1520 return __o->fetch_and(__op); 1521} 1522 1523template <class _Tp> 1524inline _LIBCPP_INLINE_VISIBILITY 1525typename enable_if 1526< 1527 is_integral<_Tp>::value && !is_same<_Tp, bool>::value, 1528 _Tp 1529>::type 1530atomic_fetch_and(atomic<_Tp>* __o, _Tp __op) _NOEXCEPT 1531{ 1532 return __o->fetch_and(__op); 1533} 1534 1535// atomic_fetch_and_explicit 1536 1537template <class _Tp> 1538inline _LIBCPP_INLINE_VISIBILITY 1539typename enable_if 1540< 1541 is_integral<_Tp>::value && !is_same<_Tp, bool>::value, 1542 _Tp 1543>::type 1544atomic_fetch_and_explicit(volatile atomic<_Tp>* __o, _Tp __op, memory_order __m) _NOEXCEPT 1545{ 1546 return __o->fetch_and(__op, __m); 1547} 1548 1549template <class _Tp> 1550inline _LIBCPP_INLINE_VISIBILITY 1551typename enable_if 1552< 1553 is_integral<_Tp>::value && !is_same<_Tp, bool>::value, 1554 _Tp 1555>::type 1556atomic_fetch_and_explicit(atomic<_Tp>* __o, _Tp __op, memory_order __m) _NOEXCEPT 1557{ 1558 return __o->fetch_and(__op, __m); 1559} 1560 1561// atomic_fetch_or 1562 1563template <class _Tp> 1564inline _LIBCPP_INLINE_VISIBILITY 1565typename enable_if 1566< 1567 is_integral<_Tp>::value && !is_same<_Tp, bool>::value, 1568 _Tp 1569>::type 1570atomic_fetch_or(volatile atomic<_Tp>* __o, _Tp __op) _NOEXCEPT 1571{ 1572 return __o->fetch_or(__op); 1573} 1574 1575template <class _Tp> 1576inline _LIBCPP_INLINE_VISIBILITY 1577typename enable_if 1578< 1579 is_integral<_Tp>::value && !is_same<_Tp, bool>::value, 1580 _Tp 1581>::type 1582atomic_fetch_or(atomic<_Tp>* __o, _Tp __op) _NOEXCEPT 1583{ 1584 return __o->fetch_or(__op); 1585} 1586 1587// atomic_fetch_or_explicit 1588 1589template <class _Tp> 1590inline _LIBCPP_INLINE_VISIBILITY 1591typename enable_if 1592< 1593 is_integral<_Tp>::value && !is_same<_Tp, bool>::value, 1594 _Tp 1595>::type 1596atomic_fetch_or_explicit(volatile atomic<_Tp>* __o, _Tp __op, memory_order __m) _NOEXCEPT 1597{ 1598 return __o->fetch_or(__op, __m); 1599} 1600 1601template <class _Tp> 1602inline _LIBCPP_INLINE_VISIBILITY 1603typename enable_if 1604< 1605 is_integral<_Tp>::value && !is_same<_Tp, bool>::value, 1606 _Tp 1607>::type 1608atomic_fetch_or_explicit(atomic<_Tp>* __o, _Tp __op, memory_order __m) _NOEXCEPT 1609{ 1610 return __o->fetch_or(__op, __m); 1611} 1612 1613// atomic_fetch_xor 1614 1615template <class _Tp> 1616inline _LIBCPP_INLINE_VISIBILITY 1617typename enable_if 1618< 1619 is_integral<_Tp>::value && !is_same<_Tp, bool>::value, 1620 _Tp 1621>::type 1622atomic_fetch_xor(volatile atomic<_Tp>* __o, _Tp __op) _NOEXCEPT 1623{ 1624 return __o->fetch_xor(__op); 1625} 1626 1627template <class _Tp> 1628inline _LIBCPP_INLINE_VISIBILITY 1629typename enable_if 1630< 1631 is_integral<_Tp>::value && !is_same<_Tp, bool>::value, 1632 _Tp 1633>::type 1634atomic_fetch_xor(atomic<_Tp>* __o, _Tp __op) _NOEXCEPT 1635{ 1636 return __o->fetch_xor(__op); 1637} 1638 1639// atomic_fetch_xor_explicit 1640 1641template <class _Tp> 1642inline _LIBCPP_INLINE_VISIBILITY 1643typename enable_if 1644< 1645 is_integral<_Tp>::value && !is_same<_Tp, bool>::value, 1646 _Tp 1647>::type 1648atomic_fetch_xor_explicit(volatile atomic<_Tp>* __o, _Tp __op, memory_order __m) _NOEXCEPT 1649{ 1650 return __o->fetch_xor(__op, __m); 1651} 1652 1653template <class _Tp> 1654inline _LIBCPP_INLINE_VISIBILITY 1655typename enable_if 1656< 1657 is_integral<_Tp>::value && !is_same<_Tp, bool>::value, 1658 _Tp 1659>::type 1660atomic_fetch_xor_explicit(atomic<_Tp>* __o, _Tp __op, memory_order __m) _NOEXCEPT 1661{ 1662 return __o->fetch_xor(__op, __m); 1663} 1664 1665// flag type and operations 1666 1667typedef struct atomic_flag 1668{ 1669 _Atomic(bool) __a_; 1670 1671 _LIBCPP_INLINE_VISIBILITY 1672 bool test_and_set(memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT 1673 {return __c11_atomic_exchange(&__a_, true, __m);} 1674 _LIBCPP_INLINE_VISIBILITY 1675 bool test_and_set(memory_order __m = memory_order_seq_cst) _NOEXCEPT 1676 {return __c11_atomic_exchange(&__a_, true, __m);} 1677 _LIBCPP_INLINE_VISIBILITY 1678 void clear(memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT 1679 {__c11_atomic_store(&__a_, false, __m);} 1680 _LIBCPP_INLINE_VISIBILITY 1681 void clear(memory_order __m = memory_order_seq_cst) _NOEXCEPT 1682 {__c11_atomic_store(&__a_, false, __m);} 1683 1684 _LIBCPP_INLINE_VISIBILITY 1685#ifndef _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS 1686 atomic_flag() _NOEXCEPT = default; 1687#else 1688 atomic_flag() _NOEXCEPT : __a_() {} 1689#endif // _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS 1690 1691 _LIBCPP_INLINE_VISIBILITY 1692 atomic_flag(bool __b) _NOEXCEPT : __a_(__b) {} 1693 1694#ifndef _LIBCPP_HAS_NO_DELETED_FUNCTIONS 1695 atomic_flag(const atomic_flag&) = delete; 1696 atomic_flag& operator=(const atomic_flag&) = delete; 1697 atomic_flag& operator=(const atomic_flag&) volatile = delete; 1698#else // _LIBCPP_HAS_NO_DELETED_FUNCTIONS 1699private: 1700 atomic_flag(const atomic_flag&); 1701 atomic_flag& operator=(const atomic_flag&); 1702 atomic_flag& operator=(const atomic_flag&) volatile; 1703#endif // _LIBCPP_HAS_NO_DELETED_FUNCTIONS 1704} atomic_flag; 1705 1706inline _LIBCPP_INLINE_VISIBILITY 1707bool 1708atomic_flag_test_and_set(volatile atomic_flag* __o) _NOEXCEPT 1709{ 1710 return __o->test_and_set(); 1711} 1712 1713inline _LIBCPP_INLINE_VISIBILITY 1714bool 1715atomic_flag_test_and_set(atomic_flag* __o) _NOEXCEPT 1716{ 1717 return __o->test_and_set(); 1718} 1719 1720inline _LIBCPP_INLINE_VISIBILITY 1721bool 1722atomic_flag_test_and_set_explicit(volatile atomic_flag* __o, memory_order __m) _NOEXCEPT 1723{ 1724 return __o->test_and_set(__m); 1725} 1726 1727inline _LIBCPP_INLINE_VISIBILITY 1728bool 1729atomic_flag_test_and_set_explicit(atomic_flag* __o, memory_order __m) _NOEXCEPT 1730{ 1731 return __o->test_and_set(__m); 1732} 1733 1734inline _LIBCPP_INLINE_VISIBILITY 1735void 1736atomic_flag_clear(volatile atomic_flag* __o) _NOEXCEPT 1737{ 1738 __o->clear(); 1739} 1740 1741inline _LIBCPP_INLINE_VISIBILITY 1742void 1743atomic_flag_clear(atomic_flag* __o) _NOEXCEPT 1744{ 1745 __o->clear(); 1746} 1747 1748inline _LIBCPP_INLINE_VISIBILITY 1749void 1750atomic_flag_clear_explicit(volatile atomic_flag* __o, memory_order __m) _NOEXCEPT 1751{ 1752 __o->clear(__m); 1753} 1754 1755inline _LIBCPP_INLINE_VISIBILITY 1756void 1757atomic_flag_clear_explicit(atomic_flag* __o, memory_order __m) _NOEXCEPT 1758{ 1759 __o->clear(__m); 1760} 1761 1762// fences 1763 1764inline _LIBCPP_INLINE_VISIBILITY 1765void 1766atomic_thread_fence(memory_order __m) _NOEXCEPT 1767{ 1768 __c11_atomic_thread_fence(__m); 1769} 1770 1771inline _LIBCPP_INLINE_VISIBILITY 1772void 1773atomic_signal_fence(memory_order __m) _NOEXCEPT 1774{ 1775 __c11_atomic_signal_fence(__m); 1776} 1777 1778// Atomics for standard typedef types 1779 1780typedef atomic<bool> atomic_bool; 1781typedef atomic<char> atomic_char; 1782typedef atomic<signed char> atomic_schar; 1783typedef atomic<unsigned char> atomic_uchar; 1784typedef atomic<short> atomic_short; 1785typedef atomic<unsigned short> atomic_ushort; 1786typedef atomic<int> atomic_int; 1787typedef atomic<unsigned int> atomic_uint; 1788typedef atomic<long> atomic_long; 1789typedef atomic<unsigned long> atomic_ulong; 1790typedef atomic<long long> atomic_llong; 1791typedef atomic<unsigned long long> atomic_ullong; 1792typedef atomic<char16_t> atomic_char16_t; 1793typedef atomic<char32_t> atomic_char32_t; 1794typedef atomic<wchar_t> atomic_wchar_t; 1795 1796typedef atomic<int_least8_t> atomic_int_least8_t; 1797typedef atomic<uint_least8_t> atomic_uint_least8_t; 1798typedef atomic<int_least16_t> atomic_int_least16_t; 1799typedef atomic<uint_least16_t> atomic_uint_least16_t; 1800typedef atomic<int_least32_t> atomic_int_least32_t; 1801typedef atomic<uint_least32_t> atomic_uint_least32_t; 1802typedef atomic<int_least64_t> atomic_int_least64_t; 1803typedef atomic<uint_least64_t> atomic_uint_least64_t; 1804 1805typedef atomic<int_fast8_t> atomic_int_fast8_t; 1806typedef atomic<uint_fast8_t> atomic_uint_fast8_t; 1807typedef atomic<int_fast16_t> atomic_int_fast16_t; 1808typedef atomic<uint_fast16_t> atomic_uint_fast16_t; 1809typedef atomic<int_fast32_t> atomic_int_fast32_t; 1810typedef atomic<uint_fast32_t> atomic_uint_fast32_t; 1811typedef atomic<int_fast64_t> atomic_int_fast64_t; 1812typedef atomic<uint_fast64_t> atomic_uint_fast64_t; 1813 1814typedef atomic<intptr_t> atomic_intptr_t; 1815typedef atomic<uintptr_t> atomic_uintptr_t; 1816typedef atomic<size_t> atomic_size_t; 1817typedef atomic<ptrdiff_t> atomic_ptrdiff_t; 1818typedef atomic<intmax_t> atomic_intmax_t; 1819typedef atomic<uintmax_t> atomic_uintmax_t; 1820 1821#define ATOMIC_FLAG_INIT {false} 1822#define ATOMIC_VAR_INIT(__v) {__v} 1823 1824_LIBCPP_END_NAMESPACE_STD 1825 1826#endif // _LIBCPP_ATOMIC 1827