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