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#endif 539#if !defined(_LIBCPP_HAS_C_ATOMIC_IMP) && !defined(_LIBCPP_HAS_GCC_ATOMIC_IMP) 540#error <atomic> is not implemented 541#endif 542 543_LIBCPP_BEGIN_NAMESPACE_STD 544 545typedef enum memory_order 546{ 547 memory_order_relaxed, memory_order_consume, memory_order_acquire, 548 memory_order_release, memory_order_acq_rel, memory_order_seq_cst 549} memory_order; 550 551#if defined(_LIBCPP_HAS_GCC_ATOMIC_IMP) 552namespace __gcc_atomic { 553template <typename _Tp> 554struct __gcc_atomic_t { 555 __gcc_atomic_t() _NOEXCEPT {} 556 _LIBCPP_CONSTEXPR explicit __gcc_atomic_t(_Tp value) _NOEXCEPT 557 : __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 636template <typename _Tp> 637static inline void __c11_atomic_store(volatile _Atomic(_Tp)* __a, _Tp __val, 638 memory_order __order) { 639 return __atomic_store(&__a->__a_value, &__val, 640 __gcc_atomic::__to_gcc_order(__order)); 641} 642 643template <typename _Tp> 644static inline void __c11_atomic_store(_Atomic(_Tp)* __a, _Tp __val, 645 memory_order __order) { 646 __atomic_store(&__a->__a_value, &__val, 647 __gcc_atomic::__to_gcc_order(__order)); 648} 649 650template <typename _Tp> 651static inline _Tp __c11_atomic_load(volatile _Atomic(_Tp)* __a, 652 memory_order __order) { 653 _Tp __ret; 654 __atomic_load(&__a->__a_value, &__ret, 655 __gcc_atomic::__to_gcc_order(__order)); 656 return __ret; 657} 658 659template <typename _Tp> 660static inline _Tp __c11_atomic_load(_Atomic(_Tp)* __a, memory_order __order) { 661 _Tp __ret; 662 __atomic_load(&__a->__a_value, &__ret, 663 __gcc_atomic::__to_gcc_order(__order)); 664 return __ret; 665} 666 667template <typename _Tp> 668static inline _Tp __c11_atomic_exchange(volatile _Atomic(_Tp)* __a, 669 _Tp __value, memory_order __order) { 670 _Tp __ret; 671 __atomic_exchange(&__a->__a_value, &__value, &__ret, 672 __gcc_atomic::__to_gcc_order(__order)); 673 return __ret; 674} 675 676template <typename _Tp> 677static inline _Tp __c11_atomic_exchange(_Atomic(_Tp)* __a, _Tp __value, 678 memory_order __order) { 679 _Tp __ret; 680 __atomic_exchange(&__a->__a_value, &__value, &__ret, 681 __gcc_atomic::__to_gcc_order(__order)); 682 return __ret; 683} 684 685template <typename _Tp> 686static inline bool __c11_atomic_compare_exchange_strong( 687 volatile _Atomic(_Tp)* __a, _Tp* __expected, _Tp __value, 688 memory_order __success, memory_order __failure) { 689 return __atomic_compare_exchange(&__a->__a_value, __expected, &__value, 690 false, 691 __gcc_atomic::__to_gcc_order(__success), 692 __gcc_atomic::__to_gcc_failure_order(__failure)); 693} 694 695template <typename _Tp> 696static inline bool __c11_atomic_compare_exchange_strong( 697 _Atomic(_Tp)* __a, _Tp* __expected, _Tp __value, memory_order __success, 698 memory_order __failure) { 699 return __atomic_compare_exchange(&__a->__a_value, __expected, &__value, 700 false, 701 __gcc_atomic::__to_gcc_order(__success), 702 __gcc_atomic::__to_gcc_failure_order(__failure)); 703} 704 705template <typename _Tp> 706static inline bool __c11_atomic_compare_exchange_weak( 707 volatile _Atomic(_Tp)* __a, _Tp* __expected, _Tp __value, 708 memory_order __success, memory_order __failure) { 709 return __atomic_compare_exchange(&__a->__a_value, __expected, &__value, 710 true, 711 __gcc_atomic::__to_gcc_order(__success), 712 __gcc_atomic::__to_gcc_failure_order(__failure)); 713} 714 715template <typename _Tp> 716static inline bool __c11_atomic_compare_exchange_weak( 717 _Atomic(_Tp)* __a, _Tp* __expected, _Tp __value, memory_order __success, 718 memory_order __failure) { 719 return __atomic_compare_exchange(&__a->__a_value, __expected, &__value, 720 true, 721 __gcc_atomic::__to_gcc_order(__success), 722 __gcc_atomic::__to_gcc_failure_order(__failure)); 723} 724 725template <typename _Tp> 726struct __skip_amt { enum {value = 1}; }; 727 728template <typename _Tp> 729struct __skip_amt<_Tp*> { enum {value = sizeof(_Tp)}; }; 730 731// FIXME: Haven't figured out what the spec says about using arrays with 732// atomic_fetch_add. Force a failure rather than creating bad behavior. 733template <typename _Tp> 734struct __skip_amt<_Tp[]> { }; 735template <typename _Tp, int n> 736struct __skip_amt<_Tp[n]> { }; 737 738template <typename _Tp, typename _Td> 739static inline _Tp __c11_atomic_fetch_add(volatile _Atomic(_Tp)* __a, 740 _Td __delta, memory_order __order) { 741 return __atomic_fetch_add(&__a->__a_value, __delta * __skip_amt<_Tp>::value, 742 __gcc_atomic::__to_gcc_order(__order)); 743} 744 745template <typename _Tp, typename _Td> 746static inline _Tp __c11_atomic_fetch_add(_Atomic(_Tp)* __a, _Td __delta, 747 memory_order __order) { 748 return __atomic_fetch_add(&__a->__a_value, __delta * __skip_amt<_Tp>::value, 749 __gcc_atomic::__to_gcc_order(__order)); 750} 751 752template <typename _Tp, typename _Td> 753static inline _Tp __c11_atomic_fetch_sub(volatile _Atomic(_Tp)* __a, 754 _Td __delta, memory_order __order) { 755 return __atomic_fetch_sub(&__a->__a_value, __delta * __skip_amt<_Tp>::value, 756 __gcc_atomic::__to_gcc_order(__order)); 757} 758 759template <typename _Tp, typename _Td> 760static inline _Tp __c11_atomic_fetch_sub(_Atomic(_Tp)* __a, _Td __delta, 761 memory_order __order) { 762 return __atomic_fetch_sub(&__a->__a_value, __delta * __skip_amt<_Tp>::value, 763 __gcc_atomic::__to_gcc_order(__order)); 764} 765 766template <typename _Tp> 767static inline _Tp __c11_atomic_fetch_and(volatile _Atomic(_Tp)* __a, 768 _Tp __pattern, memory_order __order) { 769 return __atomic_fetch_and(&__a->__a_value, __pattern, 770 __gcc_atomic::__to_gcc_order(__order)); 771} 772 773template <typename _Tp> 774static inline _Tp __c11_atomic_fetch_and(_Atomic(_Tp)* __a, 775 _Tp __pattern, memory_order __order) { 776 return __atomic_fetch_and(&__a->__a_value, __pattern, 777 __gcc_atomic::__to_gcc_order(__order)); 778} 779 780template <typename _Tp> 781static inline _Tp __c11_atomic_fetch_or(volatile _Atomic(_Tp)* __a, 782 _Tp __pattern, memory_order __order) { 783 return __atomic_fetch_or(&__a->__a_value, __pattern, 784 __gcc_atomic::__to_gcc_order(__order)); 785} 786 787template <typename _Tp> 788static inline _Tp __c11_atomic_fetch_or(_Atomic(_Tp)* __a, _Tp __pattern, 789 memory_order __order) { 790 return __atomic_fetch_or(&__a->__a_value, __pattern, 791 __gcc_atomic::__to_gcc_order(__order)); 792} 793 794template <typename _Tp> 795static inline _Tp __c11_atomic_fetch_xor(volatile _Atomic(_Tp)* __a, 796 _Tp __pattern, memory_order __order) { 797 return __atomic_fetch_xor(&__a->__a_value, __pattern, 798 __gcc_atomic::__to_gcc_order(__order)); 799} 800 801template <typename _Tp> 802static inline _Tp __c11_atomic_fetch_xor(_Atomic(_Tp)* __a, _Tp __pattern, 803 memory_order __order) { 804 return __atomic_fetch_xor(&__a->__a_value, __pattern, 805 __gcc_atomic::__to_gcc_order(__order)); 806} 807#endif // _LIBCPP_HAS_GCC_ATOMIC_IMP 808 809template <class _Tp> 810inline _LIBCPP_INLINE_VISIBILITY 811_Tp 812kill_dependency(_Tp __y) _NOEXCEPT 813{ 814 return __y; 815} 816 817// general atomic<T> 818 819template <class _Tp, bool = is_integral<_Tp>::value && !is_same<_Tp, bool>::value> 820struct __atomic_base // false 821{ 822 mutable _Atomic(_Tp) __a_; 823 824 _LIBCPP_INLINE_VISIBILITY 825 bool is_lock_free() const volatile _NOEXCEPT 826 { 827#if defined(_LIBCPP_HAS_C_ATOMIC_IMP) 828 return __c11_atomic_is_lock_free(sizeof(_Tp)); 829#else 830 return __atomic_is_lock_free(sizeof(_Tp), 0); 831#endif 832 } 833 _LIBCPP_INLINE_VISIBILITY 834 bool is_lock_free() const _NOEXCEPT 835 {return static_cast<__atomic_base const volatile*>(this)->is_lock_free();} 836 _LIBCPP_INLINE_VISIBILITY 837 void store(_Tp __d, memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT 838 {__c11_atomic_store(&__a_, __d, __m);} 839 _LIBCPP_INLINE_VISIBILITY 840 void store(_Tp __d, memory_order __m = memory_order_seq_cst) _NOEXCEPT 841 {__c11_atomic_store(&__a_, __d, __m);} 842 _LIBCPP_INLINE_VISIBILITY 843 _Tp load(memory_order __m = memory_order_seq_cst) const volatile _NOEXCEPT 844 {return __c11_atomic_load(&__a_, __m);} 845 _LIBCPP_INLINE_VISIBILITY 846 _Tp load(memory_order __m = memory_order_seq_cst) const _NOEXCEPT 847 {return __c11_atomic_load(&__a_, __m);} 848 _LIBCPP_INLINE_VISIBILITY 849 operator _Tp() const volatile _NOEXCEPT {return load();} 850 _LIBCPP_INLINE_VISIBILITY 851 operator _Tp() const _NOEXCEPT {return load();} 852 _LIBCPP_INLINE_VISIBILITY 853 _Tp exchange(_Tp __d, memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT 854 {return __c11_atomic_exchange(&__a_, __d, __m);} 855 _LIBCPP_INLINE_VISIBILITY 856 _Tp exchange(_Tp __d, memory_order __m = memory_order_seq_cst) _NOEXCEPT 857 {return __c11_atomic_exchange(&__a_, __d, __m);} 858 _LIBCPP_INLINE_VISIBILITY 859 bool compare_exchange_weak(_Tp& __e, _Tp __d, 860 memory_order __s, memory_order __f) volatile _NOEXCEPT 861 {return __c11_atomic_compare_exchange_weak(&__a_, &__e, __d, __s, __f);} 862 _LIBCPP_INLINE_VISIBILITY 863 bool compare_exchange_weak(_Tp& __e, _Tp __d, 864 memory_order __s, memory_order __f) _NOEXCEPT 865 {return __c11_atomic_compare_exchange_weak(&__a_, &__e, __d, __s, __f);} 866 _LIBCPP_INLINE_VISIBILITY 867 bool compare_exchange_strong(_Tp& __e, _Tp __d, 868 memory_order __s, memory_order __f) volatile _NOEXCEPT 869 {return __c11_atomic_compare_exchange_strong(&__a_, &__e, __d, __s, __f);} 870 _LIBCPP_INLINE_VISIBILITY 871 bool compare_exchange_strong(_Tp& __e, _Tp __d, 872 memory_order __s, memory_order __f) _NOEXCEPT 873 {return __c11_atomic_compare_exchange_strong(&__a_, &__e, __d, __s, __f);} 874 _LIBCPP_INLINE_VISIBILITY 875 bool compare_exchange_weak(_Tp& __e, _Tp __d, 876 memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT 877 {return __c11_atomic_compare_exchange_weak(&__a_, &__e, __d, __m, __m);} 878 _LIBCPP_INLINE_VISIBILITY 879 bool compare_exchange_weak(_Tp& __e, _Tp __d, 880 memory_order __m = memory_order_seq_cst) _NOEXCEPT 881 {return __c11_atomic_compare_exchange_weak(&__a_, &__e, __d, __m, __m);} 882 _LIBCPP_INLINE_VISIBILITY 883 bool compare_exchange_strong(_Tp& __e, _Tp __d, 884 memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT 885 {return __c11_atomic_compare_exchange_strong(&__a_, &__e, __d, __m, __m);} 886 _LIBCPP_INLINE_VISIBILITY 887 bool compare_exchange_strong(_Tp& __e, _Tp __d, 888 memory_order __m = memory_order_seq_cst) _NOEXCEPT 889 {return __c11_atomic_compare_exchange_strong(&__a_, &__e, __d, __m, __m);} 890 891 _LIBCPP_INLINE_VISIBILITY 892#ifndef _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS 893 __atomic_base() _NOEXCEPT = default; 894#else 895 __atomic_base() _NOEXCEPT : __a_() {} 896#endif // _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS 897 898 _LIBCPP_INLINE_VISIBILITY 899 _LIBCPP_CONSTEXPR __atomic_base(_Tp __d) _NOEXCEPT : __a_(__d) {} 900#ifndef _LIBCPP_HAS_NO_DELETED_FUNCTIONS 901 __atomic_base(const __atomic_base&) = delete; 902 __atomic_base& operator=(const __atomic_base&) = delete; 903 __atomic_base& operator=(const __atomic_base&) volatile = delete; 904#else // _LIBCPP_HAS_NO_DELETED_FUNCTIONS 905private: 906 __atomic_base(const __atomic_base&); 907 __atomic_base& operator=(const __atomic_base&); 908 __atomic_base& operator=(const __atomic_base&) volatile; 909#endif // _LIBCPP_HAS_NO_DELETED_FUNCTIONS 910}; 911 912// atomic<Integral> 913 914template <class _Tp> 915struct __atomic_base<_Tp, true> 916 : public __atomic_base<_Tp, false> 917{ 918 typedef __atomic_base<_Tp, false> __base; 919 _LIBCPP_INLINE_VISIBILITY 920 __atomic_base() _NOEXCEPT _LIBCPP_DEFAULT 921 _LIBCPP_INLINE_VISIBILITY 922 _LIBCPP_CONSTEXPR __atomic_base(_Tp __d) _NOEXCEPT : __base(__d) {} 923 924 _LIBCPP_INLINE_VISIBILITY 925 _Tp fetch_add(_Tp __op, memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT 926 {return __c11_atomic_fetch_add(&this->__a_, __op, __m);} 927 _LIBCPP_INLINE_VISIBILITY 928 _Tp fetch_add(_Tp __op, memory_order __m = memory_order_seq_cst) _NOEXCEPT 929 {return __c11_atomic_fetch_add(&this->__a_, __op, __m);} 930 _LIBCPP_INLINE_VISIBILITY 931 _Tp fetch_sub(_Tp __op, memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT 932 {return __c11_atomic_fetch_sub(&this->__a_, __op, __m);} 933 _LIBCPP_INLINE_VISIBILITY 934 _Tp fetch_sub(_Tp __op, memory_order __m = memory_order_seq_cst) _NOEXCEPT 935 {return __c11_atomic_fetch_sub(&this->__a_, __op, __m);} 936 _LIBCPP_INLINE_VISIBILITY 937 _Tp fetch_and(_Tp __op, memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT 938 {return __c11_atomic_fetch_and(&this->__a_, __op, __m);} 939 _LIBCPP_INLINE_VISIBILITY 940 _Tp fetch_and(_Tp __op, memory_order __m = memory_order_seq_cst) _NOEXCEPT 941 {return __c11_atomic_fetch_and(&this->__a_, __op, __m);} 942 _LIBCPP_INLINE_VISIBILITY 943 _Tp fetch_or(_Tp __op, memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT 944 {return __c11_atomic_fetch_or(&this->__a_, __op, __m);} 945 _LIBCPP_INLINE_VISIBILITY 946 _Tp fetch_or(_Tp __op, memory_order __m = memory_order_seq_cst) _NOEXCEPT 947 {return __c11_atomic_fetch_or(&this->__a_, __op, __m);} 948 _LIBCPP_INLINE_VISIBILITY 949 _Tp fetch_xor(_Tp __op, memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT 950 {return __c11_atomic_fetch_xor(&this->__a_, __op, __m);} 951 _LIBCPP_INLINE_VISIBILITY 952 _Tp fetch_xor(_Tp __op, memory_order __m = memory_order_seq_cst) _NOEXCEPT 953 {return __c11_atomic_fetch_xor(&this->__a_, __op, __m);} 954 955 _LIBCPP_INLINE_VISIBILITY 956 _Tp operator++(int) volatile _NOEXCEPT {return fetch_add(_Tp(1));} 957 _LIBCPP_INLINE_VISIBILITY 958 _Tp operator++(int) _NOEXCEPT {return fetch_add(_Tp(1));} 959 _LIBCPP_INLINE_VISIBILITY 960 _Tp operator--(int) volatile _NOEXCEPT {return fetch_sub(_Tp(1));} 961 _LIBCPP_INLINE_VISIBILITY 962 _Tp operator--(int) _NOEXCEPT {return fetch_sub(_Tp(1));} 963 _LIBCPP_INLINE_VISIBILITY 964 _Tp operator++() volatile _NOEXCEPT {return fetch_add(_Tp(1)) + _Tp(1);} 965 _LIBCPP_INLINE_VISIBILITY 966 _Tp operator++() _NOEXCEPT {return fetch_add(_Tp(1)) + _Tp(1);} 967 _LIBCPP_INLINE_VISIBILITY 968 _Tp operator--() volatile _NOEXCEPT {return fetch_sub(_Tp(1)) - _Tp(1);} 969 _LIBCPP_INLINE_VISIBILITY 970 _Tp operator--() _NOEXCEPT {return fetch_sub(_Tp(1)) - _Tp(1);} 971 _LIBCPP_INLINE_VISIBILITY 972 _Tp operator+=(_Tp __op) volatile _NOEXCEPT {return fetch_add(__op) + __op;} 973 _LIBCPP_INLINE_VISIBILITY 974 _Tp operator+=(_Tp __op) _NOEXCEPT {return fetch_add(__op) + __op;} 975 _LIBCPP_INLINE_VISIBILITY 976 _Tp operator-=(_Tp __op) volatile _NOEXCEPT {return fetch_sub(__op) - __op;} 977 _LIBCPP_INLINE_VISIBILITY 978 _Tp operator-=(_Tp __op) _NOEXCEPT {return fetch_sub(__op) - __op;} 979 _LIBCPP_INLINE_VISIBILITY 980 _Tp operator&=(_Tp __op) volatile _NOEXCEPT {return fetch_and(__op) & __op;} 981 _LIBCPP_INLINE_VISIBILITY 982 _Tp operator&=(_Tp __op) _NOEXCEPT {return fetch_and(__op) & __op;} 983 _LIBCPP_INLINE_VISIBILITY 984 _Tp operator|=(_Tp __op) volatile _NOEXCEPT {return fetch_or(__op) | __op;} 985 _LIBCPP_INLINE_VISIBILITY 986 _Tp operator|=(_Tp __op) _NOEXCEPT {return fetch_or(__op) | __op;} 987 _LIBCPP_INLINE_VISIBILITY 988 _Tp operator^=(_Tp __op) volatile _NOEXCEPT {return fetch_xor(__op) ^ __op;} 989 _LIBCPP_INLINE_VISIBILITY 990 _Tp operator^=(_Tp __op) _NOEXCEPT {return fetch_xor(__op) ^ __op;} 991}; 992 993// atomic<T> 994 995template <class _Tp> 996struct atomic 997 : public __atomic_base<_Tp> 998{ 999 typedef __atomic_base<_Tp> __base; 1000 _LIBCPP_INLINE_VISIBILITY 1001 atomic() _NOEXCEPT _LIBCPP_DEFAULT 1002 _LIBCPP_INLINE_VISIBILITY 1003 _LIBCPP_CONSTEXPR atomic(_Tp __d) _NOEXCEPT : __base(__d) {} 1004 1005 _LIBCPP_INLINE_VISIBILITY 1006 _Tp operator=(_Tp __d) volatile _NOEXCEPT 1007 {__base::store(__d); return __d;} 1008 _LIBCPP_INLINE_VISIBILITY 1009 _Tp operator=(_Tp __d) _NOEXCEPT 1010 {__base::store(__d); return __d;} 1011}; 1012 1013// atomic<T*> 1014 1015template <class _Tp> 1016struct atomic<_Tp*> 1017 : public __atomic_base<_Tp*> 1018{ 1019 typedef __atomic_base<_Tp*> __base; 1020 _LIBCPP_INLINE_VISIBILITY 1021 atomic() _NOEXCEPT _LIBCPP_DEFAULT 1022 _LIBCPP_INLINE_VISIBILITY 1023 _LIBCPP_CONSTEXPR atomic(_Tp* __d) _NOEXCEPT : __base(__d) {} 1024 1025 _LIBCPP_INLINE_VISIBILITY 1026 _Tp* operator=(_Tp* __d) volatile _NOEXCEPT 1027 {__base::store(__d); return __d;} 1028 _LIBCPP_INLINE_VISIBILITY 1029 _Tp* operator=(_Tp* __d) _NOEXCEPT 1030 {__base::store(__d); return __d;} 1031 1032 _LIBCPP_INLINE_VISIBILITY 1033 _Tp* fetch_add(ptrdiff_t __op, memory_order __m = memory_order_seq_cst) 1034 volatile _NOEXCEPT 1035 {return __c11_atomic_fetch_add(&this->__a_, __op, __m);} 1036 _LIBCPP_INLINE_VISIBILITY 1037 _Tp* fetch_add(ptrdiff_t __op, memory_order __m = memory_order_seq_cst) _NOEXCEPT 1038 {return __c11_atomic_fetch_add(&this->__a_, __op, __m);} 1039 _LIBCPP_INLINE_VISIBILITY 1040 _Tp* fetch_sub(ptrdiff_t __op, memory_order __m = memory_order_seq_cst) 1041 volatile _NOEXCEPT 1042 {return __c11_atomic_fetch_sub(&this->__a_, __op, __m);} 1043 _LIBCPP_INLINE_VISIBILITY 1044 _Tp* fetch_sub(ptrdiff_t __op, memory_order __m = memory_order_seq_cst) _NOEXCEPT 1045 {return __c11_atomic_fetch_sub(&this->__a_, __op, __m);} 1046 1047 _LIBCPP_INLINE_VISIBILITY 1048 _Tp* operator++(int) volatile _NOEXCEPT {return fetch_add(1);} 1049 _LIBCPP_INLINE_VISIBILITY 1050 _Tp* operator++(int) _NOEXCEPT {return fetch_add(1);} 1051 _LIBCPP_INLINE_VISIBILITY 1052 _Tp* operator--(int) volatile _NOEXCEPT {return fetch_sub(1);} 1053 _LIBCPP_INLINE_VISIBILITY 1054 _Tp* operator--(int) _NOEXCEPT {return fetch_sub(1);} 1055 _LIBCPP_INLINE_VISIBILITY 1056 _Tp* operator++() volatile _NOEXCEPT {return fetch_add(1) + 1;} 1057 _LIBCPP_INLINE_VISIBILITY 1058 _Tp* operator++() _NOEXCEPT {return fetch_add(1) + 1;} 1059 _LIBCPP_INLINE_VISIBILITY 1060 _Tp* operator--() volatile _NOEXCEPT {return fetch_sub(1) - 1;} 1061 _LIBCPP_INLINE_VISIBILITY 1062 _Tp* operator--() _NOEXCEPT {return fetch_sub(1) - 1;} 1063 _LIBCPP_INLINE_VISIBILITY 1064 _Tp* operator+=(ptrdiff_t __op) volatile _NOEXCEPT {return fetch_add(__op) + __op;} 1065 _LIBCPP_INLINE_VISIBILITY 1066 _Tp* operator+=(ptrdiff_t __op) _NOEXCEPT {return fetch_add(__op) + __op;} 1067 _LIBCPP_INLINE_VISIBILITY 1068 _Tp* operator-=(ptrdiff_t __op) volatile _NOEXCEPT {return fetch_sub(__op) - __op;} 1069 _LIBCPP_INLINE_VISIBILITY 1070 _Tp* operator-=(ptrdiff_t __op) _NOEXCEPT {return fetch_sub(__op) - __op;} 1071}; 1072 1073// atomic_is_lock_free 1074 1075template <class _Tp> 1076inline _LIBCPP_INLINE_VISIBILITY 1077bool 1078atomic_is_lock_free(const volatile atomic<_Tp>* __o) _NOEXCEPT 1079{ 1080 return __o->is_lock_free(); 1081} 1082 1083template <class _Tp> 1084inline _LIBCPP_INLINE_VISIBILITY 1085bool 1086atomic_is_lock_free(const atomic<_Tp>* __o) _NOEXCEPT 1087{ 1088 return __o->is_lock_free(); 1089} 1090 1091// atomic_init 1092 1093template <class _Tp> 1094inline _LIBCPP_INLINE_VISIBILITY 1095void 1096atomic_init(volatile atomic<_Tp>* __o, _Tp __d) _NOEXCEPT 1097{ 1098 __c11_atomic_init(&__o->__a_, __d); 1099} 1100 1101template <class _Tp> 1102inline _LIBCPP_INLINE_VISIBILITY 1103void 1104atomic_init(atomic<_Tp>* __o, _Tp __d) _NOEXCEPT 1105{ 1106 __c11_atomic_init(&__o->__a_, __d); 1107} 1108 1109// atomic_store 1110 1111template <class _Tp> 1112inline _LIBCPP_INLINE_VISIBILITY 1113void 1114atomic_store(volatile atomic<_Tp>* __o, _Tp __d) _NOEXCEPT 1115{ 1116 __o->store(__d); 1117} 1118 1119template <class _Tp> 1120inline _LIBCPP_INLINE_VISIBILITY 1121void 1122atomic_store(atomic<_Tp>* __o, _Tp __d) _NOEXCEPT 1123{ 1124 __o->store(__d); 1125} 1126 1127// atomic_store_explicit 1128 1129template <class _Tp> 1130inline _LIBCPP_INLINE_VISIBILITY 1131void 1132atomic_store_explicit(volatile atomic<_Tp>* __o, _Tp __d, memory_order __m) _NOEXCEPT 1133{ 1134 __o->store(__d, __m); 1135} 1136 1137template <class _Tp> 1138inline _LIBCPP_INLINE_VISIBILITY 1139void 1140atomic_store_explicit(atomic<_Tp>* __o, _Tp __d, memory_order __m) _NOEXCEPT 1141{ 1142 __o->store(__d, __m); 1143} 1144 1145// atomic_load 1146 1147template <class _Tp> 1148inline _LIBCPP_INLINE_VISIBILITY 1149_Tp 1150atomic_load(const volatile atomic<_Tp>* __o) _NOEXCEPT 1151{ 1152 return __o->load(); 1153} 1154 1155template <class _Tp> 1156inline _LIBCPP_INLINE_VISIBILITY 1157_Tp 1158atomic_load(const atomic<_Tp>* __o) _NOEXCEPT 1159{ 1160 return __o->load(); 1161} 1162 1163// atomic_load_explicit 1164 1165template <class _Tp> 1166inline _LIBCPP_INLINE_VISIBILITY 1167_Tp 1168atomic_load_explicit(const volatile atomic<_Tp>* __o, memory_order __m) _NOEXCEPT 1169{ 1170 return __o->load(__m); 1171} 1172 1173template <class _Tp> 1174inline _LIBCPP_INLINE_VISIBILITY 1175_Tp 1176atomic_load_explicit(const atomic<_Tp>* __o, memory_order __m) _NOEXCEPT 1177{ 1178 return __o->load(__m); 1179} 1180 1181// atomic_exchange 1182 1183template <class _Tp> 1184inline _LIBCPP_INLINE_VISIBILITY 1185_Tp 1186atomic_exchange(volatile atomic<_Tp>* __o, _Tp __d) _NOEXCEPT 1187{ 1188 return __o->exchange(__d); 1189} 1190 1191template <class _Tp> 1192inline _LIBCPP_INLINE_VISIBILITY 1193_Tp 1194atomic_exchange(atomic<_Tp>* __o, _Tp __d) _NOEXCEPT 1195{ 1196 return __o->exchange(__d); 1197} 1198 1199// atomic_exchange_explicit 1200 1201template <class _Tp> 1202inline _LIBCPP_INLINE_VISIBILITY 1203_Tp 1204atomic_exchange_explicit(volatile atomic<_Tp>* __o, _Tp __d, memory_order __m) _NOEXCEPT 1205{ 1206 return __o->exchange(__d, __m); 1207} 1208 1209template <class _Tp> 1210inline _LIBCPP_INLINE_VISIBILITY 1211_Tp 1212atomic_exchange_explicit(atomic<_Tp>* __o, _Tp __d, memory_order __m) _NOEXCEPT 1213{ 1214 return __o->exchange(__d, __m); 1215} 1216 1217// atomic_compare_exchange_weak 1218 1219template <class _Tp> 1220inline _LIBCPP_INLINE_VISIBILITY 1221bool 1222atomic_compare_exchange_weak(volatile atomic<_Tp>* __o, _Tp* __e, _Tp __d) _NOEXCEPT 1223{ 1224 return __o->compare_exchange_weak(*__e, __d); 1225} 1226 1227template <class _Tp> 1228inline _LIBCPP_INLINE_VISIBILITY 1229bool 1230atomic_compare_exchange_weak(atomic<_Tp>* __o, _Tp* __e, _Tp __d) _NOEXCEPT 1231{ 1232 return __o->compare_exchange_weak(*__e, __d); 1233} 1234 1235// atomic_compare_exchange_strong 1236 1237template <class _Tp> 1238inline _LIBCPP_INLINE_VISIBILITY 1239bool 1240atomic_compare_exchange_strong(volatile atomic<_Tp>* __o, _Tp* __e, _Tp __d) _NOEXCEPT 1241{ 1242 return __o->compare_exchange_strong(*__e, __d); 1243} 1244 1245template <class _Tp> 1246inline _LIBCPP_INLINE_VISIBILITY 1247bool 1248atomic_compare_exchange_strong(atomic<_Tp>* __o, _Tp* __e, _Tp __d) _NOEXCEPT 1249{ 1250 return __o->compare_exchange_strong(*__e, __d); 1251} 1252 1253// atomic_compare_exchange_weak_explicit 1254 1255template <class _Tp> 1256inline _LIBCPP_INLINE_VISIBILITY 1257bool 1258atomic_compare_exchange_weak_explicit(volatile atomic<_Tp>* __o, _Tp* __e, 1259 _Tp __d, 1260 memory_order __s, memory_order __f) _NOEXCEPT 1261{ 1262 return __o->compare_exchange_weak(*__e, __d, __s, __f); 1263} 1264 1265template <class _Tp> 1266inline _LIBCPP_INLINE_VISIBILITY 1267bool 1268atomic_compare_exchange_weak_explicit(atomic<_Tp>* __o, _Tp* __e, _Tp __d, 1269 memory_order __s, memory_order __f) _NOEXCEPT 1270{ 1271 return __o->compare_exchange_weak(*__e, __d, __s, __f); 1272} 1273 1274// atomic_compare_exchange_strong_explicit 1275 1276template <class _Tp> 1277inline _LIBCPP_INLINE_VISIBILITY 1278bool 1279atomic_compare_exchange_strong_explicit(volatile atomic<_Tp>* __o, 1280 _Tp* __e, _Tp __d, 1281 memory_order __s, memory_order __f) _NOEXCEPT 1282{ 1283 return __o->compare_exchange_strong(*__e, __d, __s, __f); 1284} 1285 1286template <class _Tp> 1287inline _LIBCPP_INLINE_VISIBILITY 1288bool 1289atomic_compare_exchange_strong_explicit(atomic<_Tp>* __o, _Tp* __e, 1290 _Tp __d, 1291 memory_order __s, memory_order __f) _NOEXCEPT 1292{ 1293 return __o->compare_exchange_strong(*__e, __d, __s, __f); 1294} 1295 1296// atomic_fetch_add 1297 1298template <class _Tp> 1299inline _LIBCPP_INLINE_VISIBILITY 1300typename enable_if 1301< 1302 is_integral<_Tp>::value && !is_same<_Tp, bool>::value, 1303 _Tp 1304>::type 1305atomic_fetch_add(volatile atomic<_Tp>* __o, _Tp __op) _NOEXCEPT 1306{ 1307 return __o->fetch_add(__op); 1308} 1309 1310template <class _Tp> 1311inline _LIBCPP_INLINE_VISIBILITY 1312typename enable_if 1313< 1314 is_integral<_Tp>::value && !is_same<_Tp, bool>::value, 1315 _Tp 1316>::type 1317atomic_fetch_add(atomic<_Tp>* __o, _Tp __op) _NOEXCEPT 1318{ 1319 return __o->fetch_add(__op); 1320} 1321 1322template <class _Tp> 1323inline _LIBCPP_INLINE_VISIBILITY 1324_Tp* 1325atomic_fetch_add(volatile atomic<_Tp*>* __o, ptrdiff_t __op) _NOEXCEPT 1326{ 1327 return __o->fetch_add(__op); 1328} 1329 1330template <class _Tp> 1331inline _LIBCPP_INLINE_VISIBILITY 1332_Tp* 1333atomic_fetch_add(atomic<_Tp*>* __o, ptrdiff_t __op) _NOEXCEPT 1334{ 1335 return __o->fetch_add(__op); 1336} 1337 1338// atomic_fetch_add_explicit 1339 1340template <class _Tp> 1341inline _LIBCPP_INLINE_VISIBILITY 1342typename enable_if 1343< 1344 is_integral<_Tp>::value && !is_same<_Tp, bool>::value, 1345 _Tp 1346>::type 1347atomic_fetch_add_explicit(volatile atomic<_Tp>* __o, _Tp __op, memory_order __m) _NOEXCEPT 1348{ 1349 return __o->fetch_add(__op, __m); 1350} 1351 1352template <class _Tp> 1353inline _LIBCPP_INLINE_VISIBILITY 1354typename enable_if 1355< 1356 is_integral<_Tp>::value && !is_same<_Tp, bool>::value, 1357 _Tp 1358>::type 1359atomic_fetch_add_explicit(atomic<_Tp>* __o, _Tp __op, memory_order __m) _NOEXCEPT 1360{ 1361 return __o->fetch_add(__op, __m); 1362} 1363 1364template <class _Tp> 1365inline _LIBCPP_INLINE_VISIBILITY 1366_Tp* 1367atomic_fetch_add_explicit(volatile atomic<_Tp*>* __o, ptrdiff_t __op, 1368 memory_order __m) _NOEXCEPT 1369{ 1370 return __o->fetch_add(__op, __m); 1371} 1372 1373template <class _Tp> 1374inline _LIBCPP_INLINE_VISIBILITY 1375_Tp* 1376atomic_fetch_add_explicit(atomic<_Tp*>* __o, ptrdiff_t __op, memory_order __m) _NOEXCEPT 1377{ 1378 return __o->fetch_add(__op, __m); 1379} 1380 1381// atomic_fetch_sub 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_sub(volatile atomic<_Tp>* __o, _Tp __op) _NOEXCEPT 1391{ 1392 return __o->fetch_sub(__op); 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_sub(atomic<_Tp>* __o, _Tp __op) _NOEXCEPT 1403{ 1404 return __o->fetch_sub(__op); 1405} 1406 1407template <class _Tp> 1408inline _LIBCPP_INLINE_VISIBILITY 1409_Tp* 1410atomic_fetch_sub(volatile atomic<_Tp*>* __o, ptrdiff_t __op) _NOEXCEPT 1411{ 1412 return __o->fetch_sub(__op); 1413} 1414 1415template <class _Tp> 1416inline _LIBCPP_INLINE_VISIBILITY 1417_Tp* 1418atomic_fetch_sub(atomic<_Tp*>* __o, ptrdiff_t __op) _NOEXCEPT 1419{ 1420 return __o->fetch_sub(__op); 1421} 1422 1423// atomic_fetch_sub_explicit 1424 1425template <class _Tp> 1426inline _LIBCPP_INLINE_VISIBILITY 1427typename enable_if 1428< 1429 is_integral<_Tp>::value && !is_same<_Tp, bool>::value, 1430 _Tp 1431>::type 1432atomic_fetch_sub_explicit(volatile atomic<_Tp>* __o, _Tp __op, memory_order __m) _NOEXCEPT 1433{ 1434 return __o->fetch_sub(__op, __m); 1435} 1436 1437template <class _Tp> 1438inline _LIBCPP_INLINE_VISIBILITY 1439typename enable_if 1440< 1441 is_integral<_Tp>::value && !is_same<_Tp, bool>::value, 1442 _Tp 1443>::type 1444atomic_fetch_sub_explicit(atomic<_Tp>* __o, _Tp __op, memory_order __m) _NOEXCEPT 1445{ 1446 return __o->fetch_sub(__op, __m); 1447} 1448 1449template <class _Tp> 1450inline _LIBCPP_INLINE_VISIBILITY 1451_Tp* 1452atomic_fetch_sub_explicit(volatile atomic<_Tp*>* __o, ptrdiff_t __op, 1453 memory_order __m) _NOEXCEPT 1454{ 1455 return __o->fetch_sub(__op, __m); 1456} 1457 1458template <class _Tp> 1459inline _LIBCPP_INLINE_VISIBILITY 1460_Tp* 1461atomic_fetch_sub_explicit(atomic<_Tp*>* __o, ptrdiff_t __op, memory_order __m) _NOEXCEPT 1462{ 1463 return __o->fetch_sub(__op, __m); 1464} 1465 1466// atomic_fetch_and 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_and(volatile atomic<_Tp>* __o, _Tp __op) _NOEXCEPT 1476{ 1477 return __o->fetch_and(__op); 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_and(atomic<_Tp>* __o, _Tp __op) _NOEXCEPT 1488{ 1489 return __o->fetch_and(__op); 1490} 1491 1492// atomic_fetch_and_explicit 1493 1494template <class _Tp> 1495inline _LIBCPP_INLINE_VISIBILITY 1496typename enable_if 1497< 1498 is_integral<_Tp>::value && !is_same<_Tp, bool>::value, 1499 _Tp 1500>::type 1501atomic_fetch_and_explicit(volatile atomic<_Tp>* __o, _Tp __op, memory_order __m) _NOEXCEPT 1502{ 1503 return __o->fetch_and(__op, __m); 1504} 1505 1506template <class _Tp> 1507inline _LIBCPP_INLINE_VISIBILITY 1508typename enable_if 1509< 1510 is_integral<_Tp>::value && !is_same<_Tp, bool>::value, 1511 _Tp 1512>::type 1513atomic_fetch_and_explicit(atomic<_Tp>* __o, _Tp __op, memory_order __m) _NOEXCEPT 1514{ 1515 return __o->fetch_and(__op, __m); 1516} 1517 1518// atomic_fetch_or 1519 1520template <class _Tp> 1521inline _LIBCPP_INLINE_VISIBILITY 1522typename enable_if 1523< 1524 is_integral<_Tp>::value && !is_same<_Tp, bool>::value, 1525 _Tp 1526>::type 1527atomic_fetch_or(volatile atomic<_Tp>* __o, _Tp __op) _NOEXCEPT 1528{ 1529 return __o->fetch_or(__op); 1530} 1531 1532template <class _Tp> 1533inline _LIBCPP_INLINE_VISIBILITY 1534typename enable_if 1535< 1536 is_integral<_Tp>::value && !is_same<_Tp, bool>::value, 1537 _Tp 1538>::type 1539atomic_fetch_or(atomic<_Tp>* __o, _Tp __op) _NOEXCEPT 1540{ 1541 return __o->fetch_or(__op); 1542} 1543 1544// atomic_fetch_or_explicit 1545 1546template <class _Tp> 1547inline _LIBCPP_INLINE_VISIBILITY 1548typename enable_if 1549< 1550 is_integral<_Tp>::value && !is_same<_Tp, bool>::value, 1551 _Tp 1552>::type 1553atomic_fetch_or_explicit(volatile atomic<_Tp>* __o, _Tp __op, memory_order __m) _NOEXCEPT 1554{ 1555 return __o->fetch_or(__op, __m); 1556} 1557 1558template <class _Tp> 1559inline _LIBCPP_INLINE_VISIBILITY 1560typename enable_if 1561< 1562 is_integral<_Tp>::value && !is_same<_Tp, bool>::value, 1563 _Tp 1564>::type 1565atomic_fetch_or_explicit(atomic<_Tp>* __o, _Tp __op, memory_order __m) _NOEXCEPT 1566{ 1567 return __o->fetch_or(__op, __m); 1568} 1569 1570// atomic_fetch_xor 1571 1572template <class _Tp> 1573inline _LIBCPP_INLINE_VISIBILITY 1574typename enable_if 1575< 1576 is_integral<_Tp>::value && !is_same<_Tp, bool>::value, 1577 _Tp 1578>::type 1579atomic_fetch_xor(volatile atomic<_Tp>* __o, _Tp __op) _NOEXCEPT 1580{ 1581 return __o->fetch_xor(__op); 1582} 1583 1584template <class _Tp> 1585inline _LIBCPP_INLINE_VISIBILITY 1586typename enable_if 1587< 1588 is_integral<_Tp>::value && !is_same<_Tp, bool>::value, 1589 _Tp 1590>::type 1591atomic_fetch_xor(atomic<_Tp>* __o, _Tp __op) _NOEXCEPT 1592{ 1593 return __o->fetch_xor(__op); 1594} 1595 1596// atomic_fetch_xor_explicit 1597 1598template <class _Tp> 1599inline _LIBCPP_INLINE_VISIBILITY 1600typename enable_if 1601< 1602 is_integral<_Tp>::value && !is_same<_Tp, bool>::value, 1603 _Tp 1604>::type 1605atomic_fetch_xor_explicit(volatile atomic<_Tp>* __o, _Tp __op, memory_order __m) _NOEXCEPT 1606{ 1607 return __o->fetch_xor(__op, __m); 1608} 1609 1610template <class _Tp> 1611inline _LIBCPP_INLINE_VISIBILITY 1612typename enable_if 1613< 1614 is_integral<_Tp>::value && !is_same<_Tp, bool>::value, 1615 _Tp 1616>::type 1617atomic_fetch_xor_explicit(atomic<_Tp>* __o, _Tp __op, memory_order __m) _NOEXCEPT 1618{ 1619 return __o->fetch_xor(__op, __m); 1620} 1621 1622// flag type and operations 1623 1624typedef struct atomic_flag 1625{ 1626 _Atomic(bool) __a_; 1627 1628 _LIBCPP_INLINE_VISIBILITY 1629 bool test_and_set(memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT 1630 {return __c11_atomic_exchange(&__a_, true, __m);} 1631 _LIBCPP_INLINE_VISIBILITY 1632 bool test_and_set(memory_order __m = memory_order_seq_cst) _NOEXCEPT 1633 {return __c11_atomic_exchange(&__a_, true, __m);} 1634 _LIBCPP_INLINE_VISIBILITY 1635 void clear(memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT 1636 {__c11_atomic_store(&__a_, false, __m);} 1637 _LIBCPP_INLINE_VISIBILITY 1638 void clear(memory_order __m = memory_order_seq_cst) _NOEXCEPT 1639 {__c11_atomic_store(&__a_, false, __m);} 1640 1641 _LIBCPP_INLINE_VISIBILITY 1642#ifndef _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS 1643 atomic_flag() _NOEXCEPT = default; 1644#else 1645 atomic_flag() _NOEXCEPT : __a_() {} 1646#endif // _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS 1647 1648 _LIBCPP_INLINE_VISIBILITY 1649 atomic_flag(bool __b) _NOEXCEPT : __a_(__b) {} 1650 1651#ifndef _LIBCPP_HAS_NO_DELETED_FUNCTIONS 1652 atomic_flag(const atomic_flag&) = delete; 1653 atomic_flag& operator=(const atomic_flag&) = delete; 1654 atomic_flag& operator=(const atomic_flag&) volatile = delete; 1655#else // _LIBCPP_HAS_NO_DELETED_FUNCTIONS 1656private: 1657 atomic_flag(const atomic_flag&); 1658 atomic_flag& operator=(const atomic_flag&); 1659 atomic_flag& operator=(const atomic_flag&) volatile; 1660#endif // _LIBCPP_HAS_NO_DELETED_FUNCTIONS 1661} atomic_flag; 1662 1663inline _LIBCPP_INLINE_VISIBILITY 1664bool 1665atomic_flag_test_and_set(volatile atomic_flag* __o) _NOEXCEPT 1666{ 1667 return __o->test_and_set(); 1668} 1669 1670inline _LIBCPP_INLINE_VISIBILITY 1671bool 1672atomic_flag_test_and_set(atomic_flag* __o) _NOEXCEPT 1673{ 1674 return __o->test_and_set(); 1675} 1676 1677inline _LIBCPP_INLINE_VISIBILITY 1678bool 1679atomic_flag_test_and_set_explicit(volatile atomic_flag* __o, memory_order __m) _NOEXCEPT 1680{ 1681 return __o->test_and_set(__m); 1682} 1683 1684inline _LIBCPP_INLINE_VISIBILITY 1685bool 1686atomic_flag_test_and_set_explicit(atomic_flag* __o, memory_order __m) _NOEXCEPT 1687{ 1688 return __o->test_and_set(__m); 1689} 1690 1691inline _LIBCPP_INLINE_VISIBILITY 1692void 1693atomic_flag_clear(volatile atomic_flag* __o) _NOEXCEPT 1694{ 1695 __o->clear(); 1696} 1697 1698inline _LIBCPP_INLINE_VISIBILITY 1699void 1700atomic_flag_clear(atomic_flag* __o) _NOEXCEPT 1701{ 1702 __o->clear(); 1703} 1704 1705inline _LIBCPP_INLINE_VISIBILITY 1706void 1707atomic_flag_clear_explicit(volatile atomic_flag* __o, memory_order __m) _NOEXCEPT 1708{ 1709 __o->clear(__m); 1710} 1711 1712inline _LIBCPP_INLINE_VISIBILITY 1713void 1714atomic_flag_clear_explicit(atomic_flag* __o, memory_order __m) _NOEXCEPT 1715{ 1716 __o->clear(__m); 1717} 1718 1719// fences 1720 1721inline _LIBCPP_INLINE_VISIBILITY 1722void 1723atomic_thread_fence(memory_order __m) _NOEXCEPT 1724{ 1725 __c11_atomic_thread_fence(__m); 1726} 1727 1728inline _LIBCPP_INLINE_VISIBILITY 1729void 1730atomic_signal_fence(memory_order __m) _NOEXCEPT 1731{ 1732 __c11_atomic_signal_fence(__m); 1733} 1734 1735// Atomics for standard typedef types 1736 1737typedef atomic<bool> atomic_bool; 1738typedef atomic<char> atomic_char; 1739typedef atomic<signed char> atomic_schar; 1740typedef atomic<unsigned char> atomic_uchar; 1741typedef atomic<short> atomic_short; 1742typedef atomic<unsigned short> atomic_ushort; 1743typedef atomic<int> atomic_int; 1744typedef atomic<unsigned int> atomic_uint; 1745typedef atomic<long> atomic_long; 1746typedef atomic<unsigned long> atomic_ulong; 1747typedef atomic<long long> atomic_llong; 1748typedef atomic<unsigned long long> atomic_ullong; 1749typedef atomic<char16_t> atomic_char16_t; 1750typedef atomic<char32_t> atomic_char32_t; 1751typedef atomic<wchar_t> atomic_wchar_t; 1752 1753typedef atomic<int_least8_t> atomic_int_least8_t; 1754typedef atomic<uint_least8_t> atomic_uint_least8_t; 1755typedef atomic<int_least16_t> atomic_int_least16_t; 1756typedef atomic<uint_least16_t> atomic_uint_least16_t; 1757typedef atomic<int_least32_t> atomic_int_least32_t; 1758typedef atomic<uint_least32_t> atomic_uint_least32_t; 1759typedef atomic<int_least64_t> atomic_int_least64_t; 1760typedef atomic<uint_least64_t> atomic_uint_least64_t; 1761 1762typedef atomic<int_fast8_t> atomic_int_fast8_t; 1763typedef atomic<uint_fast8_t> atomic_uint_fast8_t; 1764typedef atomic<int_fast16_t> atomic_int_fast16_t; 1765typedef atomic<uint_fast16_t> atomic_uint_fast16_t; 1766typedef atomic<int_fast32_t> atomic_int_fast32_t; 1767typedef atomic<uint_fast32_t> atomic_uint_fast32_t; 1768typedef atomic<int_fast64_t> atomic_int_fast64_t; 1769typedef atomic<uint_fast64_t> atomic_uint_fast64_t; 1770 1771typedef atomic<intptr_t> atomic_intptr_t; 1772typedef atomic<uintptr_t> atomic_uintptr_t; 1773typedef atomic<size_t> atomic_size_t; 1774typedef atomic<ptrdiff_t> atomic_ptrdiff_t; 1775typedef atomic<intmax_t> atomic_intmax_t; 1776typedef atomic<uintmax_t> atomic_uintmax_t; 1777 1778#define ATOMIC_FLAG_INIT {false} 1779#define ATOMIC_VAR_INIT(__v) {__v} 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_LIBCPP_END_NAMESPACE_STD 1793 1794#endif // _LIBCPP_ATOMIC 1795