2 //===--------------------------- atomic -----------------------------------===//
4 // The LLVM Compiler Infrastructure
6 // This file is distributed under the University of Illinois Open Source
7 // License. See LICENSE.TXT for details.
9 //===----------------------------------------------------------------------===//
11 #ifndef _LIBCPP_ATOMIC
12 #define _LIBCPP_ATOMIC
22 #define __cpp_lib_atomic_is_always_lock_free // as specified by SG10
24 // order and consistency
26 typedef enum memory_order
29 memory_order_consume, // load-consume
30 memory_order_acquire, // load-acquire
31 memory_order_release, // store-release
32 memory_order_acq_rel, // store-release load-acquire
33 memory_order_seq_cst // store-release load-acquire
36 template <class T> T kill_dependency(T y) noexcept;
40 #define ATOMIC_BOOL_LOCK_FREE unspecified
41 #define ATOMIC_CHAR_LOCK_FREE unspecified
42 #define ATOMIC_CHAR16_T_LOCK_FREE unspecified
43 #define ATOMIC_CHAR32_T_LOCK_FREE unspecified
44 #define ATOMIC_WCHAR_T_LOCK_FREE unspecified
45 #define ATOMIC_SHORT_LOCK_FREE unspecified
46 #define ATOMIC_INT_LOCK_FREE unspecified
47 #define ATOMIC_LONG_LOCK_FREE unspecified
48 #define ATOMIC_LLONG_LOCK_FREE unspecified
49 #define ATOMIC_POINTER_LOCK_FREE unspecified
51 // flag type and operations
53 typedef struct atomic_flag
55 bool test_and_set(memory_order m = memory_order_seq_cst) volatile noexcept;
56 bool test_and_set(memory_order m = memory_order_seq_cst) noexcept;
57 void clear(memory_order m = memory_order_seq_cst) volatile noexcept;
58 void clear(memory_order m = memory_order_seq_cst) noexcept;
59 atomic_flag() noexcept = default;
60 atomic_flag(const atomic_flag&) = delete;
61 atomic_flag& operator=(const atomic_flag&) = delete;
62 atomic_flag& operator=(const atomic_flag&) volatile = delete;
66 atomic_flag_test_and_set(volatile atomic_flag* obj) noexcept;
69 atomic_flag_test_and_set(atomic_flag* obj) noexcept;
72 atomic_flag_test_and_set_explicit(volatile atomic_flag* obj,
73 memory_order m) noexcept;
76 atomic_flag_test_and_set_explicit(atomic_flag* obj, memory_order m) noexcept;
79 atomic_flag_clear(volatile atomic_flag* obj) noexcept;
82 atomic_flag_clear(atomic_flag* obj) noexcept;
85 atomic_flag_clear_explicit(volatile atomic_flag* obj, memory_order m) noexcept;
88 atomic_flag_clear_explicit(atomic_flag* obj, memory_order m) noexcept;
90 #define ATOMIC_FLAG_INIT see below
91 #define ATOMIC_VAR_INIT(value) see below
96 static constexpr bool is_always_lock_free;
97 bool is_lock_free() const volatile noexcept;
98 bool is_lock_free() const noexcept;
99 void store(T desr, memory_order m = memory_order_seq_cst) volatile noexcept;
100 void store(T desr, memory_order m = memory_order_seq_cst) noexcept;
101 T load(memory_order m = memory_order_seq_cst) const volatile noexcept;
102 T load(memory_order m = memory_order_seq_cst) const noexcept;
103 operator T() const volatile noexcept;
104 operator T() const noexcept;
105 T exchange(T desr, memory_order m = memory_order_seq_cst) volatile noexcept;
106 T exchange(T desr, memory_order m = memory_order_seq_cst) noexcept;
107 bool compare_exchange_weak(T& expc, T desr,
108 memory_order s, memory_order f) volatile noexcept;
109 bool compare_exchange_weak(T& expc, T desr, memory_order s, memory_order f) noexcept;
110 bool compare_exchange_strong(T& expc, T desr,
111 memory_order s, memory_order f) volatile noexcept;
112 bool compare_exchange_strong(T& expc, T desr,
113 memory_order s, memory_order f) noexcept;
114 bool compare_exchange_weak(T& expc, T desr,
115 memory_order m = memory_order_seq_cst) volatile noexcept;
116 bool compare_exchange_weak(T& expc, T desr,
117 memory_order m = memory_order_seq_cst) noexcept;
118 bool compare_exchange_strong(T& expc, T desr,
119 memory_order m = memory_order_seq_cst) volatile noexcept;
120 bool compare_exchange_strong(T& expc, T desr,
121 memory_order m = memory_order_seq_cst) noexcept;
123 atomic() noexcept = default;
124 constexpr atomic(T desr) noexcept;
125 atomic(const atomic&) = delete;
126 atomic& operator=(const atomic&) = delete;
127 atomic& operator=(const atomic&) volatile = delete;
128 T operator=(T) volatile noexcept;
129 T operator=(T) noexcept;
133 struct atomic<integral>
135 static constexpr bool is_always_lock_free;
136 bool is_lock_free() const volatile noexcept;
137 bool is_lock_free() const noexcept;
138 void store(integral desr, memory_order m = memory_order_seq_cst) volatile noexcept;
139 void store(integral desr, memory_order m = memory_order_seq_cst) noexcept;
140 integral load(memory_order m = memory_order_seq_cst) const volatile noexcept;
141 integral load(memory_order m = memory_order_seq_cst) const noexcept;
142 operator integral() const volatile noexcept;
143 operator integral() const noexcept;
144 integral exchange(integral desr,
145 memory_order m = memory_order_seq_cst) volatile noexcept;
146 integral exchange(integral desr, memory_order m = memory_order_seq_cst) noexcept;
147 bool compare_exchange_weak(integral& expc, integral desr,
148 memory_order s, memory_order f) volatile noexcept;
149 bool compare_exchange_weak(integral& expc, integral desr,
150 memory_order s, memory_order f) noexcept;
151 bool compare_exchange_strong(integral& expc, integral desr,
152 memory_order s, memory_order f) volatile noexcept;
153 bool compare_exchange_strong(integral& expc, integral desr,
154 memory_order s, memory_order f) noexcept;
155 bool compare_exchange_weak(integral& expc, integral desr,
156 memory_order m = memory_order_seq_cst) volatile noexcept;
157 bool compare_exchange_weak(integral& expc, integral desr,
158 memory_order m = memory_order_seq_cst) noexcept;
159 bool compare_exchange_strong(integral& expc, integral desr,
160 memory_order m = memory_order_seq_cst) volatile noexcept;
161 bool compare_exchange_strong(integral& expc, integral desr,
162 memory_order m = memory_order_seq_cst) noexcept;
165 fetch_add(integral op, memory_order m = memory_order_seq_cst) volatile noexcept;
166 integral fetch_add(integral op, memory_order m = memory_order_seq_cst) noexcept;
168 fetch_sub(integral op, memory_order m = memory_order_seq_cst) volatile noexcept;
169 integral fetch_sub(integral op, memory_order m = memory_order_seq_cst) noexcept;
171 fetch_and(integral op, memory_order m = memory_order_seq_cst) volatile noexcept;
172 integral fetch_and(integral op, memory_order m = memory_order_seq_cst) noexcept;
174 fetch_or(integral op, memory_order m = memory_order_seq_cst) volatile noexcept;
175 integral fetch_or(integral op, memory_order m = memory_order_seq_cst) noexcept;
177 fetch_xor(integral op, memory_order m = memory_order_seq_cst) volatile noexcept;
178 integral fetch_xor(integral op, memory_order m = memory_order_seq_cst) noexcept;
180 atomic() noexcept = default;
181 constexpr atomic(integral desr) noexcept;
182 atomic(const atomic&) = delete;
183 atomic& operator=(const atomic&) = delete;
184 atomic& operator=(const atomic&) volatile = delete;
185 integral operator=(integral desr) volatile noexcept;
186 integral operator=(integral desr) noexcept;
188 integral operator++(int) volatile noexcept;
189 integral operator++(int) noexcept;
190 integral operator--(int) volatile noexcept;
191 integral operator--(int) noexcept;
192 integral operator++() volatile noexcept;
193 integral operator++() noexcept;
194 integral operator--() volatile noexcept;
195 integral operator--() noexcept;
196 integral operator+=(integral op) volatile noexcept;
197 integral operator+=(integral op) noexcept;
198 integral operator-=(integral op) volatile noexcept;
199 integral operator-=(integral op) noexcept;
200 integral operator&=(integral op) volatile noexcept;
201 integral operator&=(integral op) noexcept;
202 integral operator|=(integral op) volatile noexcept;
203 integral operator|=(integral op) noexcept;
204 integral operator^=(integral op) volatile noexcept;
205 integral operator^=(integral op) noexcept;
211 static constexpr bool is_always_lock_free;
212 bool is_lock_free() const volatile noexcept;
213 bool is_lock_free() const noexcept;
214 void store(T* desr, memory_order m = memory_order_seq_cst) volatile noexcept;
215 void store(T* desr, memory_order m = memory_order_seq_cst) noexcept;
216 T* load(memory_order m = memory_order_seq_cst) const volatile noexcept;
217 T* load(memory_order m = memory_order_seq_cst) const noexcept;
218 operator T*() const volatile noexcept;
219 operator T*() const noexcept;
220 T* exchange(T* desr, memory_order m = memory_order_seq_cst) volatile noexcept;
221 T* exchange(T* desr, memory_order m = memory_order_seq_cst) noexcept;
222 bool compare_exchange_weak(T*& expc, T* desr,
223 memory_order s, memory_order f) volatile noexcept;
224 bool compare_exchange_weak(T*& expc, T* desr,
225 memory_order s, memory_order f) noexcept;
226 bool compare_exchange_strong(T*& expc, T* desr,
227 memory_order s, memory_order f) volatile noexcept;
228 bool compare_exchange_strong(T*& expc, T* desr,
229 memory_order s, memory_order f) noexcept;
230 bool compare_exchange_weak(T*& expc, T* desr,
231 memory_order m = memory_order_seq_cst) volatile noexcept;
232 bool compare_exchange_weak(T*& expc, T* desr,
233 memory_order m = memory_order_seq_cst) noexcept;
234 bool compare_exchange_strong(T*& expc, T* desr,
235 memory_order m = memory_order_seq_cst) volatile noexcept;
236 bool compare_exchange_strong(T*& expc, T* desr,
237 memory_order m = memory_order_seq_cst) noexcept;
238 T* fetch_add(ptrdiff_t op, memory_order m = memory_order_seq_cst) volatile noexcept;
239 T* fetch_add(ptrdiff_t op, memory_order m = memory_order_seq_cst) noexcept;
240 T* fetch_sub(ptrdiff_t op, memory_order m = memory_order_seq_cst) volatile noexcept;
241 T* fetch_sub(ptrdiff_t op, memory_order m = memory_order_seq_cst) noexcept;
243 atomic() noexcept = default;
244 constexpr atomic(T* desr) noexcept;
245 atomic(const atomic&) = delete;
246 atomic& operator=(const atomic&) = delete;
247 atomic& operator=(const atomic&) volatile = delete;
249 T* operator=(T*) volatile noexcept;
250 T* operator=(T*) noexcept;
251 T* operator++(int) volatile noexcept;
252 T* operator++(int) noexcept;
253 T* operator--(int) volatile noexcept;
254 T* operator--(int) noexcept;
255 T* operator++() volatile noexcept;
256 T* operator++() noexcept;
257 T* operator--() volatile noexcept;
258 T* operator--() noexcept;
259 T* operator+=(ptrdiff_t op) volatile noexcept;
260 T* operator+=(ptrdiff_t op) noexcept;
261 T* operator-=(ptrdiff_t op) volatile noexcept;
262 T* operator-=(ptrdiff_t op) noexcept;
268 atomic_is_lock_free(const volatile atomic<T>* obj) noexcept;
272 atomic_is_lock_free(const atomic<T>* obj) noexcept;
276 atomic_init(volatile atomic<T>* obj, T desr) noexcept;
280 atomic_init(atomic<T>* obj, T desr) noexcept;
284 atomic_store(volatile atomic<T>* obj, T desr) noexcept;
288 atomic_store(atomic<T>* obj, T desr) noexcept;
292 atomic_store_explicit(volatile atomic<T>* obj, T desr, memory_order m) noexcept;
296 atomic_store_explicit(atomic<T>* obj, T desr, memory_order m) noexcept;
300 atomic_load(const volatile atomic<T>* obj) noexcept;
304 atomic_load(const atomic<T>* obj) noexcept;
308 atomic_load_explicit(const volatile atomic<T>* obj, memory_order m) noexcept;
312 atomic_load_explicit(const atomic<T>* obj, memory_order m) noexcept;
316 atomic_exchange(volatile atomic<T>* obj, T desr) noexcept;
320 atomic_exchange(atomic<T>* obj, T desr) noexcept;
324 atomic_exchange_explicit(volatile atomic<T>* obj, T desr, memory_order m) noexcept;
328 atomic_exchange_explicit(atomic<T>* obj, T desr, memory_order m) noexcept;
332 atomic_compare_exchange_weak(volatile atomic<T>* obj, T* expc, T desr) noexcept;
336 atomic_compare_exchange_weak(atomic<T>* obj, T* expc, T desr) noexcept;
340 atomic_compare_exchange_strong(volatile atomic<T>* obj, T* expc, T desr) noexcept;
344 atomic_compare_exchange_strong(atomic<T>* obj, T* expc, T desr) noexcept;
348 atomic_compare_exchange_weak_explicit(volatile atomic<T>* obj, T* expc,
350 memory_order s, memory_order f) noexcept;
354 atomic_compare_exchange_weak_explicit(atomic<T>* obj, T* expc, T desr,
355 memory_order s, memory_order f) noexcept;
359 atomic_compare_exchange_strong_explicit(volatile atomic<T>* obj,
361 memory_order s, memory_order f) noexcept;
365 atomic_compare_exchange_strong_explicit(atomic<T>* obj, T* expc,
367 memory_order s, memory_order f) noexcept;
369 template <class Integral>
371 atomic_fetch_add(volatile atomic<Integral>* obj, Integral op) noexcept;
373 template <class Integral>
375 atomic_fetch_add(atomic<Integral>* obj, Integral op) noexcept;
377 template <class Integral>
379 atomic_fetch_add_explicit(volatile atomic<Integral>* obj, Integral op,
380 memory_order m) noexcept;
381 template <class Integral>
383 atomic_fetch_add_explicit(atomic<Integral>* obj, Integral op,
384 memory_order m) noexcept;
385 template <class Integral>
387 atomic_fetch_sub(volatile atomic<Integral>* obj, Integral op) noexcept;
389 template <class Integral>
391 atomic_fetch_sub(atomic<Integral>* obj, Integral op) noexcept;
393 template <class Integral>
395 atomic_fetch_sub_explicit(volatile atomic<Integral>* obj, Integral op,
396 memory_order m) noexcept;
397 template <class Integral>
399 atomic_fetch_sub_explicit(atomic<Integral>* obj, Integral op,
400 memory_order m) noexcept;
401 template <class Integral>
403 atomic_fetch_and(volatile atomic<Integral>* obj, Integral op) noexcept;
405 template <class Integral>
407 atomic_fetch_and(atomic<Integral>* obj, Integral op) noexcept;
409 template <class Integral>
411 atomic_fetch_and_explicit(volatile atomic<Integral>* obj, Integral op,
412 memory_order m) noexcept;
413 template <class Integral>
415 atomic_fetch_and_explicit(atomic<Integral>* obj, Integral op,
416 memory_order m) noexcept;
417 template <class Integral>
419 atomic_fetch_or(volatile atomic<Integral>* obj, Integral op) noexcept;
421 template <class Integral>
423 atomic_fetch_or(atomic<Integral>* obj, Integral op) noexcept;
425 template <class Integral>
427 atomic_fetch_or_explicit(volatile atomic<Integral>* obj, Integral op,
428 memory_order m) noexcept;
429 template <class Integral>
431 atomic_fetch_or_explicit(atomic<Integral>* obj, Integral op,
432 memory_order m) noexcept;
433 template <class Integral>
435 atomic_fetch_xor(volatile atomic<Integral>* obj, Integral op) noexcept;
437 template <class Integral>
439 atomic_fetch_xor(atomic<Integral>* obj, Integral op) noexcept;
441 template <class Integral>
443 atomic_fetch_xor_explicit(volatile atomic<Integral>* obj, Integral op,
444 memory_order m) noexcept;
445 template <class Integral>
447 atomic_fetch_xor_explicit(atomic<Integral>* obj, Integral op,
448 memory_order m) noexcept;
452 atomic_fetch_add(volatile atomic<T*>* obj, ptrdiff_t op) noexcept;
456 atomic_fetch_add(atomic<T*>* obj, ptrdiff_t op) noexcept;
460 atomic_fetch_add_explicit(volatile atomic<T*>* obj, ptrdiff_t op,
461 memory_order m) noexcept;
464 atomic_fetch_add_explicit(atomic<T*>* obj, ptrdiff_t op, memory_order m) noexcept;
468 atomic_fetch_sub(volatile atomic<T*>* obj, ptrdiff_t op) noexcept;
472 atomic_fetch_sub(atomic<T*>* obj, ptrdiff_t op) noexcept;
476 atomic_fetch_sub_explicit(volatile atomic<T*>* obj, ptrdiff_t op,
477 memory_order m) noexcept;
480 atomic_fetch_sub_explicit(atomic<T*>* obj, ptrdiff_t op, memory_order m) noexcept;
482 // Atomics for standard typedef types
484 typedef atomic<bool> atomic_bool;
485 typedef atomic<char> atomic_char;
486 typedef atomic<signed char> atomic_schar;
487 typedef atomic<unsigned char> atomic_uchar;
488 typedef atomic<short> atomic_short;
489 typedef atomic<unsigned short> atomic_ushort;
490 typedef atomic<int> atomic_int;
491 typedef atomic<unsigned int> atomic_uint;
492 typedef atomic<long> atomic_long;
493 typedef atomic<unsigned long> atomic_ulong;
494 typedef atomic<long long> atomic_llong;
495 typedef atomic<unsigned long long> atomic_ullong;
496 typedef atomic<char16_t> atomic_char16_t;
497 typedef atomic<char32_t> atomic_char32_t;
498 typedef atomic<wchar_t> atomic_wchar_t;
500 typedef atomic<int_least8_t> atomic_int_least8_t;
501 typedef atomic<uint_least8_t> atomic_uint_least8_t;
502 typedef atomic<int_least16_t> atomic_int_least16_t;
503 typedef atomic<uint_least16_t> atomic_uint_least16_t;
504 typedef atomic<int_least32_t> atomic_int_least32_t;
505 typedef atomic<uint_least32_t> atomic_uint_least32_t;
506 typedef atomic<int_least64_t> atomic_int_least64_t;
507 typedef atomic<uint_least64_t> atomic_uint_least64_t;
509 typedef atomic<int_fast8_t> atomic_int_fast8_t;
510 typedef atomic<uint_fast8_t> atomic_uint_fast8_t;
511 typedef atomic<int_fast16_t> atomic_int_fast16_t;
512 typedef atomic<uint_fast16_t> atomic_uint_fast16_t;
513 typedef atomic<int_fast32_t> atomic_int_fast32_t;
514 typedef atomic<uint_fast32_t> atomic_uint_fast32_t;
515 typedef atomic<int_fast64_t> atomic_int_fast64_t;
516 typedef atomic<uint_fast64_t> atomic_uint_fast64_t;
518 typedef atomic<int8_t> atomic_int8_t;
519 typedef atomic<uint8_t> atomic_uint8_t;
520 typedef atomic<int16_t> atomic_int16_t;
521 typedef atomic<uint16_t> atomic_uint16_t;
522 typedef atomic<int32_t> atomic_int32_t;
523 typedef atomic<uint32_t> atomic_uint32_t;
524 typedef atomic<int64_t> atomic_int64_t;
525 typedef atomic<uint64_t> atomic_uint64_t;
527 typedef atomic<intptr_t> atomic_intptr_t;
528 typedef atomic<uintptr_t> atomic_uintptr_t;
529 typedef atomic<size_t> atomic_size_t;
530 typedef atomic<ptrdiff_t> atomic_ptrdiff_t;
531 typedef atomic<intmax_t> atomic_intmax_t;
532 typedef atomic<uintmax_t> atomic_uintmax_t;
536 void atomic_thread_fence(memory_order m) noexcept;
537 void atomic_signal_fence(memory_order m) noexcept;
546 #include <type_traits>
549 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
550 #pragma GCC system_header
553 #ifdef _LIBCPP_HAS_NO_THREADS
554 #error <atomic> is not supported on this single threaded system
556 #if !defined(_LIBCPP_HAS_C_ATOMIC_IMP) && !defined(_LIBCPP_HAS_GCC_ATOMIC_IMP)
557 #error <atomic> is not implemented
559 #ifdef kill_dependency
560 #error C++ standard library is incompatible with <stdatomic.h>
563 #define _LIBCPP_CHECK_STORE_MEMORY_ORDER(__m) \
564 _LIBCPP_DIAGNOSE_WARNING(__m == memory_order_consume || \
565 __m == memory_order_acquire || \
566 __m == memory_order_acq_rel, \
567 "memory order argument to atomic operation is invalid")
569 #define _LIBCPP_CHECK_LOAD_MEMORY_ORDER(__m) \
570 _LIBCPP_DIAGNOSE_WARNING(__m == memory_order_release || \
571 __m == memory_order_acq_rel, \
572 "memory order argument to atomic operation is invalid")
574 #define _LIBCPP_CHECK_EXCHANGE_MEMORY_ORDER(__m, __f) \
575 _LIBCPP_DIAGNOSE_WARNING(__f == memory_order_release || \
576 __f == memory_order_acq_rel, \
577 "memory order argument to atomic operation is invalid")
579 _LIBCPP_BEGIN_NAMESPACE_STD
581 typedef enum memory_order
583 memory_order_relaxed, memory_order_consume, memory_order_acquire,
584 memory_order_release, memory_order_acq_rel, memory_order_seq_cst
587 #if defined(_LIBCPP_HAS_GCC_ATOMIC_IMP)
588 namespace __gcc_atomic {
589 template <typename _Tp>
590 struct __gcc_atomic_t {
593 static_assert(is_trivially_copyable<_Tp>::value,
594 "std::atomic<Tp> requires that 'Tp' be a trivially copyable type");
597 _LIBCPP_INLINE_VISIBILITY
598 #ifndef _LIBCPP_CXX03_LANG
599 __gcc_atomic_t() _NOEXCEPT = default;
601 __gcc_atomic_t() _NOEXCEPT : __a_value() {}
602 #endif // _LIBCPP_CXX03_LANG
603 _LIBCPP_CONSTEXPR explicit __gcc_atomic_t(_Tp value) _NOEXCEPT
604 : __a_value(value) {}
607 #define _Atomic(x) __gcc_atomic::__gcc_atomic_t<x>
609 template <typename _Tp> _Tp __create();
611 template <typename _Tp, typename _Td>
612 typename enable_if<sizeof(_Tp()->__a_value = __create<_Td>()), char>::type
613 __test_atomic_assignable(int);
614 template <typename _Tp, typename _Up>
615 __two __test_atomic_assignable(...);
617 template <typename _Tp, typename _Td>
618 struct __can_assign {
619 static const bool value =
620 sizeof(__test_atomic_assignable<_Tp, _Td>(1)) == sizeof(char);
623 static inline _LIBCPP_CONSTEXPR int __to_gcc_order(memory_order __order) {
624 // Avoid switch statement to make this a constexpr.
625 return __order == memory_order_relaxed ? __ATOMIC_RELAXED:
626 (__order == memory_order_acquire ? __ATOMIC_ACQUIRE:
627 (__order == memory_order_release ? __ATOMIC_RELEASE:
628 (__order == memory_order_seq_cst ? __ATOMIC_SEQ_CST:
629 (__order == memory_order_acq_rel ? __ATOMIC_ACQ_REL:
630 __ATOMIC_CONSUME))));
633 static inline _LIBCPP_CONSTEXPR int __to_gcc_failure_order(memory_order __order) {
634 // Avoid switch statement to make this a constexpr.
635 return __order == memory_order_relaxed ? __ATOMIC_RELAXED:
636 (__order == memory_order_acquire ? __ATOMIC_ACQUIRE:
637 (__order == memory_order_release ? __ATOMIC_RELAXED:
638 (__order == memory_order_seq_cst ? __ATOMIC_SEQ_CST:
639 (__order == memory_order_acq_rel ? __ATOMIC_ACQUIRE:
640 __ATOMIC_CONSUME))));
643 } // namespace __gcc_atomic
645 template <typename _Tp>
648 __gcc_atomic::__can_assign<volatile _Atomic(_Tp)*, _Tp>::value>::type
649 __c11_atomic_init(volatile _Atomic(_Tp)* __a, _Tp __val) {
650 __a->__a_value = __val;
653 template <typename _Tp>
656 !__gcc_atomic::__can_assign<volatile _Atomic(_Tp)*, _Tp>::value &&
657 __gcc_atomic::__can_assign< _Atomic(_Tp)*, _Tp>::value>::type
658 __c11_atomic_init(volatile _Atomic(_Tp)* __a, _Tp __val) {
659 // [atomics.types.generic]p1 guarantees _Tp is trivially copyable. Because
660 // the default operator= in an object is not volatile, a byte-by-byte copy
662 volatile char* to = reinterpret_cast<volatile char*>(&__a->__a_value);
663 volatile char* end = to + sizeof(_Tp);
664 char* from = reinterpret_cast<char*>(&__val);
670 template <typename _Tp>
671 static inline void __c11_atomic_init(_Atomic(_Tp)* __a, _Tp __val) {
672 __a->__a_value = __val;
675 static inline void __c11_atomic_thread_fence(memory_order __order) {
676 __atomic_thread_fence(__gcc_atomic::__to_gcc_order(__order));
679 static inline void __c11_atomic_signal_fence(memory_order __order) {
680 __atomic_signal_fence(__gcc_atomic::__to_gcc_order(__order));
683 template <typename _Tp>
684 static inline void __c11_atomic_store(volatile _Atomic(_Tp)* __a, _Tp __val,
685 memory_order __order) {
686 return __atomic_store(&__a->__a_value, &__val,
687 __gcc_atomic::__to_gcc_order(__order));
690 template <typename _Tp>
691 static inline void __c11_atomic_store(_Atomic(_Tp)* __a, _Tp __val,
692 memory_order __order) {
693 __atomic_store(&__a->__a_value, &__val,
694 __gcc_atomic::__to_gcc_order(__order));
697 template <typename _Tp>
698 static inline _Tp __c11_atomic_load(const volatile _Atomic(_Tp)* __a,
699 memory_order __order) {
701 __atomic_load(&__a->__a_value, &__ret,
702 __gcc_atomic::__to_gcc_order(__order));
706 template <typename _Tp>
707 static inline _Tp __c11_atomic_load(const _Atomic(_Tp)* __a, memory_order __order) {
709 __atomic_load(&__a->__a_value, &__ret,
710 __gcc_atomic::__to_gcc_order(__order));
714 template <typename _Tp>
715 static inline _Tp __c11_atomic_exchange(volatile _Atomic(_Tp)* __a,
716 _Tp __value, memory_order __order) {
718 __atomic_exchange(&__a->__a_value, &__value, &__ret,
719 __gcc_atomic::__to_gcc_order(__order));
723 template <typename _Tp>
724 static inline _Tp __c11_atomic_exchange(_Atomic(_Tp)* __a, _Tp __value,
725 memory_order __order) {
727 __atomic_exchange(&__a->__a_value, &__value, &__ret,
728 __gcc_atomic::__to_gcc_order(__order));
732 template <typename _Tp>
733 static inline bool __c11_atomic_compare_exchange_strong(
734 volatile _Atomic(_Tp)* __a, _Tp* __expected, _Tp __value,
735 memory_order __success, memory_order __failure) {
736 return __atomic_compare_exchange(&__a->__a_value, __expected, &__value,
738 __gcc_atomic::__to_gcc_order(__success),
739 __gcc_atomic::__to_gcc_failure_order(__failure));
742 template <typename _Tp>
743 static inline bool __c11_atomic_compare_exchange_strong(
744 _Atomic(_Tp)* __a, _Tp* __expected, _Tp __value, memory_order __success,
745 memory_order __failure) {
746 return __atomic_compare_exchange(&__a->__a_value, __expected, &__value,
748 __gcc_atomic::__to_gcc_order(__success),
749 __gcc_atomic::__to_gcc_failure_order(__failure));
752 template <typename _Tp>
753 static inline bool __c11_atomic_compare_exchange_weak(
754 volatile _Atomic(_Tp)* __a, _Tp* __expected, _Tp __value,
755 memory_order __success, memory_order __failure) {
756 return __atomic_compare_exchange(&__a->__a_value, __expected, &__value,
758 __gcc_atomic::__to_gcc_order(__success),
759 __gcc_atomic::__to_gcc_failure_order(__failure));
762 template <typename _Tp>
763 static inline bool __c11_atomic_compare_exchange_weak(
764 _Atomic(_Tp)* __a, _Tp* __expected, _Tp __value, memory_order __success,
765 memory_order __failure) {
766 return __atomic_compare_exchange(&__a->__a_value, __expected, &__value,
768 __gcc_atomic::__to_gcc_order(__success),
769 __gcc_atomic::__to_gcc_failure_order(__failure));
772 template <typename _Tp>
773 struct __skip_amt { enum {value = 1}; };
775 template <typename _Tp>
776 struct __skip_amt<_Tp*> { enum {value = sizeof(_Tp)}; };
778 // FIXME: Haven't figured out what the spec says about using arrays with
779 // atomic_fetch_add. Force a failure rather than creating bad behavior.
780 template <typename _Tp>
781 struct __skip_amt<_Tp[]> { };
782 template <typename _Tp, int n>
783 struct __skip_amt<_Tp[n]> { };
785 template <typename _Tp, typename _Td>
786 static inline _Tp __c11_atomic_fetch_add(volatile _Atomic(_Tp)* __a,
787 _Td __delta, memory_order __order) {
788 return __atomic_fetch_add(&__a->__a_value, __delta * __skip_amt<_Tp>::value,
789 __gcc_atomic::__to_gcc_order(__order));
792 template <typename _Tp, typename _Td>
793 static inline _Tp __c11_atomic_fetch_add(_Atomic(_Tp)* __a, _Td __delta,
794 memory_order __order) {
795 return __atomic_fetch_add(&__a->__a_value, __delta * __skip_amt<_Tp>::value,
796 __gcc_atomic::__to_gcc_order(__order));
799 template <typename _Tp, typename _Td>
800 static inline _Tp __c11_atomic_fetch_sub(volatile _Atomic(_Tp)* __a,
801 _Td __delta, memory_order __order) {
802 return __atomic_fetch_sub(&__a->__a_value, __delta * __skip_amt<_Tp>::value,
803 __gcc_atomic::__to_gcc_order(__order));
806 template <typename _Tp, typename _Td>
807 static inline _Tp __c11_atomic_fetch_sub(_Atomic(_Tp)* __a, _Td __delta,
808 memory_order __order) {
809 return __atomic_fetch_sub(&__a->__a_value, __delta * __skip_amt<_Tp>::value,
810 __gcc_atomic::__to_gcc_order(__order));
813 template <typename _Tp>
814 static inline _Tp __c11_atomic_fetch_and(volatile _Atomic(_Tp)* __a,
815 _Tp __pattern, memory_order __order) {
816 return __atomic_fetch_and(&__a->__a_value, __pattern,
817 __gcc_atomic::__to_gcc_order(__order));
820 template <typename _Tp>
821 static inline _Tp __c11_atomic_fetch_and(_Atomic(_Tp)* __a,
822 _Tp __pattern, memory_order __order) {
823 return __atomic_fetch_and(&__a->__a_value, __pattern,
824 __gcc_atomic::__to_gcc_order(__order));
827 template <typename _Tp>
828 static inline _Tp __c11_atomic_fetch_or(volatile _Atomic(_Tp)* __a,
829 _Tp __pattern, memory_order __order) {
830 return __atomic_fetch_or(&__a->__a_value, __pattern,
831 __gcc_atomic::__to_gcc_order(__order));
834 template <typename _Tp>
835 static inline _Tp __c11_atomic_fetch_or(_Atomic(_Tp)* __a, _Tp __pattern,
836 memory_order __order) {
837 return __atomic_fetch_or(&__a->__a_value, __pattern,
838 __gcc_atomic::__to_gcc_order(__order));
841 template <typename _Tp>
842 static inline _Tp __c11_atomic_fetch_xor(volatile _Atomic(_Tp)* __a,
843 _Tp __pattern, memory_order __order) {
844 return __atomic_fetch_xor(&__a->__a_value, __pattern,
845 __gcc_atomic::__to_gcc_order(__order));
848 template <typename _Tp>
849 static inline _Tp __c11_atomic_fetch_xor(_Atomic(_Tp)* __a, _Tp __pattern,
850 memory_order __order) {
851 return __atomic_fetch_xor(&__a->__a_value, __pattern,
852 __gcc_atomic::__to_gcc_order(__order));
854 #endif // _LIBCPP_HAS_GCC_ATOMIC_IMP
857 inline _LIBCPP_INLINE_VISIBILITY
859 kill_dependency(_Tp __y) _NOEXCEPT
864 #if defined(__CLANG_ATOMIC_BOOL_LOCK_FREE)
865 # define ATOMIC_BOOL_LOCK_FREE __CLANG_ATOMIC_BOOL_LOCK_FREE
866 # define ATOMIC_CHAR_LOCK_FREE __CLANG_ATOMIC_CHAR_LOCK_FREE
867 # define ATOMIC_CHAR16_T_LOCK_FREE __CLANG_ATOMIC_CHAR16_T_LOCK_FREE
868 # define ATOMIC_CHAR32_T_LOCK_FREE __CLANG_ATOMIC_CHAR32_T_LOCK_FREE
869 # define ATOMIC_WCHAR_T_LOCK_FREE __CLANG_ATOMIC_WCHAR_T_LOCK_FREE
870 # define ATOMIC_SHORT_LOCK_FREE __CLANG_ATOMIC_SHORT_LOCK_FREE
871 # define ATOMIC_INT_LOCK_FREE __CLANG_ATOMIC_INT_LOCK_FREE
872 # define ATOMIC_LONG_LOCK_FREE __CLANG_ATOMIC_LONG_LOCK_FREE
873 # define ATOMIC_LLONG_LOCK_FREE __CLANG_ATOMIC_LLONG_LOCK_FREE
874 # define ATOMIC_POINTER_LOCK_FREE __CLANG_ATOMIC_POINTER_LOCK_FREE
876 # define ATOMIC_BOOL_LOCK_FREE __GCC_ATOMIC_BOOL_LOCK_FREE
877 # define ATOMIC_CHAR_LOCK_FREE __GCC_ATOMIC_CHAR_LOCK_FREE
878 # define ATOMIC_CHAR16_T_LOCK_FREE __GCC_ATOMIC_CHAR16_T_LOCK_FREE
879 # define ATOMIC_CHAR32_T_LOCK_FREE __GCC_ATOMIC_CHAR32_T_LOCK_FREE
880 # define ATOMIC_WCHAR_T_LOCK_FREE __GCC_ATOMIC_WCHAR_T_LOCK_FREE
881 # define ATOMIC_SHORT_LOCK_FREE __GCC_ATOMIC_SHORT_LOCK_FREE
882 # define ATOMIC_INT_LOCK_FREE __GCC_ATOMIC_INT_LOCK_FREE
883 # define ATOMIC_LONG_LOCK_FREE __GCC_ATOMIC_LONG_LOCK_FREE
884 # define ATOMIC_LLONG_LOCK_FREE __GCC_ATOMIC_LLONG_LOCK_FREE
885 # define ATOMIC_POINTER_LOCK_FREE __GCC_ATOMIC_POINTER_LOCK_FREE
890 template <class _Tp, bool = is_integral<_Tp>::value && !is_same<_Tp, bool>::value>
891 struct __atomic_base // false
893 mutable _Atomic(_Tp) __a_;
895 #if defined(__cpp_lib_atomic_is_always_lock_free)
896 static _LIBCPP_CONSTEXPR bool is_always_lock_free = __atomic_always_lock_free(sizeof(__a_), 0);
899 _LIBCPP_INLINE_VISIBILITY
900 bool is_lock_free() const volatile _NOEXCEPT
902 #if defined(_LIBCPP_HAS_C_ATOMIC_IMP)
903 return __c11_atomic_is_lock_free(sizeof(_Tp));
905 return __atomic_is_lock_free(sizeof(_Tp), 0);
908 _LIBCPP_INLINE_VISIBILITY
909 bool is_lock_free() const _NOEXCEPT
910 {return static_cast<__atomic_base const volatile*>(this)->is_lock_free();}
911 _LIBCPP_INLINE_VISIBILITY
912 void store(_Tp __d, memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT
913 _LIBCPP_CHECK_STORE_MEMORY_ORDER(__m)
914 {__c11_atomic_store(&__a_, __d, __m);}
915 _LIBCPP_INLINE_VISIBILITY
916 void store(_Tp __d, memory_order __m = memory_order_seq_cst) _NOEXCEPT
917 _LIBCPP_CHECK_STORE_MEMORY_ORDER(__m)
918 {__c11_atomic_store(&__a_, __d, __m);}
919 _LIBCPP_INLINE_VISIBILITY
920 _Tp load(memory_order __m = memory_order_seq_cst) const volatile _NOEXCEPT
921 _LIBCPP_CHECK_LOAD_MEMORY_ORDER(__m)
922 {return __c11_atomic_load(&__a_, __m);}
923 _LIBCPP_INLINE_VISIBILITY
924 _Tp load(memory_order __m = memory_order_seq_cst) const _NOEXCEPT
925 _LIBCPP_CHECK_LOAD_MEMORY_ORDER(__m)
926 {return __c11_atomic_load(&__a_, __m);}
927 _LIBCPP_INLINE_VISIBILITY
928 operator _Tp() const volatile _NOEXCEPT {return load();}
929 _LIBCPP_INLINE_VISIBILITY
930 operator _Tp() const _NOEXCEPT {return load();}
931 _LIBCPP_INLINE_VISIBILITY
932 _Tp exchange(_Tp __d, memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT
933 {return __c11_atomic_exchange(&__a_, __d, __m);}
934 _LIBCPP_INLINE_VISIBILITY
935 _Tp exchange(_Tp __d, memory_order __m = memory_order_seq_cst) _NOEXCEPT
936 {return __c11_atomic_exchange(&__a_, __d, __m);}
937 _LIBCPP_INLINE_VISIBILITY
938 bool compare_exchange_weak(_Tp& __e, _Tp __d,
939 memory_order __s, memory_order __f) volatile _NOEXCEPT
940 _LIBCPP_CHECK_EXCHANGE_MEMORY_ORDER(__s, __f)
941 {return __c11_atomic_compare_exchange_weak(&__a_, &__e, __d, __s, __f);}
942 _LIBCPP_INLINE_VISIBILITY
943 bool compare_exchange_weak(_Tp& __e, _Tp __d,
944 memory_order __s, memory_order __f) _NOEXCEPT
945 _LIBCPP_CHECK_EXCHANGE_MEMORY_ORDER(__s, __f)
946 {return __c11_atomic_compare_exchange_weak(&__a_, &__e, __d, __s, __f);}
947 _LIBCPP_INLINE_VISIBILITY
948 bool compare_exchange_strong(_Tp& __e, _Tp __d,
949 memory_order __s, memory_order __f) volatile _NOEXCEPT
950 _LIBCPP_CHECK_EXCHANGE_MEMORY_ORDER(__s, __f)
951 {return __c11_atomic_compare_exchange_strong(&__a_, &__e, __d, __s, __f);}
952 _LIBCPP_INLINE_VISIBILITY
953 bool compare_exchange_strong(_Tp& __e, _Tp __d,
954 memory_order __s, memory_order __f) _NOEXCEPT
955 _LIBCPP_CHECK_EXCHANGE_MEMORY_ORDER(__s, __f)
956 {return __c11_atomic_compare_exchange_strong(&__a_, &__e, __d, __s, __f);}
957 _LIBCPP_INLINE_VISIBILITY
958 bool compare_exchange_weak(_Tp& __e, _Tp __d,
959 memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT
960 {return __c11_atomic_compare_exchange_weak(&__a_, &__e, __d, __m, __m);}
961 _LIBCPP_INLINE_VISIBILITY
962 bool compare_exchange_weak(_Tp& __e, _Tp __d,
963 memory_order __m = memory_order_seq_cst) _NOEXCEPT
964 {return __c11_atomic_compare_exchange_weak(&__a_, &__e, __d, __m, __m);}
965 _LIBCPP_INLINE_VISIBILITY
966 bool compare_exchange_strong(_Tp& __e, _Tp __d,
967 memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT
968 {return __c11_atomic_compare_exchange_strong(&__a_, &__e, __d, __m, __m);}
969 _LIBCPP_INLINE_VISIBILITY
970 bool compare_exchange_strong(_Tp& __e, _Tp __d,
971 memory_order __m = memory_order_seq_cst) _NOEXCEPT
972 {return __c11_atomic_compare_exchange_strong(&__a_, &__e, __d, __m, __m);}
974 _LIBCPP_INLINE_VISIBILITY
975 #ifndef _LIBCPP_CXX03_LANG
976 __atomic_base() _NOEXCEPT = default;
978 __atomic_base() _NOEXCEPT : __a_() {}
979 #endif // _LIBCPP_CXX03_LANG
981 _LIBCPP_INLINE_VISIBILITY
982 _LIBCPP_CONSTEXPR __atomic_base(_Tp __d) _NOEXCEPT : __a_(__d) {}
983 #ifndef _LIBCPP_CXX03_LANG
984 __atomic_base(const __atomic_base&) = delete;
985 __atomic_base& operator=(const __atomic_base&) = delete;
986 __atomic_base& operator=(const __atomic_base&) volatile = delete;
989 __atomic_base(const __atomic_base&);
990 __atomic_base& operator=(const __atomic_base&);
991 __atomic_base& operator=(const __atomic_base&) volatile;
995 #if defined(__cpp_lib_atomic_is_always_lock_free)
996 template <class _Tp, bool __b>
997 _LIBCPP_CONSTEXPR bool __atomic_base<_Tp, __b>::is_always_lock_free;
1002 template <class _Tp>
1003 struct __atomic_base<_Tp, true>
1004 : public __atomic_base<_Tp, false>
1006 typedef __atomic_base<_Tp, false> __base;
1007 _LIBCPP_INLINE_VISIBILITY
1008 __atomic_base() _NOEXCEPT _LIBCPP_DEFAULT
1009 _LIBCPP_INLINE_VISIBILITY
1010 _LIBCPP_CONSTEXPR __atomic_base(_Tp __d) _NOEXCEPT : __base(__d) {}
1012 _LIBCPP_INLINE_VISIBILITY
1013 _Tp fetch_add(_Tp __op, memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT
1014 {return __c11_atomic_fetch_add(&this->__a_, __op, __m);}
1015 _LIBCPP_INLINE_VISIBILITY
1016 _Tp fetch_add(_Tp __op, memory_order __m = memory_order_seq_cst) _NOEXCEPT
1017 {return __c11_atomic_fetch_add(&this->__a_, __op, __m);}
1018 _LIBCPP_INLINE_VISIBILITY
1019 _Tp fetch_sub(_Tp __op, memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT
1020 {return __c11_atomic_fetch_sub(&this->__a_, __op, __m);}
1021 _LIBCPP_INLINE_VISIBILITY
1022 _Tp fetch_sub(_Tp __op, memory_order __m = memory_order_seq_cst) _NOEXCEPT
1023 {return __c11_atomic_fetch_sub(&this->__a_, __op, __m);}
1024 _LIBCPP_INLINE_VISIBILITY
1025 _Tp fetch_and(_Tp __op, memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT
1026 {return __c11_atomic_fetch_and(&this->__a_, __op, __m);}
1027 _LIBCPP_INLINE_VISIBILITY
1028 _Tp fetch_and(_Tp __op, memory_order __m = memory_order_seq_cst) _NOEXCEPT
1029 {return __c11_atomic_fetch_and(&this->__a_, __op, __m);}
1030 _LIBCPP_INLINE_VISIBILITY
1031 _Tp fetch_or(_Tp __op, memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT
1032 {return __c11_atomic_fetch_or(&this->__a_, __op, __m);}
1033 _LIBCPP_INLINE_VISIBILITY
1034 _Tp fetch_or(_Tp __op, memory_order __m = memory_order_seq_cst) _NOEXCEPT
1035 {return __c11_atomic_fetch_or(&this->__a_, __op, __m);}
1036 _LIBCPP_INLINE_VISIBILITY
1037 _Tp fetch_xor(_Tp __op, memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT
1038 {return __c11_atomic_fetch_xor(&this->__a_, __op, __m);}
1039 _LIBCPP_INLINE_VISIBILITY
1040 _Tp fetch_xor(_Tp __op, memory_order __m = memory_order_seq_cst) _NOEXCEPT
1041 {return __c11_atomic_fetch_xor(&this->__a_, __op, __m);}
1043 _LIBCPP_INLINE_VISIBILITY
1044 _Tp operator++(int) volatile _NOEXCEPT {return fetch_add(_Tp(1));}
1045 _LIBCPP_INLINE_VISIBILITY
1046 _Tp operator++(int) _NOEXCEPT {return fetch_add(_Tp(1));}
1047 _LIBCPP_INLINE_VISIBILITY
1048 _Tp operator--(int) volatile _NOEXCEPT {return fetch_sub(_Tp(1));}
1049 _LIBCPP_INLINE_VISIBILITY
1050 _Tp operator--(int) _NOEXCEPT {return fetch_sub(_Tp(1));}
1051 _LIBCPP_INLINE_VISIBILITY
1052 _Tp operator++() volatile _NOEXCEPT {return fetch_add(_Tp(1)) + _Tp(1);}
1053 _LIBCPP_INLINE_VISIBILITY
1054 _Tp operator++() _NOEXCEPT {return fetch_add(_Tp(1)) + _Tp(1);}
1055 _LIBCPP_INLINE_VISIBILITY
1056 _Tp operator--() volatile _NOEXCEPT {return fetch_sub(_Tp(1)) - _Tp(1);}
1057 _LIBCPP_INLINE_VISIBILITY
1058 _Tp operator--() _NOEXCEPT {return fetch_sub(_Tp(1)) - _Tp(1);}
1059 _LIBCPP_INLINE_VISIBILITY
1060 _Tp operator+=(_Tp __op) volatile _NOEXCEPT {return fetch_add(__op) + __op;}
1061 _LIBCPP_INLINE_VISIBILITY
1062 _Tp operator+=(_Tp __op) _NOEXCEPT {return fetch_add(__op) + __op;}
1063 _LIBCPP_INLINE_VISIBILITY
1064 _Tp operator-=(_Tp __op) volatile _NOEXCEPT {return fetch_sub(__op) - __op;}
1065 _LIBCPP_INLINE_VISIBILITY
1066 _Tp operator-=(_Tp __op) _NOEXCEPT {return fetch_sub(__op) - __op;}
1067 _LIBCPP_INLINE_VISIBILITY
1068 _Tp operator&=(_Tp __op) volatile _NOEXCEPT {return fetch_and(__op) & __op;}
1069 _LIBCPP_INLINE_VISIBILITY
1070 _Tp operator&=(_Tp __op) _NOEXCEPT {return fetch_and(__op) & __op;}
1071 _LIBCPP_INLINE_VISIBILITY
1072 _Tp operator|=(_Tp __op) volatile _NOEXCEPT {return fetch_or(__op) | __op;}
1073 _LIBCPP_INLINE_VISIBILITY
1074 _Tp operator|=(_Tp __op) _NOEXCEPT {return fetch_or(__op) | __op;}
1075 _LIBCPP_INLINE_VISIBILITY
1076 _Tp operator^=(_Tp __op) volatile _NOEXCEPT {return fetch_xor(__op) ^ __op;}
1077 _LIBCPP_INLINE_VISIBILITY
1078 _Tp operator^=(_Tp __op) _NOEXCEPT {return fetch_xor(__op) ^ __op;}
1083 template <class _Tp>
1085 : public __atomic_base<_Tp>
1087 typedef __atomic_base<_Tp> __base;
1088 _LIBCPP_INLINE_VISIBILITY
1089 atomic() _NOEXCEPT _LIBCPP_DEFAULT
1090 _LIBCPP_INLINE_VISIBILITY
1091 _LIBCPP_CONSTEXPR atomic(_Tp __d) _NOEXCEPT : __base(__d) {}
1093 _LIBCPP_INLINE_VISIBILITY
1094 _Tp operator=(_Tp __d) volatile _NOEXCEPT
1095 {__base::store(__d); return __d;}
1096 _LIBCPP_INLINE_VISIBILITY
1097 _Tp operator=(_Tp __d) _NOEXCEPT
1098 {__base::store(__d); return __d;}
1103 template <class _Tp>
1105 : public __atomic_base<_Tp*>
1107 typedef __atomic_base<_Tp*> __base;
1108 _LIBCPP_INLINE_VISIBILITY
1109 atomic() _NOEXCEPT _LIBCPP_DEFAULT
1110 _LIBCPP_INLINE_VISIBILITY
1111 _LIBCPP_CONSTEXPR atomic(_Tp* __d) _NOEXCEPT : __base(__d) {}
1113 _LIBCPP_INLINE_VISIBILITY
1114 _Tp* operator=(_Tp* __d) volatile _NOEXCEPT
1115 {__base::store(__d); return __d;}
1116 _LIBCPP_INLINE_VISIBILITY
1117 _Tp* operator=(_Tp* __d) _NOEXCEPT
1118 {__base::store(__d); return __d;}
1120 _LIBCPP_INLINE_VISIBILITY
1121 _Tp* fetch_add(ptrdiff_t __op, memory_order __m = memory_order_seq_cst)
1123 {return __c11_atomic_fetch_add(&this->__a_, __op, __m);}
1124 _LIBCPP_INLINE_VISIBILITY
1125 _Tp* fetch_add(ptrdiff_t __op, memory_order __m = memory_order_seq_cst) _NOEXCEPT
1126 {return __c11_atomic_fetch_add(&this->__a_, __op, __m);}
1127 _LIBCPP_INLINE_VISIBILITY
1128 _Tp* fetch_sub(ptrdiff_t __op, memory_order __m = memory_order_seq_cst)
1130 {return __c11_atomic_fetch_sub(&this->__a_, __op, __m);}
1131 _LIBCPP_INLINE_VISIBILITY
1132 _Tp* fetch_sub(ptrdiff_t __op, memory_order __m = memory_order_seq_cst) _NOEXCEPT
1133 {return __c11_atomic_fetch_sub(&this->__a_, __op, __m);}
1135 _LIBCPP_INLINE_VISIBILITY
1136 _Tp* operator++(int) volatile _NOEXCEPT {return fetch_add(1);}
1137 _LIBCPP_INLINE_VISIBILITY
1138 _Tp* operator++(int) _NOEXCEPT {return fetch_add(1);}
1139 _LIBCPP_INLINE_VISIBILITY
1140 _Tp* operator--(int) volatile _NOEXCEPT {return fetch_sub(1);}
1141 _LIBCPP_INLINE_VISIBILITY
1142 _Tp* operator--(int) _NOEXCEPT {return fetch_sub(1);}
1143 _LIBCPP_INLINE_VISIBILITY
1144 _Tp* operator++() volatile _NOEXCEPT {return fetch_add(1) + 1;}
1145 _LIBCPP_INLINE_VISIBILITY
1146 _Tp* operator++() _NOEXCEPT {return fetch_add(1) + 1;}
1147 _LIBCPP_INLINE_VISIBILITY
1148 _Tp* operator--() volatile _NOEXCEPT {return fetch_sub(1) - 1;}
1149 _LIBCPP_INLINE_VISIBILITY
1150 _Tp* operator--() _NOEXCEPT {return fetch_sub(1) - 1;}
1151 _LIBCPP_INLINE_VISIBILITY
1152 _Tp* operator+=(ptrdiff_t __op) volatile _NOEXCEPT {return fetch_add(__op) + __op;}
1153 _LIBCPP_INLINE_VISIBILITY
1154 _Tp* operator+=(ptrdiff_t __op) _NOEXCEPT {return fetch_add(__op) + __op;}
1155 _LIBCPP_INLINE_VISIBILITY
1156 _Tp* operator-=(ptrdiff_t __op) volatile _NOEXCEPT {return fetch_sub(__op) - __op;}
1157 _LIBCPP_INLINE_VISIBILITY
1158 _Tp* operator-=(ptrdiff_t __op) _NOEXCEPT {return fetch_sub(__op) - __op;}
1161 // atomic_is_lock_free
1163 template <class _Tp>
1164 inline _LIBCPP_INLINE_VISIBILITY
1166 atomic_is_lock_free(const volatile atomic<_Tp>* __o) _NOEXCEPT
1168 return __o->is_lock_free();
1171 template <class _Tp>
1172 inline _LIBCPP_INLINE_VISIBILITY
1174 atomic_is_lock_free(const atomic<_Tp>* __o) _NOEXCEPT
1176 return __o->is_lock_free();
1181 template <class _Tp>
1182 inline _LIBCPP_INLINE_VISIBILITY
1184 atomic_init(volatile atomic<_Tp>* __o, _Tp __d) _NOEXCEPT
1186 __c11_atomic_init(&__o->__a_, __d);
1189 template <class _Tp>
1190 inline _LIBCPP_INLINE_VISIBILITY
1192 atomic_init(atomic<_Tp>* __o, _Tp __d) _NOEXCEPT
1194 __c11_atomic_init(&__o->__a_, __d);
1199 template <class _Tp>
1200 inline _LIBCPP_INLINE_VISIBILITY
1202 atomic_store(volatile atomic<_Tp>* __o, _Tp __d) _NOEXCEPT
1207 template <class _Tp>
1208 inline _LIBCPP_INLINE_VISIBILITY
1210 atomic_store(atomic<_Tp>* __o, _Tp __d) _NOEXCEPT
1215 // atomic_store_explicit
1217 template <class _Tp>
1218 inline _LIBCPP_INLINE_VISIBILITY
1220 atomic_store_explicit(volatile atomic<_Tp>* __o, _Tp __d, memory_order __m) _NOEXCEPT
1221 _LIBCPP_CHECK_STORE_MEMORY_ORDER(__m)
1223 __o->store(__d, __m);
1226 template <class _Tp>
1227 inline _LIBCPP_INLINE_VISIBILITY
1229 atomic_store_explicit(atomic<_Tp>* __o, _Tp __d, memory_order __m) _NOEXCEPT
1230 _LIBCPP_CHECK_STORE_MEMORY_ORDER(__m)
1232 __o->store(__d, __m);
1237 template <class _Tp>
1238 inline _LIBCPP_INLINE_VISIBILITY
1240 atomic_load(const volatile atomic<_Tp>* __o) _NOEXCEPT
1245 template <class _Tp>
1246 inline _LIBCPP_INLINE_VISIBILITY
1248 atomic_load(const atomic<_Tp>* __o) _NOEXCEPT
1253 // atomic_load_explicit
1255 template <class _Tp>
1256 inline _LIBCPP_INLINE_VISIBILITY
1258 atomic_load_explicit(const volatile atomic<_Tp>* __o, memory_order __m) _NOEXCEPT
1259 _LIBCPP_CHECK_LOAD_MEMORY_ORDER(__m)
1261 return __o->load(__m);
1264 template <class _Tp>
1265 inline _LIBCPP_INLINE_VISIBILITY
1267 atomic_load_explicit(const atomic<_Tp>* __o, memory_order __m) _NOEXCEPT
1268 _LIBCPP_CHECK_LOAD_MEMORY_ORDER(__m)
1270 return __o->load(__m);
1275 template <class _Tp>
1276 inline _LIBCPP_INLINE_VISIBILITY
1278 atomic_exchange(volatile atomic<_Tp>* __o, _Tp __d) _NOEXCEPT
1280 return __o->exchange(__d);
1283 template <class _Tp>
1284 inline _LIBCPP_INLINE_VISIBILITY
1286 atomic_exchange(atomic<_Tp>* __o, _Tp __d) _NOEXCEPT
1288 return __o->exchange(__d);
1291 // atomic_exchange_explicit
1293 template <class _Tp>
1294 inline _LIBCPP_INLINE_VISIBILITY
1296 atomic_exchange_explicit(volatile atomic<_Tp>* __o, _Tp __d, memory_order __m) _NOEXCEPT
1298 return __o->exchange(__d, __m);
1301 template <class _Tp>
1302 inline _LIBCPP_INLINE_VISIBILITY
1304 atomic_exchange_explicit(atomic<_Tp>* __o, _Tp __d, memory_order __m) _NOEXCEPT
1306 return __o->exchange(__d, __m);
1309 // atomic_compare_exchange_weak
1311 template <class _Tp>
1312 inline _LIBCPP_INLINE_VISIBILITY
1314 atomic_compare_exchange_weak(volatile atomic<_Tp>* __o, _Tp* __e, _Tp __d) _NOEXCEPT
1316 return __o->compare_exchange_weak(*__e, __d);
1319 template <class _Tp>
1320 inline _LIBCPP_INLINE_VISIBILITY
1322 atomic_compare_exchange_weak(atomic<_Tp>* __o, _Tp* __e, _Tp __d) _NOEXCEPT
1324 return __o->compare_exchange_weak(*__e, __d);
1327 // atomic_compare_exchange_strong
1329 template <class _Tp>
1330 inline _LIBCPP_INLINE_VISIBILITY
1332 atomic_compare_exchange_strong(volatile atomic<_Tp>* __o, _Tp* __e, _Tp __d) _NOEXCEPT
1334 return __o->compare_exchange_strong(*__e, __d);
1337 template <class _Tp>
1338 inline _LIBCPP_INLINE_VISIBILITY
1340 atomic_compare_exchange_strong(atomic<_Tp>* __o, _Tp* __e, _Tp __d) _NOEXCEPT
1342 return __o->compare_exchange_strong(*__e, __d);
1345 // atomic_compare_exchange_weak_explicit
1347 template <class _Tp>
1348 inline _LIBCPP_INLINE_VISIBILITY
1350 atomic_compare_exchange_weak_explicit(volatile atomic<_Tp>* __o, _Tp* __e,
1352 memory_order __s, memory_order __f) _NOEXCEPT
1353 _LIBCPP_CHECK_EXCHANGE_MEMORY_ORDER(__s, __f)
1355 return __o->compare_exchange_weak(*__e, __d, __s, __f);
1358 template <class _Tp>
1359 inline _LIBCPP_INLINE_VISIBILITY
1361 atomic_compare_exchange_weak_explicit(atomic<_Tp>* __o, _Tp* __e, _Tp __d,
1362 memory_order __s, memory_order __f) _NOEXCEPT
1363 _LIBCPP_CHECK_EXCHANGE_MEMORY_ORDER(__s, __f)
1365 return __o->compare_exchange_weak(*__e, __d, __s, __f);
1368 // atomic_compare_exchange_strong_explicit
1370 template <class _Tp>
1371 inline _LIBCPP_INLINE_VISIBILITY
1373 atomic_compare_exchange_strong_explicit(volatile atomic<_Tp>* __o,
1375 memory_order __s, memory_order __f) _NOEXCEPT
1376 _LIBCPP_CHECK_EXCHANGE_MEMORY_ORDER(__s, __f)
1378 return __o->compare_exchange_strong(*__e, __d, __s, __f);
1381 template <class _Tp>
1382 inline _LIBCPP_INLINE_VISIBILITY
1384 atomic_compare_exchange_strong_explicit(atomic<_Tp>* __o, _Tp* __e,
1386 memory_order __s, memory_order __f) _NOEXCEPT
1387 _LIBCPP_CHECK_EXCHANGE_MEMORY_ORDER(__s, __f)
1389 return __o->compare_exchange_strong(*__e, __d, __s, __f);
1394 template <class _Tp>
1395 inline _LIBCPP_INLINE_VISIBILITY
1398 is_integral<_Tp>::value && !is_same<_Tp, bool>::value,
1401 atomic_fetch_add(volatile atomic<_Tp>* __o, _Tp __op) _NOEXCEPT
1403 return __o->fetch_add(__op);
1406 template <class _Tp>
1407 inline _LIBCPP_INLINE_VISIBILITY
1410 is_integral<_Tp>::value && !is_same<_Tp, bool>::value,
1413 atomic_fetch_add(atomic<_Tp>* __o, _Tp __op) _NOEXCEPT
1415 return __o->fetch_add(__op);
1418 template <class _Tp>
1419 inline _LIBCPP_INLINE_VISIBILITY
1421 atomic_fetch_add(volatile atomic<_Tp*>* __o, ptrdiff_t __op) _NOEXCEPT
1423 return __o->fetch_add(__op);
1426 template <class _Tp>
1427 inline _LIBCPP_INLINE_VISIBILITY
1429 atomic_fetch_add(atomic<_Tp*>* __o, ptrdiff_t __op) _NOEXCEPT
1431 return __o->fetch_add(__op);
1434 // atomic_fetch_add_explicit
1436 template <class _Tp>
1437 inline _LIBCPP_INLINE_VISIBILITY
1440 is_integral<_Tp>::value && !is_same<_Tp, bool>::value,
1443 atomic_fetch_add_explicit(volatile atomic<_Tp>* __o, _Tp __op, memory_order __m) _NOEXCEPT
1445 return __o->fetch_add(__op, __m);
1448 template <class _Tp>
1449 inline _LIBCPP_INLINE_VISIBILITY
1452 is_integral<_Tp>::value && !is_same<_Tp, bool>::value,
1455 atomic_fetch_add_explicit(atomic<_Tp>* __o, _Tp __op, memory_order __m) _NOEXCEPT
1457 return __o->fetch_add(__op, __m);
1460 template <class _Tp>
1461 inline _LIBCPP_INLINE_VISIBILITY
1463 atomic_fetch_add_explicit(volatile atomic<_Tp*>* __o, ptrdiff_t __op,
1464 memory_order __m) _NOEXCEPT
1466 return __o->fetch_add(__op, __m);
1469 template <class _Tp>
1470 inline _LIBCPP_INLINE_VISIBILITY
1472 atomic_fetch_add_explicit(atomic<_Tp*>* __o, ptrdiff_t __op, memory_order __m) _NOEXCEPT
1474 return __o->fetch_add(__op, __m);
1479 template <class _Tp>
1480 inline _LIBCPP_INLINE_VISIBILITY
1483 is_integral<_Tp>::value && !is_same<_Tp, bool>::value,
1486 atomic_fetch_sub(volatile atomic<_Tp>* __o, _Tp __op) _NOEXCEPT
1488 return __o->fetch_sub(__op);
1491 template <class _Tp>
1492 inline _LIBCPP_INLINE_VISIBILITY
1495 is_integral<_Tp>::value && !is_same<_Tp, bool>::value,
1498 atomic_fetch_sub(atomic<_Tp>* __o, _Tp __op) _NOEXCEPT
1500 return __o->fetch_sub(__op);
1503 template <class _Tp>
1504 inline _LIBCPP_INLINE_VISIBILITY
1506 atomic_fetch_sub(volatile atomic<_Tp*>* __o, ptrdiff_t __op) _NOEXCEPT
1508 return __o->fetch_sub(__op);
1511 template <class _Tp>
1512 inline _LIBCPP_INLINE_VISIBILITY
1514 atomic_fetch_sub(atomic<_Tp*>* __o, ptrdiff_t __op) _NOEXCEPT
1516 return __o->fetch_sub(__op);
1519 // atomic_fetch_sub_explicit
1521 template <class _Tp>
1522 inline _LIBCPP_INLINE_VISIBILITY
1525 is_integral<_Tp>::value && !is_same<_Tp, bool>::value,
1528 atomic_fetch_sub_explicit(volatile atomic<_Tp>* __o, _Tp __op, memory_order __m) _NOEXCEPT
1530 return __o->fetch_sub(__op, __m);
1533 template <class _Tp>
1534 inline _LIBCPP_INLINE_VISIBILITY
1537 is_integral<_Tp>::value && !is_same<_Tp, bool>::value,
1540 atomic_fetch_sub_explicit(atomic<_Tp>* __o, _Tp __op, memory_order __m) _NOEXCEPT
1542 return __o->fetch_sub(__op, __m);
1545 template <class _Tp>
1546 inline _LIBCPP_INLINE_VISIBILITY
1548 atomic_fetch_sub_explicit(volatile atomic<_Tp*>* __o, ptrdiff_t __op,
1549 memory_order __m) _NOEXCEPT
1551 return __o->fetch_sub(__op, __m);
1554 template <class _Tp>
1555 inline _LIBCPP_INLINE_VISIBILITY
1557 atomic_fetch_sub_explicit(atomic<_Tp*>* __o, ptrdiff_t __op, memory_order __m) _NOEXCEPT
1559 return __o->fetch_sub(__op, __m);
1564 template <class _Tp>
1565 inline _LIBCPP_INLINE_VISIBILITY
1568 is_integral<_Tp>::value && !is_same<_Tp, bool>::value,
1571 atomic_fetch_and(volatile atomic<_Tp>* __o, _Tp __op) _NOEXCEPT
1573 return __o->fetch_and(__op);
1576 template <class _Tp>
1577 inline _LIBCPP_INLINE_VISIBILITY
1580 is_integral<_Tp>::value && !is_same<_Tp, bool>::value,
1583 atomic_fetch_and(atomic<_Tp>* __o, _Tp __op) _NOEXCEPT
1585 return __o->fetch_and(__op);
1588 // atomic_fetch_and_explicit
1590 template <class _Tp>
1591 inline _LIBCPP_INLINE_VISIBILITY
1594 is_integral<_Tp>::value && !is_same<_Tp, bool>::value,
1597 atomic_fetch_and_explicit(volatile atomic<_Tp>* __o, _Tp __op, memory_order __m) _NOEXCEPT
1599 return __o->fetch_and(__op, __m);
1602 template <class _Tp>
1603 inline _LIBCPP_INLINE_VISIBILITY
1606 is_integral<_Tp>::value && !is_same<_Tp, bool>::value,
1609 atomic_fetch_and_explicit(atomic<_Tp>* __o, _Tp __op, memory_order __m) _NOEXCEPT
1611 return __o->fetch_and(__op, __m);
1616 template <class _Tp>
1617 inline _LIBCPP_INLINE_VISIBILITY
1620 is_integral<_Tp>::value && !is_same<_Tp, bool>::value,
1623 atomic_fetch_or(volatile atomic<_Tp>* __o, _Tp __op) _NOEXCEPT
1625 return __o->fetch_or(__op);
1628 template <class _Tp>
1629 inline _LIBCPP_INLINE_VISIBILITY
1632 is_integral<_Tp>::value && !is_same<_Tp, bool>::value,
1635 atomic_fetch_or(atomic<_Tp>* __o, _Tp __op) _NOEXCEPT
1637 return __o->fetch_or(__op);
1640 // atomic_fetch_or_explicit
1642 template <class _Tp>
1643 inline _LIBCPP_INLINE_VISIBILITY
1646 is_integral<_Tp>::value && !is_same<_Tp, bool>::value,
1649 atomic_fetch_or_explicit(volatile atomic<_Tp>* __o, _Tp __op, memory_order __m) _NOEXCEPT
1651 return __o->fetch_or(__op, __m);
1654 template <class _Tp>
1655 inline _LIBCPP_INLINE_VISIBILITY
1658 is_integral<_Tp>::value && !is_same<_Tp, bool>::value,
1661 atomic_fetch_or_explicit(atomic<_Tp>* __o, _Tp __op, memory_order __m) _NOEXCEPT
1663 return __o->fetch_or(__op, __m);
1668 template <class _Tp>
1669 inline _LIBCPP_INLINE_VISIBILITY
1672 is_integral<_Tp>::value && !is_same<_Tp, bool>::value,
1675 atomic_fetch_xor(volatile atomic<_Tp>* __o, _Tp __op) _NOEXCEPT
1677 return __o->fetch_xor(__op);
1680 template <class _Tp>
1681 inline _LIBCPP_INLINE_VISIBILITY
1684 is_integral<_Tp>::value && !is_same<_Tp, bool>::value,
1687 atomic_fetch_xor(atomic<_Tp>* __o, _Tp __op) _NOEXCEPT
1689 return __o->fetch_xor(__op);
1692 // atomic_fetch_xor_explicit
1694 template <class _Tp>
1695 inline _LIBCPP_INLINE_VISIBILITY
1698 is_integral<_Tp>::value && !is_same<_Tp, bool>::value,
1701 atomic_fetch_xor_explicit(volatile atomic<_Tp>* __o, _Tp __op, memory_order __m) _NOEXCEPT
1703 return __o->fetch_xor(__op, __m);
1706 template <class _Tp>
1707 inline _LIBCPP_INLINE_VISIBILITY
1710 is_integral<_Tp>::value && !is_same<_Tp, bool>::value,
1713 atomic_fetch_xor_explicit(atomic<_Tp>* __o, _Tp __op, memory_order __m) _NOEXCEPT
1715 return __o->fetch_xor(__op, __m);
1718 // flag type and operations
1720 typedef struct atomic_flag
1724 _LIBCPP_INLINE_VISIBILITY
1725 bool test_and_set(memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT
1726 {return __c11_atomic_exchange(&__a_, true, __m);}
1727 _LIBCPP_INLINE_VISIBILITY
1728 bool test_and_set(memory_order __m = memory_order_seq_cst) _NOEXCEPT
1729 {return __c11_atomic_exchange(&__a_, true, __m);}
1730 _LIBCPP_INLINE_VISIBILITY
1731 void clear(memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT
1732 {__c11_atomic_store(&__a_, false, __m);}
1733 _LIBCPP_INLINE_VISIBILITY
1734 void clear(memory_order __m = memory_order_seq_cst) _NOEXCEPT
1735 {__c11_atomic_store(&__a_, false, __m);}
1737 _LIBCPP_INLINE_VISIBILITY
1738 #ifndef _LIBCPP_CXX03_LANG
1739 atomic_flag() _NOEXCEPT = default;
1741 atomic_flag() _NOEXCEPT : __a_() {}
1742 #endif // _LIBCPP_CXX03_LANG
1744 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
1745 atomic_flag(bool __b) _NOEXCEPT : __a_(__b) {} // EXTENSION
1747 #ifndef _LIBCPP_CXX03_LANG
1748 atomic_flag(const atomic_flag&) = delete;
1749 atomic_flag& operator=(const atomic_flag&) = delete;
1750 atomic_flag& operator=(const atomic_flag&) volatile = delete;
1753 atomic_flag(const atomic_flag&);
1754 atomic_flag& operator=(const atomic_flag&);
1755 atomic_flag& operator=(const atomic_flag&) volatile;
1759 inline _LIBCPP_INLINE_VISIBILITY
1761 atomic_flag_test_and_set(volatile atomic_flag* __o) _NOEXCEPT
1763 return __o->test_and_set();
1766 inline _LIBCPP_INLINE_VISIBILITY
1768 atomic_flag_test_and_set(atomic_flag* __o) _NOEXCEPT
1770 return __o->test_and_set();
1773 inline _LIBCPP_INLINE_VISIBILITY
1775 atomic_flag_test_and_set_explicit(volatile atomic_flag* __o, memory_order __m) _NOEXCEPT
1777 return __o->test_and_set(__m);
1780 inline _LIBCPP_INLINE_VISIBILITY
1782 atomic_flag_test_and_set_explicit(atomic_flag* __o, memory_order __m) _NOEXCEPT
1784 return __o->test_and_set(__m);
1787 inline _LIBCPP_INLINE_VISIBILITY
1789 atomic_flag_clear(volatile atomic_flag* __o) _NOEXCEPT
1794 inline _LIBCPP_INLINE_VISIBILITY
1796 atomic_flag_clear(atomic_flag* __o) _NOEXCEPT
1801 inline _LIBCPP_INLINE_VISIBILITY
1803 atomic_flag_clear_explicit(volatile atomic_flag* __o, memory_order __m) _NOEXCEPT
1808 inline _LIBCPP_INLINE_VISIBILITY
1810 atomic_flag_clear_explicit(atomic_flag* __o, memory_order __m) _NOEXCEPT
1817 inline _LIBCPP_INLINE_VISIBILITY
1819 atomic_thread_fence(memory_order __m) _NOEXCEPT
1821 __c11_atomic_thread_fence(__m);
1824 inline _LIBCPP_INLINE_VISIBILITY
1826 atomic_signal_fence(memory_order __m) _NOEXCEPT
1828 __c11_atomic_signal_fence(__m);
1831 // Atomics for standard typedef types
1833 typedef atomic<bool> atomic_bool;
1834 typedef atomic<char> atomic_char;
1835 typedef atomic<signed char> atomic_schar;
1836 typedef atomic<unsigned char> atomic_uchar;
1837 typedef atomic<short> atomic_short;
1838 typedef atomic<unsigned short> atomic_ushort;
1839 typedef atomic<int> atomic_int;
1840 typedef atomic<unsigned int> atomic_uint;
1841 typedef atomic<long> atomic_long;
1842 typedef atomic<unsigned long> atomic_ulong;
1843 typedef atomic<long long> atomic_llong;
1844 typedef atomic<unsigned long long> atomic_ullong;
1845 typedef atomic<char16_t> atomic_char16_t;
1846 typedef atomic<char32_t> atomic_char32_t;
1847 typedef atomic<wchar_t> atomic_wchar_t;
1849 typedef atomic<int_least8_t> atomic_int_least8_t;
1850 typedef atomic<uint_least8_t> atomic_uint_least8_t;
1851 typedef atomic<int_least16_t> atomic_int_least16_t;
1852 typedef atomic<uint_least16_t> atomic_uint_least16_t;
1853 typedef atomic<int_least32_t> atomic_int_least32_t;
1854 typedef atomic<uint_least32_t> atomic_uint_least32_t;
1855 typedef atomic<int_least64_t> atomic_int_least64_t;
1856 typedef atomic<uint_least64_t> atomic_uint_least64_t;
1858 typedef atomic<int_fast8_t> atomic_int_fast8_t;
1859 typedef atomic<uint_fast8_t> atomic_uint_fast8_t;
1860 typedef atomic<int_fast16_t> atomic_int_fast16_t;
1861 typedef atomic<uint_fast16_t> atomic_uint_fast16_t;
1862 typedef atomic<int_fast32_t> atomic_int_fast32_t;
1863 typedef atomic<uint_fast32_t> atomic_uint_fast32_t;
1864 typedef atomic<int_fast64_t> atomic_int_fast64_t;
1865 typedef atomic<uint_fast64_t> atomic_uint_fast64_t;
1867 typedef atomic< int8_t> atomic_int8_t;
1868 typedef atomic<uint8_t> atomic_uint8_t;
1869 typedef atomic< int16_t> atomic_int16_t;
1870 typedef atomic<uint16_t> atomic_uint16_t;
1871 typedef atomic< int32_t> atomic_int32_t;
1872 typedef atomic<uint32_t> atomic_uint32_t;
1873 typedef atomic< int64_t> atomic_int64_t;
1874 typedef atomic<uint64_t> atomic_uint64_t;
1876 typedef atomic<intptr_t> atomic_intptr_t;
1877 typedef atomic<uintptr_t> atomic_uintptr_t;
1878 typedef atomic<size_t> atomic_size_t;
1879 typedef atomic<ptrdiff_t> atomic_ptrdiff_t;
1880 typedef atomic<intmax_t> atomic_intmax_t;
1881 typedef atomic<uintmax_t> atomic_uintmax_t;
1883 #define ATOMIC_FLAG_INIT {false}
1884 #define ATOMIC_VAR_INIT(__v) {__v}
1886 _LIBCPP_END_NAMESPACE_STD
1888 #endif // _LIBCPP_ATOMIC