[libcxx-commits] [libcxx] 46db8d8 - [libc++] Granularize <atomic>
Nikolas Klauser via libcxx-commits
libcxx-commits at lists.llvm.org
Fri Feb 17 03:44:40 PST 2023
Author: Nikolas Klauser
Date: 2023-02-17T12:44:32+01:00
New Revision: 46db8d822ecdf36a714de5e1acf187736a3af5d1
URL: https://github.com/llvm/llvm-project/commit/46db8d822ecdf36a714de5e1acf187736a3af5d1
DIFF: https://github.com/llvm/llvm-project/commit/46db8d822ecdf36a714de5e1acf187736a3af5d1.diff
LOG: [libc++] Granularize <atomic>
Reviewed By: Mordante, #libc
Spies: arichardson, libcxx-commits, krytarowski
Differential Revision: https://reviews.llvm.org/D142972
Added:
libcxx/include/__atomic/aliases.h
libcxx/include/__atomic/atomic.h
libcxx/include/__atomic/atomic_base.h
libcxx/include/__atomic/atomic_flag.h
libcxx/include/__atomic/atomic_init.h
libcxx/include/__atomic/atomic_lock_free.h
libcxx/include/__atomic/atomic_sync.h
libcxx/include/__atomic/check_memory_order.h
libcxx/include/__atomic/contention_t.h
libcxx/include/__atomic/cxx_atomic_impl.h
libcxx/include/__atomic/fence.h
libcxx/include/__atomic/is_always_lock_free.h
libcxx/include/__atomic/kill_dependency.h
libcxx/include/__atomic/memory_order.h
Modified:
libcxx/include/CMakeLists.txt
libcxx/include/atomic
libcxx/include/libcxx.imp
libcxx/include/module.modulemap.in
libcxx/test/libcxx/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_add.verify.cpp
libcxx/test/libcxx/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_add_explicit.verify.cpp
libcxx/test/libcxx/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_sub.verify.cpp
libcxx/test/libcxx/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_sub_explicit.verify.cpp
libcxx/test/libcxx/atomics/bit-int.verify.cpp
libcxx/test/libcxx/private_headers.verify.cpp
libcxx/test/libcxx/transitive_includes/cxx03.csv
libcxx/test/libcxx/transitive_includes/cxx11.csv
libcxx/test/libcxx/transitive_includes/cxx14.csv
libcxx/test/libcxx/transitive_includes/cxx17.csv
libcxx/test/libcxx/transitive_includes/cxx20.csv
libcxx/test/libcxx/transitive_includes/cxx2b.csv
libcxx/test/std/atomics/atomics.types.generic/trivially_copyable.verify.cpp
libcxx/utils/data/ignore_format.txt
Removed:
################################################################################
diff --git a/libcxx/include/CMakeLists.txt b/libcxx/include/CMakeLists.txt
index 25904fe25b54e..c2496bcb2fb0e 100644
--- a/libcxx/include/CMakeLists.txt
+++ b/libcxx/include/CMakeLists.txt
@@ -193,6 +193,20 @@ set(files
__algorithm/unwrap_range.h
__algorithm/upper_bound.h
__assert
+ __atomic/aliases.h
+ __atomic/atomic.h
+ __atomic/atomic_base.h
+ __atomic/atomic_flag.h
+ __atomic/atomic_init.h
+ __atomic/atomic_lock_free.h
+ __atomic/atomic_sync.h
+ __atomic/check_memory_order.h
+ __atomic/contention_t.h
+ __atomic/cxx_atomic_impl.h
+ __atomic/fence.h
+ __atomic/is_always_lock_free.h
+ __atomic/kill_dependency.h
+ __atomic/memory_order.h
__availability
__bit/bit_cast.h
__bit/bit_ceil.h
diff --git a/libcxx/include/__atomic/aliases.h b/libcxx/include/__atomic/aliases.h
new file mode 100644
index 0000000000000..b64282813446e
--- /dev/null
+++ b/libcxx/include/__atomic/aliases.h
@@ -0,0 +1,115 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef _LIBCPP___ATOMIC_ALIASES_H
+#define _LIBCPP___ATOMIC_ALIASES_H
+
+#include <__atomic/atomic.h>
+#include <__atomic/atomic_lock_free.h>
+#include <__atomic/contention_t.h>
+#include <__atomic/is_always_lock_free.h>
+#include <__config>
+#include <__type_traits/conditional.h>
+#include <cstddef>
+#include <cstdint>
+#include <cstdlib>
+
+#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
+# pragma GCC system_header
+#endif
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+typedef atomic<bool> atomic_bool;
+typedef atomic<char> atomic_char;
+typedef atomic<signed char> atomic_schar;
+typedef atomic<unsigned char> atomic_uchar;
+typedef atomic<short> atomic_short;
+typedef atomic<unsigned short> atomic_ushort;
+typedef atomic<int> atomic_int;
+typedef atomic<unsigned int> atomic_uint;
+typedef atomic<long> atomic_long;
+typedef atomic<unsigned long> atomic_ulong;
+typedef atomic<long long> atomic_llong;
+typedef atomic<unsigned long long> atomic_ullong;
+#ifndef _LIBCPP_HAS_NO_CHAR8_T
+typedef atomic<char8_t> atomic_char8_t;
+#endif
+typedef atomic<char16_t> atomic_char16_t;
+typedef atomic<char32_t> atomic_char32_t;
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+typedef atomic<wchar_t> atomic_wchar_t;
+#endif
+
+typedef atomic<int_least8_t> atomic_int_least8_t;
+typedef atomic<uint_least8_t> atomic_uint_least8_t;
+typedef atomic<int_least16_t> atomic_int_least16_t;
+typedef atomic<uint_least16_t> atomic_uint_least16_t;
+typedef atomic<int_least32_t> atomic_int_least32_t;
+typedef atomic<uint_least32_t> atomic_uint_least32_t;
+typedef atomic<int_least64_t> atomic_int_least64_t;
+typedef atomic<uint_least64_t> atomic_uint_least64_t;
+
+typedef atomic<int_fast8_t> atomic_int_fast8_t;
+typedef atomic<uint_fast8_t> atomic_uint_fast8_t;
+typedef atomic<int_fast16_t> atomic_int_fast16_t;
+typedef atomic<uint_fast16_t> atomic_uint_fast16_t;
+typedef atomic<int_fast32_t> atomic_int_fast32_t;
+typedef atomic<uint_fast32_t> atomic_uint_fast32_t;
+typedef atomic<int_fast64_t> atomic_int_fast64_t;
+typedef atomic<uint_fast64_t> atomic_uint_fast64_t;
+
+typedef atomic< int8_t> atomic_int8_t;
+typedef atomic<uint8_t> atomic_uint8_t;
+typedef atomic< int16_t> atomic_int16_t;
+typedef atomic<uint16_t> atomic_uint16_t;
+typedef atomic< int32_t> atomic_int32_t;
+typedef atomic<uint32_t> atomic_uint32_t;
+typedef atomic< int64_t> atomic_int64_t;
+typedef atomic<uint64_t> atomic_uint64_t;
+
+typedef atomic<intptr_t> atomic_intptr_t;
+typedef atomic<uintptr_t> atomic_uintptr_t;
+typedef atomic<size_t> atomic_size_t;
+typedef atomic<ptr
diff _t> atomic_ptr
diff _t;
+typedef atomic<intmax_t> atomic_intmax_t;
+typedef atomic<uintmax_t> atomic_uintmax_t;
+
+// atomic_*_lock_free : prefer the contention type most highly, then the largest lock-free type
+
+#ifdef __cpp_lib_atomic_is_always_lock_free
+# define _LIBCPP_CONTENTION_LOCK_FREE ::std::__libcpp_is_always_lock_free<__cxx_contention_t>::__value
+#else
+# define _LIBCPP_CONTENTION_LOCK_FREE false
+#endif
+
+#if ATOMIC_LLONG_LOCK_FREE == 2
+typedef __conditional_t<_LIBCPP_CONTENTION_LOCK_FREE, __cxx_contention_t, long long> __libcpp_signed_lock_free;
+typedef __conditional_t<_LIBCPP_CONTENTION_LOCK_FREE, __cxx_contention_t, unsigned long long> __libcpp_unsigned_lock_free;
+#elif ATOMIC_INT_LOCK_FREE == 2
+typedef __conditional_t<_LIBCPP_CONTENTION_LOCK_FREE, __cxx_contention_t, int> __libcpp_signed_lock_free;
+typedef __conditional_t<_LIBCPP_CONTENTION_LOCK_FREE, __cxx_contention_t, unsigned int> __libcpp_unsigned_lock_free;
+#elif ATOMIC_SHORT_LOCK_FREE == 2
+typedef __conditional_t<_LIBCPP_CONTENTION_LOCK_FREE, __cxx_contention_t, short> __libcpp_signed_lock_free;
+typedef __conditional_t<_LIBCPP_CONTENTION_LOCK_FREE, __cxx_contention_t, unsigned short> __libcpp_unsigned_lock_free;
+#elif ATOMIC_CHAR_LOCK_FREE == 2
+typedef __conditional_t<_LIBCPP_CONTENTION_LOCK_FREE, __cxx_contention_t, char> __libcpp_signed_lock_free;
+typedef __conditional_t<_LIBCPP_CONTENTION_LOCK_FREE, __cxx_contention_t, unsigned char> __libcpp_unsigned_lock_free;
+#else
+ // No signed/unsigned lock-free types
+#define _LIBCPP_NO_LOCK_FREE_TYPES
+#endif
+
+#if !defined(_LIBCPP_NO_LOCK_FREE_TYPES)
+typedef atomic<__libcpp_signed_lock_free> atomic_signed_lock_free;
+typedef atomic<__libcpp_unsigned_lock_free> atomic_unsigned_lock_free;
+#endif
+
+_LIBCPP_END_NAMESPACE_STD
+
+#endif // _LIBCPP___ATOMIC_ALIASES_H
diff --git a/libcxx/include/__atomic/atomic.h b/libcxx/include/__atomic/atomic.h
new file mode 100644
index 0000000000000..fdefd9fe8121a
--- /dev/null
+++ b/libcxx/include/__atomic/atomic.h
@@ -0,0 +1,663 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef _LIBCPP___ATOMIC_ATOMIC_H
+#define _LIBCPP___ATOMIC_ATOMIC_H
+
+#include <__atomic/atomic_base.h>
+#include <__atomic/check_memory_order.h>
+#include <__atomic/cxx_atomic_impl.h>
+#include <__atomic/memory_order.h>
+#include <__config>
+#include <__type_traits/is_function.h>
+#include <__type_traits/is_same.h>
+#include <__type_traits/remove_pointer.h>
+#include <cstddef>
+
+#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
+# pragma GCC system_header
+#endif
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+template <class _Tp>
+struct atomic
+ : public __atomic_base<_Tp>
+{
+ typedef __atomic_base<_Tp> __base;
+ typedef _Tp value_type;
+ typedef value_type
diff erence_type;
+
+#if _LIBCPP_STD_VER >= 20
+ _LIBCPP_INLINE_VISIBILITY
+ atomic() = default;
+#else
+ _LIBCPP_INLINE_VISIBILITY
+ atomic() _NOEXCEPT = default;
+#endif
+
+ _LIBCPP_INLINE_VISIBILITY
+ _LIBCPP_CONSTEXPR atomic(_Tp __d) _NOEXCEPT : __base(__d) {}
+
+ _LIBCPP_INLINE_VISIBILITY
+ _Tp operator=(_Tp __d) volatile _NOEXCEPT
+ {__base::store(__d); return __d;}
+ _LIBCPP_INLINE_VISIBILITY
+ _Tp operator=(_Tp __d) _NOEXCEPT
+ {__base::store(__d); return __d;}
+
+ atomic& operator=(const atomic&) = delete;
+ atomic& operator=(const atomic&) volatile = delete;
+};
+
+// atomic<T*>
+
+template <class _Tp>
+struct atomic<_Tp*>
+ : public __atomic_base<_Tp*>
+{
+ typedef __atomic_base<_Tp*> __base;
+ typedef _Tp* value_type;
+ typedef ptr
diff _t
diff erence_type;
+
+ _LIBCPP_INLINE_VISIBILITY
+ atomic() _NOEXCEPT = default;
+
+ _LIBCPP_INLINE_VISIBILITY
+ _LIBCPP_CONSTEXPR atomic(_Tp* __d) _NOEXCEPT : __base(__d) {}
+
+ _LIBCPP_INLINE_VISIBILITY
+ _Tp* operator=(_Tp* __d) volatile _NOEXCEPT
+ {__base::store(__d); return __d;}
+ _LIBCPP_INLINE_VISIBILITY
+ _Tp* operator=(_Tp* __d) _NOEXCEPT
+ {__base::store(__d); return __d;}
+
+ _LIBCPP_INLINE_VISIBILITY
+ _Tp* fetch_add(ptr
diff _t __op, memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT {
+ // __atomic_fetch_add accepts function pointers, guard against them.
+ static_assert(!is_function<__remove_pointer_t<_Tp> >::value, "Pointer to function isn't allowed");
+ return std::__cxx_atomic_fetch_add(&this->__a_, __op, __m);
+ }
+
+ _LIBCPP_INLINE_VISIBILITY
+ _Tp* fetch_add(ptr
diff _t __op, memory_order __m = memory_order_seq_cst) _NOEXCEPT {
+ // __atomic_fetch_add accepts function pointers, guard against them.
+ static_assert(!is_function<__remove_pointer_t<_Tp> >::value, "Pointer to function isn't allowed");
+ return std::__cxx_atomic_fetch_add(&this->__a_, __op, __m);
+ }
+
+ _LIBCPP_INLINE_VISIBILITY
+ _Tp* fetch_sub(ptr
diff _t __op, memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT {
+ // __atomic_fetch_add accepts function pointers, guard against them.
+ static_assert(!is_function<__remove_pointer_t<_Tp> >::value, "Pointer to function isn't allowed");
+ return std::__cxx_atomic_fetch_sub(&this->__a_, __op, __m);
+ }
+
+ _LIBCPP_INLINE_VISIBILITY
+ _Tp* fetch_sub(ptr
diff _t __op, memory_order __m = memory_order_seq_cst) _NOEXCEPT {
+ // __atomic_fetch_add accepts function pointers, guard against them.
+ static_assert(!is_function<__remove_pointer_t<_Tp> >::value, "Pointer to function isn't allowed");
+ return std::__cxx_atomic_fetch_sub(&this->__a_, __op, __m);
+ }
+
+ _LIBCPP_INLINE_VISIBILITY
+ _Tp* operator++(int) volatile _NOEXCEPT {return fetch_add(1);}
+ _LIBCPP_INLINE_VISIBILITY
+ _Tp* operator++(int) _NOEXCEPT {return fetch_add(1);}
+ _LIBCPP_INLINE_VISIBILITY
+ _Tp* operator--(int) volatile _NOEXCEPT {return fetch_sub(1);}
+ _LIBCPP_INLINE_VISIBILITY
+ _Tp* operator--(int) _NOEXCEPT {return fetch_sub(1);}
+ _LIBCPP_INLINE_VISIBILITY
+ _Tp* operator++() volatile _NOEXCEPT {return fetch_add(1) + 1;}
+ _LIBCPP_INLINE_VISIBILITY
+ _Tp* operator++() _NOEXCEPT {return fetch_add(1) + 1;}
+ _LIBCPP_INLINE_VISIBILITY
+ _Tp* operator--() volatile _NOEXCEPT {return fetch_sub(1) - 1;}
+ _LIBCPP_INLINE_VISIBILITY
+ _Tp* operator--() _NOEXCEPT {return fetch_sub(1) - 1;}
+ _LIBCPP_INLINE_VISIBILITY
+ _Tp* operator+=(ptr
diff _t __op) volatile _NOEXCEPT {return fetch_add(__op) + __op;}
+ _LIBCPP_INLINE_VISIBILITY
+ _Tp* operator+=(ptr
diff _t __op) _NOEXCEPT {return fetch_add(__op) + __op;}
+ _LIBCPP_INLINE_VISIBILITY
+ _Tp* operator-=(ptr
diff _t __op) volatile _NOEXCEPT {return fetch_sub(__op) - __op;}
+ _LIBCPP_INLINE_VISIBILITY
+ _Tp* operator-=(ptr
diff _t __op) _NOEXCEPT {return fetch_sub(__op) - __op;}
+
+ atomic& operator=(const atomic&) = delete;
+ atomic& operator=(const atomic&) volatile = delete;
+};
+
+// atomic_is_lock_free
+
+template <class _Tp>
+_LIBCPP_INLINE_VISIBILITY
+bool
+atomic_is_lock_free(const volatile atomic<_Tp>* __o) _NOEXCEPT
+{
+ return __o->is_lock_free();
+}
+
+template <class _Tp>
+_LIBCPP_INLINE_VISIBILITY
+bool
+atomic_is_lock_free(const atomic<_Tp>* __o) _NOEXCEPT
+{
+ return __o->is_lock_free();
+}
+
+// atomic_init
+
+template <class _Tp>
+_LIBCPP_DEPRECATED_IN_CXX20 _LIBCPP_INLINE_VISIBILITY
+void
+atomic_init(volatile atomic<_Tp>* __o, typename atomic<_Tp>::value_type __d) _NOEXCEPT
+{
+ std::__cxx_atomic_init(&__o->__a_, __d);
+}
+
+template <class _Tp>
+_LIBCPP_DEPRECATED_IN_CXX20 _LIBCPP_INLINE_VISIBILITY
+void
+atomic_init(atomic<_Tp>* __o, typename atomic<_Tp>::value_type __d) _NOEXCEPT
+{
+ std::__cxx_atomic_init(&__o->__a_, __d);
+}
+
+// atomic_store
+
+template <class _Tp>
+_LIBCPP_INLINE_VISIBILITY
+void
+atomic_store(volatile atomic<_Tp>* __o, typename atomic<_Tp>::value_type __d) _NOEXCEPT
+{
+ __o->store(__d);
+}
+
+template <class _Tp>
+_LIBCPP_INLINE_VISIBILITY
+void
+atomic_store(atomic<_Tp>* __o, typename atomic<_Tp>::value_type __d) _NOEXCEPT
+{
+ __o->store(__d);
+}
+
+// atomic_store_explicit
+
+template <class _Tp>
+_LIBCPP_INLINE_VISIBILITY
+void
+atomic_store_explicit(volatile atomic<_Tp>* __o, typename atomic<_Tp>::value_type __d, memory_order __m) _NOEXCEPT
+ _LIBCPP_CHECK_STORE_MEMORY_ORDER(__m)
+{
+ __o->store(__d, __m);
+}
+
+template <class _Tp>
+_LIBCPP_INLINE_VISIBILITY
+void
+atomic_store_explicit(atomic<_Tp>* __o, typename atomic<_Tp>::value_type __d, memory_order __m) _NOEXCEPT
+ _LIBCPP_CHECK_STORE_MEMORY_ORDER(__m)
+{
+ __o->store(__d, __m);
+}
+
+// atomic_load
+
+template <class _Tp>
+_LIBCPP_INLINE_VISIBILITY
+_Tp
+atomic_load(const volatile atomic<_Tp>* __o) _NOEXCEPT
+{
+ return __o->load();
+}
+
+template <class _Tp>
+_LIBCPP_INLINE_VISIBILITY
+_Tp
+atomic_load(const atomic<_Tp>* __o) _NOEXCEPT
+{
+ return __o->load();
+}
+
+// atomic_load_explicit
+
+template <class _Tp>
+_LIBCPP_INLINE_VISIBILITY
+_Tp
+atomic_load_explicit(const volatile atomic<_Tp>* __o, memory_order __m) _NOEXCEPT
+ _LIBCPP_CHECK_LOAD_MEMORY_ORDER(__m)
+{
+ return __o->load(__m);
+}
+
+template <class _Tp>
+_LIBCPP_INLINE_VISIBILITY
+_Tp
+atomic_load_explicit(const atomic<_Tp>* __o, memory_order __m) _NOEXCEPT
+ _LIBCPP_CHECK_LOAD_MEMORY_ORDER(__m)
+{
+ return __o->load(__m);
+}
+
+// atomic_exchange
+
+template <class _Tp>
+_LIBCPP_INLINE_VISIBILITY
+_Tp
+atomic_exchange(volatile atomic<_Tp>* __o, typename atomic<_Tp>::value_type __d) _NOEXCEPT
+{
+ return __o->exchange(__d);
+}
+
+template <class _Tp>
+_LIBCPP_INLINE_VISIBILITY
+_Tp
+atomic_exchange(atomic<_Tp>* __o, typename atomic<_Tp>::value_type __d) _NOEXCEPT
+{
+ return __o->exchange(__d);
+}
+
+// atomic_exchange_explicit
+
+template <class _Tp>
+_LIBCPP_INLINE_VISIBILITY
+_Tp
+atomic_exchange_explicit(volatile atomic<_Tp>* __o, typename atomic<_Tp>::value_type __d, memory_order __m) _NOEXCEPT
+{
+ return __o->exchange(__d, __m);
+}
+
+template <class _Tp>
+_LIBCPP_INLINE_VISIBILITY
+_Tp
+atomic_exchange_explicit(atomic<_Tp>* __o, typename atomic<_Tp>::value_type __d, memory_order __m) _NOEXCEPT
+{
+ return __o->exchange(__d, __m);
+}
+
+// atomic_compare_exchange_weak
+
+template <class _Tp>
+_LIBCPP_INLINE_VISIBILITY
+bool
+atomic_compare_exchange_weak(volatile atomic<_Tp>* __o, typename atomic<_Tp>::value_type* __e, typename atomic<_Tp>::value_type __d) _NOEXCEPT
+{
+ return __o->compare_exchange_weak(*__e, __d);
+}
+
+template <class _Tp>
+_LIBCPP_INLINE_VISIBILITY
+bool
+atomic_compare_exchange_weak(atomic<_Tp>* __o, typename atomic<_Tp>::value_type* __e, typename atomic<_Tp>::value_type __d) _NOEXCEPT
+{
+ return __o->compare_exchange_weak(*__e, __d);
+}
+
+// atomic_compare_exchange_strong
+
+template <class _Tp>
+_LIBCPP_INLINE_VISIBILITY
+bool
+atomic_compare_exchange_strong(volatile atomic<_Tp>* __o, typename atomic<_Tp>::value_type* __e, typename atomic<_Tp>::value_type __d) _NOEXCEPT
+{
+ return __o->compare_exchange_strong(*__e, __d);
+}
+
+template <class _Tp>
+_LIBCPP_INLINE_VISIBILITY
+bool
+atomic_compare_exchange_strong(atomic<_Tp>* __o, typename atomic<_Tp>::value_type* __e, typename atomic<_Tp>::value_type __d) _NOEXCEPT
+{
+ return __o->compare_exchange_strong(*__e, __d);
+}
+
+// atomic_compare_exchange_weak_explicit
+
+template <class _Tp>
+_LIBCPP_INLINE_VISIBILITY
+bool
+atomic_compare_exchange_weak_explicit(volatile atomic<_Tp>* __o, typename atomic<_Tp>::value_type* __e,
+ typename atomic<_Tp>::value_type __d,
+ memory_order __s, memory_order __f) _NOEXCEPT
+ _LIBCPP_CHECK_EXCHANGE_MEMORY_ORDER(__s, __f)
+{
+ return __o->compare_exchange_weak(*__e, __d, __s, __f);
+}
+
+template <class _Tp>
+_LIBCPP_INLINE_VISIBILITY
+bool
+atomic_compare_exchange_weak_explicit(atomic<_Tp>* __o, typename atomic<_Tp>::value_type* __e, typename atomic<_Tp>::value_type __d,
+ memory_order __s, memory_order __f) _NOEXCEPT
+ _LIBCPP_CHECK_EXCHANGE_MEMORY_ORDER(__s, __f)
+{
+ return __o->compare_exchange_weak(*__e, __d, __s, __f);
+}
+
+// atomic_compare_exchange_strong_explicit
+
+template <class _Tp>
+_LIBCPP_INLINE_VISIBILITY
+bool
+atomic_compare_exchange_strong_explicit(volatile atomic<_Tp>* __o,
+ typename atomic<_Tp>::value_type* __e, typename atomic<_Tp>::value_type __d,
+ memory_order __s, memory_order __f) _NOEXCEPT
+ _LIBCPP_CHECK_EXCHANGE_MEMORY_ORDER(__s, __f)
+{
+ return __o->compare_exchange_strong(*__e, __d, __s, __f);
+}
+
+template <class _Tp>
+_LIBCPP_INLINE_VISIBILITY
+bool
+atomic_compare_exchange_strong_explicit(atomic<_Tp>* __o, typename atomic<_Tp>::value_type* __e,
+ typename atomic<_Tp>::value_type __d,
+ memory_order __s, memory_order __f) _NOEXCEPT
+ _LIBCPP_CHECK_EXCHANGE_MEMORY_ORDER(__s, __f)
+{
+ return __o->compare_exchange_strong(*__e, __d, __s, __f);
+}
+
+// atomic_wait
+
+template <class _Tp>
+_LIBCPP_AVAILABILITY_SYNC _LIBCPP_INLINE_VISIBILITY
+void atomic_wait(const volatile atomic<_Tp>* __o,
+ typename atomic<_Tp>::value_type __v) _NOEXCEPT
+{
+ return __o->wait(__v);
+}
+
+template <class _Tp>
+_LIBCPP_AVAILABILITY_SYNC _LIBCPP_INLINE_VISIBILITY
+void atomic_wait(const atomic<_Tp>* __o,
+ typename atomic<_Tp>::value_type __v) _NOEXCEPT
+{
+ return __o->wait(__v);
+}
+
+// atomic_wait_explicit
+
+template <class _Tp>
+_LIBCPP_AVAILABILITY_SYNC _LIBCPP_INLINE_VISIBILITY
+void atomic_wait_explicit(const volatile atomic<_Tp>* __o,
+ typename atomic<_Tp>::value_type __v,
+ memory_order __m) _NOEXCEPT
+ _LIBCPP_CHECK_LOAD_MEMORY_ORDER(__m)
+{
+ return __o->wait(__v, __m);
+}
+
+template <class _Tp>
+_LIBCPP_AVAILABILITY_SYNC _LIBCPP_INLINE_VISIBILITY
+void atomic_wait_explicit(const atomic<_Tp>* __o,
+ typename atomic<_Tp>::value_type __v,
+ memory_order __m) _NOEXCEPT
+ _LIBCPP_CHECK_LOAD_MEMORY_ORDER(__m)
+{
+ return __o->wait(__v, __m);
+}
+
+// atomic_notify_one
+
+template <class _Tp>
+_LIBCPP_AVAILABILITY_SYNC _LIBCPP_INLINE_VISIBILITY
+void atomic_notify_one(volatile atomic<_Tp>* __o) _NOEXCEPT
+{
+ __o->notify_one();
+}
+template <class _Tp>
+_LIBCPP_AVAILABILITY_SYNC _LIBCPP_INLINE_VISIBILITY
+void atomic_notify_one(atomic<_Tp>* __o) _NOEXCEPT
+{
+ __o->notify_one();
+}
+
+// atomic_notify_all
+
+template <class _Tp>
+_LIBCPP_AVAILABILITY_SYNC _LIBCPP_INLINE_VISIBILITY
+void atomic_notify_all(volatile atomic<_Tp>* __o) _NOEXCEPT
+{
+ __o->notify_all();
+}
+template <class _Tp>
+_LIBCPP_AVAILABILITY_SYNC _LIBCPP_INLINE_VISIBILITY
+void atomic_notify_all(atomic<_Tp>* __o) _NOEXCEPT
+{
+ __o->notify_all();
+}
+
+// atomic_fetch_add
+
+template <class _Tp>
+_LIBCPP_INLINE_VISIBILITY
+_Tp
+atomic_fetch_add(volatile atomic<_Tp>* __o, typename atomic<_Tp>::
diff erence_type __op) _NOEXCEPT
+{
+ return __o->fetch_add(__op);
+}
+
+template <class _Tp>
+_LIBCPP_INLINE_VISIBILITY
+_Tp
+atomic_fetch_add(atomic<_Tp>* __o, typename atomic<_Tp>::
diff erence_type __op) _NOEXCEPT
+{
+ return __o->fetch_add(__op);
+}
+
+// atomic_fetch_add_explicit
+
+template <class _Tp>
+_LIBCPP_INLINE_VISIBILITY
+_Tp atomic_fetch_add_explicit(volatile atomic<_Tp>* __o, typename atomic<_Tp>::
diff erence_type __op, memory_order __m) _NOEXCEPT
+{
+ return __o->fetch_add(__op, __m);
+}
+
+template <class _Tp>
+_LIBCPP_INLINE_VISIBILITY
+_Tp atomic_fetch_add_explicit(atomic<_Tp>* __o, typename atomic<_Tp>::
diff erence_type __op, memory_order __m) _NOEXCEPT
+{
+ return __o->fetch_add(__op, __m);
+}
+
+// atomic_fetch_sub
+
+template <class _Tp>
+_LIBCPP_INLINE_VISIBILITY
+_Tp atomic_fetch_sub(volatile atomic<_Tp>* __o, typename atomic<_Tp>::
diff erence_type __op) _NOEXCEPT
+{
+ return __o->fetch_sub(__op);
+}
+
+template <class _Tp>
+_LIBCPP_INLINE_VISIBILITY
+_Tp atomic_fetch_sub(atomic<_Tp>* __o, typename atomic<_Tp>::
diff erence_type __op) _NOEXCEPT
+{
+ return __o->fetch_sub(__op);
+}
+
+// atomic_fetch_sub_explicit
+
+template <class _Tp>
+_LIBCPP_INLINE_VISIBILITY
+_Tp atomic_fetch_sub_explicit(volatile atomic<_Tp>* __o, typename atomic<_Tp>::
diff erence_type __op, memory_order __m) _NOEXCEPT
+{
+ return __o->fetch_sub(__op, __m);
+}
+
+template <class _Tp>
+_LIBCPP_INLINE_VISIBILITY
+_Tp atomic_fetch_sub_explicit(atomic<_Tp>* __o, typename atomic<_Tp>::
diff erence_type __op, memory_order __m) _NOEXCEPT
+{
+ return __o->fetch_sub(__op, __m);
+}
+
+// atomic_fetch_and
+
+template <class _Tp>
+_LIBCPP_INLINE_VISIBILITY
+typename enable_if
+<
+ is_integral<_Tp>::value && !is_same<_Tp, bool>::value,
+ _Tp
+>::type
+atomic_fetch_and(volatile atomic<_Tp>* __o, typename atomic<_Tp>::value_type __op) _NOEXCEPT
+{
+ return __o->fetch_and(__op);
+}
+
+template <class _Tp>
+_LIBCPP_INLINE_VISIBILITY
+typename enable_if
+<
+ is_integral<_Tp>::value && !is_same<_Tp, bool>::value,
+ _Tp
+>::type
+atomic_fetch_and(atomic<_Tp>* __o, typename atomic<_Tp>::value_type __op) _NOEXCEPT
+{
+ return __o->fetch_and(__op);
+}
+
+// atomic_fetch_and_explicit
+
+template <class _Tp>
+_LIBCPP_INLINE_VISIBILITY
+typename enable_if
+<
+ is_integral<_Tp>::value && !is_same<_Tp, bool>::value,
+ _Tp
+>::type
+atomic_fetch_and_explicit(volatile atomic<_Tp>* __o, typename atomic<_Tp>::value_type __op, memory_order __m) _NOEXCEPT
+{
+ return __o->fetch_and(__op, __m);
+}
+
+template <class _Tp>
+_LIBCPP_INLINE_VISIBILITY
+typename enable_if
+<
+ is_integral<_Tp>::value && !is_same<_Tp, bool>::value,
+ _Tp
+>::type
+atomic_fetch_and_explicit(atomic<_Tp>* __o, typename atomic<_Tp>::value_type __op, memory_order __m) _NOEXCEPT
+{
+ return __o->fetch_and(__op, __m);
+}
+
+// atomic_fetch_or
+
+template <class _Tp>
+_LIBCPP_INLINE_VISIBILITY
+typename enable_if
+<
+ is_integral<_Tp>::value && !is_same<_Tp, bool>::value,
+ _Tp
+>::type
+atomic_fetch_or(volatile atomic<_Tp>* __o, typename atomic<_Tp>::value_type __op) _NOEXCEPT
+{
+ return __o->fetch_or(__op);
+}
+
+template <class _Tp>
+_LIBCPP_INLINE_VISIBILITY
+typename enable_if
+<
+ is_integral<_Tp>::value && !is_same<_Tp, bool>::value,
+ _Tp
+>::type
+atomic_fetch_or(atomic<_Tp>* __o, typename atomic<_Tp>::value_type __op) _NOEXCEPT
+{
+ return __o->fetch_or(__op);
+}
+
+// atomic_fetch_or_explicit
+
+template <class _Tp>
+_LIBCPP_INLINE_VISIBILITY
+typename enable_if
+<
+ is_integral<_Tp>::value && !is_same<_Tp, bool>::value,
+ _Tp
+>::type
+atomic_fetch_or_explicit(volatile atomic<_Tp>* __o, typename atomic<_Tp>::value_type __op, memory_order __m) _NOEXCEPT
+{
+ return __o->fetch_or(__op, __m);
+}
+
+template <class _Tp>
+_LIBCPP_INLINE_VISIBILITY
+typename enable_if
+<
+ is_integral<_Tp>::value && !is_same<_Tp, bool>::value,
+ _Tp
+>::type
+atomic_fetch_or_explicit(atomic<_Tp>* __o, typename atomic<_Tp>::value_type __op, memory_order __m) _NOEXCEPT
+{
+ return __o->fetch_or(__op, __m);
+}
+
+// atomic_fetch_xor
+
+template <class _Tp>
+_LIBCPP_INLINE_VISIBILITY
+typename enable_if
+<
+ is_integral<_Tp>::value && !is_same<_Tp, bool>::value,
+ _Tp
+>::type
+atomic_fetch_xor(volatile atomic<_Tp>* __o, typename atomic<_Tp>::value_type __op) _NOEXCEPT
+{
+ return __o->fetch_xor(__op);
+}
+
+template <class _Tp>
+_LIBCPP_INLINE_VISIBILITY
+typename enable_if
+<
+ is_integral<_Tp>::value && !is_same<_Tp, bool>::value,
+ _Tp
+>::type
+atomic_fetch_xor(atomic<_Tp>* __o, typename atomic<_Tp>::value_type __op) _NOEXCEPT
+{
+ return __o->fetch_xor(__op);
+}
+
+// atomic_fetch_xor_explicit
+
+template <class _Tp>
+_LIBCPP_INLINE_VISIBILITY
+typename enable_if
+<
+ is_integral<_Tp>::value && !is_same<_Tp, bool>::value,
+ _Tp
+>::type
+atomic_fetch_xor_explicit(volatile atomic<_Tp>* __o, typename atomic<_Tp>::value_type __op, memory_order __m) _NOEXCEPT
+{
+ return __o->fetch_xor(__op, __m);
+}
+
+template <class _Tp>
+_LIBCPP_INLINE_VISIBILITY
+typename enable_if
+<
+ is_integral<_Tp>::value && !is_same<_Tp, bool>::value,
+ _Tp
+>::type
+atomic_fetch_xor_explicit(atomic<_Tp>* __o, typename atomic<_Tp>::value_type __op, memory_order __m) _NOEXCEPT
+{
+ return __o->fetch_xor(__op, __m);
+}
+
+_LIBCPP_END_NAMESPACE_STD
+
+#endif // _LIBCPP___ATOMIC_ATOMIC_H
diff --git a/libcxx/include/__atomic/atomic_base.h b/libcxx/include/__atomic/atomic_base.h
new file mode 100644
index 0000000000000..974a7f7637cf6
--- /dev/null
+++ b/libcxx/include/__atomic/atomic_base.h
@@ -0,0 +1,225 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef _LIBCPP___ATOMIC_ATOMIC_BASE_H
+#define _LIBCPP___ATOMIC_ATOMIC_BASE_H
+
+#include <__atomic/atomic_sync.h>
+#include <__atomic/check_memory_order.h>
+#include <__atomic/cxx_atomic_impl.h>
+#include <__atomic/is_always_lock_free.h>
+#include <__atomic/memory_order.h>
+#include <__availability>
+#include <__config>
+#include <__type_traits/is_integral.h>
+#include <__type_traits/is_nothrow_default_constructible.h>
+#include <__type_traits/is_same.h>
+#include <version>
+
+#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
+# pragma GCC system_header
+#endif
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+template <class _Tp, bool = is_integral<_Tp>::value && !is_same<_Tp, bool>::value>
+struct __atomic_base // false
+{
+ mutable __cxx_atomic_impl<_Tp> __a_;
+
+#if defined(__cpp_lib_atomic_is_always_lock_free)
+ static _LIBCPP_CONSTEXPR bool is_always_lock_free = __libcpp_is_always_lock_free<__cxx_atomic_impl<_Tp> >::__value;
+#endif
+
+ _LIBCPP_INLINE_VISIBILITY
+ bool is_lock_free() const volatile _NOEXCEPT
+ {return __cxx_atomic_is_lock_free(sizeof(_Tp));}
+ _LIBCPP_INLINE_VISIBILITY
+ bool is_lock_free() const _NOEXCEPT
+ {return static_cast<__atomic_base const volatile*>(this)->is_lock_free();}
+ _LIBCPP_INLINE_VISIBILITY
+ void store(_Tp __d, memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT
+ _LIBCPP_CHECK_STORE_MEMORY_ORDER(__m)
+ {std::__cxx_atomic_store(&__a_, __d, __m);}
+ _LIBCPP_INLINE_VISIBILITY
+ void store(_Tp __d, memory_order __m = memory_order_seq_cst) _NOEXCEPT
+ _LIBCPP_CHECK_STORE_MEMORY_ORDER(__m)
+ {std::__cxx_atomic_store(&__a_, __d, __m);}
+ _LIBCPP_INLINE_VISIBILITY
+ _Tp load(memory_order __m = memory_order_seq_cst) const volatile _NOEXCEPT
+ _LIBCPP_CHECK_LOAD_MEMORY_ORDER(__m)
+ {return std::__cxx_atomic_load(&__a_, __m);}
+ _LIBCPP_INLINE_VISIBILITY
+ _Tp load(memory_order __m = memory_order_seq_cst) const _NOEXCEPT
+ _LIBCPP_CHECK_LOAD_MEMORY_ORDER(__m)
+ {return std::__cxx_atomic_load(&__a_, __m);}
+ _LIBCPP_INLINE_VISIBILITY
+ operator _Tp() const volatile _NOEXCEPT {return load();}
+ _LIBCPP_INLINE_VISIBILITY
+ operator _Tp() const _NOEXCEPT {return load();}
+ _LIBCPP_INLINE_VISIBILITY
+ _Tp exchange(_Tp __d, memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT
+ {return std::__cxx_atomic_exchange(&__a_, __d, __m);}
+ _LIBCPP_INLINE_VISIBILITY
+ _Tp exchange(_Tp __d, memory_order __m = memory_order_seq_cst) _NOEXCEPT
+ {return std::__cxx_atomic_exchange(&__a_, __d, __m);}
+ _LIBCPP_INLINE_VISIBILITY
+ bool compare_exchange_weak(_Tp& __e, _Tp __d,
+ memory_order __s, memory_order __f) volatile _NOEXCEPT
+ _LIBCPP_CHECK_EXCHANGE_MEMORY_ORDER(__s, __f)
+ {return std::__cxx_atomic_compare_exchange_weak(&__a_, &__e, __d, __s, __f);}
+ _LIBCPP_INLINE_VISIBILITY
+ bool compare_exchange_weak(_Tp& __e, _Tp __d,
+ memory_order __s, memory_order __f) _NOEXCEPT
+ _LIBCPP_CHECK_EXCHANGE_MEMORY_ORDER(__s, __f)
+ {return std::__cxx_atomic_compare_exchange_weak(&__a_, &__e, __d, __s, __f);}
+ _LIBCPP_INLINE_VISIBILITY
+ bool compare_exchange_strong(_Tp& __e, _Tp __d,
+ memory_order __s, memory_order __f) volatile _NOEXCEPT
+ _LIBCPP_CHECK_EXCHANGE_MEMORY_ORDER(__s, __f)
+ {return std::__cxx_atomic_compare_exchange_strong(&__a_, &__e, __d, __s, __f);}
+ _LIBCPP_INLINE_VISIBILITY
+ bool compare_exchange_strong(_Tp& __e, _Tp __d,
+ memory_order __s, memory_order __f) _NOEXCEPT
+ _LIBCPP_CHECK_EXCHANGE_MEMORY_ORDER(__s, __f)
+ {return std::__cxx_atomic_compare_exchange_strong(&__a_, &__e, __d, __s, __f);}
+ _LIBCPP_INLINE_VISIBILITY
+ bool compare_exchange_weak(_Tp& __e, _Tp __d,
+ memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT
+ {return std::__cxx_atomic_compare_exchange_weak(&__a_, &__e, __d, __m, __m);}
+ _LIBCPP_INLINE_VISIBILITY
+ bool compare_exchange_weak(_Tp& __e, _Tp __d,
+ memory_order __m = memory_order_seq_cst) _NOEXCEPT
+ {return std::__cxx_atomic_compare_exchange_weak(&__a_, &__e, __d, __m, __m);}
+ _LIBCPP_INLINE_VISIBILITY
+ bool compare_exchange_strong(_Tp& __e, _Tp __d,
+ memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT
+ {return std::__cxx_atomic_compare_exchange_strong(&__a_, &__e, __d, __m, __m);}
+ _LIBCPP_INLINE_VISIBILITY
+ bool compare_exchange_strong(_Tp& __e, _Tp __d,
+ memory_order __m = memory_order_seq_cst) _NOEXCEPT
+ {return std::__cxx_atomic_compare_exchange_strong(&__a_, &__e, __d, __m, __m);}
+
+ _LIBCPP_AVAILABILITY_SYNC _LIBCPP_INLINE_VISIBILITY void wait(_Tp __v, memory_order __m = memory_order_seq_cst) const volatile _NOEXCEPT
+ {std::__cxx_atomic_wait(&__a_, __v, __m);}
+ _LIBCPP_AVAILABILITY_SYNC _LIBCPP_INLINE_VISIBILITY void wait(_Tp __v, memory_order __m = memory_order_seq_cst) const _NOEXCEPT
+ {std::__cxx_atomic_wait(&__a_, __v, __m);}
+ _LIBCPP_AVAILABILITY_SYNC _LIBCPP_INLINE_VISIBILITY void notify_one() volatile _NOEXCEPT
+ {std::__cxx_atomic_notify_one(&__a_);}
+ _LIBCPP_AVAILABILITY_SYNC _LIBCPP_INLINE_VISIBILITY void notify_one() _NOEXCEPT
+ {std::__cxx_atomic_notify_one(&__a_);}
+ _LIBCPP_AVAILABILITY_SYNC _LIBCPP_INLINE_VISIBILITY void notify_all() volatile _NOEXCEPT
+ {std::__cxx_atomic_notify_all(&__a_);}
+ _LIBCPP_AVAILABILITY_SYNC _LIBCPP_INLINE_VISIBILITY void notify_all() _NOEXCEPT
+ {std::__cxx_atomic_notify_all(&__a_);}
+
+#if _LIBCPP_STD_VER >= 20
+ _LIBCPP_INLINE_VISIBILITY constexpr
+ __atomic_base() noexcept(is_nothrow_default_constructible_v<_Tp>) : __a_(_Tp()) {}
+#else
+ _LIBCPP_INLINE_VISIBILITY
+ __atomic_base() _NOEXCEPT = default;
+#endif
+
+ _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
+ __atomic_base(_Tp __d) _NOEXCEPT : __a_(__d) {}
+
+ __atomic_base(const __atomic_base&) = delete;
+};
+
+#if defined(__cpp_lib_atomic_is_always_lock_free)
+template <class _Tp, bool __b>
+_LIBCPP_CONSTEXPR bool __atomic_base<_Tp, __b>::is_always_lock_free;
+#endif
+
+// atomic<Integral>
+
+template <class _Tp>
+struct __atomic_base<_Tp, true>
+ : public __atomic_base<_Tp, false>
+{
+ typedef __atomic_base<_Tp, false> __base;
+
+ _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20
+ __atomic_base() _NOEXCEPT = default;
+
+ _LIBCPP_INLINE_VISIBILITY
+ _LIBCPP_CONSTEXPR __atomic_base(_Tp __d) _NOEXCEPT : __base(__d) {}
+
+ _LIBCPP_INLINE_VISIBILITY
+ _Tp fetch_add(_Tp __op, memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT
+ {return std::__cxx_atomic_fetch_add(&this->__a_, __op, __m);}
+ _LIBCPP_INLINE_VISIBILITY
+ _Tp fetch_add(_Tp __op, memory_order __m = memory_order_seq_cst) _NOEXCEPT
+ {return std::__cxx_atomic_fetch_add(&this->__a_, __op, __m);}
+ _LIBCPP_INLINE_VISIBILITY
+ _Tp fetch_sub(_Tp __op, memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT
+ {return std::__cxx_atomic_fetch_sub(&this->__a_, __op, __m);}
+ _LIBCPP_INLINE_VISIBILITY
+ _Tp fetch_sub(_Tp __op, memory_order __m = memory_order_seq_cst) _NOEXCEPT
+ {return std::__cxx_atomic_fetch_sub(&this->__a_, __op, __m);}
+ _LIBCPP_INLINE_VISIBILITY
+ _Tp fetch_and(_Tp __op, memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT
+ {return std::__cxx_atomic_fetch_and(&this->__a_, __op, __m);}
+ _LIBCPP_INLINE_VISIBILITY
+ _Tp fetch_and(_Tp __op, memory_order __m = memory_order_seq_cst) _NOEXCEPT
+ {return std::__cxx_atomic_fetch_and(&this->__a_, __op, __m);}
+ _LIBCPP_INLINE_VISIBILITY
+ _Tp fetch_or(_Tp __op, memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT
+ {return std::__cxx_atomic_fetch_or(&this->__a_, __op, __m);}
+ _LIBCPP_INLINE_VISIBILITY
+ _Tp fetch_or(_Tp __op, memory_order __m = memory_order_seq_cst) _NOEXCEPT
+ {return std::__cxx_atomic_fetch_or(&this->__a_, __op, __m);}
+ _LIBCPP_INLINE_VISIBILITY
+ _Tp fetch_xor(_Tp __op, memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT
+ {return std::__cxx_atomic_fetch_xor(&this->__a_, __op, __m);}
+ _LIBCPP_INLINE_VISIBILITY
+ _Tp fetch_xor(_Tp __op, memory_order __m = memory_order_seq_cst) _NOEXCEPT
+ {return std::__cxx_atomic_fetch_xor(&this->__a_, __op, __m);}
+
+ _LIBCPP_INLINE_VISIBILITY
+ _Tp operator++(int) volatile _NOEXCEPT {return fetch_add(_Tp(1));}
+ _LIBCPP_INLINE_VISIBILITY
+ _Tp operator++(int) _NOEXCEPT {return fetch_add(_Tp(1));}
+ _LIBCPP_INLINE_VISIBILITY
+ _Tp operator--(int) volatile _NOEXCEPT {return fetch_sub(_Tp(1));}
+ _LIBCPP_INLINE_VISIBILITY
+ _Tp operator--(int) _NOEXCEPT {return fetch_sub(_Tp(1));}
+ _LIBCPP_INLINE_VISIBILITY
+ _Tp operator++() volatile _NOEXCEPT {return fetch_add(_Tp(1)) + _Tp(1);}
+ _LIBCPP_INLINE_VISIBILITY
+ _Tp operator++() _NOEXCEPT {return fetch_add(_Tp(1)) + _Tp(1);}
+ _LIBCPP_INLINE_VISIBILITY
+ _Tp operator--() volatile _NOEXCEPT {return fetch_sub(_Tp(1)) - _Tp(1);}
+ _LIBCPP_INLINE_VISIBILITY
+ _Tp operator--() _NOEXCEPT {return fetch_sub(_Tp(1)) - _Tp(1);}
+ _LIBCPP_INLINE_VISIBILITY
+ _Tp operator+=(_Tp __op) volatile _NOEXCEPT {return fetch_add(__op) + __op;}
+ _LIBCPP_INLINE_VISIBILITY
+ _Tp operator+=(_Tp __op) _NOEXCEPT {return fetch_add(__op) + __op;}
+ _LIBCPP_INLINE_VISIBILITY
+ _Tp operator-=(_Tp __op) volatile _NOEXCEPT {return fetch_sub(__op) - __op;}
+ _LIBCPP_INLINE_VISIBILITY
+ _Tp operator-=(_Tp __op) _NOEXCEPT {return fetch_sub(__op) - __op;}
+ _LIBCPP_INLINE_VISIBILITY
+ _Tp operator&=(_Tp __op) volatile _NOEXCEPT {return fetch_and(__op) & __op;}
+ _LIBCPP_INLINE_VISIBILITY
+ _Tp operator&=(_Tp __op) _NOEXCEPT {return fetch_and(__op) & __op;}
+ _LIBCPP_INLINE_VISIBILITY
+ _Tp operator|=(_Tp __op) volatile _NOEXCEPT {return fetch_or(__op) | __op;}
+ _LIBCPP_INLINE_VISIBILITY
+ _Tp operator|=(_Tp __op) _NOEXCEPT {return fetch_or(__op) | __op;}
+ _LIBCPP_INLINE_VISIBILITY
+ _Tp operator^=(_Tp __op) volatile _NOEXCEPT {return fetch_xor(__op) ^ __op;}
+ _LIBCPP_INLINE_VISIBILITY
+ _Tp operator^=(_Tp __op) _NOEXCEPT {return fetch_xor(__op) ^ __op;}
+};
+
+_LIBCPP_END_NAMESPACE_STD
+
+#endif // _LIBCPP___ATOMIC_ATOMIC_BASE_H
diff --git a/libcxx/include/__atomic/atomic_flag.h b/libcxx/include/__atomic/atomic_flag.h
new file mode 100644
index 0000000000000..0e7c77f9d2a8a
--- /dev/null
+++ b/libcxx/include/__atomic/atomic_flag.h
@@ -0,0 +1,232 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef _LIBCPP___ATOMIC_ATOMIC_FLAG_H
+#define _LIBCPP___ATOMIC_ATOMIC_FLAG_H
+
+#include <__atomic/atomic_sync.h>
+#include <__atomic/contention_t.h>
+#include <__atomic/cxx_atomic_impl.h>
+#include <__atomic/memory_order.h>
+#include <__chrono/duration.h>
+#include <__config>
+#include <__threading_support>
+#include <cstdint>
+
+#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
+# pragma GCC system_header
+#endif
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+typedef struct atomic_flag
+{
+ __cxx_atomic_impl<_LIBCPP_ATOMIC_FLAG_TYPE> __a_;
+
+ _LIBCPP_INLINE_VISIBILITY
+ bool test(memory_order __m = memory_order_seq_cst) const volatile _NOEXCEPT
+ {return _LIBCPP_ATOMIC_FLAG_TYPE(true) == __cxx_atomic_load(&__a_, __m);}
+ _LIBCPP_INLINE_VISIBILITY
+ bool test(memory_order __m = memory_order_seq_cst) const _NOEXCEPT
+ {return _LIBCPP_ATOMIC_FLAG_TYPE(true) == __cxx_atomic_load(&__a_, __m);}
+
+ _LIBCPP_INLINE_VISIBILITY
+ bool test_and_set(memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT
+ {return __cxx_atomic_exchange(&__a_, _LIBCPP_ATOMIC_FLAG_TYPE(true), __m);}
+ _LIBCPP_INLINE_VISIBILITY
+ bool test_and_set(memory_order __m = memory_order_seq_cst) _NOEXCEPT
+ {return __cxx_atomic_exchange(&__a_, _LIBCPP_ATOMIC_FLAG_TYPE(true), __m);}
+ _LIBCPP_INLINE_VISIBILITY
+ void clear(memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT
+ {__cxx_atomic_store(&__a_, _LIBCPP_ATOMIC_FLAG_TYPE(false), __m);}
+ _LIBCPP_INLINE_VISIBILITY
+ void clear(memory_order __m = memory_order_seq_cst) _NOEXCEPT
+ {__cxx_atomic_store(&__a_, _LIBCPP_ATOMIC_FLAG_TYPE(false), __m);}
+
+ _LIBCPP_AVAILABILITY_SYNC _LIBCPP_INLINE_VISIBILITY
+ void wait(bool __v, memory_order __m = memory_order_seq_cst) const volatile _NOEXCEPT
+ {__cxx_atomic_wait(&__a_, _LIBCPP_ATOMIC_FLAG_TYPE(__v), __m);}
+ _LIBCPP_AVAILABILITY_SYNC _LIBCPP_INLINE_VISIBILITY
+ void wait(bool __v, memory_order __m = memory_order_seq_cst) const _NOEXCEPT
+ {__cxx_atomic_wait(&__a_, _LIBCPP_ATOMIC_FLAG_TYPE(__v), __m);}
+ _LIBCPP_AVAILABILITY_SYNC _LIBCPP_INLINE_VISIBILITY
+ void notify_one() volatile _NOEXCEPT
+ {__cxx_atomic_notify_one(&__a_);}
+ _LIBCPP_AVAILABILITY_SYNC _LIBCPP_INLINE_VISIBILITY
+ void notify_one() _NOEXCEPT
+ {__cxx_atomic_notify_one(&__a_);}
+ _LIBCPP_AVAILABILITY_SYNC _LIBCPP_INLINE_VISIBILITY
+ void notify_all() volatile _NOEXCEPT
+ {__cxx_atomic_notify_all(&__a_);}
+ _LIBCPP_AVAILABILITY_SYNC _LIBCPP_INLINE_VISIBILITY
+ void notify_all() _NOEXCEPT
+ {__cxx_atomic_notify_all(&__a_);}
+
+#if _LIBCPP_STD_VER >= 20
+ _LIBCPP_INLINE_VISIBILITY constexpr
+ atomic_flag() _NOEXCEPT : __a_(false) {}
+#else
+ _LIBCPP_INLINE_VISIBILITY
+ atomic_flag() _NOEXCEPT = default;
+#endif
+
+ _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
+ atomic_flag(bool __b) _NOEXCEPT : __a_(__b) {} // EXTENSION
+
+ atomic_flag(const atomic_flag&) = delete;
+ atomic_flag& operator=(const atomic_flag&) = delete;
+ atomic_flag& operator=(const atomic_flag&) volatile = delete;
+
+} atomic_flag;
+
+
+inline _LIBCPP_INLINE_VISIBILITY
+bool
+atomic_flag_test(const volatile atomic_flag* __o) _NOEXCEPT
+{
+ return __o->test();
+}
+
+inline _LIBCPP_INLINE_VISIBILITY
+bool
+atomic_flag_test(const atomic_flag* __o) _NOEXCEPT
+{
+ return __o->test();
+}
+
+inline _LIBCPP_INLINE_VISIBILITY
+bool
+atomic_flag_test_explicit(const volatile atomic_flag* __o, memory_order __m) _NOEXCEPT
+{
+ return __o->test(__m);
+}
+
+inline _LIBCPP_INLINE_VISIBILITY
+bool
+atomic_flag_test_explicit(const atomic_flag* __o, memory_order __m) _NOEXCEPT
+{
+ return __o->test(__m);
+}
+
+inline _LIBCPP_INLINE_VISIBILITY
+bool
+atomic_flag_test_and_set(volatile atomic_flag* __o) _NOEXCEPT
+{
+ return __o->test_and_set();
+}
+
+inline _LIBCPP_INLINE_VISIBILITY
+bool
+atomic_flag_test_and_set(atomic_flag* __o) _NOEXCEPT
+{
+ return __o->test_and_set();
+}
+
+inline _LIBCPP_INLINE_VISIBILITY
+bool
+atomic_flag_test_and_set_explicit(volatile atomic_flag* __o, memory_order __m) _NOEXCEPT
+{
+ return __o->test_and_set(__m);
+}
+
+inline _LIBCPP_INLINE_VISIBILITY
+bool
+atomic_flag_test_and_set_explicit(atomic_flag* __o, memory_order __m) _NOEXCEPT
+{
+ return __o->test_and_set(__m);
+}
+
+inline _LIBCPP_INLINE_VISIBILITY
+void
+atomic_flag_clear(volatile atomic_flag* __o) _NOEXCEPT
+{
+ __o->clear();
+}
+
+inline _LIBCPP_INLINE_VISIBILITY
+void
+atomic_flag_clear(atomic_flag* __o) _NOEXCEPT
+{
+ __o->clear();
+}
+
+inline _LIBCPP_INLINE_VISIBILITY
+void
+atomic_flag_clear_explicit(volatile atomic_flag* __o, memory_order __m) _NOEXCEPT
+{
+ __o->clear(__m);
+}
+
+inline _LIBCPP_INLINE_VISIBILITY
+void
+atomic_flag_clear_explicit(atomic_flag* __o, memory_order __m) _NOEXCEPT
+{
+ __o->clear(__m);
+}
+
+inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_AVAILABILITY_SYNC
+void
+atomic_flag_wait(const volatile atomic_flag* __o, bool __v) _NOEXCEPT
+{
+ __o->wait(__v);
+}
+
+inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_AVAILABILITY_SYNC
+void
+atomic_flag_wait(const atomic_flag* __o, bool __v) _NOEXCEPT
+{
+ __o->wait(__v);
+}
+
+inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_AVAILABILITY_SYNC
+void
+atomic_flag_wait_explicit(const volatile atomic_flag* __o,
+ bool __v, memory_order __m) _NOEXCEPT
+{
+ __o->wait(__v, __m);
+}
+
+inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_AVAILABILITY_SYNC
+void
+atomic_flag_wait_explicit(const atomic_flag* __o,
+ bool __v, memory_order __m) _NOEXCEPT
+{
+ __o->wait(__v, __m);
+}
+
+inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_AVAILABILITY_SYNC
+void
+atomic_flag_notify_one(volatile atomic_flag* __o) _NOEXCEPT
+{
+ __o->notify_one();
+}
+
+inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_AVAILABILITY_SYNC
+void
+atomic_flag_notify_one(atomic_flag* __o) _NOEXCEPT
+{
+ __o->notify_one();
+}
+
+inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_AVAILABILITY_SYNC
+void
+atomic_flag_notify_all(volatile atomic_flag* __o) _NOEXCEPT
+{
+ __o->notify_all();
+}
+
+inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_AVAILABILITY_SYNC
+void
+atomic_flag_notify_all(atomic_flag* __o) _NOEXCEPT
+{
+ __o->notify_all();
+}
+
+_LIBCPP_END_NAMESPACE_STD
+
+#endif // _LIBCPP___ATOMIC_ATOMIC_FLAG_H
diff --git a/libcxx/include/__atomic/atomic_init.h b/libcxx/include/__atomic/atomic_init.h
new file mode 100644
index 0000000000000..14310aee10c11
--- /dev/null
+++ b/libcxx/include/__atomic/atomic_init.h
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef _LIBCPP___ATOMIC_ATOMIC_INIT_H
+#define _LIBCPP___ATOMIC_ATOMIC_INIT_H
+
+#include <__config>
+
+#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
+# pragma GCC system_header
+#endif
+
+#define ATOMIC_FLAG_INIT {false}
+#define ATOMIC_VAR_INIT(__v) {__v}
+
+#if _LIBCPP_STD_VER >= 20 && !defined(_LIBCPP_DISABLE_DEPRECATION_WARNINGS)
+# if defined(_LIBCPP_CLANG_VER) && _LIBCPP_CLANG_VER >= 1400
+# pragma clang deprecated(ATOMIC_VAR_INIT)
+# endif
+#endif // _LIBCPP_STD_VER >= 20 && !defined(_LIBCPP_DISABLE_DEPRECATION_WARNINGS)
+
+#endif // _LIBCPP___ATOMIC_ATOMIC_INIT_H
diff --git a/libcxx/include/__atomic/atomic_lock_free.h b/libcxx/include/__atomic/atomic_lock_free.h
new file mode 100644
index 0000000000000..d607569ed07da
--- /dev/null
+++ b/libcxx/include/__atomic/atomic_lock_free.h
@@ -0,0 +1,48 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef _LIBCPP___ATOMIC_ATOMIC_LOCK_FREE_H
+#define _LIBCPP___ATOMIC_ATOMIC_LOCK_FREE_H
+
+#include <__config>
+
+#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
+# pragma GCC system_header
+#endif
+
+#if defined(__CLANG_ATOMIC_BOOL_LOCK_FREE)
+# define ATOMIC_BOOL_LOCK_FREE __CLANG_ATOMIC_BOOL_LOCK_FREE
+# define ATOMIC_CHAR_LOCK_FREE __CLANG_ATOMIC_CHAR_LOCK_FREE
+#ifndef _LIBCPP_HAS_NO_CHAR8_T
+# define ATOMIC_CHAR8_T_LOCK_FREE __CLANG_ATOMIC_CHAR8_T_LOCK_FREE
+#endif
+# define ATOMIC_CHAR16_T_LOCK_FREE __CLANG_ATOMIC_CHAR16_T_LOCK_FREE
+# define ATOMIC_CHAR32_T_LOCK_FREE __CLANG_ATOMIC_CHAR32_T_LOCK_FREE
+# define ATOMIC_WCHAR_T_LOCK_FREE __CLANG_ATOMIC_WCHAR_T_LOCK_FREE
+# define ATOMIC_SHORT_LOCK_FREE __CLANG_ATOMIC_SHORT_LOCK_FREE
+# define ATOMIC_INT_LOCK_FREE __CLANG_ATOMIC_INT_LOCK_FREE
+# define ATOMIC_LONG_LOCK_FREE __CLANG_ATOMIC_LONG_LOCK_FREE
+# define ATOMIC_LLONG_LOCK_FREE __CLANG_ATOMIC_LLONG_LOCK_FREE
+# define ATOMIC_POINTER_LOCK_FREE __CLANG_ATOMIC_POINTER_LOCK_FREE
+#elif defined(__GCC_ATOMIC_BOOL_LOCK_FREE)
+# define ATOMIC_BOOL_LOCK_FREE __GCC_ATOMIC_BOOL_LOCK_FREE
+# define ATOMIC_CHAR_LOCK_FREE __GCC_ATOMIC_CHAR_LOCK_FREE
+#ifndef _LIBCPP_HAS_NO_CHAR8_T
+# define ATOMIC_CHAR8_T_LOCK_FREE __GCC_ATOMIC_CHAR8_T_LOCK_FREE
+#endif
+# define ATOMIC_CHAR16_T_LOCK_FREE __GCC_ATOMIC_CHAR16_T_LOCK_FREE
+# define ATOMIC_CHAR32_T_LOCK_FREE __GCC_ATOMIC_CHAR32_T_LOCK_FREE
+# define ATOMIC_WCHAR_T_LOCK_FREE __GCC_ATOMIC_WCHAR_T_LOCK_FREE
+# define ATOMIC_SHORT_LOCK_FREE __GCC_ATOMIC_SHORT_LOCK_FREE
+# define ATOMIC_INT_LOCK_FREE __GCC_ATOMIC_INT_LOCK_FREE
+# define ATOMIC_LONG_LOCK_FREE __GCC_ATOMIC_LONG_LOCK_FREE
+# define ATOMIC_LLONG_LOCK_FREE __GCC_ATOMIC_LLONG_LOCK_FREE
+# define ATOMIC_POINTER_LOCK_FREE __GCC_ATOMIC_POINTER_LOCK_FREE
+#endif
+
+#endif // _LIBCPP___ATOMIC_ATOMIC_LOCK_FREE_H
diff --git a/libcxx/include/__atomic/atomic_sync.h b/libcxx/include/__atomic/atomic_sync.h
new file mode 100644
index 0000000000000..20ef15c64089a
--- /dev/null
+++ b/libcxx/include/__atomic/atomic_sync.h
@@ -0,0 +1,111 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef _LIBCPP___ATOMIC_ATOMIC_SYNC_H
+#define _LIBCPP___ATOMIC_ATOMIC_SYNC_H
+
+#include <__atomic/contention_t.h>
+#include <__atomic/cxx_atomic_impl.h>
+#include <__atomic/memory_order.h>
+#include <__availability>
+#include <__chrono/duration.h>
+#include <__config>
+#include <__thread/poll_with_backoff.h>
+#include <__threading_support>
+#include <__type_traits/decay.h>
+#include <cstring>
+
+#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
+# pragma GCC system_header
+#endif
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+#ifndef _LIBCPP_HAS_NO_THREADS
+
+_LIBCPP_AVAILABILITY_SYNC _LIBCPP_EXPORTED_FROM_ABI void __cxx_atomic_notify_one(void const volatile*);
+_LIBCPP_AVAILABILITY_SYNC _LIBCPP_EXPORTED_FROM_ABI void __cxx_atomic_notify_all(void const volatile*);
+_LIBCPP_AVAILABILITY_SYNC _LIBCPP_EXPORTED_FROM_ABI __cxx_contention_t __libcpp_atomic_monitor(void const volatile*);
+_LIBCPP_AVAILABILITY_SYNC _LIBCPP_EXPORTED_FROM_ABI void __libcpp_atomic_wait(void const volatile*, __cxx_contention_t);
+
+_LIBCPP_AVAILABILITY_SYNC _LIBCPP_EXPORTED_FROM_ABI void __cxx_atomic_notify_one(__cxx_atomic_contention_t const volatile*);
+_LIBCPP_AVAILABILITY_SYNC _LIBCPP_EXPORTED_FROM_ABI void __cxx_atomic_notify_all(__cxx_atomic_contention_t const volatile*);
+_LIBCPP_AVAILABILITY_SYNC _LIBCPP_EXPORTED_FROM_ABI __cxx_contention_t __libcpp_atomic_monitor(__cxx_atomic_contention_t const volatile*);
+_LIBCPP_AVAILABILITY_SYNC _LIBCPP_EXPORTED_FROM_ABI void __libcpp_atomic_wait(__cxx_atomic_contention_t const volatile*, __cxx_contention_t);
+
+template <class _Atp, class _Fn>
+struct __libcpp_atomic_wait_backoff_impl {
+ _Atp* __a;
+ _Fn __test_fn;
+ _LIBCPP_AVAILABILITY_SYNC
+ _LIBCPP_INLINE_VISIBILITY bool operator()(chrono::nanoseconds __elapsed) const
+ {
+ if(__elapsed > chrono::microseconds(64))
+ {
+ auto const __monitor = std::__libcpp_atomic_monitor(__a);
+ if(__test_fn())
+ return true;
+ std::__libcpp_atomic_wait(__a, __monitor);
+ }
+ else if(__elapsed > chrono::microseconds(4))
+ __libcpp_thread_yield();
+ else
+ {} // poll
+ return false;
+ }
+};
+
+template <class _Atp, class _Fn>
+_LIBCPP_AVAILABILITY_SYNC
+_LIBCPP_INLINE_VISIBILITY bool __cxx_atomic_wait(_Atp* __a, _Fn && __test_fn)
+{
+ __libcpp_atomic_wait_backoff_impl<_Atp, typename decay<_Fn>::type> __backoff_fn = {__a, __test_fn};
+ return std::__libcpp_thread_poll_with_backoff(__test_fn, __backoff_fn);
+}
+
+#else // _LIBCPP_HAS_NO_THREADS
+
+template <class _Tp>
+_LIBCPP_INLINE_VISIBILITY void __cxx_atomic_notify_all(__cxx_atomic_impl<_Tp> const volatile*) { }
+template <class _Tp>
+_LIBCPP_INLINE_VISIBILITY void __cxx_atomic_notify_one(__cxx_atomic_impl<_Tp> const volatile*) { }
+template <class _Atp, class _Fn>
+_LIBCPP_INLINE_VISIBILITY bool __cxx_atomic_wait(_Atp*, _Fn && __test_fn)
+{
+ return __libcpp_thread_poll_with_backoff(__test_fn, __spinning_backoff_policy());
+}
+
+#endif // _LIBCPP_HAS_NO_THREADS
+
+template <typename _Tp> _LIBCPP_INLINE_VISIBILITY
+bool __cxx_nonatomic_compare_equal(_Tp const& __lhs, _Tp const& __rhs) {
+ return _VSTD::memcmp(&__lhs, &__rhs, sizeof(_Tp)) == 0;
+}
+
+template <class _Atp, class _Tp>
+struct __cxx_atomic_wait_test_fn_impl {
+ _Atp* __a;
+ _Tp __val;
+ memory_order __order;
+ _LIBCPP_INLINE_VISIBILITY bool operator()() const
+ {
+ return !std::__cxx_nonatomic_compare_equal(std::__cxx_atomic_load(__a, __order), __val);
+ }
+};
+
+template <class _Atp, class _Tp>
+_LIBCPP_AVAILABILITY_SYNC
+_LIBCPP_INLINE_VISIBILITY bool __cxx_atomic_wait(_Atp* __a, _Tp const __val, memory_order __order)
+{
+ __cxx_atomic_wait_test_fn_impl<_Atp, _Tp> __test_fn = {__a, __val, __order};
+ return std::__cxx_atomic_wait(__a, __test_fn);
+}
+
+_LIBCPP_END_NAMESPACE_STD
+
+#endif // _LIBCPP___ATOMIC_ATOMIC_SYNC_H
diff --git a/libcxx/include/__atomic/check_memory_order.h b/libcxx/include/__atomic/check_memory_order.h
new file mode 100644
index 0000000000000..d744312122bd4
--- /dev/null
+++ b/libcxx/include/__atomic/check_memory_order.h
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef _LIBCPP___ATOMIC_CHECK_MEMORY_ORDER_H
+#define _LIBCPP___ATOMIC_CHECK_MEMORY_ORDER_H
+
+#include <__config>
+
+#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
+# pragma GCC system_header
+#endif
+
+#define _LIBCPP_CHECK_STORE_MEMORY_ORDER(__m) \
+ _LIBCPP_DIAGNOSE_WARNING(__m == memory_order_consume || \
+ __m == memory_order_acquire || \
+ __m == memory_order_acq_rel, \
+ "memory order argument to atomic operation is invalid")
+
+#define _LIBCPP_CHECK_LOAD_MEMORY_ORDER(__m) \
+ _LIBCPP_DIAGNOSE_WARNING(__m == memory_order_release || \
+ __m == memory_order_acq_rel, \
+ "memory order argument to atomic operation is invalid")
+
+#define _LIBCPP_CHECK_EXCHANGE_MEMORY_ORDER(__m, __f) \
+ _LIBCPP_DIAGNOSE_WARNING(__f == memory_order_release || \
+ __f == memory_order_acq_rel, \
+ "memory order argument to atomic operation is invalid")
+
+#endif // _LIBCPP___ATOMIC_CHECK_MEMORY_ORDER_H
diff --git a/libcxx/include/__atomic/contention_t.h b/libcxx/include/__atomic/contention_t.h
new file mode 100644
index 0000000000000..1d8d02430b4f0
--- /dev/null
+++ b/libcxx/include/__atomic/contention_t.h
@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef _LIBCPP___ATOMIC_CONTENTION_T_H
+#define _LIBCPP___ATOMIC_CONTENTION_T_H
+
+#include <__atomic/cxx_atomic_impl.h>
+#include <__config>
+#include <cstdint>
+
+#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
+# pragma GCC system_header
+#endif
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+#if defined(__linux__) || (defined(_AIX) && !defined(__64BIT__))
+ using __cxx_contention_t = int32_t;
+#else
+ using __cxx_contention_t = int64_t;
+#endif // __linux__ || (_AIX && !__64BIT__)
+
+using __cxx_atomic_contention_t = __cxx_atomic_impl<__cxx_contention_t>;
+
+_LIBCPP_END_NAMESPACE_STD
+
+#endif // _LIBCPP___ATOMIC_CONTENTION_T_H
diff --git a/libcxx/include/__atomic/cxx_atomic_impl.h b/libcxx/include/__atomic/cxx_atomic_impl.h
new file mode 100644
index 0000000000000..f8dc20c93b930
--- /dev/null
+++ b/libcxx/include/__atomic/cxx_atomic_impl.h
@@ -0,0 +1,791 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef _LIBCPP___ATOMIC_CXX_ATOMIC_IMPL_H
+#define _LIBCPP___ATOMIC_CXX_ATOMIC_IMPL_H
+
+#include <__atomic/memory_order.h>
+#include <__config>
+#include <__type_traits/is_assignable.h>
+#include <__type_traits/is_trivially_copyable.h>
+#include <__type_traits/remove_const.h>
+#include <cstddef>
+
+#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
+# pragma GCC system_header
+#endif
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+#if defined(_LIBCPP_HAS_GCC_ATOMIC_IMP) || \
+ defined(_LIBCPP_ATOMIC_ONLY_USE_BUILTINS)
+
+// [atomics.types.generic]p1 guarantees _Tp is trivially copyable. Because
+// the default operator= in an object is not volatile, a byte-by-byte copy
+// is required.
+template <typename _Tp, typename _Tv> _LIBCPP_INLINE_VISIBILITY
+typename enable_if<is_assignable<_Tp&, _Tv>::value>::type
+__cxx_atomic_assign_volatile(_Tp& __a_value, _Tv const& __val) {
+ __a_value = __val;
+}
+template <typename _Tp, typename _Tv> _LIBCPP_INLINE_VISIBILITY
+typename enable_if<is_assignable<_Tp&, _Tv>::value>::type
+__cxx_atomic_assign_volatile(_Tp volatile& __a_value, _Tv volatile const& __val) {
+ volatile char* __to = reinterpret_cast<volatile char*>(&__a_value);
+ volatile char* __end = __to + sizeof(_Tp);
+ volatile const char* __from = reinterpret_cast<volatile const char*>(&__val);
+ while (__to != __end)
+ *__to++ = *__from++;
+}
+
+#endif
+
+#if defined(_LIBCPP_HAS_GCC_ATOMIC_IMP)
+
+template <typename _Tp>
+struct __cxx_atomic_base_impl {
+
+ _LIBCPP_INLINE_VISIBILITY
+#ifndef _LIBCPP_CXX03_LANG
+ __cxx_atomic_base_impl() _NOEXCEPT = default;
+#else
+ __cxx_atomic_base_impl() _NOEXCEPT : __a_value() {}
+#endif // _LIBCPP_CXX03_LANG
+ _LIBCPP_CONSTEXPR explicit __cxx_atomic_base_impl(_Tp value) _NOEXCEPT
+ : __a_value(value) {}
+ _Tp __a_value;
+};
+
+_LIBCPP_INLINE_VISIBILITY inline _LIBCPP_CONSTEXPR int __to_gcc_order(memory_order __order) {
+ // Avoid switch statement to make this a constexpr.
+ return __order == memory_order_relaxed ? __ATOMIC_RELAXED:
+ (__order == memory_order_acquire ? __ATOMIC_ACQUIRE:
+ (__order == memory_order_release ? __ATOMIC_RELEASE:
+ (__order == memory_order_seq_cst ? __ATOMIC_SEQ_CST:
+ (__order == memory_order_acq_rel ? __ATOMIC_ACQ_REL:
+ __ATOMIC_CONSUME))));
+}
+
+_LIBCPP_INLINE_VISIBILITY inline _LIBCPP_CONSTEXPR int __to_gcc_failure_order(memory_order __order) {
+ // Avoid switch statement to make this a constexpr.
+ return __order == memory_order_relaxed ? __ATOMIC_RELAXED:
+ (__order == memory_order_acquire ? __ATOMIC_ACQUIRE:
+ (__order == memory_order_release ? __ATOMIC_RELAXED:
+ (__order == memory_order_seq_cst ? __ATOMIC_SEQ_CST:
+ (__order == memory_order_acq_rel ? __ATOMIC_ACQUIRE:
+ __ATOMIC_CONSUME))));
+}
+
+template <typename _Tp>
+_LIBCPP_INLINE_VISIBILITY
+void __cxx_atomic_init(volatile __cxx_atomic_base_impl<_Tp>* __a, _Tp __val) {
+ __cxx_atomic_assign_volatile(__a->__a_value, __val);
+}
+
+template <typename _Tp>
+_LIBCPP_INLINE_VISIBILITY
+void __cxx_atomic_init(__cxx_atomic_base_impl<_Tp>* __a, _Tp __val) {
+ __a->__a_value = __val;
+}
+
+_LIBCPP_INLINE_VISIBILITY inline
+void __cxx_atomic_thread_fence(memory_order __order) {
+ __atomic_thread_fence(__to_gcc_order(__order));
+}
+
+_LIBCPP_INLINE_VISIBILITY inline
+void __cxx_atomic_signal_fence(memory_order __order) {
+ __atomic_signal_fence(__to_gcc_order(__order));
+}
+
+template <typename _Tp>
+_LIBCPP_INLINE_VISIBILITY
+void __cxx_atomic_store(volatile __cxx_atomic_base_impl<_Tp>* __a, _Tp __val,
+ memory_order __order) {
+ __atomic_store(&__a->__a_value, &__val,
+ __to_gcc_order(__order));
+}
+
+template <typename _Tp>
+_LIBCPP_INLINE_VISIBILITY
+void __cxx_atomic_store(__cxx_atomic_base_impl<_Tp>* __a, _Tp __val,
+ memory_order __order) {
+ __atomic_store(&__a->__a_value, &__val,
+ __to_gcc_order(__order));
+}
+
+template <typename _Tp>
+_LIBCPP_INLINE_VISIBILITY
+_Tp __cxx_atomic_load(const volatile __cxx_atomic_base_impl<_Tp>* __a,
+ memory_order __order) {
+ _Tp __ret;
+ __atomic_load(&__a->__a_value, &__ret,
+ __to_gcc_order(__order));
+ return __ret;
+}
+
+template <typename _Tp>
+_LIBCPP_INLINE_VISIBILITY
+_Tp __cxx_atomic_load(const __cxx_atomic_base_impl<_Tp>* __a, memory_order __order) {
+ _Tp __ret;
+ __atomic_load(&__a->__a_value, &__ret,
+ __to_gcc_order(__order));
+ return __ret;
+}
+
+template <typename _Tp>
+_LIBCPP_INLINE_VISIBILITY
+_Tp __cxx_atomic_exchange(volatile __cxx_atomic_base_impl<_Tp>* __a,
+ _Tp __value, memory_order __order) {
+ _Tp __ret;
+ __atomic_exchange(&__a->__a_value, &__value, &__ret,
+ __to_gcc_order(__order));
+ return __ret;
+}
+
+template <typename _Tp>
+_LIBCPP_INLINE_VISIBILITY
+_Tp __cxx_atomic_exchange(__cxx_atomic_base_impl<_Tp>* __a, _Tp __value,
+ memory_order __order) {
+ _Tp __ret;
+ __atomic_exchange(&__a->__a_value, &__value, &__ret,
+ __to_gcc_order(__order));
+ return __ret;
+}
+
+template <typename _Tp>
+_LIBCPP_INLINE_VISIBILITY
+bool __cxx_atomic_compare_exchange_strong(
+ volatile __cxx_atomic_base_impl<_Tp>* __a, _Tp* __expected, _Tp __value,
+ memory_order __success, memory_order __failure) {
+ return __atomic_compare_exchange(&__a->__a_value, __expected, &__value,
+ false,
+ __to_gcc_order(__success),
+ __to_gcc_failure_order(__failure));
+}
+
+template <typename _Tp>
+_LIBCPP_INLINE_VISIBILITY
+bool __cxx_atomic_compare_exchange_strong(
+ __cxx_atomic_base_impl<_Tp>* __a, _Tp* __expected, _Tp __value, memory_order __success,
+ memory_order __failure) {
+ return __atomic_compare_exchange(&__a->__a_value, __expected, &__value,
+ false,
+ __to_gcc_order(__success),
+ __to_gcc_failure_order(__failure));
+}
+
+template <typename _Tp>
+_LIBCPP_INLINE_VISIBILITY
+bool __cxx_atomic_compare_exchange_weak(
+ volatile __cxx_atomic_base_impl<_Tp>* __a, _Tp* __expected, _Tp __value,
+ memory_order __success, memory_order __failure) {
+ return __atomic_compare_exchange(&__a->__a_value, __expected, &__value,
+ true,
+ __to_gcc_order(__success),
+ __to_gcc_failure_order(__failure));
+}
+
+template <typename _Tp>
+_LIBCPP_INLINE_VISIBILITY
+bool __cxx_atomic_compare_exchange_weak(
+ __cxx_atomic_base_impl<_Tp>* __a, _Tp* __expected, _Tp __value, memory_order __success,
+ memory_order __failure) {
+ return __atomic_compare_exchange(&__a->__a_value, __expected, &__value,
+ true,
+ __to_gcc_order(__success),
+ __to_gcc_failure_order(__failure));
+}
+
+template <typename _Tp>
+struct __skip_amt { enum {value = 1}; };
+
+template <typename _Tp>
+struct __skip_amt<_Tp*> { enum {value = sizeof(_Tp)}; };
+
+// FIXME: Haven't figured out what the spec says about using arrays with
+// atomic_fetch_add. Force a failure rather than creating bad behavior.
+template <typename _Tp>
+struct __skip_amt<_Tp[]> { };
+template <typename _Tp, int n>
+struct __skip_amt<_Tp[n]> { };
+
+template <typename _Tp, typename _Td>
+_LIBCPP_INLINE_VISIBILITY
+_Tp __cxx_atomic_fetch_add(volatile __cxx_atomic_base_impl<_Tp>* __a,
+ _Td __delta, memory_order __order) {
+ return __atomic_fetch_add(&__a->__a_value, __delta * __skip_amt<_Tp>::value,
+ __to_gcc_order(__order));
+}
+
+template <typename _Tp, typename _Td>
+_LIBCPP_INLINE_VISIBILITY
+_Tp __cxx_atomic_fetch_add(__cxx_atomic_base_impl<_Tp>* __a, _Td __delta,
+ memory_order __order) {
+ return __atomic_fetch_add(&__a->__a_value, __delta * __skip_amt<_Tp>::value,
+ __to_gcc_order(__order));
+}
+
+template <typename _Tp, typename _Td>
+_LIBCPP_INLINE_VISIBILITY
+_Tp __cxx_atomic_fetch_sub(volatile __cxx_atomic_base_impl<_Tp>* __a,
+ _Td __delta, memory_order __order) {
+ return __atomic_fetch_sub(&__a->__a_value, __delta * __skip_amt<_Tp>::value,
+ __to_gcc_order(__order));
+}
+
+template <typename _Tp, typename _Td>
+_LIBCPP_INLINE_VISIBILITY
+_Tp __cxx_atomic_fetch_sub(__cxx_atomic_base_impl<_Tp>* __a, _Td __delta,
+ memory_order __order) {
+ return __atomic_fetch_sub(&__a->__a_value, __delta * __skip_amt<_Tp>::value,
+ __to_gcc_order(__order));
+}
+
+template <typename _Tp>
+_LIBCPP_INLINE_VISIBILITY
+_Tp __cxx_atomic_fetch_and(volatile __cxx_atomic_base_impl<_Tp>* __a,
+ _Tp __pattern, memory_order __order) {
+ return __atomic_fetch_and(&__a->__a_value, __pattern,
+ __to_gcc_order(__order));
+}
+
+template <typename _Tp>
+_LIBCPP_INLINE_VISIBILITY
+_Tp __cxx_atomic_fetch_and(__cxx_atomic_base_impl<_Tp>* __a,
+ _Tp __pattern, memory_order __order) {
+ return __atomic_fetch_and(&__a->__a_value, __pattern,
+ __to_gcc_order(__order));
+}
+
+template <typename _Tp>
+_LIBCPP_INLINE_VISIBILITY
+_Tp __cxx_atomic_fetch_or(volatile __cxx_atomic_base_impl<_Tp>* __a,
+ _Tp __pattern, memory_order __order) {
+ return __atomic_fetch_or(&__a->__a_value, __pattern,
+ __to_gcc_order(__order));
+}
+
+template <typename _Tp>
+_LIBCPP_INLINE_VISIBILITY
+_Tp __cxx_atomic_fetch_or(__cxx_atomic_base_impl<_Tp>* __a, _Tp __pattern,
+ memory_order __order) {
+ return __atomic_fetch_or(&__a->__a_value, __pattern,
+ __to_gcc_order(__order));
+}
+
+template <typename _Tp>
+_LIBCPP_INLINE_VISIBILITY
+_Tp __cxx_atomic_fetch_xor(volatile __cxx_atomic_base_impl<_Tp>* __a,
+ _Tp __pattern, memory_order __order) {
+ return __atomic_fetch_xor(&__a->__a_value, __pattern,
+ __to_gcc_order(__order));
+}
+
+template <typename _Tp>
+_LIBCPP_INLINE_VISIBILITY
+_Tp __cxx_atomic_fetch_xor(__cxx_atomic_base_impl<_Tp>* __a, _Tp __pattern,
+ memory_order __order) {
+ return __atomic_fetch_xor(&__a->__a_value, __pattern,
+ __to_gcc_order(__order));
+}
+
+#define __cxx_atomic_is_lock_free(__s) __atomic_is_lock_free(__s, 0)
+
+#elif defined(_LIBCPP_HAS_C_ATOMIC_IMP)
+
+template <typename _Tp>
+struct __cxx_atomic_base_impl {
+
+ _LIBCPP_INLINE_VISIBILITY
+#ifndef _LIBCPP_CXX03_LANG
+ __cxx_atomic_base_impl() _NOEXCEPT = default;
+#else
+ __cxx_atomic_base_impl() _NOEXCEPT : __a_value() {}
+#endif // _LIBCPP_CXX03_LANG
+ _LIBCPP_CONSTEXPR explicit __cxx_atomic_base_impl(_Tp __value) _NOEXCEPT
+ : __a_value(__value) {}
+ _LIBCPP_DISABLE_EXTENSION_WARNING _Atomic(_Tp) __a_value;
+};
+
+#define __cxx_atomic_is_lock_free(__s) __c11_atomic_is_lock_free(__s)
+
+_LIBCPP_INLINE_VISIBILITY inline
+void __cxx_atomic_thread_fence(memory_order __order) _NOEXCEPT {
+ __c11_atomic_thread_fence(static_cast<__memory_order_underlying_t>(__order));
+}
+
+_LIBCPP_INLINE_VISIBILITY inline
+void __cxx_atomic_signal_fence(memory_order __order) _NOEXCEPT {
+ __c11_atomic_signal_fence(static_cast<__memory_order_underlying_t>(__order));
+}
+
+template<class _Tp>
+_LIBCPP_INLINE_VISIBILITY
+void __cxx_atomic_init(__cxx_atomic_base_impl<_Tp> volatile* __a, _Tp __val) _NOEXCEPT {
+ __c11_atomic_init(&__a->__a_value, __val);
+}
+template<class _Tp>
+_LIBCPP_INLINE_VISIBILITY
+void __cxx_atomic_init(__cxx_atomic_base_impl<_Tp> * __a, _Tp __val) _NOEXCEPT {
+ __c11_atomic_init(&__a->__a_value, __val);
+}
+
+template<class _Tp>
+_LIBCPP_INLINE_VISIBILITY
+void __cxx_atomic_store(__cxx_atomic_base_impl<_Tp> volatile* __a, _Tp __val, memory_order __order) _NOEXCEPT {
+ __c11_atomic_store(&__a->__a_value, __val, static_cast<__memory_order_underlying_t>(__order));
+}
+template<class _Tp>
+_LIBCPP_INLINE_VISIBILITY
+void __cxx_atomic_store(__cxx_atomic_base_impl<_Tp> * __a, _Tp __val, memory_order __order) _NOEXCEPT {
+ __c11_atomic_store(&__a->__a_value, __val, static_cast<__memory_order_underlying_t>(__order));
+}
+
+template<class _Tp>
+_LIBCPP_INLINE_VISIBILITY
+_Tp __cxx_atomic_load(__cxx_atomic_base_impl<_Tp> const volatile* __a, memory_order __order) _NOEXCEPT {
+ using __ptr_type = __remove_const_t<decltype(__a->__a_value)>*;
+ return __c11_atomic_load(const_cast<__ptr_type>(&__a->__a_value), static_cast<__memory_order_underlying_t>(__order));
+}
+template<class _Tp>
+_LIBCPP_INLINE_VISIBILITY
+_Tp __cxx_atomic_load(__cxx_atomic_base_impl<_Tp> const* __a, memory_order __order) _NOEXCEPT {
+ using __ptr_type = __remove_const_t<decltype(__a->__a_value)>*;
+ return __c11_atomic_load(const_cast<__ptr_type>(&__a->__a_value), static_cast<__memory_order_underlying_t>(__order));
+}
+
+template<class _Tp>
+_LIBCPP_INLINE_VISIBILITY
+_Tp __cxx_atomic_exchange(__cxx_atomic_base_impl<_Tp> volatile* __a, _Tp __value, memory_order __order) _NOEXCEPT {
+ return __c11_atomic_exchange(&__a->__a_value, __value, static_cast<__memory_order_underlying_t>(__order));
+}
+template<class _Tp>
+_LIBCPP_INLINE_VISIBILITY
+_Tp __cxx_atomic_exchange(__cxx_atomic_base_impl<_Tp> * __a, _Tp __value, memory_order __order) _NOEXCEPT {
+ return __c11_atomic_exchange(&__a->__a_value, __value, static_cast<__memory_order_underlying_t>(__order));
+}
+
+_LIBCPP_INLINE_VISIBILITY inline _LIBCPP_CONSTEXPR memory_order __to_failure_order(memory_order __order) {
+ // Avoid switch statement to make this a constexpr.
+ return __order == memory_order_release ? memory_order_relaxed:
+ (__order == memory_order_acq_rel ? memory_order_acquire:
+ __order);
+}
+
+template<class _Tp>
+_LIBCPP_INLINE_VISIBILITY
+bool __cxx_atomic_compare_exchange_strong(__cxx_atomic_base_impl<_Tp> volatile* __a, _Tp* __expected, _Tp __value, memory_order __success, memory_order __failure) _NOEXCEPT {
+ return __c11_atomic_compare_exchange_strong(&__a->__a_value, __expected, __value, static_cast<__memory_order_underlying_t>(__success), static_cast<__memory_order_underlying_t>(__to_failure_order(__failure)));
+}
+template<class _Tp>
+_LIBCPP_INLINE_VISIBILITY
+bool __cxx_atomic_compare_exchange_strong(__cxx_atomic_base_impl<_Tp> * __a, _Tp* __expected, _Tp __value, memory_order __success, memory_order __failure) _NOEXCEPT {
+ return __c11_atomic_compare_exchange_strong(&__a->__a_value, __expected, __value, static_cast<__memory_order_underlying_t>(__success), static_cast<__memory_order_underlying_t>(__to_failure_order(__failure)));
+}
+
+template<class _Tp>
+_LIBCPP_INLINE_VISIBILITY
+bool __cxx_atomic_compare_exchange_weak(__cxx_atomic_base_impl<_Tp> volatile* __a, _Tp* __expected, _Tp __value, memory_order __success, memory_order __failure) _NOEXCEPT {
+ return __c11_atomic_compare_exchange_weak(&__a->__a_value, __expected, __value, static_cast<__memory_order_underlying_t>(__success), static_cast<__memory_order_underlying_t>(__to_failure_order(__failure)));
+}
+template<class _Tp>
+_LIBCPP_INLINE_VISIBILITY
+bool __cxx_atomic_compare_exchange_weak(__cxx_atomic_base_impl<_Tp> * __a, _Tp* __expected, _Tp __value, memory_order __success, memory_order __failure) _NOEXCEPT {
+ return __c11_atomic_compare_exchange_weak(&__a->__a_value, __expected, __value, static_cast<__memory_order_underlying_t>(__success), static_cast<__memory_order_underlying_t>(__to_failure_order(__failure)));
+}
+
+template<class _Tp>
+_LIBCPP_INLINE_VISIBILITY
+_Tp __cxx_atomic_fetch_add(__cxx_atomic_base_impl<_Tp> volatile* __a, _Tp __delta, memory_order __order) _NOEXCEPT {
+ return __c11_atomic_fetch_add(&__a->__a_value, __delta, static_cast<__memory_order_underlying_t>(__order));
+}
+template<class _Tp>
+_LIBCPP_INLINE_VISIBILITY
+_Tp __cxx_atomic_fetch_add(__cxx_atomic_base_impl<_Tp> * __a, _Tp __delta, memory_order __order) _NOEXCEPT {
+ return __c11_atomic_fetch_add(&__a->__a_value, __delta, static_cast<__memory_order_underlying_t>(__order));
+}
+
+template<class _Tp>
+_LIBCPP_INLINE_VISIBILITY
+_Tp* __cxx_atomic_fetch_add(__cxx_atomic_base_impl<_Tp*> volatile* __a, ptr
diff _t __delta, memory_order __order) _NOEXCEPT {
+ return __c11_atomic_fetch_add(&__a->__a_value, __delta, static_cast<__memory_order_underlying_t>(__order));
+}
+template<class _Tp>
+_LIBCPP_INLINE_VISIBILITY
+_Tp* __cxx_atomic_fetch_add(__cxx_atomic_base_impl<_Tp*> * __a, ptr
diff _t __delta, memory_order __order) _NOEXCEPT {
+ return __c11_atomic_fetch_add(&__a->__a_value, __delta, static_cast<__memory_order_underlying_t>(__order));
+}
+
+template<class _Tp>
+_LIBCPP_INLINE_VISIBILITY
+_Tp __cxx_atomic_fetch_sub(__cxx_atomic_base_impl<_Tp> volatile* __a, _Tp __delta, memory_order __order) _NOEXCEPT {
+ return __c11_atomic_fetch_sub(&__a->__a_value, __delta, static_cast<__memory_order_underlying_t>(__order));
+}
+template<class _Tp>
+_LIBCPP_INLINE_VISIBILITY
+_Tp __cxx_atomic_fetch_sub(__cxx_atomic_base_impl<_Tp> * __a, _Tp __delta, memory_order __order) _NOEXCEPT {
+ return __c11_atomic_fetch_sub(&__a->__a_value, __delta, static_cast<__memory_order_underlying_t>(__order));
+}
+template<class _Tp>
+_LIBCPP_INLINE_VISIBILITY
+_Tp* __cxx_atomic_fetch_sub(__cxx_atomic_base_impl<_Tp*> volatile* __a, ptr
diff _t __delta, memory_order __order) _NOEXCEPT {
+ return __c11_atomic_fetch_sub(&__a->__a_value, __delta, static_cast<__memory_order_underlying_t>(__order));
+}
+template<class _Tp>
+_LIBCPP_INLINE_VISIBILITY
+_Tp* __cxx_atomic_fetch_sub(__cxx_atomic_base_impl<_Tp*> * __a, ptr
diff _t __delta, memory_order __order) _NOEXCEPT {
+ return __c11_atomic_fetch_sub(&__a->__a_value, __delta, static_cast<__memory_order_underlying_t>(__order));
+}
+
+template<class _Tp>
+_LIBCPP_INLINE_VISIBILITY
+_Tp __cxx_atomic_fetch_and(__cxx_atomic_base_impl<_Tp> volatile* __a, _Tp __pattern, memory_order __order) _NOEXCEPT {
+ return __c11_atomic_fetch_and(&__a->__a_value, __pattern, static_cast<__memory_order_underlying_t>(__order));
+}
+template<class _Tp>
+_LIBCPP_INLINE_VISIBILITY
+_Tp __cxx_atomic_fetch_and(__cxx_atomic_base_impl<_Tp> * __a, _Tp __pattern, memory_order __order) _NOEXCEPT {
+ return __c11_atomic_fetch_and(&__a->__a_value, __pattern, static_cast<__memory_order_underlying_t>(__order));
+}
+
+template<class _Tp>
+_LIBCPP_INLINE_VISIBILITY
+_Tp __cxx_atomic_fetch_or(__cxx_atomic_base_impl<_Tp> volatile* __a, _Tp __pattern, memory_order __order) _NOEXCEPT {
+ return __c11_atomic_fetch_or(&__a->__a_value, __pattern, static_cast<__memory_order_underlying_t>(__order));
+}
+template<class _Tp>
+_LIBCPP_INLINE_VISIBILITY
+_Tp __cxx_atomic_fetch_or(__cxx_atomic_base_impl<_Tp> * __a, _Tp __pattern, memory_order __order) _NOEXCEPT {
+ return __c11_atomic_fetch_or(&__a->__a_value, __pattern, static_cast<__memory_order_underlying_t>(__order));
+}
+
+template<class _Tp>
+_LIBCPP_INLINE_VISIBILITY
+_Tp __cxx_atomic_fetch_xor(__cxx_atomic_base_impl<_Tp> volatile* __a, _Tp __pattern, memory_order __order) _NOEXCEPT {
+ return __c11_atomic_fetch_xor(&__a->__a_value, __pattern, static_cast<__memory_order_underlying_t>(__order));
+}
+template<class _Tp>
+_LIBCPP_INLINE_VISIBILITY
+_Tp __cxx_atomic_fetch_xor(__cxx_atomic_base_impl<_Tp> * __a, _Tp __pattern, memory_order __order) _NOEXCEPT {
+ return __c11_atomic_fetch_xor(&__a->__a_value, __pattern, static_cast<__memory_order_underlying_t>(__order));
+}
+
+#endif // _LIBCPP_HAS_GCC_ATOMIC_IMP, _LIBCPP_HAS_C_ATOMIC_IMP
+
+#ifdef _LIBCPP_ATOMIC_ONLY_USE_BUILTINS
+
+template<typename _Tp>
+struct __cxx_atomic_lock_impl {
+
+ _LIBCPP_INLINE_VISIBILITY
+ __cxx_atomic_lock_impl() _NOEXCEPT
+ : __a_value(), __a_lock(0) {}
+ _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR explicit
+ __cxx_atomic_lock_impl(_Tp value) _NOEXCEPT
+ : __a_value(value), __a_lock(0) {}
+
+ _Tp __a_value;
+ mutable __cxx_atomic_base_impl<_LIBCPP_ATOMIC_FLAG_TYPE> __a_lock;
+
+ _LIBCPP_INLINE_VISIBILITY void __lock() const volatile {
+ while(1 == __cxx_atomic_exchange(&__a_lock, _LIBCPP_ATOMIC_FLAG_TYPE(true), memory_order_acquire))
+ /*spin*/;
+ }
+ _LIBCPP_INLINE_VISIBILITY void __lock() const {
+ while(1 == __cxx_atomic_exchange(&__a_lock, _LIBCPP_ATOMIC_FLAG_TYPE(true), memory_order_acquire))
+ /*spin*/;
+ }
+ _LIBCPP_INLINE_VISIBILITY void __unlock() const volatile {
+ __cxx_atomic_store(&__a_lock, _LIBCPP_ATOMIC_FLAG_TYPE(false), memory_order_release);
+ }
+ _LIBCPP_INLINE_VISIBILITY void __unlock() const {
+ __cxx_atomic_store(&__a_lock, _LIBCPP_ATOMIC_FLAG_TYPE(false), memory_order_release);
+ }
+ _LIBCPP_INLINE_VISIBILITY _Tp __read() const volatile {
+ __lock();
+ _Tp __old;
+ __cxx_atomic_assign_volatile(__old, __a_value);
+ __unlock();
+ return __old;
+ }
+ _LIBCPP_INLINE_VISIBILITY _Tp __read() const {
+ __lock();
+ _Tp __old = __a_value;
+ __unlock();
+ return __old;
+ }
+};
+
+template <typename _Tp>
+_LIBCPP_INLINE_VISIBILITY
+void __cxx_atomic_init(volatile __cxx_atomic_lock_impl<_Tp>* __a, _Tp __val) {
+ __cxx_atomic_assign_volatile(__a->__a_value, __val);
+}
+template <typename _Tp>
+_LIBCPP_INLINE_VISIBILITY
+void __cxx_atomic_init(__cxx_atomic_lock_impl<_Tp>* __a, _Tp __val) {
+ __a->__a_value = __val;
+}
+
+template <typename _Tp>
+_LIBCPP_INLINE_VISIBILITY
+void __cxx_atomic_store(volatile __cxx_atomic_lock_impl<_Tp>* __a, _Tp __val, memory_order) {
+ __a->__lock();
+ __cxx_atomic_assign_volatile(__a->__a_value, __val);
+ __a->__unlock();
+}
+template <typename _Tp>
+_LIBCPP_INLINE_VISIBILITY
+void __cxx_atomic_store(__cxx_atomic_lock_impl<_Tp>* __a, _Tp __val, memory_order) {
+ __a->__lock();
+ __a->__a_value = __val;
+ __a->__unlock();
+}
+
+template <typename _Tp>
+_LIBCPP_INLINE_VISIBILITY
+_Tp __cxx_atomic_load(const volatile __cxx_atomic_lock_impl<_Tp>* __a, memory_order) {
+ return __a->__read();
+}
+template <typename _Tp>
+_LIBCPP_INLINE_VISIBILITY
+_Tp __cxx_atomic_load(const __cxx_atomic_lock_impl<_Tp>* __a, memory_order) {
+ return __a->__read();
+}
+
+template <typename _Tp>
+_LIBCPP_INLINE_VISIBILITY
+_Tp __cxx_atomic_exchange(volatile __cxx_atomic_lock_impl<_Tp>* __a, _Tp __value, memory_order) {
+ __a->__lock();
+ _Tp __old;
+ __cxx_atomic_assign_volatile(__old, __a->__a_value);
+ __cxx_atomic_assign_volatile(__a->__a_value, __value);
+ __a->__unlock();
+ return __old;
+}
+template <typename _Tp>
+_LIBCPP_INLINE_VISIBILITY
+_Tp __cxx_atomic_exchange(__cxx_atomic_lock_impl<_Tp>* __a, _Tp __value, memory_order) {
+ __a->__lock();
+ _Tp __old = __a->__a_value;
+ __a->__a_value = __value;
+ __a->__unlock();
+ return __old;
+}
+
+template <typename _Tp>
+_LIBCPP_INLINE_VISIBILITY
+bool __cxx_atomic_compare_exchange_strong(volatile __cxx_atomic_lock_impl<_Tp>* __a,
+ _Tp* __expected, _Tp __value, memory_order, memory_order) {
+ _Tp __temp;
+ __a->__lock();
+ __cxx_atomic_assign_volatile(__temp, __a->__a_value);
+ bool __ret = (_VSTD::memcmp(&__temp, __expected, sizeof(_Tp)) == 0);
+ if(__ret)
+ __cxx_atomic_assign_volatile(__a->__a_value, __value);
+ else
+ __cxx_atomic_assign_volatile(*__expected, __a->__a_value);
+ __a->__unlock();
+ return __ret;
+}
+template <typename _Tp>
+_LIBCPP_INLINE_VISIBILITY
+bool __cxx_atomic_compare_exchange_strong(__cxx_atomic_lock_impl<_Tp>* __a,
+ _Tp* __expected, _Tp __value, memory_order, memory_order) {
+ __a->__lock();
+ bool __ret = (_VSTD::memcmp(&__a->__a_value, __expected, sizeof(_Tp)) == 0);
+ if(__ret)
+ _VSTD::memcpy(&__a->__a_value, &__value, sizeof(_Tp));
+ else
+ _VSTD::memcpy(__expected, &__a->__a_value, sizeof(_Tp));
+ __a->__unlock();
+ return __ret;
+}
+
+template <typename _Tp>
+_LIBCPP_INLINE_VISIBILITY
+bool __cxx_atomic_compare_exchange_weak(volatile __cxx_atomic_lock_impl<_Tp>* __a,
+ _Tp* __expected, _Tp __value, memory_order, memory_order) {
+ _Tp __temp;
+ __a->__lock();
+ __cxx_atomic_assign_volatile(__temp, __a->__a_value);
+ bool __ret = (_VSTD::memcmp(&__temp, __expected, sizeof(_Tp)) == 0);
+ if(__ret)
+ __cxx_atomic_assign_volatile(__a->__a_value, __value);
+ else
+ __cxx_atomic_assign_volatile(*__expected, __a->__a_value);
+ __a->__unlock();
+ return __ret;
+}
+template <typename _Tp>
+_LIBCPP_INLINE_VISIBILITY
+bool __cxx_atomic_compare_exchange_weak(__cxx_atomic_lock_impl<_Tp>* __a,
+ _Tp* __expected, _Tp __value, memory_order, memory_order) {
+ __a->__lock();
+ bool __ret = (_VSTD::memcmp(&__a->__a_value, __expected, sizeof(_Tp)) == 0);
+ if(__ret)
+ _VSTD::memcpy(&__a->__a_value, &__value, sizeof(_Tp));
+ else
+ _VSTD::memcpy(__expected, &__a->__a_value, sizeof(_Tp));
+ __a->__unlock();
+ return __ret;
+}
+
+template <typename _Tp, typename _Td>
+_LIBCPP_INLINE_VISIBILITY
+_Tp __cxx_atomic_fetch_add(volatile __cxx_atomic_lock_impl<_Tp>* __a,
+ _Td __delta, memory_order) {
+ __a->__lock();
+ _Tp __old;
+ __cxx_atomic_assign_volatile(__old, __a->__a_value);
+ __cxx_atomic_assign_volatile(__a->__a_value, _Tp(__old + __delta));
+ __a->__unlock();
+ return __old;
+}
+template <typename _Tp, typename _Td>
+_LIBCPP_INLINE_VISIBILITY
+_Tp __cxx_atomic_fetch_add(__cxx_atomic_lock_impl<_Tp>* __a,
+ _Td __delta, memory_order) {
+ __a->__lock();
+ _Tp __old = __a->__a_value;
+ __a->__a_value += __delta;
+ __a->__unlock();
+ return __old;
+}
+
+template <typename _Tp, typename _Td>
+_LIBCPP_INLINE_VISIBILITY
+_Tp* __cxx_atomic_fetch_add(volatile __cxx_atomic_lock_impl<_Tp*>* __a,
+ ptr
diff _t __delta, memory_order) {
+ __a->__lock();
+ _Tp* __old;
+ __cxx_atomic_assign_volatile(__old, __a->__a_value);
+ __cxx_atomic_assign_volatile(__a->__a_value, __old + __delta);
+ __a->__unlock();
+ return __old;
+}
+template <typename _Tp, typename _Td>
+_LIBCPP_INLINE_VISIBILITY
+_Tp* __cxx_atomic_fetch_add(__cxx_atomic_lock_impl<_Tp*>* __a,
+ ptr
diff _t __delta, memory_order) {
+ __a->__lock();
+ _Tp* __old = __a->__a_value;
+ __a->__a_value += __delta;
+ __a->__unlock();
+ return __old;
+}
+
+template <typename _Tp, typename _Td>
+_LIBCPP_INLINE_VISIBILITY
+_Tp __cxx_atomic_fetch_sub(volatile __cxx_atomic_lock_impl<_Tp>* __a,
+ _Td __delta, memory_order) {
+ __a->__lock();
+ _Tp __old;
+ __cxx_atomic_assign_volatile(__old, __a->__a_value);
+ __cxx_atomic_assign_volatile(__a->__a_value, _Tp(__old - __delta));
+ __a->__unlock();
+ return __old;
+}
+template <typename _Tp, typename _Td>
+_LIBCPP_INLINE_VISIBILITY
+_Tp __cxx_atomic_fetch_sub(__cxx_atomic_lock_impl<_Tp>* __a,
+ _Td __delta, memory_order) {
+ __a->__lock();
+ _Tp __old = __a->__a_value;
+ __a->__a_value -= __delta;
+ __a->__unlock();
+ return __old;
+}
+
+template <typename _Tp>
+_LIBCPP_INLINE_VISIBILITY
+_Tp __cxx_atomic_fetch_and(volatile __cxx_atomic_lock_impl<_Tp>* __a,
+ _Tp __pattern, memory_order) {
+ __a->__lock();
+ _Tp __old;
+ __cxx_atomic_assign_volatile(__old, __a->__a_value);
+ __cxx_atomic_assign_volatile(__a->__a_value, _Tp(__old & __pattern));
+ __a->__unlock();
+ return __old;
+}
+template <typename _Tp>
+_LIBCPP_INLINE_VISIBILITY
+_Tp __cxx_atomic_fetch_and(__cxx_atomic_lock_impl<_Tp>* __a,
+ _Tp __pattern, memory_order) {
+ __a->__lock();
+ _Tp __old = __a->__a_value;
+ __a->__a_value &= __pattern;
+ __a->__unlock();
+ return __old;
+}
+
+template <typename _Tp>
+_LIBCPP_INLINE_VISIBILITY
+_Tp __cxx_atomic_fetch_or(volatile __cxx_atomic_lock_impl<_Tp>* __a,
+ _Tp __pattern, memory_order) {
+ __a->__lock();
+ _Tp __old;
+ __cxx_atomic_assign_volatile(__old, __a->__a_value);
+ __cxx_atomic_assign_volatile(__a->__a_value, _Tp(__old | __pattern));
+ __a->__unlock();
+ return __old;
+}
+template <typename _Tp>
+_LIBCPP_INLINE_VISIBILITY
+_Tp __cxx_atomic_fetch_or(__cxx_atomic_lock_impl<_Tp>* __a,
+ _Tp __pattern, memory_order) {
+ __a->__lock();
+ _Tp __old = __a->__a_value;
+ __a->__a_value |= __pattern;
+ __a->__unlock();
+ return __old;
+}
+
+template <typename _Tp>
+_LIBCPP_INLINE_VISIBILITY
+_Tp __cxx_atomic_fetch_xor(volatile __cxx_atomic_lock_impl<_Tp>* __a,
+ _Tp __pattern, memory_order) {
+ __a->__lock();
+ _Tp __old;
+ __cxx_atomic_assign_volatile(__old, __a->__a_value);
+ __cxx_atomic_assign_volatile(__a->__a_value, _Tp(__old ^ __pattern));
+ __a->__unlock();
+ return __old;
+}
+template <typename _Tp>
+_LIBCPP_INLINE_VISIBILITY
+_Tp __cxx_atomic_fetch_xor(__cxx_atomic_lock_impl<_Tp>* __a,
+ _Tp __pattern, memory_order) {
+ __a->__lock();
+ _Tp __old = __a->__a_value;
+ __a->__a_value ^= __pattern;
+ __a->__unlock();
+ return __old;
+}
+
+template <typename _Tp,
+ typename _Base = typename conditional<__libcpp_is_always_lock_free<_Tp>::__value,
+ __cxx_atomic_base_impl<_Tp>,
+ __cxx_atomic_lock_impl<_Tp> >::type>
+#else
+template <typename _Tp,
+ typename _Base = __cxx_atomic_base_impl<_Tp> >
+#endif //_LIBCPP_ATOMIC_ONLY_USE_BUILTINS
+struct __cxx_atomic_impl : public _Base {
+ static_assert(is_trivially_copyable<_Tp>::value,
+ "std::atomic<T> requires that 'T' be a trivially copyable type");
+
+ _LIBCPP_INLINE_VISIBILITY __cxx_atomic_impl() _NOEXCEPT = default;
+ _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR explicit __cxx_atomic_impl(_Tp __value) _NOEXCEPT
+ : _Base(__value) {}
+};
+
+_LIBCPP_END_NAMESPACE_STD
+
+#endif // _LIBCPP___ATOMIC_CXX_ATOMIC_IMPL_H
diff --git a/libcxx/include/__atomic/fence.h b/libcxx/include/__atomic/fence.h
new file mode 100644
index 0000000000000..0ad2ae384a8d3
--- /dev/null
+++ b/libcxx/include/__atomic/fence.h
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef _LIBCPP___ATOMIC_FENCE_H
+#define _LIBCPP___ATOMIC_FENCE_H
+
+#include <__atomic/cxx_atomic_impl.h>
+#include <__atomic/memory_order.h>
+#include <__config>
+
+#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
+# pragma GCC system_header
+#endif
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+inline _LIBCPP_INLINE_VISIBILITY
+void
+atomic_thread_fence(memory_order __m) _NOEXCEPT
+{
+ __cxx_atomic_thread_fence(__m);
+}
+
+inline _LIBCPP_INLINE_VISIBILITY
+void
+atomic_signal_fence(memory_order __m) _NOEXCEPT
+{
+ __cxx_atomic_signal_fence(__m);
+}
+
+_LIBCPP_END_NAMESPACE_STD
+
+#endif // _LIBCPP___ATOMIC_FENCE_H
diff --git a/libcxx/include/__atomic/is_always_lock_free.h b/libcxx/include/__atomic/is_always_lock_free.h
new file mode 100644
index 0000000000000..fbbd437074990
--- /dev/null
+++ b/libcxx/include/__atomic/is_always_lock_free.h
@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef _LIBCPP___ATOMIC_IS_ALWAYS_LOCK_FREE_H
+#define _LIBCPP___ATOMIC_IS_ALWAYS_LOCK_FREE_H
+
+#include <__config>
+
+#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
+# pragma GCC system_header
+#endif
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+template <class _Tp>
+struct __libcpp_is_always_lock_free {
+ // __atomic_always_lock_free is available in all Standard modes
+ static const bool __value = __atomic_always_lock_free(sizeof(_Tp), 0);
+};
+
+_LIBCPP_END_NAMESPACE_STD
+
+#endif // _LIBCPP___ATOMIC_IS_ALWAYS_LOCK_FREE_H
diff --git a/libcxx/include/__atomic/kill_dependency.h b/libcxx/include/__atomic/kill_dependency.h
new file mode 100644
index 0000000000000..a56bc7ff2c59d
--- /dev/null
+++ b/libcxx/include/__atomic/kill_dependency.h
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef _LIBCPP___ATOMIC_KILL_DEPENDENCY_H
+#define _LIBCPP___ATOMIC_KILL_DEPENDENCY_H
+
+#include <__config>
+
+#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
+# pragma GCC system_header
+#endif
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+template <class _Tp>
+_LIBCPP_INLINE_VISIBILITY
+_Tp kill_dependency(_Tp __y) _NOEXCEPT
+{
+ return __y;
+}
+
+_LIBCPP_END_NAMESPACE_STD
+
+#endif // _LIBCPP___ATOMIC_KILL_DEPENDENCY_H
diff --git a/libcxx/include/__atomic/memory_order.h b/libcxx/include/__atomic/memory_order.h
new file mode 100644
index 0000000000000..d90e231e79ce7
--- /dev/null
+++ b/libcxx/include/__atomic/memory_order.h
@@ -0,0 +1,72 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef _LIBCPP___ATOMIC_MEMORY_ORDER_H
+#define _LIBCPP___ATOMIC_MEMORY_ORDER_H
+
+#include <__config>
+#include <__type_traits/is_same.h>
+#include <__type_traits/underlying_type.h>
+
+#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
+# pragma GCC system_header
+#endif
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+// Figure out what the underlying type for `memory_order` would be if it were
+// declared as an unscoped enum (accounting for -fshort-enums). Use this result
+// to pin the underlying type in C++20.
+enum __legacy_memory_order {
+ __mo_relaxed,
+ __mo_consume,
+ __mo_acquire,
+ __mo_release,
+ __mo_acq_rel,
+ __mo_seq_cst
+};
+
+typedef underlying_type<__legacy_memory_order>::type __memory_order_underlying_t;
+
+#if _LIBCPP_STD_VER >= 20
+
+enum class memory_order : __memory_order_underlying_t {
+ relaxed = __mo_relaxed,
+ consume = __mo_consume,
+ acquire = __mo_acquire,
+ release = __mo_release,
+ acq_rel = __mo_acq_rel,
+ seq_cst = __mo_seq_cst
+};
+
+static_assert((is_same<underlying_type<memory_order>::type, __memory_order_underlying_t>::value),
+ "unexpected underlying type for std::memory_order");
+
+inline constexpr auto memory_order_relaxed = memory_order::relaxed;
+inline constexpr auto memory_order_consume = memory_order::consume;
+inline constexpr auto memory_order_acquire = memory_order::acquire;
+inline constexpr auto memory_order_release = memory_order::release;
+inline constexpr auto memory_order_acq_rel = memory_order::acq_rel;
+inline constexpr auto memory_order_seq_cst = memory_order::seq_cst;
+
+#else
+
+typedef enum memory_order {
+ memory_order_relaxed = __mo_relaxed,
+ memory_order_consume = __mo_consume,
+ memory_order_acquire = __mo_acquire,
+ memory_order_release = __mo_release,
+ memory_order_acq_rel = __mo_acq_rel,
+ memory_order_seq_cst = __mo_seq_cst,
+} memory_order;
+
+#endif // _LIBCPP_STD_VER >= 20
+
+_LIBCPP_END_NAMESPACE_STD
+
+#endif // _LIBCPP___ATOMIC_MEMORY_ORDER_H
diff --git a/libcxx/include/atomic b/libcxx/include/atomic
index 891f1082a0d8e..3ebb2a93298b6 100644
--- a/libcxx/include/atomic
+++ b/libcxx/include/atomic
@@ -519,21 +519,21 @@ template <class T>
*/
#include <__assert> // all public C++ headers provide the assertion handler
-#include <__availability>
-#include <__chrono/duration.h>
+#include <__atomic/aliases.h>
+#include <__atomic/atomic.h>
+#include <__atomic/atomic_base.h>
+#include <__atomic/atomic_flag.h>
+#include <__atomic/atomic_init.h>
+#include <__atomic/atomic_lock_free.h>
+#include <__atomic/atomic_sync.h>
+#include <__atomic/check_memory_order.h>
+#include <__atomic/contention_t.h>
+#include <__atomic/cxx_atomic_impl.h>
+#include <__atomic/fence.h>
+#include <__atomic/is_always_lock_free.h>
+#include <__atomic/kill_dependency.h>
+#include <__atomic/memory_order.h>
#include <__config>
-#include <__thread/poll_with_backoff.h>
-#include <__thread/timed_backoff_policy.h>
-#include <__type_traits/conditional.h>
-#include <__type_traits/decay.h>
-#include <__type_traits/is_assignable.h>
-#include <__type_traits/is_function.h>
-#include <__type_traits/is_nothrow_default_constructible.h>
-#include <__type_traits/is_same.h>
-#include <__type_traits/is_trivially_copyable.h>
-#include <__type_traits/remove_const.h>
-#include <__type_traits/remove_pointer.h>
-#include <__type_traits/underlying_type.h>
#include <cstddef>
#include <cstdint>
#include <cstring>
@@ -554,2116 +554,6 @@ template <class T>
# error <atomic> is incompatible with <stdatomic.h> before C++23. Please compile with -std=c++23.
#endif
-#define _LIBCPP_CHECK_STORE_MEMORY_ORDER(__m) \
- _LIBCPP_DIAGNOSE_WARNING(__m == memory_order_consume || \
- __m == memory_order_acquire || \
- __m == memory_order_acq_rel, \
- "memory order argument to atomic operation is invalid")
-
-#define _LIBCPP_CHECK_LOAD_MEMORY_ORDER(__m) \
- _LIBCPP_DIAGNOSE_WARNING(__m == memory_order_release || \
- __m == memory_order_acq_rel, \
- "memory order argument to atomic operation is invalid")
-
-#define _LIBCPP_CHECK_EXCHANGE_MEMORY_ORDER(__m, __f) \
- _LIBCPP_DIAGNOSE_WARNING(__f == memory_order_release || \
- __f == memory_order_acq_rel, \
- "memory order argument to atomic operation is invalid")
-
-_LIBCPP_BEGIN_NAMESPACE_STD
-
-// Figure out what the underlying type for `memory_order` would be if it were
-// declared as an unscoped enum (accounting for -fshort-enums). Use this result
-// to pin the underlying type in C++20.
-enum __legacy_memory_order {
- __mo_relaxed,
- __mo_consume,
- __mo_acquire,
- __mo_release,
- __mo_acq_rel,
- __mo_seq_cst
-};
-
-typedef underlying_type<__legacy_memory_order>::type __memory_order_underlying_t;
-
-#if _LIBCPP_STD_VER >= 20
-
-enum class memory_order : __memory_order_underlying_t {
- relaxed = __mo_relaxed,
- consume = __mo_consume,
- acquire = __mo_acquire,
- release = __mo_release,
- acq_rel = __mo_acq_rel,
- seq_cst = __mo_seq_cst
-};
-
-inline constexpr auto memory_order_relaxed = memory_order::relaxed;
-inline constexpr auto memory_order_consume = memory_order::consume;
-inline constexpr auto memory_order_acquire = memory_order::acquire;
-inline constexpr auto memory_order_release = memory_order::release;
-inline constexpr auto memory_order_acq_rel = memory_order::acq_rel;
-inline constexpr auto memory_order_seq_cst = memory_order::seq_cst;
-
-#else
-
-typedef enum memory_order {
- memory_order_relaxed = __mo_relaxed,
- memory_order_consume = __mo_consume,
- memory_order_acquire = __mo_acquire,
- memory_order_release = __mo_release,
- memory_order_acq_rel = __mo_acq_rel,
- memory_order_seq_cst = __mo_seq_cst,
-} memory_order;
-
-#endif // _LIBCPP_STD_VER >= 20
-
-template <typename _Tp> _LIBCPP_INLINE_VISIBILITY
-bool __cxx_nonatomic_compare_equal(_Tp const& __lhs, _Tp const& __rhs) {
- return _VSTD::memcmp(&__lhs, &__rhs, sizeof(_Tp)) == 0;
-}
-
-static_assert((is_same<underlying_type<memory_order>::type, __memory_order_underlying_t>::value),
- "unexpected underlying type for std::memory_order");
-
-#if defined(_LIBCPP_HAS_GCC_ATOMIC_IMP) || \
- defined(_LIBCPP_ATOMIC_ONLY_USE_BUILTINS)
-
-// [atomics.types.generic]p1 guarantees _Tp is trivially copyable. Because
-// the default operator= in an object is not volatile, a byte-by-byte copy
-// is required.
-template <typename _Tp, typename _Tv> _LIBCPP_INLINE_VISIBILITY
-typename enable_if<is_assignable<_Tp&, _Tv>::value>::type
-__cxx_atomic_assign_volatile(_Tp& __a_value, _Tv const& __val) {
- __a_value = __val;
-}
-template <typename _Tp, typename _Tv> _LIBCPP_INLINE_VISIBILITY
-typename enable_if<is_assignable<_Tp&, _Tv>::value>::type
-__cxx_atomic_assign_volatile(_Tp volatile& __a_value, _Tv volatile const& __val) {
- volatile char* __to = reinterpret_cast<volatile char*>(&__a_value);
- volatile char* __end = __to + sizeof(_Tp);
- volatile const char* __from = reinterpret_cast<volatile const char*>(&__val);
- while (__to != __end)
- *__to++ = *__from++;
-}
-
-#endif
-
-#if defined(_LIBCPP_HAS_GCC_ATOMIC_IMP)
-
-template <typename _Tp>
-struct __cxx_atomic_base_impl {
-
- _LIBCPP_INLINE_VISIBILITY
-#ifndef _LIBCPP_CXX03_LANG
- __cxx_atomic_base_impl() _NOEXCEPT = default;
-#else
- __cxx_atomic_base_impl() _NOEXCEPT : __a_value() {}
-#endif // _LIBCPP_CXX03_LANG
- _LIBCPP_CONSTEXPR explicit __cxx_atomic_base_impl(_Tp value) _NOEXCEPT
- : __a_value(value) {}
- _Tp __a_value;
-};
-
-_LIBCPP_INLINE_VISIBILITY inline _LIBCPP_CONSTEXPR int __to_gcc_order(memory_order __order) {
- // Avoid switch statement to make this a constexpr.
- return __order == memory_order_relaxed ? __ATOMIC_RELAXED:
- (__order == memory_order_acquire ? __ATOMIC_ACQUIRE:
- (__order == memory_order_release ? __ATOMIC_RELEASE:
- (__order == memory_order_seq_cst ? __ATOMIC_SEQ_CST:
- (__order == memory_order_acq_rel ? __ATOMIC_ACQ_REL:
- __ATOMIC_CONSUME))));
-}
-
-_LIBCPP_INLINE_VISIBILITY inline _LIBCPP_CONSTEXPR int __to_gcc_failure_order(memory_order __order) {
- // Avoid switch statement to make this a constexpr.
- return __order == memory_order_relaxed ? __ATOMIC_RELAXED:
- (__order == memory_order_acquire ? __ATOMIC_ACQUIRE:
- (__order == memory_order_release ? __ATOMIC_RELAXED:
- (__order == memory_order_seq_cst ? __ATOMIC_SEQ_CST:
- (__order == memory_order_acq_rel ? __ATOMIC_ACQUIRE:
- __ATOMIC_CONSUME))));
-}
-
-template <typename _Tp>
-_LIBCPP_INLINE_VISIBILITY
-void __cxx_atomic_init(volatile __cxx_atomic_base_impl<_Tp>* __a, _Tp __val) {
- __cxx_atomic_assign_volatile(__a->__a_value, __val);
-}
-
-template <typename _Tp>
-_LIBCPP_INLINE_VISIBILITY
-void __cxx_atomic_init(__cxx_atomic_base_impl<_Tp>* __a, _Tp __val) {
- __a->__a_value = __val;
-}
-
-_LIBCPP_INLINE_VISIBILITY inline
-void __cxx_atomic_thread_fence(memory_order __order) {
- __atomic_thread_fence(__to_gcc_order(__order));
-}
-
-_LIBCPP_INLINE_VISIBILITY inline
-void __cxx_atomic_signal_fence(memory_order __order) {
- __atomic_signal_fence(__to_gcc_order(__order));
-}
-
-template <typename _Tp>
-_LIBCPP_INLINE_VISIBILITY
-void __cxx_atomic_store(volatile __cxx_atomic_base_impl<_Tp>* __a, _Tp __val,
- memory_order __order) {
- __atomic_store(&__a->__a_value, &__val,
- __to_gcc_order(__order));
-}
-
-template <typename _Tp>
-_LIBCPP_INLINE_VISIBILITY
-void __cxx_atomic_store(__cxx_atomic_base_impl<_Tp>* __a, _Tp __val,
- memory_order __order) {
- __atomic_store(&__a->__a_value, &__val,
- __to_gcc_order(__order));
-}
-
-template <typename _Tp>
-_LIBCPP_INLINE_VISIBILITY
-_Tp __cxx_atomic_load(const volatile __cxx_atomic_base_impl<_Tp>* __a,
- memory_order __order) {
- _Tp __ret;
- __atomic_load(&__a->__a_value, &__ret,
- __to_gcc_order(__order));
- return __ret;
-}
-
-template <typename _Tp>
-_LIBCPP_INLINE_VISIBILITY
-_Tp __cxx_atomic_load(const __cxx_atomic_base_impl<_Tp>* __a, memory_order __order) {
- _Tp __ret;
- __atomic_load(&__a->__a_value, &__ret,
- __to_gcc_order(__order));
- return __ret;
-}
-
-template <typename _Tp>
-_LIBCPP_INLINE_VISIBILITY
-_Tp __cxx_atomic_exchange(volatile __cxx_atomic_base_impl<_Tp>* __a,
- _Tp __value, memory_order __order) {
- _Tp __ret;
- __atomic_exchange(&__a->__a_value, &__value, &__ret,
- __to_gcc_order(__order));
- return __ret;
-}
-
-template <typename _Tp>
-_LIBCPP_INLINE_VISIBILITY
-_Tp __cxx_atomic_exchange(__cxx_atomic_base_impl<_Tp>* __a, _Tp __value,
- memory_order __order) {
- _Tp __ret;
- __atomic_exchange(&__a->__a_value, &__value, &__ret,
- __to_gcc_order(__order));
- return __ret;
-}
-
-template <typename _Tp>
-_LIBCPP_INLINE_VISIBILITY
-bool __cxx_atomic_compare_exchange_strong(
- volatile __cxx_atomic_base_impl<_Tp>* __a, _Tp* __expected, _Tp __value,
- memory_order __success, memory_order __failure) {
- return __atomic_compare_exchange(&__a->__a_value, __expected, &__value,
- false,
- __to_gcc_order(__success),
- __to_gcc_failure_order(__failure));
-}
-
-template <typename _Tp>
-_LIBCPP_INLINE_VISIBILITY
-bool __cxx_atomic_compare_exchange_strong(
- __cxx_atomic_base_impl<_Tp>* __a, _Tp* __expected, _Tp __value, memory_order __success,
- memory_order __failure) {
- return __atomic_compare_exchange(&__a->__a_value, __expected, &__value,
- false,
- __to_gcc_order(__success),
- __to_gcc_failure_order(__failure));
-}
-
-template <typename _Tp>
-_LIBCPP_INLINE_VISIBILITY
-bool __cxx_atomic_compare_exchange_weak(
- volatile __cxx_atomic_base_impl<_Tp>* __a, _Tp* __expected, _Tp __value,
- memory_order __success, memory_order __failure) {
- return __atomic_compare_exchange(&__a->__a_value, __expected, &__value,
- true,
- __to_gcc_order(__success),
- __to_gcc_failure_order(__failure));
-}
-
-template <typename _Tp>
-_LIBCPP_INLINE_VISIBILITY
-bool __cxx_atomic_compare_exchange_weak(
- __cxx_atomic_base_impl<_Tp>* __a, _Tp* __expected, _Tp __value, memory_order __success,
- memory_order __failure) {
- return __atomic_compare_exchange(&__a->__a_value, __expected, &__value,
- true,
- __to_gcc_order(__success),
- __to_gcc_failure_order(__failure));
-}
-
-template <typename _Tp>
-struct __skip_amt { enum {value = 1}; };
-
-template <typename _Tp>
-struct __skip_amt<_Tp*> { enum {value = sizeof(_Tp)}; };
-
-// FIXME: Haven't figured out what the spec says about using arrays with
-// atomic_fetch_add. Force a failure rather than creating bad behavior.
-template <typename _Tp>
-struct __skip_amt<_Tp[]> { };
-template <typename _Tp, int n>
-struct __skip_amt<_Tp[n]> { };
-
-template <typename _Tp, typename _Td>
-_LIBCPP_INLINE_VISIBILITY
-_Tp __cxx_atomic_fetch_add(volatile __cxx_atomic_base_impl<_Tp>* __a,
- _Td __delta, memory_order __order) {
- return __atomic_fetch_add(&__a->__a_value, __delta * __skip_amt<_Tp>::value,
- __to_gcc_order(__order));
-}
-
-template <typename _Tp, typename _Td>
-_LIBCPP_INLINE_VISIBILITY
-_Tp __cxx_atomic_fetch_add(__cxx_atomic_base_impl<_Tp>* __a, _Td __delta,
- memory_order __order) {
- return __atomic_fetch_add(&__a->__a_value, __delta * __skip_amt<_Tp>::value,
- __to_gcc_order(__order));
-}
-
-template <typename _Tp, typename _Td>
-_LIBCPP_INLINE_VISIBILITY
-_Tp __cxx_atomic_fetch_sub(volatile __cxx_atomic_base_impl<_Tp>* __a,
- _Td __delta, memory_order __order) {
- return __atomic_fetch_sub(&__a->__a_value, __delta * __skip_amt<_Tp>::value,
- __to_gcc_order(__order));
-}
-
-template <typename _Tp, typename _Td>
-_LIBCPP_INLINE_VISIBILITY
-_Tp __cxx_atomic_fetch_sub(__cxx_atomic_base_impl<_Tp>* __a, _Td __delta,
- memory_order __order) {
- return __atomic_fetch_sub(&__a->__a_value, __delta * __skip_amt<_Tp>::value,
- __to_gcc_order(__order));
-}
-
-template <typename _Tp>
-_LIBCPP_INLINE_VISIBILITY
-_Tp __cxx_atomic_fetch_and(volatile __cxx_atomic_base_impl<_Tp>* __a,
- _Tp __pattern, memory_order __order) {
- return __atomic_fetch_and(&__a->__a_value, __pattern,
- __to_gcc_order(__order));
-}
-
-template <typename _Tp>
-_LIBCPP_INLINE_VISIBILITY
-_Tp __cxx_atomic_fetch_and(__cxx_atomic_base_impl<_Tp>* __a,
- _Tp __pattern, memory_order __order) {
- return __atomic_fetch_and(&__a->__a_value, __pattern,
- __to_gcc_order(__order));
-}
-
-template <typename _Tp>
-_LIBCPP_INLINE_VISIBILITY
-_Tp __cxx_atomic_fetch_or(volatile __cxx_atomic_base_impl<_Tp>* __a,
- _Tp __pattern, memory_order __order) {
- return __atomic_fetch_or(&__a->__a_value, __pattern,
- __to_gcc_order(__order));
-}
-
-template <typename _Tp>
-_LIBCPP_INLINE_VISIBILITY
-_Tp __cxx_atomic_fetch_or(__cxx_atomic_base_impl<_Tp>* __a, _Tp __pattern,
- memory_order __order) {
- return __atomic_fetch_or(&__a->__a_value, __pattern,
- __to_gcc_order(__order));
-}
-
-template <typename _Tp>
-_LIBCPP_INLINE_VISIBILITY
-_Tp __cxx_atomic_fetch_xor(volatile __cxx_atomic_base_impl<_Tp>* __a,
- _Tp __pattern, memory_order __order) {
- return __atomic_fetch_xor(&__a->__a_value, __pattern,
- __to_gcc_order(__order));
-}
-
-template <typename _Tp>
-_LIBCPP_INLINE_VISIBILITY
-_Tp __cxx_atomic_fetch_xor(__cxx_atomic_base_impl<_Tp>* __a, _Tp __pattern,
- memory_order __order) {
- return __atomic_fetch_xor(&__a->__a_value, __pattern,
- __to_gcc_order(__order));
-}
-
-#define __cxx_atomic_is_lock_free(__s) __atomic_is_lock_free(__s, 0)
-
-#elif defined(_LIBCPP_HAS_C_ATOMIC_IMP)
-
-template <typename _Tp>
-struct __cxx_atomic_base_impl {
-
- _LIBCPP_INLINE_VISIBILITY
-#ifndef _LIBCPP_CXX03_LANG
- __cxx_atomic_base_impl() _NOEXCEPT = default;
-#else
- __cxx_atomic_base_impl() _NOEXCEPT : __a_value() {}
-#endif // _LIBCPP_CXX03_LANG
- _LIBCPP_CONSTEXPR explicit __cxx_atomic_base_impl(_Tp __value) _NOEXCEPT
- : __a_value(__value) {}
- _LIBCPP_DISABLE_EXTENSION_WARNING _Atomic(_Tp) __a_value;
-};
-
-#define __cxx_atomic_is_lock_free(__s) __c11_atomic_is_lock_free(__s)
-
-_LIBCPP_INLINE_VISIBILITY inline
-void __cxx_atomic_thread_fence(memory_order __order) _NOEXCEPT {
- __c11_atomic_thread_fence(static_cast<__memory_order_underlying_t>(__order));
-}
-
-_LIBCPP_INLINE_VISIBILITY inline
-void __cxx_atomic_signal_fence(memory_order __order) _NOEXCEPT {
- __c11_atomic_signal_fence(static_cast<__memory_order_underlying_t>(__order));
-}
-
-template<class _Tp>
-_LIBCPP_INLINE_VISIBILITY
-void __cxx_atomic_init(__cxx_atomic_base_impl<_Tp> volatile* __a, _Tp __val) _NOEXCEPT {
- __c11_atomic_init(&__a->__a_value, __val);
-}
-template<class _Tp>
-_LIBCPP_INLINE_VISIBILITY
-void __cxx_atomic_init(__cxx_atomic_base_impl<_Tp> * __a, _Tp __val) _NOEXCEPT {
- __c11_atomic_init(&__a->__a_value, __val);
-}
-
-template<class _Tp>
-_LIBCPP_INLINE_VISIBILITY
-void __cxx_atomic_store(__cxx_atomic_base_impl<_Tp> volatile* __a, _Tp __val, memory_order __order) _NOEXCEPT {
- __c11_atomic_store(&__a->__a_value, __val, static_cast<__memory_order_underlying_t>(__order));
-}
-template<class _Tp>
-_LIBCPP_INLINE_VISIBILITY
-void __cxx_atomic_store(__cxx_atomic_base_impl<_Tp> * __a, _Tp __val, memory_order __order) _NOEXCEPT {
- __c11_atomic_store(&__a->__a_value, __val, static_cast<__memory_order_underlying_t>(__order));
-}
-
-template<class _Tp>
-_LIBCPP_INLINE_VISIBILITY
-_Tp __cxx_atomic_load(__cxx_atomic_base_impl<_Tp> const volatile* __a, memory_order __order) _NOEXCEPT {
- using __ptr_type = __remove_const_t<decltype(__a->__a_value)>*;
- return __c11_atomic_load(const_cast<__ptr_type>(&__a->__a_value), static_cast<__memory_order_underlying_t>(__order));
-}
-template<class _Tp>
-_LIBCPP_INLINE_VISIBILITY
-_Tp __cxx_atomic_load(__cxx_atomic_base_impl<_Tp> const* __a, memory_order __order) _NOEXCEPT {
- using __ptr_type = __remove_const_t<decltype(__a->__a_value)>*;
- return __c11_atomic_load(const_cast<__ptr_type>(&__a->__a_value), static_cast<__memory_order_underlying_t>(__order));
-}
-
-template<class _Tp>
-_LIBCPP_INLINE_VISIBILITY
-_Tp __cxx_atomic_exchange(__cxx_atomic_base_impl<_Tp> volatile* __a, _Tp __value, memory_order __order) _NOEXCEPT {
- return __c11_atomic_exchange(&__a->__a_value, __value, static_cast<__memory_order_underlying_t>(__order));
-}
-template<class _Tp>
-_LIBCPP_INLINE_VISIBILITY
-_Tp __cxx_atomic_exchange(__cxx_atomic_base_impl<_Tp> * __a, _Tp __value, memory_order __order) _NOEXCEPT {
- return __c11_atomic_exchange(&__a->__a_value, __value, static_cast<__memory_order_underlying_t>(__order));
-}
-
-_LIBCPP_INLINE_VISIBILITY inline _LIBCPP_CONSTEXPR memory_order __to_failure_order(memory_order __order) {
- // Avoid switch statement to make this a constexpr.
- return __order == memory_order_release ? memory_order_relaxed:
- (__order == memory_order_acq_rel ? memory_order_acquire:
- __order);
-}
-
-template<class _Tp>
-_LIBCPP_INLINE_VISIBILITY
-bool __cxx_atomic_compare_exchange_strong(__cxx_atomic_base_impl<_Tp> volatile* __a, _Tp* __expected, _Tp __value, memory_order __success, memory_order __failure) _NOEXCEPT {
- return __c11_atomic_compare_exchange_strong(&__a->__a_value, __expected, __value, static_cast<__memory_order_underlying_t>(__success), static_cast<__memory_order_underlying_t>(__to_failure_order(__failure)));
-}
-template<class _Tp>
-_LIBCPP_INLINE_VISIBILITY
-bool __cxx_atomic_compare_exchange_strong(__cxx_atomic_base_impl<_Tp> * __a, _Tp* __expected, _Tp __value, memory_order __success, memory_order __failure) _NOEXCEPT {
- return __c11_atomic_compare_exchange_strong(&__a->__a_value, __expected, __value, static_cast<__memory_order_underlying_t>(__success), static_cast<__memory_order_underlying_t>(__to_failure_order(__failure)));
-}
-
-template<class _Tp>
-_LIBCPP_INLINE_VISIBILITY
-bool __cxx_atomic_compare_exchange_weak(__cxx_atomic_base_impl<_Tp> volatile* __a, _Tp* __expected, _Tp __value, memory_order __success, memory_order __failure) _NOEXCEPT {
- return __c11_atomic_compare_exchange_weak(&__a->__a_value, __expected, __value, static_cast<__memory_order_underlying_t>(__success), static_cast<__memory_order_underlying_t>(__to_failure_order(__failure)));
-}
-template<class _Tp>
-_LIBCPP_INLINE_VISIBILITY
-bool __cxx_atomic_compare_exchange_weak(__cxx_atomic_base_impl<_Tp> * __a, _Tp* __expected, _Tp __value, memory_order __success, memory_order __failure) _NOEXCEPT {
- return __c11_atomic_compare_exchange_weak(&__a->__a_value, __expected, __value, static_cast<__memory_order_underlying_t>(__success), static_cast<__memory_order_underlying_t>(__to_failure_order(__failure)));
-}
-
-template<class _Tp>
-_LIBCPP_INLINE_VISIBILITY
-_Tp __cxx_atomic_fetch_add(__cxx_atomic_base_impl<_Tp> volatile* __a, _Tp __delta, memory_order __order) _NOEXCEPT {
- return __c11_atomic_fetch_add(&__a->__a_value, __delta, static_cast<__memory_order_underlying_t>(__order));
-}
-template<class _Tp>
-_LIBCPP_INLINE_VISIBILITY
-_Tp __cxx_atomic_fetch_add(__cxx_atomic_base_impl<_Tp> * __a, _Tp __delta, memory_order __order) _NOEXCEPT {
- return __c11_atomic_fetch_add(&__a->__a_value, __delta, static_cast<__memory_order_underlying_t>(__order));
-}
-
-template<class _Tp>
-_LIBCPP_INLINE_VISIBILITY
-_Tp* __cxx_atomic_fetch_add(__cxx_atomic_base_impl<_Tp*> volatile* __a, ptr
diff _t __delta, memory_order __order) _NOEXCEPT {
- return __c11_atomic_fetch_add(&__a->__a_value, __delta, static_cast<__memory_order_underlying_t>(__order));
-}
-template<class _Tp>
-_LIBCPP_INLINE_VISIBILITY
-_Tp* __cxx_atomic_fetch_add(__cxx_atomic_base_impl<_Tp*> * __a, ptr
diff _t __delta, memory_order __order) _NOEXCEPT {
- return __c11_atomic_fetch_add(&__a->__a_value, __delta, static_cast<__memory_order_underlying_t>(__order));
-}
-
-template<class _Tp>
-_LIBCPP_INLINE_VISIBILITY
-_Tp __cxx_atomic_fetch_sub(__cxx_atomic_base_impl<_Tp> volatile* __a, _Tp __delta, memory_order __order) _NOEXCEPT {
- return __c11_atomic_fetch_sub(&__a->__a_value, __delta, static_cast<__memory_order_underlying_t>(__order));
-}
-template<class _Tp>
-_LIBCPP_INLINE_VISIBILITY
-_Tp __cxx_atomic_fetch_sub(__cxx_atomic_base_impl<_Tp> * __a, _Tp __delta, memory_order __order) _NOEXCEPT {
- return __c11_atomic_fetch_sub(&__a->__a_value, __delta, static_cast<__memory_order_underlying_t>(__order));
-}
-template<class _Tp>
-_LIBCPP_INLINE_VISIBILITY
-_Tp* __cxx_atomic_fetch_sub(__cxx_atomic_base_impl<_Tp*> volatile* __a, ptr
diff _t __delta, memory_order __order) _NOEXCEPT {
- return __c11_atomic_fetch_sub(&__a->__a_value, __delta, static_cast<__memory_order_underlying_t>(__order));
-}
-template<class _Tp>
-_LIBCPP_INLINE_VISIBILITY
-_Tp* __cxx_atomic_fetch_sub(__cxx_atomic_base_impl<_Tp*> * __a, ptr
diff _t __delta, memory_order __order) _NOEXCEPT {
- return __c11_atomic_fetch_sub(&__a->__a_value, __delta, static_cast<__memory_order_underlying_t>(__order));
-}
-
-template<class _Tp>
-_LIBCPP_INLINE_VISIBILITY
-_Tp __cxx_atomic_fetch_and(__cxx_atomic_base_impl<_Tp> volatile* __a, _Tp __pattern, memory_order __order) _NOEXCEPT {
- return __c11_atomic_fetch_and(&__a->__a_value, __pattern, static_cast<__memory_order_underlying_t>(__order));
-}
-template<class _Tp>
-_LIBCPP_INLINE_VISIBILITY
-_Tp __cxx_atomic_fetch_and(__cxx_atomic_base_impl<_Tp> * __a, _Tp __pattern, memory_order __order) _NOEXCEPT {
- return __c11_atomic_fetch_and(&__a->__a_value, __pattern, static_cast<__memory_order_underlying_t>(__order));
-}
-
-template<class _Tp>
-_LIBCPP_INLINE_VISIBILITY
-_Tp __cxx_atomic_fetch_or(__cxx_atomic_base_impl<_Tp> volatile* __a, _Tp __pattern, memory_order __order) _NOEXCEPT {
- return __c11_atomic_fetch_or(&__a->__a_value, __pattern, static_cast<__memory_order_underlying_t>(__order));
-}
-template<class _Tp>
-_LIBCPP_INLINE_VISIBILITY
-_Tp __cxx_atomic_fetch_or(__cxx_atomic_base_impl<_Tp> * __a, _Tp __pattern, memory_order __order) _NOEXCEPT {
- return __c11_atomic_fetch_or(&__a->__a_value, __pattern, static_cast<__memory_order_underlying_t>(__order));
-}
-
-template<class _Tp>
-_LIBCPP_INLINE_VISIBILITY
-_Tp __cxx_atomic_fetch_xor(__cxx_atomic_base_impl<_Tp> volatile* __a, _Tp __pattern, memory_order __order) _NOEXCEPT {
- return __c11_atomic_fetch_xor(&__a->__a_value, __pattern, static_cast<__memory_order_underlying_t>(__order));
-}
-template<class _Tp>
-_LIBCPP_INLINE_VISIBILITY
-_Tp __cxx_atomic_fetch_xor(__cxx_atomic_base_impl<_Tp> * __a, _Tp __pattern, memory_order __order) _NOEXCEPT {
- return __c11_atomic_fetch_xor(&__a->__a_value, __pattern, static_cast<__memory_order_underlying_t>(__order));
-}
-
-#endif // _LIBCPP_HAS_GCC_ATOMIC_IMP, _LIBCPP_HAS_C_ATOMIC_IMP
-
-template <class _Tp>
-_LIBCPP_INLINE_VISIBILITY
-_Tp kill_dependency(_Tp __y) _NOEXCEPT
-{
- return __y;
-}
-
-#if defined(__CLANG_ATOMIC_BOOL_LOCK_FREE)
-# define ATOMIC_BOOL_LOCK_FREE __CLANG_ATOMIC_BOOL_LOCK_FREE
-# define ATOMIC_CHAR_LOCK_FREE __CLANG_ATOMIC_CHAR_LOCK_FREE
-#ifndef _LIBCPP_HAS_NO_CHAR8_T
-# define ATOMIC_CHAR8_T_LOCK_FREE __CLANG_ATOMIC_CHAR8_T_LOCK_FREE
-#endif
-# define ATOMIC_CHAR16_T_LOCK_FREE __CLANG_ATOMIC_CHAR16_T_LOCK_FREE
-# define ATOMIC_CHAR32_T_LOCK_FREE __CLANG_ATOMIC_CHAR32_T_LOCK_FREE
-# define ATOMIC_WCHAR_T_LOCK_FREE __CLANG_ATOMIC_WCHAR_T_LOCK_FREE
-# define ATOMIC_SHORT_LOCK_FREE __CLANG_ATOMIC_SHORT_LOCK_FREE
-# define ATOMIC_INT_LOCK_FREE __CLANG_ATOMIC_INT_LOCK_FREE
-# define ATOMIC_LONG_LOCK_FREE __CLANG_ATOMIC_LONG_LOCK_FREE
-# define ATOMIC_LLONG_LOCK_FREE __CLANG_ATOMIC_LLONG_LOCK_FREE
-# define ATOMIC_POINTER_LOCK_FREE __CLANG_ATOMIC_POINTER_LOCK_FREE
-#elif defined(__GCC_ATOMIC_BOOL_LOCK_FREE)
-# define ATOMIC_BOOL_LOCK_FREE __GCC_ATOMIC_BOOL_LOCK_FREE
-# define ATOMIC_CHAR_LOCK_FREE __GCC_ATOMIC_CHAR_LOCK_FREE
-#ifndef _LIBCPP_HAS_NO_CHAR8_T
-# define ATOMIC_CHAR8_T_LOCK_FREE __GCC_ATOMIC_CHAR8_T_LOCK_FREE
-#endif
-# define ATOMIC_CHAR16_T_LOCK_FREE __GCC_ATOMIC_CHAR16_T_LOCK_FREE
-# define ATOMIC_CHAR32_T_LOCK_FREE __GCC_ATOMIC_CHAR32_T_LOCK_FREE
-# define ATOMIC_WCHAR_T_LOCK_FREE __GCC_ATOMIC_WCHAR_T_LOCK_FREE
-# define ATOMIC_SHORT_LOCK_FREE __GCC_ATOMIC_SHORT_LOCK_FREE
-# define ATOMIC_INT_LOCK_FREE __GCC_ATOMIC_INT_LOCK_FREE
-# define ATOMIC_LONG_LOCK_FREE __GCC_ATOMIC_LONG_LOCK_FREE
-# define ATOMIC_LLONG_LOCK_FREE __GCC_ATOMIC_LLONG_LOCK_FREE
-# define ATOMIC_POINTER_LOCK_FREE __GCC_ATOMIC_POINTER_LOCK_FREE
-#endif
-
-template <class _Tp>
-struct __libcpp_is_always_lock_free {
- // __atomic_always_lock_free is available in all Standard modes
- static const bool __value = __atomic_always_lock_free(sizeof(_Tp), 0);
-};
-
-#ifdef _LIBCPP_ATOMIC_ONLY_USE_BUILTINS
-
-template<typename _Tp>
-struct __cxx_atomic_lock_impl {
-
- _LIBCPP_INLINE_VISIBILITY
- __cxx_atomic_lock_impl() _NOEXCEPT
- : __a_value(), __a_lock(0) {}
- _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR explicit
- __cxx_atomic_lock_impl(_Tp value) _NOEXCEPT
- : __a_value(value), __a_lock(0) {}
-
- _Tp __a_value;
- mutable __cxx_atomic_base_impl<_LIBCPP_ATOMIC_FLAG_TYPE> __a_lock;
-
- _LIBCPP_INLINE_VISIBILITY void __lock() const volatile {
- while(1 == __cxx_atomic_exchange(&__a_lock, _LIBCPP_ATOMIC_FLAG_TYPE(true), memory_order_acquire))
- /*spin*/;
- }
- _LIBCPP_INLINE_VISIBILITY void __lock() const {
- while(1 == __cxx_atomic_exchange(&__a_lock, _LIBCPP_ATOMIC_FLAG_TYPE(true), memory_order_acquire))
- /*spin*/;
- }
- _LIBCPP_INLINE_VISIBILITY void __unlock() const volatile {
- __cxx_atomic_store(&__a_lock, _LIBCPP_ATOMIC_FLAG_TYPE(false), memory_order_release);
- }
- _LIBCPP_INLINE_VISIBILITY void __unlock() const {
- __cxx_atomic_store(&__a_lock, _LIBCPP_ATOMIC_FLAG_TYPE(false), memory_order_release);
- }
- _LIBCPP_INLINE_VISIBILITY _Tp __read() const volatile {
- __lock();
- _Tp __old;
- __cxx_atomic_assign_volatile(__old, __a_value);
- __unlock();
- return __old;
- }
- _LIBCPP_INLINE_VISIBILITY _Tp __read() const {
- __lock();
- _Tp __old = __a_value;
- __unlock();
- return __old;
- }
-};
-
-template <typename _Tp>
-_LIBCPP_INLINE_VISIBILITY
-void __cxx_atomic_init(volatile __cxx_atomic_lock_impl<_Tp>* __a, _Tp __val) {
- __cxx_atomic_assign_volatile(__a->__a_value, __val);
-}
-template <typename _Tp>
-_LIBCPP_INLINE_VISIBILITY
-void __cxx_atomic_init(__cxx_atomic_lock_impl<_Tp>* __a, _Tp __val) {
- __a->__a_value = __val;
-}
-
-template <typename _Tp>
-_LIBCPP_INLINE_VISIBILITY
-void __cxx_atomic_store(volatile __cxx_atomic_lock_impl<_Tp>* __a, _Tp __val, memory_order) {
- __a->__lock();
- __cxx_atomic_assign_volatile(__a->__a_value, __val);
- __a->__unlock();
-}
-template <typename _Tp>
-_LIBCPP_INLINE_VISIBILITY
-void __cxx_atomic_store(__cxx_atomic_lock_impl<_Tp>* __a, _Tp __val, memory_order) {
- __a->__lock();
- __a->__a_value = __val;
- __a->__unlock();
-}
-
-template <typename _Tp>
-_LIBCPP_INLINE_VISIBILITY
-_Tp __cxx_atomic_load(const volatile __cxx_atomic_lock_impl<_Tp>* __a, memory_order) {
- return __a->__read();
-}
-template <typename _Tp>
-_LIBCPP_INLINE_VISIBILITY
-_Tp __cxx_atomic_load(const __cxx_atomic_lock_impl<_Tp>* __a, memory_order) {
- return __a->__read();
-}
-
-template <typename _Tp>
-_LIBCPP_INLINE_VISIBILITY
-_Tp __cxx_atomic_exchange(volatile __cxx_atomic_lock_impl<_Tp>* __a, _Tp __value, memory_order) {
- __a->__lock();
- _Tp __old;
- __cxx_atomic_assign_volatile(__old, __a->__a_value);
- __cxx_atomic_assign_volatile(__a->__a_value, __value);
- __a->__unlock();
- return __old;
-}
-template <typename _Tp>
-_LIBCPP_INLINE_VISIBILITY
-_Tp __cxx_atomic_exchange(__cxx_atomic_lock_impl<_Tp>* __a, _Tp __value, memory_order) {
- __a->__lock();
- _Tp __old = __a->__a_value;
- __a->__a_value = __value;
- __a->__unlock();
- return __old;
-}
-
-template <typename _Tp>
-_LIBCPP_INLINE_VISIBILITY
-bool __cxx_atomic_compare_exchange_strong(volatile __cxx_atomic_lock_impl<_Tp>* __a,
- _Tp* __expected, _Tp __value, memory_order, memory_order) {
- _Tp __temp;
- __a->__lock();
- __cxx_atomic_assign_volatile(__temp, __a->__a_value);
- bool __ret = (_VSTD::memcmp(&__temp, __expected, sizeof(_Tp)) == 0);
- if(__ret)
- __cxx_atomic_assign_volatile(__a->__a_value, __value);
- else
- __cxx_atomic_assign_volatile(*__expected, __a->__a_value);
- __a->__unlock();
- return __ret;
-}
-template <typename _Tp>
-_LIBCPP_INLINE_VISIBILITY
-bool __cxx_atomic_compare_exchange_strong(__cxx_atomic_lock_impl<_Tp>* __a,
- _Tp* __expected, _Tp __value, memory_order, memory_order) {
- __a->__lock();
- bool __ret = (_VSTD::memcmp(&__a->__a_value, __expected, sizeof(_Tp)) == 0);
- if(__ret)
- _VSTD::memcpy(&__a->__a_value, &__value, sizeof(_Tp));
- else
- _VSTD::memcpy(__expected, &__a->__a_value, sizeof(_Tp));
- __a->__unlock();
- return __ret;
-}
-
-template <typename _Tp>
-_LIBCPP_INLINE_VISIBILITY
-bool __cxx_atomic_compare_exchange_weak(volatile __cxx_atomic_lock_impl<_Tp>* __a,
- _Tp* __expected, _Tp __value, memory_order, memory_order) {
- _Tp __temp;
- __a->__lock();
- __cxx_atomic_assign_volatile(__temp, __a->__a_value);
- bool __ret = (_VSTD::memcmp(&__temp, __expected, sizeof(_Tp)) == 0);
- if(__ret)
- __cxx_atomic_assign_volatile(__a->__a_value, __value);
- else
- __cxx_atomic_assign_volatile(*__expected, __a->__a_value);
- __a->__unlock();
- return __ret;
-}
-template <typename _Tp>
-_LIBCPP_INLINE_VISIBILITY
-bool __cxx_atomic_compare_exchange_weak(__cxx_atomic_lock_impl<_Tp>* __a,
- _Tp* __expected, _Tp __value, memory_order, memory_order) {
- __a->__lock();
- bool __ret = (_VSTD::memcmp(&__a->__a_value, __expected, sizeof(_Tp)) == 0);
- if(__ret)
- _VSTD::memcpy(&__a->__a_value, &__value, sizeof(_Tp));
- else
- _VSTD::memcpy(__expected, &__a->__a_value, sizeof(_Tp));
- __a->__unlock();
- return __ret;
-}
-
-template <typename _Tp, typename _Td>
-_LIBCPP_INLINE_VISIBILITY
-_Tp __cxx_atomic_fetch_add(volatile __cxx_atomic_lock_impl<_Tp>* __a,
- _Td __delta, memory_order) {
- __a->__lock();
- _Tp __old;
- __cxx_atomic_assign_volatile(__old, __a->__a_value);
- __cxx_atomic_assign_volatile(__a->__a_value, _Tp(__old + __delta));
- __a->__unlock();
- return __old;
-}
-template <typename _Tp, typename _Td>
-_LIBCPP_INLINE_VISIBILITY
-_Tp __cxx_atomic_fetch_add(__cxx_atomic_lock_impl<_Tp>* __a,
- _Td __delta, memory_order) {
- __a->__lock();
- _Tp __old = __a->__a_value;
- __a->__a_value += __delta;
- __a->__unlock();
- return __old;
-}
-
-template <typename _Tp, typename _Td>
-_LIBCPP_INLINE_VISIBILITY
-_Tp* __cxx_atomic_fetch_add(volatile __cxx_atomic_lock_impl<_Tp*>* __a,
- ptr
diff _t __delta, memory_order) {
- __a->__lock();
- _Tp* __old;
- __cxx_atomic_assign_volatile(__old, __a->__a_value);
- __cxx_atomic_assign_volatile(__a->__a_value, __old + __delta);
- __a->__unlock();
- return __old;
-}
-template <typename _Tp, typename _Td>
-_LIBCPP_INLINE_VISIBILITY
-_Tp* __cxx_atomic_fetch_add(__cxx_atomic_lock_impl<_Tp*>* __a,
- ptr
diff _t __delta, memory_order) {
- __a->__lock();
- _Tp* __old = __a->__a_value;
- __a->__a_value += __delta;
- __a->__unlock();
- return __old;
-}
-
-template <typename _Tp, typename _Td>
-_LIBCPP_INLINE_VISIBILITY
-_Tp __cxx_atomic_fetch_sub(volatile __cxx_atomic_lock_impl<_Tp>* __a,
- _Td __delta, memory_order) {
- __a->__lock();
- _Tp __old;
- __cxx_atomic_assign_volatile(__old, __a->__a_value);
- __cxx_atomic_assign_volatile(__a->__a_value, _Tp(__old - __delta));
- __a->__unlock();
- return __old;
-}
-template <typename _Tp, typename _Td>
-_LIBCPP_INLINE_VISIBILITY
-_Tp __cxx_atomic_fetch_sub(__cxx_atomic_lock_impl<_Tp>* __a,
- _Td __delta, memory_order) {
- __a->__lock();
- _Tp __old = __a->__a_value;
- __a->__a_value -= __delta;
- __a->__unlock();
- return __old;
-}
-
-template <typename _Tp>
-_LIBCPP_INLINE_VISIBILITY
-_Tp __cxx_atomic_fetch_and(volatile __cxx_atomic_lock_impl<_Tp>* __a,
- _Tp __pattern, memory_order) {
- __a->__lock();
- _Tp __old;
- __cxx_atomic_assign_volatile(__old, __a->__a_value);
- __cxx_atomic_assign_volatile(__a->__a_value, _Tp(__old & __pattern));
- __a->__unlock();
- return __old;
-}
-template <typename _Tp>
-_LIBCPP_INLINE_VISIBILITY
-_Tp __cxx_atomic_fetch_and(__cxx_atomic_lock_impl<_Tp>* __a,
- _Tp __pattern, memory_order) {
- __a->__lock();
- _Tp __old = __a->__a_value;
- __a->__a_value &= __pattern;
- __a->__unlock();
- return __old;
-}
-
-template <typename _Tp>
-_LIBCPP_INLINE_VISIBILITY
-_Tp __cxx_atomic_fetch_or(volatile __cxx_atomic_lock_impl<_Tp>* __a,
- _Tp __pattern, memory_order) {
- __a->__lock();
- _Tp __old;
- __cxx_atomic_assign_volatile(__old, __a->__a_value);
- __cxx_atomic_assign_volatile(__a->__a_value, _Tp(__old | __pattern));
- __a->__unlock();
- return __old;
-}
-template <typename _Tp>
-_LIBCPP_INLINE_VISIBILITY
-_Tp __cxx_atomic_fetch_or(__cxx_atomic_lock_impl<_Tp>* __a,
- _Tp __pattern, memory_order) {
- __a->__lock();
- _Tp __old = __a->__a_value;
- __a->__a_value |= __pattern;
- __a->__unlock();
- return __old;
-}
-
-template <typename _Tp>
-_LIBCPP_INLINE_VISIBILITY
-_Tp __cxx_atomic_fetch_xor(volatile __cxx_atomic_lock_impl<_Tp>* __a,
- _Tp __pattern, memory_order) {
- __a->__lock();
- _Tp __old;
- __cxx_atomic_assign_volatile(__old, __a->__a_value);
- __cxx_atomic_assign_volatile(__a->__a_value, _Tp(__old ^ __pattern));
- __a->__unlock();
- return __old;
-}
-template <typename _Tp>
-_LIBCPP_INLINE_VISIBILITY
-_Tp __cxx_atomic_fetch_xor(__cxx_atomic_lock_impl<_Tp>* __a,
- _Tp __pattern, memory_order) {
- __a->__lock();
- _Tp __old = __a->__a_value;
- __a->__a_value ^= __pattern;
- __a->__unlock();
- return __old;
-}
-
-template <typename _Tp,
- typename _Base = typename conditional<__libcpp_is_always_lock_free<_Tp>::__value,
- __cxx_atomic_base_impl<_Tp>,
- __cxx_atomic_lock_impl<_Tp> >::type>
-#else
-template <typename _Tp,
- typename _Base = __cxx_atomic_base_impl<_Tp> >
-#endif //_LIBCPP_ATOMIC_ONLY_USE_BUILTINS
-struct __cxx_atomic_impl : public _Base {
- static_assert(is_trivially_copyable<_Tp>::value,
- "std::atomic<T> requires that 'T' be a trivially copyable type");
-
- _LIBCPP_INLINE_VISIBILITY __cxx_atomic_impl() _NOEXCEPT = default;
- _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR explicit __cxx_atomic_impl(_Tp __value) _NOEXCEPT
- : _Base(__value) {}
-};
-
-#if defined(__linux__) || (defined(_AIX) && !defined(__64BIT__))
- using __cxx_contention_t = int32_t;
-#else
- using __cxx_contention_t = int64_t;
-#endif // __linux__ || (_AIX && !__64BIT__)
-
-using __cxx_atomic_contention_t = __cxx_atomic_impl<__cxx_contention_t>;
-
-#ifndef _LIBCPP_HAS_NO_THREADS
-
-_LIBCPP_AVAILABILITY_SYNC _LIBCPP_EXPORTED_FROM_ABI void __cxx_atomic_notify_one(void const volatile*);
-_LIBCPP_AVAILABILITY_SYNC _LIBCPP_EXPORTED_FROM_ABI void __cxx_atomic_notify_all(void const volatile*);
-_LIBCPP_AVAILABILITY_SYNC _LIBCPP_EXPORTED_FROM_ABI __cxx_contention_t __libcpp_atomic_monitor(void const volatile*);
-_LIBCPP_AVAILABILITY_SYNC _LIBCPP_EXPORTED_FROM_ABI void __libcpp_atomic_wait(void const volatile*, __cxx_contention_t);
-
-_LIBCPP_AVAILABILITY_SYNC _LIBCPP_EXPORTED_FROM_ABI void __cxx_atomic_notify_one(__cxx_atomic_contention_t const volatile*);
-_LIBCPP_AVAILABILITY_SYNC _LIBCPP_EXPORTED_FROM_ABI void __cxx_atomic_notify_all(__cxx_atomic_contention_t const volatile*);
-_LIBCPP_AVAILABILITY_SYNC _LIBCPP_EXPORTED_FROM_ABI __cxx_contention_t __libcpp_atomic_monitor(__cxx_atomic_contention_t const volatile*);
-_LIBCPP_AVAILABILITY_SYNC _LIBCPP_EXPORTED_FROM_ABI void __libcpp_atomic_wait(__cxx_atomic_contention_t const volatile*, __cxx_contention_t);
-
-template <class _Atp, class _Fn>
-struct __libcpp_atomic_wait_backoff_impl {
- _Atp* __a;
- _Fn __test_fn;
- _LIBCPP_AVAILABILITY_SYNC
- _LIBCPP_INLINE_VISIBILITY bool operator()(chrono::nanoseconds __elapsed) const
- {
- if(__elapsed > chrono::microseconds(64))
- {
- auto const __monitor = std::__libcpp_atomic_monitor(__a);
- if(__test_fn())
- return true;
- std::__libcpp_atomic_wait(__a, __monitor);
- }
- else if(__elapsed > chrono::microseconds(4))
- __libcpp_thread_yield();
- else
- {} // poll
- return false;
- }
-};
-
-template <class _Atp, class _Fn>
-_LIBCPP_AVAILABILITY_SYNC
-_LIBCPP_INLINE_VISIBILITY bool __cxx_atomic_wait(_Atp* __a, _Fn && __test_fn)
-{
- __libcpp_atomic_wait_backoff_impl<_Atp, typename decay<_Fn>::type> __backoff_fn = {__a, __test_fn};
- return std::__libcpp_thread_poll_with_backoff(__test_fn, __backoff_fn);
-}
-
-#else // _LIBCPP_HAS_NO_THREADS
-
-template <class _Tp>
-_LIBCPP_INLINE_VISIBILITY void __cxx_atomic_notify_all(__cxx_atomic_impl<_Tp> const volatile*) { }
-template <class _Tp>
-_LIBCPP_INLINE_VISIBILITY void __cxx_atomic_notify_one(__cxx_atomic_impl<_Tp> const volatile*) { }
-template <class _Atp, class _Fn>
-_LIBCPP_INLINE_VISIBILITY bool __cxx_atomic_wait(_Atp*, _Fn && __test_fn)
-{
- return __libcpp_thread_poll_with_backoff(__test_fn, __spinning_backoff_policy());
-}
-
-#endif // _LIBCPP_HAS_NO_THREADS
-
-template <class _Atp, class _Tp>
-struct __cxx_atomic_wait_test_fn_impl {
- _Atp* __a;
- _Tp __val;
- memory_order __order;
- _LIBCPP_INLINE_VISIBILITY bool operator()() const
- {
- return !std::__cxx_nonatomic_compare_equal(std::__cxx_atomic_load(__a, __order), __val);
- }
-};
-
-template <class _Atp, class _Tp>
-_LIBCPP_AVAILABILITY_SYNC
-_LIBCPP_INLINE_VISIBILITY bool __cxx_atomic_wait(_Atp* __a, _Tp const __val, memory_order __order)
-{
- __cxx_atomic_wait_test_fn_impl<_Atp, _Tp> __test_fn = {__a, __val, __order};
- return std::__cxx_atomic_wait(__a, __test_fn);
-}
-
-// general atomic<T>
-
-template <class _Tp, bool = is_integral<_Tp>::value && !is_same<_Tp, bool>::value>
-struct __atomic_base // false
-{
- mutable __cxx_atomic_impl<_Tp> __a_;
-
-#if defined(__cpp_lib_atomic_is_always_lock_free)
- static _LIBCPP_CONSTEXPR bool is_always_lock_free = __libcpp_is_always_lock_free<__cxx_atomic_impl<_Tp> >::__value;
-#endif
-
- _LIBCPP_INLINE_VISIBILITY
- bool is_lock_free() const volatile _NOEXCEPT
- {return __cxx_atomic_is_lock_free(sizeof(_Tp));}
- _LIBCPP_INLINE_VISIBILITY
- bool is_lock_free() const _NOEXCEPT
- {return static_cast<__atomic_base const volatile*>(this)->is_lock_free();}
- _LIBCPP_INLINE_VISIBILITY
- void store(_Tp __d, memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT
- _LIBCPP_CHECK_STORE_MEMORY_ORDER(__m)
- {std::__cxx_atomic_store(&__a_, __d, __m);}
- _LIBCPP_INLINE_VISIBILITY
- void store(_Tp __d, memory_order __m = memory_order_seq_cst) _NOEXCEPT
- _LIBCPP_CHECK_STORE_MEMORY_ORDER(__m)
- {std::__cxx_atomic_store(&__a_, __d, __m);}
- _LIBCPP_INLINE_VISIBILITY
- _Tp load(memory_order __m = memory_order_seq_cst) const volatile _NOEXCEPT
- _LIBCPP_CHECK_LOAD_MEMORY_ORDER(__m)
- {return std::__cxx_atomic_load(&__a_, __m);}
- _LIBCPP_INLINE_VISIBILITY
- _Tp load(memory_order __m = memory_order_seq_cst) const _NOEXCEPT
- _LIBCPP_CHECK_LOAD_MEMORY_ORDER(__m)
- {return std::__cxx_atomic_load(&__a_, __m);}
- _LIBCPP_INLINE_VISIBILITY
- operator _Tp() const volatile _NOEXCEPT {return load();}
- _LIBCPP_INLINE_VISIBILITY
- operator _Tp() const _NOEXCEPT {return load();}
- _LIBCPP_INLINE_VISIBILITY
- _Tp exchange(_Tp __d, memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT
- {return std::__cxx_atomic_exchange(&__a_, __d, __m);}
- _LIBCPP_INLINE_VISIBILITY
- _Tp exchange(_Tp __d, memory_order __m = memory_order_seq_cst) _NOEXCEPT
- {return std::__cxx_atomic_exchange(&__a_, __d, __m);}
- _LIBCPP_INLINE_VISIBILITY
- bool compare_exchange_weak(_Tp& __e, _Tp __d,
- memory_order __s, memory_order __f) volatile _NOEXCEPT
- _LIBCPP_CHECK_EXCHANGE_MEMORY_ORDER(__s, __f)
- {return std::__cxx_atomic_compare_exchange_weak(&__a_, &__e, __d, __s, __f);}
- _LIBCPP_INLINE_VISIBILITY
- bool compare_exchange_weak(_Tp& __e, _Tp __d,
- memory_order __s, memory_order __f) _NOEXCEPT
- _LIBCPP_CHECK_EXCHANGE_MEMORY_ORDER(__s, __f)
- {return std::__cxx_atomic_compare_exchange_weak(&__a_, &__e, __d, __s, __f);}
- _LIBCPP_INLINE_VISIBILITY
- bool compare_exchange_strong(_Tp& __e, _Tp __d,
- memory_order __s, memory_order __f) volatile _NOEXCEPT
- _LIBCPP_CHECK_EXCHANGE_MEMORY_ORDER(__s, __f)
- {return std::__cxx_atomic_compare_exchange_strong(&__a_, &__e, __d, __s, __f);}
- _LIBCPP_INLINE_VISIBILITY
- bool compare_exchange_strong(_Tp& __e, _Tp __d,
- memory_order __s, memory_order __f) _NOEXCEPT
- _LIBCPP_CHECK_EXCHANGE_MEMORY_ORDER(__s, __f)
- {return std::__cxx_atomic_compare_exchange_strong(&__a_, &__e, __d, __s, __f);}
- _LIBCPP_INLINE_VISIBILITY
- bool compare_exchange_weak(_Tp& __e, _Tp __d,
- memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT
- {return std::__cxx_atomic_compare_exchange_weak(&__a_, &__e, __d, __m, __m);}
- _LIBCPP_INLINE_VISIBILITY
- bool compare_exchange_weak(_Tp& __e, _Tp __d,
- memory_order __m = memory_order_seq_cst) _NOEXCEPT
- {return std::__cxx_atomic_compare_exchange_weak(&__a_, &__e, __d, __m, __m);}
- _LIBCPP_INLINE_VISIBILITY
- bool compare_exchange_strong(_Tp& __e, _Tp __d,
- memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT
- {return std::__cxx_atomic_compare_exchange_strong(&__a_, &__e, __d, __m, __m);}
- _LIBCPP_INLINE_VISIBILITY
- bool compare_exchange_strong(_Tp& __e, _Tp __d,
- memory_order __m = memory_order_seq_cst) _NOEXCEPT
- {return std::__cxx_atomic_compare_exchange_strong(&__a_, &__e, __d, __m, __m);}
-
- _LIBCPP_AVAILABILITY_SYNC _LIBCPP_INLINE_VISIBILITY void wait(_Tp __v, memory_order __m = memory_order_seq_cst) const volatile _NOEXCEPT
- {std::__cxx_atomic_wait(&__a_, __v, __m);}
- _LIBCPP_AVAILABILITY_SYNC _LIBCPP_INLINE_VISIBILITY void wait(_Tp __v, memory_order __m = memory_order_seq_cst) const _NOEXCEPT
- {std::__cxx_atomic_wait(&__a_, __v, __m);}
- _LIBCPP_AVAILABILITY_SYNC _LIBCPP_INLINE_VISIBILITY void notify_one() volatile _NOEXCEPT
- {std::__cxx_atomic_notify_one(&__a_);}
- _LIBCPP_AVAILABILITY_SYNC _LIBCPP_INLINE_VISIBILITY void notify_one() _NOEXCEPT
- {std::__cxx_atomic_notify_one(&__a_);}
- _LIBCPP_AVAILABILITY_SYNC _LIBCPP_INLINE_VISIBILITY void notify_all() volatile _NOEXCEPT
- {std::__cxx_atomic_notify_all(&__a_);}
- _LIBCPP_AVAILABILITY_SYNC _LIBCPP_INLINE_VISIBILITY void notify_all() _NOEXCEPT
- {std::__cxx_atomic_notify_all(&__a_);}
-
-#if _LIBCPP_STD_VER >= 20
- _LIBCPP_INLINE_VISIBILITY constexpr
- __atomic_base() noexcept(is_nothrow_default_constructible_v<_Tp>) : __a_(_Tp()) {}
-#else
- _LIBCPP_INLINE_VISIBILITY
- __atomic_base() _NOEXCEPT = default;
-#endif
-
- _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
- __atomic_base(_Tp __d) _NOEXCEPT : __a_(__d) {}
-
- __atomic_base(const __atomic_base&) = delete;
-};
-
-#if defined(__cpp_lib_atomic_is_always_lock_free)
-template <class _Tp, bool __b>
-_LIBCPP_CONSTEXPR bool __atomic_base<_Tp, __b>::is_always_lock_free;
-#endif
-
-// atomic<Integral>
-
-template <class _Tp>
-struct __atomic_base<_Tp, true>
- : public __atomic_base<_Tp, false>
-{
- typedef __atomic_base<_Tp, false> __base;
-
- _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_SINCE_CXX20
- __atomic_base() _NOEXCEPT = default;
-
- _LIBCPP_INLINE_VISIBILITY
- _LIBCPP_CONSTEXPR __atomic_base(_Tp __d) _NOEXCEPT : __base(__d) {}
-
- _LIBCPP_INLINE_VISIBILITY
- _Tp fetch_add(_Tp __op, memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT
- {return std::__cxx_atomic_fetch_add(&this->__a_, __op, __m);}
- _LIBCPP_INLINE_VISIBILITY
- _Tp fetch_add(_Tp __op, memory_order __m = memory_order_seq_cst) _NOEXCEPT
- {return std::__cxx_atomic_fetch_add(&this->__a_, __op, __m);}
- _LIBCPP_INLINE_VISIBILITY
- _Tp fetch_sub(_Tp __op, memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT
- {return std::__cxx_atomic_fetch_sub(&this->__a_, __op, __m);}
- _LIBCPP_INLINE_VISIBILITY
- _Tp fetch_sub(_Tp __op, memory_order __m = memory_order_seq_cst) _NOEXCEPT
- {return std::__cxx_atomic_fetch_sub(&this->__a_, __op, __m);}
- _LIBCPP_INLINE_VISIBILITY
- _Tp fetch_and(_Tp __op, memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT
- {return std::__cxx_atomic_fetch_and(&this->__a_, __op, __m);}
- _LIBCPP_INLINE_VISIBILITY
- _Tp fetch_and(_Tp __op, memory_order __m = memory_order_seq_cst) _NOEXCEPT
- {return std::__cxx_atomic_fetch_and(&this->__a_, __op, __m);}
- _LIBCPP_INLINE_VISIBILITY
- _Tp fetch_or(_Tp __op, memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT
- {return std::__cxx_atomic_fetch_or(&this->__a_, __op, __m);}
- _LIBCPP_INLINE_VISIBILITY
- _Tp fetch_or(_Tp __op, memory_order __m = memory_order_seq_cst) _NOEXCEPT
- {return std::__cxx_atomic_fetch_or(&this->__a_, __op, __m);}
- _LIBCPP_INLINE_VISIBILITY
- _Tp fetch_xor(_Tp __op, memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT
- {return std::__cxx_atomic_fetch_xor(&this->__a_, __op, __m);}
- _LIBCPP_INLINE_VISIBILITY
- _Tp fetch_xor(_Tp __op, memory_order __m = memory_order_seq_cst) _NOEXCEPT
- {return std::__cxx_atomic_fetch_xor(&this->__a_, __op, __m);}
-
- _LIBCPP_INLINE_VISIBILITY
- _Tp operator++(int) volatile _NOEXCEPT {return fetch_add(_Tp(1));}
- _LIBCPP_INLINE_VISIBILITY
- _Tp operator++(int) _NOEXCEPT {return fetch_add(_Tp(1));}
- _LIBCPP_INLINE_VISIBILITY
- _Tp operator--(int) volatile _NOEXCEPT {return fetch_sub(_Tp(1));}
- _LIBCPP_INLINE_VISIBILITY
- _Tp operator--(int) _NOEXCEPT {return fetch_sub(_Tp(1));}
- _LIBCPP_INLINE_VISIBILITY
- _Tp operator++() volatile _NOEXCEPT {return fetch_add(_Tp(1)) + _Tp(1);}
- _LIBCPP_INLINE_VISIBILITY
- _Tp operator++() _NOEXCEPT {return fetch_add(_Tp(1)) + _Tp(1);}
- _LIBCPP_INLINE_VISIBILITY
- _Tp operator--() volatile _NOEXCEPT {return fetch_sub(_Tp(1)) - _Tp(1);}
- _LIBCPP_INLINE_VISIBILITY
- _Tp operator--() _NOEXCEPT {return fetch_sub(_Tp(1)) - _Tp(1);}
- _LIBCPP_INLINE_VISIBILITY
- _Tp operator+=(_Tp __op) volatile _NOEXCEPT {return fetch_add(__op) + __op;}
- _LIBCPP_INLINE_VISIBILITY
- _Tp operator+=(_Tp __op) _NOEXCEPT {return fetch_add(__op) + __op;}
- _LIBCPP_INLINE_VISIBILITY
- _Tp operator-=(_Tp __op) volatile _NOEXCEPT {return fetch_sub(__op) - __op;}
- _LIBCPP_INLINE_VISIBILITY
- _Tp operator-=(_Tp __op) _NOEXCEPT {return fetch_sub(__op) - __op;}
- _LIBCPP_INLINE_VISIBILITY
- _Tp operator&=(_Tp __op) volatile _NOEXCEPT {return fetch_and(__op) & __op;}
- _LIBCPP_INLINE_VISIBILITY
- _Tp operator&=(_Tp __op) _NOEXCEPT {return fetch_and(__op) & __op;}
- _LIBCPP_INLINE_VISIBILITY
- _Tp operator|=(_Tp __op) volatile _NOEXCEPT {return fetch_or(__op) | __op;}
- _LIBCPP_INLINE_VISIBILITY
- _Tp operator|=(_Tp __op) _NOEXCEPT {return fetch_or(__op) | __op;}
- _LIBCPP_INLINE_VISIBILITY
- _Tp operator^=(_Tp __op) volatile _NOEXCEPT {return fetch_xor(__op) ^ __op;}
- _LIBCPP_INLINE_VISIBILITY
- _Tp operator^=(_Tp __op) _NOEXCEPT {return fetch_xor(__op) ^ __op;}
-};
-
-// atomic<T>
-
-template <class _Tp>
-struct atomic
- : public __atomic_base<_Tp>
-{
- typedef __atomic_base<_Tp> __base;
- typedef _Tp value_type;
- typedef value_type
diff erence_type;
-
-#if _LIBCPP_STD_VER >= 20
- _LIBCPP_INLINE_VISIBILITY
- atomic() = default;
-#else
- _LIBCPP_INLINE_VISIBILITY
- atomic() _NOEXCEPT = default;
-#endif
-
- _LIBCPP_INLINE_VISIBILITY
- _LIBCPP_CONSTEXPR atomic(_Tp __d) _NOEXCEPT : __base(__d) {}
-
- _LIBCPP_INLINE_VISIBILITY
- _Tp operator=(_Tp __d) volatile _NOEXCEPT
- {__base::store(__d); return __d;}
- _LIBCPP_INLINE_VISIBILITY
- _Tp operator=(_Tp __d) _NOEXCEPT
- {__base::store(__d); return __d;}
-
- atomic& operator=(const atomic&) = delete;
- atomic& operator=(const atomic&) volatile = delete;
-};
-
-// atomic<T*>
-
-template <class _Tp>
-struct atomic<_Tp*>
- : public __atomic_base<_Tp*>
-{
- typedef __atomic_base<_Tp*> __base;
- typedef _Tp* value_type;
- typedef ptr
diff _t
diff erence_type;
-
- _LIBCPP_INLINE_VISIBILITY
- atomic() _NOEXCEPT = default;
-
- _LIBCPP_INLINE_VISIBILITY
- _LIBCPP_CONSTEXPR atomic(_Tp* __d) _NOEXCEPT : __base(__d) {}
-
- _LIBCPP_INLINE_VISIBILITY
- _Tp* operator=(_Tp* __d) volatile _NOEXCEPT
- {__base::store(__d); return __d;}
- _LIBCPP_INLINE_VISIBILITY
- _Tp* operator=(_Tp* __d) _NOEXCEPT
- {__base::store(__d); return __d;}
-
- _LIBCPP_INLINE_VISIBILITY
- _Tp* fetch_add(ptr
diff _t __op, memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT {
- // __atomic_fetch_add accepts function pointers, guard against them.
- static_assert(!is_function<__remove_pointer_t<_Tp> >::value, "Pointer to function isn't allowed");
- return std::__cxx_atomic_fetch_add(&this->__a_, __op, __m);
- }
-
- _LIBCPP_INLINE_VISIBILITY
- _Tp* fetch_add(ptr
diff _t __op, memory_order __m = memory_order_seq_cst) _NOEXCEPT {
- // __atomic_fetch_add accepts function pointers, guard against them.
- static_assert(!is_function<__remove_pointer_t<_Tp> >::value, "Pointer to function isn't allowed");
- return std::__cxx_atomic_fetch_add(&this->__a_, __op, __m);
- }
-
- _LIBCPP_INLINE_VISIBILITY
- _Tp* fetch_sub(ptr
diff _t __op, memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT {
- // __atomic_fetch_add accepts function pointers, guard against them.
- static_assert(!is_function<__remove_pointer_t<_Tp> >::value, "Pointer to function isn't allowed");
- return std::__cxx_atomic_fetch_sub(&this->__a_, __op, __m);
- }
-
- _LIBCPP_INLINE_VISIBILITY
- _Tp* fetch_sub(ptr
diff _t __op, memory_order __m = memory_order_seq_cst) _NOEXCEPT {
- // __atomic_fetch_add accepts function pointers, guard against them.
- static_assert(!is_function<__remove_pointer_t<_Tp> >::value, "Pointer to function isn't allowed");
- return std::__cxx_atomic_fetch_sub(&this->__a_, __op, __m);
- }
-
- _LIBCPP_INLINE_VISIBILITY
- _Tp* operator++(int) volatile _NOEXCEPT {return fetch_add(1);}
- _LIBCPP_INLINE_VISIBILITY
- _Tp* operator++(int) _NOEXCEPT {return fetch_add(1);}
- _LIBCPP_INLINE_VISIBILITY
- _Tp* operator--(int) volatile _NOEXCEPT {return fetch_sub(1);}
- _LIBCPP_INLINE_VISIBILITY
- _Tp* operator--(int) _NOEXCEPT {return fetch_sub(1);}
- _LIBCPP_INLINE_VISIBILITY
- _Tp* operator++() volatile _NOEXCEPT {return fetch_add(1) + 1;}
- _LIBCPP_INLINE_VISIBILITY
- _Tp* operator++() _NOEXCEPT {return fetch_add(1) + 1;}
- _LIBCPP_INLINE_VISIBILITY
- _Tp* operator--() volatile _NOEXCEPT {return fetch_sub(1) - 1;}
- _LIBCPP_INLINE_VISIBILITY
- _Tp* operator--() _NOEXCEPT {return fetch_sub(1) - 1;}
- _LIBCPP_INLINE_VISIBILITY
- _Tp* operator+=(ptr
diff _t __op) volatile _NOEXCEPT {return fetch_add(__op) + __op;}
- _LIBCPP_INLINE_VISIBILITY
- _Tp* operator+=(ptr
diff _t __op) _NOEXCEPT {return fetch_add(__op) + __op;}
- _LIBCPP_INLINE_VISIBILITY
- _Tp* operator-=(ptr
diff _t __op) volatile _NOEXCEPT {return fetch_sub(__op) - __op;}
- _LIBCPP_INLINE_VISIBILITY
- _Tp* operator-=(ptr
diff _t __op) _NOEXCEPT {return fetch_sub(__op) - __op;}
-
- atomic& operator=(const atomic&) = delete;
- atomic& operator=(const atomic&) volatile = delete;
-};
-
-// atomic_is_lock_free
-
-template <class _Tp>
-_LIBCPP_INLINE_VISIBILITY
-bool
-atomic_is_lock_free(const volatile atomic<_Tp>* __o) _NOEXCEPT
-{
- return __o->is_lock_free();
-}
-
-template <class _Tp>
-_LIBCPP_INLINE_VISIBILITY
-bool
-atomic_is_lock_free(const atomic<_Tp>* __o) _NOEXCEPT
-{
- return __o->is_lock_free();
-}
-
-// atomic_init
-
-template <class _Tp>
-_LIBCPP_DEPRECATED_IN_CXX20 _LIBCPP_INLINE_VISIBILITY
-void
-atomic_init(volatile atomic<_Tp>* __o, typename atomic<_Tp>::value_type __d) _NOEXCEPT
-{
- std::__cxx_atomic_init(&__o->__a_, __d);
-}
-
-template <class _Tp>
-_LIBCPP_DEPRECATED_IN_CXX20 _LIBCPP_INLINE_VISIBILITY
-void
-atomic_init(atomic<_Tp>* __o, typename atomic<_Tp>::value_type __d) _NOEXCEPT
-{
- std::__cxx_atomic_init(&__o->__a_, __d);
-}
-
-// atomic_store
-
-template <class _Tp>
-_LIBCPP_INLINE_VISIBILITY
-void
-atomic_store(volatile atomic<_Tp>* __o, typename atomic<_Tp>::value_type __d) _NOEXCEPT
-{
- __o->store(__d);
-}
-
-template <class _Tp>
-_LIBCPP_INLINE_VISIBILITY
-void
-atomic_store(atomic<_Tp>* __o, typename atomic<_Tp>::value_type __d) _NOEXCEPT
-{
- __o->store(__d);
-}
-
-// atomic_store_explicit
-
-template <class _Tp>
-_LIBCPP_INLINE_VISIBILITY
-void
-atomic_store_explicit(volatile atomic<_Tp>* __o, typename atomic<_Tp>::value_type __d, memory_order __m) _NOEXCEPT
- _LIBCPP_CHECK_STORE_MEMORY_ORDER(__m)
-{
- __o->store(__d, __m);
-}
-
-template <class _Tp>
-_LIBCPP_INLINE_VISIBILITY
-void
-atomic_store_explicit(atomic<_Tp>* __o, typename atomic<_Tp>::value_type __d, memory_order __m) _NOEXCEPT
- _LIBCPP_CHECK_STORE_MEMORY_ORDER(__m)
-{
- __o->store(__d, __m);
-}
-
-// atomic_load
-
-template <class _Tp>
-_LIBCPP_INLINE_VISIBILITY
-_Tp
-atomic_load(const volatile atomic<_Tp>* __o) _NOEXCEPT
-{
- return __o->load();
-}
-
-template <class _Tp>
-_LIBCPP_INLINE_VISIBILITY
-_Tp
-atomic_load(const atomic<_Tp>* __o) _NOEXCEPT
-{
- return __o->load();
-}
-
-// atomic_load_explicit
-
-template <class _Tp>
-_LIBCPP_INLINE_VISIBILITY
-_Tp
-atomic_load_explicit(const volatile atomic<_Tp>* __o, memory_order __m) _NOEXCEPT
- _LIBCPP_CHECK_LOAD_MEMORY_ORDER(__m)
-{
- return __o->load(__m);
-}
-
-template <class _Tp>
-_LIBCPP_INLINE_VISIBILITY
-_Tp
-atomic_load_explicit(const atomic<_Tp>* __o, memory_order __m) _NOEXCEPT
- _LIBCPP_CHECK_LOAD_MEMORY_ORDER(__m)
-{
- return __o->load(__m);
-}
-
-// atomic_exchange
-
-template <class _Tp>
-_LIBCPP_INLINE_VISIBILITY
-_Tp
-atomic_exchange(volatile atomic<_Tp>* __o, typename atomic<_Tp>::value_type __d) _NOEXCEPT
-{
- return __o->exchange(__d);
-}
-
-template <class _Tp>
-_LIBCPP_INLINE_VISIBILITY
-_Tp
-atomic_exchange(atomic<_Tp>* __o, typename atomic<_Tp>::value_type __d) _NOEXCEPT
-{
- return __o->exchange(__d);
-}
-
-// atomic_exchange_explicit
-
-template <class _Tp>
-_LIBCPP_INLINE_VISIBILITY
-_Tp
-atomic_exchange_explicit(volatile atomic<_Tp>* __o, typename atomic<_Tp>::value_type __d, memory_order __m) _NOEXCEPT
-{
- return __o->exchange(__d, __m);
-}
-
-template <class _Tp>
-_LIBCPP_INLINE_VISIBILITY
-_Tp
-atomic_exchange_explicit(atomic<_Tp>* __o, typename atomic<_Tp>::value_type __d, memory_order __m) _NOEXCEPT
-{
- return __o->exchange(__d, __m);
-}
-
-// atomic_compare_exchange_weak
-
-template <class _Tp>
-_LIBCPP_INLINE_VISIBILITY
-bool
-atomic_compare_exchange_weak(volatile atomic<_Tp>* __o, typename atomic<_Tp>::value_type* __e, typename atomic<_Tp>::value_type __d) _NOEXCEPT
-{
- return __o->compare_exchange_weak(*__e, __d);
-}
-
-template <class _Tp>
-_LIBCPP_INLINE_VISIBILITY
-bool
-atomic_compare_exchange_weak(atomic<_Tp>* __o, typename atomic<_Tp>::value_type* __e, typename atomic<_Tp>::value_type __d) _NOEXCEPT
-{
- return __o->compare_exchange_weak(*__e, __d);
-}
-
-// atomic_compare_exchange_strong
-
-template <class _Tp>
-_LIBCPP_INLINE_VISIBILITY
-bool
-atomic_compare_exchange_strong(volatile atomic<_Tp>* __o, typename atomic<_Tp>::value_type* __e, typename atomic<_Tp>::value_type __d) _NOEXCEPT
-{
- return __o->compare_exchange_strong(*__e, __d);
-}
-
-template <class _Tp>
-_LIBCPP_INLINE_VISIBILITY
-bool
-atomic_compare_exchange_strong(atomic<_Tp>* __o, typename atomic<_Tp>::value_type* __e, typename atomic<_Tp>::value_type __d) _NOEXCEPT
-{
- return __o->compare_exchange_strong(*__e, __d);
-}
-
-// atomic_compare_exchange_weak_explicit
-
-template <class _Tp>
-_LIBCPP_INLINE_VISIBILITY
-bool
-atomic_compare_exchange_weak_explicit(volatile atomic<_Tp>* __o, typename atomic<_Tp>::value_type* __e,
- typename atomic<_Tp>::value_type __d,
- memory_order __s, memory_order __f) _NOEXCEPT
- _LIBCPP_CHECK_EXCHANGE_MEMORY_ORDER(__s, __f)
-{
- return __o->compare_exchange_weak(*__e, __d, __s, __f);
-}
-
-template <class _Tp>
-_LIBCPP_INLINE_VISIBILITY
-bool
-atomic_compare_exchange_weak_explicit(atomic<_Tp>* __o, typename atomic<_Tp>::value_type* __e, typename atomic<_Tp>::value_type __d,
- memory_order __s, memory_order __f) _NOEXCEPT
- _LIBCPP_CHECK_EXCHANGE_MEMORY_ORDER(__s, __f)
-{
- return __o->compare_exchange_weak(*__e, __d, __s, __f);
-}
-
-// atomic_compare_exchange_strong_explicit
-
-template <class _Tp>
-_LIBCPP_INLINE_VISIBILITY
-bool
-atomic_compare_exchange_strong_explicit(volatile atomic<_Tp>* __o,
- typename atomic<_Tp>::value_type* __e, typename atomic<_Tp>::value_type __d,
- memory_order __s, memory_order __f) _NOEXCEPT
- _LIBCPP_CHECK_EXCHANGE_MEMORY_ORDER(__s, __f)
-{
- return __o->compare_exchange_strong(*__e, __d, __s, __f);
-}
-
-template <class _Tp>
-_LIBCPP_INLINE_VISIBILITY
-bool
-atomic_compare_exchange_strong_explicit(atomic<_Tp>* __o, typename atomic<_Tp>::value_type* __e,
- typename atomic<_Tp>::value_type __d,
- memory_order __s, memory_order __f) _NOEXCEPT
- _LIBCPP_CHECK_EXCHANGE_MEMORY_ORDER(__s, __f)
-{
- return __o->compare_exchange_strong(*__e, __d, __s, __f);
-}
-
-// atomic_wait
-
-template <class _Tp>
-_LIBCPP_AVAILABILITY_SYNC _LIBCPP_INLINE_VISIBILITY
-void atomic_wait(const volatile atomic<_Tp>* __o,
- typename atomic<_Tp>::value_type __v) _NOEXCEPT
-{
- return __o->wait(__v);
-}
-
-template <class _Tp>
-_LIBCPP_AVAILABILITY_SYNC _LIBCPP_INLINE_VISIBILITY
-void atomic_wait(const atomic<_Tp>* __o,
- typename atomic<_Tp>::value_type __v) _NOEXCEPT
-{
- return __o->wait(__v);
-}
-
-// atomic_wait_explicit
-
-template <class _Tp>
-_LIBCPP_AVAILABILITY_SYNC _LIBCPP_INLINE_VISIBILITY
-void atomic_wait_explicit(const volatile atomic<_Tp>* __o,
- typename atomic<_Tp>::value_type __v,
- memory_order __m) _NOEXCEPT
- _LIBCPP_CHECK_LOAD_MEMORY_ORDER(__m)
-{
- return __o->wait(__v, __m);
-}
-
-template <class _Tp>
-_LIBCPP_AVAILABILITY_SYNC _LIBCPP_INLINE_VISIBILITY
-void atomic_wait_explicit(const atomic<_Tp>* __o,
- typename atomic<_Tp>::value_type __v,
- memory_order __m) _NOEXCEPT
- _LIBCPP_CHECK_LOAD_MEMORY_ORDER(__m)
-{
- return __o->wait(__v, __m);
-}
-
-// atomic_notify_one
-
-template <class _Tp>
-_LIBCPP_AVAILABILITY_SYNC _LIBCPP_INLINE_VISIBILITY
-void atomic_notify_one(volatile atomic<_Tp>* __o) _NOEXCEPT
-{
- __o->notify_one();
-}
-template <class _Tp>
-_LIBCPP_AVAILABILITY_SYNC _LIBCPP_INLINE_VISIBILITY
-void atomic_notify_one(atomic<_Tp>* __o) _NOEXCEPT
-{
- __o->notify_one();
-}
-
-// atomic_notify_all
-
-template <class _Tp>
-_LIBCPP_AVAILABILITY_SYNC _LIBCPP_INLINE_VISIBILITY
-void atomic_notify_all(volatile atomic<_Tp>* __o) _NOEXCEPT
-{
- __o->notify_all();
-}
-template <class _Tp>
-_LIBCPP_AVAILABILITY_SYNC _LIBCPP_INLINE_VISIBILITY
-void atomic_notify_all(atomic<_Tp>* __o) _NOEXCEPT
-{
- __o->notify_all();
-}
-
-// atomic_fetch_add
-
-template <class _Tp>
-_LIBCPP_INLINE_VISIBILITY
-_Tp
-atomic_fetch_add(volatile atomic<_Tp>* __o, typename atomic<_Tp>::
diff erence_type __op) _NOEXCEPT
-{
- return __o->fetch_add(__op);
-}
-
-template <class _Tp>
-_LIBCPP_INLINE_VISIBILITY
-_Tp
-atomic_fetch_add(atomic<_Tp>* __o, typename atomic<_Tp>::
diff erence_type __op) _NOEXCEPT
-{
- return __o->fetch_add(__op);
-}
-
-// atomic_fetch_add_explicit
-
-template <class _Tp>
-_LIBCPP_INLINE_VISIBILITY
-_Tp atomic_fetch_add_explicit(volatile atomic<_Tp>* __o, typename atomic<_Tp>::
diff erence_type __op, memory_order __m) _NOEXCEPT
-{
- return __o->fetch_add(__op, __m);
-}
-
-template <class _Tp>
-_LIBCPP_INLINE_VISIBILITY
-_Tp atomic_fetch_add_explicit(atomic<_Tp>* __o, typename atomic<_Tp>::
diff erence_type __op, memory_order __m) _NOEXCEPT
-{
- return __o->fetch_add(__op, __m);
-}
-
-// atomic_fetch_sub
-
-template <class _Tp>
-_LIBCPP_INLINE_VISIBILITY
-_Tp atomic_fetch_sub(volatile atomic<_Tp>* __o, typename atomic<_Tp>::
diff erence_type __op) _NOEXCEPT
-{
- return __o->fetch_sub(__op);
-}
-
-template <class _Tp>
-_LIBCPP_INLINE_VISIBILITY
-_Tp atomic_fetch_sub(atomic<_Tp>* __o, typename atomic<_Tp>::
diff erence_type __op) _NOEXCEPT
-{
- return __o->fetch_sub(__op);
-}
-
-// atomic_fetch_sub_explicit
-
-template <class _Tp>
-_LIBCPP_INLINE_VISIBILITY
-_Tp atomic_fetch_sub_explicit(volatile atomic<_Tp>* __o, typename atomic<_Tp>::
diff erence_type __op, memory_order __m) _NOEXCEPT
-{
- return __o->fetch_sub(__op, __m);
-}
-
-template <class _Tp>
-_LIBCPP_INLINE_VISIBILITY
-_Tp atomic_fetch_sub_explicit(atomic<_Tp>* __o, typename atomic<_Tp>::
diff erence_type __op, memory_order __m) _NOEXCEPT
-{
- return __o->fetch_sub(__op, __m);
-}
-
-// atomic_fetch_and
-
-template <class _Tp>
-_LIBCPP_INLINE_VISIBILITY
-typename enable_if
-<
- is_integral<_Tp>::value && !is_same<_Tp, bool>::value,
- _Tp
->::type
-atomic_fetch_and(volatile atomic<_Tp>* __o, typename atomic<_Tp>::value_type __op) _NOEXCEPT
-{
- return __o->fetch_and(__op);
-}
-
-template <class _Tp>
-_LIBCPP_INLINE_VISIBILITY
-typename enable_if
-<
- is_integral<_Tp>::value && !is_same<_Tp, bool>::value,
- _Tp
->::type
-atomic_fetch_and(atomic<_Tp>* __o, typename atomic<_Tp>::value_type __op) _NOEXCEPT
-{
- return __o->fetch_and(__op);
-}
-
-// atomic_fetch_and_explicit
-
-template <class _Tp>
-_LIBCPP_INLINE_VISIBILITY
-typename enable_if
-<
- is_integral<_Tp>::value && !is_same<_Tp, bool>::value,
- _Tp
->::type
-atomic_fetch_and_explicit(volatile atomic<_Tp>* __o, typename atomic<_Tp>::value_type __op, memory_order __m) _NOEXCEPT
-{
- return __o->fetch_and(__op, __m);
-}
-
-template <class _Tp>
-_LIBCPP_INLINE_VISIBILITY
-typename enable_if
-<
- is_integral<_Tp>::value && !is_same<_Tp, bool>::value,
- _Tp
->::type
-atomic_fetch_and_explicit(atomic<_Tp>* __o, typename atomic<_Tp>::value_type __op, memory_order __m) _NOEXCEPT
-{
- return __o->fetch_and(__op, __m);
-}
-
-// atomic_fetch_or
-
-template <class _Tp>
-_LIBCPP_INLINE_VISIBILITY
-typename enable_if
-<
- is_integral<_Tp>::value && !is_same<_Tp, bool>::value,
- _Tp
->::type
-atomic_fetch_or(volatile atomic<_Tp>* __o, typename atomic<_Tp>::value_type __op) _NOEXCEPT
-{
- return __o->fetch_or(__op);
-}
-
-template <class _Tp>
-_LIBCPP_INLINE_VISIBILITY
-typename enable_if
-<
- is_integral<_Tp>::value && !is_same<_Tp, bool>::value,
- _Tp
->::type
-atomic_fetch_or(atomic<_Tp>* __o, typename atomic<_Tp>::value_type __op) _NOEXCEPT
-{
- return __o->fetch_or(__op);
-}
-
-// atomic_fetch_or_explicit
-
-template <class _Tp>
-_LIBCPP_INLINE_VISIBILITY
-typename enable_if
-<
- is_integral<_Tp>::value && !is_same<_Tp, bool>::value,
- _Tp
->::type
-atomic_fetch_or_explicit(volatile atomic<_Tp>* __o, typename atomic<_Tp>::value_type __op, memory_order __m) _NOEXCEPT
-{
- return __o->fetch_or(__op, __m);
-}
-
-template <class _Tp>
-_LIBCPP_INLINE_VISIBILITY
-typename enable_if
-<
- is_integral<_Tp>::value && !is_same<_Tp, bool>::value,
- _Tp
->::type
-atomic_fetch_or_explicit(atomic<_Tp>* __o, typename atomic<_Tp>::value_type __op, memory_order __m) _NOEXCEPT
-{
- return __o->fetch_or(__op, __m);
-}
-
-// atomic_fetch_xor
-
-template <class _Tp>
-_LIBCPP_INLINE_VISIBILITY
-typename enable_if
-<
- is_integral<_Tp>::value && !is_same<_Tp, bool>::value,
- _Tp
->::type
-atomic_fetch_xor(volatile atomic<_Tp>* __o, typename atomic<_Tp>::value_type __op) _NOEXCEPT
-{
- return __o->fetch_xor(__op);
-}
-
-template <class _Tp>
-_LIBCPP_INLINE_VISIBILITY
-typename enable_if
-<
- is_integral<_Tp>::value && !is_same<_Tp, bool>::value,
- _Tp
->::type
-atomic_fetch_xor(atomic<_Tp>* __o, typename atomic<_Tp>::value_type __op) _NOEXCEPT
-{
- return __o->fetch_xor(__op);
-}
-
-// atomic_fetch_xor_explicit
-
-template <class _Tp>
-_LIBCPP_INLINE_VISIBILITY
-typename enable_if
-<
- is_integral<_Tp>::value && !is_same<_Tp, bool>::value,
- _Tp
->::type
-atomic_fetch_xor_explicit(volatile atomic<_Tp>* __o, typename atomic<_Tp>::value_type __op, memory_order __m) _NOEXCEPT
-{
- return __o->fetch_xor(__op, __m);
-}
-
-template <class _Tp>
-_LIBCPP_INLINE_VISIBILITY
-typename enable_if
-<
- is_integral<_Tp>::value && !is_same<_Tp, bool>::value,
- _Tp
->::type
-atomic_fetch_xor_explicit(atomic<_Tp>* __o, typename atomic<_Tp>::value_type __op, memory_order __m) _NOEXCEPT
-{
- return __o->fetch_xor(__op, __m);
-}
-
-// flag type and operations
-
-typedef struct atomic_flag
-{
- __cxx_atomic_impl<_LIBCPP_ATOMIC_FLAG_TYPE> __a_;
-
- _LIBCPP_INLINE_VISIBILITY
- bool test(memory_order __m = memory_order_seq_cst) const volatile _NOEXCEPT
- {return _LIBCPP_ATOMIC_FLAG_TYPE(true) == __cxx_atomic_load(&__a_, __m);}
- _LIBCPP_INLINE_VISIBILITY
- bool test(memory_order __m = memory_order_seq_cst) const _NOEXCEPT
- {return _LIBCPP_ATOMIC_FLAG_TYPE(true) == __cxx_atomic_load(&__a_, __m);}
-
- _LIBCPP_INLINE_VISIBILITY
- bool test_and_set(memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT
- {return __cxx_atomic_exchange(&__a_, _LIBCPP_ATOMIC_FLAG_TYPE(true), __m);}
- _LIBCPP_INLINE_VISIBILITY
- bool test_and_set(memory_order __m = memory_order_seq_cst) _NOEXCEPT
- {return __cxx_atomic_exchange(&__a_, _LIBCPP_ATOMIC_FLAG_TYPE(true), __m);}
- _LIBCPP_INLINE_VISIBILITY
- void clear(memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT
- {__cxx_atomic_store(&__a_, _LIBCPP_ATOMIC_FLAG_TYPE(false), __m);}
- _LIBCPP_INLINE_VISIBILITY
- void clear(memory_order __m = memory_order_seq_cst) _NOEXCEPT
- {__cxx_atomic_store(&__a_, _LIBCPP_ATOMIC_FLAG_TYPE(false), __m);}
-
- _LIBCPP_AVAILABILITY_SYNC _LIBCPP_INLINE_VISIBILITY
- void wait(bool __v, memory_order __m = memory_order_seq_cst) const volatile _NOEXCEPT
- {__cxx_atomic_wait(&__a_, _LIBCPP_ATOMIC_FLAG_TYPE(__v), __m);}
- _LIBCPP_AVAILABILITY_SYNC _LIBCPP_INLINE_VISIBILITY
- void wait(bool __v, memory_order __m = memory_order_seq_cst) const _NOEXCEPT
- {__cxx_atomic_wait(&__a_, _LIBCPP_ATOMIC_FLAG_TYPE(__v), __m);}
- _LIBCPP_AVAILABILITY_SYNC _LIBCPP_INLINE_VISIBILITY
- void notify_one() volatile _NOEXCEPT
- {__cxx_atomic_notify_one(&__a_);}
- _LIBCPP_AVAILABILITY_SYNC _LIBCPP_INLINE_VISIBILITY
- void notify_one() _NOEXCEPT
- {__cxx_atomic_notify_one(&__a_);}
- _LIBCPP_AVAILABILITY_SYNC _LIBCPP_INLINE_VISIBILITY
- void notify_all() volatile _NOEXCEPT
- {__cxx_atomic_notify_all(&__a_);}
- _LIBCPP_AVAILABILITY_SYNC _LIBCPP_INLINE_VISIBILITY
- void notify_all() _NOEXCEPT
- {__cxx_atomic_notify_all(&__a_);}
-
-#if _LIBCPP_STD_VER >= 20
- _LIBCPP_INLINE_VISIBILITY constexpr
- atomic_flag() _NOEXCEPT : __a_(false) {}
-#else
- _LIBCPP_INLINE_VISIBILITY
- atomic_flag() _NOEXCEPT = default;
-#endif
-
- _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
- atomic_flag(bool __b) _NOEXCEPT : __a_(__b) {} // EXTENSION
-
- atomic_flag(const atomic_flag&) = delete;
- atomic_flag& operator=(const atomic_flag&) = delete;
- atomic_flag& operator=(const atomic_flag&) volatile = delete;
-
-} atomic_flag;
-
-
-inline _LIBCPP_INLINE_VISIBILITY
-bool
-atomic_flag_test(const volatile atomic_flag* __o) _NOEXCEPT
-{
- return __o->test();
-}
-
-inline _LIBCPP_INLINE_VISIBILITY
-bool
-atomic_flag_test(const atomic_flag* __o) _NOEXCEPT
-{
- return __o->test();
-}
-
-inline _LIBCPP_INLINE_VISIBILITY
-bool
-atomic_flag_test_explicit(const volatile atomic_flag* __o, memory_order __m) _NOEXCEPT
-{
- return __o->test(__m);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY
-bool
-atomic_flag_test_explicit(const atomic_flag* __o, memory_order __m) _NOEXCEPT
-{
- return __o->test(__m);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY
-bool
-atomic_flag_test_and_set(volatile atomic_flag* __o) _NOEXCEPT
-{
- return __o->test_and_set();
-}
-
-inline _LIBCPP_INLINE_VISIBILITY
-bool
-atomic_flag_test_and_set(atomic_flag* __o) _NOEXCEPT
-{
- return __o->test_and_set();
-}
-
-inline _LIBCPP_INLINE_VISIBILITY
-bool
-atomic_flag_test_and_set_explicit(volatile atomic_flag* __o, memory_order __m) _NOEXCEPT
-{
- return __o->test_and_set(__m);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY
-bool
-atomic_flag_test_and_set_explicit(atomic_flag* __o, memory_order __m) _NOEXCEPT
-{
- return __o->test_and_set(__m);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY
-void
-atomic_flag_clear(volatile atomic_flag* __o) _NOEXCEPT
-{
- __o->clear();
-}
-
-inline _LIBCPP_INLINE_VISIBILITY
-void
-atomic_flag_clear(atomic_flag* __o) _NOEXCEPT
-{
- __o->clear();
-}
-
-inline _LIBCPP_INLINE_VISIBILITY
-void
-atomic_flag_clear_explicit(volatile atomic_flag* __o, memory_order __m) _NOEXCEPT
-{
- __o->clear(__m);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY
-void
-atomic_flag_clear_explicit(atomic_flag* __o, memory_order __m) _NOEXCEPT
-{
- __o->clear(__m);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_AVAILABILITY_SYNC
-void
-atomic_flag_wait(const volatile atomic_flag* __o, bool __v) _NOEXCEPT
-{
- __o->wait(__v);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_AVAILABILITY_SYNC
-void
-atomic_flag_wait(const atomic_flag* __o, bool __v) _NOEXCEPT
-{
- __o->wait(__v);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_AVAILABILITY_SYNC
-void
-atomic_flag_wait_explicit(const volatile atomic_flag* __o,
- bool __v, memory_order __m) _NOEXCEPT
-{
- __o->wait(__v, __m);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_AVAILABILITY_SYNC
-void
-atomic_flag_wait_explicit(const atomic_flag* __o,
- bool __v, memory_order __m) _NOEXCEPT
-{
- __o->wait(__v, __m);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_AVAILABILITY_SYNC
-void
-atomic_flag_notify_one(volatile atomic_flag* __o) _NOEXCEPT
-{
- __o->notify_one();
-}
-
-inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_AVAILABILITY_SYNC
-void
-atomic_flag_notify_one(atomic_flag* __o) _NOEXCEPT
-{
- __o->notify_one();
-}
-
-inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_AVAILABILITY_SYNC
-void
-atomic_flag_notify_all(volatile atomic_flag* __o) _NOEXCEPT
-{
- __o->notify_all();
-}
-
-inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_AVAILABILITY_SYNC
-void
-atomic_flag_notify_all(atomic_flag* __o) _NOEXCEPT
-{
- __o->notify_all();
-}
-
-// fences
-
-inline _LIBCPP_INLINE_VISIBILITY
-void
-atomic_thread_fence(memory_order __m) _NOEXCEPT
-{
- __cxx_atomic_thread_fence(__m);
-}
-
-inline _LIBCPP_INLINE_VISIBILITY
-void
-atomic_signal_fence(memory_order __m) _NOEXCEPT
-{
- __cxx_atomic_signal_fence(__m);
-}
-
-// Atomics for standard typedef types
-
-typedef atomic<bool> atomic_bool;
-typedef atomic<char> atomic_char;
-typedef atomic<signed char> atomic_schar;
-typedef atomic<unsigned char> atomic_uchar;
-typedef atomic<short> atomic_short;
-typedef atomic<unsigned short> atomic_ushort;
-typedef atomic<int> atomic_int;
-typedef atomic<unsigned int> atomic_uint;
-typedef atomic<long> atomic_long;
-typedef atomic<unsigned long> atomic_ulong;
-typedef atomic<long long> atomic_llong;
-typedef atomic<unsigned long long> atomic_ullong;
-#ifndef _LIBCPP_HAS_NO_CHAR8_T
-typedef atomic<char8_t> atomic_char8_t;
-#endif
-typedef atomic<char16_t> atomic_char16_t;
-typedef atomic<char32_t> atomic_char32_t;
-#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
-typedef atomic<wchar_t> atomic_wchar_t;
-#endif
-
-typedef atomic<int_least8_t> atomic_int_least8_t;
-typedef atomic<uint_least8_t> atomic_uint_least8_t;
-typedef atomic<int_least16_t> atomic_int_least16_t;
-typedef atomic<uint_least16_t> atomic_uint_least16_t;
-typedef atomic<int_least32_t> atomic_int_least32_t;
-typedef atomic<uint_least32_t> atomic_uint_least32_t;
-typedef atomic<int_least64_t> atomic_int_least64_t;
-typedef atomic<uint_least64_t> atomic_uint_least64_t;
-
-typedef atomic<int_fast8_t> atomic_int_fast8_t;
-typedef atomic<uint_fast8_t> atomic_uint_fast8_t;
-typedef atomic<int_fast16_t> atomic_int_fast16_t;
-typedef atomic<uint_fast16_t> atomic_uint_fast16_t;
-typedef atomic<int_fast32_t> atomic_int_fast32_t;
-typedef atomic<uint_fast32_t> atomic_uint_fast32_t;
-typedef atomic<int_fast64_t> atomic_int_fast64_t;
-typedef atomic<uint_fast64_t> atomic_uint_fast64_t;
-
-typedef atomic< int8_t> atomic_int8_t;
-typedef atomic<uint8_t> atomic_uint8_t;
-typedef atomic< int16_t> atomic_int16_t;
-typedef atomic<uint16_t> atomic_uint16_t;
-typedef atomic< int32_t> atomic_int32_t;
-typedef atomic<uint32_t> atomic_uint32_t;
-typedef atomic< int64_t> atomic_int64_t;
-typedef atomic<uint64_t> atomic_uint64_t;
-
-typedef atomic<intptr_t> atomic_intptr_t;
-typedef atomic<uintptr_t> atomic_uintptr_t;
-typedef atomic<size_t> atomic_size_t;
-typedef atomic<ptr
diff _t> atomic_ptr
diff _t;
-typedef atomic<intmax_t> atomic_intmax_t;
-typedef atomic<uintmax_t> atomic_uintmax_t;
-
-// atomic_*_lock_free : prefer the contention type most highly, then the largest lock-free type
-
-#ifdef __cpp_lib_atomic_is_always_lock_free
-# define _LIBCPP_CONTENTION_LOCK_FREE ::std::__libcpp_is_always_lock_free<__cxx_contention_t>::__value
-#else
-# define _LIBCPP_CONTENTION_LOCK_FREE false
-#endif
-
-#if ATOMIC_LLONG_LOCK_FREE == 2
-typedef __conditional_t<_LIBCPP_CONTENTION_LOCK_FREE, __cxx_contention_t, long long> __libcpp_signed_lock_free;
-typedef __conditional_t<_LIBCPP_CONTENTION_LOCK_FREE, __cxx_contention_t, unsigned long long> __libcpp_unsigned_lock_free;
-#elif ATOMIC_INT_LOCK_FREE == 2
-typedef __conditional_t<_LIBCPP_CONTENTION_LOCK_FREE, __cxx_contention_t, int> __libcpp_signed_lock_free;
-typedef __conditional_t<_LIBCPP_CONTENTION_LOCK_FREE, __cxx_contention_t, unsigned int> __libcpp_unsigned_lock_free;
-#elif ATOMIC_SHORT_LOCK_FREE == 2
-typedef __conditional_t<_LIBCPP_CONTENTION_LOCK_FREE, __cxx_contention_t, short> __libcpp_signed_lock_free;
-typedef __conditional_t<_LIBCPP_CONTENTION_LOCK_FREE, __cxx_contention_t, unsigned short> __libcpp_unsigned_lock_free;
-#elif ATOMIC_CHAR_LOCK_FREE == 2
-typedef __conditional_t<_LIBCPP_CONTENTION_LOCK_FREE, __cxx_contention_t, char> __libcpp_signed_lock_free;
-typedef __conditional_t<_LIBCPP_CONTENTION_LOCK_FREE, __cxx_contention_t, unsigned char> __libcpp_unsigned_lock_free;
-#else
- // No signed/unsigned lock-free types
-#define _LIBCPP_NO_LOCK_FREE_TYPES
-#endif
-
-#if !defined(_LIBCPP_NO_LOCK_FREE_TYPES)
-typedef atomic<__libcpp_signed_lock_free> atomic_signed_lock_free;
-typedef atomic<__libcpp_unsigned_lock_free> atomic_unsigned_lock_free;
-#endif
-
-#define ATOMIC_FLAG_INIT {false}
-#define ATOMIC_VAR_INIT(__v) {__v}
-
-#if _LIBCPP_STD_VER >= 20 && !defined(_LIBCPP_DISABLE_DEPRECATION_WARNINGS)
-# if defined(_LIBCPP_CLANG_VER) && _LIBCPP_CLANG_VER >= 1400
-# pragma clang deprecated(ATOMIC_VAR_INIT)
-# endif
-#endif // _LIBCPP_STD_VER >= 20 && !defined(_LIBCPP_DISABLE_DEPRECATION_WARNINGS)
-
-_LIBCPP_END_NAMESPACE_STD
-
#if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20
# include <cmath>
# include <compare>
diff --git a/libcxx/include/libcxx.imp b/libcxx/include/libcxx.imp
index 575ce0f79d474..8e897c9bb66e1 100644
--- a/libcxx/include/libcxx.imp
+++ b/libcxx/include/libcxx.imp
@@ -16,6 +16,7 @@
{ include: [ "<__tree>", "private", "<map>", "public" ] },
{ include: [ "<__tree>", "private", "<set>", "public" ] },
{ include: [ "@<__algorithm/.*>", "private", "<algorithm>", "public" ] },
+ { include: [ "@<__atomic/.*>", "private", "<atomic>", "public" ] },
{ include: [ "@<__bit/.*>", "private", "<bit>", "public" ] },
{ include: [ "@<__charconv/.*>", "private", "<charconv>", "public" ] },
{ include: [ "@<__chrono/.*>", "private", "<chrono>", "public" ] },
diff --git a/libcxx/include/module.modulemap.in b/libcxx/include/module.modulemap.in
index e7627a59eb45c..406e48179b9b3 100644
--- a/libcxx/include/module.modulemap.in
+++ b/libcxx/include/module.modulemap.in
@@ -622,6 +622,23 @@ module std [system] {
module atomic {
header "atomic"
export *
+
+ module __atomic {
+ module aliases { private header "__atomic/aliases.h" }
+ module atomic { private header "__atomic/atomic.h" }
+ module atomic_base { private header "__atomic/atomic_base.h" }
+ module atomic_flag { private header "__atomic/atomic_flag.h" }
+ module atomic_init { private header "__atomic/atomic_init.h" }
+ module atomic_lock_free { private header "__atomic/atomic_lock_free.h" }
+ module atomic_sync { private header "__atomic/atomic_sync.h" }
+ module check_memory_order { private header "__atomic/check_memory_order.h" }
+ module contention_t { private header "__atomic/contention_t.h" }
+ module cxx_atomic_impl { private header "__atomic/cxx_atomic_impl.h" }
+ module fence { private header "__atomic/fence.h" }
+ module is_always_lock_free { private header "__atomic/is_always_lock_free.h" }
+ module kill_dependency { private header "__atomic/kill_dependency.h" }
+ module memory_order { private header "__atomic/memory_order.h" }
+ }
}
module barrier {
@requires_LIBCXX_ENABLE_THREADS@
@@ -1558,7 +1575,11 @@ module std [system] {
module strip_signature { private header "__type_traits/strip_signature.h" }
module type_identity { private header "__type_traits/type_identity.h" }
module type_list { private header "__type_traits/type_list.h" }
- module underlying_type { private header "__type_traits/underlying_type.h" }
+ module underlying_type {
+ private header "__type_traits/underlying_type.h"
+
+ export type_traits
+ }
module void_t { private header "__type_traits/void_t.h" }
}
module typeindex {
diff --git a/libcxx/test/libcxx/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_add.verify.cpp b/libcxx/test/libcxx/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_add.verify.cpp
index ca6f0069a155d..9ba2fc9b9416a 100644
--- a/libcxx/test/libcxx/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_add.verify.cpp
+++ b/libcxx/test/libcxx/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_add.verify.cpp
@@ -18,12 +18,12 @@
void void_pointer() {
{
volatile std::atomic<void*> obj;
- // expected-error at atomic:* {{incomplete type 'void' where a complete type is required}}
+ // expected-error@*:* {{incomplete type 'void' where a complete type is required}}
std::atomic_fetch_add(&obj, 0);
}
{
std::atomic<void*> obj;
- // expected-error at atomic:* {{incomplete type 'void' where a complete type is required}}
+ // expected-error@*:* {{incomplete type 'void' where a complete type is required}}
std::atomic_fetch_add(&obj, 0);
}
}
@@ -33,12 +33,12 @@ struct Incomplete;
void pointer_to_incomplete_type() {
{
volatile std::atomic<Incomplete*> obj;
- // expected-error at atomic:* {{incomplete type 'Incomplete' where a complete type is required}}
+ // expected-error@*:* {{incomplete type 'Incomplete' where a complete type is required}}
std::atomic_fetch_add(&obj, 0);
}
{
std::atomic<Incomplete*> obj;
- // expected-error at atomic:* {{incomplete type 'Incomplete' where a complete type is required}}
+ // expected-error@*:* {{incomplete type 'Incomplete' where a complete type is required}}
std::atomic_fetch_add(&obj, 0);
}
}
@@ -46,12 +46,12 @@ void pointer_to_incomplete_type() {
void function_pointer() {
{
volatile std::atomic<void (*)(int)> fun;
- // expected-error-re at atomic:* {{{{(static_assert|static assertion)}} failed due to requirement '!is_function<void (int)>::value'{{.*}}Pointer to function isn't allowed}}
+ // expected-error-re@*:* {{{{(static_assert|static assertion)}} failed due to requirement '!is_function<void (int)>::value'{{.*}}Pointer to function isn't allowed}}
std::atomic_fetch_add(&fun, 0);
}
{
std::atomic<void (*)(int)> fun;
- // expected-error-re at atomic:* {{{{(static_assert|static assertion)}} failed due to requirement '!is_function<void (int)>::value'{{.*}}Pointer to function isn't allowed}}
+ // expected-error-re@*:* {{{{(static_assert|static assertion)}} failed due to requirement '!is_function<void (int)>::value'{{.*}}Pointer to function isn't allowed}}
std::atomic_fetch_add(&fun, 0);
}
}
@@ -63,12 +63,12 @@ struct S {
void member_function_pointer() {
{
volatile std::atomic<void (S::*)(int)> fun;
- // expected-error at atomic:* {{no member named 'fetch_add' in}}
+ // expected-error@*:* {{no member named 'fetch_add' in}}
std::atomic_fetch_add(&fun, 0);
}
{
std::atomic<void (S::*)(int)> fun;
- // expected-error at atomic:* {{no member named 'fetch_add' in}}
+ // expected-error@*:* {{no member named 'fetch_add' in}}
std::atomic_fetch_add(&fun, 0);
}
}
diff --git a/libcxx/test/libcxx/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_add_explicit.verify.cpp b/libcxx/test/libcxx/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_add_explicit.verify.cpp
index 773dbc7fa432c..afcd995c89552 100644
--- a/libcxx/test/libcxx/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_add_explicit.verify.cpp
+++ b/libcxx/test/libcxx/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_add_explicit.verify.cpp
@@ -21,12 +21,12 @@
void void_pointer() {
{
volatile std::atomic<void*> obj;
- // expected-error at atomic:* {{incomplete type 'void' where a complete type is required}}
+ // expected-error@*:* {{incomplete type 'void' where a complete type is required}}
std::atomic_fetch_add_explicit(&obj, 0, std::memory_order_relaxed);
}
{
std::atomic<void*> obj;
- // expected-error at atomic:* {{incomplete type 'void' where a complete type is required}}
+ // expected-error@*:* {{incomplete type 'void' where a complete type is required}}
std::atomic_fetch_add_explicit(&obj, 0, std::memory_order_relaxed);
}
}
@@ -36,12 +36,12 @@ struct Incomplete;
void pointer_to_incomplete_type() {
{
volatile std::atomic<Incomplete*> obj;
- // expected-error at atomic:* {{incomplete type 'Incomplete' where a complete type is required}}
+ // expected-error@*:* {{incomplete type 'Incomplete' where a complete type is required}}
std::atomic_fetch_add_explicit(&obj, 0, std::memory_order_relaxed);
}
{
std::atomic<Incomplete*> obj;
- // expected-error at atomic:* {{incomplete type 'Incomplete' where a complete type is required}}
+ // expected-error@*:* {{incomplete type 'Incomplete' where a complete type is required}}
std::atomic_fetch_add_explicit(&obj, 0, std::memory_order_relaxed);
}
}
@@ -49,12 +49,12 @@ void pointer_to_incomplete_type() {
void function_pointer() {
{
volatile std::atomic<void (*)(int)> fun;
- // expected-error-re at atomic:* {{{{(static_assert|static assertion)}} failed due to requirement '!is_function<void (int)>::value'{{.*}}Pointer to function isn't allowed}}
+ // expected-error-re@*:* {{{{(static_assert|static assertion)}} failed due to requirement '!is_function<void (int)>::value'{{.*}}Pointer to function isn't allowed}}
std::atomic_fetch_add_explicit(&fun, 0, std::memory_order_relaxed);
}
{
std::atomic<void (*)(int)> fun;
- // expected-error-re at atomic:* {{{{(static_assert|static assertion)}} failed due to requirement '!is_function<void (int)>::value'{{.*}}Pointer to function isn't allowed}}
+ // expected-error-re@*:* {{{{(static_assert|static assertion)}} failed due to requirement '!is_function<void (int)>::value'{{.*}}Pointer to function isn't allowed}}
std::atomic_fetch_add_explicit(&fun, 0, std::memory_order_relaxed);
}
}
@@ -66,12 +66,12 @@ struct S {
void member_function_pointer() {
{
volatile std::atomic<void (S::*)(int)> fun;
- // expected-error at atomic:* {{no member named 'fetch_add' in}}
+ // expected-error@*:* {{no member named 'fetch_add' in}}
std::atomic_fetch_add_explicit(&fun, 0, std::memory_order_relaxed);
}
{
std::atomic<void (S::*)(int)> fun;
- // expected-error at atomic:* {{no member named 'fetch_add' in}}
+ // expected-error@*:* {{no member named 'fetch_add' in}}
std::atomic_fetch_add_explicit(&fun, 0, std::memory_order_relaxed);
}
}
diff --git a/libcxx/test/libcxx/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_sub.verify.cpp b/libcxx/test/libcxx/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_sub.verify.cpp
index c2cf156b7f764..f179bd080466d 100644
--- a/libcxx/test/libcxx/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_sub.verify.cpp
+++ b/libcxx/test/libcxx/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_sub.verify.cpp
@@ -18,12 +18,12 @@
void void_pointer() {
{
volatile std::atomic<void*> obj;
- // expected-error at atomic:* {{incomplete type 'void' where a complete type is required}}
+ // expected-error@*:* {{incomplete type 'void' where a complete type is required}}
std::atomic_fetch_sub(&obj, 0);
}
{
std::atomic<void*> obj;
- // expected-error at atomic:* {{incomplete type 'void' where a complete type is required}}
+ // expected-error@*:* {{incomplete type 'void' where a complete type is required}}
std::atomic_fetch_sub(&obj, 0);
}
}
@@ -33,12 +33,12 @@ struct Incomplete;
void pointer_to_incomplete_type() {
{
volatile std::atomic<Incomplete*> obj;
- // expected-error at atomic:* {{incomplete type 'Incomplete' where a complete type is required}}
+ // expected-error@*:* {{incomplete type 'Incomplete' where a complete type is required}}
std::atomic_fetch_sub(&obj, 0);
}
{
std::atomic<Incomplete*> obj;
- // expected-error at atomic:* {{incomplete type 'Incomplete' where a complete type is required}}
+ // expected-error@*:* {{incomplete type 'Incomplete' where a complete type is required}}
std::atomic_fetch_sub(&obj, 0);
}
}
@@ -46,12 +46,12 @@ void pointer_to_incomplete_type() {
void function_pointer() {
{
volatile std::atomic<void (*)(int)> fun;
- // expected-error-re at atomic:* {{{{(static_assert|static assertion)}} failed due to requirement '!is_function<void (int)>::value'{{.*}}Pointer to function isn't allowed}}
+ // expected-error-re@*:* {{{{(static_assert|static assertion)}} failed due to requirement '!is_function<void (int)>::value'{{.*}}Pointer to function isn't allowed}}
std::atomic_fetch_sub(&fun, 0);
}
{
std::atomic<void (*)(int)> fun;
- // expected-error-re at atomic:* {{{{(static_assert|static assertion)}} failed due to requirement '!is_function<void (int)>::value'{{.*}}Pointer to function isn't allowed}}
+ // expected-error-re@*:* {{{{(static_assert|static assertion)}} failed due to requirement '!is_function<void (int)>::value'{{.*}}Pointer to function isn't allowed}}
std::atomic_fetch_sub(&fun, 0);
}
}
@@ -63,12 +63,12 @@ struct S {
void member_function_pointer() {
{
volatile std::atomic<void (S::*)(int)> fun;
- // expected-error at atomic:* {{no member named 'fetch_sub' in}}
+ // expected-error@*:* {{no member named 'fetch_sub' in}}
std::atomic_fetch_sub(&fun, 0);
}
{
std::atomic<void (S::*)(int)> fun;
- // expected-error at atomic:* {{no member named 'fetch_sub' in}}
+ // expected-error@*:* {{no member named 'fetch_sub' in}}
std::atomic_fetch_sub(&fun, 0);
}
}
diff --git a/libcxx/test/libcxx/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_sub_explicit.verify.cpp b/libcxx/test/libcxx/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_sub_explicit.verify.cpp
index 73c2b963b4f39..bbab767885392 100644
--- a/libcxx/test/libcxx/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_sub_explicit.verify.cpp
+++ b/libcxx/test/libcxx/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_sub_explicit.verify.cpp
@@ -21,12 +21,12 @@
void void_pointer() {
{
volatile std::atomic<void*> obj;
- // expected-error at atomic:* {{incomplete type 'void' where a complete type is required}}
+ // expected-error@*:* {{incomplete type 'void' where a complete type is required}}
std::atomic_fetch_sub_explicit(&obj, 0, std::memory_order_relaxed);
}
{
std::atomic<void*> obj;
- // expected-error at atomic:* {{incomplete type 'void' where a complete type is required}}
+ // expected-error@*:* {{incomplete type 'void' where a complete type is required}}
std::atomic_fetch_sub_explicit(&obj, 0, std::memory_order_relaxed);
}
}
@@ -36,12 +36,12 @@ struct Incomplete;
void pointer_to_incomplete_type() {
{
volatile std::atomic<Incomplete*> obj;
- // expected-error at atomic:* {{incomplete type 'Incomplete' where a complete type is required}}
+ // expected-error@*:* {{incomplete type 'Incomplete' where a complete type is required}}
std::atomic_fetch_sub_explicit(&obj, 0, std::memory_order_relaxed);
}
{
std::atomic<Incomplete*> obj;
- // expected-error at atomic:* {{incomplete type 'Incomplete' where a complete type is required}}
+ // expected-error@*:* {{incomplete type 'Incomplete' where a complete type is required}}
std::atomic_fetch_sub_explicit(&obj, 0, std::memory_order_relaxed);
}
}
@@ -49,12 +49,12 @@ void pointer_to_incomplete_type() {
void function_pointer() {
{
volatile std::atomic<void (*)(int)> fun;
- // expected-error-re at atomic:* {{{{(static_assert|static assertion)}} failed due to requirement '!is_function<void (int)>::value'{{.*}}Pointer to function isn't allowed}}
+ // expected-error-re@*:* {{{{(static_assert|static assertion)}} failed due to requirement '!is_function<void (int)>::value'{{.*}}Pointer to function isn't allowed}}
std::atomic_fetch_sub_explicit(&fun, 0, std::memory_order_relaxed);
}
{
std::atomic<void (*)(int)> fun;
- // expected-error-re at atomic:* {{{{(static_assert|static assertion)}} failed due to requirement '!is_function<void (int)>::value'{{.*}}Pointer to function isn't allowed}}
+ // expected-error-re@*:* {{{{(static_assert|static assertion)}} failed due to requirement '!is_function<void (int)>::value'{{.*}}Pointer to function isn't allowed}}
std::atomic_fetch_sub_explicit(&fun, 0, std::memory_order_relaxed);
}
}
@@ -66,12 +66,12 @@ struct S {
void member_function_pointer() {
{
volatile std::atomic<void (S::*)(int)> fun;
- // expected-error at atomic:* {{no member named 'fetch_sub' in}}
+ // expected-error@*:* {{no member named 'fetch_sub' in}}
std::atomic_fetch_sub_explicit(&fun, 0, std::memory_order_relaxed);
}
{
std::atomic<void (S::*)(int)> fun;
- // expected-error at atomic:* {{no member named 'fetch_sub' in}}
+ // expected-error@*:* {{no member named 'fetch_sub' in}}
std::atomic_fetch_sub_explicit(&fun, 0, std::memory_order_relaxed);
}
}
diff --git a/libcxx/test/libcxx/atomics/bit-int.verify.cpp b/libcxx/test/libcxx/atomics/bit-int.verify.cpp
index fc6a5290ac3ca..612688d43a908 100644
--- a/libcxx/test/libcxx/atomics/bit-int.verify.cpp
+++ b/libcxx/test/libcxx/atomics/bit-int.verify.cpp
@@ -20,7 +20,7 @@
int main(int, char**)
{
- // expected-error at atomic:*1 {{_Atomic cannot be applied to integer type '_BitInt(32)'}}
+ // expected-error@*:*1 {{_Atomic cannot be applied to integer type '_BitInt(32)'}}
std::atomic<_BitInt(32)> x(42);
return 0;
diff --git a/libcxx/test/libcxx/private_headers.verify.cpp b/libcxx/test/libcxx/private_headers.verify.cpp
index 49c0d1a81a765..a6c1ef0ff9144 100644
--- a/libcxx/test/libcxx/private_headers.verify.cpp
+++ b/libcxx/test/libcxx/private_headers.verify.cpp
@@ -229,6 +229,20 @@ END-SCRIPT
#include <__algorithm/unwrap_iter.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/unwrap_iter.h'}}
#include <__algorithm/unwrap_range.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/unwrap_range.h'}}
#include <__algorithm/upper_bound.h> // expected-error@*:* {{use of private header from outside its module: '__algorithm/upper_bound.h'}}
+#include <__atomic/aliases.h> // expected-error@*:* {{use of private header from outside its module: '__atomic/aliases.h'}}
+#include <__atomic/atomic.h> // expected-error@*:* {{use of private header from outside its module: '__atomic/atomic.h'}}
+#include <__atomic/atomic_base.h> // expected-error@*:* {{use of private header from outside its module: '__atomic/atomic_base.h'}}
+#include <__atomic/atomic_flag.h> // expected-error@*:* {{use of private header from outside its module: '__atomic/atomic_flag.h'}}
+#include <__atomic/atomic_init.h> // expected-error@*:* {{use of private header from outside its module: '__atomic/atomic_init.h'}}
+#include <__atomic/atomic_lock_free.h> // expected-error@*:* {{use of private header from outside its module: '__atomic/atomic_lock_free.h'}}
+#include <__atomic/atomic_sync.h> // expected-error@*:* {{use of private header from outside its module: '__atomic/atomic_sync.h'}}
+#include <__atomic/check_memory_order.h> // expected-error@*:* {{use of private header from outside its module: '__atomic/check_memory_order.h'}}
+#include <__atomic/contention_t.h> // expected-error@*:* {{use of private header from outside its module: '__atomic/contention_t.h'}}
+#include <__atomic/cxx_atomic_impl.h> // expected-error@*:* {{use of private header from outside its module: '__atomic/cxx_atomic_impl.h'}}
+#include <__atomic/fence.h> // expected-error@*:* {{use of private header from outside its module: '__atomic/fence.h'}}
+#include <__atomic/is_always_lock_free.h> // expected-error@*:* {{use of private header from outside its module: '__atomic/is_always_lock_free.h'}}
+#include <__atomic/kill_dependency.h> // expected-error@*:* {{use of private header from outside its module: '__atomic/kill_dependency.h'}}
+#include <__atomic/memory_order.h> // expected-error@*:* {{use of private header from outside its module: '__atomic/memory_order.h'}}
#include <__availability> // expected-error@*:* {{use of private header from outside its module: '__availability'}}
#include <__bit/bit_cast.h> // expected-error@*:* {{use of private header from outside its module: '__bit/bit_cast.h'}}
#include <__bit/bit_ceil.h> // expected-error@*:* {{use of private header from outside its module: '__bit/bit_ceil.h'}}
diff --git a/libcxx/test/libcxx/transitive_includes/cxx03.csv b/libcxx/test/libcxx/transitive_includes/cxx03.csv
index 2e94901f53103..7c25c6c40e145 100644
--- a/libcxx/test/libcxx/transitive_includes/cxx03.csv
+++ b/libcxx/test/libcxx/transitive_includes/cxx03.csv
@@ -51,6 +51,7 @@ atomic cmath
atomic compare
atomic cstddef
atomic cstdint
+atomic cstdlib
atomic cstring
atomic ctime
atomic iosfwd
diff --git a/libcxx/test/libcxx/transitive_includes/cxx11.csv b/libcxx/test/libcxx/transitive_includes/cxx11.csv
index a502ea7df8c6a..ae3b789481fca 100644
--- a/libcxx/test/libcxx/transitive_includes/cxx11.csv
+++ b/libcxx/test/libcxx/transitive_includes/cxx11.csv
@@ -51,6 +51,7 @@ atomic cmath
atomic compare
atomic cstddef
atomic cstdint
+atomic cstdlib
atomic cstring
atomic ctime
atomic iosfwd
diff --git a/libcxx/test/libcxx/transitive_includes/cxx14.csv b/libcxx/test/libcxx/transitive_includes/cxx14.csv
index 5802061582cbb..4793bee34d16a 100644
--- a/libcxx/test/libcxx/transitive_includes/cxx14.csv
+++ b/libcxx/test/libcxx/transitive_includes/cxx14.csv
@@ -51,6 +51,7 @@ atomic cmath
atomic compare
atomic cstddef
atomic cstdint
+atomic cstdlib
atomic cstring
atomic ctime
atomic iosfwd
diff --git a/libcxx/test/libcxx/transitive_includes/cxx17.csv b/libcxx/test/libcxx/transitive_includes/cxx17.csv
index 5802061582cbb..4793bee34d16a 100644
--- a/libcxx/test/libcxx/transitive_includes/cxx17.csv
+++ b/libcxx/test/libcxx/transitive_includes/cxx17.csv
@@ -51,6 +51,7 @@ atomic cmath
atomic compare
atomic cstddef
atomic cstdint
+atomic cstdlib
atomic cstring
atomic ctime
atomic iosfwd
diff --git a/libcxx/test/libcxx/transitive_includes/cxx20.csv b/libcxx/test/libcxx/transitive_includes/cxx20.csv
index 0ea9ac5ee3230..092a0fdf79ce8 100644
--- a/libcxx/test/libcxx/transitive_includes/cxx20.csv
+++ b/libcxx/test/libcxx/transitive_includes/cxx20.csv
@@ -49,6 +49,7 @@ atomic cmath
atomic compare
atomic cstddef
atomic cstdint
+atomic cstdlib
atomic cstring
atomic ctime
atomic iosfwd
diff --git a/libcxx/test/libcxx/transitive_includes/cxx2b.csv b/libcxx/test/libcxx/transitive_includes/cxx2b.csv
index 120dc970121b4..b94bfbe4efd84 100644
--- a/libcxx/test/libcxx/transitive_includes/cxx2b.csv
+++ b/libcxx/test/libcxx/transitive_includes/cxx2b.csv
@@ -29,6 +29,7 @@ array type_traits
array version
atomic cstddef
atomic cstdint
+atomic cstdlib
atomic cstring
atomic ctime
atomic iosfwd
diff --git a/libcxx/test/std/atomics/atomics.types.generic/trivially_copyable.verify.cpp b/libcxx/test/std/atomics/atomics.types.generic/trivially_copyable.verify.cpp
index 707333ada3044..0955707cdcf38 100644
--- a/libcxx/test/std/atomics/atomics.types.generic/trivially_copyable.verify.cpp
+++ b/libcxx/test/std/atomics/atomics.types.generic/trivially_copyable.verify.cpp
@@ -27,5 +27,5 @@ struct NotTriviallyCopyable {
void f() {
NotTriviallyCopyable x(42);
- std::atomic<NotTriviallyCopyable> a(x); // expected-error at atomic:* {{std::atomic<T> requires that 'T' be a trivially copyable type}}
+ std::atomic<NotTriviallyCopyable> a(x); // expected-error@*:* {{std::atomic<T> requires that 'T' be a trivially copyable type}}
}
diff --git a/libcxx/utils/data/ignore_format.txt b/libcxx/utils/data/ignore_format.txt
index d978c37aa7694..49c2d4b8bd0d6 100644
--- a/libcxx/utils/data/ignore_format.txt
+++ b/libcxx/utils/data/ignore_format.txt
@@ -217,6 +217,19 @@ libcxx/include/__algorithm/upper_bound.h
libcxx/include/any
libcxx/include/array
libcxx/include/atomic
+libcxx/include/__atomic/aliases.h
+libcxx/include/__atomic/atomic_base.h
+libcxx/include/__atomic/atomic_flag.h
+libcxx/include/__atomic/atomic.h
+libcxx/include/__atomic/atomic_init.h
+libcxx/include/__atomic/atomic_lock_free.h
+libcxx/include/__atomic/atomic_sync.h
+libcxx/include/__atomic/check_memory_order.h
+libcxx/include/__atomic/contention_t.h
+libcxx/include/__atomic/cxx_atomic_impl.h
+libcxx/include/__atomic/fence.h
+libcxx/include/__atomic/kill_dependency.h
+libcxx/include/__atomic/memory_order.h
libcxx/include/__availability
libcxx/include/barrier
libcxx/include/__bit/bit_cast.h
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