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// -*- C++ -*- |
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//===--------------------------- atomic -----------------------------------===// |
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// |
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// The LLVM Compiler Infrastructure |
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// |
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// This file is distributed under the University of Illinois Open Source |
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// License. See LICENSE.TXT for details. |
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// |
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//===----------------------------------------------------------------------===// |
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|
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#ifndef _LIBCPP_ATOMIC |
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#define _LIBCPP_ATOMIC |
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|
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/* |
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atomic synopsis |
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|
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namespace std |
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{
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// order and consistency |
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|
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typedef enum memory_order |
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{
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memory_order_relaxed, |
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memory_order_consume, // load-consume |
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memory_order_acquire, // load-acquire |
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memory_order_release, // store-release |
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memory_order_acq_rel, // store-release load-acquire |
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memory_order_seq_cst // store-release load-acquire |
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} memory_order; |
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|
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template <class T> T kill_dependency(T y) noexcept; |
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|
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// lock-free property |
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|
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#define ATOMIC_BOOL_LOCK_FREE unspecified |
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#define ATOMIC_CHAR_LOCK_FREE unspecified |
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#define ATOMIC_CHAR16_T_LOCK_FREE unspecified |
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#define ATOMIC_CHAR32_T_LOCK_FREE unspecified |
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#define ATOMIC_WCHAR_T_LOCK_FREE unspecified |
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#define ATOMIC_SHORT_LOCK_FREE unspecified |
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#define ATOMIC_INT_LOCK_FREE unspecified |
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#define ATOMIC_LONG_LOCK_FREE unspecified |
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#define ATOMIC_LLONG_LOCK_FREE unspecified |
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#define ATOMIC_POINTER_LOCK_FREE unspecified |
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|
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// flag type and operations |
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|
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typedef struct atomic_flag |
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{
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bool test_and_set(memory_order m = memory_order_seq_cst) volatile noexcept; |
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bool test_and_set(memory_order m = memory_order_seq_cst) noexcept; |
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void clear(memory_order m = memory_order_seq_cst) volatile noexcept; |
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void clear(memory_order m = memory_order_seq_cst) noexcept; |
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atomic_flag() noexcept = default; |
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atomic_flag(const atomic_flag&) = delete; |
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atomic_flag& operator=(const atomic_flag&) = delete; |
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atomic_flag& operator=(const atomic_flag&) volatile = delete; |
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} atomic_flag; |
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|
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bool |
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atomic_flag_test_and_set(volatile atomic_flag* obj) noexcept; |
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|
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bool |
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atomic_flag_test_and_set(atomic_flag* obj) noexcept; |
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|
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bool |
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atomic_flag_test_and_set_explicit(volatile atomic_flag* obj, |
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memory_order m) noexcept; |
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|
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bool |
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atomic_flag_test_and_set_explicit(atomic_flag* obj, memory_order m) noexcept; |
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|
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void |
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atomic_flag_clear(volatile atomic_flag* obj) noexcept; |
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|
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void |
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atomic_flag_clear(atomic_flag* obj) noexcept; |
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|
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void |
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atomic_flag_clear_explicit(volatile atomic_flag* obj, memory_order m) noexcept; |
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|
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void |
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atomic_flag_clear_explicit(atomic_flag* obj, memory_order m) noexcept; |
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|
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#define ATOMIC_FLAG_INIT see below |
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#define ATOMIC_VAR_INIT(value) see below |
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|
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template <class T> |
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struct atomic |
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{
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bool is_lock_free() const volatile noexcept; |
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bool is_lock_free() const noexcept; |
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void store(T desr, memory_order m = memory_order_seq_cst) volatile noexcept; |
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void store(T desr, memory_order m = memory_order_seq_cst) noexcept; |
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T load(memory_order m = memory_order_seq_cst) const volatile noexcept; |
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T load(memory_order m = memory_order_seq_cst) const noexcept; |
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operator T() const volatile noexcept; |
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operator T() const noexcept; |
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T exchange(T desr, memory_order m = memory_order_seq_cst) volatile noexcept; |
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T exchange(T desr, memory_order m = memory_order_seq_cst) noexcept; |
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bool compare_exchange_weak(T& expc, T desr, |
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memory_order s, memory_order f) volatile noexcept; |
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bool compare_exchange_weak(T& expc, T desr, memory_order s, memory_order f) noexcept; |
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bool compare_exchange_strong(T& expc, T desr, |
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memory_order s, memory_order f) volatile noexcept; |
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bool compare_exchange_strong(T& expc, T desr, |
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memory_order s, memory_order f) noexcept; |
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bool compare_exchange_weak(T& expc, T desr, |
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memory_order m = memory_order_seq_cst) volatile noexcept; |
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bool compare_exchange_weak(T& expc, T desr, |
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memory_order m = memory_order_seq_cst) noexcept; |
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bool compare_exchange_strong(T& expc, T desr, |
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memory_order m = memory_order_seq_cst) volatile noexcept; |
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bool compare_exchange_strong(T& expc, T desr, |
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memory_order m = memory_order_seq_cst) noexcept; |
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|
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atomic() noexcept = default; |
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constexpr atomic(T desr) noexcept; |
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atomic(const atomic&) = delete; |
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atomic& operator=(const atomic&) = delete; |
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atomic& operator=(const atomic&) volatile = delete; |
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T operator=(T) volatile noexcept; |
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T operator=(T) noexcept; |
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}; |
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|
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template <> |
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struct atomic<integral> |
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{
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bool is_lock_free() const volatile noexcept; |
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bool is_lock_free() const noexcept; |
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void store(integral desr, memory_order m = memory_order_seq_cst) volatile noexcept; |
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void store(integral desr, memory_order m = memory_order_seq_cst) noexcept; |
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integral load(memory_order m = memory_order_seq_cst) const volatile noexcept; |
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integral load(memory_order m = memory_order_seq_cst) const noexcept; |
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operator integral() const volatile noexcept; |
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operator integral() const noexcept; |
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integral exchange(integral desr, |
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memory_order m = memory_order_seq_cst) volatile noexcept; |
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integral exchange(integral desr, memory_order m = memory_order_seq_cst) noexcept; |
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bool compare_exchange_weak(integral& expc, integral desr, |
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memory_order s, memory_order f) volatile noexcept; |
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bool compare_exchange_weak(integral& expc, integral desr, |
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memory_order s, memory_order f) noexcept; |
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bool compare_exchange_strong(integral& expc, integral desr, |
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memory_order s, memory_order f) volatile noexcept; |
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bool compare_exchange_strong(integral& expc, integral desr, |
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memory_order s, memory_order f) noexcept; |
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bool compare_exchange_weak(integral& expc, integral desr, |
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memory_order m = memory_order_seq_cst) volatile noexcept; |
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bool compare_exchange_weak(integral& expc, integral desr, |
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memory_order m = memory_order_seq_cst) noexcept; |
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bool compare_exchange_strong(integral& expc, integral desr, |
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memory_order m = memory_order_seq_cst) volatile noexcept; |
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bool compare_exchange_strong(integral& expc, integral desr, |
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memory_order m = memory_order_seq_cst) noexcept; |
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|
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integral |
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fetch_add(integral op, memory_order m = memory_order_seq_cst) volatile noexcept; |
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integral fetch_add(integral op, memory_order m = memory_order_seq_cst) noexcept; |
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integral |
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fetch_sub(integral op, memory_order m = memory_order_seq_cst) volatile noexcept; |
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integral fetch_sub(integral op, memory_order m = memory_order_seq_cst) noexcept; |
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integral |
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fetch_and(integral op, memory_order m = memory_order_seq_cst) volatile noexcept; |
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integral fetch_and(integral op, memory_order m = memory_order_seq_cst) noexcept; |
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integral |
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fetch_or(integral op, memory_order m = memory_order_seq_cst) volatile noexcept; |
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integral fetch_or(integral op, memory_order m = memory_order_seq_cst) noexcept; |
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integral |
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fetch_xor(integral op, memory_order m = memory_order_seq_cst) volatile noexcept; |
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integral fetch_xor(integral op, memory_order m = memory_order_seq_cst) noexcept; |
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|
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atomic() noexcept = default; |
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constexpr atomic(integral desr) noexcept; |
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atomic(const atomic&) = delete; |
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atomic& operator=(const atomic&) = delete; |
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atomic& operator=(const atomic&) volatile = delete; |
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integral operator=(integral desr) volatile noexcept; |
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integral operator=(integral desr) noexcept; |
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|
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integral operator++(int) volatile noexcept; |
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integral operator++(int) noexcept; |
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integral operator--(int) volatile noexcept; |
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integral operator--(int) noexcept; |
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integral operator++() volatile noexcept; |
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integral operator++() noexcept; |
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integral operator--() volatile noexcept; |
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integral operator--() noexcept; |
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integral operator+=(integral op) volatile noexcept; |
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integral operator+=(integral op) noexcept; |
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integral operator-=(integral op) volatile noexcept; |
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integral operator-=(integral op) noexcept; |
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integral operator&=(integral op) volatile noexcept; |
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integral operator&=(integral op) noexcept; |
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integral operator|=(integral op) volatile noexcept; |
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integral operator|=(integral op) noexcept; |
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integral operator^=(integral op) volatile noexcept; |
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integral operator^=(integral op) noexcept; |
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}; |
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|
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template <class T> |
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struct atomic<T*> |
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{
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bool is_lock_free() const volatile noexcept; |
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bool is_lock_free() const noexcept; |
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void store(T* desr, memory_order m = memory_order_seq_cst) volatile noexcept; |
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void store(T* desr, memory_order m = memory_order_seq_cst) noexcept; |
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T* load(memory_order m = memory_order_seq_cst) const volatile noexcept; |
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T* load(memory_order m = memory_order_seq_cst) const noexcept; |
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operator T*() const volatile noexcept; |
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operator T*() const noexcept; |
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T* exchange(T* desr, memory_order m = memory_order_seq_cst) volatile noexcept; |
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T* exchange(T* desr, memory_order m = memory_order_seq_cst) noexcept; |
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bool compare_exchange_weak(T*& expc, T* desr, |
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memory_order s, memory_order f) volatile noexcept; |
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bool compare_exchange_weak(T*& expc, T* desr, |
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memory_order s, memory_order f) noexcept; |
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bool compare_exchange_strong(T*& expc, T* desr, |
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memory_order s, memory_order f) volatile noexcept; |
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bool compare_exchange_strong(T*& expc, T* desr, |
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memory_order s, memory_order f) noexcept; |
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bool compare_exchange_weak(T*& expc, T* desr, |
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memory_order m = memory_order_seq_cst) volatile noexcept; |
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bool compare_exchange_weak(T*& expc, T* desr, |
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memory_order m = memory_order_seq_cst) noexcept; |
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bool compare_exchange_strong(T*& expc, T* desr, |
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memory_order m = memory_order_seq_cst) volatile noexcept; |
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bool compare_exchange_strong(T*& expc, T* desr, |
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memory_order m = memory_order_seq_cst) noexcept; |
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T* fetch_add(ptrdiff_t op, memory_order m = memory_order_seq_cst) volatile noexcept; |
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T* fetch_add(ptrdiff_t op, memory_order m = memory_order_seq_cst) noexcept; |
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T* fetch_sub(ptrdiff_t op, memory_order m = memory_order_seq_cst) volatile noexcept; |
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T* fetch_sub(ptrdiff_t op, memory_order m = memory_order_seq_cst) noexcept; |
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|
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atomic() noexcept = default; |
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constexpr atomic(T* desr) noexcept; |
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atomic(const atomic&) = delete; |
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atomic& operator=(const atomic&) = delete; |
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atomic& operator=(const atomic&) volatile = delete; |
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T* operator=(T*) volatile noexcept; |
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T* operator=(T*) noexcept; |
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T* operator++(int) volatile noexcept; |
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T* operator++(int) noexcept; |
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T* operator--(int) volatile noexcept; |
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T* operator--(int) noexcept; |
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T* operator++() volatile noexcept; |
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T* operator++() noexcept; |
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T* operator--() volatile noexcept; |
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T* operator--() noexcept; |
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T* operator+=(ptrdiff_t op) volatile noexcept; |
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T* operator+=(ptrdiff_t op) noexcept; |
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T* operator-=(ptrdiff_t op) volatile noexcept; |
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T* operator-=(ptrdiff_t op) noexcept; |
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}; |
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template <class T> |
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bool |
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atomic_is_lock_free(const volatile atomic<T>* obj) noexcept; |
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template <class T> |
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bool |
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atomic_is_lock_free(const atomic<T>* obj) noexcept; |
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template <class T> |
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void |
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atomic_init(volatile atomic<T>* obj, T desr) noexcept; |
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template <class T> |
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void |
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atomic_init(atomic<T>* obj, T desr) noexcept; |
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template <class T> |
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void |
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atomic_store(volatile atomic<T>* obj, T desr) noexcept; |
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template <class T> |
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void |
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atomic_store(atomic<T>* obj, T desr) noexcept; |
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template <class T> |
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void |
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atomic_store_explicit(volatile atomic<T>* obj, T desr, memory_order m) noexcept; |
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template <class T> |
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void |
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atomic_store_explicit(atomic<T>* obj, T desr, memory_order m) noexcept; |
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template <class T> |
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T |
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atomic_load(const volatile atomic<T>* obj) noexcept; |
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template <class T> |
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T |
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atomic_load(const atomic<T>* obj) noexcept; |
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template <class T> |
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T |
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atomic_load_explicit(const volatile atomic<T>* obj, memory_order m) noexcept; |
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template <class T> |
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T |
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atomic_load_explicit(const atomic<T>* obj, memory_order m) noexcept; |
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template <class T> |
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T |
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atomic_exchange(volatile atomic<T>* obj, T desr) noexcept; |
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template <class T> |
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T |
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atomic_exchange(atomic<T>* obj, T desr) noexcept; |
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template <class T> |
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T |
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atomic_exchange_explicit(volatile atomic<T>* obj, T desr, memory_order m) noexcept; |
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template <class T> |
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T |
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atomic_exchange_explicit(atomic<T>* obj, T desr, memory_order m) noexcept; |
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template <class T> |
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bool |
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atomic_compare_exchange_weak(volatile atomic<T>* obj, T* expc, T desr) noexcept; |
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template <class T> |
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bool |
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atomic_compare_exchange_weak(atomic<T>* obj, T* expc, T desr) noexcept; |
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template <class T> |
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bool |
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atomic_compare_exchange_strong(volatile atomic<T>* obj, T* expc, T desr) noexcept; |
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|
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template <class T> |
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bool |
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atomic_compare_exchange_strong(atomic<T>* obj, T* expc, T desr) noexcept; |
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|
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template <class T> |
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bool |
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atomic_compare_exchange_weak_explicit(volatile atomic<T>* obj, T* expc, |
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T desr, |
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memory_order s, memory_order f) noexcept; |
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|
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template <class T> |
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bool |
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atomic_compare_exchange_weak_explicit(atomic<T>* obj, T* expc, T desr, |
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memory_order s, memory_order f) noexcept; |
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|
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template <class T> |
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bool |
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atomic_compare_exchange_strong_explicit(volatile atomic<T>* obj, |
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T* expc, T desr, |
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memory_order s, memory_order f) noexcept; |
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|
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template <class T> |
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bool |
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atomic_compare_exchange_strong_explicit(atomic<T>* obj, T* expc, |
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T desr, |
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memory_order s, memory_order f) noexcept; |
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|
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template <class Integral> |
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Integral |
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atomic_fetch_add(volatile atomic<Integral>* obj, Integral op) noexcept; |
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|
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template <class Integral> |
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Integral |
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atomic_fetch_add(atomic<Integral>* obj, Integral op) noexcept; |
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|
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template <class Integral> |
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Integral |
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atomic_fetch_add_explicit(volatile atomic<Integral>* obj, Integral op, |
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memory_order m) noexcept; |
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template <class Integral> |
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Integral |
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atomic_fetch_add_explicit(atomic<Integral>* obj, Integral op, |
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memory_order m) noexcept; |
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template <class Integral> |
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Integral |
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atomic_fetch_sub(volatile atomic<Integral>* obj, Integral op) noexcept; |
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|
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template <class Integral> |
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Integral |
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atomic_fetch_sub(atomic<Integral>* obj, Integral op) noexcept; |
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|
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template <class Integral> |
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Integral |
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atomic_fetch_sub_explicit(volatile atomic<Integral>* obj, Integral op, |
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memory_order m) noexcept; |
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template <class Integral> |
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Integral |
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atomic_fetch_sub_explicit(atomic<Integral>* obj, Integral op, |
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memory_order m) noexcept; |
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template <class Integral> |
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Integral |
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atomic_fetch_and(volatile atomic<Integral>* obj, Integral op) noexcept; |
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|
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template <class Integral> |
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Integral |
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atomic_fetch_and(atomic<Integral>* obj, Integral op) noexcept; |
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|
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template <class Integral> |
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Integral |
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atomic_fetch_and_explicit(volatile atomic<Integral>* obj, Integral op, |
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memory_order m) noexcept; |
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template <class Integral> |
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Integral |
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atomic_fetch_and_explicit(atomic<Integral>* obj, Integral op, |
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memory_order m) noexcept; |
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template <class Integral> |
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Integral |
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atomic_fetch_or(volatile atomic<Integral>* obj, Integral op) noexcept; |
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|
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template <class Integral> |
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Integral |
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atomic_fetch_or(atomic<Integral>* obj, Integral op) noexcept; |
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|
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template <class Integral> |
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Integral |
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atomic_fetch_or_explicit(volatile atomic<Integral>* obj, Integral op, |
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memory_order m) noexcept; |
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template <class Integral> |
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Integral |
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atomic_fetch_or_explicit(atomic<Integral>* obj, Integral op, |
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memory_order m) noexcept; |
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template <class Integral> |
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Integral |
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atomic_fetch_xor(volatile atomic<Integral>* obj, Integral op) noexcept; |
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|
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template <class Integral> |
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Integral |
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atomic_fetch_xor(atomic<Integral>* obj, Integral op) noexcept; |
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|
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template <class Integral> |
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Integral |
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atomic_fetch_xor_explicit(volatile atomic<Integral>* obj, Integral op, |
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memory_order m) noexcept; |
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template <class Integral> |
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Integral |
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atomic_fetch_xor_explicit(atomic<Integral>* obj, Integral op, |
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memory_order m) noexcept; |
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|
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template <class T> |
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T* |
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atomic_fetch_add(volatile atomic<T*>* obj, ptrdiff_t op) noexcept; |
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|
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template <class T> |
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T* |
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atomic_fetch_add(atomic<T*>* obj, ptrdiff_t op) noexcept; |
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|
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template <class T> |
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T* |
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atomic_fetch_add_explicit(volatile atomic<T*>* obj, ptrdiff_t op, |
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memory_order m) noexcept; |
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template <class T> |
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T* |
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atomic_fetch_add_explicit(atomic<T*>* obj, ptrdiff_t op, memory_order m) noexcept; |
| 458 |
|
| 459 |
template <class T> |
| 460 |
T* |
| 461 |
atomic_fetch_sub(volatile atomic<T*>* obj, ptrdiff_t op) noexcept; |
| 462 |
|
| 463 |
template <class T> |
| 464 |
T* |
| 465 |
atomic_fetch_sub(atomic<T*>* obj, ptrdiff_t op) noexcept; |
| 466 |
|
| 467 |
template <class T> |
| 468 |
T* |
| 469 |
atomic_fetch_sub_explicit(volatile atomic<T*>* obj, ptrdiff_t op, |
| 470 |
memory_order m) noexcept; |
| 471 |
template <class T> |
| 472 |
T* |
| 473 |
atomic_fetch_sub_explicit(atomic<T*>* obj, ptrdiff_t op, memory_order m) noexcept; |
| 474 |
|
| 475 |
// Atomics for standard typedef types |
| 476 |
|
| 477 |
typedef atomic<bool> atomic_bool; |
| 478 |
typedef atomic<char> atomic_char; |
| 479 |
typedef atomic<signed char> atomic_schar; |
| 480 |
typedef atomic<unsigned char> atomic_uchar; |
| 481 |
typedef atomic<short> atomic_short; |
| 482 |
typedef atomic<unsigned short> atomic_ushort; |
| 483 |
typedef atomic<int> atomic_int; |
| 484 |
typedef atomic<unsigned int> atomic_uint; |
| 485 |
typedef atomic<long> atomic_long; |
| 486 |
typedef atomic<unsigned long> atomic_ulong; |
| 487 |
typedef atomic<long long> atomic_llong; |
| 488 |
typedef atomic<unsigned long long> atomic_ullong; |
| 489 |
typedef atomic<char16_t> atomic_char16_t; |
| 490 |
typedef atomic<char32_t> atomic_char32_t; |
| 491 |
typedef atomic<wchar_t> atomic_wchar_t; |
| 492 |
|
| 493 |
typedef atomic<int_least8_t> atomic_int_least8_t; |
| 494 |
typedef atomic<uint_least8_t> atomic_uint_least8_t; |
| 495 |
typedef atomic<int_least16_t> atomic_int_least16_t; |
| 496 |
typedef atomic<uint_least16_t> atomic_uint_least16_t; |
| 497 |
typedef atomic<int_least32_t> atomic_int_least32_t; |
| 498 |
typedef atomic<uint_least32_t> atomic_uint_least32_t; |
| 499 |
typedef atomic<int_least64_t> atomic_int_least64_t; |
| 500 |
typedef atomic<uint_least64_t> atomic_uint_least64_t; |
| 501 |
|
| 502 |
typedef atomic<int_fast8_t> atomic_int_fast8_t; |
| 503 |
typedef atomic<uint_fast8_t> atomic_uint_fast8_t; |
| 504 |
typedef atomic<int_fast16_t> atomic_int_fast16_t; |
| 505 |
typedef atomic<uint_fast16_t> atomic_uint_fast16_t; |
| 506 |
typedef atomic<int_fast32_t> atomic_int_fast32_t; |
| 507 |
typedef atomic<uint_fast32_t> atomic_uint_fast32_t; |
| 508 |
typedef atomic<int_fast64_t> atomic_int_fast64_t; |
| 509 |
typedef atomic<uint_fast64_t> atomic_uint_fast64_t; |
| 510 |
|
| 511 |
typedef atomic<intptr_t> atomic_intptr_t; |
| 512 |
typedef atomic<uintptr_t> atomic_uintptr_t; |
| 513 |
typedef atomic<size_t> atomic_size_t; |
| 514 |
typedef atomic<ptrdiff_t> atomic_ptrdiff_t; |
| 515 |
typedef atomic<intmax_t> atomic_intmax_t; |
| 516 |
typedef atomic<uintmax_t> atomic_uintmax_t; |
| 517 |
|
| 518 |
// fences |
| 519 |
|
| 520 |
void atomic_thread_fence(memory_order m) noexcept; |
| 521 |
void atomic_signal_fence(memory_order m) noexcept; |
| 522 |
|
| 523 |
} // std |
| 524 |
|
| 525 |
*/ |
| 526 |
|
| 527 |
#include <__config> |
| 528 |
#include <cstddef> |
| 529 |
#include <cstdint> |
| 530 |
#include <type_traits> |
| 531 |
|
| 532 |
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) |
| 533 |
#pragma GCC system_header |
| 534 |
#endif |
| 535 |
|
| 536 |
#ifdef _LIBCPP_HAS_NO_THREADS |
| 537 |
#error <atomic> is not supported on this single threaded system |
| 538 |
#endif |
| 539 |
#if !defined(_LIBCPP_HAS_C_ATOMIC_IMP) && !defined(_LIBCPP_HAS_GCC_ATOMIC_IMP) |
| 540 |
#error <atomic> is not implemented |
| 541 |
#endif |
| 542 |
|
| 543 |
_LIBCPP_BEGIN_NAMESPACE_STD |
| 544 |
|
| 545 |
typedef enum memory_order |
| 546 |
{
|
| 547 |
memory_order_relaxed, memory_order_consume, memory_order_acquire, |
| 548 |
memory_order_release, memory_order_acq_rel, memory_order_seq_cst |
| 549 |
} memory_order; |
| 550 |
|
| 551 |
#if defined(_LIBCPP_HAS_GCC_ATOMIC_IMP) |
| 552 |
namespace __gcc_atomic {
|
| 553 |
template <typename _Tp> |
| 554 |
struct __gcc_atomic_t {
|
| 555 |
__gcc_atomic_t() _NOEXCEPT {}
|
| 556 |
_LIBCPP_CONSTEXPR explicit __gcc_atomic_t(_Tp value) _NOEXCEPT |
| 557 |
: __a_value(value) {}
|
| 558 |
_Tp __a_value; |
| 559 |
}; |
| 560 |
#define _Atomic(x) __gcc_atomic::__gcc_atomic_t<x> |
| 561 |
|
| 562 |
template <typename _Tp> _Tp __create(); |
| 563 |
|
| 564 |
template <typename _Tp, typename _Td> |
| 565 |
typename enable_if<sizeof(_Tp()->__a_value = __create<_Td>()), char>::type |
| 566 |
__test_atomic_assignable(int); |
| 567 |
template <typename _Tp, typename _Up> |
| 568 |
__two __test_atomic_assignable(...); |
| 569 |
|
| 570 |
template <typename _Tp, typename _Td> |
| 571 |
struct __can_assign {
|
| 572 |
static const bool value = |
| 573 |
sizeof(__test_atomic_assignable<_Tp, _Td>(1)) == sizeof(char); |
| 574 |
}; |
| 575 |
|
| 576 |
static inline constexpr int __to_gcc_order(memory_order __order) {
|
| 577 |
// Avoid switch statement to make this a constexpr. |
| 578 |
return __order == memory_order_relaxed ? __ATOMIC_RELAXED: |
| 579 |
(__order == memory_order_acquire ? __ATOMIC_ACQUIRE: |
| 580 |
(__order == memory_order_release ? __ATOMIC_RELEASE: |
| 581 |
(__order == memory_order_seq_cst ? __ATOMIC_SEQ_CST: |
| 582 |
(__order == memory_order_acq_rel ? __ATOMIC_ACQ_REL: |
| 583 |
__ATOMIC_CONSUME)))); |
| 584 |
} |
| 585 |
|
| 586 |
static inline constexpr int __to_gcc_failure_order(memory_order __order) {
|
| 587 |
// Avoid switch statement to make this a constexpr. |
| 588 |
return __order == memory_order_relaxed ? __ATOMIC_RELAXED: |
| 589 |
(__order == memory_order_acquire ? __ATOMIC_ACQUIRE: |
| 590 |
(__order == memory_order_release ? __ATOMIC_RELAXED: |
| 591 |
(__order == memory_order_seq_cst ? __ATOMIC_SEQ_CST: |
| 592 |
(__order == memory_order_acq_rel ? __ATOMIC_ACQUIRE: |
| 593 |
__ATOMIC_CONSUME)))); |
| 594 |
} |
| 595 |
|
| 596 |
} // namespace __gcc_atomic |
| 597 |
|
| 598 |
template <typename _Tp> |
| 599 |
static inline |
| 600 |
typename enable_if< |
| 601 |
__gcc_atomic::__can_assign<volatile _Atomic(_Tp)*, _Tp>::value>::type |
| 602 |
__c11_atomic_init(volatile _Atomic(_Tp)* __a, _Tp __val) {
|
| 603 |
__a->__a_value = __val; |
| 604 |
} |
| 605 |
|
| 606 |
template <typename _Tp> |
| 607 |
static inline |
| 608 |
typename enable_if< |
| 609 |
!__gcc_atomic::__can_assign<volatile _Atomic(_Tp)*, _Tp>::value && |
| 610 |
__gcc_atomic::__can_assign< _Atomic(_Tp)*, _Tp>::value>::type |
| 611 |
__c11_atomic_init(volatile _Atomic(_Tp)* __a, _Tp __val) {
|
| 612 |
// [atomics.types.generic]p1 guarantees _Tp is trivially copyable. Because |
| 613 |
// the default operator= in an object is not volatile, a byte-by-byte copy |
| 614 |
// is required. |
| 615 |
volatile char* to = reinterpret_cast<volatile char*>(&__a->__a_value); |
| 616 |
volatile char* end = to + sizeof(_Tp); |
| 617 |
char* from = reinterpret_cast<char*>(&__val); |
| 618 |
while (to != end) {
|
| 619 |
*to++ = *from++; |
| 620 |
} |
| 621 |
} |
| 622 |
|
| 623 |
template <typename _Tp> |
| 624 |
static inline void __c11_atomic_init(_Atomic(_Tp)* __a, _Tp __val) {
|
| 625 |
__a->__a_value = __val; |
| 626 |
} |
| 627 |
|
| 628 |
static inline void __c11_atomic_thread_fence(memory_order __order) {
|
| 629 |
__atomic_thread_fence(__gcc_atomic::__to_gcc_order(__order)); |
| 630 |
} |
| 631 |
|
| 632 |
static inline void __c11_atomic_signal_fence(memory_order __order) {
|
| 633 |
__atomic_signal_fence(__gcc_atomic::__to_gcc_order(__order)); |
| 634 |
} |
| 635 |
|
| 636 |
template <typename _Tp> |
| 637 |
static inline void __c11_atomic_store(volatile _Atomic(_Tp)* __a, _Tp __val, |
| 638 |
memory_order __order) {
|
| 639 |
return __atomic_store(&__a->__a_value, &__val, |
| 640 |
__gcc_atomic::__to_gcc_order(__order)); |
| 641 |
} |
| 642 |
|
| 643 |
template <typename _Tp> |
| 644 |
static inline void __c11_atomic_store(_Atomic(_Tp)* __a, _Tp __val, |
| 645 |
memory_order __order) {
|
| 646 |
__atomic_store(&__a->__a_value, &__val, |
| 647 |
__gcc_atomic::__to_gcc_order(__order)); |
| 648 |
} |
| 649 |
|
| 650 |
template <typename _Tp> |
| 651 |
static inline _Tp __c11_atomic_load(volatile _Atomic(_Tp)* __a, |
| 652 |
memory_order __order) {
|
| 653 |
_Tp __ret; |
| 654 |
__atomic_load(&__a->__a_value, &__ret, |
| 655 |
__gcc_atomic::__to_gcc_order(__order)); |
| 656 |
return __ret; |
| 657 |
} |
| 658 |
|
| 659 |
template <typename _Tp> |
| 660 |
static inline _Tp __c11_atomic_load(_Atomic(_Tp)* __a, memory_order __order) {
|
| 661 |
_Tp __ret; |
| 662 |
__atomic_load(&__a->__a_value, &__ret, |
| 663 |
__gcc_atomic::__to_gcc_order(__order)); |
| 664 |
return __ret; |
| 665 |
} |
| 666 |
|
| 667 |
template <typename _Tp> |
| 668 |
static inline _Tp __c11_atomic_exchange(volatile _Atomic(_Tp)* __a, |
| 669 |
_Tp __value, memory_order __order) {
|
| 670 |
_Tp __ret; |
| 671 |
__atomic_exchange(&__a->__a_value, &__value, &__ret, |
| 672 |
__gcc_atomic::__to_gcc_order(__order)); |
| 673 |
return __ret; |
| 674 |
} |
| 675 |
|
| 676 |
template <typename _Tp> |
| 677 |
static inline _Tp __c11_atomic_exchange(_Atomic(_Tp)* __a, _Tp __value, |
| 678 |
memory_order __order) {
|
| 679 |
_Tp __ret; |
| 680 |
__atomic_exchange(&__a->__a_value, &__value, &__ret, |
| 681 |
__gcc_atomic::__to_gcc_order(__order)); |
| 682 |
return __ret; |
| 683 |
} |
| 684 |
|
| 685 |
template <typename _Tp> |
| 686 |
static inline bool __c11_atomic_compare_exchange_strong( |
| 687 |
volatile _Atomic(_Tp)* __a, _Tp* __expected, _Tp __value, |
| 688 |
memory_order __success, memory_order __failure) {
|
| 689 |
return __atomic_compare_exchange(&__a->__a_value, __expected, &__value, |
| 690 |
false, |
| 691 |
__gcc_atomic::__to_gcc_order(__success), |
| 692 |
__gcc_atomic::__to_gcc_failure_order(__failure)); |
| 693 |
} |
| 694 |
|
| 695 |
template <typename _Tp> |
| 696 |
static inline bool __c11_atomic_compare_exchange_strong( |
| 697 |
_Atomic(_Tp)* __a, _Tp* __expected, _Tp __value, memory_order __success, |
| 698 |
memory_order __failure) {
|
| 699 |
return __atomic_compare_exchange(&__a->__a_value, __expected, &__value, |
| 700 |
false, |
| 701 |
__gcc_atomic::__to_gcc_order(__success), |
| 702 |
__gcc_atomic::__to_gcc_failure_order(__failure)); |
| 703 |
} |
| 704 |
|
| 705 |
template <typename _Tp> |
| 706 |
static inline bool __c11_atomic_compare_exchange_weak( |
| 707 |
volatile _Atomic(_Tp)* __a, _Tp* __expected, _Tp __value, |
| 708 |
memory_order __success, memory_order __failure) {
|
| 709 |
return __atomic_compare_exchange(&__a->__a_value, __expected, &__value, |
| 710 |
true, |
| 711 |
__gcc_atomic::__to_gcc_order(__success), |
| 712 |
__gcc_atomic::__to_gcc_failure_order(__failure)); |
| 713 |
} |
| 714 |
|
| 715 |
template <typename _Tp> |
| 716 |
static inline bool __c11_atomic_compare_exchange_weak( |
| 717 |
_Atomic(_Tp)* __a, _Tp* __expected, _Tp __value, memory_order __success, |
| 718 |
memory_order __failure) {
|
| 719 |
return __atomic_compare_exchange(&__a->__a_value, __expected, &__value, |
| 720 |
true, |
| 721 |
__gcc_atomic::__to_gcc_order(__success), |
| 722 |
__gcc_atomic::__to_gcc_failure_order(__failure)); |
| 723 |
} |
| 724 |
|
| 725 |
template <typename _Tp> |
| 726 |
struct __skip_amt { enum {value = 1}; };
|
| 727 |
|
| 728 |
template <typename _Tp> |
| 729 |
struct __skip_amt<_Tp*> { enum {value = sizeof(_Tp)}; };
|
| 730 |
|
| 731 |
// FIXME: Haven't figured out what the spec says about using arrays with |
| 732 |
// atomic_fetch_add. Force a failure rather than creating bad behavior. |
| 733 |
template <typename _Tp> |
| 734 |
struct __skip_amt<_Tp[]> { };
|
| 735 |
template <typename _Tp, int n> |
| 736 |
struct __skip_amt<_Tp[n]> { };
|
| 737 |
|
| 738 |
template <typename _Tp, typename _Td> |
| 739 |
static inline _Tp __c11_atomic_fetch_add(volatile _Atomic(_Tp)* __a, |
| 740 |
_Td __delta, memory_order __order) {
|
| 741 |
return __atomic_fetch_add(&__a->__a_value, __delta * __skip_amt<_Tp>::value, |
| 742 |
__gcc_atomic::__to_gcc_order(__order)); |
| 743 |
} |
| 744 |
|
| 745 |
template <typename _Tp, typename _Td> |
| 746 |
static inline _Tp __c11_atomic_fetch_add(_Atomic(_Tp)* __a, _Td __delta, |
| 747 |
memory_order __order) {
|
| 748 |
return __atomic_fetch_add(&__a->__a_value, __delta * __skip_amt<_Tp>::value, |
| 749 |
__gcc_atomic::__to_gcc_order(__order)); |
| 750 |
} |
| 751 |
|
| 752 |
template <typename _Tp, typename _Td> |
| 753 |
static inline _Tp __c11_atomic_fetch_sub(volatile _Atomic(_Tp)* __a, |
| 754 |
_Td __delta, memory_order __order) {
|
| 755 |
return __atomic_fetch_sub(&__a->__a_value, __delta * __skip_amt<_Tp>::value, |
| 756 |
__gcc_atomic::__to_gcc_order(__order)); |
| 757 |
} |
| 758 |
|
| 759 |
template <typename _Tp, typename _Td> |
| 760 |
static inline _Tp __c11_atomic_fetch_sub(_Atomic(_Tp)* __a, _Td __delta, |
| 761 |
memory_order __order) {
|
| 762 |
return __atomic_fetch_sub(&__a->__a_value, __delta * __skip_amt<_Tp>::value, |
| 763 |
__gcc_atomic::__to_gcc_order(__order)); |
| 764 |
} |
| 765 |
|
| 766 |
template <typename _Tp> |
| 767 |
static inline _Tp __c11_atomic_fetch_and(volatile _Atomic(_Tp)* __a, |
| 768 |
_Tp __pattern, memory_order __order) {
|
| 769 |
return __atomic_fetch_and(&__a->__a_value, __pattern, |
| 770 |
__gcc_atomic::__to_gcc_order(__order)); |
| 771 |
} |
| 772 |
|
| 773 |
template <typename _Tp> |
| 774 |
static inline _Tp __c11_atomic_fetch_and(_Atomic(_Tp)* __a, |
| 775 |
_Tp __pattern, memory_order __order) {
|
| 776 |
return __atomic_fetch_and(&__a->__a_value, __pattern, |
| 777 |
__gcc_atomic::__to_gcc_order(__order)); |
| 778 |
} |
| 779 |
|
| 780 |
template <typename _Tp> |
| 781 |
static inline _Tp __c11_atomic_fetch_or(volatile _Atomic(_Tp)* __a, |
| 782 |
_Tp __pattern, memory_order __order) {
|
| 783 |
return __atomic_fetch_or(&__a->__a_value, __pattern, |
| 784 |
__gcc_atomic::__to_gcc_order(__order)); |
| 785 |
} |
| 786 |
|
| 787 |
template <typename _Tp> |
| 788 |
static inline _Tp __c11_atomic_fetch_or(_Atomic(_Tp)* __a, _Tp __pattern, |
| 789 |
memory_order __order) {
|
| 790 |
return __atomic_fetch_or(&__a->__a_value, __pattern, |
| 791 |
__gcc_atomic::__to_gcc_order(__order)); |
| 792 |
} |
| 793 |
|
| 794 |
template <typename _Tp> |
| 795 |
static inline _Tp __c11_atomic_fetch_xor(volatile _Atomic(_Tp)* __a, |
| 796 |
_Tp __pattern, memory_order __order) {
|
| 797 |
return __atomic_fetch_xor(&__a->__a_value, __pattern, |
| 798 |
__gcc_atomic::__to_gcc_order(__order)); |
| 799 |
} |
| 800 |
|
| 801 |
template <typename _Tp> |
| 802 |
static inline _Tp __c11_atomic_fetch_xor(_Atomic(_Tp)* __a, _Tp __pattern, |
| 803 |
memory_order __order) {
|
| 804 |
return __atomic_fetch_xor(&__a->__a_value, __pattern, |
| 805 |
__gcc_atomic::__to_gcc_order(__order)); |
| 806 |
} |
| 807 |
#endif // _LIBCPP_HAS_GCC_ATOMIC_IMP |
| 808 |
|
| 809 |
template <class _Tp> |
| 810 |
inline _LIBCPP_INLINE_VISIBILITY |
| 811 |
_Tp |
| 812 |
kill_dependency(_Tp __y) _NOEXCEPT |
| 813 |
{
|
| 814 |
return __y; |
| 815 |
} |
| 816 |
|
| 817 |
// general atomic<T> |
| 818 |
|
| 819 |
template <class _Tp, bool = is_integral<_Tp>::value && !is_same<_Tp, bool>::value> |
| 820 |
struct __atomic_base // false |
| 821 |
{
|
| 822 |
mutable _Atomic(_Tp) __a_; |
| 823 |
|
| 824 |
_LIBCPP_INLINE_VISIBILITY |
| 825 |
bool is_lock_free() const volatile _NOEXCEPT |
| 826 |
{
|
| 827 |
#if defined(_LIBCPP_HAS_C_ATOMIC_IMP) |
| 828 |
return __c11_atomic_is_lock_free(sizeof(_Tp)); |
| 829 |
#else |
| 830 |
return __atomic_is_lock_free(sizeof(_Tp), 0); |
| 831 |
#endif |
| 832 |
} |
| 833 |
_LIBCPP_INLINE_VISIBILITY |
| 834 |
bool is_lock_free() const _NOEXCEPT |
| 835 |
{return static_cast<__atomic_base const volatile*>(this)->is_lock_free();}
|
| 836 |
_LIBCPP_INLINE_VISIBILITY |
| 837 |
void store(_Tp __d, memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT |
| 838 |
{__c11_atomic_store(&__a_, __d, __m);}
|
| 839 |
_LIBCPP_INLINE_VISIBILITY |
| 840 |
void store(_Tp __d, memory_order __m = memory_order_seq_cst) _NOEXCEPT |
| 841 |
{__c11_atomic_store(&__a_, __d, __m);}
|
| 842 |
_LIBCPP_INLINE_VISIBILITY |
| 843 |
_Tp load(memory_order __m = memory_order_seq_cst) const volatile _NOEXCEPT |
| 844 |
{return __c11_atomic_load(&__a_, __m);}
|
| 845 |
_LIBCPP_INLINE_VISIBILITY |
| 846 |
_Tp load(memory_order __m = memory_order_seq_cst) const _NOEXCEPT |
| 847 |
{return __c11_atomic_load(&__a_, __m);}
|
| 848 |
_LIBCPP_INLINE_VISIBILITY |
| 849 |
operator _Tp() const volatile _NOEXCEPT {return load();}
|
| 850 |
_LIBCPP_INLINE_VISIBILITY |
| 851 |
operator _Tp() const _NOEXCEPT {return load();}
|
| 852 |
_LIBCPP_INLINE_VISIBILITY |
| 853 |
_Tp exchange(_Tp __d, memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT |
| 854 |
{return __c11_atomic_exchange(&__a_, __d, __m);}
|
| 855 |
_LIBCPP_INLINE_VISIBILITY |
| 856 |
_Tp exchange(_Tp __d, memory_order __m = memory_order_seq_cst) _NOEXCEPT |
| 857 |
{return __c11_atomic_exchange(&__a_, __d, __m);}
|
| 858 |
_LIBCPP_INLINE_VISIBILITY |
| 859 |
bool compare_exchange_weak(_Tp& __e, _Tp __d, |
| 860 |
memory_order __s, memory_order __f) volatile _NOEXCEPT |
| 861 |
{return __c11_atomic_compare_exchange_weak(&__a_, &__e, __d, __s, __f);}
|
| 862 |
_LIBCPP_INLINE_VISIBILITY |
| 863 |
bool compare_exchange_weak(_Tp& __e, _Tp __d, |
| 864 |
memory_order __s, memory_order __f) _NOEXCEPT |
| 865 |
{return __c11_atomic_compare_exchange_weak(&__a_, &__e, __d, __s, __f);}
|
| 866 |
_LIBCPP_INLINE_VISIBILITY |
| 867 |
bool compare_exchange_strong(_Tp& __e, _Tp __d, |
| 868 |
memory_order __s, memory_order __f) volatile _NOEXCEPT |
| 869 |
{return __c11_atomic_compare_exchange_strong(&__a_, &__e, __d, __s, __f);}
|
| 870 |
_LIBCPP_INLINE_VISIBILITY |
| 871 |
bool compare_exchange_strong(_Tp& __e, _Tp __d, |
| 872 |
memory_order __s, memory_order __f) _NOEXCEPT |
| 873 |
{return __c11_atomic_compare_exchange_strong(&__a_, &__e, __d, __s, __f);}
|
| 874 |
_LIBCPP_INLINE_VISIBILITY |
| 875 |
bool compare_exchange_weak(_Tp& __e, _Tp __d, |
| 876 |
memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT |
| 877 |
{return __c11_atomic_compare_exchange_weak(&__a_, &__e, __d, __m, __m);}
|
| 878 |
_LIBCPP_INLINE_VISIBILITY |
| 879 |
bool compare_exchange_weak(_Tp& __e, _Tp __d, |
| 880 |
memory_order __m = memory_order_seq_cst) _NOEXCEPT |
| 881 |
{return __c11_atomic_compare_exchange_weak(&__a_, &__e, __d, __m, __m);}
|
| 882 |
_LIBCPP_INLINE_VISIBILITY |
| 883 |
bool compare_exchange_strong(_Tp& __e, _Tp __d, |
| 884 |
memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT |
| 885 |
{return __c11_atomic_compare_exchange_strong(&__a_, &__e, __d, __m, __m);}
|
| 886 |
_LIBCPP_INLINE_VISIBILITY |
| 887 |
bool compare_exchange_strong(_Tp& __e, _Tp __d, |
| 888 |
memory_order __m = memory_order_seq_cst) _NOEXCEPT |
| 889 |
{return __c11_atomic_compare_exchange_strong(&__a_, &__e, __d, __m, __m);}
|
| 890 |
|
| 891 |
_LIBCPP_INLINE_VISIBILITY |
| 892 |
#ifndef _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS |
| 893 |
__atomic_base() _NOEXCEPT = default; |
| 894 |
#else |
| 895 |
__atomic_base() _NOEXCEPT : __a_() {}
|
| 896 |
#endif // _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS |
| 897 |
|
| 898 |
_LIBCPP_INLINE_VISIBILITY |
| 899 |
_LIBCPP_CONSTEXPR __atomic_base(_Tp __d) _NOEXCEPT : __a_(__d) {}
|
| 900 |
#ifndef _LIBCPP_HAS_NO_DELETED_FUNCTIONS |
| 901 |
__atomic_base(const __atomic_base&) = delete; |
| 902 |
__atomic_base& operator=(const __atomic_base&) = delete; |
| 903 |
__atomic_base& operator=(const __atomic_base&) volatile = delete; |
| 904 |
#else // _LIBCPP_HAS_NO_DELETED_FUNCTIONS |
| 905 |
private: |
| 906 |
__atomic_base(const __atomic_base&); |
| 907 |
__atomic_base& operator=(const __atomic_base&); |
| 908 |
__atomic_base& operator=(const __atomic_base&) volatile; |
| 909 |
#endif // _LIBCPP_HAS_NO_DELETED_FUNCTIONS |
| 910 |
}; |
| 911 |
|
| 912 |
// atomic<Integral> |
| 913 |
|
| 914 |
template <class _Tp> |
| 915 |
struct __atomic_base<_Tp, true> |
| 916 |
: public __atomic_base<_Tp, false> |
| 917 |
{
|
| 918 |
typedef __atomic_base<_Tp, false> __base; |
| 919 |
_LIBCPP_INLINE_VISIBILITY |
| 920 |
__atomic_base() _NOEXCEPT _LIBCPP_DEFAULT |
| 921 |
_LIBCPP_INLINE_VISIBILITY |
| 922 |
_LIBCPP_CONSTEXPR __atomic_base(_Tp __d) _NOEXCEPT : __base(__d) {}
|
| 923 |
|
| 924 |
_LIBCPP_INLINE_VISIBILITY |
| 925 |
_Tp fetch_add(_Tp __op, memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT |
| 926 |
{return __c11_atomic_fetch_add(&this->__a_, __op, __m);}
|
| 927 |
_LIBCPP_INLINE_VISIBILITY |
| 928 |
_Tp fetch_add(_Tp __op, memory_order __m = memory_order_seq_cst) _NOEXCEPT |
| 929 |
{return __c11_atomic_fetch_add(&this->__a_, __op, __m);}
|
| 930 |
_LIBCPP_INLINE_VISIBILITY |
| 931 |
_Tp fetch_sub(_Tp __op, memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT |
| 932 |
{return __c11_atomic_fetch_sub(&this->__a_, __op, __m);}
|
| 933 |
_LIBCPP_INLINE_VISIBILITY |
| 934 |
_Tp fetch_sub(_Tp __op, memory_order __m = memory_order_seq_cst) _NOEXCEPT |
| 935 |
{return __c11_atomic_fetch_sub(&this->__a_, __op, __m);}
|
| 936 |
_LIBCPP_INLINE_VISIBILITY |
| 937 |
_Tp fetch_and(_Tp __op, memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT |
| 938 |
{return __c11_atomic_fetch_and(&this->__a_, __op, __m);}
|
| 939 |
_LIBCPP_INLINE_VISIBILITY |
| 940 |
_Tp fetch_and(_Tp __op, memory_order __m = memory_order_seq_cst) _NOEXCEPT |
| 941 |
{return __c11_atomic_fetch_and(&this->__a_, __op, __m);}
|
| 942 |
_LIBCPP_INLINE_VISIBILITY |
| 943 |
_Tp fetch_or(_Tp __op, memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT |
| 944 |
{return __c11_atomic_fetch_or(&this->__a_, __op, __m);}
|
| 945 |
_LIBCPP_INLINE_VISIBILITY |
| 946 |
_Tp fetch_or(_Tp __op, memory_order __m = memory_order_seq_cst) _NOEXCEPT |
| 947 |
{return __c11_atomic_fetch_or(&this->__a_, __op, __m);}
|
| 948 |
_LIBCPP_INLINE_VISIBILITY |
| 949 |
_Tp fetch_xor(_Tp __op, memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT |
| 950 |
{return __c11_atomic_fetch_xor(&this->__a_, __op, __m);}
|
| 951 |
_LIBCPP_INLINE_VISIBILITY |
| 952 |
_Tp fetch_xor(_Tp __op, memory_order __m = memory_order_seq_cst) _NOEXCEPT |
| 953 |
{return __c11_atomic_fetch_xor(&this->__a_, __op, __m);}
|
| 954 |
|
| 955 |
_LIBCPP_INLINE_VISIBILITY |
| 956 |
_Tp operator++(int) volatile _NOEXCEPT {return fetch_add(_Tp(1));}
|
| 957 |
_LIBCPP_INLINE_VISIBILITY |
| 958 |
_Tp operator++(int) _NOEXCEPT {return fetch_add(_Tp(1));}
|
| 959 |
_LIBCPP_INLINE_VISIBILITY |
| 960 |
_Tp operator--(int) volatile _NOEXCEPT {return fetch_sub(_Tp(1));}
|
| 961 |
_LIBCPP_INLINE_VISIBILITY |
| 962 |
_Tp operator--(int) _NOEXCEPT {return fetch_sub(_Tp(1));}
|
| 963 |
_LIBCPP_INLINE_VISIBILITY |
| 964 |
_Tp operator++() volatile _NOEXCEPT {return fetch_add(_Tp(1)) + _Tp(1);}
|
| 965 |
_LIBCPP_INLINE_VISIBILITY |
| 966 |
_Tp operator++() _NOEXCEPT {return fetch_add(_Tp(1)) + _Tp(1);}
|
| 967 |
_LIBCPP_INLINE_VISIBILITY |
| 968 |
_Tp operator--() volatile _NOEXCEPT {return fetch_sub(_Tp(1)) - _Tp(1);}
|
| 969 |
_LIBCPP_INLINE_VISIBILITY |
| 970 |
_Tp operator--() _NOEXCEPT {return fetch_sub(_Tp(1)) - _Tp(1);}
|
| 971 |
_LIBCPP_INLINE_VISIBILITY |
| 972 |
_Tp operator+=(_Tp __op) volatile _NOEXCEPT {return fetch_add(__op) + __op;}
|
| 973 |
_LIBCPP_INLINE_VISIBILITY |
| 974 |
_Tp operator+=(_Tp __op) _NOEXCEPT {return fetch_add(__op) + __op;}
|
| 975 |
_LIBCPP_INLINE_VISIBILITY |
| 976 |
_Tp operator-=(_Tp __op) volatile _NOEXCEPT {return fetch_sub(__op) - __op;}
|
| 977 |
_LIBCPP_INLINE_VISIBILITY |
| 978 |
_Tp operator-=(_Tp __op) _NOEXCEPT {return fetch_sub(__op) - __op;}
|
| 979 |
_LIBCPP_INLINE_VISIBILITY |
| 980 |
_Tp operator&=(_Tp __op) volatile _NOEXCEPT {return fetch_and(__op) & __op;}
|
| 981 |
_LIBCPP_INLINE_VISIBILITY |
| 982 |
_Tp operator&=(_Tp __op) _NOEXCEPT {return fetch_and(__op) & __op;}
|
| 983 |
_LIBCPP_INLINE_VISIBILITY |
| 984 |
_Tp operator|=(_Tp __op) volatile _NOEXCEPT {return fetch_or(__op) | __op;}
|
| 985 |
_LIBCPP_INLINE_VISIBILITY |
| 986 |
_Tp operator|=(_Tp __op) _NOEXCEPT {return fetch_or(__op) | __op;}
|
| 987 |
_LIBCPP_INLINE_VISIBILITY |
| 988 |
_Tp operator^=(_Tp __op) volatile _NOEXCEPT {return fetch_xor(__op) ^ __op;}
|
| 989 |
_LIBCPP_INLINE_VISIBILITY |
| 990 |
_Tp operator^=(_Tp __op) _NOEXCEPT {return fetch_xor(__op) ^ __op;}
|
| 991 |
}; |
| 992 |
|
| 993 |
// atomic<T> |
| 994 |
|
| 995 |
template <class _Tp> |
| 996 |
struct atomic |
| 997 |
: public __atomic_base<_Tp> |
| 998 |
{
|
| 999 |
typedef __atomic_base<_Tp> __base; |
| 1000 |
_LIBCPP_INLINE_VISIBILITY |
| 1001 |
atomic() _NOEXCEPT _LIBCPP_DEFAULT |
| 1002 |
_LIBCPP_INLINE_VISIBILITY |
| 1003 |
_LIBCPP_CONSTEXPR atomic(_Tp __d) _NOEXCEPT : __base(__d) {}
|
| 1004 |
|
| 1005 |
_LIBCPP_INLINE_VISIBILITY |
| 1006 |
_Tp operator=(_Tp __d) volatile _NOEXCEPT |
| 1007 |
{__base::store(__d); return __d;}
|
| 1008 |
_LIBCPP_INLINE_VISIBILITY |
| 1009 |
_Tp operator=(_Tp __d) _NOEXCEPT |
| 1010 |
{__base::store(__d); return __d;}
|
| 1011 |
}; |
| 1012 |
|
| 1013 |
// atomic<T*> |
| 1014 |
|
| 1015 |
template <class _Tp> |
| 1016 |
struct atomic<_Tp*> |
| 1017 |
: public __atomic_base<_Tp*> |
| 1018 |
{
|
| 1019 |
typedef __atomic_base<_Tp*> __base; |
| 1020 |
_LIBCPP_INLINE_VISIBILITY |
| 1021 |
atomic() _NOEXCEPT _LIBCPP_DEFAULT |
| 1022 |
_LIBCPP_INLINE_VISIBILITY |
| 1023 |
_LIBCPP_CONSTEXPR atomic(_Tp* __d) _NOEXCEPT : __base(__d) {}
|
| 1024 |
|
| 1025 |
_LIBCPP_INLINE_VISIBILITY |
| 1026 |
_Tp* operator=(_Tp* __d) volatile _NOEXCEPT |
| 1027 |
{__base::store(__d); return __d;}
|
| 1028 |
_LIBCPP_INLINE_VISIBILITY |
| 1029 |
_Tp* operator=(_Tp* __d) _NOEXCEPT |
| 1030 |
{__base::store(__d); return __d;}
|
| 1031 |
|
| 1032 |
_LIBCPP_INLINE_VISIBILITY |
| 1033 |
_Tp* fetch_add(ptrdiff_t __op, memory_order __m = memory_order_seq_cst) |
| 1034 |
volatile _NOEXCEPT |
| 1035 |
{return __c11_atomic_fetch_add(&this->__a_, __op, __m);}
|
| 1036 |
_LIBCPP_INLINE_VISIBILITY |
| 1037 |
_Tp* fetch_add(ptrdiff_t __op, memory_order __m = memory_order_seq_cst) _NOEXCEPT |
| 1038 |
{return __c11_atomic_fetch_add(&this->__a_, __op, __m);}
|
| 1039 |
_LIBCPP_INLINE_VISIBILITY |
| 1040 |
_Tp* fetch_sub(ptrdiff_t __op, memory_order __m = memory_order_seq_cst) |
| 1041 |
volatile _NOEXCEPT |
| 1042 |
{return __c11_atomic_fetch_sub(&this->__a_, __op, __m);}
|
| 1043 |
_LIBCPP_INLINE_VISIBILITY |
| 1044 |
_Tp* fetch_sub(ptrdiff_t __op, memory_order __m = memory_order_seq_cst) _NOEXCEPT |
| 1045 |
{return __c11_atomic_fetch_sub(&this->__a_, __op, __m);}
|
| 1046 |
|
| 1047 |
_LIBCPP_INLINE_VISIBILITY |
| 1048 |
_Tp* operator++(int) volatile _NOEXCEPT {return fetch_add(1);}
|
| 1049 |
_LIBCPP_INLINE_VISIBILITY |
| 1050 |
_Tp* operator++(int) _NOEXCEPT {return fetch_add(1);}
|
| 1051 |
_LIBCPP_INLINE_VISIBILITY |
| 1052 |
_Tp* operator--(int) volatile _NOEXCEPT {return fetch_sub(1);}
|
| 1053 |
_LIBCPP_INLINE_VISIBILITY |
| 1054 |
_Tp* operator--(int) _NOEXCEPT {return fetch_sub(1);}
|
| 1055 |
_LIBCPP_INLINE_VISIBILITY |
| 1056 |
_Tp* operator++() volatile _NOEXCEPT {return fetch_add(1) + 1;}
|
| 1057 |
_LIBCPP_INLINE_VISIBILITY |
| 1058 |
_Tp* operator++() _NOEXCEPT {return fetch_add(1) + 1;}
|
| 1059 |
_LIBCPP_INLINE_VISIBILITY |
| 1060 |
_Tp* operator--() volatile _NOEXCEPT {return fetch_sub(1) - 1;}
|
| 1061 |
_LIBCPP_INLINE_VISIBILITY |
| 1062 |
_Tp* operator--() _NOEXCEPT {return fetch_sub(1) - 1;}
|
| 1063 |
_LIBCPP_INLINE_VISIBILITY |
| 1064 |
_Tp* operator+=(ptrdiff_t __op) volatile _NOEXCEPT {return fetch_add(__op) + __op;}
|
| 1065 |
_LIBCPP_INLINE_VISIBILITY |
| 1066 |
_Tp* operator+=(ptrdiff_t __op) _NOEXCEPT {return fetch_add(__op) + __op;}
|
| 1067 |
_LIBCPP_INLINE_VISIBILITY |
| 1068 |
_Tp* operator-=(ptrdiff_t __op) volatile _NOEXCEPT {return fetch_sub(__op) - __op;}
|
| 1069 |
_LIBCPP_INLINE_VISIBILITY |
| 1070 |
_Tp* operator-=(ptrdiff_t __op) _NOEXCEPT {return fetch_sub(__op) - __op;}
|
| 1071 |
}; |
| 1072 |
|
| 1073 |
// atomic_is_lock_free |
| 1074 |
|
| 1075 |
template <class _Tp> |
| 1076 |
inline _LIBCPP_INLINE_VISIBILITY |
| 1077 |
bool |
| 1078 |
atomic_is_lock_free(const volatile atomic<_Tp>* __o) _NOEXCEPT |
| 1079 |
{
|
| 1080 |
return __o->is_lock_free(); |
| 1081 |
} |
| 1082 |
|
| 1083 |
template <class _Tp> |
| 1084 |
inline _LIBCPP_INLINE_VISIBILITY |
| 1085 |
bool |
| 1086 |
atomic_is_lock_free(const atomic<_Tp>* __o) _NOEXCEPT |
| 1087 |
{
|
| 1088 |
return __o->is_lock_free(); |
| 1089 |
} |
| 1090 |
|
| 1091 |
// atomic_init |
| 1092 |
|
| 1093 |
template <class _Tp> |
| 1094 |
inline _LIBCPP_INLINE_VISIBILITY |
| 1095 |
void |
| 1096 |
atomic_init(volatile atomic<_Tp>* __o, _Tp __d) _NOEXCEPT |
| 1097 |
{
|
| 1098 |
__c11_atomic_init(&__o->__a_, __d); |
| 1099 |
} |
| 1100 |
|
| 1101 |
template <class _Tp> |
| 1102 |
inline _LIBCPP_INLINE_VISIBILITY |
| 1103 |
void |
| 1104 |
atomic_init(atomic<_Tp>* __o, _Tp __d) _NOEXCEPT |
| 1105 |
{
|
| 1106 |
__c11_atomic_init(&__o->__a_, __d); |
| 1107 |
} |
| 1108 |
|
| 1109 |
// atomic_store |
| 1110 |
|
| 1111 |
template <class _Tp> |
| 1112 |
inline _LIBCPP_INLINE_VISIBILITY |
| 1113 |
void |
| 1114 |
atomic_store(volatile atomic<_Tp>* __o, _Tp __d) _NOEXCEPT |
| 1115 |
{
|
| 1116 |
__o->store(__d); |
| 1117 |
} |
| 1118 |
|
| 1119 |
template <class _Tp> |
| 1120 |
inline _LIBCPP_INLINE_VISIBILITY |
| 1121 |
void |
| 1122 |
atomic_store(atomic<_Tp>* __o, _Tp __d) _NOEXCEPT |
| 1123 |
{
|
| 1124 |
__o->store(__d); |
| 1125 |
} |
| 1126 |
|
| 1127 |
// atomic_store_explicit |
| 1128 |
|
| 1129 |
template <class _Tp> |
| 1130 |
inline _LIBCPP_INLINE_VISIBILITY |
| 1131 |
void |
| 1132 |
atomic_store_explicit(volatile atomic<_Tp>* __o, _Tp __d, memory_order __m) _NOEXCEPT |
| 1133 |
{
|
| 1134 |
__o->store(__d, __m); |
| 1135 |
} |
| 1136 |
|
| 1137 |
template <class _Tp> |
| 1138 |
inline _LIBCPP_INLINE_VISIBILITY |
| 1139 |
void |
| 1140 |
atomic_store_explicit(atomic<_Tp>* __o, _Tp __d, memory_order __m) _NOEXCEPT |
| 1141 |
{
|
| 1142 |
__o->store(__d, __m); |
| 1143 |
} |
| 1144 |
|
| 1145 |
// atomic_load |
| 1146 |
|
| 1147 |
template <class _Tp> |
| 1148 |
inline _LIBCPP_INLINE_VISIBILITY |
| 1149 |
_Tp |
| 1150 |
atomic_load(const volatile atomic<_Tp>* __o) _NOEXCEPT |
| 1151 |
{
|
| 1152 |
return __o->load(); |
| 1153 |
} |
| 1154 |
|
| 1155 |
template <class _Tp> |
| 1156 |
inline _LIBCPP_INLINE_VISIBILITY |
| 1157 |
_Tp |
| 1158 |
atomic_load(const atomic<_Tp>* __o) _NOEXCEPT |
| 1159 |
{
|
| 1160 |
return __o->load(); |
| 1161 |
} |
| 1162 |
|
| 1163 |
// atomic_load_explicit |
| 1164 |
|
| 1165 |
template <class _Tp> |
| 1166 |
inline _LIBCPP_INLINE_VISIBILITY |
| 1167 |
_Tp |
| 1168 |
atomic_load_explicit(const volatile atomic<_Tp>* __o, memory_order __m) _NOEXCEPT |
| 1169 |
{
|
| 1170 |
return __o->load(__m); |
| 1171 |
} |
| 1172 |
|
| 1173 |
template <class _Tp> |
| 1174 |
inline _LIBCPP_INLINE_VISIBILITY |
| 1175 |
_Tp |
| 1176 |
atomic_load_explicit(const atomic<_Tp>* __o, memory_order __m) _NOEXCEPT |
| 1177 |
{
|
| 1178 |
return __o->load(__m); |
| 1179 |
} |
| 1180 |
|
| 1181 |
// atomic_exchange |
| 1182 |
|
| 1183 |
template <class _Tp> |
| 1184 |
inline _LIBCPP_INLINE_VISIBILITY |
| 1185 |
_Tp |
| 1186 |
atomic_exchange(volatile atomic<_Tp>* __o, _Tp __d) _NOEXCEPT |
| 1187 |
{
|
| 1188 |
return __o->exchange(__d); |
| 1189 |
} |
| 1190 |
|
| 1191 |
template <class _Tp> |
| 1192 |
inline _LIBCPP_INLINE_VISIBILITY |
| 1193 |
_Tp |
| 1194 |
atomic_exchange(atomic<_Tp>* __o, _Tp __d) _NOEXCEPT |
| 1195 |
{
|
| 1196 |
return __o->exchange(__d); |
| 1197 |
} |
| 1198 |
|
| 1199 |
// atomic_exchange_explicit |
| 1200 |
|
| 1201 |
template <class _Tp> |
| 1202 |
inline _LIBCPP_INLINE_VISIBILITY |
| 1203 |
_Tp |
| 1204 |
atomic_exchange_explicit(volatile atomic<_Tp>* __o, _Tp __d, memory_order __m) _NOEXCEPT |
| 1205 |
{
|
| 1206 |
return __o->exchange(__d, __m); |
| 1207 |
} |
| 1208 |
|
| 1209 |
template <class _Tp> |
| 1210 |
inline _LIBCPP_INLINE_VISIBILITY |
| 1211 |
_Tp |
| 1212 |
atomic_exchange_explicit(atomic<_Tp>* __o, _Tp __d, memory_order __m) _NOEXCEPT |
| 1213 |
{
|
| 1214 |
return __o->exchange(__d, __m); |
| 1215 |
} |
| 1216 |
|
| 1217 |
// atomic_compare_exchange_weak |
| 1218 |
|
| 1219 |
template <class _Tp> |
| 1220 |
inline _LIBCPP_INLINE_VISIBILITY |
| 1221 |
bool |
| 1222 |
atomic_compare_exchange_weak(volatile atomic<_Tp>* __o, _Tp* __e, _Tp __d) _NOEXCEPT |
| 1223 |
{
|
| 1224 |
return __o->compare_exchange_weak(*__e, __d); |
| 1225 |
} |
| 1226 |
|
| 1227 |
template <class _Tp> |
| 1228 |
inline _LIBCPP_INLINE_VISIBILITY |
| 1229 |
bool |
| 1230 |
atomic_compare_exchange_weak(atomic<_Tp>* __o, _Tp* __e, _Tp __d) _NOEXCEPT |
| 1231 |
{
|
| 1232 |
return __o->compare_exchange_weak(*__e, __d); |
| 1233 |
} |
| 1234 |
|
| 1235 |
// atomic_compare_exchange_strong |
| 1236 |
|
| 1237 |
template <class _Tp> |
| 1238 |
inline _LIBCPP_INLINE_VISIBILITY |
| 1239 |
bool |
| 1240 |
atomic_compare_exchange_strong(volatile atomic<_Tp>* __o, _Tp* __e, _Tp __d) _NOEXCEPT |
| 1241 |
{
|
| 1242 |
return __o->compare_exchange_strong(*__e, __d); |
| 1243 |
} |
| 1244 |
|
| 1245 |
template <class _Tp> |
| 1246 |
inline _LIBCPP_INLINE_VISIBILITY |
| 1247 |
bool |
| 1248 |
atomic_compare_exchange_strong(atomic<_Tp>* __o, _Tp* __e, _Tp __d) _NOEXCEPT |
| 1249 |
{
|
| 1250 |
return __o->compare_exchange_strong(*__e, __d); |
| 1251 |
} |
| 1252 |
|
| 1253 |
// atomic_compare_exchange_weak_explicit |
| 1254 |
|
| 1255 |
template <class _Tp> |
| 1256 |
inline _LIBCPP_INLINE_VISIBILITY |
| 1257 |
bool |
| 1258 |
atomic_compare_exchange_weak_explicit(volatile atomic<_Tp>* __o, _Tp* __e, |
| 1259 |
_Tp __d, |
| 1260 |
memory_order __s, memory_order __f) _NOEXCEPT |
| 1261 |
{
|
| 1262 |
return __o->compare_exchange_weak(*__e, __d, __s, __f); |
| 1263 |
} |
| 1264 |
|
| 1265 |
template <class _Tp> |
| 1266 |
inline _LIBCPP_INLINE_VISIBILITY |
| 1267 |
bool |
| 1268 |
atomic_compare_exchange_weak_explicit(atomic<_Tp>* __o, _Tp* __e, _Tp __d, |
| 1269 |
memory_order __s, memory_order __f) _NOEXCEPT |
| 1270 |
{
|
| 1271 |
return __o->compare_exchange_weak(*__e, __d, __s, __f); |
| 1272 |
} |
| 1273 |
|
| 1274 |
// atomic_compare_exchange_strong_explicit |
| 1275 |
|
| 1276 |
template <class _Tp> |
| 1277 |
inline _LIBCPP_INLINE_VISIBILITY |
| 1278 |
bool |
| 1279 |
atomic_compare_exchange_strong_explicit(volatile atomic<_Tp>* __o, |
| 1280 |
_Tp* __e, _Tp __d, |
| 1281 |
memory_order __s, memory_order __f) _NOEXCEPT |
| 1282 |
{
|
| 1283 |
return __o->compare_exchange_strong(*__e, __d, __s, __f); |
| 1284 |
} |
| 1285 |
|
| 1286 |
template <class _Tp> |
| 1287 |
inline _LIBCPP_INLINE_VISIBILITY |
| 1288 |
bool |
| 1289 |
atomic_compare_exchange_strong_explicit(atomic<_Tp>* __o, _Tp* __e, |
| 1290 |
_Tp __d, |
| 1291 |
memory_order __s, memory_order __f) _NOEXCEPT |
| 1292 |
{
|
| 1293 |
return __o->compare_exchange_strong(*__e, __d, __s, __f); |
| 1294 |
} |
| 1295 |
|
| 1296 |
// atomic_fetch_add |
| 1297 |
|
| 1298 |
template <class _Tp> |
| 1299 |
inline _LIBCPP_INLINE_VISIBILITY |
| 1300 |
typename enable_if |
| 1301 |
< |
| 1302 |
is_integral<_Tp>::value && !is_same<_Tp, bool>::value, |
| 1303 |
_Tp |
| 1304 |
>::type |
| 1305 |
atomic_fetch_add(volatile atomic<_Tp>* __o, _Tp __op) _NOEXCEPT |
| 1306 |
{
|
| 1307 |
return __o->fetch_add(__op); |
| 1308 |
} |
| 1309 |
|
| 1310 |
template <class _Tp> |
| 1311 |
inline _LIBCPP_INLINE_VISIBILITY |
| 1312 |
typename enable_if |
| 1313 |
< |
| 1314 |
is_integral<_Tp>::value && !is_same<_Tp, bool>::value, |
| 1315 |
_Tp |
| 1316 |
>::type |
| 1317 |
atomic_fetch_add(atomic<_Tp>* __o, _Tp __op) _NOEXCEPT |
| 1318 |
{
|
| 1319 |
return __o->fetch_add(__op); |
| 1320 |
} |
| 1321 |
|
| 1322 |
template <class _Tp> |
| 1323 |
inline _LIBCPP_INLINE_VISIBILITY |
| 1324 |
_Tp* |
| 1325 |
atomic_fetch_add(volatile atomic<_Tp*>* __o, ptrdiff_t __op) _NOEXCEPT |
| 1326 |
{
|
| 1327 |
return __o->fetch_add(__op); |
| 1328 |
} |
| 1329 |
|
| 1330 |
template <class _Tp> |
| 1331 |
inline _LIBCPP_INLINE_VISIBILITY |
| 1332 |
_Tp* |
| 1333 |
atomic_fetch_add(atomic<_Tp*>* __o, ptrdiff_t __op) _NOEXCEPT |
| 1334 |
{
|
| 1335 |
return __o->fetch_add(__op); |
| 1336 |
} |
| 1337 |
|
| 1338 |
// atomic_fetch_add_explicit |
| 1339 |
|
| 1340 |
template <class _Tp> |
| 1341 |
inline _LIBCPP_INLINE_VISIBILITY |
| 1342 |
typename enable_if |
| 1343 |
< |
| 1344 |
is_integral<_Tp>::value && !is_same<_Tp, bool>::value, |
| 1345 |
_Tp |
| 1346 |
>::type |
| 1347 |
atomic_fetch_add_explicit(volatile atomic<_Tp>* __o, _Tp __op, memory_order __m) _NOEXCEPT |
| 1348 |
{
|
| 1349 |
return __o->fetch_add(__op, __m); |
| 1350 |
} |
| 1351 |
|
| 1352 |
template <class _Tp> |
| 1353 |
inline _LIBCPP_INLINE_VISIBILITY |
| 1354 |
typename enable_if |
| 1355 |
< |
| 1356 |
is_integral<_Tp>::value && !is_same<_Tp, bool>::value, |
| 1357 |
_Tp |
| 1358 |
>::type |
| 1359 |
atomic_fetch_add_explicit(atomic<_Tp>* __o, _Tp __op, memory_order __m) _NOEXCEPT |
| 1360 |
{
|
| 1361 |
return __o->fetch_add(__op, __m); |
| 1362 |
} |
| 1363 |
|
| 1364 |
template <class _Tp> |
| 1365 |
inline _LIBCPP_INLINE_VISIBILITY |
| 1366 |
_Tp* |
| 1367 |
atomic_fetch_add_explicit(volatile atomic<_Tp*>* __o, ptrdiff_t __op, |
| 1368 |
memory_order __m) _NOEXCEPT |
| 1369 |
{
|
| 1370 |
return __o->fetch_add(__op, __m); |
| 1371 |
} |
| 1372 |
|
| 1373 |
template <class _Tp> |
| 1374 |
inline _LIBCPP_INLINE_VISIBILITY |
| 1375 |
_Tp* |
| 1376 |
atomic_fetch_add_explicit(atomic<_Tp*>* __o, ptrdiff_t __op, memory_order __m) _NOEXCEPT |
| 1377 |
{
|
| 1378 |
return __o->fetch_add(__op, __m); |
| 1379 |
} |
| 1380 |
|
| 1381 |
// atomic_fetch_sub |
| 1382 |
|
| 1383 |
template <class _Tp> |
| 1384 |
inline _LIBCPP_INLINE_VISIBILITY |
| 1385 |
typename enable_if |
| 1386 |
< |
| 1387 |
is_integral<_Tp>::value && !is_same<_Tp, bool>::value, |
| 1388 |
_Tp |
| 1389 |
>::type |
| 1390 |
atomic_fetch_sub(volatile atomic<_Tp>* __o, _Tp __op) _NOEXCEPT |
| 1391 |
{
|
| 1392 |
return __o->fetch_sub(__op); |
| 1393 |
} |
| 1394 |
|
| 1395 |
template <class _Tp> |
| 1396 |
inline _LIBCPP_INLINE_VISIBILITY |
| 1397 |
typename enable_if |
| 1398 |
< |
| 1399 |
is_integral<_Tp>::value && !is_same<_Tp, bool>::value, |
| 1400 |
_Tp |
| 1401 |
>::type |
| 1402 |
atomic_fetch_sub(atomic<_Tp>* __o, _Tp __op) _NOEXCEPT |
| 1403 |
{
|
| 1404 |
return __o->fetch_sub(__op); |
| 1405 |
} |
| 1406 |
|
| 1407 |
template <class _Tp> |
| 1408 |
inline _LIBCPP_INLINE_VISIBILITY |
| 1409 |
_Tp* |
| 1410 |
atomic_fetch_sub(volatile atomic<_Tp*>* __o, ptrdiff_t __op) _NOEXCEPT |
| 1411 |
{
|
| 1412 |
return __o->fetch_sub(__op); |
| 1413 |
} |
| 1414 |
|
| 1415 |
template <class _Tp> |
| 1416 |
inline _LIBCPP_INLINE_VISIBILITY |
| 1417 |
_Tp* |
| 1418 |
atomic_fetch_sub(atomic<_Tp*>* __o, ptrdiff_t __op) _NOEXCEPT |
| 1419 |
{
|
| 1420 |
return __o->fetch_sub(__op); |
| 1421 |
} |
| 1422 |
|
| 1423 |
// atomic_fetch_sub_explicit |
| 1424 |
|
| 1425 |
template <class _Tp> |
| 1426 |
inline _LIBCPP_INLINE_VISIBILITY |
| 1427 |
typename enable_if |
| 1428 |
< |
| 1429 |
is_integral<_Tp>::value && !is_same<_Tp, bool>::value, |
| 1430 |
_Tp |
| 1431 |
>::type |
| 1432 |
atomic_fetch_sub_explicit(volatile atomic<_Tp>* __o, _Tp __op, memory_order __m) _NOEXCEPT |
| 1433 |
{
|
| 1434 |
return __o->fetch_sub(__op, __m); |
| 1435 |
} |
| 1436 |
|
| 1437 |
template <class _Tp> |
| 1438 |
inline _LIBCPP_INLINE_VISIBILITY |
| 1439 |
typename enable_if |
| 1440 |
< |
| 1441 |
is_integral<_Tp>::value && !is_same<_Tp, bool>::value, |
| 1442 |
_Tp |
| 1443 |
>::type |
| 1444 |
atomic_fetch_sub_explicit(atomic<_Tp>* __o, _Tp __op, memory_order __m) _NOEXCEPT |
| 1445 |
{
|
| 1446 |
return __o->fetch_sub(__op, __m); |
| 1447 |
} |
| 1448 |
|
| 1449 |
template <class _Tp> |
| 1450 |
inline _LIBCPP_INLINE_VISIBILITY |
| 1451 |
_Tp* |
| 1452 |
atomic_fetch_sub_explicit(volatile atomic<_Tp*>* __o, ptrdiff_t __op, |
| 1453 |
memory_order __m) _NOEXCEPT |
| 1454 |
{
|
| 1455 |
return __o->fetch_sub(__op, __m); |
| 1456 |
} |
| 1457 |
|
| 1458 |
template <class _Tp> |
| 1459 |
inline _LIBCPP_INLINE_VISIBILITY |
| 1460 |
_Tp* |
| 1461 |
atomic_fetch_sub_explicit(atomic<_Tp*>* __o, ptrdiff_t __op, memory_order __m) _NOEXCEPT |
| 1462 |
{
|
| 1463 |
return __o->fetch_sub(__op, __m); |
| 1464 |
} |
| 1465 |
|
| 1466 |
// atomic_fetch_and |
| 1467 |
|
| 1468 |
template <class _Tp> |
| 1469 |
inline _LIBCPP_INLINE_VISIBILITY |
| 1470 |
typename enable_if |
| 1471 |
< |
| 1472 |
is_integral<_Tp>::value && !is_same<_Tp, bool>::value, |
| 1473 |
_Tp |
| 1474 |
>::type |
| 1475 |
atomic_fetch_and(volatile atomic<_Tp>* __o, _Tp __op) _NOEXCEPT |
| 1476 |
{
|
| 1477 |
return __o->fetch_and(__op); |
| 1478 |
} |
| 1479 |
|
| 1480 |
template <class _Tp> |
| 1481 |
inline _LIBCPP_INLINE_VISIBILITY |
| 1482 |
typename enable_if |
| 1483 |
< |
| 1484 |
is_integral<_Tp>::value && !is_same<_Tp, bool>::value, |
| 1485 |
_Tp |
| 1486 |
>::type |
| 1487 |
atomic_fetch_and(atomic<_Tp>* __o, _Tp __op) _NOEXCEPT |
| 1488 |
{
|
| 1489 |
return __o->fetch_and(__op); |
| 1490 |
} |
| 1491 |
|
| 1492 |
// atomic_fetch_and_explicit |
| 1493 |
|
| 1494 |
template <class _Tp> |
| 1495 |
inline _LIBCPP_INLINE_VISIBILITY |
| 1496 |
typename enable_if |
| 1497 |
< |
| 1498 |
is_integral<_Tp>::value && !is_same<_Tp, bool>::value, |
| 1499 |
_Tp |
| 1500 |
>::type |
| 1501 |
atomic_fetch_and_explicit(volatile atomic<_Tp>* __o, _Tp __op, memory_order __m) _NOEXCEPT |
| 1502 |
{
|
| 1503 |
return __o->fetch_and(__op, __m); |
| 1504 |
} |
| 1505 |
|
| 1506 |
template <class _Tp> |
| 1507 |
inline _LIBCPP_INLINE_VISIBILITY |
| 1508 |
typename enable_if |
| 1509 |
< |
| 1510 |
is_integral<_Tp>::value && !is_same<_Tp, bool>::value, |
| 1511 |
_Tp |
| 1512 |
>::type |
| 1513 |
atomic_fetch_and_explicit(atomic<_Tp>* __o, _Tp __op, memory_order __m) _NOEXCEPT |
| 1514 |
{
|
| 1515 |
return __o->fetch_and(__op, __m); |
| 1516 |
} |
| 1517 |
|
| 1518 |
// atomic_fetch_or |
| 1519 |
|
| 1520 |
template <class _Tp> |
| 1521 |
inline _LIBCPP_INLINE_VISIBILITY |
| 1522 |
typename enable_if |
| 1523 |
< |
| 1524 |
is_integral<_Tp>::value && !is_same<_Tp, bool>::value, |
| 1525 |
_Tp |
| 1526 |
>::type |
| 1527 |
atomic_fetch_or(volatile atomic<_Tp>* __o, _Tp __op) _NOEXCEPT |
| 1528 |
{
|
| 1529 |
return __o->fetch_or(__op); |
| 1530 |
} |
| 1531 |
|
| 1532 |
template <class _Tp> |
| 1533 |
inline _LIBCPP_INLINE_VISIBILITY |
| 1534 |
typename enable_if |
| 1535 |
< |
| 1536 |
is_integral<_Tp>::value && !is_same<_Tp, bool>::value, |
| 1537 |
_Tp |
| 1538 |
>::type |
| 1539 |
atomic_fetch_or(atomic<_Tp>* __o, _Tp __op) _NOEXCEPT |
| 1540 |
{
|
| 1541 |
return __o->fetch_or(__op); |
| 1542 |
} |
| 1543 |
|
| 1544 |
// atomic_fetch_or_explicit |
| 1545 |
|
| 1546 |
template <class _Tp> |
| 1547 |
inline _LIBCPP_INLINE_VISIBILITY |
| 1548 |
typename enable_if |
| 1549 |
< |
| 1550 |
is_integral<_Tp>::value && !is_same<_Tp, bool>::value, |
| 1551 |
_Tp |
| 1552 |
>::type |
| 1553 |
atomic_fetch_or_explicit(volatile atomic<_Tp>* __o, _Tp __op, memory_order __m) _NOEXCEPT |
| 1554 |
{
|
| 1555 |
return __o->fetch_or(__op, __m); |
| 1556 |
} |
| 1557 |
|
| 1558 |
template <class _Tp> |
| 1559 |
inline _LIBCPP_INLINE_VISIBILITY |
| 1560 |
typename enable_if |
| 1561 |
< |
| 1562 |
is_integral<_Tp>::value && !is_same<_Tp, bool>::value, |
| 1563 |
_Tp |
| 1564 |
>::type |
| 1565 |
atomic_fetch_or_explicit(atomic<_Tp>* __o, _Tp __op, memory_order __m) _NOEXCEPT |
| 1566 |
{
|
| 1567 |
return __o->fetch_or(__op, __m); |
| 1568 |
} |
| 1569 |
|
| 1570 |
// atomic_fetch_xor |
| 1571 |
|
| 1572 |
template <class _Tp> |
| 1573 |
inline _LIBCPP_INLINE_VISIBILITY |
| 1574 |
typename enable_if |
| 1575 |
< |
| 1576 |
is_integral<_Tp>::value && !is_same<_Tp, bool>::value, |
| 1577 |
_Tp |
| 1578 |
>::type |
| 1579 |
atomic_fetch_xor(volatile atomic<_Tp>* __o, _Tp __op) _NOEXCEPT |
| 1580 |
{
|
| 1581 |
return __o->fetch_xor(__op); |
| 1582 |
} |
| 1583 |
|
| 1584 |
template <class _Tp> |
| 1585 |
inline _LIBCPP_INLINE_VISIBILITY |
| 1586 |
typename enable_if |
| 1587 |
< |
| 1588 |
is_integral<_Tp>::value && !is_same<_Tp, bool>::value, |
| 1589 |
_Tp |
| 1590 |
>::type |
| 1591 |
atomic_fetch_xor(atomic<_Tp>* __o, _Tp __op) _NOEXCEPT |
| 1592 |
{
|
| 1593 |
return __o->fetch_xor(__op); |
| 1594 |
} |
| 1595 |
|
| 1596 |
// atomic_fetch_xor_explicit |
| 1597 |
|
| 1598 |
template <class _Tp> |
| 1599 |
inline _LIBCPP_INLINE_VISIBILITY |
| 1600 |
typename enable_if |
| 1601 |
< |
| 1602 |
is_integral<_Tp>::value && !is_same<_Tp, bool>::value, |
| 1603 |
_Tp |
| 1604 |
>::type |
| 1605 |
atomic_fetch_xor_explicit(volatile atomic<_Tp>* __o, _Tp __op, memory_order __m) _NOEXCEPT |
| 1606 |
{
|
| 1607 |
return __o->fetch_xor(__op, __m); |
| 1608 |
} |
| 1609 |
|
| 1610 |
template <class _Tp> |
| 1611 |
inline _LIBCPP_INLINE_VISIBILITY |
| 1612 |
typename enable_if |
| 1613 |
< |
| 1614 |
is_integral<_Tp>::value && !is_same<_Tp, bool>::value, |
| 1615 |
_Tp |
| 1616 |
>::type |
| 1617 |
atomic_fetch_xor_explicit(atomic<_Tp>* __o, _Tp __op, memory_order __m) _NOEXCEPT |
| 1618 |
{
|
| 1619 |
return __o->fetch_xor(__op, __m); |
| 1620 |
} |
| 1621 |
|
| 1622 |
// flag type and operations |
| 1623 |
|
| 1624 |
typedef struct atomic_flag |
| 1625 |
{
|
| 1626 |
_Atomic(bool) __a_; |
| 1627 |
|
| 1628 |
_LIBCPP_INLINE_VISIBILITY |
| 1629 |
bool test_and_set(memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT |
| 1630 |
{return __c11_atomic_exchange(&__a_, true, __m);}
|
| 1631 |
_LIBCPP_INLINE_VISIBILITY |
| 1632 |
bool test_and_set(memory_order __m = memory_order_seq_cst) _NOEXCEPT |
| 1633 |
{return __c11_atomic_exchange(&__a_, true, __m);}
|
| 1634 |
_LIBCPP_INLINE_VISIBILITY |
| 1635 |
void clear(memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT |
| 1636 |
{__c11_atomic_store(&__a_, false, __m);}
|
| 1637 |
_LIBCPP_INLINE_VISIBILITY |
| 1638 |
void clear(memory_order __m = memory_order_seq_cst) _NOEXCEPT |
| 1639 |
{__c11_atomic_store(&__a_, false, __m);}
|
| 1640 |
|
| 1641 |
_LIBCPP_INLINE_VISIBILITY |
| 1642 |
#ifndef _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS |
| 1643 |
atomic_flag() _NOEXCEPT = default; |
| 1644 |
#else |
| 1645 |
atomic_flag() _NOEXCEPT : __a_() {}
|
| 1646 |
#endif // _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS |
| 1647 |
|
| 1648 |
_LIBCPP_INLINE_VISIBILITY |
| 1649 |
atomic_flag(bool __b) _NOEXCEPT : __a_(__b) {}
|
| 1650 |
|
| 1651 |
#ifndef _LIBCPP_HAS_NO_DELETED_FUNCTIONS |
| 1652 |
atomic_flag(const atomic_flag&) = delete; |
| 1653 |
atomic_flag& operator=(const atomic_flag&) = delete; |
| 1654 |
atomic_flag& operator=(const atomic_flag&) volatile = delete; |
| 1655 |
#else // _LIBCPP_HAS_NO_DELETED_FUNCTIONS |
| 1656 |
private: |
| 1657 |
atomic_flag(const atomic_flag&); |
| 1658 |
atomic_flag& operator=(const atomic_flag&); |
| 1659 |
atomic_flag& operator=(const atomic_flag&) volatile; |
| 1660 |
#endif // _LIBCPP_HAS_NO_DELETED_FUNCTIONS |
| 1661 |
} atomic_flag; |
| 1662 |
|
| 1663 |
inline _LIBCPP_INLINE_VISIBILITY |
| 1664 |
bool |
| 1665 |
atomic_flag_test_and_set(volatile atomic_flag* __o) _NOEXCEPT |
| 1666 |
{
|
| 1667 |
return __o->test_and_set(); |
| 1668 |
} |
| 1669 |
|
| 1670 |
inline _LIBCPP_INLINE_VISIBILITY |
| 1671 |
bool |
| 1672 |
atomic_flag_test_and_set(atomic_flag* __o) _NOEXCEPT |
| 1673 |
{
|
| 1674 |
return __o->test_and_set(); |
| 1675 |
} |
| 1676 |
|
| 1677 |
inline _LIBCPP_INLINE_VISIBILITY |
| 1678 |
bool |
| 1679 |
atomic_flag_test_and_set_explicit(volatile atomic_flag* __o, memory_order __m) _NOEXCEPT |
| 1680 |
{
|
| 1681 |
return __o->test_and_set(__m); |
| 1682 |
} |
| 1683 |
|
| 1684 |
inline _LIBCPP_INLINE_VISIBILITY |
| 1685 |
bool |
| 1686 |
atomic_flag_test_and_set_explicit(atomic_flag* __o, memory_order __m) _NOEXCEPT |
| 1687 |
{
|
| 1688 |
return __o->test_and_set(__m); |
| 1689 |
} |
| 1690 |
|
| 1691 |
inline _LIBCPP_INLINE_VISIBILITY |
| 1692 |
void |
| 1693 |
atomic_flag_clear(volatile atomic_flag* __o) _NOEXCEPT |
| 1694 |
{
|
| 1695 |
__o->clear(); |
| 1696 |
} |
| 1697 |
|
| 1698 |
inline _LIBCPP_INLINE_VISIBILITY |
| 1699 |
void |
| 1700 |
atomic_flag_clear(atomic_flag* __o) _NOEXCEPT |
| 1701 |
{
|
| 1702 |
__o->clear(); |
| 1703 |
} |
| 1704 |
|
| 1705 |
inline _LIBCPP_INLINE_VISIBILITY |
| 1706 |
void |
| 1707 |
atomic_flag_clear_explicit(volatile atomic_flag* __o, memory_order __m) _NOEXCEPT |
| 1708 |
{
|
| 1709 |
__o->clear(__m); |
| 1710 |
} |
| 1711 |
|
| 1712 |
inline _LIBCPP_INLINE_VISIBILITY |
| 1713 |
void |
| 1714 |
atomic_flag_clear_explicit(atomic_flag* __o, memory_order __m) _NOEXCEPT |
| 1715 |
{
|
| 1716 |
__o->clear(__m); |
| 1717 |
} |
| 1718 |
|
| 1719 |
// fences |
| 1720 |
|
| 1721 |
inline _LIBCPP_INLINE_VISIBILITY |
| 1722 |
void |
| 1723 |
atomic_thread_fence(memory_order __m) _NOEXCEPT |
| 1724 |
{
|
| 1725 |
__c11_atomic_thread_fence(__m); |
| 1726 |
} |
| 1727 |
|
| 1728 |
inline _LIBCPP_INLINE_VISIBILITY |
| 1729 |
void |
| 1730 |
atomic_signal_fence(memory_order __m) _NOEXCEPT |
| 1731 |
{
|
| 1732 |
__c11_atomic_signal_fence(__m); |
| 1733 |
} |
| 1734 |
|
| 1735 |
// Atomics for standard typedef types |
| 1736 |
|
| 1737 |
typedef atomic<bool> atomic_bool; |
| 1738 |
typedef atomic<char> atomic_char; |
| 1739 |
typedef atomic<signed char> atomic_schar; |
| 1740 |
typedef atomic<unsigned char> atomic_uchar; |
| 1741 |
typedef atomic<short> atomic_short; |
| 1742 |
typedef atomic<unsigned short> atomic_ushort; |
| 1743 |
typedef atomic<int> atomic_int; |
| 1744 |
typedef atomic<unsigned int> atomic_uint; |
| 1745 |
typedef atomic<long> atomic_long; |
| 1746 |
typedef atomic<unsigned long> atomic_ulong; |
| 1747 |
typedef atomic<long long> atomic_llong; |
| 1748 |
typedef atomic<unsigned long long> atomic_ullong; |
| 1749 |
typedef atomic<char16_t> atomic_char16_t; |
| 1750 |
typedef atomic<char32_t> atomic_char32_t; |
| 1751 |
typedef atomic<wchar_t> atomic_wchar_t; |
| 1752 |
|
| 1753 |
typedef atomic<int_least8_t> atomic_int_least8_t; |
| 1754 |
typedef atomic<uint_least8_t> atomic_uint_least8_t; |
| 1755 |
typedef atomic<int_least16_t> atomic_int_least16_t; |
| 1756 |
typedef atomic<uint_least16_t> atomic_uint_least16_t; |
| 1757 |
typedef atomic<int_least32_t> atomic_int_least32_t; |
| 1758 |
typedef atomic<uint_least32_t> atomic_uint_least32_t; |
| 1759 |
typedef atomic<int_least64_t> atomic_int_least64_t; |
| 1760 |
typedef atomic<uint_least64_t> atomic_uint_least64_t; |
| 1761 |
|
| 1762 |
typedef atomic<int_fast8_t> atomic_int_fast8_t; |
| 1763 |
typedef atomic<uint_fast8_t> atomic_uint_fast8_t; |
| 1764 |
typedef atomic<int_fast16_t> atomic_int_fast16_t; |
| 1765 |
typedef atomic<uint_fast16_t> atomic_uint_fast16_t; |
| 1766 |
typedef atomic<int_fast32_t> atomic_int_fast32_t; |
| 1767 |
typedef atomic<uint_fast32_t> atomic_uint_fast32_t; |
| 1768 |
typedef atomic<int_fast64_t> atomic_int_fast64_t; |
| 1769 |
typedef atomic<uint_fast64_t> atomic_uint_fast64_t; |
| 1770 |
|
| 1771 |
typedef atomic<intptr_t> atomic_intptr_t; |
| 1772 |
typedef atomic<uintptr_t> atomic_uintptr_t; |
| 1773 |
typedef atomic<size_t> atomic_size_t; |
| 1774 |
typedef atomic<ptrdiff_t> atomic_ptrdiff_t; |
| 1775 |
typedef atomic<intmax_t> atomic_intmax_t; |
| 1776 |
typedef atomic<uintmax_t> atomic_uintmax_t; |
| 1777 |
|
| 1778 |
#define ATOMIC_FLAG_INIT {false}
|
| 1779 |
#define ATOMIC_VAR_INIT(__v) {__v}
|
| 1780 |
|
| 1781 |
#define ATOMIC_BOOL_LOCK_FREE __GCC_ATOMIC_BOOL_LOCK_FREE |
| 1782 |
#define ATOMIC_CHAR_LOCK_FREE __GCC_ATOMIC_CHAR_LOCK_FREE |
| 1783 |
#define ATOMIC_CHAR16_T_LOCK_FREE __GCC_ATOMIC_CHAR16_T_LOCK_FREE |
| 1784 |
#define ATOMIC_CHAR32_T_LOCK_FREE __GCC_ATOMIC_CHAR32_T_LOCK_FREE |
| 1785 |
#define ATOMIC_WCHAR_T_LOCK_FREE __GCC_ATOMIC_WCHAR_T_LOCK_FREE |
| 1786 |
#define ATOMIC_SHORT_LOCK_FREE __GCC_ATOMIC_SHORT_LOCK_FREE |
| 1787 |
#define ATOMIC_INT_LOCK_FREE __GCC_ATOMIC_INT_LOCK_FREE |
| 1788 |
#define ATOMIC_LONG_LOCK_FREE __GCC_ATOMIC_LONG_LOCK_FREE |
| 1789 |
#define ATOMIC_LLONG_LOCK_FREE __GCC_ATOMIC_LLONG_LOCK_FREE |
| 1790 |
#define ATOMIC_POINTER_LOCK_FREE __GCC_ATOMIC_POINTER_LOCK_FREE |
| 1791 |
|
| 1792 |
_LIBCPP_END_NAMESPACE_STD |
| 1793 |
|
| 1794 |
#endif // _LIBCPP_ATOMIC |