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操作

std::atomic_flag_clear, std::atomic_flag_clear_explicit

提供: cppreference.com
< cpp‎ | atomic

 
 
アトミック操作ライブラリ
タイプ
Original:
Types
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atomic(C++11)
atomic_is_lock_free(C++11)
機能します
Original:
Functions
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atomic_store
atomic_store_explicit
(C++11)
(C++11)
atomic_load
atomic_load_explicit
(C++11)
(C++11)
atomic_exchange
atomic_exchange_explicit
(C++11)
(C++11)
atomic_compare_exchange_weak
atomic_compare_exchange_weak_explicit
atomic_compare_exchange_strong
atomic_compare_exchange_strong_explicit
(C++11)
(C++11)
(C++11)
(C++11)
atomic_fetch_add
atomic_fetch_add_explicit
(C++11)
(C++11)
atomic_fetch_sub
atomic_fetch_sub_explicit
(C++11)
(C++11)
atomic_fetch_and
atomic_fetch_and_explicit
(C++11)
(C++11)
atomic_fetch_or
atomic_fetch_or_explicit
(C++11)
(C++11)
atomic_fetch_xor
atomic_fetch_xor_explicit
(C++11)
(C++11)
アトミックのフラグ
Original:
Atomic flags
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atomic_flag(C++11)
atomic_flag_test_and_set
atomic_flag_test_and_set_explicit
(C++11)
(C++11)
atomic_flag_clear
atomic_flag_clear_explicit
(C++11)
(C++11)
初期化
Original:
Initialization
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atomic_init(C++11)
ATOMIC_VAR_INIT(C++11)
ATOMIC_FLAG_INIT(C++11)
メモリは発注
Original:
Memory ordering
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memory_order(C++11)
kill_dependency(C++11)
atomic_thread_fence(C++11)
atomic_signal_fence(C++11)
 
Defined in header <atomic>
void atomic_flag_clear( volatile std::atomic_flag* p );
(1) (C + + 11以来)
void atomic_flag_clear( std::atomic_flag* p );
(2) (C + + 11以来)
void atomic_flag_clear_explicit( volatile std::atomic_flag* p,
                                 std::memory_order order )
(3) (C + + 11以来)
void atomic_flag_clear_explicit( std::atomic_flag* p,
                                 std::memory_order order )
(4) (C + + 11以来)

Atomically changes the state of a std::atomic_flag pointed to by p to clear (false).

目次

[編集] パラメータ

p -
アクセスするstd::atomic_flagへのポインタ
Original:
pointer to std::atomic_flag to access
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order - the memory sycnhronization ordering for this operation: only std::memory_order_relaxed, std::memory_order_consume, std::memory_order_acquire, or std::memory_order_seq_cst are permitted.

[編集] 値を返します

なし.
Original:
none.
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[編集] 例外

noexcept specification:  
noexcept
  (C + + 11以来)

[編集] 可能な実装

First version
void atomic_flag_clear(volatile std::atomic_flag* p) 
{
    p->clear();
}
Second version
void atomic_flag_clear(std::atomic_flag* p) 
{
    p->clear();
}
Third version
void atomic_flag_clear_explicit(volatile std::atomic_flag* p, 
                                std::memory_order order) 
{
    p->clear(order);
}
Fourth version
void atomic_flag_clear_explicit(std::atomic_flag* p, 
                                std::memory_order order) 
{
    p->clear(order);
}

[編集] も参照してください

ロックフリーブール原子型
Original:
the lock-free boolean atomic type
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(クラス) [edit]
アトミックtrueにフラグを設定し、その前の値を返します
Original:
atomically sets the flag to true and returns its previous value
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(機能) [edit]
与えられたアトミック操作用のメモリ順序の制約を定義しています
Original:
defines memory ordering constraints for the given atomic operation
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(typedefです) [edit]
C documentation for atomic_flag_clear, atomic_flag_clear_explicit