std::atomic_flag_clear, std::atomic_flag_clear_explicit

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C++
 
原子操作库
类型
Original:
Types
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atomic（C++11）
atomic_is_lock_free（C++11）
功能
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）
原子标志
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）
初始化
Original:
Initialization
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atomic_init（C++11）
ATOMIC_VAR_INIT（C++11）
ATOMIC_FLAG_INIT（C++11）
内存排序
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 起）
void atomic_flag_clear( std::atomic_flag* p );
 (2) （C++11 起）
void atomic_flag_clear_explicit( volatile std::atomic_flag* p,
                                 std::memory_order order )
 (3) （C++11 起）
void atomic_flag_clear_explicit( std::atomic_flag* p,
                                 std::memory_order order )
 (4) （C++11 起）

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

目录

[编辑] 参数

p -
指针std::atomic_flag访问
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.

[编辑] 返回值

无
Original:
none.
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[编辑] 例外

noexcept specification:  
noexcept
  （C++11 起）

[编辑] 可能的实现

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);
}

[编辑] 另请参阅

（C++11）
无锁的布尔原子类型
Original:
the lock-free boolean atomic type
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（类） [edit]
（C++11）
（C++11）
以原子方式设置标志true，并返回其先前的值
Original:
atomically sets the flag to true and returns its previous value
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（函数） [edit]
（C++11）
定义内存排序约束给定的原子操作
Original:
defines memory ordering constraints for the given atomic operation
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（的typedef） [edit]
C documentation for atomic_flag_clear, atomic_flag_clear_explicit
来自“http://zh.cppreference.com/mwiki/index.php?title=cpp/atomic/atomic_flag_clear&oldid=27409”