Espaços nominais
Variantes
Acções

std::atomic_flag_clear, std::atomic_flag_clear_explicit

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< cpp‎ | atomic

 
 
Biblioteca operações atômica
Tipos
Original:
Types
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atomic(C++11)
atomic_is_lock_free(C++11)
Funções
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)
Bandeiras atômicas
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)
Inicialização
Original:
Initialization
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atomic_init(C++11)
ATOMIC_VAR_INIT(C++11)
ATOMIC_FLAG_INIT(C++11)
Memória de encomenda
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) (a partir do C++ 11)
void atomic_flag_clear( std::atomic_flag* p );
(2) (a partir do C++ 11)
void atomic_flag_clear_explicit( volatile std::atomic_flag* p,
                                 std::memory_order order )
(3) (a partir do C++ 11)
void atomic_flag_clear_explicit( std::atomic_flag* p,
                                 std::memory_order order )
(4) (a partir do C++ 11)

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

Índice

[editar] Parâmetros

p -
ponteiro para std::atomic_flag acessar
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.

[editar] Valor de retorno

nenhum.
Original:
none.
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[editar] Exceções

noexcept specification:  
noexcept
  (a partir do C++ 11)

[editar] Possível implementação

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);
}

[editar] Veja também

o lock-livre tipo boolean atômica
Original:
the lock-free boolean atomic type
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(classe) [edit]
atomicamente define o sinalizador para true e retorna seu valor anterior
Original:
atomically sets the flag to true and returns its previous value
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(função) [edit]
define restrições de memória de encomenda para a operação dada atômica
Original:
defines memory ordering constraints for the given atomic operation
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(typedef) [edit]
C documentation for atomic_flag_clear, atomic_flag_clear_explicit