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std::atomic_flag_clear, std::atomic_flag_clear_explicit

De cppreference.com
< cpp‎ | atomic

 
 
Atomique opérations de la bibliothèque
Types
Original:
Types
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atomic (C++11)
atomic_is_lock_free (C++11)
Fonctions
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)
Drapeaux atomiques
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)
Initialisation
Original:
Initialization
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atomic_init (C++11)
ATOMIC_VAR_INIT (C++11)
ATOMIC_FLAG_INIT (C++11)
Mémoire de la commande
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) (depuis C++11)
void atomic_flag_clear( std::atomic_flag* p );
(2) (depuis C++11)
void atomic_flag_clear_explicit( volatile std::atomic_flag* p,
                                 std::memory_order order )
(3) (depuis C++11)
void atomic_flag_clear_explicit( std::atomic_flag* p,
                                 std::memory_order order )
(4) (depuis C++11)
Change l'état atomique d'un std::atomic_flag pointé par p à effacer (false) .
Original:
Atomically changes the state of a std::atomic_flag pointed to by p to clear (false).
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Sommaire

[modifier] Paramètres

p -
pointeur vers std::atomic_flag d'accès
Original:
pointer to std::atomic_flag to access
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order -
sycnhronization la mémoire de commande pour cette opération: seulement std::memory_order_relaxed, std::memory_order_consume, std::memory_order_acquire ou std::memory_order_seq_cst sont autorisés .
Original:
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.
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[modifier] Retourne la valeur

aucune .
Original:
none.
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[modifier] Exceptions

noexcept specification:  
noexcept
   (depuis C++11)

[modifier] Mise en œuvre possible

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);
}

[modifier] Voir aussi

(C++11)
la serrure sans type booléen atomique
Original:
the lock-free boolean atomic type
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(classe) [edit]
définit de manière atomique le drapeau pour true et renvoie sa valeur précédente
Original:
atomically sets the flag to true and returns its previous value
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(fonction) [edit]
définit des contraintes de mémoire de commande pour l'opération donnée atomique
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