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std::atomic::fetch_add

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< cpp‎ | atomic‎ | 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)
 
std::atomic
Les fonctions membres
Original:
Member functions
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atomic::atomic
atomic::operator=
atomic::is_lock_free
atomic::store
atomic::load
atomic::operator T
atomic::exchange
atomic::compare_exchange
Fonctions membres spécialisés
Original:
Specialized member functions
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atomic::fetch_add
atomic::fetch_sub
atomic::fetch_and
atomic::fetch_or
atomic::fetch_xor
atomic::operator++
atomic::operator++(int)
atomic::operator--
atomic::operator--(int)
atomic::operator+=
atomic::operator-=
atomic::operator&=
atomic::operator|=
atomic::operator^=
 
T fetch_add( T arg,

             memory_order = std::memory_order_seq_cst );
T fetch_add( T arg,

             memory_order = std::memory_order_seq_cst ) volatile;
(
seul membre de spécialisation de template atomic<Integral>
Original:
member only of atomic<Integral> template specialization
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(depuis C++11)
T* fetch_add( std::ptrdiff_t arg,

              memory_order = std::memory_order_seq_cst );
T* fetch_add( std::ptrdiff_t arg,

              memory_order = std::memory_order_seq_cst ) volatile;
(
seul membre de spécialisation de template atomic<T*>
Original:
member only of atomic<T*> template specialization
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(depuis C++11)
Atomiquement remplace la valeur actuelle du résultat de l'addition arithmétique de la valeur et arg. L'opération est de lecture-modification-écriture. La mémoire est affectée en fonction de la valeur de memory_order .
Original:
Atomically replaces the current value with the result of arithmetic addition of the value and arg. The operation is read-modify-write operation. Memory is affected according to the value of memory_order.
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Pour les types de Integral signés, l'arithmétique est défini pour utiliser la représentation en complément à deux. Il
Original:
For signed Integral types, arithmetic is defined to use two’s complement representation. There
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n'y a pas de résultats indéfinis. Pour les types de T*, le résultat peut être une adresse définie, mais les opérations n'ont autrement pas de comportement indéfini .
Original:
are no undefined results. For T* types, the result may be an undefined address, but the operations otherwise have no undefined behavior.
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Sommaire

[modifier] Paramètres

arg -
l'autre argument de addition arithmétique
Original:
the other argument of arithmetic addition
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memory_order -
contraintes d'ordre pour faire respecter la mémoire
Original:
memory order constraints to enforce
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[modifier] Retourne la valeur

La valeur de la variable atomique avant l'appel .
Original:
The value of the atomic variable before the call.
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[modifier] Exceptions

noexcept specification:  
noexcept
   (depuis C++11)

[modifier] Voir aussi

ajoute une valeur non atomique à un objet atomique et obtient la valeur précédente de l'atome
Original:
adds a non-atomic value to an atomic object and obtains the previous value of the atomic
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(fonction générique) [edit]