std::atomic::fetch_add

<metanoindex/>

 

C++

Linguaggio

Concetti

Libreria di Utilità

Stringhe

Contenitori

Algoritmi

Iteratori

Libreria matematca

Input/output

Localizzazione

Espressioni regolari (C++11)

Operazioni atomicche (C++11)

Multithreading (C++11)

 

Atomic operazioni di biblioteca

Tipi Original: Types The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

atomic (C++11)

atomic_is_lock_free (C++11)

Funzioni Original: Functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

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)

Bandiere Atomic Original: Atomic flags The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

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)

Inizializzazione Original: Initialization The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

atomic_init (C++11)

ATOMIC_VAR_INIT (C++11)

ATOMIC_FLAG_INIT (C++11)

Memoria di ordinazione Original: Memory ordering The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

memory_order (C++11)

kill_dependency (C++11)

atomic_thread_fence (C++11)

atomic_signal_fence (C++11)

 

std::atomic

Membri funzioni Original: Member functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

atomic::atomic

atomic::operator=

atomic::is_lock_free

atomic::store

atomic::load

atomic::operator T

atomic::exchange

atomic::compare_exchange

Funzioni membro specializzati Original: Specialized member functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

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^=

 

<tbody> </tbody>

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;		(unico membro del modello di specializzazione atomic<Integral>) (dal 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;		(unico membro del modello di specializzazione atomic<T*>) (dal C++11)

Atomicamente sostituisce il valore corrente con il risultato della somma aritmetica del valore e arg. L'operazione è lettura-modifica-scrittura. Memoria è influenzata in base al valore di 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.

The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

Per i tipi di Integral firmati, l'aritmetica è definito l'utilizzo di due rappresentazione in complemento. Ecco

Original:

For signed Integral types, arithmetic is defined to use two’s complement representation. There

The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

sono risultati non definiti. Per i tipi T*, il risultato può essere un indirizzo definito, ma le operazioni altrimenti non hanno un comportamento indefinito.

Original:

are no undefined results. For T* types, the result may be an undefined address, but the operations otherwise have no undefined behavior.

The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

Parametri

arg	-	l'altro argomento di somma aritmetica Original: the other argument of arithmetic addition The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
memory_order	-	vincoli di ordine di memoria da far rispettare Original: memory order constraints to enforce The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

Valore di ritorno

Il valore della variabile atomica prima della chiamata.

Original:

The value of the atomic variable before the call.

The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

Eccezioni

noexcept specification:  

<tbody> </tbody>

noexcept

  (dal C++11)

Vedi anche

atomic_fetch_add atomic_fetch_add_explicit (C++11) (C++11)	aggiunge un non-atomico valore a un oggetto atomico e ottiene il valore precedente della atomico Original: adds a non-atomic value to an atomic object and obtains the previous value of the atomic The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (funzione di modello)