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std::atomic::exchange

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< cpp‎ | atomic‎ | atomic

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C++
 
Atomic operazioni di biblioteca
Tipi
Original:
Types
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atomic(C++11)
atomic_is_lock_free(C++11)
Funzioni
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)
Bandiere Atomic
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)
Inizializzazione
Original:
Initialization
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atomic_init(C++11)
ATOMIC_VAR_INIT(C++11)
ATOMIC_FLAG_INIT(C++11)
Memoria di ordinazione
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
Membri funzioni
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
Funzioni membro specializzati
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 exchange( T desired, memory_order = std::memory_order_seq_cst );
 (dal C++11)
T exchange( T desired, memory_order = std::memory_order_seq_cst ) volatile;
 (dal C++11)
Sostituisce atomico il valore sottostante con desired. L'operazione è lettura-modifica-scrittura. Memoria è influenzata in base al valore di memory_order.
Original:
Atomically replaces the underlying value with desired. The operation is read-modify-write operation. Memory is affected according to the value of memory_order.
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Indice

[modifica] Parametri

desired -
valore da assegnare
Original:
value to assign
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memory_order -
vincoli di ordine di memoria da far rispettare
Original:
memory order constraints to enforce
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[modifica] Valore di ritorno

Il valore della variabile atomica prima della chiamata.
Original:
The value of the atomic variable before the call.
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[modifica] Eccezioni

noexcept specification:  
noexcept
  (dal C++11)

[modifica] Vedi anche

(C++11)
(C++11)
sostituisce atomicamente il valore dell'oggetto atomica con non-atomica argomento e restituisce il vecchio valore del atomica
Original:
atomically replaces the value of the atomic object with non-atomic argument and returns the old value of the atomic
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(funzione di modello) [modifica]
Estratto da "https://it.cppreference.com/mwiki/index.php?title=cpp/atomic/atomic/exchange&oldid=25008"