std::atomic::operator+=,-=,&=,|=,^=

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C++

Suporte ao Compilador

Freestanding and hosted

Linguagem

Headers da Biblioteca Standard

Requerimentos nomeados

Feature test macros (C++20)

Biblioteca de suporte de língua

Biblioteca de conceitos (C++20)

Biblioteca de diagnósticos

Biblioteca de utilitários em geral

Biblioteca de strings

Biblioteca de containers

Ranges library (C++20)

Biblioteca de iteradores

Biblioteca de algorítmos

Biblioteca numérica

Biblioteca de localizações

Biblioteca de input/output

Biblioteca de sistema de arquivo (C++17)

Biblioteca de expressões regulares (C++11)

Biblioteca de operações atômicas (C++11)

Biblioteca de suporte de thread (C++11)

Especificações Técnicas

Índice de symbolos

Bibliotecas externas

 

Biblioteca operações atômica

Tipos 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)

Funções 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_storeatomic_store_explicit (C++11)(C++11)

atomic_loadatomic_load_explicit (C++11)(C++11)

atomic_exchangeatomic_exchange_explicit (C++11)(C++11)

atomic_compare_exchange_weakatomic_compare_exchange_weak_explicitatomic_compare_exchange_strongatomic_compare_exchange_strong_explicit (C++11)(C++11)(C++11)(C++11)

atomic_fetch_addatomic_fetch_add_explicit (C++11)(C++11)

atomic_fetch_subatomic_fetch_sub_explicit (C++11)(C++11)

atomic_fetch_andatomic_fetch_and_explicit (C++11)(C++11)

atomic_fetch_oratomic_fetch_or_explicit (C++11)(C++11)

atomic_fetch_xoratomic_fetch_xor_explicit (C++11)(C++11)

Bandeiras atômicas 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_setatomic_flag_test_and_set_explicit (C++11)(C++11)

atomic_flag_clearatomic_flag_clear_explicit (C++11)(C++11)

Inicialização 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)

Memória de encomenda 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

Funções de membro 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

Membro funções especializadas 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 operator+=( T arg ); T operator+=( T arg ) volatile;	(1)	(único membro da atomic<Integral> especialização modelo) (desde C++11)
T* operator+=( std::ptrdiff_t arg ); T* operator+=( std::ptrdiff_t arg ) volatile;	(1)	(único membro da atomic<T*> especialização modelo) (desde C++11)
T operator-=( T arg ); T operator-=( T arg ) volatile;	(2)	(único membro da atomic<Integral> especialização modelo) (desde C++11)
T* operator-=( std::ptrdiff_t arg ); T* operator-=( std::ptrdiff_t arg ) volatile;	(2)	(único membro da atomic<T*> especialização modelo) (desde C++11)
T operator&=( T arg ); T operator&=( T arg ) volatile;	(3)	(único membro da atomic<Integral> especialização modelo) (desde C++11)
T operator|=( T arg ); T operator|=( T arg ) volatile;	(4)	(único membro da atomic<Integral> especialização modelo) (desde C++11)
T operator^=( T arg ); T operator^=( T arg ) volatile;	(5)	(único membro da atomic<Integral> especialização modelo) (desde C++11)

Atomicamente substitui o valor da corrente com o resultado do cálculo que envolve o valor anterior e arg. A operação é ler-modificar-escrever operação.

Original:

Atomically replaces the current value with the result of computation involving the previous value and arg. The operation is read-modify-write operation.

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1)

Executa adição atômica. Equivalente a fetch_add(arg).

Original:

Performs atomic addition. Equivalent to fetch_add(arg).

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2)

Executa subtração atômica. Equivalente a fetch_sub(arg).

Original:

Performs atomic subtraction. Equivalent to fetch_sub(arg).

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3)

Executa bit a bit atômica e. Equivalente a fetch_and(arg).

Original:

Performs atomic bitwise and. Equivalent to fetch_and(arg).

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4)

Executa bit a bit atômica ou. Equivalente a fetch_or(arg).

Original:

Performs atomic bitwise or. Equivalent to fetch_or(arg).

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5)

Executa atômica bit a bit exclusivo ou. Equivalente a fetch_xor(arg).

Original:

Performs atomic bitwise exclusive or. Equivalent to fetch_xor(arg).

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Para os tipos de Integral assinados, a aritmética é definida para usar dois representação de complemento. Lá

Original:

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

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há resultados indefinidos. Para os tipos de T*, o resultado pode ser um endereço indefinido, mas as operações de outra forma não têm um comportamento indefinido.

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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Parâmetros

arg

-

o argumento para a operação aritmética Original: the argument for the arithmetic operation The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

Valor de retorno

O valor resultante.

Original:

The resulting value.

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Exceções

noexcept specification:  

<tbody> </tbody>

noexcept

  (desde C++11)

Veja também

operator++ operator++(int) operator-- operator--(int)	aumenta ou diminui o valor atômico por um Original: increments or decrements the atomic value by one The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (função pública membro)