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Atomic operations library - cppreference.com

A biblioteca atômica fornece componentes para refinadas operações atômicas que permitem programação concorrente lockless. Cada operação atômica é indivisível em relação a qualquer outra operação atômica que envolve o mesmo objeto. Objetos atômicos são os únicos objetos C + + livres de raças de dados, isto é, se uma thread escreve para um atômica enquanto outro segmento lê-lo, o comportamento é bem definido.

Original:

The atomic library provides components for fine-grained atomic operations allowing for lockless concurrent programming. Each atomic operation is indivisible with regards to any other atomic operation that involves the same object. Atomic objects are the only C++ objects free of data races; that is, if one thread writes to an atomic while another thread reads from it, the behavior is well-defined.

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Defined in header <atomic>

Tipos atômicos

Original:

Atomic types

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(C++11)

modelo de classe atômica e especializações para os tipos bool, integral e ponteiro

Original:

atomic class template and specializations for bool, integral, and pointer types

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(modelo de classe) [edit]

verifica se as operações do tipo atômico são lock-livre

Original:

checks if the atomic type's operations are lock-free

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(modelo de função) [edit]

Operações em tipos atômicas

Original:

Operations on atomic types

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atomicamente substitui o valor do objeto atômico com um argumento não-atômica

Original:

atomically replaces the value of the atomic object with a non-atomic argument

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(modelo de função) [edit]

atomicamente obtém o valor armazenado em um objeto atómico

Original:

atomically obtains the value stored in an atomic object

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(modelo de função) [edit]

atomicamente substitui o valor do objeto atômico com não atômica argumento e retorna o valor antigo do atômica

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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(modelo de função) [edit]

atomicamente compara o valor do objeto atômico com não atômica argumento e realiza troca atômica se carga igual ou atômica se não

Original:

atomically compares the value of the atomic object with non-atomic argument and performs atomic exchange if equal or atomic load if not

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(modelo de função) [edit]

adiciona um valor não-atômica para um objeto atômico e obtém o valor anterior do nuclear

Original:

adds a non-atomic value to an atomic object and obtains the previous value of the atomic

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(modelo de função) [edit]

subtrai um valor não atômica de um objeto atômico e obtém o valor anterior do nuclear

Original:

subtracts a non-atomic value from an atomic object and obtains the previous value of the atomic

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(modelo de função) [edit]

substitui o objeto atômico com o resultado da lógica e com um argumento não-atômico e obtém o valor anterior do nuclear

Original:

replaces the atomic object with the result of logical AND with a non-atomic argument and obtains the previous value of the atomic

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(modelo de função) [edit]

substitui o objeto atômico com o resultado da lógica OU com um argumento não-atômico e obtém o valor anterior do nuclear

Original:

replaces the atomic object with the result of logical OR with a non-atomic argument and obtains the previous value of the atomic

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(modelo de função) [edit]

substitui o objeto atômico com o resultado da lógica XOR com um argumento não-atômico e obtém o valor anterior do nuclear

Original:

replaces the atomic object with the result of logical XOR with a non-atomic argument and obtains the previous value of the atomic

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(modelo de função) [edit]

Tipo bandeira e operações

Original:

Flag type and operations

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o lock-livre tipo boolean atômica

Original:

the lock-free boolean atomic type

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(classe) [edit]

atomicamente define o sinalizador para true e retorna seu valor anterior

Original:

atomically sets the flag to true and returns its previous value

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(função) [edit]

atomicamente define o valor da bandeira para false

Original:

atomically sets the value of the flag to false

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(função) [edit]

Inicialização

Original:

Initialization

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non-atomic initialization of a default-constructed atomic object
(modelo de função) [edit]

inicialização constante de uma variável atômica de duração de armazenamento estático

Original:

constant initialization of an atomic variable of static storage duration

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(função macro) [edit]
initializes an std::atomic_flag to false
(macro constante) [edit]

Sincronização de memória de encomenda

Original:

Memory synchronization ordering

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define restrições de memória de encomenda para a operação dada atômica

Original:

defines memory ordering constraints for the given atomic operation

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(typedef) [edit]

remove o objeto especificado da árvore de dependência std::memory_order_consume

Original:

removes the specified object from the std::memory_order_consume dependency tree

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(modelo de função) [edit]

memória genérica depende da ordem de sincronização cerca primitiva

Original:

generic memory order-dependent fence synchronization primitive

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(função) [edit]

cerca entre um fio e um manipulador de sinal executado no mesmo segmento

Original:

fence between a thread and a signal handler executed in the same thread

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(função) [edit]