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std::recursive_mutex

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Threads
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Threads
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thread(C++11)
this_thread namespace
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this_thread namespace
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Exclusão mútua
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Mutual exclusion
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mutex(C++11)
timed_mutex(C++11)
recursive_mutex(C++11)
recursive_timed_mutex(C++11)
Gestão de bloqueio genérico
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Generic lock management
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lock_guard(C++11)
unique_lock(C++11)
defer_lock_t
try_to_lock_t
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(C++11)
lock(C++11)
try_lock(C++11)
defer_lock
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(C++11)
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Condition variables
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std::recursive_mutex
Funções de membro
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Member functions
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recursive_mutex::recursive_mutex
Bloqueio
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Locking
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recursive_mutex::lock
recursive_mutex::try_lock
recursive_mutex::unlock
Identificador nativo
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Native handle
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recursive_mutex::native_handle
 
Defined in header <mutex>
class recursive_mutex;
(a partir do C++ 11)
A classe recursive_mutex é um primitivo de sincronização que pode ser usado para proteger os dados compartilhados de ser acessado simultaneamente por vários segmentos.
Original:
The recursive_mutex class is a synchronization primitive that can be used to protect shared data from being simultaneously accessed by multiple threads.
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recursive_mutex ofertas exclusivas, semântica de propriedade recursiva:
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recursive_mutex offers exclusive, recursive ownership semantics:
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  • Um segmento chamado' possui um recursive_mutex por um período de tempo que começa quando ele chama com êxito ou lock ou try_lock. Durante este período, a linha poderá fazer chamadas adicionais para lock ou try_lock. O período de posse termina quando o segmento faz um número correspondente de chamadas para unlock.
    Original:
    A calling thread owns a recursive_mutex for a period of time that starts when it successfully calls either lock or try_lock. During this period, the thread may make additional calls to lock or try_lock. The period of ownership ends when the thread makes a matching number of calls to unlock.
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  • Quando um segmento possui um recursive_mutex, todos os outros segmentos irá bloquear (para chamadas para lock) ou receber um valor de retorno false (para try_lock) se tentarem reivindicar a posse do recursive_mutex.
    Original:
    When a thread owns a recursive_mutex, all other threads will block (for calls to lock) or receive a false return value (for try_lock) if they attempt to claim ownership of the recursive_mutex.
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  • O número máximo de vezes que um recursive_mutex pode ser bloqueado não é especificado, mas após esse número é atingido, as chamadas para lock vai jogar std::system_error e chama a try_lock voltará false.
    Original:
    The maximum number of times that a recursive_mutex may be locked is unspecified, but after that number is reached, calls to lock will throw std::system_error and calls to try_lock will return false.
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O comportamento de um programa é indefinido se um recursive_mutex é destruído enquanto ainda pertence por alguma thread. A classe recursive_mutex não é copiável.
Original:
The behavior of a program is undefined if a recursive_mutex is destroyed while still owned by some thread. The recursive_mutex class is non-copyable.
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Índice

[editar] Tipos de membro

Tipo de membro
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Member type
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Definition
native_handle_type
Definida pela implementação
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implementation-defined
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[editar] Funções de membro

constrói o mutex
Original:
constructs the mutex
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(função pública membro) [edit]
Bloqueio
Original:
Locking
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bloqueia o mutex, blocos se o mutex não está disponível
Original:
locks the mutex, blocks if the mutex is not available
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(função pública membro) [edit]
tenta bloquear o mutex, retorna se o mutex não está disponível
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tries to lock the mutex, returns if the mutex is not available
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(função pública membro) [edit]
destrave o mutex
Original:
unlocks the mutex
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(função pública membro) [edit]
Identificador nativo
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Native handle
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retorna o identificador segmento subjacente definida pela implementação
Original:
returns the underlying implementation-defined thread handle
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(função pública membro) [edit]