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std::allocator::allocate

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< cpp‎ | memory‎ | allocator

 
 
Gestión de memoria dinámica
Bajo la gestión de memoria de nivel
Los asignadores
Original:
Allocators
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Inicializar el almacenamiento
Original:
Uninitialized storage
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Punteros inteligentes
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Smart pointers
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(C++11)
(C++11)
(C++11)
(obsoleto)
(C++11)
Garbage soporte colección
Original:
Garbage collection support
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Varios
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Miscellaneous
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(C++11)
(C++11)
C Library
Original:
C Library
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std::allocator
Las funciones miembro
Original:
Member functions
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allocator::allocate
Terceros funciones
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Non-member functions
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pointer allocate( size_type n, std::allocator<void>::const_pointer hint = 0 );
Asigna n * sizeof(T) bytes de almacenamiento sin inicializar llamando ::operator new(std::size_t), pero es sin especificar cuándo y cómo esta función se llama. El hint puntero puede ser utilizado para proporcionar localidad de referencia: el asignador, si es compatible con la aplicación, intentará asignar el nuevo bloque de memoria lo más cerca posible a hint .
Original:
Allocates n * sizeof(T) bytes of uninitialized storage by calling ::operator new(std::size_t), but it is unspecified when and how this function is called. The pointer hint may be used to provide locality of reference: the allocator, if supported by the implementation, will attempt to allocate the new memory block as close as possible to hint.
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Contenido

[editar] Parámetros

n -
el número de objetos a asignar almacenamiento para
Original:
the number of objects to allocate storage for
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hint -
puntero a una ubicación de memoria cercano
Original:
pointer to a nearby memory location
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[editar] Valor de retorno

Puntero al primer byte de un bloque de memoria convenientemente alineada y suficiente para contener una matriz de objetos n de T tipo .
Original:
Pointer to the first byte of a memory block suitably aligned and sufficient to hold an array of n objects of type T.
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[editar] Excepciones

Lanza std::bad_alloc si la asignación no .
Original:
Throws std::bad_alloc if allocation fails.
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[editar] Ver también

[estático]
asigna almacenamiento sin inicializar utilizando el asignador
Original:
allocates uninitialized storage using the allocator
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(función miembro público estático de std::allocator_traits) [editar]