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    std::allocator::allocate

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    <metanoindex/>

     
    C++
     
    Dynamische Speicherverwaltung
    Low-Level-Speicherverwaltung
    Zuweiser
    Original:
    Allocators
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    allocator
    allocator_traits(C++11)
    allocator_arg_t(C++11)
    allocator_arg(C++11)
    uses_allocator(C++11)
    scoped_allocator_adaptor(C++11)
    Initialisierter Speicher
    Original:
    Uninitialized storage
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    uninitialized_copy
    uninitialized_copy_n(C++11)
    uninitialized_fill
    uninitialized_fill_n
    raw_storage_iterator
    get_temporary_buffer
    return_temporary_buffer
    Intelligente Zeiger
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    Smart pointers
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    unique_ptr(C++11)
    shared_ptr(C++11)
    weak_ptr(C++11)
    auto_ptr(veraltet)
    owner_less(C++11)
    enable_shared_from_this(C++11)
    bad_weak_ptr(C++11)
    default_delete(C++11)
    Garbage Collection Unterstützung
    Original:
    Garbage collection support
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    declare_reachable(C++11)
    undeclare_reachable(C++11)
    declare_no_pointers(C++11)
    undeclare_no_pointers(C++11)
    pointer_safety(C++11)
    get_pointer_safety(C++11)
    Verschiedenes
    Original:
    Miscellaneous
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    pointer_traits(C++11)
    addressof(C++11)
    align(C++11)
    C-Bibliothek
    Original:
    C Library
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    std::allocator
    Member-Funktionen
    Original:
    Member functions
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    allocator::allocator
    allocator::~allocator
    allocator::address
    allocator::allocate
    allocator::deallocate
    allocator::max_size
    allocator::construct
    allocator::destroy
    Non-Member-Funktionen
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    Non-member functions
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    operator==
    operator!=
     
    <tbody> </tbody>
    pointer allocate( size_type n, std::allocator<void>::const_pointer hint = 0 );
    Ordnet n * sizeof(T) Bytes initialisierten Speicher durch den Aufruf ::operator new(std::size_t), aber es ist nicht angegeben, wann und wie diese Funktion aufgerufen wird. Der Zeiger hint kann zur Lokalität der Referenz darstellen: die Zuweisungseinrichtung, wenn durch die Ausführung unterstützt, wird versuchen, den neuen Speicherblock so nahe wie möglich zu verteilen .. 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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    Parameter

    n -
    die Anzahl der Objekte, um Speicherplatz für zuzuteilen
    Original:
    the number of objects to allocate storage for
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    hint -
    Zeiger auf eine Speicherstelle in der Nähe
    Original:
    pointer to a nearby memory location
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    Rückgabewert

    Zeiger auf das erste Byte eines Speicherblocks geeigneterweise ausgerichtet und ausreichend, um eine Anordnung von Gegenständen vom Typ n T halten .
    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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    Ausnahmen

    Wirft std::bad_alloc, falls die Zuweisung nicht .
    Original:
    Throws std::bad_alloc if allocation fails.
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    Siehe auch

    [statisch]
    ordnet initialisierten Speicher mit der Zuweisung
    Original:
    allocates uninitialized storage using the allocator
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    (public static Elementfunktion of std::allocator_traits) [edit]