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    std::allocator::allocate

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    <metanoindex/>

     
    C++
     
    La gestion dynamique de la mémoire
    Faible niveau de gestion de la mémoire
    Répartiteurs
    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)
    Non initialisée stockage
    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
    Pointeurs intelligents
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    Smart pointers
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    unique_ptr (C++11)
    shared_ptr (C++11)
    weak_ptr (C++11)
    auto_ptr (obsolète)
    owner_less (C++11)
    enable_shared_from_this (C++11)
    bad_weak_ptr (C++11)
    default_delete (C++11)
    Soutien garbage collection
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    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)
    Divers
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    Miscellaneous
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    pointer_traits (C++11)
    addressof (C++11)
    align (C++11)
    Bibliothèque C
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    C Library
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    std::allocator
    Les fonctions membres
    Original:
    Member functions
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    allocator::allocator
    allocator::~allocator
    allocator::address
    allocator::allocate
    allocator::deallocate
    allocator::max_size
    allocator::construct
    allocator::destroy
    Tiers fonctions
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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 );
    Alloue n * sizeof(T) octets de stockage non initialisée en appelant ::operator new(std::size_t), mais il n'est pas spécifié quand et comment cette fonction est appelée. Le hint pointeur peut être utilisé pour fournir la localité de référence: l'allocateur, si elle est soutenue par la mise en œuvre, tentera d'allouer le nouveau bloc de mémoire aussi proche que possible de 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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    Paramètres

    n -
    le nombre d'objets à allouer de la mémoire pour
    Original:
    the number of objects to allocate storage for
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    hint -
    pointeur vers un emplacement de mémoire voisine
    Original:
    pointer to a nearby memory location
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    Retourne la valeur

    Pointeur vers le premier octet d'un bloc de mémoire correctement alignée et suffisante pour maintenir un tableau d'objets de type n de T .
    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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    Exceptions

    Lance std::bad_alloc si l'allocation échoue .
    Original:
    Throws std::bad_alloc if allocation fails.
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    Voir aussi

    [
    statique
    Original:
    static
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    ]
    alloue non initialisée stockage à l'aide de l'allocateur
    Original:
    allocates uninitialized storage using the allocator
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    (fonction membre publique statique de std::allocator_traits) [edit]