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std::allocator::allocate

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< cpp‎ | memory‎ | allocator

 
 
La gestion dynamique de la mémoire
Faible niveau de gestion de la mémoire
Répartiteurs
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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
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)
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
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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!=
 
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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Sommaire

[modifier] 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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[modifier] 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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[modifier] Exceptions

Lance std::bad_alloc si l'allocation échoue .
Original:
Throws std::bad_alloc if allocation fails.
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[modifier] 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]