Namespace
Varianti

std::allocator

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< cpp‎ | memory

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C++
 
Gestione della memoria dinamica
Basso livello di gestione della memoria
Allocatori
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 inizializzata stoccaggio
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
Puntatori intelligenti
Original:
Smart pointers
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unique_ptr(C++11)
shared_ptr(C++11)
weak_ptr(C++11)
auto_ptr(deprecato)
owner_less(C++11)
enable_shared_from_this(C++11)
bad_weak_ptr(C++11)
default_delete(C++11)
Garbage collection supporto
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)
Varie
Original:
Miscellaneous
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pointer_traits(C++11)
addressof(C++11)
align(C++11)
C Library
Original:
C Library
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std::allocator
Membri funzioni
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 membri funzioni
Original:
Non-member functions
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operator==
operator!=
 
Elemento definito nell'header <memory>
template< class T >
struct allocator;
 (1)
template<>
struct allocator<void>;
 (2)
Il modello di classe std::allocator è il Allocator predefinita utilizzata da tutti i contenitori della libreria standard se non specificato dall'utente allocatore è fornito. L'allocatore di default è senza stato, vale a dire, tutte le istanze del allocatore dato sono intercambiabili, risultano uguali e può rilasciare la memoria allocata da qualsiasi altra istanza del tipo di allocatore stesso.
Original:
The std::allocator class template is the default Allocator used by all standard library containers if no user-specified allocator is provided. The default allocator is stateless, that is, all instances of the given allocator are interchangeable, compare equal and can deallocate memory allocated by any other instance of the same allocator type.
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Specializzazione per void mancano le typedef membri reference, const_reference, size_type e difference_type. Questa specializzazione dichiara non funzioni membro.
Original:
Specialization for void lacks the member typedefs reference, const_reference, size_type and difference_type. This specialization declares no member functions.
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All custom allocators also must be stateless. (fino al c++11)
Custom allocators may contain state. Each container or another allocator-aware object stores an instance of the supplied allocator and controls allocator replacement through std::allocator_traits. (dal C++11)

Indice

[modifica] Membri tipi

Tipo
Original:
Type
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 Definition
value_type T
pointer T*
const_pointer const T*
reference T&
const_reference const T&
size_type std::size_t
difference_type std::ptrdiff_t
rebind template< class U > struct rebind { typedef allocator<U> other; };

[modifica] Membri funzioni
crea una nuova istanza allocatore
Original:
creates a new allocator instance
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(metodo pubblico) [modifica]
distrugge un'istanza allocatore
Original:
destructs an allocator instance
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(metodo pubblico) [modifica]
ottiene l'indirizzo di un oggetto, anche se operator& è sovraccarico
Original:
obtains the address of an object, even if operator& is overloaded
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(metodo pubblico) [modifica]
alloca memoria non inizializzata
Original:
allocates uninitialized storage
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(metodo pubblico) [modifica]
dealloca stoccaggio
Original:
deallocates storage
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(metodo pubblico) [modifica]
restituisce la dimensione massima supportata di allocazione
Original:
returns the largest supported allocation size
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(metodo pubblico) [modifica]
costruisce un oggetto nella memoria allocata
Original:
constructs an object in allocated storage
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(metodo pubblico) [modifica]
distrugge un oggetto nella memoria allocata
Original:
destructs an object in allocated storage
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(metodo pubblico) [modifica]

[modifica] Non membri funzioni
Confronta due istanze allocatore
Original:
compares two allocator instances
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(metodo pubblico) [modifica]

[modifica] Vedi anche

(C++11)
fornisce informazioni sui tipi di allocatore
Original:
provides information about allocator types
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(classe template) [modifica]
(C++11)
implementa multilivello allocatore per contenitori multi-livello
Original:
implements multi-level allocator for multi-level containers
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(classe template) [modifica]
(C++11)
controlla se il tipo specificato supporta usi-allocatore di costruzione
Original:
checks if the specified type supports uses-allocator construction
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(classe template) [modifica]
Estratto da "https://it.cppreference.com/mwiki/index.php?title=cpp/memory/allocator&oldid=26095"