std::get_temporary_buffer

 

C++

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Operaciones de biblioteca Atómica (C++11)

Tema Biblioteca de ayuda (C++11)

 

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Escriba apoyo (basic types, RTTI, type traits)

Gestión de memoria dinámica

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Objetos Function

initializer_list (C++11)

bitset

hash (C++11)

Operadores relacionales Original: Relational operators The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

rel_ops::operator!= rel_ops::operator> rel_ops::operator<= rel_ops::operator>=

Pares y tuplas Original: Pairs and tuples The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

pair

tuple (C++11)

piecewise_construct_t (C++11)

piecewise_construct (C++11)

Cambiar, hacia adelante y mover Original: Swap, forward and move The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

swap

forward (C++11)

move (C++11)

move_if_noexcept (C++11)

declval (C++11)

 

Gestión de memoria dinámica

Bajo la gestión de memoria de nivel
Los asignadores Original: Allocators The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
allocator
allocator_traits (C++11)
allocator_arg_t (C++11)
allocator_arg (C++11)
uses_allocator (C++11)
scoped_allocator_adaptor (C++11)
Inicializar el almacenamiento Original: Uninitialized storage The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
uninitialized_copy
uninitialized_copy_n (C++11)
uninitialized_fill
uninitialized_fill_n
raw_storage_iterator
get_temporary_buffer
return_temporary_buffer
Punteros inteligentes Original: Smart pointers The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
unique_ptr (C++11)
shared_ptr (C++11)
weak_ptr (C++11)
auto_ptr (obsoleto)
owner_less (C++11)
enable_shared_from_this (C++11)
bad_weak_ptr (C++11)
default_delete (C++11)
Garbage soporte colección Original: Garbage collection support The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
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)
Varios Original: Miscellaneous The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
pointer_traits (C++11)
addressof (C++11)
align (C++11)
C Library Original: C Library The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
malloc calloc	realloc free

 

Defined in header <memory>
template< class T > std::pair< T*, std::ptrdiff_t > get_temporary_buffer( std::ptrdiff_t count )

Asigna almacenamiento suficiente para almacenar hasta count objetos adyacentes de T tipo. Si no hay suficiente memoria para todos los objetos count, asigna menos de count, si es posible .

Original:

Allocates storage sufficient to store up to count adjacent objects of type T. If there is insufficient memory for all count objects, allocates less than count, if possible.

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Parámetros

count

-

el número de objetos para asignar Original: the number of objects to allocate The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

Valor de retorno

Un std::pair sostiene un puntero al comienzo del almacenamiento asignado y el número de objetos que se ajustan en el almacenamiento que se ha asignado realmente (que puede ser cero) .

Original:

An std::pair holding a pointer to the beginning of the allocated storage and the number of objects that fit in the storage that was actually allocated (may be zero).

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Excepciones

noexcept specification:  

noexcept

  (ya que C + +11)

Ejemplo

#include <algorithm>
#include <iostream>
#include <memory>
#include <string>
 
int main()
{
    const std::string s[] = {"string", "1", "test", "..."};
    std::string* p = std::get_temporary_buffer<std::string>(4).first;
 
    std::copy(std::begin(s), std::end(s),
              std::raw_storage_iterator<std::string*, std::string>(p));
 
    for (std::string* i = p; i != p+4; ++i) {
        std::cout << *i << '\n';
        i->~basic_string<char>();
    }
    std::return_temporary_buffer(p);
}

Output:

string
1
test
...

Ver también

return_temporary_buffer	libera almacenamiento sin inicializar Original: frees uninitialized storage The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (función de plantilla)