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std::allocator::allocate

提供: cppreference.com
< cpp‎ | memory‎ | allocator

 
 
動的なメモリ管理
低レベルのメモリ管理
アロケータ
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)
ストレージを初期化されていない
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
スマートポインタ
Original:
Smart pointers
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unique_ptr(C++11)
shared_ptr(C++11)
weak_ptr(C++11)
auto_ptr(廃止予定)
owner_less(C++11)
enable_shared_from_this(C++11)
bad_weak_ptr(C++11)
default_delete(C++11)
ガベージコレクションをサポートしています
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)
その他
Original:
Miscellaneous
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pointer_traits(C++11)
addressof(C++11)
align(C++11)
Cライブラリ
Original:
C Library
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std::allocator
メンバ関数
Original:
Member functions
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allocator::allocator
allocator::~allocator
allocator::address
allocator::allocate
allocator::deallocate
allocator::max_size
allocator::construct
allocator::destroy
非メンバ関数
Original:
Non-member functions
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operator==
operator!=
 
pointer allocate( size_type n, std::allocator<void>::const_pointer hint = 0 );
割り当てn * sizeof(T)::operator new(std::size_t)を呼び出すことによって初期化されていないバイトの記憶領域が、いつ、どのようにこの関数が呼び出されると、それは特定されていません。 hintを参照の局所性を提供するために使用することができるポインタ:アロケータは、実装によってサポートされている場合、hintにできるだけ近い新しいメモリブロックを割り当てようとします.
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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目次

[編集] パラメータ

n -
にストレージを割り当てたオブジェクトの数
Original:
the number of objects to allocate storage for
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hint -
近くのメモリ位置へのポインタ
Original:
pointer to a nearby memory location
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[編集] 値を返します

適切にアライメントされたメモリ·ブロックの最初のバイトへのポインタと型nTオブジェクトの配列を保持するのに十分な.
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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[編集] 例外

割り当てが失敗した場合にスローされますstd::bad_alloc.
Original:
Throws std::bad_alloc if allocation fails.
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[編集] も参照してください

[静的]
アロケータを使用して初期化されていないストレージが割り当てられます
Original:
allocates uninitialized storage using the allocator
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(パブリック静的メンバ関数of std::allocator_traits) [edit]