std::pmr::polymorphic_allocator<T>:: allocate_bytes
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| Member functions | ||||
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(
C++20/26*
)
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polymorphic_allocator::allocate_bytes
(C++20)
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| Non-member functions | ||||
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(until C++20)
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void
*
allocate_bytes
(
std::
size_t
nbytes,
std:: size_t alignment = alignof ( std:: max_align_t ) ) ; |
(since C++20) | |
Allocates nbytes bytes of storage at specified alignment alignment using the underlying memory resource. Equivalent to return resource ( ) - > allocate ( nbytes, alignment ) ; .
Parameters
| nbytes | - | the number of bytes to allocate |
| alignment | - | the alignment to use |
Return value
A pointer to the allocated storage.
Notes
This function was introduced for use with the fully-specialized allocator std:: pmr :: polymorphic_allocator <> , but it may be useful in any specialization.
The return type is void * (rather than, e.g., std:: byte * ) to support conversion to an arbitrary pointer type U * by static_cast < U * > .
Exceptions
May throw any exceptions thrown by the call to resource ( ) - > allocate .
See also
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(C++20)
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allocates raw memory suitable for an object or an array
(public member function) |
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(C++20)
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allocates and constructs an object
(public member function) |
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allocate memory
(public member function) |
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[static]
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allocates uninitialized storage using the allocator
(public static member function of
std::allocator_traits<Alloc>
)
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allocates memory
(public member function of
std::pmr::memory_resource
)
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