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std::pmr::polymorphic_allocator::deallocate_bytes(3) | C++ Standard Libary | std::pmr::polymorphic_allocator::deallocate_bytes(3) |
NAME¶
std::pmr::polymorphic_allocator::deallocate_bytes - std::pmr::polymorphic_allocator::deallocate_bytes
Synopsis¶
void deallocate_bytes( void* p,
std::size_t nbytes, (since C++20)
std::size_t alignment = alignof(std::max_align_t) );
Deallocates the storage pointed to by p, which must have been allocated from
a
std::pmr::memory_resource x that compares equal to *resource(). using
x.allocate(nbytes, alignment), typically through a call to
allocate_bytes(nbytes,
alignment).
Equivalent to resource()->deallocate(p, nbytes, alignment);
Parameters¶
p - pointer to memory to deallocate
nbytes - the number of bytes originally allocated
alignment - the alignment originally allocated
Exceptions¶
Throws nothing.
Notes¶
This function was introduced for use with the fully-specialized
allocator
std::pmr::polymorphic_allocator<>, but it may be useful in any
specialization.
See also¶
deallocate_object Frees raw memory obtained by allocate_object
(C++20) (public member function)
delete_object Destroys and deallocates an object
(C++20) (public member function)
deallocate deallocates storage using the allocator
[static] (public static member function of
std::allocator_traits<Alloc>)
deallocate deallocates memory
(public member function of std::pmr::memory_resource)
2022.07.31 | http://cppreference.com |