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std::experimental::pmr::polymorphic_allocator(3) C++ Standard Libary std::experimental::pmr::polymorphic_allocator(3)


std::experimental::pmr::polymorphic_allocator - std::experimental::pmr::polymorphic_allocator


Defined in header <experimental/memory_resource>
template< class T > (library fundamentals TS)
class polymorphic_allocator;

The class template std::experimental::pmr::polymorphic_allocator is an Allocator
whose allocation behavior depends on the memory resource it is constructed with.
Thus, different instances of polymorphic_allocator can exhibit entirely different
allocation behavior. This runtime polymorphism allows objects using
polymorphic_allocator to behave as if they used different allocator types at run
time despite the identical static allocator type.

Member types

Member type definition
value_type T

Member functions

constructor constructs a polymorphic_allocator
(public member function)
destructor implicitly declared destructor
(implicitly declared) (public member function)
operator= copy assignment operator
(public member function)

Public member functions

allocate allocate memory
(public member function)
deallocate deallocate memory
(public member function)
construct constructs an object in allocated storage
(public member function)
destroy destroys an object in allocated storage
(public member function)
create a new polymorphic_allocator for use by
select_on_container_copy_construction a container's copy constructor
(public member function)
returns a pointer to the underlying memory
resource resource
(public member function)

Non-member functions

operator== compare two polymorphic_allocators
operator!= (function)


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