std::experimental::pmr::polymorphic_allocator - cppreference.com
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Merged into ISO C++ The functionality described on this page was merged into the mainline ISO C++ standard as of 3/2016, see std::pmr::polymorphic_allocator (since C++17) |
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
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Member functions
constructs a polymorphic_allocator (public member function) [edit] | |
(destructor) (implicitly declared) |
implicitly declared destructor (public member function) [edit] |
| copy assignment operator (public member function) [edit] | |
Public member functions | |
| allocate memory (public member function) [edit] | |
| deallocate memory (public member function) [edit] | |
| constructs an object in allocated storage (public member function) [edit] | |
| destroys an object in allocated storage (public member function) [edit] | |
create a new polymorphic_allocator for use by a container's copy constructor (public member function) [edit] | |
| returns a pointer to the underlying memory resource (public member function) [edit] | |