std::experimental::pmr::polymorphic_allocator
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< cpp | experimental
C++
Library fundamentals
Polymorphic allocator library
polymorphic_allocator | ||||
Convenience aliases for containers using polymorphic_allocator | ||||
| Memory resource classes | ||||
| Global memory resources | ||||
| Type-erased allocator support for existing classes | ||||
std::experimental::pmr::polymorphic_allocator
| Defined in header <experimental/memory_resource>
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| template< class T > class polymorphic_allocator; |
(library fundamentals TS) | |
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.
Contents |
[edit] Member types
| Member type | definition |
value_type
|
T
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[edit] Member functions
constructs a polymorphic_allocator (public member function) | |
| (destructor) (implicitly declared) |
implicitly declared destructor (public member function) |
| copy assignment operator (public member function) | |
Public member functions | |
| allocate memory (public member function) | |
| deallocate memory (public member function) | |
| constructs an object in allocated storage (public member function) | |
| destroys an object in allocated storage (public member function) | |
create a new polymorphic_allocator for use by a container's copy constructor (public member function) | |
| returns a pointer to the underlying memory resource (public member function) | |
[edit] Non-member functions
compare two polymorphic_allocators (function) |
