The Unified Modeling Language (UML) class diagram below depicts the classes
in the Smart-Pointer library. Non-abstract user-defined derived types that
extend sp_smart_pointer_t inherit an obligation to define the free deferred
binding according to the free_interface abstract interface defined in
sp_resource_m. The user-defined free subroutine must free the associated
resource, which usually means deallocating the associated memory.
---
title: Smart Pointers Class Diagram
---
classDiagram
class sp_resource_t {
free()
}
<<Abstract>> sp_resource_t
sp_resource_t--*sp_reference_counter_t
class sp_reference_counter_t {
-count_: integer, pointer
-object_: sp_resource_t
grab()
release()
}
sp_reference_counter_t--*sp_smart_pointer_t
class sp_smart_pointer_t {
-counter_:counter_t
release_handle()
start_counter()
}
<<Abstract>> sp_smart_pointer_t
sp_smart_pointer_t--|>sp_resource_t