COMS W4995 C++ Deep Dive for C Programmers

Smart Pointers

Lecture outline

sharedptr1.cpp

1. Introduction to smart pointer

   • Motivation: RAII for any heap-allocated object
   • high-level code overview of create_vec1()
   • auto revisited

2. SmartPtr<T> implementation

   • Code walk-thru, along with reference counting diagrams
   • Revisit create_vec1(), along with memory layout diagrams

3. MakeSmartPtr<T> function template

4. shared_ptr<T> and make_shared<T>()

sharedptr2.cpp

1. make_shared<T>() combines heap allocations

2. shared_ptr to an array and custom deleter

3. Aliasing

4. weak_ptr

uniqueptr.cpp

1. unique_ptr