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template class smart_ptr { public: smart_ptr() ; // Create a smart_ptr that is initialized to nullptr. The // reference count should be initialized to nullptr. explicit smart_ptr(T* raw_ptr); // Create a smart_ptr that is initialized to raw_ptr. The // reference count should be one. Make sure it points to // the same pointer as the raw_ptr. smart_ptr(const smart_ptrá rhs); // Copy construct a pointer from rhs. The reference count // should be incremented by one. smart_ptr(smart_ptr&& rhs); // Move construct a pointer from rhs. smart_ptr& operator=(const smart_ptr& rhs); // This assignment should make a shallow copy of the // right-hand side's pointer data. The reference count // should be incremented as appropriate. smart_ptr& operator=(smart_ptr&& rhs); // This move assignment should steal the right-hand side's // pointer data. bool clone (); // If the smart_ptr is either nullptr or has a reference // count of one, this function wil1 do nothing and return // false. Otherwise, the referred to object's reference // count will be decreased and a new deep copy of the

template class smart_ptr { public: smart_ptr() ; // Create a smart_ptr that is initialized to nullptr. The // reference count should be initialized to nullptr. explicit smart_ptr(T* raw_ptr); // Create a smart_ptr that is initialized to raw_ptr. The // reference count should be one. Make sure it points to // the same pointer as the raw_ptr. smart_ptr(const smart_ptrá rhs); // Copy construct a pointer from rhs. The reference count // should be incremented by one. smart_ptr(smart_ptr&& rhs); // Move construct a pointer from rhs. smart_ptr& operator=(const smart_ptr& rhs); // This assignment should make a shallow copy of the // right-hand side's pointer data. The reference count // should be incremented as appropriate. smart_ptr& operator=(smart_ptr&& rhs); // This move assignment should steal the right-hand side's // pointer data. bool clone (); // If the smart_ptr is either nullptr or has a reference // count of one, this function wil1 do nothing and return // false. Otherwise, the referred to object's reference // count will be decreased and a new deep copy of the

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Implement the functions given, instructions of what each function needs to do are given in their respective comments. Only need a smart_ptr.h file. 

template <typename T> class smart_ptr { public: smart_ptr(); // Create a smart_ptr that is initialized to nullptr. The // reference count should be initialized to nullptr. explicit smart_ptr(T* raw_ptr); // Create a smart_ptr that is initialized to raw_ptr. The // reference count should be one. Make sure it points to // the same pointer as the raw_ptr. smart_ptr (const smart_ptr& rhs); // Copy construct a pointer from rhs. The reference count // should be incremented by one. smart_ptr(smart_ptr&& rhs); // Move construct a pointer from rhs. smart_ptr& operator= (const smart_ptr& rhs); // This assignment should make a shallow copy of the // right-hand side's pointer data. The reference count // should be incremented as appropriate. smart_ptr& operator=(smart_ptr&& rhs); // This move assignment should steal the right-hand side's // pointer data. bool clone () ; // If the smart_ptr is either nullptr or has a reference // count of one, this function will do nothing and return // false. Otherwise, the referred to object's reference // count will be decreased and a new deep copy of the
Transcribed Image Text:template <typename T> class smart_ptr { public: smart_ptr(); // Create a smart_ptr that is initialized to nullptr. The // reference count should be initialized to nullptr. explicit smart_ptr(T* raw_ptr); // Create a smart_ptr that is initialized to raw_ptr. The // reference count should be one. Make sure it points to // the same pointer as the raw_ptr. smart_ptr (const smart_ptr& rhs); // Copy construct a pointer from rhs. The reference count // should be incremented by one. smart_ptr(smart_ptr&& rhs); // Move construct a pointer from rhs. smart_ptr& operator= (const smart_ptr& rhs); // This assignment should make a shallow copy of the // right-hand side's pointer data. The reference count // should be incremented as appropriate. smart_ptr& operator=(smart_ptr&& rhs); // This move assignment should steal the right-hand side's // pointer data. bool clone () ; // If the smart_ptr is either nullptr or has a reference // count of one, this function will do nothing and return // false. Otherwise, the referred to object's reference // count will be decreased and a new deep copy of the
// object will be created. This new copy will be the // object that this smart_ptr points and its reference // count will be one. int ref_count () const; // Returns the reference count of the pointed to data. T& operator* () ; // The dereference operator shall return a reference to // the referred object. Throws null_ptr_exception on // invalid access. T* operator->(); // The arrow operator shall return the pointer ptr_. // Throws null_ptr_exception on invalid access. * smart_ptr(); // deallocate all dynamic memory private: // pointer to the referred object // pointer to a reference count T* ptr_; int* ref_; } ;
Transcribed Image Text:// object will be created. This new copy will be the // object that this smart_ptr points and its reference // count will be one. int ref_count () const; // Returns the reference count of the pointed to data. T& operator* () ; // The dereference operator shall return a reference to // the referred object. Throws null_ptr_exception on // invalid access. T* operator->(); // The arrow operator shall return the pointer ptr_. // Throws null_ptr_exception on invalid access. * smart_ptr(); // deallocate all dynamic memory private: // pointer to the referred object // pointer to a reference count T* ptr_; int* ref_; } ;
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