Login | Register   
RSS Feed
Download our iPhone app
Browse DevX
Sign up for e-mail newsletters from DevX

By submitting your information, you agree that devx.com may send you DevX offers via email, phone and text message, as well as email offers about other products and services that DevX believes may be of interest to you. DevX will process your information in accordance with the Quinstreet Privacy Policy.

Tip of the Day
Language: C++
Expertise: Advanced
Jan 18, 2000



Application Security Testing: An Integral Part of DevOps

Declaring a Volatile Member Function

You're probably familiar with const member functions such as:

  class A
    int get_x() const; // can't change A's state

C++ also supports volatile member functions. You declare a member function with the volatile specifier to ensure that it can be called safely for a volatile object:

  class B
    int x;
    void f() volatile; // volatile member function

  int main()
    volatile B b;  // b is a volatile object
    b.f();  // call a volatile member function safely

The object b is declared volatile. Calling a non-volatile member function from this object is unsafe, because b's state might have been changed by a different thread in the meantime. To ensure that f() can be called safely for a volatile object, it's declared volatile too.

Danny Kalev
Comment and Contribute






(Maximum characters: 1200). You have 1200 characters left.



We have made updates to our Privacy Policy to reflect the implementation of the General Data Protection Regulation.
Thanks for your registration, follow us on our social networks to keep up-to-date