Inheritance
Inheritance and composition are two ways in which classes are tied together in an object-oriented design. In this section we want to examine the connection between inheritance-based designs and the cost of constructors and destructors. We drive this discussion with a practical example: the implementation of thread synchronization constructs.[1] In multithreaded applications, you often need to provide thread synchronization to restrict concurrent access to shared resources. Thread synchronization constructs appear in varied forms. The three most common ones are semaphore, mutex, and critical section.
[1] Chapter 15 provides more information on the fundamental concepts and terminology of multithreaded programming.
A semaphore provides ...
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