Anyone who thinks a small C++ standard follows a significant C++ standard is wrong. C++23 provides powerful extensions to C++20. These extensions include the core language, particularly the standard library. Today, I present a small but very impactful feature of the core language: deducing this. Deducing this, sometimes also called explicit object parameter, allows it […]
C++23 will be the next C++ standard after C++20. This new standard significantly improves C++ but is less game-changing than C++98, C++11, or C++20. C++23 is more in the tradition of C++17. To understand this next step in the evolution of C++, let me put the C++ standards into the historical context. The C++ Standards […]
In my last post “Monitor Object” I implemented a thread-safe queue. I made two serious errors. Sorry. Today, I will fix these issues. First, I want to show you again the erroneous implementation from my last post to understand the context. // monitorObject.cpp #include <condition_variable> #include <functional> #include <queue> #include <iostream> #include <mutex> #include <random> […]
The monitor object design pattern synchronizes concurrent member function execution to ensure that only one member function at a time runs within an object. It also allows object’s member functions to schedule their execution sequences cooperatively. (Pattern-Oriented Software Architecture: Patterns for Concurrent and Networked Objects) The Monitor Object design pattern synchronizes concurrent member function execution […]
The active object design pattern decouples method execution from method invocation for objects that each reside in their own thread of control.The goal is to introduce concurrency, by using asynchronous method invocation and a scheduler for handling requests. (Wikipedia:Active Object)
I continue my journey with concurrency patterns in today’s post. The Thread-Safe Interface fits very well when the critical sections are just objects.
Locking is a classical way to protect a shared, mutable state. Today, I will present the two variants, Scoped Locking and Strategized Locking.