Concurrency and Multithreading

Question

I\'m not very experienced with subjects such as Concurrency and Multithreading. In fact, in most of my web-development career I had never needed to touch these subjects.

Answer 1

I'm studying the subject (right now :D) and one of the things that seems a very important difference on concurrency between languages is the language expressive power on concurrency.

For example C++ has no native support to concurrency and it rely on functions provided by the OS.

Java is a step above because has some built-in methods while others are left to the OS (threads scheduling or priority for example).

Instead one of what seems to be one of the best programming languages supporting concurrency is Ada which has in fact a whole concurrency-model built in (scheduling and priority included).

Why is this important? Because of the portability!

Using a language with good concurrency expressive power allows you to bring your concurrent program to Windows, linux or Mac withouth great fears about the way it will work. For example: thread priority will be applied in the same way in your Ada program running in windows, linux or Mac while it can be really different (ignored in some OS and applied in others) with Java or C++.

This is what seem to me by the course I'm taking at the university right now :)