Pro TBB: C++ Parallel Programming with Threading Building Blocks

© Intel Corporation 2019

Michael Voss, Rafael  Asenjo and James ReindersPro TBBhttps://doi.org/10.1007/978-1-4842-4398-5_5

5. Synchronization: Why and How to Avoid It

Michael Voss¹ , Rafael Asenjo² and James Reinders³

(1)

Austin, Texas, USA

(2)

Málaga, Spain

(3)

Portland, Oregon, USA

 

Let us underscore this up front: if you don’t need to use the synchronization features described in this chapter, so much the better. Here, we cover synchronization mechanisms and alternatives to achieve mutual exclusion. “Synchronization” and “exclusion” should have quite a negative connotation for parallel programmers caring about performance. These are operations that we want to avoid because they cost time and, in some cases, processor resources and energy. If we can ...