Archive of posts from 2017

• Oct 15, 2017: Debugging Concurrency Is Hard, but We Can Do Something About It!

  When we have to debug applications that use concurrency, perhaps written in Java, all we get from the debugger is a list of threads, perhaps some information about held locks, and the ability to step through each thread separately.

• Oct 7, 2017: Hello Canterbury!

  In case you have been reading the previous post or following me on Twitter or Facebook, you might know that I had the silly idea of cycling from Linz in Austria all the way to Canterbury in England.

• Sep 6, 2017: Building High-level Debuggers for Concurrent Languages with Truffle: The Missing Bits

  Note: This post is meant for people familiar with Truffle. For introductory material, please see for instance this list.

• Aug 2, 2017: #bikexit17, Hello England, Goodbye EU?

  Academics are infamous for their project names and abbreviations, so, let’s call this #bikexit17…

• Jul 5, 2017: A 10 Year Journey, Stop 5: Growing the SOM Family

• Jun 6, 2017: A 10 Year Journey, Stop 4: Concurrency and Tooling

  This post, the fourth in the series, is about my current work on concurrency and tooling. As mentioned before, I believe that there is not a single concurrency model that is suitable for all problems we might want to solve. Actually, I think, this can be stated even stronger: Not a single concurrency model is appropriate for a majority of the problems we want to solve.

• May 14, 2017: A 10 Year Journey, Stop 3: Performance, Performance, and Metaprogramming

  The third post of this series is about how I started using Truffle and Graal, pretty much 4 years ago. It might be in parts ranty, but I started using it when it was in a very early stage. So, things are a lot better today.

• May 7, 2017: A 10 Year Journey, Stop 2: Supporting All Kind of Concurrency Models on a Simple VM

  Last week, I started a series of posts to go over some of the projects I was involved in during my first 10 years working on language implementations. Today’s post focuses on my time as PhD student.

• Apr 30, 2017: 10 Years of Language Implementations

  First Stop: VMs, Compilers, and Modularity

• Mar 7, 2017: SOMns 0.2 Release with CSP, STM, Threads, and Fork/Join

  Since SOMns is a pure research project, we aren’t usually doing releases for SOMns yet. However, we added many different concurrency abstractions since December and have plans for bigger changes. So, it seems like a good time to wrap up another step, and get it into a somewhat stable shape.

• Jan 10, 2017: Communicating Sequential Processes for Newspeak/SOMns

  One possible way for modeling concurrent systems is Tony Hoare’s classic approach of having isolated processes communicate via channels, which is called Communicating Sequential Processes (CSP). Today, we see the approach used for instance in Go and Clojure.

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