Blogs (28) >>
ICFP 2017
Sun 3 - Sat 9 September 2017 Oxford, United Kingdom
Tue 5 Sep 2017 10:30 - 10:52 at L1 - Low-level and Systems Programming Chair(s): Sam Tobin-Hochstadt

Relaxed Radix Balanced Trees (RRB-Trees) is one of the latest members in a family of persistent tree based data-structures that combine wide branching factors with simple and relatively flat structures. Like the battle-tested immutable sequences of Clojure and Scala, they have ffectively constant lookup and updates, good cache utilization, but also logarithmic concatenation and slicing. Our goal is to bring the benefits of persistent data structures to the discipline of systems programming via generic yet efficient immutable vectors supporting transient batch updates. We describe a C++ implementation that can be integrated in the runtime of higher level languages with a C core (Lisps like Guile or Racket, but also Python or Ruby), thus widening the access to these persistent data structures.

In this work we propose (1) an Embedding RRB-Tree (ERRB-Tree) data structure that efficiently stores arbitrary unboxed types, (2) a technique for implementing tree operations orthogonal to optimizations for a more compact representation of the tree, (3) a policy-based design to support multiple memory management and reclamation mechanisms (including automatic garbage collection and reference counting), (4) a model of transience based on move-semantics and reference counting, and (5) a definition of transience for confluent meld operations. Combining these techniques a performance comparable to that of mutable arrays can be achieved in many situations, while using the data structure in a functional way.

I am Berlin based freelance software engineer, with a focus on interactive software, modern C++, functional programming and open source strategy. Before I worked for Ableton and I have been involved in various music technology projects. I have also developed for the GNU project and cofounded a Hacklab in Granada.

Tue 5 Sep
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10:30 - 12:00: Research Papers - Low-level and Systems Programming at L1
Chair(s): Sam Tobin-HochstadtIndiana University
icfp-2017-papers10:30 - 10:52
Juan Pedro Bolívar PuenteIndependent Consultant, Sinusoidal Engineering
DOI Pre-print
icfp-2017-papers10:52 - 11:15
Jonathan ProtzenkoMicrosoft Research, n.n., Jean-Karim ZinzindohouéInria, France, Aseem RastogiMicrosoft Research, Tahina RamananandroMicrosoft Research, n.n., Peng WangMassachusetts Institute of Technology, USA, Santiago Zanella-BéguelinMicrosoft Research, n.n., Antoine Delignat-LavaudMicrosoft Research, n.n., Cătălin HriţcuInria Paris, Karthikeyan BhargavanInria, France, Cédric FournetMicrosoft Research, n.n., Nikhil SwamyMicrosoft Research, n.n.
icfp-2017-papers11:15 - 11:37
Scott OwensUniversity of Kent, UK, Michael NorrishData61 at CSIRO, Australia / Australian National University, Australia, Ramana KumarData61 at CSIRO, Australia / UNSW, Australia, Magnus O. MyreenChalmers University of Technology, Sweden, Yong Kiam TanCarnegie Mellon University, USA
icfp-2017-papers11:37 - 12:00
Geoffrey MainlandDrexel University, USA