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FOSDEM 2018 - Ada Developer Room - Sat 3 Feb 2018 - Brussels
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>----------------------------------------------------------------------- > > Ada-Belgium is pleased to announce the program for its > > 8th Ada Developer Room at FOSDEM 2018 > > on Saturday 3 February 2018 > > Université Libre de Bruxelles (ULB), Solbosch Campus, Room AW1.125 > Avenue Franklin D. Roosevelt Laan 50, B-1050 Brussels, Belgium > > Organized in cooperation with Ada-Europe > >
> >----------------------------------------------------------------------- > >FOSDEM, the Free and Open source Software Developers' European Meeting, >is a non-commercial two-day weekend event organized early each year in >Brussels, Belgium. It is highly developer-oriented and brings together >8000+ participants from all over the world. The goal is to provide >open source developers and communities a place to meet with other >developers and projects, to be informed about the latest developments >in the open source world, to attend interesting talks and presentations >on various topics by open source project leaders and committers, and >to promote the development and the benefits of open source solutions. >The 2018 edition takes place on Saturday 3 and Sunday 4 February. It >is free to attend and no registration is necessary. > >In this edition, Ada-Belgium organizes once more a series of >presentations related to the Ada Programming Language and Free or >Open Software in a s.c. Developer Room. The "Ada DevRoom" at FOSDEM >2018 is held on the first day of the event, Saturday 3 February 2018. > >--------------------------------------- >Ada Programming Language and Technology >--------------------------------------- > >Ada is a general-purpose programming language originally designed >for safety- and mission-critical software engineering. It is used >extensively in air traffic control, rail transportation, aerospace, >nuclear, financial services, medical devices, etc. It is also perfectly >suited for open source development. > >Awareness of safety and security issues in software systems is >increasing. Multi-core platforms are now abundant. These are some >of the reasons that the Ada programming language and technology >attracts more and more attention, among others due to Ada's support >for programming by contract and for multi-core targets. The Ada 2012 >language definition was approved and published by ISO in December 2012, >updated early 2016, and work on new features for the next revision >is ongoing. As with the prior Ada 1995 and Ada 2005 standards, >the first full implementation of the Ada 2012 standard was made >available in gcc - the GNU Compiler Collection (GNAT). More and more >tools are available, many are open source, including for small and >recent platforms. Interest keeps increasing, also in the open source >community, and many exciting projects started. > >The Ada DevRoom aims to present the facilities offered by the >Ada language (such as for object-oriented, multicore, or embedded >programming) as well as some of the many exciting tools and projects >using Ada. > >-------------------------------- >Ada Developer Room Presentations (room: AW1.125, 76 seats) >-------------------------------- > >The presentations in the Ada DevRoom start after the opening FOSDEM >keynote. The program runs from 10:30 to 19:00, and consists of 7.5 >hours with 9 talks by 9 presenters from 5 different countries, plus >2 half-hour sessions with informal discussions. > >10:30-11:00 - Arrival & Informal Discussions > > Feel free to arrive early, to start the day with some informal > discussions while the set-up of the DevRoom is finished. > >11:00-11:05 - Welcome > by Dirk Craeynest - Ada-Belgium > > Welcome to the Ada Developer Room at FOSDEM 2018, which is organized > by Ada-Belgium in cooperation with Ada-Europe. Ada-Belgium and > Ada-Europe are non-profit organizations set up to promote the > use of the Ada programming language and related technology, > and to disseminate knowledge and experience into academia, > research and industry in Belgium and Europe, resp. Ada-Europe has > member-organizations, such as Ada-Belgium, in various countries, > and direct members in many other countries. More information on this > DevRoom is available on the Ada-Belgium web-site (see URL above). > >11:05-11:50 - An Introduction to Ada for Beginning and Experienced Programmers > by Jean-Pierre Rosen - Adalog > > An overview of the main features of the Ada language, with special > emphasis on those features that make it especially attractive for > free software development. Ada is a feature-rich language, but what > really makes Ada stand-out is that the features are nicely integrated > towards serving the goals of software engineering. If you prefer > to spend your time on designing elegant solutions rather than on > low-level debugging, if you think that software should not fail, > if you like to build programs from readily available components > that you can trust, you should really consider Ada! > >12:00-12:50 - Making the Ada_Drivers_Library: Embedded Programming with Ada > by Fabien Chouteau - AdaCore > > The Ada programming language was designed for embedded programming > and it is well known in the aerospace domains and in general every > domain where failure is not an option. Unfortunately it is not > used a lot in the embedded FOSS community. In the past two years, > AdaCore worked to promote the use of Ada in the FOSS community, > in particular for embedded programming with the "Make with Ada" > blog post series, my interview for the Embedded.fm podcase, blog > posts on "ARM Community" or the "Make with Ada" competition. > > In this 45 minutes lecture I will: > + give a short introduction of Ada for embedded and how its features > (programing by contract, strong typing, representation clauses > (hardware mapping), OOP, static compiler checks and optional > run-time checks) can help improving the development time, > maintenance and quality of FOSS embedded projects; > + present the Ada_Drivers_Library project, where we put all those > features in practice to develop micro-controller device drivers > in Ada; > + make a quick getting started demo; > + present some of the best projects from the "Make with Ada" > competition. > >13:00-13:20 - Shared Memory Parallelism in Ada: Load Balancing by Work Stealing > by Jan Verschelde - University of Illinois at Chicago > > Tasking in Ada provides an effective tool for shared memory > parallelism. For coarse grained regular parallelism, load balancing > works with one single job queue. For finer grained and irregular > parallelism, work stealing balances the load with multiple job > queues. The programming concepts will be illustrated with examples > of algorithms in polyhedral geometry. The demonstrated code belongs > to the free and open source PHCpack. > >13:30-13:50 - Ada, or How to Enforce Safety Rules at Compile Time > by Jean-Pierre Rosen - Adalog > > This is a real life story of a mixed criticality system, where a > proper usage of Ada's features for controlling visibility allowed > a provable enforcement of the segregation rules at compile time: > any violation would simply not compile. > >14:00-14:50 - Contract-based Programming: a Route to Finding Bugs Earlier > by Jacob Sparre Andersen - JSA Research & Innovation > > Contract-based programming is a software development technique, > where you include assertions of program properties as a part of the > compiled source text. In the strict form, the assertions are checked > at compile-time, but in this presentation I will focus on the more > common, less strict, form, where at least some of the assertions > aren't checked until run-time. Ada gives us a lot of help, so we > can write the our assertions about the program properties once, and > then have the compiler insert actual run-time checks wherever there > is a possibility that the assertion is violated. > > This presentation will focus on how we can write these contracts in > Ada in a way that make them effective at ensuring that our source > text does what we intend it to and allow the compiler to generate > efficient checks of the assertions. The intended audience is anybody > with enough programming experience to know concepts like types, > encapsulation and packages. Having tried to write Ada before will > be a benefit, but it isn't a requirement. > >15:00-15:50 - SPARK Language: Historical Perspective & FOSS Development > by Yannick Moy - AdaCore > > SPARK started in 1987 as a restricted subset of Ada 83, defined by > its own grammar rules. The overhaul of the language and toolset > starting in 2010 increased greatly the language subset, dropping in > effect the need for separate grammar rules. Since then, SPARK has > progressively adopted most of the Ada features, to a point where the > last remaining non-SPARK significant Ada feature today is pointers. > We have started work on including safe pointers in SPARK, borrowing > the ideas of pointer ownership from Rust. So one can legitimately > wonder what difference remains between SPARK and Ada. > > In the first part of this talk, I will lay out the principles that > have guided us through the inclusion of language features in SPARK > since 2010. I will describe in particular the trade-offs that > we considered for support of important features like recursion, > types with non-static constraints, generics, object orientation, > concurrency. I will give a preview of the support envisioned > for pointers in SPARK. So that the distinction between Ada and > SPARK appears clearly: it's not about quantity, it's about safety > and security. > > In the second part of this talk, I will give a tour of FOSS projects > which are using SPARK today: Aida, Certyflie, Muen, PolyORB-HI, > Pulsar, StratoX, Tokeneer. For each one, I will describe at > which level of assurance SPARK is used, with how much efforts and > for which benefits. Then I will focus on the largest one, Muen, > an x86/64 separation kernel for high assurance. Finally, we will > look at the resources which are available to the community for FOSS > development in SPARK. > >16:00-16:50 - Writing REST APIs with OpenAPI and Swagger Ada > by Stephane Carrez - Bouygues Telecom > > The OpenAPI specification is an emerging specification to describe > RESTful web services. The Swagger suite is a collection of tools > to write such API descriptions and have the code generated in more > than 29 languages, including Ada. The presentation will describe > how to write a REST operation with OpenAPI, generate the Ada client > with Swagger Codegen and use the generated code to interact with > the server. We will also describe the generated Ada server code > and how to implement the server side and run a complete REST server. > >17:00-17:50 - Browser-as-GUI and Web Applications with Gnoga > by Jeffrey R. Carter - Atos Belgium > > Gnoga is an all-Ada library that uses the features of modern web > browsers as a portable GUI. The program may run on the same computer > as the browser, or on a server over the internet. Participants will > be introduced to using Gnoga to create such programs. > > A singleton version of the Random_Int demo program will be used to > demonstrate the use of Gnoga as the GUI for a program running on the > same computer as the browser. Random_Int is a very simple program > that generates (pseudo)random integers in a user-specified range. > The Chattanooga demo is a text-chat server program allowing people > to chat on line. It demonstrates the use of Gnoga to create web > applications. A secure version of Chattanooga can sometimes be > accessed at https://chat.gnoga.com/. (The certificate for this site > has expired, but can still be used to ensure encrypted communication > with the site.) > > After installing Gnoga, the demos are available in the demo > directory. More information about Gnoga may be found at gnoga.com, > especially the Tools page. > >18:00-18:20 - Easy Ada Tooling with Libadalang > by Raphaël Amiard and Pierre-Marie De Rodat - AdaCore > > A lot of developers consider that a language is only as good as the > tooling that accompanies it. Ada has been conceived as a language > pretty well amenable to tooling, yet the tooling offer besides > AdaCore's is not very extensive, at least when compared to other > languages like Java, despite the existence of the ASIS project > (Ada Semantic Interface Specification). > > One of Libadalang's aims is to help solve that by providing an > easy way to build new Ada-aware tools. Libadalang is a library > that allows the user to query information about Ada code, including: > + Syntactic information. Query the token stream, the syntax tree, > find syntax patterns, etc. > + Semantic information, such as which declaration an identifier > references, the type of expressions, all references to a > declaration, etc. > In addition, one of the aims is to allow the users to modify the > trees, and propagate the changes to the source. > > This talk will go over what Libadalang can already do today, how > it differs from ASIS, future plans for the library, and potential > exciting use cases. > >18:30-19:00 - Informal Discussions & Closing > > Informal discussion on ideas and proposals for future events. > >------------------------------- >More information on Ada DevRoom >------------------------------- > >Speakers bios, pointers to relevant information, links to the FOSDEM >site, etc., are available on the Ada-Belgium site at >
> >We invite you to attend some or all of the presentations: they will >be given in English. Everybody interested can attend FOSDEM 2018; >no registration is necessary. > >We hope to see many of you there! > >Dirk Craeynest, FOSDEM Ada DevRoom coordinator >Dirk.Craeynest@cs.kuleuven.be (for Ada-Belgium/Ada-Europe/SIGAda/WG9) > >(V20180110.4)
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