Hi. I propose the following talk for the Free Java Developer Room at FOSDEM 2019. Title: Project Loom: Weaving executions Abstract: OpenJDK’s Project Loom's mission is to make it easier to write, debug, profile and maintain concurrent applications under heavy load. Threads are a natural and convenient concurrency construct which is being supplanted by less convenient, asynchronous abstractions because threads' implementation in the OS kernel is insufficient for meeting performance demands, and are wasteful in computing resources. Project Loom will introduce fibers as lightweight, efficient threads, managed by the Java runtime, that let developers use the same simple abstraction but with significantly better performance and lower footprint. Fibers are implemented in the JDK libraries on top of multi-prompt, stackful delimited continuations in the JVM. This session will present the current status and challenges of the project -- both of implementation and design -- one year into the project. Bio: Ron Pressler is the tech lead for OpenJDK's Project Loom. Before coming to Oracle, he led the development of Quasar, an open-source Java fibers library. Microblog: https://twitter.com/pressron Blog: https://pron.github.io/ Recording: Fine Ron