Run Java with Java

An airhacks.fm conversation with Christian Humer (@grashalm_)
about: bachelor thesis on a Java bytecode interpreter written in
Java, exploration of whether Java could be used as a systems
language, benefits of implementing an ecosystem in itself as
validation, C1X compiler based on C1 but reimplemented from
scratch, concept of sea of nodes for mixing control and data flow,
goal to rewrite the entire VM in Java, benefits of using one
compiler throughout the stack for compatibility and
maintainability, discussion of de-optimization process in JIT
compilation, explanation of guards and assumptions in optimized
code, three versions of Espresso (Java bytecode interpreter), first
version as proof of concept, second version using Truffle with
serialized ASTs, third version based on bytecodes with unrolling
bytecode loops, explanation of bytecode quickening technique,
sandboxing capabilities in GraalVM as replacement for deprecated
security manager, isolating untrusted code in separate heaps for
security, protection against speculative execution attacks, use
case for running AI-generated Java code safely in isolated
environments, GraalOS as a minimal operating system for running
Java isolates, TRegex as GraalVM's optimized regular expression
engine that compiles regex to machine code, bytecode interpreter
DSL for generating efficient bytecode interpreters for different
languages, memory improvements from using bytecode arrays instead
of AST objects, potential future integration of TRegex as a Java
API

Christian Humer on twitter: @grashalm_