Book Image

Supercharge Your Applications with GraalVM

By : A B Vijay Kumar
Book Image

Supercharge Your Applications with GraalVM

By: A B Vijay Kumar

Overview of this book

GraalVM is a universal virtual machine that allows programmers to compile and run applications written in both JVM and non-JVM languages. It improves the performance and efficiency of applications, making it an ideal companion for cloud-native or microservices-based applications. This book is a hands-on guide, with step-by-step instructions on how to work with GraalVM. Starting with a quick introduction to the GraalVM architecture and how things work under the hood, you'll discover the performance benefits of running your Java applications on GraalVM. You'll then learn how to create native images and understand how AOT (ahead-of-time) can improve application performance significantly. The book covers examples of building polyglot applications that will help you explore the interoperability between languages running on the same VM. You'll also see how you can use the Truffle framework to implement any language of your choice to run optimally on GraalVM. By the end of this book, you'll not only have learned how GraalVM is beneficial in cloud-native and microservices development but also how to leverage its capabilities to create high-performing polyglot applications.
Table of Contents (17 chapters)
1
Section 1: The Evolution of JVM
4
Section 2: Getting Up and Running with GraalVM – Architecture and Implementation
8
Section 3: Polyglot with Graal
13
Section 4: Microservices with Graal

Chapter 8 – GraalVM Polyglot – Java on Truffle, Python, and R

  1. Java on Truffle is the new way to run Java programs on top of the Truffle framework. Java on Truffle provides an interpreter that is completely built on Java and runs in the same memory space as other Truffle languages. This was introduced in GraalVM version 21. For more details refer to the Understanding Espresso (Java on Truffle) section.
  2. Java on Truffle provides an isolationist layer, which helps to run untrusted code and code written in an older version of JDK, and provides hot-swap and other advanced features. To learn more about the advantages of using Java on Truffle, refer to the Why do we need Java on Java? section for more details.
  3. The Polyglot.cast() method is used in Java on Truffle to typecast the data that is exported or returned by dynamic languages. Refer to the Exploring Espresso interoperability with other Truffle languages section for more details and code examples.
  4. SST stands...