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Getting to Know Graal, the New Java JIT Compiler
Oracle have released Graal, a new JIT compiler for Java. For Java developers, Graal can be thought of as several separate but connected projects - it is a new JIT compiler for HotSpot, and also a new polyglot virtual machine, GraalVM. The initial release includes support for JVM bytecode and JavaScript with LLVM, Ruby and R in beta.
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Secrets of the Bytecode Ninjas
The Java language is defined by the Java Language Specification. But the executable bytecode of the Java Virtual Machine is defined by a completely separate standard, the Java Virtual Specification, and the two are often at odds. In this article we take a look at the structure of a class file and how to create class files directly without starting from Java source, using the ASM library.
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Is Your Java Application Hostile to JIT Compilation?
One of the most important parts of the JVM is the Just-In-Time (JIT) compiler. However, many applications are not written to take full advantage of the high-performance capabilities of the JIT. In this article we investigate some simple tricks to identify issues that may be making your application unfriendly to JIT.