OpenJIT: An Open-Ended, Reflective JIT Compiler Framework for Java

Abstract. OpenJIT is an open-ended, reflective JIT compiler framework for Java being researched and developed in a joint project by Tokyo Inst. Tech. and Fujitsu Ltd. Although in general self-descriptive systems have been studied in various contexts such as reflection and interpreter/compiler bootstrapping, OpenJIT is a first system we know to date that offers a stable, full-fledged Java JIT compiler that plugs into existing monolithic JVMs, and offer competitive performance to JITs typically written in C or C++. This is in contrast to previous work where compilation did not occur in the execution phase, customized VMs being developed ground-up, performance not competing with existing optimizing JIT compilers, and/or only a subset of the Java language being supported. The main contributions of this paper are, 1) we propose an architecture for a reflective JIT compiler on a monolithic VM, and identify the technical challenges as well as the techniques employed, 2) We define an API that ...

• Type: Conference
• Year: 2000
• Where: ECOOP
• Authors: Hirotaka Ogawa, Kouya Shimura, Satoshi Matsuoka, Fuyuhiko Maruyama, Yukihiko Sohda, Yasunori Kimura
• Keywords: Compiler Framework, ECOOP 2000, JIT Compiler, Programming Languages, Reflective Jit Compiler