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Implementing Jalapeno in Java (1999)
| Citations: | 109 - 4 self |
BibTeX
@INPROCEEDINGS{Alpern99implementingjalapeno,
author = {Bowen Alpern and C. R. Attanasio and Anthony Cocchi and Susan Flynn Hummel and Derek Lieber and Mark Mergen and Janice C. Shepherd and Stephen Smith},
title = {Implementing Jalapeno in Java},
booktitle = {},
year = {1999},
pages = {314--324},
publisher = {ACM Press}
}
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Abstract
Jalape~no is a virtual machine for Java TM servers written in Java. A running Java program involves four layers of functionality: the user code, the virtual-machine, the operating system, and the hardware. By drawing the Java / non-Java boundary below the virtual machine rather than above it, Jalape~no reduces the boundary-crossing overhead and opens up more opportunities for optimization. To get Jalape~no started, a boot image of a working Jalape ~no virtual machine is concocted and written to a file. Later, this file can be loaded into memory and executed. Because the boot image consists entirely of Java objects, it can be concocted by a Java program that runs in any JVM. This program uses reflection to convert the boot image into Jalape~no's object format. A special Magic class allows unsafe casts and direct access to the hardware. Methods of this class are recognized by Jalape~no's three compilers, which ignore their bytecodes and emit special-purpose machine code. User code w...
