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JRuby: The Pain of Bringing an Off-Platform Dynamic Language to the JVM

Posted by Charles Nutter  on  Jan 07, 2009 3

In this presentation from the JVM Languages Summit 2008, Charles Nutter discusses bringing JRuby to the JVM, why Ruby is hard to implement, JIT compilation, precompilation, core Ruby implementation, Java library method access, method call semantics, scopes, open classes, heap-based frames, library challenges, strings, regexps, I/O, green threads, POSIX features, C lib support and future plans.

VM Optimizations for Language Designers

Posted by John Pampuch  on  Dec 31, 2008

In this presentation from the JVM Languages Summit 2008, John Pampuch discusses the HotSpot compiler, the history of Java performance, HotSpot development philosophies and challenges, optimization, inlining, virtual methods, loop unrolling, constant folding, escape analysis, synchronization improvements, JVM library improvements, processor-specific optimizations, and tips for better performance.

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