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Monday, 3 November 2014

The Mythical Modulo Mask

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It is an optimisation well known to those who know it well that % of power of 2 numbers can be replaced by a much cheaper AND operator to th...
7 comments:
Wednesday, 29 October 2014

The JVM Write Barrier - Card Marking

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In Java, not all value stores are created equal, in particular storing object references is different to storing primitive values. This make...
8 comments:
Tuesday, 28 October 2014

Celebrating 2 years of blogging!

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2 years ago I started on this blog with a short and relatively under-exciting post about intrinsics . I was not happy with that first post. ...
Wednesday, 27 August 2014

Disassembling a JMH Nano-Benchmark

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{UPDATE 03/09/14: If you come here looking for JMH related content start at the new and improved  JMH Resources Page  and branch out from ...
4 comments:
Tuesday, 12 August 2014

The volatile read suprise

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{UPDATE 03/09/14: If you come here looking for JMH related content start at the new and improved  JMH Resources Page  and branch out from th...
3 comments:
Friday, 8 August 2014

The many meanings of volatile read and write

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Just a quick note on the topic as I find I keep having this conversation. Volatile fields in Java provide three distinct features: Atomic...
2 comments:
Monday, 28 July 2014

Poll me, maybe?

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{This post is part of a long running series on lock free queues,  checkout the full index to get more context here } The java.util.Queue in...
5 comments: