Monthly Archives: December 2022

SequenceInputStream boosted: Latest OpenJDK Contrib | Java Coding | Head Crashing Informatics 68

Posted on 31. December 2022 by Markus Karg

If you are using SequenceInputStream, you will notice that it pulls all data into the JVM’s memory, just to drain it to another I/O sink. This is inefficient and slow. With my latest contribution contained in #OpenJDK 20, this will … Continue reading →

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Small Change with BIG EFFECT | OpenJDK Contrib | Java Coding | Head Crashing Informatics 67

Posted on 17. December 2022 by Markus Karg

Contributions to #OpenJDK don’t have to be huge always. Sometimes it is the small things that have BIG EFFECT. For example if a class was intended to be non-synchronized (hence: fast), implicitly is synchronized by mistake (hence: slow), is finally … Continue reading →

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I boosted the PushbackInputStream | OpenJDK Contrib | Java Coding | Head Crashing Informatics 66

Posted on 3. December 2022 by Markus Karg

As #PushbackInputStream is quite similar to #BufferedInputStream, it was rather easy for me to apply the performance optimizations I already developed for BufferedInputStream to the PushbackInputStream. The contribution was accepted in November 2022, so it is now part of #OpenJDK … Continue reading →

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