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From "Pauls, Karl" <kpa...@trigeo.com>
Subject RE: Feed back appreciated - Quick preview of buffer rewrite
Date Wed, 21 May 2008 21:10:38 GMT

> -----Original Message-----
> From: Daniel Wirtz [mailto:daniel@virtunity.com]
> Yes they have, but only if there is a way to pass some memory contents
> from
> one to another application (or the OS). To take advantage of this, we may
> need to hack the JVM and maybe the OS's network implementation I think.

If I understand you correctly, then apart from the kernel-level implications of zero-copy
reads, such a facility to bring bytes into the JVM without a copy has existed in the JNI spec
since Java 1.4.

Note that this is an optional part of the JNI specification. So some vendors may not support

Isn't this how org.apache.tomcat.jni.Pool is implemented?


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