ahh they also walk the complete tree as we do with object ser.
and then call use instrumentation.

johan


On 2/13/07, Eelco Hillenius <[EMAIL PROTECTED]> wrote:

> I think now that we're dependent on JDK 1.5+, there is a JMX-related
sizeof
> method we can use to find out the exact size of a given object in
memory.
> We might want to switch to that.

For 1.3 we're still on JDK 1.4 I'm afraid. But we could hide the
sizeOf behind a strategy and deliver a single jar (as it needs a
manifest describing the instrumented class) with the instrumentation
based implementation.

More:
http://www.jroller.org/page/maxim?entry=again_about_determining_size_of

Eelco

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