Jigsaw Hackday in London - Anything in particular you want us to look at?

mark.reinhold at oracle.com mark.reinhold at oracle.com
Tue Jun 23 16:12:19 UTC 2015

2015/6/23 8:45 -0700, vitalyd at gmail.com:
> Yes, but until all the "safe" replacements are in place and vetted (e.g.
> performance is on par with Unsafe, same functionality is available, etc), I
> don't see the point of making it even more annoying to grab hold of.  The
> people who are using it will continue using it until the replacements are
> available, and this is just going to annoy them.

That's precisely the point.

sun.misc.Unsafe and its ilk will go away one day.  In preparation for
that, making it a bit harder to use will motivate its current users to
consider whether they really do need to use it -- some do, but some

If you absolutely do need it then now is the time to start looking at
the alternatives in development, and contribute to those efforts in
order to make sure that your needs are met.  Paul's work on variable
handles (JEP 193 [1]), e.g., is far enough along that feedback would
be useful.

Making sun.misc.Unsafe harder to use will also help the many users who
unknowingly depend upon this unsupported API, via libraries which do
depend upon it, to become aware of that dependence.  They can then
either seek alternatives or ask the maintainers of those libraries to
do so.

- Mark

[1] http://openjdk.java.net/jeps/193

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