Hi Mark, Thanks. This looks like a solid plan. It will put us on track to get rid of the internal API usage without making it needlessly dificult for people to adopt JDK 9.
Regards, Jeroen > -----Original Message----- > From: jigsaw-dev [mailto:jigsaw-dev-boun...@openjdk.java.net] On Behalf > Of mark.reinh...@oracle.com > Sent: Tuesday, August 4, 2015 16:49 > To: jigsaw-dev@openjdk.java.net > Subject: Encapsulating internal APIs in JDK 9 (sun.misc.Unsafe, etc.) > > As part of the overall modularization effort [1] we're going to > encapsulate most of the JDK's internal APIs within the modules that > define and use them so that, by default, they are not accessible to code > outside the JDK. > > This change will improve the integrity of the platform, since many of > these internal APIs define privileged, security-sensitive operations. > In the long run it will also reduce the costs borne by the maintainers > of the JDK itself and by the maintainers of libraries and applications > that, knowingly or not, make use of these non-standard, unstable, and > unsupported internal APIs. > > It's well-known that some popular libraries make use of a few of these > internal APIs, such as sun.misc.Unsafe, to invoke methods that would be > difficult, if not impossible, to implement outside of the JDK. To > ensure the broad testing and adoption of the release we propose to treat > these critical APIs as follows: > > - If it has a supported replacement in JDK 8 then we will encapsulate > it in JDK 9; > > - If it does not have a supported replacement in JDK 8 then we will > not > encapsulate it in JDK 9, so that it remains accessible to outside > code; and, further, > > - If it has a supported replacement in JDK 9 then we will deprecate it > in JDK 9 and encapsulate it, or possibly even remove it, in JDK 10. > > The critical internal APIs proposed to remain accessible in JDK 9 are > listed in JEP 260 [2]. Suggested additions to the list, justified by > real-world use cases and estimates of developer and end-user impact, are > welcome. > > - Mark > > > [1] http://openjdk.java.net/jeps/200 > [2] http://openjdk.java.net/jeps/260
