Kurt, Thank you! This is incredibly helpful. Also, I think I win the dummy prize because a light just turned on in my head that I should be using the jdk8u/jdk8u branch, not the jdk8/jdk8 one.
Duh. Thanks, Bryan On Mon, Apr 27, 2015 at 5:52 PM, Kurt Miller <k...@intricatesoftware.com> wrote: > On Mon, 2015-04-27 at 15:10 -0400, Bryan C. Everly wrote: > > Makes sense to me. I totally understand what you are saying about > > compiling vs. actually making it work. I'm just trying to get a feel > > for how big the "bread box" is (i.e. how much work am I signing up > > for). Once I understand the specific hacks I had to do in order to > > get it compiling, I'll be going back and making them correctly. I > > appreciate what you are saying (I maintained a proprietary, multi > > platform GUI programming language written entirely in C++ at a > > previous job and can't tell you how difficult it is to trace a bug > > that shows up in the end-user code back to the interpreter). > > One way to get an idea about the OpenBSD specific parts would be to > compare jdk7u/jdk7u to bsd-port/bsd-port as follows: > > hg clone http://hg.openjdk.java.net/jdk7u/jdk7u > cd jdk7u > sh get_source.sh > cd .. > hg clone http://hg.openjdk.java.net/bsd-port/bsd-port > cd bsd-port > sh get_source.sh > diff -uNpr -x build -x .hg\* -x \*.orig -x .hg -x .jcheck ../jdk7u . > > ../jdk7u-vs-bsd-port.diff > > This is shows the complete set of changes from Oracle's code base to our > code base for OpenJDK7. Greg and perhaps others have ported this over to > bsd-port/jdk8, so most of that work is done. Taking a quick peak at the > OpenBSD specific parts and I'm surprised how little is left. At one time > there was quite a bit of OpenBSD specific code needed. Hmm, actually I > just noticed some of our bsd-port changes make it into jdk7u already, so > this diff doesn't show all of the needed changes. I guess the next best > thing would be to do: > > cd bsd-port > grep OpenBSD -IR . > > This will get you pointed at the changes that were needed for OpenBSD in > OpenJDK 7. I think you will find that much of it was ported forward into > bsd-port/jdk8 when FreeBSD ported over to jdk8. > > Some of the most critical code to get right lives in: > > ./hotspot/src/os/bsd/vm/ > and > ./hotspot/src/os_cpu/bsd_x86/vm/ > > Problems in these areas generally leave you with a jdk that just doesn't > work. One good general test of the jdk is to build it, copy out the > resulting jdk image and use it to bootstrap the next build. > > > On the agreement front, I'll double-check with my company to be > > certain they won't object to me signing it (we push upstream patches > > to most of the Open Source projects we use so I don't think it will be > > a problem) and get it sent over. I created an account with the > > username 'bceverly' that I'll reference in the document when I send it > > in. > > Thanks. Let me know when you've sent it in so I can be on the lookout > for your name showing up on the OCA list. > > Regards, > -Kurt > > >
