hg: macosx-port/macosx-port/jdk: added jobjc to build

[Mike Swingler]

Thanks for the heads up. I've also fixed some other minor omissions.

~Mike

On Mar 22, 2011, at 5:43 PM, Kelly O'Hair wrote:

> http://hg.openjdk.java.net/macosx-port/macosx-port/jdk/diff/391ef7b33b9f/make/java/jobjc/Makefile
> 
> Has a proprietary legal notice in it. I did not scan the rest of the sources.
> 
> -kto
> 
> On Mar 22, 2011, at 2:25 PM, Mike Swingler wrote:
> 
>> On Mar 22, 2011, at 1:50 PM, rhoover at apple.com wrote:
>> 
>>> Changeset: 391ef7b33b9f
>>> Author:    rhoover
>>> Date:      2011-03-22 14:49 -0600
>>> URL:       http://hg.openjdk.java.net/macosx-port/macosx-port/jdk/rev/391ef7b33b9f
>>> 
>>> added jobjc to build
>> 
>> Hi all,
>> 
>> I would just like to follow up on Roger's push, and let you know what JObjC is (and what it is not).
>> 
>> We have created a generator that creates compile-time Java wrappers for Objective-C data types. We take the native C and ObjC framework BridgeSupport meta data files, and use those to produce Java classes which represent the frameworks, classes, and instance types of the native API.
>> 
>> This is not a replacement for CocoaJava for ordinary app developers. It is designed to implement the Java runtime itself on Mac OS X, without writing excessive amounts of Objective-C through JNI. It allows us to avoid micromanaging the native object lifetime between 32/64-bit, retain/release vs. ObjC garbage collected modes, as well as automatically handling the ObjC exception model interactions Java's.
>> 
>> These wrapper classes should also not be used for performance sensitive code, since they still have the same overhead cost as an ordinary JNI call, ObjC @try/@catch blocks, as well as an invocation through libffi trampolines. We intend to use the generated JObjC classes to quickly bring up new functionality, which will be replaced with hand-written JNI in the performance critical sections.
>> 
>> If you have any questions about the generator, the classes it produces, or anything else, please let us know.
>> 
>> Regards,
>> Mike Swingler
>> Java Engineering
>> Apple Inc.
>> 
>