Date: Fri, 19 May 1995 20:51:05 PDT From: Bill Janssen <email@example.com> Subject: New ILU 1.8 Common Lisp support available To: ilu-interest.PARC@xerox.com
Revised support for using ILU with Common Lisp is now available as
1) The Common Lisp support no longer has to load C code for each ILU module loaded, so CL implementations without that capability may use ILU. This also speeds up loading of ILU modules considerably.
2) CORBA-style union support is now there.
3) ILU dynamic object creation is now fully supported. That is, an ILU kernel server may now be created which calls back to Lisp functions to create objects on demand, rather than having to have them available before clients make calls on them.
4) A non-threaded Franz ACL implementation of the ILU support is now included, solely as an example of how to support ILU in Common Lisp implementations without threads. Of course, if your CL has threads, your ILU support should use them.
5) A new version of the ILU manual is included, with the appropriate changes to the CL chapter.
6) A modified version of examples/test1/ is provided, with Lisp examples of the test1 program.
``But what's ILU, anyway?''
The Inter-Language Unification system (ILU) is a multi-language object interface system. The object interfaces provided by ILU hide implementation distinctions between different languages, between different address spaces, and between operating system types. ILU can be used to build multi-lingual object-oriented libraries ("class libraries") with well-specified language-independent interfaces. It can also be used to implement distributed systems. It can also be used to define and document interfaces between the modules of non-distributed programs. ILU interfaces are specified in ILU's Interface Specification Language.
The 1.8 release of ILU contains support for the programming languages Common Lisp, C++, ANSI C, Modula-3, and Python). It has been installed on many flavors of UNIX, including SPARC machines running SunOS 4.1.3 and Solaris 2, SGI MIPS machines running IRIX 5.2, Intel 486 machines running Linux 1.1.78, DEC Alpha machines with OSF/1, IBM RS/6000 machines running AIX, and HP machines running HP/UX. A port of ILU to the Microsoft Windows 3.1 and Windows NT environments has been finished, and will form part of the 1.9 release. ILU supports both threaded and non-threaded operation.
One of the implementation goals of ILU is to maximize compatibility with existing open standards. As a result, ILU provides support for use of the OMG CORBA IDL interface description language, and can be thought of as a CORBA ORB system (though with omissions from and extensions to the CORBA spec). As another result, ILU includes a self-contained implementation of ONC RPC, and it is possible to describe and use existing RPC services as ILU objects. ILU is available free from `ftp://ftp.parc.xerox.com/pub/ilu/ilu.html'. -- Bill Janssen <firstname.lastname@example.org> (415) 812-4763 FAX: (415) 812-4777 Xerox Palo Alto Research Center, 3333 Coyote Hill Rd, Palo Alto, CA 94304 URL: ftp://ftp.parc.xerox.com/pub/ilu/misc/janssen.html
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