9/11/2006: SISC 1.16.4 Released
New in this Release
-------------------
SISC 1.16.4 debuts the new, simplified I/O layer, which allows
for the custom definition of Scheme ports in a simpler, more
efficient manner. In addition, the layer brings Java and
Scheme I/O more closely together in the implementation,
providing massive performance increases. I/O is now
between 10 and 30 times faster depending on the frequency
and size of reads or writes.
Furthermore, providing Scheme ports to Java libraries and
Java I/O objects as Scheme ports is both easier and more
efficient.
* New I/O implementation layer, with an unchanged Scheme API.
* New custom I/O port API.
* max-stack-trace-depth, which controls the accuracy
of the tail-recursion correct stack tracer, is now
a dynamic parameter.
* Buffered ports now available explicitly via a layered
port constructor rather than implicitly via autoflush.
* Improved error reporting in the Java->Scheme interface.
* Several bug fixes.
About SISC
----------
SISC is an extensible heap-based interpreter of Scheme running on
the Java VM, with an aggressively optimized, lightweight (<200k)
Scheme engine. SISC outperforms all existing Java
interpreters (often by more than an order of magnitude), and is
competitive with interpreters in any language.
In addition, SISC is a complete implementation of the language.
The entire R5RS Scheme standard is supported, without exception.
This includes a full number tower including complex number support,
arbitrary precision integers and floating point numbers, as well as
hygienic R5RS macros, proper tail recursion, and first-class
serializable continuations (not just the escaping continuations as
in many limited Scheme systems). SISC also attempts to implement the
standard as correctly as possible, while still providing
exceptional performance.
Finally, SISC provides many useful real-world extensions, such as
networking, threading, elegant exception handling, generic
procedures, an object system, SLIB and comprehensive SRFI support, a
scope-friendly module system, a Scheme and Java object system
with a clean foreign-function interface and more.
Downloads and More Information
------------------------------
Source code, binaries, and SISC documentation can be found on
the web at:
http://sisc.sourceforge.net
Special Thanks
--------------
Thanks go out to the following people who contributed to
this release:
Alessandro Colomba
Tony Garnock-Jones
Norman Gray
Dan Muresan
Ben Simon
Licensing
---------
SISC is Free Software. It is released simultaneously under the GNU
General Public License (for free-software projects), and the Mozilla
Public License (for commercial entities). The documentation is
available under the GPL.
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