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Daniel Kochmański 97f174c0a5 clos: specializer class: avoid a metastability issue 
1. We've implemented SPECIALIZER-DIRECT-METHODS and
SPECIALIZER-DIRECT-GENERIC-FUNCTIONS as accessors to slots in the
specializer DIRECT-METHODS and DIRECT-GENERIC-FUNCTIONS.

2. As specified in MOP these collections are maintained by
ADD-DIRECT-METHOD and REMOVE-DIRECT-METHOD functions.

3. When we finalize standard-method, we remove old methods and among
them is a method for a function METHOD-GENERIC-FUNCTION, and that
function must be called from REMOVE-DIRECT-METHOD when we want to
update SPECIALIZER-DIRECT-GENERIC-FUNCTIONS, so we end up in a
debugger that there is no specialization for this function.

We adapt approach similar to one taken in SBCL (did they encounter a
similar issue?): specializer class has a SPECIALIZER-METHOD-HOLDER
accessor which stores a CONS cell. We add/remove methods to CAR and
take generic functions from CDR. The trick is that CDR is lazily
computed when SPECIALIZER-DIRECT-GENERIC-FUNCTIONS is called and
invalidated when we add and remove method.
2020-04-19 14:34:23 +02:00
contrib sockets: don't return the same address multiple times in get-host-by-name 2020-04-19 10:46:03 +02:00
examples examples: add cmake example 2018-08-17 10:45:02 +02:00
msvc fix array dimension limit for msvc win64 2020-03-07 22:26:43 +01:00
src clos: specializer class: avoid a metastability issue 2020-04-19 14:34:23 +02:00
.gitignore add msvc/package-locks.asd to .gitignore 2019-03-19 12:52:48 +08:00
.gitlab-ci.yml Add .gitlab-ci.yml 2017-01-11 18:30:33 +00:00
appveyor.yml Add simple appveyor msvc build 2017-05-13 00:12:13 +02:00
CHANGELOG ffi: Update libffi to version 3.3 2019-12-09 19:49:30 +01:00
configure Preserve quoting when passing the arguments to the build directory 2008-08-27 09:50:44 +02:00
COPYING cosmetic: rename LGPL->COPYING 2016-10-08 14:24:31 +02:00
INSTALL doc: more detailed build instructions for MSVC 2020-03-01 18:49:49 +01:00
LICENSE copyright: add Marius to the maintainer list. 2019-02-22 18:43:37 +00:00
Makefile.in doc: set new doc as standard documentation 2019-01-03 19:14:28 +01:00
README.md update readme (typos) 2015-08-31 08:22:52 +00:00

README.md

ECL stands for Embeddable Common-Lisp. The ECL project aims to produce an implementation of the Common-Lisp language which complies to the ANSI X3J13 definition of the language.

The term embeddable refers to the fact that ECL includes a Lisp to C compiler, which produces libraries (static or dynamic) that can be called from C programs. Furthermore, ECL can produce standalone executables from Lisp code and can itself be linked to your programs as a shared library. It also features an interpreter for situations when a C compiler isn't available.

ECL supports the operating systems Linux, FreeBSD, NetBSD, DragonFly BSD, OpenBSD, Solaris (at least v. 9), Microsoft Windows (MSVC, MinGW and Cygwin) and OSX, running on top of the Intel, Sparc, Alpha, ARM and PowerPC processors. Porting to other architectures should be rather easy.