Mercurial > hg > xemacs-beta
view src/vdb.h @ 4502:8748a3f7ceb4
Handle varalias chains, custom variables in #'user-variable-p.
src/ChangeLog addition:
2008-08-23 Aidan Kehoe <kehoea@parhasard.net>
* eval.c (Fuser_variable_p): Moved to symbols.c
* symbols.c (Fcustom_variable_p): Moved here from custom.el.
(user_variable_alias_check_fun): Mapper function used in
`user-variable-p'.
(Fuser_variable_p): Moved here from eval.c, to allow it to examine
the variable alias chain. Expanded to check each entry in the
variable alias chain for signs of being a user variable;
documentation updated, noting the differences between GNU's
behaviour and ours (ours is a little more sensible)
(map_varalias_chain): New.
Given a C function, call it at least once for each symbol in a
symbol's varalias chain, signalling an error if there's a cycle,
and returning immediately if the function returns something other
than Qzero.
(Fdefvaralias): Correct the use of the word "alias" in the
docstring and in the argument name. Motivate this in a
comment. Add support for a DOCSTRING argument, something GNU has
too, and document this
* gc.c (vars_of_gc): Start the docstring of
`garbage-collection-messages' with an asterisk, to indicate that
it's a user variable.
lisp/ChangeLog addition:
2008-08-23 Aidan Kehoe <kehoea@parhasard.net>
* custom.el: Move #'custom-variable-p to C, since it's now called
from #'user-variable-p.
| author | Aidan Kehoe <kehoea@parhasard.net> |
|---|---|
| date | Sat, 23 Aug 2008 16:38:51 +0200 |
| parents | 141c2920ea48 |
| children | 308d34e9f07d |
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/* Virtual diry bit implementation for XEmacs. Copyright (C) 2005 Marcus Crestani. This file is part of XEmacs. XEmacs is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. XEmacs is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with XEmacs; see the file COPYING. If not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ /* Synched up with: Not in FSF. */ #include "lisp.h" #ifndef INCLUDED_vdb_h_ #define INCLUDED_vdb_h_ /*--- prototypes -------------------------------------------------------*/ BEGIN_C_DECLS /* Platform dependent signal handling: */ /* Install the platform-dependent signal handler. */ void vdb_install_signal_handler (void); /* Platform dependent memory protection. */ void vdb_protect (void *ptr, EMACS_INT len); void vdb_unprotect (void *ptr, EMACS_INT len); /* Common (platform independent) virtual diry bit stuff: */ /* Start the write barrier. This function is called when a garbage collection is suspendend and the client is resumed. */ void vdb_start_dirty_bits_recording (void); /* Stop the write barrier. This function is called when the client is suspendend and garbage collection is resumed. */ void vdb_stop_dirty_bits_recording (void); /* Record page faults: Add the object pointed to by addr to the write barrer's internal data structure that stores modified objects. This function is called by the write barrier's fault handler. */ void vdb_designate_modified (void *addr); /* Propagate page faults to garbage collector: Read out the write barrier's internal data structure that stores modified objects and pass the information to the garbage collector. This function is called by vdb_stop_dirty_bits_recording(). Return how many objects have to be re-examined by the garbage collector. */ int vdb_read_dirty_bits (void); /* Provides Lisp functions for testing vdb implementation. */ void syms_of_vdb (void); END_C_DECLS #endif /* INCLUDED_vdb_h_ */