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view src/xgccache.h @ 4847:05c519de7353
be more careful when printing to check for bad objects
-------------------- ChangeLog entries follow: --------------------
src/ChangeLog addition:
2010-01-13 Ben Wing <ben@xemacs.org>
* print.c:
* print.c (internal_object_printer):
* print.c (enum printing_badness):
* print.c (printing_major_badness):
* print.c (print_internal):
Clean up the part of the code that looks for things that might
lead to crashing in the print code:
-- Make the "badness" messages more consistent.
-- Move the checks for circularities after the checks for bad
memory, since the checks for circularities involve accessing
memory (which could be bad).
-- Add an extra check to see if the object's implementation structure
is bad memory.
-- Add extra check for object itself being a null pointer or
implementation pointer being null.
-- Add some extra comments to help in maintaining the code.
| author | Ben Wing <ben@xemacs.org> |
|---|---|
| date | Wed, 13 Jan 2010 06:02:42 -0600 |
| parents | ad2f4ae9895b |
| children | b3ce27ca7647 |
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/* Efficient caching of X GCs (graphics contexts). Copyright (C) 1993 Free Software Foundation, Inc. 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. */ /* Written by jwz, 14 jun 93 */ #ifndef INCLUDED_xgccache_h_ #define INCLUDED_xgccache_h_ struct gc_cache; struct gc_cache *make_gc_cache (Display *, Window); void free_gc_cache (struct gc_cache *cache); GC gc_cache_lookup (struct gc_cache *, XGCValues *, unsigned long mask); #define XE_GCONTEXT(cell) (XGContextFromGC(cell->gc)) #ifdef DEBUG_XEMACS void describe_gc_cache (struct gc_cache *cache, int flags); #define DGCCFLAG_DISABLE 0 #define DGCCFLAG_SUMMARY 1 << 0 #define DGCCFLAG_LIST_CELLS 1 << 1 #define DGCCFLAG_CELL_DETAILS 1 << 2 /* A combination of the flags above. */ #define DGCCFLAG_DEFAULT DGCCFLAG_SUMMARY | DGCCFLAG_LIST_CELLS #endif #endif /* INCLUDED_xgccache_h_ */