make lrecord UID's have a separate UID space for each object, resurrect debug SOE code in extents.c -------------------- ChangeLog entries follow: -------------------- src/ChangeLog addition: 2010-03-15 Ben Wing <ben@xemacs.org> * alloc.c: * alloc.c (c_readonly): * alloc.c (deadbeef_memory): * alloc.c (make_compiled_function): * alloc.c (make_button_data): * alloc.c (make_motion_data): * alloc.c (make_process_data): * alloc.c (make_timeout_data): * alloc.c (make_magic_data): * alloc.c (make_magic_eval_data): * alloc.c (make_eval_data): * alloc.c (make_misc_user_data): * alloc.c (noseeum_make_marker): * alloc.c (ADDITIONAL_FREE_string): * alloc.c (common_init_alloc_early): * alloc.c (init_alloc_once_early): * bytecode.c (print_compiled_function): * bytecode.c (mark_compiled_function): * casetab.c: * casetab.c (print_case_table): * console.c: * console.c (print_console): * database.c (print_database): * database.c (finalize_database): * device-msw.c (sync_printer_with_devmode): * device-msw.c (print_devmode): * device-msw.c (finalize_devmode): * device.c: * device.c (print_device): * elhash.c: * elhash.c (print_hash_table): * eval.c (print_multiple_value): * eval.c (mark_multiple_value): * events.c (deinitialize_event): * events.c (print_event): * events.c (event_equal): * extents.c: * extents.c (soe_dump): * extents.c (soe_insert): * extents.c (soe_delete): * extents.c (soe_move): * extents.c (extent_fragment_update): * extents.c (print_extent_1): * extents.c (print_extent): * extents.c (vars_of_extents): * frame.c: * frame.c (print_frame): * free-hook.c: * free-hook.c (check_free): * glyphs.c: * glyphs.c (print_image_instance): * glyphs.c (print_glyph): * gui.c: * gui.c (copy_gui_item): * hash.c: * hash.c (NULL_ENTRY): * hash.c (KEYS_DIFFER_P): * keymap.c (print_keymap): * keymap.c (MARKED_SLOT): * lisp.h: * lrecord.h: * lrecord.h (LISP_OBJECT_UID): * lrecord.h (set_lheader_implementation): * lrecord.h (struct old_lcrecord_header): * lstream.c (print_lstream): * lstream.c (finalize_lstream): * marker.c (print_marker): * marker.c (marker_equal): * mc-alloc.c (visit_all_used_page_headers): * mule-charset.c: * mule-charset.c (print_charset): * objects.c (print_color_instance): * objects.c (print_font_instance): * objects.c (finalize_font_instance): * opaque.c (print_opaque): * opaque.c (print_opaque_ptr): * opaque.c (equal_opaque_ptr): * print.c (internal_object_printer): * print.c (enum printing_badness): * rangetab.c (print_range_table): * rangetab.c (range_table_equal): * specifier.c (print_specifier): * specifier.c (finalize_specifier): * symbols.c: * symbols.c (print_symbol_value_magic): * tooltalk.c: * tooltalk.c (print_tooltalk_message): * tooltalk.c (print_tooltalk_pattern): * window.c (print_window): * window.c (debug_print_window): (1) Make lrecord UID's have a separate UID space for each object. Otherwise, with 20-bit UID's, we rapidly wrap around, especially when common objects like conses and strings increment the UID value for every object created. (Originally I tried making two UID spaces, one for objects that always print readably and hence don't display the UID, and one for other objects. But certain objects like markers for which a UID is displayed are still generated rapidly enough that UID overflow is a serious issue.) This also has the advantage of making UID values smaller, hence easier to remember -- their main purpose is to make it easier to keep track of different objects of the same type when debugging code. Make sure we dump lrecord UID's so that we don't have problems with pdumped and non-dumped objects having the same UID. (2) Display UID's consistently whenever an object (a) doesn't consistently print readably (objects like cons and string, which always print readably, can't display a UID), and (b) doesn't otherwise have a unique property that makes objects of a particular type distinguishable. (E.g. buffers didn't and still don't print an ID, but the buffer name uniquely identifies the buffer.) Some types, such as event, extent, compiled-function, didn't always (or didn't ever) display an ID; others (such as marker, extent, lstream, opaque, opaque-ptr, any object using internal_object_printer()) used to display the actual machine pointer instead. (3) Rename NORMAL_LISP_OBJECT_UID to LISP_OBJECT_UID; make it work over all Lisp objects and take a Lisp object, not a struct pointer. (4) Some misc cleanups in alloc.c, elhash.c. (5) Change code in events.c that "deinitializes" an event so that it doesn't increment the event UID counter in the process. Also use deadbeef_memory() to overwrite memory instead of doing the same with custom code. In the process, make deadbeef_memory() in alloc.c always available, and delete extraneous copy in mc-alloc.c. Also capitalize all uses of 0xDEADBEEF. Similarly in elhash.c call deadbeef_memory(). (6) Resurrect "debug SOE" code in extents.c. Make it conditional on DEBUG_XEMACS and on a `debug-soe' variable, rather than on SOE_DEBUG. Make it output to stderr, not stdout. (7) Delete some custom print methods that were identical to external_object_printer().

/* Definitions of marked slots in coding systems
   Copyright (C) 1991, 1995 Free Software Foundation, Inc.
   Copyright (C) 1995 Sun Microsystems, Inc.
   Copyright (C) 2000, 2001, 2002 Ben Wing.

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: ????.  Split out of file-coding.h. */

/* We define the Lisp_Objects in the coding system structure in a separate
   file because there are numerous places we want to iterate over them,
   such as when defining them in the structure, initializing them, or
   marking them.

   To use, define MARKED_SLOT before including this file.  In the structure
   definition, you also need to define CODING_SYSTEM_SLOT_DECLARATION.  No
   need to undefine either value; that happens automatically.  */

#ifndef MARKED_SLOT_ARRAY
#ifdef CODING_SYSTEM_SLOT_DECLARATION
#define MARKED_SLOT_ARRAY(slot, size) MARKED_SLOT(slot[size])
#else
#define MARKED_SLOT_ARRAY(slot, size) do {		\
    int mslotidx;					\
    for (mslotidx = 0; mslotidx < size; mslotidx++)	\
      {							\
	MARKED_SLOT (slot[mslotidx])			\
      }							\
  } while (0);
#endif
#endif /* not MARKED_SLOT_ARRAY */

  /* Name and description of this coding system.  The description
     should be suitable for a menu entry. */
  MARKED_SLOT (name)
  MARKED_SLOT (description)

  /* Mnemonic string displayed in the modeline when this coding
     system is active for a particular buffer. */
  MARKED_SLOT (mnemonic)

  /* Long documentation on the coding system. */
  MARKED_SLOT (documentation)
  /* Functions to handle additional conversion after reading or before
     writing. #### This mechanism should be replaced by the ability to
     simply create new coding system types. */
  MARKED_SLOT (post_read_conversion)
  MARKED_SLOT (pre_write_conversion)

  /* If this coding system is not of the correct type for text file
     conversion (i.e. decodes byte->char), we wrap it with appropriate
     char<->byte converters.  This is created dynamically, when it's
     needed, and cached here. */
  MARKED_SLOT (text_file_wrapper)

  /* ------------------------ junk to handle EOL -------------------------
     I had hoped that we could handle this without lots of special-case
     code, but it appears not to be the case if we want to maintain
     compatibility with the existing way.  However, at least with the way
     we do things now, we avoid EOL junk in most of the coding system
     methods themselves, or in the decode/encode functions.  The EOL
     special-case code is limited to coding-system creation and to the
     convert-eol and undecided coding system types. */

  /* If this coding system wants autodetection of the EOL type, then at the
     appropriate time we wrap this coding system with
     convert-eol-autodetect. (We do NOT do this at creation time because
     then we end up with multiple convert-eols wrapped into the final
     result -- esp. with autodetection using `undecided' -- leading to a
     big mess.) We cache the wrapped coding system here. */
  MARKED_SLOT (auto_eol_wrapper)
  
  /* Subsidiary coding systems that specify a particular type of EOL
     marking, rather than autodetecting it.  These will only be non-nil
     if (eol_type == EOL_AUTODETECT).  These are chains. */
  MARKED_SLOT_ARRAY (eol, 3)
  /* If this coding system is a subsidiary, this element points back to its
     parent. */
  MARKED_SLOT (subsidiary_parent)

  /* At decoding or encoding time, we use the following coding system, if
     it exists, in place of the coding system object.  This is how we
     handle coding systems with EOL types of CRLF or CR.  Formerly, we did
     the canonicalization at creation time, returning a chain in place of
     the original coding system; but that interferes with
     `coding-system-property' and causes other complications.  CANONICAL is
     used when determining the end types of a coding system.
     canonicalize-after-coding also consults CANONICAL (it has to, because
     the data in the lstream is based on CANONICAL, not on the original
     coding system). */
  MARKED_SLOT (canonical)

  MARKED_SLOT (safe_charsets)

  MARKED_SLOT (safe_chars)

#undef MARKED_SLOT
#undef MARKED_SLOT_ARRAY
#undef CODING_SYSTEM_SLOT_DECLARATION