cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup -------------------- ChangeLog entries follow: -------------------- src/ChangeLog addition: 2010-03-24 Ben Wing <ben@xemacs.org> * array.h: * array.h (XD_LISP_DYNARR_DESC): * dumper.c (pdump_register_sub): * dumper.c (pdump_store_new_pointer_offsets): * dumper.c (pdump_reloc_one_mc): * elhash.c: * gc.c (lispdesc_one_description_line_size): * gc.c (kkcc_marking): * lrecord.h: * lrecord.h (IF_NEW_GC): * lrecord.h (enum memory_description_type): * lrecord.h (enum data_description_entry_flags): * lrecord.h (struct opaque_convert_functions): Rename XD_LISP_OBJECT_BLOCK_PTR to XD_INLINE_LISP_OBJECT_BLOCK_PTR and document it in lrecord.h. * data.c: * data.c (finish_marking_weak_lists): * data.c (continue_marking_ephemerons): * data.c (finish_marking_ephemerons): * elhash.c (MARK_OBJ): * gc.c: * gc.c (lispdesc_indirect_count_1): * gc.c (struct): * gc.c (kkcc_bt_push): * gc.c (kkcc_gc_stack_push): * gc.c (kkcc_gc_stack_push_lisp_object): * gc.c (kkcc_gc_stack_repush_dirty_object): * gc.c (KKCC_DO_CHECK_FREE): * gc.c (mark_object_maybe_checking_free): * gc.c (mark_struct_contents): * gc.c (mark_lisp_object_block_contents): * gc.c (register_for_finalization): * gc.c (mark_object): * gc.h: * lisp.h: * profile.c: * profile.c (mark_profiling_info_maphash): Clean up KKCC code related to DEBUG_XEMACS. Rename kkcc_backtrace() to kkcc_backtrace_1() and add two params: a `size' arg to control how many stack elements to print and a `detailed' arg to control whether Lisp objects are printed using `debug_print()'. Create front-ends to kkcc_backtrace_1() -- kkcc_detailed_backtrace(), kkcc_short_backtrace(), kkcc_detailed_backtrace_full(), kkcc_short_backtrace_full(), as well as shortened versions kbt(), kbts(), kbtf(), kbtsf() -- to call it with various parameter values. Add an `is_lisp' field to the stack and backtrace structures and use it to keep track of whether an object pushed onto the stack is a Lisp object or a non-Lisp structure; in kkcc_backtrace_1(), don't try to print a non-Lisp structure as a Lisp object. * elhash.c: * extents.c: * file-coding.c: * lrecord.h: * lrecord.h (IF_NEW_GC): * marker.c: * marker.c (Fmarker_buffer): * mule-coding.c: * number.c: * rangetab.c: * specifier.c: New macros IF_OLD_GC(), IF_NEW_GC() to simplify declaration of Lisp objects when a finalizer may exist in one but not the other. Use them appropriately. * extents.c (finalize_extent_info): Don't zero out data->soe and data->extents before trying to free, else we get memory leaks. * lrecord.h (enum lrecord_type): Make the first lrecord type have value 1 not 0 so that 0 remains without implementation and attempts to interpret zeroed memory as a Lisp object will be more obvious. * array.c (Dynarr_free): * device-msw.c (msprinter_delete_device): * device-tty.c (free_tty_device_struct): * device-tty.c (tty_delete_device): * dialog-msw.c (handle_directory_dialog_box): * dialog-x.c: * emacs.c (free_argc_argv): * emodules.c (attempt_module_delete): * file-coding.c (chain_finalize_coding_stream_1): * file-coding.c (chain_finalize_coding_stream): * glyphs-eimage.c: * glyphs-eimage.c (jpeg_instantiate_unwind): * glyphs-eimage.c (gif_instantiate_unwind): * glyphs-eimage.c (png_instantiate_unwind): * glyphs-eimage.c (tiff_instantiate_unwind): * imgproc.c: * imgproc.c (build_EImage_quantable): * insdel.c (uninit_buffer_text): * mule-coding.c (iso2022_finalize_detection_state): * objects-tty.c (tty_finalize_color_instance): * objects-tty.c (tty_finalize_font_instance): * objects-tty.c (tty_font_list): * process.c: * process.c (finalize_process): * redisplay.c (add_propagation_runes): * scrollbar-gtk.c: * scrollbar-gtk.c (gtk_free_scrollbar_instance): * scrollbar-gtk.c (gtk_release_scrollbar_instance): * scrollbar-msw.c: * scrollbar-msw.c (mswindows_free_scrollbar_instance): * scrollbar-msw.c (unshow_that_mofo): * scrollbar-x.c (x_free_scrollbar_instance): * scrollbar-x.c (x_release_scrollbar_instance): * select-x.c: * select-x.c (x_handle_selection_request): * syntax.c: * syntax.c (uninit_buffer_syntax_cache): * text.h (eifree): If possible, whenever we call xfree() on a field in a structure, set the field to 0 afterwards. A lot of code is written so that it checks the value being freed to see if it is non-zero before freeing it -- doing this and setting the value to 0 afterwards ensures (a) we won't try to free twice if the cleanup code is called twice; (b) if the object itself stays around, KKCC won't crash when attempting to mark the freed field. * rangetab.c: Add a finalization method when not NEW_GC to avoid memory leaks. (#### We still get memory leaks when NEW_GC; need to convert gap array to Lisp object).

/* emodules.h - Declarations and definitions for XEmacs loadable modules.
(C) Copyright 1998, 1999 J. Kean Johnston. All rights reserved.

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.  */

#ifndef EMODULES_HDR

#ifndef EMODULES_GATHER_VERSION
#define EMODULES_HDR
#endif

#define EMODULES_VERSION    "1.1.0"
#define EMODULES_MAJOR      1
#define EMODULES_MINOR      1
#define EMODULES_PATCH      0
#define EMODULES_REVISION   (long)((EMODULES_MAJOR * 1000) + \
                             (EMODULES_MINOR * 10) + \
                             (EMODULES_PATCH))

#ifndef EMODULES_GATHER_VERSION
#include <config.h>
#include "lisp.h"
#include "sysdep.h"
#include "window.h"
#include "buffer.h"
#include "insdel.h"
#include "frame.h"
#include "lstream.h"
#include "file-coding.h"

/* Module loading technology version number */
extern Lisp_Object Vmodule_version;

/* XEmacs version Information */
extern Lisp_Object Vemacs_major_version;
extern Lisp_Object Vemacs_minor_version;

/*
 * Load in a C module. The first argument is the name of the .so file, the
 * second is the name of the module, and the third is the module version.
 * If the module name is NULL, we will always reload the .so. If it is not
 * NULL, we check to make sure we haven't loaded it before. If the version
 * is specified, we check to make sure we didn't load the module of the
 * specified version before. We also use these as checks when we open the
 * module to make sure we have the right module.
 */
extern void emodules_load (const Ibyte *module, const Ibyte *modname,
			   const Ibyte *modver);

/*
 * Because subrs and symbols added by a dynamic module are not part of
 * the make-docfile process, we need a clean way to get the variables
 * and functions documented. Since people don't like the idea of making
 * shared modules use different versions of DEFSUBR() and DEFVAR_LISP()
 * and friends, we need these two functions to insert the documentation
 * into the right place. These functions will be called by the module
 * init code, generated by ellcc during initialization mode.
 */
EXTERN_C MODULE_API void emodules_doc_subr (const Ascbyte *objname,
					    const Ascbyte *docstr);
EXTERN_C MODULE_API void emodules_doc_sym (const Ascbyte *objname,
					   const Ascbyte *docstr);

#define CDOCSUBR(Fname, DOC) emodules_doc_subr (Fname, DOC)
#define CDOCSYM(Sname, DOC)  emodules_doc_sym  (Sname, DOC)
#endif /* EMODULES_GATHER_VERSION */

/* We should not expose module entities to the portable dumper. */
#if defined(PDUMP) && defined(EMACS_MODULE)
#undef dump_add_root_block_ptr
#define dump_add_root_block_ptr(varaddr,descaddr) DO_NOTHING
#undef dump_add_opaque
#define dump_add_opaque(varaddr,size) DO_NOTHING
#undef dump_add_root_block
#define dump_add_root_block(ptraddress,desc) DO_NOTHING
#undef dump_add_opaque_int
#define dump_add_opaque_int(int_varaddr) DO_NOTHING
#undef dump_add_opaque_fixnum
#define dump_add_opaque_fixnum(fixnum_varaddr) DO_NOTHING
#undef dump_add_root_lisp_object
#define dump_add_root_lisp_object(varaddr) DO_NOTHING
#undef dump_add_weak_object_chain
#define dump_add_weak_object_chain(varaddr) DO_NOTHING
#undef staticpro
#define staticpro(DSF_location) staticpro_nodump(DSF_location)
#undef unstaticpro
#define unstaticpro(DSF_location) unstaticpro_nodump(DFS_location)

#undef DEFSYMBOL
#define DEFSYMBOL(name) DEFSYMBOL_NO_DUMP (name)
#undef DEFSYMBOL_MULTIWORD_PREDICATE
#define DEFSYMBOL_MULTIWORD_PREDICATE(name) \
        DEFSYMBOL_MULTIWORD_PREDICATE_NO_DUMP (name)
#undef defsymbol
#define defsymbol(location,name) defsymbol_nodump (location, name)

#endif /* defined(PDUMP) && defined(EMACS_MODULE) */

#endif /* EMODULES_HDR */