xemacs-beta: src/alloc.c comparison

comparison src/alloc.c @ 428:3ecd8885ac67 r21-2-22

Import from CVS: tag r21-2-22

author	cvs
date	Mon, 13 Aug 2007 11:28:15 +0200
parents
children	84b14dcb0985

comparison

equal deleted inserted replaced

-:0a0253eac470
+:3ecd8885ac67
+/* Storage allocation and gc for XEmacs Lisp interpreter.
+Copyright (C) 1985-1998 Free Software Foundation, Inc.
+Copyright (C) 1995 Sun Microsystems, Inc.
+Copyright (C) 1995, 1996 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: FSF 19.28, Mule 2.0.  Substantially different from
+FSF. */
+/* Authorship:
+FSF: Original version; a long time ago.
+Mly: Significantly rewritten to use new 3-bit tags and
+nicely abstracted object definitions, for 19.8.
+JWZ: Improved code to keep track of purespace usage and
+issue nice purespace and GC stats.
+Ben Wing: Cleaned up frob-block lrecord code, added error-checking
+and various changes for Mule, for 19.12.
+Added bit vectors for 19.13.
+	Added lcrecord lists for 19.14.
+slb: Lots of work on the purification and dump time code.
+Synched Doug Lea malloc support from Emacs 20.2.
+og:  Killed the purespace.  Portable dumper.
+*/
+#include <config.h>
+#include "lisp.h"
+#include "backtrace.h"
+#include "buffer.h"
+#include "bytecode.h"
+#include "chartab.h"
+#include "device.h"
+#include "elhash.h"
+#include "events.h"
+#include "extents.h"
+#include "frame.h"
+#include "glyphs.h"
+#include "opaque.h"
+#include "redisplay.h"
+#include "specifier.h"
+#include "sysfile.h"
+#include "window.h"
+#include "console-stream.h"
+#ifdef DOUG_LEA_MALLOC
+#include <malloc.h>
+#endif
+#ifdef HAVE_MMAP
+#include <unistd.h>
+#include <sys/mman.h>
+#endif
+#ifdef PDUMP
+typedef struct
+{
+const struct lrecord_description *desc;
+int count;
+} pdump_reloc_table;
+static char *pdump_rt_list = 0;
+#endif
+EXFUN (Fgarbage_collect, 0);
+/* Return the true size of a struct with a variable-length array field.  */
+#define STRETCHY_STRUCT_SIZEOF(stretchy_struct_type,		\
+			       stretchy_array_field,		\
+			       stretchy_array_length)		\
+(offsetof (stretchy_struct_type, stretchy_array_field) +	\
+(offsetof (stretchy_struct_type, stretchy_array_field[1]) -	\
+offsetof (stretchy_struct_type, stretchy_array_field[0])) *	\
+(stretchy_array_length))
+#if 0 /* this is _way_ too slow to be part of the standard debug options */
+#if defined(DEBUG_XEMACS) && defined(MULE)
+#define VERIFY_STRING_CHARS_INTEGRITY
+#endif
+#endif
+/* Define this to use malloc/free with no freelist for all datatypes,
+the hope being that some debugging tools may help detect
+freed memory references */
+#ifdef USE_DEBUG_MALLOC	/* Taking the above comment at face value -slb */
+#include <dmalloc.h>
+#define ALLOC_NO_POOLS
+#endif
+#ifdef DEBUG_XEMACS
+static int debug_allocation;
+static int debug_allocation_backtrace_length;
+#endif
+/* Number of bytes of consing done since the last gc */
+EMACS_INT consing_since_gc;
+#define INCREMENT_CONS_COUNTER_1(size) (consing_since_gc += (size))
+#define debug_allocation_backtrace()				\
+do {								\
+if (debug_allocation_backtrace_length > 0)			\
+debug_short_backtrace (debug_allocation_backtrace_length);	\
+} while (0)
+#ifdef DEBUG_XEMACS
+#define INCREMENT_CONS_COUNTER(foosize, type)			\
+do {								\
+if (debug_allocation)					\
+{								\
+	stderr_out ("allocating %s (size %ld)\n", type, (long)foosize);	\
+	debug_allocation_backtrace ();				\
+}								\
+INCREMENT_CONS_COUNTER_1 (foosize);				\
+} while (0)
+#define NOSEEUM_INCREMENT_CONS_COUNTER(foosize, type)		\
+do {								\
+if (debug_allocation > 1)					\
+{								\
+	stderr_out ("allocating noseeum %s (size %ld)\n", type, (long)foosize); \
+	debug_allocation_backtrace ();				\
+}								\
+INCREMENT_CONS_COUNTER_1 (foosize);				\
+} while (0)
+#else
+#define INCREMENT_CONS_COUNTER(size, type) INCREMENT_CONS_COUNTER_1 (size)
+#define NOSEEUM_INCREMENT_CONS_COUNTER(size, type) \
+INCREMENT_CONS_COUNTER_1 (size)
+#endif
+#define DECREMENT_CONS_COUNTER(size) do {	\
+consing_since_gc -= (size);			\
+if (consing_since_gc < 0)			\
+consing_since_gc = 0;			\
+} while (0)
+/* Number of bytes of consing since gc before another gc should be done. */
+EMACS_INT gc_cons_threshold;
+/* Nonzero during gc */
+int gc_in_progress;
+/* Number of times GC has happened at this level or below.
+* Level 0 is most volatile, contrary to usual convention.
+*  (Of course, there's only one level at present) */
+EMACS_INT gc_generation_number[1];
+/* This is just for use by the printer, to allow things to print uniquely */
+static int lrecord_uid_counter;
+/* Nonzero when calling certain hooks or doing other things where
+a GC would be bad */
+int gc_currently_forbidden;
+/* Hooks. */
+Lisp_Object Vpre_gc_hook, Qpre_gc_hook;
+Lisp_Object Vpost_gc_hook, Qpost_gc_hook;
+/* "Garbage collecting" */
+Lisp_Object Vgc_message;
+Lisp_Object Vgc_pointer_glyph;
+static CONST char gc_default_message[] = "Garbage collecting";
+Lisp_Object Qgarbage_collecting;
+#ifndef VIRT_ADDR_VARIES
+extern
+#endif /* VIRT_ADDR_VARIES */
+EMACS_INT malloc_sbrk_used;
+#ifndef VIRT_ADDR_VARIES
+extern
+#endif /* VIRT_ADDR_VARIES */
+EMACS_INT malloc_sbrk_unused;
+/* Non-zero means we're in the process of doing the dump */
+int purify_flag;
+#ifdef ERROR_CHECK_TYPECHECK
+Error_behavior ERROR_ME, ERROR_ME_NOT, ERROR_ME_WARN;
+#endif
+int
+c_readonly (Lisp_Object obj)
+{
+return POINTER_TYPE_P (XTYPE (obj)) && C_READONLY (obj);
+}
+int
+lisp_readonly (Lisp_Object obj)
+{
+return POINTER_TYPE_P (XTYPE (obj)) && LISP_READONLY (obj);
+}
+/* Maximum amount of C stack to save when a GC happens.  */
+#ifndef MAX_SAVE_STACK
+#define MAX_SAVE_STACK 0 /* 16000 */
+#endif
+/* Non-zero means ignore malloc warnings.  Set during initialization.  */
+int ignore_malloc_warnings;
+static void *breathing_space;
+void
+release_breathing_space (void)
+{
+if (breathing_space)
+{
+void *tmp = breathing_space;
+breathing_space = 0;
+xfree (tmp);
+}
+}
+/* malloc calls this if it finds we are near exhausting storage */
+void
+malloc_warning (CONST char *str)
+{
+if (ignore_malloc_warnings)
+return;
+warn_when_safe
+(Qmemory, Qcritical,
+"%s\n"
+"Killing some buffers may delay running out of memory.\n"
+"However, certainly by the time you receive the 95%% warning,\n"
+"you should clean up, kill this Emacs, and start a new one.",
+str);
+}
+/* Called if malloc returns zero */
+DOESNT_RETURN
+memory_full (void)
+{
+/* Force a GC next time eval is called.
+It's better to loop garbage-collecting (we might reclaim enough
+to win) than to loop beeping and barfing "Memory exhausted"
+*/
+consing_since_gc = gc_cons_threshold + 1;
+release_breathing_space ();
+/* Flush some histories which might conceivably contain garbalogical
+inhibitors.  */
+if (!NILP (Fboundp (Qvalues)))
+Fset (Qvalues, Qnil);
+Vcommand_history = Qnil;
+error ("Memory exhausted");
+}
+/* like malloc and realloc but check for no memory left, and block input. */
+#ifdef xmalloc
+#undef xmalloc
+#endif
+void *
+xmalloc (size_t size)
+{
+void *val = malloc (size);
+if (!val && (size != 0)) memory_full ();
+return val;
+}
+#ifdef xcalloc
+#undef xcalloc
+#endif
+static void *
+xcalloc (size_t nelem, size_t elsize)
+{
+void *val = calloc (nelem, elsize);
+if (!val && (nelem != 0)) memory_full ();
+return val;
+}
+void *
+xmalloc_and_zero (size_t size)
+{
+return xcalloc (size, sizeof (char));
+}
+#ifdef xrealloc
+#undef xrealloc
+#endif
+void *
+xrealloc (void *block, size_t size)
+{
+/* We must call malloc explicitly when BLOCK is 0, since some
+reallocs don't do this.  */
+void *val = block ? realloc (block, size) : malloc (size);
+if (!val && (size != 0)) memory_full ();
+return val;
+}
+void
+#ifdef ERROR_CHECK_MALLOC
+xfree_1 (void *block)
+#else
+xfree (void *block)
+#endif
+{
+#ifdef ERROR_CHECK_MALLOC
+/* Unbelievably, calling free() on 0xDEADBEEF doesn't cause an
+error until much later on for many system mallocs, such as
+the one that comes with Solaris 2.3.  FMH!! */
+assert (block != (void *) 0xDEADBEEF);
+assert (block);
+#endif /* ERROR_CHECK_MALLOC */
+free (block);
+}
+#ifdef ERROR_CHECK_GC
+#if SIZEOF_INT == 4
+typedef unsigned int four_byte_t;
+#elif SIZEOF_LONG == 4
+typedef unsigned long four_byte_t;
+#elif SIZEOF_SHORT == 4
+typedef unsigned short four_byte_t;
+#else
+What kind of strange-ass system are we running on?
+#endif
+static void
+deadbeef_memory (void *ptr, size_t size)
+{
+four_byte_t *ptr4 = (four_byte_t *) ptr;
+size_t beefs = size >> 2;
+/* In practice, size will always be a multiple of four.  */
+while (beefs--)
+(*ptr4++) = 0xDEADBEEF;
+}
+#else /* !ERROR_CHECK_GC */
+#define deadbeef_memory(ptr, size)
+#endif /* !ERROR_CHECK_GC */
+#ifdef xstrdup
+#undef xstrdup
+#endif
+char *
+xstrdup (CONST char *str)
+{
+int len = strlen (str) + 1;   /* for stupid terminating 0 */
+void *val = xmalloc (len);
+if (val == 0) return 0;
+return (char *) memcpy (val, str, len);
+}
+#ifdef NEED_STRDUP
+char *
+strdup (CONST char *s)
+{
+return xstrdup (s);
+}
+#endif /* NEED_STRDUP */
+static void *
+allocate_lisp_storage (size_t size)
+{
+return xmalloc (size);
+}
+/* lrecords are chained together through their "next.v" field.
+* After doing the mark phase, the GC will walk this linked
+*  list and free any record which hasn't been marked.
+*/
+static struct lcrecord_header *all_lcrecords;
+void *
+alloc_lcrecord (size_t size, CONST struct lrecord_implementation *implementation)
+{
+struct lcrecord_header *lcheader;
+#ifdef ERROR_CHECK_GC
+if (implementation->static_size == 0)
+assert (implementation->size_in_bytes_method);
+else
+assert (implementation->static_size == size);
+#endif
+lcheader = (struct lcrecord_header *) allocate_lisp_storage (size);
+set_lheader_implementation (&(lcheader->lheader), implementation);
+lcheader->next = all_lcrecords;
+#if 1                           /* mly prefers to see small ID numbers */
+lcheader->uid = lrecord_uid_counter++;
+#else				/* jwz prefers to see real addrs */
+lcheader->uid = (int) &lcheader;
+#endif
+lcheader->free = 0;
+all_lcrecords = lcheader;
+INCREMENT_CONS_COUNTER (size, implementation->name);
+return lcheader;
+}
+#if 0 /* Presently unused */
+/* Very, very poor man's EGC?
+* This may be slow and thrash pages all over the place.
+*  Only call it if you really feel you must (and if the
+*  lrecord was fairly recently allocated).
+* Otherwise, just let the GC do its job -- that's what it's there for
+*/
+void
+free_lcrecord (struct lcrecord_header *lcrecord)
+{
+if (all_lcrecords == lcrecord)
+{
+all_lcrecords = lcrecord->next;
+}
+else
+{
+struct lrecord_header *header = all_lcrecords;
+for (;;)
+	{
+	  struct lrecord_header *next = header->next;
+	  if (next == lcrecord)
+	    {
+	      header->next = lrecord->next;
+	      break;
+	    }
+	  else if (next == 0)
+	    abort ();
+	  else
+	    header = next;
+	}
+}
+if (lrecord->implementation->finalizer)
+lrecord->implementation->finalizer (lrecord, 0);
+xfree (lrecord);
+return;
+}
+#endif /* Unused */
+static void
+disksave_object_finalization_1 (void)
+{
+struct lcrecord_header *header;
+for (header = all_lcrecords; header; header = header->next)
+{
+if (LHEADER_IMPLEMENTATION(&header->lheader)->finalizer &&
+	  !header->free)
+	((LHEADER_IMPLEMENTATION(&header->lheader)->finalizer)
+	 (header, 1));
+}
+}
+/* Semi-kludge -- lrecord_symbol_value_forward objects get stuck
+in CONST space and you get SEGV's if you attempt to mark them.
+This sits in lheader->implementation->marker. */
+Lisp_Object
+this_one_is_unmarkable (Lisp_Object obj)
+{
+abort ();
+return Qnil;
+}
+/************************************************************************/
+/*			  Debugger support				*/
+/************************************************************************/
+/* Give gdb/dbx enough information to decode Lisp Objects.  We make
+sure certain symbols are always defined, so gdb doesn't complain
+about expressions in src/gdbinit.  See src/gdbinit or src/dbxrc to
+see how this is used.  */
+EMACS_UINT dbg_valmask = ((1UL << VALBITS) - 1) << GCBITS;
+EMACS_UINT dbg_typemask = (1UL << GCTYPEBITS) - 1;
+#ifdef USE_UNION_TYPE
+unsigned char dbg_USE_UNION_TYPE = 1;
+#else
+unsigned char dbg_USE_UNION_TYPE = 0;
+#endif
+unsigned char Lisp_Type_Int = 100;
+unsigned char Lisp_Type_Cons = 101;
+unsigned char Lisp_Type_String = 102;
+unsigned char Lisp_Type_Vector = 103;
+unsigned char Lisp_Type_Symbol = 104;
+#ifndef MULE
+unsigned char lrecord_char_table_entry;
+unsigned char lrecord_charset;
+#ifndef FILE_CODING
+unsigned char lrecord_coding_system;
+#endif
+#endif
+#ifndef HAVE_TOOLBARS
+unsigned char lrecord_toolbar_button;
+#endif
+#ifndef TOOLTALK
+unsigned char lrecord_tooltalk_message;
+unsigned char lrecord_tooltalk_pattern;
+#endif
+#ifndef HAVE_DATABASE
+unsigned char lrecord_database;
+#endif
+unsigned char dbg_valbits = VALBITS;
+unsigned char dbg_gctypebits = GCTYPEBITS;
+/* Macros turned into functions for ease of debugging.
+Debuggers don't know about macros! */
+int dbg_eq (Lisp_Object obj1, Lisp_Object obj2);
+int
+dbg_eq (Lisp_Object obj1, Lisp_Object obj2)
+{
+return EQ (obj1, obj2);
+}
+/************************************************************************/
+/*			  Fixed-size type macros			*/
+/************************************************************************/
+/* For fixed-size types that are commonly used, we malloc() large blocks
+of memory at a time and subdivide them into chunks of the correct
+size for an object of that type.  This is more efficient than
+malloc()ing each object separately because we save on malloc() time
+and overhead due to the fewer number of malloc()ed blocks, and
+also because we don't need any extra pointers within each object
+to keep them threaded together for GC purposes.  For less common
+(and frequently large-size) types, we use lcrecords, which are
+malloc()ed individually and chained together through a pointer
+in the lcrecord header.  lcrecords do not need to be fixed-size
+(i.e. two objects of the same type need not have the same size;
+however, the size of a particular object cannot vary dynamically).
+It is also much easier to create a new lcrecord type because no
+additional code needs to be added to alloc.c.  Finally, lcrecords
+may be more efficient when there are only a small number of them.
+The types that are stored in these large blocks (or "frob blocks")
+are cons, float, compiled-function, symbol, marker, extent, event,
+and string.
+Note that strings are special in that they are actually stored in
+two parts: a structure containing information about the string, and
+the actual data associated with the string.  The former structure
+(a struct Lisp_String) is a fixed-size structure and is managed the
+same way as all the other such types.  This structure contains a
+pointer to the actual string data, which is stored in structures of
+type struct string_chars_block.  Each string_chars_block consists
+of a pointer to a struct Lisp_String, followed by the data for that
+string, followed by another pointer to a struct Lisp_String,
+followed by the data for that string, etc.  At GC time, the data in
+these blocks is compacted by searching sequentially through all the
+blocks and compressing out any holes created by unmarked strings.
+Strings that are more than a certain size (bigger than the size of
+a string_chars_block, although something like half as big might
+make more sense) are malloc()ed separately and not stored in
+string_chars_blocks.  Furthermore, no one string stretches across
+two string_chars_blocks.
+Vectors are each malloc()ed separately, similar to lcrecords.
+In the following discussion, we use conses, but it applies equally
+well to the other fixed-size types.
+We store cons cells inside of cons_blocks, allocating a new
+cons_block with malloc() whenever necessary.  Cons cells reclaimed
+by GC are put on a free list to be reallocated before allocating
+any new cons cells from the latest cons_block.  Each cons_block is
+just under 2^n - MALLOC_OVERHEAD bytes long, since malloc (at least
+the versions in malloc.c and gmalloc.c) really allocates in units
+of powers of two and uses 4 bytes for its own overhead.
+What GC actually does is to search through all the cons_blocks,
+from the most recently allocated to the oldest, and put all
+cons cells that are not marked (whether or not they're already
+free) on a cons_free_list.  The cons_free_list is a stack, and
+so the cons cells in the oldest-allocated cons_block end up
+at the head of the stack and are the first to be reallocated.
+If any cons_block is entirely free, it is freed with free()
+and its cons cells removed from the cons_free_list.  Because
+the cons_free_list ends up basically in memory order, we have
+a high locality of reference (assuming a reasonable turnover
+of allocating and freeing) and have a reasonable probability
+of entirely freeing up cons_blocks that have been more recently
+allocated.  This stage is called the "sweep stage" of GC, and
+is executed after the "mark stage", which involves starting
+from all places that are known to point to in-use Lisp objects
+(e.g. the obarray, where are all symbols are stored; the
+current catches and condition-cases; the backtrace list of
+currently executing functions; the gcpro list; etc.) and
+recursively marking all objects that are accessible.
+At the beginning of the sweep stage, the conses in the cons
+blocks are in one of three states: in use and marked, in use
+but not marked, and not in use (already freed).  Any conses
+that are marked have been marked in the mark stage just
+executed, because as part of the sweep stage we unmark any
+marked objects.  The way we tell whether or not a cons cell
+is in use is through the FREE_STRUCT_P macro.  This basically
+looks at the first 4 bytes (or however many bytes a pointer
+fits in) to see if all the bits in those bytes are 1.  The
+resulting value (0xFFFFFFFF) is not a valid pointer and is
+not a valid Lisp_Object.  All current fixed-size types have
+a pointer or Lisp_Object as their first element with the
+exception of strings; they have a size value, which can
+never be less than zero, and so 0xFFFFFFFF is invalid for
+strings as well.  Now assuming that a cons cell is in use,
+the way we tell whether or not it is marked is to look at
+the mark bit of its car (each Lisp_Object has one bit
+reserved as a mark bit, in case it's needed).  Note that
+different types of objects use different fields to indicate
+whether the object is marked, but the principle is the same.
+Conses on the free_cons_list are threaded through a pointer
+stored in the bytes directly after the bytes that are set
+to 0xFFFFFFFF (we cannot overwrite these because the cons
+is still in a cons_block and needs to remain marked as
+not in use for the next time that GC happens).  This
+implies that all fixed-size types must be at least big
+enough to store two pointers, which is indeed the case
+for all current fixed-size types.
+Some types of objects need additional "finalization" done
+when an object is converted from in use to not in use;
+this is the purpose of the ADDITIONAL_FREE_type macro.
+For example, markers need to be removed from the chain
+of markers that is kept in each buffer.  This is because
+markers in a buffer automatically disappear if the marker
+is no longer referenced anywhere (the same does not
+apply to extents, however).
+WARNING: Things are in an extremely bizarre state when
+the ADDITIONAL_FREE_type macros are called, so beware!
+When ERROR_CHECK_GC is defined, we do things differently
+so as to maximize our chances of catching places where
+there is insufficient GCPROing.  The thing we want to
+avoid is having an object that we're using but didn't
+GCPRO get freed by GC and then reallocated while we're
+in the process of using it -- this will result in something
+seemingly unrelated getting trashed, and is extremely
+difficult to track down.  If the object gets freed but
+not reallocated, we can usually catch this because we
+set all bytes of a freed object to 0xDEADBEEF. (The
+first four bytes, however, are 0xFFFFFFFF, and the next
+four are a pointer used to chain freed objects together;
+we play some tricks with this pointer to make it more
+bogus, so crashes are more likely to occur right away.)
+We want freed objects to stay free as long as possible,
+so instead of doing what we do above, we maintain the
+free objects in a first-in first-out queue.  We also
+don't recompute the free list each GC, unlike above;
+this ensures that the queue ordering is preserved.
+[This means that we are likely to have worse locality
+of reference, and that we can never free a frob block
+once it's allocated. (Even if we know that all cells
+in it are free, there's no easy way to remove all those
+cells from the free list because the objects on the
+free list are unlikely to be in memory order.)]
+Furthermore, we never take objects off the free list
+unless there's a large number (usually 1000, but
+varies depending on type) of them already on the list.
+This way, we ensure that an object that gets freed will
+remain free for the next 1000 (or whatever) times that
+an object of that type is allocated.
+*/
+#ifndef MALLOC_OVERHEAD
+#ifdef GNU_MALLOC
+#define MALLOC_OVERHEAD 0
+#elif defined (rcheck)
+#define MALLOC_OVERHEAD 20
+#else
+#define MALLOC_OVERHEAD 8
+#endif
+#endif /* MALLOC_OVERHEAD */
+#if !defined(HAVE_MMAP) || defined(DOUG_LEA_MALLOC)
+/* If we released our reserve (due to running out of memory),
+and we have a fair amount free once again,
+try to set aside another reserve in case we run out once more.
+This is called when a relocatable block is freed in ralloc.c.  */
+void refill_memory_reserve (void);
+void
+refill_memory_reserve ()
+{
+if (breathing_space == 0)
+breathing_space = (char *) malloc (4096 - MALLOC_OVERHEAD);
+}
+#endif
+#ifdef ALLOC_NO_POOLS
+# define TYPE_ALLOC_SIZE(type, structtype) 1
+#else
+# define TYPE_ALLOC_SIZE(type, structtype)			\
+((2048 - MALLOC_OVERHEAD - sizeof (struct type##_block *))	\
+/ sizeof (structtype))
+#endif /* ALLOC_NO_POOLS */
+#define DECLARE_FIXED_TYPE_ALLOC(type, structtype)	\
+							\
+struct type##_block					\
+{							\
+struct type##_block *prev;				\
+structtype block[TYPE_ALLOC_SIZE (type, structtype)];	\
+};							\
+							\
+static struct type##_block *current_##type##_block;	\
+static int current_##type##_block_index;		\
+							\
+static structtype *type##_free_list;			\
+static structtype *type##_free_list_tail;		\
+							\
+static void						\
+init_##type##_alloc (void)				\
+{							\
+current_##type##_block = 0;				\
+current_##type##_block_index =			\
+countof (current_##type##_block->block);		\
+type##_free_list = 0;					\
+type##_free_list_tail = 0;				\
+}							\
+							\
+static int gc_count_num_##type##_in_use;		\
+static int gc_count_num_##type##_freelist
+#define ALLOCATE_FIXED_TYPE_FROM_BLOCK(type, result) do {		\
+if (current_##type##_block_index					\
+== countof (current_##type##_block->block))			\
+{									\
+struct type##_block *AFTFB_new = (struct type##_block *)		\
+	allocate_lisp_storage (sizeof (struct type##_block));		\
+AFTFB_new->prev = current_##type##_block;				\
+current_##type##_block = AFTFB_new;				\
+current_##type##_block_index = 0;					\
+}									\
+(result) =								\
+&(current_##type##_block->block[current_##type##_block_index++]);	\
+} while (0)
+/* Allocate an instance of a type that is stored in blocks.
+TYPE is the "name" of the type, STRUCTTYPE is the corresponding
+structure type. */
+#ifdef ERROR_CHECK_GC
+/* Note: if you get crashes in this function, suspect incorrect calls
+to free_cons() and friends.  This happened once because the cons
+cell was not GC-protected and was getting collected before
+free_cons() was called. */
+#define ALLOCATE_FIXED_TYPE_1(type, structtype, result)			 \
+do									 \
+{									 \
+if (gc_count_num_##type##_freelist >					 \
+MINIMUM_ALLOWED_FIXED_TYPE_CELLS_##type) 				 \
+{									 \
+result = type##_free_list;					 \
+/* Before actually using the chain pointer, we complement all its	 \
+bits; see FREE_FIXED_TYPE(). */				 \
+type##_free_list =						 \
+(structtype *) ~(unsigned long)					 \
+(* (structtype **) ((char *) result + sizeof (void *)));	 \
+gc_count_num_##type##_freelist--;					 \
+}									 \
+else									 \
+ALLOCATE_FIXED_TYPE_FROM_BLOCK (type, result);			 \
+MARK_STRUCT_AS_NOT_FREE (result);					 \
+} while (0)
+#else /* !ERROR_CHECK_GC */
+#define ALLOCATE_FIXED_TYPE_1(type, structtype, result)		\
+do								\
+{								\
+if (type##_free_list)						\
+{								\
+result = type##_free_list;				\
+type##_free_list =					\
+* (structtype **) ((char *) result + sizeof (void *));	\
+}								\
+else								\
+ALLOCATE_FIXED_TYPE_FROM_BLOCK (type, result);		\
+MARK_STRUCT_AS_NOT_FREE (result);				\
+} while (0)
+#endif /* !ERROR_CHECK_GC */
+#define ALLOCATE_FIXED_TYPE(type, structtype, result)	\
+do							\
+{							\
+ALLOCATE_FIXED_TYPE_1 (type, structtype, result);	\
+INCREMENT_CONS_COUNTER (sizeof (structtype), #type);	\
+} while (0)
+#define NOSEEUM_ALLOCATE_FIXED_TYPE(type, structtype, result)	\
+do								\
+{								\
+ALLOCATE_FIXED_TYPE_1 (type, structtype, result);		\
+NOSEEUM_INCREMENT_CONS_COUNTER (sizeof (structtype), #type);	\
+} while (0)
+/* INVALID_POINTER_VALUE should be a value that is invalid as a pointer
+to a Lisp object and invalid as an actual Lisp_Object value.  We have
+to make sure that this value cannot be an integer in Lisp_Object form.
+0xFFFFFFFF could be so on a 64-bit system, so we extend it to 64 bits.
+On a 32-bit system, the type bits will be non-zero, making the value
+be a pointer, and the pointer will be misaligned.
+Even if Emacs is run on some weirdo system that allows and allocates
+byte-aligned pointers, this pointer is at the very top of the address
+space and so it's almost inconceivable that it could ever be valid. */
+#if INTBITS == 32
+# define INVALID_POINTER_VALUE 0xFFFFFFFF
+#elif INTBITS == 48
+# define INVALID_POINTER_VALUE 0xFFFFFFFFFFFF
+#elif INTBITS == 64
+# define INVALID_POINTER_VALUE 0xFFFFFFFFFFFFFFFF
+#else
+You have some weird system and need to supply a reasonable value here.
+#endif
+#define FREE_STRUCT_P(ptr) \
+(* (void **) ptr == (void *) INVALID_POINTER_VALUE)
+#define MARK_STRUCT_AS_FREE(ptr) \
+(* (void **) ptr = (void *) INVALID_POINTER_VALUE)
+#define MARK_STRUCT_AS_NOT_FREE(ptr) \
+(* (void **) ptr = 0)
+#ifdef ERROR_CHECK_GC
+#define PUT_FIXED_TYPE_ON_FREE_LIST(type, structtype, ptr)		\
+do { if (type##_free_list_tail)						\
+{								\
+	 /* When we store the chain pointer, we complement all		\
+	    its bits; this should significantly increase its		\
+	    bogosity in case someone tries to use the value, and	\
+	    should make us dump faster if someone stores something	\
+	    over the pointer because when it gets un-complemented in	\
+	    ALLOCATED_FIXED_TYPE(), the resulting pointer will be	\
+	    extremely bogus. */						\
+	 * (structtype **)						\
+	   ((char *) type##_free_list_tail + sizeof (void *)) =		\
+	     (structtype *) ~(unsigned long) ptr;			\
+}								\
+else								\
+type##_free_list = ptr;						\
+type##_free_list_tail = ptr;					\
+} while (0)
+#else /* !ERROR_CHECK_GC */
+#define PUT_FIXED_TYPE_ON_FREE_LIST(type, structtype, ptr)	\
+do { * (structtype **) ((char *) (ptr) + sizeof (void *)) =	\
+type##_free_list;					\
+type##_free_list = (ptr);					\
+} while (0)
+#endif /* !ERROR_CHECK_GC */
+/* TYPE and STRUCTTYPE are the same as in ALLOCATE_FIXED_TYPE(). */
+#define FREE_FIXED_TYPE(type, structtype, ptr) do {		\
+structtype *FFT_ptr = (ptr);					\
+ADDITIONAL_FREE_##type (FFT_ptr);				\
+deadbeef_memory (FFT_ptr, sizeof (structtype));		\
+PUT_FIXED_TYPE_ON_FREE_LIST (type, structtype, FFT_ptr);	\
+MARK_STRUCT_AS_FREE (FFT_ptr);				\
+} while (0)
+/* Like FREE_FIXED_TYPE() but used when we are explicitly
+freeing a structure through free_cons(), free_marker(), etc.
+rather than through the normal process of sweeping.
+We attempt to undo the changes made to the allocation counters
+as a result of this structure being allocated.  This is not
+completely necessary but helps keep things saner: e.g. this way,
+repeatedly allocating and freeing a cons will not result in
+the consing-since-gc counter advancing, which would cause a GC
+and somewhat defeat the purpose of explicitly freeing. */
+#define FREE_FIXED_TYPE_WHEN_NOT_IN_GC(type, structtype, ptr)	\
+do { FREE_FIXED_TYPE (type, structtype, ptr);			\
+DECREMENT_CONS_COUNTER (sizeof (structtype));		\
+gc_count_num_##type##_freelist++;				\
+} while (0)
+/************************************************************************/
+/*			   Cons allocation				*/
+/************************************************************************/
+DECLARE_FIXED_TYPE_ALLOC (cons, struct Lisp_Cons);
+/* conses are used and freed so often that we set this really high */
+/* #define MINIMUM_ALLOWED_FIXED_TYPE_CELLS_cons 20000 */
+#define MINIMUM_ALLOWED_FIXED_TYPE_CELLS_cons 2000
+static Lisp_Object
+mark_cons (Lisp_Object obj)
+{
+if (NILP (XCDR (obj)))
+return XCAR (obj);
+mark_object (XCAR (obj));
+return XCDR (obj);
+}
+static int
+cons_equal (Lisp_Object ob1, Lisp_Object ob2, int depth)
+{
+while (internal_equal (XCAR (ob1), XCAR (ob2), depth + 1))
+{
+ob1 = XCDR (ob1);
+ob2 = XCDR (ob2);
+if (! CONSP (ob1) || ! CONSP (ob2))
+	return internal_equal (ob1, ob2, depth + 1);
+}
+return 0;
+}
+static const struct lrecord_description cons_description[] = {
+{ XD_LISP_OBJECT, offsetof(struct Lisp_Cons, car), 2 },
+{ XD_END }
+};
+DEFINE_BASIC_LRECORD_IMPLEMENTATION ("cons", cons,
+				     mark_cons, print_cons, 0,
+				     cons_equal,
+				     /*
+				      * No `hash' method needed.
+				      * internal_hash knows how to
+				      * handle conses.
+				      */
+				     0,
+				     cons_description,
+				     struct Lisp_Cons);
+DEFUN ("cons", Fcons, 2, 2, 0, /*
+Create a new cons, give it CAR and CDR as components, and return it.
+*/
+(car, cdr))
+{
+/* This cannot GC. */
+Lisp_Object val;
+struct Lisp_Cons *c;
+ALLOCATE_FIXED_TYPE (cons, struct Lisp_Cons, c);
+set_lheader_implementation (&(c->lheader), &lrecord_cons);
+XSETCONS (val, c);
+c->car = car;
+c->cdr = cdr;
+return val;
+}
+/* This is identical to Fcons() but it used for conses that we're
+going to free later, and is useful when trying to track down
+"real" consing. */
+Lisp_Object
+noseeum_cons (Lisp_Object car, Lisp_Object cdr)
+{
+Lisp_Object val;
+struct Lisp_Cons *c;
+NOSEEUM_ALLOCATE_FIXED_TYPE (cons, struct Lisp_Cons, c);
+set_lheader_implementation (&(c->lheader), &lrecord_cons);
+XSETCONS (val, c);
+XCAR (val) = car;
+XCDR (val) = cdr;
+return val;
+}
+DEFUN ("list", Flist, 0, MANY, 0, /*
+Return a newly created list with specified arguments as elements.
+Any number of arguments, even zero arguments, are allowed.
+*/
+(int nargs, Lisp_Object *args))
+{
+Lisp_Object val = Qnil;
+Lisp_Object *argp = args + nargs;
+while (argp > args)
+val = Fcons (*--argp, val);
+return val;
+}
+Lisp_Object
+list1 (Lisp_Object obj0)
+{
+/* This cannot GC. */
+return Fcons (obj0, Qnil);
+}
+Lisp_Object
+list2 (Lisp_Object obj0, Lisp_Object obj1)
+{
+/* This cannot GC. */
+return Fcons (obj0, Fcons (obj1, Qnil));
+}
+Lisp_Object
+list3 (Lisp_Object obj0, Lisp_Object obj1, Lisp_Object obj2)
+{
+/* This cannot GC. */
+return Fcons (obj0, Fcons (obj1, Fcons (obj2, Qnil)));
+}
+Lisp_Object
+cons3 (Lisp_Object obj0, Lisp_Object obj1, Lisp_Object obj2)
+{
+/* This cannot GC. */
+return Fcons (obj0, Fcons (obj1, obj2));
+}
+Lisp_Object
+acons (Lisp_Object key, Lisp_Object value, Lisp_Object alist)
+{
+return Fcons (Fcons (key, value), alist);
+}
+Lisp_Object
+list4 (Lisp_Object obj0, Lisp_Object obj1, Lisp_Object obj2, Lisp_Object obj3)
+{
+/* This cannot GC. */
+return Fcons (obj0, Fcons (obj1, Fcons (obj2, Fcons (obj3, Qnil))));
+}
+Lisp_Object
+list5 (Lisp_Object obj0, Lisp_Object obj1, Lisp_Object obj2, Lisp_Object obj3,
+Lisp_Object obj4)
+{
+/* This cannot GC. */
+return Fcons (obj0, Fcons (obj1, Fcons (obj2, Fcons (obj3, Fcons (obj4, Qnil)))));
+}
+Lisp_Object
+list6 (Lisp_Object obj0, Lisp_Object obj1, Lisp_Object obj2, Lisp_Object obj3,
+Lisp_Object obj4, Lisp_Object obj5)
+{
+/* This cannot GC. */
+return Fcons (obj0, Fcons (obj1, Fcons (obj2, Fcons (obj3, Fcons (obj4, Fcons (obj5, Qnil))))));
+}
+DEFUN ("make-list", Fmake_list, 2, 2, 0, /*
+Return a new list of length LENGTH, with each element being INIT.
+*/
+(length, init))
+{
+CHECK_NATNUM (length);
+{
+Lisp_Object val = Qnil;
+size_t size = XINT (length);
+while (size--)
+val = Fcons (init, val);
+return val;
+}
+}
+/************************************************************************/
+/*			  Float allocation				*/
+/************************************************************************/
+#ifdef LISP_FLOAT_TYPE
+DECLARE_FIXED_TYPE_ALLOC (float, struct Lisp_Float);
+#define MINIMUM_ALLOWED_FIXED_TYPE_CELLS_float 1000
+Lisp_Object
+make_float (double float_value)
+{
+Lisp_Object val;
+struct Lisp_Float *f;
+ALLOCATE_FIXED_TYPE (float, struct Lisp_Float, f);
+set_lheader_implementation (&(f->lheader), &lrecord_float);
+float_data (f) = float_value;
+XSETFLOAT (val, f);
+return val;
+}
+#endif /* LISP_FLOAT_TYPE */
+/************************************************************************/
+/*			   Vector allocation				*/
+/************************************************************************/
+static Lisp_Object
+mark_vector (Lisp_Object obj)
+{
+Lisp_Vector *ptr = XVECTOR (obj);
+int len = vector_length (ptr);
+int i;
+for (i = 0; i < len - 1; i++)
+mark_object (ptr->contents[i]);
+return (len > 0) ? ptr->contents[len - 1] : Qnil;
+}
+static size_t
+size_vector (CONST void *lheader)
+{
+return STRETCHY_STRUCT_SIZEOF (Lisp_Vector, contents,
+				 ((Lisp_Vector *) lheader)->size);
+}
+static int
+vector_equal (Lisp_Object obj1, Lisp_Object obj2, int depth)
+{
+int len = XVECTOR_LENGTH (obj1);
+if (len != XVECTOR_LENGTH (obj2))
+return 0;
+{
+Lisp_Object *ptr1 = XVECTOR_DATA (obj1);
+Lisp_Object *ptr2 = XVECTOR_DATA (obj2);
+while (len--)
+if (!internal_equal (*ptr1++, *ptr2++, depth + 1))
+	return 0;
+}
+return 1;
+}
+static const struct lrecord_description vector_description[] = {
+{ XD_LONG,        offsetof(struct Lisp_Vector, size) },
+{ XD_LISP_OBJECT, offsetof(struct Lisp_Vector, contents), XD_INDIRECT(0, 0) },
+{ XD_END }
+};
+DEFINE_LRECORD_SEQUENCE_IMPLEMENTATION("vector", vector,
+				       mark_vector, print_vector, 0,
+				       vector_equal,
+				       /*
+				        * No `hash' method needed for
+				        * vectors.  internal_hash
+				        * knows how to handle vectors.
+				        */
+				       0,
+				       vector_description,
+				       size_vector, Lisp_Vector);
+/* #### should allocate `small' vectors from a frob-block */
+static Lisp_Vector *
+make_vector_internal (size_t sizei)
+{
+/* no vector_next */
+size_t sizem = STRETCHY_STRUCT_SIZEOF (Lisp_Vector, contents, sizei);
+Lisp_Vector *p = (Lisp_Vector *) alloc_lcrecord (sizem, &lrecord_vector);
+p->size = sizei;
+return p;
+}
+Lisp_Object
+make_vector (size_t length, Lisp_Object init)
+{
+Lisp_Vector *vecp = make_vector_internal (length);
+Lisp_Object *p = vector_data (vecp);
+while (length--)
+*p++ = init;
+{
+Lisp_Object vector;
+XSETVECTOR (vector, vecp);
+return vector;
+}
+}
+DEFUN ("make-vector", Fmake_vector, 2, 2, 0, /*
+Return a new vector of length LENGTH, with each element being INIT.
+See also the function `vector'.
+*/
+(length, init))
+{
+CONCHECK_NATNUM (length);
+return make_vector (XINT (length), init);
+}
+DEFUN ("vector", Fvector, 0, MANY, 0, /*
+Return a newly created vector with specified arguments as elements.
+Any number of arguments, even zero arguments, are allowed.
+*/
+(int nargs, Lisp_Object *args))
+{
+Lisp_Vector *vecp = make_vector_internal (nargs);
+Lisp_Object *p = vector_data (vecp);
+while (nargs--)
+*p++ = *args++;
+{
+Lisp_Object vector;
+XSETVECTOR (vector, vecp);
+return vector;
+}
+}
+Lisp_Object
+vector1 (Lisp_Object obj0)
+{
+return Fvector (1, &obj0);
+}
+Lisp_Object
+vector2 (Lisp_Object obj0, Lisp_Object obj1)
+{
+Lisp_Object args[2];
+args[0] = obj0;
+args[1] = obj1;
+return Fvector (2, args);
+}
+Lisp_Object
+vector3 (Lisp_Object obj0, Lisp_Object obj1, Lisp_Object obj2)
+{
+Lisp_Object args[3];
+args[0] = obj0;
+args[1] = obj1;
+args[2] = obj2;
+return Fvector (3, args);
+}
+#if 0 /* currently unused */
+Lisp_Object
+vector4 (Lisp_Object obj0, Lisp_Object obj1, Lisp_Object obj2,
+	 Lisp_Object obj3)
+{
+Lisp_Object args[4];
+args[0] = obj0;
+args[1] = obj1;
+args[2] = obj2;
+args[3] = obj3;
+return Fvector (4, args);
+}
+Lisp_Object
+vector5 (Lisp_Object obj0, Lisp_Object obj1, Lisp_Object obj2,
+	 Lisp_Object obj3, Lisp_Object obj4)
+{
+Lisp_Object args[5];
+args[0] = obj0;
+args[1] = obj1;
+args[2] = obj2;
+args[3] = obj3;
+args[4] = obj4;
+return Fvector (5, args);
+}
+Lisp_Object
+vector6 (Lisp_Object obj0, Lisp_Object obj1, Lisp_Object obj2,
+	 Lisp_Object obj3, Lisp_Object obj4, Lisp_Object obj5)
+{
+Lisp_Object args[6];
+args[0] = obj0;
+args[1] = obj1;
+args[2] = obj2;
+args[3] = obj3;
+args[4] = obj4;
+args[5] = obj5;
+return Fvector (6, args);
+}
+Lisp_Object
+vector7 (Lisp_Object obj0, Lisp_Object obj1, Lisp_Object obj2,
+	 Lisp_Object obj3, Lisp_Object obj4, Lisp_Object obj5,
+	 Lisp_Object obj6)
+{
+Lisp_Object args[7];
+args[0] = obj0;
+args[1] = obj1;
+args[2] = obj2;
+args[3] = obj3;
+args[4] = obj4;
+args[5] = obj5;
+args[6] = obj6;
+return Fvector (7, args);
+}
+Lisp_Object
+vector8 (Lisp_Object obj0, Lisp_Object obj1, Lisp_Object obj2,
+	 Lisp_Object obj3, Lisp_Object obj4, Lisp_Object obj5,
+	 Lisp_Object obj6, Lisp_Object obj7)
+{
+Lisp_Object args[8];
+args[0] = obj0;
+args[1] = obj1;
+args[2] = obj2;
+args[3] = obj3;
+args[4] = obj4;
+args[5] = obj5;
+args[6] = obj6;
+args[7] = obj7;
+return Fvector (8, args);
+}
+#endif /* unused */
+/************************************************************************/
+/*			 Bit Vector allocation				*/
+/************************************************************************/
+static Lisp_Object all_bit_vectors;
+/* #### should allocate `small' bit vectors from a frob-block */
+static struct Lisp_Bit_Vector *
+make_bit_vector_internal (size_t sizei)
+{
+size_t num_longs = BIT_VECTOR_LONG_STORAGE (sizei);
+size_t sizem = STRETCHY_STRUCT_SIZEOF (Lisp_Bit_Vector, bits, num_longs);
+Lisp_Bit_Vector *p = (Lisp_Bit_Vector *) allocate_lisp_storage (sizem);
+set_lheader_implementation (&(p->lheader), &lrecord_bit_vector);
+INCREMENT_CONS_COUNTER (sizem, "bit-vector");
+bit_vector_length (p) = sizei;
+bit_vector_next   (p) = all_bit_vectors;
+/* make sure the extra bits in the last long are 0; the calling
+functions might not set them. */
+p->bits[num_longs - 1] = 0;
+XSETBIT_VECTOR (all_bit_vectors, p);
+return p;
+}
+Lisp_Object
+make_bit_vector (size_t length, Lisp_Object init)
+{
+struct Lisp_Bit_Vector *p = make_bit_vector_internal (length);
+size_t num_longs = BIT_VECTOR_LONG_STORAGE (length);
+CHECK_BIT (init);
+if (ZEROP (init))
+memset (p->bits, 0, num_longs * sizeof (long));
+else
+{
+size_t bits_in_last = length & (LONGBITS_POWER_OF_2 - 1);
+memset (p->bits, ~0, num_longs * sizeof (long));
+/* But we have to make sure that the unused bits in the
+	 last long are 0, so that equal/hash is easy. */
+if (bits_in_last)
+	p->bits[num_longs - 1] &= (1 << bits_in_last) - 1;
+}
+{
+Lisp_Object bit_vector;
+XSETBIT_VECTOR (bit_vector, p);
+return bit_vector;
+}
+}
+Lisp_Object
+make_bit_vector_from_byte_vector (unsigned char *bytevec, size_t length)
+{
+int i;
+Lisp_Bit_Vector *p = make_bit_vector_internal (length);
+for (i = 0; i < length; i++)
+set_bit_vector_bit (p, i, bytevec[i]);
+{
+Lisp_Object bit_vector;
+XSETBIT_VECTOR (bit_vector, p);
+return bit_vector;
+}
+}
+DEFUN ("make-bit-vector", Fmake_bit_vector, 2, 2, 0, /*
+Return a new bit vector of length LENGTH. with each bit being INIT.
+Each element is set to INIT.  See also the function `bit-vector'.
+*/
+(length, init))
+{
+CONCHECK_NATNUM (length);
+return make_bit_vector (XINT (length), init);
+}
+DEFUN ("bit-vector", Fbit_vector, 0, MANY, 0, /*
+Return a newly created bit vector with specified arguments as elements.
+Any number of arguments, even zero arguments, are allowed.
+*/
+(int nargs, Lisp_Object *args))
+{
+int i;
+Lisp_Bit_Vector *p = make_bit_vector_internal (nargs);
+for (i = 0; i < nargs; i++)
+{
+CHECK_BIT (args[i]);
+set_bit_vector_bit (p, i, !ZEROP (args[i]));
+}
+{
+Lisp_Object bit_vector;
+XSETBIT_VECTOR (bit_vector, p);
+return bit_vector;
+}
+}
+/************************************************************************/
+/*		     Compiled-function allocation			*/
+/************************************************************************/
+DECLARE_FIXED_TYPE_ALLOC (compiled_function, Lisp_Compiled_Function);
+#define MINIMUM_ALLOWED_FIXED_TYPE_CELLS_compiled_function 1000
+static Lisp_Object
+make_compiled_function (void)
+{
+Lisp_Compiled_Function *f;
+Lisp_Object fun;
+ALLOCATE_FIXED_TYPE (compiled_function, Lisp_Compiled_Function, f);
+set_lheader_implementation (&(f->lheader), &lrecord_compiled_function);
+f->stack_depth = 0;
+f->specpdl_depth = 0;
+f->flags.documentationp = 0;
+f->flags.interactivep = 0;
+f->flags.domainp = 0; /* I18N3 */
+f->instructions = Qzero;
+f->constants = Qzero;
+f->arglist = Qnil;
+f->doc_and_interactive = Qnil;
+#ifdef COMPILED_FUNCTION_ANNOTATION_HACK
+f->annotated = Qnil;
+#endif
+XSETCOMPILED_FUNCTION (fun, f);
+return fun;
+}
+DEFUN ("make-byte-code", Fmake_byte_code, 4, MANY, 0, /*
+Return a new compiled-function object.
+Usage: (arglist instructions constants stack-depth
+	&optional doc-string interactive)
+Note that, unlike all other emacs-lisp functions, calling this with five
+arguments is NOT the same as calling it with six arguments, the last of
+which is nil.  If the INTERACTIVE arg is specified as nil, then that means
+that this function was defined with `(interactive)'.  If the arg is not
+specified, then that means the function is not interactive.
+This is terrible behavior which is retained for compatibility with old
+`.elc' files which expect these semantics.
+*/
+(int nargs, Lisp_Object *args))
+{
+/* In a non-insane world this function would have this arglist...
+(arglist instructions constants stack_depth &optional doc_string interactive)
+*/
+Lisp_Object fun = make_compiled_function ();
+Lisp_Compiled_Function *f = XCOMPILED_FUNCTION (fun);
+Lisp_Object arglist      = args[0];
+Lisp_Object instructions = args[1];
+Lisp_Object constants    = args[2];
+Lisp_Object stack_depth  = args[3];
+Lisp_Object doc_string   = (nargs > 4) ? args[4] : Qnil;
+Lisp_Object interactive  = (nargs > 5) ? args[5] : Qunbound;
+if (nargs < 4 || nargs > 6)
+return Fsignal (Qwrong_number_of_arguments,
+		    list2 (intern ("make-byte-code"), make_int (nargs)));
+/* Check for valid formal parameter list now, to allow us to use
+SPECBIND_FAST_UNSAFE() later in funcall_compiled_function(). */
+{
+Lisp_Object symbol, tail;
+EXTERNAL_LIST_LOOP_3 (symbol, arglist, tail)
+{
+	CHECK_SYMBOL (symbol);
+	if (EQ (symbol, Qt)   ||
+	    EQ (symbol, Qnil) ||
+	    SYMBOL_IS_KEYWORD (symbol))
+	  signal_simple_error_2
+	    ("Invalid constant symbol in formal parameter list",
+	     symbol, arglist);
+}
+}
+f->arglist = arglist;
+/* `instructions' is a string or a cons (string . int) for a
+lazy-loaded function. */
+if (CONSP (instructions))
+{
+CHECK_STRING (XCAR (instructions));
+CHECK_INT (XCDR (instructions));
+}
+else
+{
+CHECK_STRING (instructions);
+}
+f->instructions = instructions;
+if (!NILP (constants))
+CHECK_VECTOR (constants);
+f->constants = constants;
+CHECK_NATNUM (stack_depth);
+f->stack_depth = XINT (stack_depth);
+#ifdef COMPILED_FUNCTION_ANNOTATION_HACK
+if (!NILP (Vcurrent_compiled_function_annotation))
+f->annotated = Fcopy (Vcurrent_compiled_function_annotation);
+else if (!NILP (Vload_file_name_internal_the_purecopy))
+f->annotated = Vload_file_name_internal_the_purecopy;
+else if (!NILP (Vload_file_name_internal))
+{
+struct gcpro gcpro1;
+GCPRO1 (fun);		/* don't let fun get reaped */
+Vload_file_name_internal_the_purecopy =
+	Ffile_name_nondirectory (Vload_file_name_internal);
+f->annotated = Vload_file_name_internal_the_purecopy;
+UNGCPRO;
+}
+#endif /* COMPILED_FUNCTION_ANNOTATION_HACK */
+/* doc_string may be nil, string, int, or a cons (string . int).
+interactive may be list or string (or unbound). */
+f->doc_and_interactive = Qunbound;
+#ifdef I18N3
+if ((f->flags.domainp = !NILP (Vfile_domain)) != 0)
+f->doc_and_interactive = Vfile_domain;
+#endif
+if ((f->flags.interactivep = !UNBOUNDP (interactive)) != 0)
+{
+f->doc_and_interactive
+	= (UNBOUNDP (f->doc_and_interactive) ? interactive :
+	   Fcons (interactive, f->doc_and_interactive));
+}
+if ((f->flags.documentationp = !NILP (doc_string)) != 0)
+{
+f->doc_and_interactive
+	= (UNBOUNDP (f->doc_and_interactive) ? doc_string :
+	   Fcons (doc_string, f->doc_and_interactive));
+}
+if (UNBOUNDP (f->doc_and_interactive))
+f->doc_and_interactive = Qnil;
+return fun;
+}
+/************************************************************************/
+/*			    Symbol allocation				*/
+/************************************************************************/
+DECLARE_FIXED_TYPE_ALLOC (symbol, struct Lisp_Symbol);
+#define MINIMUM_ALLOWED_FIXED_TYPE_CELLS_symbol 1000
+DEFUN ("make-symbol", Fmake_symbol, 1, 1, 0, /*
+Return a newly allocated uninterned symbol whose name is NAME.
+Its value and function definition are void, and its property list is nil.
+*/
+(name))
+{
+Lisp_Object val;
+struct Lisp_Symbol *p;
+CHECK_STRING (name);
+ALLOCATE_FIXED_TYPE (symbol, struct Lisp_Symbol, p);
+set_lheader_implementation (&(p->lheader), &lrecord_symbol);
+p->name     = XSTRING (name);
+p->plist    = Qnil;
+p->value    = Qunbound;
+p->function = Qunbound;
+symbol_next (p) = 0;
+XSETSYMBOL (val, p);
+return val;
+}
+/************************************************************************/
+/*			   Extent allocation				*/
+/************************************************************************/
+DECLARE_FIXED_TYPE_ALLOC (extent, struct extent);
+#define MINIMUM_ALLOWED_FIXED_TYPE_CELLS_extent 1000
+struct extent *
+allocate_extent (void)
+{
+struct extent *e;
+ALLOCATE_FIXED_TYPE (extent, struct extent, e);
+set_lheader_implementation (&(e->lheader), &lrecord_extent);
+extent_object (e) = Qnil;
+set_extent_start (e, -1);
+set_extent_end (e, -1);
+e->plist = Qnil;
+xzero (e->flags);
+extent_face (e) = Qnil;
+e->flags.end_open = 1;  /* default is for endpoints to behave like markers */
+e->flags.detachable = 1;
+return e;
+}
+/************************************************************************/
+/*			   Event allocation				*/
+/************************************************************************/
+DECLARE_FIXED_TYPE_ALLOC (event, struct Lisp_Event);
+#define MINIMUM_ALLOWED_FIXED_TYPE_CELLS_event 1000
+Lisp_Object
+allocate_event (void)
+{
+Lisp_Object val;
+struct Lisp_Event *e;
+ALLOCATE_FIXED_TYPE (event, struct Lisp_Event, e);
+set_lheader_implementation (&(e->lheader), &lrecord_event);
+XSETEVENT (val, e);
+return val;
+}
+/************************************************************************/
+/*			 Marker allocation				*/
+/************************************************************************/
+DECLARE_FIXED_TYPE_ALLOC (marker, struct Lisp_Marker);
+#define MINIMUM_ALLOWED_FIXED_TYPE_CELLS_marker 1000
+DEFUN ("make-marker", Fmake_marker, 0, 0, 0, /*
+Return a new marker which does not point at any place.
+*/
+())
+{
+Lisp_Object val;
+struct Lisp_Marker *p;
+ALLOCATE_FIXED_TYPE (marker, struct Lisp_Marker, p);
+set_lheader_implementation (&(p->lheader), &lrecord_marker);
+p->buffer = 0;
+p->memind = 0;
+marker_next (p) = 0;
+marker_prev (p) = 0;
+p->insertion_type = 0;
+XSETMARKER (val, p);
+return val;
+}
+Lisp_Object
+noseeum_make_marker (void)
+{
+Lisp_Object val;
+struct Lisp_Marker *p;
+NOSEEUM_ALLOCATE_FIXED_TYPE (marker, struct Lisp_Marker, p);
+set_lheader_implementation (&(p->lheader), &lrecord_marker);
+p->buffer = 0;
+p->memind = 0;
+marker_next (p) = 0;
+marker_prev (p) = 0;
+p->insertion_type = 0;
+XSETMARKER (val, p);
+return val;
+}
+/************************************************************************/
+/*			  String allocation				*/
+/************************************************************************/
+/* The data for "short" strings generally resides inside of structs of type
+string_chars_block. The Lisp_String structure is allocated just like any
+other Lisp object (except for vectors), and these are freelisted when
+they get garbage collected. The data for short strings get compacted,
+but the data for large strings do not.
+Previously Lisp_String structures were relocated, but this caused a lot
+of bus-errors because the C code didn't include enough GCPRO's for
+strings (since EVERY REFERENCE to a short string needed to be GCPRO'd so
+that the reference would get relocated).
+This new method makes things somewhat bigger, but it is MUCH safer.  */
+DECLARE_FIXED_TYPE_ALLOC (string, struct Lisp_String);
+/* strings are used and freed quite often */
+/* #define MINIMUM_ALLOWED_FIXED_TYPE_CELLS_string 10000 */
+#define MINIMUM_ALLOWED_FIXED_TYPE_CELLS_string 1000
+static Lisp_Object
+mark_string (Lisp_Object obj)
+{
+struct Lisp_String *ptr = XSTRING (obj);
+if (CONSP (ptr->plist) && EXTENT_INFOP (XCAR (ptr->plist)))
+flush_cached_extent_info (XCAR (ptr->plist));
+return ptr->plist;
+}
+static int
+string_equal (Lisp_Object obj1, Lisp_Object obj2, int depth)
+{
+Bytecount len;
+return (((len = XSTRING_LENGTH (obj1)) == XSTRING_LENGTH (obj2)) &&
+	  !memcmp (XSTRING_DATA (obj1), XSTRING_DATA (obj2), len));
+}
+static const struct lrecord_description string_description[] = {
+{ XD_BYTECOUNT,       offsetof(Lisp_String, size) },
+{ XD_OPAQUE_DATA_PTR, offsetof(Lisp_String, data), XD_INDIRECT(0, 1) },
+{ XD_LISP_OBJECT,     offsetof(Lisp_String, plist), 1 },
+{ XD_END }
+};
+DEFINE_BASIC_LRECORD_IMPLEMENTATION ("string", string,
+				     mark_string, print_string,
+				     /*
+				      * No `finalize', or `hash' methods.
+				      * internal_hash already knows how
+				      * to hash strings and finalization
+				      * is done with the
+				      * ADDITIONAL_FREE_string macro,
+				      * which is the standard way to do
+				      * finalization when using
+				      * SWEEP_FIXED_TYPE_BLOCK().
+				      */
+				     0, string_equal, 0,
+				     string_description,
+				     struct Lisp_String);
+/* String blocks contain this many useful bytes. */
+#define STRING_CHARS_BLOCK_SIZE					\
+((Bytecount) (8192 - MALLOC_OVERHEAD -				\
+	      ((2 * sizeof (struct string_chars_block *))	\
+	       + sizeof (EMACS_INT))))
+/* Block header for small strings. */
+struct string_chars_block
+{
+EMACS_INT pos;
+struct string_chars_block *next;
+struct string_chars_block *prev;
+/* Contents of string_chars_block->string_chars are interleaved
+string_chars structures (see below) and the actual string data */
+unsigned char string_chars[STRING_CHARS_BLOCK_SIZE];
+};
+static struct string_chars_block *first_string_chars_block;
+static struct string_chars_block *current_string_chars_block;
+/* If SIZE is the length of a string, this returns how many bytes
+*  the string occupies in string_chars_block->string_chars
+*  (including alignment padding).
+*/
+#define STRING_FULLSIZE(s) \
+ALIGN_SIZE (((s) + 1 + sizeof (struct Lisp_String *)),\
+ALIGNOF (struct Lisp_String *))
+#define BIG_STRING_FULLSIZE_P(fullsize) ((fullsize) >= STRING_CHARS_BLOCK_SIZE)
+#define BIG_STRING_SIZE_P(size) (BIG_STRING_FULLSIZE_P (STRING_FULLSIZE(size)))
+#define CHARS_TO_STRING_CHAR(x) \
+((struct string_chars *) \
+(((char *) (x)) - (slot_offset (struct string_chars, chars[0]))))
+struct string_chars
+{
+struct Lisp_String *string;
+unsigned char chars[1];
+};
+struct unused_string_chars
+{
+struct Lisp_String *string;
+EMACS_INT fullsize;
+};
+static void
+init_string_chars_alloc (void)
+{
+first_string_chars_block = xnew (struct string_chars_block);
+first_string_chars_block->prev = 0;
+first_string_chars_block->next = 0;
+first_string_chars_block->pos = 0;
+current_string_chars_block = first_string_chars_block;
+}
+static struct string_chars *
+allocate_string_chars_struct (struct Lisp_String *string_it_goes_with,
+			      EMACS_INT fullsize)
+{
+struct string_chars *s_chars;
+/* Allocate the string's actual data */
+if (BIG_STRING_FULLSIZE_P (fullsize))
+{
+s_chars = (struct string_chars *) xmalloc (fullsize);
+}
+else if (fullsize <=
+(countof (current_string_chars_block->string_chars)
+- current_string_chars_block->pos))
+{
+/* This string can fit in the current string chars block */
+s_chars = (struct string_chars *)
+	(current_string_chars_block->string_chars
+	 + current_string_chars_block->pos);
+current_string_chars_block->pos += fullsize;
+}
+else
+{
+/* Make a new current string chars block */
+struct string_chars_block *new_scb = xnew (struct string_chars_block);
+current_string_chars_block->next = new_scb;
+new_scb->prev = current_string_chars_block;
+new_scb->next = 0;
+current_string_chars_block = new_scb;
+new_scb->pos = fullsize;
+s_chars = (struct string_chars *)
+	current_string_chars_block->string_chars;
+}
+s_chars->string = string_it_goes_with;
+INCREMENT_CONS_COUNTER (fullsize, "string chars");
+return s_chars;
+}
+Lisp_Object
+make_uninit_string (Bytecount length)
+{
+struct Lisp_String *s;
+struct string_chars *s_chars;
+EMACS_INT fullsize = STRING_FULLSIZE (length);
+Lisp_Object val;
+if ((length < 0) || (fullsize <= 0))
+abort ();
+/* Allocate the string header */
+ALLOCATE_FIXED_TYPE (string, struct Lisp_String, s);
+set_lheader_implementation (&(s->lheader), &lrecord_string);
+s_chars = allocate_string_chars_struct (s, fullsize);
+set_string_data (s, &(s_chars->chars[0]));
+set_string_length (s, length);
+s->plist = Qnil;
+set_string_byte (s, length, 0);
+XSETSTRING (val, s);
+return val;
+}
+#ifdef VERIFY_STRING_CHARS_INTEGRITY
+static void verify_string_chars_integrity (void);
+#endif
+/* Resize the string S so that DELTA bytes can be inserted starting
+at POS.  If DELTA < 0, it means deletion starting at POS.  If
+POS < 0, resize the string but don't copy any characters.  Use
+this if you're planning on completely overwriting the string.
+*/
+void
+resize_string (struct Lisp_String *s, Bytecount pos, Bytecount delta)
+{
+#ifdef VERIFY_STRING_CHARS_INTEGRITY
+verify_string_chars_integrity ();
+#endif
+#ifdef ERROR_CHECK_BUFPOS
+if (pos >= 0)
+{
+assert (pos <= string_length (s));
+if (delta < 0)
+	assert (pos + (-delta) <= string_length (s));
+}
+else
+{
+if (delta < 0)
+	assert ((-delta) <= string_length (s));
+}
+#endif /* ERROR_CHECK_BUFPOS */
+if (pos >= 0 && delta < 0)
+/* If DELTA < 0, the functions below will delete the characters
+before POS.  We want to delete characters *after* POS, however,
+so convert this to the appropriate form. */
+pos += -delta;
+if (delta == 0)
+/* simplest case: no size change. */
+return;
+else
+{
+Bytecount oldfullsize = STRING_FULLSIZE (string_length (s));
+Bytecount newfullsize = STRING_FULLSIZE (string_length (s) + delta);
+if (oldfullsize == newfullsize)
+	{
+	  /* next simplest case; size change but the necessary
+	     allocation size won't change (up or down; code somewhere
+	     depends on there not being any unused allocation space,
+	     modulo any alignment constraints). */
+	  if (pos >= 0)
+	    {
+	      Bufbyte *addroff = pos + string_data (s);
+	      memmove (addroff + delta, addroff,
+		       /* +1 due to zero-termination. */
+		       string_length (s) + 1 - pos);
+	    }
+	}
+else if (BIG_STRING_FULLSIZE_P (oldfullsize) &&
+	       BIG_STRING_FULLSIZE_P (newfullsize))
+	{
+	  /* next simplest case; the string is big enough to be malloc()ed
+	     itself, so we just realloc.
+	     It's important not to let the string get below the threshold
+	     for making big strings and still remain malloc()ed; if that
+	     were the case, repeated calls to this function on the same
+	     string could result in memory leakage. */
+	  set_string_data (s, (Bufbyte *) xrealloc (string_data (s),
+						    newfullsize));
+	  if (pos >= 0)
+	    {
+	      Bufbyte *addroff = pos + string_data (s);
+	      memmove (addroff + delta, addroff,
+		       /* +1 due to zero-termination. */
+		       string_length (s) + 1 - pos);
+	    }
+	}
+else
+	{
+	  /* worst case.  We make a new string_chars struct and copy
+	     the string's data into it, inserting/deleting the delta
+	     in the process.  The old string data will either get
+	     freed by us (if it was malloc()ed) or will be reclaimed
+	     in the normal course of garbage collection. */
+	  struct string_chars *s_chars =
+	    allocate_string_chars_struct (s, newfullsize);
+	  Bufbyte *new_addr = &(s_chars->chars[0]);
+	  Bufbyte *old_addr = string_data (s);
+	  if (pos >= 0)
+	    {
+	      memcpy (new_addr, old_addr, pos);
+	      memcpy (new_addr + pos + delta, old_addr + pos,
+		      string_length (s) + 1 - pos);
+	    }
+	  set_string_data (s, new_addr);
+	  if (BIG_STRING_FULLSIZE_P (oldfullsize))
+	    xfree (old_addr);
+	  else
+	    {
+	      /* We need to mark this chunk of the string_chars_block
+		 as unused so that compact_string_chars() doesn't
+		 freak. */
+	      struct string_chars *old_s_chars =
+		(struct string_chars *) ((char *) old_addr -
+					 sizeof (struct Lisp_String *));
+	      /* Sanity check to make sure we aren't hosed by strange
+	         alignment/padding. */
+	      assert (old_s_chars->string == s);
+	      MARK_STRUCT_AS_FREE (old_s_chars);
+	      ((struct unused_string_chars *) old_s_chars)->fullsize =
+		oldfullsize;
+	    }
+	}
+set_string_length (s, string_length (s) + delta);
+/* If pos < 0, the string won't be zero-terminated.
+	 Terminate now just to make sure. */
+string_data (s)[string_length (s)] = '\0';
+if (pos >= 0)
+	{
+	  Lisp_Object string;
+	  XSETSTRING (string, s);
+	  /* We also have to adjust all of the extent indices after the
+	     place we did the change.  We say "pos - 1" because
+	     adjust_extents() is exclusive of the starting position
+	     passed to it. */
+	  adjust_extents (string, pos - 1, string_length (s),
+			  delta);
+	}
+}
+#ifdef VERIFY_STRING_CHARS_INTEGRITY
+verify_string_chars_integrity ();
+#endif
+}
+#ifdef MULE
+void
+set_string_char (struct Lisp_String *s, Charcount i, Emchar c)
+{
+Bufbyte newstr[MAX_EMCHAR_LEN];
+Bytecount bytoff = charcount_to_bytecount (string_data (s), i);
+Bytecount oldlen = charcount_to_bytecount (string_data (s) + bytoff, 1);
+Bytecount newlen = set_charptr_emchar (newstr, c);
+if (oldlen != newlen)
+resize_string (s, bytoff, newlen - oldlen);
+/* Remember, string_data (s) might have changed so we can't cache it. */
+memcpy (string_data (s) + bytoff, newstr, newlen);
+}
+#endif /* MULE */
+DEFUN ("make-string", Fmake_string, 2, 2, 0, /*
+Return a new string of length LENGTH, with each character being INIT.
+LENGTH must be an integer and INIT must be a character.
+*/
+(length, init))
+{
+CHECK_NATNUM (length);
+CHECK_CHAR_COERCE_INT (init);
+{
+Bufbyte init_str[MAX_EMCHAR_LEN];
+int len = set_charptr_emchar (init_str, XCHAR (init));
+Lisp_Object val = make_uninit_string (len * XINT (length));
+if (len == 1)
+/* Optimize the single-byte case */
+memset (XSTRING_DATA (val), XCHAR (init), XSTRING_LENGTH (val));
+else
+{
+	size_t i;
+	Bufbyte *ptr = XSTRING_DATA (val);
+	for (i = XINT (length); i; i--)
+	  {
+	    Bufbyte *init_ptr = init_str;
+	    switch (len)
+	      {
+	      case 4: *ptr++ = *init_ptr++;
+	      case 3: *ptr++ = *init_ptr++;
+	      case 2: *ptr++ = *init_ptr++;
+	      case 1: *ptr++ = *init_ptr++;
+	      }
+	  }
+}
+return val;
+}
+}
+DEFUN ("string", Fstring, 0, MANY, 0, /*
+Concatenate all the argument characters and make the result a string.
+*/
+(int nargs, Lisp_Object *args))
+{
+Bufbyte *storage = alloca_array (Bufbyte, nargs * MAX_EMCHAR_LEN);
+Bufbyte *p = storage;
+for (; nargs; nargs--, args++)
+{
+Lisp_Object lisp_char = *args;
+CHECK_CHAR_COERCE_INT (lisp_char);
+p += set_charptr_emchar (p, XCHAR (lisp_char));
+}
+return make_string (storage, p - storage);
+}
+/* Take some raw memory, which MUST already be in internal format,
+and package it up into a Lisp string. */
+Lisp_Object
+make_string (CONST Bufbyte *contents, Bytecount length)
+{
+Lisp_Object val;
+/* Make sure we find out about bad make_string's when they happen */
+#if defined (ERROR_CHECK_BUFPOS) && defined (MULE)
+bytecount_to_charcount (contents, length); /* Just for the assertions */
+#endif
+val = make_uninit_string (length);
+memcpy (XSTRING_DATA (val), contents, length);
+return val;
+}
+/* Take some raw memory, encoded in some external data format,
+and convert it into a Lisp string. */
+Lisp_Object
+make_ext_string (CONST Extbyte *contents, EMACS_INT length,
+		 enum external_data_format fmt)
+{
+Bufbyte *intstr;
+Bytecount intlen;
+GET_CHARPTR_INT_DATA_ALLOCA (contents, length, fmt, intstr, intlen);
+return make_string (intstr, intlen);
+}
+Lisp_Object
+build_string (CONST char *str)
+{
+/* Some strlen's crash and burn if passed null. */
+return make_string ((CONST Bufbyte *) str, (str ? strlen(str) : 0));
+}
+Lisp_Object
+build_ext_string (CONST char *str, enum external_data_format fmt)
+{
+/* Some strlen's crash and burn if passed null. */
+return make_ext_string ((CONST Extbyte *) str, (str ? strlen(str) : 0), fmt);
+}
+Lisp_Object
+build_translated_string (CONST char *str)
+{
+return build_string (GETTEXT (str));
+}
+Lisp_Object
+make_string_nocopy (CONST Bufbyte *contents, Bytecount length)
+{
+struct Lisp_String *s;
+Lisp_Object val;
+/* Make sure we find out about bad make_string_nocopy's when they happen */
+#if defined (ERROR_CHECK_BUFPOS) && defined (MULE)
+bytecount_to_charcount (contents, length); /* Just for the assertions */
+#endif
+/* Allocate the string header */
+ALLOCATE_FIXED_TYPE (string, struct Lisp_String, s);
+set_lheader_implementation (&(s->lheader), &lrecord_string);
+SET_C_READONLY_RECORD_HEADER (&s->lheader);
+s->plist = Qnil;
+set_string_data (s, (Bufbyte *)contents);
+set_string_length (s, length);
+XSETSTRING (val, s);
+return val;
+}
+/************************************************************************/
+/*                           lcrecord lists                             */
+/************************************************************************/
+/* Lcrecord lists are used to manage the allocation of particular
+sorts of lcrecords, to avoid calling alloc_lcrecord() (and thus
+malloc() and garbage-collection junk) as much as possible.
+It is similar to the Blocktype class.
+It works like this:
+1) Create an lcrecord-list object using make_lcrecord_list().
+This is often done at initialization.  Remember to staticpro_nodump
+this object!  The arguments to make_lcrecord_list() are the
+same as would be passed to alloc_lcrecord().
+2) Instead of calling alloc_lcrecord(), call allocate_managed_lcrecord()
+and pass the lcrecord-list earlier created.
+3) When done with the lcrecord, call free_managed_lcrecord().
+The standard freeing caveats apply: ** make sure there are no
+pointers to the object anywhere! **
+4) Calling free_managed_lcrecord() is just like kissing the
+lcrecord goodbye as if it were garbage-collected.  This means:
+-- the contents of the freed lcrecord are undefined, and the
+contents of something produced by allocate_managed_lcrecord()
+	 are undefined, just like for alloc_lcrecord().
+-- the mark method for the lcrecord's type will *NEVER* be called
+on freed lcrecords.
+-- the finalize method for the lcrecord's type will be called
+at the time that free_managed_lcrecord() is called.
+*/
+static Lisp_Object
+mark_lcrecord_list (Lisp_Object obj)
+{
+struct lcrecord_list *list = XLCRECORD_LIST (obj);
+Lisp_Object chain = list->free;
+while (!NILP (chain))
+{
+struct lrecord_header *lheader = XRECORD_LHEADER (chain);
+struct free_lcrecord_header *free_header =
+	(struct free_lcrecord_header *) lheader;
+#ifdef ERROR_CHECK_GC
+CONST struct lrecord_implementation *implementation
+	= LHEADER_IMPLEMENTATION(lheader);
+/* There should be no other pointers to the free list. */
+assert (!MARKED_RECORD_HEADER_P (lheader));
+/* Only lcrecords should be here. */
+assert (!implementation->basic_p);
+/* Only free lcrecords should be here. */
+assert (free_header->lcheader.free);
+/* The type of the lcrecord must be right. */
+assert (implementation == list->implementation);
+/* So must the size. */
+assert (implementation->static_size == 0
+	      || implementation->static_size == list->size);
+#endif /* ERROR_CHECK_GC */
+MARK_RECORD_HEADER (lheader);
+chain = free_header->chain;
+}
+return Qnil;
+}
+DEFINE_LRECORD_IMPLEMENTATION ("lcrecord-list", lcrecord_list,
+			       mark_lcrecord_list, internal_object_printer,
+			       0, 0, 0, 0, struct lcrecord_list);
+Lisp_Object
+make_lcrecord_list (size_t size,
+		    CONST struct lrecord_implementation *implementation)
+{
+struct lcrecord_list *p = alloc_lcrecord_type (struct lcrecord_list,
+						 &lrecord_lcrecord_list);
+Lisp_Object val;
+p->implementation = implementation;
+p->size = size;
+p->free = Qnil;
+XSETLCRECORD_LIST (val, p);
+return val;
+}
+Lisp_Object
+allocate_managed_lcrecord (Lisp_Object lcrecord_list)
+{
+struct lcrecord_list *list = XLCRECORD_LIST (lcrecord_list);
+if (!NILP (list->free))
+{
+Lisp_Object val = list->free;
+struct free_lcrecord_header *free_header =
+	(struct free_lcrecord_header *) XPNTR (val);
+#ifdef ERROR_CHECK_GC
+struct lrecord_header *lheader =
+	(struct lrecord_header *) free_header;
+CONST struct lrecord_implementation *implementation
+	= LHEADER_IMPLEMENTATION (lheader);
+/* There should be no other pointers to the free list. */
+assert (!MARKED_RECORD_HEADER_P (lheader));
+/* Only lcrecords should be here. */
+assert (!implementation->basic_p);
+/* Only free lcrecords should be here. */
+assert (free_header->lcheader.free);
+/* The type of the lcrecord must be right. */
+assert (implementation == list->implementation);
+/* So must the size. */
+assert (implementation->static_size == 0
+	      || implementation->static_size == list->size);
+#endif /* ERROR_CHECK_GC */
+list->free = free_header->chain;
+free_header->lcheader.free = 0;
+return val;
+}
+else
+{
+Lisp_Object val;
+XSETOBJ (val, Lisp_Type_Record,
+	       alloc_lcrecord (list->size, list->implementation));
+return val;
+}
+}
+void
+free_managed_lcrecord (Lisp_Object lcrecord_list, Lisp_Object lcrecord)
+{
+struct lcrecord_list *list = XLCRECORD_LIST (lcrecord_list);
+struct free_lcrecord_header *free_header =
+(struct free_lcrecord_header *) XPNTR (lcrecord);
+struct lrecord_header *lheader =
+(struct lrecord_header *) free_header;
+CONST struct lrecord_implementation *implementation
+= LHEADER_IMPLEMENTATION (lheader);
+#ifdef ERROR_CHECK_GC
+/* Make sure the size is correct.  This will catch, for example,
+putting a window configuration on the wrong free list. */
+if (implementation->size_in_bytes_method)
+assert (implementation->size_in_bytes_method (lheader) == list->size);
+else
+assert (implementation->static_size == list->size);
+#endif /* ERROR_CHECK_GC */
+if (implementation->finalizer)
+implementation->finalizer (lheader, 0);
+free_header->chain = list->free;
+free_header->lcheader.free = 1;
+list->free = lcrecord;
+}
+DEFUN ("purecopy", Fpurecopy, 1, 1, 0, /*
+Kept for compatibility, returns its argument.
+Old:
+Make a copy of OBJECT in pure storage.
+Recursively copies contents of vectors and cons cells.
+Does not copy symbols.
+*/
+(obj))
+{
+return obj;
+}
+/************************************************************************/
+/*			   Garbage Collection				*/
+/************************************************************************/
+/* This will be used more extensively In The Future */
+static int last_lrecord_type_index_assigned;
+CONST struct lrecord_implementation *lrecord_implementations_table[128];
+#define max_lrecord_type (countof (lrecord_implementations_table) - 1)
+struct gcpro *gcprolist;
+/* 415 used Mly 29-Jun-93 */
+/* 1327 used slb 28-Feb-98 */
+/* 1328 used og  03-Oct-99 (moving slowly, heh?) */
+#ifdef HAVE_SHLIB
+#define NSTATICS 4000
+#else
+#define NSTATICS 2000
+#endif
+/* Not "static" because of linker lossage on some systems */
+Lisp_Object *staticvec[NSTATICS]
+/* Force it into data space! */
+= {0};
+static int staticidx;
+/* Put an entry in staticvec, pointing at the variable whose address is given
+*/
+void
+staticpro (Lisp_Object *varaddress)
+{
+if (staticidx >= countof (staticvec))
+/* #### This is now a dubious abort() since this routine may be called */
+/* by Lisp attempting to load a DLL. */
+abort ();
+staticvec[staticidx++] = varaddress;
+}
+/* Not "static" because of linker lossage on some systems */
+Lisp_Object *staticvec_nodump[200]
+/* Force it into data space! */
+= {0};
+static int staticidx_nodump;
+/* Put an entry in staticvec_nodump, pointing at the variable whose address is given
+*/
+void
+staticpro_nodump (Lisp_Object *varaddress)
+{
+if (staticidx_nodump >= countof (staticvec_nodump))
+/* #### This is now a dubious abort() since this routine may be called */
+/* by Lisp attempting to load a DLL. */
+abort ();
+staticvec_nodump[staticidx_nodump++] = varaddress;
+}
+/* Not "static" because of linker lossage on some systems */
+struct {
+void *data;
+const struct struct_description *desc;
+} dumpstructvec[200];
+static int dumpstructidx;
+/* Put an entry in dumpstructvec, pointing at the variable whose address is given
+*/
+void
+dumpstruct (void *varaddress, const struct struct_description *desc)
+{
+if (dumpstructidx >= countof (dumpstructvec))
+abort ();
+dumpstructvec[dumpstructidx].data = varaddress;
+dumpstructvec[dumpstructidx].desc = desc;
+dumpstructidx++;
+}
+Lisp_Object *pdump_wirevec[50];
+static int pdump_wireidx;
+/* Put an entry in pdump_wirevec, pointing at the variable whose address is given
+*/
+void
+pdump_wire (Lisp_Object *varaddress)
+{
+if (pdump_wireidx >= countof (pdump_wirevec))
+abort ();
+pdump_wirevec[pdump_wireidx++] = varaddress;
+}
+Lisp_Object *pdump_wirevec_list[50];
+static int pdump_wireidx_list;
+/* Put an entry in pdump_wirevec_list, pointing at the variable whose address is given
+*/
+void
+pdump_wire_list (Lisp_Object *varaddress)
+{
+if (pdump_wireidx_list >= countof (pdump_wirevec_list))
+abort ();
+pdump_wirevec_list[pdump_wireidx_list++] = varaddress;
+}
+/* Mark reference to a Lisp_Object.  If the object referred to has not been
+seen yet, recursively mark all the references contained in it. */
+void
+mark_object (Lisp_Object obj)
+{
+tail_recurse:
+#ifdef ERROR_CHECK_GC
+assert (! (EQ (obj, Qnull_pointer)));
+#endif
+/* Checks we used to perform */
+/* if (EQ (obj, Qnull_pointer)) return; */
+/* if (!POINTER_TYPE_P (XGCTYPE (obj))) return; */
+/* if (PURIFIED (XPNTR (obj))) return; */
+if (XTYPE (obj) == Lisp_Type_Record)
+{
+struct lrecord_header *lheader = XRECORD_LHEADER (obj);
+#if defined (ERROR_CHECK_GC)
+assert (lheader->type <= last_lrecord_type_index_assigned);
+#endif
+if (C_READONLY_RECORD_HEADER_P (lheader))
+	return;
+if (! MARKED_RECORD_HEADER_P (lheader) &&
+	  ! UNMARKABLE_RECORD_HEADER_P (lheader))
+	{
+	  CONST struct lrecord_implementation *implementation =
+	    LHEADER_IMPLEMENTATION (lheader);
+	  MARK_RECORD_HEADER (lheader);
+#ifdef ERROR_CHECK_GC
+	  if (!implementation->basic_p)
+	    assert (! ((struct lcrecord_header *) lheader)->free);
+#endif
+	  if (implementation->marker)
+	    {
+	      obj = implementation->marker (obj);
+	      if (!NILP (obj)) goto tail_recurse;
+	    }
+	}
+}
+}
+/* mark all of the conses in a list and mark the final cdr; but
+DO NOT mark the cars.
+Use only for internal lists!  There should never be other pointers
+to the cons cells, because if so, the cars will remain unmarked
+even when they maybe should be marked. */
+void
+mark_conses_in_list (Lisp_Object obj)
+{
+Lisp_Object rest;
+for (rest = obj; CONSP (rest); rest = XCDR (rest))
+{
+if (CONS_MARKED_P (XCONS (rest)))
+	return;
+MARK_CONS (XCONS (rest));
+}
+mark_object (rest);
+}
+/* Find all structures not marked, and free them. */
+static int gc_count_num_bit_vector_used, gc_count_bit_vector_total_size;
+static int gc_count_bit_vector_storage;
+static int gc_count_num_short_string_in_use;
+static int gc_count_string_total_size;
+static int gc_count_short_string_total_size;
+/* static int gc_count_total_records_used, gc_count_records_total_size; */
+int
+lrecord_type_index (CONST struct lrecord_implementation *implementation)
+{
+int type_index = *(implementation->lrecord_type_index);
+/* Have to do this circuitous validation test because of problems
+dumping out initialized variables (ie can't set xxx_type_index to -1
+because that would make xxx_type_index read-only in a dumped emacs. */
+if (type_index < 0 || type_index > max_lrecord_type
+|| lrecord_implementations_table[type_index] != implementation)
+{
+assert (last_lrecord_type_index_assigned < max_lrecord_type);
+type_index = ++last_lrecord_type_index_assigned;
+lrecord_implementations_table[type_index] = implementation;
+*(implementation->lrecord_type_index) = type_index;
+}
+return type_index;
+}
+/* stats on lcrecords in use - kinda kludgy */
+static struct
+{
+int instances_in_use;
+int bytes_in_use;
+int instances_freed;
+int bytes_freed;
+int instances_on_free_list;
+} lcrecord_stats [countof (lrecord_implementations_table)];
+static void
+tick_lcrecord_stats (CONST struct lrecord_header *h, int free_p)
+{
+CONST struct lrecord_implementation *implementation =
+LHEADER_IMPLEMENTATION (h);
+int type_index = lrecord_type_index (implementation);
+if (((struct lcrecord_header *) h)->free)
+{
+assert (!free_p);
+lcrecord_stats[type_index].instances_on_free_list++;
+}
+else
+{
+size_t sz = (implementation->size_in_bytes_method
+		   ? implementation->size_in_bytes_method (h)
+		   : implementation->static_size);
+if (free_p)
+	{
+	  lcrecord_stats[type_index].instances_freed++;
+	  lcrecord_stats[type_index].bytes_freed += sz;
+	}
+else
+	{
+	  lcrecord_stats[type_index].instances_in_use++;
+	  lcrecord_stats[type_index].bytes_in_use += sz;
+	}
+}
+}
+/* Free all unmarked records */
+static void
+sweep_lcrecords_1 (struct lcrecord_header **prev, int *used)
+{
+struct lcrecord_header *header;
+int num_used = 0;
+/* int total_size = 0; */
+xzero (lcrecord_stats); /* Reset all statistics to 0. */
+/* First go through and call all the finalize methods.
+Then go through and free the objects.  There used to
+be only one loop here, with the call to the finalizer
+occurring directly before the xfree() below.  That
+is marginally faster but much less safe -- if the
+finalize method for an object needs to reference any
+other objects contained within it (and many do),
+we could easily be screwed by having already freed that
+other object. */
+for (header = *prev; header; header = header->next)
+{
+struct lrecord_header *h = &(header->lheader);
+if (!C_READONLY_RECORD_HEADER_P(h)
+	  && !MARKED_RECORD_HEADER_P (h)
+	  && ! (header->free))
+	{
+	  if (LHEADER_IMPLEMENTATION (h)->finalizer)
+	    LHEADER_IMPLEMENTATION (h)->finalizer (h, 0);
+	}
+}
+for (header = *prev; header; )
+{
+struct lrecord_header *h = &(header->lheader);
+if (C_READONLY_RECORD_HEADER_P(h) || MARKED_RECORD_HEADER_P (h))
+	{
+	  if (MARKED_RECORD_HEADER_P (h))
+	    UNMARK_RECORD_HEADER (h);
+	  num_used++;
+	  /* total_size += n->implementation->size_in_bytes (h);*/
+	  /* ### May modify header->next on a C_READONLY lcrecord */
+	  prev = &(header->next);
+	  header = *prev;
+	  tick_lcrecord_stats (h, 0);
+	}
+else
+	{
+	  struct lcrecord_header *next = header->next;
+*prev = next;
+	  tick_lcrecord_stats (h, 1);
+	  /* used to call finalizer right here. */
+	  xfree (header);
+	  header = next;
+	}
+}
+*used = num_used;
+/* *total = total_size; */
+}
+static void
+sweep_bit_vectors_1 (Lisp_Object *prev,
+		     int *used, int *total, int *storage)
+{
+Lisp_Object bit_vector;
+int num_used = 0;
+int total_size = 0;
+int total_storage = 0;
+/* BIT_VECTORP fails because the objects are marked, which changes
+their implementation */
+for (bit_vector = *prev; !EQ (bit_vector, Qzero); )
+{
+Lisp_Bit_Vector *v = XBIT_VECTOR (bit_vector);
+int len = v->size;
+if (C_READONLY_RECORD_HEADER_P(&(v->lheader)) || MARKED_RECORD_P (bit_vector))
+	{
+	  if (MARKED_RECORD_P (bit_vector))
+	    UNMARK_RECORD_HEADER (&(v->lheader));
+	  total_size += len;
+total_storage +=
+	    MALLOC_OVERHEAD +
+	    STRETCHY_STRUCT_SIZEOF (Lisp_Bit_Vector, bits,
+				    BIT_VECTOR_LONG_STORAGE (len));
+	  num_used++;
+	  /* ### May modify next on a C_READONLY bitvector */
+	  prev = &(bit_vector_next (v));
+	  bit_vector = *prev;
+	}
+else
+	{
+Lisp_Object next = bit_vector_next (v);
+*prev = next;
+	  xfree (v);
+	  bit_vector = next;
+	}
+}
+*used = num_used;
+*total = total_size;
+*storage = total_storage;
+}
+/* And the Lord said: Thou shalt use the `c-backslash-region' command
+to make macros prettier. */
+#ifdef ERROR_CHECK_GC
+#define SWEEP_FIXED_TYPE_BLOCK(typename, obj_type)			\
+do {									\
+struct typename##_block *SFTB_current;				\
+struct typename##_block **SFTB_prev;					\
+int SFTB_limit;							\
+int num_free = 0, num_used = 0;					\
+									\
+for (SFTB_prev = &current_##typename##_block,				\
+SFTB_current = current_##typename##_block,			\
+SFTB_limit = current_##typename##_block_index;			\
+SFTB_current;							\
+)								\
+{									\
+int SFTB_iii;							\
+									\
+for (SFTB_iii = 0; SFTB_iii < SFTB_limit; SFTB_iii++)		\
+	{								\
+	  obj_type *SFTB_victim = &(SFTB_current->block[SFTB_iii]);	\
+									\
+	  if (FREE_STRUCT_P (SFTB_victim))				\
+	    {								\
+	      num_free++;						\
+	    }								\
+	  else if (C_READONLY_RECORD_HEADER_P (&SFTB_victim->lheader))	\
+	    {								\
+	      num_used++;						\
+	    }								\
+	  else if (!MARKED_RECORD_HEADER_P (&SFTB_victim->lheader))	\
+	    {								\
+	      num_free++;						\
+	      FREE_FIXED_TYPE (typename, obj_type, SFTB_victim);	\
+	    }								\
+	  else								\
+	    {								\
+	      num_used++;						\
+	      UNMARK_##typename (SFTB_victim);				\
+	    }								\
+	}								\
+SFTB_prev = &(SFTB_current->prev);				\
+SFTB_current = SFTB_current->prev;				\
+SFTB_limit = countof (current_##typename##_block->block);		\
+}									\
+									\
+gc_count_num_##typename##_in_use = num_used;				\
+gc_count_num_##typename##_freelist = num_free;			\
+} while (0)
+#else /* !ERROR_CHECK_GC */
+#define SWEEP_FIXED_TYPE_BLOCK(typename, obj_type)				\
+do {										\
+struct typename##_block *SFTB_current;					\
+struct typename##_block **SFTB_prev;						\
+int SFTB_limit;								\
+int num_free = 0, num_used = 0;						\
+										\
+typename##_free_list = 0;							\
+										\
+for (SFTB_prev = &current_##typename##_block,					\
+SFTB_current = current_##typename##_block,				\
+SFTB_limit = current_##typename##_block_index;				\
+SFTB_current;								\
+)									\
+{										\
+int SFTB_iii;								\
+int SFTB_empty = 1;							\
+obj_type *SFTB_old_free_list = typename##_free_list;			\
+										\
+for (SFTB_iii = 0; SFTB_iii < SFTB_limit; SFTB_iii++)			\
+	{									\
+	  obj_type *SFTB_victim = &(SFTB_current->block[SFTB_iii]);		\
+										\
+	  if (FREE_STRUCT_P (SFTB_victim))					\
+	    {									\
+	      num_free++;							\
+	      PUT_FIXED_TYPE_ON_FREE_LIST (typename, obj_type, SFTB_victim);	\
+	    }									\
+	  else if (C_READONLY_RECORD_HEADER_P (&SFTB_victim->lheader))		\
+	    {									\
+	      SFTB_empty = 0;							\
+	      num_used++;							\
+	    }									\
+	  else if (!MARKED_RECORD_HEADER_P (&SFTB_victim->lheader))		\
+	    {									\
+	      num_free++;							\
+	      FREE_FIXED_TYPE (typename, obj_type, SFTB_victim);		\
+	    }									\
+	  else									\
+	    {									\
+	      SFTB_empty = 0;							\
+	      num_used++;							\
+	      UNMARK_##typename (SFTB_victim);					\
+	    }									\
+	}									\
+if (!SFTB_empty)								\
+	{									\
+	  SFTB_prev = &(SFTB_current->prev);					\
+	  SFTB_current = SFTB_current->prev;					\
+	}									\
+else if (SFTB_current == current_##typename##_block			\
+	       && !SFTB_current->prev)						\
+	{									\
+	  /* No real point in freeing sole allocation block */			\
+	  break;								\
+	}									\
+else									\
+	{									\
+	  struct typename##_block *SFTB_victim_block = SFTB_current;		\
+	  if (SFTB_victim_block == current_##typename##_block)			\
+	    current_##typename##_block_index					\
+	      = countof (current_##typename##_block->block);			\
+	  SFTB_current = SFTB_current->prev;					\
+	  {									\
+	    *SFTB_prev = SFTB_current;						\
+	    xfree (SFTB_victim_block);						\
+	    /* Restore free list to what it was before victim was swept */	\
+	    typename##_free_list = SFTB_old_free_list;				\
+	    num_free -= SFTB_limit;						\
+	  }									\
+	}									\
+SFTB_limit = countof (current_##typename##_block->block);			\
+}										\
+										\
+gc_count_num_##typename##_in_use = num_used;					\
+gc_count_num_##typename##_freelist = num_free;				\
+} while (0)
+#endif /* !ERROR_CHECK_GC */
+static void
+sweep_conses (void)
+{
+#define UNMARK_cons(ptr) UNMARK_RECORD_HEADER (&((ptr)->lheader))
+#define ADDITIONAL_FREE_cons(ptr)
+SWEEP_FIXED_TYPE_BLOCK (cons, struct Lisp_Cons);
+}
+/* Explicitly free a cons cell.  */
+void
+free_cons (struct Lisp_Cons *ptr)
+{
+#ifdef ERROR_CHECK_GC
+/* If the CAR is not an int, then it will be a pointer, which will
+always be four-byte aligned.  If this cons cell has already been
+placed on the free list, however, its car will probably contain
+a chain pointer to the next cons on the list, which has cleverly
+had all its 0's and 1's inverted.  This allows for a quick
+check to make sure we're not freeing something already freed. */
+if (POINTER_TYPE_P (XTYPE (ptr->car)))
+ASSERT_VALID_POINTER (XPNTR (ptr->car));
+#endif /* ERROR_CHECK_GC */
+#ifndef ALLOC_NO_POOLS
+FREE_FIXED_TYPE_WHEN_NOT_IN_GC (cons, struct Lisp_Cons, ptr);
+#endif /* ALLOC_NO_POOLS */
+}
+/* explicitly free a list.  You **must make sure** that you have
+created all the cons cells that make up this list and that there
+are no pointers to any of these cons cells anywhere else.  If there
+are, you will lose. */
+void
+free_list (Lisp_Object list)
+{
+Lisp_Object rest, next;
+for (rest = list; !NILP (rest); rest = next)
+{
+next = XCDR (rest);
+free_cons (XCONS (rest));
+}
+}
+/* explicitly free an alist.  You **must make sure** that you have
+created all the cons cells that make up this alist and that there
+are no pointers to any of these cons cells anywhere else.  If there
+are, you will lose. */
+void
+free_alist (Lisp_Object alist)
+{
+Lisp_Object rest, next;
+for (rest = alist; !NILP (rest); rest = next)
+{
+next = XCDR (rest);
+free_cons (XCONS (XCAR (rest)));
+free_cons (XCONS (rest));
+}
+}
+static void
+sweep_compiled_functions (void)
+{
+#define UNMARK_compiled_function(ptr) UNMARK_RECORD_HEADER (&((ptr)->lheader))
+#define ADDITIONAL_FREE_compiled_function(ptr)
+SWEEP_FIXED_TYPE_BLOCK (compiled_function, Lisp_Compiled_Function);
+}
+#ifdef LISP_FLOAT_TYPE
+static void
+sweep_floats (void)
+{
+#define UNMARK_float(ptr) UNMARK_RECORD_HEADER (&((ptr)->lheader))
+#define ADDITIONAL_FREE_float(ptr)
+SWEEP_FIXED_TYPE_BLOCK (float, struct Lisp_Float);
+}
+#endif /* LISP_FLOAT_TYPE */
+static void
+sweep_symbols (void)
+{
+#define UNMARK_symbol(ptr) UNMARK_RECORD_HEADER (&((ptr)->lheader))
+#define ADDITIONAL_FREE_symbol(ptr)
+SWEEP_FIXED_TYPE_BLOCK (symbol, struct Lisp_Symbol);
+}
+static void
+sweep_extents (void)
+{
+#define UNMARK_extent(ptr) UNMARK_RECORD_HEADER (&((ptr)->lheader))
+#define ADDITIONAL_FREE_extent(ptr)
+SWEEP_FIXED_TYPE_BLOCK (extent, struct extent);
+}
+static void
+sweep_events (void)
+{
+#define UNMARK_event(ptr) UNMARK_RECORD_HEADER (&((ptr)->lheader))
+#define ADDITIONAL_FREE_event(ptr)
+SWEEP_FIXED_TYPE_BLOCK (event, struct Lisp_Event);
+}
+static void
+sweep_markers (void)
+{
+#define UNMARK_marker(ptr) UNMARK_RECORD_HEADER (&((ptr)->lheader))
+#define ADDITIONAL_FREE_marker(ptr)					\
+do { Lisp_Object tem;							\
+XSETMARKER (tem, ptr);						\
+unchain_marker (tem);						\
+} while (0)
+SWEEP_FIXED_TYPE_BLOCK (marker, struct Lisp_Marker);
+}
+/* Explicitly free a marker.  */
+void
+free_marker (struct Lisp_Marker *ptr)
+{
+#ifdef ERROR_CHECK_GC
+/* Perhaps this will catch freeing an already-freed marker. */
+Lisp_Object temmy;
+XSETMARKER (temmy, ptr);
+assert (MARKERP (temmy));
+#endif /* ERROR_CHECK_GC */
+#ifndef ALLOC_NO_POOLS
+FREE_FIXED_TYPE_WHEN_NOT_IN_GC (marker, struct Lisp_Marker, ptr);
+#endif /* ALLOC_NO_POOLS */
+}
+#if defined (MULE) && defined (VERIFY_STRING_CHARS_INTEGRITY)
+static void
+verify_string_chars_integrity (void)
+{
+struct string_chars_block *sb;
+/* Scan each existing string block sequentially, string by string.  */
+for (sb = first_string_chars_block; sb; sb = sb->next)
+{
+int pos = 0;
+/* POS is the index of the next string in the block.  */
+while (pos < sb->pos)
+{
+struct string_chars *s_chars =
+(struct string_chars *) &(sb->string_chars[pos]);
+struct Lisp_String *string;
+	  int size;
+	  int fullsize;
+	  /* If the string_chars struct is marked as free (i.e. the STRING
+	     pointer is 0xFFFFFFFF) then this is an unused chunk of string
+storage. (See below.) */
+	  if (FREE_STRUCT_P (s_chars))
+	    {
+	      fullsize = ((struct unused_string_chars *) s_chars)->fullsize;
+	      pos += fullsize;
+	      continue;
+}
+string = s_chars->string;
+	  /* Must be 32-bit aligned. */
+	  assert ((((int) string) & 3) == 0);
+size = string_length (string);
+fullsize = STRING_FULLSIZE (size);
+assert (!BIG_STRING_FULLSIZE_P (fullsize));
+	  assert (string_data (string) == s_chars->chars);
+	  pos += fullsize;
+}
+assert (pos == sb->pos);
+}
+}
+#endif /* MULE && ERROR_CHECK_GC */
+/* Compactify string chars, relocating the reference to each --
+free any empty string_chars_block we see. */
+static void
+compact_string_chars (void)
+{
+struct string_chars_block *to_sb = first_string_chars_block;
+int to_pos = 0;
+struct string_chars_block *from_sb;
+/* Scan each existing string block sequentially, string by string.  */
+for (from_sb = first_string_chars_block; from_sb; from_sb = from_sb->next)
+{
+int from_pos = 0;
+/* FROM_POS is the index of the next string in the block.  */
+while (from_pos < from_sb->pos)
+{
+struct string_chars *from_s_chars =
+(struct string_chars *) &(from_sb->string_chars[from_pos]);
+struct string_chars *to_s_chars;
+struct Lisp_String *string;
+	  int size;
+	  int fullsize;
+	  /* If the string_chars struct is marked as free (i.e. the STRING
+	     pointer is 0xFFFFFFFF) then this is an unused chunk of string
+storage.  This happens under Mule when a string's size changes
+	     in such a way that its fullsize changes. (Strings can change
+	     size because a different-length character can be substituted
+	     for another character.) In this case, after the bogus string
+	     pointer is the "fullsize" of this entry, i.e. how many bytes
+	     to skip. */
+	  if (FREE_STRUCT_P (from_s_chars))
+	    {
+	      fullsize = ((struct unused_string_chars *) from_s_chars)->fullsize;
+	      from_pos += fullsize;
+	      continue;
+}
+string = from_s_chars->string;
+	  assert (!(FREE_STRUCT_P (string)));
+size = string_length (string);
+fullsize = STRING_FULLSIZE (size);
+if (BIG_STRING_FULLSIZE_P (fullsize))
+abort ();
+/* Just skip it if it isn't marked.  */
+	  if (! MARKED_RECORD_HEADER_P (&(string->lheader)))
+{
+from_pos += fullsize;
+continue;
+}
+/* If it won't fit in what's left of TO_SB, close TO_SB out
+and go on to the next string_chars_block.  We know that TO_SB
+cannot advance past FROM_SB here since FROM_SB is large enough
+to currently contain this string. */
+if ((to_pos + fullsize) > countof (to_sb->string_chars))
+{
+to_sb->pos = to_pos;
+to_sb = to_sb->next;
+to_pos = 0;
+}
+/* Compute new address of this string
+and update TO_POS for the space being used.  */
+to_s_chars = (struct string_chars *) &(to_sb->string_chars[to_pos]);
+/* Copy the string_chars to the new place.  */
+if (from_s_chars != to_s_chars)
+memmove (to_s_chars, from_s_chars, fullsize);
+/* Relocate FROM_S_CHARS's reference */
+set_string_data (string, &(to_s_chars->chars[0]));
+from_pos += fullsize;
+to_pos += fullsize;
+}
+}
+/* Set current to the last string chars block still used and
+free any that follow. */
+{
+struct string_chars_block *victim;
+for (victim = to_sb->next; victim; )
+{
+	struct string_chars_block *next = victim->next;
+	xfree (victim);
+	victim = next;
+}
+current_string_chars_block = to_sb;
+current_string_chars_block->pos = to_pos;
+current_string_chars_block->next = 0;
+}
+}
+#if 1 /* Hack to debug missing purecopy's */
+static int debug_string_purity;
+static void
+debug_string_purity_print (struct Lisp_String *p)
+{
+Charcount i;
+Charcount s = string_char_length (p);
+putc ('\"', stderr);
+for (i = 0; i < s; i++)
+{
+Emchar ch = string_char (p, i);
+if (ch < 32 || ch >= 126)
+stderr_out ("\\%03o", ch);
+else if (ch == '\\' || ch == '\"')
+stderr_out ("\\%c", ch);
+else
+stderr_out ("%c", ch);
+}
+stderr_out ("\"\n");
+}
+#endif /* 1 */
+static void
+sweep_strings (void)
+{
+int num_small_used = 0, num_small_bytes = 0, num_bytes = 0;
+int debug = debug_string_purity;
+#define UNMARK_string(ptr)				\
+do { struct Lisp_String *p = (ptr);			\
+int size = string_length (p);			\
+UNMARK_RECORD_HEADER (&(p->lheader));		\
+num_bytes += size;				\
+if (!BIG_STRING_SIZE_P (size))			\
+	 { num_small_bytes += size;			\
+	   num_small_used++;				\
+	 }						\
+if (debug) debug_string_purity_print (p);	\
+} while (0)
+#define ADDITIONAL_FREE_string(p)				\
+do { int size = string_length (p);				\
+if (BIG_STRING_SIZE_P (size))				\
+	 xfree_1 (CHARS_TO_STRING_CHAR (string_data (p)));	\
+} while (0)
+SWEEP_FIXED_TYPE_BLOCK (string, struct Lisp_String);
+gc_count_num_short_string_in_use = num_small_used;
+gc_count_string_total_size = num_bytes;
+gc_count_short_string_total_size = num_small_bytes;
+}
+/* I hate duplicating all this crap! */
+int
+marked_p (Lisp_Object obj)
+{
+#ifdef ERROR_CHECK_GC
+assert (! (EQ (obj, Qnull_pointer)));
+#endif
+/* Checks we used to perform. */
+/* if (EQ (obj, Qnull_pointer)) return 1; */
+/* if (!POINTER_TYPE_P (XGCTYPE (obj))) return 1; */
+/* if (PURIFIED (XPNTR (obj))) return 1; */
+if (XTYPE (obj) == Lisp_Type_Record)
+{
+struct lrecord_header *lheader = XRECORD_LHEADER (obj);
+#if defined (ERROR_CHECK_GC)
+assert (lheader->type <= last_lrecord_type_index_assigned);
+#endif
+return C_READONLY_RECORD_HEADER_P (lheader) || MARKED_RECORD_HEADER_P (lheader);
+}
+return 1;
+}
+static void
+gc_sweep (void)
+{
+/* Free all unmarked records.  Do this at the very beginning,
+before anything else, so that the finalize methods can safely
+examine items in the objects.  sweep_lcrecords_1() makes
+sure to call all the finalize methods *before* freeing anything,
+to complete the safety. */
+{
+int ignored;
+sweep_lcrecords_1 (&all_lcrecords, &ignored);
+}
+compact_string_chars ();
+/* Finalize methods below (called through the ADDITIONAL_FREE_foo
+macros) must be *extremely* careful to make sure they're not
+referencing freed objects.  The only two existing finalize
+methods (for strings and markers) pass muster -- the string
+finalizer doesn't look at anything but its own specially-
+created block, and the marker finalizer only looks at live
+buffers (which will never be freed) and at the markers before
+and after it in the chain (which, by induction, will never be
+freed because if so, they would have already removed themselves
+from the chain). */
+/* Put all unmarked strings on free list, free'ing the string chars
+of large unmarked strings */
+sweep_strings ();
+/* Put all unmarked conses on free list */
+sweep_conses ();
+/* Free all unmarked bit vectors */
+sweep_bit_vectors_1 (&all_bit_vectors,
+		       &gc_count_num_bit_vector_used,
+		       &gc_count_bit_vector_total_size,
+		       &gc_count_bit_vector_storage);
+/* Free all unmarked compiled-function objects */
+sweep_compiled_functions ();
+#ifdef LISP_FLOAT_TYPE
+/* Put all unmarked floats on free list */
+sweep_floats ();
+#endif
+/* Put all unmarked symbols on free list */
+sweep_symbols ();
+/* Put all unmarked extents on free list */
+sweep_extents ();
+/* Put all unmarked markers on free list.
+Dechain each one first from the buffer into which it points. */
+sweep_markers ();
+sweep_events ();
+#ifdef PDUMP
+/* Unmark all dumped objects */
+{
+int i;
+char *p = pdump_rt_list;
+if(p)
+for(;;)
+	{
+	  pdump_reloc_table *rt = (pdump_reloc_table *)p;
+	  p += sizeof (pdump_reloc_table);
+	  if (rt->desc) {
+	    for (i=0; i<rt->count; i++)
+	      {
+		UNMARK_RECORD_HEADER ((struct lrecord_header *)(*(EMACS_INT *)p));
+		p += sizeof (EMACS_INT);
+	      }
+	  } else
+	    break;
+	}
+}
+#endif
+}
+/* Clearing for disksave. */
+void
+disksave_object_finalization (void)
+{
+/* It's important that certain information from the environment not get
+dumped with the executable (pathnames, environment variables, etc.).
+To make it easier to tell when this has happened with strings(1) we
+clear some known-to-be-garbage blocks of memory, so that leftover
+results of old evaluation don't look like potential problems.
+But first we set some notable variables to nil and do one more GC,
+to turn those strings into garbage.
+*/
+/* Yeah, this list is pretty ad-hoc... */
+Vprocess_environment = Qnil;
+Vexec_directory = Qnil;
+Vdata_directory = Qnil;
+Vsite_directory = Qnil;
+Vdoc_directory = Qnil;
+Vconfigure_info_directory = Qnil;
+Vexec_path = Qnil;
+Vload_path = Qnil;
+/* Vdump_load_path = Qnil; */
+/* Release hash tables for locate_file */
+Flocate_file_clear_hashing (Qt);
+uncache_home_directory();
+#if defined(LOADHIST) && !(defined(LOADHIST_DUMPED) || \
+			   defined(LOADHIST_BUILTIN))
+Vload_history = Qnil;
+#endif
+Vshell_file_name = Qnil;
+garbage_collect_1 ();
+/* Run the disksave finalization methods of all live objects. */
+disksave_object_finalization_1 ();
+/* Zero out the uninitialized (really, unused) part of the containers
+for the live strings. */
+{
+struct string_chars_block *scb;
+for (scb = first_string_chars_block; scb; scb = scb->next)
+{
+	int count = sizeof (scb->string_chars) - scb->pos;
+	assert (count >= 0 && count < STRING_CHARS_BLOCK_SIZE);
+	if (count != 0) {
+	  /* from the block's fill ptr to the end */
+	  memset ((scb->string_chars + scb->pos), 0, count);
+	}
+}
+}
+/* There, that ought to be enough... */
+}
+Lisp_Object
+restore_gc_inhibit (Lisp_Object val)
+{
+gc_currently_forbidden = XINT (val);
+return val;
+}
+/* Maybe we want to use this when doing a "panic" gc after memory_full()? */
+static int gc_hooks_inhibited;
+void
+garbage_collect_1 (void)
+{
+#if MAX_SAVE_STACK > 0
+char stack_top_variable;
+extern char *stack_bottom;
+#endif
+struct frame *f;
+int speccount;
+int cursor_changed;
+Lisp_Object pre_gc_cursor;
+struct gcpro gcpro1;
+if (gc_in_progress
+|| gc_currently_forbidden
+|| in_display
+|| preparing_for_armageddon)
+return;
+/* We used to call selected_frame() here.
+The following functions cannot be called inside GC
+so we move to after the above tests. */
+{
+Lisp_Object frame;
+Lisp_Object device = Fselected_device (Qnil);
+if (NILP (device)) /* Could happen during startup, eg. if always_gc */
+return;
+frame = DEVICE_SELECTED_FRAME (XDEVICE (device));
+if (NILP (frame))
+signal_simple_error ("No frames exist on device", device);
+f = XFRAME (frame);
+}
+pre_gc_cursor = Qnil;
+cursor_changed = 0;
+GCPRO1 (pre_gc_cursor);
+/* Very important to prevent GC during any of the following
+stuff that might run Lisp code; otherwise, we'll likely
+have infinite GC recursion. */
+speccount = specpdl_depth ();
+record_unwind_protect (restore_gc_inhibit,
+make_int (gc_currently_forbidden));
+gc_currently_forbidden = 1;
+if (!gc_hooks_inhibited)
+run_hook_trapping_errors ("Error in pre-gc-hook", Qpre_gc_hook);
+/* Now show the GC cursor/message. */
+if (!noninteractive)
+{
+if (FRAME_WIN_P (f))
+	{
+	  Lisp_Object frame = make_frame (f);
+	  Lisp_Object cursor = glyph_image_instance (Vgc_pointer_glyph,
+						     FRAME_SELECTED_WINDOW (f),
+						     ERROR_ME_NOT, 1);
+	  pre_gc_cursor = f->pointer;
+	  if (POINTER_IMAGE_INSTANCEP (cursor)
+	      /* don't change if we don't know how to change back. */
+	      && POINTER_IMAGE_INSTANCEP (pre_gc_cursor))
+	    {
+	      cursor_changed = 1;
+	      Fset_frame_pointer (frame, cursor);
+	    }
+	}
+/* Don't print messages to the stream device. */
+if (!cursor_changed && !FRAME_STREAM_P (f))
+	{
+	  char *msg = (STRINGP (Vgc_message)
+		       ? GETTEXT ((char *) XSTRING_DATA (Vgc_message))
+		       : 0);
+	  Lisp_Object args[2], whole_msg;
+	  args[0] = build_string (msg ? msg :
+				  GETTEXT ((CONST char *) gc_default_message));
+	  args[1] = build_string ("...");
+	  whole_msg = Fconcat (2, args);
+	  echo_area_message (f, (Bufbyte *) 0, whole_msg, 0, -1,
+			     Qgarbage_collecting);
+	}
+}
+/***** Now we actually start the garbage collection. */
+gc_in_progress = 1;
+gc_generation_number[0]++;
+#if MAX_SAVE_STACK > 0
+/* Save a copy of the contents of the stack, for debugging.  */
+if (!purify_flag)
+{
+/* Static buffer in which we save a copy of the C stack at each GC.  */
+static char *stack_copy;
+static size_t stack_copy_size;
+ptrdiff_t stack_diff = &stack_top_variable - stack_bottom;
+size_t stack_size = (stack_diff > 0 ? stack_diff : -stack_diff);
+if (stack_size < MAX_SAVE_STACK)
+	{
+	  if (stack_copy_size < stack_size)
+	    {
+	      stack_copy = (char *) xrealloc (stack_copy, stack_size);
+	      stack_copy_size = stack_size;
+	    }
+	  memcpy (stack_copy,
+		  stack_diff > 0 ? stack_bottom : &stack_top_variable,
+		  stack_size);
+	}
+}
+#endif /* MAX_SAVE_STACK > 0 */
+/* Do some totally ad-hoc resource clearing. */
+/* #### generalize this? */
+clear_event_resource ();
+cleanup_specifiers ();
+/* Mark all the special slots that serve as the roots of accessibility. */
+{ /* staticpro() */
+int i;
+for (i = 0; i < staticidx; i++)
+mark_object (*(staticvec[i]));
+for (i = 0; i < staticidx_nodump; i++)
+mark_object (*(staticvec_nodump[i]));
+}
+{ /* GCPRO() */
+struct gcpro *tail;
+int i;
+for (tail = gcprolist; tail; tail = tail->next)
+for (i = 0; i < tail->nvars; i++)
+	mark_object (tail->var[i]);
+}
+{ /* specbind() */
+struct specbinding *bind;
+for (bind = specpdl; bind != specpdl_ptr; bind++)
+{
+	mark_object (bind->symbol);
+	mark_object (bind->old_value);
+}
+}
+{
+struct catchtag *catch;
+for (catch = catchlist; catch; catch = catch->next)
+{
+	mark_object (catch->tag);
+	mark_object (catch->val);
+}
+}
+{
+struct backtrace *backlist;
+for (backlist = backtrace_list; backlist; backlist = backlist->next)
+{
+	int nargs = backlist->nargs;
+	int i;
+	mark_object (*backlist->function);
+	if (nargs == UNEVALLED || nargs == MANY)
+	  mark_object (backlist->args[0]);
+	else
+	  for (i = 0; i < nargs; i++)
+	    mark_object (backlist->args[i]);
+}
+}
+mark_redisplay ();
+mark_profiling_info ();
+/* OK, now do the after-mark stuff.  This is for things that
+are only marked when something else is marked (e.g. weak hash tables).
+There may be complex dependencies between such objects -- e.g.
+a weak hash table might be unmarked, but after processing a later
+weak hash table, the former one might get marked.  So we have to
+iterate until nothing more gets marked. */
+while (finish_marking_weak_hash_tables () > 0 ||
+	 finish_marking_weak_lists       () > 0)
+;
+/* And prune (this needs to be called after everything else has been
+marked and before we do any sweeping). */
+/* #### this is somewhat ad-hoc and should probably be an object
+method */
+prune_weak_hash_tables ();
+prune_weak_lists ();
+prune_specifiers ();
+prune_syntax_tables ();
+gc_sweep ();
+consing_since_gc = 0;
+#ifndef DEBUG_XEMACS
+/* Allow you to set it really fucking low if you really want ... */
+if (gc_cons_threshold < 10000)
+gc_cons_threshold = 10000;
+#endif
+gc_in_progress = 0;
+/******* End of garbage collection ********/
+run_hook_trapping_errors ("Error in post-gc-hook", Qpost_gc_hook);
+/* Now remove the GC cursor/message */
+if (!noninteractive)
+{
+if (cursor_changed)
+	Fset_frame_pointer (make_frame (f), pre_gc_cursor);
+else if (!FRAME_STREAM_P (f))
+	{
+	  char *msg = (STRINGP (Vgc_message)
+		       ? GETTEXT ((char *) XSTRING_DATA (Vgc_message))
+		       : 0);
+	  /* Show "...done" only if the echo area would otherwise be empty. */
+	  if (NILP (clear_echo_area (selected_frame (),
+				     Qgarbage_collecting, 0)))
+	    {
+	      Lisp_Object args[2], whole_msg;
+	      args[0] = build_string (msg ? msg :
+				      GETTEXT ((CONST char *)
+					       gc_default_message));
+	      args[1] = build_string ("... done");
+	      whole_msg = Fconcat (2, args);
+	      echo_area_message (selected_frame (), (Bufbyte *) 0,
+				 whole_msg, 0, -1,
+				 Qgarbage_collecting);
+	    }
+	}
+}
+/* now stop inhibiting GC */
+unbind_to (speccount, Qnil);
+if (!breathing_space)
+{
+breathing_space = malloc (4096 - MALLOC_OVERHEAD);
+}
+UNGCPRO;
+return;
+}
+/* Debugging aids.  */
+static Lisp_Object
+gc_plist_hack (CONST char *name, int value, Lisp_Object tail)
+{
+/* C doesn't have local functions (or closures, or GC, or readable syntax,
+or portable numeric datatypes, or bit-vectors, or characters, or
+arrays, or exceptions, or ...) */
+return cons3 (intern (name), make_int (value), tail);
+}
+#define HACK_O_MATIC(type, name, pl) do {				\
+int s = 0;								\
+struct type##_block *x = current_##type##_block;			\
+while (x) { s += sizeof (*x) + MALLOC_OVERHEAD; x = x->prev; }	\
+(pl) = gc_plist_hack ((name), s, (pl));				\
+} while (0)
+DEFUN ("garbage-collect", Fgarbage_collect, 0, 0, "", /*
+Reclaim storage for Lisp objects no longer needed.
+Return info on amount of space in use:
+((USED-CONSES . FREE-CONSES) (USED-SYMS . FREE-SYMS)
+(USED-MARKERS . FREE-MARKERS) USED-STRING-CHARS USED-VECTOR-SLOTS
+PLIST)
+where `PLIST' is a list of alternating keyword/value pairs providing
+more detailed information.
+Garbage collection happens automatically if you cons more than
+`gc-cons-threshold' bytes of Lisp data since previous garbage collection.
+*/
+())
+{
+Lisp_Object pl = Qnil;
+int i;
+int gc_count_vector_total_size = 0;
+garbage_collect_1 ();
+for (i = 0; i <= last_lrecord_type_index_assigned; i++)
+{
+if (lcrecord_stats[i].bytes_in_use != 0
+|| lcrecord_stats[i].bytes_freed != 0
+	  || lcrecord_stats[i].instances_on_free_list != 0)
+{
+char buf [255];
+CONST char *name = lrecord_implementations_table[i]->name;
+	  int len = strlen (name);
+	  /* save this for the FSFmacs-compatible part of the summary */
+	  if (i == *lrecord_vector.lrecord_type_index)
+	    gc_count_vector_total_size =
+	      lcrecord_stats[i].bytes_in_use + lcrecord_stats[i].bytes_freed;
+sprintf (buf, "%s-storage", name);
+pl = gc_plist_hack (buf, lcrecord_stats[i].bytes_in_use, pl);
+	  /* Okay, simple pluralization check for `symbol-value-varalias' */
+	  if (name[len-1] == 's')
+	    sprintf (buf, "%ses-freed", name);
+	  else
+	    sprintf (buf, "%ss-freed", name);
+if (lcrecord_stats[i].instances_freed != 0)
+pl = gc_plist_hack (buf, lcrecord_stats[i].instances_freed, pl);
+	  if (name[len-1] == 's')
+	    sprintf (buf, "%ses-on-free-list", name);
+	  else
+	    sprintf (buf, "%ss-on-free-list", name);
+if (lcrecord_stats[i].instances_on_free_list != 0)
+pl = gc_plist_hack (buf, lcrecord_stats[i].instances_on_free_list,
+				pl);
+	  if (name[len-1] == 's')
+	    sprintf (buf, "%ses-used", name);
+	  else
+	    sprintf (buf, "%ss-used", name);
+pl = gc_plist_hack (buf, lcrecord_stats[i].instances_in_use, pl);
+}
+}
+HACK_O_MATIC (extent, "extent-storage", pl);
+pl = gc_plist_hack ("extents-free", gc_count_num_extent_freelist, pl);
+pl = gc_plist_hack ("extents-used", gc_count_num_extent_in_use, pl);
+HACK_O_MATIC (event, "event-storage", pl);
+pl = gc_plist_hack ("events-free", gc_count_num_event_freelist, pl);
+pl = gc_plist_hack ("events-used", gc_count_num_event_in_use, pl);
+HACK_O_MATIC (marker, "marker-storage", pl);
+pl = gc_plist_hack ("markers-free", gc_count_num_marker_freelist, pl);
+pl = gc_plist_hack ("markers-used", gc_count_num_marker_in_use, pl);
+#ifdef LISP_FLOAT_TYPE
+HACK_O_MATIC (float, "float-storage", pl);
+pl = gc_plist_hack ("floats-free", gc_count_num_float_freelist, pl);
+pl = gc_plist_hack ("floats-used", gc_count_num_float_in_use, pl);
+#endif /* LISP_FLOAT_TYPE */
+HACK_O_MATIC (string, "string-header-storage", pl);
+pl = gc_plist_hack ("long-strings-total-length",
+gc_count_string_total_size
+		      - gc_count_short_string_total_size, pl);
+HACK_O_MATIC (string_chars, "short-string-storage", pl);
+pl = gc_plist_hack ("short-strings-total-length",
+gc_count_short_string_total_size, pl);
+pl = gc_plist_hack ("strings-free", gc_count_num_string_freelist, pl);
+pl = gc_plist_hack ("long-strings-used",
+gc_count_num_string_in_use
+		      - gc_count_num_short_string_in_use, pl);
+pl = gc_plist_hack ("short-strings-used",
+gc_count_num_short_string_in_use, pl);
+HACK_O_MATIC (compiled_function, "compiled-function-storage", pl);
+pl = gc_plist_hack ("compiled-functions-free",
+		      gc_count_num_compiled_function_freelist, pl);
+pl = gc_plist_hack ("compiled-functions-used",
+		      gc_count_num_compiled_function_in_use, pl);
+pl = gc_plist_hack ("bit-vector-storage", gc_count_bit_vector_storage, pl);
+pl = gc_plist_hack ("bit-vectors-total-length",
+gc_count_bit_vector_total_size, pl);
+pl = gc_plist_hack ("bit-vectors-used", gc_count_num_bit_vector_used, pl);
+HACK_O_MATIC (symbol, "symbol-storage", pl);
+pl = gc_plist_hack ("symbols-free", gc_count_num_symbol_freelist, pl);
+pl = gc_plist_hack ("symbols-used", gc_count_num_symbol_in_use, pl);
+HACK_O_MATIC (cons, "cons-storage", pl);
+pl = gc_plist_hack ("conses-free", gc_count_num_cons_freelist, pl);
+pl = gc_plist_hack ("conses-used", gc_count_num_cons_in_use, pl);
+/* The things we do for backwards-compatibility */
+return
+list6 (Fcons (make_int (gc_count_num_cons_in_use),
+		  make_int (gc_count_num_cons_freelist)),
+	   Fcons (make_int (gc_count_num_symbol_in_use),
+		  make_int (gc_count_num_symbol_freelist)),
+	   Fcons (make_int (gc_count_num_marker_in_use),
+		  make_int (gc_count_num_marker_freelist)),
+	   make_int (gc_count_string_total_size),
+	   make_int (gc_count_vector_total_size),
+	   pl);
+}
+#undef HACK_O_MATIC
+DEFUN ("consing-since-gc", Fconsing_since_gc, 0, 0, "", /*
+Return the number of bytes consed since the last garbage collection.
+\"Consed\" is a misnomer in that this actually counts allocation
+of all different kinds of objects, not just conses.
+If this value exceeds `gc-cons-threshold', a garbage collection happens.
+*/
+())
+{
+return make_int (consing_since_gc);
+}
+DEFUN ("memory-limit", Fmemory_limit, 0, 0, "", /*
+Return the address of the last byte Emacs has allocated, divided by 1024.
+This may be helpful in debugging Emacs's memory usage.
+The value is divided by 1024 to make sure it will fit in a lisp integer.
+*/
+())
+{
+return make_int ((EMACS_INT) sbrk (0) / 1024);
+}
+int
+object_dead_p (Lisp_Object obj)
+{
+return ((BUFFERP  (obj) && !BUFFER_LIVE_P  (XBUFFER  (obj))) ||
+	  (FRAMEP   (obj) && !FRAME_LIVE_P   (XFRAME   (obj))) ||
+	  (WINDOWP  (obj) && !WINDOW_LIVE_P  (XWINDOW  (obj))) ||
+	  (DEVICEP  (obj) && !DEVICE_LIVE_P  (XDEVICE  (obj))) ||
+	  (CONSOLEP (obj) && !CONSOLE_LIVE_P (XCONSOLE (obj))) ||
+	  (EVENTP   (obj) && !EVENT_LIVE_P   (XEVENT   (obj))) ||
+	  (EXTENTP  (obj) && !EXTENT_LIVE_P  (XEXTENT  (obj))));
+}
+#ifdef MEMORY_USAGE_STATS
+/* Attempt to determine the actual amount of space that is used for
+the block allocated starting at PTR, supposedly of size "CLAIMED_SIZE".
+It seems that the following holds:
+1. When using the old allocator (malloc.c):
+-- blocks are always allocated in chunks of powers of two.  For
+	 each block, there is an overhead of 8 bytes if rcheck is not
+	 defined, 20 bytes if it is defined.  In other words, a
+	 one-byte allocation needs 8 bytes of overhead for a total of
+	 9 bytes, and needs to have 16 bytes of memory chunked out for
+	 it.
+2. When using the new allocator (gmalloc.c):
+-- blocks are always allocated in chunks of powers of two up
+to 4096 bytes.  Larger blocks are allocated in chunks of
+	 an integral multiple of 4096 bytes.  The minimum block
+size is 2*sizeof (void *), or 16 bytes if SUNOS_LOCALTIME_BUG
+	 is defined.  There is no per-block overhead, but there
+	 is an overhead of 3*sizeof (size_t) for each 4096 bytes
+	 allocated.
+3. When using the system malloc, anything goes, but they are
+generally slower and more space-efficient than the GNU
+allocators.  One possibly reasonable assumption to make
+for want of better data is that sizeof (void *), or maybe
+2 * sizeof (void *), is required as overhead and that
+blocks are allocated in the minimum required size except
+that some minimum block size is imposed (e.g. 16 bytes). */
+size_t
+malloced_storage_size (void *ptr, size_t claimed_size,
+		       struct overhead_stats *stats)
+{
+size_t orig_claimed_size = claimed_size;
+#ifdef GNU_MALLOC
+if (claimed_size < 2 * sizeof (void *))
+claimed_size = 2 * sizeof (void *);
+# ifdef SUNOS_LOCALTIME_BUG
+if (claimed_size < 16)
+claimed_size = 16;
+# endif
+if (claimed_size < 4096)
+{
+int log = 1;
+/* compute the log base two, more or less, then use it to compute
+	 the block size needed. */
+claimed_size--;
+/* It's big, it's heavy, it's wood! */
+while ((claimed_size /= 2) != 0)
+	++log;
+claimed_size = 1;
+/* It's better than bad, it's good! */
+while (log > 0)
+{
+	  claimed_size *= 2;
+log--;
+}
+/* We have to come up with some average about the amount of
+	 blocks used. */
+if ((size_t) (rand () & 4095) < claimed_size)
+	claimed_size += 3 * sizeof (void *);
+}
+else
+{
+claimed_size += 4095;
+claimed_size &= ~4095;
+claimed_size += (claimed_size / 4096) * 3 * sizeof (size_t);
+}
+#elif defined (SYSTEM_MALLOC)
+if (claimed_size < 16)
+claimed_size = 16;
+claimed_size += 2 * sizeof (void *);
+#else /* old GNU allocator */
+# ifdef rcheck /* #### may not be defined here */
+claimed_size += 20;
+# else
+claimed_size += 8;
+# endif
+{
+int log = 1;
+/* compute the log base two, more or less, then use it to compute
+the block size needed. */
+claimed_size--;
+/* It's big, it's heavy, it's wood! */
+while ((claimed_size /= 2) != 0)
+++log;
+claimed_size = 1;
+/* It's better than bad, it's good! */
+while (log > 0)
+{
+	claimed_size *= 2;
+log--;
+}
+}
+#endif /* old GNU allocator */
+if (stats)
+{
+stats->was_requested += orig_claimed_size;
+stats->malloc_overhead += claimed_size - orig_claimed_size;
+}
+return claimed_size;
+}
+size_t
+fixed_type_block_overhead (size_t size)
+{
+size_t per_block = TYPE_ALLOC_SIZE (cons, unsigned char);
+size_t overhead = 0;
+size_t storage_size = malloced_storage_size (0, per_block, 0);
+while (size >= per_block)
+{
+size -= per_block;
+overhead += sizeof (void *) + per_block - storage_size;
+}
+if (rand () % per_block < size)
+overhead += sizeof (void *) + per_block - storage_size;
+return overhead;
+}
+#endif /* MEMORY_USAGE_STATS */
+/* Initialization */
+void
+reinit_alloc_once_early (void)
+{
+gc_generation_number[0] = 0;
+breathing_space = 0;
+XSETINT (all_bit_vectors, 0); /* Qzero may not be set yet. */
+XSETINT (Vgc_message, 0);
+all_lcrecords = 0;
+ignore_malloc_warnings = 1;
+#ifdef DOUG_LEA_MALLOC
+mallopt (M_TRIM_THRESHOLD, 128*1024); /* trim threshold */
+mallopt (M_MMAP_THRESHOLD, 64*1024); /* mmap threshold */
+#if 0 /* Moved to emacs.c */
+mallopt (M_MMAP_MAX, 64); /* max. number of mmap'ed areas */
+#endif
+#endif
+init_string_alloc ();
+init_string_chars_alloc ();
+init_cons_alloc ();
+init_symbol_alloc ();
+init_compiled_function_alloc ();
+#ifdef LISP_FLOAT_TYPE
+init_float_alloc ();
+#endif /* LISP_FLOAT_TYPE */
+init_marker_alloc ();
+init_extent_alloc ();
+init_event_alloc ();
+ignore_malloc_warnings = 0;
+staticidx_nodump = 0;
+dumpstructidx = 0;
+pdump_wireidx = 0;
+consing_since_gc = 0;
+#if 1
+gc_cons_threshold = 500000; /* XEmacs change */
+#else
+gc_cons_threshold = 15000; /* debugging */
+#endif
+#ifdef VIRT_ADDR_VARIES
+malloc_sbrk_unused = 1<<22;	/* A large number */
+malloc_sbrk_used = 100000;	/* as reasonable as any number */
+#endif /* VIRT_ADDR_VARIES */
+lrecord_uid_counter = 259;
+debug_string_purity = 0;
+gcprolist = 0;
+gc_currently_forbidden = 0;
+gc_hooks_inhibited = 0;
+#ifdef ERROR_CHECK_TYPECHECK
+ERROR_ME.really_unlikely_name_to_have_accidentally_in_a_non_errb_structure =
+666;
+ERROR_ME_NOT.
+really_unlikely_name_to_have_accidentally_in_a_non_errb_structure = 42;
+ERROR_ME_WARN.
+really_unlikely_name_to_have_accidentally_in_a_non_errb_structure =
+3333632;
+#endif /* ERROR_CHECK_TYPECHECK */
+}
+void
+init_alloc_once_early (void)
+{
+int iii;
+reinit_alloc_once_early ();
+last_lrecord_type_index_assigned = -1;
+for (iii = 0; iii < countof (lrecord_implementations_table); iii++)
+{
+lrecord_implementations_table[iii] = 0;
+}
+/*
+* All the staticly
+* defined subr lrecords were initialized with lheader->type == 0.
+* See subr_lheader_initializer in lisp.h.  Force type index 0 to be
+* assigned to lrecord_subr so that those predefined indexes match
+* reality.
+*/
+lrecord_type_index (&lrecord_subr);
+assert (*(lrecord_subr.lrecord_type_index) == 0);
+/*
+* The same is true for symbol_value_forward objects, except the
+* type is 1.
+*/
+lrecord_type_index (&lrecord_symbol_value_forward);
+assert (*(lrecord_symbol_value_forward.lrecord_type_index) == 1);
+staticidx = 0;
+}
+int pure_bytes_used = 0;
+void
+reinit_alloc (void)
+{
+gcprolist = 0;
+}
+void
+syms_of_alloc (void)
+{
+defsymbol (&Qpre_gc_hook, "pre-gc-hook");
+defsymbol (&Qpost_gc_hook, "post-gc-hook");
+defsymbol (&Qgarbage_collecting, "garbage-collecting");
+DEFSUBR (Fcons);
+DEFSUBR (Flist);
+DEFSUBR (Fvector);
+DEFSUBR (Fbit_vector);
+DEFSUBR (Fmake_byte_code);
+DEFSUBR (Fmake_list);
+DEFSUBR (Fmake_vector);
+DEFSUBR (Fmake_bit_vector);
+DEFSUBR (Fmake_string);
+DEFSUBR (Fstring);
+DEFSUBR (Fmake_symbol);
+DEFSUBR (Fmake_marker);
+DEFSUBR (Fpurecopy);
+DEFSUBR (Fgarbage_collect);
+DEFSUBR (Fmemory_limit);
+DEFSUBR (Fconsing_since_gc);
+}
+void
+vars_of_alloc (void)
+{
+DEFVAR_INT ("gc-cons-threshold", &gc_cons_threshold /*
+*Number of bytes of consing between garbage collections.
+\"Consing\" is a misnomer in that this actually counts allocation
+of all different kinds of objects, not just conses.
+Garbage collection can happen automatically once this many bytes have been
+allocated since the last garbage collection.  All data types count.
+Garbage collection happens automatically when `eval' or `funcall' are
+called.  (Note that `funcall' is called implicitly as part of evaluation.)
+By binding this temporarily to a large number, you can effectively
+prevent garbage collection during a part of the program.
+See also `consing-since-gc'.
+*/ );
+DEFVAR_INT ("pure-bytes-used", &pure_bytes_used /*
+Number of bytes of sharable Lisp data allocated so far.
+*/ );
+#if 0
+DEFVAR_INT ("data-bytes-used", &malloc_sbrk_used /*
+Number of bytes of unshared memory allocated in this session.
+*/ );
+DEFVAR_INT ("data-bytes-free", &malloc_sbrk_unused /*
+Number of bytes of unshared memory remaining available in this session.
+*/ );
+#endif
+#ifdef DEBUG_XEMACS
+DEFVAR_INT ("debug-allocation", &debug_allocation /*
+If non-zero, print out information to stderr about all objects allocated.
+See also `debug-allocation-backtrace-length'.
+*/ );
+debug_allocation = 0;
+DEFVAR_INT ("debug-allocation-backtrace-length",
+	      &debug_allocation_backtrace_length /*
+Length (in stack frames) of short backtrace printed out by `debug-allocation'.
+*/ );
+debug_allocation_backtrace_length = 2;
+#endif
+DEFVAR_BOOL ("purify-flag", &purify_flag /*
+Non-nil means loading Lisp code in order to dump an executable.
+This means that certain objects should be allocated in readonly space.
+*/ );
+DEFVAR_LISP ("pre-gc-hook", &Vpre_gc_hook /*
+Function or functions to be run just before each garbage collection.
+Interrupts, garbage collection, and errors are inhibited while this hook
+runs, so be extremely careful in what you add here.  In particular, avoid
+consing, and do not interact with the user.
+*/ );
+Vpre_gc_hook = Qnil;
+DEFVAR_LISP ("post-gc-hook", &Vpost_gc_hook /*
+Function or functions to be run just after each garbage collection.
+Interrupts, garbage collection, and errors are inhibited while this hook
+runs, so be extremely careful in what you add here.  In particular, avoid
+consing, and do not interact with the user.
+*/ );
+Vpost_gc_hook = Qnil;
+DEFVAR_LISP ("gc-message", &Vgc_message /*
+String to print to indicate that a garbage collection is in progress.
+This is printed in the echo area.  If the selected frame is on a
+window system and `gc-pointer-glyph' specifies a value (i.e. a pointer
+image instance) in the domain of the selected frame, the mouse pointer
+will change instead of this message being printed.
+*/ );
+Vgc_message = build_string (gc_default_message);
+DEFVAR_LISP ("gc-pointer-glyph", &Vgc_pointer_glyph /*
+Pointer glyph used to indicate that a garbage collection is in progress.
+If the selected window is on a window system and this glyph specifies a
+value (i.e. a pointer image instance) in the domain of the selected
+window, the pointer will be changed as specified during garbage collection.
+Otherwise, a message will be printed in the echo area, as controlled
+by `gc-message'.
+*/ );
+}
+void
+complex_vars_of_alloc (void)
+{
+Vgc_pointer_glyph = Fmake_glyph_internal (Qpointer);
+}
+#ifdef PDUMP
+/* The structure of the file
+*
+* 0			- header
+* 256			- dumped objects
+* stab_offset		- nb_staticpro*(Lisp_Object *) from staticvec
+*			- nb_staticpro*(relocated Lisp_Object) pointed to by staticpro
+*			- nb_structdmp*pair(void *, adr) for pointers to structures
+*			- lrecord_implementations_table[]
+*			- relocation table
+*                      - wired variable address/value couples with the count preceding the list
+*/
+typedef struct
+{
+char signature[8];
+EMACS_UINT stab_offset;
+EMACS_UINT reloc_address;
+int nb_staticpro;
+int nb_structdmp;
+int last_type;
+} dump_header;
+char *pdump_start, *pdump_end;
+static const unsigned char align_table[256] =
+{
+8, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0,
+4, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0,
+5, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0,
+4, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0,
+6, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0,
+4, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0,
+5, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0,
+4, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0,
+7, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0,
+4, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0,
+5, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0,
+4, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0,
+6, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0,
+4, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0,
+5, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0,
+4, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0
+};
+typedef struct pdump_entry_list_elmt
+{
+struct pdump_entry_list_elmt *next;
+const void *obj;
+size_t size;
+int count;
+int is_lrecord;
+EMACS_INT save_offset;
+} pdump_entry_list_elmt;
+typedef struct
+{
+pdump_entry_list_elmt *first;
+int align;
+int count;
+} pdump_entry_list;
+typedef struct pdump_struct_list_elmt
+{
+pdump_entry_list list;
+const struct struct_description *sdesc;
+} pdump_struct_list_elmt;
+typedef struct
+{
+pdump_struct_list_elmt *list;
+int count;
+int size;
+} pdump_struct_list;
+static pdump_entry_list pdump_object_table[256];
+static pdump_entry_list pdump_opaque_data_list;
+static pdump_struct_list pdump_struct_table;
+static pdump_entry_list_elmt *pdump_qnil;
+static int pdump_alert_undump_object[256];
+static unsigned long cur_offset;
+static size_t max_size;
+static int pdump_fd;
+static void *pdump_buf;
+#define PDUMP_HASHSIZE 200001
+static pdump_entry_list_elmt **pdump_hash;
+/* Since most pointers are eight bytes aligned, the >>3 allows for a better hash */
+static int
+pdump_make_hash (const void *obj)
+{
+return ((unsigned long)(obj)>>3) % PDUMP_HASHSIZE;
+}
+static pdump_entry_list_elmt *
+pdump_get_entry (const void *obj)
+{
+int pos = pdump_make_hash(obj);
+pdump_entry_list_elmt *e;
+while ((e = pdump_hash[pos]) != 0)
+{
+if (e->obj == obj)
+	return e;
+pos++;
+if (pos == PDUMP_HASHSIZE)
+	pos = 0;
+}
+return 0;
+}
+static void
+pdump_add_entry (pdump_entry_list *list, const void *obj, size_t size, int count, int is_lrecord)
+{
+pdump_entry_list_elmt *e;
+int align;
+int pos = pdump_make_hash (obj);
+while ((e = pdump_hash[pos]) != 0)
+{
+if (e->obj == obj)
+	return;
+pos++;
+if (pos == PDUMP_HASHSIZE)
+	pos = 0;
+}
+e = malloc (sizeof (pdump_entry_list_elmt));
+e->next = list->first;
+e->obj = obj;
+e->size = size;
+e->count = count;
+e->is_lrecord = is_lrecord;
+list->first = e;
+list->count += count;
+pdump_hash[pos] = e;
+align = align_table[size & 255];
+if (align<2 && is_lrecord)
+align = 2;
+if(align < list->align)
+list->align = align;
+}
+static pdump_entry_list *
+pdump_get_entry_list(const struct struct_description *sdesc)
+{
+int i;
+for(i=0; i<pdump_struct_table.count; i++)
+if (pdump_struct_table.list[i].sdesc == sdesc)
+return &pdump_struct_table.list[i].list;
+if (pdump_struct_table.size <= pdump_struct_table.count)
+{
+if (pdump_struct_table.size == -1)
+	pdump_struct_table.size = 10;
+else
+	pdump_struct_table.size = pdump_struct_table.size * 2;
+pdump_struct_table.list = xrealloc (pdump_struct_table.list,
+					  pdump_struct_table.size*sizeof (pdump_struct_list_elmt));
+}
+pdump_struct_table.list[pdump_struct_table.count].list.first = 0;
+pdump_struct_table.list[pdump_struct_table.count].list.align = 8;
+pdump_struct_table.list[pdump_struct_table.count].list.count = 0;
+pdump_struct_table.list[pdump_struct_table.count].sdesc = sdesc;
+return &pdump_struct_table.list[pdump_struct_table.count++].list;
+}
+static struct {
+Lisp_Object obj;
+int position;
+int offset;
+} backtrace[65536];
+static int depth;
+static void pdump_backtrace (void)
+{
+int i;
+fprintf (stderr, "pdump backtrace :\n");
+for (i=0;i<depth;i++)
+{
+if (!backtrace[i].obj)
+	fprintf (stderr, "  - ind. (%d, %d)\n", backtrace[i].position, backtrace[i].offset);
+else
+	{
+	  fprintf (stderr, "  - %s (%d, %d)\n",
+		   XRECORD_LHEADER_IMPLEMENTATION (backtrace[i].obj)->name,
+		   backtrace[i].position,
+		   backtrace[i].offset);
+	}
+}
+}
+static void pdump_register_object (Lisp_Object obj);
+static void pdump_register_struct (const void *data, const struct struct_description *sdesc, int count);
+static EMACS_INT
+pdump_get_indirect_count (EMACS_INT code, const struct lrecord_description *idesc, const void *idata)
+{
+EMACS_INT count;
+const void *irdata;
+int line = XD_INDIRECT_VAL (code);
+int delta = XD_INDIRECT_DELTA (code);
+irdata = ((char *)idata) + idesc[line].offset;
+switch (idesc[line].type) {
+case XD_SIZE_T:
+count = *(size_t *)irdata;
+break;
+case XD_INT:
+count = *(int *)irdata;
+break;
+case XD_LONG:
+count = *(long *)irdata;
+break;
+case XD_BYTECOUNT:
+count = *(Bytecount *)irdata;
+break;
+default:
+fprintf (stderr, "Unsupported count type : %d (line = %d, code=%ld)\n", idesc[line].type, line, (long)code);
+pdump_backtrace ();
+abort ();
+}
+count += delta;
+return count;
+}
+static void
+pdump_register_sub (const void *data, const struct lrecord_description *desc, int me)
+{
+int pos;
+const void *rdata;
+restart:
+for (pos = 0; desc[pos].type != XD_END; pos++)
+{
+backtrace[me].position = pos;
+backtrace[me].offset = desc[pos].offset;
+rdata = ((const char *)data) + desc[pos].offset;
+switch(desc[pos].type)
+	{
+	case XD_SPECIFIER_END:
+	  pos = 0;
+	  desc = ((const struct Lisp_Specifier *)data)->methods->extra_description;
+	  goto restart;
+	case XD_SIZE_T:
+	case XD_INT:
+	case XD_LONG:
+	case XD_BYTECOUNT:
+	case XD_LO_RESET_NIL:
+	case XD_INT_RESET:
+	case XD_LO_LINK:
+	  break;
+	case XD_OPAQUE_DATA_PTR:
+	  {
+	    EMACS_INT count = desc[pos].data1;
+	    if (XD_IS_INDIRECT(count))
+	      count = pdump_get_indirect_count (count, desc, data);
+	    pdump_add_entry (&pdump_opaque_data_list,
+			     *(void **)rdata,
+			     count,
+			     1,
+			     0);
+	    break;
+	  }
+	case XD_C_STRING:
+	  {
+	    const char *str = *(const char **)rdata;
+	    if (str)
+	      pdump_add_entry (&pdump_opaque_data_list, str, strlen (str)+1, 1, 0);
+	    break;
+	  }
+	case XD_DOC_STRING:
+	  {
+	    const char *str = *(const char **)rdata;
+	    if ((EMACS_INT)str > 0)
+	      pdump_add_entry (&pdump_opaque_data_list, str, strlen (str)+1, 1, 0);
+	    break;
+	  }
+	case XD_LISP_OBJECT:
+	  {
+	    EMACS_INT count = desc[pos].data1;
+	    int i;
+	    if (XD_IS_INDIRECT (count))
+	      count = pdump_get_indirect_count (count, desc, data);
+	    for(i=0;i<count;i++) {
+	      const Lisp_Object *pobj = ((const Lisp_Object *)rdata) + i;
+	      Lisp_Object dobj = *pobj;
+	      backtrace[me].offset = (const char *)pobj - (const char *)data;
+	      pdump_register_object (dobj);
+	    }
+	    break;
+	  }
+	case XD_STRUCT_PTR:
+	  {
+	    EMACS_INT count = desc[pos].data1;
+	    const struct struct_description *sdesc = desc[pos].data2;
+	    const char *dobj = *(const char **)rdata;
+	    if (dobj) {
+	      if (XD_IS_INDIRECT (count))
+		count = pdump_get_indirect_count (count, desc, data);
+	      pdump_register_struct (dobj, sdesc, count);
+	    }
+	    break;
+	  }
+	default:
+	  fprintf (stderr, "Unsupported dump type : %d\n", desc[pos].type);
+	  pdump_backtrace ();
+	  abort ();
+	};
+}
+}
+static void
+pdump_register_object (Lisp_Object obj)
+{
+if (!obj ||
+!POINTER_TYPE_P (XTYPE (obj)) ||
+pdump_get_entry (XRECORD_LHEADER (obj)))
+return;
+if (XRECORD_LHEADER_IMPLEMENTATION (obj)->description)
+{
+int me = depth++;
+if (me>65536)
+	{
+	  fprintf (stderr, "Backtrace overflow, loop ?\n");
+	  abort ();
+	}
+backtrace[me].obj = obj;
+backtrace[me].position = 0;
+backtrace[me].offset = 0;
+pdump_add_entry (pdump_object_table + XRECORD_LHEADER (obj)->type,
+		       XRECORD_LHEADER (obj),
+		       XRECORD_LHEADER_IMPLEMENTATION (obj)->static_size ?
+		       XRECORD_LHEADER_IMPLEMENTATION (obj)->static_size :
+		       XRECORD_LHEADER_IMPLEMENTATION (obj)->size_in_bytes_method (XRECORD_LHEADER (obj)),
+		       1,
+		       1);
+pdump_register_sub (XRECORD_LHEADER (obj),
+			  XRECORD_LHEADER_IMPLEMENTATION (obj)->description,
+			  me);
+--depth;
+}
+else
+{
+pdump_alert_undump_object[XRECORD_LHEADER (obj)->type]++;
+fprintf (stderr, "Undumpable object type : %s\n", XRECORD_LHEADER_IMPLEMENTATION (obj)->name);
+pdump_backtrace ();
+}
+}
+static void
+pdump_register_struct (const void *data, const struct struct_description *sdesc, int count)
+{
+if (data && !pdump_get_entry (data))
+{
+int me = depth++;
+int i;
+if (me>65536)
+	{
+	  fprintf (stderr, "Backtrace overflow, loop ?\n");
+	  abort ();
+	}
+backtrace[me].obj = 0;
+backtrace[me].position = 0;
+backtrace[me].offset = 0;
+pdump_add_entry (pdump_get_entry_list (sdesc),
+		       data,
+		       sdesc->size,
+		       count,
+		       0);
+for (i=0; i<count; i++)
+	{
+	  pdump_register_sub (((char *)data) + sdesc->size*i,
+			      sdesc->description,
+			      me);
+	}
+--depth;
+}
+}
+static void
+pdump_dump_data (pdump_entry_list_elmt *elmt, const struct lrecord_description *desc)
+{
+size_t size = elmt->size;
+int count = elmt->count;
+if (desc)
+{
+int pos, i;
+void *rdata;
+memcpy (pdump_buf, elmt->obj, size*count);
+for (i=0; i<count; i++)
+	{
+	  char *cur = ((char *)pdump_buf) + i*size;
+	restart:
+	  for (pos = 0; desc[pos].type != XD_END; pos++)
+	    {
+	      rdata = cur + desc[pos].offset;
+	      switch (desc[pos].type)
+		{
+		case XD_SPECIFIER_END:
+		  pos = 0;
+		  desc = ((const struct Lisp_Specifier *)(elmt->obj))->methods->extra_description;
+		  goto restart;
+		case XD_SIZE_T:
+		case XD_INT:
+		case XD_LONG:
+		case XD_BYTECOUNT:
+		  break;
+		case XD_LO_RESET_NIL:
+		  {
+		    EMACS_INT count = desc[pos].data1;
+		    int i;
+		    if (XD_IS_INDIRECT (count))
+		      count = pdump_get_indirect_count (count, desc, elmt->obj);
+		    for (i=0; i<count; i++)
+		      ((EMACS_INT *)rdata)[i] = pdump_qnil->save_offset;
+		    break;
+		  }
+		case XD_INT_RESET:
+		  {
+		    EMACS_INT val = desc[pos].data1;
+		    if (XD_IS_INDIRECT (val))
+		      val = pdump_get_indirect_count (val, desc, elmt->obj);
+		    *(int *)rdata = val;
+		    break;
+		  }
+		case XD_OPAQUE_DATA_PTR:
+		case XD_C_STRING:
+		case XD_STRUCT_PTR:
+		  {
+		    void *ptr = *(void **)rdata;
+		    if (ptr)
+		      *(EMACS_INT *)rdata = pdump_get_entry (ptr)->save_offset;
+		    break;
+		  }
+		case XD_LO_LINK:
+		  {
+		    Lisp_Object obj = *(Lisp_Object *)rdata;
+		    pdump_entry_list_elmt *elmt1;
+		    for(;;)
+		      {
+			elmt1 = pdump_get_entry (XRECORD_LHEADER(obj));
+			if (elmt1)
+			  break;
+			obj = *(Lisp_Object *)(desc[pos].offset + (char *)(XRECORD_LHEADER (obj)));
+		      }
+		    *(EMACS_INT *)rdata = elmt1->save_offset;
+		    break;
+		  }
+		case XD_LISP_OBJECT:
+		  {
+		    EMACS_INT count = desc[pos].data1;
+		    int i;
+		    if (XD_IS_INDIRECT (count))
+		      count = pdump_get_indirect_count (count, desc, elmt->obj);
+		    for(i=0; i<count; i++)
+		      {
+			Lisp_Object *pobj = ((Lisp_Object *)rdata) + i;
+			Lisp_Object dobj = *pobj;
+			if (dobj && POINTER_TYPE_P (XTYPE (dobj)))
+			  *pobj = pdump_get_entry (XRECORD_LHEADER (dobj))->save_offset;
+		      }
+		    break;
+		  }
+		case XD_DOC_STRING:
+		  {
+		    EMACS_INT str = *(EMACS_INT *)rdata;
+		    if (str > 0)
+		      *(EMACS_INT *)rdata = pdump_get_entry ((void *)str)->save_offset;
+		    break;
+		  }
+		default:
+		  fprintf (stderr, "Unsupported dump type : %d\n", desc[pos].type);
+		  abort ();
+		};
+	    }
+	}
+}
+write (pdump_fd, desc ? pdump_buf : elmt->obj, size*count);
+if (elmt->is_lrecord && ((size*count) & 3))
+write (pdump_fd, "\0\0\0", 4-((size*count) & 3));
+}
+static void
+pdump_reloc_one (void *data, EMACS_INT delta, const struct lrecord_description *desc)
+{
+int pos;
+void *rdata;
+restart:
+for (pos = 0; desc[pos].type != XD_END; pos++)
+{
+rdata = ((char *)data) + desc[pos].offset;
+switch (desc[pos].type) {
+case XD_SPECIFIER_END:
+	pos = 0;
+	desc = ((const struct Lisp_Specifier *)data)->methods->extra_description;
+	goto restart;
+case XD_SIZE_T:
+case XD_INT:
+case XD_LONG:
+case XD_BYTECOUNT:
+case XD_INT_RESET:
+	break;
+case XD_OPAQUE_DATA_PTR:
+case XD_C_STRING:
+case XD_STRUCT_PTR:
+case XD_LO_LINK:
+	{
+	  EMACS_INT ptr = *(EMACS_INT *)rdata;
+	  if (ptr)
+	    *(EMACS_INT *)rdata = ptr+delta;
+	  break;
+	}
+case XD_LISP_OBJECT:
+case XD_LO_RESET_NIL:
+	{
+	  EMACS_INT count = desc[pos].data1;
+	  int i;
+	  if (XD_IS_INDIRECT (count))
+	    count = pdump_get_indirect_count (count, desc, data);
+	  for (i=0; i<count; i++)
+	    {
+	      Lisp_Object *pobj = ((Lisp_Object *)rdata) + i;
+	      Lisp_Object dobj = *pobj;
+	      if (dobj && POINTER_TYPE_P (XTYPE (dobj)))
+		*pobj = dobj + delta;
+	    }
+	  break;
+	}
+case XD_DOC_STRING:
+	{
+	  EMACS_INT str = *(EMACS_INT *)rdata;
+	  if (str > 0)
+	    *(EMACS_INT *)rdata = str + delta;
+	  break;
+	}
+default:
+	fprintf (stderr, "Unsupported dump type : %d\n", desc[pos].type);
+	abort ();
+};
+}
+}
+static void
+pdump_allocate_offset (pdump_entry_list_elmt *elmt, const struct lrecord_description *desc)
+{
+size_t size = (elmt->is_lrecord ? (elmt->size + 3) & ~3 : elmt->size)*elmt->count;
+elmt->save_offset = cur_offset;
+if (size>max_size)
+max_size = size;
+cur_offset += size;
+}
+static void
+pdump_scan_by_alignement (void (*f)(pdump_entry_list_elmt *, const struct lrecord_description *))
+{
+int align, i;
+const struct lrecord_description *idesc;
+pdump_entry_list_elmt *elmt;
+for (align=8; align>=0; align--)
+{
+for (i=0; i<=last_lrecord_type_index_assigned; i++)
+	if (pdump_object_table[i].align == align)
+	  {
+	    elmt = pdump_object_table[i].first;
+	    if (!elmt)
+	      continue;
+	    idesc = lrecord_implementations_table[i]->description;
+	    while (elmt)
+	      {
+		f (elmt, idesc);
+		elmt = elmt->next;
+	      }
+	  }
+for (i=0; i<pdump_struct_table.count; i++)
+	if (pdump_struct_table.list[i].list.align == align) {
+	  elmt = pdump_struct_table.list[i].list.first;
+	  idesc = pdump_struct_table.list[i].sdesc->description;
+	  while (elmt)
+	    {
+	      f (elmt, idesc);
+	      elmt = elmt->next;
+	    }
+	}
+elmt = pdump_opaque_data_list.first;
+while (elmt)
+	{
+	  if (align_table[elmt->size & 255] == align)
+	    f (elmt, 0);
+	  elmt = elmt->next;
+	}
+}
+}
+static void
+pdump_dump_staticvec (void)
+{
+Lisp_Object *reloc = malloc (staticidx*sizeof (Lisp_Object));
+int i;
+write (pdump_fd, staticvec, staticidx*sizeof (Lisp_Object *));
+for(i=0; i<staticidx; i++)
+{
+Lisp_Object obj = *staticvec[i];
+if (obj && POINTER_TYPE_P (XTYPE (obj)))
+	reloc[i] = pdump_get_entry (XRECORD_LHEADER (obj))->save_offset;
+else
+	reloc[i] = obj;
+}
+write (pdump_fd, reloc, staticidx*sizeof (Lisp_Object));
+free (reloc);
+}
+static void
+pdump_dump_structvec (void)
+{
+int i;
+for (i=0; i<dumpstructidx; i++)
+{
+EMACS_INT adr;
+write (pdump_fd, &(dumpstructvec[i].data), sizeof (void *));
+adr = pdump_get_entry (*(void **)(dumpstructvec[i].data))->save_offset;
+write (pdump_fd, &adr, sizeof (adr));
+}
+}
+static void
+pdump_dump_itable (void)
+{
+write (pdump_fd, lrecord_implementations_table, sizeof (lrecord_implementations_table));
+}
+static void
+pdump_dump_rtables (void)
+{
+int i, j;
+pdump_entry_list_elmt *elmt;
+pdump_reloc_table rt;
+for (i=0; i<=last_lrecord_type_index_assigned; i++)
+{
+elmt = pdump_object_table[i].first;
+if(!elmt)
+	continue;
+rt.desc = lrecord_implementations_table[i]->description;
+rt.count = pdump_object_table[i].count;
+write (pdump_fd, &rt, sizeof (rt));
+while (elmt)
+	{
+	  EMACS_INT rdata = pdump_get_entry (XRECORD_LHEADER (elmt->obj))->save_offset;
+	  write (pdump_fd, &rdata, sizeof (rdata));
+	  elmt = elmt->next;
+	}
+}
+rt.desc = 0;
+rt.count = 0;
+write (pdump_fd, &rt, sizeof (rt));
+for (i=0; i<pdump_struct_table.count; i++)
+{
+elmt = pdump_struct_table.list[i].list.first;
+rt.desc = pdump_struct_table.list[i].sdesc->description;
+rt.count = pdump_struct_table.list[i].list.count;
+write (pdump_fd, &rt, sizeof (rt));
+while (elmt)
+	{
+	  EMACS_INT rdata = pdump_get_entry (XRECORD_LHEADER (elmt->obj))->save_offset;
+	  for (j=0; j<elmt->count; j++) {
+	    write (pdump_fd, &rdata, sizeof (rdata));
+	    rdata += elmt->size;
+	  }
+	  elmt = elmt->next;
+	}
+}
+rt.desc = 0;
+rt.count = 0;
+write (pdump_fd, &rt, sizeof (rt));
+}
+static void
+pdump_dump_wired (void)
+{
+EMACS_INT count = pdump_wireidx + pdump_wireidx_list;
+int i;
+write (pdump_fd, &count, sizeof (count));
+for (i=0; i<pdump_wireidx; i++)
+{
+Lisp_Object obj = pdump_get_entry (XRECORD_LHEADER (*(pdump_wirevec[i])))->save_offset;
+write (pdump_fd, &pdump_wirevec[i], sizeof (pdump_wirevec[i]));
+write (pdump_fd, &obj, sizeof (obj));
+}
+for (i=0; i<pdump_wireidx_list; i++)
+{
+Lisp_Object obj = *(pdump_wirevec_list[i]);
+pdump_entry_list_elmt *elmt;
+EMACS_INT res;
+for(;;)
+	{
+	  const struct lrecord_description *desc;
+	  int pos;
+	  elmt = pdump_get_entry (XRECORD_LHEADER (obj));
+	  if (elmt)
+	    break;
+	  desc = XRECORD_LHEADER_IMPLEMENTATION (obj)->description;
+	  for (pos = 0; desc[pos].type != XD_LO_LINK; pos++)
+	    if (desc[pos].type == XD_END)
+	      abort ();
+	  obj = *(Lisp_Object *)(desc[pos].offset + (char *)(XRECORD_LHEADER (obj)));
+	}
+res = elmt->save_offset;
+write (pdump_fd, &pdump_wirevec_list[i], sizeof (pdump_wirevec_list[i]));
+write (pdump_fd, &res, sizeof (res));
+}
+}
+void
+pdump (void)
+{
+int i;
+Lisp_Object t_console, t_device, t_frame;
+int none;
+dump_header hd;
+/* These appear in a DEFVAR_LISP, which does a staticpro() */
+t_console = Vterminal_console;
+t_frame   = Vterminal_frame;
+t_device  = Vterminal_device;
+Vterminal_console = Qnil;
+Vterminal_frame   = Qnil;
+Vterminal_device  = Qnil;
+pdump_hash = malloc (PDUMP_HASHSIZE*sizeof (pdump_entry_list_elmt *));
+memset (pdump_hash, 0, PDUMP_HASHSIZE*sizeof (pdump_entry_list_elmt *));
+for (i=0; i<=last_lrecord_type_index_assigned; i++)
+{
+pdump_object_table[i].first = 0;
+pdump_object_table[i].align = 8;
+pdump_object_table[i].count = 0;
+pdump_alert_undump_object[i] = 0;
+}
+pdump_struct_table.count = 0;
+pdump_struct_table.size = -1;
+pdump_opaque_data_list.first = 0;
+pdump_opaque_data_list.align = 8;
+pdump_opaque_data_list.count = 0;
+depth = 0;
+for (i=0; i<staticidx; i++)
+pdump_register_object (*staticvec[i]);
+for (i=0; i<pdump_wireidx; i++)
+pdump_register_object (*pdump_wirevec[i]);
+none = 1;
+for(i=0;i<=last_lrecord_type_index_assigned;i++)
+if (pdump_alert_undump_object[i])
+{
+	if (none)
+	  printf ("Undumpable types list :\n");
+	none = 0;
+	printf ("  - %s (%d)\n", lrecord_implementations_table[i]->name, pdump_alert_undump_object[i]);
+}
+if (!none)
+return;
+for (i=0; i<dumpstructidx; i++)
+pdump_register_struct (*(void **)(dumpstructvec[i].data), dumpstructvec[i].desc, 1);
+memcpy (hd.signature, "XEmacsDP", 8);
+hd.reloc_address = 0;
+hd.nb_staticpro = staticidx;
+hd.nb_structdmp = dumpstructidx;
+hd.last_type    = last_lrecord_type_index_assigned;
+cur_offset = 256;
+max_size = 0;
+pdump_scan_by_alignement (pdump_allocate_offset);
+pdump_qnil = pdump_get_entry (XRECORD_LHEADER (Qnil));
+pdump_buf = malloc (max_size);
+pdump_fd = open ("xemacs.dmp", O_WRONLY|O_CREAT|O_TRUNC, 0666);
+hd.stab_offset = (cur_offset + 3) & ~3;
+write (pdump_fd, &hd, sizeof (hd));
+lseek (pdump_fd, 256, SEEK_SET);
+pdump_scan_by_alignement (pdump_dump_data);
+lseek (pdump_fd, hd.stab_offset, SEEK_SET);
+pdump_dump_staticvec ();
+pdump_dump_structvec ();
+pdump_dump_itable ();
+pdump_dump_rtables ();
+pdump_dump_wired ();
+close (pdump_fd);
+free (pdump_buf);
+free (pdump_hash);
+Vterminal_console = t_console;
+Vterminal_frame   = t_frame;
+Vterminal_device  = t_device;
+}
+int
+pdump_load (void)
+{
+size_t length;
+int i;
+char *p;
+EMACS_INT delta;
+EMACS_INT count;
+pdump_start = pdump_end = 0;
+pdump_fd = open ("xemacs.dmp", O_RDONLY);
+if (pdump_fd<0)
+return 0;
+length = lseek (pdump_fd, 0, SEEK_END);
+lseek (pdump_fd, 0, SEEK_SET);
+#ifdef HAVE_MMAP
+pdump_start = mmap (0, length, PROT_READ|PROT_WRITE, MAP_PRIVATE, pdump_fd, 0);
+if (pdump_start == MAP_FAILED)
+pdump_start = 0;
+#endif
+if (!pdump_start)
+{
+pdump_start = (void *)((((unsigned long)(malloc(length+255))) + 255) & ~255);
+read(pdump_fd, pdump_start, length);
+}
+close (pdump_fd);
+pdump_end = pdump_start + length;
+staticidx = ((dump_header *)(pdump_start))->nb_staticpro;
+last_lrecord_type_index_assigned = ((dump_header *)(pdump_start))->last_type;
+delta = ((EMACS_INT)pdump_start) - ((dump_header *)pdump_start)->reloc_address;
+p = pdump_start + ((dump_header *)pdump_start)->stab_offset;
+/* Put back the staticvec in place */
+memcpy (staticvec, p, staticidx*sizeof (Lisp_Object *));
+p += staticidx*sizeof (Lisp_Object *);
+for (i=0; i<staticidx; i++)
+{
+Lisp_Object obj = *(Lisp_Object *)p;
+p += sizeof (Lisp_Object);
+if (obj && POINTER_TYPE_P (XTYPE (obj)))
+	obj += delta;
+*staticvec[i] = obj;
+}
+/* Put back the dumpstructs */
+for (i=0; i<((dump_header *)pdump_start)->nb_structdmp; i++)
+{
+void **adr = *(void **)p;
+p += sizeof (void *);
+*adr = (void *)((*(EMACS_INT *)p) + delta);
+p += sizeof (EMACS_INT);
+}
+/* Put back the lrecord_implementations_table */
+memcpy (lrecord_implementations_table, p, sizeof (lrecord_implementations_table));
+p += sizeof (lrecord_implementations_table);
+/* Give back their numbers to the lrecord implementations */
+for (i=0; i<sizeof(lrecord_implementations_table)/sizeof(lrecord_implementations_table[0]); i++)
+if (lrecord_implementations_table[i])
+{
+	*(lrecord_implementations_table[i]->lrecord_type_index) = i;
+	last_lrecord_type_index_assigned = i;
+}
+/* Do the relocations */
+pdump_rt_list = p;
+count = 2;
+for(;;)
+{
+pdump_reloc_table *rt = (pdump_reloc_table *)p;
+p += sizeof (pdump_reloc_table);
+if (rt->desc) {
+	for (i=0; i<rt->count; i++)
+	  {
+	    EMACS_INT adr = delta + *(EMACS_INT *)p;
+	    *(EMACS_INT *)p = adr;
+	    pdump_reloc_one ((void *)adr, delta, rt->desc);
+	    p += sizeof (EMACS_INT);
+	  }
+} else
+	if(!(--count))
+	  break;
+}
+/* Put the pdump_wire variables in place */
+count = *(EMACS_INT *)p;
+p += sizeof(EMACS_INT);
+for (i=0; i<count; i++)
+{
+Lisp_Object *var, obj;
+var = *(Lisp_Object **)p;
+p += sizeof (Lisp_Object *);
+obj = *(Lisp_Object *)p;
+p += sizeof (Lisp_Object);
+if (obj && POINTER_TYPE_P (XTYPE (obj)))
+	obj += delta;
+*var = obj;
+}
+/* Final cleanups */
+/*   reorganize hash tables */
+p = pdump_rt_list;
+for(;;)
+{
+pdump_reloc_table *rt = (pdump_reloc_table *)p;
+p += sizeof (pdump_reloc_table);
+if (!rt->desc)
+	break;
+if (rt->desc == hash_table_description)
+	{
+	  for (i=0; i<rt->count; i++)
+	    {
+	      struct Lisp_Hash_Table *ht = XHASH_TABLE (*(EMACS_INT *)p);
+	      reorganize_hash_table (ht);
+	      p += sizeof (EMACS_INT);
+	    }
+	  break;
+	} else
+	  p += sizeof (EMACS_INT)*rt->count;
+}
+return 1;
+}
+#endif

Mercurial > hg > xemacs-beta

comparison src/alloc.c @ 428:3ecd8885ac67 r21-2-22