/* Storage allocation and gc for GNU Emacs Lisp interpreter.
- Copyright (C) 1985, 1986, 1988, 1993, 1994 Free Software Foundation, Inc.
+ Copyright (C) 1985, 86, 88, 93, 94, 95 Free Software Foundation, Inc.
This file is part of GNU Emacs.
You should have received a copy of the GNU General Public License
along with GNU Emacs; see the file COPYING. If not, write to
-the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
+the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA. */
+/* Note that this declares bzero on OSF/1. How dumb. */
#include <signal.h>
#include <config.h>
#include "window.h"
#include "frame.h"
#include "blockinput.h"
+#include "keyboard.h"
#endif
#include "syssignal.h"
+extern char *sbrk ();
+
+/* The following come from gmalloc.c. */
+
+#if defined (__STDC__) && __STDC__
+#include <stddef.h>
+#define __malloc_size_t size_t
+#else
+#define __malloc_size_t unsigned int
+#endif
+extern __malloc_size_t _bytes_used;
+extern int __malloc_extra_blocks;
+
+extern Lisp_Object Vhistory_length;
+
#define max(A,B) ((A) > (B) ? (A) : (B))
+#define min(A,B) ((A) < (B) ? (A) : (B))
/* Macro to verify that storage intended for Lisp objects is not
out of range to fit in the space for a pointer.
} \
} while (0)
+/* Value of _bytes_used, when spare_memory was freed. */
+static __malloc_size_t bytes_used_when_full;
+
/* Number of bytes of consing done since the last gc */
int consing_since_gc;
+/* Count the amount of consing of various sorts of space. */
+int cons_cells_consed;
+int floats_consed;
+int vector_cells_consed;
+int symbols_consed;
+int string_chars_consed;
+int misc_objects_consed;
+int intervals_consed;
+
/* Number of bytes of consing since gc before another gc should be done. */
int gc_cons_threshold;
/* Nonzero during gc */
int gc_in_progress;
+/* Nonzero means display messages at beginning and end of GC. */
+int garbage_collection_messages;
+
#ifndef VIRT_ADDR_VARIES
extern
#endif /* VIRT_ADDR_VARIES */
int undo_limit;
int undo_strong_limit;
+/* Points to memory space allocated as "spare",
+ to be freed if we run out of memory. */
+static char *spare_memory;
+
+/* Amount of spare memory to keep in reserve. */
+#define SPARE_MEMORY (1 << 14)
+
+/* Number of extra blocks malloc should get when it needs more core. */
+static int malloc_hysteresis;
+
+/* Nonzero when malloc is called for allocating Lisp object space. */
+int allocating_for_lisp;
+
/* Non-nil means defun should do purecopy on the function definition */
Lisp_Object Vpurify_flag;
#define MAX_SAVE_STACK 16000
#endif
-/* Define DONT_COPY_FLAG to be the bit in a small string that was placed
- in the low bit of the size field when marking small strings. */
+/* Define DONT_COPY_FLAG to be some bit which will always be zero in a
+ pointer to a Lisp_Object, when that pointer is viewed as an integer.
+ (On most machines, pointers are even, so we can use the low bit.
+ Word-addressable architectures may need to override this in the m-file.)
+ When linking references to small strings through the size field, we
+ use this slot to hold the bit that would otherwise be interpreted as
+ the GC mark bit. */
#ifndef DONT_COPY_FLAG
-#define DONT_COPY_FLAG PSEUDO_VECTOR_FLAG
+#define DONT_COPY_FLAG 1
#endif /* no DONT_COPY_FLAG */
/* Buffer in which we save a copy of the C stack at each GC. */
/* Non-zero means ignore malloc warnings. Set during initialization. */
int ignore_warnings;
-static void mark_object (), mark_buffer ();
+Lisp_Object Qgc_cons_threshold, Qchar_table_extra_slots;
+
+static void mark_object (), mark_buffer (), mark_kboards ();
static void clear_marks (), gc_sweep ();
static void compact_strings ();
\f
}
/* Called if malloc returns zero */
+
memory_full ()
{
+#ifndef SYSTEM_MALLOC
+ bytes_used_when_full = _bytes_used;
+#endif
+
+ /* The first time we get here, free the spare memory. */
+ if (spare_memory)
+ {
+ free (spare_memory);
+ spare_memory = 0;
+ }
+
+ /* This used to call error, but if we've run out of memory, we could get
+ infinite recursion trying to build the string. */
+ while (1)
+ Fsignal (Qerror, memory_signal_data);
+}
+
+/* Called if we can't allocate relocatable space for a buffer. */
+
+void
+buffer_memory_full ()
+{
+ /* If buffers use the relocating allocator,
+ no need to free spare_memory, because we may have plenty of malloc
+ space left that we could get, and if we don't, the malloc that fails
+ will itself cause spare_memory to be freed.
+ If buffers don't use the relocating allocator,
+ treat this like any other failing malloc. */
+
+#ifndef REL_ALLOC
+ memory_full ();
+#endif
+
/* This used to call error, but if we've run out of memory, we could get
infinite recursion trying to build the string. */
while (1)
extern void (*__free_hook) ();
static void (*old_free_hook) ();
+/* This function is used as the hook for free to call. */
+
static void
emacs_blocked_free (ptr)
void *ptr;
BLOCK_INPUT;
__free_hook = old_free_hook;
free (ptr);
+ /* 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. */
+ if (spare_memory == 0
+ /* Verify there is enough space that even with the malloc
+ hysteresis this call won't run out again.
+ The code here is correct as long as SPARE_MEMORY
+ is substantially larger than the block size malloc uses. */
+ && (bytes_used_when_full
+ > _bytes_used + max (malloc_hysteresis, 4) * SPARE_MEMORY))
+ spare_memory = (char *) malloc (SPARE_MEMORY);
+
__free_hook = emacs_blocked_free;
UNBLOCK_INPUT;
}
+/* 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 ()
+{
+ if (spare_memory == 0)
+ spare_memory = (char *) malloc (SPARE_MEMORY);
+}
+
+/* This function is the malloc hook that Emacs uses. */
+
static void *
emacs_blocked_malloc (size)
unsigned size;
BLOCK_INPUT;
__malloc_hook = old_malloc_hook;
+ __malloc_extra_blocks = malloc_hysteresis;
value = (void *) malloc (size);
__malloc_hook = emacs_blocked_malloc;
UNBLOCK_INPUT;
static void
init_intervals ()
{
+ allocating_for_lisp = 1;
interval_block
= (struct interval_block *) malloc (sizeof (struct interval_block));
+ allocating_for_lisp = 0;
interval_block->next = 0;
- bzero (interval_block->intervals, sizeof interval_block->intervals);
+ bzero ((char *) interval_block->intervals, sizeof interval_block->intervals);
interval_block_index = 0;
interval_free_list = 0;
}
{
if (interval_block_index == INTERVAL_BLOCK_SIZE)
{
- register struct interval_block *newi
- = (struct interval_block *) xmalloc (sizeof (struct interval_block));
+ register struct interval_block *newi;
+
+ allocating_for_lisp = 1;
+ newi = (struct interval_block *) xmalloc (sizeof (struct interval_block));
+ allocating_for_lisp = 0;
VALIDATE_LISP_STORAGE (newi, sizeof *newi);
newi->next = interval_block;
interval_block = newi;
val = &interval_block->intervals[interval_block_index++];
}
consing_since_gc += sizeof (struct interval);
+ intervals_consed++;
RESET_INTERVAL (val);
return val;
}
void
init_float ()
{
+ allocating_for_lisp = 1;
float_block = (struct float_block *) malloc (sizeof (struct float_block));
+ allocating_for_lisp = 0;
float_block->next = 0;
- bzero (float_block->floats, sizeof float_block->floats);
+ bzero ((char *) float_block->floats, sizeof float_block->floats);
float_block_index = 0;
float_free_list = 0;
}
{
if (float_block_index == FLOAT_BLOCK_SIZE)
{
- register struct float_block *new = (struct float_block *) xmalloc (sizeof (struct float_block));
+ register struct float_block *new;
+
+ allocating_for_lisp = 1;
+ new = (struct float_block *) xmalloc (sizeof (struct float_block));
+ allocating_for_lisp = 0;
VALIDATE_LISP_STORAGE (new, sizeof *new);
new->next = float_block;
float_block = new;
XFLOAT (val)->data = float_value;
XSETFASTINT (XFLOAT (val)->type, 0); /* bug chasing -wsr */
consing_since_gc += sizeof (struct Lisp_Float);
+ floats_consed++;
return val;
}
void
init_cons ()
{
+ allocating_for_lisp = 1;
cons_block = (struct cons_block *) malloc (sizeof (struct cons_block));
+ allocating_for_lisp = 0;
cons_block->next = 0;
- bzero (cons_block->conses, sizeof cons_block->conses);
+ bzero ((char *) cons_block->conses, sizeof cons_block->conses);
cons_block_index = 0;
cons_free_list = 0;
}
{
if (cons_block_index == CONS_BLOCK_SIZE)
{
- register struct cons_block *new = (struct cons_block *) xmalloc (sizeof (struct cons_block));
+ register struct cons_block *new;
+ allocating_for_lisp = 1;
+ new = (struct cons_block *) xmalloc (sizeof (struct cons_block));
+ allocating_for_lisp = 0;
VALIDATE_LISP_STORAGE (new, sizeof *new);
new->next = cons_block;
cons_block = new;
XCONS (val)->car = car;
XCONS (val)->cdr = cdr;
consing_since_gc += sizeof (struct Lisp_Cons);
+ cons_cells_consed++;
return val;
}
int nargs;
register Lisp_Object *args;
{
- register Lisp_Object len, val, val_tail;
+ register Lisp_Object val;
+ val = Qnil;
- XSETFASTINT (len, nargs);
- val = Fmake_list (len, Qnil);
- val_tail = val;
- while (!NILP (val_tail))
+ while (nargs > 0)
{
- XCONS (val_tail)->car = *args++;
- val_tail = XCONS (val_tail)->cdr;
+ nargs--;
+ val = Fcons (args[nargs], val);
}
return val;
}
{
struct Lisp_Vector *p;
+ allocating_for_lisp = 1;
p = (struct Lisp_Vector *)xmalloc (sizeof (struct Lisp_Vector)
+ (len - 1) * sizeof (Lisp_Object));
+ allocating_for_lisp = 0;
VALIDATE_LISP_STORAGE (p, 0);
consing_since_gc += (sizeof (struct Lisp_Vector)
+ (len - 1) * sizeof (Lisp_Object));
+ vector_cells_consed += len;
p->next = all_vectors;
all_vectors = p;
return vector;
}
+DEFUN ("make-char-table", Fmake_char_table, Smake_char_table, 1, 2, 0,
+ "Return a newly created char-table, with purpose PURPOSE.\n\
+Each element is initialized to INIT, which defaults to nil.\n\
+PURPOSE should be a symbol which has a `char-table-extra-slots' property.\n\
+The property's value should be an integer between 0 and 10.")
+ (purpose, init)
+ register Lisp_Object purpose, init;
+{
+ Lisp_Object vector;
+ Lisp_Object n;
+ CHECK_SYMBOL (purpose, 1);
+ /* For a deeper char-table, PURPOSE can be nil. */
+ n = NILP (purpose) ? 0 : Fget (purpose, Qchar_table_extra_slots);
+ CHECK_NUMBER (n, 0);
+ if (XINT (n) < 0 || XINT (n) > 10)
+ args_out_of_range (n, Qnil);
+ /* Add 2 to the size for the defalt and parent slots. */
+ vector = Fmake_vector (make_number (CHAR_TABLE_STANDARD_SLOTS + XINT (n)),
+ init);
+ XCHAR_TABLE (vector)->parent = Qnil;
+ XCHAR_TABLE (vector)->purpose = purpose;
+ XSETCHAR_TABLE (vector, XCHAR_TABLE (vector));
+ return vector;
+}
+
DEFUN ("vector", Fvector, Svector, 0, MANY, 0,
"Return a newly created vector with specified arguments as elements.\n\
Any number of arguments, even zero arguments, are allowed.")
XSETFASTINT (len, nargs);
if (!NILP (Vpurify_flag))
- val = make_pure_vector (len);
+ val = make_pure_vector ((EMACS_INT) nargs);
else
val = Fmake_vector (len, Qnil);
p = XVECTOR (val);
void
init_symbol ()
{
+ allocating_for_lisp = 1;
symbol_block = (struct symbol_block *) malloc (sizeof (struct symbol_block));
+ allocating_for_lisp = 0;
symbol_block->next = 0;
- bzero (symbol_block->symbols, sizeof symbol_block->symbols);
+ bzero ((char *) symbol_block->symbols, sizeof symbol_block->symbols);
symbol_block_index = 0;
symbol_free_list = 0;
}
DEFUN ("make-symbol", Fmake_symbol, Smake_symbol, 1, 1, 0,
"Return a newly allocated uninterned symbol whose name is NAME.\n\
Its value and function definition are void, and its property list is nil.")
- (str)
- Lisp_Object str;
+ (name)
+ Lisp_Object name;
{
register Lisp_Object val;
register struct Lisp_Symbol *p;
- CHECK_STRING (str, 0);
+ CHECK_STRING (name, 0);
if (symbol_free_list)
{
{
if (symbol_block_index == SYMBOL_BLOCK_SIZE)
{
- struct symbol_block *new = (struct symbol_block *) xmalloc (sizeof (struct symbol_block));
+ struct symbol_block *new;
+ allocating_for_lisp = 1;
+ new = (struct symbol_block *) xmalloc (sizeof (struct symbol_block));
+ allocating_for_lisp = 0;
VALIDATE_LISP_STORAGE (new, sizeof *new);
new->next = symbol_block;
symbol_block = new;
XSETSYMBOL (val, &symbol_block->symbols[symbol_block_index++]);
}
p = XSYMBOL (val);
- p->name = XSTRING (str);
+ p->name = XSTRING (name);
+ p->obarray = Qnil;
p->plist = Qnil;
p->value = Qunbound;
p->function = Qunbound;
p->next = 0;
consing_since_gc += sizeof (struct Lisp_Symbol);
+ symbols_consed++;
return val;
}
\f
void
init_marker ()
{
+ allocating_for_lisp = 1;
marker_block = (struct marker_block *) malloc (sizeof (struct marker_block));
+ allocating_for_lisp = 0;
marker_block->next = 0;
- bzero (marker_block->markers, sizeof marker_block->markers);
+ bzero ((char *) marker_block->markers, sizeof marker_block->markers);
marker_block_index = 0;
marker_free_list = 0;
}
{
if (marker_block_index == MARKER_BLOCK_SIZE)
{
- struct marker_block *new
- = (struct marker_block *) xmalloc (sizeof (struct marker_block));
+ struct marker_block *new;
+ allocating_for_lisp = 1;
+ new = (struct marker_block *) xmalloc (sizeof (struct marker_block));
+ allocating_for_lisp = 0;
VALIDATE_LISP_STORAGE (new, sizeof *new);
new->next = marker_block;
marker_block = new;
XSETMISC (val, &marker_block->markers[marker_block_index++]);
}
consing_since_gc += sizeof (union Lisp_Misc);
+ misc_objects_consed++;
return val;
}
register struct Lisp_Marker *p;
val = allocate_misc ();
- XMISC (val)->type = Lisp_Misc_Marker;
+ XMISCTYPE (val) = Lisp_Misc_Marker;
p = XMARKER (val);
p->buffer = 0;
p->bufpos = 0;
p->chain = Qnil;
+ p->insertion_type = 0;
return val;
}
\f
struct string_block_head
{
struct string_block *next, *prev;
- int pos;
+ EMACS_INT pos;
};
struct string_block
void
init_strings ()
{
+ allocating_for_lisp = 1;
current_string_block = (struct string_block *) malloc (sizeof (struct string_block));
+ allocating_for_lisp = 0;
first_string_block = current_string_block;
consing_since_gc += sizeof (struct string_block);
current_string_block->next = 0;
return val;
}
+DEFUN ("make-bool-vector", Fmake_bool_vector, Smake_bool_vector, 2, 2, 0,
+ "Return a newly created bitstring of length LENGTH, with INIT as each element.\n\
+Both LENGTH and INIT must be numbers. INIT matters only in whether it is t or nil.")
+ (length, init)
+ Lisp_Object length, init;
+{
+ register Lisp_Object val;
+ struct Lisp_Bool_Vector *p;
+ int real_init, i;
+ int length_in_chars, length_in_elts, bits_per_value;
+
+ CHECK_NATNUM (length, 0);
+
+ bits_per_value = sizeof (EMACS_INT) * BITS_PER_CHAR;
+
+ length_in_elts = (XFASTINT (length) + bits_per_value - 1) / bits_per_value;
+ length_in_chars = length_in_elts * sizeof (EMACS_INT);
+
+ /* We must allocate one more elements than LENGTH_IN_ELTS for the
+ slot `size' of the struct Lisp_Bool_Vector. */
+ val = Fmake_vector (make_number (length_in_elts + 1), Qnil);
+ p = XBOOL_VECTOR (val);
+ /* Get rid of any bits that would cause confusion. */
+ p->vector_size = 0;
+ XSETBOOL_VECTOR (val, p);
+ p->size = XFASTINT (length);
+
+ real_init = (NILP (init) ? 0 : -1);
+ for (i = 0; i < length_in_chars ; i++)
+ p->data[i] = real_init;
+
+ return val;
+}
+
Lisp_Object
make_string (contents, length)
char *contents;
else if (fullsize > STRING_BLOCK_OUTSIZE)
/* This string gets its own string block */
{
- register struct string_block *new
- = (struct string_block *) xmalloc (sizeof (struct string_block_head) + fullsize);
+ register struct string_block *new;
+ allocating_for_lisp = 1;
+ new = (struct string_block *) xmalloc (sizeof (struct string_block_head) + fullsize);
+ allocating_for_lisp = 0;
VALIDATE_LISP_STORAGE (new, 0);
consing_since_gc += sizeof (struct string_block_head) + fullsize;
new->pos = fullsize;
else
/* Make a new current string block and start it off with this string */
{
- register struct string_block *new
- = (struct string_block *) xmalloc (sizeof (struct string_block));
+ register struct string_block *new;
+ allocating_for_lisp = 1;
+ new = (struct string_block *) xmalloc (sizeof (struct string_block));
+ allocating_for_lisp = 0;
VALIDATE_LISP_STORAGE (new, sizeof *new);
consing_since_gc += sizeof (struct string_block);
current_string_block->next = new;
(struct Lisp_String *) current_string_block->chars);
}
+ string_chars_consed += fullsize;
XSTRING (val)->size = length;
XSTRING (val)->data[length] = 0;
INITIALIZE_INTERVAL (XSTRING (val), NULL_INTERVAL);
register int i, size;
size = XVECTOR (obj)->size;
- vec = XVECTOR (make_pure_vector (size));
+ if (size & PSEUDOVECTOR_FLAG)
+ size &= PSEUDOVECTOR_SIZE_MASK;
+ vec = XVECTOR (make_pure_vector ((EMACS_INT) size));
for (i = 0; i < size; i++)
vec->contents[i] = Fpurecopy (XVECTOR (obj)->contents[i]);
if (COMPILEDP (obj))
struct gcpro *gcprolist;
-#define NSTATICS 512
+#define NSTATICS 768
Lisp_Object *staticvec[NSTATICS] = {0};
int total_free_floats, total_floats;
#endif /* LISP_FLOAT_TYPE */
+/* Temporarily prevent garbage collection. */
+
+int
+inhibit_garbage_collection ()
+{
+ int count = specpdl_ptr - specpdl;
+ Lisp_Object number;
+ int nbits = min (VALBITS, BITS_PER_INT);
+
+ XSETINT (number, ((EMACS_INT) 1 << (nbits - 1)) - 1);
+
+ specbind (Qgc_cons_threshold, number);
+
+ return count;
+}
+
DEFUN ("garbage-collect", Fgarbage_collect, Sgarbage_collect, 0, 0, "",
"Reclaim storage for Lisp objects no longer needed.\n\
Returns info on amount of space in use:\n\
((USED-CONSES . FREE-CONSES) (USED-SYMS . FREE-SYMS)\n\
(USED-MARKERS . FREE-MARKERS) USED-STRING-CHARS USED-VECTOR-SLOTS\n\
- (USED-FLOATS . FREE-FLOATS))\n\
+ (USED-FLOATS . FREE-FLOATS) (USED-INTERVALS . FREE-INTERVALS))\n\
Garbage collection happens automatically if you cons more than\n\
`gc-cons-threshold' bytes of Lisp data since previous garbage collection.")
()
char stack_top_variable;
register int i;
+ /* In case user calls debug_print during GC,
+ don't let that cause a recursive GC. */
+ consing_since_gc = 0;
+
/* Save a copy of the contents of the stack, for debugging. */
#if MAX_SAVE_STACK > 0
if (NILP (Vpurify_flag))
}
#endif /* MAX_SAVE_STACK > 0 */
- if (!noninteractive)
+ if (garbage_collection_messages)
message1_nolog ("Garbage collecting...");
- /* Don't keep command history around forever */
- tem = Fnthcdr (make_number (30), Vcommand_history);
- if (CONSP (tem))
- XCONS (tem)->cdr = Qnil;
+ /* Don't keep command history around forever. */
+ if (NUMBERP (Vhistory_length) && XINT (Vhistory_length) > 0)
+ {
+ tem = Fnthcdr (Vhistory_length, Vcommand_history);
+ if (CONSP (tem))
+ XCONS (tem)->cdr = Qnil;
+ }
/* Likewise for undo information. */
{
gc_in_progress = 1;
-/* clear_marks (); */
+ /* clear_marks (); */
/* In each "large string", set the MARKBIT of the size field.
That enables mark_object to recognize them. */
XMARK (backlist->args[i]);
}
}
+ mark_kboards ();
gc_sweep ();
XUNMARK (buffer_defaults.name);
XUNMARK (buffer_local_symbols.name);
-/* clear_marks (); */
+ /* clear_marks (); */
gc_in_progress = 0;
consing_since_gc = 0;
if (gc_cons_threshold < 10000)
gc_cons_threshold = 10000;
- if (omessage || minibuf_level > 0)
- message2_nolog (omessage, omessage_length);
- else if (!noninteractive)
- message1_nolog ("Garbage collecting...done");
+ if (garbage_collection_messages)
+ {
+ if (omessage || minibuf_level > 0)
+ message2_nolog (omessage, omessage_length);
+ else
+ message1_nolog ("Garbage collecting...done");
+ }
return Fcons (Fcons (make_number (total_conses),
make_number (total_free_conses)),
make_number (total_free_markers)),
Fcons (make_number (total_string_size),
Fcons (make_number (total_vector_size),
-
+ Fcons (Fcons
#ifdef LISP_FLOAT_TYPE
- Fcons (Fcons (make_number (total_floats),
- make_number (total_free_floats)),
- Qnil)
+ (make_number (total_floats),
+ make_number (total_free_floats)),
#else /* not LISP_FLOAT_TYPE */
- Qnil
+ (make_number (0), make_number (0)),
#endif /* not LISP_FLOAT_TYPE */
- )))));
+ Fcons (Fcons
+#ifdef USE_TEXT_PROPERTIES
+ (make_number (total_intervals),
+ make_number (total_free_intervals)),
+#else /* not USE_TEXT_PROPERTIES */
+ (make_number (0), make_number (0)),
+#endif /* not USE_TEXT_PROPERTIES */
+ Qnil)))))));
}
\f
#if 0
{
register int i;
for (i = 0; i < lim; i++)
- if (sblk->markers[i].type == Lisp_Misc_Marker)
+ if (sblk->markers[i].u_marker.type == Lisp_Misc_Marker)
XUNMARK (sblk->markers[i].u_marker.chain);
lim = MARKER_BLOCK_SIZE;
}
int last_marked_index;
static void
-mark_object (objptr)
- Lisp_Object *objptr;
+mark_object (argptr)
+ Lisp_Object *argptr;
{
+ Lisp_Object *objptr = argptr;
register Lisp_Object obj;
loop:
if (last_marked_index == LAST_MARKED_SIZE)
last_marked_index = 0;
-#ifdef SWITCH_ENUM_BUG
- switch ((int) XGCTYPE (obj))
-#else
- switch (XGCTYPE (obj))
-#endif
+ switch (SWITCH_ENUM_CAST (XGCTYPE (obj)))
{
case Lisp_String:
{
{
/* A small string. Put this reference
into the chain of references to it.
- The address OBJPTR is even, so if the address
- includes MARKBIT, put it in the low bit
+ If the address includes MARKBIT, put that bit elsewhere
when we store OBJPTR into the size field. */
if (XMARKBIT (*objptr))
if ((EMACS_INT) objptr & DONT_COPY_FLAG)
abort ();
- ptr->size = (EMACS_INT) objptr & ~MARKBIT;
- if ((EMACS_INT) objptr & MARKBIT)
- ptr->size |= DONT_COPY_FLAG;
+ ptr->size = (EMACS_INT) objptr;
+ if (ptr->size & MARKBIT)
+ ptr->size ^= MARKBIT | DONT_COPY_FLAG;
}
}
break;
objptr = (Lisp_Object *) &ptr1->contents[COMPILED_CONSTANTS];
goto loop;
}
-#ifdef MULTI_FRAME
else if (GC_FRAMEP (obj))
{
/* See comment above under Lisp_Vector for why this is volatile. */
ptr->size |= ARRAY_MARK_FLAG; /* Else mark it */
mark_object (&ptr->name);
+ mark_object (&ptr->icon_name);
+ mark_object (&ptr->title);
mark_object (&ptr->focus_frame);
mark_object (&ptr->selected_window);
mark_object (&ptr->minibuffer_window);
mark_object (&ptr->face_alist);
mark_object (&ptr->menu_bar_vector);
mark_object (&ptr->buffer_predicate);
+ mark_object (&ptr->buffer_list);
+ }
+ else if (GC_BOOL_VECTOR_P (obj))
+ {
+ register struct Lisp_Vector *ptr = XVECTOR (obj);
+
+ if (ptr->size & ARRAY_MARK_FLAG)
+ break; /* Already marked */
+ ptr->size |= ARRAY_MARK_FLAG; /* Else mark it */
}
-#endif /* MULTI_FRAME */
else
{
register struct Lisp_Vector *ptr = XVECTOR (obj);
break;
case Lisp_Misc:
- switch (XMISC (obj)->type)
+ switch (XMISCTYPE (obj))
{
case Lisp_Misc_Marker:
XMARK (XMARKER (obj)->chain);
case Lisp_Misc_Boolfwd:
case Lisp_Misc_Objfwd:
case Lisp_Misc_Buffer_Objfwd:
+ case Lisp_Misc_Kboard_Objfwd:
/* Don't bother with Lisp_Buffer_Objfwd,
since all markable slots in current buffer marked anyway. */
/* Don't need to do Lisp_Objfwd, since the places they point
mark_buffer (base_buffer);
}
}
+
+
+/* Mark the pointers in the kboard objects. */
+
+static void
+mark_kboards ()
+{
+ KBOARD *kb;
+ Lisp_Object *p;
+ for (kb = all_kboards; kb; kb = kb->next_kboard)
+ {
+ if (kb->kbd_macro_buffer)
+ for (p = kb->kbd_macro_buffer; p < kb->kbd_macro_ptr; p++)
+ mark_object (p);
+ mark_object (&kb->Vprefix_arg);
+ mark_object (&kb->kbd_queue);
+ mark_object (&kb->Vlast_kbd_macro);
+ mark_object (&kb->Vsystem_key_alist);
+ mark_object (&kb->system_key_syms);
+ }
+}
\f
/* Sweep: find all structures not marked, and free them. */
#ifndef standalone
/* Put all unmarked markers on free list.
- Dechain each one first from the buffer it points into,
+ Unchain each one first from the buffer it points into,
but only if it's a real marker. */
{
register struct marker_block *mblk;
for (mblk = marker_block; mblk; mblk = mblk->next)
{
register int i;
+ EMACS_INT already_free = -1;
+
for (i = 0; i < lim; i++)
{
Lisp_Object *markword;
- switch (mblk->markers[i].type)
+ switch (mblk->markers[i].u_marker.type)
{
case Lisp_Misc_Marker:
markword = &mblk->markers[i].u_marker.chain;
case Lisp_Misc_Overlay:
markword = &mblk->markers[i].u_overlay.plist;
break;
+ case Lisp_Misc_Free:
+ /* If the object was already free, keep it
+ on the free list. */
+ markword = &already_free;
+ break;
default:
markword = 0;
break;
if (markword && !XMARKBIT (*markword))
{
Lisp_Object tem;
- if (mblk->markers[i].type == Lisp_Misc_Marker)
+ if (mblk->markers[i].u_marker.type == Lisp_Misc_Marker)
{
/* tem1 avoids Sun compiler bug */
struct Lisp_Marker *tem1 = &mblk->markers[i].u_marker;
XSETMARKER (tem, tem1);
unchain_marker (tem);
}
- /* We could leave the type alone, since nobody checks it,
+ /* Set the type of the freed object to Lisp_Misc_Free.
+ We could leave the type alone, since nobody checks it,
but this might catch bugs faster. */
- mblk->markers[i].type = Lisp_Misc_Free;
+ mblk->markers[i].u_marker.type = Lisp_Misc_Free;
mblk->markers[i].u_free.chain = marker_free_list;
marker_free_list = &mblk->markers[i];
num_free++;
else
{
vector->size &= ~ARRAY_MARK_FLAG;
- total_vector_size += vector->size;
+ if (vector->size & PSEUDOVECTOR_FLAG)
+ total_vector_size += (PSEUDOVECTOR_SIZE_MASK & vector->size);
+ else
+ total_vector_size += vector->size;
prev = vector, vector = vector->next;
}
}
if (s->size & ARRAY_MARK_FLAG)
{
((struct Lisp_String *)(&sb->chars[0]))->size
- &= ~ARRAY_MARK_FLAG & ~MARKBIT & ~DONT_COPY_FLAG;
+ &= ~ARRAY_MARK_FLAG & ~MARKBIT;
UNMARK_BALANCE_INTERVALS (s->intervals);
total_string_size += ((struct Lisp_String *)(&sb->chars[0]))->size;
prev = sb, sb = sb->next;
return end;
}
+DEFUN ("memory-use-counts", Fmemory_use_counts, Smemory_use_counts, 0, 0, 0,
+ "Return a list of counters that measure how much consing there has been.\n\
+Each of these counters increments for a certain kind of object.\n\
+The counters wrap around from the largest positive integer to zero.\n\
+Garbage collection does not decrease them.\n\
+The elements of the value are as follows:\n\
+ (CONSES FLOATS VECTOR-CELLS SYMBOLS STRING-CHARS MISCS INTERVALS)\n\
+All are in units of 1 = one object consed\n\
+except for VECTOR-CELLS and STRING-CHARS, which count the total length of\n\
+objects consed.\n\
+MISCS include overlays, markers, and some internal types.\n\
+Frames, windows, buffers, and subprocesses count as vectors\n\
+ (but the contents of a buffer's text do not count here).")
+ ()
+{
+ Lisp_Object lisp_cons_cells_consed;
+ Lisp_Object lisp_floats_consed;
+ Lisp_Object lisp_vector_cells_consed;
+ Lisp_Object lisp_symbols_consed;
+ Lisp_Object lisp_string_chars_consed;
+ Lisp_Object lisp_misc_objects_consed;
+ Lisp_Object lisp_intervals_consed;
+
+ XSETINT (lisp_cons_cells_consed,
+ cons_cells_consed & ~(((EMACS_INT) 1) << (VALBITS - 1)));
+ XSETINT (lisp_floats_consed,
+ floats_consed & ~(((EMACS_INT) 1) << (VALBITS - 1)));
+ XSETINT (lisp_vector_cells_consed,
+ vector_cells_consed & ~(((EMACS_INT) 1) << (VALBITS - 1)));
+ XSETINT (lisp_symbols_consed,
+ symbols_consed & ~(((EMACS_INT) 1) << (VALBITS - 1)));
+ XSETINT (lisp_string_chars_consed,
+ string_chars_consed & ~(((EMACS_INT) 1) << (VALBITS - 1)));
+ XSETINT (lisp_misc_objects_consed,
+ misc_objects_consed & ~(((EMACS_INT) 1) << (VALBITS - 1)));
+ XSETINT (lisp_intervals_consed,
+ intervals_consed & ~(((EMACS_INT) 1) << (VALBITS - 1)));
+
+ return Fcons (lisp_cons_cells_consed,
+ Fcons (lisp_floats_consed,
+ Fcons (lisp_vector_cells_consed,
+ Fcons (lisp_symbols_consed,
+ Fcons (lisp_string_chars_consed,
+ Fcons (lisp_misc_objects_consed,
+ Fcons (lisp_intervals_consed,
+ Qnil)))))));
+}
\f
/* Initialization */
#endif /* LISP_FLOAT_TYPE */
INIT_INTERVALS;
+#ifdef REL_ALLOC
+ malloc_hysteresis = 32;
+#else
+ malloc_hysteresis = 0;
+#endif
+
+ spare_memory = (char *) malloc (SPARE_MEMORY);
+
ignore_warnings = 0;
gcprolist = 0;
staticidx = 0;
consing_since_gc = 0;
- gc_cons_threshold = 100000;
+ gc_cons_threshold = 100000 * sizeof (Lisp_Object);
#ifdef VIRT_ADDR_VARIES
malloc_sbrk_unused = 1<<22; /* A large number */
malloc_sbrk_used = 100000; /* as reasonable as any number */
DEFVAR_INT ("pure-bytes-used", &pureptr,
"Number of bytes of sharable Lisp data allocated so far.");
+ DEFVAR_INT ("cons-cells-consed", &cons_cells_consed,
+ "Number of cons cells that have been consed so far.");
+
+ DEFVAR_INT ("floats-consed", &floats_consed,
+ "Number of floats that have been consed so far.");
+
+ DEFVAR_INT ("vector-cells-consed", &vector_cells_consed,
+ "Number of vector cells that have been consed so far.");
+
+ DEFVAR_INT ("symbols-consed", &symbols_consed,
+ "Number of symbols that have been consed so far.");
+
+ DEFVAR_INT ("string-chars-consed", &string_chars_consed,
+ "Number of string characters that have been consed so far.");
+
+ DEFVAR_INT ("misc-objects-consed", &misc_objects_consed,
+ "Number of miscellaneous objects that have been consed so far.");
+
+ DEFVAR_INT ("intervals-consed", &intervals_consed,
+ "Number of intervals that have been consed so far.");
+
#if 0
DEFVAR_INT ("data-bytes-used", &malloc_sbrk_used,
"Number of bytes of unshared memory allocated in this session.");
which includes both saved text and other data.");
undo_strong_limit = 30000;
+ DEFVAR_BOOL ("garbage-collection-messages", &garbage_collection_messages,
+ "Non-nil means display messages at start and end of garbage collection.");
+ garbage_collection_messages = 0;
+
/* We build this in advance because if we wait until we need it, we might
not be able to allocate the memory to hold it. */
memory_signal_data
- = Fcons (Qerror, Fcons (build_string ("Memory exhausted"), Qnil));
+ = Fcons (Qerror, Fcons (build_string ("Memory exhausted--use M-x save-some-buffers RET"), Qnil));
staticpro (&memory_signal_data);
+ staticpro (&Qgc_cons_threshold);
+ Qgc_cons_threshold = intern ("gc-cons-threshold");
+
+ staticpro (&Qchar_table_extra_slots);
+ Qchar_table_extra_slots = intern ("char-table-extra-slots");
+
defsubr (&Scons);
defsubr (&Slist);
defsubr (&Svector);
defsubr (&Smake_byte_code);
defsubr (&Smake_list);
defsubr (&Smake_vector);
+ defsubr (&Smake_char_table);
defsubr (&Smake_string);
+ defsubr (&Smake_bool_vector);
defsubr (&Smake_symbol);
defsubr (&Smake_marker);
defsubr (&Spurecopy);
defsubr (&Sgarbage_collect);
defsubr (&Smemory_limit);
+ defsubr (&Smemory_use_counts);
}
HCoop / bpt / emacs.git / blobdiff