/* Storage allocation and gc for GNU Emacs Lisp interpreter.
- Copyright (C) 1985, 1986, 1988, 1993 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 <config.h>
#include "lisp.h"
#include "intervals.h"
#include "puresize.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;
+
#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.
do \
{ \
Lisp_Object val; \
- XSET (val, Lisp_Cons, (char *) address + size); \
+ XSETCONS (val, (char *) address + size); \
if ((char *) XCONS (val) != (char *) address + size) \
{ \
xfree (address); \
} \
} 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;
#ifndef HAVE_SHM
-int pure[PURESIZE / sizeof (int)] = {0,}; /* Force it into data space! */
+EMACS_INT pure[PURESIZE / sizeof (EMACS_INT)] = {0,}; /* Force it into data space! */
#define PUREBEG (char *) pure
#else
#define pure PURE_SEG_BITS /* Use shared memory segment */
you should be able to change that without too much recompilation.
So map_in_data initializes pure_size, and the dependencies work
out. */
-int pure_size;
+EMACS_INT pure_size;
#endif /* not HAVE_SHM */
/* Index in pure at which next pure object will be allocated. */
/* If nonzero, this is a warning delivered by malloc and not yet displayed. */
char *pending_malloc_warning;
+/* Pre-computed signal argument for use when memory is exhausted. */
+Lisp_Object memory_signal_data;
+
/* Maximum amount of C stack to save when a GC happens. */
#ifndef MAX_SAVE_STACK
#define MAX_SAVE_STACK 16000
#endif
+/* 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 1
+#endif /* no DONT_COPY_FLAG */
+
/* Buffer in which we save a copy of the C stack at each GC. */
char *stack_copy;
/* 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 ()
{
- error ("Memory exhausted");
+#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)
+ Fsignal (Qerror, memory_signal_data);
}
/* like malloc routines but check for no memory and block interrupt input. */
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;
}
mark_interval_tree (tree)
register INTERVAL tree;
{
- if (XMARKBIT (tree->plist))
- return;
+ /* No need to test if this tree has been marked already; this
+ function is always called through the MARK_INTERVAL_TREE macro,
+ which takes care of that. */
+
+ /* XMARK expands to an assignment; the LHS of an assignment can't be
+ a cast. */
+ XMARK (* (Lisp_Object *) &tree->parent);
traverse_intervals (tree, 1, 0, mark_interval, Qnil);
}
-#define MARK_INTERVAL_TREE(i) \
- { if (!NULL_INTERVAL_P (i)) mark_interval_tree (i); }
+#define MARK_INTERVAL_TREE(i) \
+ do { \
+ if (!NULL_INTERVAL_P (i) \
+ && ! XMARKBIT ((Lisp_Object) i->parent)) \
+ mark_interval_tree (i); \
+ } while (0)
/* The oddity in the call to XUNMARK is necessary because XUNMARK
expands to an assignment to its argument, and most C compilers don't
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;
}
free_float (ptr)
struct Lisp_Float *ptr;
{
- XFASTINT (ptr->type) = (int) float_free_list;
+ *(struct Lisp_Float **)&ptr->type = float_free_list;
float_free_list = ptr;
}
if (float_free_list)
{
- XSET (val, Lisp_Float, float_free_list);
- float_free_list = (struct Lisp_Float *) XFASTINT (float_free_list->type);
+ XSETFLOAT (val, float_free_list);
+ float_free_list = *(struct Lisp_Float **)&float_free_list->type;
}
else
{
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;
float_block_index = 0;
}
- XSET (val, Lisp_Float, &float_block->floats[float_block_index++]);
+ XSETFLOAT (val, &float_block->floats[float_block_index++]);
}
XFLOAT (val)->data = float_value;
- XFLOAT (val)->type = 0; /* bug chasing -wsr */
+ 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;
}
free_cons (ptr)
struct Lisp_Cons *ptr;
{
- XFASTINT (ptr->car) = (int) cons_free_list;
+ *(struct Lisp_Cons **)&ptr->car = cons_free_list;
cons_free_list = ptr;
}
if (cons_free_list)
{
- XSET (val, Lisp_Cons, cons_free_list);
- cons_free_list = (struct Lisp_Cons *) XFASTINT (cons_free_list->car);
+ XSETCONS (val, cons_free_list);
+ cons_free_list = *(struct Lisp_Cons **)&cons_free_list->car;
}
else
{
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;
cons_block_index = 0;
}
- XSET (val, Lisp_Cons, &cons_block->conses[cons_block_index++]);
+ XSETCONS (val, &cons_block->conses[cons_block_index++]);
}
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;
- XFASTINT (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;
}
register Lisp_Object val;
register int size;
- if (XTYPE (length) != Lisp_Int || XINT (length) < 0)
- length = wrong_type_argument (Qnatnump, length);
- size = XINT (length);
+ CHECK_NATNUM (length, 0);
+ size = XFASTINT (length);
val = Qnil;
while (size-- > 0)
struct Lisp_Vector *all_vectors;
+struct Lisp_Vector *
+allocate_vectorlike (len)
+ EMACS_INT len;
+{
+ 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 p;
+}
+
DEFUN ("make-vector", Fmake_vector, Smake_vector, 2, 2, 0,
"Return a newly created vector of length LENGTH, with each element being INIT.\n\
See also the function `vector'.")
(length, init)
register Lisp_Object length, init;
{
- register int sizei, index;
- register Lisp_Object vector;
+ Lisp_Object vector;
+ register EMACS_INT sizei;
+ register int index;
register struct Lisp_Vector *p;
- if (XTYPE (length) != Lisp_Int || XINT (length) < 0)
- length = wrong_type_argument (Qnatnump, length);
- sizei = XINT (length);
-
- p = (struct Lisp_Vector *) xmalloc (sizeof (struct Lisp_Vector) + (sizei - 1) * sizeof (Lisp_Object));
- VALIDATE_LISP_STORAGE (p, 0);
-
- XSET (vector, Lisp_Vector, p);
- consing_since_gc += sizeof (struct Lisp_Vector) + (sizei - 1) * sizeof (Lisp_Object);
+ CHECK_NATNUM (length, 0);
+ sizei = XFASTINT (length);
+ p = allocate_vectorlike (sizei);
p->size = sizei;
- p->next = all_vectors;
- all_vectors = p;
-
for (index = 0; index < sizei; index++)
p->contents[index] = init;
+ XSETVECTOR (vector, 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-slot' 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);
+ n = 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;
}
register int index;
register struct Lisp_Vector *p;
- XFASTINT (len) = nargs;
+ XSETFASTINT (len, nargs);
val = Fmake_vector (len, Qnil);
p = XVECTOR (val);
for (index = 0; index < nargs; index++)
register int index;
register struct Lisp_Vector *p;
- XFASTINT (len) = nargs;
+ 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);
args[index] = Fpurecopy (args[index]);
p->contents[index] = args[index];
}
- XSETTYPE (val, Lisp_Compiled);
+ XSETCOMPILED (val, val);
return val;
}
\f
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)
{
- XSET (val, Lisp_Symbol, symbol_free_list);
- symbol_free_list
- = (struct Lisp_Symbol *) XFASTINT (symbol_free_list->value);
+ XSETSYMBOL (val, symbol_free_list);
+ symbol_free_list = *(struct Lisp_Symbol **)&symbol_free_list->value;
}
else
{
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;
symbol_block_index = 0;
}
- XSET (val, Lisp_Symbol, &symbol_block->symbols[symbol_block_index++]);
+ 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
-/* Allocation of markers.
+/* Allocation of markers and other objects that share that structure.
Works like allocation of conses. */
#define MARKER_BLOCK_SIZE \
- ((1020 - sizeof (struct marker_block *)) / sizeof (struct Lisp_Marker))
+ ((1020 - sizeof (struct marker_block *)) / sizeof (union Lisp_Misc))
struct marker_block
{
struct marker_block *next;
- struct Lisp_Marker markers[MARKER_BLOCK_SIZE];
+ union Lisp_Misc markers[MARKER_BLOCK_SIZE];
};
struct marker_block *marker_block;
int marker_block_index;
-struct Lisp_Marker *marker_free_list;
+union Lisp_Misc *marker_free_list;
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;
}
-DEFUN ("make-marker", Fmake_marker, Smake_marker, 0, 0, 0,
- "Return a newly allocated marker which does not point at any place.")
- ()
+/* Return a newly allocated Lisp_Misc object, with no substructure. */
+Lisp_Object
+allocate_misc ()
{
- register Lisp_Object val;
- register struct Lisp_Marker *p;
+ Lisp_Object val;
if (marker_free_list)
{
- XSET (val, Lisp_Marker, marker_free_list);
- marker_free_list
- = (struct Lisp_Marker *) XFASTINT (marker_free_list->chain);
+ XSETMISC (val, marker_free_list);
+ marker_free_list = marker_free_list->u_free.chain;
}
else
{
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;
marker_block_index = 0;
}
- XSET (val, Lisp_Marker, &marker_block->markers[marker_block_index++]);
+ XSETMISC (val, &marker_block->markers[marker_block_index++]);
}
+ consing_since_gc += sizeof (union Lisp_Misc);
+ misc_objects_consed++;
+ return val;
+}
+
+DEFUN ("make-marker", Fmake_marker, Smake_marker, 0, 0, 0,
+ "Return a newly allocated marker which does not point at any place.")
+ ()
+{
+ register Lisp_Object val;
+ register struct Lisp_Marker *p;
+
+ val = allocate_misc ();
+ XMISCTYPE (val) = Lisp_Misc_Marker;
p = XMARKER (val);
p->buffer = 0;
p->bufpos = 0;
p->chain = Qnil;
- consing_since_gc += sizeof (struct Lisp_Marker);
+ p->insertion_type = 0;
return val;
}
\f
struct string_block_head
{
struct string_block *next, *prev;
- int pos;
+ EMACS_INT pos;
};
struct string_block
{
struct string_block *next, *prev;
- int pos;
+ EMACS_INT pos;
char chars[STRING_BLOCK_SIZE];
};
#define STRING_FULLSIZE(size) (((size) + sizeof (struct Lisp_String) + PAD) \
& ~(PAD - 1))
-#define PAD (sizeof (int))
+#define PAD (sizeof (EMACS_INT))
#if 0
#define STRING_FULLSIZE(SIZE) \
-(((SIZE) + 2 * sizeof (int)) & ~(sizeof (int) - 1))
+(((SIZE) + 2 * sizeof (EMACS_INT)) & ~(sizeof (EMACS_INT) - 1))
#endif
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;
register Lisp_Object val;
register unsigned char *p, *end, c;
- if (XTYPE (length) != Lisp_Int || XINT (length) < 0)
- length = wrong_type_argument (Qnatnump, length);
+ CHECK_NATNUM (length, 0);
CHECK_NUMBER (init, 1);
- val = make_uninit_string (XINT (length));
+ val = make_uninit_string (XFASTINT (length));
c = XINT (init);
p = XSTRING (val)->data;
end = p + XSTRING (val)->size;
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);
+
+ val = Fmake_vector (make_number (length_in_elts), 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;
if (fullsize <= STRING_BLOCK_SIZE - current_string_block->pos)
/* This string can fit in the current string block */
{
- XSET (val, Lisp_String,
- (struct Lisp_String *) (current_string_block->chars + current_string_block->pos));
+ XSETSTRING (val,
+ ((struct Lisp_String *)
+ (current_string_block->chars + current_string_block->pos)));
current_string_block->pos += fullsize;
}
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;
new->next = large_string_blocks;
large_string_blocks = new;
- XSET (val, Lisp_String,
- (struct Lisp_String *) ((struct string_block_head *)new + 1));
+ XSETSTRING (val,
+ ((struct Lisp_String *)
+ ((struct string_block_head *)new + 1)));
}
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;
new->next = 0;
current_string_block = new;
new->pos = fullsize;
- XSET (val, Lisp_String,
- (struct Lisp_String *) current_string_block->chars);
+ XSETSTRING (val,
+ (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);
/* The things that fit in a string
are characters that are in 0...127,
after discarding the meta bit and all the bits above it. */
- if (XTYPE (args[i]) != Lisp_Int
+ if (!INTEGERP (args[i])
|| (XUINT (args[i]) & ~(-CHAR_META)) >= 0200)
return Fvector (nargs, args);
/* Since the loop exited, we know that all the things in it are
characters, so we can make a string. */
{
- Lisp_Object result = Fmake_string (nargs, make_number (0));
+ Lisp_Object result;
+ result = Fmake_string (nargs, make_number (0));
for (i = 0; i < nargs; i++)
{
XSTRING (result)->data[i] = XINT (args[i]);
int length;
{
register Lisp_Object new;
- register int size = sizeof (int) + INTERVAL_PTR_SIZE + length + 1;
+ register int size = sizeof (EMACS_INT) + INTERVAL_PTR_SIZE + length + 1;
if (pureptr + size > PURESIZE)
error ("Pure Lisp storage exhausted");
- XSET (new, Lisp_String, PUREBEG + pureptr);
+ XSETSTRING (new, PUREBEG + pureptr);
XSTRING (new)->size = length;
bcopy (data, XSTRING (new)->data, length);
XSTRING (new)->data[length] = 0;
- pureptr += (size + sizeof (int) - 1)
- / sizeof (int) * sizeof (int);
+
+ /* We must give strings in pure storage some kind of interval. So we
+ give them a null one. */
+#if defined (USE_TEXT_PROPERTIES)
+ XSTRING (new)->intervals = NULL_INTERVAL;
+#endif
+ pureptr += (size + sizeof (EMACS_INT) - 1)
+ / sizeof (EMACS_INT) * sizeof (EMACS_INT);
return new;
}
if (pureptr + sizeof (struct Lisp_Cons) > PURESIZE)
error ("Pure Lisp storage exhausted");
- XSET (new, Lisp_Cons, PUREBEG + pureptr);
+ XSETCONS (new, PUREBEG + pureptr);
pureptr += sizeof (struct Lisp_Cons);
XCONS (new)->car = Fpurecopy (car);
XCONS (new)->cdr = Fpurecopy (cdr);
if (pureptr + sizeof (struct Lisp_Float) > PURESIZE)
error ("Pure Lisp storage exhausted");
- XSET (new, Lisp_Float, PUREBEG + pureptr);
+ XSETFLOAT (new, PUREBEG + pureptr);
pureptr += sizeof (struct Lisp_Float);
XFLOAT (new)->data = num;
- XFLOAT (new)->type = 0; /* bug chasing -wsr */
+ XSETFASTINT (XFLOAT (new)->type, 0); /* bug chasing -wsr */
return new;
}
Lisp_Object
make_pure_vector (len)
- int len;
+ EMACS_INT len;
{
register Lisp_Object new;
- register int size = sizeof (struct Lisp_Vector) + (len - 1) * sizeof (Lisp_Object);
+ register EMACS_INT size = sizeof (struct Lisp_Vector) + (len - 1) * sizeof (Lisp_Object);
if (pureptr + size > PURESIZE)
error ("Pure Lisp storage exhausted");
- XSET (new, Lisp_Vector, PUREBEG + pureptr);
+ XSETVECTOR (new, PUREBEG + pureptr);
pureptr += size;
XVECTOR (new)->size = len;
return new;
(obj)
register Lisp_Object obj;
{
- register Lisp_Object new, tem;
- register int i;
-
if (NILP (Vpurify_flag))
return obj;
&& (PNTR_COMPARISON_TYPE) XPNTR (obj) >= (PNTR_COMPARISON_TYPE) pure)
return obj;
-#ifdef SWITCH_ENUM_BUG
- switch ((int) XTYPE (obj))
-#else
- switch (XTYPE (obj))
-#endif
- {
- case Lisp_Marker:
- error ("Attempt to copy a marker to pure storage");
-
- case Lisp_Cons:
- return pure_cons (XCONS (obj)->car, XCONS (obj)->cdr);
-
+ if (CONSP (obj))
+ return pure_cons (XCONS (obj)->car, XCONS (obj)->cdr);
#ifdef LISP_FLOAT_TYPE
- case Lisp_Float:
- return make_pure_float (XFLOAT (obj)->data);
+ else if (FLOATP (obj))
+ return make_pure_float (XFLOAT (obj)->data);
#endif /* LISP_FLOAT_TYPE */
-
- case Lisp_String:
- return make_pure_string (XSTRING (obj)->data, XSTRING (obj)->size);
-
- case Lisp_Compiled:
- case Lisp_Vector:
- new = make_pure_vector (XVECTOR (obj)->size);
- for (i = 0; i < XVECTOR (obj)->size; i++)
- {
- tem = XVECTOR (obj)->contents[i];
- XVECTOR (new)->contents[i] = Fpurecopy (tem);
- }
- XSETTYPE (new, XTYPE (obj));
- return new;
-
- default:
+ else if (STRINGP (obj))
+ return make_pure_string (XSTRING (obj)->data, XSTRING (obj)->size);
+ else if (COMPILEDP (obj) || VECTORP (obj))
+ {
+ register struct Lisp_Vector *vec;
+ register int i, size;
+
+ size = XVECTOR (obj)->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))
+ XSETCOMPILED (obj, vec);
+ else
+ XSETVECTOR (obj, vec);
return obj;
}
+ else if (MARKERP (obj))
+ error ("Attempt to copy a marker to pure storage");
+ else
+ return obj;
}
\f
/* Recording what needs to be marked for gc. */
struct gcpro *gcprolist;
-#define NSTATICS 512
+#define NSTATICS 768
Lisp_Object *staticvec[NSTATICS] = {0};
/* if nargs is UNEVALLED, args points to slot holding list of unevalled args */
char evalargs;
};
-
-/* Two flags that are set during GC in the `size' component
- of a string or vector. On some machines, these flags
- are defined by the m- file to be different bits. */
-
-/* On vector, means it has been marked.
- On string size field or a reference to a string,
- means not the last reference in the chain. */
-
-#ifndef ARRAY_MARK_FLAG
-#define ARRAY_MARK_FLAG ((MARKBIT >> 1) & ~MARKBIT)
-#endif /* no ARRAY_MARK_FLAG */
-
-/* Any slot that is a Lisp_Object can point to a string
- and thus can be put on a string's reference-chain
- and thus may need to have its ARRAY_MARK_FLAG set.
- This includes the slots whose markbits are used to mark
- the containing objects. */
-
-#if ARRAY_MARK_FLAG == MARKBIT
-you lose
-#endif
\f
/* Garbage collection! */
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.")
()
register struct backtrace *backlist;
register Lisp_Object tem;
char *omessage = echo_area_glyphs;
+ int omessage_length = echo_area_glyphs_length;
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))
stack_copy = (char *) xrealloc (stack_copy, (stack_copy_size = i));
if (stack_copy)
{
- if ((int) (&stack_top_variable - stack_bottom) > 0)
+ if ((EMACS_INT) (&stack_top_variable - stack_bottom) > 0)
bcopy (stack_bottom, stack_copy, i);
else
bcopy (&stack_top_variable, stack_copy, i);
}
#endif /* MAX_SAVE_STACK > 0 */
- if (!noninteractive)
- message1 ("Garbage collecting...");
+ if (garbage_collection_messages)
+ message1_nolog ("Garbage collecting...");
/* Don't keep command history around forever */
tem = Fnthcdr (make_number (30), Vcommand_history);
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)
- message1 (omessage);
- else if (!noninteractive)
- message1 ("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++)
- XUNMARK (sblk->markers[i].chain);
+ 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;
-#ifdef DEBUG_MOLE
- if (*(int *) ((char *)__builtin_frame_address (0) - 16) == 0)
- abort ();
-#endif
-
+ loop:
obj = *objptr;
+ loop2:
XUNMARK (obj);
- loop:
-
if ((PNTR_COMPARISON_TYPE) XPNTR (obj) < (PNTR_COMPARISON_TYPE) ((char *) pure + PURESIZE)
&& (PNTR_COMPARISON_TYPE) XPNTR (obj) >= (PNTR_COMPARISON_TYPE) pure)
return;
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))
{
- XFASTINT (*objptr) = ptr->size;
+ XSETFASTINT (*objptr, ptr->size);
XMARK (*objptr);
}
else
- XFASTINT (*objptr) = ptr->size;
- if ((int)objptr & 1) abort ();
- ptr->size = (int) objptr & ~MARKBIT;
- if ((int) objptr & MARKBIT)
- ptr->size ++;
- }
- }
- break;
-
- case Lisp_Vector:
- case Lisp_Window:
- case Lisp_Process:
- case Lisp_Window_Configuration:
- {
- register struct Lisp_Vector *ptr = XVECTOR (obj);
- register int size = ptr->size;
- struct Lisp_Vector *volatile ptr1 = ptr;
- register int i;
+ XSETFASTINT (*objptr, ptr->size);
- if (size & ARRAY_MARK_FLAG) break; /* Already marked */
- ptr->size |= ARRAY_MARK_FLAG; /* Else mark it */
- for (i = 0; i < size; i++) /* and then mark its elements */
- {
- if (ptr != ptr1)
+ if ((EMACS_INT) objptr & DONT_COPY_FLAG)
abort ();
- mark_object (&ptr->contents[i]);
+ ptr->size = (EMACS_INT) objptr;
+ if (ptr->size & MARKBIT)
+ ptr->size ^= MARKBIT | DONT_COPY_FLAG;
}
}
break;
- case Lisp_Compiled:
- /* We could treat this just like a vector, but it is better
- to save the COMPILED_CONSTANTS element for last and avoid recursion
- there. */
- {
- register struct Lisp_Vector *ptr = XVECTOR (obj);
- register int size = ptr->size;
- struct Lisp_Vector *volatile ptr1 = ptr;
- register int i;
-
- if (size & ARRAY_MARK_FLAG) break; /* Already marked */
- ptr->size |= ARRAY_MARK_FLAG; /* Else mark it */
- for (i = 0; i < size; i++) /* and then mark its elements */
- {
- if (ptr != ptr1)
- abort ();
- if (i != COMPILED_CONSTANTS)
- mark_object (&ptr->contents[i]);
- }
- objptr = &ptr->contents[COMPILED_CONSTANTS];
- obj = *objptr;
- goto loop;
- }
-
-#ifdef MULTI_FRAME
- case Lisp_Frame:
- {
- register struct frame *ptr = XFRAME (obj);
- register int size = ptr->size;
-
- if (size & ARRAY_MARK_FLAG) break; /* Already marked */
- ptr->size |= ARRAY_MARK_FLAG; /* Else mark it */
+ case Lisp_Vectorlike:
+ if (GC_BUFFERP (obj))
+ {
+ if (!XMARKBIT (XBUFFER (obj)->name))
+ mark_buffer (obj);
+ }
+ else if (GC_SUBRP (obj))
+ break;
+ else if (GC_COMPILEDP (obj))
+ /* We could treat this just like a vector, but it is better
+ to save the COMPILED_CONSTANTS element for last and avoid recursion
+ there. */
+ {
+ register struct Lisp_Vector *ptr = XVECTOR (obj);
+ register EMACS_INT size = ptr->size;
+ /* See comment above under Lisp_Vector. */
+ struct Lisp_Vector *volatile ptr1 = ptr;
+ register int i;
+
+ if (size & ARRAY_MARK_FLAG)
+ break; /* Already marked */
+ ptr->size |= ARRAY_MARK_FLAG; /* Else mark it */
+ size &= PSEUDOVECTOR_SIZE_MASK;
+ for (i = 0; i < size; i++) /* and then mark its elements */
+ {
+ if (i != COMPILED_CONSTANTS)
+ mark_object (&ptr1->contents[i]);
+ }
+ /* This cast should be unnecessary, but some Mips compiler complains
+ (MIPS-ABI + SysVR4, DC/OSx, etc). */
+ objptr = (Lisp_Object *) &ptr1->contents[COMPILED_CONSTANTS];
+ goto loop;
+ }
+ else if (GC_FRAMEP (obj))
+ {
+ /* See comment above under Lisp_Vector for why this is volatile. */
+ register struct frame *volatile ptr = XFRAME (obj);
+ register EMACS_INT size = ptr->size;
+
+ if (size & ARRAY_MARK_FLAG) break; /* Already marked */
+ 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->param_alist);
+ mark_object (&ptr->scroll_bars);
+ mark_object (&ptr->condemned_scroll_bars);
+ mark_object (&ptr->menu_bar_items);
+ mark_object (&ptr->face_alist);
+ mark_object (&ptr->menu_bar_vector);
+ mark_object (&ptr->buffer_predicate);
+ }
+ else if (GC_BOOL_VECTOR_P (obj))
+ {
+ register struct Lisp_Vector *ptr = XVECTOR (obj);
- mark_object (&ptr->name);
- mark_object (&ptr->focus_frame);
- mark_object (&ptr->width);
- mark_object (&ptr->height);
- mark_object (&ptr->selected_window);
- mark_object (&ptr->minibuffer_window);
- mark_object (&ptr->param_alist);
- mark_object (&ptr->scroll_bars);
- mark_object (&ptr->condemned_scroll_bars);
- mark_object (&ptr->menu_bar_items);
- mark_object (&ptr->face_alist);
- }
+ if (ptr->size & ARRAY_MARK_FLAG)
+ break; /* Already marked */
+ ptr->size |= ARRAY_MARK_FLAG; /* Else mark it */
+ }
+ else
+ {
+ register struct Lisp_Vector *ptr = XVECTOR (obj);
+ register EMACS_INT size = ptr->size;
+ /* The reason we use ptr1 is to avoid an apparent hardware bug
+ that happens occasionally on the FSF's HP 300s.
+ The bug is that a2 gets clobbered by recursive calls to mark_object.
+ The clobberage seems to happen during function entry,
+ perhaps in the moveml instruction.
+ Yes, this is a crock, but we have to do it. */
+ struct Lisp_Vector *volatile ptr1 = ptr;
+ register int i;
+
+ if (size & ARRAY_MARK_FLAG) break; /* Already marked */
+ ptr->size |= ARRAY_MARK_FLAG; /* Else mark it */
+ if (size & PSEUDOVECTOR_FLAG)
+ size &= PSEUDOVECTOR_SIZE_MASK;
+ for (i = 0; i < size; i++) /* and then mark its elements */
+ mark_object (&ptr1->contents[i]);
+ }
break;
-#endif /* MULTI_FRAME */
case Lisp_Symbol:
{
- register struct Lisp_Symbol *ptr = XSYMBOL (obj);
+ /* See comment above under Lisp_Vector for why this is volatile. */
+ register struct Lisp_Symbol *volatile ptr = XSYMBOL (obj);
struct Lisp_Symbol *ptrx;
if (XMARKBIT (ptr->plist)) break;
XMARK (ptr->plist);
mark_object ((Lisp_Object *) &ptr->value);
- if ((unsigned int) ptr <= 4)
- abort ();
mark_object (&ptr->function);
- if ((unsigned int) ptr <= 4)
- abort ();
mark_object (&ptr->plist);
- if ((unsigned int) ptr <= 4)
- abort ();
XSETTYPE (*(Lisp_Object *) &ptr->name, Lisp_String);
mark_object (&ptr->name);
- if ((unsigned int) ptr <= 4)
- abort ();
ptr = ptr->next;
if (ptr)
{
+ /* For the benefit of the last_marked log. */
+ objptr = (Lisp_Object *)&XSYMBOL (obj)->next;
ptrx = ptr; /* Use of ptrx avoids compiler bug on Sun */
XSETSYMBOL (obj, ptrx);
- goto loop;
+ /* We can't goto loop here because *objptr doesn't contain an
+ actual Lisp_Object with valid datatype field. */
+ goto loop2;
}
}
break;
- case Lisp_Marker:
- XMARK (XMARKER (obj)->chain);
- /* DO NOT mark thru the marker's chain.
- The buffer's markers chain does not preserve markers from gc;
- instead, markers are removed from the chain when freed by gc. */
+ case Lisp_Misc:
+ switch (XMISCTYPE (obj))
+ {
+ case Lisp_Misc_Marker:
+ XMARK (XMARKER (obj)->chain);
+ /* DO NOT mark thru the marker's chain.
+ The buffer's markers chain does not preserve markers from gc;
+ instead, markers are removed from the chain when freed by gc. */
+ break;
+
+ case Lisp_Misc_Buffer_Local_Value:
+ case Lisp_Misc_Some_Buffer_Local_Value:
+ {
+ register struct Lisp_Buffer_Local_Value *ptr
+ = XBUFFER_LOCAL_VALUE (obj);
+ if (XMARKBIT (ptr->car)) break;
+ XMARK (ptr->car);
+ /* If the cdr is nil, avoid recursion for the car. */
+ if (EQ (ptr->cdr, Qnil))
+ {
+ objptr = &ptr->car;
+ goto loop;
+ }
+ mark_object (&ptr->car);
+ /* See comment above under Lisp_Vector for why not use ptr here. */
+ objptr = &XBUFFER_LOCAL_VALUE (obj)->cdr;
+ goto loop;
+ }
+
+ case Lisp_Misc_Intfwd:
+ 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
+ are protected with staticpro. */
+ break;
+
+ case Lisp_Misc_Overlay:
+ {
+ struct Lisp_Overlay *ptr = XOVERLAY (obj);
+ if (!XMARKBIT (ptr->plist))
+ {
+ XMARK (ptr->plist);
+ mark_object (&ptr->start);
+ mark_object (&ptr->end);
+ objptr = &ptr->plist;
+ goto loop;
+ }
+ }
+ break;
+
+ default:
+ abort ();
+ }
break;
case Lisp_Cons:
- case Lisp_Buffer_Local_Value:
- case Lisp_Some_Buffer_Local_Value:
- case Lisp_Overlay:
{
register struct Lisp_Cons *ptr = XCONS (obj);
if (XMARKBIT (ptr->car)) break;
if (EQ (ptr->cdr, Qnil))
{
objptr = &ptr->car;
- obj = ptr->car;
- XUNMARK (obj);
goto loop;
}
- if (ptr == 0)
- abort ();
mark_object (&ptr->car);
- if (ptr == 0)
- abort ();
- objptr = &ptr->cdr;
- obj = ptr->cdr;
+ /* See comment above under Lisp_Vector for why not use ptr here. */
+ objptr = &XCONS (obj)->cdr;
goto loop;
}
break;
#endif /* LISP_FLOAT_TYPE */
- case Lisp_Buffer:
- if (!XMARKBIT (XBUFFER (obj)->name))
- mark_buffer (obj);
- break;
-
case Lisp_Int:
- case Lisp_Void:
- case Lisp_Subr:
- case Lisp_Intfwd:
- case Lisp_Boolfwd:
- case Lisp_Objfwd:
- case Lisp_Buffer_Objfwd:
- case Lisp_Internal_Stream:
- /* 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
- are protected with staticpro. */
break;
default:
{
register struct buffer *buffer = XBUFFER (buf);
register Lisp_Object *ptr;
+ Lisp_Object base_buffer;
/* This is the buffer's markbit */
mark_object (&buffer->name);
XMARK (buffer->name);
- MARK_INTERVAL_TREE (buffer->intervals);
+ MARK_INTERVAL_TREE (BUF_INTERVALS (buffer));
#if 0
mark_object (buffer->syntax_table);
Since the strings may be relocated, we must mark them
in their actual slots. So gc_sweep must convert each slot
back to an ordinary C pointer. */
- XSET (*(Lisp_Object *)&buffer->upcase_table,
- Lisp_String, buffer->upcase_table);
+ XSETSTRING (*(Lisp_Object *)&buffer->upcase_table, buffer->upcase_table);
mark_object ((Lisp_Object *)&buffer->upcase_table);
- XSET (*(Lisp_Object *)&buffer->downcase_table,
- Lisp_String, buffer->downcase_table);
+ XSETSTRING (*(Lisp_Object *)&buffer->downcase_table, buffer->downcase_table);
mark_object ((Lisp_Object *)&buffer->downcase_table);
- XSET (*(Lisp_Object *)&buffer->sort_table,
- Lisp_String, buffer->sort_table);
+ XSETSTRING (*(Lisp_Object *)&buffer->sort_table, buffer->sort_table);
mark_object ((Lisp_Object *)&buffer->sort_table);
- XSET (*(Lisp_Object *)&buffer->folding_sort_table,
- Lisp_String, buffer->folding_sort_table);
+ XSETSTRING (*(Lisp_Object *)&buffer->folding_sort_table, buffer->folding_sort_table);
mark_object ((Lisp_Object *)&buffer->folding_sort_table);
#endif
(char *)ptr < (char *)buffer + sizeof (struct buffer);
ptr++)
mark_object (ptr);
+
+ /* If this is an indirect buffer, mark its base buffer. */
+ if (buffer->base_buffer && !XMARKBIT (buffer->base_buffer->name))
+ {
+ XSETBUFFER (base_buffer, buffer->base_buffer);
+ 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. */
for (i = 0; i < lim; i++)
if (!XMARKBIT (cblk->conses[i].car))
{
- XFASTINT (cblk->conses[i].car) = (int) cons_free_list;
num_free++;
+ *(struct Lisp_Cons **)&cblk->conses[i].car = cons_free_list;
cons_free_list = &cblk->conses[i];
}
else
for (i = 0; i < lim; i++)
if (!XMARKBIT (fblk->floats[i].type))
{
- XFASTINT (fblk->floats[i].type) = (int) float_free_list;
num_free++;
+ *(struct Lisp_Float **)&fblk->floats[i].type = float_free_list;
float_free_list = &fblk->floats[i];
}
else
for (i = 0; i < lim; i++)
if (!XMARKBIT (sblk->symbols[i].plist))
{
- XFASTINT (sblk->symbols[i].value) = (int) symbol_free_list;
+ *(struct Lisp_Symbol **)&sblk->symbols[i].value = symbol_free_list;
symbol_free_list = &sblk->symbols[i];
num_free++;
}
#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;
- struct Lisp_Marker *tem1;
register int lim = marker_block_index;
register int num_free = 0, num_used = 0;
for (mblk = marker_block; mblk; mblk = mblk->next)
{
register int i;
+ EMACS_INT already_free = -1;
+
for (i = 0; i < lim; i++)
- if (!XMARKBIT (mblk->markers[i].chain))
- {
- Lisp_Object tem;
- tem1 = &mblk->markers[i]; /* tem1 avoids Sun compiler bug */
- XSET (tem, Lisp_Marker, tem1);
- unchain_marker (tem);
- XFASTINT (mblk->markers[i].chain) = (int) marker_free_list;
- marker_free_list = &mblk->markers[i];
- num_free++;
- }
- else
- {
- num_used++;
- XUNMARK (mblk->markers[i].chain);
- }
+ {
+ Lisp_Object *markword;
+ switch (mblk->markers[i].u_marker.type)
+ {
+ case Lisp_Misc_Marker:
+ markword = &mblk->markers[i].u_marker.chain;
+ break;
+ case Lisp_Misc_Buffer_Local_Value:
+ case Lisp_Misc_Some_Buffer_Local_Value:
+ markword = &mblk->markers[i].u_buffer_local_value.car;
+ break;
+ 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].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);
+ }
+ /* 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].u_marker.type = Lisp_Misc_Free;
+ mblk->markers[i].u_free.chain = marker_free_list;
+ marker_free_list = &mblk->markers[i];
+ num_free++;
+ }
+ else
+ {
+ num_used++;
+ if (markword)
+ XUNMARK (*markword);
+ }
+ }
lim = MARKER_BLOCK_SIZE;
}
else
{
XUNMARK (buffer->name);
- UNMARK_BALANCE_INTERVALS (buffer->intervals);
+ UNMARK_BALANCE_INTERVALS (BUF_INTERVALS (buffer));
#if 0
/* Each `struct Lisp_String *' was turned into a Lisp_Object
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;
}
}
/* Free all "large strings" not marked with ARRAY_MARK_FLAG. */
{
register struct string_block *sb = large_string_blocks, *prev = 0, *next;
+ struct Lisp_String *s;
while (sb)
- if (!(((struct Lisp_String *)(&sb->chars[0]))->size & ARRAY_MARK_FLAG))
- {
- if (prev)
- prev->next = sb->next;
- else
- large_string_blocks = sb->next;
- next = sb->next;
- xfree (sb);
- sb = next;
- }
- else
- {
- ((struct Lisp_String *)(&sb->chars[0]))->size
- &= ~ARRAY_MARK_FLAG & ~MARKBIT;
- total_string_size += ((struct Lisp_String *)(&sb->chars[0]))->size;
- prev = sb, sb = sb->next;
- }
+ {
+ s = (struct Lisp_String *) &sb->chars[0];
+ if (s->size & ARRAY_MARK_FLAG)
+ {
+ ((struct Lisp_String *)(&sb->chars[0]))->size
+ &= ~ARRAY_MARK_FLAG & ~MARKBIT;
+ UNMARK_BALANCE_INTERVALS (s->intervals);
+ total_string_size += ((struct Lisp_String *)(&sb->chars[0]))->size;
+ prev = sb, sb = sb->next;
+ }
+ else
+ {
+ if (prev)
+ prev->next = sb->next;
+ else
+ large_string_blocks = sb->next;
+ next = sb->next;
+ xfree (sb);
+ sb = next;
+ }
+ }
}
}
\f
= (struct Lisp_String *) &from_sb->chars[pos];
register struct Lisp_String *newaddr;
- register int size = nextstr->size;
+ register EMACS_INT size = nextstr->size;
/* NEXTSTR is the old address of the next string.
Just skip it if it isn't marked. */
- if ((unsigned) size > STRING_BLOCK_SIZE)
+ if (((EMACS_UINT) size & ~DONT_COPY_FLAG) > STRING_BLOCK_SIZE)
{
/* It is marked, so its size field is really a chain of refs.
Find the end of the chain, where the actual size lives. */
- while ((unsigned) size > STRING_BLOCK_SIZE)
+ while (((EMACS_UINT) size & ~DONT_COPY_FLAG) > STRING_BLOCK_SIZE)
{
- if (size & 1) size ^= MARKBIT | 1;
- size = *(int *)size & ~MARKBIT;
+ if (size & DONT_COPY_FLAG)
+ size ^= MARKBIT | DONT_COPY_FLAG;
+ size = *(EMACS_INT *)size & ~MARKBIT;
}
total_string_size += size;
/* Copy the string itself to the new place. */
if (nextstr != newaddr)
- bcopy (nextstr, newaddr, size + 1 + sizeof (int)
+ bcopy (nextstr, newaddr, size + 1 + sizeof (EMACS_INT)
+ INTERVAL_PTR_SIZE);
/* Go through NEXTSTR's chain of references
and make each slot in the chain point to
the new address of this string. */
size = newaddr->size;
- while ((unsigned) size > STRING_BLOCK_SIZE)
+ while (((EMACS_UINT) size & ~DONT_COPY_FLAG) > STRING_BLOCK_SIZE)
{
register Lisp_Object *objptr;
- if (size & 1) size ^= MARKBIT | 1;
+ if (size & DONT_COPY_FLAG)
+ size ^= MARKBIT | DONT_COPY_FLAG;
objptr = (Lisp_Object *)size;
size = XFASTINT (*objptr) & ~MARKBIT;
if (XMARKBIT (*objptr))
{
- XSET (*objptr, Lisp_String, newaddr);
+ XSETSTRING (*objptr, newaddr);
XMARK (*objptr);
}
else
- XSET (*objptr, Lisp_String, newaddr);
+ XSETSTRING (*objptr, newaddr);
}
/* Store the actual size in the size field. */
newaddr->size = size;
+
+#ifdef USE_TEXT_PROPERTIES
+ /* Now that the string has been relocated, rebalance its
+ interval tree, and update the tree's parent pointer. */
+ if (! NULL_INTERVAL_P (newaddr->intervals))
+ {
+ UNMARK_BALANCE_INTERVALS (newaddr->intervals);
+ XSETSTRING (* (Lisp_Object *) &newaddr->intervals->parent,
+ newaddr);
+ }
+#endif /* USE_TEXT_PROPERTIES */
}
pos += STRING_FULLSIZE (size);
}
\f
/* Debugging aids. */
-DEFUN ("memory-limit", Fmemory_limit, Smemory_limit, 0, 0, "",
+DEFUN ("memory-limit", Fmemory_limit, Smemory_limit, 0, 0, 0,
"Return the address of the last byte Emacs has allocated, divided by 1024.\n\
This may be helpful in debugging Emacs's memory usage.\n\
We divide the value by 1024 to make sure it fits in a Lisp integer.")
{
Lisp_Object end;
- XSET (end, Lisp_Int, (int) sbrk (0) / 1024);
+ XSETINT (end, (EMACS_INT) sbrk (0) / 1024);
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--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);
}