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Shrink Lisp_Sub_Char_Table by preferring C integers to Lisp_Objects.

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* lisp.h (struct Lisp_Sub_Char_Table): Use C integers for depth and
min_char slots.  Adjust comment.
(enum char_table_specials): Rename from CHAR_TABLE_STANDARD_SLOTS.
Add SUB_CHAR_TABLE_OFFSET member.
(make_uninit_sub_char_table): New function.
* alloc.c (mark_char_table): Add extra argument to denote char table
subtype.  Adjust to match new layout of sub char-table.
(mark_object): Always mark sub char-tables with mark_char_table.
* chartab.c (make_sub_char_table, copy_sub_char_table)
(sub_char_table_ref, sub_char_table_ref_and_range, sub_char_table_set)
(sub_char_table_set_range, optimize_sub_char_table, map_sub_char_table)
(map_sub_char_table_for_charset, uniprop_table_uncompress):
All related users changed.
* lread.c (read1): Adjust to match new layout of sub char-table.
This commit is contained in:
Dmitry Antipov 2014-07-02 07:26:19 +04:00
parent 1dc6f7e738
commit 477daa5b53
6 changed files with 103 additions and 60 deletions
Download patch file Download diff file Expand all files Collapse all files

18
src/ChangeLog
View file

@ -1,3 +1,21 @@
2014-07-02 Dmitry Antipov <dmantipov@yandex.ru>
Shrink Lisp_Sub_Char_Table by preferring C integers to Lisp_Objects.
* lisp.h (struct Lisp_Sub_Char_Table): Use C integers for depth and
min_char slots. Adjust comment.
(enum char_table_specials): Rename from CHAR_TABLE_STANDARD_SLOTS.
Add SUB_CHAR_TABLE_OFFSET member.
(make_uninit_sub_char_table): New function.
* alloc.c (mark_char_table): Add extra argument to denote char table
subtype. Adjust to match new layout of sub char-table.
(mark_object): Always mark sub char-tables with mark_char_table.
* chartab.c (make_sub_char_table, copy_sub_char_table)
(sub_char_table_ref, sub_char_table_ref_and_range, sub_char_table_set)
(sub_char_table_set_range, optimize_sub_char_table, map_sub_char_table)
(map_sub_char_table_for_charset, uniprop_table_uncompress):
All related users changed.
* lread.c (read1): Adjust to match new layout of sub char-table.
2014-07-02 Stefan Monnier <monnier@iro.umontreal.ca>
* keymap.c (get_keyelt): Simplify.

14
src/alloc.c
View file

@ -5958,14 +5958,15 @@ mark_vectorlike (struct Lisp_Vector *ptr)
symbols. */
static void
mark_char_table (struct Lisp_Vector *ptr)
mark_char_table (struct Lisp_Vector *ptr, enum pvec_type pvectype)
{
int size = ptr->header.size & PSEUDOVECTOR_SIZE_MASK;
int i;
/* Consult the Lisp_Sub_Char_Table layout before changing this. */
int i, idx = (pvectype == PVEC_SUB_CHAR_TABLE ? SUB_CHAR_TABLE_OFFSET : 0);
eassert (!VECTOR_MARKED_P (ptr));
VECTOR_MARK (ptr);
for (i = 0; i < size; i++)
for (i = idx; i < size; i++)
{
Lisp_Object val = ptr->contents[i];
@ -5974,7 +5975,7 @@ mark_char_table (struct Lisp_Vector *ptr)
if (SUB_CHAR_TABLE_P (val))
{
if (! VECTOR_MARKED_P (XVECTOR (val)))
mark_char_table (XVECTOR (val));
mark_char_table (XVECTOR (val), PVEC_SUB_CHAR_TABLE);
}
else
mark_object (val);
@ -6320,7 +6321,8 @@ mark_object (Lisp_Object arg)
break;
case PVEC_CHAR_TABLE:
mark_char_table (ptr);
case PVEC_SUB_CHAR_TABLE:
mark_char_table (ptr, (enum pvec_type) pvectype);
break;
case PVEC_BOOL_VECTOR:
@ -7218,7 +7220,7 @@ The time is in seconds as a floating point value. */);
union
{
enum CHARTAB_SIZE_BITS CHARTAB_SIZE_BITS;
enum CHAR_TABLE_STANDARD_SLOTS CHAR_TABLE_STANDARD_SLOTS;
enum char_table_specials char_table_specials;
enum char_bits char_bits;
enum CHECK_LISP_OBJECT_TYPE CHECK_LISP_OBJECT_TYPE;
enum DEFAULT_HASH_SIZE DEFAULT_HASH_SIZE;

47
src/chartab.c
View file

@ -140,15 +140,11 @@ the char-table has no extra slot. */)
static Lisp_Object
make_sub_char_table (int depth, int min_char, Lisp_Object defalt)
{
Lisp_Object table;
int size = (PSEUDOVECSIZE (struct Lisp_Sub_Char_Table, contents)
+ chartab_size[depth]);
table = Fmake_vector (make_number (size), defalt);
XSETPVECTYPE (XVECTOR (table), PVEC_SUB_CHAR_TABLE);
XSUB_CHAR_TABLE (table)->depth = make_number (depth);
XSUB_CHAR_TABLE (table)->min_char = make_number (min_char);
int i;
Lisp_Object table = make_uninit_sub_char_table (depth, min_char);
for (i = 0; i < chartab_size[depth]; i++)
XSUB_CHAR_TABLE (table)->contents[i] = defalt;
return table;
}
@ -172,8 +168,8 @@ char_table_ascii (Lisp_Object table)
static Lisp_Object
copy_sub_char_table (Lisp_Object table)
{
int depth = XINT (XSUB_CHAR_TABLE (table)->depth);
int min_char = XINT (XSUB_CHAR_TABLE (table)->min_char);
int depth = XSUB_CHAR_TABLE (table)->depth;
int min_char = XSUB_CHAR_TABLE (table)->min_char;
Lisp_Object copy = make_sub_char_table (depth, min_char, Qnil);
int i;
@ -220,10 +216,8 @@ static Lisp_Object
sub_char_table_ref (Lisp_Object table, int c, bool is_uniprop)
{
struct Lisp_Sub_Char_Table *tbl = XSUB_CHAR_TABLE (table);
int depth = XINT (tbl->depth);
int min_char = XINT (tbl->min_char);
Lisp_Object val;
int idx = CHARTAB_IDX (c, depth, min_char);
int idx = CHARTAB_IDX (c, tbl->depth, tbl->min_char);
val = tbl->contents[idx];
if (is_uniprop && UNIPROP_COMPRESSED_FORM_P (val))
@ -265,8 +259,7 @@ sub_char_table_ref_and_range (Lisp_Object table, int c, int *from, int *to,
Lisp_Object defalt, bool is_uniprop)
{
struct Lisp_Sub_Char_Table *tbl = XSUB_CHAR_TABLE (table);
int depth = XINT (tbl->depth);
int min_char = XINT (tbl->min_char);
int depth = tbl->depth, min_char = tbl->min_char;
int chartab_idx = CHARTAB_IDX (c, depth, min_char), idx;
Lisp_Object val;
@ -402,8 +395,7 @@ static void
sub_char_table_set (Lisp_Object table, int c, Lisp_Object val, bool is_uniprop)
{
struct Lisp_Sub_Char_Table *tbl = XSUB_CHAR_TABLE (table);
int depth = XINT ((tbl)->depth);
int min_char = XINT ((tbl)->min_char);
int depth = tbl->depth, min_char = tbl->min_char;
int i = CHARTAB_IDX (c, depth, min_char);
Lisp_Object sub;
@ -458,8 +450,7 @@ sub_char_table_set_range (Lisp_Object table, int from, int to, Lisp_Object val,
bool is_uniprop)
{
struct Lisp_Sub_Char_Table *tbl = XSUB_CHAR_TABLE (table);
int depth = XINT ((tbl)->depth);
int min_char = XINT ((tbl)->min_char);
int depth = tbl->depth, min_char = tbl->min_char;
int chars_in_block = chartab_chars[depth];
int i, c, lim = chartab_size[depth];
@ -689,9 +680,8 @@ static Lisp_Object
optimize_sub_char_table (Lisp_Object table, Lisp_Object test)
{
struct Lisp_Sub_Char_Table *tbl = XSUB_CHAR_TABLE (table);
int depth = XINT (tbl->depth);
int i, depth = tbl->depth;
Lisp_Object elt, this;
int i;
bool optimizable;
elt = XSUB_CHAR_TABLE (table)->contents[0];
@ -778,8 +768,8 @@ map_sub_char_table (void (*c_function) (Lisp_Object, Lisp_Object, Lisp_Object),
{
struct Lisp_Sub_Char_Table *tbl = XSUB_CHAR_TABLE (table);
depth = XINT (tbl->depth);
min_char = XINT (tbl->min_char);
depth = tbl->depth;
min_char = tbl->min_char;
max_char = min_char + chartab_chars[depth - 1] - 1;
}
else
@ -973,12 +963,10 @@ map_sub_char_table_for_charset (void (*c_function) (Lisp_Object, Lisp_Object),
unsigned from, unsigned to)
{
struct Lisp_Sub_Char_Table *tbl = XSUB_CHAR_TABLE (table);
int depth = XINT (tbl->depth);
int c, i;
int i, c = tbl->min_char, depth = tbl->depth;
if (depth < 3)
for (i = 0, c = XINT (tbl->min_char); i < chartab_size[depth];
i++, c += chartab_chars[depth])
for (i = 0; i < chartab_size[depth]; i++, c += chartab_chars[depth])
{
Lisp_Object this;
@ -1000,7 +988,7 @@ map_sub_char_table_for_charset (void (*c_function) (Lisp_Object, Lisp_Object),
}
}
else
for (i = 0, c = XINT (tbl->min_char); i < chartab_size[depth]; i++, c ++)
for (i = 0; i < chartab_size[depth]; i++, c++)
{
Lisp_Object this;
unsigned code;
@ -1147,8 +1135,7 @@ static Lisp_Object
uniprop_table_uncompress (Lisp_Object table, int idx)
{
Lisp_Object val = XSUB_CHAR_TABLE (table)->contents[idx];
int min_char = (XINT (XSUB_CHAR_TABLE (table)->min_char)
+ chartab_chars[2] * idx);
int min_char = XSUB_CHAR_TABLE (table)->min_char + chartab_chars[2] * idx;
Lisp_Object sub = make_sub_char_table (3, min_char, Qnil);
const unsigned char *p, *pend;

41
src/lisp.h
View file

@ -1407,10 +1407,11 @@ gc_aset (Lisp_Object array, ptrdiff_t idx, Lisp_Object val)
sense to handle a char-table with type struct Lisp_Vector. An
element of a char table can be any Lisp objects, but if it is a sub
char-table, we treat it a table that contains information of a
specific range of characters. A sub char-table has the same
structure as a vector. A sub char table appears only in an element
of a char-table, and there's no way to access it directly from
Emacs Lisp program. */
specific range of characters. A sub char-table is like a vector but
with two integer fields between the header and Lisp data, which means
that it has to be marked with some precautions (see mark_char_table
in alloc.c). A sub char-table appears only in an element of a char-table,
and there's no way to access it directly from Emacs Lisp program. */
enum CHARTAB_SIZE_BITS
{
@ -1465,10 +1466,10 @@ struct Lisp_Sub_Char_Table
contains 32 elements, and each element covers 128 characters. A
sub char-table of depth 3 contains 128 elements, and each element
is for one character. */
Lisp_Object depth;
int depth;
/* Minimum character covered by the sub char-table. */
Lisp_Object min_char;
int min_char;
/* Use set_sub_char_table_contents to set this. */
Lisp_Object contents[FLEXIBLE_ARRAY_MEMBER];
@ -1539,12 +1540,16 @@ struct Lisp_Subr
const char *doc;
};
/* This is the number of slots that every char table must have. This
counts the ordinary slots and the top, defalt, parent, and purpose
slots. */
enum CHAR_TABLE_STANDARD_SLOTS
enum char_table_specials
{
CHAR_TABLE_STANDARD_SLOTS = PSEUDOVECSIZE (struct Lisp_Char_Table, extras)
/* This is the number of slots that every char table must have. This
counts the ordinary slots and the top, defalt, parent, and purpose
slots. */
CHAR_TABLE_STANDARD_SLOTS = PSEUDOVECSIZE (struct Lisp_Char_Table, extras),
/* This is an index of first Lisp_Object field in Lisp_Sub_Char_Table
when the latter is treated as an ordinary Lisp_Vector. */
SUB_CHAR_TABLE_OFFSET = PSEUDOVECSIZE (struct Lisp_Sub_Char_Table, contents)
};
/* Return the number of "extra" slots in the char table CT. */
@ -3723,6 +3728,20 @@ make_uninit_vector (ptrdiff_t size)
return v;
}
/* Like above, but special for sub char-tables. */
INLINE Lisp_Object
make_uninit_sub_char_table (int depth, int min_char)
{
int slots = SUB_CHAR_TABLE_OFFSET + chartab_size[depth];
Lisp_Object v = make_uninit_vector (slots);
XSETPVECTYPE (XVECTOR (v), PVEC_SUB_CHAR_TABLE);
XSUB_CHAR_TABLE (v)->depth = depth;
XSUB_CHAR_TABLE (v)->min_char = min_char;
return v;
}
extern struct Lisp_Vector *allocate_pseudovector (int, int, enum pvec_type);
#define ALLOCATE_PSEUDOVECTOR(typ,field,tag) \
((typ*) \

41
src/lread.c
View file

@ -2619,21 +2619,38 @@ read1 (Lisp_Object readcharfun, int *pch, bool first_in_list)
c = READCHAR;
if (c == '[')
{
Lisp_Object tmp;
int depth;
ptrdiff_t size;
/* Sub char-table can't be read as a regular
vector because of a two C integer fields. */
Lisp_Object tbl, tmp = read_list (1, readcharfun);
ptrdiff_t size = XINT (Flength (tmp));
int i, depth, min_char;
struct Lisp_Cons *cell;
tmp = read_vector (readcharfun, 0);
size = ASIZE (tmp);
if (size == 0)
error ("Invalid size char-table");
if (! RANGED_INTEGERP (1, AREF (tmp, 0), 3))
error ("Invalid depth in char-table");
depth = XINT (AREF (tmp, 0));
error ("Zero-sized sub char-table");
if (! RANGED_INTEGERP (1, XCAR (tmp), 3))
error ("Invalid depth in sub char-table");
depth = XINT (XCAR (tmp));
if (chartab_size[depth] != size - 2)
error ("Invalid size char-table");
XSETPVECTYPE (XVECTOR (tmp), PVEC_SUB_CHAR_TABLE);
return tmp;
error ("Invalid size in sub char-table");
cell = XCONS (tmp), tmp = XCDR (tmp), size--;
free_cons (cell);
if (! RANGED_INTEGERP (0, XCAR (tmp), MAX_CHAR))
error ("Invalid minimum character in sub-char-table");
min_char = XINT (XCAR (tmp));
cell = XCONS (tmp), tmp = XCDR (tmp), size--;
free_cons (cell);
tbl = make_uninit_sub_char_table (depth, min_char);
for (i = 0; i < size; i++)
{
XSUB_CHAR_TABLE (tbl)->contents[i] = XCAR (tmp);
cell = XCONS (tmp), tmp = XCDR (tmp);
free_cons (cell);
}
return tbl;
}
invalid_syntax ("#^^");
}

2
src/print.c
View file

@ -1968,7 +1968,7 @@ print_object (Lisp_Object obj, Lisp_Object printcharfun, bool escapeflag)
Otherwise we'll make a line extremely long, which
results in slow redisplay. */
if (SUB_CHAR_TABLE_P (obj)
&& XINT (XSUB_CHAR_TABLE (obj)->depth) == 3)
&& XSUB_CHAR_TABLE (obj)->depth == 3)
PRINTCHAR ('\n');
PRINTCHAR ('#');
PRINTCHAR ('^');