mirror of
https://git.postgresql.org/git/postgresql.git
synced 2024-12-27 08:39:28 +08:00
788 lines
16 KiB
C
788 lines
16 KiB
C
#include "postgres.h"
|
|
|
|
#include <float.h>
|
|
|
|
#include "access/gist.h"
|
|
#include "access/itup.h"
|
|
#include "access/rtree.h"
|
|
#include "utils/elog.h"
|
|
#include "utils/palloc.h"
|
|
#include "utils/array.h"
|
|
#include "utils/builtins.h"
|
|
#include "storage/bufpage.h"
|
|
#include "access/tuptoaster.h"
|
|
|
|
#include "txtidx.h"
|
|
#include "query.h"
|
|
#include "gistidx.h"
|
|
#include "crc32.h"
|
|
|
|
PG_FUNCTION_INFO_V1(gtxtidx_in);
|
|
Datum gtxtidx_in(PG_FUNCTION_ARGS);
|
|
|
|
PG_FUNCTION_INFO_V1(gtxtidx_out);
|
|
Datum gtxtidx_out(PG_FUNCTION_ARGS);
|
|
|
|
PG_FUNCTION_INFO_V1(gtxtidx_compress);
|
|
Datum gtxtidx_compress(PG_FUNCTION_ARGS);
|
|
|
|
PG_FUNCTION_INFO_V1(gtxtidx_decompress);
|
|
Datum gtxtidx_decompress(PG_FUNCTION_ARGS);
|
|
|
|
PG_FUNCTION_INFO_V1(gtxtidx_consistent);
|
|
Datum gtxtidx_consistent(PG_FUNCTION_ARGS);
|
|
|
|
PG_FUNCTION_INFO_V1(gtxtidx_union);
|
|
Datum gtxtidx_union(PG_FUNCTION_ARGS);
|
|
|
|
PG_FUNCTION_INFO_V1(gtxtidx_same);
|
|
Datum gtxtidx_same(PG_FUNCTION_ARGS);
|
|
|
|
PG_FUNCTION_INFO_V1(gtxtidx_penalty);
|
|
Datum gtxtidx_penalty(PG_FUNCTION_ARGS);
|
|
|
|
PG_FUNCTION_INFO_V1(gtxtidx_picksplit);
|
|
Datum gtxtidx_picksplit(PG_FUNCTION_ARGS);
|
|
|
|
#define GETENTRY(vec,pos) ((GISTTYPE *) DatumGetPointer(((GISTENTRY *) VARDATA(vec))[(pos)].key))
|
|
#define SUMBIT(val) ( \
|
|
GETBITBYTE(val,0) + \
|
|
GETBITBYTE(val,1) + \
|
|
GETBITBYTE(val,2) + \
|
|
GETBITBYTE(val,3) + \
|
|
GETBITBYTE(val,4) + \
|
|
GETBITBYTE(val,5) + \
|
|
GETBITBYTE(val,6) + \
|
|
GETBITBYTE(val,7) \
|
|
)
|
|
|
|
|
|
Datum
|
|
gtxtidx_in(PG_FUNCTION_ARGS)
|
|
{
|
|
elog(ERROR, "Not implemented");
|
|
PG_RETURN_DATUM(0);
|
|
}
|
|
|
|
Datum
|
|
gtxtidx_out(PG_FUNCTION_ARGS)
|
|
{
|
|
elog(ERROR, "Not implemented");
|
|
PG_RETURN_DATUM(0);
|
|
}
|
|
|
|
static int
|
|
compareint(const void *a, const void *b)
|
|
{
|
|
if (*((int4 *) a) == *((int4 *) b))
|
|
return 0;
|
|
return (*((int4 *) a) > *((int4 *) b)) ? 1 : -1;
|
|
}
|
|
|
|
static int
|
|
uniqueint(int4 *a, int4 l)
|
|
{
|
|
int4 *ptr,
|
|
*res;
|
|
|
|
if (l == 1)
|
|
return l;
|
|
|
|
ptr = res = a;
|
|
|
|
qsort((void *) a, l, sizeof(int4), compareint);
|
|
|
|
while (ptr - a < l)
|
|
if (*ptr != *res)
|
|
*(++res) = *ptr++;
|
|
else
|
|
ptr++;
|
|
return res + 1 - a;
|
|
}
|
|
|
|
static void
|
|
makesign(BITVECP sign, GISTTYPE * a)
|
|
{
|
|
int4 k,
|
|
len = ARRNELEM(a);
|
|
int4 *ptr = GETARR(a);
|
|
|
|
MemSet((void *) sign, 0, sizeof(BITVEC));
|
|
for (k = 0; k < len; k++)
|
|
HASH(sign, ptr[k]);
|
|
}
|
|
|
|
Datum
|
|
gtxtidx_compress(PG_FUNCTION_ARGS)
|
|
{
|
|
GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
|
|
GISTENTRY *retval = entry;
|
|
|
|
if (entry->leafkey)
|
|
{ /* txtidx */
|
|
GISTTYPE *res;
|
|
txtidx *toastedval = (txtidx *) DatumGetPointer(entry->key);
|
|
txtidx *val = (txtidx *) DatumGetPointer(PG_DETOAST_DATUM(entry->key));
|
|
int4 len;
|
|
int4 *arr;
|
|
WordEntry *ptr = ARRPTR(val);
|
|
char *words = STRPTR(val);
|
|
|
|
len = CALCGTSIZE(ARRKEY, val->size);
|
|
res = (GISTTYPE *) palloc(len);
|
|
res->len = len;
|
|
res->flag = ARRKEY;
|
|
arr = GETARR(res);
|
|
len = val->size;
|
|
while (len--)
|
|
{
|
|
*arr = crc32_sz((uint8 *) &words[ptr->pos], ptr->len);
|
|
arr++;
|
|
ptr++;
|
|
}
|
|
|
|
len = uniqueint(GETARR(res), val->size);
|
|
if (len != val->size)
|
|
{
|
|
/*
|
|
* there is a collision of hash-function; len is always less
|
|
* than val->size
|
|
*/
|
|
len = CALCGTSIZE(ARRKEY, len);
|
|
res = (GISTTYPE *) repalloc((void *) res, len);
|
|
res->len = len;
|
|
}
|
|
if (val != toastedval)
|
|
pfree(val);
|
|
|
|
/* make signature, if array is too long */
|
|
if (res->len > TOAST_INDEX_TARGET)
|
|
{
|
|
GISTTYPE *ressign;
|
|
|
|
len = CALCGTSIZE(SIGNKEY, 0);
|
|
ressign = (GISTTYPE *) palloc(len);
|
|
ressign->len = len;
|
|
ressign->flag = SIGNKEY;
|
|
makesign(GETSIGN(ressign), res);
|
|
pfree(res);
|
|
res = ressign;
|
|
}
|
|
|
|
retval = (GISTENTRY *) palloc(sizeof(GISTENTRY));
|
|
gistentryinit(*retval, PointerGetDatum(res),
|
|
entry->rel, entry->page,
|
|
entry->offset, res->len, FALSE);
|
|
}
|
|
else if (ISSIGNKEY(DatumGetPointer(entry->key)) &&
|
|
!ISALLTRUE(DatumGetPointer(entry->key)))
|
|
{
|
|
int4 i,
|
|
len;
|
|
GISTTYPE *res;
|
|
BITVECP sign = GETSIGN(DatumGetPointer(entry->key));
|
|
|
|
LOOPBYTE(
|
|
if ((sign[i] & 0xff) != 0xff)
|
|
PG_RETURN_POINTER(retval);
|
|
);
|
|
|
|
len = CALCGTSIZE(SIGNKEY | ALLISTRUE, 0);
|
|
res = (GISTTYPE *) palloc(len);
|
|
res->len = len;
|
|
res->flag = SIGNKEY | ALLISTRUE;
|
|
|
|
retval = (GISTENTRY *) palloc(sizeof(GISTENTRY));
|
|
gistentryinit(*retval, PointerGetDatum(res),
|
|
entry->rel, entry->page,
|
|
entry->offset, res->len, FALSE);
|
|
}
|
|
PG_RETURN_POINTER(retval);
|
|
}
|
|
|
|
Datum
|
|
gtxtidx_decompress(PG_FUNCTION_ARGS)
|
|
{
|
|
GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
|
|
GISTTYPE *key = (GISTTYPE *) DatumGetPointer(PG_DETOAST_DATUM(entry->key));
|
|
|
|
if (key != (GISTTYPE *) DatumGetPointer(entry->key))
|
|
{
|
|
GISTENTRY *retval = (GISTENTRY *) palloc(sizeof(GISTENTRY));
|
|
|
|
gistentryinit(*retval, PointerGetDatum(key),
|
|
entry->rel, entry->page,
|
|
entry->offset, key->len, FALSE);
|
|
|
|
PG_RETURN_POINTER(retval);
|
|
}
|
|
|
|
PG_RETURN_POINTER(entry);
|
|
}
|
|
|
|
typedef struct
|
|
{
|
|
int4 *arrb;
|
|
int4 *arre;
|
|
} CHKVAL;
|
|
|
|
/*
|
|
* is there value 'val' in array or not ?
|
|
*/
|
|
static bool
|
|
checkcondition_arr(void *checkval, ITEM * val)
|
|
{
|
|
int4 *StopLow = ((CHKVAL *) checkval)->arrb;
|
|
int4 *StopHigh = ((CHKVAL *) checkval)->arre;
|
|
int4 *StopMiddle;
|
|
|
|
/* Loop invariant: StopLow <= val < StopHigh */
|
|
|
|
while (StopLow < StopHigh)
|
|
{
|
|
StopMiddle = StopLow + (StopHigh - StopLow) / 2;
|
|
if (*StopMiddle == val->val)
|
|
return (true);
|
|
else if (*StopMiddle < val->val)
|
|
StopLow = StopMiddle + 1;
|
|
else
|
|
StopHigh = StopMiddle;
|
|
}
|
|
|
|
return (false);
|
|
}
|
|
|
|
static bool
|
|
checkcondition_bit(void *checkval, ITEM * val)
|
|
{
|
|
return GETBIT(checkval, HASHVAL(val->val));
|
|
}
|
|
|
|
Datum
|
|
gtxtidx_consistent(PG_FUNCTION_ARGS)
|
|
{
|
|
QUERYTYPE *query = (QUERYTYPE *) PG_GETARG_POINTER(1);
|
|
GISTTYPE *key = (GISTTYPE *) DatumGetPointer(
|
|
((GISTENTRY *) PG_GETARG_POINTER(0))->key
|
|
);
|
|
|
|
if (!query->size)
|
|
PG_RETURN_BOOL(false);
|
|
|
|
if (ISSIGNKEY(key))
|
|
{
|
|
if (ISALLTRUE(key))
|
|
PG_RETURN_BOOL(true);
|
|
|
|
PG_RETURN_BOOL(execute(
|
|
GETQUERY(query),
|
|
(void *) GETSIGN(key), false,
|
|
checkcondition_bit
|
|
));
|
|
}
|
|
else
|
|
{ /* only leaf pages */
|
|
CHKVAL chkval;
|
|
|
|
chkval.arrb = GETARR(key);
|
|
chkval.arre = chkval.arrb + ARRNELEM(key);
|
|
PG_RETURN_BOOL(execute(
|
|
GETQUERY(query),
|
|
(void *) &chkval, true,
|
|
checkcondition_arr
|
|
));
|
|
}
|
|
}
|
|
|
|
static int4
|
|
unionkey(BITVECP sbase, GISTTYPE * add)
|
|
{
|
|
int4 i;
|
|
|
|
if (ISSIGNKEY(add))
|
|
{
|
|
BITVECP sadd = GETSIGN(add);
|
|
|
|
if (ISALLTRUE(add))
|
|
return 1;
|
|
|
|
LOOPBYTE(
|
|
sbase[i] |= sadd[i];
|
|
);
|
|
}
|
|
else
|
|
{
|
|
int4 *ptr = GETARR(add);
|
|
|
|
for (i = 0; i < ARRNELEM(add); i++)
|
|
HASH(sbase, ptr[i]);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|
|
Datum
|
|
gtxtidx_union(PG_FUNCTION_ARGS)
|
|
{
|
|
bytea *entryvec = (bytea *) PG_GETARG_POINTER(0);
|
|
int *size = (int *) PG_GETARG_POINTER(1);
|
|
BITVEC base;
|
|
int4 len = (VARSIZE(entryvec) - VARHDRSZ) / sizeof(GISTENTRY);
|
|
int4 i;
|
|
int4 flag = 0;
|
|
GISTTYPE *result;
|
|
|
|
MemSet((void *) base, 0, sizeof(BITVEC));
|
|
for (i = 0; i < len; i++)
|
|
{
|
|
if (unionkey(base, GETENTRY(entryvec, i)))
|
|
{
|
|
flag = ALLISTRUE;
|
|
break;
|
|
}
|
|
}
|
|
|
|
flag |= SIGNKEY;
|
|
len = CALCGTSIZE(flag, 0);
|
|
result = (GISTTYPE *) palloc(len);
|
|
*size = result->len = len;
|
|
result->flag = flag;
|
|
if (!ISALLTRUE(result))
|
|
memcpy((void *) GETSIGN(result), (void *) base, sizeof(BITVEC));
|
|
|
|
PG_RETURN_POINTER(result);
|
|
}
|
|
|
|
Datum
|
|
gtxtidx_same(PG_FUNCTION_ARGS)
|
|
{
|
|
GISTTYPE *a = (GISTTYPE *) PG_GETARG_POINTER(0);
|
|
GISTTYPE *b = (GISTTYPE *) PG_GETARG_POINTER(1);
|
|
bool *result = (bool *) PG_GETARG_POINTER(2);
|
|
|
|
if (ISSIGNKEY(a))
|
|
{ /* then b also ISSIGNKEY */
|
|
if (ISALLTRUE(a) && ISALLTRUE(b))
|
|
*result = true;
|
|
else if (ISALLTRUE(a))
|
|
*result = false;
|
|
else if (ISALLTRUE(b))
|
|
*result = false;
|
|
else
|
|
{
|
|
int4 i;
|
|
BITVECP sa = GETSIGN(a),
|
|
sb = GETSIGN(b);
|
|
|
|
*result = true;
|
|
LOOPBYTE(
|
|
if (sa[i] != sb[i])
|
|
{
|
|
*result = false;
|
|
break;
|
|
}
|
|
);
|
|
}
|
|
}
|
|
else
|
|
{ /* a and b ISARRKEY */
|
|
int4 lena = ARRNELEM(a),
|
|
lenb = ARRNELEM(b);
|
|
|
|
if (lena != lenb)
|
|
*result = false;
|
|
else
|
|
{
|
|
int4 *ptra = GETARR(a),
|
|
*ptrb = GETARR(b);
|
|
int4 i;
|
|
|
|
*result = true;
|
|
for (i = 0; i < lena; i++)
|
|
if (ptra[i] != ptrb[i])
|
|
{
|
|
*result = false;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
PG_RETURN_POINTER(result);
|
|
}
|
|
|
|
static int4
|
|
sizebitvec(BITVECP sign)
|
|
{
|
|
int4 size = 0,
|
|
i;
|
|
|
|
LOOPBYTE(
|
|
size += SUMBIT(*(char *) sign);
|
|
sign = (BITVECP) (((char *) sign) + 1);
|
|
);
|
|
return size;
|
|
}
|
|
|
|
Datum
|
|
gtxtidx_penalty(PG_FUNCTION_ARGS)
|
|
{
|
|
GISTENTRY *origentry = (GISTENTRY *) PG_GETARG_POINTER(0); /* always ISSIGNKEY */
|
|
GISTENTRY *newentry = (GISTENTRY *) PG_GETARG_POINTER(1);
|
|
float *penalty = (float *) PG_GETARG_POINTER(2);
|
|
GISTTYPE *origval = (GISTTYPE *) DatumGetPointer(origentry->key);
|
|
GISTTYPE *newval = (GISTTYPE *) DatumGetPointer(newentry->key);
|
|
int4 unionsize = 0;
|
|
BITVECP orig = GETSIGN(origval);
|
|
|
|
if (ISALLTRUE(origval))
|
|
{
|
|
*penalty = 0.0;
|
|
PG_RETURN_POINTER(penalty);
|
|
}
|
|
|
|
if (ISARRKEY(newval))
|
|
{
|
|
int4 *ptr = GETARR(newval),
|
|
n = ARRNELEM(newval);
|
|
|
|
while (n--)
|
|
{
|
|
if (GETBIT(orig, HASHVAL(*ptr)) == 0)
|
|
unionsize++;
|
|
ptr++;
|
|
}
|
|
*penalty = (float) unionsize;
|
|
}
|
|
else
|
|
{
|
|
if (ISALLTRUE(newval))
|
|
*penalty = (float) (SIGLENBIT - sizebitvec(orig));
|
|
else
|
|
{
|
|
char valtmp;
|
|
BITVECP nval = GETSIGN(newval);
|
|
int4 i;
|
|
|
|
LOOPBYTE(
|
|
valtmp = nval[i] | orig[i];
|
|
unionsize += SUMBIT(valtmp) - SUMBIT(orig[i]);
|
|
);
|
|
*penalty = (float) unionsize;
|
|
}
|
|
}
|
|
|
|
PG_RETURN_POINTER(penalty);
|
|
}
|
|
|
|
typedef struct
|
|
{
|
|
bool allistrue;
|
|
BITVEC sign;
|
|
} CACHESIGN;
|
|
|
|
static void
|
|
fillcache(CACHESIGN * item, GISTTYPE * key)
|
|
{
|
|
item->allistrue = false;
|
|
if (ISARRKEY(key))
|
|
makesign(item->sign, key);
|
|
else if (ISALLTRUE(key))
|
|
item->allistrue = true;
|
|
else
|
|
memcpy((void *) item->sign, (void *) GETSIGN(key), sizeof(BITVEC));
|
|
}
|
|
|
|
#define WISH_F(a,b,c) (double)( -(double)(((a)-(b))*((a)-(b))*((a)-(b)))*(c) )
|
|
typedef struct
|
|
{
|
|
OffsetNumber pos;
|
|
int4 cost;
|
|
} SPLITCOST;
|
|
|
|
static int
|
|
comparecost(const void *a, const void *b)
|
|
{
|
|
if (((SPLITCOST *) a)->cost == ((SPLITCOST *) b)->cost)
|
|
return 0;
|
|
else
|
|
return (((SPLITCOST *) a)->cost > ((SPLITCOST *) b)->cost) ? 1 : -1;
|
|
}
|
|
|
|
Datum
|
|
gtxtidx_picksplit(PG_FUNCTION_ARGS)
|
|
{
|
|
bytea *entryvec = (bytea *) PG_GETARG_POINTER(0);
|
|
GIST_SPLITVEC *v = (GIST_SPLITVEC *) PG_GETARG_POINTER(1);
|
|
OffsetNumber k,
|
|
j;
|
|
GISTTYPE *datum_l,
|
|
*datum_r;
|
|
BITVEC union_l,
|
|
union_r;
|
|
bool firsttime = true;
|
|
int4 size_alpha,
|
|
size_beta,
|
|
sizeu,
|
|
sizei;
|
|
int4 size_waste,
|
|
waste = 0.0;
|
|
int4 size_l,
|
|
size_r;
|
|
int4 nbytes;
|
|
OffsetNumber seed_1 = 0,
|
|
seed_2 = 0;
|
|
OffsetNumber *left,
|
|
*right;
|
|
OffsetNumber maxoff;
|
|
BITVECP ptra,
|
|
ptrb,
|
|
ptrc;
|
|
int i;
|
|
CACHESIGN *cache;
|
|
char valtmp;
|
|
SPLITCOST *costvector;
|
|
|
|
maxoff = ((VARSIZE(entryvec) - VARHDRSZ) / sizeof(GISTENTRY)) - 2;
|
|
nbytes = (maxoff + 2) * sizeof(OffsetNumber);
|
|
v->spl_left = (OffsetNumber *) palloc(nbytes);
|
|
v->spl_right = (OffsetNumber *) palloc(nbytes);
|
|
|
|
cache = (CACHESIGN *) palloc(sizeof(CACHESIGN) * (maxoff + 2));
|
|
fillcache(&cache[FirstOffsetNumber], GETENTRY(entryvec, FirstOffsetNumber));
|
|
|
|
for (k = FirstOffsetNumber; k < maxoff; k = OffsetNumberNext(k))
|
|
{
|
|
for (j = OffsetNumberNext(k); j <= maxoff; j = OffsetNumberNext(j))
|
|
{
|
|
if (k == FirstOffsetNumber)
|
|
fillcache(&cache[j], GETENTRY(entryvec, j));
|
|
|
|
if (cache[k].allistrue || cache[j].allistrue)
|
|
{
|
|
sizeu = SIGLENBIT;
|
|
if (cache[k].allistrue && cache[j].allistrue)
|
|
sizei = SIGLENBIT;
|
|
else
|
|
sizei = (cache[k].allistrue) ?
|
|
sizebitvec(cache[j].sign) : sizebitvec(cache[k].sign);
|
|
}
|
|
else
|
|
{
|
|
sizeu = sizei = 0;
|
|
ptra = cache[j].sign;
|
|
ptrb = cache[k].sign;
|
|
/* critical section for bench !!! */
|
|
|
|
#define COUNT(pos) do { \
|
|
if ( GETBITBYTE(*(char*)ptra,pos) ) { \
|
|
sizeu++; \
|
|
if ( GETBITBYTE(*(char*)ptrb, pos) ) \
|
|
sizei++; \
|
|
} else if ( GETBITBYTE(*(char*)ptrb, pos) ) \
|
|
sizeu++; \
|
|
} while(0)
|
|
LOOPBYTE(
|
|
COUNT(0);
|
|
COUNT(1);
|
|
COUNT(2);
|
|
COUNT(3);
|
|
COUNT(4);
|
|
COUNT(5);
|
|
COUNT(6);
|
|
COUNT(7);
|
|
ptra = (BITVECP) (((char *) ptra) + 1);
|
|
ptrb = (BITVECP) (((char *) ptrb) + 1);
|
|
);
|
|
|
|
}
|
|
size_waste = sizeu - sizei;
|
|
if (size_waste > waste || firsttime)
|
|
{
|
|
waste = size_waste;
|
|
seed_1 = k;
|
|
seed_2 = j;
|
|
firsttime = false;
|
|
}
|
|
}
|
|
}
|
|
|
|
left = v->spl_left;
|
|
v->spl_nleft = 0;
|
|
right = v->spl_right;
|
|
v->spl_nright = 0;
|
|
|
|
if (seed_1 == 0 || seed_2 == 0)
|
|
{
|
|
seed_1 = 1;
|
|
seed_2 = 2;
|
|
}
|
|
|
|
/* form initial .. */
|
|
if (cache[seed_1].allistrue)
|
|
{
|
|
datum_l = (GISTTYPE *) palloc(CALCGTSIZE(SIGNKEY | ALLISTRUE, 0));
|
|
datum_l->len = CALCGTSIZE(SIGNKEY | ALLISTRUE, 0);
|
|
datum_l->flag = SIGNKEY | ALLISTRUE;
|
|
size_l = SIGLENBIT;
|
|
}
|
|
else
|
|
{
|
|
datum_l = (GISTTYPE *) palloc(CALCGTSIZE(SIGNKEY, 0));
|
|
datum_l->len = CALCGTSIZE(SIGNKEY, 0);
|
|
datum_l->flag = SIGNKEY;
|
|
memcpy((void *) GETSIGN(datum_l), (void *) cache[seed_1].sign, sizeof(BITVEC));
|
|
size_l = sizebitvec(GETSIGN(datum_l));
|
|
}
|
|
if (cache[seed_2].allistrue)
|
|
{
|
|
datum_r = (GISTTYPE *) palloc(CALCGTSIZE(SIGNKEY | ALLISTRUE, 0));
|
|
datum_r->len = CALCGTSIZE(SIGNKEY | ALLISTRUE, 0);
|
|
datum_r->flag = SIGNKEY | ALLISTRUE;
|
|
size_r = SIGLENBIT;
|
|
}
|
|
else
|
|
{
|
|
datum_r = (GISTTYPE *) palloc(CALCGTSIZE(SIGNKEY, 0));
|
|
datum_r->len = CALCGTSIZE(SIGNKEY, 0);
|
|
datum_r->flag = SIGNKEY;
|
|
memcpy((void *) GETSIGN(datum_r), (void *) cache[seed_2].sign, sizeof(BITVEC));
|
|
size_r = sizebitvec(GETSIGN(datum_r));
|
|
}
|
|
|
|
maxoff = OffsetNumberNext(maxoff);
|
|
fillcache(&cache[maxoff], GETENTRY(entryvec, maxoff));
|
|
/* sort before ... */
|
|
costvector = (SPLITCOST *) palloc(sizeof(SPLITCOST) * maxoff);
|
|
for (j = FirstOffsetNumber; j <= maxoff; j = OffsetNumberNext(j))
|
|
{
|
|
costvector[j - 1].pos = j;
|
|
if (cache[j].allistrue)
|
|
{
|
|
size_alpha = SIGLENBIT - size_l;
|
|
size_beta = SIGLENBIT - size_r;
|
|
}
|
|
else
|
|
{
|
|
ptra = cache[seed_1].sign;
|
|
ptrb = cache[seed_2].sign;
|
|
ptrc = cache[j].sign;
|
|
size_beta = size_alpha = 0;
|
|
if (cache[seed_1].allistrue)
|
|
{
|
|
if (!cache[seed_2].allistrue)
|
|
{
|
|
LOOPBIT(
|
|
if (GETBIT(ptrc, i) && !GETBIT(ptrb, i))
|
|
size_beta++;
|
|
);
|
|
}
|
|
}
|
|
else if (cache[seed_2].allistrue)
|
|
{
|
|
if (!cache[seed_1].allistrue)
|
|
{
|
|
LOOPBIT(
|
|
if (GETBIT(ptrc, i) && !GETBIT(ptra, i))
|
|
size_alpha++;
|
|
);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
LOOPBIT(
|
|
if (GETBIT(ptrc, i) && !GETBIT(ptra, i))
|
|
size_alpha++;
|
|
if (GETBIT(ptrc, i) && !GETBIT(ptrb, i))
|
|
size_beta++;
|
|
);
|
|
}
|
|
|
|
}
|
|
costvector[j - 1].cost = abs(size_alpha - size_beta);
|
|
}
|
|
qsort((void *) costvector, maxoff, sizeof(SPLITCOST), comparecost);
|
|
|
|
for (k = 0; k < maxoff; k++)
|
|
{
|
|
j = costvector[k].pos;
|
|
if (j == seed_1)
|
|
{
|
|
*left++ = j;
|
|
v->spl_nleft++;
|
|
continue;
|
|
}
|
|
else if (j == seed_2)
|
|
{
|
|
*right++ = j;
|
|
v->spl_nright++;
|
|
continue;
|
|
}
|
|
|
|
if (ISALLTRUE(datum_l) || cache[j].allistrue)
|
|
size_alpha = SIGLENBIT;
|
|
else
|
|
{
|
|
ptra = cache[j].sign;
|
|
ptrb = GETSIGN(datum_l);
|
|
size_alpha = 0;
|
|
LOOPBYTE(
|
|
valtmp = union_l[i] = ptra[i] | ptrb[i];
|
|
size_alpha += SUMBIT(valtmp);
|
|
);
|
|
}
|
|
if (ISALLTRUE(datum_r) || cache[j].allistrue)
|
|
size_beta = SIGLENBIT;
|
|
else
|
|
{
|
|
ptra = cache[j].sign;
|
|
ptrb = GETSIGN(datum_r);
|
|
size_beta = 0;
|
|
LOOPBYTE(
|
|
valtmp = union_r[i] = ptra[i] | ptrb[i];
|
|
size_beta += SUMBIT(valtmp);
|
|
);
|
|
}
|
|
|
|
if (size_alpha - size_l < size_beta - size_r + WISH_F(v->spl_nleft, v->spl_nright, 0.1))
|
|
{
|
|
if (!ISALLTRUE(datum_l))
|
|
{
|
|
if (size_alpha == SIGLENBIT)
|
|
{
|
|
if (size_alpha != size_l)
|
|
MemSet((void *) GETSIGN(datum_l), 0xff, sizeof(BITVEC));
|
|
}
|
|
else
|
|
memcpy((void *) GETSIGN(datum_l), (void *) union_l, sizeof(BITVEC));
|
|
}
|
|
size_l = size_alpha;
|
|
*left++ = j;
|
|
v->spl_nleft++;
|
|
}
|
|
else
|
|
{
|
|
if (!ISALLTRUE(datum_r))
|
|
{
|
|
if (size_beta == SIGLENBIT)
|
|
{
|
|
if (size_beta != size_r)
|
|
MemSet((void *) GETSIGN(datum_r), 0xff, sizeof(BITVEC));
|
|
}
|
|
else
|
|
memcpy((void *) GETSIGN(datum_r), (void *) union_r, sizeof(BITVEC));
|
|
}
|
|
size_r = size_beta;
|
|
*right++ = j;
|
|
v->spl_nright++;
|
|
}
|
|
}
|
|
|
|
*right = *left = FirstOffsetNumber;
|
|
pfree(costvector);
|
|
pfree(cache);
|
|
v->spl_ldatum = PointerGetDatum(datum_l);
|
|
v->spl_rdatum = PointerGetDatum(datum_r);
|
|
|
|
PG_RETURN_POINTER(v);
|
|
}
|