Header And Logo
|
#include "postgres.h"#include "access/gist.h"#include "access/skey.h"#include "_int.h"
Go to the source code of this file.
Data Structures | |
| struct | SPLITCOST |
Defines | |
| #define | GETENTRY(vec, pos) ((GISTTYPE *) DatumGetPointer((vec)->vector[(pos)].key)) |
Functions | |
| PG_FUNCTION_INFO_V1 (g_intbig_consistent) | |
| PG_FUNCTION_INFO_V1 (g_intbig_compress) | |
| PG_FUNCTION_INFO_V1 (g_intbig_decompress) | |
| PG_FUNCTION_INFO_V1 (g_intbig_penalty) | |
| PG_FUNCTION_INFO_V1 (g_intbig_picksplit) | |
| PG_FUNCTION_INFO_V1 (g_intbig_union) | |
| PG_FUNCTION_INFO_V1 (g_intbig_same) | |
| Datum | g_intbig_consistent (PG_FUNCTION_ARGS) |
| Datum | g_intbig_compress (PG_FUNCTION_ARGS) |
| Datum | g_intbig_decompress (PG_FUNCTION_ARGS) |
| Datum | g_intbig_penalty (PG_FUNCTION_ARGS) |
| Datum | g_intbig_picksplit (PG_FUNCTION_ARGS) |
| Datum | g_intbig_union (PG_FUNCTION_ARGS) |
| Datum | g_intbig_same (PG_FUNCTION_ARGS) |
| PG_FUNCTION_INFO_V1 (_intbig_in) | |
| Datum | _intbig_in (PG_FUNCTION_ARGS) |
| PG_FUNCTION_INFO_V1 (_intbig_out) | |
| Datum | _intbig_out (PG_FUNCTION_ARGS) |
| static bool | _intbig_overlap (GISTTYPE *a, ArrayType *b) |
| static bool | _intbig_contains (GISTTYPE *a, ArrayType *b) |
| static int32 | sizebitvec (BITVECP sign) |
| static int | hemdistsign (BITVECP a, BITVECP b) |
| static int | hemdist (GISTTYPE *a, GISTTYPE *b) |
| static int32 | unionkey (BITVECP sbase, GISTTYPE *add) |
| static int | comparecost (const void *a, const void *b) |
Variables | |
| static const uint8 | number_of_ones [256] |
| #define GETENTRY | ( | vec, | ||
| pos | ||||
| ) | ((GISTTYPE *) DatumGetPointer((vec)->vector[(pos)].key)) |
Definition at line 11 of file _intbig_gist.c.
Referenced by g_intbig_picksplit(), and g_intbig_union().
Definition at line 99 of file _intbig_gist.c.
References ARRNELEMS, ARRPTR, CHECKARRVALID, GETBIT, GETSIGN, and HASHVAL.
Referenced by g_intbig_consistent().
| Datum _intbig_in | ( | PG_FUNCTION_ARGS | ) |
Definition at line 59 of file _intbig_gist.c.
References ereport, errcode(), errmsg(), ERROR, and PG_RETURN_DATUM.
{
ereport(ERROR,
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
errmsg("_intbig_in() not implemented")));
PG_RETURN_DATUM(0);
}
| Datum _intbig_out | ( | PG_FUNCTION_ARGS | ) |
Definition at line 68 of file _intbig_gist.c.
References ereport, errcode(), errmsg(), ERROR, and PG_RETURN_DATUM.
{
ereport(ERROR,
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
errmsg("_intbig_out() not implemented")));
PG_RETURN_DATUM(0);
}
Definition at line 81 of file _intbig_gist.c.
References ARRNELEMS, ARRPTR, CHECKARRVALID, GETBIT, GETSIGN, and HASHVAL.
Referenced by g_intbig_consistent().
| static int comparecost | ( | const void * | a, | |
| const void * | b | |||
| ) | [static] |
Definition at line 333 of file _intbig_gist.c.
Referenced by g_intbig_picksplit().
| Datum g_intbig_compress | ( | PG_FUNCTION_ARGS | ) |
Definition at line 149 of file _intbig_gist.c.
References ALLISTRUE, ARRISEMPTY, ARRNELEMS, ARRPTR, CALCGTSIZE, CHECKARRVALID, DatumGetArrayTypeP, DatumGetPointer, FALSE, GISTTYPE::flag, GETSIGN, gistentryinit, HASH, i, ISALLTRUE, GISTENTRY::key, GISTENTRY::leafkey, LOOPBYTE, GISTENTRY::offset, GISTENTRY::page, palloc(), palloc0(), pfree(), PG_GETARG_POINTER, PG_RETURN_POINTER, PointerGetDatum, GISTENTRY::rel, SET_VARSIZE, and sign.
{
GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
if (entry->leafkey)
{
GISTENTRY *retval;
ArrayType *in = DatumGetArrayTypeP(entry->key);
int32 *ptr;
int num;
GISTTYPE *res = (GISTTYPE *) palloc0(CALCGTSIZE(0));
CHECKARRVALID(in);
if (ARRISEMPTY(in))
{
ptr = NULL;
num = 0;
}
else
{
ptr = ARRPTR(in);
num = ARRNELEMS(in);
}
SET_VARSIZE(res, CALCGTSIZE(0));
while (num--)
{
HASH(GETSIGN(res), *ptr);
ptr++;
}
retval = (GISTENTRY *) palloc(sizeof(GISTENTRY));
gistentryinit(*retval, PointerGetDatum(res),
entry->rel, entry->page,
entry->offset, FALSE);
if (in != DatumGetArrayTypeP(entry->key))
pfree(in);
PG_RETURN_POINTER(retval);
}
else if (!ISALLTRUE(DatumGetPointer(entry->key)))
{
GISTENTRY *retval;
int i;
BITVECP sign = GETSIGN(DatumGetPointer(entry->key));
GISTTYPE *res;
LOOPBYTE
{
if ((sign[i] & 0xff) != 0xff)
PG_RETURN_POINTER(entry);
}
res = (GISTTYPE *) palloc(CALCGTSIZE(ALLISTRUE));
SET_VARSIZE(res, CALCGTSIZE(ALLISTRUE));
res->flag = ALLISTRUE;
retval = (GISTENTRY *) palloc(sizeof(GISTENTRY));
gistentryinit(*retval, PointerGetDatum(res),
entry->rel, entry->page,
entry->offset, FALSE);
PG_RETURN_POINTER(retval);
}
PG_RETURN_POINTER(entry);
}
| Datum g_intbig_consistent | ( | PG_FUNCTION_ARGS | ) |
Definition at line 504 of file _intbig_gist.c.
References _intbig_contains(), _intbig_overlap(), ARRNELEMS, ARRPTR, BooleanSearchStrategy, CHECKARRVALID, DatumGetPointer, GETSIGN, GIST_LEAF, HASH, i, ISALLTRUE, GISTENTRY::key, LOOPBYTE, PG_FREE_IF_COPY, PG_GETARG_ARRAYTYPE_P, PG_GETARG_POINTER, PG_GETARG_UINT16, PG_RETURN_BOOL, RTContainedByStrategyNumber, RTContainsStrategyNumber, RTOldContainedByStrategyNumber, RTOldContainsStrategyNumber, RTOverlapStrategyNumber, RTSameStrategyNumber, and signconsistent().
{
GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
ArrayType *query = PG_GETARG_ARRAYTYPE_P(1);
StrategyNumber strategy = (StrategyNumber) PG_GETARG_UINT16(2);
/* Oid subtype = PG_GETARG_OID(3); */
bool *recheck = (bool *) PG_GETARG_POINTER(4);
bool retval;
/* All cases served by this function are inexact */
*recheck = true;
if (ISALLTRUE(DatumGetPointer(entry->key)))
PG_RETURN_BOOL(true);
if (strategy == BooleanSearchStrategy)
{
retval = signconsistent((QUERYTYPE *) query,
GETSIGN(DatumGetPointer(entry->key)),
false);
PG_FREE_IF_COPY(query, 1);
PG_RETURN_BOOL(retval);
}
CHECKARRVALID(query);
switch (strategy)
{
case RTOverlapStrategyNumber:
retval = _intbig_overlap((GISTTYPE *) DatumGetPointer(entry->key), query);
break;
case RTSameStrategyNumber:
if (GIST_LEAF(entry))
{
int i,
num = ARRNELEMS(query);
int32 *ptr = ARRPTR(query);
BITVEC qp;
BITVECP dq,
de;
memset(qp, 0, sizeof(BITVEC));
while (num--)
{
HASH(qp, *ptr);
ptr++;
}
de = GETSIGN((GISTTYPE *) DatumGetPointer(entry->key));
dq = qp;
retval = true;
LOOPBYTE
{
if (de[i] != dq[i])
{
retval = false;
break;
}
}
}
else
retval = _intbig_contains((GISTTYPE *) DatumGetPointer(entry->key), query);
break;
case RTContainsStrategyNumber:
case RTOldContainsStrategyNumber:
retval = _intbig_contains((GISTTYPE *) DatumGetPointer(entry->key), query);
break;
case RTContainedByStrategyNumber:
case RTOldContainedByStrategyNumber:
if (GIST_LEAF(entry))
{
int i,
num = ARRNELEMS(query);
int32 *ptr = ARRPTR(query);
BITVEC qp;
BITVECP dq,
de;
memset(qp, 0, sizeof(BITVEC));
while (num--)
{
HASH(qp, *ptr);
ptr++;
}
de = GETSIGN((GISTTYPE *) DatumGetPointer(entry->key));
dq = qp;
retval = true;
LOOPBYTE
{
if (de[i] & ~dq[i])
{
retval = false;
break;
}
}
}
else
retval = _intbig_overlap((GISTTYPE *) DatumGetPointer(entry->key), query);
break;
default:
retval = FALSE;
}
PG_FREE_IF_COPY(query, 1);
PG_RETURN_BOOL(retval);
}
| Datum g_intbig_decompress | ( | PG_FUNCTION_ARGS | ) |
Definition at line 262 of file _intbig_gist.c.
References PG_GETARG_DATUM, and PG_RETURN_DATUM.
{
PG_RETURN_DATUM(PG_GETARG_DATUM(0));
}
| Datum g_intbig_penalty | ( | PG_FUNCTION_ARGS | ) |
Definition at line 313 of file _intbig_gist.c.
References DatumGetPointer, hemdist(), GISTENTRY::key, PG_GETARG_POINTER, and PG_RETURN_POINTER.
{
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);
*penalty = hemdist(origval, newval);
PG_RETURN_POINTER(penalty);
}
| Datum g_intbig_picksplit | ( | PG_FUNCTION_ARGS | ) |
Definition at line 340 of file _intbig_gist.c.
References Abs, comparecost(), SPLITCOST::cost, FirstOffsetNumber, GISTTYPE::flag, GETENTRY, GETSIGN, GTHDRSIZE, hemdist(), i, ISALLTRUE, NODE::left, LOOPBYTE, MemSet, GistEntryVector::n, OffsetNumberNext, palloc(), pfree(), PG_GETARG_POINTER, PG_RETURN_POINTER, PointerGetDatum, SPLITCOST::pos, qsort, NODE::right, SET_VARSIZE, SIGLEN, GIST_SPLITVEC::spl_ldatum, GIST_SPLITVEC::spl_left, GIST_SPLITVEC::spl_nleft, GIST_SPLITVEC::spl_nright, GIST_SPLITVEC::spl_rdatum, GIST_SPLITVEC::spl_right, and WISH_F.
{
GistEntryVector *entryvec = (GistEntryVector *) PG_GETARG_POINTER(0);
GIST_SPLITVEC *v = (GIST_SPLITVEC *) PG_GETARG_POINTER(1);
OffsetNumber k,
j;
GISTTYPE *datum_l,
*datum_r;
BITVECP union_l,
union_r;
int32 size_alpha,
size_beta;
int32 size_waste,
waste = -1;
int32 nbytes;
OffsetNumber seed_1 = 0,
seed_2 = 0;
OffsetNumber *left,
*right;
OffsetNumber maxoff;
BITVECP ptr;
int i;
SPLITCOST *costvector;
GISTTYPE *_k,
*_j;
maxoff = entryvec->n - 2;
nbytes = (maxoff + 2) * sizeof(OffsetNumber);
v->spl_left = (OffsetNumber *) palloc(nbytes);
v->spl_right = (OffsetNumber *) palloc(nbytes);
for (k = FirstOffsetNumber; k < maxoff; k = OffsetNumberNext(k))
{
_k = GETENTRY(entryvec, k);
for (j = OffsetNumberNext(k); j <= maxoff; j = OffsetNumberNext(j))
{
size_waste = hemdist(_k, GETENTRY(entryvec, j));
if (size_waste > waste)
{
waste = size_waste;
seed_1 = k;
seed_2 = j;
}
}
}
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 (ISALLTRUE(GETENTRY(entryvec, seed_1)))
{
datum_l = (GISTTYPE *) palloc(GTHDRSIZE);
SET_VARSIZE(datum_l, GTHDRSIZE);
datum_l->flag = ALLISTRUE;
}
else
{
datum_l = (GISTTYPE *) palloc(GTHDRSIZE + SIGLEN);
SET_VARSIZE(datum_l, GTHDRSIZE + SIGLEN);
datum_l->flag = 0;
memcpy((void *) GETSIGN(datum_l), (void *) GETSIGN(GETENTRY(entryvec, seed_1)), sizeof(BITVEC));
}
if (ISALLTRUE(GETENTRY(entryvec, seed_2)))
{
datum_r = (GISTTYPE *) palloc(GTHDRSIZE);
SET_VARSIZE(datum_r, GTHDRSIZE);
datum_r->flag = ALLISTRUE;
}
else
{
datum_r = (GISTTYPE *) palloc(GTHDRSIZE + SIGLEN);
SET_VARSIZE(datum_r, GTHDRSIZE + SIGLEN);
datum_r->flag = 0;
memcpy((void *) GETSIGN(datum_r), (void *) GETSIGN(GETENTRY(entryvec, seed_2)), sizeof(BITVEC));
}
maxoff = OffsetNumberNext(maxoff);
/* sort before ... */
costvector = (SPLITCOST *) palloc(sizeof(SPLITCOST) * maxoff);
for (j = FirstOffsetNumber; j <= maxoff; j = OffsetNumberNext(j))
{
costvector[j - 1].pos = j;
_j = GETENTRY(entryvec, j);
size_alpha = hemdist(datum_l, _j);
size_beta = hemdist(datum_r, _j);
costvector[j - 1].cost = Abs(size_alpha - size_beta);
}
qsort((void *) costvector, maxoff, sizeof(SPLITCOST), comparecost);
union_l = GETSIGN(datum_l);
union_r = GETSIGN(datum_r);
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;
}
_j = GETENTRY(entryvec, j);
size_alpha = hemdist(datum_l, _j);
size_beta = hemdist(datum_r, _j);
if (size_alpha < size_beta + WISH_F(v->spl_nleft, v->spl_nright, 0.00001))
{
if (ISALLTRUE(datum_l) || ISALLTRUE(_j))
{
if (!ISALLTRUE(datum_l))
MemSet((void *) union_l, 0xff, sizeof(BITVEC));
}
else
{
ptr = GETSIGN(_j);
LOOPBYTE
union_l[i] |= ptr[i];
}
*left++ = j;
v->spl_nleft++;
}
else
{
if (ISALLTRUE(datum_r) || ISALLTRUE(_j))
{
if (!ISALLTRUE(datum_r))
MemSet((void *) union_r, 0xff, sizeof(BITVEC));
}
else
{
ptr = GETSIGN(_j);
LOOPBYTE
union_r[i] |= ptr[i];
}
*right++ = j;
v->spl_nright++;
}
}
*right = *left = FirstOffsetNumber;
pfree(costvector);
v->spl_ldatum = PointerGetDatum(datum_l);
v->spl_rdatum = PointerGetDatum(datum_r);
PG_RETURN_POINTER(v);
}
| Datum g_intbig_same | ( | PG_FUNCTION_ARGS | ) |
Definition at line 117 of file _intbig_gist.c.
References GETSIGN, i, ISALLTRUE, LOOPBYTE, PG_GETARG_POINTER, and PG_RETURN_POINTER.
{
GISTTYPE *a = (GISTTYPE *) PG_GETARG_POINTER(0);
GISTTYPE *b = (GISTTYPE *) PG_GETARG_POINTER(1);
bool *result = (bool *) PG_GETARG_POINTER(2);
if (ISALLTRUE(a) && ISALLTRUE(b))
*result = true;
else if (ISALLTRUE(a))
*result = false;
else if (ISALLTRUE(b))
*result = false;
else
{
int32 i;
BITVECP sa = GETSIGN(a),
sb = GETSIGN(b);
*result = true;
LOOPBYTE
{
if (sa[i] != sb[i])
{
*result = false;
break;
}
}
}
PG_RETURN_POINTER(result);
}
| Datum g_intbig_union | ( | PG_FUNCTION_ARGS | ) |
Definition at line 281 of file _intbig_gist.c.
References CALCGTSIZE, GISTTYPE::flag, flag(), GETENTRY, GETSIGN, i, ISALLTRUE, MemSet, GistEntryVector::n, palloc(), PG_GETARG_POINTER, PG_RETURN_POINTER, SET_VARSIZE, and unionkey().
{
GistEntryVector *entryvec = (GistEntryVector *) PG_GETARG_POINTER(0);
int *size = (int *) PG_GETARG_POINTER(1);
BITVEC base;
int32 i,
len;
int32 flag = 0;
GISTTYPE *result;
MemSet((void *) base, 0, sizeof(BITVEC));
for (i = 0; i < entryvec->n; i++)
{
if (unionkey(base, GETENTRY(entryvec, i)))
{
flag = ALLISTRUE;
break;
}
}
len = CALCGTSIZE(flag);
result = (GISTTYPE *) palloc(len);
SET_VARSIZE(result, len);
result->flag = flag;
if (!ISALLTRUE(result))
memcpy((void *) GETSIGN(result), (void *) base, sizeof(BITVEC));
*size = len;
PG_RETURN_POINTER(result);
}
Definition at line 246 of file _intbig_gist.c.
References GETSIGN, hemdistsign(), ISALLTRUE, SIGLENBIT, and sizebitvec().
Referenced by g_intbig_penalty(), and g_intbig_picksplit().
{
if (ISALLTRUE(a))
{
if (ISALLTRUE(b))
return 0;
else
return SIGLENBIT - sizebitvec(GETSIGN(b));
}
else if (ISALLTRUE(b))
return SIGLENBIT - sizebitvec(GETSIGN(a));
return hemdistsign(GETSIGN(a), GETSIGN(b));
}
Definition at line 231 of file _intbig_gist.c.
References i, LOOPBYTE, and number_of_ones.
Referenced by hemdist().
{
int i,
diff,
dist = 0;
LOOPBYTE
{
diff = (unsigned char) (a[i] ^ b[i]);
dist += number_of_ones[diff];
}
return dist;
}
| PG_FUNCTION_INFO_V1 | ( | g_intbig_same | ) |
| PG_FUNCTION_INFO_V1 | ( | g_intbig_picksplit | ) |
| PG_FUNCTION_INFO_V1 | ( | g_intbig_consistent | ) |
| PG_FUNCTION_INFO_V1 | ( | g_intbig_penalty | ) |
| PG_FUNCTION_INFO_V1 | ( | g_intbig_compress | ) |
| PG_FUNCTION_INFO_V1 | ( | _intbig_out | ) |
| PG_FUNCTION_INFO_V1 | ( | _intbig_in | ) |
| PG_FUNCTION_INFO_V1 | ( | g_intbig_union | ) |
| PG_FUNCTION_INFO_V1 | ( | g_intbig_decompress | ) |
Definition at line 220 of file _intbig_gist.c.
References i, LOOPBYTE, and number_of_ones.
Referenced by hemdist().
const uint8 number_of_ones[256] [static] |
{
0, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3, 4,
1, 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5,
1, 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5,
2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6,
1, 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5,
2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6,
2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6,
3, 4, 4, 5, 4, 5, 5, 6, 4, 5, 5, 6, 5, 6, 6, 7,
1, 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5,
2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6,
2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6,
3, 4, 4, 5, 4, 5, 5, 6, 4, 5, 5, 6, 5, 6, 6, 7,
2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6,
3, 4, 4, 5, 4, 5, 5, 6, 4, 5, 5, 6, 5, 6, 6, 7,
3, 4, 4, 5, 4, 5, 5, 6, 4, 5, 5, 6, 5, 6, 6, 7,
4, 5, 5, 6, 5, 6, 6, 7, 5, 6, 6, 7, 6, 7, 7, 8
}
Definition at line 32 of file _intbig_gist.c.
Referenced by hemdistsign(), and sizebitvec().
1.7.1