mirror of
https://git.postgresql.org/git/postgresql.git
synced 2024-08-22 00:13:22 +02:00
Because of gcc -Wmissing-prototypes, all functions in dynamically loadable modules must have a separate prototype declaration. This is meant to detect global functions that are not declared in header files, but in cases where the function is called via dfmgr, this is redundant. Besides filling up space with boilerplate, this is a frequent source of compiler warnings in extension modules. We can fix that by creating the function prototype as part of the PG_FUNCTION_INFO_V1 macro, which such modules have to use anyway. That makes the code of modules cleaner, because there is one less place where the entry points have to be listed, and creates an additional check that functions have the right prototype. Remove now redundant prototypes from contrib and other modules.
602 lines
12 KiB
C
602 lines
12 KiB
C
/*
|
|
* contrib/intarray/_intbig_gist.c
|
|
*/
|
|
#include "postgres.h"
|
|
|
|
#include "access/gist.h"
|
|
#include "access/skey.h"
|
|
|
|
#include "_int.h"
|
|
|
|
#define GETENTRY(vec,pos) ((GISTTYPE *) DatumGetPointer((vec)->vector[(pos)].key))
|
|
/*
|
|
** _intbig methods
|
|
*/
|
|
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);
|
|
|
|
/* Number of one-bits in an unsigned byte */
|
|
static const uint8 number_of_ones[256] = {
|
|
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
|
|
};
|
|
|
|
PG_FUNCTION_INFO_V1(_intbig_in);
|
|
PG_FUNCTION_INFO_V1(_intbig_out);
|
|
|
|
Datum
|
|
_intbig_in(PG_FUNCTION_ARGS)
|
|
{
|
|
ereport(ERROR,
|
|
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
|
|
errmsg("_intbig_in() not implemented")));
|
|
PG_RETURN_DATUM(0);
|
|
}
|
|
|
|
Datum
|
|
_intbig_out(PG_FUNCTION_ARGS)
|
|
{
|
|
ereport(ERROR,
|
|
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
|
|
errmsg("_intbig_out() not implemented")));
|
|
PG_RETURN_DATUM(0);
|
|
}
|
|
|
|
|
|
/*********************************************************************
|
|
** intbig functions
|
|
*********************************************************************/
|
|
static bool
|
|
_intbig_overlap(GISTTYPE *a, ArrayType *b)
|
|
{
|
|
int num = ARRNELEMS(b);
|
|
int32 *ptr = ARRPTR(b);
|
|
|
|
CHECKARRVALID(b);
|
|
|
|
while (num--)
|
|
{
|
|
if (GETBIT(GETSIGN(a), HASHVAL(*ptr)))
|
|
return true;
|
|
ptr++;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
static bool
|
|
_intbig_contains(GISTTYPE *a, ArrayType *b)
|
|
{
|
|
int num = ARRNELEMS(b);
|
|
int32 *ptr = ARRPTR(b);
|
|
|
|
CHECKARRVALID(b);
|
|
|
|
while (num--)
|
|
{
|
|
if (!GETBIT(GETSIGN(a), HASHVAL(*ptr)))
|
|
return false;
|
|
ptr++;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
Datum
|
|
g_intbig_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 (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_compress(PG_FUNCTION_ARGS)
|
|
{
|
|
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);
|
|
}
|
|
|
|
|
|
static int32
|
|
sizebitvec(BITVECP sign)
|
|
{
|
|
int32 size = 0,
|
|
i;
|
|
|
|
LOOPBYTE
|
|
size += number_of_ones[(unsigned char) sign[i]];
|
|
return size;
|
|
}
|
|
|
|
static int
|
|
hemdistsign(BITVECP a, BITVECP b)
|
|
{
|
|
int i,
|
|
diff,
|
|
dist = 0;
|
|
|
|
LOOPBYTE
|
|
{
|
|
diff = (unsigned char) (a[i] ^ b[i]);
|
|
dist += number_of_ones[diff];
|
|
}
|
|
return dist;
|
|
}
|
|
|
|
static int
|
|
hemdist(GISTTYPE *a, GISTTYPE *b)
|
|
{
|
|
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));
|
|
}
|
|
|
|
Datum
|
|
g_intbig_decompress(PG_FUNCTION_ARGS)
|
|
{
|
|
PG_RETURN_DATUM(PG_GETARG_DATUM(0));
|
|
}
|
|
|
|
static int32
|
|
unionkey(BITVECP sbase, GISTTYPE *add)
|
|
{
|
|
int32 i;
|
|
BITVECP sadd = GETSIGN(add);
|
|
|
|
if (ISALLTRUE(add))
|
|
return 1;
|
|
LOOPBYTE
|
|
sbase[i] |= sadd[i];
|
|
return 0;
|
|
}
|
|
|
|
Datum
|
|
g_intbig_union(PG_FUNCTION_ARGS)
|
|
{
|
|
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);
|
|
}
|
|
|
|
Datum
|
|
g_intbig_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);
|
|
|
|
*penalty = hemdist(origval, newval);
|
|
PG_RETURN_POINTER(penalty);
|
|
}
|
|
|
|
|
|
typedef struct
|
|
{
|
|
OffsetNumber pos;
|
|
int32 cost;
|
|
} SPLITCOST;
|
|
|
|
static int
|
|
comparecost(const void *a, const void *b)
|
|
{
|
|
return ((const SPLITCOST *) a)->cost - ((const SPLITCOST *) b)->cost;
|
|
}
|
|
|
|
|
|
Datum
|
|
g_intbig_picksplit(PG_FUNCTION_ARGS)
|
|
{
|
|
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_consistent(PG_FUNCTION_ARGS)
|
|
{
|
|
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);
|
|
}
|