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postgres/contrib/btree_gist/btree_ts.c
Andres Freund 62e2a8dc2c Define integer limits independently from the system definitions. 
In 83ff1618 we defined integer limits iff they're not provided by the
system. That turns out not to be the greatest idea because there's
different ways some datatypes can be represented. E.g. on OSX PG's 64bit
datatype will be a 'long int', but OSX unconditionally uses 'long
long'. That disparity then can lead to warnings, e.g. around printf
formats.

One way to fix that would be to back int64 using stdint.h's
int64_t. While a good idea it's not that easy to implement. We would
e.g. need to include stdint.h in our external headers, which we don't
today. Also computing the correct int64 printf formats in that case is
nontrivial.

Instead simply prefix the integer limits with PG_ and define them
unconditionally. I've adjusted all the references to them in code, but
not the ones in comments; the latter seems unnecessary to me.

Discussion: 20150331141423.GK4878@alap3.anarazel.de
2015-04-02 17:43:35 +02:00

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/*
* contrib/btree_gist/btree_ts.c
*/
#include "postgres.h"
#include "btree_gist.h"
#include "btree_utils_num.h"
#include "utils/builtins.h"
#include "utils/datetime.h"
typedef struct
{
Timestamp lower;
Timestamp upper;
} tsKEY;
/*
** timestamp ops
*/
PG_FUNCTION_INFO_V1(gbt_ts_compress);
PG_FUNCTION_INFO_V1(gbt_tstz_compress);
PG_FUNCTION_INFO_V1(gbt_ts_fetch);
PG_FUNCTION_INFO_V1(gbt_ts_union);
PG_FUNCTION_INFO_V1(gbt_ts_picksplit);
PG_FUNCTION_INFO_V1(gbt_ts_consistent);
PG_FUNCTION_INFO_V1(gbt_ts_distance);
PG_FUNCTION_INFO_V1(gbt_tstz_consistent);
PG_FUNCTION_INFO_V1(gbt_tstz_distance);
PG_FUNCTION_INFO_V1(gbt_ts_penalty);
PG_FUNCTION_INFO_V1(gbt_ts_same);
#ifdef USE_FLOAT8_BYVAL
#define TimestampGetDatumFast(X) TimestampGetDatum(X)
#else
#define TimestampGetDatumFast(X) PointerGetDatum(&(X))
#endif
static bool
gbt_tsgt(const void *a, const void *b)
{
const Timestamp *aa = (const Timestamp *) a;
const Timestamp *bb = (const Timestamp *) b;
return DatumGetBool(DirectFunctionCall2(timestamp_gt,
TimestampGetDatumFast(*aa),
TimestampGetDatumFast(*bb)));
}
static bool
gbt_tsge(const void *a, const void *b)
{
const Timestamp *aa = (const Timestamp *) a;
const Timestamp *bb = (const Timestamp *) b;
return DatumGetBool(DirectFunctionCall2(timestamp_ge,
TimestampGetDatumFast(*aa),
TimestampGetDatumFast(*bb)));
}
static bool
gbt_tseq(const void *a, const void *b)
{
const Timestamp *aa = (const Timestamp *) a;
const Timestamp *bb = (const Timestamp *) b;
return DatumGetBool(DirectFunctionCall2(timestamp_eq,
TimestampGetDatumFast(*aa),
TimestampGetDatumFast(*bb)));
}
static bool
gbt_tsle(const void *a, const void *b)
{
const Timestamp *aa = (const Timestamp *) a;
const Timestamp *bb = (const Timestamp *) b;
return DatumGetBool(DirectFunctionCall2(timestamp_le,
TimestampGetDatumFast(*aa),
TimestampGetDatumFast(*bb)));
}
static bool
gbt_tslt(const void *a, const void *b)
{
const Timestamp *aa = (const Timestamp *) a;
const Timestamp *bb = (const Timestamp *) b;
return DatumGetBool(DirectFunctionCall2(timestamp_lt,
TimestampGetDatumFast(*aa),
TimestampGetDatumFast(*bb)));
}
static int
gbt_tskey_cmp(const void *a, const void *b)
{
tsKEY *ia = (tsKEY *) (((const Nsrt *) a)->t);
tsKEY *ib = (tsKEY *) (((const Nsrt *) b)->t);
int res;
res = DatumGetInt32(DirectFunctionCall2(timestamp_cmp, TimestampGetDatumFast(ia->lower), TimestampGetDatumFast(ib->lower)));
if (res == 0)
return DatumGetInt32(DirectFunctionCall2(timestamp_cmp, TimestampGetDatumFast(ia->upper), TimestampGetDatumFast(ib->upper)));
return res;
}
static float8
gbt_ts_dist(const void *a, const void *b)
{
const Timestamp *aa = (const Timestamp *) a;
const Timestamp *bb = (const Timestamp *) b;
Interval *i;
if (TIMESTAMP_NOT_FINITE(*aa) || TIMESTAMP_NOT_FINITE(*bb))
return get_float8_infinity();
i = DatumGetIntervalP(DirectFunctionCall2(timestamp_mi,
TimestampGetDatumFast(*aa),
TimestampGetDatumFast(*bb)));
return (float8) Abs(INTERVAL_TO_SEC(i));
}
static const gbtree_ninfo tinfo =
{
gbt_t_ts,
sizeof(Timestamp),
16, /* sizeof(gbtreekey16) */
gbt_tsgt,
gbt_tsge,
gbt_tseq,
gbt_tsle,
gbt_tslt,
gbt_tskey_cmp,
gbt_ts_dist
};
PG_FUNCTION_INFO_V1(ts_dist);
Datum
ts_dist(PG_FUNCTION_ARGS)
{
Timestamp a = PG_GETARG_TIMESTAMP(0);
Timestamp b = PG_GETARG_TIMESTAMP(1);
Interval *r;
if (TIMESTAMP_NOT_FINITE(a) || TIMESTAMP_NOT_FINITE(b))
{
Interval *p = palloc(sizeof(Interval));
p->day = INT_MAX;
p->month = INT_MAX;
#ifdef HAVE_INT64_TIMESTAMP
p->time = PG_INT64_MAX;
#else
p->time = DBL_MAX;
#endif
PG_RETURN_INTERVAL_P(p);
}
else
r = DatumGetIntervalP(DirectFunctionCall2(timestamp_mi,
PG_GETARG_DATUM(0),
PG_GETARG_DATUM(1)));
PG_RETURN_INTERVAL_P(abs_interval(r));
}
PG_FUNCTION_INFO_V1(tstz_dist);
Datum
tstz_dist(PG_FUNCTION_ARGS)
{
TimestampTz a = PG_GETARG_TIMESTAMPTZ(0);
TimestampTz b = PG_GETARG_TIMESTAMPTZ(1);
Interval *r;
if (TIMESTAMP_NOT_FINITE(a) || TIMESTAMP_NOT_FINITE(b))
{
Interval *p = palloc(sizeof(Interval));
p->day = INT_MAX;
p->month = INT_MAX;
#ifdef HAVE_INT64_TIMESTAMP
p->time = PG_INT64_MAX;
#else
p->time = DBL_MAX;
#endif
PG_RETURN_INTERVAL_P(p);
}
r = DatumGetIntervalP(DirectFunctionCall2(timestamp_mi,
PG_GETARG_DATUM(0),
PG_GETARG_DATUM(1)));
PG_RETURN_INTERVAL_P(abs_interval(r));
}
/**************************************************
* timestamp ops
**************************************************/
static inline Timestamp
tstz_to_ts_gmt(TimestampTz ts)
{
/* No timezone correction is needed, since GMT is offset 0 by definition */
return (Timestamp) ts;
}
Datum
gbt_ts_compress(PG_FUNCTION_ARGS)
{
GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
PG_RETURN_POINTER(gbt_num_compress(entry, &tinfo));
}
Datum
gbt_tstz_compress(PG_FUNCTION_ARGS)
{
GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
GISTENTRY *retval;
if (entry->leafkey)
{
tsKEY *r = (tsKEY *) palloc(sizeof(tsKEY));
TimestampTz ts = DatumGetTimestampTz(entry->key);
Timestamp gmt;
gmt = tstz_to_ts_gmt(ts);
retval = palloc(sizeof(GISTENTRY));
r->lower = r->upper = gmt;
gistentryinit(*retval, PointerGetDatum(r),
entry->rel, entry->page,
entry->offset, FALSE);
}
else
retval = entry;
PG_RETURN_POINTER(retval);
}
Datum
gbt_ts_fetch(PG_FUNCTION_ARGS)
{
GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
PG_RETURN_POINTER(gbt_num_fetch(entry, &tinfo));
}
Datum
gbt_ts_consistent(PG_FUNCTION_ARGS)
{
GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
Timestamp query = PG_GETARG_TIMESTAMP(1);
StrategyNumber strategy = (StrategyNumber) PG_GETARG_UINT16(2);
/* Oid subtype = PG_GETARG_OID(3); */
bool *recheck = (bool *) PG_GETARG_POINTER(4);
tsKEY *kkk = (tsKEY *) DatumGetPointer(entry->key);
GBT_NUMKEY_R key;
/* All cases served by this function are exact */
*recheck = false;
key.lower = (GBT_NUMKEY *) &kkk->lower;
key.upper = (GBT_NUMKEY *) &kkk->upper;
PG_RETURN_BOOL(
gbt_num_consistent(&key, (void *) &query, &strategy, GIST_LEAF(entry), &tinfo)
);
}
Datum
gbt_ts_distance(PG_FUNCTION_ARGS)
{
GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
Timestamp query = PG_GETARG_TIMESTAMP(1);
/* Oid subtype = PG_GETARG_OID(3); */
tsKEY *kkk = (tsKEY *) DatumGetPointer(entry->key);
GBT_NUMKEY_R key;
key.lower = (GBT_NUMKEY *) &kkk->lower;
key.upper = (GBT_NUMKEY *) &kkk->upper;
PG_RETURN_FLOAT8(
gbt_num_distance(&key, (void *) &query, GIST_LEAF(entry), &tinfo)
);
}
Datum
gbt_tstz_consistent(PG_FUNCTION_ARGS)
{
GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
TimestampTz query = PG_GETARG_TIMESTAMPTZ(1);
StrategyNumber strategy = (StrategyNumber) PG_GETARG_UINT16(2);
/* Oid subtype = PG_GETARG_OID(3); */
bool *recheck = (bool *) PG_GETARG_POINTER(4);
char *kkk = (char *) DatumGetPointer(entry->key);
GBT_NUMKEY_R key;
Timestamp qqq;
/* All cases served by this function are exact */
*recheck = false;
key.lower = (GBT_NUMKEY *) &kkk[0];
key.upper = (GBT_NUMKEY *) &kkk[MAXALIGN(tinfo.size)];
qqq = tstz_to_ts_gmt(query);
PG_RETURN_BOOL(
gbt_num_consistent(&key, (void *) &qqq, &strategy, GIST_LEAF(entry), &tinfo)
);
}
Datum
gbt_tstz_distance(PG_FUNCTION_ARGS)
{
GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
TimestampTz query = PG_GETARG_TIMESTAMPTZ(1);
/* Oid subtype = PG_GETARG_OID(3); */
char *kkk = (char *) DatumGetPointer(entry->key);
GBT_NUMKEY_R key;
Timestamp qqq;
key.lower = (GBT_NUMKEY *) &kkk[0];
key.upper = (GBT_NUMKEY *) &kkk[MAXALIGN(tinfo.size)];
qqq = tstz_to_ts_gmt(query);
PG_RETURN_FLOAT8(
gbt_num_distance(&key, (void *) &qqq, GIST_LEAF(entry), &tinfo)
);
}
Datum
gbt_ts_union(PG_FUNCTION_ARGS)
{
GistEntryVector *entryvec = (GistEntryVector *) PG_GETARG_POINTER(0);
void *out = palloc(sizeof(tsKEY));
*(int *) PG_GETARG_POINTER(1) = sizeof(tsKEY);
PG_RETURN_POINTER(gbt_num_union((void *) out, entryvec, &tinfo));
}
#define penalty_check_max_float(val) do { \
if ( val > FLT_MAX ) \
val = FLT_MAX; \
if ( val < -FLT_MAX ) \
val = -FLT_MAX; \
} while(false);
Datum
gbt_ts_penalty(PG_FUNCTION_ARGS)
{
tsKEY *origentry = (tsKEY *) DatumGetPointer(((GISTENTRY *) PG_GETARG_POINTER(0))->key);
tsKEY *newentry = (tsKEY *) DatumGetPointer(((GISTENTRY *) PG_GETARG_POINTER(1))->key);
float *result = (float *) PG_GETARG_POINTER(2);
double orgdbl[2],
newdbl[2];
/*
* We are allways using "double" timestamps here. Precision should be good
* enough.
*/
orgdbl[0] = ((double) origentry->lower);
orgdbl[1] = ((double) origentry->upper);
newdbl[0] = ((double) newentry->lower);
newdbl[1] = ((double) newentry->upper);
penalty_check_max_float(orgdbl[0]);
penalty_check_max_float(orgdbl[1]);
penalty_check_max_float(newdbl[0]);
penalty_check_max_float(newdbl[1]);
penalty_num(result, orgdbl[0], orgdbl[1], newdbl[0], newdbl[1]);
PG_RETURN_POINTER(result);
}
Datum
gbt_ts_picksplit(PG_FUNCTION_ARGS)
{
PG_RETURN_POINTER(gbt_num_picksplit(
(GistEntryVector *) PG_GETARG_POINTER(0),
(GIST_SPLITVEC *) PG_GETARG_POINTER(1),
&tinfo
));
}
Datum
gbt_ts_same(PG_FUNCTION_ARGS)
{
tsKEY *b1 = (tsKEY *) PG_GETARG_POINTER(0);
tsKEY *b2 = (tsKEY *) PG_GETARG_POINTER(1);
bool *result = (bool *) PG_GETARG_POINTER(2);
*result = gbt_num_same((void *) b1, (void *) b2, &tinfo);
PG_RETURN_POINTER(result);
}
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