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- Add aligment of variable data types

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- Add aligment for interval data types
- Avoid floating point overflow in penalty functions
Janko Richter <jankorichter@yahoo.de> and teodor
This commit is contained in:
Teodor Sigaev
2004-06-03 12:26:10 +00:00
parent 921d749bd4
commit 7b81988f9b
17 changed files with 161 additions and 110 deletions
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133
contrib/btree_gist/btree_interval.c
View File

@ -3,8 +3,7 @@
typedef struct
{
Interval lower,
upper;
Interval lower, upper;
} intvKEY;
@ -12,6 +11,7 @@ typedef struct
** Interval ops
*/
PG_FUNCTION_INFO_V1(gbt_intv_compress);
PG_FUNCTION_INFO_V1(gbt_intv_decompress);
PG_FUNCTION_INFO_V1(gbt_intv_union);
PG_FUNCTION_INFO_V1(gbt_intv_picksplit);
PG_FUNCTION_INFO_V1(gbt_intv_consistent);
@ -19,6 +19,7 @@ PG_FUNCTION_INFO_V1(gbt_intv_penalty);
PG_FUNCTION_INFO_V1(gbt_intv_same);
Datum gbt_intv_compress(PG_FUNCTION_ARGS);
Datum gbt_intv_decompress(PG_FUNCTION_ARGS);
Datum gbt_intv_union(PG_FUNCTION_ARGS);
Datum gbt_intv_picksplit(PG_FUNCTION_ARGS);
Datum gbt_intv_consistent(PG_FUNCTION_ARGS);
@ -28,27 +29,27 @@ Datum gbt_intv_same(PG_FUNCTION_ARGS);
static bool gbt_intvgt (const void *a, const void *b)
{
return DirectFunctionCall2 ( interval_gt , IntervalPGetDatum ( a ) , IntervalPGetDatum ( b ) );
return DatumGetBool(DirectFunctionCall2 ( interval_gt , IntervalPGetDatum ( a ) , IntervalPGetDatum ( b ) ));
}
static bool gbt_intvge (const void *a, const void *b)
{
return DirectFunctionCall2 ( interval_ge , IntervalPGetDatum ( a ) , IntervalPGetDatum ( b ) );
return DatumGetBool(DirectFunctionCall2 ( interval_ge , IntervalPGetDatum ( a ) , IntervalPGetDatum ( b ) ));
}
static bool gbt_intveq (const void *a, const void *b)
{
return DirectFunctionCall2 ( interval_eq , IntervalPGetDatum ( a ) , IntervalPGetDatum ( b ) );
return DatumGetBool(DirectFunctionCall2 ( interval_eq , IntervalPGetDatum ( a ) , IntervalPGetDatum ( b ) ));
}
static bool gbt_intvle (const void *a, const void *b)
{
return DirectFunctionCall2 ( interval_le , IntervalPGetDatum ( a ) , IntervalPGetDatum ( b ) );
return DatumGetBool(DirectFunctionCall2 ( interval_le , IntervalPGetDatum ( a ) , IntervalPGetDatum ( b ) ));
}
static bool gbt_intvlt (const void *a, const void *b)
{
return DirectFunctionCall2 ( interval_lt , IntervalPGetDatum ( a ) , IntervalPGetDatum ( b ) );
return DatumGetBool(DirectFunctionCall2 ( interval_lt , IntervalPGetDatum ( a ) , IntervalPGetDatum ( b ) ));
}
static int
@ -56,12 +57,32 @@ gbt_intvkey_cmp(const void *a, const void *b)
{
return DatumGetInt32 (
DirectFunctionCall2 ( interval_cmp ,
IntervalPGetDatum(&((Nsrt *) a)->t[0]) ,
IntervalPGetDatum(&((Nsrt *) b)->t[0])
IntervalPGetDatum(((Nsrt *) a)->t) ,
IntervalPGetDatum(((Nsrt *) b)->t)
)
);
}
static double intr2num ( const Interval * i )
{
double ret = 0.0;
struct pg_tm tm;
fsec_t fsec;
interval2tm( *i, &tm, &fsec);
ret += ( tm.tm_year * 360.0 * 86400.0 ) ;
ret += ( tm.tm_mon * 12.0 * 86400.0 ) ;
ret += ( tm.tm_mday * 86400.0 ) ;
ret += ( tm.tm_hour * 3600.0 ) ;
ret += ( tm.tm_min * 60.0 ) ;
ret += ( tm.tm_sec ) ;
ret += ( fsec / 1000000.0 );
return ( ret );
}
#define INTERVALSIZE 12
static const gbtree_ninfo tinfo =
{
gbt_t_intv,
@ -84,10 +105,51 @@ Datum
gbt_intv_compress(PG_FUNCTION_ARGS)
{
GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
GISTENTRY *retval = NULL;
PG_RETURN_POINTER( gbt_num_compress( retval , entry , &tinfo ));
GISTENTRY *retval = entry;
if ( entry->leafkey || INTERVALSIZE != sizeof(Interval) ) {
char *r = ( char * ) palloc(2 * INTERVALSIZE);
retval = palloc(sizeof(GISTENTRY));
if ( entry->leafkey ) {
Interval *key = DatumGetIntervalP(entry->key);
memcpy( (void*) r , (void*)key, INTERVALSIZE);
memcpy( (void*)(r + INTERVALSIZE), (void*)key, INTERVALSIZE);
} else {
intvKEY *key = ( intvKEY * ) DatumGetPointer(entry->key);
memcpy(r, &key->lower, INTERVALSIZE);
memcpy(r + INTERVALSIZE, &key->upper, INTERVALSIZE);
}
gistentryinit(*retval, PointerGetDatum(r),
entry->rel, entry->page,
entry->offset, 2 * INTERVALSIZE, FALSE);
}
PG_RETURN_POINTER(retval);
}
Datum
gbt_intv_decompress(PG_FUNCTION_ARGS)
{
GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
GISTENTRY *retval = entry;
if ( INTERVALSIZE != sizeof(Interval) ) {
intvKEY *r = palloc(sizeof(intvKEY));
char *key = DatumGetPointer(entry->key);
retval = palloc(sizeof(GISTENTRY));
memcpy( &r->lower, key, INTERVALSIZE);
memcpy( &r->upper, key+ INTERVALSIZE, INTERVALSIZE);
gistentryinit(*retval, PointerGetDatum(r),
entry->rel, entry->page,
entry->offset, sizeof(intvKEY), FALSE);
}
PG_RETURN_POINTER(retval);
}
Datum
gbt_intv_consistent(PG_FUNCTION_ARGS)
@ -97,6 +159,7 @@ gbt_intv_consistent(PG_FUNCTION_ARGS)
intvKEY *kkk = (intvKEY *) DatumGetPointer(entry->key);
GBT_NUMKEY_R key ;
StrategyNumber strategy = (StrategyNumber) PG_GETARG_UINT16(2);
key.lower = (GBT_NUMKEY*) &kkk->lower ;
key.upper = (GBT_NUMKEY*) &kkk->upper ;
@ -121,56 +184,26 @@ gbt_intv_penalty(PG_FUNCTION_ARGS)
{
intvKEY *origentry = (intvKEY *) DatumGetPointer(((GISTENTRY *) PG_GETARG_POINTER(0))->key);
intvKEY *newentry = (intvKEY *) DatumGetPointer(((GISTENTRY *) PG_GETARG_POINTER(1))->key);
float *result = (float *) PG_GETARG_POINTER(2);
Interval *intr;
#ifdef HAVE_INT64_TIMESTAMP
int64 res;
#else
double res;
#endif
float *result = (float *) PG_GETARG_POINTER(2);
double iorg[2], inew[2], res;
intr = DatumGetIntervalP(DirectFunctionCall2(
interval_mi,
IntervalPGetDatum(&newentry->upper),
IntervalPGetDatum(&origentry->upper)
));
iorg[0] = intr2num ( &origentry->lower );
iorg[1] = intr2num ( &origentry->upper );
inew[0] = intr2num ( &newentry->lower );
inew[1] = intr2num ( &newentry->upper );
/* see interval_larger */
res = Max(intr->time + intr->month * (30 * 86400), 0);
pfree(intr);
intr = DatumGetIntervalP(DirectFunctionCall2(
interval_mi,
IntervalPGetDatum(&origentry->lower),
IntervalPGetDatum(&newentry->lower)
));
/* see interval_larger */
res += Max(intr->time + intr->month * (30 * 86400), 0);
pfree(intr);
penalty_range_enlarge ( iorg[0], iorg[1], inew[0], inew[1] );
*result = 0.0;
if ( res > 0 ){
intr = DatumGetIntervalP(DirectFunctionCall2(
interval_mi,
IntervalPGetDatum(&origentry->upper),
IntervalPGetDatum(&origentry->lower)
));
*result += FLT_MIN ;
*result += (float) ( res / ( (double) ( res + intr->time + intr->month * (30 * 86400) ) ) );
*result += (float) ( res / ( res + iorg[1] - iorg[0] ) );
*result *= ( FLT_MAX / ( ( (GISTENTRY *) PG_GETARG_POINTER(0))->rel->rd_att->natts + 1 ) );
pfree ( intr );
}
PG_RETURN_POINTER(result);
}
Datum