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Allow float8, int8, and related datatypes to be passed by value on machines

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where Datum is 8 bytes wide.  Since this will break old-style C functions
(those still using version 0 calling convention) that have arguments or
results of these types, provide a configure option to disable it and retain
the old pass-by-reference behavior.  Likewise, provide a configure option
to disable the recently-committed float4 pass-by-value change.

Zoltan Boszormenyi, plus configurability stuff by me.
This commit is contained in:
Tom Lane
2008-04-21 00:26:47 +00:00
parent be939544a6
commit 8472bf7a73
36 changed files with 661 additions and 243 deletions
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64
contrib/btree_gist/btree_time.c
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@ -31,46 +31,66 @@ Datum gbt_time_penalty(PG_FUNCTION_ARGS);
Datum gbt_time_same(PG_FUNCTION_ARGS);
#define P_TimeADTGetDatum(x) PointerGetDatum( &(x) )
#ifdef USE_FLOAT8_BYVAL
#define TimeADTGetDatumFast(X) TimeADTGetDatum(X)
#else
#define TimeADTGetDatumFast(X) PointerGetDatum(&(X))
#endif
static bool
gbt_timegt(const void *a, const void *b)
{
return DatumGetBool(
DirectFunctionCall2(time_gt, PointerGetDatum(a), PointerGetDatum(b))
);
const TimeADT *aa = (const TimeADT *) a;
const TimeADT *bb = (const TimeADT *) b;
return DatumGetBool(DirectFunctionCall2(time_gt,
TimeADTGetDatumFast(*aa),
TimeADTGetDatumFast(*bb)));
}
static bool
gbt_timege(const void *a, const void *b)
{
return DatumGetBool(
DirectFunctionCall2(time_ge, PointerGetDatum(a), PointerGetDatum(b))
);
const TimeADT *aa = (const TimeADT *) a;
const TimeADT *bb = (const TimeADT *) b;
return DatumGetBool(DirectFunctionCall2(time_ge,
TimeADTGetDatumFast(*aa),
TimeADTGetDatumFast(*bb)));
}
static bool
gbt_timeeq(const void *a, const void *b)
{
return DatumGetBool(
DirectFunctionCall2(time_eq, PointerGetDatum(a), PointerGetDatum(b))
);
const TimeADT *aa = (const TimeADT *) a;
const TimeADT *bb = (const TimeADT *) b;
return DatumGetBool(DirectFunctionCall2(time_eq,
TimeADTGetDatumFast(*aa),
TimeADTGetDatumFast(*bb)));
}
static bool
gbt_timele(const void *a, const void *b)
{
return DatumGetBool(
DirectFunctionCall2(time_le, PointerGetDatum(a), PointerGetDatum(b))
);
const TimeADT *aa = (const TimeADT *) a;
const TimeADT *bb = (const TimeADT *) b;
return DatumGetBool(DirectFunctionCall2(time_le,
TimeADTGetDatumFast(*aa),
TimeADTGetDatumFast(*bb)));
}
static bool
gbt_timelt(const void *a, const void *b)
{
return DatumGetBool(
DirectFunctionCall2(time_lt, PointerGetDatum(a), PointerGetDatum(b))
);
const TimeADT *aa = (const TimeADT *) a;
const TimeADT *bb = (const TimeADT *) b;
return DatumGetBool(DirectFunctionCall2(time_lt,
TimeADTGetDatumFast(*aa),
TimeADTGetDatumFast(*bb)));
}
@ -221,15 +241,15 @@ gbt_time_penalty(PG_FUNCTION_ARGS)
intr = DatumGetIntervalP(DirectFunctionCall2(
time_mi_time,
P_TimeADTGetDatum(newentry->upper),
P_TimeADTGetDatum(origentry->upper)));
TimeADTGetDatumFast(newentry->upper),
TimeADTGetDatumFast(origentry->upper)));
res = INTERVAL_TO_SEC(intr);
res = Max(res, 0);
intr = DatumGetIntervalP(DirectFunctionCall2(
time_mi_time,
P_TimeADTGetDatum(origentry->lower),
P_TimeADTGetDatum(newentry->lower)));
TimeADTGetDatumFast(origentry->lower),
TimeADTGetDatumFast(newentry->lower)));
res2 = INTERVAL_TO_SEC(intr);
res2 = Max(res2, 0);
@ -241,8 +261,8 @@ gbt_time_penalty(PG_FUNCTION_ARGS)
{
intr = DatumGetIntervalP(DirectFunctionCall2(
time_mi_time,
P_TimeADTGetDatum(origentry->upper),
P_TimeADTGetDatum(origentry->lower)));
TimeADTGetDatumFast(origentry->upper),
TimeADTGetDatumFast(origentry->lower)));
*result += FLT_MIN;
*result += (float) (res / (res + INTERVAL_TO_SEC(intr)));
*result *= (FLT_MAX / (((GISTENTRY *) PG_GETARG_POINTER(0))->rel->rd_att->natts + 1));