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Convert macros to static inline functions (tupmacs.h)

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Reviewed-by: Amul Sul <sulamul@gmail.com>
Discussion: https://www.postgresql.org/message-id/flat/5b558da8-99fb-0a99-83dd-f72f05388517%40enterprisedb.com
This commit is contained in:
Peter Eisentraut 2022-07-18 07:43:39 +02:00
parent 8cf64d35ea
commit f58d7073b7
2 changed files with 58 additions and 98 deletions
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2
src/include/access/itup.h
View File

@ -114,7 +114,7 @@ typedef IndexAttributeBitMapData * IndexAttributeBitMap;
) \
: \
( \
(att_isnull((attnum)-1, (char *)(tup) + sizeof(IndexTupleData))) ? \
(att_isnull((attnum)-1, (bits8 *)(tup) + sizeof(IndexTupleData))) ? \
( \
*(isnull) = true, \
(Datum)NULL \

154
src/include/access/tupmacs.h
View File

@ -22,8 +22,13 @@
* Note that a 0 in the null bitmap indicates a null, while 1 indicates
* non-null.
*/
#define att_isnull(ATT, BITS) (!((BITS)[(ATT) >> 3] & (1 << ((ATT) & 0x07))))
static inline bool
att_isnull(int ATT, const bits8 *BITS)
{
return !(BITS[ATT >> 3] & (1 << (ATT & 0x07)));
}
#ifndef FRONTEND
/*
* Given a Form_pg_attribute and a pointer into a tuple's data area,
* return the correct value or pointer.
@ -43,56 +48,32 @@
/*
* Same, but work from byval/len parameters rather than Form_pg_attribute.
*/
static inline Datum
fetch_att(const void *T, bool attbyval, int attlen)
{
if (attbyval)
{
switch (attlen)
{
case sizeof(char):
return CharGetDatum(*((const char *) T));
case sizeof(int16):
return Int16GetDatum(*((const int16 *) T));
case sizeof(int32):
return Int32GetDatum(*((const int32 *) T));
#if SIZEOF_DATUM == 8
#define fetch_att(T,attbyval,attlen) \
( \
(attbyval) ? \
( \
(attlen) == (int) sizeof(Datum) ? \
*((Datum *)(T)) \
: \
( \
(attlen) == (int) sizeof(int32) ? \
Int32GetDatum(*((int32 *)(T))) \
: \
( \
(attlen) == (int) sizeof(int16) ? \
Int16GetDatum(*((int16 *)(T))) \
: \
( \
AssertMacro((attlen) == 1), \
CharGetDatum(*((char *)(T))) \
) \
) \
) \
) \
: \
PointerGetDatum((char *) (T)) \
)
#else /* SIZEOF_DATUM != 8 */
#define fetch_att(T,attbyval,attlen) \
( \
(attbyval) ? \
( \
(attlen) == (int) sizeof(int32) ? \
Int32GetDatum(*((int32 *)(T))) \
: \
( \
(attlen) == (int) sizeof(int16) ? \
Int16GetDatum(*((int16 *)(T))) \
: \
( \
AssertMacro((attlen) == 1), \
CharGetDatum(*((char *)(T))) \
) \
) \
) \
: \
PointerGetDatum((char *) (T)) \
)
#endif /* SIZEOF_DATUM == 8 */
case sizeof(Datum):
return *((const Datum *) T);
#endif
default:
elog(ERROR, "unsupported byval length: %d", attlen);
return 0;
}
}
else
return PointerGetDatum(T);
}
#endif /* FRONTEND */
/*
* att_align_datum aligns the given offset as needed for a datum of alignment
@ -190,58 +171,37 @@
)) \
)
#ifndef FRONTEND
/*
* store_att_byval is a partial inverse of fetch_att: store a given Datum
* value into a tuple data area at the specified address. However, it only
* handles the byval case, because in typical usage the caller needs to
* distinguish by-val and by-ref cases anyway, and so a do-it-all macro
* distinguish by-val and by-ref cases anyway, and so a do-it-all function
* wouldn't be convenient.
*/
static inline void
store_att_byval(void *T, Datum newdatum, int attlen)
{
switch (attlen)
{
case sizeof(char):
*(char *) T = DatumGetChar(newdatum);
break;
case sizeof(int16):
*(int16 *) T = DatumGetInt16(newdatum);
break;
case sizeof(int32):
*(int32 *) T = DatumGetInt32(newdatum);
break;
#if SIZEOF_DATUM == 8
#define store_att_byval(T,newdatum,attlen) \
do { \
switch (attlen) \
{ \
case sizeof(char): \
*(char *) (T) = DatumGetChar(newdatum); \
break; \
case sizeof(int16): \
*(int16 *) (T) = DatumGetInt16(newdatum); \
break; \
case sizeof(int32): \
*(int32 *) (T) = DatumGetInt32(newdatum); \
break; \
case sizeof(Datum): \
*(Datum *) (T) = (newdatum); \
break; \
default: \
elog(ERROR, "unsupported byval length: %d", \
(int) (attlen)); \
break; \
} \
} while (0)
#else /* SIZEOF_DATUM != 8 */
#define store_att_byval(T,newdatum,attlen) \
do { \
switch (attlen) \
{ \
case sizeof(char): \
*(char *) (T) = DatumGetChar(newdatum); \
break; \
case sizeof(int16): \
*(int16 *) (T) = DatumGetInt16(newdatum); \
break; \
case sizeof(int32): \
*(int32 *) (T) = DatumGetInt32(newdatum); \
break; \
default: \
elog(ERROR, "unsupported byval length: %d", \
(int) (attlen)); \
break; \
} \
} while (0)
#endif /* SIZEOF_DATUM == 8 */
case sizeof(Datum):
*(Datum *) T = newdatum;
break;
#endif
default:
elog(ERROR, "unsupported byval length: %d", attlen);
}
}
#endif /* FRONTEND */
#endif /* TUPMACS_H */