postgresql/contrib/btree_gist/btree_bit.c
Peter Eisentraut e7128e8dbb Create function prototype as part of PG_FUNCTION_INFO_V1 macro
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.
2014-04-18 00:03:19 -04:00

207 lines
4.3 KiB
C

/*
* contrib/btree_gist/btree_bit.c
*/
#include "postgres.h"
#include "btree_gist.h"
#include "btree_utils_var.h"
#include "utils/bytea.h"
#include "utils/varbit.h"
/*
** Bit ops
*/
PG_FUNCTION_INFO_V1(gbt_bit_compress);
PG_FUNCTION_INFO_V1(gbt_bit_union);
PG_FUNCTION_INFO_V1(gbt_bit_picksplit);
PG_FUNCTION_INFO_V1(gbt_bit_consistent);
PG_FUNCTION_INFO_V1(gbt_bit_penalty);
PG_FUNCTION_INFO_V1(gbt_bit_same);
/* define for comparison */
static bool
gbt_bitgt(const void *a, const void *b, Oid collation)
{
return DatumGetBool(DirectFunctionCall2(bitgt,
PointerGetDatum(a),
PointerGetDatum(b)));
}
static bool
gbt_bitge(const void *a, const void *b, Oid collation)
{
return DatumGetBool(DirectFunctionCall2(bitge,
PointerGetDatum(a),
PointerGetDatum(b)));
}
static bool
gbt_biteq(const void *a, const void *b, Oid collation)
{
return DatumGetBool(DirectFunctionCall2(biteq,
PointerGetDatum(a),
PointerGetDatum(b)));
}
static bool
gbt_bitle(const void *a, const void *b, Oid collation)
{
return DatumGetBool(DirectFunctionCall2(bitle,
PointerGetDatum(a),
PointerGetDatum(b)));
}
static bool
gbt_bitlt(const void *a, const void *b, Oid collation)
{
return DatumGetBool(DirectFunctionCall2(bitlt,
PointerGetDatum(a),
PointerGetDatum(b)));
}
static int32
gbt_bitcmp(const void *a, const void *b, Oid collation)
{
return DatumGetInt32(DirectFunctionCall2(byteacmp,
PointerGetDatum(a),
PointerGetDatum(b)));
}
static bytea *
gbt_bit_xfrm(bytea *leaf)
{
bytea *out = leaf;
int s = INTALIGN(VARBITBYTES(leaf) + VARHDRSZ);
out = palloc(s);
SET_VARSIZE(out, s);
memcpy((void *) VARDATA(out), (void *) VARBITS(leaf), VARBITBYTES(leaf));
return out;
}
static GBT_VARKEY *
gbt_bit_l2n(GBT_VARKEY *leaf)
{
GBT_VARKEY *out = leaf;
GBT_VARKEY_R r = gbt_var_key_readable(leaf);
bytea *o;
o = gbt_bit_xfrm(r.lower);
r.upper = r.lower = o;
out = gbt_var_key_copy(&r, TRUE);
pfree(o);
return out;
}
static const gbtree_vinfo tinfo =
{
gbt_t_bit,
0,
TRUE,
gbt_bitgt,
gbt_bitge,
gbt_biteq,
gbt_bitle,
gbt_bitlt,
gbt_bitcmp,
gbt_bit_l2n
};
/**************************************************
* Bit ops
**************************************************/
Datum
gbt_bit_compress(PG_FUNCTION_ARGS)
{
GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
PG_RETURN_POINTER(gbt_var_compress(entry, &tinfo));
}
Datum
gbt_bit_consistent(PG_FUNCTION_ARGS)
{
GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
void *query = (void *) DatumGetByteaP(PG_GETARG_DATUM(1));
StrategyNumber strategy = (StrategyNumber) PG_GETARG_UINT16(2);
/* Oid subtype = PG_GETARG_OID(3); */
bool *recheck = (bool *) PG_GETARG_POINTER(4);
bool retval;
GBT_VARKEY *key = (GBT_VARKEY *) DatumGetPointer(entry->key);
GBT_VARKEY_R r = gbt_var_key_readable(key);
/* All cases served by this function are exact */
*recheck = false;
if (GIST_LEAF(entry))
retval = gbt_var_consistent(&r, query, strategy, PG_GET_COLLATION(),
TRUE, &tinfo);
else
{
bytea *q = gbt_bit_xfrm((bytea *) query);
retval = gbt_var_consistent(&r, q, strategy, PG_GET_COLLATION(),
FALSE, &tinfo);
}
PG_RETURN_BOOL(retval);
}
Datum
gbt_bit_union(PG_FUNCTION_ARGS)
{
GistEntryVector *entryvec = (GistEntryVector *) PG_GETARG_POINTER(0);
int32 *size = (int *) PG_GETARG_POINTER(1);
PG_RETURN_POINTER(gbt_var_union(entryvec, size, PG_GET_COLLATION(),
&tinfo));
}
Datum
gbt_bit_picksplit(PG_FUNCTION_ARGS)
{
GistEntryVector *entryvec = (GistEntryVector *) PG_GETARG_POINTER(0);
GIST_SPLITVEC *v = (GIST_SPLITVEC *) PG_GETARG_POINTER(1);
gbt_var_picksplit(entryvec, v, PG_GET_COLLATION(),
&tinfo);
PG_RETURN_POINTER(v);
}
Datum
gbt_bit_same(PG_FUNCTION_ARGS)
{
Datum d1 = PG_GETARG_DATUM(0);
Datum d2 = PG_GETARG_DATUM(1);
bool *result = (bool *) PG_GETARG_POINTER(2);
*result = gbt_var_same(d1, d2, PG_GET_COLLATION(), &tinfo);
PG_RETURN_POINTER(result);
}
Datum
gbt_bit_penalty(PG_FUNCTION_ARGS)
{
GISTENTRY *o = (GISTENTRY *) PG_GETARG_POINTER(0);
GISTENTRY *n = (GISTENTRY *) PG_GETARG_POINTER(1);
float *result = (float *) PG_GETARG_POINTER(2);
PG_RETURN_POINTER(gbt_var_penalty(result, o, n, PG_GET_COLLATION(),
&tinfo));
}