*
*
* IDENTIFICATION
- * $Header: /cvsroot/pgsql/src/backend/access/common/printtup.c,v 1.54 2000/11/16 22:30:15 tgl Exp $
+ * $Header: /cvsroot/pgsql/src/backend/access/common/printtup.c,v 1.55 2000/12/01 22:10:31 tgl Exp $
*
*-------------------------------------------------------------------------
*/
-
-
#include "postgres.h"
#include "access/heapam.h"
static void printtup_setup(DestReceiver *self, TupleDesc typeinfo);
static void printtup(HeapTuple tuple, TupleDesc typeinfo, DestReceiver *self);
+static void printtup_internal(HeapTuple tuple, TupleDesc typeinfo, DestReceiver *self);
static void printtup_cleanup(DestReceiver *self);
/* ----------------------------------------------------------------
*/
/* ----------------
- * getTypeOutAndElem -- get both typoutput and typelem for a type
- *
- * We used to fetch these with two separate function calls,
- * typtoout() and gettypelem(), which each called SearchSysCache.
- * This way takes half the time.
+ * getTypeOutputInfo -- get info needed for printing values of a type
* ----------------
*/
-int
-getTypeOutAndElem(Oid type, Oid *typOutput, Oid *typElem)
+bool
+getTypeOutputInfo(Oid type, Oid *typOutput, Oid *typElem,
+ bool *typIsVarlena)
{
HeapTuple typeTuple;
Form_pg_type pt;
ObjectIdGetDatum(type),
0, 0, 0);
if (!HeapTupleIsValid(typeTuple))
- elog(ERROR, "getTypeOutAndElem: Cache lookup of type %u failed", type);
+ elog(ERROR, "getTypeOutputInfo: Cache lookup of type %u failed", type);
pt = (Form_pg_type) GETSTRUCT(typeTuple);
*typOutput = pt->typoutput;
*typElem = pt->typelem;
+ *typIsVarlena = (! pt->typbyval) && (pt->typlen == -1);
ReleaseSysCache(typeTuple);
return OidIsValid(*typOutput);
}
{ /* Per-attribute information */
Oid typoutput; /* Oid for the attribute's type output fn */
Oid typelem; /* typelem value to pass to the output fn */
+ bool typisvarlena; /* is it varlena (ie possibly toastable)? */
FmgrInfo finfo; /* Precomputed call info for typoutput */
} PrinttupAttrInfo;
* ----------------
*/
DestReceiver *
-printtup_create_DR()
+printtup_create_DR(bool isBinary)
{
DR_printtup *self = (DR_printtup *) palloc(sizeof(DR_printtup));
- self->pub.receiveTuple = printtup;
+ self->pub.receiveTuple = isBinary ? printtup_internal : printtup;
self->pub.setup = printtup_setup;
self->pub.cleanup = printtup_cleanup;
{
PrinttupAttrInfo *thisState = myState->myinfo + i;
- if (getTypeOutAndElem((Oid) typeinfo->attrs[i]->atttypid,
- &thisState->typoutput, &thisState->typelem))
+ if (getTypeOutputInfo(typeinfo->attrs[i]->atttypid,
+ &thisState->typoutput, &thisState->typelem,
+ &thisState->typisvarlena))
fmgr_info(thisState->typoutput, &thisState->finfo);
}
}
{
DR_printtup *myState = (DR_printtup *) self;
StringInfoData buf;
+ int natts = tuple->t_data->t_natts;
int i,
j,
k;
- char *outputstr;
- Datum attr;
- bool isnull;
/* Set or update my derived attribute info, if needed */
- if (myState->attrinfo != typeinfo ||
- myState->nattrs != tuple->t_data->t_natts)
- printtup_prepare_info(myState, typeinfo, tuple->t_data->t_natts);
+ if (myState->attrinfo != typeinfo || myState->nattrs != natts)
+ printtup_prepare_info(myState, typeinfo, natts);
/* ----------------
* tell the frontend to expect new tuple data (in ASCII style)
*/
j = 0;
k = 1 << 7;
- for (i = 0; i < tuple->t_data->t_natts; ++i)
+ for (i = 0; i < natts; ++i)
{
if (!heap_attisnull(tuple, i + 1))
j |= k; /* set bit if not null */
* send the attributes of this tuple
* ----------------
*/
- for (i = 0; i < tuple->t_data->t_natts; ++i)
+ for (i = 0; i < natts; ++i)
{
PrinttupAttrInfo *thisState = myState->myinfo + i;
+ Datum origattr,
+ attr;
+ bool isnull;
+ char *outputstr;
- attr = heap_getattr(tuple, i + 1, typeinfo, &isnull);
+ origattr = heap_getattr(tuple, i + 1, typeinfo, &isnull);
if (isnull)
continue;
if (OidIsValid(thisState->typoutput))
{
+ /*
+ * If we have a toasted datum, forcibly detoast it here to avoid
+ * memory leakage inside the type's output routine.
+ */
+ if (thisState->typisvarlena)
+ attr = PointerGetDatum(PG_DETOAST_DATUM(origattr));
+ else
+ attr = origattr;
+
outputstr = DatumGetCString(FunctionCall3(&thisState->finfo,
attr,
ObjectIdGetDatum(thisState->typelem),
Int32GetDatum(typeinfo->attrs[i]->atttypmod)));
+
pq_sendcountedtext(&buf, outputstr, strlen(outputstr));
+
+ /* Clean up detoasted copy, if any */
+ if (attr != origattr)
+ pfree(DatumGetPointer(attr));
pfree(outputstr);
}
else
void
debugtup(HeapTuple tuple, TupleDesc typeinfo, DestReceiver *self)
{
+ int natts = tuple->t_data->t_natts;
int i;
- Datum attr;
+ Datum origattr,
+ attr;
char *value;
bool isnull;
Oid typoutput,
typelem;
+ bool typisvarlena;
- for (i = 0; i < tuple->t_data->t_natts; ++i)
+ for (i = 0; i < natts; ++i)
{
- attr = heap_getattr(tuple, i + 1, typeinfo, &isnull);
+ origattr = heap_getattr(tuple, i + 1, typeinfo, &isnull);
if (isnull)
continue;
- if (getTypeOutAndElem((Oid) typeinfo->attrs[i]->atttypid,
- &typoutput, &typelem))
+ if (getTypeOutputInfo(typeinfo->attrs[i]->atttypid,
+ &typoutput, &typelem, &typisvarlena))
{
+ /*
+ * If we have a toasted datum, forcibly detoast it here to avoid
+ * memory leakage inside the type's output routine.
+ */
+ if (typisvarlena)
+ attr = PointerGetDatum(PG_DETOAST_DATUM(origattr));
+ else
+ attr = origattr;
+
value = DatumGetCString(OidFunctionCall3(typoutput,
attr,
ObjectIdGetDatum(typelem),
Int32GetDatum(typeinfo->attrs[i]->atttypmod)));
+
printatt((unsigned) i + 1, typeinfo->attrs[i], value);
+
+ /* Clean up detoasted copy, if any */
+ if (attr != origattr)
+ pfree(DatumGetPointer(attr));
pfree(value);
}
}
* We use a different data prefix, e.g. 'B' instead of 'D' to
* indicate a tuple in internal (binary) form.
*
- * This is same as printtup, except we don't use the typout func,
- * and therefore have no need for persistent state.
+ * This is largely same as printtup, except we don't use the typout func.
* ----------------
*/
-void
+static void
printtup_internal(HeapTuple tuple, TupleDesc typeinfo, DestReceiver *self)
{
+ DR_printtup *myState = (DR_printtup *) self;
StringInfoData buf;
+ int natts = tuple->t_data->t_natts;
int i,
j,
k;
- Datum attr;
- bool isnull;
+
+ /* Set or update my derived attribute info, if needed */
+ if (myState->attrinfo != typeinfo || myState->nattrs != natts)
+ printtup_prepare_info(myState, typeinfo, natts);
/* ----------------
* tell the frontend to expect new tuple data (in binary style)
*/
j = 0;
k = 1 << 7;
- for (i = 0; i < tuple->t_data->t_natts; ++i)
+ for (i = 0; i < natts; ++i)
{
if (!heap_attisnull(tuple, i + 1))
j |= k; /* set bit if not null */
* ----------------
*/
#ifdef IPORTAL_DEBUG
- fprintf(stderr, "sending tuple with %d atts\n", tuple->t_data->t_natts);
+ fprintf(stderr, "sending tuple with %d atts\n", natts);
#endif
- for (i = 0; i < tuple->t_data->t_natts; ++i)
+
+ for (i = 0; i < natts; ++i)
{
- int32 len = typeinfo->attrs[i]->attlen;
+ PrinttupAttrInfo *thisState = myState->myinfo + i;
+ Datum origattr,
+ attr;
+ bool isnull;
+ int32 len;
- attr = heap_getattr(tuple, i + 1, typeinfo, &isnull);
- if (!isnull)
+ origattr = heap_getattr(tuple, i + 1, typeinfo, &isnull);
+ if (isnull)
+ continue;
+ /* send # of bytes, and opaque data */
+ if (thisState->typisvarlena)
{
- /* # of bytes, and opaque data */
- if (len == -1)
- {
- /* variable length, assume a varlena structure */
- len = VARSIZE(attr) - VARHDRSZ;
+ /*
+ * If we have a toasted datum, must detoast before sending.
+ */
+ attr = PointerGetDatum(PG_DETOAST_DATUM(origattr));
+
+ len = VARSIZE(attr) - VARHDRSZ;
- pq_sendint(&buf, len, VARHDRSZ);
- pq_sendbytes(&buf, VARDATA(attr), len);
+ pq_sendint(&buf, len, VARHDRSZ);
+ pq_sendbytes(&buf, VARDATA(attr), len);
#ifdef IPORTAL_DEBUG
- {
- char *d = VARDATA(attr);
+ {
+ char *d = VARDATA(attr);
- fprintf(stderr, "length %d data %x%x%x%x\n",
- len, *d, *(d + 1), *(d + 2), *(d + 3));
- }
-#endif
+ fprintf(stderr, "length %d data %x %x %x %x\n",
+ len, *d, *(d + 1), *(d + 2), *(d + 3));
}
- else
+#endif
+
+ /* Clean up detoasted copy, if any */
+ if (attr != origattr)
+ pfree(DatumGetPointer(attr));
+ }
+ else
+ {
+ /* fixed size */
+ attr = origattr;
+ len = typeinfo->attrs[i]->attlen;
+ pq_sendint(&buf, len, sizeof(int32));
+ if (typeinfo->attrs[i]->attbyval)
{
- /* fixed size */
- if (typeinfo->attrs[i]->attbyval)
+ int8 i8;
+ int16 i16;
+ int32 i32;
+
+ switch (len)
{
- int8 i8;
- int16 i16;
- int32 i32;
-
- pq_sendint(&buf, len, sizeof(int32));
- switch (len)
- {
- case sizeof(int8):
- i8 = DatumGetChar(attr);
- pq_sendbytes(&buf, (char *) &i8, len);
- break;
- case sizeof(int16):
- i16 = DatumGetInt16(attr);
- pq_sendbytes(&buf, (char *) &i16, len);
- break;
- case sizeof(int32):
- i32 = DatumGetInt32(attr);
- pq_sendbytes(&buf, (char *) &i32, len);
- break;
- }
+ case sizeof(int8):
+ i8 = DatumGetChar(attr);
+ pq_sendbytes(&buf, (char *) &i8, len);
+ break;
+ case sizeof(int16):
+ i16 = DatumGetInt16(attr);
+ pq_sendbytes(&buf, (char *) &i16, len);
+ break;
+ case sizeof(int32):
+ i32 = DatumGetInt32(attr);
+ pq_sendbytes(&buf, (char *) &i32, len);
+ break;
+ default:
+ elog(ERROR, "printtup_internal: unexpected typlen");
+ break;
+ }
#ifdef IPORTAL_DEBUG
- fprintf(stderr, "byval length %d data %d\n", len, attr);
+ fprintf(stderr, "byval length %d data %d\n", len, attr);
#endif
- }
- else
- {
- pq_sendint(&buf, len, sizeof(int32));
- pq_sendbytes(&buf, DatumGetPointer(attr), len);
+ }
+ else
+ {
+ pq_sendbytes(&buf, DatumGetPointer(attr), len);
#ifdef IPORTAL_DEBUG
- fprintf(stderr, "byref length %d data %x\n", len,
- DatumGetPointer(attr));
+ fprintf(stderr, "byref length %d data %p\n", len,
+ DatumGetPointer(attr));
#endif
- }
}
}
}
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