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-rw-r--r--src/backend/bootstrap/bootstrap.c4
-rw-r--r--src/backend/commands/analyze.c4
-rw-r--r--src/backend/utils/fmgr/README27
-rw-r--r--src/backend/utils/fmgr/fmgr.c23
-rw-r--r--src/include/c.h6
-rw-r--r--src/include/catalog/catversion.h4
-rw-r--r--src/include/catalog/pg_attribute.h14
-rw-r--r--src/include/catalog/pg_type.h4
-rw-r--r--src/include/postgres.h57
9 files changed, 53 insertions, 90 deletions
diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index dd70a8c807e..a5c013bd6c6 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -8,7 +8,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/bootstrap/bootstrap.c,v 1.240 2008/03/26 21:10:37 alvherre Exp $
+ * $PostgreSQL: pgsql/src/backend/bootstrap/bootstrap.c,v 1.241 2008/04/18 18:43:09 alvherre Exp $
*
*-------------------------------------------------------------------------
*/
@@ -122,7 +122,7 @@ static const struct typinfo TypInfo[] = {
F_INT2IN, F_INT2OUT},
{"int4", INT4OID, 0, 4, true, 'i', 'p',
F_INT4IN, F_INT4OUT},
- {"float4", FLOAT4OID, 0, 4, false, 'i', 'p',
+ {"float4", FLOAT4OID, 0, 4, true, 'i', 'p',
F_FLOAT4IN, F_FLOAT4OUT},
{"name", NAMEOID, CHAROID, NAMEDATALEN, false, 'i', 'p',
F_NAMEIN, F_NAMEOUT},
diff --git a/src/backend/commands/analyze.c b/src/backend/commands/analyze.c
index 96550744158..0363b213a9c 100644
--- a/src/backend/commands/analyze.c
+++ b/src/backend/commands/analyze.c
@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/commands/analyze.c,v 1.117 2008/04/03 16:27:25 tgl Exp $
+ * $PostgreSQL: pgsql/src/backend/commands/analyze.c,v 1.118 2008/04/18 18:43:09 alvherre Exp $
*
*-------------------------------------------------------------------------
*/
@@ -1304,7 +1304,7 @@ update_attstats(Oid relid, int natts, VacAttrStats **vacattrstats)
/* XXX knows more than it should about type float4: */
arry = construct_array(numdatums, nnum,
FLOAT4OID,
- sizeof(float4), false, 'i');
+ sizeof(float4), true, 'i');
values[i++] = PointerGetDatum(arry); /* stanumbersN */
}
else
diff --git a/src/backend/utils/fmgr/README b/src/backend/utils/fmgr/README
index 3fd3a158ea4..63990ca1587 100644
--- a/src/backend/utils/fmgr/README
+++ b/src/backend/utils/fmgr/README
@@ -1,4 +1,4 @@
-$PostgreSQL: pgsql/src/backend/utils/fmgr/README,v 1.10 2008/03/20 17:55:15 momjian Exp $
+$PostgreSQL: pgsql/src/backend/utils/fmgr/README,v 1.11 2008/04/18 18:43:09 alvherre Exp $
Function Manager
================
@@ -211,14 +211,13 @@ also amenable to machine processing --- for example, we could probably
write a script that scans code like this and extracts argument and result
type info for comparison to the pg_proc table.
-For the standard data types float4, float8, and int8, these macros should
+For the standard data types float8 and int8, these macros should
hide the indirection and space allocation involved, so that the function's
code is not explicitly aware that these types are pass-by-reference. This
will offer a considerable gain in readability, and it also opens up the
opportunity to make these types be pass-by-value on machines where it's
feasible to do so. (For example, on an Alpha it's pretty silly to make int8
-be pass-by-ref, since Datum is going to be 64 bits anyway. float4 could
-become pass-by-value on all machines...)
+be pass-by-ref, since Datum is going to be 64 bits anyway.)
Here are the proposed macros and coding conventions:
@@ -248,20 +247,20 @@ which expands to
Argument values are ordinarily fetched using code like
int32 name = PG_GETARG_INT32(number);
-For float4, float8, and int8, the PG_GETARG macros will hide the pass-by-
-reference nature of the data types; for example PG_GETARG_FLOAT4 expands to
- (* (float4 *) DatumGetPointer(fcinfo->arg[number]))
+For float8 and int8, the PG_GETARG macros will hide the pass-by-reference
+nature of the data types; for example PG_GETARG_FLOAT8 expands to
+ (* (float8 *) DatumGetPointer(fcinfo->arg[number]))
and would typically be called like this:
- float4 arg = PG_GETARG_FLOAT4(0);
-Note that "float4" and "float8" are the recommended typedefs to use, not
-"float32data" and "float64data", and the macros are named accordingly.
-But 64-bit ints should be declared as "int64".
+ float8 arg = PG_GETARG_FLOAT8(0);
+Note that "float8" is the recommended typedef to use, not "float64data", and
+the macros are named accordingly. But 64-bit ints should be declared as
+"int64".
Non-null values are returned with a PG_RETURN_XXX macro of the appropriate
type. For example, PG_RETURN_INT32 expands to
return Int32GetDatum(x)
-PG_RETURN_FLOAT4, PG_RETURN_FLOAT8, and PG_RETURN_INT64 hide the pass-by-
-reference nature of their datatypes.
+PG_RETURN_FLOAT8 and PG_RETURN_INT64 hide the pass-by-reference nature of
+their datatypes.
fmgr.h will provide PG_GETARG and PG_RETURN macros for all the basic data
types. Modules or header files that define specialized SQL datatypes
@@ -334,7 +333,7 @@ Again, this style of coding does not allow for expressing NULL inputs
or receiving a NULL result.
As with the callee-side situation, I propose adding argument conversion
-macros that hide the pass-by-reference nature of int8, float4, and
+macros that hide the pass-by-reference nature of int8, and
float8, with an eye to making those types relatively painless to convert
to pass-by-value.
diff --git a/src/backend/utils/fmgr/fmgr.c b/src/backend/utils/fmgr/fmgr.c
index 44667e62be4..853fb9eda93 100644
--- a/src/backend/utils/fmgr/fmgr.c
+++ b/src/backend/utils/fmgr/fmgr.c
@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/utils/fmgr/fmgr.c,v 1.115 2008/04/17 21:37:28 alvherre Exp $
+ * $PostgreSQL: pgsql/src/backend/utils/fmgr/fmgr.c,v 1.116 2008/04/18 18:43:09 alvherre Exp $
*
*-------------------------------------------------------------------------
*/
@@ -2060,10 +2060,25 @@ Int64GetDatum(int64 X)
Datum
Float4GetDatum(float4 X)
{
- float4 *retval = (float4 *) palloc(sizeof(float4));
+ union {
+ float4 value;
+ int32 retval;
+ } myunion;
- *retval = X;
- return PointerGetDatum(retval);
+ myunion.value = X;
+ return SET_4_BYTES(myunion.retval);
+}
+
+float4
+DatumGetFloat4(Datum X)
+{
+ union {
+ int32 value;
+ float4 retval;
+ } myunion;
+
+ myunion.value = GET_4_BYTES(X);
+ return myunion.retval;
}
Datum
diff --git a/src/include/c.h b/src/include/c.h
index f9b0acf9571..e2697099cbd 100644
--- a/src/include/c.h
+++ b/src/include/c.h
@@ -12,7 +12,7 @@
* Portions Copyright (c) 1996-2008, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
- * $PostgreSQL: pgsql/src/include/c.h,v 1.224 2008/03/17 19:44:41 petere Exp $
+ * $PostgreSQL: pgsql/src/include/c.h,v 1.225 2008/04/18 18:43:09 alvherre Exp $
*
*-------------------------------------------------------------------------
*/
@@ -253,8 +253,8 @@ typedef uint32 bits32; /* >= 32 bits */
* Floating point number, AT LEAST N BITS IN SIZE,
* used for numerical computations.
*
- * Since sizeof(floatN) may be > sizeof(char *), always pass
- * floatN by reference.
+ * Since sizeof(float8) may be > sizeof(char *), always pass
+ * float8 by reference. float4 is passed by value.
*
* XXX: these typedefs are now deprecated in favor of float4 and float8.
* They will eventually go away.
diff --git a/src/include/catalog/catversion.h b/src/include/catalog/catversion.h
index f80d918c656..83c0dbd3694 100644
--- a/src/include/catalog/catversion.h
+++ b/src/include/catalog/catversion.h
@@ -37,7 +37,7 @@
* Portions Copyright (c) 1996-2008, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
- * $PostgreSQL: pgsql/src/include/catalog/catversion.h,v 1.448 2008/04/14 17:05:33 tgl Exp $
+ * $PostgreSQL: pgsql/src/include/catalog/catversion.h,v 1.449 2008/04/18 18:43:09 alvherre Exp $
*
*-------------------------------------------------------------------------
*/
@@ -53,6 +53,6 @@
*/
/* yyyymmddN */
-#define CATALOG_VERSION_NO 200804141
+#define CATALOG_VERSION_NO 200804181
#endif
diff --git a/src/include/catalog/pg_attribute.h b/src/include/catalog/pg_attribute.h
index 2a39d2a6b99..08b18da37d6 100644
--- a/src/include/catalog/pg_attribute.h
+++ b/src/include/catalog/pg_attribute.h
@@ -8,7 +8,7 @@
* Portions Copyright (c) 1996-2008, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
- * $PostgreSQL: pgsql/src/include/catalog/pg_attribute.h,v 1.135 2008/03/27 03:57:34 tgl Exp $
+ * $PostgreSQL: pgsql/src/include/catalog/pg_attribute.h,v 1.136 2008/04/18 18:43:09 alvherre Exp $
*
* NOTES
* the genbki.sh script reads this file and generates .bki
@@ -287,8 +287,8 @@ DATA(insert ( 1247 tableoid 26 0 4 -7 0 -1 -1 t p i t f f t 0));
{ 1255, {"pronamespace"}, 26, -1, 4, 2, 0, -1, -1, true, 'p', 'i', true, false, false, true, 0 }, \
{ 1255, {"proowner"}, 26, -1, 4, 3, 0, -1, -1, true, 'p', 'i', true, false, false, true, 0 }, \
{ 1255, {"prolang"}, 26, -1, 4, 4, 0, -1, -1, true, 'p', 'i', true, false, false, true, 0 }, \
-{ 1255, {"procost"}, 700, -1, 4, 5, 0, -1, -1, false, 'p', 'i', true, false, false, true, 0 }, \
-{ 1255, {"prorows"}, 700, -1, 4, 6, 0, -1, -1, false, 'p', 'i', true, false, false, true, 0 }, \
+{ 1255, {"procost"}, 700, -1, 4, 5, 0, -1, -1, true, 'p', 'i', true, false, false, true, 0 }, \
+{ 1255, {"prorows"}, 700, -1, 4, 6, 0, -1, -1, true, 'p', 'i', true, false, false, true, 0 }, \
{ 1255, {"proisagg"}, 16, -1, 1, 7, 0, -1, -1, true, 'p', 'c', true, false, false, true, 0 }, \
{ 1255, {"prosecdef"}, 16, -1, 1, 8, 0, -1, -1, true, 'p', 'c', true, false, false, true, 0 }, \
{ 1255, {"proisstrict"}, 16, -1, 1, 9, 0, -1, -1, true, 'p', 'c', true, false, false, true, 0 }, \
@@ -309,8 +309,8 @@ DATA(insert ( 1255 proname 19 -1 NAMEDATALEN 1 0 -1 -1 f p i t f f t 0));
DATA(insert ( 1255 pronamespace 26 -1 4 2 0 -1 -1 t p i t f f t 0));
DATA(insert ( 1255 proowner 26 -1 4 3 0 -1 -1 t p i t f f t 0));
DATA(insert ( 1255 prolang 26 -1 4 4 0 -1 -1 t p i t f f t 0));
-DATA(insert ( 1255 procost 700 -1 4 5 0 -1 -1 f p i t f f t 0));
-DATA(insert ( 1255 prorows 700 -1 4 6 0 -1 -1 f p i t f f t 0));
+DATA(insert ( 1255 procost 700 -1 4 5 0 -1 -1 t p i t f f t 0));
+DATA(insert ( 1255 prorows 700 -1 4 6 0 -1 -1 t p i t f f t 0));
DATA(insert ( 1255 proisagg 16 -1 1 7 0 -1 -1 t p c t f f t 0));
DATA(insert ( 1255 prosecdef 16 -1 1 8 0 -1 -1 t p c t f f t 0));
DATA(insert ( 1255 proisstrict 16 -1 1 9 0 -1 -1 t p c t f f t 0));
@@ -395,7 +395,7 @@ DATA(insert ( 1249 tableoid 26 0 4 -7 0 -1 -1 t p i t f f t 0));
{ 1259, {"relfilenode"}, 26, -1, 4, 6, 0, -1, -1, true, 'p', 'i', true, false, false, true, 0 }, \
{ 1259, {"reltablespace"}, 26, -1, 4, 7, 0, -1, -1, true, 'p', 'i', true, false, false, true, 0 }, \
{ 1259, {"relpages"}, 23, -1, 4, 8, 0, -1, -1, true, 'p', 'i', true, false, false, true, 0 }, \
-{ 1259, {"reltuples"}, 700, -1, 4, 9, 0, -1, -1, false, 'p', 'i', true, false, false, true, 0 }, \
+{ 1259, {"reltuples"}, 700, -1, 4, 9, 0, -1, -1, true, 'p', 'i', true, false, false, true, 0 }, \
{ 1259, {"reltoastrelid"}, 26, -1, 4, 10, 0, -1, -1, true, 'p', 'i', true, false, false, true, 0 }, \
{ 1259, {"reltoastidxid"}, 26, -1, 4, 11, 0, -1, -1, true, 'p', 'i', true, false, false, true, 0 }, \
{ 1259, {"relhasindex"}, 16, -1, 1, 12, 0, -1, -1, true, 'p', 'c', true, false, false, true, 0 }, \
@@ -423,7 +423,7 @@ DATA(insert ( 1259 relam 26 -1 4 5 0 -1 -1 t p i t f f t 0));
DATA(insert ( 1259 relfilenode 26 -1 4 6 0 -1 -1 t p i t f f t 0));
DATA(insert ( 1259 reltablespace 26 -1 4 7 0 -1 -1 t p i t f f t 0));
DATA(insert ( 1259 relpages 23 -1 4 8 0 -1 -1 t p i t f f t 0));
-DATA(insert ( 1259 reltuples 700 -1 4 9 0 -1 -1 f p i t f f t 0));
+DATA(insert ( 1259 reltuples 700 -1 4 9 0 -1 -1 t p i t f f t 0));
DATA(insert ( 1259 reltoastrelid 26 -1 4 10 0 -1 -1 t p i t f f t 0));
DATA(insert ( 1259 reltoastidxid 26 -1 4 11 0 -1 -1 t p i t f f t 0));
DATA(insert ( 1259 relhasindex 16 -1 1 12 0 -1 -1 t p c t f f t 0));
diff --git a/src/include/catalog/pg_type.h b/src/include/catalog/pg_type.h
index 8f2ca40093f..2c98f2b5466 100644
--- a/src/include/catalog/pg_type.h
+++ b/src/include/catalog/pg_type.h
@@ -8,7 +8,7 @@
* Portions Copyright (c) 1996-2008, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
- * $PostgreSQL: pgsql/src/include/catalog/pg_type.h,v 1.193 2008/03/27 03:57:34 tgl Exp $
+ * $PostgreSQL: pgsql/src/include/catalog/pg_type.h,v 1.194 2008/04/18 18:43:09 alvherre Exp $
*
* NOTES
* the genbki.sh script reads this file and generates .bki
@@ -368,7 +368,7 @@ DESCR("");
/* OIDS 700 - 799 */
-DATA(insert OID = 700 ( float4 PGNSP PGUID 4 f b t \054 0 0 1021 float4in float4out float4recv float4send - - - i p f 0 -1 0 _null_ _null_ ));
+DATA(insert OID = 700 ( float4 PGNSP PGUID 4 t b t \054 0 0 1021 float4in float4out float4recv float4send - - - i p f 0 -1 0 _null_ _null_ ));
DESCR("single-precision floating point number, 4-byte storage");
#define FLOAT4OID 700
DATA(insert OID = 701 ( float8 PGNSP PGUID 8 f b t \054 0 0 1022 float8in float8out float8recv float8send - - - d p f 0 -1 0 _null_ _null_ ));
diff --git a/src/include/postgres.h b/src/include/postgres.h
index 3c4f414f643..40ecd451a85 100644
--- a/src/include/postgres.h
+++ b/src/include/postgres.h
@@ -10,7 +10,7 @@
* Portions Copyright (c) 1996-2008, PostgreSQL Global Development Group
* Portions Copyright (c) 1995, Regents of the University of California
*
- * $PostgreSQL: pgsql/src/include/postgres.h,v 1.89 2008/03/27 03:57:34 tgl Exp $
+ * $PostgreSQL: pgsql/src/include/postgres.h,v 1.90 2008/04/18 18:43:09 alvherre Exp $
*
*-------------------------------------------------------------------------
*/
@@ -546,18 +546,13 @@ extern Datum Int64GetDatum(int64 X);
/*
* DatumGetFloat4
* Returns 4-byte floating point value of a datum.
- *
- * Note: this macro hides the fact that float4 is currently a
- * pass-by-reference type. Someday it may be pass-by-value.
*/
-#define DatumGetFloat4(X) (* ((float4 *) DatumGetPointer(X)))
+extern float4 DatumGetFloat4(Datum X);
/*
* Float4GetDatum
* Returns datum representation for a 4-byte floating point number.
- *
- * Note: this routine returns a reference to palloc'd space.
*/
extern Datum Float4GetDatum(float4 X);
@@ -584,56 +579,11 @@ extern Datum Float8GetDatum(float8 X);
/*
- * DatumGetFloat32
- * Returns 32-bit floating point value of a datum.
- * This is really a pointer, of course.
- *
- * XXX: this macro is now deprecated in favor of DatumGetFloat4.
- * It will eventually go away.
- */
-
-#define DatumGetFloat32(X) ((float32) DatumGetPointer(X))
-
-/*
- * Float32GetDatum
- * Returns datum representation for a 32-bit floating point number.
- * This is really a pointer, of course.
- *
- * XXX: this macro is now deprecated in favor of Float4GetDatum.
- * It will eventually go away.
- */
-
-#define Float32GetDatum(X) PointerGetDatum(X)
-
-/*
- * DatumGetFloat64
- * Returns 64-bit floating point value of a datum.
- * This is really a pointer, of course.
- *
- * XXX: this macro is now deprecated in favor of DatumGetFloat8.
- * It will eventually go away.
- */
-
-#define DatumGetFloat64(X) ((float64) DatumGetPointer(X))
-
-/*
- * Float64GetDatum
- * Returns datum representation for a 64-bit floating point number.
- * This is really a pointer, of course.
- *
- * XXX: this macro is now deprecated in favor of Float8GetDatum.
- * It will eventually go away.
- */
-
-#define Float64GetDatum(X) PointerGetDatum(X)
-
-/*
* Int64GetDatumFast
- * Float4GetDatumFast
* Float8GetDatumFast
*
* These macros are intended to allow writing code that does not depend on
- * whether int64, float4, float8 are pass-by-reference types, while not
+ * whether int64, float8 are pass-by-reference types, while not
* sacrificing performance when they are. The argument must be a variable
* that will exist and have the same value for as long as the Datum is needed.
* In the pass-by-ref case, the address of the variable is taken to use as
@@ -642,7 +592,6 @@ extern Datum Float8GetDatum(float8 X);
*/
#define Int64GetDatumFast(X) PointerGetDatum(&(X))
-#define Float4GetDatumFast(X) PointerGetDatum(&(X))
#define Float8GetDatumFast(X) PointerGetDatum(&(X))
generated by cgit v1.2.3 (git 2.25.1) at 2025-05-23 00:36:03 +0000