mirror of
https://github.com/postgres/postgres.git
synced 2025-05-14 00:03:46 -04:00
0a7fb4e918
key call sites are changed, but most called functions are still oldstyle. An exception is that the PL managers are updated (so, for example, NULL handling now behaves as expected in plperl and plpgsql functions). NOTE initdb is forced due to added column in pg_proc.
236 lines
6.2 KiB
C
236 lines
6.2 KiB
C
/*-------------------------------------------------------------------------
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*
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* postgres.h
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* definition of (and support for) postgres system types.
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* this file is included by almost every .c in the system
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*
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* Portions Copyright (c) 1996-2000, PostgreSQL, Inc
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* Portions Copyright (c) 1995, Regents of the University of California
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*
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* $Id: postgres.h,v 1.39 2000/05/28 17:56:12 tgl Exp $
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*
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*-------------------------------------------------------------------------
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*/
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/*
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* NOTES
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* this file will eventually contain the definitions for the
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* following (and perhaps other) system types:
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*
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* int2 int4 float4 float8
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* Oid regproc RegProcedure
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* aclitem
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* struct varlena
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* int2vector oidvector
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* bytea text
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* NameData Name
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*
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* TABLE OF CONTENTS
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* 1) simple type definitions
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* 2) varlena and array types
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* 3) TransactionId and CommandId
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* 4) genbki macros used by catalog/pg_xxx.h files
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* 5) random stuff
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*
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* ----------------------------------------------------------------
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*/
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#ifndef POSTGRES_H
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#define POSTGRES_H
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#include "postgres_ext.h"
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#include "c.h"
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#include "utils/elog.h"
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#include "utils/mcxt.h"
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#include "utils/palloc.h"
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/* ----------------------------------------------------------------
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* Section 1: simple type definitions
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* ----------------------------------------------------------------
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*/
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typedef int4 aclitem;
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#define InvalidOid 0
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#define OidIsValid(objectId) ((bool) ((objectId) != InvalidOid))
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/* unfortunately, both regproc and RegProcedure are used */
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typedef Oid regproc;
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typedef Oid RegProcedure;
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#define RegProcedureIsValid(p) OidIsValid(p)
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/* ----------------------------------------------------------------
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* Section 2: variable length and array types
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* ----------------------------------------------------------------
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*/
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/* ----------------
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* struct varlena
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* ----------------
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*/
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struct varlena
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{
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int32 vl_len;
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char vl_dat[1];
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};
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#define VARSIZE(PTR) (((struct varlena *)(PTR))->vl_len)
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#define VARDATA(PTR) (((struct varlena *)(PTR))->vl_dat)
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#define VARHDRSZ ((int32) sizeof(int32))
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typedef struct varlena bytea;
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typedef struct varlena text;
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typedef int2 int2vector[INDEX_MAX_KEYS];
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typedef Oid oidvector[INDEX_MAX_KEYS];
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/*
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* Proposed new layout for variable length attributes
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* DO NOT USE YET - Jan
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*/
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#undef TUPLE_TOASTER_ACTIVE
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#undef TUPLE_TOASTER_ALL_TYPES
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#ifdef TUPLE_TOASTER_ACTIVE
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typedef struct varattrib
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{
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int32 va_header; /* External/compressed storage */
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/* flags and item size */
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union
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{
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struct
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{
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int32 va_rawsize; /* Plain data size */
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} va_compressed; /* Compressed stored attribute */
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struct
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{
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int32 va_rawsize; /* Plain data size */
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Oid va_valueid; /* Unique identifier of value */
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Oid va_longrelid; /* RelID where to find chunks */
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Oid va_rowid; /* Main tables row Oid */
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int16 va_attno; /* Main tables attno */
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} va_external;/* External stored attribute */
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char va_data[1]; /* Plain stored attribute */
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} va_content;
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} varattrib;
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#define VARATT_FLAG_EXTERNAL 0x8000
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#define VARATT_FLAG_COMPRESSED 0x4000
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#define VARATT_MASK_FLAGS 0xc000
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#define VARATT_MASK_SIZE 0x3fff
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#define VARATT_SIZEP(_PTR) (((varattrib *)(_PTR))->va_header)
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#define VARATT_SIZE(PTR) (VARATT_SIZEP(PTR) & VARATT_MASK_SIZE)
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#define VARATT_DATA(PTR) (((varattrib *)(PTR))->va_content.va_data)
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#define VARATT_IS_EXTENDED(PTR) \
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((VARATT_SIZEP(PTR) & VARATT_MASK_FLAGS) != 0)
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#define VARATT_IS_EXTERNAL(PTR) \
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((VARATT_SIZEP(PTR) & VARATT_FLAG_EXTERNAL) != 0)
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#define VARATT_IS_COMPRESSED(PTR) \
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((VARATT_SIZEP(PTR) & VARATT_FLAG_COMPRESSED) != 0)
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/* ----------
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* This is regularly declared in access/tuptoaster.h,
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* but we don't want to include that into every source,
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* so we (evil evil evil) declare it here once more.
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* ----------
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*/
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extern varattrib *heap_tuple_untoast_attr(varattrib * attr);
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#define VARATT_GETPLAIN(_ARG,_VAR) { \
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if (VARATTR_IS_EXTENDED(_ARG)) \
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(_VAR) = (void *)heap_tuple_untoast_attr(_ARG); \
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else \
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(_VAR) = (_ARG); \
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}
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#define VARATT_FREE(_ARG,VAR) do { \
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if ((void *)(_VAR) != (void *)(_ARG)) \
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pfree((void *)(_VAR)); \
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} while (0)
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#else /* TUPLE_TOASTER_ACTIVE */
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#define VARATT_SIZE(__PTR) VARSIZE(__PTR)
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#define VARATT_SIZEP(__PTR) VARSIZE(__PTR)
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#endif /* TUPLE_TOASTER_ACTIVE */
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/* We want NameData to have length NAMEDATALEN and int alignment,
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* because that's how the data type 'name' is defined in pg_type.
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* Use a union to make sure the compiler agrees.
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*/
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typedef union nameData
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{
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char data[NAMEDATALEN];
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int alignmentDummy;
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} NameData;
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typedef NameData *Name;
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#define NameStr(name) ((name).data)
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/* ----------------------------------------------------------------
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* Section 3: TransactionId and CommandId
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* ----------------------------------------------------------------
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*/
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typedef uint32 TransactionId;
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#define InvalidTransactionId 0
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typedef uint32 CommandId;
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#define FirstCommandId 0
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/* ----------------------------------------------------------------
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* Section 4: genbki macros used by the
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* catalog/pg_xxx.h files
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* ----------------------------------------------------------------
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*/
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#define CATALOG(x) \
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typedef struct CppConcat(FormData_,x)
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/* Huh? */
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#define DATA(x) extern int errno
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#define DESCR(x) extern int errno
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#define DECLARE_INDEX(x) extern int errno
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#define DECLARE_UNIQUE_INDEX(x) extern int errno
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#define BUILD_INDICES
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#define BOOTSTRAP
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#define BKI_BEGIN
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#define BKI_END
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/* ----------------------------------------------------------------
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* Section 5: random stuff
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* CSIGNBIT, STATUS...
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* ----------------------------------------------------------------
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*/
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/* msb for int/unsigned */
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#define ISIGNBIT (0x80000000)
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#define WSIGNBIT (0x8000)
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/* msb for char */
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#define CSIGNBIT (0x80)
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#define STATUS_OK (0)
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#define STATUS_ERROR (-1)
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#define STATUS_NOT_FOUND (-2)
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#define STATUS_INVALID (-3)
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#define STATUS_UNCATALOGUED (-4)
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#define STATUS_REPLACED (-5)
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#define STATUS_NOT_DONE (-6)
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#define STATUS_BAD_PACKET (-7)
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#define STATUS_FOUND (1)
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/* ---------------
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* Cyrillic on the fly charsets recode
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* ---------------
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*/
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#ifdef CYR_RECODE
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extern void SetCharSet();
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#endif /* CYR_RECODE */
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#endif /* POSTGRES_H */
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