postgres.h

/*-------------------------------------------------------------------------
 *
 * postgres.h--
 *	  definition of (and support for) postgres system types.
 * this file is included by almost every .c in the system
 *
 * Copyright (c) 1995, Regents of the University of California
 *
 * $Id: postgres.h,v 1.9 1997/09/08 21:50:28 momjian Exp $
 *
 *-------------------------------------------------------------------------
 */
/*
 *	 NOTES
 *		this file will eventually contain the definitions for the
 *		following (and perhaps other) system types:
 *
 *				int2	   int4		  float4	   float8
 *				Oid		   regproc	  RegProcedure
 *				aclitem
 *				struct varlena
 *				char8	   char16	   int28	  oid8
 *				bytea	   text
 *				NameData   Name
 *				oidint4    oidint2	  oidname
 *
 *	 TABLE OF CONTENTS
 *		1)		simple type definitions
 *		2)		varlena and array types
 *		3)		TransactionId and CommandId
 *		4)		genbki macros used by catalog/pg_xxx.h files
 *		5)		random CSIGNBIT, MAXPGPATH, STATUS macros
 *
 * ----------------------------------------------------------------
 */
#ifndef POSTGRES_H
#define POSTGRES_H

#include "postgres_ext.h"
#include "config.h"
#include "c.h"
#include "utils/elog.h"
#include "utils/palloc.h"

/* ----------------------------------------------------------------
 *				Section 1:	simple type definitions
 * ----------------------------------------------------------------
 */

typedef int16 int2;
typedef int32 int4;
typedef float float4;
typedef double float8;

typedef int4 aclitem;

#define InvalidOid		0
#define OidIsValid(objectId)  ((bool) (objectId != InvalidOid))

/* unfortunately, both regproc and RegProcedure are used */
typedef Oid regproc;
typedef Oid RegProcedure;

/* ptr to func returning (char *) */
typedef char *((*func_ptr) ());


#define RegProcedureIsValid(p)	OidIsValid(p)

/* ----------------------------------------------------------------