Postgres95 1.01 Distribution - Virgin SourcesPG95-1_01

1 files changed, 224 insertions, 0 deletions

diff --git a/src/backend/include/postgres.h b/src/backend/include/postgres.h
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+/*-------------------------------------------------------------------------
+ *
+ * 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 1.1.1.1 1996/07/09 06:21:28 scrappy 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 SIGNBIT, MAXPGPATH, STATUS macros
+ *
+ * ----------------------------------------------------------------
+ */
+#ifndef POSTGRES_H
+#define POSTGRES_H
+
+#include "c.h"
+
+/* ----------------------------------------------------------------
+ *		Section 1:  simple type definitions
+ * ----------------------------------------------------------------
+ */
+
+typedef	int16	int2;
+typedef int32	int4;
+typedef float	float4;
+typedef double	float8;
+
+typedef int4 aclitem;
+
+
+typedef uint32	Oid;
+#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)
+
+/* ----------------------------------------------------------------
+ *		Section 2:  variable length and array types
+ * ----------------------------------------------------------------
+ */
+/* ----------------
+ *	struct varlena
+ * ----------------
+ */
+struct varlena {
+	int32	vl_len;
+	char	vl_dat[1];
+};
+
+#define	VARSIZE(PTR)	(((struct varlena *)(PTR))->vl_len)
+#define	VARDATA(PTR)    (((struct varlena *)(PTR))->vl_dat)
+#define	VARHDRSZ	sizeof(int32)
+
+typedef struct varlena bytea;
+typedef struct varlena text;
+
+typedef struct char8 {
+	char	data[8];
+} char8;
+
+/* ----------------
+ *	char16
+ * ----------------
+ */
+typedef struct char16 {
+	char	data[16];
+} char16;
+
+typedef char16	*Char16;
+
+typedef int2 int28[8];
+typedef Oid oid8[8];
+
+/* char16 is distinct from Name.
+   now, you can truly change the max length of system names
+   by altering the NAMEDATALEN define below.
+   don't set the value too high because tuples are still constrained
+   to be less than 8K 
+*/
+
+ /* NAMEDATALEN is the maximum string length (counting terminating null) 
+    of a Name */ 
+/* defined in Makefile.global */
+/* if you change the value of NAMEDATALEN, you may need to change the
+    alignment of the 'name' type in pg_type.h */
+#ifndef NAMEDATALEN
+#define NAMEDATALEN 16
+#endif /* NAMEDATALEN */
+/* OIDNAMELEN should be NAMEDATALEN + sizeof(Oid) */
+#ifndef OIDNAMELEN
+#define OIDNAMELEN 20
+#endif /* OIDNAMELEN */
+
+typedef struct nameData {
+    char data[NAMEDATALEN];
+} NameData;
+typedef NameData	*Name;
+
+/* ----------------
+ *	oidint4
+ *
+ *	this is a new system type used by the file interface.
+ * ----------------
+ */
+typedef struct OidInt4Data {
+	Oid	oi_oid;
+	int32		oi_int4;
+} OidInt4Data;
+
+typedef struct OidInt4Data	*OidInt4;
+
+/* ----------------
+ *	oidint2
+ *
+ *	this is a new system type used to define indices on two attrs.
+ * ----------------
+ */
+typedef struct OidInt2Data {
+	Oid	oi_oid;
+	int16		oi_int2;
+} OidInt2Data;
+
+typedef struct OidInt2Data	*OidInt2;
+
+/* ----------------
+ *	oidname
+ *
+ *	this is a new system type used to define indices on two attrs.
+ * ----------------
+ */
+typedef struct OidNameData {
+	Oid	id;
+	NameData name;
+} OidNameData;
+
+typedef struct OidNameData	*OidName;
+
+/* ----------------------------------------------------------------
+ *		Section 3: TransactionId and CommandId
+ * ----------------------------------------------------------------
+ */
+
+typedef uint32			TransactionId;
+#define InvalidTransactionId	0
+typedef uint16			CommandId;
+#define FirstCommandId	0
+
+/* ----------------------------------------------------------------
+ *		Section 4: genbki macros used by the
+ *			   catalog/pg_xxx.h files
+ * ----------------------------------------------------------------
+ */
+#define CATALOG(x) \
+    typedef struct CppConcat(FormData_,x)
+
+#define DATA(x) extern int errno
+#define DECLARE_INDEX(x) extern int errno
+
+#define BUILD_INDICES
+#define BOOTSTRAP
+
+#define BKI_BEGIN
+#define BKI_END
+
+/* ----------------------------------------------------------------
+ *		Section 5:  random stuff
+ *			    SIGNBIT, MAXPGPATH, STATUS...
+ * ----------------------------------------------------------------
+ */
+
+/* msb for int/unsigned */
+#define	SIGNBIT	(0x8000)
+
+/* msb for char */
+#define	CSIGNBIT (1 << 7)
+
+/* ----------------
+ *	global variables which should probably go someplace else.
+ * ----------------
+ */
+#define	MAXPGPATH	128
+
+#define STATUS_OK               (0)
+#define STATUS_ERROR            (-1)
+#define STATUS_NOT_FOUND        (-2)
+#define STATUS_INVALID          (-3)
+#define STATUS_UNCATALOGUED     (-4)
+#define STATUS_REPLACED         (-5)
+#define STATUS_NOT_DONE		(-6)
+#define STATUS_BAD_PACKET	(-7)
+#define STATUS_FOUND            (1)
+
+#endif /* POSTGRES_H */