ING_DB

WEGA/contrib/ingres/dbs/src/amx_lib/AAmain.c

@@ -0,0 +1,174 @@
+# include	"AA_liba.h"
+# include	<signal.h>
+
+int		AA;
+long		AAdaemon;
+long		AA_TID;
+DESCXX		*AA_TA;
+DESCXX		*AA_TE;
+int		AA_NOLOCKS;
+int		AA_LOCKS;
+int		(*AAMAIN)();
+int		(*AAEXIT)();
+DESCXX		*AA_DESC;
+
+# ifdef MSDOS
+/* ALL INDES catalog names */
+char		AA_REL[]	= "relation";
+char		AA_ATT[]	= "domain";
+char		AA_INDEX[]	= "indexes";
+# endif
+
+AAmain(xbufs, XBUFS, xlocks)
+ACCBUF 	*xbufs;
+int	XBUFS;
+int	xlocks;
+{
+	register struct tup_id	*tid;
+	register int		dbconcur;
+	register int		dbexcl;
+	long			page_id;
+	static DESCXX		rel_desc;
+	extern int		exit();
+
+# ifdef AMX_TRACE
+# ifdef MSDOS
+	AAtTfp(22, 0, "database\t`%s'\n", AAdatabase);
+# else
+	extern char		*AAcustomer();
+
+	AAtTfp(22, 0, "database\t`%s' on %s\n", AAdbpath, AAcustomer(exit));
+# endif
+# endif
+
+	tid = (struct tup_id *) &AA_LOW;
+	page_id = 0L;
+	AAstuff_page(tid, &page_id);
+	tid->line_id = SCANTID;
+
+	tid = (struct tup_id *) &AA_HIGH;
+	page_id = -1L;
+	AAstuff_page(tid, &page_id);
+	tid->line_id = SCANTID;
+
+	/* catch interrupts */
+	signal(SIGINT, exit);
+# ifndef MSDOS
+	signal(SIGQUIT, exit);
+	signal(SIGTERM, exit);
+# endif
+
+	if (AAMAIN)
+		(*AAMAIN)();
+
+	/* open data base */
+	AAam_start();
+
+# ifdef AMX_TRACE
+	AAtTfp(22, 1, "\t\tlock want 0%o got 0%o\n", xlocks, bitset(A_DBCONCUR, AAdmin.adhdr.adflags));
+# endif
+
+	dbconcur = bitset(A_DBCONCUR, xlocks);
+	if (dbconcur != bitset(A_DBCONCUR, AAdmin.adhdr.adflags))
+# ifdef MSDOS
+		AAerror(107, AAdatabase);
+# else
+		AAerror(107, AAdbpath);
+# endif
+
+	dbexcl = !bitset(DB_SHARE, xlocks);
+	AA_NOLOCKS = dbexcl || !dbconcur;
+	if (dbconcur && AAsetdbl(A_RTN, dbexcl? M_EXCL: M_SHARE) < 0)
+# ifdef MSDOS
+		AAerror(100, AAdatabase);
+# else
+		AAerror(100, AAdbpath);
+# endif
+
+# ifdef AMX_TRACE
+	AAtTfp(22, 2, "\t\tworking %s on %s database\n",
+		AA_NOLOCKS? "exclusive": "shared",
+		dbconcur? "concurrent": "private");
+# endif
+
+	AA_DESC = &rel_desc;
+	AA_DESC->xx_next = (DESCXX *) 0;
+	AA_rel = &rel_desc.xx_desc;
+	AArelopen(AA_rel, 2, AA_REL);
+	AAopenr(&AA_att, AA_ATT);
+	AAopenr(&AA_ind, AA_INDEX);
+
+	/* OK, this is cheet */
+	close(AAdmin.adreld.relfp);
+	AAdmin.adreld.relfp = AA_rel->relfp;
+	AAdmin.adreld.relopn = AA_rel->relopn;
+	close(AAdmin.adattd.relfp);
+	AAdmin.adattd.relfp = AA_att->relfp;
+	AAdmin.adattd.relopn = AA_att->relopn;
+
+	if (XBUFS)
+	{
+# ifdef AMX_TRACE
+		AAtTfp(22, 3, "\t\tadd %d bufs\n", XBUFS);
+# endif
+		AAam_addbuf(xbufs, XBUFS);
+	}
+
+# ifdef AMX_TRACE
+	AAtTfp(22, 0, "----------------\n");
+# endif
+
+	return;
+}
+
+
+/*
+**   AApmove    Packed Move
+**
+**	Moves string `s' to storage area `b' of length `l' bytes.
+**	If `s' is too long, it is truncated, otherwise it is
+**	padded to length `l' with character `pad'.
+**	`b' after the transfer is returned.
+*/
+
+char	*AApmove(s, b, l, pad)
+register char	*s;
+register char	*b;
+register int	l;
+int		pad;
+{
+	register int	c;
+
+	/* move up to `l' bytes */
+	while (l > 0 && (c = *s++ & LAST_CHAR))
+	{
+		--l;
+		if ((c < ' ' && c > '\r') || c == LAST_CHAR)
+			c = ' ';	/* convert to blank */
+		*b++ = c;
+	}
+
+	/* if we still have some `l', pad */
+	while (l-- > 0)
+		*b++ = pad;
+
+	return (b);
+}
+
+
+# ifndef MSDOS
+char	*AArelpath(rel)
+register char	*rel;
+{
+	extern char	*AAztack();
+
+	return (AAztack(AAztack(AAdbpath, "/"), rel));
+}
+
+
+
+static	AAdummy()
+{
+	AAerrfn();
+}
+# endif