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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	lib/libc/db/recno/rec_seq.c	Lines:	0	35	0.0 %
Date:	2017-11-07	Branches:	0	36	0.0 %


/*	$OpenBSD: rec_seq.c,v 1.8 2005/08/05 13:03:00 espie Exp $	*/

/*-
 * Copyright (c) 1991, 1993, 1994
 *	The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include <sys/types.h>

#include <errno.h>
#include <limits.h>
#include <stdio.h>
#include <string.h>

#include <db.h>
#include "recno.h"

/*
 * __REC_SEQ -- Recno sequential scan interface.
 *
 * Parameters:
 *	dbp:	pointer to access method
 *	key:	key for positioning and return value
 *	data:	data return value
 *	flags:	R_CURSOR, R_FIRST, R_LAST, R_NEXT, R_PREV.
 *
 * Returns:
 *	RET_ERROR, RET_SUCCESS or RET_SPECIAL if there's no next key.
 */
int
__rec_seq(const DB *dbp, DBT *key, DBT *data, u_int flags)
{
	BTREE *t;
	EPG *e;
	recno_t nrec;
	int status;

	t = dbp->internal;

	/* Toss any page pinned across calls. */
	if (t->bt_pinned != NULL) {
		mpool_put(t->bt_mp, t->bt_pinned, 0);
		t->bt_pinned = NULL;
	}

	switch(flags) {
	case R_CURSOR:
		if ((nrec = *(recno_t *)key->data) == 0)
			goto einval;
		break;
	case R_NEXT:
		if (F_ISSET(&t->bt_cursor, CURS_INIT)) {
			nrec = t->bt_cursor.rcursor + 1;
			break;
		}
		/* FALLTHROUGH */
	case R_FIRST:
		nrec = 1;
		break;
	case R_PREV:
		if (F_ISSET(&t->bt_cursor, CURS_INIT)) {
			if ((nrec = t->bt_cursor.rcursor - 1) == 0)
				return (RET_SPECIAL);
			break;
		}
		/* FALLTHROUGH */
	case R_LAST:
		if (!F_ISSET(t, R_EOF | R_INMEM) &&
		    t->bt_irec(t, MAX_REC_NUMBER) == RET_ERROR)
			return (RET_ERROR);
		nrec = t->bt_nrecs;
		break;
	default:
einval:		errno = EINVAL;
		return (RET_ERROR);
	}

	if (t->bt_nrecs == 0 || nrec > t->bt_nrecs) {
		if (!F_ISSET(t, R_EOF | R_INMEM) &&
		    (status = t->bt_irec(t, nrec)) != RET_SUCCESS)
			return (status);
		if (t->bt_nrecs == 0 || nrec > t->bt_nrecs)
			return (RET_SPECIAL);
	}

	if ((e = __rec_search(t, nrec - 1, SEARCH)) == NULL)
		return (RET_ERROR);

	F_SET(&t->bt_cursor, CURS_INIT);
	t->bt_cursor.rcursor = nrec;

	status = __rec_ret(t, e, nrec, key, data);
	if (F_ISSET(t, B_DB_LOCK))
		mpool_put(t->bt_mp, e->page, 0);
	else
		t->bt_pinned = e->page;
	return (status);
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: rec_seq.c,v 1.8 2005/08/05 13:03:00 espie Exp $ */
2
3			/*-
4			* Copyright (c) 1991, 1993, 1994
5			* The Regents of the University of California. All rights reserved.
6			*
7			* Redistribution and use in source and binary forms, with or without
8			* modification, are permitted provided that the following conditions
9			* are met:
10			* 1. Redistributions of source code must retain the above copyright
11			* notice, this list of conditions and the following disclaimer.
12			* 2. Redistributions in binary form must reproduce the above copyright
13			* notice, this list of conditions and the following disclaimer in the
14			* documentation and/or other materials provided with the distribution.
15			* 3. Neither the name of the University nor the names of its contributors
16			* may be used to endorse or promote products derived from this software
17			* without specific prior written permission.
18			*
19			* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20			* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21			* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22			* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23			* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24			* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25			* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26			* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27			* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28			* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29			* SUCH DAMAGE.
30			*/
31
32			#include <sys/types.h>
33
34			#include <errno.h>
35			#include <limits.h>
36			#include <stdio.h>
37			#include <string.h>
38
39			#include <db.h>
40			#include "recno.h"
41
42			/*
43			* __REC_SEQ -- Recno sequential scan interface.
44			*
45			* Parameters:
46			* dbp: pointer to access method
47			* key: key for positioning and return value
48			* data: data return value
49			* flags: R_CURSOR, R_FIRST, R_LAST, R_NEXT, R_PREV.
50			*
51			* Returns:
52			* RET_ERROR, RET_SUCCESS or RET_SPECIAL if there's no next key.
53			*/
54			int
55			__rec_seq(const DB dbp, DBT key, DBT *data, u_int flags)
56			{
57			BTREE *t;
58			EPG *e;
59			recno_t nrec;
60			int status;
61
62			t = dbp->internal;
63
64			/* Toss any page pinned across calls. */
65			if (t->bt_pinned != NULL) {
66			mpool_put(t->bt_mp, t->bt_pinned, 0);
67			t->bt_pinned = NULL;
68			}
69
70			switch(flags) {
71			case R_CURSOR:
72			if ((nrec = (recno_t )key->data) == 0)
73			goto einval;
74			break;
75			case R_NEXT:
76			if (F_ISSET(&t->bt_cursor, CURS_INIT)) {
77			nrec = t->bt_cursor.rcursor + 1;
78			break;
79			}
80			/* FALLTHROUGH */
81			case R_FIRST:
82			nrec = 1;
83			break;
84			case R_PREV:
85			if (F_ISSET(&t->bt_cursor, CURS_INIT)) {
86			if ((nrec = t->bt_cursor.rcursor - 1) == 0)
87			return (RET_SPECIAL);
88			break;
89			}
90			/* FALLTHROUGH */
91			case R_LAST:
92			if (!F_ISSET(t, R_EOF \| R_INMEM) &&
93			t->bt_irec(t, MAX_REC_NUMBER) == RET_ERROR)
94			return (RET_ERROR);
95			nrec = t->bt_nrecs;
96			break;
97			default:
98			einval: errno = EINVAL;
99			return (RET_ERROR);
100			}
101
102			if (t->bt_nrecs == 0 \|\| nrec > t->bt_nrecs) {
103			if (!F_ISSET(t, R_EOF \| R_INMEM) &&
104			(status = t->bt_irec(t, nrec)) != RET_SUCCESS)
105			return (status);
106			if (t->bt_nrecs == 0 \|\| nrec > t->bt_nrecs)
107			return (RET_SPECIAL);
108			}
109
110			if ((e = __rec_search(t, nrec - 1, SEARCH)) == NULL)
111			return (RET_ERROR);
112
113			F_SET(&t->bt_cursor, CURS_INIT);
114			t->bt_cursor.rcursor = nrec;
115
116			status = __rec_ret(t, e, nrec, key, data);
117			if (F_ISSET(t, B_DB_LOCK))
118			mpool_put(t->bt_mp, e->page, 0);
119			else
120			t->bt_pinned = e->page;
121			return (status);
122			}