xref: /openbsd/usr.bin/make/lst.lib/lstDestroy.c (revision db3296cf)
1 /*	$OpenPackages$ */
2 /*	$OpenBSD: lstDestroy.c,v 1.15 2003/06/03 02:56:12 millert Exp $	*/
3 /*	$NetBSD: lstDestroy.c,v 1.6 1996/11/06 17:59:37 christos Exp $	*/
4 
5 /*
6  * Copyright (c) 1988, 1989, 1990, 1993
7  *	The Regents of the University of California.  All rights reserved.
8  *
9  * This code is derived from software contributed to Berkeley by
10  * Adam de Boor.
11  *
12  * Redistribution and use in source and binary forms, with or without
13  * modification, are permitted provided that the following conditions
14  * are met:
15  * 1. Redistributions of source code must retain the above copyright
16  *    notice, this list of conditions and the following disclaimer.
17  * 2. Redistributions in binary form must reproduce the above copyright
18  *    notice, this list of conditions and the following disclaimer in the
19  *    documentation and/or other materials provided with the distribution.
20  * 3. Neither the name of the University nor the names of its contributors
21  *    may be used to endorse or promote products derived from this software
22  *    without specific prior written permission.
23  *
24  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34  * SUCH DAMAGE.
35  */
36 
37 /*-
38  * LstDestroy.c --
39  *	Nuke a list and all its resources
40  */
41 
42 #include	"lstInt.h"
43 #include	<stdlib.h>
44 
45 /*-
46  *-----------------------------------------------------------------------
47  * Lst_Destroy --
48  *	Destroy a list and free all its resources. If the freeProc is
49  *	given, it is called with the datum from each node in turn before
50  *	the node is freed.
51  *
52  * Side Effects:
53  *	The given list is freed in its entirety.
54  *
55  *-----------------------------------------------------------------------
56  */
57 void
58 Lst_Destroy(l, freeProc)
59     Lst 		l;
60     SimpleProc		freeProc;
61 {
62     LstNode	ln;
63     LstNode	tln;
64 
65     if (freeProc) {
66 	for (ln = l->firstPtr; ln != NULL; ln = tln) {
67 	     tln = ln->nextPtr;
68 	     (*freeProc)(ln->datum);
69 	     free(ln);
70 	}
71     } else {
72 	for (ln = l->firstPtr; ln != NULL; ln = tln) {
73 	     tln = ln->nextPtr;
74 	     free(ln);
75 	}
76     }
77 }
78 
79