mirror of
git://sourceware.org/git/newlib-cygwin.git
synced 2025-02-08 18:19:08 +08:00
52 lines
1.1 KiB
C
52 lines
1.1 KiB
C
/* $NetBSD: tdelete.c,v 1.2 1999/09/16 11:45:37 lukem Exp $ */
|
|
|
|
/*
|
|
* Tree search generalized from Knuth (6.2.2) Algorithm T just like
|
|
* the AT&T man page says.
|
|
*
|
|
* The node_t structure is for internal use only, lint doesn't grok it.
|
|
*
|
|
* Written by reading the System V Interface Definition, not the code.
|
|
*
|
|
* Totally public domain.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
#if 0
|
|
#if defined(LIBC_SCCS) && !defined(lint)
|
|
__RCSID("$NetBSD: tdelete.c,v 1.2 1999/09/16 11:45:37 lukem Exp $");
|
|
#endif /* LIBC_SCCS and not lint */
|
|
#endif
|
|
|
|
#include <assert.h>
|
|
#define _SEARCH_PRIVATE
|
|
#include <search.h>
|
|
#include <stdlib.h>
|
|
|
|
|
|
/* Walk the nodes of a tree */
|
|
static void
|
|
trecurse(
|
|
node_t *root, /* Root of the tree to be walked */
|
|
void (*free_action)(void *)
|
|
)
|
|
{
|
|
if (root->llink != NULL)
|
|
trecurse(root->llink, free_action);
|
|
if (root->rlink != NULL)
|
|
trecurse(root->rlink, free_action);
|
|
|
|
(*free_action) ((void *) root->key);
|
|
free(root);
|
|
}
|
|
|
|
void
|
|
tdestroy (void *vrootp,
|
|
void (*freefct)(void *))
|
|
{
|
|
node_t *root = (node_t *) vrootp;
|
|
|
|
if (root != NULL)
|
|
trecurse(root, freefct);
|
|
}
|