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