Last change
on this file since 577 was
444,
checked in by satin@…, 6 years ago
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add newlib,libalmos-mkh, restructure shared_syscalls.h and mini-libc
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File size:
1.1 KB
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1 | /* $NetBSD: tdelete.c,v 1.2 1999/09/16 11:45:37 lukem Exp $ */ |
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2 | |
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3 | /* |
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4 | * Tree search generalized from Knuth (6.2.2) Algorithm T just like |
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5 | * the AT&T man page says. |
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6 | * |
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7 | * The node_t structure is for internal use only, lint doesn't grok it. |
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8 | * |
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9 | * Written by reading the System V Interface Definition, not the code. |
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10 | * |
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11 | * Totally public domain. |
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12 | */ |
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13 | |
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14 | #include <sys/cdefs.h> |
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15 | #if 0 |
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16 | #if defined(LIBC_SCCS) && !defined(lint) |
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17 | __RCSID("$NetBSD: tdelete.c,v 1.2 1999/09/16 11:45:37 lukem Exp $"); |
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18 | #endif /* LIBC_SCCS and not lint */ |
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19 | #endif |
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20 | |
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21 | #include <assert.h> |
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22 | #define _SEARCH_PRIVATE |
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23 | #include <search.h> |
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24 | #include <stdlib.h> |
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25 | |
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26 | |
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27 | /* Walk the nodes of a tree */ |
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28 | static void |
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29 | trecurse(root, free_action) |
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30 | node_t *root; /* Root of the tree to be walked */ |
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31 | void (*free_action)(void *); |
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32 | { |
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33 | if (root->llink != NULL) |
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34 | trecurse(root->llink, free_action); |
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35 | if (root->rlink != NULL) |
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36 | trecurse(root->rlink, free_action); |
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37 | |
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38 | (*free_action) ((void *) root->key); |
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39 | free(root); |
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40 | } |
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41 | |
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42 | void |
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43 | tdestroy (void *vrootp, |
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44 | void (*freefct)(void *)) |
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45 | { |
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46 | node_t *root = (node_t *) vrootp; |
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47 | |
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48 | if (root != NULL) |
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49 | trecurse(root, freefct); |
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50 | } |
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