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annotate rogue5/list.c @ 215:1b73a8641b37

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rogue4: fix most GCC5 warnings. Converting all function definitions to ANSI style accounts for most of the change. This has exposed other problems, such as daemons not actually being their stated type, that will require more careful solutions.
author John "Elwin" Edwards
date Wed, 27 Jan 2016 19:41:05 -0500
parents f502bf60e6e4
children
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33
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1 /*
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2 * Functions for dealing with linked lists of goodies
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3 *
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4 * @(#)list.c 4.12 (Berkeley) 02/05/99
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5 *
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6 * Rogue: Exploring the Dungeons of Doom
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7 * Copyright (C) 1980-1983, 1985, 1999 Michael Toy, Ken Arnold and Glenn Wichman
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8 * All rights reserved.
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9 *
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10 * See the file LICENSE.TXT for full copyright and licensing information.
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11 */
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12
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13 #include <stdlib.h>
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14 #include <curses.h>
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15 #include "rogue.h"
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16
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17 #ifdef MASTER
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18 int total = 0; /* total dynamic memory bytes */
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19 #endif
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20
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21 /*
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22 * detach:
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23 * takes an item out of whatever linked list it might be in
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24 */
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25
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26 void
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27 _detach(THING **list, THING *item)
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28 {
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29 if (*list == item)
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30 *list = next(item);
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31 if (prev(item) != NULL)
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32 item->l_prev->l_next = next(item);
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33 if (next(item) != NULL)
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34 item->l_next->l_prev = prev(item);
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35 item->l_next = NULL;
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36 item->l_prev = NULL;
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37 }
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38
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39 /*
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40 * _attach:
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41 * add an item to the head of a list
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42 */
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43
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44 void
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45 _attach(THING **list, THING *item)
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46 {
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47 if (*list != NULL)
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48 {
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49 item->l_next = *list;
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50 (*list)->l_prev = item;
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51 item->l_prev = NULL;
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52 }
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53 else
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54 {
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55 item->l_next = NULL;
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56 item->l_prev = NULL;
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57 }
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58 *list = item;
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59 }
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60
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61 /*
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62 * _free_list:
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63 * Throw the whole blamed thing away
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64 */
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65
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66 void
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67 _free_list(THING **ptr)
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68 {
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69 THING *item;
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70
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71 while (*ptr != NULL)
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72 {
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73 item = *ptr;
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74 *ptr = next(item);
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75 discard(item);
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76 }
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77 }
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78
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79 /*
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80 * discard:
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81 * Free up an item
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82 */
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83
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84 void
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85 discard(THING *item)
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86 {
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87 #ifdef MASTER
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88 total--;
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89 #endif
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90 free(item);
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91 }
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92
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93 /*
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94 * new_item
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95 * Get a new item with a specified size
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96 */
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97 THING *
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98 new_item(void)
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99 {
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100 THING *item;
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101
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102 if ((item = calloc(1, sizeof *item)) == NULL) {
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103 #ifdef MASTER
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104 msg("ran out of memory after %d items", total);
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105 #endif
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106 return NULL;
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107 }
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108
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109 #ifdef MASTER
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