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annotate srogue/daemon.c @ 299:74351bf23e5e

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Fix another pointer bug related to object stacks.
author John "Elwin" Edwards
date Sun, 11 Feb 2018 15:37:33 -0500
parents b67b99f6c92b
children
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1 /*
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2 * Contains functions for dealing with things that
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3 * happen in the future.
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4 *
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5 * @(#)daemon.c 9.0 (rdk) 7/17/84
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6 *
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7 * Super-Rogue
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8 * Copyright (C) 1984 Robert D. Kindelberger
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9 * All rights reserved.
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10 *
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11 * Based on "Rogue: Exploring the Dungeons of Doom"
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12 * Copyright (C) 1980, 1981 Michael Toy, Ken Arnold and Glenn Wichman
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13 * All rights reserved.
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14 *
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15 * See the file LICENSE.TXT for full copyright and licensing information.
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16 */
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17
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18 #include "rogue.h"
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19 #include "rogue.ext"
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20
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21 #define EMPTY 0
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22 #define DAEMON -1
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23
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24 #define _X_ { 0, 0, 0, 0 }
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25
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26 struct delayed_action d_list[MAXDAEMONS] = {
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27 _X_, _X_, _X_, _X_, _X_, _X_, _X_, _X_, _X_, _X_,
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28 _X_, _X_, _X_, _X_, _X_, _X_, _X_, _X_, _X_, _X_,
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29 };
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30
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31
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32 /*
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33 * d_insert:
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34 * Insert a function in the daemon list.
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35 */
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36 struct delayed_action *
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37 d_insert(void (*func)(), int arg, int type, int time)
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38 {
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39 reg struct delayed_action *dev;
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40
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41 if (demoncnt < MAXDAEMONS) {
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42 dev = &d_list[demoncnt];
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43 dev->d_type = type;
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44 dev->d_time = time;
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45 dev->d_func = func;
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46 dev->d_arg = arg;
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47 demoncnt += 1;
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48 return dev;
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49 }
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50 return NULL;
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51 }
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52
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53 void
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54 d_delete(struct delayed_action *wire)
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55 {
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56 reg struct delayed_action *d1, *d2;
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57
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58 for (d1 = d_list; d1 < &d_list[demoncnt]; d1++) {
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59 if (wire == d1) {
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60 for (d2 = d1 + 1; d2 < &d_list[demoncnt]; d2++)
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61 *d1++ = *d2;
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62 demoncnt -= 1;
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63 d1 = &d_list[demoncnt];
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64 d1->d_type = EMPTY;
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65 d1->d_func = EMPTY;
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66 return;
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67 }
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68 }
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69 }
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70 /*
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71 * find_slot:
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72 * Find a particular slot in the table
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73 */
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74 struct delayed_action *
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75 find_slot(void (*func)())
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76 {
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77 reg struct delayed_action *dev;
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78
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79 for (dev = d_list; dev < &d_list[demoncnt]; dev++)
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80 if (dev->d_type != EMPTY && func == dev->d_func)
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81 return dev;
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82 return NULL;
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83 }
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84
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85 /*
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86 * start_daemon:
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87 * Start a daemon, takes a function.
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88 */
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89 void
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90 start_daemon(void (*func)(), int arg, int type)
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91 {
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92 d_insert(func, arg, type, DAEMON);
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93 }
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94
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95 /*
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96 * do_daemons:
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97 * Run all the daemons that are active with the current
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98 * flag, passing the argument to the function.
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99 */
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100 void
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101 do_daemons(int flag)
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102 {
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103 reg struct delayed_action *dev;