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annotate rogue4/daemon.c @ 113:aa582a02eb5d

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srogue: remove unnecessary pointer cast. Casting char* to int before a comparison doesn't alter the result, and isn't safe if sizeof(char *) != sizeof(int).
author John "Elwin" Edwards
date Thu, 27 Mar 2014 11:09:30 -0700
parents f2951c4e28d9
children 1b73a8641b37
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1 /*
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2 * Contains functions for dealing with things that happen in the
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3 * future.
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4 *
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5 * @(#)daemon.c 4.4 (Berkeley) 1/12/82
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6 *
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7 * Rogue: Exploring the Dungeons of Doom
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8 * Copyright (C) 1980, 1981, 1982 Michael Toy, Ken Arnold and Glenn Wichman
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9 * All rights reserved.
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10 *
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11 * See the file LICENSE.TXT for full copyright and licensing information.
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12 */
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13
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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 #define EMPTY 0
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18 #define DAEMON -1
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19
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20 #define _X_ { EMPTY }
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21
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22 struct delayed_action d_list[MAXDAEMONS] = {
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23 _X_, _X_, _X_, _X_, _X_, _X_, _X_, _X_, _X_, _X_,
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24 _X_, _X_, _X_, _X_, _X_, _X_, _X_, _X_, _X_, _X_,
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25 };
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26
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27 /*
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28 * d_slot:
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29 * Find an empty slot in the daemon/fuse list
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30 */
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31 struct delayed_action *
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32 d_slot()
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33 {
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34 register int i;
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35 register struct delayed_action *dev;
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36
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37 for (i = 0, dev = d_list; i < MAXDAEMONS; i++, dev++)
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38 if (dev->d_type == EMPTY)
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39 return dev;
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40 #ifdef WIZARD
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41 debug("Ran out of fuse slots");
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42 #endif
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43 return NULL;
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44 }
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45
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46 /*
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47 * find_slot:
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48 * Find a particular slot in the table
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49 */
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50 struct delayed_action *
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51 find_slot(func)
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52 register int (*func)();
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53 {
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54 register int i;
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55 register struct delayed_action *dev;
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56
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57 for (i = 0, dev = d_list; i < MAXDAEMONS; i++, dev++)
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58 if (dev->d_type != EMPTY && func == dev->d_func)
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59 return dev;
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60 return NULL;
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61 }
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62
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63 /*
107
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64 * start_daemon:
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65 * Start a daemon, takes a function.
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66 */
107
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67 start_daemon(func, arg, type)
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68 int (*func)(), arg, type;
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69 {
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70 register struct delayed_action *dev;
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71
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72 dev = d_slot();
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73 dev->d_type = type;
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74 dev->d_func = func;
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75 dev->d_arg = arg;
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76 dev->d_time = DAEMON;
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77 }
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78
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79 /*
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80 * kill_daemon:
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81 * Remove a daemon from the list
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82 */
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83 kill_daemon(func)
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84 int (*func)();
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85 {
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86 register struct delayed_action *dev;
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87
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88 if ((dev = find_slot(func)) == NULL)
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89 return;
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90 /*
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91 * Take it out of the list
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92 */
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93 dev->d_type = EMPTY;
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94 }
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95
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96 /*
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97 * do_daemons:
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98 * Run all the daemons that are active with the current flag,
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99 * passing the argument to the function.
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100 */
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101 do_daemons(flag)
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102 register int flag;
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103 {
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104 register struct delayed_action *dev;
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105
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