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annotate rogue3/daemon.c @ 255:69ffcb6b90da

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Merge the bugfix branch, which had missed an update.
author John "Elwin" Edwards
date Fri, 10 Feb 2017 09:06:50 -0500
parents 527e2150eaf0
children
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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 3.3 (Berkeley) 6/15/81
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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 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 #define MAXDAEMONS 20
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20
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21 #define _X_ { EMPTY }
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22
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23 struct delayed_action d_list[MAXDAEMONS] = {
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24 _X_, _X_, _X_, _X_, _X_, _X_, _X_, _X_, _X_, _X_,
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25 _X_, _X_, _X_, _X_, _X_, _X_, _X_, _X_, _X_, _X_,
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26 };
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27
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28 /*
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29 * d_slot:
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30 * Find an empty slot in the daemon/fuse list
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31 */
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32 struct delayed_action *
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33 d_slot()
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34 {
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35 register int i;
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36 register struct delayed_action *dev;
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37
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38 for (i = 0, dev = d_list; i < MAXDAEMONS; i++, dev++)
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39 if (dev->d_type == EMPTY)
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40 return dev;
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41 debug("Ran out of fuse slots");
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42 return NULL;
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43 }
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44
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45 /*
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46 * find_slot:
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47 * Find a particular slot in the table
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48 */
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49
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50 struct delayed_action *
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51 find_slot(void (*func)())
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52 {
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53 register int i;
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54 register struct delayed_action *dev;
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55
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56 for (i = 0, dev = d_list; i < MAXDAEMONS; i++, dev++)
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57 if (dev->d_type != EMPTY && func == dev->d_func)
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58 return dev;
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59 return NULL;
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60 }
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61
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62 /*
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63 * daemon:
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64 * Start a daemon, takes a function.
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65 */
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66
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67 void
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68 start_daemon(void (*func)(), int arg, int 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
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74 if (dev != NULL)
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75 {
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76 dev->d_type = type;
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77 dev->d_func = func;
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78 dev->d_arg = arg;
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79 dev->d_time = DAEMON;
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80 }
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81 }
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82
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83 /*
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84 * kill_daemon:
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85 * Remove a daemon from the list
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86 */
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87
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88 void
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89 kill_daemon(void (*func)())
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90 {
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91 register struct delayed_action *dev;
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92
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93 if ((dev = find_slot(func)) == NULL)
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94 return;
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95 /*
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96 * Take it out of the list
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97 */
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98 dev->d_type = EMPTY;
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99 }
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100
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101 /*
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102 * do_daemons:
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103 * Run all the daemons that are active with the current flag,
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104 * passing the argument to the function.
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105 */
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106
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