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annotate rogue4/daemon.c @ 117:2c62bd925c17

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rogue5: save the game when SIGHUP is received. This vital feature was turned off by default, requiring DUMP to be defined to turn it on. DUMP has the opposite effect in the other games.
author John "Elwin" Edwards
date Sat, 26 Apr 2014 08:52:26 -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 /*
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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