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annotate arogue7/daemon.c @ 238:e1cd27c5464f

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arogue7, xrogue: improve the handling of the arguments to fuses. fuse() now expects a pointer as the argument to a fuse function. If this is one of the functions that takes int, fuse() follows the pointer and stores that value in the f_list slot, in the integer field of the argument union. When the fuse goes off, do_fuses() recognizes the function and passes it the integer field instead of the pointer. This has the disadvantage of hard-coding the functions that require int in daemon.c, but since the int is copied into f_list, it no longer has to be in static or global memory, which simplifies several files.
author John "Elwin" Edwards
date Fri, 11 Mar 2016 17:40:00 -0500
parents b67b99f6c92b
children
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1 /*
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2 * daemon.c - functions for dealing with things that happen in the future.
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3 *
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4 * Advanced Rogue
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5 * Copyright (C) 1984, 1985, 1986 Michael Morgan, Ken Dalka and AT&T
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6 * All rights reserved.
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7 *
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8 * Based on "Rogue: Exploring the Dungeons of Doom"
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9 * Copyright (C) 1980, 1981 Michael Toy, Ken Arnold and Glenn Wichman
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10 * All rights reserved.
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11 *
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12 * See the file LICENSE.TXT for full copyright and licensing information.
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13 */
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14
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15 /*
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16 * Contains functions for dealing with things that happen in the
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17 * future.
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18 *
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19 */
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20
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21 #include "curses.h"
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22 #include "rogue.h"
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23
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24 #define EMPTY 0
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25 #define DAEMON -1
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26 #define MAXDAEMONS 10
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27 #define MAXFUSES 20
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28
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29 #define _X_ { EMPTY }
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30
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31 struct delayed_action d_list[MAXDAEMONS] = {
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32 _X_, _X_, _X_, _X_, _X_, _X_, _X_, _X_, _X_, _X_
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33 };
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34 struct delayed_action f_list[MAXFUSES] = {
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35 _X_, _X_, _X_, _X_, _X_, _X_, _X_, _X_, _X_, _X_,
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36 _X_, _X_, _X_, _X_, _X_, _X_, _X_, _X_, _X_, _X_
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37 };
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38 int demoncnt = 0; /* number of active daemons */
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39 int fusecnt = 0;
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42 /*
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43 * d_slot:
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44 * Find an empty slot in the daemon list
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45 */
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46 struct delayed_action *
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47 d_slot(void)
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48 {
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49 reg int i;
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50 reg struct delayed_action *dev;
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51
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52 for (i = 0, dev = d_list; i < MAXDAEMONS; i++, dev++)
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53 if (dev->d_type == EMPTY)
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54 return dev;
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55 return NULL;
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56 }
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57
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58 /*
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59 * f_slot:
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60 * Find an empty slot in the fuses list
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61 */
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62 struct delayed_action *
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63 f_slot(void)
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64 {
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65 reg int i;
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66 reg struct delayed_action *dev;
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67
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68 for (i = 0, dev = f_list; i < MAXFUSES; i++, dev++)
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69 if (dev->d_type == EMPTY)
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70 return dev;
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71 return NULL;
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72 }
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73
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74
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75
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76 /*
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77 * find_slot:
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78 * Find a particular slot in the table
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79 */
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80 struct delayed_action *
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81 find_slot(void (*func)())
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82 {
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83 reg int i;
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84 reg struct delayed_action *dev;
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85
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86 for (i = 0, dev = f_list; i < MAXFUSES; i++, dev++)
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87 if (dev->d_type != EMPTY && func == dev->d_func)
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88 return dev;
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89 return NULL;
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90 }
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91