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annotate srogue/daemon.c @ 162:600873555ec0

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Don't swap signal handlers in md_shellescape(). md_shellescape() sets SIGINT and SIGQUIT to be ignored, storing the previous handlers, and restores them after the shell exits. But it mixed up the two handlers. Since the signals were usually handled by the same function, this fix doesn't have much effect, but anything that makes signal code less confusing is a good thing.
author John "Elwin" Edwards
date Mon, 08 Jun 2015 10:01:25 -0400
parents d6b7c3fb37ea
children 94a0d9dd5ce1
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36
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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(func, arg, type, time)
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38 int arg, type, time, (*func)();
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39 {
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40 reg struct delayed_action *dev;
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41
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42 if (demoncnt < MAXDAEMONS) {
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43 dev = &d_list[demoncnt];
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44 dev->d_type = type;
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45 dev->d_time = time;
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46 dev->d_func = func;
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47 dev->d_arg = arg;
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48 demoncnt += 1;
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49 return dev;
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50 }
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51 return NULL;
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52 }
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53
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54 d_delete(wire)
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55 struct delayed_action *wire;
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56 {
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57 reg struct delayed_action *d1, *d2;
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58
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59 for (d1 = d_list; d1 < &d_list[demoncnt]; d1++) {
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60 if (wire == d1) {
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61 for (d2 = d1 + 1; d2 < &d_list[demoncnt]; d2++)
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62 *d1++ = *d2;
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63 demoncnt -= 1;
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64 d1 = &d_list[demoncnt];
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65 d1->d_type = EMPTY;
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66 d1->d_func = EMPTY;
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67 return;
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68 }
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69 }
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70 }
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71 /*
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72 * find_slot:
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73 * Find a particular slot in the table
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74 */
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75 struct delayed_action *
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76 find_slot(func)
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77 int (*func)();
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78 {
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79 reg struct delayed_action *dev;
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80
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81 for (dev = d_list; dev < &d_list[demoncnt]; dev++)
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82 if (dev->d_type != EMPTY && func == dev->d_func)
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83 return dev;
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84 return NULL;
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85 }
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86
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87 /*
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88 * start_daemon:
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89 * Start a daemon, takes a function.
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90 */
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91 start_daemon(func, arg, type)
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92 int arg, type, (*func)();
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93 {
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94 d_insert(func, arg, type, DAEMON);
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95 }
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96
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97 /*
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98 * do_daemons:
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99 * Run all the daemons that are active with the current
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100 * flag, passing the argument to the function.
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101 */
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102 do_daemons(flag)
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103 int flag;
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104 {
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105 reg struct delayed_action *dev;
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