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annotate xrogue/daemon.c @ 133:e6179860cb76

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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
author John "Elwin" Edwards
date Tue, 21 Apr 2015 08:55:20 -0400
parents
children cfa9d1609b78
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133
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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 XRogue: Expeditions into the Dungeons of Doom
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5 Copyright (C) 1991 Robert Pietkivitch
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6 All rights reserved.
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7
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8 Based on "Advanced Rogue"
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9 Copyright (C) 1984, 1985 Michael Morgan, Ken Dalka and AT&T
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10 All rights reserved.
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11
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12 Based on "Rogue: Exploring the Dungeons of Doom"
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13 Copyright (C) 1980, 1981 Michael Toy, Ken Arnold and Glenn Wichman
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14 All rights reserved.
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15
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16 See the file LICENSE.TXT for full copyright and licensing information.
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17 */
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18
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19 #include <curses.h>
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20 #include "rogue.h"
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21
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22 #define EMPTY 0
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23 #define DAEMON -1
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24
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25 #define _X_ { EMPTY }
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26
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27 struct delayed_action {
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28 int d_type;
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29 int (*d_func)();
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30 VOID *d_arg;
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31 int d_time;
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32 } ;
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33 struct delayed_action d_list[MAXDAEMONS] = {
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34 _X_, _X_, _X_, _X_, _X_, _X_, _X_, _X_, _X_, _X_
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35 };
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36 struct delayed_action f_list[MAXFUSES] = {
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37 _X_, _X_, _X_, _X_, _X_, _X_, _X_, _X_, _X_, _X_,
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38 _X_, _X_, _X_, _X_, _X_, _X_, _X_, _X_, _X_, _X_
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39 };
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40
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41 int demoncnt = 0; /* number of active daemons */
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42 int fusecnt = 0;
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43
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44
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45 /*
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46 * d_slot:
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47 * Find an empty slot in the daemon list
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48 */
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49 struct delayed_action *
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50 d_slot()
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51 {
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52 reg int i;
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53 reg struct delayed_action *dev;
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54
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55 for (i = 0, dev = d_list; i < MAXDAEMONS; i++, dev++)
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56 if (dev->d_type == EMPTY)
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57 return dev;
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58 return NULL;
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59 }
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60
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61 /*
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62 * f_slot:
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63 * Find an empty slot in the fuses list
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64 */
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65 struct delayed_action *
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66 f_slot()
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67 {
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68 reg int i;
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69 reg struct delayed_action *dev;
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70
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71 for (i = 0, dev = f_list; i < MAXFUSES; i++, dev++)
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72 if (dev->d_type == EMPTY)
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73 return dev;
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74 return NULL;
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75 }
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76
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77 /*
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78 * find_slot:
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79 * Find a particular slot in the table
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80 */
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81
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82 struct delayed_action *
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83 find_slot(func)
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84 reg int (*func)();
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85 {
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86 reg int i;
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87 reg struct delayed_action *dev;
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88
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89 for (i = 0, dev = f_list; i < MAXFUSES; i++, dev++)
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90 if (dev->d_type != EMPTY && func == dev->d_func)
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91 return dev;
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92 return NULL;
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93 }
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94
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95 /*
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96 * daemon:
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97 * Start a daemon, takes a function.
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98 */
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99
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100 daemon(dfunc, arg, type)
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101 reg VOID *arg;
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102 reg int type, (*dfunc)();
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103 {
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104 reg struct delayed_action *dev;
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105
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106 dev = d_slot();
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107 if (dev != NULL) {
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108 dev->d_type = type;
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109 dev->d_func = dfunc;
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110 dev->d_arg = arg;
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111 dev->d_time = DAEMON;
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112 demoncnt += 1; /* update count */
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113 }
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114 }
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115
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116 /*
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117 * kill_daemon:
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118 * Remove a daemon from the list
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119 */
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120
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121 kill_daemon(dfunc)
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122 reg int (*dfunc)();
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123 {
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124 reg struct delayed_action *dev;
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125 reg int i;
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126
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127 for (i = 0, dev = d_list; i < MAXDAEMONS; i++, dev++) {
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128 if (dev->d_type != EMPTY && dfunc == dev->d_func)
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129 break;
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130 }
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131 if (i >= MAXDAEMONS) return; /* if not found, forget it */
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132 /*
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133 * Take it out of the list
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134 */
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135 dev->d_type = EMPTY;
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136 dev->d_arg = NULL;
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137 dev->d_func = NULL;
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138 dev->d_time = 0;
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139
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140 demoncnt -= 1; /* update count */
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141 }
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142
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143 /*
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144 * do_daemons:
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145 * Run all the daemons that are active with the current flag,
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146 * passing the argument to the function.
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147 */
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148
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149 do_daemons(flag)
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150 reg int flag;
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151 {
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152 struct delayed_action *dev;
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153 int i;
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154
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155 /*
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156 * Loop through the devil list
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157 */
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158 for (i = 0; i < MAXDAEMONS; i++)
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159 {
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160 dev = &d_list[i];
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161 /*
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162 * Executing each one, giving it the proper arguments
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163 */
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164 if ((dev->d_type == flag) && (dev->d_time == DAEMON) && (dev->d_func != NULL))
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165 (*dev->d_func)(dev->d_arg);
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166 }
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167 }
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168
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169 /*
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170 * fuse:
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171 * Start a fuse to go off in a certain number of turns
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172 */
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173
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174 fuse(dfunc, arg, time, type)
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175 VOID *arg;
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176 reg int (*dfunc)(), time, type;
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177 {
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178 reg struct delayed_action *wire;
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179
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180 wire = f_slot();
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181 if (wire != NULL) {
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182 wire->d_type = type;
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183 wire->d_func = dfunc;
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184 wire->d_arg = arg;
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185 wire->d_time = time;
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186 fusecnt += 1; /* update count */
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187 }
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188 }
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189
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190 /*
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191 * lengthen:
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192 * Increase the time until a fuse goes off
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193 */
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194
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195 lengthen(dfunc, xtime)
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196 reg int (*dfunc)(), xtime;
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197 {
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198 reg struct delayed_action *wire;
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199
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200 if ((wire = find_slot(dfunc)) == NULL)
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201 return;
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202 wire->d_time += xtime;
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203 }
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204
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205 /*
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206 * extinguish:
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207 * Put out a fuse
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208 */
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209
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210 extinguish(dfunc)
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211 reg int (*dfunc)();
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212 {
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213 reg struct delayed_action *wire;
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214
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215 if ((wire = find_slot(dfunc)) == NULL)
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216 return;
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217 wire->d_type = EMPTY;
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218 wire->d_func = NULL;
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219 wire->d_arg = NULL;
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220 wire->d_time = 0;
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221 fusecnt -= 1;
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222 }
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223
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224 /*
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225 * do_fuses:
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226 * Decrement counters and start needed fuses
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227 */
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228
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229 do_fuses(flag)
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230 reg int flag;
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231 {
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232 struct delayed_action *wire;
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233 int i;
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234
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235 /*
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236 * Step though the list
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237 */
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238 for (i = 0; i < MAXFUSES; i++) {
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239 wire = &f_list[i];
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240 /*
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241 * Decrementing counters and starting things we want. We also need
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242 * to remove the fuse from the list once it has gone off.
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243 */
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244 if(flag == wire->d_type && wire->d_time > 0 &&
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245 --wire->d_time == 0) {
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246 wire->d_type = EMPTY;
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247 if (wire->d_func != NULL)
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248 (*wire->d_func)(wire->d_arg);
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249 fusecnt -= 1;
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250 }
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251 }
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252 }
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253
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254 /*
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255 * activity:
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256 * Show wizard number of demaons and memory blocks used
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257 */
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258
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259 activity()
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260 {
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261 msg("Daemons = %d : Fuses = %d : Memory Items = %d : Memory Used = %d",
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262 demoncnt,fusecnt,total,md_memused());
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263 }
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264