1 | /* |
1 | /* |
2 | iom.C -- generic I/O multiplexor |
2 | iom.C -- generic I/O multiplexer |
3 | Copyright (C) 2003 Marc Lehmann <pcg@goof.com> |
3 | Copyright (C) 2003-2006 Marc Lehmann <gvpe@schmorp.de> |
4 | |
4 | |
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5 | This file is part of GVPE. |
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6 | |
5 | This program is free software; you can redistribute it and/or modify |
7 | GVPE is free software; you can redistribute it and/or modify |
6 | it under the terms of the GNU General Public License as published by |
8 | it under the terms of the GNU General Public License as published by |
7 | the Free Software Foundation; either version 2 of the License, or |
9 | the Free Software Foundation; either version 2 of the License, or |
8 | (at your option) any later version. |
10 | (at your option) any later version. |
9 | |
11 | |
10 | This program is distributed in the hope that it will be useful, |
12 | This program is distributed in the hope that it will be useful, |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
13 | GNU General Public License for more details. |
15 | GNU General Public License for more details. |
14 | |
16 | |
15 | You should have received a copy of the GNU General Public License |
17 | You should have received a copy of the GNU General Public License |
16 | along with this program; if not, write to the Free Software |
18 | along with gvpe; if not, write to the Free Software |
17 | Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
19 | Foundation, Inc. 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
18 | */ |
20 | */ |
19 | |
21 | |
20 | #include "../config.h" |
22 | #include "iom.h" |
21 | |
23 | |
22 | #include <cstdio> |
24 | #include <cstdio> |
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25 | #include <cstdlib> |
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26 | #include <cerrno> |
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27 | #include <cassert> |
23 | |
28 | |
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29 | #include <sys/types.h> |
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30 | #include <sys/time.h> |
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31 | |
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32 | #if 1 // older unices need these includes for select (2) |
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33 | # include <unistd.h> |
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34 | # include <time.h> |
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35 | #endif |
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36 | |
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37 | #if IOM_CHILD |
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38 | # include <sys/wait.h> |
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39 | #endif |
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40 | |
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41 | #if IOM_SIG |
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42 | # include <csignal> |
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43 | # include <fcntl.h> |
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44 | #endif |
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45 | |
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46 | // if the BSDs would at least be marginally POSIX-compatible.. *sigh* |
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47 | // until that happens, sys/select.h must come last |
24 | #include <sys/select.h> |
48 | #include <sys/select.h> |
25 | #include <sys/time.h> |
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26 | |
49 | |
27 | #include "iom.h" |
50 | #define TIMEVAL timeval |
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51 | #define TV_FRAC tv_usec |
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52 | #define TV_MULT 1000000L |
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53 | |
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54 | #if IOM_IO |
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55 | static io_manager_vec<io_watcher> iow; |
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56 | #endif |
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57 | #if IOM_CHECK |
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58 | static io_manager_vec<check_watcher> cw; |
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59 | #endif |
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60 | #if IOM_TIME |
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61 | static io_manager_vec<time_watcher> tw; |
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62 | #endif |
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63 | #if IOM_IDLE |
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64 | static io_manager_vec<idle_watcher> iw; |
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65 | #endif |
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66 | #if IOM_SIG |
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67 | static int sigpipe[2]; // signal signalling pipe |
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68 | static sigset_t sigs; |
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69 | struct sig_vec : io_manager_vec<sig_watcher> { |
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70 | int pending; |
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71 | sig_vec () |
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72 | : pending (false) |
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73 | { } |
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74 | }; |
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75 | static vector<sig_vec *> sw; |
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76 | #endif |
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77 | #if IOM_CHILD |
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78 | static io_manager_vec<child_watcher> pw; |
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79 | #endif |
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80 | |
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81 | // this is a dummy time watcher to ensure that the first |
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82 | // time watcher is _always_ valid, this gets rid of a lot |
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83 | // of null-pointer-checks |
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84 | // (must come _before_ iom is being defined) |
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85 | static struct tw0 : time_watcher |
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86 | { |
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87 | void cb (time_watcher &w) |
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88 | { |
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89 | // should never get called |
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90 | // reached end-of-time, or tstamp has a bogus definition, |
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91 | // or compiler initialisation order broken, or something else :) |
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92 | abort (); |
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93 | } |
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94 | |
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95 | tw0 () |
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96 | : time_watcher (this, &tw0::cb) |
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97 | { } |
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98 | } tw0; |
28 | |
99 | |
29 | tstamp NOW; |
100 | tstamp NOW; |
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101 | |
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102 | #if IOM_CHILD |
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103 | // sig_watcher for child signal(s) |
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104 | static struct sw0 : sig_watcher |
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105 | { |
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106 | void cb (sig_watcher &w) |
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107 | { |
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108 | // SIGCHLD, call corresponding watchera |
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109 | pid_t pid; |
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110 | int status; |
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111 | |
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112 | while ((pid = waitpid (-1, &status, WNOHANG)) > 0) |
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113 | for (int i = pw.size (); i--; ) |
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114 | { |
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115 | child_watcher *w = pw[i]; |
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116 | |
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117 | if (!w) |
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118 | pw.erase_unordered (i); |
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119 | else if (w->pid == pid) |
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120 | { |
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121 | io_manager::unreg (*w); |
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122 | w->call (*w, status); |
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123 | } |
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124 | } |
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125 | } |
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126 | |
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127 | sw0 () |
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128 | : sig_watcher (this, &sw0::cb) |
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129 | { } |
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130 | } sw0; |
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131 | #endif |
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132 | |
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133 | #if IOM_TIME |
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134 | tstamp io_manager::now () |
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135 | { |
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136 | struct timeval tv; |
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137 | |
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138 | gettimeofday (&tv, 0); |
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139 | return (tstamp)tv.tv_sec + (tstamp)tv.tv_usec / 1000000.; |
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140 | } |
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141 | |
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142 | void io_manager::set_now () |
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143 | { |
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144 | NOW = now (); |
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145 | } |
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146 | #endif |
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147 | |
30 | bool iom_valid; |
148 | static bool iom_valid; |
31 | io_manager iom; |
149 | |
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150 | // used for initialisation only |
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151 | static struct init { |
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152 | init () |
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153 | { |
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154 | #ifdef IOM_PREINIT |
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155 | { IOM_PREINIT } |
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156 | #endif |
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157 | iom_valid = true; |
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158 | |
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159 | #if IOM_SIG |
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160 | sigemptyset (&sigs); |
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161 | |
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162 | if (pipe (sigpipe)) |
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163 | { |
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164 | perror ("io_manager: unable to create signal pipe, aborting."); |
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165 | abort (); |
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166 | } |
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167 | |
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168 | fcntl (sigpipe[0], F_SETFL, O_NONBLOCK); fcntl (sigpipe[0], F_SETFD, FD_CLOEXEC); |
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169 | fcntl (sigpipe[1], F_SETFL, O_NONBLOCK); fcntl (sigpipe[1], F_SETFD, FD_CLOEXEC); |
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170 | #endif |
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171 | |
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172 | #if IOM_CHILD |
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173 | sw0.start (SIGCHLD); |
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174 | #endif |
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175 | |
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176 | #if IOM_TIME |
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177 | io_manager::set_now (); |
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178 | |
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179 | tw0.start (TSTAMP_MAX); |
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180 | #endif |
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181 | |
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182 | #ifdef IOM_POSTINIT |
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183 | { IOM_POSTINIT } |
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184 | #endif |
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185 | } |
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186 | |
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187 | ~init () |
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188 | { |
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189 | iom_valid = false; |
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190 | } |
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191 | |
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192 | static void required (); |
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193 | } init; |
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194 | |
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195 | void |
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196 | init::required () |
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197 | { |
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198 | if (!iom_valid) |
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199 | { |
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200 | write (2, "io_manager: early registration attempt, aborting.\n", |
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201 | sizeof ("io_manager: early registration attempt, aborting.\n") - 1); |
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202 | abort (); |
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203 | } |
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204 | } |
32 | |
205 | |
33 | template<class watcher> |
206 | template<class watcher> |
34 | void io_manager::reg (watcher *w, simplevec<watcher *> &queue) |
207 | void io_manager::reg (watcher &w, io_manager_vec<watcher> &queue) |
35 | { |
208 | { |
36 | if (find (queue.begin (), queue.end (), w) == queue.end ()) |
209 | init::required (); |
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210 | |
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211 | if (!w.active) |
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212 | { |
37 | queue.push_back (w); |
213 | queue.push_back (&w); |
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214 | w.active = queue.size (); |
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215 | } |
38 | } |
216 | } |
39 | |
217 | |
40 | template<class watcher> |
218 | template<class watcher> |
41 | void io_manager::unreg (watcher *w, simplevec<watcher *> &queue) |
219 | void io_manager::unreg (watcher &w, io_manager_vec<watcher> &queue) |
42 | { |
220 | { |
43 | queue.erase (find (queue.begin (), queue.end (), w)); |
221 | if (!iom_valid) |
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222 | return; |
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223 | |
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224 | if (w.active) |
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225 | { |
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226 | queue [w.active - 1] = 0; |
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227 | w.active = 0; |
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228 | } |
44 | } |
229 | } |
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230 | |
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231 | #if IOM_TIME |
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232 | void time_watcher::trigger () |
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233 | { |
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234 | call (*this); |
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235 | io_manager::reg (*this); |
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236 | } |
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237 | |
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238 | void io_manager::reg (time_watcher &w) { io_manager::reg (w, tw); } |
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239 | void io_manager::unreg (time_watcher &w) { io_manager::unreg (w, tw); } |
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240 | #endif |
45 | |
241 | |
46 | #if IOM_IO |
242 | #if IOM_IO |
47 | io_watcher::~io_watcher () |
243 | void io_manager::reg (io_watcher &w) { io_manager::reg (w, iow); } |
48 | { |
244 | void io_manager::unreg (io_watcher &w) { io_manager::unreg (w, iow); } |
49 | if (iom_valid) |
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50 | iom.unreg (this); |
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51 | } |
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52 | |
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53 | void io_manager::reg (io_watcher *w) |
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54 | { |
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55 | reg (w, iow); |
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56 | } |
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57 | |
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58 | void io_manager::unreg (io_watcher *w) |
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59 | { |
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60 | unreg (w, iow); |
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61 | } |
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62 | |
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63 | #endif |
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64 | |
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65 | #if IOM_TIME |
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66 | void time_watcher::trigger () |
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67 | { |
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68 | call (*this); |
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69 | |
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70 | iom.reg (this); |
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71 | } |
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72 | |
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73 | time_watcher::~time_watcher () |
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74 | { |
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75 | if (iom_valid) |
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76 | iom.unreg (this); |
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77 | |
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78 | at = TSTAMP_CANCEL; |
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79 | } |
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80 | |
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81 | void io_manager::reg (time_watcher *w) |
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82 | { |
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83 | reg (w, tw); |
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84 | } |
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85 | |
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86 | void io_manager::unreg (time_watcher *w) |
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87 | { |
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88 | unreg (w, tw); |
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89 | } |
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90 | #endif |
245 | #endif |
91 | |
246 | |
92 | #if IOM_CHECK |
247 | #if IOM_CHECK |
93 | check_watcher::~check_watcher () |
248 | void io_manager::reg (check_watcher &w) { io_manager::reg (w, cw); } |
94 | { |
249 | void io_manager::unreg (check_watcher &w) { io_manager::unreg (w, cw); } |
95 | if (iom_valid) |
250 | #endif |
96 | iom.unreg (this); |
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97 | } |
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98 | |
251 | |
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252 | #if IOM_IDLE |
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253 | void io_manager::reg (idle_watcher &w) { io_manager::reg (w, iw); } |
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254 | void io_manager::unreg (idle_watcher &w) { io_manager::unreg (w, iw); } |
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255 | #endif |
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256 | |
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257 | #if IOM_SIG |
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258 | static void |
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259 | sighandler (int signum) |
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260 | { |
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261 | sw [signum - 1]->pending = true; |
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262 | |
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263 | // we use a pipe for signal notifications, as most current |
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264 | // OSes (Linux...) do not implement pselect correctly. ugh. |
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265 | char ch = signum; // actual content not used |
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266 | write (sigpipe[1], &ch, 1); |
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267 | } |
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268 | |
99 | void io_manager::reg (check_watcher *w) |
269 | void io_manager::reg (sig_watcher &w) |
100 | { |
270 | { |
101 | reg (w, cw); |
271 | init::required (); |
102 | } |
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103 | |
272 | |
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273 | assert (0 < w.signum); |
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274 | |
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275 | sw.reserve (w.signum); |
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276 | |
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277 | while (sw.size () < w.signum) // pathetic |
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278 | sw.push_back (0); |
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279 | |
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280 | sig_vec *&sv = sw[w.signum - 1]; |
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281 | |
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282 | if (!sv) |
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283 | { |
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284 | sv = new sig_vec; |
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285 | |
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286 | sigaddset (&sigs, w.signum); |
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287 | sigprocmask (SIG_BLOCK, &sigs, NULL); |
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288 | |
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289 | struct sigaction sa; |
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290 | sa.sa_handler = sighandler; |
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291 | sigfillset (&sa.sa_mask); |
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292 | sa.sa_flags = SA_RESTART; |
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293 | |
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294 | if (sigaction (w.signum, &sa, 0)) |
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295 | { |
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296 | perror ("io_manager: error while installing signal handler, ignoring."); |
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297 | abort (); |
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298 | } |
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299 | |
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300 | } |
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301 | |
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302 | io_manager::reg (w, *sv); |
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303 | } |
|
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304 | |
104 | void io_manager::unreg (check_watcher *w) |
305 | void io_manager::unreg (sig_watcher &w) |
105 | { |
306 | { |
106 | unreg (w, cw); |
307 | if (!w.active || !iom_valid) |
107 | } |
308 | return; |
108 | #endif |
|
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109 | |
309 | |
110 | #if IOM_TIME |
310 | assert (0 < w.signum && w.signum <= sw.size ()); |
111 | inline void set_now (void) |
311 | |
112 | { |
312 | io_manager::unreg (w, *sw[w.signum - 1]); |
113 | struct timeval tv; |
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114 | |
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115 | gettimeofday (&tv, 0); |
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116 | |
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117 | NOW = (tstamp)tv.tv_sec + (tstamp)tv.tv_usec / 1000000; |
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118 | #endif |
|
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119 | } |
313 | } |
|
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314 | |
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315 | void sig_watcher::start (int signum) |
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316 | { |
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317 | stop (); |
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318 | this->signum = signum; |
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319 | io_manager::reg (*this); |
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320 | } |
|
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321 | #endif |
|
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322 | |
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323 | #if IOM_CHILD |
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324 | void io_manager::reg (child_watcher &w) { io_manager::reg (w, pw); } |
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325 | void io_manager::unreg (child_watcher &w) { io_manager::unreg (w, pw); } |
|
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326 | #endif |
120 | |
327 | |
121 | void io_manager::loop () |
328 | void io_manager::loop () |
122 | { |
329 | { |
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330 | init::required (); |
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331 | |
123 | #if IOM_TIME |
332 | #if IOM_TIME |
124 | set_now (); |
333 | set_now (); |
125 | #endif |
334 | #endif |
126 | |
335 | |
127 | for (;;) |
336 | for (;;) |
128 | { |
337 | { |
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338 | |
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339 | #if IOM_TIME |
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340 | // call pending time watchers |
|
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341 | { |
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342 | bool activity; |
|
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343 | |
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344 | do |
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345 | { |
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346 | activity = false; |
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347 | |
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348 | for (int i = tw.size (); i--; ) |
|
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349 | if (!tw[i]) |
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350 | tw.erase_unordered (i); |
|
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351 | else if (tw[i]->at <= NOW) |
|
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352 | { |
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353 | time_watcher &w = *tw[i]; |
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354 | |
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355 | unreg (w); |
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356 | w.call (w); |
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357 | |
|
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358 | activity = true; |
|
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359 | } |
|
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360 | } |
|
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361 | while (activity); |
|
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362 | } |
|
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363 | #endif |
|
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364 | |
|
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365 | #if IOM_CHECK |
|
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366 | // call all check watchers |
|
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367 | for (int i = cw.size (); i--; ) |
|
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368 | if (!cw[i]) |
|
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369 | cw.erase_unordered (i); |
|
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370 | else |
|
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371 | cw[i]->call (*cw[i]); |
|
|
372 | #endif |
|
|
373 | |
129 | struct timeval *to = 0; |
374 | struct TIMEVAL *to = 0; |
|
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375 | struct TIMEVAL tval; |
130 | |
376 | |
131 | #if IOM_TIME |
377 | #if IOM_IDLE |
132 | struct timeval tval; |
|
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133 | time_watcher *w; |
|
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134 | |
|
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135 | for (;tw.size ();) |
378 | if (iw.size ()) |
136 | { |
379 | { |
137 | w = tw[0]; |
380 | tval.tv_sec = 0; |
|
|
381 | tval.TV_FRAC = 0; |
|
|
382 | to = &tval; |
|
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383 | } |
|
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384 | else |
|
|
385 | #endif |
|
|
386 | { |
|
|
387 | #if IOM_TIME |
|
|
388 | // find earliest active watcher |
|
|
389 | time_watcher *next = tw[0]; // the first time-watcher must exist at ALL times |
138 | |
390 | |
139 | for (time_watcher **i = tw.begin (); i < tw.end (); ++i) |
391 | for (io_manager_vec<time_watcher>::const_iterator i = tw.end (); i-- > tw.begin (); ) |
140 | if ((*i)->at < w->at) |
392 | if (*i && (*i)->at < next->at) |
141 | w = *i; |
393 | next = *i; |
142 | |
394 | |
143 | if (w->at > NOW) |
395 | if (next->at > NOW && next != tw[0]) |
144 | { |
396 | { |
145 | double diff = w->at - NOW; |
397 | double diff = next->at - NOW; |
146 | tval.tv_sec = (int)diff; |
398 | tval.tv_sec = (int)diff; |
147 | tval.tv_usec = (int)((diff - tval.tv_sec) * 1000000); |
399 | tval.TV_FRAC = (int) ((diff - tval.tv_sec) * TV_MULT); |
148 | to = &tval; |
400 | to = &tval; |
149 | break; |
|
|
150 | } |
401 | } |
151 | else if (w->at >= 0) |
|
|
152 | w->call (*w); |
|
|
153 | else |
|
|
154 | unreg (w); |
|
|
155 | } |
402 | } |
156 | #endif |
403 | #endif |
157 | |
404 | |
158 | #if IOM_CHECK |
405 | #if IOM_IO || IOM_SIG |
159 | for (int i = 0; i < cw.size (); ++i) |
|
|
160 | cw[i]->call (*cw[i]); |
|
|
161 | #endif |
|
|
162 | |
|
|
163 | #if IOM_IO |
|
|
164 | fd_set rfd, wfd; |
406 | fd_set rfd, wfd; |
165 | |
407 | |
166 | FD_ZERO (&rfd); |
408 | FD_ZERO (&rfd); |
167 | FD_ZERO (&wfd); |
409 | FD_ZERO (&wfd); |
168 | |
410 | |
169 | int fds = 0; |
411 | int fds = 0; |
170 | |
412 | |
171 | for (io_watcher **w = iow.begin (); w < iow.end (); ++w) |
413 | # if IOM_IO |
|
|
414 | for (io_manager_vec<io_watcher>::const_iterator i = iow.end (); i-- > iow.begin (); ) |
|
|
415 | if (*i) |
|
|
416 | { |
|
|
417 | if ((*i)->events & EVENT_READ ) FD_SET ((*i)->fd, &rfd); |
|
|
418 | if ((*i)->events & EVENT_WRITE) FD_SET ((*i)->fd, &wfd); |
|
|
419 | |
|
|
420 | if ((*i)->fd >= fds) fds = (*i)->fd + 1; |
|
|
421 | } |
|
|
422 | # endif |
|
|
423 | |
|
|
424 | if (!to && !fds) //TODO: also check idle_watchers and check_watchers? |
|
|
425 | break; // no events |
|
|
426 | |
|
|
427 | # if IOM_SIG |
|
|
428 | FD_SET (sigpipe[0], &rfd); |
|
|
429 | if (sigpipe[0] >= fds) fds = sigpipe[0] + 1; |
|
|
430 | # endif |
|
|
431 | |
|
|
432 | # if IOM_SIG |
|
|
433 | // there is no race, as we use a pipe for signals, so select |
|
|
434 | // will return if a signal is caught. |
|
|
435 | sigprocmask (SIG_UNBLOCK, &sigs, NULL); |
|
|
436 | # endif |
|
|
437 | fds = select (fds, &rfd, &wfd, NULL, to); |
|
|
438 | # if IOM_SIG |
|
|
439 | sigprocmask (SIG_BLOCK, &sigs, NULL); |
|
|
440 | # endif |
|
|
441 | |
|
|
442 | # if IOM_TIME |
|
|
443 | { |
|
|
444 | // update time, try to compensate for gross non-monotonic time changes |
|
|
445 | tstamp diff = NOW; |
|
|
446 | set_now (); |
|
|
447 | diff = NOW - diff; |
|
|
448 | |
|
|
449 | if (diff < 0) |
|
|
450 | for (io_manager_vec<time_watcher>::const_iterator i = tw.end (); i-- > tw.begin (); ) |
|
|
451 | if (*i) |
|
|
452 | (*i)->at += diff; |
|
|
453 | } |
|
|
454 | # endif |
|
|
455 | |
|
|
456 | if (fds > 0) |
172 | { |
457 | { |
173 | if ((*w)->events & EVENT_READ ) FD_SET ((*w)->fd, &rfd); |
458 | # if IOM_SIG |
174 | if ((*w)->events & EVENT_WRITE) FD_SET ((*w)->fd, &wfd); |
459 | if (FD_ISSET (sigpipe[0], &rfd)) |
|
|
460 | { |
|
|
461 | char ch; |
175 | |
462 | |
176 | if ((*w)->fd >= fds) fds = (*w)->fd + 1; |
463 | while (read (sigpipe[0], &ch, 1) > 0) |
|
|
464 | ; |
|
|
465 | |
|
|
466 | for (vector<sig_vec *>::iterator svp = sw.end (); svp-- > sw.begin (); ) |
|
|
467 | if (*svp && (*svp)->pending) |
|
|
468 | { |
|
|
469 | sig_vec &sv = **svp; |
|
|
470 | for (int i = sv.size (); i--; ) |
|
|
471 | if (!sv[i]) |
|
|
472 | sv.erase_unordered (i); |
|
|
473 | else |
|
|
474 | sv[i]->call (*sv[i]); |
|
|
475 | |
|
|
476 | sv.pending = false; |
|
|
477 | } |
|
|
478 | } |
|
|
479 | # endif |
|
|
480 | |
|
|
481 | # if IOM_IO |
|
|
482 | for (int i = iow.size (); i--; ) |
|
|
483 | if (!iow[i]) |
|
|
484 | iow.erase_unordered (i); |
|
|
485 | else |
|
|
486 | { |
|
|
487 | io_watcher &w = *iow[i]; |
|
|
488 | short revents = w.events; |
|
|
489 | |
|
|
490 | if (!FD_ISSET (w.fd, &rfd)) revents &= ~EVENT_READ; |
|
|
491 | if (!FD_ISSET (w.fd, &wfd)) revents &= ~EVENT_WRITE; |
|
|
492 | |
|
|
493 | if (revents) |
|
|
494 | w.call (w, revents); |
|
|
495 | } |
|
|
496 | #endif |
177 | } |
497 | } |
178 | |
498 | else if (fds < 0 && errno != EINTR) |
179 | if (!to && !fds) |
499 | { |
180 | break; // no events |
500 | perror ("io_manager: fatal error while waiting for I/O or time event, aborting."); |
181 | |
501 | abort (); |
182 | fds = select (fds, &rfd, &wfd, 0, to); |
502 | } |
183 | # if IOM_TIME |
503 | #if IOM_IDLE |
184 | set_now (); |
504 | else |
|
|
505 | for (int i = iw.size (); i--; ) |
|
|
506 | if (!iw[i]) |
|
|
507 | iw.erase_unordered (i); |
|
|
508 | else |
|
|
509 | iw[i]->call (*iw[i]); |
185 | # endif |
510 | #endif |
186 | |
511 | |
187 | if (fds > 0) |
|
|
188 | for (int i = 0; i < iow.size (); ++i) |
|
|
189 | { |
|
|
190 | io_watcher *w = iow[i]; |
|
|
191 | |
|
|
192 | short revents = w->events; |
|
|
193 | |
|
|
194 | if (!FD_ISSET (w->fd, &rfd)) revents &= ~EVENT_READ; |
|
|
195 | if (!FD_ISSET (w->fd, &wfd)) revents &= ~EVENT_WRITE; |
|
|
196 | |
|
|
197 | if (revents) |
|
|
198 | w->call (*w, revents); |
|
|
199 | } |
|
|
200 | #elif IOM_TIME |
512 | #elif IOM_TIME |
201 | if (!to) |
513 | if (!to) |
202 | break; |
514 | break; |
203 | |
515 | |
204 | select (0, 0, 0, 0, &to); |
516 | select (0, 0, 0, 0, &to); |
… | |
… | |
207 | break; |
519 | break; |
208 | #endif |
520 | #endif |
209 | } |
521 | } |
210 | } |
522 | } |
211 | |
523 | |
212 | io_manager::io_manager () |
|
|
213 | { |
|
|
214 | #if IOM_TIME |
|
|
215 | set_now (); |
|
|
216 | #endif |
|
|
217 | |
|
|
218 | iom_valid = true; |
|
|
219 | } |
|
|
220 | |
|
|
221 | io_manager::~io_manager () |
|
|
222 | { |
|
|
223 | iom_valid = false; |
|
|
224 | } |
|
|
225 | |
|
|