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| 21 | #include <cstdlib> |
21 | #include <cstdlib> |
| 22 | #include <cerrno> |
22 | #include <cerrno> |
| 23 | |
23 | |
| 24 | #include <sys/time.h> |
24 | #include <sys/time.h> |
| 25 | |
25 | |
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26 | #include <assert.h> |
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27 | |
| 26 | #if 1 // older unices need these includes for select (2) |
28 | #if 1 // older unices need these includes for select (2) |
| 27 | # include <unistd.h> |
29 | # include <unistd.h> |
| 28 | # include <sys/types.h> |
30 | # include <sys/types.h> |
| 29 | #endif |
31 | #endif |
| 30 | |
32 | |
| 31 | // if the BSDs would at least be marginally POSIX-compatible.. *sigh* |
33 | // if the BSDs would at least be marginally POSIX-compatible.. *sigh* |
| 32 | // until that happens, sys/select.h must come last |
34 | // until that happens, sys/select.h must come last |
| 33 | #include <sys/select.h> |
35 | #include <sys/select.h> |
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36 | |
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37 | // for IOM_SIG |
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38 | #include <signal.h> |
| 34 | |
39 | |
| 35 | #include "iom.h" |
40 | #include "iom.h" |
| 36 | |
41 | |
| 37 | // TSTAMP_MAX must still fit into a positive struct timeval |
42 | // TSTAMP_MAX must still fit into a positive struct timeval |
| 38 | #define TSTAMP_MAX (double)(1UL<<31) |
43 | #define TSTAMP_MAX (double)(1UL<<31) |
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| 51 | abort (); |
56 | abort (); |
| 52 | } |
57 | } |
| 53 | |
58 | |
| 54 | tw0 () |
59 | tw0 () |
| 55 | : time_watcher (this, &tw0::cb) |
60 | : time_watcher (this, &tw0::cb) |
| 56 | { }} |
61 | { } |
| 57 | tw0; |
62 | } tw0; |
| 58 | |
63 | |
| 59 | tstamp NOW; |
64 | tstamp NOW; |
| 60 | static bool iom_valid; |
65 | static bool iom_valid; |
| 61 | io_manager iom; |
66 | io_manager iom; |
| 62 | |
67 | |
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| 122 | struct timeval tv; |
127 | struct timeval tv; |
| 123 | |
128 | |
| 124 | gettimeofday (&tv, 0); |
129 | gettimeofday (&tv, 0); |
| 125 | |
130 | |
| 126 | NOW = (tstamp)tv.tv_sec + (tstamp)tv.tv_usec / 1000000; |
131 | NOW = (tstamp)tv.tv_sec + (tstamp)tv.tv_usec / 1000000; |
| 127 | #endif |
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| 128 | } |
132 | } |
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133 | #endif |
| 129 | |
134 | |
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135 | #if IOM_SIG |
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136 | // race conditions galore |
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137 | |
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138 | void io_manager::sighandler (int signum) |
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139 | { |
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140 | assert (0 < signum && signum <= iom.sw.size ()); |
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141 | |
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142 | sig_vec &sv = *iom.sw [signum - 1]; |
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143 | |
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144 | for (int i = sv.size (); i--; ) |
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145 | if (!sv[i]) |
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146 | sv.erase_unordered (i); |
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147 | else |
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148 | sv[i]->call (*sv[i]); |
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149 | } |
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150 | |
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151 | void io_manager::reg (sig_watcher *w) |
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152 | { |
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153 | assert (0 < w->signum); |
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154 | |
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155 | sw.reserve (w->signum); |
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156 | |
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157 | sig_vec *&sv = sw [w->signum - 1]; |
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158 | |
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159 | if (!sv) |
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160 | { |
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161 | sv = new sig_vec; |
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162 | |
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163 | struct sigaction sa; |
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164 | sa.sa_handler = io_manager::sighandler; |
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165 | sigfillset (&sa.sa_mask); |
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166 | sa.sa_flags = 0; |
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167 | |
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168 | if (sigaction (w->signum, &sa, 0)) |
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169 | { |
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170 | perror ("Error while installing signal handler"); |
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171 | abort (); |
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172 | } |
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173 | } |
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174 | |
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175 | reg (w, *sv); |
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176 | } |
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177 | |
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178 | void io_manager::unreg (sig_watcher *w) |
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179 | { |
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180 | assert (0 < w->signum && w->signum <= sw.size ()); |
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181 | |
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182 | unreg (w, *sw [w->signum - 1]); |
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183 | } |
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184 | |
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185 | void sig_watcher::start (int signum) |
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186 | { |
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187 | stop (); |
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188 | this->signum = signum; |
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189 | iom.reg (this); |
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190 | } |
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191 | #endif |
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192 | |
| 130 | void io_manager::loop () |
193 | void io_manager::loop () |
| 131 | { |
194 | { |
| 132 | #if IOM_TIME |
195 | #if IOM_TIME |
| 133 | set_now (); |
196 | set_now (); |
| 134 | #endif |
197 | #endif |
