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19 | |
19 | |
20 | #include <cstdio> |
20 | #include <cstdio> |
21 | #include <cstdlib> |
21 | #include <cstdlib> |
22 | #include <cerrno> |
22 | #include <cerrno> |
23 | |
23 | |
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24 | #include <sys/time.h> |
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25 | |
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26 | #if 1 // older unices need these includes for select(2) |
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27 | # include <unistd.h> |
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28 | # include <sys/types.h> |
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29 | #endif |
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30 | |
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31 | // if the BSDs would at least be marginally POSIX-compatible.. *sigh* |
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32 | // until that happens, sys/select.h must come last |
24 | #include <sys/select.h> |
33 | #include <sys/select.h> |
25 | #include <sys/time.h> |
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26 | |
34 | |
27 | #include "iom.h" |
35 | #include "iom.h" |
28 | |
36 | |
29 | // TSTAMP_MAX must still fit into a positive struct timeval |
37 | // TSTAMP_MAX must still fit into a positive struct timeval |
30 | #define TSTAMP_MAX (double)(1UL<<31) |
38 | #define TSTAMP_MAX (double)(1UL<<31) |
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39 | |
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40 | // this is a dummy time watcher to ensure that the first |
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41 | // time watcher is _always_ valid, this gets rid of a lot |
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42 | // of null-pointer-checks |
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43 | // (must come _before_ iom is being defined) |
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44 | static struct tw0 : time_watcher { |
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45 | void cb (time_watcher &w) |
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46 | { |
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47 | // should never get called |
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48 | // reached end-of-time, or tstamp has a bogus definition, |
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49 | // or compiler initilization order broken, or somethine else :) |
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50 | abort (); |
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51 | } |
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52 | |
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53 | tw0() |
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54 | : time_watcher (this, &tw0::cb) |
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55 | { } |
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56 | } tw0; |
31 | |
57 | |
32 | tstamp NOW; |
58 | tstamp NOW; |
33 | static bool iom_valid; |
59 | static bool iom_valid; |
34 | io_manager iom; |
60 | io_manager iom; |
35 | |
61 | |
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39 | if (!iom_valid) |
65 | if (!iom_valid) |
40 | abort (); |
66 | abort (); |
41 | |
67 | |
42 | if (!w->active) |
68 | if (!w->active) |
43 | { |
69 | { |
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70 | #if IOM_CHECK |
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71 | queue.activity = true; |
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72 | #endif |
44 | queue.push_back (w); |
73 | queue.push_back (w); |
45 | w->active = queue.size (); |
74 | w->active = queue.size (); |
46 | } |
75 | } |
47 | } |
76 | } |
48 | |
77 | |
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150 | } |
179 | } |
151 | #endif |
180 | #endif |
152 | } |
181 | } |
153 | |
182 | |
154 | #if IOM_CHECK |
183 | #if IOM_CHECK |
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184 | tw.activity = false; |
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185 | |
155 | for (int i = cw.size (); i--; ) |
186 | for (int i = cw.size (); i--; ) |
156 | if (!cw[i]) |
187 | if (!cw[i]) |
157 | cw.erase_unordered (i); |
188 | cw.erase_unordered (i); |
158 | else |
189 | else |
159 | cw[i]->call (*cw[i]); |
190 | cw[i]->call (*cw[i]); |
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191 | |
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192 | if (tw.activity) |
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193 | { |
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194 | tval.tv_sec = 0; |
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195 | tval.tv_usec = 0; |
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196 | to = &tval; |
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197 | } |
160 | #endif |
198 | #endif |
161 | |
199 | |
162 | #if IOM_IO |
200 | #if IOM_IO |
163 | fd_set rfd, wfd, efd; |
201 | fd_set rfd, wfd, efd; |
164 | |
202 | |
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222 | break; |
260 | break; |
223 | #endif |
261 | #endif |
224 | } |
262 | } |
225 | } |
263 | } |
226 | |
264 | |
227 | // this is a dummy time watcher to ensure that the first |
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228 | // time watcher is _always_ valid, this gets rid of a lot |
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229 | // of null-pointer-checks |
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230 | static struct tw0 : time_watcher { |
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231 | void cb (time_watcher &w) |
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232 | { |
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233 | // should never get called |
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234 | // reached end-of-time, or tstamp has a bogus definition :) |
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235 | abort (); |
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236 | } |
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237 | |
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238 | tw0() |
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239 | : time_watcher (this, &tw0::cb) |
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240 | { } |
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241 | } tw0; |
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242 | |
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243 | io_manager::io_manager () |
265 | io_manager::io_manager () |
244 | { |
266 | { |
245 | iom_valid = true; |
267 | iom_valid = true; |
246 | |
268 | |
247 | #if IOM_TIME |
269 | #if IOM_TIME |