1 | /* |
1 | /* |
2 | * libevent compatibility layer |
2 | * libevent compatibility layer |
3 | * |
3 | * |
4 | * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de> |
4 | * Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de> |
5 | * All rights reserved. |
5 | * All rights reserved. |
6 | * |
6 | * |
7 | * Redistribution and use in source and binary forms, with or without |
7 | * Redistribution and use in source and binary forms, with or without modifica- |
8 | * modification, are permitted provided that the following conditions are |
8 | * tion, are permitted provided that the following conditions are met: |
9 | * met: |
9 | * |
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10 | * 1. Redistributions of source code must retain the above copyright notice, |
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11 | * this list of conditions and the following disclaimer. |
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12 | * |
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13 | * 2. Redistributions in binary form must reproduce the above copyright |
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14 | * notice, this list of conditions and the following disclaimer in the |
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15 | * documentation and/or other materials provided with the distribution. |
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16 | * |
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17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
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18 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- |
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19 | * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
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20 | * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- |
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21 | * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
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22 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
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23 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
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24 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- |
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25 | * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
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26 | * OF THE POSSIBILITY OF SUCH DAMAGE. |
10 | * |
27 | * |
11 | * * Redistributions of source code must retain the above copyright |
28 | * Alternatively, the contents of this file may be used under the terms of |
12 | * notice, this list of conditions and the following disclaimer. |
29 | * the GNU General Public License ("GPL") version 2 or any later version, |
13 | * |
30 | * in which case the provisions of the GPL are applicable instead of |
14 | * * Redistributions in binary form must reproduce the above |
31 | * the above. If you wish to allow the use of your version of this file |
15 | * copyright notice, this list of conditions and the following |
32 | * only under the terms of the GPL and not to allow others to use your |
16 | * disclaimer in the documentation and/or other materials provided |
33 | * version of this file under the BSD license, indicate your decision |
17 | * with the distribution. |
34 | * by deleting the provisions above and replace them with the notice |
18 | * |
35 | * and other provisions required by the GPL. If you do not delete the |
19 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
36 | * provisions above, a recipient may use your version of this file under |
20 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
37 | * either the BSD or the GPL. |
21 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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22 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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23 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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24 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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25 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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26 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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27 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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28 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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29 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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30 | */ |
38 | */ |
31 | |
39 | |
32 | #include <stddef.h> |
40 | #include <stddef.h> |
33 | #include <stdlib.h> |
41 | #include <stdlib.h> |
34 | #include <assert.h> |
42 | #include <assert.h> |
… | |
… | |
158 | static void |
166 | static void |
159 | x_cb_io (EV_P_ struct ev_io *w, int revents) |
167 | x_cb_io (EV_P_ struct ev_io *w, int revents) |
160 | { |
168 | { |
161 | struct event *ev = (struct event *)(((char *)w) - offsetof (struct event, iosig.io)); |
169 | struct event *ev = (struct event *)(((char *)w) - offsetof (struct event, iosig.io)); |
162 | |
170 | |
163 | if (revents & EV_ERROR) |
171 | if ((revents & EV_ERROR) || !(ev->ev_events & EV_PERSIST)) |
164 | event_del (ev); |
172 | event_del (ev); |
165 | else if (!(ev->ev_events & EV_PERSIST) && ev_is_active (w)) |
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166 | { |
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167 | ev_io_stop (EV_A_ w); |
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168 | ev->ev_flags &= ~EVLIST_INSERTED; |
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169 | } |
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170 | |
173 | |
171 | x_cb (ev, revents); |
174 | x_cb (ev, revents); |
172 | } |
175 | } |
173 | |
176 | |
174 | static void |
177 | static void |
… | |
… | |
207 | |
210 | |
208 | int event_add (struct event *ev, struct timeval *tv) |
211 | int event_add (struct event *ev, struct timeval *tv) |
209 | { |
212 | { |
210 | dLOOPev; |
213 | dLOOPev; |
211 | |
214 | |
212 | /* disable all watchers */ |
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213 | event_del (ev); |
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214 | |
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215 | if (ev->ev_events & EV_SIGNAL) |
215 | if (ev->ev_events & EV_SIGNAL) |
216 | { |
216 | { |
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217 | if (!ev_is_active (&ev->iosig.sig)) |
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218 | { |
217 | ev_signal_set (&ev->iosig.sig, ev->ev_fd); |
219 | ev_signal_set (&ev->iosig.sig, ev->ev_fd); |
218 | ev_signal_start (EV_A_ &ev->iosig.sig); |
220 | ev_signal_start (EV_A_ &ev->iosig.sig); |
219 | |
221 | |
220 | ev->ev_flags |= EVLIST_SIGNAL; |
222 | ev->ev_flags |= EVLIST_SIGNAL; |
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223 | } |
221 | } |
224 | } |
222 | else if (ev->ev_events & (EV_READ | EV_WRITE)) |
225 | else if (ev->ev_events & (EV_READ | EV_WRITE)) |
223 | { |
226 | { |
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227 | if (!ev_is_active (&ev->iosig.io)) |
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228 | { |
224 | ev_io_set (&ev->iosig.io, ev->ev_fd, ev->ev_events & (EV_READ | EV_WRITE)); |
229 | ev_io_set (&ev->iosig.io, ev->ev_fd, ev->ev_events & (EV_READ | EV_WRITE)); |
225 | ev_io_start (EV_A_ &ev->iosig.io); |
230 | ev_io_start (EV_A_ &ev->iosig.io); |
226 | |
231 | |
227 | ev->ev_flags |= EVLIST_INSERTED; |
232 | ev->ev_flags |= EVLIST_INSERTED; |
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233 | } |
228 | } |
234 | } |
229 | |
235 | |
230 | if (tv) |
236 | if (tv) |
231 | { |
237 | { |
232 | ev_timer_set (&ev->to, tv_get (tv), 0.); |
238 | ev->to.repeat = tv_get (tv); |
233 | ev_timer_start (EV_A_ &ev->to); |
239 | ev_timer_again (EV_A_ &ev->to); |
234 | |
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235 | ev->ev_flags |= EVLIST_TIMEOUT; |
240 | ev->ev_flags |= EVLIST_TIMEOUT; |
236 | } |
241 | } |
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242 | else |
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243 | { |
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244 | ev_timer_stop (EV_A_ &ev->to); |
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245 | ev->ev_flags &= ~EVLIST_TIMEOUT; |
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246 | } |
237 | |
247 | |
238 | ev->ev_flags |= EVLIST_ACTIVE; |
248 | ev->ev_flags |= EVLIST_ACTIVE; |
239 | |
249 | |
240 | return 0; |
250 | return 0; |
241 | } |
251 | } |
… | |
… | |
243 | int event_del (struct event *ev) |
253 | int event_del (struct event *ev) |
244 | { |
254 | { |
245 | dLOOPev; |
255 | dLOOPev; |
246 | |
256 | |
247 | if (ev->ev_events & EV_SIGNAL) |
257 | if (ev->ev_events & EV_SIGNAL) |
248 | { |
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249 | /* sig */ |
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250 | if (ev_is_active (&ev->iosig.sig)) |
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251 | ev_signal_stop (EV_A_ &ev->iosig.sig); |
258 | ev_signal_stop (EV_A_ &ev->iosig.sig); |
252 | } |
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253 | else if (ev->ev_events & (EV_READ | EV_WRITE)) |
259 | else if (ev->ev_events & (EV_READ | EV_WRITE)) |
254 | { |
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255 | /* io */ |
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256 | if (ev_is_active (&ev->iosig.io)) |
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257 | ev_io_stop (EV_A_ &ev->iosig.io); |
260 | ev_io_stop (EV_A_ &ev->iosig.io); |
258 | } |
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259 | |
261 | |
260 | if (ev_is_active (&ev->to)) |
262 | if (ev_is_active (&ev->to)) |
261 | ev_timer_stop (EV_A_ &ev->to); |
263 | ev_timer_stop (EV_A_ &ev->to); |
262 | |
264 | |
263 | ev->ev_flags = EVLIST_INIT; |
265 | ev->ev_flags = EVLIST_INIT; |
… | |
… | |
281 | |
283 | |
282 | int event_pending (struct event *ev, short events, struct timeval *tv) |
284 | int event_pending (struct event *ev, short events, struct timeval *tv) |
283 | { |
285 | { |
284 | short revents = 0; |
286 | short revents = 0; |
285 | dLOOPev; |
287 | dLOOPev; |
286 | |
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287 | |
288 | |
288 | if (ev->ev_events & EV_SIGNAL) |
289 | if (ev->ev_events & EV_SIGNAL) |
289 | { |
290 | { |
290 | /* sig */ |
291 | /* sig */ |
291 | if (ev_is_active (&ev->iosig.sig) || ev_is_pending (&ev->iosig.sig)) |
292 | if (ev_is_active (&ev->iosig.sig) || ev_is_pending (&ev->iosig.sig)) |
… | |
… | |
345 | static void |
346 | static void |
346 | x_loopexit_cb (int revents, void *base) |
347 | x_loopexit_cb (int revents, void *base) |
347 | { |
348 | { |
348 | dLOOPbase; |
349 | dLOOPbase; |
349 | |
350 | |
350 | ev_unloop (EV_A_ EVUNLOOP_ONCE); |
351 | ev_unloop (EV_A_ EVUNLOOP_ONE); |
351 | } |
352 | } |
352 | |
353 | |
353 | int event_base_loopexit (struct event_base *base, struct timeval *tv) |
354 | int event_base_loopexit (struct event_base *base, struct timeval *tv) |
354 | { |
355 | { |
355 | ev_tstamp after = tv_get (tv); |
356 | ev_tstamp after = tv_get (tv); |
356 | dLOOPbase; |
357 | dLOOPbase; |
357 | |
358 | |
358 | ev_once (EV_A_ -1, 0, after >= 0. ? after : 0., x_loopexit_cb, (void *)base); |
359 | ev_once (EV_A_ -1, 0, after >= 0. ? after : 0., x_loopexit_cb, (void *)base); |
359 | |
360 | |
360 | return -1; |
361 | return 0; |
361 | } |
362 | } |
362 | |
363 | |
363 | struct x_once |
364 | struct x_once |
364 | { |
365 | { |
365 | int fd; |
366 | int fd; |