ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/libev/ev.c
(Generate patch)

Comparing libev/ev.c (file contents):
Revision 1.194 by root, Sat Dec 22 07:03:31 2007 UTC vs.
Revision 1.199 by root, Tue Dec 25 07:05:45 2007 UTC

2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007 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 *
10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer.
12 *
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
22 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
23 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
24 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
25 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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
22 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
23 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
25 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */ 38 */
31 39
32#ifdef __cplusplus 40#ifdef __cplusplus
33extern "C" { 41extern "C" {
34#endif 42#endif
280 288
281typedef ev_watcher *W; 289typedef ev_watcher *W;
282typedef ev_watcher_list *WL; 290typedef ev_watcher_list *WL;
283typedef ev_watcher_time *WT; 291typedef ev_watcher_time *WT;
284 292
293#if EV_USE_MONOTONIC
285/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 294/* sig_atomic_t is used to avoid per-thread variables or locking but still */
286/* giving it a reasonably high chance of working on typical architetcures */ 295/* giving it a reasonably high chance of working on typical architetcures */
287static sig_atomic_t have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 296static sig_atomic_t have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
297#endif
288 298
289#ifdef _WIN32 299#ifdef _WIN32
290# include "ev_win32.c" 300# include "ev_win32.c"
291#endif 301#endif
292 302
972} 982}
973 983
974unsigned int 984unsigned int
975ev_embeddable_backends (void) 985ev_embeddable_backends (void)
976{ 986{
987 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
988
977 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 989 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
978 return EVBACKEND_KQUEUE 990 /* please fix it and tell me how to detect the fix */
979 | EVBACKEND_PORT; 991 flags &= ~EVBACKEND_EPOLL;
992
993 return flags;
980} 994}
981 995
982unsigned int 996unsigned int
983ev_backend (EV_P) 997ev_backend (EV_P)
984{ 998{
2266 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 2280 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2267 2281
2268 if (ev_cb (w)) 2282 if (ev_cb (w))
2269 ev_feed_event (EV_A_ (W)w, EV_EMBED); 2283 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2270 else 2284 else
2271 ev_embed_sweep (loop, w); 2285 ev_loop (w->other, EVLOOP_NONBLOCK);
2272} 2286}
2273 2287
2274static void 2288static void
2275embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 2289embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2276{ 2290{
2277 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 2291 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2278 2292
2279 fd_reify (w->other); 2293 {
2294 struct ev_loop *loop = w->other;
2295
2296 while (fdchangecnt)
2297 {
2298 fd_reify (EV_A);
2299 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2300 }
2301 }
2280} 2302}
2303
2304#if 0
2305static void
2306embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2307{
2308 ev_idle_stop (EV_A_ idle);
2309}
2310#endif
2281 2311
2282void 2312void
2283ev_embed_start (EV_P_ ev_embed *w) 2313ev_embed_start (EV_P_ ev_embed *w)
2284{ 2314{
2285 if (expect_false (ev_is_active (w))) 2315 if (expect_false (ev_is_active (w)))
2296 2326
2297 ev_prepare_init (&w->prepare, embed_prepare_cb); 2327 ev_prepare_init (&w->prepare, embed_prepare_cb);
2298 ev_set_priority (&w->prepare, EV_MINPRI); 2328 ev_set_priority (&w->prepare, EV_MINPRI);
2299 ev_prepare_start (EV_A_ &w->prepare); 2329 ev_prepare_start (EV_A_ &w->prepare);
2300 2330
2331 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2332
2301 ev_start (EV_A_ (W)w, 1); 2333 ev_start (EV_A_ (W)w, 1);
2302} 2334}
2303 2335
2304void 2336void
2305ev_embed_stop (EV_P_ ev_embed *w) 2337ev_embed_stop (EV_P_ ev_embed *w)

Diff Legend

Removed lines
+ Added lines
< Changed lines
> Changed lines