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Comparing libev/ev.c (file contents):
Revision 1.131 by root, Fri Nov 23 05:43:45 2007 UTC vs.
Revision 1.135 by root, Sat Nov 24 06:23:27 2007 UTC

… …
32#ifdef __cplusplus 32#ifdef __cplusplus
33extern "C" { 33extern "C" {
34#endif 34#endif
35 35
36#ifndef EV_STANDALONE 36#ifndef EV_STANDALONE
37# ifdef EV_CONFIG_H
38# include EV_CONFIG_H
39# else
37# include "config.h" 40# include "config.h"
41# endif
38 42
39# if HAVE_CLOCK_GETTIME 43# if HAVE_CLOCK_GETTIME
40# ifndef EV_USE_MONOTONIC 44# ifndef EV_USE_MONOTONIC
41# define EV_USE_MONOTONIC 1 45# define EV_USE_MONOTONIC 1
42# endif 46# endif
… …
393 { 397 {
394 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents; 398 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
395 return; 399 return;
396 } 400 }
397 401
402 if (expect_false (!w_->cb))
403 return;
404
398 w_->pending = ++pendingcnt [ABSPRI (w_)]; 405 w_->pending = ++pendingcnt [ABSPRI (w_)];
399 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2); 406 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
400 pendings [ABSPRI (w_)][w_->pending - 1].w = w_; 407 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
401 pendings [ABSPRI (w_)][w_->pending - 1].events = revents; 408 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
402} 409}
… …
727 int pid, status; 734 int pid, status;
728 735
729 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 736 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
730 { 737 {
731 /* make sure we are called again until all childs have been reaped */ 738 /* make sure we are called again until all childs have been reaped */
739 /* we need to do it this way so that the callback gets called before we continue */
732 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 740 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
733 741
734 child_reap (EV_A_ sw, pid, pid, status); 742 child_reap (EV_A_ sw, pid, pid, status);
735 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ 743 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
736 } 744 }
737} 745}
738 746
739#endif 747#endif
740 748
… …
808 // flags &= ~EVBACKEND_KQUEUE; for documentation 816 // flags &= ~EVBACKEND_KQUEUE; for documentation
809 flags &= ~EVBACKEND_POLL; 817 flags &= ~EVBACKEND_POLL;
810#endif 818#endif
811 819
812 return flags; 820 return flags;
821}
822
823unsigned int
824ev_embeddable_backends (void)
825{
826 return EVBACKEND_EPOLL
827 | EVBACKEND_KQUEUE
828 | EVBACKEND_PORT;
813} 829}
814 830
815unsigned int 831unsigned int
816ev_backend (EV_P) 832ev_backend (EV_P)
817{ 833{
… …
1232static int loop_done; 1248static int loop_done;
1233 1249
1234void 1250void
1235ev_loop (EV_P_ int flags) 1251ev_loop (EV_P_ int flags)
1236{ 1252{
1237 double block;
1238 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1253 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1254 ? EVUNLOOP_ONE
1255 : EVUNLOOP_CANCEL;
1239 1256
1240 while (activecnt) 1257 while (activecnt)
1241 { 1258 {
1242 /* queue check watchers (and execute them) */ 1259 /* queue check watchers (and execute them) */
1243 if (expect_false (preparecnt)) 1260 if (expect_false (preparecnt))
… …
1252 1269
1253 /* update fd-related kernel structures */ 1270 /* update fd-related kernel structures */
1254 fd_reify (EV_A); 1271 fd_reify (EV_A);
1255 1272
1256 /* calculate blocking time */ 1273 /* calculate blocking time */
1274 {
1275 double block;
1257 1276
1258 /* we only need this for !monotonic clock or timers, but as we basically 1277 if (flags & EVLOOP_NONBLOCK || idlecnt)
1259 always have timers, we just calculate it always */ 1278 block = 0.; /* do not block at all */
1279 else
1280 {
1281 /* update time to cancel out callback processing overhead */
1260#if EV_USE_MONOTONIC 1282#if EV_USE_MONOTONIC
1261 if (expect_true (have_monotonic)) 1283 if (expect_true (have_monotonic))
1262 time_update_monotonic (EV_A); 1284 time_update_monotonic (EV_A);
1263 else 1285 else
1264#endif 1286#endif
1265 { 1287 {
1266 ev_rt_now = ev_time (); 1288 ev_rt_now = ev_time ();
1267 mn_now = ev_rt_now; 1289 mn_now = ev_rt_now;
1268 } 1290 }
1269 1291
1270 if (flags & EVLOOP_NONBLOCK || idlecnt)
1271 block = 0.;
1272 else
1273 {
1274 block = MAX_BLOCKTIME; 1292 block = MAX_BLOCKTIME;
1275 1293
1276 if (timercnt) 1294 if (timercnt)
1277 { 1295 {
1278 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; 1296 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1279 if (block > to) block = to; 1297 if (block > to) block = to;
1280 } 1298 }
1281 1299
1282#if EV_PERIODICS 1300#if EV_PERIODICS
1283 if (periodiccnt) 1301 if (periodiccnt)
1284 { 1302 {
1285 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; 1303 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1286 if (block > to) block = to; 1304 if (block > to) block = to;
1287 } 1305 }
1288#endif 1306#endif
1289 1307
1290 if (expect_false (block < 0.)) block = 0.; 1308 if (expect_false (block < 0.)) block = 0.;
1291 } 1309 }
1292 1310
1293 backend_poll (EV_A_ block); 1311 backend_poll (EV_A_ block);
1312 }
1294 1313
1295 /* update ev_rt_now, do magic */ 1314 /* update ev_rt_now, do magic */
1296 time_update (EV_A); 1315 time_update (EV_A);
1297 1316
1298 /* queue pending timers and reschedule them */ 1317 /* queue pending timers and reschedule them */
… …
1313 1332
1314 if (expect_false (loop_done)) 1333 if (expect_false (loop_done))
1315 break; 1334 break;
1316 } 1335 }
1317 1336
1318 if (loop_done != 2) 1337 if (loop_done == EVUNLOOP_ONE)
1319 loop_done = 0; 1338 loop_done = EVUNLOOP_CANCEL;
1320} 1339}
1321 1340
1322void 1341void
1323ev_unloop (EV_P_ int how) 1342ev_unloop (EV_P_ int how)
1324{ 1343{
… …
1654 1673
1655 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1674 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1656 ev_stop (EV_A_ (W)w); 1675 ev_stop (EV_A_ (W)w);
1657} 1676}
1658 1677
1678#if EV_MULTIPLICITY
1679static void
1680embed_cb (EV_P_ struct ev_io *io, int revents)
1681{
1682 struct ev_embed *w = (struct ev_embed *)(((char *)io) - offsetof (struct ev_embed, io));
1683
1684 ev_feed_event (EV_A_ (W)w, EV_EMBED);
1685 ev_loop (w->loop, EVLOOP_NONBLOCK);
1686}
1687
1688void
1689ev_embed_start (EV_P_ struct ev_embed *w)
1690{
1691 if (expect_false (ev_is_active (w)))
1692 return;
1693
1694 {
1695 struct ev_loop *loop = w->loop;
1696 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
1697 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
1698 }
1699
1700 ev_io_start (EV_A_ &w->io);
1701 ev_start (EV_A_ (W)w, 1);
1702}
1703
1704void
1705ev_embed_stop (EV_P_ struct ev_embed *w)
1706{
1707 ev_clear_pending (EV_A_ (W)w);
1708 if (expect_false (!ev_is_active (w)))
1709 return;
1710
1711 ev_io_stop (EV_A_ &w->io);
1712 ev_stop (EV_A_ (W)w);
1713}
1714#endif
1715
1659/*****************************************************************************/ 1716/*****************************************************************************/
1660 1717
1661struct ev_once 1718struct ev_once
1662{ 1719{
1663 struct ev_io io; 1720 struct ev_io io;

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