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Comparing libev/ev.c (file contents):
Revision 1.359 by root, Sun Oct 24 17:58:41 2010 UTC vs.
Revision 1.369 by root, Sun Jan 23 18:53:06 2011 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011 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 modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
591 if (syserr_cb) 591 if (syserr_cb)
592 syserr_cb (msg); 592 syserr_cb (msg);
593 else 593 else
594 { 594 {
595#if EV_AVOID_STDIO 595#if EV_AVOID_STDIO
596 const char *err = strerror (errno);
597
598 ev_printerr (msg); 596 ev_printerr (msg);
599 ev_printerr (": "); 597 ev_printerr (": ");
600 ev_printerr (err); 598 ev_printerr (strerror (errno));
601 ev_printerr ("\n"); 599 ev_printerr ("\n");
602#else 600#else
603 perror (msg); 601 perror (msg);
604#endif 602#endif
605 abort (); 603 abort ();
… …
639 ptr = alloc (ptr, size); 637 ptr = alloc (ptr, size);
640 638
641 if (!ptr && size) 639 if (!ptr && size)
642 { 640 {
643#if EV_AVOID_STDIO 641#if EV_AVOID_STDIO
644 ev_printerr ("libev: memory allocation failed, aborting.\n"); 642 ev_printerr ("(libev) memory allocation failed, aborting.\n");
645#else 643#else
646 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 644 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
647#endif 645#endif
648 abort (); 646 abort ();
649 } 647 }
650 648
651 return ptr; 649 return ptr;
… …
815 /* by older ones */ 813 /* by older ones */
816 EV_TV_SET (tv, delay); 814 EV_TV_SET (tv, delay);
817 select (0, 0, 0, 0, &tv); 815 select (0, 0, 0, 0, &tv);
818#endif 816#endif
819 } 817 }
818}
819
820inline_speed int
821ev_timeout_to_ms (ev_tstamp timeout)
822{
823 int ms = timeout * 1000. + .999999;
824
825 return expect_true (ms) ? ms : timeout < 1e-6 ? 0 : 1;
820} 826}
821 827
822/*****************************************************************************/ 828/*****************************************************************************/
823 829
824#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 830#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
… …
1345 char dummy; 1351 char dummy;
1346 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 1352 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1347 read (evpipe [0], &dummy, 1); 1353 read (evpipe [0], &dummy, 1);
1348 } 1354 }
1349 1355
1356#if EV_SIGNAL_ENABLE
1350 if (sig_pending) 1357 if (sig_pending)
1351 { 1358 {
1352 sig_pending = 0; 1359 sig_pending = 0;
1353 1360
1354 for (i = EV_NSIG - 1; i--; ) 1361 for (i = EV_NSIG - 1; i--; )
1355 if (expect_false (signals [i].pending)) 1362 if (expect_false (signals [i].pending))
1356 ev_feed_signal_event (EV_A_ i + 1); 1363 ev_feed_signal_event (EV_A_ i + 1);
1357 } 1364 }
1365#endif
1358 1366
1359#if EV_ASYNC_ENABLE 1367#if EV_ASYNC_ENABLE
1360 if (async_pending) 1368 if (async_pending)
1361 { 1369 {
1362 async_pending = 0; 1370 async_pending = 0;
… …
1371#endif 1379#endif
1372} 1380}
1373 1381
1374/*****************************************************************************/ 1382/*****************************************************************************/
1375 1383
1384void
1385ev_feed_signal (int signum)
1386{
1387#if EV_MULTIPLICITY
1388 EV_P = signals [signum - 1].loop;
1389
1390 if (!EV_A)
1391 return;
1392#endif
1393
1394 signals [signum - 1].pending = 1;
1395 evpipe_write (EV_A_ &sig_pending);
1396}
1397
1376static void 1398static void
1377ev_sighandler (int signum) 1399ev_sighandler (int signum)
1378{ 1400{
1379#if EV_MULTIPLICITY
1380 EV_P = signals [signum - 1].loop;
1381#endif
1382
1383#ifdef _WIN32 1401#ifdef _WIN32
1384 signal (signum, ev_sighandler); 1402 signal (signum, ev_sighandler);
1385#endif 1403#endif
1386 1404
1387 signals [signum - 1].pending = 1; 1405 ev_feed_signal (signum);
1388 evpipe_write (EV_A_ &sig_pending);
1389} 1406}
1390 1407
1391void noinline 1408void noinline
1392ev_feed_signal_event (EV_P_ int signum) 1409ev_feed_signal_event (EV_P_ int signum)
1393{ 1410{
… …
1645static void noinline 1662static void noinline
1646loop_init (EV_P_ unsigned int flags) 1663loop_init (EV_P_ unsigned int flags)
1647{ 1664{
1648 if (!backend) 1665 if (!backend)
1649 { 1666 {
1667 origflags = flags;
1668
1650#if EV_USE_REALTIME 1669#if EV_USE_REALTIME
1651 if (!have_realtime) 1670 if (!have_realtime)
1652 { 1671 {
1653 struct timespec ts; 1672 struct timespec ts;
1654 1673
… …
1699#endif 1718#endif
1700#if EV_USE_SIGNALFD 1719#if EV_USE_SIGNALFD
1701 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 1720 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1702#endif 1721#endif
1703 1722
1704 if (!(flags & 0x0000ffffU)) 1723 if (!(flags & EVBACKEND_MASK))
1705 flags |= ev_recommended_backends (); 1724 flags |= ev_recommended_backends ();
1706 1725
1707#if EV_USE_IOCP 1726#if EV_USE_IOCP
1708 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 1727 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1709#endif 1728#endif
… …
1735/* free up a loop structure */ 1754/* free up a loop structure */
1736void 1755void
1737ev_loop_destroy (EV_P) 1756ev_loop_destroy (EV_P)
1738{ 1757{
1739 int i; 1758 int i;
1759
1760#if EV_MULTIPLICITY
1761 /* mimic free (0) */
1762 if (!EV_A)
1763 return;
1764#endif
1765
1766#if EV_CLEANUP_ENABLE
1767 /* queue cleanup watchers (and execute them) */
1768 if (expect_false (cleanupcnt))
1769 {
1770 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1771 EV_INVOKE_PENDING;
1772 }
1773#endif
1740 1774
1741#if EV_CHILD_ENABLE 1775#if EV_CHILD_ENABLE
1742 if (ev_is_active (&childev)) 1776 if (ev_is_active (&childev))
1743 { 1777 {
1744 ev_ref (EV_A); /* child watcher */ 1778 ev_ref (EV_A); /* child watcher */
… …
1812#if EV_PERIODIC_ENABLE 1846#if EV_PERIODIC_ENABLE
1813 array_free (periodic, EMPTY); 1847 array_free (periodic, EMPTY);
1814#endif 1848#endif
1815#if EV_FORK_ENABLE 1849#if EV_FORK_ENABLE
1816 array_free (fork, EMPTY); 1850 array_free (fork, EMPTY);
1851#endif
1852#if EV_CLEANUP_ENABLE
1853 array_free (cleanup, EMPTY);
1817#endif 1854#endif
1818 array_free (prepare, EMPTY); 1855 array_free (prepare, EMPTY);
1819 array_free (check, EMPTY); 1856 array_free (check, EMPTY);
1820#if EV_ASYNC_ENABLE 1857#if EV_ASYNC_ENABLE
1821 array_free (async, EMPTY); 1858 array_free (async, EMPTY);
… …
1985#if EV_FORK_ENABLE 2022#if EV_FORK_ENABLE
1986 assert (forkmax >= forkcnt); 2023 assert (forkmax >= forkcnt);
1987 array_verify (EV_A_ (W *)forks, forkcnt); 2024 array_verify (EV_A_ (W *)forks, forkcnt);
1988#endif 2025#endif
1989 2026
2027#if EV_CLEANUP_ENABLE
2028 assert (cleanupmax >= cleanupcnt);
2029 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2030#endif
2031
1990#if EV_ASYNC_ENABLE 2032#if EV_ASYNC_ENABLE
1991 assert (asyncmax >= asynccnt); 2033 assert (asyncmax >= asynccnt);
1992 array_verify (EV_A_ (W *)asyncs, asynccnt); 2034 array_verify (EV_A_ (W *)asyncs, asynccnt);
1993#endif 2035#endif
1994 2036
… …
2078 2120
2079 for (pri = NUMPRI; pri--; ) 2121 for (pri = NUMPRI; pri--; )
2080 while (pendingcnt [pri]) 2122 while (pendingcnt [pri])
2081 { 2123 {
2082 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2124 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
2083
2084 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2085 /* ^ this is no longer true, as pending_w could be here */
2086 2125
2087 p->w->pending = 0; 2126 p->w->pending = 0;
2088 EV_CB_INVOKE (p->w, p->events); 2127 EV_CB_INVOKE (p->w, p->events);
2089 EV_FREQUENT_CHECK; 2128 EV_FREQUENT_CHECK;
2090 } 2129 }
… …
2858 sa.sa_handler = ev_sighandler; 2897 sa.sa_handler = ev_sighandler;
2859 sigfillset (&sa.sa_mask); 2898 sigfillset (&sa.sa_mask);
2860 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2899 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2861 sigaction (w->signum, &sa, 0); 2900 sigaction (w->signum, &sa, 0);
2862 2901
2902 if (origflags & EVFLAG_NOSIGMASK)
2903 {
2863 sigemptyset (&sa.sa_mask); 2904 sigemptyset (&sa.sa_mask);
2864 sigaddset (&sa.sa_mask, w->signum); 2905 sigaddset (&sa.sa_mask, w->signum);
2865 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 2906 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2907 }
2866#endif 2908#endif
2867 } 2909 }
2868 2910
2869 EV_FREQUENT_CHECK; 2911 EV_FREQUENT_CHECK;
2870} 2912}
… …
3562 3604
3563 EV_FREQUENT_CHECK; 3605 EV_FREQUENT_CHECK;
3564} 3606}
3565#endif 3607#endif
3566 3608
3609#if EV_CLEANUP_ENABLE
3610void
3611ev_cleanup_start (EV_P_ ev_cleanup *w)
3612{
3613 if (expect_false (ev_is_active (w)))
3614 return;
3615
3616 EV_FREQUENT_CHECK;
3617
3618 ev_start (EV_A_ (W)w, ++cleanupcnt);
3619 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
3620 cleanups [cleanupcnt - 1] = w;
3621
3622 /* cleanup watchers should never keep a refcount on the loop */
3623 ev_unref (EV_A);
3624 EV_FREQUENT_CHECK;
3625}
3626
3627void
3628ev_cleanup_stop (EV_P_ ev_cleanup *w)
3629{
3630 clear_pending (EV_A_ (W)w);
3631 if (expect_false (!ev_is_active (w)))
3632 return;
3633
3634 EV_FREQUENT_CHECK;
3635 ev_ref (EV_A);
3636
3637 {
3638 int active = ev_active (w);
3639
3640 cleanups [active - 1] = cleanups [--cleanupcnt];
3641 ev_active (cleanups [active - 1]) = active;
3642 }
3643
3644 ev_stop (EV_A_ (W)w);
3645
3646 EV_FREQUENT_CHECK;
3647}
3648#endif
3649
3567#if EV_ASYNC_ENABLE 3650#if EV_ASYNC_ENABLE
3568void 3651void
3569ev_async_start (EV_P_ ev_async *w) 3652ev_async_start (EV_P_ ev_async *w)
3570{ 3653{
3571 if (expect_false (ev_is_active (w))) 3654 if (expect_false (ev_is_active (w)))

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