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Comparing libev/ev.c (file contents):
Revision 1.358 by root, Sun Oct 24 14:44:40 2010 UTC vs.
Revision 1.367 by root, Tue Jan 11 02:15:58 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 *
… …
530 530
531static unsigned int noinline 531static unsigned int noinline
532ev_linux_version (void) 532ev_linux_version (void)
533{ 533{
534#ifdef __linux 534#ifdef __linux
535 unsigned int v = 0;
535 struct utsname buf; 536 struct utsname buf;
536 unsigned int v;
537 int i; 537 int i;
538 char *p = buf.release; 538 char *p = buf.release;
539 539
540 if (uname (&buf)) 540 if (uname (&buf))
541 return 0; 541 return 0;
… …
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;
… …
1371#endif 1369#endif
1372} 1370}
1373 1371
1374/*****************************************************************************/ 1372/*****************************************************************************/
1375 1373
1374void
1375ev_feed_signal (int signum)
1376{
1377#if EV_MULTIPLICITY
1378 EV_P = signals [signum - 1].loop;
1379
1380 if (!EV_A)
1381 return;
1382#endif
1383
1384 signals [signum - 1].pending = 1;
1385 evpipe_write (EV_A_ &sig_pending);
1386}
1387
1376static void 1388static void
1377ev_sighandler (int signum) 1389ev_sighandler (int signum)
1378{ 1390{
1379#if EV_MULTIPLICITY
1380 EV_P = signals [signum - 1].loop;
1381#endif
1382
1383#ifdef _WIN32 1391#ifdef _WIN32
1384 signal (signum, ev_sighandler); 1392 signal (signum, ev_sighandler);
1385#endif 1393#endif
1386 1394
1387 signals [signum - 1].pending = 1; 1395 ev_feed_signal (signum);
1388 evpipe_write (EV_A_ &sig_pending);
1389} 1396}
1390 1397
1391void noinline 1398void noinline
1392ev_feed_signal_event (EV_P_ int signum) 1399ev_feed_signal_event (EV_P_ int signum)
1393{ 1400{
… …
1645static void noinline 1652static void noinline
1646loop_init (EV_P_ unsigned int flags) 1653loop_init (EV_P_ unsigned int flags)
1647{ 1654{
1648 if (!backend) 1655 if (!backend)
1649 { 1656 {
1657 origflags = flags;
1658
1650#if EV_USE_REALTIME 1659#if EV_USE_REALTIME
1651 if (!have_realtime) 1660 if (!have_realtime)
1652 { 1661 {
1653 struct timespec ts; 1662 struct timespec ts;
1654 1663
… …
1699#endif 1708#endif
1700#if EV_USE_SIGNALFD 1709#if EV_USE_SIGNALFD
1701 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 1710 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1702#endif 1711#endif
1703 1712
1704 if (!(flags & 0x0000ffffU)) 1713 if (!(flags & EVBACKEND_MASK))
1705 flags |= ev_recommended_backends (); 1714 flags |= ev_recommended_backends ();
1706 1715
1707#if EV_USE_IOCP 1716#if EV_USE_IOCP
1708 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); 1717 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1709#endif 1718#endif
… …
1731#endif 1740#endif
1732 } 1741 }
1733} 1742}
1734 1743
1735/* free up a loop structure */ 1744/* free up a loop structure */
1736static void noinline 1745void
1737loop_destroy (EV_P) 1746ev_loop_destroy (EV_P)
1738{ 1747{
1739 int i; 1748 int i;
1749
1750#if EV_MULTIPLICITY
1751 /* mimic free (0) */
1752 if (!EV_A)
1753 return;
1754#endif
1755
1756#if EV_CLEANUP_ENABLE
1757 /* queue cleanup watchers (and execute them) */
1758 if (expect_false (cleanupcnt))
1759 {
1760 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1761 EV_INVOKE_PENDING;
1762 }
1763#endif
1764
1765#if EV_CHILD_ENABLE
1766 if (ev_is_active (&childev))
1767 {
1768 ev_ref (EV_A); /* child watcher */
1769 ev_signal_stop (EV_A_ &childev);
1770 }
1771#endif
1740 1772
1741 if (ev_is_active (&pipe_w)) 1773 if (ev_is_active (&pipe_w))
1742 { 1774 {
1743 /*ev_ref (EV_A);*/ 1775 /*ev_ref (EV_A);*/
1744 /*ev_io_stop (EV_A_ &pipe_w);*/ 1776 /*ev_io_stop (EV_A_ &pipe_w);*/
… …
1805 array_free (periodic, EMPTY); 1837 array_free (periodic, EMPTY);
1806#endif 1838#endif
1807#if EV_FORK_ENABLE 1839#if EV_FORK_ENABLE
1808 array_free (fork, EMPTY); 1840 array_free (fork, EMPTY);
1809#endif 1841#endif
1842#if EV_CLEANUP_ENABLE
1843 array_free (cleanup, EMPTY);
1844#endif
1810 array_free (prepare, EMPTY); 1845 array_free (prepare, EMPTY);
1811 array_free (check, EMPTY); 1846 array_free (check, EMPTY);
1812#if EV_ASYNC_ENABLE 1847#if EV_ASYNC_ENABLE
1813 array_free (async, EMPTY); 1848 array_free (async, EMPTY);
1814#endif 1849#endif
1815 1850
1816 backend = 0; 1851 backend = 0;
1852
1853#if EV_MULTIPLICITY
1854 if (ev_is_default_loop (EV_A))
1855#endif
1856 ev_default_loop_ptr = 0;
1857#if EV_MULTIPLICITY
1858 else
1859 ev_free (EV_A);
1860#endif
1817} 1861}
1818 1862
1819#if EV_USE_INOTIFY 1863#if EV_USE_INOTIFY
1820inline_size void infy_fork (EV_P); 1864inline_size void infy_fork (EV_P);
1821#endif 1865#endif
… …
1880 loop_init (EV_A_ flags); 1924 loop_init (EV_A_ flags);
1881 1925
1882 if (ev_backend (EV_A)) 1926 if (ev_backend (EV_A))
1883 return EV_A; 1927 return EV_A;
1884 1928
1929 ev_free (EV_A);
1885 return 0; 1930 return 0;
1886} 1931}
1887 1932
1888void
1889ev_loop_destroy (EV_P)
1890{
1891 loop_destroy (EV_A);
1892 ev_free (loop);
1893}
1894
1895void
1896ev_loop_fork (EV_P)
1897{
1898 postfork = 1; /* must be in line with ev_default_fork */
1899}
1900#endif /* multiplicity */ 1933#endif /* multiplicity */
1901 1934
1902#if EV_VERIFY 1935#if EV_VERIFY
1903static void noinline 1936static void noinline
1904verify_watcher (EV_P_ W w) 1937verify_watcher (EV_P_ W w)
… …
1979#if EV_FORK_ENABLE 2012#if EV_FORK_ENABLE
1980 assert (forkmax >= forkcnt); 2013 assert (forkmax >= forkcnt);
1981 array_verify (EV_A_ (W *)forks, forkcnt); 2014 array_verify (EV_A_ (W *)forks, forkcnt);
1982#endif 2015#endif
1983 2016
2017#if EV_CLEANUP_ENABLE
2018 assert (cleanupmax >= cleanupcnt);
2019 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2020#endif
2021
1984#if EV_ASYNC_ENABLE 2022#if EV_ASYNC_ENABLE
1985 assert (asyncmax >= asynccnt); 2023 assert (asyncmax >= asynccnt);
1986 array_verify (EV_A_ (W *)asyncs, asynccnt); 2024 array_verify (EV_A_ (W *)asyncs, asynccnt);
1987#endif 2025#endif
1988 2026
… …
2038 2076
2039 return ev_default_loop_ptr; 2077 return ev_default_loop_ptr;
2040} 2078}
2041 2079
2042void 2080void
2043ev_default_destroy (void) 2081ev_loop_fork (EV_P)
2044{ 2082{
2045#if EV_MULTIPLICITY
2046 EV_P = ev_default_loop_ptr;
2047#endif
2048
2049 ev_default_loop_ptr = 0;
2050
2051#if EV_CHILD_ENABLE
2052 ev_ref (EV_A); /* child watcher */
2053 ev_signal_stop (EV_A_ &childev);
2054#endif
2055
2056 loop_destroy (EV_A);
2057}
2058
2059void
2060ev_default_fork (void)
2061{
2062#if EV_MULTIPLICITY
2063 EV_P = ev_default_loop_ptr;
2064#endif
2065
2066 postfork = 1; /* must be in line with ev_loop_fork */ 2083 postfork = 1; /* must be in line with ev_default_fork */
2067} 2084}
2068 2085
2069/*****************************************************************************/ 2086/*****************************************************************************/
2070 2087
2071void 2088void
… …
2093 2110
2094 for (pri = NUMPRI; pri--; ) 2111 for (pri = NUMPRI; pri--; )
2095 while (pendingcnt [pri]) 2112 while (pendingcnt [pri])
2096 { 2113 {
2097 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2114 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
2098
2099 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2100 /* ^ this is no longer true, as pending_w could be here */
2101 2115
2102 p->w->pending = 0; 2116 p->w->pending = 0;
2103 EV_CB_INVOKE (p->w, p->events); 2117 EV_CB_INVOKE (p->w, p->events);
2104 EV_FREQUENT_CHECK; 2118 EV_FREQUENT_CHECK;
2105 } 2119 }
… …
2873 sa.sa_handler = ev_sighandler; 2887 sa.sa_handler = ev_sighandler;
2874 sigfillset (&sa.sa_mask); 2888 sigfillset (&sa.sa_mask);
2875 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2889 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2876 sigaction (w->signum, &sa, 0); 2890 sigaction (w->signum, &sa, 0);
2877 2891
2892 if (origflags & EVFLAG_NOSIGMASK)
2893 {
2878 sigemptyset (&sa.sa_mask); 2894 sigemptyset (&sa.sa_mask);
2879 sigaddset (&sa.sa_mask, w->signum); 2895 sigaddset (&sa.sa_mask, w->signum);
2880 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 2896 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2897 }
2881#endif 2898#endif
2882 } 2899 }
2883 2900
2884 EV_FREQUENT_CHECK; 2901 EV_FREQUENT_CHECK;
2885} 2902}
… …
3577 3594
3578 EV_FREQUENT_CHECK; 3595 EV_FREQUENT_CHECK;
3579} 3596}
3580#endif 3597#endif
3581 3598
3599#if EV_CLEANUP_ENABLE
3600void
3601ev_cleanup_start (EV_P_ ev_cleanup *w)
3602{
3603 if (expect_false (ev_is_active (w)))
3604 return;
3605
3606 EV_FREQUENT_CHECK;
3607
3608 ev_start (EV_A_ (W)w, ++cleanupcnt);
3609 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
3610 cleanups [cleanupcnt - 1] = w;
3611
3612 /* cleanup watchers should never keep a refcount on the loop */
3613 ev_unref (EV_A);
3614 EV_FREQUENT_CHECK;
3615}
3616
3617void
3618ev_cleanup_stop (EV_P_ ev_cleanup *w)
3619{
3620 clear_pending (EV_A_ (W)w);
3621 if (expect_false (!ev_is_active (w)))
3622 return;
3623
3624 EV_FREQUENT_CHECK;
3625 ev_ref (EV_A);
3626
3627 {
3628 int active = ev_active (w);
3629
3630 cleanups [active - 1] = cleanups [--cleanupcnt];
3631 ev_active (cleanups [active - 1]) = active;
3632 }
3633
3634 ev_stop (EV_A_ (W)w);
3635
3636 EV_FREQUENT_CHECK;
3637}
3638#endif
3639
3582#if EV_ASYNC_ENABLE 3640#if EV_ASYNC_ENABLE
3583void 3641void
3584ev_async_start (EV_P_ ev_async *w) 3642ev_async_start (EV_P_ ev_async *w)
3585{ 3643{
3586 if (expect_false (ev_is_active (w))) 3644 if (expect_false (ev_is_active (w)))

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