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Comparing libev/ev.c (file contents):
Revision 1.356 by root, Fri Oct 22 11:21:52 2010 UTC vs.
Revision 1.368 by root, Mon Jan 17 12:11:11 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;
… …
668 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 666 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
669 unsigned char unused; 667 unsigned char unused;
670#if EV_USE_EPOLL 668#if EV_USE_EPOLL
671 unsigned int egen; /* generation counter to counter epoll bugs */ 669 unsigned int egen; /* generation counter to counter epoll bugs */
672#endif 670#endif
673#if EV_SELECT_IS_WINSOCKET 671#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
674 SOCKET handle; 672 SOCKET handle;
673#endif
674#if EV_USE_IOCP
675 OVERLAPPED or, ow;
675#endif 676#endif
676} ANFD; 677} ANFD;
677 678
678/* stores the pending event set for a given watcher */ 679/* stores the pending event set for a given watcher */
679typedef struct 680typedef struct
… …
814 select (0, 0, 0, 0, &tv); 815 select (0, 0, 0, 0, &tv);
815#endif 816#endif
816 } 817 }
817} 818}
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;
826}
827
819/*****************************************************************************/ 828/*****************************************************************************/
820 829
821#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 */
822 831
823/* find a suitable new size for the given array, */ 832/* find a suitable new size for the given array, */
… …
975 unsigned char o_events = anfd->events; 984 unsigned char o_events = anfd->events;
976 unsigned char o_reify = anfd->reify; 985 unsigned char o_reify = anfd->reify;
977 986
978 anfd->reify = 0; 987 anfd->reify = 0;
979 988
980#if EV_SELECT_IS_WINSOCKET 989#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
981 if (o_reify & EV__IOFDSET) 990 if (o_reify & EV__IOFDSET)
982 { 991 {
983 unsigned long arg; 992 unsigned long arg;
984 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 993 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
985 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 994 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
995 printf ("oi %d %x\n", fd, anfd->handle);//D
986 } 996 }
987#endif 997#endif
988 998
989 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 999 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
990 { 1000 {
… …
1367#endif 1377#endif
1368} 1378}
1369 1379
1370/*****************************************************************************/ 1380/*****************************************************************************/
1371 1381
1382void
1383ev_feed_signal (int signum)
1384{
1385#if EV_MULTIPLICITY
1386 EV_P = signals [signum - 1].loop;
1387
1388 if (!EV_A)
1389 return;
1390#endif
1391
1392 signals [signum - 1].pending = 1;
1393 evpipe_write (EV_A_ &sig_pending);
1394}
1395
1372static void 1396static void
1373ev_sighandler (int signum) 1397ev_sighandler (int signum)
1374{ 1398{
1375#if EV_MULTIPLICITY
1376 EV_P = signals [signum - 1].loop;
1377#endif
1378
1379#ifdef _WIN32 1399#ifdef _WIN32
1380 signal (signum, ev_sighandler); 1400 signal (signum, ev_sighandler);
1381#endif 1401#endif
1382 1402
1383 signals [signum - 1].pending = 1; 1403 ev_feed_signal (signum);
1384 evpipe_write (EV_A_ &sig_pending);
1385} 1404}
1386 1405
1387void noinline 1406void noinline
1388ev_feed_signal_event (EV_P_ int signum) 1407ev_feed_signal_event (EV_P_ int signum)
1389{ 1408{
… …
1489 1508
1490#endif 1509#endif
1491 1510
1492/*****************************************************************************/ 1511/*****************************************************************************/
1493 1512
1513#if EV_USE_IOCP
1514# include "ev_iocp.c"
1515#endif
1494#if EV_USE_PORT 1516#if EV_USE_PORT
1495# include "ev_port.c" 1517# include "ev_port.c"
1496#endif 1518#endif
1497#if EV_USE_KQUEUE 1519#if EV_USE_KQUEUE
1498# include "ev_kqueue.c" 1520# include "ev_kqueue.c"
… …
1638static void noinline 1660static void noinline
1639loop_init (EV_P_ unsigned int flags) 1661loop_init (EV_P_ unsigned int flags)
1640{ 1662{
1641 if (!backend) 1663 if (!backend)
1642 { 1664 {
1665 origflags = flags;
1666
1643#if EV_USE_REALTIME 1667#if EV_USE_REALTIME
1644 if (!have_realtime) 1668 if (!have_realtime)
1645 { 1669 {
1646 struct timespec ts; 1670 struct timespec ts;
1647 1671
… …
1692#endif 1716#endif
1693#if EV_USE_SIGNALFD 1717#if EV_USE_SIGNALFD
1694 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 1718 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1695#endif 1719#endif
1696 1720
1697 if (!(flags & 0x0000ffffU)) 1721 if (!(flags & EVBACKEND_MASK))
1698 flags |= ev_recommended_backends (); 1722 flags |= ev_recommended_backends ();
1699 1723
1724#if EV_USE_IOCP
1725 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1726#endif
1700#if EV_USE_PORT 1727#if EV_USE_PORT
1701 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1728 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1702#endif 1729#endif
1703#if EV_USE_KQUEUE 1730#if EV_USE_KQUEUE
1704 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1731 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1721#endif 1748#endif
1722 } 1749 }
1723} 1750}
1724 1751
1725/* free up a loop structure */ 1752/* free up a loop structure */
1726static void noinline 1753void
1727loop_destroy (EV_P) 1754ev_loop_destroy (EV_P)
1728{ 1755{
1729 int i; 1756 int i;
1757
1758#if EV_MULTIPLICITY
1759 /* mimic free (0) */
1760 if (!EV_A)
1761 return;
1762#endif
1763
1764#if EV_CLEANUP_ENABLE
1765 /* queue cleanup watchers (and execute them) */
1766 if (expect_false (cleanupcnt))
1767 {
1768 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1769 EV_INVOKE_PENDING;
1770 }
1771#endif
1772
1773#if EV_CHILD_ENABLE
1774 if (ev_is_active (&childev))
1775 {
1776 ev_ref (EV_A); /* child watcher */
1777 ev_signal_stop (EV_A_ &childev);
1778 }
1779#endif
1730 1780
1731 if (ev_is_active (&pipe_w)) 1781 if (ev_is_active (&pipe_w))
1732 { 1782 {
1733 /*ev_ref (EV_A);*/ 1783 /*ev_ref (EV_A);*/
1734 /*ev_io_stop (EV_A_ &pipe_w);*/ 1784 /*ev_io_stop (EV_A_ &pipe_w);*/
… …
1756#endif 1806#endif
1757 1807
1758 if (backend_fd >= 0) 1808 if (backend_fd >= 0)
1759 close (backend_fd); 1809 close (backend_fd);
1760 1810
1811#if EV_USE_IOCP
1812 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1813#endif
1761#if EV_USE_PORT 1814#if EV_USE_PORT
1762 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1815 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1763#endif 1816#endif
1764#if EV_USE_KQUEUE 1817#if EV_USE_KQUEUE
1765 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 1818 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1792 array_free (periodic, EMPTY); 1845 array_free (periodic, EMPTY);
1793#endif 1846#endif
1794#if EV_FORK_ENABLE 1847#if EV_FORK_ENABLE
1795 array_free (fork, EMPTY); 1848 array_free (fork, EMPTY);
1796#endif 1849#endif
1850#if EV_CLEANUP_ENABLE
1851 array_free (cleanup, EMPTY);
1852#endif
1797 array_free (prepare, EMPTY); 1853 array_free (prepare, EMPTY);
1798 array_free (check, EMPTY); 1854 array_free (check, EMPTY);
1799#if EV_ASYNC_ENABLE 1855#if EV_ASYNC_ENABLE
1800 array_free (async, EMPTY); 1856 array_free (async, EMPTY);
1801#endif 1857#endif
1802 1858
1803 backend = 0; 1859 backend = 0;
1860
1861#if EV_MULTIPLICITY
1862 if (ev_is_default_loop (EV_A))
1863#endif
1864 ev_default_loop_ptr = 0;
1865#if EV_MULTIPLICITY
1866 else
1867 ev_free (EV_A);
1868#endif
1804} 1869}
1805 1870
1806#if EV_USE_INOTIFY 1871#if EV_USE_INOTIFY
1807inline_size void infy_fork (EV_P); 1872inline_size void infy_fork (EV_P);
1808#endif 1873#endif
… …
1867 loop_init (EV_A_ flags); 1932 loop_init (EV_A_ flags);
1868 1933
1869 if (ev_backend (EV_A)) 1934 if (ev_backend (EV_A))
1870 return EV_A; 1935 return EV_A;
1871 1936
1937 ev_free (EV_A);
1872 return 0; 1938 return 0;
1873} 1939}
1874 1940
1875void
1876ev_loop_destroy (EV_P)
1877{
1878 loop_destroy (EV_A);
1879 ev_free (loop);
1880}
1881
1882void
1883ev_loop_fork (EV_P)
1884{
1885 postfork = 1; /* must be in line with ev_default_fork */
1886}
1887#endif /* multiplicity */ 1941#endif /* multiplicity */
1888 1942
1889#if EV_VERIFY 1943#if EV_VERIFY
1890static void noinline 1944static void noinline
1891verify_watcher (EV_P_ W w) 1945verify_watcher (EV_P_ W w)
… …
1966#if EV_FORK_ENABLE 2020#if EV_FORK_ENABLE
1967 assert (forkmax >= forkcnt); 2021 assert (forkmax >= forkcnt);
1968 array_verify (EV_A_ (W *)forks, forkcnt); 2022 array_verify (EV_A_ (W *)forks, forkcnt);
1969#endif 2023#endif
1970 2024
2025#if EV_CLEANUP_ENABLE
2026 assert (cleanupmax >= cleanupcnt);
2027 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2028#endif
2029
1971#if EV_ASYNC_ENABLE 2030#if EV_ASYNC_ENABLE
1972 assert (asyncmax >= asynccnt); 2031 assert (asyncmax >= asynccnt);
1973 array_verify (EV_A_ (W *)asyncs, asynccnt); 2032 array_verify (EV_A_ (W *)asyncs, asynccnt);
1974#endif 2033#endif
1975 2034
… …
1993} 2052}
1994#endif 2053#endif
1995 2054
1996#if EV_MULTIPLICITY 2055#if EV_MULTIPLICITY
1997struct ev_loop * 2056struct ev_loop *
1998ev_default_loop_init (unsigned int flags)
1999#else 2057#else
2000int 2058int
2059#endif
2001ev_default_loop (unsigned int flags) 2060ev_default_loop (unsigned int flags)
2002#endif
2003{ 2061{
2004 if (!ev_default_loop_ptr) 2062 if (!ev_default_loop_ptr)
2005 { 2063 {
2006#if EV_MULTIPLICITY 2064#if EV_MULTIPLICITY
2007 EV_P = ev_default_loop_ptr = &default_loop_struct; 2065 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2026 2084
2027 return ev_default_loop_ptr; 2085 return ev_default_loop_ptr;
2028} 2086}
2029 2087
2030void 2088void
2031ev_default_destroy (void) 2089ev_loop_fork (EV_P)
2032{ 2090{
2033#if EV_MULTIPLICITY
2034 EV_P = ev_default_loop_ptr;
2035#endif
2036
2037 ev_default_loop_ptr = 0;
2038
2039#if EV_CHILD_ENABLE
2040 ev_ref (EV_A); /* child watcher */
2041 ev_signal_stop (EV_A_ &childev);
2042#endif
2043
2044 loop_destroy (EV_A);
2045}
2046
2047void
2048ev_default_fork (void)
2049{
2050#if EV_MULTIPLICITY
2051 EV_P = ev_default_loop_ptr;
2052#endif
2053
2054 postfork = 1; /* must be in line with ev_loop_fork */ 2091 postfork = 1; /* must be in line with ev_default_fork */
2055} 2092}
2056 2093
2057/*****************************************************************************/ 2094/*****************************************************************************/
2058 2095
2059void 2096void
… …
2081 2118
2082 for (pri = NUMPRI; pri--; ) 2119 for (pri = NUMPRI; pri--; )
2083 while (pendingcnt [pri]) 2120 while (pendingcnt [pri])
2084 { 2121 {
2085 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2122 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
2086
2087 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2088 /* ^ this is no longer true, as pending_w could be here */
2089 2123
2090 p->w->pending = 0; 2124 p->w->pending = 0;
2091 EV_CB_INVOKE (p->w, p->events); 2125 EV_CB_INVOKE (p->w, p->events);
2092 EV_FREQUENT_CHECK; 2126 EV_FREQUENT_CHECK;
2093 } 2127 }
… …
2861 sa.sa_handler = ev_sighandler; 2895 sa.sa_handler = ev_sighandler;
2862 sigfillset (&sa.sa_mask); 2896 sigfillset (&sa.sa_mask);
2863 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2897 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2864 sigaction (w->signum, &sa, 0); 2898 sigaction (w->signum, &sa, 0);
2865 2899
2900 if (origflags & EVFLAG_NOSIGMASK)
2901 {
2866 sigemptyset (&sa.sa_mask); 2902 sigemptyset (&sa.sa_mask);
2867 sigaddset (&sa.sa_mask, w->signum); 2903 sigaddset (&sa.sa_mask, w->signum);
2868 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 2904 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2905 }
2869#endif 2906#endif
2870 } 2907 }
2871 2908
2872 EV_FREQUENT_CHECK; 2909 EV_FREQUENT_CHECK;
2873} 2910}
… …
3565 3602
3566 EV_FREQUENT_CHECK; 3603 EV_FREQUENT_CHECK;
3567} 3604}
3568#endif 3605#endif
3569 3606
3607#if EV_CLEANUP_ENABLE
3608void
3609ev_cleanup_start (EV_P_ ev_cleanup *w)
3610{
3611 if (expect_false (ev_is_active (w)))
3612 return;
3613
3614 EV_FREQUENT_CHECK;
3615
3616 ev_start (EV_A_ (W)w, ++cleanupcnt);
3617 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
3618 cleanups [cleanupcnt - 1] = w;
3619
3620 /* cleanup watchers should never keep a refcount on the loop */
3621 ev_unref (EV_A);
3622 EV_FREQUENT_CHECK;
3623}
3624
3625void
3626ev_cleanup_stop (EV_P_ ev_cleanup *w)
3627{
3628 clear_pending (EV_A_ (W)w);
3629 if (expect_false (!ev_is_active (w)))
3630 return;
3631
3632 EV_FREQUENT_CHECK;
3633 ev_ref (EV_A);
3634
3635 {
3636 int active = ev_active (w);
3637
3638 cleanups [active - 1] = cleanups [--cleanupcnt];
3639 ev_active (cleanups [active - 1]) = active;
3640 }
3641
3642 ev_stop (EV_A_ (W)w);
3643
3644 EV_FREQUENT_CHECK;
3645}
3646#endif
3647
3570#if EV_ASYNC_ENABLE 3648#if EV_ASYNC_ENABLE
3571void 3649void
3572ev_async_start (EV_P_ ev_async *w) 3650ev_async_start (EV_P_ ev_async *w)
3573{ 3651{
3574 if (expect_false (ev_is_active (w))) 3652 if (expect_false (ev_is_active (w)))

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