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Comparing libev/ev.c (file contents):
Revision 1.355 by root, Fri Oct 22 10:09:12 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 *
… …
382# include <sys/select.h> 382# include <sys/select.h>
383# endif 383# endif
384#endif 384#endif
385 385
386#if EV_USE_INOTIFY 386#if EV_USE_INOTIFY
387# include <sys/utsname.h>
388# include <sys/statfs.h> 387# include <sys/statfs.h>
389# include <sys/inotify.h> 388# include <sys/inotify.h>
390/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 389/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
391# ifndef IN_DONT_FOLLOW 390# ifndef IN_DONT_FOLLOW
392# undef EV_USE_INOTIFY 391# undef EV_USE_INOTIFY
… …
523# include "ev_win32.c" 522# include "ev_win32.c"
524#endif 523#endif
525 524
526/*****************************************************************************/ 525/*****************************************************************************/
527 526
527#ifdef __linux
528# include <sys/utsname.h>
529#endif
530
528static unsigned int noinline 531static unsigned int noinline
529ev_linux_version (void) 532ev_linux_version (void)
530{ 533{
531#ifdef __linux 534#ifdef __linux
535 unsigned int v = 0;
532 struct utsname buf; 536 struct utsname buf;
533 unsigned int v;
534 int i; 537 int i;
535 char *p = buf.release; 538 char *p = buf.release;
536 539
537 if (uname (&buf)) 540 if (uname (&buf))
538 return 0; 541 return 0;
… …
588 if (syserr_cb) 591 if (syserr_cb)
589 syserr_cb (msg); 592 syserr_cb (msg);
590 else 593 else
591 { 594 {
592#if EV_AVOID_STDIO 595#if EV_AVOID_STDIO
593 const char *err = strerror (errno);
594
595 ev_printerr (msg); 596 ev_printerr (msg);
596 ev_printerr (": "); 597 ev_printerr (": ");
597 ev_printerr (err); 598 ev_printerr (strerror (errno));
598 ev_printerr ("\n"); 599 ev_printerr ("\n");
599#else 600#else
600 perror (msg); 601 perror (msg);
601#endif 602#endif
602 abort (); 603 abort ();
… …
636 ptr = alloc (ptr, size); 637 ptr = alloc (ptr, size);
637 638
638 if (!ptr && size) 639 if (!ptr && size)
639 { 640 {
640#if EV_AVOID_STDIO 641#if EV_AVOID_STDIO
641 ev_printerr ("libev: memory allocation failed, aborting.\n"); 642 ev_printerr ("(libev) memory allocation failed, aborting.\n");
642#else 643#else
643 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 644 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
644#endif 645#endif
645 abort (); 646 abort ();
646 } 647 }
647 648
648 return ptr; 649 return ptr;
… …
665 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 */
666 unsigned char unused; 667 unsigned char unused;
667#if EV_USE_EPOLL 668#if EV_USE_EPOLL
668 unsigned int egen; /* generation counter to counter epoll bugs */ 669 unsigned int egen; /* generation counter to counter epoll bugs */
669#endif 670#endif
670#if EV_SELECT_IS_WINSOCKET 671#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
671 SOCKET handle; 672 SOCKET handle;
673#endif
674#if EV_USE_IOCP
675 OVERLAPPED or, ow;
672#endif 676#endif
673} ANFD; 677} ANFD;
674 678
675/* stores the pending event set for a given watcher */ 679/* stores the pending event set for a given watcher */
676typedef struct 680typedef struct
… …
972 unsigned char o_events = anfd->events; 976 unsigned char o_events = anfd->events;
973 unsigned char o_reify = anfd->reify; 977 unsigned char o_reify = anfd->reify;
974 978
975 anfd->reify = 0; 979 anfd->reify = 0;
976 980
977#if EV_SELECT_IS_WINSOCKET 981#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
978 if (o_reify & EV__IOFDSET) 982 if (o_reify & EV__IOFDSET)
979 { 983 {
980 unsigned long arg; 984 unsigned long arg;
981 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 985 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
982 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 986 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
987 printf ("oi %d %x\n", fd, anfd->handle);//D
983 } 988 }
984#endif 989#endif
985 990
986 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 991 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
987 { 992 {
… …
1364#endif 1369#endif
1365} 1370}
1366 1371
1367/*****************************************************************************/ 1372/*****************************************************************************/
1368 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
1369static void 1388static void
1370ev_sighandler (int signum) 1389ev_sighandler (int signum)
1371{ 1390{
1372#if EV_MULTIPLICITY
1373 EV_P = signals [signum - 1].loop;
1374#endif
1375
1376#ifdef _WIN32 1391#ifdef _WIN32
1377 signal (signum, ev_sighandler); 1392 signal (signum, ev_sighandler);
1378#endif 1393#endif
1379 1394
1380 signals [signum - 1].pending = 1; 1395 ev_feed_signal (signum);
1381 evpipe_write (EV_A_ &sig_pending);
1382} 1396}
1383 1397
1384void noinline 1398void noinline
1385ev_feed_signal_event (EV_P_ int signum) 1399ev_feed_signal_event (EV_P_ int signum)
1386{ 1400{
… …
1486 1500
1487#endif 1501#endif
1488 1502
1489/*****************************************************************************/ 1503/*****************************************************************************/
1490 1504
1505#if EV_USE_IOCP
1506# include "ev_iocp.c"
1507#endif
1491#if EV_USE_PORT 1508#if EV_USE_PORT
1492# include "ev_port.c" 1509# include "ev_port.c"
1493#endif 1510#endif
1494#if EV_USE_KQUEUE 1511#if EV_USE_KQUEUE
1495# include "ev_kqueue.c" 1512# include "ev_kqueue.c"
… …
1635static void noinline 1652static void noinline
1636loop_init (EV_P_ unsigned int flags) 1653loop_init (EV_P_ unsigned int flags)
1637{ 1654{
1638 if (!backend) 1655 if (!backend)
1639 { 1656 {
1657 origflags = flags;
1658
1640#if EV_USE_REALTIME 1659#if EV_USE_REALTIME
1641 if (!have_realtime) 1660 if (!have_realtime)
1642 { 1661 {
1643 struct timespec ts; 1662 struct timespec ts;
1644 1663
… …
1689#endif 1708#endif
1690#if EV_USE_SIGNALFD 1709#if EV_USE_SIGNALFD
1691 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 1710 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1692#endif 1711#endif
1693 1712
1694 if (!(flags & 0x0000ffffU)) 1713 if (!(flags & EVBACKEND_MASK))
1695 flags |= ev_recommended_backends (); 1714 flags |= ev_recommended_backends ();
1696 1715
1716#if EV_USE_IOCP
1717 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1718#endif
1697#if EV_USE_PORT 1719#if EV_USE_PORT
1698 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1720 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1699#endif 1721#endif
1700#if EV_USE_KQUEUE 1722#if EV_USE_KQUEUE
1701 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1723 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1718#endif 1740#endif
1719 } 1741 }
1720} 1742}
1721 1743
1722/* free up a loop structure */ 1744/* free up a loop structure */
1723static void noinline 1745void
1724loop_destroy (EV_P) 1746ev_loop_destroy (EV_P)
1725{ 1747{
1726 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
1727 1772
1728 if (ev_is_active (&pipe_w)) 1773 if (ev_is_active (&pipe_w))
1729 { 1774 {
1730 /*ev_ref (EV_A);*/ 1775 /*ev_ref (EV_A);*/
1731 /*ev_io_stop (EV_A_ &pipe_w);*/ 1776 /*ev_io_stop (EV_A_ &pipe_w);*/
… …
1753#endif 1798#endif
1754 1799
1755 if (backend_fd >= 0) 1800 if (backend_fd >= 0)
1756 close (backend_fd); 1801 close (backend_fd);
1757 1802
1803#if EV_USE_IOCP
1804 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1805#endif
1758#if EV_USE_PORT 1806#if EV_USE_PORT
1759 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1807 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1760#endif 1808#endif
1761#if EV_USE_KQUEUE 1809#if EV_USE_KQUEUE
1762 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 1810 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1789 array_free (periodic, EMPTY); 1837 array_free (periodic, EMPTY);
1790#endif 1838#endif
1791#if EV_FORK_ENABLE 1839#if EV_FORK_ENABLE
1792 array_free (fork, EMPTY); 1840 array_free (fork, EMPTY);
1793#endif 1841#endif
1842#if EV_CLEANUP_ENABLE
1843 array_free (cleanup, EMPTY);
1844#endif
1794 array_free (prepare, EMPTY); 1845 array_free (prepare, EMPTY);
1795 array_free (check, EMPTY); 1846 array_free (check, EMPTY);
1796#if EV_ASYNC_ENABLE 1847#if EV_ASYNC_ENABLE
1797 array_free (async, EMPTY); 1848 array_free (async, EMPTY);
1798#endif 1849#endif
1799 1850
1800 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
1801} 1861}
1802 1862
1803#if EV_USE_INOTIFY 1863#if EV_USE_INOTIFY
1804inline_size void infy_fork (EV_P); 1864inline_size void infy_fork (EV_P);
1805#endif 1865#endif
… …
1864 loop_init (EV_A_ flags); 1924 loop_init (EV_A_ flags);
1865 1925
1866 if (ev_backend (EV_A)) 1926 if (ev_backend (EV_A))
1867 return EV_A; 1927 return EV_A;
1868 1928
1929 ev_free (EV_A);
1869 return 0; 1930 return 0;
1870} 1931}
1871 1932
1872void
1873ev_loop_destroy (EV_P)
1874{
1875 loop_destroy (EV_A);
1876 ev_free (loop);
1877}
1878
1879void
1880ev_loop_fork (EV_P)
1881{
1882 postfork = 1; /* must be in line with ev_default_fork */
1883}
1884#endif /* multiplicity */ 1933#endif /* multiplicity */
1885 1934
1886#if EV_VERIFY 1935#if EV_VERIFY
1887static void noinline 1936static void noinline
1888verify_watcher (EV_P_ W w) 1937verify_watcher (EV_P_ W w)
… …
1963#if EV_FORK_ENABLE 2012#if EV_FORK_ENABLE
1964 assert (forkmax >= forkcnt); 2013 assert (forkmax >= forkcnt);
1965 array_verify (EV_A_ (W *)forks, forkcnt); 2014 array_verify (EV_A_ (W *)forks, forkcnt);
1966#endif 2015#endif
1967 2016
2017#if EV_CLEANUP_ENABLE
2018 assert (cleanupmax >= cleanupcnt);
2019 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2020#endif
2021
1968#if EV_ASYNC_ENABLE 2022#if EV_ASYNC_ENABLE
1969 assert (asyncmax >= asynccnt); 2023 assert (asyncmax >= asynccnt);
1970 array_verify (EV_A_ (W *)asyncs, asynccnt); 2024 array_verify (EV_A_ (W *)asyncs, asynccnt);
1971#endif 2025#endif
1972 2026
… …
1990} 2044}
1991#endif 2045#endif
1992 2046
1993#if EV_MULTIPLICITY 2047#if EV_MULTIPLICITY
1994struct ev_loop * 2048struct ev_loop *
1995ev_default_loop_init (unsigned int flags)
1996#else 2049#else
1997int 2050int
2051#endif
1998ev_default_loop (unsigned int flags) 2052ev_default_loop (unsigned int flags)
1999#endif
2000{ 2053{
2001 if (!ev_default_loop_ptr) 2054 if (!ev_default_loop_ptr)
2002 { 2055 {
2003#if EV_MULTIPLICITY 2056#if EV_MULTIPLICITY
2004 EV_P = ev_default_loop_ptr = &default_loop_struct; 2057 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2023 2076
2024 return ev_default_loop_ptr; 2077 return ev_default_loop_ptr;
2025} 2078}
2026 2079
2027void 2080void
2028ev_default_destroy (void) 2081ev_loop_fork (EV_P)
2029{ 2082{
2030#if EV_MULTIPLICITY
2031 EV_P = ev_default_loop_ptr;
2032#endif
2033
2034 ev_default_loop_ptr = 0;
2035
2036#if EV_CHILD_ENABLE
2037 ev_ref (EV_A); /* child watcher */
2038 ev_signal_stop (EV_A_ &childev);
2039#endif
2040
2041 loop_destroy (EV_A);
2042}
2043
2044void
2045ev_default_fork (void)
2046{
2047#if EV_MULTIPLICITY
2048 EV_P = ev_default_loop_ptr;
2049#endif
2050
2051 postfork = 1; /* must be in line with ev_loop_fork */ 2083 postfork = 1; /* must be in line with ev_default_fork */
2052} 2084}
2053 2085
2054/*****************************************************************************/ 2086/*****************************************************************************/
2055 2087
2056void 2088void
… …
2078 2110
2079 for (pri = NUMPRI; pri--; ) 2111 for (pri = NUMPRI; pri--; )
2080 while (pendingcnt [pri]) 2112 while (pendingcnt [pri])
2081 { 2113 {
2082 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2114 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 2115
2087 p->w->pending = 0; 2116 p->w->pending = 0;
2088 EV_CB_INVOKE (p->w, p->events); 2117 EV_CB_INVOKE (p->w, p->events);
2089 EV_FREQUENT_CHECK; 2118 EV_FREQUENT_CHECK;
2090 } 2119 }
… …
2858 sa.sa_handler = ev_sighandler; 2887 sa.sa_handler = ev_sighandler;
2859 sigfillset (&sa.sa_mask); 2888 sigfillset (&sa.sa_mask);
2860 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 */
2861 sigaction (w->signum, &sa, 0); 2890 sigaction (w->signum, &sa, 0);
2862 2891
2892 if (origflags & EVFLAG_NOSIGMASK)
2893 {
2863 sigemptyset (&sa.sa_mask); 2894 sigemptyset (&sa.sa_mask);
2864 sigaddset (&sa.sa_mask, w->signum); 2895 sigaddset (&sa.sa_mask, w->signum);
2865 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 2896 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2897 }
2866#endif 2898#endif
2867 } 2899 }
2868 2900
2869 EV_FREQUENT_CHECK; 2901 EV_FREQUENT_CHECK;
2870} 2902}
… …
3562 3594
3563 EV_FREQUENT_CHECK; 3595 EV_FREQUENT_CHECK;
3564} 3596}
3565#endif 3597#endif
3566 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
3567#if EV_ASYNC_ENABLE 3640#if EV_ASYNC_ENABLE
3568void 3641void
3569ev_async_start (EV_P_ ev_async *w) 3642ev_async_start (EV_P_ ev_async *w)
3570{ 3643{
3571 if (expect_false (ev_is_active (w))) 3644 if (expect_false (ev_is_active (w)))

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