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 | * |
10 | * 1. Redistributions of source code must retain the above copyright notice, |
10 | * 1. Redistributions of source code must retain the above copyright notice, |
11 | * this list of conditions and the following disclaimer. |
11 | * this list of conditions and the following disclaimer. |
12 | * |
12 | * |
13 | * 2. Redistributions in binary form must reproduce the above copyright |
13 | * 2. Redistributions in binary form must reproduce the above copyright |
14 | * notice, this list of conditions and the following disclaimer in the |
14 | * notice, this list of conditions and the following disclaimer in the |
15 | * documentation and/or other materials provided with the distribution. |
15 | * documentation and/or other materials provided with the distribution. |
16 | * |
16 | * |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
18 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- |
18 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- |
19 | * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
19 | * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
20 | * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- |
20 | * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- |
21 | * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
21 | * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
… | |
… | |
376 | # undef EV_USE_INOTIFY |
376 | # undef EV_USE_INOTIFY |
377 | # define EV_USE_INOTIFY 0 |
377 | # define EV_USE_INOTIFY 0 |
378 | #endif |
378 | #endif |
379 | |
379 | |
380 | #if !EV_USE_NANOSLEEP |
380 | #if !EV_USE_NANOSLEEP |
381 | # ifndef _WIN32 |
381 | /* hp-ux has it in sys/time.h, which we unconditionally include above */ |
|
|
382 | # if !defined(_WIN32) && !defined(__hpux) |
382 | # include <sys/select.h> |
383 | # include <sys/select.h> |
383 | # endif |
384 | # endif |
384 | #endif |
385 | #endif |
385 | |
386 | |
386 | #if EV_USE_INOTIFY |
387 | #if EV_USE_INOTIFY |
387 | # include <sys/utsname.h> |
|
|
388 | # include <sys/statfs.h> |
388 | # include <sys/statfs.h> |
389 | # include <sys/inotify.h> |
389 | # include <sys/inotify.h> |
390 | /* some very old inotify.h headers don't have IN_DONT_FOLLOW */ |
390 | /* some very old inotify.h headers don't have IN_DONT_FOLLOW */ |
391 | # ifndef IN_DONT_FOLLOW |
391 | # ifndef IN_DONT_FOLLOW |
392 | # undef EV_USE_INOTIFY |
392 | # undef EV_USE_INOTIFY |
… | |
… | |
523 | # include "ev_win32.c" |
523 | # include "ev_win32.c" |
524 | #endif |
524 | #endif |
525 | |
525 | |
526 | /*****************************************************************************/ |
526 | /*****************************************************************************/ |
527 | |
527 | |
|
|
528 | #ifdef __linux |
|
|
529 | # include <sys/utsname.h> |
|
|
530 | #endif |
|
|
531 | |
|
|
532 | static unsigned int noinline |
|
|
533 | ev_linux_version (void) |
|
|
534 | { |
|
|
535 | #ifdef __linux |
|
|
536 | unsigned int v = 0; |
|
|
537 | struct utsname buf; |
|
|
538 | int i; |
|
|
539 | char *p = buf.release; |
|
|
540 | |
|
|
541 | if (uname (&buf)) |
|
|
542 | return 0; |
|
|
543 | |
|
|
544 | for (i = 3+1; --i; ) |
|
|
545 | { |
|
|
546 | unsigned int c = 0; |
|
|
547 | |
|
|
548 | for (;;) |
|
|
549 | { |
|
|
550 | if (*p >= '0' && *p <= '9') |
|
|
551 | c = c * 10 + *p++ - '0'; |
|
|
552 | else |
|
|
553 | { |
|
|
554 | p += *p == '.'; |
|
|
555 | break; |
|
|
556 | } |
|
|
557 | } |
|
|
558 | |
|
|
559 | v = (v << 8) | c; |
|
|
560 | } |
|
|
561 | |
|
|
562 | return v; |
|
|
563 | #else |
|
|
564 | return 0; |
|
|
565 | #endif |
|
|
566 | } |
|
|
567 | |
|
|
568 | /*****************************************************************************/ |
|
|
569 | |
528 | #if EV_AVOID_STDIO |
570 | #if EV_AVOID_STDIO |
529 | static void noinline |
571 | static void noinline |
530 | ev_printerr (const char *msg) |
572 | ev_printerr (const char *msg) |
531 | { |
573 | { |
532 | write (STDERR_FILENO, msg, strlen (msg)); |
574 | write (STDERR_FILENO, msg, strlen (msg)); |
… | |
… | |
550 | if (syserr_cb) |
592 | if (syserr_cb) |
551 | syserr_cb (msg); |
593 | syserr_cb (msg); |
552 | else |
594 | else |
553 | { |
595 | { |
554 | #if EV_AVOID_STDIO |
596 | #if EV_AVOID_STDIO |
555 | const char *err = strerror (errno); |
|
|
556 | |
|
|
557 | ev_printerr (msg); |
597 | ev_printerr (msg); |
558 | ev_printerr (": "); |
598 | ev_printerr (": "); |
559 | ev_printerr (err); |
599 | ev_printerr (strerror (errno)); |
560 | ev_printerr ("\n"); |
600 | ev_printerr ("\n"); |
561 | #else |
601 | #else |
562 | perror (msg); |
602 | perror (msg); |
563 | #endif |
603 | #endif |
564 | abort (); |
604 | abort (); |
… | |
… | |
598 | ptr = alloc (ptr, size); |
638 | ptr = alloc (ptr, size); |
599 | |
639 | |
600 | if (!ptr && size) |
640 | if (!ptr && size) |
601 | { |
641 | { |
602 | #if EV_AVOID_STDIO |
642 | #if EV_AVOID_STDIO |
603 | ev_printerr ("libev: memory allocation failed, aborting.\n"); |
643 | ev_printerr ("(libev) memory allocation failed, aborting.\n"); |
604 | #else |
644 | #else |
605 | fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); |
645 | fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size); |
606 | #endif |
646 | #endif |
607 | abort (); |
647 | abort (); |
608 | } |
648 | } |
609 | |
649 | |
610 | return ptr; |
650 | return ptr; |
… | |
… | |
627 | unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ |
667 | unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ |
628 | unsigned char unused; |
668 | unsigned char unused; |
629 | #if EV_USE_EPOLL |
669 | #if EV_USE_EPOLL |
630 | unsigned int egen; /* generation counter to counter epoll bugs */ |
670 | unsigned int egen; /* generation counter to counter epoll bugs */ |
631 | #endif |
671 | #endif |
632 | #if EV_SELECT_IS_WINSOCKET |
672 | #if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP |
633 | SOCKET handle; |
673 | SOCKET handle; |
|
|
674 | #endif |
|
|
675 | #if EV_USE_IOCP |
|
|
676 | OVERLAPPED or, ow; |
634 | #endif |
677 | #endif |
635 | } ANFD; |
678 | } ANFD; |
636 | |
679 | |
637 | /* stores the pending event set for a given watcher */ |
680 | /* stores the pending event set for a given watcher */ |
638 | typedef struct |
681 | typedef struct |
… | |
… | |
773 | select (0, 0, 0, 0, &tv); |
816 | select (0, 0, 0, 0, &tv); |
774 | #endif |
817 | #endif |
775 | } |
818 | } |
776 | } |
819 | } |
777 | |
820 | |
|
|
821 | inline_speed int |
|
|
822 | ev_timeout_to_ms (ev_tstamp timeout) |
|
|
823 | { |
|
|
824 | int ms = timeout * 1000. + .999999; |
|
|
825 | |
|
|
826 | return expect_true (ms) ? ms : timeout < 1e-6 ? 0 : 1; |
|
|
827 | } |
|
|
828 | |
778 | /*****************************************************************************/ |
829 | /*****************************************************************************/ |
779 | |
830 | |
780 | #define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ |
831 | #define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ |
781 | |
832 | |
782 | /* find a suitable new size for the given array, */ |
833 | /* find a suitable new size for the given array, */ |
… | |
… | |
923 | inline_size void |
974 | inline_size void |
924 | fd_reify (EV_P) |
975 | fd_reify (EV_P) |
925 | { |
976 | { |
926 | int i; |
977 | int i; |
927 | |
978 | |
|
|
979 | #if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP |
|
|
980 | for (i = 0; i < fdchangecnt; ++i) |
|
|
981 | { |
|
|
982 | int fd = fdchanges [i]; |
|
|
983 | ANFD *anfd = anfds + fd; |
|
|
984 | |
|
|
985 | if (anfd->reify & EV__IOFDSET) |
|
|
986 | { |
|
|
987 | SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd); |
|
|
988 | |
|
|
989 | if (handle != anfd->handle) |
|
|
990 | { |
|
|
991 | unsigned long arg; |
|
|
992 | |
|
|
993 | assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0)); |
|
|
994 | |
|
|
995 | /* handle changed, but fd didn't - we need to do it in two steps */ |
|
|
996 | backend_modify (EV_A_ fd, anfd->events, 0); |
|
|
997 | anfd->events = 0; |
|
|
998 | anfd->handle = handle; |
|
|
999 | } |
|
|
1000 | } |
|
|
1001 | } |
|
|
1002 | #endif |
|
|
1003 | |
928 | for (i = 0; i < fdchangecnt; ++i) |
1004 | for (i = 0; i < fdchangecnt; ++i) |
929 | { |
1005 | { |
930 | int fd = fdchanges [i]; |
1006 | int fd = fdchanges [i]; |
931 | ANFD *anfd = anfds + fd; |
1007 | ANFD *anfd = anfds + fd; |
932 | ev_io *w; |
1008 | ev_io *w; |
933 | |
1009 | |
934 | unsigned char o_events = anfd->events; |
1010 | unsigned char o_events = anfd->events; |
935 | unsigned char o_reify = anfd->reify; |
1011 | unsigned char o_reify = anfd->reify; |
936 | |
1012 | |
937 | anfd->reify = 0; |
1013 | anfd->reify = 0; |
938 | |
|
|
939 | #if EV_SELECT_IS_WINSOCKET |
|
|
940 | if (o_reify & EV__IOFDSET) |
|
|
941 | { |
|
|
942 | unsigned long arg; |
|
|
943 | anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); |
|
|
944 | assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); |
|
|
945 | } |
|
|
946 | #endif |
|
|
947 | |
1014 | |
948 | /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ |
1015 | /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ |
949 | { |
1016 | { |
950 | anfd->events = 0; |
1017 | anfd->events = 0; |
951 | |
1018 | |
… | |
… | |
1300 | char dummy; |
1367 | char dummy; |
1301 | /* see discussion in evpipe_write when you think this read should be recv in win32 */ |
1368 | /* see discussion in evpipe_write when you think this read should be recv in win32 */ |
1302 | read (evpipe [0], &dummy, 1); |
1369 | read (evpipe [0], &dummy, 1); |
1303 | } |
1370 | } |
1304 | |
1371 | |
|
|
1372 | #if EV_SIGNAL_ENABLE |
1305 | if (sig_pending) |
1373 | if (sig_pending) |
1306 | { |
1374 | { |
1307 | sig_pending = 0; |
1375 | sig_pending = 0; |
1308 | |
1376 | |
1309 | for (i = EV_NSIG - 1; i--; ) |
1377 | for (i = EV_NSIG - 1; i--; ) |
1310 | if (expect_false (signals [i].pending)) |
1378 | if (expect_false (signals [i].pending)) |
1311 | ev_feed_signal_event (EV_A_ i + 1); |
1379 | ev_feed_signal_event (EV_A_ i + 1); |
1312 | } |
1380 | } |
|
|
1381 | #endif |
1313 | |
1382 | |
1314 | #if EV_ASYNC_ENABLE |
1383 | #if EV_ASYNC_ENABLE |
1315 | if (async_pending) |
1384 | if (async_pending) |
1316 | { |
1385 | { |
1317 | async_pending = 0; |
1386 | async_pending = 0; |
… | |
… | |
1326 | #endif |
1395 | #endif |
1327 | } |
1396 | } |
1328 | |
1397 | |
1329 | /*****************************************************************************/ |
1398 | /*****************************************************************************/ |
1330 | |
1399 | |
|
|
1400 | void |
|
|
1401 | ev_feed_signal (int signum) |
|
|
1402 | { |
|
|
1403 | #if EV_MULTIPLICITY |
|
|
1404 | EV_P = signals [signum - 1].loop; |
|
|
1405 | |
|
|
1406 | if (!EV_A) |
|
|
1407 | return; |
|
|
1408 | #endif |
|
|
1409 | |
|
|
1410 | signals [signum - 1].pending = 1; |
|
|
1411 | evpipe_write (EV_A_ &sig_pending); |
|
|
1412 | } |
|
|
1413 | |
1331 | static void |
1414 | static void |
1332 | ev_sighandler (int signum) |
1415 | ev_sighandler (int signum) |
1333 | { |
1416 | { |
1334 | #if EV_MULTIPLICITY |
|
|
1335 | EV_P = signals [signum - 1].loop; |
|
|
1336 | #endif |
|
|
1337 | |
|
|
1338 | #ifdef _WIN32 |
1417 | #ifdef _WIN32 |
1339 | signal (signum, ev_sighandler); |
1418 | signal (signum, ev_sighandler); |
1340 | #endif |
1419 | #endif |
1341 | |
1420 | |
1342 | signals [signum - 1].pending = 1; |
1421 | ev_feed_signal (signum); |
1343 | evpipe_write (EV_A_ &sig_pending); |
|
|
1344 | } |
1422 | } |
1345 | |
1423 | |
1346 | void noinline |
1424 | void noinline |
1347 | ev_feed_signal_event (EV_P_ int signum) |
1425 | ev_feed_signal_event (EV_P_ int signum) |
1348 | { |
1426 | { |
… | |
… | |
1448 | |
1526 | |
1449 | #endif |
1527 | #endif |
1450 | |
1528 | |
1451 | /*****************************************************************************/ |
1529 | /*****************************************************************************/ |
1452 | |
1530 | |
|
|
1531 | #if EV_USE_IOCP |
|
|
1532 | # include "ev_iocp.c" |
|
|
1533 | #endif |
1453 | #if EV_USE_PORT |
1534 | #if EV_USE_PORT |
1454 | # include "ev_port.c" |
1535 | # include "ev_port.c" |
1455 | #endif |
1536 | #endif |
1456 | #if EV_USE_KQUEUE |
1537 | #if EV_USE_KQUEUE |
1457 | # include "ev_kqueue.c" |
1538 | # include "ev_kqueue.c" |
… | |
… | |
1530 | ev_embeddable_backends (void) |
1611 | ev_embeddable_backends (void) |
1531 | { |
1612 | { |
1532 | int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; |
1613 | int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; |
1533 | |
1614 | |
1534 | /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ |
1615 | /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ |
1535 | /* please fix it and tell me how to detect the fix */ |
1616 | if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ |
1536 | flags &= ~EVBACKEND_EPOLL; |
1617 | flags &= ~EVBACKEND_EPOLL; |
1537 | |
1618 | |
1538 | return flags; |
1619 | return flags; |
1539 | } |
1620 | } |
1540 | |
1621 | |
1541 | unsigned int |
1622 | unsigned int |
… | |
… | |
1597 | static void noinline |
1678 | static void noinline |
1598 | loop_init (EV_P_ unsigned int flags) |
1679 | loop_init (EV_P_ unsigned int flags) |
1599 | { |
1680 | { |
1600 | if (!backend) |
1681 | if (!backend) |
1601 | { |
1682 | { |
|
|
1683 | origflags = flags; |
|
|
1684 | |
1602 | #if EV_USE_REALTIME |
1685 | #if EV_USE_REALTIME |
1603 | if (!have_realtime) |
1686 | if (!have_realtime) |
1604 | { |
1687 | { |
1605 | struct timespec ts; |
1688 | struct timespec ts; |
1606 | |
1689 | |
… | |
… | |
1651 | #endif |
1734 | #endif |
1652 | #if EV_USE_SIGNALFD |
1735 | #if EV_USE_SIGNALFD |
1653 | sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; |
1736 | sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; |
1654 | #endif |
1737 | #endif |
1655 | |
1738 | |
1656 | if (!(flags & 0x0000ffffU)) |
1739 | if (!(flags & EVBACKEND_MASK)) |
1657 | flags |= ev_recommended_backends (); |
1740 | flags |= ev_recommended_backends (); |
1658 | |
1741 | |
|
|
1742 | #if EV_USE_IOCP |
|
|
1743 | if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); |
|
|
1744 | #endif |
1659 | #if EV_USE_PORT |
1745 | #if EV_USE_PORT |
1660 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
1746 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
1661 | #endif |
1747 | #endif |
1662 | #if EV_USE_KQUEUE |
1748 | #if EV_USE_KQUEUE |
1663 | if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); |
1749 | if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); |
… | |
… | |
1680 | #endif |
1766 | #endif |
1681 | } |
1767 | } |
1682 | } |
1768 | } |
1683 | |
1769 | |
1684 | /* free up a loop structure */ |
1770 | /* free up a loop structure */ |
1685 | static void noinline |
1771 | void |
1686 | loop_destroy (EV_P) |
1772 | ev_loop_destroy (EV_P) |
1687 | { |
1773 | { |
1688 | int i; |
1774 | int i; |
|
|
1775 | |
|
|
1776 | #if EV_MULTIPLICITY |
|
|
1777 | /* mimic free (0) */ |
|
|
1778 | if (!EV_A) |
|
|
1779 | return; |
|
|
1780 | #endif |
|
|
1781 | |
|
|
1782 | #if EV_CLEANUP_ENABLE |
|
|
1783 | /* queue cleanup watchers (and execute them) */ |
|
|
1784 | if (expect_false (cleanupcnt)) |
|
|
1785 | { |
|
|
1786 | queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); |
|
|
1787 | EV_INVOKE_PENDING; |
|
|
1788 | } |
|
|
1789 | #endif |
|
|
1790 | |
|
|
1791 | #if EV_CHILD_ENABLE |
|
|
1792 | if (ev_is_active (&childev)) |
|
|
1793 | { |
|
|
1794 | ev_ref (EV_A); /* child watcher */ |
|
|
1795 | ev_signal_stop (EV_A_ &childev); |
|
|
1796 | } |
|
|
1797 | #endif |
1689 | |
1798 | |
1690 | if (ev_is_active (&pipe_w)) |
1799 | if (ev_is_active (&pipe_w)) |
1691 | { |
1800 | { |
1692 | /*ev_ref (EV_A);*/ |
1801 | /*ev_ref (EV_A);*/ |
1693 | /*ev_io_stop (EV_A_ &pipe_w);*/ |
1802 | /*ev_io_stop (EV_A_ &pipe_w);*/ |
… | |
… | |
1715 | #endif |
1824 | #endif |
1716 | |
1825 | |
1717 | if (backend_fd >= 0) |
1826 | if (backend_fd >= 0) |
1718 | close (backend_fd); |
1827 | close (backend_fd); |
1719 | |
1828 | |
|
|
1829 | #if EV_USE_IOCP |
|
|
1830 | if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); |
|
|
1831 | #endif |
1720 | #if EV_USE_PORT |
1832 | #if EV_USE_PORT |
1721 | if (backend == EVBACKEND_PORT ) port_destroy (EV_A); |
1833 | if (backend == EVBACKEND_PORT ) port_destroy (EV_A); |
1722 | #endif |
1834 | #endif |
1723 | #if EV_USE_KQUEUE |
1835 | #if EV_USE_KQUEUE |
1724 | if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); |
1836 | if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); |
… | |
… | |
1751 | array_free (periodic, EMPTY); |
1863 | array_free (periodic, EMPTY); |
1752 | #endif |
1864 | #endif |
1753 | #if EV_FORK_ENABLE |
1865 | #if EV_FORK_ENABLE |
1754 | array_free (fork, EMPTY); |
1866 | array_free (fork, EMPTY); |
1755 | #endif |
1867 | #endif |
|
|
1868 | #if EV_CLEANUP_ENABLE |
|
|
1869 | array_free (cleanup, EMPTY); |
|
|
1870 | #endif |
1756 | array_free (prepare, EMPTY); |
1871 | array_free (prepare, EMPTY); |
1757 | array_free (check, EMPTY); |
1872 | array_free (check, EMPTY); |
1758 | #if EV_ASYNC_ENABLE |
1873 | #if EV_ASYNC_ENABLE |
1759 | array_free (async, EMPTY); |
1874 | array_free (async, EMPTY); |
1760 | #endif |
1875 | #endif |
1761 | |
1876 | |
1762 | backend = 0; |
1877 | backend = 0; |
|
|
1878 | |
|
|
1879 | #if EV_MULTIPLICITY |
|
|
1880 | if (ev_is_default_loop (EV_A)) |
|
|
1881 | #endif |
|
|
1882 | ev_default_loop_ptr = 0; |
|
|
1883 | #if EV_MULTIPLICITY |
|
|
1884 | else |
|
|
1885 | ev_free (EV_A); |
|
|
1886 | #endif |
1763 | } |
1887 | } |
1764 | |
1888 | |
1765 | #if EV_USE_INOTIFY |
1889 | #if EV_USE_INOTIFY |
1766 | inline_size void infy_fork (EV_P); |
1890 | inline_size void infy_fork (EV_P); |
1767 | #endif |
1891 | #endif |
… | |
… | |
1826 | loop_init (EV_A_ flags); |
1950 | loop_init (EV_A_ flags); |
1827 | |
1951 | |
1828 | if (ev_backend (EV_A)) |
1952 | if (ev_backend (EV_A)) |
1829 | return EV_A; |
1953 | return EV_A; |
1830 | |
1954 | |
|
|
1955 | ev_free (EV_A); |
1831 | return 0; |
1956 | return 0; |
1832 | } |
1957 | } |
1833 | |
1958 | |
1834 | void |
|
|
1835 | ev_loop_destroy (EV_P) |
|
|
1836 | { |
|
|
1837 | loop_destroy (EV_A); |
|
|
1838 | ev_free (loop); |
|
|
1839 | } |
|
|
1840 | |
|
|
1841 | void |
|
|
1842 | ev_loop_fork (EV_P) |
|
|
1843 | { |
|
|
1844 | postfork = 1; /* must be in line with ev_default_fork */ |
|
|
1845 | } |
|
|
1846 | #endif /* multiplicity */ |
1959 | #endif /* multiplicity */ |
1847 | |
1960 | |
1848 | #if EV_VERIFY |
1961 | #if EV_VERIFY |
1849 | static void noinline |
1962 | static void noinline |
1850 | verify_watcher (EV_P_ W w) |
1963 | verify_watcher (EV_P_ W w) |
… | |
… | |
1925 | #if EV_FORK_ENABLE |
2038 | #if EV_FORK_ENABLE |
1926 | assert (forkmax >= forkcnt); |
2039 | assert (forkmax >= forkcnt); |
1927 | array_verify (EV_A_ (W *)forks, forkcnt); |
2040 | array_verify (EV_A_ (W *)forks, forkcnt); |
1928 | #endif |
2041 | #endif |
1929 | |
2042 | |
|
|
2043 | #if EV_CLEANUP_ENABLE |
|
|
2044 | assert (cleanupmax >= cleanupcnt); |
|
|
2045 | array_verify (EV_A_ (W *)cleanups, cleanupcnt); |
|
|
2046 | #endif |
|
|
2047 | |
1930 | #if EV_ASYNC_ENABLE |
2048 | #if EV_ASYNC_ENABLE |
1931 | assert (asyncmax >= asynccnt); |
2049 | assert (asyncmax >= asynccnt); |
1932 | array_verify (EV_A_ (W *)asyncs, asynccnt); |
2050 | array_verify (EV_A_ (W *)asyncs, asynccnt); |
1933 | #endif |
2051 | #endif |
1934 | |
2052 | |
… | |
… | |
1952 | } |
2070 | } |
1953 | #endif |
2071 | #endif |
1954 | |
2072 | |
1955 | #if EV_MULTIPLICITY |
2073 | #if EV_MULTIPLICITY |
1956 | struct ev_loop * |
2074 | struct ev_loop * |
1957 | ev_default_loop_init (unsigned int flags) |
|
|
1958 | #else |
2075 | #else |
1959 | int |
2076 | int |
|
|
2077 | #endif |
1960 | ev_default_loop (unsigned int flags) |
2078 | ev_default_loop (unsigned int flags) |
1961 | #endif |
|
|
1962 | { |
2079 | { |
1963 | if (!ev_default_loop_ptr) |
2080 | if (!ev_default_loop_ptr) |
1964 | { |
2081 | { |
1965 | #if EV_MULTIPLICITY |
2082 | #if EV_MULTIPLICITY |
1966 | EV_P = ev_default_loop_ptr = &default_loop_struct; |
2083 | EV_P = ev_default_loop_ptr = &default_loop_struct; |
… | |
… | |
1985 | |
2102 | |
1986 | return ev_default_loop_ptr; |
2103 | return ev_default_loop_ptr; |
1987 | } |
2104 | } |
1988 | |
2105 | |
1989 | void |
2106 | void |
1990 | ev_default_destroy (void) |
2107 | ev_loop_fork (EV_P) |
1991 | { |
2108 | { |
1992 | #if EV_MULTIPLICITY |
|
|
1993 | EV_P = ev_default_loop_ptr; |
|
|
1994 | #endif |
|
|
1995 | |
|
|
1996 | ev_default_loop_ptr = 0; |
|
|
1997 | |
|
|
1998 | #if EV_CHILD_ENABLE |
|
|
1999 | ev_ref (EV_A); /* child watcher */ |
|
|
2000 | ev_signal_stop (EV_A_ &childev); |
|
|
2001 | #endif |
|
|
2002 | |
|
|
2003 | loop_destroy (EV_A); |
|
|
2004 | } |
|
|
2005 | |
|
|
2006 | void |
|
|
2007 | ev_default_fork (void) |
|
|
2008 | { |
|
|
2009 | #if EV_MULTIPLICITY |
|
|
2010 | EV_P = ev_default_loop_ptr; |
|
|
2011 | #endif |
|
|
2012 | |
|
|
2013 | postfork = 1; /* must be in line with ev_loop_fork */ |
2109 | postfork = 1; /* must be in line with ev_default_fork */ |
2014 | } |
2110 | } |
2015 | |
2111 | |
2016 | /*****************************************************************************/ |
2112 | /*****************************************************************************/ |
2017 | |
2113 | |
2018 | void |
2114 | void |
… | |
… | |
2040 | |
2136 | |
2041 | for (pri = NUMPRI; pri--; ) |
2137 | for (pri = NUMPRI; pri--; ) |
2042 | while (pendingcnt [pri]) |
2138 | while (pendingcnt [pri]) |
2043 | { |
2139 | { |
2044 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
2140 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
2045 | |
|
|
2046 | /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/ |
|
|
2047 | /* ^ this is no longer true, as pending_w could be here */ |
|
|
2048 | |
2141 | |
2049 | p->w->pending = 0; |
2142 | p->w->pending = 0; |
2050 | EV_CB_INVOKE (p->w, p->events); |
2143 | EV_CB_INVOKE (p->w, p->events); |
2051 | EV_FREQUENT_CHECK; |
2144 | EV_FREQUENT_CHECK; |
2052 | } |
2145 | } |
… | |
… | |
2114 | feed_reverse_done (EV_A_ EV_TIMER); |
2207 | feed_reverse_done (EV_A_ EV_TIMER); |
2115 | } |
2208 | } |
2116 | } |
2209 | } |
2117 | |
2210 | |
2118 | #if EV_PERIODIC_ENABLE |
2211 | #if EV_PERIODIC_ENABLE |
|
|
2212 | |
|
|
2213 | inline_speed void |
|
|
2214 | periodic_recalc (EV_P_ ev_periodic *w) |
|
|
2215 | { |
|
|
2216 | /* TODO: use slow but potentially more correct incremental algo, */ |
|
|
2217 | /* also do not rely on ceil */ |
|
|
2218 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
|
|
2219 | } |
|
|
2220 | |
2119 | /* make periodics pending */ |
2221 | /* make periodics pending */ |
2120 | inline_size void |
2222 | inline_size void |
2121 | periodics_reify (EV_P) |
2223 | periodics_reify (EV_P) |
2122 | { |
2224 | { |
2123 | EV_FREQUENT_CHECK; |
2225 | EV_FREQUENT_CHECK; |
… | |
… | |
2142 | ANHE_at_cache (periodics [HEAP0]); |
2244 | ANHE_at_cache (periodics [HEAP0]); |
2143 | downheap (periodics, periodiccnt, HEAP0); |
2245 | downheap (periodics, periodiccnt, HEAP0); |
2144 | } |
2246 | } |
2145 | else if (w->interval) |
2247 | else if (w->interval) |
2146 | { |
2248 | { |
2147 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
2249 | periodic_recalc (EV_A_ w); |
|
|
2250 | |
2148 | /* if next trigger time is not sufficiently in the future, put it there */ |
2251 | /* if next trigger time is not sufficiently in the future, put it there */ |
2149 | /* this might happen because of floating point inexactness */ |
2252 | /* this might happen because of floating point inexactness */ |
2150 | if (ev_at (w) - ev_rt_now < TIME_EPSILON) |
2253 | if (ev_at (w) - ev_rt_now < TIME_EPSILON) |
2151 | { |
2254 | { |
2152 | ev_at (w) += w->interval; |
2255 | ev_at (w) += w->interval; |
… | |
… | |
2186 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); |
2289 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); |
2187 | |
2290 | |
2188 | if (w->reschedule_cb) |
2291 | if (w->reschedule_cb) |
2189 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
2292 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
2190 | else if (w->interval) |
2293 | else if (w->interval) |
2191 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
2294 | periodic_recalc (EV_A_ w); |
2192 | |
2295 | |
2193 | ANHE_at_cache (periodics [i]); |
2296 | ANHE_at_cache (periodics [i]); |
2194 | } |
2297 | } |
2195 | |
2298 | |
2196 | reheap (periodics, periodiccnt); |
2299 | reheap (periodics, periodiccnt); |
… | |
… | |
2688 | if (w->reschedule_cb) |
2791 | if (w->reschedule_cb) |
2689 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
2792 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
2690 | else if (w->interval) |
2793 | else if (w->interval) |
2691 | { |
2794 | { |
2692 | assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); |
2795 | assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); |
2693 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
2796 | periodic_recalc (EV_A_ w); |
2694 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
|
|
2695 | } |
2797 | } |
2696 | else |
2798 | else |
2697 | ev_at (w) = w->offset; |
2799 | ev_at (w) = w->offset; |
2698 | |
2800 | |
2699 | EV_FREQUENT_CHECK; |
2801 | EV_FREQUENT_CHECK; |
… | |
… | |
2820 | sa.sa_handler = ev_sighandler; |
2922 | sa.sa_handler = ev_sighandler; |
2821 | sigfillset (&sa.sa_mask); |
2923 | sigfillset (&sa.sa_mask); |
2822 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
2924 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
2823 | sigaction (w->signum, &sa, 0); |
2925 | sigaction (w->signum, &sa, 0); |
2824 | |
2926 | |
|
|
2927 | if (origflags & EVFLAG_NOSIGMASK) |
|
|
2928 | { |
2825 | sigemptyset (&sa.sa_mask); |
2929 | sigemptyset (&sa.sa_mask); |
2826 | sigaddset (&sa.sa_mask, w->signum); |
2930 | sigaddset (&sa.sa_mask, w->signum); |
2827 | sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); |
2931 | sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); |
|
|
2932 | } |
2828 | #endif |
2933 | #endif |
2829 | } |
2934 | } |
2830 | |
2935 | |
2831 | EV_FREQUENT_CHECK; |
2936 | EV_FREQUENT_CHECK; |
2832 | } |
2937 | } |
… | |
… | |
2973 | if (!pend || pend == path) |
3078 | if (!pend || pend == path) |
2974 | break; |
3079 | break; |
2975 | |
3080 | |
2976 | *pend = 0; |
3081 | *pend = 0; |
2977 | w->wd = inotify_add_watch (fs_fd, path, mask); |
3082 | w->wd = inotify_add_watch (fs_fd, path, mask); |
2978 | } |
3083 | } |
2979 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
3084 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
2980 | } |
3085 | } |
2981 | } |
3086 | } |
2982 | |
3087 | |
2983 | if (w->wd >= 0) |
3088 | if (w->wd >= 0) |
… | |
… | |
3048 | { |
3153 | { |
3049 | struct inotify_event *ev = (struct inotify_event *)(buf + ofs); |
3154 | struct inotify_event *ev = (struct inotify_event *)(buf + ofs); |
3050 | infy_wd (EV_A_ ev->wd, ev->wd, ev); |
3155 | infy_wd (EV_A_ ev->wd, ev->wd, ev); |
3051 | ofs += sizeof (struct inotify_event) + ev->len; |
3156 | ofs += sizeof (struct inotify_event) + ev->len; |
3052 | } |
3157 | } |
3053 | } |
|
|
3054 | |
|
|
3055 | inline_size unsigned int |
|
|
3056 | ev_linux_version (void) |
|
|
3057 | { |
|
|
3058 | struct utsname buf; |
|
|
3059 | unsigned int v; |
|
|
3060 | int i; |
|
|
3061 | char *p = buf.release; |
|
|
3062 | |
|
|
3063 | if (uname (&buf)) |
|
|
3064 | return 0; |
|
|
3065 | |
|
|
3066 | for (i = 3+1; --i; ) |
|
|
3067 | { |
|
|
3068 | unsigned int c = 0; |
|
|
3069 | |
|
|
3070 | for (;;) |
|
|
3071 | { |
|
|
3072 | if (*p >= '0' && *p <= '9') |
|
|
3073 | c = c * 10 + *p++ - '0'; |
|
|
3074 | else |
|
|
3075 | { |
|
|
3076 | p += *p == '.'; |
|
|
3077 | break; |
|
|
3078 | } |
|
|
3079 | } |
|
|
3080 | |
|
|
3081 | v = (v << 8) | c; |
|
|
3082 | } |
|
|
3083 | |
|
|
3084 | return v; |
|
|
3085 | } |
3158 | } |
3086 | |
3159 | |
3087 | inline_size void |
3160 | inline_size void |
3088 | ev_check_2625 (EV_P) |
3161 | ev_check_2625 (EV_P) |
3089 | { |
3162 | { |
… | |
… | |
3556 | |
3629 | |
3557 | EV_FREQUENT_CHECK; |
3630 | EV_FREQUENT_CHECK; |
3558 | } |
3631 | } |
3559 | #endif |
3632 | #endif |
3560 | |
3633 | |
|
|
3634 | #if EV_CLEANUP_ENABLE |
|
|
3635 | void |
|
|
3636 | ev_cleanup_start (EV_P_ ev_cleanup *w) |
|
|
3637 | { |
|
|
3638 | if (expect_false (ev_is_active (w))) |
|
|
3639 | return; |
|
|
3640 | |
|
|
3641 | EV_FREQUENT_CHECK; |
|
|
3642 | |
|
|
3643 | ev_start (EV_A_ (W)w, ++cleanupcnt); |
|
|
3644 | array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); |
|
|
3645 | cleanups [cleanupcnt - 1] = w; |
|
|
3646 | |
|
|
3647 | /* cleanup watchers should never keep a refcount on the loop */ |
|
|
3648 | ev_unref (EV_A); |
|
|
3649 | EV_FREQUENT_CHECK; |
|
|
3650 | } |
|
|
3651 | |
|
|
3652 | void |
|
|
3653 | ev_cleanup_stop (EV_P_ ev_cleanup *w) |
|
|
3654 | { |
|
|
3655 | clear_pending (EV_A_ (W)w); |
|
|
3656 | if (expect_false (!ev_is_active (w))) |
|
|
3657 | return; |
|
|
3658 | |
|
|
3659 | EV_FREQUENT_CHECK; |
|
|
3660 | ev_ref (EV_A); |
|
|
3661 | |
|
|
3662 | { |
|
|
3663 | int active = ev_active (w); |
|
|
3664 | |
|
|
3665 | cleanups [active - 1] = cleanups [--cleanupcnt]; |
|
|
3666 | ev_active (cleanups [active - 1]) = active; |
|
|
3667 | } |
|
|
3668 | |
|
|
3669 | ev_stop (EV_A_ (W)w); |
|
|
3670 | |
|
|
3671 | EV_FREQUENT_CHECK; |
|
|
3672 | } |
|
|
3673 | #endif |
|
|
3674 | |
3561 | #if EV_ASYNC_ENABLE |
3675 | #if EV_ASYNC_ENABLE |
3562 | void |
3676 | void |
3563 | ev_async_start (EV_P_ ev_async *w) |
3677 | ev_async_start (EV_P_ ev_async *w) |
3564 | { |
3678 | { |
3565 | if (expect_false (ev_is_active (w))) |
3679 | if (expect_false (ev_is_active (w))) |