1 | /* |
1 | /* |
2 | * libev event processing core, watcher management |
2 | * libev event processing core, watcher management |
3 | * |
3 | * |
4 | * Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de> |
4 | * Copyright (c) 2007,2008,2009 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 | * |
… | |
… | |
47 | # include EV_CONFIG_H |
47 | # include EV_CONFIG_H |
48 | # else |
48 | # else |
49 | # include "config.h" |
49 | # include "config.h" |
50 | # endif |
50 | # endif |
51 | |
51 | |
|
|
52 | # if HAVE_CLOCK_SYSCALL |
|
|
53 | # ifndef EV_USE_CLOCK_SYSCALL |
|
|
54 | # define EV_USE_CLOCK_SYSCALL 1 |
|
|
55 | # ifndef EV_USE_REALTIME |
|
|
56 | # define EV_USE_REALTIME 0 |
|
|
57 | # endif |
|
|
58 | # ifndef EV_USE_MONOTONIC |
|
|
59 | # define EV_USE_MONOTONIC 1 |
|
|
60 | # endif |
|
|
61 | # endif |
|
|
62 | # endif |
|
|
63 | |
52 | # if HAVE_CLOCK_GETTIME |
64 | # if HAVE_CLOCK_GETTIME |
53 | # ifndef EV_USE_MONOTONIC |
65 | # ifndef EV_USE_MONOTONIC |
54 | # define EV_USE_MONOTONIC 1 |
66 | # define EV_USE_MONOTONIC 1 |
55 | # endif |
67 | # endif |
56 | # ifndef EV_USE_REALTIME |
68 | # ifndef EV_USE_REALTIME |
… | |
… | |
164 | # endif |
176 | # endif |
165 | #endif |
177 | #endif |
166 | |
178 | |
167 | /* this block tries to deduce configuration from header-defined symbols and defaults */ |
179 | /* this block tries to deduce configuration from header-defined symbols and defaults */ |
168 | |
180 | |
|
|
181 | #ifndef EV_USE_CLOCK_SYSCALL |
|
|
182 | # if __linux && __GLIBC__ >= 2 |
|
|
183 | # define EV_USE_CLOCK_SYSCALL 1 |
|
|
184 | # else |
|
|
185 | # define EV_USE_CLOCK_SYSCALL 0 |
|
|
186 | # endif |
|
|
187 | #endif |
|
|
188 | |
169 | #ifndef EV_USE_MONOTONIC |
189 | #ifndef EV_USE_MONOTONIC |
170 | # if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 |
190 | # if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 |
171 | # define EV_USE_MONOTONIC 1 |
191 | # define EV_USE_MONOTONIC 1 |
172 | # else |
192 | # else |
173 | # define EV_USE_MONOTONIC 0 |
193 | # define EV_USE_MONOTONIC 0 |
… | |
… | |
287 | # endif |
307 | # endif |
288 | #endif |
308 | #endif |
289 | |
309 | |
290 | #if EV_USE_INOTIFY |
310 | #if EV_USE_INOTIFY |
291 | # include <sys/utsname.h> |
311 | # include <sys/utsname.h> |
|
|
312 | # include <sys/statfs.h> |
292 | # include <sys/inotify.h> |
313 | # include <sys/inotify.h> |
293 | /* some very old inotify.h headers don't have IN_DONT_FOLLOW */ |
314 | /* some very old inotify.h headers don't have IN_DONT_FOLLOW */ |
294 | # ifndef IN_DONT_FOLLOW |
315 | # ifndef IN_DONT_FOLLOW |
295 | # undef EV_USE_INOTIFY |
316 | # undef EV_USE_INOTIFY |
296 | # define EV_USE_INOTIFY 0 |
317 | # define EV_USE_INOTIFY 0 |
297 | # endif |
318 | # endif |
298 | #endif |
319 | #endif |
299 | |
320 | |
300 | #if EV_SELECT_IS_WINSOCKET |
321 | #if EV_SELECT_IS_WINSOCKET |
301 | # include <winsock.h> |
322 | # include <winsock.h> |
|
|
323 | #endif |
|
|
324 | |
|
|
325 | /* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ |
|
|
326 | /* which makes programs even slower. might work on other unices, too. */ |
|
|
327 | #if EV_USE_CLOCK_SYSCALL |
|
|
328 | # include <syscall.h> |
|
|
329 | # define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) |
|
|
330 | # undef EV_USE_MONOTONIC |
|
|
331 | # define EV_USE_MONOTONIC 1 |
302 | #endif |
332 | #endif |
303 | |
333 | |
304 | #if EV_USE_EVENTFD |
334 | #if EV_USE_EVENTFD |
305 | /* our minimum requirement is glibc 2.7 which has the stub, but not the header */ |
335 | /* our minimum requirement is glibc 2.7 which has the stub, but not the header */ |
306 | # include <stdint.h> |
336 | # include <stdint.h> |
… | |
… | |
388 | { |
418 | { |
389 | syserr_cb = cb; |
419 | syserr_cb = cb; |
390 | } |
420 | } |
391 | |
421 | |
392 | static void noinline |
422 | static void noinline |
393 | syserr (const char *msg) |
423 | ev_syserr (const char *msg) |
394 | { |
424 | { |
395 | if (!msg) |
425 | if (!msg) |
396 | msg = "(libev) system error"; |
426 | msg = "(libev) system error"; |
397 | |
427 | |
398 | if (syserr_cb) |
428 | if (syserr_cb) |
… | |
… | |
450 | { |
480 | { |
451 | WL head; |
481 | WL head; |
452 | unsigned char events; |
482 | unsigned char events; |
453 | unsigned char reify; |
483 | unsigned char reify; |
454 | unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ |
484 | unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ |
455 | unsigned char unused; /* currently unused padding */ |
485 | unsigned char unused; |
|
|
486 | #if EV_USE_EPOLL |
|
|
487 | unsigned int egen; /* generation counter to counter epoll bugs */ |
|
|
488 | #endif |
456 | #if EV_SELECT_IS_WINSOCKET |
489 | #if EV_SELECT_IS_WINSOCKET |
457 | SOCKET handle; |
490 | SOCKET handle; |
458 | #endif |
491 | #endif |
459 | } ANFD; |
492 | } ANFD; |
460 | |
493 | |
… | |
… | |
715 | #ifdef EV_FD_TO_WIN32_HANDLE |
748 | #ifdef EV_FD_TO_WIN32_HANDLE |
716 | anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); |
749 | anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); |
717 | #else |
750 | #else |
718 | anfd->handle = _get_osfhandle (fd); |
751 | anfd->handle = _get_osfhandle (fd); |
719 | #endif |
752 | #endif |
720 | assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); |
753 | assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); |
721 | } |
754 | } |
722 | #endif |
755 | #endif |
723 | |
756 | |
724 | { |
757 | { |
725 | unsigned char o_events = anfd->events; |
758 | unsigned char o_events = anfd->events; |
… | |
… | |
806 | |
839 | |
807 | for (fd = 0; fd < anfdmax; ++fd) |
840 | for (fd = 0; fd < anfdmax; ++fd) |
808 | if (anfds [fd].events) |
841 | if (anfds [fd].events) |
809 | { |
842 | { |
810 | anfds [fd].events = 0; |
843 | anfds [fd].events = 0; |
|
|
844 | anfds [fd].emask = 0; |
811 | fd_change (EV_A_ fd, EV_IOFDSET | 1); |
845 | fd_change (EV_A_ fd, EV_IOFDSET | 1); |
812 | } |
846 | } |
813 | } |
847 | } |
814 | |
848 | |
815 | /*****************************************************************************/ |
849 | /*****************************************************************************/ |
… | |
… | |
997 | } |
1031 | } |
998 | else |
1032 | else |
999 | #endif |
1033 | #endif |
1000 | { |
1034 | { |
1001 | while (pipe (evpipe)) |
1035 | while (pipe (evpipe)) |
1002 | syserr ("(libev) error creating signal/async pipe"); |
1036 | ev_syserr ("(libev) error creating signal/async pipe"); |
1003 | |
1037 | |
1004 | fd_intern (evpipe [0]); |
1038 | fd_intern (evpipe [0]); |
1005 | fd_intern (evpipe [1]); |
1039 | fd_intern (evpipe [1]); |
1006 | ev_io_set (&pipeev, evpipe [0], EV_READ); |
1040 | ev_io_set (&pipeev, evpipe [0], EV_READ); |
1007 | } |
1041 | } |
… | |
… | |
1097 | ev_feed_signal_event (EV_P_ int signum) |
1131 | ev_feed_signal_event (EV_P_ int signum) |
1098 | { |
1132 | { |
1099 | WL w; |
1133 | WL w; |
1100 | |
1134 | |
1101 | #if EV_MULTIPLICITY |
1135 | #if EV_MULTIPLICITY |
1102 | assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); |
1136 | assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); |
1103 | #endif |
1137 | #endif |
1104 | |
1138 | |
1105 | --signum; |
1139 | --signum; |
1106 | |
1140 | |
1107 | if (signum < 0 || signum >= signalmax) |
1141 | if (signum < 0 || signum >= signalmax) |
… | |
… | |
1236 | /* kqueue is borked on everything but netbsd apparently */ |
1270 | /* kqueue is borked on everything but netbsd apparently */ |
1237 | /* it usually doesn't work correctly on anything but sockets and pipes */ |
1271 | /* it usually doesn't work correctly on anything but sockets and pipes */ |
1238 | flags &= ~EVBACKEND_KQUEUE; |
1272 | flags &= ~EVBACKEND_KQUEUE; |
1239 | #endif |
1273 | #endif |
1240 | #ifdef __APPLE__ |
1274 | #ifdef __APPLE__ |
1241 | // flags &= ~EVBACKEND_KQUEUE; for documentation |
1275 | /* only select works correctly on that "unix-certified" platform */ |
1242 | flags &= ~EVBACKEND_POLL; |
1276 | flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ |
|
|
1277 | flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ |
1243 | #endif |
1278 | #endif |
1244 | |
1279 | |
1245 | return flags; |
1280 | return flags; |
1246 | } |
1281 | } |
1247 | |
1282 | |
… | |
… | |
1500 | |
1535 | |
1501 | #if EV_VERIFY |
1536 | #if EV_VERIFY |
1502 | static void noinline |
1537 | static void noinline |
1503 | verify_watcher (EV_P_ W w) |
1538 | verify_watcher (EV_P_ W w) |
1504 | { |
1539 | { |
1505 | assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); |
1540 | assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); |
1506 | |
1541 | |
1507 | if (w->pending) |
1542 | if (w->pending) |
1508 | assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); |
1543 | assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); |
1509 | } |
1544 | } |
1510 | |
1545 | |
1511 | static void noinline |
1546 | static void noinline |
1512 | verify_heap (EV_P_ ANHE *heap, int N) |
1547 | verify_heap (EV_P_ ANHE *heap, int N) |
1513 | { |
1548 | { |
1514 | int i; |
1549 | int i; |
1515 | |
1550 | |
1516 | for (i = HEAP0; i < N + HEAP0; ++i) |
1551 | for (i = HEAP0; i < N + HEAP0; ++i) |
1517 | { |
1552 | { |
1518 | assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); |
1553 | assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); |
1519 | assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i]))); |
1554 | assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i]))); |
1520 | assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i])))); |
1555 | assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i])))); |
1521 | |
1556 | |
1522 | verify_watcher (EV_A_ (W)ANHE_w (heap [i])); |
1557 | verify_watcher (EV_A_ (W)ANHE_w (heap [i])); |
1523 | } |
1558 | } |
1524 | } |
1559 | } |
1525 | |
1560 | |
1526 | static void noinline |
1561 | static void noinline |
1527 | array_verify (EV_P_ W *ws, int cnt) |
1562 | array_verify (EV_P_ W *ws, int cnt) |
1528 | { |
1563 | { |
1529 | while (cnt--) |
1564 | while (cnt--) |
1530 | { |
1565 | { |
1531 | assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); |
1566 | assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); |
1532 | verify_watcher (EV_A_ ws [cnt]); |
1567 | verify_watcher (EV_A_ ws [cnt]); |
1533 | } |
1568 | } |
1534 | } |
1569 | } |
1535 | #endif |
1570 | #endif |
1536 | |
1571 | |
… | |
… | |
1543 | |
1578 | |
1544 | assert (activecnt >= -1); |
1579 | assert (activecnt >= -1); |
1545 | |
1580 | |
1546 | assert (fdchangemax >= fdchangecnt); |
1581 | assert (fdchangemax >= fdchangecnt); |
1547 | for (i = 0; i < fdchangecnt; ++i) |
1582 | for (i = 0; i < fdchangecnt; ++i) |
1548 | assert (("negative fd in fdchanges", fdchanges [i] >= 0)); |
1583 | assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); |
1549 | |
1584 | |
1550 | assert (anfdmax >= 0); |
1585 | assert (anfdmax >= 0); |
1551 | for (i = 0; i < anfdmax; ++i) |
1586 | for (i = 0; i < anfdmax; ++i) |
1552 | for (w = anfds [i].head; w; w = w->next) |
1587 | for (w = anfds [i].head; w; w = w->next) |
1553 | { |
1588 | { |
1554 | verify_watcher (EV_A_ (W)w); |
1589 | verify_watcher (EV_A_ (W)w); |
1555 | assert (("inactive fd watcher on anfd list", ev_active (w) == 1)); |
1590 | assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); |
1556 | assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); |
1591 | assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); |
1557 | } |
1592 | } |
1558 | |
1593 | |
1559 | assert (timermax >= timercnt); |
1594 | assert (timermax >= timercnt); |
1560 | verify_heap (EV_A_ timers, timercnt); |
1595 | verify_heap (EV_A_ timers, timercnt); |
1561 | |
1596 | |
… | |
… | |
1655 | { |
1690 | { |
1656 | #if EV_MULTIPLICITY |
1691 | #if EV_MULTIPLICITY |
1657 | struct ev_loop *loop = ev_default_loop_ptr; |
1692 | struct ev_loop *loop = ev_default_loop_ptr; |
1658 | #endif |
1693 | #endif |
1659 | |
1694 | |
1660 | if (backend) |
|
|
1661 | postfork = 1; /* must be in line with ev_loop_fork */ |
1695 | postfork = 1; /* must be in line with ev_loop_fork */ |
1662 | } |
1696 | } |
1663 | |
1697 | |
1664 | /*****************************************************************************/ |
1698 | /*****************************************************************************/ |
1665 | |
1699 | |
1666 | void |
1700 | void |
… | |
… | |
1679 | { |
1713 | { |
1680 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
1714 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
1681 | |
1715 | |
1682 | if (expect_true (p->w)) |
1716 | if (expect_true (p->w)) |
1683 | { |
1717 | { |
1684 | /*assert (("non-pending watcher on pending list", p->w->pending));*/ |
1718 | /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/ |
1685 | |
1719 | |
1686 | p->w->pending = 0; |
1720 | p->w->pending = 0; |
1687 | EV_CB_INVOKE (p->w, p->events); |
1721 | EV_CB_INVOKE (p->w, p->events); |
1688 | EV_FREQUENT_CHECK; |
1722 | EV_FREQUENT_CHECK; |
1689 | } |
1723 | } |
… | |
… | |
1720 | |
1754 | |
1721 | while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) |
1755 | while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) |
1722 | { |
1756 | { |
1723 | ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); |
1757 | ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); |
1724 | |
1758 | |
1725 | /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/ |
1759 | /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/ |
1726 | |
1760 | |
1727 | /* first reschedule or stop timer */ |
1761 | /* first reschedule or stop timer */ |
1728 | if (w->repeat) |
1762 | if (w->repeat) |
1729 | { |
1763 | { |
1730 | ev_at (w) += w->repeat; |
1764 | ev_at (w) += w->repeat; |
1731 | if (ev_at (w) < mn_now) |
1765 | if (ev_at (w) < mn_now) |
1732 | ev_at (w) = mn_now; |
1766 | ev_at (w) = mn_now; |
1733 | |
1767 | |
1734 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
1768 | assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
1735 | |
1769 | |
1736 | ANHE_at_cache (timers [HEAP0]); |
1770 | ANHE_at_cache (timers [HEAP0]); |
1737 | downheap (timers, timercnt, HEAP0); |
1771 | downheap (timers, timercnt, HEAP0); |
1738 | } |
1772 | } |
1739 | else |
1773 | else |
… | |
… | |
1752 | |
1786 | |
1753 | while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) |
1787 | while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) |
1754 | { |
1788 | { |
1755 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); |
1789 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); |
1756 | |
1790 | |
1757 | /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ |
1791 | /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ |
1758 | |
1792 | |
1759 | /* first reschedule or stop timer */ |
1793 | /* first reschedule or stop timer */ |
1760 | if (w->reschedule_cb) |
1794 | if (w->reschedule_cb) |
1761 | { |
1795 | { |
1762 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
1796 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
1763 | |
1797 | |
1764 | assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); |
1798 | assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); |
1765 | |
1799 | |
1766 | ANHE_at_cache (periodics [HEAP0]); |
1800 | ANHE_at_cache (periodics [HEAP0]); |
1767 | downheap (periodics, periodiccnt, HEAP0); |
1801 | downheap (periodics, periodiccnt, HEAP0); |
1768 | } |
1802 | } |
1769 | else if (w->interval) |
1803 | else if (w->interval) |
… | |
… | |
2120 | int fd = w->fd; |
2154 | int fd = w->fd; |
2121 | |
2155 | |
2122 | if (expect_false (ev_is_active (w))) |
2156 | if (expect_false (ev_is_active (w))) |
2123 | return; |
2157 | return; |
2124 | |
2158 | |
2125 | assert (("ev_io_start called with negative fd", fd >= 0)); |
2159 | assert (("libev: ev_io_start called with negative fd", fd >= 0)); |
2126 | assert (("ev_io start called with illegal event mask", !(w->events & ~(EV_IOFDSET | EV_READ | EV_WRITE)))); |
2160 | assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV_IOFDSET | EV_READ | EV_WRITE)))); |
2127 | |
2161 | |
2128 | EV_FREQUENT_CHECK; |
2162 | EV_FREQUENT_CHECK; |
2129 | |
2163 | |
2130 | ev_start (EV_A_ (W)w, 1); |
2164 | ev_start (EV_A_ (W)w, 1); |
2131 | array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); |
2165 | array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); |
… | |
… | |
2142 | { |
2176 | { |
2143 | clear_pending (EV_A_ (W)w); |
2177 | clear_pending (EV_A_ (W)w); |
2144 | if (expect_false (!ev_is_active (w))) |
2178 | if (expect_false (!ev_is_active (w))) |
2145 | return; |
2179 | return; |
2146 | |
2180 | |
2147 | assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); |
2181 | assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); |
2148 | |
2182 | |
2149 | EV_FREQUENT_CHECK; |
2183 | EV_FREQUENT_CHECK; |
2150 | |
2184 | |
2151 | wlist_del (&anfds[w->fd].head, (WL)w); |
2185 | wlist_del (&anfds[w->fd].head, (WL)w); |
2152 | ev_stop (EV_A_ (W)w); |
2186 | ev_stop (EV_A_ (W)w); |
… | |
… | |
2162 | if (expect_false (ev_is_active (w))) |
2196 | if (expect_false (ev_is_active (w))) |
2163 | return; |
2197 | return; |
2164 | |
2198 | |
2165 | ev_at (w) += mn_now; |
2199 | ev_at (w) += mn_now; |
2166 | |
2200 | |
2167 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
2201 | assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
2168 | |
2202 | |
2169 | EV_FREQUENT_CHECK; |
2203 | EV_FREQUENT_CHECK; |
2170 | |
2204 | |
2171 | ++timercnt; |
2205 | ++timercnt; |
2172 | ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); |
2206 | ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); |
… | |
… | |
2175 | ANHE_at_cache (timers [ev_active (w)]); |
2209 | ANHE_at_cache (timers [ev_active (w)]); |
2176 | upheap (timers, ev_active (w)); |
2210 | upheap (timers, ev_active (w)); |
2177 | |
2211 | |
2178 | EV_FREQUENT_CHECK; |
2212 | EV_FREQUENT_CHECK; |
2179 | |
2213 | |
2180 | /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ |
2214 | /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ |
2181 | } |
2215 | } |
2182 | |
2216 | |
2183 | void noinline |
2217 | void noinline |
2184 | ev_timer_stop (EV_P_ ev_timer *w) |
2218 | ev_timer_stop (EV_P_ ev_timer *w) |
2185 | { |
2219 | { |
… | |
… | |
2190 | EV_FREQUENT_CHECK; |
2224 | EV_FREQUENT_CHECK; |
2191 | |
2225 | |
2192 | { |
2226 | { |
2193 | int active = ev_active (w); |
2227 | int active = ev_active (w); |
2194 | |
2228 | |
2195 | assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); |
2229 | assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); |
2196 | |
2230 | |
2197 | --timercnt; |
2231 | --timercnt; |
2198 | |
2232 | |
2199 | if (expect_true (active < timercnt + HEAP0)) |
2233 | if (expect_true (active < timercnt + HEAP0)) |
2200 | { |
2234 | { |
… | |
… | |
2244 | |
2278 | |
2245 | if (w->reschedule_cb) |
2279 | if (w->reschedule_cb) |
2246 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
2280 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
2247 | else if (w->interval) |
2281 | else if (w->interval) |
2248 | { |
2282 | { |
2249 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
2283 | assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); |
2250 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
2284 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
2251 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
2285 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
2252 | } |
2286 | } |
2253 | else |
2287 | else |
2254 | ev_at (w) = w->offset; |
2288 | ev_at (w) = w->offset; |
… | |
… | |
2262 | ANHE_at_cache (periodics [ev_active (w)]); |
2296 | ANHE_at_cache (periodics [ev_active (w)]); |
2263 | upheap (periodics, ev_active (w)); |
2297 | upheap (periodics, ev_active (w)); |
2264 | |
2298 | |
2265 | EV_FREQUENT_CHECK; |
2299 | EV_FREQUENT_CHECK; |
2266 | |
2300 | |
2267 | /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ |
2301 | /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ |
2268 | } |
2302 | } |
2269 | |
2303 | |
2270 | void noinline |
2304 | void noinline |
2271 | ev_periodic_stop (EV_P_ ev_periodic *w) |
2305 | ev_periodic_stop (EV_P_ ev_periodic *w) |
2272 | { |
2306 | { |
… | |
… | |
2277 | EV_FREQUENT_CHECK; |
2311 | EV_FREQUENT_CHECK; |
2278 | |
2312 | |
2279 | { |
2313 | { |
2280 | int active = ev_active (w); |
2314 | int active = ev_active (w); |
2281 | |
2315 | |
2282 | assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); |
2316 | assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); |
2283 | |
2317 | |
2284 | --periodiccnt; |
2318 | --periodiccnt; |
2285 | |
2319 | |
2286 | if (expect_true (active < periodiccnt + HEAP0)) |
2320 | if (expect_true (active < periodiccnt + HEAP0)) |
2287 | { |
2321 | { |
… | |
… | |
2310 | |
2344 | |
2311 | void noinline |
2345 | void noinline |
2312 | ev_signal_start (EV_P_ ev_signal *w) |
2346 | ev_signal_start (EV_P_ ev_signal *w) |
2313 | { |
2347 | { |
2314 | #if EV_MULTIPLICITY |
2348 | #if EV_MULTIPLICITY |
2315 | assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
2349 | assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
2316 | #endif |
2350 | #endif |
2317 | if (expect_false (ev_is_active (w))) |
2351 | if (expect_false (ev_is_active (w))) |
2318 | return; |
2352 | return; |
2319 | |
2353 | |
2320 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
2354 | assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); |
2321 | |
2355 | |
2322 | evpipe_init (EV_A); |
2356 | evpipe_init (EV_A); |
2323 | |
2357 | |
2324 | EV_FREQUENT_CHECK; |
2358 | EV_FREQUENT_CHECK; |
2325 | |
2359 | |
… | |
… | |
2376 | |
2410 | |
2377 | void |
2411 | void |
2378 | ev_child_start (EV_P_ ev_child *w) |
2412 | ev_child_start (EV_P_ ev_child *w) |
2379 | { |
2413 | { |
2380 | #if EV_MULTIPLICITY |
2414 | #if EV_MULTIPLICITY |
2381 | assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
2415 | assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
2382 | #endif |
2416 | #endif |
2383 | if (expect_false (ev_is_active (w))) |
2417 | if (expect_false (ev_is_active (w))) |
2384 | return; |
2418 | return; |
2385 | |
2419 | |
2386 | EV_FREQUENT_CHECK; |
2420 | EV_FREQUENT_CHECK; |
… | |
… | |
2411 | # ifdef _WIN32 |
2445 | # ifdef _WIN32 |
2412 | # undef lstat |
2446 | # undef lstat |
2413 | # define lstat(a,b) _stati64 (a,b) |
2447 | # define lstat(a,b) _stati64 (a,b) |
2414 | # endif |
2448 | # endif |
2415 | |
2449 | |
2416 | #define DEF_STAT_INTERVAL 5.0074891 |
2450 | #define DEF_STAT_INTERVAL 5.0074891 |
|
|
2451 | #define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ |
2417 | #define MIN_STAT_INTERVAL 0.1074891 |
2452 | #define MIN_STAT_INTERVAL 0.1074891 |
2418 | |
2453 | |
2419 | static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); |
2454 | static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); |
2420 | |
2455 | |
2421 | #if EV_USE_INOTIFY |
2456 | #if EV_USE_INOTIFY |
2422 | # define EV_INOTIFY_BUFSIZE 8192 |
2457 | # define EV_INOTIFY_BUFSIZE 8192 |
… | |
… | |
2426 | { |
2461 | { |
2427 | w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); |
2462 | w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); |
2428 | |
2463 | |
2429 | if (w->wd < 0) |
2464 | if (w->wd < 0) |
2430 | { |
2465 | { |
|
|
2466 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
2431 | ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ |
2467 | ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ |
2432 | |
2468 | |
2433 | /* monitor some parent directory for speedup hints */ |
2469 | /* monitor some parent directory for speedup hints */ |
2434 | /* note that exceeding the hardcoded limit is not a correctness issue, */ |
2470 | /* note that exceeding the hardcoded path limit is not a correctness issue, */ |
2435 | /* but an efficiency issue only */ |
2471 | /* but an efficiency issue only */ |
2436 | if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) |
2472 | if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) |
2437 | { |
2473 | { |
2438 | char path [4096]; |
2474 | char path [4096]; |
2439 | strcpy (path, w->path); |
2475 | strcpy (path, w->path); |
… | |
… | |
2443 | int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF |
2479 | int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF |
2444 | | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); |
2480 | | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); |
2445 | |
2481 | |
2446 | char *pend = strrchr (path, '/'); |
2482 | char *pend = strrchr (path, '/'); |
2447 | |
2483 | |
2448 | if (!pend) |
2484 | if (!pend || pend == path) |
2449 | break; /* whoops, no '/', complain to your admin */ |
2485 | break; |
2450 | |
2486 | |
2451 | *pend = 0; |
2487 | *pend = 0; |
2452 | w->wd = inotify_add_watch (fs_fd, path, mask); |
2488 | w->wd = inotify_add_watch (fs_fd, path, mask); |
2453 | } |
2489 | } |
2454 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
2490 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
2455 | } |
2491 | } |
2456 | } |
2492 | } |
2457 | else |
|
|
2458 | ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */ |
|
|
2459 | |
2493 | |
2460 | if (w->wd >= 0) |
2494 | if (w->wd >= 0) |
|
|
2495 | { |
2461 | wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); |
2496 | wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); |
|
|
2497 | |
|
|
2498 | /* now local changes will be tracked by inotify, but remote changes won't */ |
|
|
2499 | /* unless the filesystem it known to be local, we therefore still poll */ |
|
|
2500 | /* also do poll on <2.6.25, but with normal frequency */ |
|
|
2501 | struct statfs sfs; |
|
|
2502 | |
|
|
2503 | if (fs_2625 && !statfs (w->path, &sfs)) |
|
|
2504 | if (sfs.f_type == 0x1373 /* devfs */ |
|
|
2505 | || sfs.f_type == 0xEF53 /* ext2/3 */ |
|
|
2506 | || sfs.f_type == 0x3153464a /* jfs */ |
|
|
2507 | || sfs.f_type == 0x52654973 /* reiser3 */ |
|
|
2508 | || sfs.f_type == 0x01021994 /* tempfs */ |
|
|
2509 | || sfs.f_type == 0x58465342 /* xfs */) |
|
|
2510 | return; |
|
|
2511 | |
|
|
2512 | w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL; |
|
|
2513 | ev_timer_again (EV_A_ &w->timer); |
|
|
2514 | } |
2462 | } |
2515 | } |
2463 | |
2516 | |
2464 | static void noinline |
2517 | static void noinline |
2465 | infy_del (EV_P_ ev_stat *w) |
2518 | infy_del (EV_P_ ev_stat *w) |
2466 | { |
2519 | { |
… | |
… | |
2496 | |
2549 | |
2497 | if (w->wd == wd || wd == -1) |
2550 | if (w->wd == wd || wd == -1) |
2498 | { |
2551 | { |
2499 | if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) |
2552 | if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) |
2500 | { |
2553 | { |
|
|
2554 | wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); |
2501 | w->wd = -1; |
2555 | w->wd = -1; |
2502 | infy_add (EV_A_ w); /* re-add, no matter what */ |
2556 | infy_add (EV_A_ w); /* re-add, no matter what */ |
2503 | } |
2557 | } |
2504 | |
2558 | |
2505 | stat_timer_cb (EV_A_ &w->timer, 0); |
2559 | stat_timer_cb (EV_A_ &w->timer, 0); |
… | |
… | |
2519 | for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) |
2573 | for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) |
2520 | infy_wd (EV_A_ ev->wd, ev->wd, ev); |
2574 | infy_wd (EV_A_ ev->wd, ev->wd, ev); |
2521 | } |
2575 | } |
2522 | |
2576 | |
2523 | void inline_size |
2577 | void inline_size |
2524 | infy_init (EV_P) |
2578 | check_2625 (EV_P) |
2525 | { |
2579 | { |
2526 | if (fs_fd != -2) |
|
|
2527 | return; |
|
|
2528 | |
|
|
2529 | /* kernels < 2.6.25 are borked |
2580 | /* kernels < 2.6.25 are borked |
2530 | * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html |
2581 | * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html |
2531 | */ |
2582 | */ |
2532 | { |
|
|
2533 | struct utsname buf; |
2583 | struct utsname buf; |
2534 | int major, minor, micro; |
2584 | int major, minor, micro; |
2535 | |
2585 | |
2536 | fs_fd = -1; |
|
|
2537 | |
|
|
2538 | if (uname (&buf)) |
2586 | if (uname (&buf)) |
2539 | return; |
2587 | return; |
2540 | |
2588 | |
2541 | if (sscanf (buf.release, "%d.%d.%d", &major, &minor, µ) != 3) |
2589 | if (sscanf (buf.release, "%d.%d.%d", &major, &minor, µ) != 3) |
2542 | return; |
2590 | return; |
2543 | |
2591 | |
2544 | if (major < 2 |
2592 | if (major < 2 |
2545 | || (major == 2 && minor < 6) |
2593 | || (major == 2 && minor < 6) |
2546 | || (major == 2 && minor == 6 && micro < 25)) |
2594 | || (major == 2 && minor == 6 && micro < 25)) |
2547 | return; |
2595 | return; |
2548 | } |
2596 | |
|
|
2597 | fs_2625 = 1; |
|
|
2598 | } |
|
|
2599 | |
|
|
2600 | void inline_size |
|
|
2601 | infy_init (EV_P) |
|
|
2602 | { |
|
|
2603 | if (fs_fd != -2) |
|
|
2604 | return; |
|
|
2605 | |
|
|
2606 | fs_fd = -1; |
|
|
2607 | |
|
|
2608 | check_2625 (EV_A); |
2549 | |
2609 | |
2550 | fs_fd = inotify_init (); |
2610 | fs_fd = inotify_init (); |
2551 | |
2611 | |
2552 | if (fs_fd >= 0) |
2612 | if (fs_fd >= 0) |
2553 | { |
2613 | { |
… | |
… | |
2581 | w->wd = -1; |
2641 | w->wd = -1; |
2582 | |
2642 | |
2583 | if (fs_fd >= 0) |
2643 | if (fs_fd >= 0) |
2584 | infy_add (EV_A_ w); /* re-add, no matter what */ |
2644 | infy_add (EV_A_ w); /* re-add, no matter what */ |
2585 | else |
2645 | else |
2586 | ev_timer_start (EV_A_ &w->timer); |
2646 | ev_timer_again (EV_A_ &w->timer); |
2587 | } |
2647 | } |
2588 | } |
2648 | } |
2589 | } |
2649 | } |
2590 | |
2650 | |
2591 | #endif |
2651 | #endif |
… | |
… | |
2646 | ev_stat_start (EV_P_ ev_stat *w) |
2706 | ev_stat_start (EV_P_ ev_stat *w) |
2647 | { |
2707 | { |
2648 | if (expect_false (ev_is_active (w))) |
2708 | if (expect_false (ev_is_active (w))) |
2649 | return; |
2709 | return; |
2650 | |
2710 | |
2651 | /* since we use memcmp, we need to clear any padding data etc. */ |
|
|
2652 | memset (&w->prev, 0, sizeof (ev_statdata)); |
|
|
2653 | memset (&w->attr, 0, sizeof (ev_statdata)); |
|
|
2654 | |
|
|
2655 | ev_stat_stat (EV_A_ w); |
2711 | ev_stat_stat (EV_A_ w); |
2656 | |
2712 | |
|
|
2713 | if (w->interval < MIN_STAT_INTERVAL && w->interval) |
2657 | if (w->interval < MIN_STAT_INTERVAL) |
2714 | w->interval = MIN_STAT_INTERVAL; |
2658 | w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL; |
|
|
2659 | |
2715 | |
2660 | ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); |
2716 | ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL); |
2661 | ev_set_priority (&w->timer, ev_priority (w)); |
2717 | ev_set_priority (&w->timer, ev_priority (w)); |
2662 | |
2718 | |
2663 | #if EV_USE_INOTIFY |
2719 | #if EV_USE_INOTIFY |
2664 | infy_init (EV_A); |
2720 | infy_init (EV_A); |
2665 | |
2721 | |
2666 | if (fs_fd >= 0) |
2722 | if (fs_fd >= 0) |
2667 | infy_add (EV_A_ w); |
2723 | infy_add (EV_A_ w); |
2668 | else |
2724 | else |
2669 | #endif |
2725 | #endif |
2670 | ev_timer_start (EV_A_ &w->timer); |
2726 | ev_timer_again (EV_A_ &w->timer); |
2671 | |
2727 | |
2672 | ev_start (EV_A_ (W)w, 1); |
2728 | ev_start (EV_A_ (W)w, 1); |
2673 | |
2729 | |
2674 | EV_FREQUENT_CHECK; |
2730 | EV_FREQUENT_CHECK; |
2675 | } |
2731 | } |
… | |
… | |
2850 | static void |
2906 | static void |
2851 | embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) |
2907 | embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) |
2852 | { |
2908 | { |
2853 | ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); |
2909 | ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); |
2854 | |
2910 | |
|
|
2911 | ev_embed_stop (EV_A_ w); |
|
|
2912 | |
2855 | { |
2913 | { |
2856 | struct ev_loop *loop = w->other; |
2914 | struct ev_loop *loop = w->other; |
2857 | |
2915 | |
2858 | ev_loop_fork (EV_A); |
2916 | ev_loop_fork (EV_A); |
|
|
2917 | ev_loop (EV_A_ EVLOOP_NONBLOCK); |
2859 | } |
2918 | } |
|
|
2919 | |
|
|
2920 | ev_embed_start (EV_A_ w); |
2860 | } |
2921 | } |
2861 | |
2922 | |
2862 | #if 0 |
2923 | #if 0 |
2863 | static void |
2924 | static void |
2864 | embed_idle_cb (EV_P_ ev_idle *idle, int revents) |
2925 | embed_idle_cb (EV_P_ ev_idle *idle, int revents) |
… | |
… | |
2873 | if (expect_false (ev_is_active (w))) |
2934 | if (expect_false (ev_is_active (w))) |
2874 | return; |
2935 | return; |
2875 | |
2936 | |
2876 | { |
2937 | { |
2877 | struct ev_loop *loop = w->other; |
2938 | struct ev_loop *loop = w->other; |
2878 | assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); |
2939 | assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); |
2879 | ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); |
2940 | ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); |
2880 | } |
2941 | } |
2881 | |
2942 | |
2882 | EV_FREQUENT_CHECK; |
2943 | EV_FREQUENT_CHECK; |
2883 | |
2944 | |