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 |
57 | # define EV_USE_REALTIME 1 |
69 | # define EV_USE_REALTIME 0 |
58 | # endif |
70 | # endif |
59 | # else |
71 | # else |
60 | # ifndef EV_USE_MONOTONIC |
72 | # ifndef EV_USE_MONOTONIC |
61 | # define EV_USE_MONOTONIC 0 |
73 | # define EV_USE_MONOTONIC 0 |
62 | # endif |
74 | # endif |
… | |
… | |
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 |
174 | # endif |
194 | # endif |
175 | #endif |
195 | #endif |
176 | |
196 | |
177 | #ifndef EV_USE_REALTIME |
197 | #ifndef EV_USE_REALTIME |
178 | # define EV_USE_REALTIME 0 |
198 | # define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL |
179 | #endif |
199 | #endif |
180 | |
200 | |
181 | #ifndef EV_USE_NANOSLEEP |
201 | #ifndef EV_USE_NANOSLEEP |
182 | # if _POSIX_C_SOURCE >= 199309L |
202 | # if _POSIX_C_SOURCE >= 199309L |
183 | # define EV_USE_NANOSLEEP 1 |
203 | # define EV_USE_NANOSLEEP 1 |
… | |
… | |
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> |
… | |
… | |
367 | typedef ev_watcher_time *WT; |
397 | typedef ev_watcher_time *WT; |
368 | |
398 | |
369 | #define ev_active(w) ((W)(w))->active |
399 | #define ev_active(w) ((W)(w))->active |
370 | #define ev_at(w) ((WT)(w))->at |
400 | #define ev_at(w) ((WT)(w))->at |
371 | |
401 | |
372 | #if EV_USE_MONOTONIC |
402 | #if EV_USE_REALTIME |
373 | /* sig_atomic_t is used to avoid per-thread variables or locking but still */ |
403 | /* sig_atomic_t is used to avoid per-thread variables or locking but still */ |
374 | /* giving it a reasonably high chance of working on typical architetcures */ |
404 | /* giving it a reasonably high chance of working on typical architetcures */ |
|
|
405 | static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ |
|
|
406 | #endif |
|
|
407 | |
|
|
408 | #if EV_USE_MONOTONIC |
375 | static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
409 | static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
376 | #endif |
410 | #endif |
377 | |
411 | |
378 | #ifdef _WIN32 |
412 | #ifdef _WIN32 |
379 | # include "ev_win32.c" |
413 | # include "ev_win32.c" |
… | |
… | |
523 | |
557 | |
524 | ev_tstamp |
558 | ev_tstamp |
525 | ev_time (void) |
559 | ev_time (void) |
526 | { |
560 | { |
527 | #if EV_USE_REALTIME |
561 | #if EV_USE_REALTIME |
|
|
562 | if (expect_true (have_realtime)) |
|
|
563 | { |
528 | struct timespec ts; |
564 | struct timespec ts; |
529 | clock_gettime (CLOCK_REALTIME, &ts); |
565 | clock_gettime (CLOCK_REALTIME, &ts); |
530 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
566 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
531 | #else |
567 | } |
|
|
568 | #endif |
|
|
569 | |
532 | struct timeval tv; |
570 | struct timeval tv; |
533 | gettimeofday (&tv, 0); |
571 | gettimeofday (&tv, 0); |
534 | return tv.tv_sec + tv.tv_usec * 1e-6; |
572 | return tv.tv_sec + tv.tv_usec * 1e-6; |
535 | #endif |
|
|
536 | } |
573 | } |
537 | |
574 | |
538 | ev_tstamp inline_size |
575 | ev_tstamp inline_size |
539 | get_clock (void) |
576 | get_clock (void) |
540 | { |
577 | { |
… | |
… | |
718 | #ifdef EV_FD_TO_WIN32_HANDLE |
755 | #ifdef EV_FD_TO_WIN32_HANDLE |
719 | anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); |
756 | anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); |
720 | #else |
757 | #else |
721 | anfd->handle = _get_osfhandle (fd); |
758 | anfd->handle = _get_osfhandle (fd); |
722 | #endif |
759 | #endif |
723 | assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); |
760 | assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); |
724 | } |
761 | } |
725 | #endif |
762 | #endif |
726 | |
763 | |
727 | { |
764 | { |
728 | unsigned char o_events = anfd->events; |
765 | unsigned char o_events = anfd->events; |
… | |
… | |
1101 | ev_feed_signal_event (EV_P_ int signum) |
1138 | ev_feed_signal_event (EV_P_ int signum) |
1102 | { |
1139 | { |
1103 | WL w; |
1140 | WL w; |
1104 | |
1141 | |
1105 | #if EV_MULTIPLICITY |
1142 | #if EV_MULTIPLICITY |
1106 | assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); |
1143 | assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); |
1107 | #endif |
1144 | #endif |
1108 | |
1145 | |
1109 | --signum; |
1146 | --signum; |
1110 | |
1147 | |
1111 | if (signum < 0 || signum >= signalmax) |
1148 | if (signum < 0 || signum >= signalmax) |
… | |
… | |
1240 | /* kqueue is borked on everything but netbsd apparently */ |
1277 | /* kqueue is borked on everything but netbsd apparently */ |
1241 | /* it usually doesn't work correctly on anything but sockets and pipes */ |
1278 | /* it usually doesn't work correctly on anything but sockets and pipes */ |
1242 | flags &= ~EVBACKEND_KQUEUE; |
1279 | flags &= ~EVBACKEND_KQUEUE; |
1243 | #endif |
1280 | #endif |
1244 | #ifdef __APPLE__ |
1281 | #ifdef __APPLE__ |
1245 | // flags &= ~EVBACKEND_KQUEUE; for documentation |
1282 | /* only select works correctly on that "unix-certified" platform */ |
1246 | flags &= ~EVBACKEND_POLL; |
1283 | flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ |
|
|
1284 | flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ |
1247 | #endif |
1285 | #endif |
1248 | |
1286 | |
1249 | return flags; |
1287 | return flags; |
1250 | } |
1288 | } |
1251 | |
1289 | |
… | |
… | |
1288 | static void noinline |
1326 | static void noinline |
1289 | loop_init (EV_P_ unsigned int flags) |
1327 | loop_init (EV_P_ unsigned int flags) |
1290 | { |
1328 | { |
1291 | if (!backend) |
1329 | if (!backend) |
1292 | { |
1330 | { |
|
|
1331 | #if EV_USE_REALTIME |
|
|
1332 | if (!have_realtime) |
|
|
1333 | { |
|
|
1334 | struct timespec ts; |
|
|
1335 | |
|
|
1336 | if (!clock_gettime (CLOCK_REALTIME, &ts)) |
|
|
1337 | have_realtime = 1; |
|
|
1338 | } |
|
|
1339 | #endif |
|
|
1340 | |
1293 | #if EV_USE_MONOTONIC |
1341 | #if EV_USE_MONOTONIC |
|
|
1342 | if (!have_monotonic) |
1294 | { |
1343 | { |
1295 | struct timespec ts; |
1344 | struct timespec ts; |
|
|
1345 | |
1296 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
1346 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
1297 | have_monotonic = 1; |
1347 | have_monotonic = 1; |
1298 | } |
1348 | } |
1299 | #endif |
1349 | #endif |
1300 | |
1350 | |
1301 | ev_rt_now = ev_time (); |
1351 | ev_rt_now = ev_time (); |
1302 | mn_now = get_clock (); |
1352 | mn_now = get_clock (); |
1303 | now_floor = mn_now; |
1353 | now_floor = mn_now; |
… | |
… | |
1504 | |
1554 | |
1505 | #if EV_VERIFY |
1555 | #if EV_VERIFY |
1506 | static void noinline |
1556 | static void noinline |
1507 | verify_watcher (EV_P_ W w) |
1557 | verify_watcher (EV_P_ W w) |
1508 | { |
1558 | { |
1509 | assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); |
1559 | assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); |
1510 | |
1560 | |
1511 | if (w->pending) |
1561 | if (w->pending) |
1512 | assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); |
1562 | assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); |
1513 | } |
1563 | } |
1514 | |
1564 | |
1515 | static void noinline |
1565 | static void noinline |
1516 | verify_heap (EV_P_ ANHE *heap, int N) |
1566 | verify_heap (EV_P_ ANHE *heap, int N) |
1517 | { |
1567 | { |
1518 | int i; |
1568 | int i; |
1519 | |
1569 | |
1520 | for (i = HEAP0; i < N + HEAP0; ++i) |
1570 | for (i = HEAP0; i < N + HEAP0; ++i) |
1521 | { |
1571 | { |
1522 | assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); |
1572 | assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); |
1523 | assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i]))); |
1573 | assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i]))); |
1524 | assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i])))); |
1574 | assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i])))); |
1525 | |
1575 | |
1526 | verify_watcher (EV_A_ (W)ANHE_w (heap [i])); |
1576 | verify_watcher (EV_A_ (W)ANHE_w (heap [i])); |
1527 | } |
1577 | } |
1528 | } |
1578 | } |
1529 | |
1579 | |
1530 | static void noinline |
1580 | static void noinline |
1531 | array_verify (EV_P_ W *ws, int cnt) |
1581 | array_verify (EV_P_ W *ws, int cnt) |
1532 | { |
1582 | { |
1533 | while (cnt--) |
1583 | while (cnt--) |
1534 | { |
1584 | { |
1535 | assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); |
1585 | assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); |
1536 | verify_watcher (EV_A_ ws [cnt]); |
1586 | verify_watcher (EV_A_ ws [cnt]); |
1537 | } |
1587 | } |
1538 | } |
1588 | } |
1539 | #endif |
1589 | #endif |
1540 | |
1590 | |
… | |
… | |
1547 | |
1597 | |
1548 | assert (activecnt >= -1); |
1598 | assert (activecnt >= -1); |
1549 | |
1599 | |
1550 | assert (fdchangemax >= fdchangecnt); |
1600 | assert (fdchangemax >= fdchangecnt); |
1551 | for (i = 0; i < fdchangecnt; ++i) |
1601 | for (i = 0; i < fdchangecnt; ++i) |
1552 | assert (("negative fd in fdchanges", fdchanges [i] >= 0)); |
1602 | assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); |
1553 | |
1603 | |
1554 | assert (anfdmax >= 0); |
1604 | assert (anfdmax >= 0); |
1555 | for (i = 0; i < anfdmax; ++i) |
1605 | for (i = 0; i < anfdmax; ++i) |
1556 | for (w = anfds [i].head; w; w = w->next) |
1606 | for (w = anfds [i].head; w; w = w->next) |
1557 | { |
1607 | { |
1558 | verify_watcher (EV_A_ (W)w); |
1608 | verify_watcher (EV_A_ (W)w); |
1559 | assert (("inactive fd watcher on anfd list", ev_active (w) == 1)); |
1609 | assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); |
1560 | assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); |
1610 | assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); |
1561 | } |
1611 | } |
1562 | |
1612 | |
1563 | assert (timermax >= timercnt); |
1613 | assert (timermax >= timercnt); |
1564 | verify_heap (EV_A_ timers, timercnt); |
1614 | verify_heap (EV_A_ timers, timercnt); |
1565 | |
1615 | |
… | |
… | |
1682 | { |
1732 | { |
1683 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
1733 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
1684 | |
1734 | |
1685 | if (expect_true (p->w)) |
1735 | if (expect_true (p->w)) |
1686 | { |
1736 | { |
1687 | /*assert (("non-pending watcher on pending list", p->w->pending));*/ |
1737 | /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/ |
1688 | |
1738 | |
1689 | p->w->pending = 0; |
1739 | p->w->pending = 0; |
1690 | EV_CB_INVOKE (p->w, p->events); |
1740 | EV_CB_INVOKE (p->w, p->events); |
1691 | EV_FREQUENT_CHECK; |
1741 | EV_FREQUENT_CHECK; |
1692 | } |
1742 | } |
… | |
… | |
1723 | |
1773 | |
1724 | while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) |
1774 | while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) |
1725 | { |
1775 | { |
1726 | ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); |
1776 | ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); |
1727 | |
1777 | |
1728 | /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/ |
1778 | /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/ |
1729 | |
1779 | |
1730 | /* first reschedule or stop timer */ |
1780 | /* first reschedule or stop timer */ |
1731 | if (w->repeat) |
1781 | if (w->repeat) |
1732 | { |
1782 | { |
1733 | ev_at (w) += w->repeat; |
1783 | ev_at (w) += w->repeat; |
1734 | if (ev_at (w) < mn_now) |
1784 | if (ev_at (w) < mn_now) |
1735 | ev_at (w) = mn_now; |
1785 | ev_at (w) = mn_now; |
1736 | |
1786 | |
1737 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
1787 | assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
1738 | |
1788 | |
1739 | ANHE_at_cache (timers [HEAP0]); |
1789 | ANHE_at_cache (timers [HEAP0]); |
1740 | downheap (timers, timercnt, HEAP0); |
1790 | downheap (timers, timercnt, HEAP0); |
1741 | } |
1791 | } |
1742 | else |
1792 | else |
… | |
… | |
1755 | |
1805 | |
1756 | while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) |
1806 | while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) |
1757 | { |
1807 | { |
1758 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); |
1808 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); |
1759 | |
1809 | |
1760 | /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ |
1810 | /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ |
1761 | |
1811 | |
1762 | /* first reschedule or stop timer */ |
1812 | /* first reschedule or stop timer */ |
1763 | if (w->reschedule_cb) |
1813 | if (w->reschedule_cb) |
1764 | { |
1814 | { |
1765 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
1815 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
1766 | |
1816 | |
1767 | assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); |
1817 | assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); |
1768 | |
1818 | |
1769 | ANHE_at_cache (periodics [HEAP0]); |
1819 | ANHE_at_cache (periodics [HEAP0]); |
1770 | downheap (periodics, periodiccnt, HEAP0); |
1820 | downheap (periodics, periodiccnt, HEAP0); |
1771 | } |
1821 | } |
1772 | else if (w->interval) |
1822 | else if (w->interval) |
… | |
… | |
2123 | int fd = w->fd; |
2173 | int fd = w->fd; |
2124 | |
2174 | |
2125 | if (expect_false (ev_is_active (w))) |
2175 | if (expect_false (ev_is_active (w))) |
2126 | return; |
2176 | return; |
2127 | |
2177 | |
2128 | assert (("ev_io_start called with negative fd", fd >= 0)); |
2178 | assert (("libev: ev_io_start called with negative fd", fd >= 0)); |
2129 | assert (("ev_io start called with illegal event mask", !(w->events & ~(EV_IOFDSET | EV_READ | EV_WRITE)))); |
2179 | assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV_IOFDSET | EV_READ | EV_WRITE)))); |
2130 | |
2180 | |
2131 | EV_FREQUENT_CHECK; |
2181 | EV_FREQUENT_CHECK; |
2132 | |
2182 | |
2133 | ev_start (EV_A_ (W)w, 1); |
2183 | ev_start (EV_A_ (W)w, 1); |
2134 | array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); |
2184 | array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); |
… | |
… | |
2145 | { |
2195 | { |
2146 | clear_pending (EV_A_ (W)w); |
2196 | clear_pending (EV_A_ (W)w); |
2147 | if (expect_false (!ev_is_active (w))) |
2197 | if (expect_false (!ev_is_active (w))) |
2148 | return; |
2198 | return; |
2149 | |
2199 | |
2150 | assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); |
2200 | assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); |
2151 | |
2201 | |
2152 | EV_FREQUENT_CHECK; |
2202 | EV_FREQUENT_CHECK; |
2153 | |
2203 | |
2154 | wlist_del (&anfds[w->fd].head, (WL)w); |
2204 | wlist_del (&anfds[w->fd].head, (WL)w); |
2155 | ev_stop (EV_A_ (W)w); |
2205 | ev_stop (EV_A_ (W)w); |
… | |
… | |
2165 | if (expect_false (ev_is_active (w))) |
2215 | if (expect_false (ev_is_active (w))) |
2166 | return; |
2216 | return; |
2167 | |
2217 | |
2168 | ev_at (w) += mn_now; |
2218 | ev_at (w) += mn_now; |
2169 | |
2219 | |
2170 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
2220 | assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
2171 | |
2221 | |
2172 | EV_FREQUENT_CHECK; |
2222 | EV_FREQUENT_CHECK; |
2173 | |
2223 | |
2174 | ++timercnt; |
2224 | ++timercnt; |
2175 | ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); |
2225 | ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); |
… | |
… | |
2178 | ANHE_at_cache (timers [ev_active (w)]); |
2228 | ANHE_at_cache (timers [ev_active (w)]); |
2179 | upheap (timers, ev_active (w)); |
2229 | upheap (timers, ev_active (w)); |
2180 | |
2230 | |
2181 | EV_FREQUENT_CHECK; |
2231 | EV_FREQUENT_CHECK; |
2182 | |
2232 | |
2183 | /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ |
2233 | /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ |
2184 | } |
2234 | } |
2185 | |
2235 | |
2186 | void noinline |
2236 | void noinline |
2187 | ev_timer_stop (EV_P_ ev_timer *w) |
2237 | ev_timer_stop (EV_P_ ev_timer *w) |
2188 | { |
2238 | { |
… | |
… | |
2193 | EV_FREQUENT_CHECK; |
2243 | EV_FREQUENT_CHECK; |
2194 | |
2244 | |
2195 | { |
2245 | { |
2196 | int active = ev_active (w); |
2246 | int active = ev_active (w); |
2197 | |
2247 | |
2198 | assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); |
2248 | assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); |
2199 | |
2249 | |
2200 | --timercnt; |
2250 | --timercnt; |
2201 | |
2251 | |
2202 | if (expect_true (active < timercnt + HEAP0)) |
2252 | if (expect_true (active < timercnt + HEAP0)) |
2203 | { |
2253 | { |
… | |
… | |
2247 | |
2297 | |
2248 | if (w->reschedule_cb) |
2298 | if (w->reschedule_cb) |
2249 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
2299 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
2250 | else if (w->interval) |
2300 | else if (w->interval) |
2251 | { |
2301 | { |
2252 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
2302 | assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); |
2253 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
2303 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
2254 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
2304 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
2255 | } |
2305 | } |
2256 | else |
2306 | else |
2257 | ev_at (w) = w->offset; |
2307 | ev_at (w) = w->offset; |
… | |
… | |
2265 | ANHE_at_cache (periodics [ev_active (w)]); |
2315 | ANHE_at_cache (periodics [ev_active (w)]); |
2266 | upheap (periodics, ev_active (w)); |
2316 | upheap (periodics, ev_active (w)); |
2267 | |
2317 | |
2268 | EV_FREQUENT_CHECK; |
2318 | EV_FREQUENT_CHECK; |
2269 | |
2319 | |
2270 | /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ |
2320 | /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ |
2271 | } |
2321 | } |
2272 | |
2322 | |
2273 | void noinline |
2323 | void noinline |
2274 | ev_periodic_stop (EV_P_ ev_periodic *w) |
2324 | ev_periodic_stop (EV_P_ ev_periodic *w) |
2275 | { |
2325 | { |
… | |
… | |
2280 | EV_FREQUENT_CHECK; |
2330 | EV_FREQUENT_CHECK; |
2281 | |
2331 | |
2282 | { |
2332 | { |
2283 | int active = ev_active (w); |
2333 | int active = ev_active (w); |
2284 | |
2334 | |
2285 | assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); |
2335 | assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); |
2286 | |
2336 | |
2287 | --periodiccnt; |
2337 | --periodiccnt; |
2288 | |
2338 | |
2289 | if (expect_true (active < periodiccnt + HEAP0)) |
2339 | if (expect_true (active < periodiccnt + HEAP0)) |
2290 | { |
2340 | { |
… | |
… | |
2313 | |
2363 | |
2314 | void noinline |
2364 | void noinline |
2315 | ev_signal_start (EV_P_ ev_signal *w) |
2365 | ev_signal_start (EV_P_ ev_signal *w) |
2316 | { |
2366 | { |
2317 | #if EV_MULTIPLICITY |
2367 | #if EV_MULTIPLICITY |
2318 | assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
2368 | assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
2319 | #endif |
2369 | #endif |
2320 | if (expect_false (ev_is_active (w))) |
2370 | if (expect_false (ev_is_active (w))) |
2321 | return; |
2371 | return; |
2322 | |
2372 | |
2323 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
2373 | assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); |
2324 | |
2374 | |
2325 | evpipe_init (EV_A); |
2375 | evpipe_init (EV_A); |
2326 | |
2376 | |
2327 | EV_FREQUENT_CHECK; |
2377 | EV_FREQUENT_CHECK; |
2328 | |
2378 | |
… | |
… | |
2379 | |
2429 | |
2380 | void |
2430 | void |
2381 | ev_child_start (EV_P_ ev_child *w) |
2431 | ev_child_start (EV_P_ ev_child *w) |
2382 | { |
2432 | { |
2383 | #if EV_MULTIPLICITY |
2433 | #if EV_MULTIPLICITY |
2384 | assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
2434 | assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
2385 | #endif |
2435 | #endif |
2386 | if (expect_false (ev_is_active (w))) |
2436 | if (expect_false (ev_is_active (w))) |
2387 | return; |
2437 | return; |
2388 | |
2438 | |
2389 | EV_FREQUENT_CHECK; |
2439 | EV_FREQUENT_CHECK; |
… | |
… | |
2414 | # ifdef _WIN32 |
2464 | # ifdef _WIN32 |
2415 | # undef lstat |
2465 | # undef lstat |
2416 | # define lstat(a,b) _stati64 (a,b) |
2466 | # define lstat(a,b) _stati64 (a,b) |
2417 | # endif |
2467 | # endif |
2418 | |
2468 | |
2419 | #define DEF_STAT_INTERVAL 5.0074891 |
2469 | #define DEF_STAT_INTERVAL 5.0074891 |
|
|
2470 | #define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ |
2420 | #define MIN_STAT_INTERVAL 0.1074891 |
2471 | #define MIN_STAT_INTERVAL 0.1074891 |
2421 | |
2472 | |
2422 | static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); |
2473 | static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); |
2423 | |
2474 | |
2424 | #if EV_USE_INOTIFY |
2475 | #if EV_USE_INOTIFY |
2425 | # define EV_INOTIFY_BUFSIZE 8192 |
2476 | # define EV_INOTIFY_BUFSIZE 8192 |
… | |
… | |
2429 | { |
2480 | { |
2430 | 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); |
2481 | 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); |
2431 | |
2482 | |
2432 | if (w->wd < 0) |
2483 | if (w->wd < 0) |
2433 | { |
2484 | { |
|
|
2485 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
2434 | ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ |
2486 | ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ |
2435 | |
2487 | |
2436 | /* monitor some parent directory for speedup hints */ |
2488 | /* monitor some parent directory for speedup hints */ |
2437 | /* note that exceeding the hardcoded limit is not a correctness issue, */ |
2489 | /* note that exceeding the hardcoded path limit is not a correctness issue, */ |
2438 | /* but an efficiency issue only */ |
2490 | /* but an efficiency issue only */ |
2439 | if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) |
2491 | if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) |
2440 | { |
2492 | { |
2441 | char path [4096]; |
2493 | char path [4096]; |
2442 | strcpy (path, w->path); |
2494 | strcpy (path, w->path); |
… | |
… | |
2446 | int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF |
2498 | int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF |
2447 | | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); |
2499 | | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); |
2448 | |
2500 | |
2449 | char *pend = strrchr (path, '/'); |
2501 | char *pend = strrchr (path, '/'); |
2450 | |
2502 | |
2451 | if (!pend) |
2503 | if (!pend || pend == path) |
2452 | break; /* whoops, no '/', complain to your admin */ |
2504 | break; |
2453 | |
2505 | |
2454 | *pend = 0; |
2506 | *pend = 0; |
2455 | w->wd = inotify_add_watch (fs_fd, path, mask); |
2507 | w->wd = inotify_add_watch (fs_fd, path, mask); |
2456 | } |
2508 | } |
2457 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
2509 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
2458 | } |
2510 | } |
2459 | } |
2511 | } |
2460 | else |
|
|
2461 | ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */ |
|
|
2462 | |
2512 | |
2463 | if (w->wd >= 0) |
2513 | if (w->wd >= 0) |
|
|
2514 | { |
2464 | wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); |
2515 | wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); |
|
|
2516 | |
|
|
2517 | /* now local changes will be tracked by inotify, but remote changes won't */ |
|
|
2518 | /* unless the filesystem it known to be local, we therefore still poll */ |
|
|
2519 | /* also do poll on <2.6.25, but with normal frequency */ |
|
|
2520 | struct statfs sfs; |
|
|
2521 | |
|
|
2522 | if (fs_2625 && !statfs (w->path, &sfs)) |
|
|
2523 | if (sfs.f_type == 0x1373 /* devfs */ |
|
|
2524 | || sfs.f_type == 0xEF53 /* ext2/3 */ |
|
|
2525 | || sfs.f_type == 0x3153464a /* jfs */ |
|
|
2526 | || sfs.f_type == 0x52654973 /* reiser3 */ |
|
|
2527 | || sfs.f_type == 0x01021994 /* tempfs */ |
|
|
2528 | || sfs.f_type == 0x58465342 /* xfs */) |
|
|
2529 | return; |
|
|
2530 | |
|
|
2531 | w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL; |
|
|
2532 | ev_timer_again (EV_A_ &w->timer); |
|
|
2533 | } |
2465 | } |
2534 | } |
2466 | |
2535 | |
2467 | static void noinline |
2536 | static void noinline |
2468 | infy_del (EV_P_ ev_stat *w) |
2537 | infy_del (EV_P_ ev_stat *w) |
2469 | { |
2538 | { |
… | |
… | |
2499 | |
2568 | |
2500 | if (w->wd == wd || wd == -1) |
2569 | if (w->wd == wd || wd == -1) |
2501 | { |
2570 | { |
2502 | if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) |
2571 | if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) |
2503 | { |
2572 | { |
|
|
2573 | wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); |
2504 | w->wd = -1; |
2574 | w->wd = -1; |
2505 | infy_add (EV_A_ w); /* re-add, no matter what */ |
2575 | infy_add (EV_A_ w); /* re-add, no matter what */ |
2506 | } |
2576 | } |
2507 | |
2577 | |
2508 | stat_timer_cb (EV_A_ &w->timer, 0); |
2578 | stat_timer_cb (EV_A_ &w->timer, 0); |
… | |
… | |
2522 | for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) |
2592 | for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) |
2523 | infy_wd (EV_A_ ev->wd, ev->wd, ev); |
2593 | infy_wd (EV_A_ ev->wd, ev->wd, ev); |
2524 | } |
2594 | } |
2525 | |
2595 | |
2526 | void inline_size |
2596 | void inline_size |
2527 | infy_init (EV_P) |
2597 | check_2625 (EV_P) |
2528 | { |
2598 | { |
2529 | if (fs_fd != -2) |
|
|
2530 | return; |
|
|
2531 | |
|
|
2532 | /* kernels < 2.6.25 are borked |
2599 | /* kernels < 2.6.25 are borked |
2533 | * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html |
2600 | * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html |
2534 | */ |
2601 | */ |
2535 | { |
|
|
2536 | struct utsname buf; |
2602 | struct utsname buf; |
2537 | int major, minor, micro; |
2603 | int major, minor, micro; |
2538 | |
2604 | |
2539 | fs_fd = -1; |
|
|
2540 | |
|
|
2541 | if (uname (&buf)) |
2605 | if (uname (&buf)) |
2542 | return; |
2606 | return; |
2543 | |
2607 | |
2544 | if (sscanf (buf.release, "%d.%d.%d", &major, &minor, µ) != 3) |
2608 | if (sscanf (buf.release, "%d.%d.%d", &major, &minor, µ) != 3) |
2545 | return; |
2609 | return; |
2546 | |
2610 | |
2547 | if (major < 2 |
2611 | if (major < 2 |
2548 | || (major == 2 && minor < 6) |
2612 | || (major == 2 && minor < 6) |
2549 | || (major == 2 && minor == 6 && micro < 25)) |
2613 | || (major == 2 && minor == 6 && micro < 25)) |
2550 | return; |
2614 | return; |
2551 | } |
2615 | |
|
|
2616 | fs_2625 = 1; |
|
|
2617 | } |
|
|
2618 | |
|
|
2619 | void inline_size |
|
|
2620 | infy_init (EV_P) |
|
|
2621 | { |
|
|
2622 | if (fs_fd != -2) |
|
|
2623 | return; |
|
|
2624 | |
|
|
2625 | fs_fd = -1; |
|
|
2626 | |
|
|
2627 | check_2625 (EV_A); |
2552 | |
2628 | |
2553 | fs_fd = inotify_init (); |
2629 | fs_fd = inotify_init (); |
2554 | |
2630 | |
2555 | if (fs_fd >= 0) |
2631 | if (fs_fd >= 0) |
2556 | { |
2632 | { |
… | |
… | |
2584 | w->wd = -1; |
2660 | w->wd = -1; |
2585 | |
2661 | |
2586 | if (fs_fd >= 0) |
2662 | if (fs_fd >= 0) |
2587 | infy_add (EV_A_ w); /* re-add, no matter what */ |
2663 | infy_add (EV_A_ w); /* re-add, no matter what */ |
2588 | else |
2664 | else |
2589 | ev_timer_start (EV_A_ &w->timer); |
2665 | ev_timer_again (EV_A_ &w->timer); |
2590 | } |
2666 | } |
2591 | } |
2667 | } |
2592 | } |
2668 | } |
2593 | |
2669 | |
2594 | #endif |
2670 | #endif |
… | |
… | |
2649 | ev_stat_start (EV_P_ ev_stat *w) |
2725 | ev_stat_start (EV_P_ ev_stat *w) |
2650 | { |
2726 | { |
2651 | if (expect_false (ev_is_active (w))) |
2727 | if (expect_false (ev_is_active (w))) |
2652 | return; |
2728 | return; |
2653 | |
2729 | |
2654 | /* since we use memcmp, we need to clear any padding data etc. */ |
|
|
2655 | memset (&w->prev, 0, sizeof (ev_statdata)); |
|
|
2656 | memset (&w->attr, 0, sizeof (ev_statdata)); |
|
|
2657 | |
|
|
2658 | ev_stat_stat (EV_A_ w); |
2730 | ev_stat_stat (EV_A_ w); |
2659 | |
2731 | |
|
|
2732 | if (w->interval < MIN_STAT_INTERVAL && w->interval) |
2660 | if (w->interval < MIN_STAT_INTERVAL) |
2733 | w->interval = MIN_STAT_INTERVAL; |
2661 | w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL; |
|
|
2662 | |
2734 | |
2663 | ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); |
2735 | ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL); |
2664 | ev_set_priority (&w->timer, ev_priority (w)); |
2736 | ev_set_priority (&w->timer, ev_priority (w)); |
2665 | |
2737 | |
2666 | #if EV_USE_INOTIFY |
2738 | #if EV_USE_INOTIFY |
2667 | infy_init (EV_A); |
2739 | infy_init (EV_A); |
2668 | |
2740 | |
2669 | if (fs_fd >= 0) |
2741 | if (fs_fd >= 0) |
2670 | infy_add (EV_A_ w); |
2742 | infy_add (EV_A_ w); |
2671 | else |
2743 | else |
2672 | #endif |
2744 | #endif |
2673 | ev_timer_start (EV_A_ &w->timer); |
2745 | ev_timer_again (EV_A_ &w->timer); |
2674 | |
2746 | |
2675 | ev_start (EV_A_ (W)w, 1); |
2747 | ev_start (EV_A_ (W)w, 1); |
2676 | |
2748 | |
2677 | EV_FREQUENT_CHECK; |
2749 | EV_FREQUENT_CHECK; |
2678 | } |
2750 | } |
… | |
… | |
2853 | static void |
2925 | static void |
2854 | embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) |
2926 | embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) |
2855 | { |
2927 | { |
2856 | ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); |
2928 | ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); |
2857 | |
2929 | |
|
|
2930 | ev_embed_stop (EV_A_ w); |
|
|
2931 | |
2858 | { |
2932 | { |
2859 | struct ev_loop *loop = w->other; |
2933 | struct ev_loop *loop = w->other; |
2860 | |
2934 | |
2861 | ev_loop_fork (EV_A); |
2935 | ev_loop_fork (EV_A); |
|
|
2936 | ev_loop (EV_A_ EVLOOP_NONBLOCK); |
2862 | } |
2937 | } |
|
|
2938 | |
|
|
2939 | ev_embed_start (EV_A_ w); |
2863 | } |
2940 | } |
2864 | |
2941 | |
2865 | #if 0 |
2942 | #if 0 |
2866 | static void |
2943 | static void |
2867 | embed_idle_cb (EV_P_ ev_idle *idle, int revents) |
2944 | embed_idle_cb (EV_P_ ev_idle *idle, int revents) |
… | |
… | |
2876 | if (expect_false (ev_is_active (w))) |
2953 | if (expect_false (ev_is_active (w))) |
2877 | return; |
2954 | return; |
2878 | |
2955 | |
2879 | { |
2956 | { |
2880 | struct ev_loop *loop = w->other; |
2957 | struct ev_loop *loop = w->other; |
2881 | assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); |
2958 | assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); |
2882 | ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); |
2959 | ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); |
2883 | } |
2960 | } |
2884 | |
2961 | |
2885 | EV_FREQUENT_CHECK; |
2962 | EV_FREQUENT_CHECK; |
2886 | |
2963 | |