… | |
… | |
281 | perror (msg); |
281 | perror (msg); |
282 | abort (); |
282 | abort (); |
283 | } |
283 | } |
284 | } |
284 | } |
285 | |
285 | |
286 | static void *(*alloc)(void *ptr, size_t size) = realloc; |
286 | static void *(*alloc)(void *ptr, long size); |
287 | |
287 | |
288 | void |
288 | void |
289 | ev_set_allocator (void *(*cb)(void *ptr, size_t size)) |
289 | ev_set_allocator (void *(*cb)(void *ptr, long size)) |
290 | { |
290 | { |
291 | alloc = cb; |
291 | alloc = cb; |
292 | } |
292 | } |
293 | |
293 | |
294 | inline_speed void * |
294 | inline_speed void * |
295 | ev_realloc (void *ptr, size_t size) |
295 | ev_realloc (void *ptr, long size) |
296 | { |
296 | { |
297 | ptr = alloc (ptr, size); |
297 | ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); |
298 | |
298 | |
299 | if (!ptr && size) |
299 | if (!ptr && size) |
300 | { |
300 | { |
301 | fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", (long)size); |
301 | fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); |
302 | abort (); |
302 | abort (); |
303 | } |
303 | } |
304 | |
304 | |
305 | return ptr; |
305 | return ptr; |
306 | } |
306 | } |
… | |
… | |
324 | { |
324 | { |
325 | W w; |
325 | W w; |
326 | int events; |
326 | int events; |
327 | } ANPENDING; |
327 | } ANPENDING; |
328 | |
328 | |
|
|
329 | #if EV_USE_INOTIFY |
329 | typedef struct |
330 | typedef struct |
330 | { |
331 | { |
331 | #if EV_USE_INOTIFY |
|
|
332 | WL head; |
332 | WL head; |
333 | #endif |
|
|
334 | } ANFS; |
333 | } ANFS; |
|
|
334 | #endif |
335 | |
335 | |
336 | #if EV_MULTIPLICITY |
336 | #if EV_MULTIPLICITY |
337 | |
337 | |
338 | struct ev_loop |
338 | struct ev_loop |
339 | { |
339 | { |
… | |
… | |
589 | static void noinline |
589 | static void noinline |
590 | fd_rearm_all (EV_P) |
590 | fd_rearm_all (EV_P) |
591 | { |
591 | { |
592 | int fd; |
592 | int fd; |
593 | |
593 | |
594 | /* this should be highly optimised to not do anything but set a flag */ |
|
|
595 | for (fd = 0; fd < anfdmax; ++fd) |
594 | for (fd = 0; fd < anfdmax; ++fd) |
596 | if (anfds [fd].events) |
595 | if (anfds [fd].events) |
597 | { |
596 | { |
598 | anfds [fd].events = 0; |
597 | anfds [fd].events = 0; |
599 | fd_change (EV_A_ fd); |
598 | fd_change (EV_A_ fd); |
… | |
… | |
905 | ev_rt_now = ev_time (); |
904 | ev_rt_now = ev_time (); |
906 | mn_now = get_clock (); |
905 | mn_now = get_clock (); |
907 | now_floor = mn_now; |
906 | now_floor = mn_now; |
908 | rtmn_diff = ev_rt_now - mn_now; |
907 | rtmn_diff = ev_rt_now - mn_now; |
909 | |
908 | |
|
|
909 | /* pid check not overridable via env */ |
|
|
910 | #ifndef _WIN32 |
|
|
911 | if (flags & EVFLAG_FORKCHECK) |
|
|
912 | curpid = getpid (); |
|
|
913 | #endif |
|
|
914 | |
910 | if (!(flags & EVFLAG_NOENV) |
915 | if (!(flags & EVFLAG_NOENV) |
911 | && !enable_secure () |
916 | && !enable_secure () |
912 | && getenv ("LIBEV_FLAGS")) |
917 | && getenv ("LIBEV_FLAGS")) |
913 | flags = atoi (getenv ("LIBEV_FLAGS")); |
918 | flags = atoi (getenv ("LIBEV_FLAGS")); |
914 | |
919 | |
… | |
… | |
985 | array_free (check, EMPTY0); |
990 | array_free (check, EMPTY0); |
986 | |
991 | |
987 | backend = 0; |
992 | backend = 0; |
988 | } |
993 | } |
989 | |
994 | |
|
|
995 | void inline_size infy_fork (EV_P); |
|
|
996 | |
990 | void inline_size |
997 | void inline_size |
991 | loop_fork (EV_P) |
998 | loop_fork (EV_P) |
992 | { |
999 | { |
993 | #if EV_USE_PORT |
1000 | #if EV_USE_PORT |
994 | if (backend == EVBACKEND_PORT ) port_fork (EV_A); |
1001 | if (backend == EVBACKEND_PORT ) port_fork (EV_A); |
… | |
… | |
996 | #if EV_USE_KQUEUE |
1003 | #if EV_USE_KQUEUE |
997 | if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); |
1004 | if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); |
998 | #endif |
1005 | #endif |
999 | #if EV_USE_EPOLL |
1006 | #if EV_USE_EPOLL |
1000 | if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); |
1007 | if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); |
|
|
1008 | #endif |
|
|
1009 | #if EV_USE_INOTIFY |
|
|
1010 | infy_fork (EV_A); |
1001 | #endif |
1011 | #endif |
1002 | |
1012 | |
1003 | if (ev_is_active (&sigev)) |
1013 | if (ev_is_active (&sigev)) |
1004 | { |
1014 | { |
1005 | /* default loop */ |
1015 | /* default loop */ |
… | |
… | |
1265 | ev_tstamp odiff = rtmn_diff; |
1275 | ev_tstamp odiff = rtmn_diff; |
1266 | |
1276 | |
1267 | /* loop a few times, before making important decisions. |
1277 | /* loop a few times, before making important decisions. |
1268 | * on the choice of "4": one iteration isn't enough, |
1278 | * on the choice of "4": one iteration isn't enough, |
1269 | * in case we get preempted during the calls to |
1279 | * in case we get preempted during the calls to |
1270 | * ev_time and get_clock. a second call is almost guarenteed |
1280 | * ev_time and get_clock. a second call is almost guaranteed |
1271 | * to succeed in that case, though. and looping a few more times |
1281 | * to succeed in that case, though. and looping a few more times |
1272 | * doesn't hurt either as we only do this on time-jumps or |
1282 | * doesn't hurt either as we only do this on time-jumps or |
1273 | * in the unlikely event of getting preempted here. |
1283 | * in the unlikely event of having been preempted here. |
1274 | */ |
1284 | */ |
1275 | for (i = 4; --i; ) |
1285 | for (i = 4; --i; ) |
1276 | { |
1286 | { |
1277 | rtmn_diff = ev_rt_now - mn_now; |
1287 | rtmn_diff = ev_rt_now - mn_now; |
1278 | |
1288 | |
… | |
… | |
1300 | { |
1310 | { |
1301 | #if EV_PERIODIC_ENABLE |
1311 | #if EV_PERIODIC_ENABLE |
1302 | periodics_reschedule (EV_A); |
1312 | periodics_reschedule (EV_A); |
1303 | #endif |
1313 | #endif |
1304 | |
1314 | |
1305 | /* adjust timers. this is easy, as the offset is the same for all */ |
1315 | /* adjust timers. this is easy, as the offset is the same for all of them */ |
1306 | for (i = 0; i < timercnt; ++i) |
1316 | for (i = 0; i < timercnt; ++i) |
1307 | ((WT)timers [i])->at += ev_rt_now - mn_now; |
1317 | ((WT)timers [i])->at += ev_rt_now - mn_now; |
1308 | } |
1318 | } |
1309 | |
1319 | |
1310 | mn_now = ev_rt_now; |
1320 | mn_now = ev_rt_now; |
… | |
… | |
1330 | { |
1340 | { |
1331 | loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) |
1341 | loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) |
1332 | ? EVUNLOOP_ONE |
1342 | ? EVUNLOOP_ONE |
1333 | : EVUNLOOP_CANCEL; |
1343 | : EVUNLOOP_CANCEL; |
1334 | |
1344 | |
1335 | while (activecnt) |
1345 | call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ |
|
|
1346 | |
|
|
1347 | for (;;) |
1336 | { |
1348 | { |
1337 | /* we might have forked, so reify kernel state if necessary */ |
1349 | #ifndef _WIN32 |
|
|
1350 | if (expect_false (curpid)) /* penalise the forking check even more */ |
|
|
1351 | if (expect_false (getpid () != curpid)) |
|
|
1352 | { |
|
|
1353 | curpid = getpid (); |
|
|
1354 | postfork = 1; |
|
|
1355 | } |
|
|
1356 | #endif |
|
|
1357 | |
1338 | #if EV_FORK_ENABLE |
1358 | #if EV_FORK_ENABLE |
|
|
1359 | /* we might have forked, so queue fork handlers */ |
1339 | if (expect_false (postfork)) |
1360 | if (expect_false (postfork)) |
1340 | if (forkcnt) |
1361 | if (forkcnt) |
1341 | { |
1362 | { |
1342 | queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); |
1363 | queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); |
1343 | call_pending (EV_A); |
1364 | call_pending (EV_A); |
1344 | } |
1365 | } |
1345 | #endif |
1366 | #endif |
1346 | |
1367 | |
1347 | /* queue check watchers (and execute them) */ |
1368 | /* queue check watchers (and execute them) */ |
1348 | if (expect_false (preparecnt)) |
1369 | if (expect_false (preparecnt)) |
1349 | { |
1370 | { |
1350 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
1371 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
1351 | call_pending (EV_A); |
1372 | call_pending (EV_A); |
1352 | } |
1373 | } |
1353 | |
1374 | |
|
|
1375 | if (expect_false (!activecnt)) |
|
|
1376 | break; |
|
|
1377 | |
1354 | /* we might have forked, so reify kernel state if necessary */ |
1378 | /* we might have forked, so reify kernel state if necessary */ |
1355 | if (expect_false (postfork)) |
1379 | if (expect_false (postfork)) |
1356 | loop_fork (EV_A); |
1380 | loop_fork (EV_A); |
1357 | |
1381 | |
1358 | /* update fd-related kernel structures */ |
1382 | /* update fd-related kernel structures */ |
1359 | fd_reify (EV_A); |
1383 | fd_reify (EV_A); |
1360 | |
1384 | |
1361 | /* calculate blocking time */ |
1385 | /* calculate blocking time */ |
1362 | { |
1386 | { |
1363 | double block; |
1387 | ev_tstamp block; |
1364 | |
1388 | |
1365 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
1389 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
1366 | block = 0.; /* do not block at all */ |
1390 | block = 0.; /* do not block at all */ |
1367 | else |
1391 | else |
1368 | { |
1392 | { |
… | |
… | |
1713 | # endif |
1737 | # endif |
1714 | |
1738 | |
1715 | #define DEF_STAT_INTERVAL 5.0074891 |
1739 | #define DEF_STAT_INTERVAL 5.0074891 |
1716 | #define MIN_STAT_INTERVAL 0.1074891 |
1740 | #define MIN_STAT_INTERVAL 0.1074891 |
1717 | |
1741 | |
1718 | void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); |
1742 | static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); |
1719 | |
1743 | |
1720 | #if EV_USE_INOTIFY |
1744 | #if EV_USE_INOTIFY |
1721 | # define EV_INOTIFY_BUFSIZE ((PATH_MAX + sizeof (struct inotify_event)) + 2048) |
1745 | # define EV_INOTIFY_BUFSIZE 8192 |
1722 | |
1746 | |
1723 | static void noinline |
1747 | static void noinline |
1724 | infy_add (EV_P_ ev_stat *w) |
1748 | infy_add (EV_P_ ev_stat *w) |
1725 | { |
1749 | { |
1726 | 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); |
1750 | 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); |
… | |
… | |
1728 | if (w->wd < 0) |
1752 | if (w->wd < 0) |
1729 | { |
1753 | { |
1730 | ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ |
1754 | ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ |
1731 | |
1755 | |
1732 | /* monitor some parent directory for speedup hints */ |
1756 | /* monitor some parent directory for speedup hints */ |
1733 | if (errno == ENOENT || errno == EACCES) |
1757 | if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) |
1734 | { |
1758 | { |
1735 | char path [PATH_MAX]; |
1759 | char path [4096]; |
1736 | strcpy (path, w->path); |
1760 | strcpy (path, w->path); |
1737 | |
1761 | |
1738 | do |
1762 | do |
1739 | { |
1763 | { |
1740 | int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF |
1764 | int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF |
… | |
… | |
1744 | |
1768 | |
1745 | if (!pend) |
1769 | if (!pend) |
1746 | break; /* whoops, no '/', complain to your admin */ |
1770 | break; /* whoops, no '/', complain to your admin */ |
1747 | |
1771 | |
1748 | *pend = 0; |
1772 | *pend = 0; |
1749 | w->wd = inotify_add_watch (fs_fd, path, IN_DELETE_SELF | IN_CREATE | IN_MOVED_TO | IN_MASK_ADD); |
1773 | w->wd = inotify_add_watch (fs_fd, path, mask); |
1750 | } |
1774 | } |
1751 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
1775 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
1752 | } |
1776 | } |
1753 | } |
1777 | } |
1754 | else |
1778 | else |
… | |
… | |
1759 | } |
1783 | } |
1760 | |
1784 | |
1761 | static void noinline |
1785 | static void noinline |
1762 | infy_del (EV_P_ ev_stat *w) |
1786 | infy_del (EV_P_ ev_stat *w) |
1763 | { |
1787 | { |
1764 | WL w_; |
|
|
1765 | int slot; |
1788 | int slot; |
1766 | int wd = w->wd; |
1789 | int wd = w->wd; |
1767 | |
1790 | |
1768 | if (wd < 0) |
1791 | if (wd < 0) |
1769 | return; |
1792 | return; |
… | |
… | |
1798 | { |
1821 | { |
1799 | w->wd = -1; |
1822 | w->wd = -1; |
1800 | infy_add (EV_A_ w); /* re-add, no matter what */ |
1823 | infy_add (EV_A_ w); /* re-add, no matter what */ |
1801 | } |
1824 | } |
1802 | |
1825 | |
1803 | stat_timer_cb (EV_P_ &w->timer, 0); |
1826 | stat_timer_cb (EV_A_ &w->timer, 0); |
1804 | } |
1827 | } |
1805 | } |
1828 | } |
1806 | } |
1829 | } |
1807 | } |
1830 | } |
1808 | |
1831 | |
… | |
… | |
1832 | ev_set_priority (&fs_w, EV_MAXPRI); |
1855 | ev_set_priority (&fs_w, EV_MAXPRI); |
1833 | ev_io_start (EV_A_ &fs_w); |
1856 | ev_io_start (EV_A_ &fs_w); |
1834 | } |
1857 | } |
1835 | } |
1858 | } |
1836 | |
1859 | |
|
|
1860 | void inline_size |
|
|
1861 | infy_fork (EV_P) |
|
|
1862 | { |
|
|
1863 | int slot; |
|
|
1864 | |
|
|
1865 | if (fs_fd < 0) |
|
|
1866 | return; |
|
|
1867 | |
|
|
1868 | close (fs_fd); |
|
|
1869 | fs_fd = inotify_init (); |
|
|
1870 | |
|
|
1871 | for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) |
|
|
1872 | { |
|
|
1873 | WL w_ = fs_hash [slot].head; |
|
|
1874 | fs_hash [slot].head = 0; |
|
|
1875 | |
|
|
1876 | while (w_) |
|
|
1877 | { |
|
|
1878 | ev_stat *w = (ev_stat *)w_; |
|
|
1879 | w_ = w_->next; /* lets us add this watcher */ |
|
|
1880 | |
|
|
1881 | w->wd = -1; |
|
|
1882 | |
|
|
1883 | if (fs_fd >= 0) |
|
|
1884 | infy_add (EV_A_ w); /* re-add, no matter what */ |
|
|
1885 | else |
|
|
1886 | ev_timer_start (EV_A_ &w->timer); |
|
|
1887 | } |
|
|
1888 | |
|
|
1889 | } |
|
|
1890 | } |
|
|
1891 | |
1837 | #endif |
1892 | #endif |
1838 | |
1893 | |
1839 | void |
1894 | void |
1840 | ev_stat_stat (EV_P_ ev_stat *w) |
1895 | ev_stat_stat (EV_P_ ev_stat *w) |
1841 | { |
1896 | { |
… | |
… | |
1843 | w->attr.st_nlink = 0; |
1898 | w->attr.st_nlink = 0; |
1844 | else if (!w->attr.st_nlink) |
1899 | else if (!w->attr.st_nlink) |
1845 | w->attr.st_nlink = 1; |
1900 | w->attr.st_nlink = 1; |
1846 | } |
1901 | } |
1847 | |
1902 | |
1848 | void noinline |
1903 | static void noinline |
1849 | stat_timer_cb (EV_P_ ev_timer *w_, int revents) |
1904 | stat_timer_cb (EV_P_ ev_timer *w_, int revents) |
1850 | { |
1905 | { |
1851 | ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); |
1906 | ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); |
1852 | |
1907 | |
1853 | /* we copy this here each the time so that */ |
1908 | /* we copy this here each the time so that */ |
1854 | /* prev has the old value when the callback gets invoked */ |
1909 | /* prev has the old value when the callback gets invoked */ |
1855 | w->prev = w->attr; |
1910 | w->prev = w->attr; |
1856 | ev_stat_stat (EV_A_ w); |
1911 | ev_stat_stat (EV_A_ w); |
1857 | |
1912 | |
1858 | if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata))) |
1913 | /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ |
|
|
1914 | if ( |
|
|
1915 | w->prev.st_dev != w->attr.st_dev |
|
|
1916 | || w->prev.st_ino != w->attr.st_ino |
|
|
1917 | || w->prev.st_mode != w->attr.st_mode |
|
|
1918 | || w->prev.st_nlink != w->attr.st_nlink |
|
|
1919 | || w->prev.st_uid != w->attr.st_uid |
|
|
1920 | || w->prev.st_gid != w->attr.st_gid |
|
|
1921 | || w->prev.st_rdev != w->attr.st_rdev |
|
|
1922 | || w->prev.st_size != w->attr.st_size |
|
|
1923 | || w->prev.st_atime != w->attr.st_atime |
|
|
1924 | || w->prev.st_mtime != w->attr.st_mtime |
|
|
1925 | || w->prev.st_ctime != w->attr.st_ctime |
1859 | { |
1926 | ) { |
1860 | #if EV_USE_INOTIFY |
1927 | #if EV_USE_INOTIFY |
1861 | infy_del (EV_A_ w); |
1928 | infy_del (EV_A_ w); |
1862 | infy_add (EV_A_ w); |
1929 | infy_add (EV_A_ w); |
1863 | ev_stat_stat (EV_A_ w); /* avoid race... */ |
1930 | ev_stat_stat (EV_A_ w); /* avoid race... */ |
1864 | #endif |
1931 | #endif |