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 | * |
… | |
… | |
815 | select (0, 0, 0, 0, &tv); |
815 | select (0, 0, 0, 0, &tv); |
816 | #endif |
816 | #endif |
817 | } |
817 | } |
818 | } |
818 | } |
819 | |
819 | |
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820 | inline_speed int |
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821 | ev_timeout_to_ms (ev_tstamp timeout) |
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822 | { |
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823 | int ms = timeout * 1000. + .999999; |
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824 | |
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825 | return expect_true (ms) ? ms : timeout < 1e-6 ? 0 : 1; |
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826 | } |
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827 | |
820 | /*****************************************************************************/ |
828 | /*****************************************************************************/ |
821 | |
829 | |
822 | #define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ |
830 | #define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ |
823 | |
831 | |
824 | /* find a suitable new size for the given array, */ |
832 | /* find a suitable new size for the given array, */ |
… | |
… | |
1343 | char dummy; |
1351 | char dummy; |
1344 | /* see discussion in evpipe_write when you think this read should be recv in win32 */ |
1352 | /* see discussion in evpipe_write when you think this read should be recv in win32 */ |
1345 | read (evpipe [0], &dummy, 1); |
1353 | read (evpipe [0], &dummy, 1); |
1346 | } |
1354 | } |
1347 | |
1355 | |
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1356 | #if EV_SIGNAL_ENABLE |
1348 | if (sig_pending) |
1357 | if (sig_pending) |
1349 | { |
1358 | { |
1350 | sig_pending = 0; |
1359 | sig_pending = 0; |
1351 | |
1360 | |
1352 | for (i = EV_NSIG - 1; i--; ) |
1361 | for (i = EV_NSIG - 1; i--; ) |
1353 | if (expect_false (signals [i].pending)) |
1362 | if (expect_false (signals [i].pending)) |
1354 | ev_feed_signal_event (EV_A_ i + 1); |
1363 | ev_feed_signal_event (EV_A_ i + 1); |
1355 | } |
1364 | } |
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1365 | #endif |
1356 | |
1366 | |
1357 | #if EV_ASYNC_ENABLE |
1367 | #if EV_ASYNC_ENABLE |
1358 | if (async_pending) |
1368 | if (async_pending) |
1359 | { |
1369 | { |
1360 | async_pending = 0; |
1370 | async_pending = 0; |
… | |
… | |
1369 | #endif |
1379 | #endif |
1370 | } |
1380 | } |
1371 | |
1381 | |
1372 | /*****************************************************************************/ |
1382 | /*****************************************************************************/ |
1373 | |
1383 | |
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1384 | void |
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1385 | ev_feed_signal (int signum) |
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1386 | { |
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1387 | #if EV_MULTIPLICITY |
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1388 | EV_P = signals [signum - 1].loop; |
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1389 | |
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1390 | if (!EV_A) |
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1391 | return; |
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1392 | #endif |
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1393 | |
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1394 | signals [signum - 1].pending = 1; |
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1395 | evpipe_write (EV_A_ &sig_pending); |
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1396 | } |
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1397 | |
1374 | static void |
1398 | static void |
1375 | ev_sighandler (int signum) |
1399 | ev_sighandler (int signum) |
1376 | { |
1400 | { |
1377 | #if EV_MULTIPLICITY |
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1378 | EV_P = signals [signum - 1].loop; |
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1379 | #endif |
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1380 | |
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1381 | #ifdef _WIN32 |
1401 | #ifdef _WIN32 |
1382 | signal (signum, ev_sighandler); |
1402 | signal (signum, ev_sighandler); |
1383 | #endif |
1403 | #endif |
1384 | |
1404 | |
1385 | signals [signum - 1].pending = 1; |
1405 | ev_feed_signal (signum); |
1386 | evpipe_write (EV_A_ &sig_pending); |
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1387 | } |
1406 | } |
1388 | |
1407 | |
1389 | void noinline |
1408 | void noinline |
1390 | ev_feed_signal_event (EV_P_ int signum) |
1409 | ev_feed_signal_event (EV_P_ int signum) |
1391 | { |
1410 | { |
… | |
… | |
1643 | static void noinline |
1662 | static void noinline |
1644 | loop_init (EV_P_ unsigned int flags) |
1663 | loop_init (EV_P_ unsigned int flags) |
1645 | { |
1664 | { |
1646 | if (!backend) |
1665 | if (!backend) |
1647 | { |
1666 | { |
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1667 | origflags = flags; |
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1668 | |
1648 | #if EV_USE_REALTIME |
1669 | #if EV_USE_REALTIME |
1649 | if (!have_realtime) |
1670 | if (!have_realtime) |
1650 | { |
1671 | { |
1651 | struct timespec ts; |
1672 | struct timespec ts; |
1652 | |
1673 | |
… | |
… | |
1697 | #endif |
1718 | #endif |
1698 | #if EV_USE_SIGNALFD |
1719 | #if EV_USE_SIGNALFD |
1699 | sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; |
1720 | sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; |
1700 | #endif |
1721 | #endif |
1701 | |
1722 | |
1702 | if (!(flags & 0x0000ffffU)) |
1723 | if (!(flags & EVBACKEND_MASK)) |
1703 | flags |= ev_recommended_backends (); |
1724 | flags |= ev_recommended_backends (); |
1704 | |
1725 | |
1705 | #if EV_USE_IOCP |
1726 | #if EV_USE_IOCP |
1706 | if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); |
1727 | if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); |
1707 | #endif |
1728 | #endif |
… | |
… | |
2099 | |
2120 | |
2100 | for (pri = NUMPRI; pri--; ) |
2121 | for (pri = NUMPRI; pri--; ) |
2101 | while (pendingcnt [pri]) |
2122 | while (pendingcnt [pri]) |
2102 | { |
2123 | { |
2103 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
2124 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
2104 | |
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2105 | /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/ |
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2106 | /* ^ this is no longer true, as pending_w could be here */ |
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2107 | |
2125 | |
2108 | p->w->pending = 0; |
2126 | p->w->pending = 0; |
2109 | EV_CB_INVOKE (p->w, p->events); |
2127 | EV_CB_INVOKE (p->w, p->events); |
2110 | EV_FREQUENT_CHECK; |
2128 | EV_FREQUENT_CHECK; |
2111 | } |
2129 | } |
… | |
… | |
2879 | sa.sa_handler = ev_sighandler; |
2897 | sa.sa_handler = ev_sighandler; |
2880 | sigfillset (&sa.sa_mask); |
2898 | sigfillset (&sa.sa_mask); |
2881 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
2899 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
2882 | sigaction (w->signum, &sa, 0); |
2900 | sigaction (w->signum, &sa, 0); |
2883 | |
2901 | |
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2902 | if (origflags & EVFLAG_NOSIGMASK) |
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2903 | { |
2884 | sigemptyset (&sa.sa_mask); |
2904 | sigemptyset (&sa.sa_mask); |
2885 | sigaddset (&sa.sa_mask, w->signum); |
2905 | sigaddset (&sa.sa_mask, w->signum); |
2886 | sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); |
2906 | sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); |
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2907 | } |
2887 | #endif |
2908 | #endif |
2888 | } |
2909 | } |
2889 | |
2910 | |
2890 | EV_FREQUENT_CHECK; |
2911 | EV_FREQUENT_CHECK; |
2891 | } |
2912 | } |