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Comparing libev/ev.c (file contents):
Revision 1.351 by root, Sat Oct 16 06:46:55 2010 UTC vs.
Revision 1.371 by root, Mon Feb 7 21:45:32 2011 UTC

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 *
… …
34 * by deleting the provisions above and replace them with the notice 34 * by deleting the provisions above and replace them with the notice
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39
40#ifdef __cplusplus
41extern "C" {
42#endif
43 39
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
… …
182# include EV_H 178# include EV_H
183#else 179#else
184# include "ev.h" 180# include "ev.h"
185#endif 181#endif
186 182
183EV_CPP(extern "C" {)
184
187#ifndef _WIN32 185#ifndef _WIN32
188# include <sys/time.h> 186# include <sys/time.h>
189# include <sys/wait.h> 187# include <sys/wait.h>
190# include <unistd.h> 188# include <unistd.h>
191#else 189#else
… …
378# undef EV_USE_INOTIFY 376# undef EV_USE_INOTIFY
379# define EV_USE_INOTIFY 0 377# define EV_USE_INOTIFY 0
380#endif 378#endif
381 379
382#if !EV_USE_NANOSLEEP 380#if !EV_USE_NANOSLEEP
383# ifndef _WIN32 381/* hp-ux has it in sys/time.h, which we unconditionally include above */
382# if !defined(_WIN32) && !defined(__hpux)
384# include <sys/select.h> 383# include <sys/select.h>
385# endif 384# endif
386#endif 385#endif
387 386
388#if EV_USE_INOTIFY 387#if EV_USE_INOTIFY
389# include <sys/utsname.h>
390# include <sys/statfs.h> 388# include <sys/statfs.h>
391# include <sys/inotify.h> 389# include <sys/inotify.h>
392/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 390/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
393# ifndef IN_DONT_FOLLOW 391# ifndef IN_DONT_FOLLOW
394# undef EV_USE_INOTIFY 392# undef EV_USE_INOTIFY
… …
411# define EFD_CLOEXEC O_CLOEXEC 409# define EFD_CLOEXEC O_CLOEXEC
412# else 410# else
413# define EFD_CLOEXEC 02000000 411# define EFD_CLOEXEC 02000000
414# endif 412# endif
415# endif 413# endif
416# ifdef __cplusplus
417extern "C" {
418# endif
419int (eventfd) (unsigned int initval, int flags); 414EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
420# ifdef __cplusplus
421}
422# endif
423#endif 415#endif
424 416
425#if EV_USE_SIGNALFD 417#if EV_USE_SIGNALFD
426/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 418/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
427# include <stdint.h> 419# include <stdint.h>
… …
433# define SFD_CLOEXEC O_CLOEXEC 425# define SFD_CLOEXEC O_CLOEXEC
434# else 426# else
435# define SFD_CLOEXEC 02000000 427# define SFD_CLOEXEC 02000000
436# endif 428# endif
437# endif 429# endif
438# ifdef __cplusplus
439extern "C" {
440# endif
441int signalfd (int fd, const sigset_t *mask, int flags); 430EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
442 431
443struct signalfd_siginfo 432struct signalfd_siginfo
444{ 433{
445 uint32_t ssi_signo; 434 uint32_t ssi_signo;
446 char pad[128 - sizeof (uint32_t)]; 435 char pad[128 - sizeof (uint32_t)];
447}; 436};
448# ifdef __cplusplus
449}
450# endif
451#endif 437#endif
452 438
453/**/ 439/**/
454 440
455#if EV_VERIFY >= 3 441#if EV_VERIFY >= 3
… …
537# include "ev_win32.c" 523# include "ev_win32.c"
538#endif 524#endif
539 525
540/*****************************************************************************/ 526/*****************************************************************************/
541 527
528#ifdef __linux
529# include <sys/utsname.h>
530#endif
531
532static unsigned int noinline
533ev_linux_version (void)
534{
535#ifdef __linux
536 unsigned int v = 0;
537 struct utsname buf;
538 int i;
539 char *p = buf.release;
540
541 if (uname (&buf))
542 return 0;
543
544 for (i = 3+1; --i; )
545 {
546 unsigned int c = 0;
547
548 for (;;)
549 {
550 if (*p >= '0' && *p <= '9')
551 c = c * 10 + *p++ - '0';
552 else
553 {
554 p += *p == '.';
555 break;
556 }
557 }
558
559 v = (v << 8) | c;
560 }
561
562 return v;
563#else
564 return 0;
565#endif
566}
567
568/*****************************************************************************/
569
542#if EV_AVOID_STDIO 570#if EV_AVOID_STDIO
543static void noinline 571static void noinline
544ev_printerr (const char *msg) 572ev_printerr (const char *msg)
545{ 573{
546 write (STDERR_FILENO, msg, strlen (msg)); 574 write (STDERR_FILENO, msg, strlen (msg));
… …
564 if (syserr_cb) 592 if (syserr_cb)
565 syserr_cb (msg); 593 syserr_cb (msg);
566 else 594 else
567 { 595 {
568#if EV_AVOID_STDIO 596#if EV_AVOID_STDIO
569 const char *err = strerror (errno);
570
571 ev_printerr (msg); 597 ev_printerr (msg);
572 ev_printerr (": "); 598 ev_printerr (": ");
573 ev_printerr (err); 599 ev_printerr (strerror (errno));
574 ev_printerr ("\n"); 600 ev_printerr ("\n");
575#else 601#else
576 perror (msg); 602 perror (msg);
577#endif 603#endif
578 abort (); 604 abort ();
… …
612 ptr = alloc (ptr, size); 638 ptr = alloc (ptr, size);
613 639
614 if (!ptr && size) 640 if (!ptr && size)
615 { 641 {
616#if EV_AVOID_STDIO 642#if EV_AVOID_STDIO
617 ev_printerr ("libev: memory allocation failed, aborting.\n"); 643 ev_printerr ("(libev) memory allocation failed, aborting.\n");
618#else 644#else
619 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 645 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
620#endif 646#endif
621 abort (); 647 abort ();
622 } 648 }
623 649
624 return ptr; 650 return ptr;
… …
641 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 667 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
642 unsigned char unused; 668 unsigned char unused;
643#if EV_USE_EPOLL 669#if EV_USE_EPOLL
644 unsigned int egen; /* generation counter to counter epoll bugs */ 670 unsigned int egen; /* generation counter to counter epoll bugs */
645#endif 671#endif
646#if EV_SELECT_IS_WINSOCKET 672#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
647 SOCKET handle; 673 SOCKET handle;
674#endif
675#if EV_USE_IOCP
676 OVERLAPPED or, ow;
648#endif 677#endif
649} ANFD; 678} ANFD;
650 679
651/* stores the pending event set for a given watcher */ 680/* stores the pending event set for a given watcher */
652typedef struct 681typedef struct
… …
717# define EV_RELEASE_CB (void)0 746# define EV_RELEASE_CB (void)0
718# define EV_ACQUIRE_CB (void)0 747# define EV_ACQUIRE_CB (void)0
719# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 748# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
720#endif 749#endif
721 750
722#define EVUNLOOP_RECURSE 0x80 751#define EVBREAK_RECURSE 0x80
723 752
724/*****************************************************************************/ 753/*****************************************************************************/
725 754
726#ifndef EV_HAVE_EV_TIME 755#ifndef EV_HAVE_EV_TIME
727ev_tstamp 756ev_tstamp
… …
785 /* by older ones */ 814 /* by older ones */
786 EV_TV_SET (tv, delay); 815 EV_TV_SET (tv, delay);
787 select (0, 0, 0, 0, &tv); 816 select (0, 0, 0, 0, &tv);
788#endif 817#endif
789 } 818 }
819}
820
821inline_speed int
822ev_timeout_to_ms (ev_tstamp timeout)
823{
824 int ms = timeout * 1000. + .999999;
825
826 return expect_true (ms) ? ms : timeout < 1e-6 ? 0 : 1;
790} 827}
791 828
792/*****************************************************************************/ 829/*****************************************************************************/
793 830
794#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 831#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
… …
937inline_size void 974inline_size void
938fd_reify (EV_P) 975fd_reify (EV_P)
939{ 976{
940 int i; 977 int i;
941 978
979#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
980 for (i = 0; i < fdchangecnt; ++i)
981 {
982 int fd = fdchanges [i];
983 ANFD *anfd = anfds + fd;
984
985 if (anfd->reify & EV__IOFDSET)
986 {
987 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
988
989 if (handle != anfd->handle)
990 {
991 unsigned long arg;
992
993 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
994
995 /* handle changed, but fd didn't - we need to do it in two steps */
996 backend_modify (EV_A_ fd, anfd->events, 0);
997 anfd->events = 0;
998 anfd->handle = handle;
999 }
1000 }
1001 }
1002#endif
1003
942 for (i = 0; i < fdchangecnt; ++i) 1004 for (i = 0; i < fdchangecnt; ++i)
943 { 1005 {
944 int fd = fdchanges [i]; 1006 int fd = fdchanges [i];
945 ANFD *anfd = anfds + fd; 1007 ANFD *anfd = anfds + fd;
946 ev_io *w; 1008 ev_io *w;
947 1009
948 unsigned char o_events = anfd->events; 1010 unsigned char o_events = anfd->events;
949 unsigned char o_reify = anfd->reify; 1011 unsigned char o_reify = anfd->reify;
950 1012
951 anfd->reify = 0; 1013 anfd->reify = 0;
952
953#if EV_SELECT_IS_WINSOCKET
954 if (o_reify & EV__IOFDSET)
955 {
956 unsigned long arg;
957 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
958 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
959 }
960#endif
961 1014
962 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 1015 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
963 { 1016 {
964 anfd->events = 0; 1017 anfd->events = 0;
965 1018
… …
1314 char dummy; 1367 char dummy;
1315 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 1368 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1316 read (evpipe [0], &dummy, 1); 1369 read (evpipe [0], &dummy, 1);
1317 } 1370 }
1318 1371
1372#if EV_SIGNAL_ENABLE
1319 if (sig_pending) 1373 if (sig_pending)
1320 { 1374 {
1321 sig_pending = 0; 1375 sig_pending = 0;
1322 1376
1323 for (i = EV_NSIG - 1; i--; ) 1377 for (i = EV_NSIG - 1; i--; )
1324 if (expect_false (signals [i].pending)) 1378 if (expect_false (signals [i].pending))
1325 ev_feed_signal_event (EV_A_ i + 1); 1379 ev_feed_signal_event (EV_A_ i + 1);
1326 } 1380 }
1381#endif
1327 1382
1328#if EV_ASYNC_ENABLE 1383#if EV_ASYNC_ENABLE
1329 if (async_pending) 1384 if (async_pending)
1330 { 1385 {
1331 async_pending = 0; 1386 async_pending = 0;
… …
1340#endif 1395#endif
1341} 1396}
1342 1397
1343/*****************************************************************************/ 1398/*****************************************************************************/
1344 1399
1400void
1401ev_feed_signal (int signum)
1402{
1403#if EV_MULTIPLICITY
1404 EV_P = signals [signum - 1].loop;
1405
1406 if (!EV_A)
1407 return;
1408#endif
1409
1410 signals [signum - 1].pending = 1;
1411 evpipe_write (EV_A_ &sig_pending);
1412}
1413
1345static void 1414static void
1346ev_sighandler (int signum) 1415ev_sighandler (int signum)
1347{ 1416{
1348#if EV_MULTIPLICITY
1349 EV_P = signals [signum - 1].loop;
1350#endif
1351
1352#ifdef _WIN32 1417#ifdef _WIN32
1353 signal (signum, ev_sighandler); 1418 signal (signum, ev_sighandler);
1354#endif 1419#endif
1355 1420
1356 signals [signum - 1].pending = 1; 1421 ev_feed_signal (signum);
1357 evpipe_write (EV_A_ &sig_pending);
1358} 1422}
1359 1423
1360void noinline 1424void noinline
1361ev_feed_signal_event (EV_P_ int signum) 1425ev_feed_signal_event (EV_P_ int signum)
1362{ 1426{
… …
1462 1526
1463#endif 1527#endif
1464 1528
1465/*****************************************************************************/ 1529/*****************************************************************************/
1466 1530
1531#if EV_USE_IOCP
1532# include "ev_iocp.c"
1533#endif
1467#if EV_USE_PORT 1534#if EV_USE_PORT
1468# include "ev_port.c" 1535# include "ev_port.c"
1469#endif 1536#endif
1470#if EV_USE_KQUEUE 1537#if EV_USE_KQUEUE
1471# include "ev_kqueue.c" 1538# include "ev_kqueue.c"
… …
1544ev_embeddable_backends (void) 1611ev_embeddable_backends (void)
1545{ 1612{
1546 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1613 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1547 1614
1548 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 1615 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1549 /* please fix it and tell me how to detect the fix */ 1616 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1550 flags &= ~EVBACKEND_EPOLL; 1617 flags &= ~EVBACKEND_EPOLL;
1551 1618
1552 return flags; 1619 return flags;
1553} 1620}
1554 1621
1555unsigned int 1622unsigned int
… …
1611static void noinline 1678static void noinline
1612loop_init (EV_P_ unsigned int flags) 1679loop_init (EV_P_ unsigned int flags)
1613{ 1680{
1614 if (!backend) 1681 if (!backend)
1615 { 1682 {
1683 origflags = flags;
1684
1616#if EV_USE_REALTIME 1685#if EV_USE_REALTIME
1617 if (!have_realtime) 1686 if (!have_realtime)
1618 { 1687 {
1619 struct timespec ts; 1688 struct timespec ts;
1620 1689
… …
1665#endif 1734#endif
1666#if EV_USE_SIGNALFD 1735#if EV_USE_SIGNALFD
1667 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 1736 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1668#endif 1737#endif
1669 1738
1670 if (!(flags & 0x0000ffffU)) 1739 if (!(flags & EVBACKEND_MASK))
1671 flags |= ev_recommended_backends (); 1740 flags |= ev_recommended_backends ();
1672 1741
1742#if EV_USE_IOCP
1743 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1744#endif
1673#if EV_USE_PORT 1745#if EV_USE_PORT
1674 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1746 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1675#endif 1747#endif
1676#if EV_USE_KQUEUE 1748#if EV_USE_KQUEUE
1677 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1749 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1694#endif 1766#endif
1695 } 1767 }
1696} 1768}
1697 1769
1698/* free up a loop structure */ 1770/* free up a loop structure */
1699static void noinline 1771void
1700loop_destroy (EV_P) 1772ev_loop_destroy (EV_P)
1701{ 1773{
1702 int i; 1774 int i;
1775
1776#if EV_MULTIPLICITY
1777 /* mimic free (0) */
1778 if (!EV_A)
1779 return;
1780#endif
1781
1782#if EV_CLEANUP_ENABLE
1783 /* queue cleanup watchers (and execute them) */
1784 if (expect_false (cleanupcnt))
1785 {
1786 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1787 EV_INVOKE_PENDING;
1788 }
1789#endif
1790
1791#if EV_CHILD_ENABLE
1792 if (ev_is_active (&childev))
1793 {
1794 ev_ref (EV_A); /* child watcher */
1795 ev_signal_stop (EV_A_ &childev);
1796 }
1797#endif
1703 1798
1704 if (ev_is_active (&pipe_w)) 1799 if (ev_is_active (&pipe_w))
1705 { 1800 {
1706 /*ev_ref (EV_A);*/ 1801 /*ev_ref (EV_A);*/
1707 /*ev_io_stop (EV_A_ &pipe_w);*/ 1802 /*ev_io_stop (EV_A_ &pipe_w);*/
… …
1729#endif 1824#endif
1730 1825
1731 if (backend_fd >= 0) 1826 if (backend_fd >= 0)
1732 close (backend_fd); 1827 close (backend_fd);
1733 1828
1829#if EV_USE_IOCP
1830 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1831#endif
1734#if EV_USE_PORT 1832#if EV_USE_PORT
1735 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1833 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1736#endif 1834#endif
1737#if EV_USE_KQUEUE 1835#if EV_USE_KQUEUE
1738 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 1836 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1765 array_free (periodic, EMPTY); 1863 array_free (periodic, EMPTY);
1766#endif 1864#endif
1767#if EV_FORK_ENABLE 1865#if EV_FORK_ENABLE
1768 array_free (fork, EMPTY); 1866 array_free (fork, EMPTY);
1769#endif 1867#endif
1868#if EV_CLEANUP_ENABLE
1869 array_free (cleanup, EMPTY);
1870#endif
1770 array_free (prepare, EMPTY); 1871 array_free (prepare, EMPTY);
1771 array_free (check, EMPTY); 1872 array_free (check, EMPTY);
1772#if EV_ASYNC_ENABLE 1873#if EV_ASYNC_ENABLE
1773 array_free (async, EMPTY); 1874 array_free (async, EMPTY);
1774#endif 1875#endif
1775 1876
1776 backend = 0; 1877 backend = 0;
1878
1879#if EV_MULTIPLICITY
1880 if (ev_is_default_loop (EV_A))
1881#endif
1882 ev_default_loop_ptr = 0;
1883#if EV_MULTIPLICITY
1884 else
1885 ev_free (EV_A);
1886#endif
1777} 1887}
1778 1888
1779#if EV_USE_INOTIFY 1889#if EV_USE_INOTIFY
1780inline_size void infy_fork (EV_P); 1890inline_size void infy_fork (EV_P);
1781#endif 1891#endif
… …
1840 loop_init (EV_A_ flags); 1950 loop_init (EV_A_ flags);
1841 1951
1842 if (ev_backend (EV_A)) 1952 if (ev_backend (EV_A))
1843 return EV_A; 1953 return EV_A;
1844 1954
1955 ev_free (EV_A);
1845 return 0; 1956 return 0;
1846} 1957}
1847 1958
1848void
1849ev_loop_destroy (EV_P)
1850{
1851 loop_destroy (EV_A);
1852 ev_free (loop);
1853}
1854
1855void
1856ev_loop_fork (EV_P)
1857{
1858 postfork = 1; /* must be in line with ev_default_fork */
1859}
1860#endif /* multiplicity */ 1959#endif /* multiplicity */
1861 1960
1862#if EV_VERIFY 1961#if EV_VERIFY
1863static void noinline 1962static void noinline
1864verify_watcher (EV_P_ W w) 1963verify_watcher (EV_P_ W w)
… …
1939#if EV_FORK_ENABLE 2038#if EV_FORK_ENABLE
1940 assert (forkmax >= forkcnt); 2039 assert (forkmax >= forkcnt);
1941 array_verify (EV_A_ (W *)forks, forkcnt); 2040 array_verify (EV_A_ (W *)forks, forkcnt);
1942#endif 2041#endif
1943 2042
2043#if EV_CLEANUP_ENABLE
2044 assert (cleanupmax >= cleanupcnt);
2045 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2046#endif
2047
1944#if EV_ASYNC_ENABLE 2048#if EV_ASYNC_ENABLE
1945 assert (asyncmax >= asynccnt); 2049 assert (asyncmax >= asynccnt);
1946 array_verify (EV_A_ (W *)asyncs, asynccnt); 2050 array_verify (EV_A_ (W *)asyncs, asynccnt);
1947#endif 2051#endif
1948 2052
… …
1966} 2070}
1967#endif 2071#endif
1968 2072
1969#if EV_MULTIPLICITY 2073#if EV_MULTIPLICITY
1970struct ev_loop * 2074struct ev_loop *
1971ev_default_loop_init (unsigned int flags)
1972#else 2075#else
1973int 2076int
2077#endif
1974ev_default_loop (unsigned int flags) 2078ev_default_loop (unsigned int flags)
1975#endif
1976{ 2079{
1977 if (!ev_default_loop_ptr) 2080 if (!ev_default_loop_ptr)
1978 { 2081 {
1979#if EV_MULTIPLICITY 2082#if EV_MULTIPLICITY
1980 EV_P = ev_default_loop_ptr = &default_loop_struct; 2083 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1999 2102
2000 return ev_default_loop_ptr; 2103 return ev_default_loop_ptr;
2001} 2104}
2002 2105
2003void 2106void
2004ev_default_destroy (void) 2107ev_loop_fork (EV_P)
2005{ 2108{
2006#if EV_MULTIPLICITY
2007 EV_P = ev_default_loop_ptr;
2008#endif
2009
2010 ev_default_loop_ptr = 0;
2011
2012#if EV_CHILD_ENABLE
2013 ev_ref (EV_A); /* child watcher */
2014 ev_signal_stop (EV_A_ &childev);
2015#endif
2016
2017 loop_destroy (EV_A);
2018}
2019
2020void
2021ev_default_fork (void)
2022{
2023#if EV_MULTIPLICITY
2024 EV_P = ev_default_loop_ptr;
2025#endif
2026
2027 postfork = 1; /* must be in line with ev_loop_fork */ 2109 postfork = 1; /* must be in line with ev_default_fork */
2028} 2110}
2029 2111
2030/*****************************************************************************/ 2112/*****************************************************************************/
2031 2113
2032void 2114void
… …
2054 2136
2055 for (pri = NUMPRI; pri--; ) 2137 for (pri = NUMPRI; pri--; )
2056 while (pendingcnt [pri]) 2138 while (pendingcnt [pri])
2057 { 2139 {
2058 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2140 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
2059
2060 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2061 /* ^ this is no longer true, as pending_w could be here */
2062 2141
2063 p->w->pending = 0; 2142 p->w->pending = 0;
2064 EV_CB_INVOKE (p->w, p->events); 2143 EV_CB_INVOKE (p->w, p->events);
2065 EV_FREQUENT_CHECK; 2144 EV_FREQUENT_CHECK;
2066 } 2145 }
… …
2128 feed_reverse_done (EV_A_ EV_TIMER); 2207 feed_reverse_done (EV_A_ EV_TIMER);
2129 } 2208 }
2130} 2209}
2131 2210
2132#if EV_PERIODIC_ENABLE 2211#if EV_PERIODIC_ENABLE
2212
2213inline_speed void
2214periodic_recalc (EV_P_ ev_periodic *w)
2215{
2216 /* TODO: use slow but potentially more correct incremental algo, */
2217 /* also do not rely on ceil */
2218 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2219}
2220
2133/* make periodics pending */ 2221/* make periodics pending */
2134inline_size void 2222inline_size void
2135periodics_reify (EV_P) 2223periodics_reify (EV_P)
2136{ 2224{
2137 EV_FREQUENT_CHECK; 2225 EV_FREQUENT_CHECK;
… …
2156 ANHE_at_cache (periodics [HEAP0]); 2244 ANHE_at_cache (periodics [HEAP0]);
2157 downheap (periodics, periodiccnt, HEAP0); 2245 downheap (periodics, periodiccnt, HEAP0);
2158 } 2246 }
2159 else if (w->interval) 2247 else if (w->interval)
2160 { 2248 {
2161 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2249 periodic_recalc (EV_A_ w);
2250
2162 /* if next trigger time is not sufficiently in the future, put it there */ 2251 /* if next trigger time is not sufficiently in the future, put it there */
2163 /* this might happen because of floating point inexactness */ 2252 /* this might happen because of floating point inexactness */
2164 if (ev_at (w) - ev_rt_now < TIME_EPSILON) 2253 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2165 { 2254 {
2166 ev_at (w) += w->interval; 2255 ev_at (w) += w->interval;
… …
2200 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2289 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2201 2290
2202 if (w->reschedule_cb) 2291 if (w->reschedule_cb)
2203 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2292 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2204 else if (w->interval) 2293 else if (w->interval)
2205 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2294 periodic_recalc (EV_A_ w);
2206 2295
2207 ANHE_at_cache (periodics [i]); 2296 ANHE_at_cache (periodics [i]);
2208 } 2297 }
2209 2298
2210 reheap (periodics, periodiccnt); 2299 reheap (periodics, periodiccnt);
… …
2292 mn_now = ev_rt_now; 2381 mn_now = ev_rt_now;
2293 } 2382 }
2294} 2383}
2295 2384
2296void 2385void
2297ev_loop (EV_P_ int flags) 2386ev_run (EV_P_ int flags)
2298{ 2387{
2299#if EV_FEATURE_API 2388#if EV_FEATURE_API
2300 ++loop_depth; 2389 ++loop_depth;
2301#endif 2390#endif
2302 2391
2303 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 2392 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2304 2393
2305 loop_done = EVUNLOOP_CANCEL; 2394 loop_done = EVBREAK_CANCEL;
2306 2395
2307 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 2396 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2308 2397
2309 do 2398 do
2310 { 2399 {
… …
2353 /* calculate blocking time */ 2442 /* calculate blocking time */
2354 { 2443 {
2355 ev_tstamp waittime = 0.; 2444 ev_tstamp waittime = 0.;
2356 ev_tstamp sleeptime = 0.; 2445 ev_tstamp sleeptime = 0.;
2357 2446
2447 /* remember old timestamp for io_blocktime calculation */
2448 ev_tstamp prev_mn_now = mn_now;
2449
2450 /* update time to cancel out callback processing overhead */
2451 time_update (EV_A_ 1e100);
2452
2358 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2453 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt)))
2359 { 2454 {
2360 /* remember old timestamp for io_blocktime calculation */
2361 ev_tstamp prev_mn_now = mn_now;
2362
2363 /* update time to cancel out callback processing overhead */
2364 time_update (EV_A_ 1e100);
2365
2366 waittime = MAX_BLOCKTIME; 2455 waittime = MAX_BLOCKTIME;
2367 2456
2368 if (timercnt) 2457 if (timercnt)
2369 { 2458 {
2370 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2459 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
… …
2400 } 2489 }
2401 2490
2402#if EV_FEATURE_API 2491#if EV_FEATURE_API
2403 ++loop_count; 2492 ++loop_count;
2404#endif 2493#endif
2405 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 2494 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2406 backend_poll (EV_A_ waittime); 2495 backend_poll (EV_A_ waittime);
2407 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 2496 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2408 2497
2409 /* update ev_rt_now, do magic */ 2498 /* update ev_rt_now, do magic */
2410 time_update (EV_A_ waittime + sleeptime); 2499 time_update (EV_A_ waittime + sleeptime);
2411 } 2500 }
2412 2501
… …
2430 EV_INVOKE_PENDING; 2519 EV_INVOKE_PENDING;
2431 } 2520 }
2432 while (expect_true ( 2521 while (expect_true (
2433 activecnt 2522 activecnt
2434 && !loop_done 2523 && !loop_done
2435 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2524 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2436 )); 2525 ));
2437 2526
2438 if (loop_done == EVUNLOOP_ONE) 2527 if (loop_done == EVBREAK_ONE)
2439 loop_done = EVUNLOOP_CANCEL; 2528 loop_done = EVBREAK_CANCEL;
2440 2529
2441#if EV_FEATURE_API 2530#if EV_FEATURE_API
2442 --loop_depth; 2531 --loop_depth;
2443#endif 2532#endif
2444} 2533}
2445 2534
2446void 2535void
2447ev_unloop (EV_P_ int how) 2536ev_break (EV_P_ int how)
2448{ 2537{
2449 loop_done = how; 2538 loop_done = how;
2450} 2539}
2451 2540
2452void 2541void
… …
2702 if (w->reschedule_cb) 2791 if (w->reschedule_cb)
2703 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2792 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2704 else if (w->interval) 2793 else if (w->interval)
2705 { 2794 {
2706 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 2795 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2707 /* this formula differs from the one in periodic_reify because we do not always round up */ 2796 periodic_recalc (EV_A_ w);
2708 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2709 } 2797 }
2710 else 2798 else
2711 ev_at (w) = w->offset; 2799 ev_at (w) = w->offset;
2712 2800
2713 EV_FREQUENT_CHECK; 2801 EV_FREQUENT_CHECK;
… …
2834 sa.sa_handler = ev_sighandler; 2922 sa.sa_handler = ev_sighandler;
2835 sigfillset (&sa.sa_mask); 2923 sigfillset (&sa.sa_mask);
2836 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2924 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2837 sigaction (w->signum, &sa, 0); 2925 sigaction (w->signum, &sa, 0);
2838 2926
2927 if (origflags & EVFLAG_NOSIGMASK)
2928 {
2839 sigemptyset (&sa.sa_mask); 2929 sigemptyset (&sa.sa_mask);
2840 sigaddset (&sa.sa_mask, w->signum); 2930 sigaddset (&sa.sa_mask, w->signum);
2841 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 2931 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2932 }
2842#endif 2933#endif
2843 } 2934 }
2844 2935
2845 EV_FREQUENT_CHECK; 2936 EV_FREQUENT_CHECK;
2846} 2937}
… …
3062 { 3153 {
3063 struct inotify_event *ev = (struct inotify_event *)(buf + ofs); 3154 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
3064 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3155 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3065 ofs += sizeof (struct inotify_event) + ev->len; 3156 ofs += sizeof (struct inotify_event) + ev->len;
3066 } 3157 }
3067}
3068
3069inline_size unsigned int
3070ev_linux_version (void)
3071{
3072 struct utsname buf;
3073 unsigned int v;
3074 int i;
3075 char *p = buf.release;
3076
3077 if (uname (&buf))
3078 return 0;
3079
3080 for (i = 3+1; --i; )
3081 {
3082 unsigned int c = 0;
3083
3084 for (;;)
3085 {
3086 if (*p >= '0' && *p <= '9')
3087 c = c * 10 + *p++ - '0';
3088 else
3089 {
3090 p += *p == '.';
3091 break;
3092 }
3093 }
3094
3095 v = (v << 8) | c;
3096 }
3097
3098 return v;
3099} 3158}
3100 3159
3101inline_size void 3160inline_size void
3102ev_check_2625 (EV_P) 3161ev_check_2625 (EV_P)
3103{ 3162{
… …
3427 3486
3428#if EV_EMBED_ENABLE 3487#if EV_EMBED_ENABLE
3429void noinline 3488void noinline
3430ev_embed_sweep (EV_P_ ev_embed *w) 3489ev_embed_sweep (EV_P_ ev_embed *w)
3431{ 3490{
3432 ev_loop (w->other, EVLOOP_NONBLOCK); 3491 ev_run (w->other, EVRUN_NOWAIT);
3433} 3492}
3434 3493
3435static void 3494static void
3436embed_io_cb (EV_P_ ev_io *io, int revents) 3495embed_io_cb (EV_P_ ev_io *io, int revents)
3437{ 3496{
3438 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3497 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3439 3498
3440 if (ev_cb (w)) 3499 if (ev_cb (w))
3441 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3500 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3442 else 3501 else
3443 ev_loop (w->other, EVLOOP_NONBLOCK); 3502 ev_run (w->other, EVRUN_NOWAIT);
3444} 3503}
3445 3504
3446static void 3505static void
3447embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3506embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3448{ 3507{
… …
3452 EV_P = w->other; 3511 EV_P = w->other;
3453 3512
3454 while (fdchangecnt) 3513 while (fdchangecnt)
3455 { 3514 {
3456 fd_reify (EV_A); 3515 fd_reify (EV_A);
3457 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3516 ev_run (EV_A_ EVRUN_NOWAIT);
3458 } 3517 }
3459 } 3518 }
3460} 3519}
3461 3520
3462static void 3521static void
… …
3468 3527
3469 { 3528 {
3470 EV_P = w->other; 3529 EV_P = w->other;
3471 3530
3472 ev_loop_fork (EV_A); 3531 ev_loop_fork (EV_A);
3473 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3532 ev_run (EV_A_ EVRUN_NOWAIT);
3474 } 3533 }
3475 3534
3476 ev_embed_start (EV_A_ w); 3535 ev_embed_start (EV_A_ w);
3477} 3536}
3478 3537
… …
3570 3629
3571 EV_FREQUENT_CHECK; 3630 EV_FREQUENT_CHECK;
3572} 3631}
3573#endif 3632#endif
3574 3633
3575#if EV_ASYNC_ENABLE 3634#if EV_CLEANUP_ENABLE
3576void 3635void
3577ev_async_start (EV_P_ ev_async *w) 3636ev_cleanup_start (EV_P_ ev_cleanup *w)
3578{ 3637{
3579 if (expect_false (ev_is_active (w))) 3638 if (expect_false (ev_is_active (w)))
3580 return; 3639 return;
3640
3641 EV_FREQUENT_CHECK;
3642
3643 ev_start (EV_A_ (W)w, ++cleanupcnt);
3644 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
3645 cleanups [cleanupcnt - 1] = w;
3646
3647 /* cleanup watchers should never keep a refcount on the loop */
3648 ev_unref (EV_A);
3649 EV_FREQUENT_CHECK;
3650}
3651
3652void
3653ev_cleanup_stop (EV_P_ ev_cleanup *w)
3654{
3655 clear_pending (EV_A_ (W)w);
3656 if (expect_false (!ev_is_active (w)))
3657 return;
3658
3659 EV_FREQUENT_CHECK;
3660 ev_ref (EV_A);
3661
3662 {
3663 int active = ev_active (w);
3664
3665 cleanups [active - 1] = cleanups [--cleanupcnt];
3666 ev_active (cleanups [active - 1]) = active;
3667 }
3668
3669 ev_stop (EV_A_ (W)w);
3670
3671 EV_FREQUENT_CHECK;
3672}
3673#endif
3674
3675#if EV_ASYNC_ENABLE
3676void
3677ev_async_start (EV_P_ ev_async *w)
3678{
3679 if (expect_false (ev_is_active (w)))
3680 return;
3681
3682 w->sent = 0;
3581 3683
3582 evpipe_init (EV_A); 3684 evpipe_init (EV_A);
3583 3685
3584 EV_FREQUENT_CHECK; 3686 EV_FREQUENT_CHECK;
3585 3687
… …
3805 3907
3806#if EV_MULTIPLICITY 3908#if EV_MULTIPLICITY
3807 #include "ev_wrap.h" 3909 #include "ev_wrap.h"
3808#endif 3910#endif
3809 3911
3810#ifdef __cplusplus 3912EV_CPP(})
3811}
3812#endif
3813 3913

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