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Comparing libev/ev.c (file contents):
Revision 1.345 by sf-exg, Sat Jul 31 22:33:26 2010 UTC vs.
Revision 1.366 by root, Mon Jan 10 01:58:54 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
… …
384# include <sys/select.h> 382# include <sys/select.h>
385# endif 383# endif
386#endif 384#endif
387 385
388#if EV_USE_INOTIFY 386#if EV_USE_INOTIFY
389# include <sys/utsname.h>
390# include <sys/statfs.h> 387# include <sys/statfs.h>
391# include <sys/inotify.h> 388# include <sys/inotify.h>
392/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 389/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
393# ifndef IN_DONT_FOLLOW 390# ifndef IN_DONT_FOLLOW
394# undef EV_USE_INOTIFY 391# undef EV_USE_INOTIFY
… …
411# define EFD_CLOEXEC O_CLOEXEC 408# define EFD_CLOEXEC O_CLOEXEC
412# else 409# else
413# define EFD_CLOEXEC 02000000 410# define EFD_CLOEXEC 02000000
414# endif 411# endif
415# endif 412# endif
416# ifdef __cplusplus
417extern "C" {
418# endif
419int (eventfd) (unsigned int initval, int flags); 413EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
420# ifdef __cplusplus
421}
422# endif
423#endif 414#endif
424 415
425#if EV_USE_SIGNALFD 416#if EV_USE_SIGNALFD
426/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 417/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
427# include <stdint.h> 418# include <stdint.h>
… …
433# define SFD_CLOEXEC O_CLOEXEC 424# define SFD_CLOEXEC O_CLOEXEC
434# else 425# else
435# define SFD_CLOEXEC 02000000 426# define SFD_CLOEXEC 02000000
436# endif 427# endif
437# endif 428# endif
438# ifdef __cplusplus
439extern "C" {
440# endif
441int signalfd (int fd, const sigset_t *mask, int flags); 429EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
442 430
443struct signalfd_siginfo 431struct signalfd_siginfo
444{ 432{
445 uint32_t ssi_signo; 433 uint32_t ssi_signo;
446 char pad[128 - sizeof (uint32_t)]; 434 char pad[128 - sizeof (uint32_t)];
447}; 435};
448# ifdef __cplusplus
449}
450# endif 436#endif
451#endif
452
453 437
454/**/ 438/**/
455 439
456#if EV_VERIFY >= 3 440#if EV_VERIFY >= 3
457# define EV_FREQUENT_CHECK ev_verify (EV_A) 441# define EV_FREQUENT_CHECK ev_verify (EV_A)
… …
470#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 454#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
471 455
472#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 456#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
473#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 457#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
474 458
459#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
460#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
461
475#if __GNUC__ >= 4 462#if __GNUC__ >= 4
476# define expect(expr,value) __builtin_expect ((expr),(value)) 463# define expect(expr,value) __builtin_expect ((expr),(value))
477# define noinline __attribute__ ((noinline)) 464# define noinline __attribute__ ((noinline))
478#else 465#else
479# define expect(expr,value) (expr) 466# define expect(expr,value) (expr)
… …
535# include "ev_win32.c" 522# include "ev_win32.c"
536#endif 523#endif
537 524
538/*****************************************************************************/ 525/*****************************************************************************/
539 526
527#ifdef __linux
528# include <sys/utsname.h>
529#endif
530
531static unsigned int noinline
532ev_linux_version (void)
533{
534#ifdef __linux
535 unsigned int v = 0;
536 struct utsname buf;
537 int i;
538 char *p = buf.release;
539
540 if (uname (&buf))
541 return 0;
542
543 for (i = 3+1; --i; )
544 {
545 unsigned int c = 0;
546
547 for (;;)
548 {
549 if (*p >= '0' && *p <= '9')
550 c = c * 10 + *p++ - '0';
551 else
552 {
553 p += *p == '.';
554 break;
555 }
556 }
557
558 v = (v << 8) | c;
559 }
560
561 return v;
562#else
563 return 0;
564#endif
565}
566
567/*****************************************************************************/
568
540#if EV_AVOID_STDIO 569#if EV_AVOID_STDIO
541static void noinline 570static void noinline
542ev_printerr (const char *msg) 571ev_printerr (const char *msg)
543{ 572{
544 write (STDERR_FILENO, msg, strlen (msg)); 573 write (STDERR_FILENO, msg, strlen (msg));
… …
562 if (syserr_cb) 591 if (syserr_cb)
563 syserr_cb (msg); 592 syserr_cb (msg);
564 else 593 else
565 { 594 {
566#if EV_AVOID_STDIO 595#if EV_AVOID_STDIO
567 const char *err = strerror (errno);
568
569 ev_printerr (msg); 596 ev_printerr (msg);
570 ev_printerr (": "); 597 ev_printerr (": ");
571 ev_printerr (err); 598 ev_printerr (strerror (errno));
572 ev_printerr ("\n"); 599 ev_printerr ("\n");
573#else 600#else
574 perror (msg); 601 perror (msg);
575#endif 602#endif
576 abort (); 603 abort ();
… …
610 ptr = alloc (ptr, size); 637 ptr = alloc (ptr, size);
611 638
612 if (!ptr && size) 639 if (!ptr && size)
613 { 640 {
614#if EV_AVOID_STDIO 641#if EV_AVOID_STDIO
615 ev_printerr ("libev: memory allocation failed, aborting.\n"); 642 ev_printerr ("(libev) memory allocation failed, aborting.\n");
616#else 643#else
617 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 644 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
618#endif 645#endif
619 abort (); 646 abort ();
620 } 647 }
621 648
622 return ptr; 649 return ptr;
… …
639 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 666 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
640 unsigned char unused; 667 unsigned char unused;
641#if EV_USE_EPOLL 668#if EV_USE_EPOLL
642 unsigned int egen; /* generation counter to counter epoll bugs */ 669 unsigned int egen; /* generation counter to counter epoll bugs */
643#endif 670#endif
644#if EV_SELECT_IS_WINSOCKET 671#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
645 SOCKET handle; 672 SOCKET handle;
673#endif
674#if EV_USE_IOCP
675 OVERLAPPED or, ow;
646#endif 676#endif
647} ANFD; 677} ANFD;
648 678
649/* stores the pending event set for a given watcher */ 679/* stores the pending event set for a given watcher */
650typedef struct 680typedef struct
… …
715# define EV_RELEASE_CB (void)0 745# define EV_RELEASE_CB (void)0
716# define EV_ACQUIRE_CB (void)0 746# define EV_ACQUIRE_CB (void)0
717# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 747# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
718#endif 748#endif
719 749
720#define EVUNLOOP_RECURSE 0x80 750#define EVBREAK_RECURSE 0x80
721 751
722/*****************************************************************************/ 752/*****************************************************************************/
723 753
724#ifndef EV_HAVE_EV_TIME 754#ifndef EV_HAVE_EV_TIME
725ev_tstamp 755ev_tstamp
… …
769 if (delay > 0.) 799 if (delay > 0.)
770 { 800 {
771#if EV_USE_NANOSLEEP 801#if EV_USE_NANOSLEEP
772 struct timespec ts; 802 struct timespec ts;
773 803
774 ts.tv_sec = (time_t)delay; 804 EV_TS_SET (ts, delay);
775 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
776
777 nanosleep (&ts, 0); 805 nanosleep (&ts, 0);
778#elif defined(_WIN32) 806#elif defined(_WIN32)
779 Sleep ((unsigned long)(delay * 1e3)); 807 Sleep ((unsigned long)(delay * 1e3));
780#else 808#else
781 struct timeval tv; 809 struct timeval tv;
782 810
783 tv.tv_sec = (time_t)delay;
784 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
785
786 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 811 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
787 /* something not guaranteed by newer posix versions, but guaranteed */ 812 /* something not guaranteed by newer posix versions, but guaranteed */
788 /* by older ones */ 813 /* by older ones */
814 EV_TV_SET (tv, delay);
789 select (0, 0, 0, 0, &tv); 815 select (0, 0, 0, 0, &tv);
790#endif 816#endif
791 } 817 }
792} 818}
793 819
… …
945 { 971 {
946 int fd = fdchanges [i]; 972 int fd = fdchanges [i];
947 ANFD *anfd = anfds + fd; 973 ANFD *anfd = anfds + fd;
948 ev_io *w; 974 ev_io *w;
949 975
950 unsigned char events = 0; 976 unsigned char o_events = anfd->events;
977 unsigned char o_reify = anfd->reify;
951 978
952 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 979 anfd->reify = 0;
953 events |= (unsigned char)w->events;
954 980
955#if EV_SELECT_IS_WINSOCKET 981#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
956 if (events) 982 if (o_reify & EV__IOFDSET)
957 { 983 {
958 unsigned long arg; 984 unsigned long arg;
959 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 985 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
960 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 986 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
987 printf ("oi %d %x\n", fd, anfd->handle);//D
961 } 988 }
962#endif 989#endif
963 990
991 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
964 { 992 {
965 unsigned char o_events = anfd->events;
966 unsigned char o_reify = anfd->reify;
967
968 anfd->reify = 0;
969 anfd->events = events; 993 anfd->events = 0;
970 994
971 if (o_events != events || o_reify & EV__IOFDSET) 995 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
996 anfd->events |= (unsigned char)w->events;
997
998 if (o_events != anfd->events)
999 o_reify = EV__IOFDSET; /* actually |= */
1000 }
1001
1002 if (o_reify & EV__IOFDSET)
972 backend_modify (EV_A_ fd, o_events, events); 1003 backend_modify (EV_A_ fd, o_events, anfd->events);
973 }
974 } 1004 }
975 1005
976 fdchangecnt = 0; 1006 fdchangecnt = 0;
977} 1007}
978 1008
… …
1281 uint64_t counter = 1; 1311 uint64_t counter = 1;
1282 write (evfd, &counter, sizeof (uint64_t)); 1312 write (evfd, &counter, sizeof (uint64_t));
1283 } 1313 }
1284 else 1314 else
1285#endif 1315#endif
1316 /* win32 people keep sending patches that change this write() to send() */
1317 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1318 /* so when you think this write should be a send instead, please find out */
1319 /* where your send() is from - it's definitely not the microsoft send, and */
1320 /* tell me. thank you. */
1286 write (evpipe [1], &dummy, 1); 1321 write (evpipe [1], &dummy, 1);
1287 1322
1288 errno = old_errno; 1323 errno = old_errno;
1289 } 1324 }
1290} 1325}
… …
1304 } 1339 }
1305 else 1340 else
1306#endif 1341#endif
1307 { 1342 {
1308 char dummy; 1343 char dummy;
1344 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1309 read (evpipe [0], &dummy, 1); 1345 read (evpipe [0], &dummy, 1);
1310 } 1346 }
1311 1347
1312 if (sig_pending) 1348 if (sig_pending)
1313 { 1349 {
… …
1333#endif 1369#endif
1334} 1370}
1335 1371
1336/*****************************************************************************/ 1372/*****************************************************************************/
1337 1373
1374void
1375ev_feed_signal (int signum)
1376{
1377#if EV_MULTIPLICITY
1378 EV_P = signals [signum - 1].loop;
1379
1380 if (!EV_A)
1381 return;
1382#endif
1383
1384 signals [signum - 1].pending = 1;
1385 evpipe_write (EV_A_ &sig_pending);
1386}
1387
1338static void 1388static void
1339ev_sighandler (int signum) 1389ev_sighandler (int signum)
1340{ 1390{
1341#if EV_MULTIPLICITY
1342 EV_P = signals [signum - 1].loop;
1343#endif
1344
1345#ifdef _WIN32 1391#ifdef _WIN32
1346 signal (signum, ev_sighandler); 1392 signal (signum, ev_sighandler);
1347#endif 1393#endif
1348 1394
1349 signals [signum - 1].pending = 1; 1395 ev_feed_signal (signum);
1350 evpipe_write (EV_A_ &sig_pending);
1351} 1396}
1352 1397
1353void noinline 1398void noinline
1354ev_feed_signal_event (EV_P_ int signum) 1399ev_feed_signal_event (EV_P_ int signum)
1355{ 1400{
… …
1455 1500
1456#endif 1501#endif
1457 1502
1458/*****************************************************************************/ 1503/*****************************************************************************/
1459 1504
1505#if EV_USE_IOCP
1506# include "ev_iocp.c"
1507#endif
1460#if EV_USE_PORT 1508#if EV_USE_PORT
1461# include "ev_port.c" 1509# include "ev_port.c"
1462#endif 1510#endif
1463#if EV_USE_KQUEUE 1511#if EV_USE_KQUEUE
1464# include "ev_kqueue.c" 1512# include "ev_kqueue.c"
… …
1537ev_embeddable_backends (void) 1585ev_embeddable_backends (void)
1538{ 1586{
1539 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1587 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1540 1588
1541 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 1589 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1542 /* please fix it and tell me how to detect the fix */ 1590 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1543 flags &= ~EVBACKEND_EPOLL; 1591 flags &= ~EVBACKEND_EPOLL;
1544 1592
1545 return flags; 1593 return flags;
1546} 1594}
1547 1595
1548unsigned int 1596unsigned int
… …
1604static void noinline 1652static void noinline
1605loop_init (EV_P_ unsigned int flags) 1653loop_init (EV_P_ unsigned int flags)
1606{ 1654{
1607 if (!backend) 1655 if (!backend)
1608 { 1656 {
1657 origflags = flags;
1658
1609#if EV_USE_REALTIME 1659#if EV_USE_REALTIME
1610 if (!have_realtime) 1660 if (!have_realtime)
1611 { 1661 {
1612 struct timespec ts; 1662 struct timespec ts;
1613 1663
… …
1658#endif 1708#endif
1659#if EV_USE_SIGNALFD 1709#if EV_USE_SIGNALFD
1660 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 1710 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1661#endif 1711#endif
1662 1712
1663 if (!(flags & 0x0000ffffU)) 1713 if (!(flags & EVBACKEND_MASK))
1664 flags |= ev_recommended_backends (); 1714 flags |= ev_recommended_backends ();
1665 1715
1716#if EV_USE_IOCP
1717 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1718#endif
1666#if EV_USE_PORT 1719#if EV_USE_PORT
1667 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1720 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1668#endif 1721#endif
1669#if EV_USE_KQUEUE 1722#if EV_USE_KQUEUE
1670 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1723 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1687#endif 1740#endif
1688 } 1741 }
1689} 1742}
1690 1743
1691/* free up a loop structure */ 1744/* free up a loop structure */
1692static void noinline 1745void
1693loop_destroy (EV_P) 1746ev_loop_destroy (EV_P)
1694{ 1747{
1695 int i; 1748 int i;
1749
1750#if EV_MULTIPLICITY
1751 /* mimic free (0) */
1752 if (!EV_A)
1753 return;
1754#endif
1755
1756#if EV_CLEANUP_ENABLE
1757 /* queue cleanup watchers (and execute them) */
1758 if (expect_false (cleanupcnt))
1759 {
1760 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1761 EV_INVOKE_PENDING;
1762 }
1763#endif
1764
1765#if EV_CHILD_ENABLE
1766 if (ev_is_active (&childev))
1767 {
1768 ev_ref (EV_A); /* child watcher */
1769 ev_signal_stop (EV_A_ &childev);
1770 }
1771#endif
1696 1772
1697 if (ev_is_active (&pipe_w)) 1773 if (ev_is_active (&pipe_w))
1698 { 1774 {
1699 /*ev_ref (EV_A);*/ 1775 /*ev_ref (EV_A);*/
1700 /*ev_io_stop (EV_A_ &pipe_w);*/ 1776 /*ev_io_stop (EV_A_ &pipe_w);*/
… …
1722#endif 1798#endif
1723 1799
1724 if (backend_fd >= 0) 1800 if (backend_fd >= 0)
1725 close (backend_fd); 1801 close (backend_fd);
1726 1802
1803#if EV_USE_IOCP
1804 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1805#endif
1727#if EV_USE_PORT 1806#if EV_USE_PORT
1728 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1807 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1729#endif 1808#endif
1730#if EV_USE_KQUEUE 1809#if EV_USE_KQUEUE
1731 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 1810 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1758 array_free (periodic, EMPTY); 1837 array_free (periodic, EMPTY);
1759#endif 1838#endif
1760#if EV_FORK_ENABLE 1839#if EV_FORK_ENABLE
1761 array_free (fork, EMPTY); 1840 array_free (fork, EMPTY);
1762#endif 1841#endif
1842#if EV_CLEANUP_ENABLE
1843 array_free (cleanup, EMPTY);
1844#endif
1763 array_free (prepare, EMPTY); 1845 array_free (prepare, EMPTY);
1764 array_free (check, EMPTY); 1846 array_free (check, EMPTY);
1765#if EV_ASYNC_ENABLE 1847#if EV_ASYNC_ENABLE
1766 array_free (async, EMPTY); 1848 array_free (async, EMPTY);
1767#endif 1849#endif
1768 1850
1769 backend = 0; 1851 backend = 0;
1852
1853#if EV_MULTIPLICITY
1854 if (ev_is_default_loop (EV_A))
1855#endif
1856 ev_default_loop_ptr = 0;
1857#if EV_MULTIPLICITY
1858 else
1859 ev_free (EV_A);
1860#endif
1770} 1861}
1771 1862
1772#if EV_USE_INOTIFY 1863#if EV_USE_INOTIFY
1773inline_size void infy_fork (EV_P); 1864inline_size void infy_fork (EV_P);
1774#endif 1865#endif
… …
1833 loop_init (EV_A_ flags); 1924 loop_init (EV_A_ flags);
1834 1925
1835 if (ev_backend (EV_A)) 1926 if (ev_backend (EV_A))
1836 return EV_A; 1927 return EV_A;
1837 1928
1929 ev_free (EV_A);
1838 return 0; 1930 return 0;
1839} 1931}
1840 1932
1841void
1842ev_loop_destroy (EV_P)
1843{
1844 loop_destroy (EV_A);
1845 ev_free (loop);
1846}
1847
1848void
1849ev_loop_fork (EV_P)
1850{
1851 postfork = 1; /* must be in line with ev_default_fork */
1852}
1853#endif /* multiplicity */ 1933#endif /* multiplicity */
1854 1934
1855#if EV_VERIFY 1935#if EV_VERIFY
1856static void noinline 1936static void noinline
1857verify_watcher (EV_P_ W w) 1937verify_watcher (EV_P_ W w)
… …
1932#if EV_FORK_ENABLE 2012#if EV_FORK_ENABLE
1933 assert (forkmax >= forkcnt); 2013 assert (forkmax >= forkcnt);
1934 array_verify (EV_A_ (W *)forks, forkcnt); 2014 array_verify (EV_A_ (W *)forks, forkcnt);
1935#endif 2015#endif
1936 2016
2017#if EV_CLEANUP_ENABLE
2018 assert (cleanupmax >= cleanupcnt);
2019 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2020#endif
2021
1937#if EV_ASYNC_ENABLE 2022#if EV_ASYNC_ENABLE
1938 assert (asyncmax >= asynccnt); 2023 assert (asyncmax >= asynccnt);
1939 array_verify (EV_A_ (W *)asyncs, asynccnt); 2024 array_verify (EV_A_ (W *)asyncs, asynccnt);
1940#endif 2025#endif
1941 2026
… …
1959} 2044}
1960#endif 2045#endif
1961 2046
1962#if EV_MULTIPLICITY 2047#if EV_MULTIPLICITY
1963struct ev_loop * 2048struct ev_loop *
1964ev_default_loop_init (unsigned int flags)
1965#else 2049#else
1966int 2050int
2051#endif
1967ev_default_loop (unsigned int flags) 2052ev_default_loop (unsigned int flags)
1968#endif
1969{ 2053{
1970 if (!ev_default_loop_ptr) 2054 if (!ev_default_loop_ptr)
1971 { 2055 {
1972#if EV_MULTIPLICITY 2056#if EV_MULTIPLICITY
1973 EV_P = ev_default_loop_ptr = &default_loop_struct; 2057 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1992 2076
1993 return ev_default_loop_ptr; 2077 return ev_default_loop_ptr;
1994} 2078}
1995 2079
1996void 2080void
1997ev_default_destroy (void) 2081ev_loop_fork (EV_P)
1998{ 2082{
1999#if EV_MULTIPLICITY
2000 EV_P = ev_default_loop_ptr;
2001#endif
2002
2003 ev_default_loop_ptr = 0;
2004
2005#if EV_CHILD_ENABLE
2006 ev_ref (EV_A); /* child watcher */
2007 ev_signal_stop (EV_A_ &childev);
2008#endif
2009
2010 loop_destroy (EV_A);
2011}
2012
2013void
2014ev_default_fork (void)
2015{
2016#if EV_MULTIPLICITY
2017 EV_P = ev_default_loop_ptr;
2018#endif
2019
2020 postfork = 1; /* must be in line with ev_loop_fork */ 2083 postfork = 1; /* must be in line with ev_default_fork */
2021} 2084}
2022 2085
2023/*****************************************************************************/ 2086/*****************************************************************************/
2024 2087
2025void 2088void
… …
2285 mn_now = ev_rt_now; 2348 mn_now = ev_rt_now;
2286 } 2349 }
2287} 2350}
2288 2351
2289void 2352void
2290ev_loop (EV_P_ int flags) 2353ev_run (EV_P_ int flags)
2291{ 2354{
2292#if EV_FEATURE_API 2355#if EV_FEATURE_API
2293 ++loop_depth; 2356 ++loop_depth;
2294#endif 2357#endif
2295 2358
2296 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 2359 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2297 2360
2298 loop_done = EVUNLOOP_CANCEL; 2361 loop_done = EVBREAK_CANCEL;
2299 2362
2300 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 2363 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2301 2364
2302 do 2365 do
2303 { 2366 {
… …
2346 /* calculate blocking time */ 2409 /* calculate blocking time */
2347 { 2410 {
2348 ev_tstamp waittime = 0.; 2411 ev_tstamp waittime = 0.;
2349 ev_tstamp sleeptime = 0.; 2412 ev_tstamp sleeptime = 0.;
2350 2413
2414 /* remember old timestamp for io_blocktime calculation */
2415 ev_tstamp prev_mn_now = mn_now;
2416
2417 /* update time to cancel out callback processing overhead */
2418 time_update (EV_A_ 1e100);
2419
2351 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2420 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt)))
2352 { 2421 {
2353 /* remember old timestamp for io_blocktime calculation */
2354 ev_tstamp prev_mn_now = mn_now;
2355
2356 /* update time to cancel out callback processing overhead */
2357 time_update (EV_A_ 1e100);
2358
2359 waittime = MAX_BLOCKTIME; 2422 waittime = MAX_BLOCKTIME;
2360 2423
2361 if (timercnt) 2424 if (timercnt)
2362 { 2425 {
2363 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2426 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
… …
2393 } 2456 }
2394 2457
2395#if EV_FEATURE_API 2458#if EV_FEATURE_API
2396 ++loop_count; 2459 ++loop_count;
2397#endif 2460#endif
2398 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 2461 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2399 backend_poll (EV_A_ waittime); 2462 backend_poll (EV_A_ waittime);
2400 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 2463 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2401 2464
2402 /* update ev_rt_now, do magic */ 2465 /* update ev_rt_now, do magic */
2403 time_update (EV_A_ waittime + sleeptime); 2466 time_update (EV_A_ waittime + sleeptime);
2404 } 2467 }
2405 2468
… …
2423 EV_INVOKE_PENDING; 2486 EV_INVOKE_PENDING;
2424 } 2487 }
2425 while (expect_true ( 2488 while (expect_true (
2426 activecnt 2489 activecnt
2427 && !loop_done 2490 && !loop_done
2428 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2491 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2429 )); 2492 ));
2430 2493
2431 if (loop_done == EVUNLOOP_ONE) 2494 if (loop_done == EVBREAK_ONE)
2432 loop_done = EVUNLOOP_CANCEL; 2495 loop_done = EVBREAK_CANCEL;
2433 2496
2434#if EV_FEATURE_API 2497#if EV_FEATURE_API
2435 --loop_depth; 2498 --loop_depth;
2436#endif 2499#endif
2437} 2500}
2438 2501
2439void 2502void
2440ev_unloop (EV_P_ int how) 2503ev_break (EV_P_ int how)
2441{ 2504{
2442 loop_done = how; 2505 loop_done = how;
2443} 2506}
2444 2507
2445void 2508void
… …
2593 EV_FREQUENT_CHECK; 2656 EV_FREQUENT_CHECK;
2594 2657
2595 wlist_del (&anfds[w->fd].head, (WL)w); 2658 wlist_del (&anfds[w->fd].head, (WL)w);
2596 ev_stop (EV_A_ (W)w); 2659 ev_stop (EV_A_ (W)w);
2597 2660
2598 fd_change (EV_A_ w->fd, 1); 2661 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2599 2662
2600 EV_FREQUENT_CHECK; 2663 EV_FREQUENT_CHECK;
2601} 2664}
2602 2665
2603void noinline 2666void noinline
… …
2827 sa.sa_handler = ev_sighandler; 2890 sa.sa_handler = ev_sighandler;
2828 sigfillset (&sa.sa_mask); 2891 sigfillset (&sa.sa_mask);
2829 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2892 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2830 sigaction (w->signum, &sa, 0); 2893 sigaction (w->signum, &sa, 0);
2831 2894
2895 if (origflags & EVFLAG_NOSIGMASK)
2896 {
2832 sigemptyset (&sa.sa_mask); 2897 sigemptyset (&sa.sa_mask);
2833 sigaddset (&sa.sa_mask, w->signum); 2898 sigaddset (&sa.sa_mask, w->signum);
2834 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 2899 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2900 }
2835#endif 2901#endif
2836 } 2902 }
2837 2903
2838 EV_FREQUENT_CHECK; 2904 EV_FREQUENT_CHECK;
2839} 2905}
… …
3055 { 3121 {
3056 struct inotify_event *ev = (struct inotify_event *)(buf + ofs); 3122 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
3057 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3123 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3058 ofs += sizeof (struct inotify_event) + ev->len; 3124 ofs += sizeof (struct inotify_event) + ev->len;
3059 } 3125 }
3060}
3061
3062inline_size unsigned int
3063ev_linux_version (void)
3064{
3065 struct utsname buf;
3066 unsigned int v;
3067 int i;
3068 char *p = buf.release;
3069
3070 if (uname (&buf))
3071 return 0;
3072
3073 for (i = 3+1; --i; )
3074 {
3075 unsigned int c = 0;
3076
3077 for (;;)
3078 {
3079 if (*p >= '0' && *p <= '9')
3080 c = c * 10 + *p++ - '0';
3081 else
3082 {
3083 p += *p == '.';
3084 break;
3085 }
3086 }
3087
3088 v = (v << 8) | c;
3089 }
3090
3091 return v;
3092} 3126}
3093 3127
3094inline_size void 3128inline_size void
3095ev_check_2625 (EV_P) 3129ev_check_2625 (EV_P)
3096{ 3130{
… …
3420 3454
3421#if EV_EMBED_ENABLE 3455#if EV_EMBED_ENABLE
3422void noinline 3456void noinline
3423ev_embed_sweep (EV_P_ ev_embed *w) 3457ev_embed_sweep (EV_P_ ev_embed *w)
3424{ 3458{
3425 ev_loop (w->other, EVLOOP_NONBLOCK); 3459 ev_run (w->other, EVRUN_NOWAIT);
3426} 3460}
3427 3461
3428static void 3462static void
3429embed_io_cb (EV_P_ ev_io *io, int revents) 3463embed_io_cb (EV_P_ ev_io *io, int revents)
3430{ 3464{
3431 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3465 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3432 3466
3433 if (ev_cb (w)) 3467 if (ev_cb (w))
3434 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3468 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3435 else 3469 else
3436 ev_loop (w->other, EVLOOP_NONBLOCK); 3470 ev_run (w->other, EVRUN_NOWAIT);
3437} 3471}
3438 3472
3439static void 3473static void
3440embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3474embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3441{ 3475{
… …
3445 EV_P = w->other; 3479 EV_P = w->other;
3446 3480
3447 while (fdchangecnt) 3481 while (fdchangecnt)
3448 { 3482 {
3449 fd_reify (EV_A); 3483 fd_reify (EV_A);
3450 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3484 ev_run (EV_A_ EVRUN_NOWAIT);
3451 } 3485 }
3452 } 3486 }
3453} 3487}
3454 3488
3455static void 3489static void
… …
3461 3495
3462 { 3496 {
3463 EV_P = w->other; 3497 EV_P = w->other;
3464 3498
3465 ev_loop_fork (EV_A); 3499 ev_loop_fork (EV_A);
3466 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3500 ev_run (EV_A_ EVRUN_NOWAIT);
3467 } 3501 }
3468 3502
3469 ev_embed_start (EV_A_ w); 3503 ev_embed_start (EV_A_ w);
3470} 3504}
3471 3505
… …
3563 3597
3564 EV_FREQUENT_CHECK; 3598 EV_FREQUENT_CHECK;
3565} 3599}
3566#endif 3600#endif
3567 3601
3568#if EV_ASYNC_ENABLE 3602#if EV_CLEANUP_ENABLE
3569void 3603void
3570ev_async_start (EV_P_ ev_async *w) 3604ev_cleanup_start (EV_P_ ev_cleanup *w)
3571{ 3605{
3572 if (expect_false (ev_is_active (w))) 3606 if (expect_false (ev_is_active (w)))
3573 return; 3607 return;
3608
3609 EV_FREQUENT_CHECK;
3610
3611 ev_start (EV_A_ (W)w, ++cleanupcnt);
3612 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
3613 cleanups [cleanupcnt - 1] = w;
3614
3615 /* cleanup watchers should never keep a refcount on the loop */
3616 ev_unref (EV_A);
3617 EV_FREQUENT_CHECK;
3618}
3619
3620void
3621ev_cleanup_stop (EV_P_ ev_cleanup *w)
3622{
3623 clear_pending (EV_A_ (W)w);
3624 if (expect_false (!ev_is_active (w)))
3625 return;
3626
3627 EV_FREQUENT_CHECK;
3628 ev_ref (EV_A);
3629
3630 {
3631 int active = ev_active (w);
3632
3633 cleanups [active - 1] = cleanups [--cleanupcnt];
3634 ev_active (cleanups [active - 1]) = active;
3635 }
3636
3637 ev_stop (EV_A_ (W)w);
3638
3639 EV_FREQUENT_CHECK;
3640}
3641#endif
3642
3643#if EV_ASYNC_ENABLE
3644void
3645ev_async_start (EV_P_ ev_async *w)
3646{
3647 if (expect_false (ev_is_active (w)))
3648 return;
3649
3650 w->sent = 0;
3574 3651
3575 evpipe_init (EV_A); 3652 evpipe_init (EV_A);
3576 3653
3577 EV_FREQUENT_CHECK; 3654 EV_FREQUENT_CHECK;
3578 3655
… …
3798 3875
3799#if EV_MULTIPLICITY 3876#if EV_MULTIPLICITY
3800 #include "ev_wrap.h" 3877 #include "ev_wrap.h"
3801#endif 3878#endif
3802 3879
3803#ifdef __cplusplus 3880EV_CPP(})
3804}
3805#endif
3806 3881

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