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Comparing libev/ev.c (file contents):
Revision 1.343 by root, Fri Apr 2 21:03:46 2010 UTC vs.
Revision 1.364 by root, Sun Oct 24 21:51:03 2010 UTC

… …
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 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
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
48# else 44# else
… …
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
… …
195# ifndef EV_SELECT_IS_WINSOCKET 193# ifndef EV_SELECT_IS_WINSOCKET
196# define EV_SELECT_IS_WINSOCKET 1 194# define EV_SELECT_IS_WINSOCKET 1
197# endif 195# endif
198# undef EV_AVOID_STDIO 196# undef EV_AVOID_STDIO
199#endif 197#endif
198
199/* OS X, in its infinite idiocy, actually HARDCODES
200 * a limit of 1024 into their select. Where people have brains,
201 * OS X engineers apparently have a vacuum. Or maybe they were
202 * ordered to have a vacuum, or they do anything for money.
203 * This might help. Or not.
204 */
205#define _DARWIN_UNLIMITED_SELECT 1
200 206
201/* this block tries to deduce configuration from header-defined symbols and defaults */ 207/* this block tries to deduce configuration from header-defined symbols and defaults */
202 208
203/* try to deduce the maximum number of signals on this platform */ 209/* try to deduce the maximum number of signals on this platform */
204#if defined (EV_NSIG) 210#if defined (EV_NSIG)
… …
376# include <sys/select.h> 382# include <sys/select.h>
377# endif 383# endif
378#endif 384#endif
379 385
380#if EV_USE_INOTIFY 386#if EV_USE_INOTIFY
381# include <sys/utsname.h>
382# include <sys/statfs.h> 387# include <sys/statfs.h>
383# include <sys/inotify.h> 388# include <sys/inotify.h>
384/* 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 */
385# ifndef IN_DONT_FOLLOW 390# ifndef IN_DONT_FOLLOW
386# undef EV_USE_INOTIFY 391# undef EV_USE_INOTIFY
… …
403# define EFD_CLOEXEC O_CLOEXEC 408# define EFD_CLOEXEC O_CLOEXEC
404# else 409# else
405# define EFD_CLOEXEC 02000000 410# define EFD_CLOEXEC 02000000
406# endif 411# endif
407# endif 412# endif
408# ifdef __cplusplus
409extern "C" {
410# endif
411int (eventfd) (unsigned int initval, int flags); 413EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
412# ifdef __cplusplus
413}
414# endif
415#endif 414#endif
416 415
417#if EV_USE_SIGNALFD 416#if EV_USE_SIGNALFD
418/* 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 */
419# include <stdint.h> 418# include <stdint.h>
… …
425# define SFD_CLOEXEC O_CLOEXEC 424# define SFD_CLOEXEC O_CLOEXEC
426# else 425# else
427# define SFD_CLOEXEC 02000000 426# define SFD_CLOEXEC 02000000
428# endif 427# endif
429# endif 428# endif
430# ifdef __cplusplus
431extern "C" {
432# endif
433int signalfd (int fd, const sigset_t *mask, int flags); 429EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
434 430
435struct signalfd_siginfo 431struct signalfd_siginfo
436{ 432{
437 uint32_t ssi_signo; 433 uint32_t ssi_signo;
438 char pad[128 - sizeof (uint32_t)]; 434 char pad[128 - sizeof (uint32_t)];
439}; 435};
440# ifdef __cplusplus
441}
442# endif 436#endif
443#endif
444
445 437
446/**/ 438/**/
447 439
448#if EV_VERIFY >= 3 440#if EV_VERIFY >= 3
449# define EV_FREQUENT_CHECK ev_verify (EV_A) 441# define EV_FREQUENT_CHECK ev_verify (EV_A)
… …
462#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 454#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
463 455
464#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) */
465#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) */
466 458
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
467#if __GNUC__ >= 4 462#if __GNUC__ >= 4
468# define expect(expr,value) __builtin_expect ((expr),(value)) 463# define expect(expr,value) __builtin_expect ((expr),(value))
469# define noinline __attribute__ ((noinline)) 464# define noinline __attribute__ ((noinline))
470#else 465#else
471# define expect(expr,value) (expr) 466# define expect(expr,value) (expr)
… …
503#define ev_active(w) ((W)(w))->active 498#define ev_active(w) ((W)(w))->active
504#define ev_at(w) ((WT)(w))->at 499#define ev_at(w) ((WT)(w))->at
505 500
506#if EV_USE_REALTIME 501#if EV_USE_REALTIME
507/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 502/* sig_atomic_t is used to avoid per-thread variables or locking but still */
508/* giving it a reasonably high chance of working on typical architetcures */ 503/* giving it a reasonably high chance of working on typical architectures */
509static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 504static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
510#endif 505#endif
511 506
512#if EV_USE_MONOTONIC 507#if EV_USE_MONOTONIC
513static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 508static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
… …
524#endif 519#endif
525 520
526#ifdef _WIN32 521#ifdef _WIN32
527# include "ev_win32.c" 522# include "ev_win32.c"
528#endif 523#endif
524
525/*****************************************************************************/
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}
529 566
530/*****************************************************************************/ 567/*****************************************************************************/
531 568
532#if EV_AVOID_STDIO 569#if EV_AVOID_STDIO
533static void noinline 570static void noinline
… …
631 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 668 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
632 unsigned char unused; 669 unsigned char unused;
633#if EV_USE_EPOLL 670#if EV_USE_EPOLL
634 unsigned int egen; /* generation counter to counter epoll bugs */ 671 unsigned int egen; /* generation counter to counter epoll bugs */
635#endif 672#endif
636#if EV_SELECT_IS_WINSOCKET 673#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
637 SOCKET handle; 674 SOCKET handle;
675#endif
676#if EV_USE_IOCP
677 OVERLAPPED or, ow;
638#endif 678#endif
639} ANFD; 679} ANFD;
640 680
641/* stores the pending event set for a given watcher */ 681/* stores the pending event set for a given watcher */
642typedef struct 682typedef struct
… …
707# define EV_RELEASE_CB (void)0 747# define EV_RELEASE_CB (void)0
708# define EV_ACQUIRE_CB (void)0 748# define EV_ACQUIRE_CB (void)0
709# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 749# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
710#endif 750#endif
711 751
712#define EVUNLOOP_RECURSE 0x80 752#define EVBREAK_RECURSE 0x80
713 753
714/*****************************************************************************/ 754/*****************************************************************************/
715 755
716#ifndef EV_HAVE_EV_TIME 756#ifndef EV_HAVE_EV_TIME
717ev_tstamp 757ev_tstamp
… …
761 if (delay > 0.) 801 if (delay > 0.)
762 { 802 {
763#if EV_USE_NANOSLEEP 803#if EV_USE_NANOSLEEP
764 struct timespec ts; 804 struct timespec ts;
765 805
766 ts.tv_sec = (time_t)delay; 806 EV_TS_SET (ts, delay);
767 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
768
769 nanosleep (&ts, 0); 807 nanosleep (&ts, 0);
770#elif defined(_WIN32) 808#elif defined(_WIN32)
771 Sleep ((unsigned long)(delay * 1e3)); 809 Sleep ((unsigned long)(delay * 1e3));
772#else 810#else
773 struct timeval tv; 811 struct timeval tv;
774 812
775 tv.tv_sec = (time_t)delay;
776 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
777
778 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 813 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
779 /* something not guaranteed by newer posix versions, but guaranteed */ 814 /* something not guaranteed by newer posix versions, but guaranteed */
780 /* by older ones */ 815 /* by older ones */
816 EV_TV_SET (tv, delay);
781 select (0, 0, 0, 0, &tv); 817 select (0, 0, 0, 0, &tv);
782#endif 818#endif
783 } 819 }
784} 820}
785 821
786/*****************************************************************************/ 822/*****************************************************************************/
787 823
788#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 824#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
789 825
790/* find a suitable new size for the given array, */ 826/* find a suitable new size for the given array, */
791/* hopefully by rounding to a ncie-to-malloc size */ 827/* hopefully by rounding to a nice-to-malloc size */
792inline_size int 828inline_size int
793array_nextsize (int elem, int cur, int cnt) 829array_nextsize (int elem, int cur, int cnt)
794{ 830{
795 int ncur = cur + 1; 831 int ncur = cur + 1;
796 832
… …
937 { 973 {
938 int fd = fdchanges [i]; 974 int fd = fdchanges [i];
939 ANFD *anfd = anfds + fd; 975 ANFD *anfd = anfds + fd;
940 ev_io *w; 976 ev_io *w;
941 977
942 unsigned char events = 0; 978 unsigned char o_events = anfd->events;
979 unsigned char o_reify = anfd->reify;
943 980
944 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 981 anfd->reify = 0;
945 events |= (unsigned char)w->events;
946 982
947#if EV_SELECT_IS_WINSOCKET 983#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
948 if (events) 984 if (o_reify & EV__IOFDSET)
949 { 985 {
950 unsigned long arg; 986 unsigned long arg;
951 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 987 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
952 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 988 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
989 printf ("oi %d %x\n", fd, anfd->handle);//D
953 } 990 }
954#endif 991#endif
955 992
993 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
956 { 994 {
957 unsigned char o_events = anfd->events;
958 unsigned char o_reify = anfd->reify;
959
960 anfd->reify = 0;
961 anfd->events = events; 995 anfd->events = 0;
962 996
963 if (o_events != events || o_reify & EV__IOFDSET) 997 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
998 anfd->events |= (unsigned char)w->events;
999
1000 if (o_events != anfd->events)
1001 o_reify = EV__IOFDSET; /* actually |= */
1002 }
1003
1004 if (o_reify & EV__IOFDSET)
964 backend_modify (EV_A_ fd, o_events, events); 1005 backend_modify (EV_A_ fd, o_events, anfd->events);
965 }
966 } 1006 }
967 1007
968 fdchangecnt = 0; 1008 fdchangecnt = 0;
969} 1009}
970 1010
… …
1063} 1103}
1064 1104
1065/*****************************************************************************/ 1105/*****************************************************************************/
1066 1106
1067/* 1107/*
1068 * the heap functions want a real array index. array index 0 uis guaranteed to not 1108 * the heap functions want a real array index. array index 0 is guaranteed to not
1069 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1109 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1070 * the branching factor of the d-tree. 1110 * the branching factor of the d-tree.
1071 */ 1111 */
1072 1112
1073/* 1113/*
… …
1273 uint64_t counter = 1; 1313 uint64_t counter = 1;
1274 write (evfd, &counter, sizeof (uint64_t)); 1314 write (evfd, &counter, sizeof (uint64_t));
1275 } 1315 }
1276 else 1316 else
1277#endif 1317#endif
1318 /* win32 people keep sending patches that change this write() to send() */
1319 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1320 /* so when you think this write should be a send instead, please find out */
1321 /* where your send() is from - it's definitely not the microsoft send, and */
1322 /* tell me. thank you. */
1278 write (evpipe [1], &dummy, 1); 1323 write (evpipe [1], &dummy, 1);
1279 1324
1280 errno = old_errno; 1325 errno = old_errno;
1281 } 1326 }
1282} 1327}
… …
1296 } 1341 }
1297 else 1342 else
1298#endif 1343#endif
1299 { 1344 {
1300 char dummy; 1345 char dummy;
1346 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1301 read (evpipe [0], &dummy, 1); 1347 read (evpipe [0], &dummy, 1);
1302 } 1348 }
1303 1349
1304 if (sig_pending) 1350 if (sig_pending)
1305 { 1351 {
… …
1447 1493
1448#endif 1494#endif
1449 1495
1450/*****************************************************************************/ 1496/*****************************************************************************/
1451 1497
1498#if EV_USE_IOCP
1499# include "ev_iocp.c"
1500#endif
1452#if EV_USE_PORT 1501#if EV_USE_PORT
1453# include "ev_port.c" 1502# include "ev_port.c"
1454#endif 1503#endif
1455#if EV_USE_KQUEUE 1504#if EV_USE_KQUEUE
1456# include "ev_kqueue.c" 1505# include "ev_kqueue.c"
… …
1529ev_embeddable_backends (void) 1578ev_embeddable_backends (void)
1530{ 1579{
1531 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1580 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1532 1581
1533 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 1582 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1534 /* please fix it and tell me how to detect the fix */ 1583 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1535 flags &= ~EVBACKEND_EPOLL; 1584 flags &= ~EVBACKEND_EPOLL;
1536 1585
1537 return flags; 1586 return flags;
1538} 1587}
1539 1588
1540unsigned int 1589unsigned int
… …
1653#endif 1702#endif
1654 1703
1655 if (!(flags & 0x0000ffffU)) 1704 if (!(flags & 0x0000ffffU))
1656 flags |= ev_recommended_backends (); 1705 flags |= ev_recommended_backends ();
1657 1706
1707#if EV_USE_IOCP
1708 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1709#endif
1658#if EV_USE_PORT 1710#if EV_USE_PORT
1659 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1711 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1660#endif 1712#endif
1661#if EV_USE_KQUEUE 1713#if EV_USE_KQUEUE
1662 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1714 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1679#endif 1731#endif
1680 } 1732 }
1681} 1733}
1682 1734
1683/* free up a loop structure */ 1735/* free up a loop structure */
1684static void noinline 1736void
1685loop_destroy (EV_P) 1737ev_loop_destroy (EV_P)
1686{ 1738{
1687 int i; 1739 int i;
1740
1741#if EV_MULTIPLICITY
1742 /* mimic free (0) */
1743 if (!EV_A)
1744 return;
1745#endif
1746
1747#if EV_CLEANUP_ENABLE
1748 /* queue cleanup watchers (and execute them) */
1749 if (expect_false (cleanupcnt))
1750 {
1751 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1752 EV_INVOKE_PENDING;
1753 }
1754#endif
1755
1756#if EV_CHILD_ENABLE
1757 if (ev_is_active (&childev))
1758 {
1759 ev_ref (EV_A); /* child watcher */
1760 ev_signal_stop (EV_A_ &childev);
1761 }
1762#endif
1688 1763
1689 if (ev_is_active (&pipe_w)) 1764 if (ev_is_active (&pipe_w))
1690 { 1765 {
1691 /*ev_ref (EV_A);*/ 1766 /*ev_ref (EV_A);*/
1692 /*ev_io_stop (EV_A_ &pipe_w);*/ 1767 /*ev_io_stop (EV_A_ &pipe_w);*/
… …
1714#endif 1789#endif
1715 1790
1716 if (backend_fd >= 0) 1791 if (backend_fd >= 0)
1717 close (backend_fd); 1792 close (backend_fd);
1718 1793
1794#if EV_USE_IOCP
1795 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1796#endif
1719#if EV_USE_PORT 1797#if EV_USE_PORT
1720 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1798 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1721#endif 1799#endif
1722#if EV_USE_KQUEUE 1800#if EV_USE_KQUEUE
1723 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 1801 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1750 array_free (periodic, EMPTY); 1828 array_free (periodic, EMPTY);
1751#endif 1829#endif
1752#if EV_FORK_ENABLE 1830#if EV_FORK_ENABLE
1753 array_free (fork, EMPTY); 1831 array_free (fork, EMPTY);
1754#endif 1832#endif
1833#if EV_CLEANUP_ENABLE
1834 array_free (cleanup, EMPTY);
1835#endif
1755 array_free (prepare, EMPTY); 1836 array_free (prepare, EMPTY);
1756 array_free (check, EMPTY); 1837 array_free (check, EMPTY);
1757#if EV_ASYNC_ENABLE 1838#if EV_ASYNC_ENABLE
1758 array_free (async, EMPTY); 1839 array_free (async, EMPTY);
1759#endif 1840#endif
1760 1841
1761 backend = 0; 1842 backend = 0;
1843
1844#if EV_MULTIPLICITY
1845 if (ev_is_default_loop (EV_A))
1846#endif
1847 ev_default_loop_ptr = 0;
1848#if EV_MULTIPLICITY
1849 else
1850 ev_free (EV_A);
1851#endif
1762} 1852}
1763 1853
1764#if EV_USE_INOTIFY 1854#if EV_USE_INOTIFY
1765inline_size void infy_fork (EV_P); 1855inline_size void infy_fork (EV_P);
1766#endif 1856#endif
… …
1825 loop_init (EV_A_ flags); 1915 loop_init (EV_A_ flags);
1826 1916
1827 if (ev_backend (EV_A)) 1917 if (ev_backend (EV_A))
1828 return EV_A; 1918 return EV_A;
1829 1919
1920 ev_free (EV_A);
1830 return 0; 1921 return 0;
1831} 1922}
1832 1923
1833void
1834ev_loop_destroy (EV_P)
1835{
1836 loop_destroy (EV_A);
1837 ev_free (loop);
1838}
1839
1840void
1841ev_loop_fork (EV_P)
1842{
1843 postfork = 1; /* must be in line with ev_default_fork */
1844}
1845#endif /* multiplicity */ 1924#endif /* multiplicity */
1846 1925
1847#if EV_VERIFY 1926#if EV_VERIFY
1848static void noinline 1927static void noinline
1849verify_watcher (EV_P_ W w) 1928verify_watcher (EV_P_ W w)
… …
1924#if EV_FORK_ENABLE 2003#if EV_FORK_ENABLE
1925 assert (forkmax >= forkcnt); 2004 assert (forkmax >= forkcnt);
1926 array_verify (EV_A_ (W *)forks, forkcnt); 2005 array_verify (EV_A_ (W *)forks, forkcnt);
1927#endif 2006#endif
1928 2007
2008#if EV_CLEANUP_ENABLE
2009 assert (cleanupmax >= cleanupcnt);
2010 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2011#endif
2012
1929#if EV_ASYNC_ENABLE 2013#if EV_ASYNC_ENABLE
1930 assert (asyncmax >= asynccnt); 2014 assert (asyncmax >= asynccnt);
1931 array_verify (EV_A_ (W *)asyncs, asynccnt); 2015 array_verify (EV_A_ (W *)asyncs, asynccnt);
1932#endif 2016#endif
1933 2017
… …
1951} 2035}
1952#endif 2036#endif
1953 2037
1954#if EV_MULTIPLICITY 2038#if EV_MULTIPLICITY
1955struct ev_loop * 2039struct ev_loop *
1956ev_default_loop_init (unsigned int flags)
1957#else 2040#else
1958int 2041int
2042#endif
1959ev_default_loop (unsigned int flags) 2043ev_default_loop (unsigned int flags)
1960#endif
1961{ 2044{
1962 if (!ev_default_loop_ptr) 2045 if (!ev_default_loop_ptr)
1963 { 2046 {
1964#if EV_MULTIPLICITY 2047#if EV_MULTIPLICITY
1965 EV_P = ev_default_loop_ptr = &default_loop_struct; 2048 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1984 2067
1985 return ev_default_loop_ptr; 2068 return ev_default_loop_ptr;
1986} 2069}
1987 2070
1988void 2071void
1989ev_default_destroy (void) 2072ev_loop_fork (EV_P)
1990{ 2073{
1991#if EV_MULTIPLICITY
1992 EV_P = ev_default_loop_ptr;
1993#endif
1994
1995 ev_default_loop_ptr = 0;
1996
1997#if EV_CHILD_ENABLE
1998 ev_ref (EV_A); /* child watcher */
1999 ev_signal_stop (EV_A_ &childev);
2000#endif
2001
2002 loop_destroy (EV_A);
2003}
2004
2005void
2006ev_default_fork (void)
2007{
2008#if EV_MULTIPLICITY
2009 EV_P = ev_default_loop_ptr;
2010#endif
2011
2012 postfork = 1; /* must be in line with ev_loop_fork */ 2074 postfork = 1; /* must be in line with ev_default_fork */
2013} 2075}
2014 2076
2015/*****************************************************************************/ 2077/*****************************************************************************/
2016 2078
2017void 2079void
… …
2171 feed_reverse_done (EV_A_ EV_PERIODIC); 2233 feed_reverse_done (EV_A_ EV_PERIODIC);
2172 } 2234 }
2173} 2235}
2174 2236
2175/* simply recalculate all periodics */ 2237/* simply recalculate all periodics */
2176/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2238/* TODO: maybe ensure that at least one event happens when jumping forward? */
2177static void noinline 2239static void noinline
2178periodics_reschedule (EV_P) 2240periodics_reschedule (EV_P)
2179{ 2241{
2180 int i; 2242 int i;
2181 2243
… …
2277 mn_now = ev_rt_now; 2339 mn_now = ev_rt_now;
2278 } 2340 }
2279} 2341}
2280 2342
2281void 2343void
2282ev_loop (EV_P_ int flags) 2344ev_run (EV_P_ int flags)
2283{ 2345{
2284#if EV_FEATURE_API 2346#if EV_FEATURE_API
2285 ++loop_depth; 2347 ++loop_depth;
2286#endif 2348#endif
2287 2349
2288 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 2350 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2289 2351
2290 loop_done = EVUNLOOP_CANCEL; 2352 loop_done = EVBREAK_CANCEL;
2291 2353
2292 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 2354 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2293 2355
2294 do 2356 do
2295 { 2357 {
… …
2338 /* calculate blocking time */ 2400 /* calculate blocking time */
2339 { 2401 {
2340 ev_tstamp waittime = 0.; 2402 ev_tstamp waittime = 0.;
2341 ev_tstamp sleeptime = 0.; 2403 ev_tstamp sleeptime = 0.;
2342 2404
2405 /* remember old timestamp for io_blocktime calculation */
2406 ev_tstamp prev_mn_now = mn_now;
2407
2408 /* update time to cancel out callback processing overhead */
2409 time_update (EV_A_ 1e100);
2410
2343 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2411 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt)))
2344 { 2412 {
2345 /* remember old timestamp for io_blocktime calculation */
2346 ev_tstamp prev_mn_now = mn_now;
2347
2348 /* update time to cancel out callback processing overhead */
2349 time_update (EV_A_ 1e100);
2350
2351 waittime = MAX_BLOCKTIME; 2413 waittime = MAX_BLOCKTIME;
2352 2414
2353 if (timercnt) 2415 if (timercnt)
2354 { 2416 {
2355 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2417 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
… …
2385 } 2447 }
2386 2448
2387#if EV_FEATURE_API 2449#if EV_FEATURE_API
2388 ++loop_count; 2450 ++loop_count;
2389#endif 2451#endif
2390 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 2452 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2391 backend_poll (EV_A_ waittime); 2453 backend_poll (EV_A_ waittime);
2392 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 2454 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2393 2455
2394 /* update ev_rt_now, do magic */ 2456 /* update ev_rt_now, do magic */
2395 time_update (EV_A_ waittime + sleeptime); 2457 time_update (EV_A_ waittime + sleeptime);
2396 } 2458 }
2397 2459
… …
2415 EV_INVOKE_PENDING; 2477 EV_INVOKE_PENDING;
2416 } 2478 }
2417 while (expect_true ( 2479 while (expect_true (
2418 activecnt 2480 activecnt
2419 && !loop_done 2481 && !loop_done
2420 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2482 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2421 )); 2483 ));
2422 2484
2423 if (loop_done == EVUNLOOP_ONE) 2485 if (loop_done == EVBREAK_ONE)
2424 loop_done = EVUNLOOP_CANCEL; 2486 loop_done = EVBREAK_CANCEL;
2425 2487
2426#if EV_FEATURE_API 2488#if EV_FEATURE_API
2427 --loop_depth; 2489 --loop_depth;
2428#endif 2490#endif
2429} 2491}
2430 2492
2431void 2493void
2432ev_unloop (EV_P_ int how) 2494ev_break (EV_P_ int how)
2433{ 2495{
2434 loop_done = how; 2496 loop_done = how;
2435} 2497}
2436 2498
2437void 2499void
… …
2585 EV_FREQUENT_CHECK; 2647 EV_FREQUENT_CHECK;
2586 2648
2587 wlist_del (&anfds[w->fd].head, (WL)w); 2649 wlist_del (&anfds[w->fd].head, (WL)w);
2588 ev_stop (EV_A_ (W)w); 2650 ev_stop (EV_A_ (W)w);
2589 2651
2590 fd_change (EV_A_ w->fd, 1); 2652 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2591 2653
2592 EV_FREQUENT_CHECK; 2654 EV_FREQUENT_CHECK;
2593} 2655}
2594 2656
2595void noinline 2657void noinline
… …
3047 { 3109 {
3048 struct inotify_event *ev = (struct inotify_event *)(buf + ofs); 3110 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
3049 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3111 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3050 ofs += sizeof (struct inotify_event) + ev->len; 3112 ofs += sizeof (struct inotify_event) + ev->len;
3051 } 3113 }
3052}
3053
3054inline_size unsigned int
3055ev_linux_version (void)
3056{
3057 struct utsname buf;
3058 unsigned int v;
3059 int i;
3060 char *p = buf.release;
3061
3062 if (uname (&buf))
3063 return 0;
3064
3065 for (i = 3+1; --i; )
3066 {
3067 unsigned int c = 0;
3068
3069 for (;;)
3070 {
3071 if (*p >= '0' && *p <= '9')
3072 c = c * 10 + *p++ - '0';
3073 else
3074 {
3075 p += *p == '.';
3076 break;
3077 }
3078 }
3079
3080 v = (v << 8) | c;
3081 }
3082
3083 return v;
3084} 3114}
3085 3115
3086inline_size void 3116inline_size void
3087ev_check_2625 (EV_P) 3117ev_check_2625 (EV_P)
3088{ 3118{
… …
3412 3442
3413#if EV_EMBED_ENABLE 3443#if EV_EMBED_ENABLE
3414void noinline 3444void noinline
3415ev_embed_sweep (EV_P_ ev_embed *w) 3445ev_embed_sweep (EV_P_ ev_embed *w)
3416{ 3446{
3417 ev_loop (w->other, EVLOOP_NONBLOCK); 3447 ev_run (w->other, EVRUN_NOWAIT);
3418} 3448}
3419 3449
3420static void 3450static void
3421embed_io_cb (EV_P_ ev_io *io, int revents) 3451embed_io_cb (EV_P_ ev_io *io, int revents)
3422{ 3452{
3423 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3453 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3424 3454
3425 if (ev_cb (w)) 3455 if (ev_cb (w))
3426 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3456 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3427 else 3457 else
3428 ev_loop (w->other, EVLOOP_NONBLOCK); 3458 ev_run (w->other, EVRUN_NOWAIT);
3429} 3459}
3430 3460
3431static void 3461static void
3432embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3462embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3433{ 3463{
… …
3437 EV_P = w->other; 3467 EV_P = w->other;
3438 3468
3439 while (fdchangecnt) 3469 while (fdchangecnt)
3440 { 3470 {
3441 fd_reify (EV_A); 3471 fd_reify (EV_A);
3442 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3472 ev_run (EV_A_ EVRUN_NOWAIT);
3443 } 3473 }
3444 } 3474 }
3445} 3475}
3446 3476
3447static void 3477static void
… …
3453 3483
3454 { 3484 {
3455 EV_P = w->other; 3485 EV_P = w->other;
3456 3486
3457 ev_loop_fork (EV_A); 3487 ev_loop_fork (EV_A);
3458 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3488 ev_run (EV_A_ EVRUN_NOWAIT);
3459 } 3489 }
3460 3490
3461 ev_embed_start (EV_A_ w); 3491 ev_embed_start (EV_A_ w);
3462} 3492}
3463 3493
… …
3555 3585
3556 EV_FREQUENT_CHECK; 3586 EV_FREQUENT_CHECK;
3557} 3587}
3558#endif 3588#endif
3559 3589
3560#if EV_ASYNC_ENABLE 3590#if EV_CLEANUP_ENABLE
3561void 3591void
3562ev_async_start (EV_P_ ev_async *w) 3592ev_cleanup_start (EV_P_ ev_cleanup *w)
3563{ 3593{
3564 if (expect_false (ev_is_active (w))) 3594 if (expect_false (ev_is_active (w)))
3565 return; 3595 return;
3596
3597 EV_FREQUENT_CHECK;
3598
3599 ev_start (EV_A_ (W)w, ++cleanupcnt);
3600 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
3601 cleanups [cleanupcnt - 1] = w;
3602
3603 /* cleanup watchers should never keep a refcount on the loop */
3604 ev_unref (EV_A);
3605 EV_FREQUENT_CHECK;
3606}
3607
3608void
3609ev_cleanup_stop (EV_P_ ev_cleanup *w)
3610{
3611 clear_pending (EV_A_ (W)w);
3612 if (expect_false (!ev_is_active (w)))
3613 return;
3614
3615 EV_FREQUENT_CHECK;
3616 ev_ref (EV_A);
3617
3618 {
3619 int active = ev_active (w);
3620
3621 cleanups [active - 1] = cleanups [--cleanupcnt];
3622 ev_active (cleanups [active - 1]) = active;
3623 }
3624
3625 ev_stop (EV_A_ (W)w);
3626
3627 EV_FREQUENT_CHECK;
3628}
3629#endif
3630
3631#if EV_ASYNC_ENABLE
3632void
3633ev_async_start (EV_P_ ev_async *w)
3634{
3635 if (expect_false (ev_is_active (w)))
3636 return;
3637
3638 w->sent = 0;
3566 3639
3567 evpipe_init (EV_A); 3640 evpipe_init (EV_A);
3568 3641
3569 EV_FREQUENT_CHECK; 3642 EV_FREQUENT_CHECK;
3570 3643
… …
3790 3863
3791#if EV_MULTIPLICITY 3864#if EV_MULTIPLICITY
3792 #include "ev_wrap.h" 3865 #include "ev_wrap.h"
3793#endif 3866#endif
3794 3867
3795#ifdef __cplusplus 3868EV_CPP(})
3796}
3797#endif
3798 3869

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