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Comparing libev/ev.c (file contents):
Revision 1.354 by root, Fri Oct 22 09:24:11 2010 UTC vs.
Revision 1.378 by root, Mon Jun 13 09:52:36 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 *
10 * 1. Redistributions of source code must retain the above copyright notice, 10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer. 11 * this list of conditions and the following disclaimer.
12 * 12 *
13 * 2. Redistributions in binary form must reproduce the above copyright 13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the 14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution. 15 * documentation and/or other materials provided with the distribution.
16 * 16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
… …
42# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
43# include EV_CONFIG_H 43# include EV_CONFIG_H
44# else 44# else
45# include "config.h" 45# include "config.h"
46# endif 46# endif
47
48#if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
52#endif
47 53
48# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
49# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
50# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
51# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
156# define EV_USE_EVENTFD 0 162# define EV_USE_EVENTFD 0
157# endif 163# endif
158 164
159#endif 165#endif
160 166
161#include <math.h>
162#include <stdlib.h> 167#include <stdlib.h>
163#include <string.h> 168#include <string.h>
164#include <fcntl.h> 169#include <fcntl.h>
165#include <stddef.h> 170#include <stddef.h>
166 171
… …
232/* to make it compile regardless, just remove the above line, */ 237/* to make it compile regardless, just remove the above line, */
233/* but consider reporting it, too! :) */ 238/* but consider reporting it, too! :) */
234# define EV_NSIG 65 239# define EV_NSIG 65
235#endif 240#endif
236 241
242#ifndef EV_USE_FLOOR
243# define EV_USE_FLOOR 0
244#endif
245
237#ifndef EV_USE_CLOCK_SYSCALL 246#ifndef EV_USE_CLOCK_SYSCALL
238# if __linux && __GLIBC__ >= 2 247# if __linux && __GLIBC__ >= 2
239# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 248# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
240# else 249# else
241# define EV_USE_CLOCK_SYSCALL 0 250# define EV_USE_CLOCK_SYSCALL 0
… …
376# undef EV_USE_INOTIFY 385# undef EV_USE_INOTIFY
377# define EV_USE_INOTIFY 0 386# define EV_USE_INOTIFY 0
378#endif 387#endif
379 388
380#if !EV_USE_NANOSLEEP 389#if !EV_USE_NANOSLEEP
381# ifndef _WIN32 390/* hp-ux has it in sys/time.h, which we unconditionally include above */
391# if !defined(_WIN32) && !defined(__hpux)
382# include <sys/select.h> 392# include <sys/select.h>
383# endif 393# endif
384#endif 394#endif
385 395
386#if EV_USE_INOTIFY 396#if EV_USE_INOTIFY
387# include <sys/utsname.h>
388# include <sys/statfs.h> 397# include <sys/statfs.h>
389# include <sys/inotify.h> 398# include <sys/inotify.h>
390/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 399/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
391# ifndef IN_DONT_FOLLOW 400# ifndef IN_DONT_FOLLOW
392# undef EV_USE_INOTIFY 401# undef EV_USE_INOTIFY
… …
443#else 452#else
444# define EV_FREQUENT_CHECK do { } while (0) 453# define EV_FREQUENT_CHECK do { } while (0)
445#endif 454#endif
446 455
447/* 456/*
448 * This is used to avoid floating point rounding problems. 457 * This is used to work around floating point rounding problems.
449 * It is added to ev_rt_now when scheduling periodics
450 * to ensure progress, time-wise, even when rounding
451 * errors are against us.
452 * This value is good at least till the year 4000. 458 * This value is good at least till the year 4000.
453 * Better solutions welcome.
454 */ 459 */
455#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 460#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
461/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
456 462
457#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 463#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
458#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 464#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
459 465
460#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) 466#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
… …
523# include "ev_win32.c" 529# include "ev_win32.c"
524#endif 530#endif
525 531
526/*****************************************************************************/ 532/*****************************************************************************/
527 533
534/* define a suitable floor function (only used by periodics atm) */
535
536#if EV_USE_FLOOR
537# include <math.h>
538# define ev_floor(v) floor (v)
539#else
540
541#include <float.h>
542
543/* a floor() replacement function, should be independent of ev_tstamp type */
544static ev_tstamp noinline
545ev_floor (ev_tstamp v)
546{
547 /* the choice of shift factor is not terribly important */
548#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
549 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
550#else
551 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
552#endif
553
554 /* argument too large for an unsigned long? */
555 if (expect_false (v >= shift))
556 {
557 ev_tstamp f;
558
559 if (v == v - 1.)
560 return v; /* very large number */
561
562 f = shift * ev_floor (v * (1. / shift));
563 return f + ev_floor (v - f);
564 }
565
566 /* special treatment for negative args? */
567 if (expect_false (v < 0.))
568 {
569 ev_tstamp f = -ev_floor (-v);
570
571 return f - (f == v ? 0 : 1);
572 }
573
574 /* fits into an unsigned long */
575 return (unsigned long)v;
576}
577
578#endif
579
580/*****************************************************************************/
581
582#ifdef __linux
583# include <sys/utsname.h>
584#endif
585
586static unsigned int noinline
587ev_linux_version (void)
588{
589#ifdef __linux
590 unsigned int v = 0;
591 struct utsname buf;
592 int i;
593 char *p = buf.release;
594
595 if (uname (&buf))
596 return 0;
597
598 for (i = 3+1; --i; )
599 {
600 unsigned int c = 0;
601
602 for (;;)
603 {
604 if (*p >= '0' && *p <= '9')
605 c = c * 10 + *p++ - '0';
606 else
607 {
608 p += *p == '.';
609 break;
610 }
611 }
612
613 v = (v << 8) | c;
614 }
615
616 return v;
617#else
618 return 0;
619#endif
620}
621
622/*****************************************************************************/
623
528#if EV_AVOID_STDIO 624#if EV_AVOID_STDIO
529static void noinline 625static void noinline
530ev_printerr (const char *msg) 626ev_printerr (const char *msg)
531{ 627{
532 write (STDERR_FILENO, msg, strlen (msg)); 628 write (STDERR_FILENO, msg, strlen (msg));
… …
550 if (syserr_cb) 646 if (syserr_cb)
551 syserr_cb (msg); 647 syserr_cb (msg);
552 else 648 else
553 { 649 {
554#if EV_AVOID_STDIO 650#if EV_AVOID_STDIO
555 const char *err = strerror (errno);
556
557 ev_printerr (msg); 651 ev_printerr (msg);
558 ev_printerr (": "); 652 ev_printerr (": ");
559 ev_printerr (err); 653 ev_printerr (strerror (errno));
560 ev_printerr ("\n"); 654 ev_printerr ("\n");
561#else 655#else
562 perror (msg); 656 perror (msg);
563#endif 657#endif
564 abort (); 658 abort ();
… …
598 ptr = alloc (ptr, size); 692 ptr = alloc (ptr, size);
599 693
600 if (!ptr && size) 694 if (!ptr && size)
601 { 695 {
602#if EV_AVOID_STDIO 696#if EV_AVOID_STDIO
603 ev_printerr ("libev: memory allocation failed, aborting.\n"); 697 ev_printerr ("(libev) memory allocation failed, aborting.\n");
604#else 698#else
605 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 699 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
606#endif 700#endif
607 abort (); 701 abort ();
608 } 702 }
609 703
610 return ptr; 704 return ptr;
… …
627 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 721 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
628 unsigned char unused; 722 unsigned char unused;
629#if EV_USE_EPOLL 723#if EV_USE_EPOLL
630 unsigned int egen; /* generation counter to counter epoll bugs */ 724 unsigned int egen; /* generation counter to counter epoll bugs */
631#endif 725#endif
632#if EV_SELECT_IS_WINSOCKET 726#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
633 SOCKET handle; 727 SOCKET handle;
728#endif
729#if EV_USE_IOCP
730 OVERLAPPED or, ow;
634#endif 731#endif
635} ANFD; 732} ANFD;
636 733
637/* stores the pending event set for a given watcher */ 734/* stores the pending event set for a given watcher */
638typedef struct 735typedef struct
… …
923inline_size void 1020inline_size void
924fd_reify (EV_P) 1021fd_reify (EV_P)
925{ 1022{
926 int i; 1023 int i;
927 1024
1025#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1026 for (i = 0; i < fdchangecnt; ++i)
1027 {
1028 int fd = fdchanges [i];
1029 ANFD *anfd = anfds + fd;
1030
1031 if (anfd->reify & EV__IOFDSET && anfd->head)
1032 {
1033 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1034
1035 if (handle != anfd->handle)
1036 {
1037 unsigned long arg;
1038
1039 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1040
1041 /* handle changed, but fd didn't - we need to do it in two steps */
1042 backend_modify (EV_A_ fd, anfd->events, 0);
1043 anfd->events = 0;
1044 anfd->handle = handle;
1045 }
1046 }
1047 }
1048#endif
1049
928 for (i = 0; i < fdchangecnt; ++i) 1050 for (i = 0; i < fdchangecnt; ++i)
929 { 1051 {
930 int fd = fdchanges [i]; 1052 int fd = fdchanges [i];
931 ANFD *anfd = anfds + fd; 1053 ANFD *anfd = anfds + fd;
932 ev_io *w; 1054 ev_io *w;
933 1055
934 unsigned char o_events = anfd->events; 1056 unsigned char o_events = anfd->events;
935 unsigned char o_reify = anfd->reify; 1057 unsigned char o_reify = anfd->reify;
936 1058
937 anfd->reify = 0; 1059 anfd->reify = 0;
938
939#if EV_SELECT_IS_WINSOCKET
940 if (o_reify & EV__IOFDSET)
941 {
942 unsigned long arg;
943 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
944 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
945 }
946#endif
947 1060
948 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 1061 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
949 { 1062 {
950 anfd->events = 0; 1063 anfd->events = 0;
951 1064
… …
1255inline_size void 1368inline_size void
1256evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1369evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1257{ 1370{
1258 if (!*flag) 1371 if (!*flag)
1259 { 1372 {
1260 int old_errno = errno; /* save errno because write might clobber it */
1261 char dummy;
1262
1263 *flag = 1; 1373 *flag = 1;
1264 1374
1375 pipe_write_skipped = 1;
1376
1377 if (pipe_write_wanted)
1378 {
1379 int old_errno = errno; /* save errno because write will clobber it */
1380 char dummy;
1381
1382 pipe_write_skipped = 0;
1383
1265#if EV_USE_EVENTFD 1384#if EV_USE_EVENTFD
1266 if (evfd >= 0) 1385 if (evfd >= 0)
1267 { 1386 {
1268 uint64_t counter = 1; 1387 uint64_t counter = 1;
1269 write (evfd, &counter, sizeof (uint64_t)); 1388 write (evfd, &counter, sizeof (uint64_t));
1389 }
1390 else
1391#endif
1392 {
1393 /* win32 people keep sending patches that change this write() to send() */
1394 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1395 /* so when you think this write should be a send instead, please find out */
1396 /* where your send() is from - it's definitely not the microsoft send, and */
1397 /* tell me. thank you. */
1398 write (evpipe [1], &dummy, 1);
1399 }
1400
1401 errno = old_errno;
1270 } 1402 }
1271 else
1272#endif
1273 /* win32 people keep sending patches that change this write() to send() */
1274 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1275 /* so when you think this write should be a send instead, please find out */
1276 /* where your send() is from - it's definitely not the microsoft send, and */
1277 /* tell me. thank you. */
1278 write (evpipe [1], &dummy, 1);
1279
1280 errno = old_errno;
1281 } 1403 }
1282} 1404}
1283 1405
1284/* called whenever the libev signal pipe */ 1406/* called whenever the libev signal pipe */
1285/* got some events (signal, async) */ 1407/* got some events (signal, async) */
1286static void 1408static void
1287pipecb (EV_P_ ev_io *iow, int revents) 1409pipecb (EV_P_ ev_io *iow, int revents)
1288{ 1410{
1289 int i; 1411 int i;
1290 1412
1413 if (revents & EV_READ)
1414 {
1291#if EV_USE_EVENTFD 1415#if EV_USE_EVENTFD
1292 if (evfd >= 0) 1416 if (evfd >= 0)
1293 { 1417 {
1294 uint64_t counter; 1418 uint64_t counter;
1295 read (evfd, &counter, sizeof (uint64_t)); 1419 read (evfd, &counter, sizeof (uint64_t));
1296 } 1420 }
1297 else 1421 else
1298#endif 1422#endif
1299 { 1423 {
1300 char dummy; 1424 char dummy;
1301 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 1425 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1302 read (evpipe [0], &dummy, 1); 1426 read (evpipe [0], &dummy, 1);
1427 }
1303 } 1428 }
1304 1429
1430 pipe_write_skipped = 0;
1431
1432#if EV_SIGNAL_ENABLE
1305 if (sig_pending) 1433 if (sig_pending)
1306 { 1434 {
1307 sig_pending = 0; 1435 sig_pending = 0;
1308 1436
1309 for (i = EV_NSIG - 1; i--; ) 1437 for (i = EV_NSIG - 1; i--; )
1310 if (expect_false (signals [i].pending)) 1438 if (expect_false (signals [i].pending))
1311 ev_feed_signal_event (EV_A_ i + 1); 1439 ev_feed_signal_event (EV_A_ i + 1);
1312 } 1440 }
1441#endif
1313 1442
1314#if EV_ASYNC_ENABLE 1443#if EV_ASYNC_ENABLE
1315 if (async_pending) 1444 if (async_pending)
1316 { 1445 {
1317 async_pending = 0; 1446 async_pending = 0;
… …
1326#endif 1455#endif
1327} 1456}
1328 1457
1329/*****************************************************************************/ 1458/*****************************************************************************/
1330 1459
1460void
1461ev_feed_signal (int signum)
1462{
1463#if EV_MULTIPLICITY
1464 EV_P = signals [signum - 1].loop;
1465
1466 if (!EV_A)
1467 return;
1468#endif
1469
1470 evpipe_init (EV_A);
1471
1472 signals [signum - 1].pending = 1;
1473 evpipe_write (EV_A_ &sig_pending);
1474}
1475
1331static void 1476static void
1332ev_sighandler (int signum) 1477ev_sighandler (int signum)
1333{ 1478{
1334#if EV_MULTIPLICITY
1335 EV_P = signals [signum - 1].loop;
1336#endif
1337
1338#ifdef _WIN32 1479#ifdef _WIN32
1339 signal (signum, ev_sighandler); 1480 signal (signum, ev_sighandler);
1340#endif 1481#endif
1341 1482
1342 signals [signum - 1].pending = 1; 1483 ev_feed_signal (signum);
1343 evpipe_write (EV_A_ &sig_pending);
1344} 1484}
1345 1485
1346void noinline 1486void noinline
1347ev_feed_signal_event (EV_P_ int signum) 1487ev_feed_signal_event (EV_P_ int signum)
1348{ 1488{
… …
1448 1588
1449#endif 1589#endif
1450 1590
1451/*****************************************************************************/ 1591/*****************************************************************************/
1452 1592
1593#if EV_USE_IOCP
1594# include "ev_iocp.c"
1595#endif
1453#if EV_USE_PORT 1596#if EV_USE_PORT
1454# include "ev_port.c" 1597# include "ev_port.c"
1455#endif 1598#endif
1456#if EV_USE_KQUEUE 1599#if EV_USE_KQUEUE
1457# include "ev_kqueue.c" 1600# include "ev_kqueue.c"
… …
1530ev_embeddable_backends (void) 1673ev_embeddable_backends (void)
1531{ 1674{
1532 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1675 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1533 1676
1534 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 1677 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1535 /* please fix it and tell me how to detect the fix */ 1678 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1536 flags &= ~EVBACKEND_EPOLL; 1679 flags &= ~EVBACKEND_EPOLL;
1537 1680
1538 return flags; 1681 return flags;
1539} 1682}
1540 1683
1541unsigned int 1684unsigned int
… …
1597static void noinline 1740static void noinline
1598loop_init (EV_P_ unsigned int flags) 1741loop_init (EV_P_ unsigned int flags)
1599{ 1742{
1600 if (!backend) 1743 if (!backend)
1601 { 1744 {
1745 origflags = flags;
1746
1602#if EV_USE_REALTIME 1747#if EV_USE_REALTIME
1603 if (!have_realtime) 1748 if (!have_realtime)
1604 { 1749 {
1605 struct timespec ts; 1750 struct timespec ts;
1606 1751
… …
1628 if (!(flags & EVFLAG_NOENV) 1773 if (!(flags & EVFLAG_NOENV)
1629 && !enable_secure () 1774 && !enable_secure ()
1630 && getenv ("LIBEV_FLAGS")) 1775 && getenv ("LIBEV_FLAGS"))
1631 flags = atoi (getenv ("LIBEV_FLAGS")); 1776 flags = atoi (getenv ("LIBEV_FLAGS"));
1632 1777
1633 ev_rt_now = ev_time (); 1778 ev_rt_now = ev_time ();
1634 mn_now = get_clock (); 1779 mn_now = get_clock ();
1635 now_floor = mn_now; 1780 now_floor = mn_now;
1636 rtmn_diff = ev_rt_now - mn_now; 1781 rtmn_diff = ev_rt_now - mn_now;
1637#if EV_FEATURE_API 1782#if EV_FEATURE_API
1638 invoke_cb = ev_invoke_pending; 1783 invoke_cb = ev_invoke_pending;
1639#endif 1784#endif
1640 1785
1641 io_blocktime = 0.; 1786 io_blocktime = 0.;
1642 timeout_blocktime = 0.; 1787 timeout_blocktime = 0.;
1643 backend = 0; 1788 backend = 0;
1644 backend_fd = -1; 1789 backend_fd = -1;
1645 sig_pending = 0; 1790 sig_pending = 0;
1646#if EV_ASYNC_ENABLE 1791#if EV_ASYNC_ENABLE
1647 async_pending = 0; 1792 async_pending = 0;
1648#endif 1793#endif
1794 pipe_write_skipped = 0;
1795 pipe_write_wanted = 0;
1649#if EV_USE_INOTIFY 1796#if EV_USE_INOTIFY
1650 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 1797 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1651#endif 1798#endif
1652#if EV_USE_SIGNALFD 1799#if EV_USE_SIGNALFD
1653 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 1800 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1654#endif 1801#endif
1655 1802
1656 if (!(flags & 0x0000ffffU)) 1803 if (!(flags & EVBACKEND_MASK))
1657 flags |= ev_recommended_backends (); 1804 flags |= ev_recommended_backends ();
1658 1805
1806#if EV_USE_IOCP
1807 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1808#endif
1659#if EV_USE_PORT 1809#if EV_USE_PORT
1660 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1810 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1661#endif 1811#endif
1662#if EV_USE_KQUEUE 1812#if EV_USE_KQUEUE
1663 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1813 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1680#endif 1830#endif
1681 } 1831 }
1682} 1832}
1683 1833
1684/* free up a loop structure */ 1834/* free up a loop structure */
1685static void noinline 1835void
1686loop_destroy (EV_P) 1836ev_loop_destroy (EV_P)
1687{ 1837{
1688 int i; 1838 int i;
1839
1840#if EV_MULTIPLICITY
1841 /* mimic free (0) */
1842 if (!EV_A)
1843 return;
1844#endif
1845
1846#if EV_CLEANUP_ENABLE
1847 /* queue cleanup watchers (and execute them) */
1848 if (expect_false (cleanupcnt))
1849 {
1850 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1851 EV_INVOKE_PENDING;
1852 }
1853#endif
1854
1855#if EV_CHILD_ENABLE
1856 if (ev_is_active (&childev))
1857 {
1858 ev_ref (EV_A); /* child watcher */
1859 ev_signal_stop (EV_A_ &childev);
1860 }
1861#endif
1689 1862
1690 if (ev_is_active (&pipe_w)) 1863 if (ev_is_active (&pipe_w))
1691 { 1864 {
1692 /*ev_ref (EV_A);*/ 1865 /*ev_ref (EV_A);*/
1693 /*ev_io_stop (EV_A_ &pipe_w);*/ 1866 /*ev_io_stop (EV_A_ &pipe_w);*/
… …
1715#endif 1888#endif
1716 1889
1717 if (backend_fd >= 0) 1890 if (backend_fd >= 0)
1718 close (backend_fd); 1891 close (backend_fd);
1719 1892
1893#if EV_USE_IOCP
1894 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1895#endif
1720#if EV_USE_PORT 1896#if EV_USE_PORT
1721 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1897 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1722#endif 1898#endif
1723#if EV_USE_KQUEUE 1899#if EV_USE_KQUEUE
1724 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 1900 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1751 array_free (periodic, EMPTY); 1927 array_free (periodic, EMPTY);
1752#endif 1928#endif
1753#if EV_FORK_ENABLE 1929#if EV_FORK_ENABLE
1754 array_free (fork, EMPTY); 1930 array_free (fork, EMPTY);
1755#endif 1931#endif
1932#if EV_CLEANUP_ENABLE
1933 array_free (cleanup, EMPTY);
1934#endif
1756 array_free (prepare, EMPTY); 1935 array_free (prepare, EMPTY);
1757 array_free (check, EMPTY); 1936 array_free (check, EMPTY);
1758#if EV_ASYNC_ENABLE 1937#if EV_ASYNC_ENABLE
1759 array_free (async, EMPTY); 1938 array_free (async, EMPTY);
1760#endif 1939#endif
1761 1940
1762 backend = 0; 1941 backend = 0;
1942
1943#if EV_MULTIPLICITY
1944 if (ev_is_default_loop (EV_A))
1945#endif
1946 ev_default_loop_ptr = 0;
1947#if EV_MULTIPLICITY
1948 else
1949 ev_free (EV_A);
1950#endif
1763} 1951}
1764 1952
1765#if EV_USE_INOTIFY 1953#if EV_USE_INOTIFY
1766inline_size void infy_fork (EV_P); 1954inline_size void infy_fork (EV_P);
1767#endif 1955#endif
… …
1782 infy_fork (EV_A); 1970 infy_fork (EV_A);
1783#endif 1971#endif
1784 1972
1785 if (ev_is_active (&pipe_w)) 1973 if (ev_is_active (&pipe_w))
1786 { 1974 {
1787 /* this "locks" the handlers against writing to the pipe */ 1975 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1788 /* while we modify the fd vars */
1789 sig_pending = 1;
1790#if EV_ASYNC_ENABLE
1791 async_pending = 1;
1792#endif
1793 1976
1794 ev_ref (EV_A); 1977 ev_ref (EV_A);
1795 ev_io_stop (EV_A_ &pipe_w); 1978 ev_io_stop (EV_A_ &pipe_w);
1796 1979
1797#if EV_USE_EVENTFD 1980#if EV_USE_EVENTFD
… …
1826 loop_init (EV_A_ flags); 2009 loop_init (EV_A_ flags);
1827 2010
1828 if (ev_backend (EV_A)) 2011 if (ev_backend (EV_A))
1829 return EV_A; 2012 return EV_A;
1830 2013
2014 ev_free (EV_A);
1831 return 0; 2015 return 0;
1832} 2016}
1833 2017
1834void
1835ev_loop_destroy (EV_P)
1836{
1837 loop_destroy (EV_A);
1838 ev_free (loop);
1839}
1840
1841void
1842ev_loop_fork (EV_P)
1843{
1844 postfork = 1; /* must be in line with ev_default_fork */
1845}
1846#endif /* multiplicity */ 2018#endif /* multiplicity */
1847 2019
1848#if EV_VERIFY 2020#if EV_VERIFY
1849static void noinline 2021static void noinline
1850verify_watcher (EV_P_ W w) 2022verify_watcher (EV_P_ W w)
… …
1925#if EV_FORK_ENABLE 2097#if EV_FORK_ENABLE
1926 assert (forkmax >= forkcnt); 2098 assert (forkmax >= forkcnt);
1927 array_verify (EV_A_ (W *)forks, forkcnt); 2099 array_verify (EV_A_ (W *)forks, forkcnt);
1928#endif 2100#endif
1929 2101
2102#if EV_CLEANUP_ENABLE
2103 assert (cleanupmax >= cleanupcnt);
2104 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2105#endif
2106
1930#if EV_ASYNC_ENABLE 2107#if EV_ASYNC_ENABLE
1931 assert (asyncmax >= asynccnt); 2108 assert (asyncmax >= asynccnt);
1932 array_verify (EV_A_ (W *)asyncs, asynccnt); 2109 array_verify (EV_A_ (W *)asyncs, asynccnt);
1933#endif 2110#endif
1934 2111
… …
1952} 2129}
1953#endif 2130#endif
1954 2131
1955#if EV_MULTIPLICITY 2132#if EV_MULTIPLICITY
1956struct ev_loop * 2133struct ev_loop *
1957ev_default_loop_init (unsigned int flags)
1958#else 2134#else
1959int 2135int
2136#endif
1960ev_default_loop (unsigned int flags) 2137ev_default_loop (unsigned int flags)
1961#endif
1962{ 2138{
1963 if (!ev_default_loop_ptr) 2139 if (!ev_default_loop_ptr)
1964 { 2140 {
1965#if EV_MULTIPLICITY 2141#if EV_MULTIPLICITY
1966 EV_P = ev_default_loop_ptr = &default_loop_struct; 2142 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1985 2161
1986 return ev_default_loop_ptr; 2162 return ev_default_loop_ptr;
1987} 2163}
1988 2164
1989void 2165void
1990ev_default_destroy (void) 2166ev_loop_fork (EV_P)
1991{ 2167{
1992#if EV_MULTIPLICITY
1993 EV_P = ev_default_loop_ptr;
1994#endif
1995
1996 ev_default_loop_ptr = 0;
1997
1998#if EV_CHILD_ENABLE
1999 ev_ref (EV_A); /* child watcher */
2000 ev_signal_stop (EV_A_ &childev);
2001#endif
2002
2003 loop_destroy (EV_A);
2004}
2005
2006void
2007ev_default_fork (void)
2008{
2009#if EV_MULTIPLICITY
2010 EV_P = ev_default_loop_ptr;
2011#endif
2012
2013 postfork = 1; /* must be in line with ev_loop_fork */ 2168 postfork = 1; /* must be in line with ev_default_fork */
2014} 2169}
2015 2170
2016/*****************************************************************************/ 2171/*****************************************************************************/
2017 2172
2018void 2173void
… …
2040 2195
2041 for (pri = NUMPRI; pri--; ) 2196 for (pri = NUMPRI; pri--; )
2042 while (pendingcnt [pri]) 2197 while (pendingcnt [pri])
2043 { 2198 {
2044 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2199 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
2045
2046 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2047 /* ^ this is no longer true, as pending_w could be here */
2048 2200
2049 p->w->pending = 0; 2201 p->w->pending = 0;
2050 EV_CB_INVOKE (p->w, p->events); 2202 EV_CB_INVOKE (p->w, p->events);
2051 EV_FREQUENT_CHECK; 2203 EV_FREQUENT_CHECK;
2052 } 2204 }
… …
2114 feed_reverse_done (EV_A_ EV_TIMER); 2266 feed_reverse_done (EV_A_ EV_TIMER);
2115 } 2267 }
2116} 2268}
2117 2269
2118#if EV_PERIODIC_ENABLE 2270#if EV_PERIODIC_ENABLE
2271
2272static void noinline
2273periodic_recalc (EV_P_ ev_periodic *w)
2274{
2275 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2276 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2277
2278 /* the above almost always errs on the low side */
2279 while (at <= ev_rt_now)
2280 {
2281 ev_tstamp nat = at + w->interval;
2282
2283 /* when resolution fails us, we use ev_rt_now */
2284 if (expect_false (nat == at))
2285 {
2286 at = ev_rt_now;
2287 break;
2288 }
2289
2290 at = nat;
2291 }
2292
2293 ev_at (w) = at;
2294}
2295
2119/* make periodics pending */ 2296/* make periodics pending */
2120inline_size void 2297inline_size void
2121periodics_reify (EV_P) 2298periodics_reify (EV_P)
2122{ 2299{
2123 EV_FREQUENT_CHECK; 2300 EV_FREQUENT_CHECK;
… …
2142 ANHE_at_cache (periodics [HEAP0]); 2319 ANHE_at_cache (periodics [HEAP0]);
2143 downheap (periodics, periodiccnt, HEAP0); 2320 downheap (periodics, periodiccnt, HEAP0);
2144 } 2321 }
2145 else if (w->interval) 2322 else if (w->interval)
2146 { 2323 {
2147 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2324 periodic_recalc (EV_A_ w);
2148 /* if next trigger time is not sufficiently in the future, put it there */
2149 /* this might happen because of floating point inexactness */
2150 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2151 {
2152 ev_at (w) += w->interval;
2153
2154 /* if interval is unreasonably low we might still have a time in the past */
2155 /* so correct this. this will make the periodic very inexact, but the user */
2156 /* has effectively asked to get triggered more often than possible */
2157 if (ev_at (w) < ev_rt_now)
2158 ev_at (w) = ev_rt_now;
2159 }
2160
2161 ANHE_at_cache (periodics [HEAP0]); 2325 ANHE_at_cache (periodics [HEAP0]);
2162 downheap (periodics, periodiccnt, HEAP0); 2326 downheap (periodics, periodiccnt, HEAP0);
2163 } 2327 }
2164 else 2328 else
2165 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2329 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2186 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2350 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2187 2351
2188 if (w->reschedule_cb) 2352 if (w->reschedule_cb)
2189 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2353 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2190 else if (w->interval) 2354 else if (w->interval)
2191 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2355 periodic_recalc (EV_A_ w);
2192 2356
2193 ANHE_at_cache (periodics [i]); 2357 ANHE_at_cache (periodics [i]);
2194 } 2358 }
2195 2359
2196 reheap (periodics, periodiccnt); 2360 reheap (periodics, periodiccnt);
… …
2243 * doesn't hurt either as we only do this on time-jumps or 2407 * doesn't hurt either as we only do this on time-jumps or
2244 * in the unlikely event of having been preempted here. 2408 * in the unlikely event of having been preempted here.
2245 */ 2409 */
2246 for (i = 4; --i; ) 2410 for (i = 4; --i; )
2247 { 2411 {
2412 ev_tstamp diff;
2248 rtmn_diff = ev_rt_now - mn_now; 2413 rtmn_diff = ev_rt_now - mn_now;
2249 2414
2415 diff = odiff - rtmn_diff;
2416
2250 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2417 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2251 return; /* all is well */ 2418 return; /* all is well */
2252 2419
2253 ev_rt_now = ev_time (); 2420 ev_rt_now = ev_time ();
2254 mn_now = get_clock (); 2421 mn_now = get_clock ();
2255 now_floor = mn_now; 2422 now_floor = mn_now;
… …
2345 ev_tstamp prev_mn_now = mn_now; 2512 ev_tstamp prev_mn_now = mn_now;
2346 2513
2347 /* update time to cancel out callback processing overhead */ 2514 /* update time to cancel out callback processing overhead */
2348 time_update (EV_A_ 1e100); 2515 time_update (EV_A_ 1e100);
2349 2516
2517 /* from now on, we want a pipe-wake-up */
2518 pipe_write_wanted = 1;
2519
2350 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt))) 2520 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2351 { 2521 {
2352 waittime = MAX_BLOCKTIME; 2522 waittime = MAX_BLOCKTIME;
2353 2523
2354 if (timercnt) 2524 if (timercnt)
2355 { 2525 {
2356 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2526 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2357 if (waittime > to) waittime = to; 2527 if (waittime > to) waittime = to;
2358 } 2528 }
2359 2529
2360#if EV_PERIODIC_ENABLE 2530#if EV_PERIODIC_ENABLE
2361 if (periodiccnt) 2531 if (periodiccnt)
2362 { 2532 {
2363 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2533 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2364 if (waittime > to) waittime = to; 2534 if (waittime > to) waittime = to;
2365 } 2535 }
2366#endif 2536#endif
2367 2537
2368 /* don't let timeouts decrease the waittime below timeout_blocktime */ 2538 /* don't let timeouts decrease the waittime below timeout_blocktime */
2369 if (expect_false (waittime < timeout_blocktime)) 2539 if (expect_false (waittime < timeout_blocktime))
2370 waittime = timeout_blocktime; 2540 waittime = timeout_blocktime;
2541
2542 /* at this point, we NEED to wait, so we have to ensure */
2543 /* to pass a minimum nonzero value to the backend */
2544 if (expect_false (waittime < backend_mintime))
2545 waittime = backend_mintime;
2371 2546
2372 /* extra check because io_blocktime is commonly 0 */ 2547 /* extra check because io_blocktime is commonly 0 */
2373 if (expect_false (io_blocktime)) 2548 if (expect_false (io_blocktime))
2374 { 2549 {
2375 sleeptime = io_blocktime - (mn_now - prev_mn_now); 2550 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2376 2551
2377 if (sleeptime > waittime - backend_fudge) 2552 if (sleeptime > waittime - backend_mintime)
2378 sleeptime = waittime - backend_fudge; 2553 sleeptime = waittime - backend_mintime;
2379 2554
2380 if (expect_true (sleeptime > 0.)) 2555 if (expect_true (sleeptime > 0.))
2381 { 2556 {
2382 ev_sleep (sleeptime); 2557 ev_sleep (sleeptime);
2383 waittime -= sleeptime; 2558 waittime -= sleeptime;
… …
2389 ++loop_count; 2564 ++loop_count;
2390#endif 2565#endif
2391 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 2566 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2392 backend_poll (EV_A_ waittime); 2567 backend_poll (EV_A_ waittime);
2393 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 2568 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2569
2570 pipe_write_wanted = 0;
2571
2572 if (pipe_write_skipped)
2573 {
2574 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
2575 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2576 }
2577
2394 2578
2395 /* update ev_rt_now, do magic */ 2579 /* update ev_rt_now, do magic */
2396 time_update (EV_A_ waittime + sleeptime); 2580 time_update (EV_A_ waittime + sleeptime);
2397 } 2581 }
2398 2582
… …
2688 if (w->reschedule_cb) 2872 if (w->reschedule_cb)
2689 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2873 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2690 else if (w->interval) 2874 else if (w->interval)
2691 { 2875 {
2692 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 2876 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2693 /* this formula differs from the one in periodic_reify because we do not always round up */ 2877 periodic_recalc (EV_A_ w);
2694 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2695 } 2878 }
2696 else 2879 else
2697 ev_at (w) = w->offset; 2880 ev_at (w) = w->offset;
2698 2881
2699 EV_FREQUENT_CHECK; 2882 EV_FREQUENT_CHECK;
… …
2820 sa.sa_handler = ev_sighandler; 3003 sa.sa_handler = ev_sighandler;
2821 sigfillset (&sa.sa_mask); 3004 sigfillset (&sa.sa_mask);
2822 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3005 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2823 sigaction (w->signum, &sa, 0); 3006 sigaction (w->signum, &sa, 0);
2824 3007
3008 if (origflags & EVFLAG_NOSIGMASK)
3009 {
2825 sigemptyset (&sa.sa_mask); 3010 sigemptyset (&sa.sa_mask);
2826 sigaddset (&sa.sa_mask, w->signum); 3011 sigaddset (&sa.sa_mask, w->signum);
2827 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3012 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3013 }
2828#endif 3014#endif
2829 } 3015 }
2830 3016
2831 EV_FREQUENT_CHECK; 3017 EV_FREQUENT_CHECK;
2832} 3018}
… …
2973 if (!pend || pend == path) 3159 if (!pend || pend == path)
2974 break; 3160 break;
2975 3161
2976 *pend = 0; 3162 *pend = 0;
2977 w->wd = inotify_add_watch (fs_fd, path, mask); 3163 w->wd = inotify_add_watch (fs_fd, path, mask);
2978 } 3164 }
2979 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3165 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2980 } 3166 }
2981 } 3167 }
2982 3168
2983 if (w->wd >= 0) 3169 if (w->wd >= 0)
… …
3048 { 3234 {
3049 struct inotify_event *ev = (struct inotify_event *)(buf + ofs); 3235 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
3050 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3236 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3051 ofs += sizeof (struct inotify_event) + ev->len; 3237 ofs += sizeof (struct inotify_event) + ev->len;
3052 } 3238 }
3053}
3054
3055inline_size unsigned int
3056ev_linux_version (void)
3057{
3058 struct utsname buf;
3059 unsigned int v;
3060 int i;
3061 char *p = buf.release;
3062
3063 if (uname (&buf))
3064 return 0;
3065
3066 for (i = 3+1; --i; )
3067 {
3068 unsigned int c = 0;
3069
3070 for (;;)
3071 {
3072 if (*p >= '0' && *p <= '9')
3073 c = c * 10 + *p++ - '0';
3074 else
3075 {
3076 p += *p == '.';
3077 break;
3078 }
3079 }
3080
3081 v = (v << 8) | c;
3082 }
3083
3084 return v;
3085} 3239}
3086 3240
3087inline_size void 3241inline_size void
3088ev_check_2625 (EV_P) 3242ev_check_2625 (EV_P)
3089{ 3243{
… …
3556 3710
3557 EV_FREQUENT_CHECK; 3711 EV_FREQUENT_CHECK;
3558} 3712}
3559#endif 3713#endif
3560 3714
3715#if EV_CLEANUP_ENABLE
3716void
3717ev_cleanup_start (EV_P_ ev_cleanup *w)
3718{
3719 if (expect_false (ev_is_active (w)))
3720 return;
3721
3722 EV_FREQUENT_CHECK;
3723
3724 ev_start (EV_A_ (W)w, ++cleanupcnt);
3725 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
3726 cleanups [cleanupcnt - 1] = w;
3727
3728 /* cleanup watchers should never keep a refcount on the loop */
3729 ev_unref (EV_A);
3730 EV_FREQUENT_CHECK;
3731}
3732
3733void
3734ev_cleanup_stop (EV_P_ ev_cleanup *w)
3735{
3736 clear_pending (EV_A_ (W)w);
3737 if (expect_false (!ev_is_active (w)))
3738 return;
3739
3740 EV_FREQUENT_CHECK;
3741 ev_ref (EV_A);
3742
3743 {
3744 int active = ev_active (w);
3745
3746 cleanups [active - 1] = cleanups [--cleanupcnt];
3747 ev_active (cleanups [active - 1]) = active;
3748 }
3749
3750 ev_stop (EV_A_ (W)w);
3751
3752 EV_FREQUENT_CHECK;
3753}
3754#endif
3755
3561#if EV_ASYNC_ENABLE 3756#if EV_ASYNC_ENABLE
3562void 3757void
3563ev_async_start (EV_P_ ev_async *w) 3758ev_async_start (EV_P_ ev_async *w)
3564{ 3759{
3565 if (expect_false (ev_is_active (w))) 3760 if (expect_false (ev_is_active (w)))

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