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Comparing libev/ev.c (file contents):
Revision 1.305 by root, Sun Jul 19 03:49:04 2009 UTC vs.
Revision 1.329 by root, Tue Feb 16 09:32:39 2010 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 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010 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 *
… …
110# define EV_USE_EPOLL 0 110# define EV_USE_EPOLL 0
111# endif 111# endif
112# endif 112# endif
113 113
114# ifndef EV_USE_KQUEUE 114# ifndef EV_USE_KQUEUE
115# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 115# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
116# define EV_USE_KQUEUE 1 116# define EV_USE_KQUEUE 1
117# else 117# else
118# define EV_USE_KQUEUE 0 118# define EV_USE_KQUEUE 0
119# endif 119# endif
120# endif 120# endif
… …
153 153
154#endif 154#endif
155 155
156#include <math.h> 156#include <math.h>
157#include <stdlib.h> 157#include <stdlib.h>
158#include <string.h>
158#include <fcntl.h> 159#include <fcntl.h>
159#include <stddef.h> 160#include <stddef.h>
160 161
161#include <stdio.h> 162#include <stdio.h>
162 163
163#include <assert.h> 164#include <assert.h>
164#include <errno.h> 165#include <errno.h>
165#include <sys/types.h> 166#include <sys/types.h>
166#include <time.h> 167#include <time.h>
168#include <limits.h>
167 169
168#include <signal.h> 170#include <signal.h>
169 171
170#ifdef EV_H 172#ifdef EV_H
171# include EV_H 173# include EV_H
… …
210#elif defined (_sys_nsig) 212#elif defined (_sys_nsig)
211# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 213# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
212#else 214#else
213# error "unable to find value for NSIG, please report" 215# error "unable to find value for NSIG, please report"
214/* to make it compile regardless, just remove the above line */ 216/* to make it compile regardless, just remove the above line */
215# define EV_NSIG 64 217# define EV_NSIG 65
216#endif 218#endif
217 219
218/* Default to some arbitrary number that's big enough to get most
219 of the common signals.
220*/
221#ifndef NSIG
222# define NSIG 50
223#endif
224/* <-- NSIG logic from Configure */
225#ifndef EV_USE_CLOCK_SYSCALL 220#ifndef EV_USE_CLOCK_SYSCALL
226# if __linux && __GLIBC__ >= 2 221# if __linux && __GLIBC__ >= 2
227# define EV_USE_CLOCK_SYSCALL 1 222# define EV_USE_CLOCK_SYSCALL 1
228# else 223# else
229# define EV_USE_CLOCK_SYSCALL 0 224# define EV_USE_CLOCK_SYSCALL 0
… …
309# define EV_USE_EVENTFD 0 304# define EV_USE_EVENTFD 0
310# endif 305# endif
311#endif 306#endif
312 307
313#ifndef EV_USE_SIGNALFD 308#ifndef EV_USE_SIGNALFD
314# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 9)) 309# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
315# define EV_USE_SIGNALFD 1 310# define EV_USE_SIGNALFD 1
316# else 311# else
317# define EV_USE_SIGNALFD 0 312# define EV_USE_SIGNALFD 0
318# endif 313# endif
319#endif 314#endif
… …
350# endif 345# endif
351#endif 346#endif
352 347
353/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 348/* this block fixes any misconfiguration where we know we run into trouble otherwise */
354 349
350#ifdef _AIX
351/* AIX has a completely broken poll.h header */
352# undef EV_USE_POLL
353# define EV_USE_POLL 0
354#endif
355
355#ifndef CLOCK_MONOTONIC 356#ifndef CLOCK_MONOTONIC
356# undef EV_USE_MONOTONIC 357# undef EV_USE_MONOTONIC
357# define EV_USE_MONOTONIC 0 358# define EV_USE_MONOTONIC 0
358#endif 359#endif
359 360
… …
393# include <stdint.h> 394# include <stdint.h>
394# ifndef EFD_NONBLOCK 395# ifndef EFD_NONBLOCK
395# define EFD_NONBLOCK O_NONBLOCK 396# define EFD_NONBLOCK O_NONBLOCK
396# endif 397# endif
397# ifndef EFD_CLOEXEC 398# ifndef EFD_CLOEXEC
399# ifdef O_CLOEXEC
398# define EFD_CLOEXEC O_CLOEXEC 400# define EFD_CLOEXEC O_CLOEXEC
401# else
402# define EFD_CLOEXEC 02000000
403# endif
399# endif 404# endif
400# ifdef __cplusplus 405# ifdef __cplusplus
401extern "C" { 406extern "C" {
402# endif 407# endif
403int eventfd (unsigned int initval, int flags); 408int (eventfd) (unsigned int initval, int flags);
404# ifdef __cplusplus 409# ifdef __cplusplus
405} 410}
406# endif 411# endif
407#endif 412#endif
408 413
409#if EV_USE_SIGNALFD 414#if EV_USE_SIGNALFD
410# include <sys/signalfd.h> 415/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
416# include <stdint.h>
417# ifndef SFD_NONBLOCK
418# define SFD_NONBLOCK O_NONBLOCK
411#endif 419# endif
420# ifndef SFD_CLOEXEC
421# ifdef O_CLOEXEC
422# define SFD_CLOEXEC O_CLOEXEC
423# else
424# define SFD_CLOEXEC 02000000
425# endif
426# endif
427# ifdef __cplusplus
428extern "C" {
429# endif
430int signalfd (int fd, const sigset_t *mask, int flags);
431
432struct signalfd_siginfo
433{
434 uint32_t ssi_signo;
435 char pad[128 - sizeof (uint32_t)];
436};
437# ifdef __cplusplus
438}
439# endif
440#endif
441
412 442
413/**/ 443/**/
414 444
415#if EV_VERIFY >= 3 445#if EV_VERIFY >= 3
416# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 446# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
… …
428 */ 458 */
429#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 459#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
430 460
431#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 461#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
432#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 462#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
433/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
434 463
435#if __GNUC__ >= 4 464#if __GNUC__ >= 4
436# define expect(expr,value) __builtin_expect ((expr),(value)) 465# define expect(expr,value) __builtin_expect ((expr),(value))
437# define noinline __attribute__ ((noinline)) 466# define noinline __attribute__ ((noinline))
438#else 467#else
… …
477static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 506static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
478#endif 507#endif
479 508
480#if EV_USE_MONOTONIC 509#if EV_USE_MONOTONIC
481static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 510static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
511#endif
512
513#ifndef EV_FD_TO_WIN32_HANDLE
514# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
515#endif
516#ifndef EV_WIN32_HANDLE_TO_FD
517# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
518#endif
519#ifndef EV_WIN32_CLOSE_FD
520# define EV_WIN32_CLOSE_FD(fd) close (fd)
482#endif 521#endif
483 522
484#ifdef _WIN32 523#ifdef _WIN32
485# include "ev_win32.c" 524# include "ev_win32.c"
486#endif 525#endif
… …
879 918
880#if EV_SELECT_IS_WINSOCKET 919#if EV_SELECT_IS_WINSOCKET
881 if (events) 920 if (events)
882 { 921 {
883 unsigned long arg; 922 unsigned long arg;
884 #ifdef EV_FD_TO_WIN32_HANDLE
885 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 923 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
886 #else
887 anfd->handle = _get_osfhandle (fd);
888 #endif
889 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 924 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
890 } 925 }
891#endif 926#endif
892 927
893 { 928 {
… …
936/* check whether the given fd is atcually valid, for error recovery */ 971/* check whether the given fd is atcually valid, for error recovery */
937inline_size int 972inline_size int
938fd_valid (int fd) 973fd_valid (int fd)
939{ 974{
940#ifdef _WIN32 975#ifdef _WIN32
941 return _get_osfhandle (fd) != -1; 976 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
942#else 977#else
943 return fcntl (fd, F_GETFD) != -1; 978 return fcntl (fd, F_GETFD) != -1;
944#endif 979#endif
945} 980}
946 981
… …
964 999
965 for (fd = anfdmax; fd--; ) 1000 for (fd = anfdmax; fd--; )
966 if (anfds [fd].events) 1001 if (anfds [fd].events)
967 { 1002 {
968 fd_kill (EV_A_ fd); 1003 fd_kill (EV_A_ fd);
969 return; 1004 break;
970 } 1005 }
971} 1006}
972 1007
973/* usually called after fork if backend needs to re-arm all fds from scratch */ 1008/* usually called after fork if backend needs to re-arm all fds from scratch */
974static void noinline 1009static void noinline
… …
1064 1099
1065 for (;;) 1100 for (;;)
1066 { 1101 {
1067 int c = k << 1; 1102 int c = k << 1;
1068 1103
1069 if (c > N + HEAP0 - 1) 1104 if (c >= N + HEAP0)
1070 break; 1105 break;
1071 1106
1072 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1107 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
1073 ? 1 : 0; 1108 ? 1 : 0;
1074 1109
… …
1110 1145
1111/* move an element suitably so it is in a correct place */ 1146/* move an element suitably so it is in a correct place */
1112inline_size void 1147inline_size void
1113adjustheap (ANHE *heap, int N, int k) 1148adjustheap (ANHE *heap, int N, int k)
1114{ 1149{
1115 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1150 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1116 upheap (heap, k); 1151 upheap (heap, k);
1117 else 1152 else
1118 downheap (heap, N, k); 1153 downheap (heap, N, k);
1119} 1154}
1120 1155
… …
1133/*****************************************************************************/ 1168/*****************************************************************************/
1134 1169
1135/* associate signal watchers to a signal signal */ 1170/* associate signal watchers to a signal signal */
1136typedef struct 1171typedef struct
1137{ 1172{
1173 EV_ATOMIC_T pending;
1174#if EV_MULTIPLICITY
1175 EV_P;
1176#endif
1138 WL head; 1177 WL head;
1139 EV_ATOMIC_T gotsig;
1140} ANSIG; 1178} ANSIG;
1141 1179
1142static ANSIG *signals; 1180static ANSIG signals [EV_NSIG - 1];
1143static int signalmax;
1144
1145static EV_ATOMIC_T gotsig;
1146 1181
1147/*****************************************************************************/ 1182/*****************************************************************************/
1148 1183
1149/* used to prepare libev internal fd's */ 1184/* used to prepare libev internal fd's */
1150/* this is not fork-safe */ 1185/* this is not fork-safe */
1151inline_speed void 1186inline_speed void
1152fd_intern (int fd) 1187fd_intern (int fd)
1153{ 1188{
1154#ifdef _WIN32 1189#ifdef _WIN32
1155 unsigned long arg = 1; 1190 unsigned long arg = 1;
1156 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 1191 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1157#else 1192#else
1158 fcntl (fd, F_SETFD, FD_CLOEXEC); 1193 fcntl (fd, F_SETFD, FD_CLOEXEC);
1159 fcntl (fd, F_SETFL, O_NONBLOCK); 1194 fcntl (fd, F_SETFL, O_NONBLOCK);
1160#endif 1195#endif
1161} 1196}
… …
1218/* called whenever the libev signal pipe */ 1253/* called whenever the libev signal pipe */
1219/* got some events (signal, async) */ 1254/* got some events (signal, async) */
1220static void 1255static void
1221pipecb (EV_P_ ev_io *iow, int revents) 1256pipecb (EV_P_ ev_io *iow, int revents)
1222{ 1257{
1258 int i;
1259
1223#if EV_USE_EVENTFD 1260#if EV_USE_EVENTFD
1224 if (evfd >= 0) 1261 if (evfd >= 0)
1225 { 1262 {
1226 uint64_t counter; 1263 uint64_t counter;
1227 read (evfd, &counter, sizeof (uint64_t)); 1264 read (evfd, &counter, sizeof (uint64_t));
… …
1231 { 1268 {
1232 char dummy; 1269 char dummy;
1233 read (evpipe [0], &dummy, 1); 1270 read (evpipe [0], &dummy, 1);
1234 } 1271 }
1235 1272
1236 if (gotsig && ev_is_default_loop (EV_A)) 1273 if (sig_pending)
1237 { 1274 {
1238 int signum; 1275 sig_pending = 0;
1239 gotsig = 0;
1240 1276
1241 for (signum = signalmax; signum--; ) 1277 for (i = EV_NSIG - 1; i--; )
1242 if (signals [signum].gotsig) 1278 if (expect_false (signals [i].pending))
1243 ev_feed_signal_event (EV_A_ signum + 1); 1279 ev_feed_signal_event (EV_A_ i + 1);
1244 } 1280 }
1245 1281
1246#if EV_ASYNC_ENABLE 1282#if EV_ASYNC_ENABLE
1247 if (gotasync) 1283 if (async_pending)
1248 { 1284 {
1249 int i; 1285 async_pending = 0;
1250 gotasync = 0;
1251 1286
1252 for (i = asynccnt; i--; ) 1287 for (i = asynccnt; i--; )
1253 if (asyncs [i]->sent) 1288 if (asyncs [i]->sent)
1254 { 1289 {
1255 asyncs [i]->sent = 0; 1290 asyncs [i]->sent = 0;
… …
1263 1298
1264static void 1299static void
1265ev_sighandler (int signum) 1300ev_sighandler (int signum)
1266{ 1301{
1267#if EV_MULTIPLICITY 1302#if EV_MULTIPLICITY
1268 struct ev_loop *loop = &default_loop_struct; 1303 EV_P = signals [signum - 1].loop;
1269#endif 1304#endif
1270 1305
1271#if _WIN32 1306#ifdef _WIN32
1272 signal (signum, ev_sighandler); 1307 signal (signum, ev_sighandler);
1273#endif 1308#endif
1274 1309
1275 signals [signum - 1].gotsig = 1; 1310 signals [signum - 1].pending = 1;
1276 evpipe_write (EV_A_ &gotsig); 1311 evpipe_write (EV_A_ &sig_pending);
1277} 1312}
1278 1313
1279void noinline 1314void noinline
1280ev_feed_signal_event (EV_P_ int signum) 1315ev_feed_signal_event (EV_P_ int signum)
1281{ 1316{
1282 WL w; 1317 WL w;
1283 1318
1319 if (expect_false (signum <= 0 || signum > EV_NSIG))
1320 return;
1321
1322 --signum;
1323
1284#if EV_MULTIPLICITY 1324#if EV_MULTIPLICITY
1285 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1325 /* it is permissible to try to feed a signal to the wrong loop */
1286#endif 1326 /* or, likely more useful, feeding a signal nobody is waiting for */
1287 1327
1288 --signum; 1328 if (expect_false (signals [signum].loop != EV_A))
1289
1290 if (signum < 0 || signum >= signalmax)
1291 return; 1329 return;
1330#endif
1292 1331
1293 signals [signum].gotsig = 0; 1332 signals [signum].pending = 0;
1294 1333
1295 for (w = signals [signum].head; w; w = w->next) 1334 for (w = signals [signum].head; w; w = w->next)
1296 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1335 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1297} 1336}
1298 1337
1299#if EV_USE_SIGNALFD 1338#if EV_USE_SIGNALFD
1300static void 1339static void
1301sigfdcb (EV_P_ ev_io *iow, int revents) 1340sigfdcb (EV_P_ ev_io *iow, int revents)
1302{ 1341{
1303 struct signalfd_siginfo si[4], *sip; 1342 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1304 1343
1305 for (;;) 1344 for (;;)
1306 { 1345 {
1307 ssize_t res = read (sigfd, si, sizeof (si)); 1346 ssize_t res = read (sigfd, si, sizeof (si));
1308 1347
… …
1542 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1581 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1543 have_monotonic = 1; 1582 have_monotonic = 1;
1544 } 1583 }
1545#endif 1584#endif
1546 1585
1586 /* pid check not overridable via env */
1587#ifndef _WIN32
1588 if (flags & EVFLAG_FORKCHECK)
1589 curpid = getpid ();
1590#endif
1591
1592 if (!(flags & EVFLAG_NOENV)
1593 && !enable_secure ()
1594 && getenv ("LIBEV_FLAGS"))
1595 flags = atoi (getenv ("LIBEV_FLAGS"));
1596
1547 ev_rt_now = ev_time (); 1597 ev_rt_now = ev_time ();
1548 mn_now = get_clock (); 1598 mn_now = get_clock ();
1549 now_floor = mn_now; 1599 now_floor = mn_now;
1550 rtmn_diff = ev_rt_now - mn_now; 1600 rtmn_diff = ev_rt_now - mn_now;
1551#if EV_MINIMAL < 2 1601#if EV_MINIMAL < 2
… …
1554 1604
1555 io_blocktime = 0.; 1605 io_blocktime = 0.;
1556 timeout_blocktime = 0.; 1606 timeout_blocktime = 0.;
1557 backend = 0; 1607 backend = 0;
1558 backend_fd = -1; 1608 backend_fd = -1;
1559 gotasync = 0; 1609 sig_pending = 0;
1610#if EV_ASYNC_ENABLE
1611 async_pending = 0;
1612#endif
1560#if EV_USE_INOTIFY 1613#if EV_USE_INOTIFY
1561 fs_fd = -2; 1614 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1562#endif 1615#endif
1563#if EV_USE_SIGNALFD 1616#if EV_USE_SIGNALFD
1564 sigfd = -2; 1617 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1565#endif 1618#endif
1566
1567 /* pid check not overridable via env */
1568#ifndef _WIN32
1569 if (flags & EVFLAG_FORKCHECK)
1570 curpid = getpid ();
1571#endif
1572
1573 if (!(flags & EVFLAG_NOENV)
1574 && !enable_secure ()
1575 && getenv ("LIBEV_FLAGS"))
1576 flags = atoi (getenv ("LIBEV_FLAGS"));
1577 1619
1578 if (!(flags & 0x0000ffffU)) 1620 if (!(flags & 0x0000ffffU))
1579 flags |= ev_recommended_backends (); 1621 flags |= ev_recommended_backends ();
1580 1622
1581#if EV_USE_PORT 1623#if EV_USE_PORT
… …
1617 close (evfd); 1659 close (evfd);
1618#endif 1660#endif
1619 1661
1620 if (evpipe [0] >= 0) 1662 if (evpipe [0] >= 0)
1621 { 1663 {
1622 close (evpipe [0]); 1664 EV_WIN32_CLOSE_FD (evpipe [0]);
1623 close (evpipe [1]); 1665 EV_WIN32_CLOSE_FD (evpipe [1]);
1624 } 1666 }
1625 } 1667 }
1626 1668
1627#if EV_USE_SIGNALFD 1669#if EV_USE_SIGNALFD
1628 if (ev_is_active (&sigfd_w)) 1670 if (ev_is_active (&sigfd_w))
1629 {
1630 /*ev_ref (EV_A);*/
1631 /*ev_io_stop (EV_A_ &sigfd_w);*/
1632
1633 close (sigfd); 1671 close (sigfd);
1634 }
1635#endif 1672#endif
1636 1673
1637#if EV_USE_INOTIFY 1674#if EV_USE_INOTIFY
1638 if (fs_fd >= 0) 1675 if (fs_fd >= 0)
1639 close (fs_fd); 1676 close (fs_fd);
… …
1709 1746
1710 if (ev_is_active (&pipe_w)) 1747 if (ev_is_active (&pipe_w))
1711 { 1748 {
1712 /* this "locks" the handlers against writing to the pipe */ 1749 /* this "locks" the handlers against writing to the pipe */
1713 /* while we modify the fd vars */ 1750 /* while we modify the fd vars */
1714 gotsig = 1; 1751 sig_pending = 1;
1715#if EV_ASYNC_ENABLE 1752#if EV_ASYNC_ENABLE
1716 gotasync = 1; 1753 async_pending = 1;
1717#endif 1754#endif
1718 1755
1719 ev_ref (EV_A); 1756 ev_ref (EV_A);
1720 ev_io_stop (EV_A_ &pipe_w); 1757 ev_io_stop (EV_A_ &pipe_w);
1721 1758
… …
1724 close (evfd); 1761 close (evfd);
1725#endif 1762#endif
1726 1763
1727 if (evpipe [0] >= 0) 1764 if (evpipe [0] >= 0)
1728 { 1765 {
1729 close (evpipe [0]); 1766 EV_WIN32_CLOSE_FD (evpipe [0]);
1730 close (evpipe [1]); 1767 EV_WIN32_CLOSE_FD (evpipe [1]);
1731 } 1768 }
1732 1769
1733 evpipe_init (EV_A); 1770 evpipe_init (EV_A);
1734 /* now iterate over everything, in case we missed something */ 1771 /* now iterate over everything, in case we missed something */
1735 pipecb (EV_A_ &pipe_w, EV_READ); 1772 pipecb (EV_A_ &pipe_w, EV_READ);
… …
1741#if EV_MULTIPLICITY 1778#if EV_MULTIPLICITY
1742 1779
1743struct ev_loop * 1780struct ev_loop *
1744ev_loop_new (unsigned int flags) 1781ev_loop_new (unsigned int flags)
1745{ 1782{
1746 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1783 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1747 1784
1748 memset (loop, 0, sizeof (struct ev_loop)); 1785 memset (EV_A, 0, sizeof (struct ev_loop));
1749 loop_init (EV_A_ flags); 1786 loop_init (EV_A_ flags);
1750 1787
1751 if (ev_backend (EV_A)) 1788 if (ev_backend (EV_A))
1752 return loop; 1789 return EV_A;
1753 1790
1754 return 0; 1791 return 0;
1755} 1792}
1756 1793
1757void 1794void
… …
1861 assert (checkmax >= checkcnt); 1898 assert (checkmax >= checkcnt);
1862 array_verify (EV_A_ (W *)checks, checkcnt); 1899 array_verify (EV_A_ (W *)checks, checkcnt);
1863 1900
1864# if 0 1901# if 0
1865 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1902 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1866 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 1903 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1867# endif 1904# endif
1868#endif 1905#endif
1869} 1906}
1870#endif 1907#endif
1871 1908
… …
1878#endif 1915#endif
1879{ 1916{
1880 if (!ev_default_loop_ptr) 1917 if (!ev_default_loop_ptr)
1881 { 1918 {
1882#if EV_MULTIPLICITY 1919#if EV_MULTIPLICITY
1883 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1920 EV_P = ev_default_loop_ptr = &default_loop_struct;
1884#else 1921#else
1885 ev_default_loop_ptr = 1; 1922 ev_default_loop_ptr = 1;
1886#endif 1923#endif
1887 1924
1888 loop_init (EV_A_ flags); 1925 loop_init (EV_A_ flags);
… …
1905 1942
1906void 1943void
1907ev_default_destroy (void) 1944ev_default_destroy (void)
1908{ 1945{
1909#if EV_MULTIPLICITY 1946#if EV_MULTIPLICITY
1910 struct ev_loop *loop = ev_default_loop_ptr; 1947 EV_P = ev_default_loop_ptr;
1911#endif 1948#endif
1912 1949
1913 ev_default_loop_ptr = 0; 1950 ev_default_loop_ptr = 0;
1914 1951
1915#ifndef _WIN32 1952#ifndef _WIN32
… …
1922 1959
1923void 1960void
1924ev_default_fork (void) 1961ev_default_fork (void)
1925{ 1962{
1926#if EV_MULTIPLICITY 1963#if EV_MULTIPLICITY
1927 struct ev_loop *loop = ev_default_loop_ptr; 1964 EV_P = ev_default_loop_ptr;
1928#endif 1965#endif
1929 1966
1930 postfork = 1; /* must be in line with ev_loop_fork */ 1967 postfork = 1; /* must be in line with ev_loop_fork */
1931} 1968}
1932 1969
… …
2127 ANHE_at_cache (*he); 2164 ANHE_at_cache (*he);
2128 } 2165 }
2129} 2166}
2130 2167
2131/* fetch new monotonic and realtime times from the kernel */ 2168/* fetch new monotonic and realtime times from the kernel */
2132/* also detetc if there was a timejump, and act accordingly */ 2169/* also detect if there was a timejump, and act accordingly */
2133inline_speed void 2170inline_speed void
2134time_update (EV_P_ ev_tstamp max_block) 2171time_update (EV_P_ ev_tstamp max_block)
2135{ 2172{
2136#if EV_USE_MONOTONIC 2173#if EV_USE_MONOTONIC
2137 if (expect_true (have_monotonic)) 2174 if (expect_true (have_monotonic))
… …
2398inline_size void 2435inline_size void
2399wlist_del (WL *head, WL elem) 2436wlist_del (WL *head, WL elem)
2400{ 2437{
2401 while (*head) 2438 while (*head)
2402 { 2439 {
2403 if (*head == elem) 2440 if (expect_true (*head == elem))
2404 { 2441 {
2405 *head = elem->next; 2442 *head = elem->next;
2406 return; 2443 break;
2407 } 2444 }
2408 2445
2409 head = &(*head)->next; 2446 head = &(*head)->next;
2410 } 2447 }
2411} 2448}
… …
2471 2508
2472 if (expect_false (ev_is_active (w))) 2509 if (expect_false (ev_is_active (w)))
2473 return; 2510 return;
2474 2511
2475 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 2512 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2476 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 2513 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2477 2514
2478 EV_FREQUENT_CHECK; 2515 EV_FREQUENT_CHECK;
2479 2516
2480 ev_start (EV_A_ (W)w, 1); 2517 ev_start (EV_A_ (W)w, 1);
2481 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 2518 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
… …
2551 timers [active] = timers [timercnt + HEAP0]; 2588 timers [active] = timers [timercnt + HEAP0];
2552 adjustheap (timers, timercnt, active); 2589 adjustheap (timers, timercnt, active);
2553 } 2590 }
2554 } 2591 }
2555 2592
2556 EV_FREQUENT_CHECK;
2557
2558 ev_at (w) -= mn_now; 2593 ev_at (w) -= mn_now;
2559 2594
2560 ev_stop (EV_A_ (W)w); 2595 ev_stop (EV_A_ (W)w);
2596
2597 EV_FREQUENT_CHECK;
2561} 2598}
2562 2599
2563void noinline 2600void noinline
2564ev_timer_again (EV_P_ ev_timer *w) 2601ev_timer_again (EV_P_ ev_timer *w)
2565{ 2602{
… …
2644 periodics [active] = periodics [periodiccnt + HEAP0]; 2681 periodics [active] = periodics [periodiccnt + HEAP0];
2645 adjustheap (periodics, periodiccnt, active); 2682 adjustheap (periodics, periodiccnt, active);
2646 } 2683 }
2647 } 2684 }
2648 2685
2649 EV_FREQUENT_CHECK;
2650
2651 ev_stop (EV_A_ (W)w); 2686 ev_stop (EV_A_ (W)w);
2687
2688 EV_FREQUENT_CHECK;
2652} 2689}
2653 2690
2654void noinline 2691void noinline
2655ev_periodic_again (EV_P_ ev_periodic *w) 2692ev_periodic_again (EV_P_ ev_periodic *w)
2656{ 2693{
… …
2665#endif 2702#endif
2666 2703
2667void noinline 2704void noinline
2668ev_signal_start (EV_P_ ev_signal *w) 2705ev_signal_start (EV_P_ ev_signal *w)
2669{ 2706{
2670#if EV_MULTIPLICITY
2671 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2672#endif
2673 if (expect_false (ev_is_active (w))) 2707 if (expect_false (ev_is_active (w)))
2674 return; 2708 return;
2675 2709
2676 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 2710 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2711
2712#if EV_MULTIPLICITY
2713 assert (("libev: a signal must not be attached to two different loops",
2714 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2715
2716 signals [w->signum - 1].loop = EV_A;
2717#endif
2677 2718
2678 EV_FREQUENT_CHECK; 2719 EV_FREQUENT_CHECK;
2679 2720
2680#if EV_USE_SIGNALFD 2721#if EV_USE_SIGNALFD
2681 if (sigfd == -2) 2722 if (sigfd == -2)
… …
2703 sigaddset (&sigfd_set, w->signum); 2744 sigaddset (&sigfd_set, w->signum);
2704 sigprocmask (SIG_BLOCK, &sigfd_set, 0); 2745 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2705 2746
2706 signalfd (sigfd, &sigfd_set, 0); 2747 signalfd (sigfd, &sigfd_set, 0);
2707 } 2748 }
2708 else
2709#endif
2710 evpipe_init (EV_A);
2711
2712 {
2713#ifndef _WIN32
2714 sigset_t full, prev;
2715 sigfillset (&full);
2716 sigprocmask (SIG_SETMASK, &full, &prev);
2717#endif
2718
2719 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
2720
2721#ifndef _WIN32
2722# if EV_USE_SIGNALFD
2723 if (sigfd < 0)/*TODO*/
2724# endif 2749#endif
2725 sigdelset (&prev, w->signum);
2726 sigprocmask (SIG_SETMASK, &prev, 0);
2727#endif
2728 }
2729 2750
2730 ev_start (EV_A_ (W)w, 1); 2751 ev_start (EV_A_ (W)w, 1);
2731 wlist_add (&signals [w->signum - 1].head, (WL)w); 2752 wlist_add (&signals [w->signum - 1].head, (WL)w);
2732 2753
2733 if (!((WL)w)->next) 2754 if (!((WL)w)->next)
2734 {
2735#if _WIN32
2736 signal (w->signum, ev_sighandler);
2737#else
2738# if EV_USE_SIGNALFD 2755# if EV_USE_SIGNALFD
2739 if (sigfd < 0) /*TODO*/ 2756 if (sigfd < 0) /*TODO*/
2740# endif 2757# endif
2741 { 2758 {
2759# ifdef _WIN32
2760 evpipe_init (EV_A);
2761
2762 signal (w->signum, ev_sighandler);
2763# else
2742 struct sigaction sa = { }; 2764 struct sigaction sa;
2765
2766 evpipe_init (EV_A);
2767
2743 sa.sa_handler = ev_sighandler; 2768 sa.sa_handler = ev_sighandler;
2744 sigfillset (&sa.sa_mask); 2769 sigfillset (&sa.sa_mask);
2745 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2770 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2746 sigaction (w->signum, &sa, 0); 2771 sigaction (w->signum, &sa, 0);
2772
2773 sigemptyset (&sa.sa_mask);
2774 sigaddset (&sa.sa_mask, w->signum);
2775 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2776#endif
2747 } 2777 }
2748#endif
2749 }
2750 2778
2751 EV_FREQUENT_CHECK; 2779 EV_FREQUENT_CHECK;
2752} 2780}
2753 2781
2754void noinline 2782void noinline
… …
2762 2790
2763 wlist_del (&signals [w->signum - 1].head, (WL)w); 2791 wlist_del (&signals [w->signum - 1].head, (WL)w);
2764 ev_stop (EV_A_ (W)w); 2792 ev_stop (EV_A_ (W)w);
2765 2793
2766 if (!signals [w->signum - 1].head) 2794 if (!signals [w->signum - 1].head)
2795 {
2796#if EV_MULTIPLICITY
2797 signals [w->signum - 1].loop = 0; /* unattach from signal */
2798#endif
2767#if EV_USE_SIGNALFD 2799#if EV_USE_SIGNALFD
2768 if (sigfd >= 0) 2800 if (sigfd >= 0)
2769 { 2801 {
2770 sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D 2802 sigset_t ss;
2803
2804 sigemptyset (&ss);
2805 sigaddset (&ss, w->signum);
2771 sigdelset (&sigfd_set, w->signum); 2806 sigdelset (&sigfd_set, w->signum);
2807
2772 signalfd (sigfd, &sigfd_set, 0); 2808 signalfd (sigfd, &sigfd_set, 0);
2773 sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D 2809 sigprocmask (SIG_UNBLOCK, &ss, 0);
2774 /*TODO: maybe unblock signal? */
2775 } 2810 }
2776 else 2811 else
2777#endif 2812#endif
2778 signal (w->signum, SIG_DFL); 2813 signal (w->signum, SIG_DFL);
2814 }
2779 2815
2780 EV_FREQUENT_CHECK; 2816 EV_FREQUENT_CHECK;
2781} 2817}
2782 2818
2783void 2819void
… …
2824#define MIN_STAT_INTERVAL 0.1074891 2860#define MIN_STAT_INTERVAL 0.1074891
2825 2861
2826static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2862static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2827 2863
2828#if EV_USE_INOTIFY 2864#if EV_USE_INOTIFY
2829# define EV_INOTIFY_BUFSIZE 8192 2865
2866/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2867# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2830 2868
2831static void noinline 2869static void noinline
2832infy_add (EV_P_ ev_stat *w) 2870infy_add (EV_P_ ev_stat *w)
2833{ 2871{
2834 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 2872 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
2835 2873
2836 if (w->wd < 0) 2874 if (w->wd >= 0)
2875 {
2876 struct statfs sfs;
2877
2878 /* now local changes will be tracked by inotify, but remote changes won't */
2879 /* unless the filesystem is known to be local, we therefore still poll */
2880 /* also do poll on <2.6.25, but with normal frequency */
2881
2882 if (!fs_2625)
2883 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2884 else if (!statfs (w->path, &sfs)
2885 && (sfs.f_type == 0x1373 /* devfs */
2886 || sfs.f_type == 0xEF53 /* ext2/3 */
2887 || sfs.f_type == 0x3153464a /* jfs */
2888 || sfs.f_type == 0x52654973 /* reiser3 */
2889 || sfs.f_type == 0x01021994 /* tempfs */
2890 || sfs.f_type == 0x58465342 /* xfs */))
2891 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2892 else
2893 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2837 { 2894 }
2895 else
2896 {
2897 /* can't use inotify, continue to stat */
2838 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 2898 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2839 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2840 2899
2841 /* monitor some parent directory for speedup hints */ 2900 /* if path is not there, monitor some parent directory for speedup hints */
2842 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 2901 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2843 /* but an efficiency issue only */ 2902 /* but an efficiency issue only */
2844 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2903 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2845 { 2904 {
2846 char path [4096]; 2905 char path [4096];
… …
2862 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 2921 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2863 } 2922 }
2864 } 2923 }
2865 2924
2866 if (w->wd >= 0) 2925 if (w->wd >= 0)
2867 {
2868 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 2926 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2869 2927
2870 /* now local changes will be tracked by inotify, but remote changes won't */ 2928 /* now re-arm timer, if required */
2871 /* unless the filesystem it known to be local, we therefore still poll */ 2929 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2872 /* also do poll on <2.6.25, but with normal frequency */
2873 struct statfs sfs;
2874
2875 if (fs_2625 && !statfs (w->path, &sfs))
2876 if (sfs.f_type == 0x1373 /* devfs */
2877 || sfs.f_type == 0xEF53 /* ext2/3 */
2878 || sfs.f_type == 0x3153464a /* jfs */
2879 || sfs.f_type == 0x52654973 /* reiser3 */
2880 || sfs.f_type == 0x01021994 /* tempfs */
2881 || sfs.f_type == 0x58465342 /* xfs */)
2882 return;
2883
2884 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2885 ev_timer_again (EV_A_ &w->timer); 2930 ev_timer_again (EV_A_ &w->timer);
2886 } 2931 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2887} 2932}
2888 2933
2889static void noinline 2934static void noinline
2890infy_del (EV_P_ ev_stat *w) 2935infy_del (EV_P_ ev_stat *w)
2891{ 2936{
… …
2936 2981
2937static void 2982static void
2938infy_cb (EV_P_ ev_io *w, int revents) 2983infy_cb (EV_P_ ev_io *w, int revents)
2939{ 2984{
2940 char buf [EV_INOTIFY_BUFSIZE]; 2985 char buf [EV_INOTIFY_BUFSIZE];
2941 struct inotify_event *ev = (struct inotify_event *)buf;
2942 int ofs; 2986 int ofs;
2943 int len = read (fs_fd, buf, sizeof (buf)); 2987 int len = read (fs_fd, buf, sizeof (buf));
2944 2988
2945 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 2989 for (ofs = 0; ofs < len; )
2990 {
2991 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2946 infy_wd (EV_A_ ev->wd, ev->wd, ev); 2992 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2993 ofs += sizeof (struct inotify_event) + ev->len;
2994 }
2947} 2995}
2948 2996
2949inline_size void 2997inline_size void
2950check_2625 (EV_P) 2998check_2625 (EV_P)
2951{ 2999{
… …
2967 return; 3015 return;
2968 3016
2969 fs_2625 = 1; 3017 fs_2625 = 1;
2970} 3018}
2971 3019
3020inline_size int
3021infy_newfd (void)
3022{
3023#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3024 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3025 if (fd >= 0)
3026 return fd;
3027#endif
3028 return inotify_init ();
3029}
3030
2972inline_size void 3031inline_size void
2973infy_init (EV_P) 3032infy_init (EV_P)
2974{ 3033{
2975 if (fs_fd != -2) 3034 if (fs_fd != -2)
2976 return; 3035 return;
2977 3036
2978 fs_fd = -1; 3037 fs_fd = -1;
2979 3038
2980 check_2625 (EV_A); 3039 check_2625 (EV_A);
2981 3040
2982 fs_fd = inotify_init (); 3041 fs_fd = infy_newfd ();
2983 3042
2984 if (fs_fd >= 0) 3043 if (fs_fd >= 0)
2985 { 3044 {
3045 fd_intern (fs_fd);
2986 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3046 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2987 ev_set_priority (&fs_w, EV_MAXPRI); 3047 ev_set_priority (&fs_w, EV_MAXPRI);
2988 ev_io_start (EV_A_ &fs_w); 3048 ev_io_start (EV_A_ &fs_w);
3049 ev_unref (EV_A);
2989 } 3050 }
2990} 3051}
2991 3052
2992inline_size void 3053inline_size void
2993infy_fork (EV_P) 3054infy_fork (EV_P)
… …
2995 int slot; 3056 int slot;
2996 3057
2997 if (fs_fd < 0) 3058 if (fs_fd < 0)
2998 return; 3059 return;
2999 3060
3061 ev_ref (EV_A);
3062 ev_io_stop (EV_A_ &fs_w);
3000 close (fs_fd); 3063 close (fs_fd);
3001 fs_fd = inotify_init (); 3064 fs_fd = infy_newfd ();
3065
3066 if (fs_fd >= 0)
3067 {
3068 fd_intern (fs_fd);
3069 ev_io_set (&fs_w, fs_fd, EV_READ);
3070 ev_io_start (EV_A_ &fs_w);
3071 ev_unref (EV_A);
3072 }
3002 3073
3003 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3074 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
3004 { 3075 {
3005 WL w_ = fs_hash [slot].head; 3076 WL w_ = fs_hash [slot].head;
3006 fs_hash [slot].head = 0; 3077 fs_hash [slot].head = 0;
… …
3013 w->wd = -1; 3084 w->wd = -1;
3014 3085
3015 if (fs_fd >= 0) 3086 if (fs_fd >= 0)
3016 infy_add (EV_A_ w); /* re-add, no matter what */ 3087 infy_add (EV_A_ w); /* re-add, no matter what */
3017 else 3088 else
3089 {
3090 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3091 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3018 ev_timer_again (EV_A_ &w->timer); 3092 ev_timer_again (EV_A_ &w->timer);
3093 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3094 }
3019 } 3095 }
3020 } 3096 }
3021} 3097}
3022 3098
3023#endif 3099#endif
… …
3040static void noinline 3116static void noinline
3041stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3117stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3042{ 3118{
3043 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3119 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3044 3120
3045 /* we copy this here each the time so that */ 3121 ev_statdata prev = w->attr;
3046 /* prev has the old value when the callback gets invoked */
3047 w->prev = w->attr;
3048 ev_stat_stat (EV_A_ w); 3122 ev_stat_stat (EV_A_ w);
3049 3123
3050 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3124 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
3051 if ( 3125 if (
3052 w->prev.st_dev != w->attr.st_dev 3126 prev.st_dev != w->attr.st_dev
3053 || w->prev.st_ino != w->attr.st_ino 3127 || prev.st_ino != w->attr.st_ino
3054 || w->prev.st_mode != w->attr.st_mode 3128 || prev.st_mode != w->attr.st_mode
3055 || w->prev.st_nlink != w->attr.st_nlink 3129 || prev.st_nlink != w->attr.st_nlink
3056 || w->prev.st_uid != w->attr.st_uid 3130 || prev.st_uid != w->attr.st_uid
3057 || w->prev.st_gid != w->attr.st_gid 3131 || prev.st_gid != w->attr.st_gid
3058 || w->prev.st_rdev != w->attr.st_rdev 3132 || prev.st_rdev != w->attr.st_rdev
3059 || w->prev.st_size != w->attr.st_size 3133 || prev.st_size != w->attr.st_size
3060 || w->prev.st_atime != w->attr.st_atime 3134 || prev.st_atime != w->attr.st_atime
3061 || w->prev.st_mtime != w->attr.st_mtime 3135 || prev.st_mtime != w->attr.st_mtime
3062 || w->prev.st_ctime != w->attr.st_ctime 3136 || prev.st_ctime != w->attr.st_ctime
3063 ) { 3137 ) {
3138 /* we only update w->prev on actual differences */
3139 /* in case we test more often than invoke the callback, */
3140 /* to ensure that prev is always different to attr */
3141 w->prev = prev;
3142
3064 #if EV_USE_INOTIFY 3143 #if EV_USE_INOTIFY
3065 if (fs_fd >= 0) 3144 if (fs_fd >= 0)
3066 { 3145 {
3067 infy_del (EV_A_ w); 3146 infy_del (EV_A_ w);
3068 infy_add (EV_A_ w); 3147 infy_add (EV_A_ w);
… …
3093 3172
3094 if (fs_fd >= 0) 3173 if (fs_fd >= 0)
3095 infy_add (EV_A_ w); 3174 infy_add (EV_A_ w);
3096 else 3175 else
3097#endif 3176#endif
3177 {
3098 ev_timer_again (EV_A_ &w->timer); 3178 ev_timer_again (EV_A_ &w->timer);
3179 ev_unref (EV_A);
3180 }
3099 3181
3100 ev_start (EV_A_ (W)w, 1); 3182 ev_start (EV_A_ (W)w, 1);
3101 3183
3102 EV_FREQUENT_CHECK; 3184 EV_FREQUENT_CHECK;
3103} 3185}
… …
3112 EV_FREQUENT_CHECK; 3194 EV_FREQUENT_CHECK;
3113 3195
3114#if EV_USE_INOTIFY 3196#if EV_USE_INOTIFY
3115 infy_del (EV_A_ w); 3197 infy_del (EV_A_ w);
3116#endif 3198#endif
3199
3200 if (ev_is_active (&w->timer))
3201 {
3202 ev_ref (EV_A);
3117 ev_timer_stop (EV_A_ &w->timer); 3203 ev_timer_stop (EV_A_ &w->timer);
3204 }
3118 3205
3119 ev_stop (EV_A_ (W)w); 3206 ev_stop (EV_A_ (W)w);
3120 3207
3121 EV_FREQUENT_CHECK; 3208 EV_FREQUENT_CHECK;
3122} 3209}
… …
3263embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3350embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3264{ 3351{
3265 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3352 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3266 3353
3267 { 3354 {
3268 struct ev_loop *loop = w->other; 3355 EV_P = w->other;
3269 3356
3270 while (fdchangecnt) 3357 while (fdchangecnt)
3271 { 3358 {
3272 fd_reify (EV_A); 3359 fd_reify (EV_A);
3273 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3360 ev_loop (EV_A_ EVLOOP_NONBLOCK);
… …
3281 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 3368 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3282 3369
3283 ev_embed_stop (EV_A_ w); 3370 ev_embed_stop (EV_A_ w);
3284 3371
3285 { 3372 {
3286 struct ev_loop *loop = w->other; 3373 EV_P = w->other;
3287 3374
3288 ev_loop_fork (EV_A); 3375 ev_loop_fork (EV_A);
3289 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3376 ev_loop (EV_A_ EVLOOP_NONBLOCK);
3290 } 3377 }
3291 3378
… …
3305{ 3392{
3306 if (expect_false (ev_is_active (w))) 3393 if (expect_false (ev_is_active (w)))
3307 return; 3394 return;
3308 3395
3309 { 3396 {
3310 struct ev_loop *loop = w->other; 3397 EV_P = w->other;
3311 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3398 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3312 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3399 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3313 } 3400 }
3314 3401
3315 EV_FREQUENT_CHECK; 3402 EV_FREQUENT_CHECK;
… …
3342 3429
3343 ev_io_stop (EV_A_ &w->io); 3430 ev_io_stop (EV_A_ &w->io);
3344 ev_prepare_stop (EV_A_ &w->prepare); 3431 ev_prepare_stop (EV_A_ &w->prepare);
3345 ev_fork_stop (EV_A_ &w->fork); 3432 ev_fork_stop (EV_A_ &w->fork);
3346 3433
3434 ev_stop (EV_A_ (W)w);
3435
3347 EV_FREQUENT_CHECK; 3436 EV_FREQUENT_CHECK;
3348} 3437}
3349#endif 3438#endif
3350 3439
3351#if EV_FORK_ENABLE 3440#if EV_FORK_ENABLE
… …
3427 3516
3428void 3517void
3429ev_async_send (EV_P_ ev_async *w) 3518ev_async_send (EV_P_ ev_async *w)
3430{ 3519{
3431 w->sent = 1; 3520 w->sent = 1;
3432 evpipe_write (EV_A_ &gotasync); 3521 evpipe_write (EV_A_ &async_pending);
3433} 3522}
3434#endif 3523#endif
3435 3524
3436/*****************************************************************************/ 3525/*****************************************************************************/
3437 3526
… …
3586 if (types & EV_CHECK) 3675 if (types & EV_CHECK)
3587 for (i = checkcnt; i--; ) 3676 for (i = checkcnt; i--; )
3588 cb (EV_A_ EV_CHECK, checks [i]); 3677 cb (EV_A_ EV_CHECK, checks [i]);
3589 3678
3590 if (types & EV_SIGNAL) 3679 if (types & EV_SIGNAL)
3591 for (i = 0; i < signalmax; ++i) 3680 for (i = 0; i < EV_NSIG - 1; ++i)
3592 for (wl = signals [i].head; wl; ) 3681 for (wl = signals [i].head; wl; )
3593 { 3682 {
3594 wn = wl->next; 3683 wn = wl->next;
3595 cb (EV_A_ EV_SIGNAL, wl); 3684 cb (EV_A_ EV_SIGNAL, wl);
3596 wl = wn; 3685 wl = wn;

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