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Comparing libev/ev.c (file contents):
Revision 1.325 by root, Sun Jan 24 12:31:55 2010 UTC vs.
Revision 1.337 by root, Wed Mar 10 09:18:24 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 *
… …
163 163
164#include <assert.h> 164#include <assert.h>
165#include <errno.h> 165#include <errno.h>
166#include <sys/types.h> 166#include <sys/types.h>
167#include <time.h> 167#include <time.h>
168#include <limits.h>
168 169
169#include <signal.h> 170#include <signal.h>
170 171
171#ifdef EV_H 172#ifdef EV_H
172# include EV_H 173# include EV_H
… …
183# define WIN32_LEAN_AND_MEAN 184# define WIN32_LEAN_AND_MEAN
184# include <windows.h> 185# include <windows.h>
185# ifndef EV_SELECT_IS_WINSOCKET 186# ifndef EV_SELECT_IS_WINSOCKET
186# define EV_SELECT_IS_WINSOCKET 1 187# define EV_SELECT_IS_WINSOCKET 1
187# endif 188# endif
189# undef EV_AVOID_STDIO
188#endif 190#endif
189 191
190/* this block tries to deduce configuration from header-defined symbols and defaults */ 192/* this block tries to deduce configuration from header-defined symbols and defaults */
191 193
192/* try to deduce the maximum number of signals on this platform */ 194/* try to deduce the maximum number of signals on this platform */
… …
205#elif defined (MAXSIG) 207#elif defined (MAXSIG)
206# define EV_NSIG (MAXSIG+1) 208# define EV_NSIG (MAXSIG+1)
207#elif defined (MAX_SIG) 209#elif defined (MAX_SIG)
208# define EV_NSIG (MAX_SIG+1) 210# define EV_NSIG (MAX_SIG+1)
209#elif defined (SIGARRAYSIZE) 211#elif defined (SIGARRAYSIZE)
210# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */ 212# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
211#elif defined (_sys_nsig) 213#elif defined (_sys_nsig)
212# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 214# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
213#else 215#else
214# error "unable to find value for NSIG, please report" 216# error "unable to find value for NSIG, please report"
215/* to make it compile regardless, just remove the above line */ 217/* to make it compile regardless, just remove the above line, */
218/* but consider reporting it, too! :) */
216# define EV_NSIG 65 219# define EV_NSIG 65
217#endif 220#endif
218 221
219#ifndef EV_USE_CLOCK_SYSCALL 222#ifndef EV_USE_CLOCK_SYSCALL
220# if __linux && __GLIBC__ >= 2 223# if __linux && __GLIBC__ >= 2
… …
402# endif 405# endif
403# endif 406# endif
404# ifdef __cplusplus 407# ifdef __cplusplus
405extern "C" { 408extern "C" {
406# endif 409# endif
407int eventfd (unsigned int initval, int flags); 410int (eventfd) (unsigned int initval, int flags);
408# ifdef __cplusplus 411# ifdef __cplusplus
409} 412}
410# endif 413# endif
411#endif 414#endif
412 415
… …
523# include "ev_win32.c" 526# include "ev_win32.c"
524#endif 527#endif
525 528
526/*****************************************************************************/ 529/*****************************************************************************/
527 530
531#if EV_AVOID_STDIO
532static void noinline
533ev_printerr (const char *msg)
534{
535 write (STDERR_FILENO, msg, strlen (msg));
536}
537#endif
538
528static void (*syserr_cb)(const char *msg); 539static void (*syserr_cb)(const char *msg);
529 540
530void 541void
531ev_set_syserr_cb (void (*cb)(const char *msg)) 542ev_set_syserr_cb (void (*cb)(const char *msg))
532{ 543{
… …
541 552
542 if (syserr_cb) 553 if (syserr_cb)
543 syserr_cb (msg); 554 syserr_cb (msg);
544 else 555 else
545 { 556 {
557#if EV_AVOID_STDIO
558 const char *err = strerror (errno);
559
560 ev_printerr (msg);
561 ev_printerr (": ");
562 ev_printerr (err);
563 ev_printerr ("\n");
564#else
546 perror (msg); 565 perror (msg);
566#endif
547 abort (); 567 abort ();
548 } 568 }
549} 569}
550 570
551static void * 571static void *
552ev_realloc_emul (void *ptr, long size) 572ev_realloc_emul (void *ptr, long size)
553{ 573{
574#if __GLIBC__
575 return realloc (ptr, size);
576#else
554 /* some systems, notably openbsd and darwin, fail to properly 577 /* some systems, notably openbsd and darwin, fail to properly
555 * implement realloc (x, 0) (as required by both ansi c-98 and 578 * implement realloc (x, 0) (as required by both ansi c-89 and
556 * the single unix specification, so work around them here. 579 * the single unix specification, so work around them here.
557 */ 580 */
558 581
559 if (size) 582 if (size)
560 return realloc (ptr, size); 583 return realloc (ptr, size);
561 584
562 free (ptr); 585 free (ptr);
563 return 0; 586 return 0;
587#endif
564} 588}
565 589
566static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 590static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
567 591
568void 592void
… …
576{ 600{
577 ptr = alloc (ptr, size); 601 ptr = alloc (ptr, size);
578 602
579 if (!ptr && size) 603 if (!ptr && size)
580 { 604 {
605#if EV_AVOID_STDIO
606 ev_printerr ("libev: memory allocation failed, aborting.\n");
607#else
581 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 608 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
609#endif
582 abort (); 610 abort ();
583 } 611 }
584 612
585 return ptr; 613 return ptr;
586} 614}
… …
863} 891}
864 892
865/*****************************************************************************/ 893/*****************************************************************************/
866 894
867inline_speed void 895inline_speed void
868fd_event_nc (EV_P_ int fd, int revents) 896fd_event_nocheck (EV_P_ int fd, int revents)
869{ 897{
870 ANFD *anfd = anfds + fd; 898 ANFD *anfd = anfds + fd;
871 ev_io *w; 899 ev_io *w;
872 900
873 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 901 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
885fd_event (EV_P_ int fd, int revents) 913fd_event (EV_P_ int fd, int revents)
886{ 914{
887 ANFD *anfd = anfds + fd; 915 ANFD *anfd = anfds + fd;
888 916
889 if (expect_true (!anfd->reify)) 917 if (expect_true (!anfd->reify))
890 fd_event_nc (EV_A_ fd, revents); 918 fd_event_nocheck (EV_A_ fd, revents);
891} 919}
892 920
893void 921void
894ev_feed_fd_event (EV_P_ int fd, int revents) 922ev_feed_fd_event (EV_P_ int fd, int revents)
895{ 923{
896 if (fd >= 0 && fd < anfdmax) 924 if (fd >= 0 && fd < anfdmax)
897 fd_event_nc (EV_A_ fd, revents); 925 fd_event_nocheck (EV_A_ fd, revents);
898} 926}
899 927
900/* make sure the external fd watch events are in-sync */ 928/* make sure the external fd watch events are in-sync */
901/* with the kernel/libev internal state */ 929/* with the kernel/libev internal state */
902inline_size void 930inline_size void
… …
965 ev_io_stop (EV_A_ w); 993 ev_io_stop (EV_A_ w);
966 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 994 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
967 } 995 }
968} 996}
969 997
970/* check whether the given fd is atcually valid, for error recovery */ 998/* check whether the given fd is actually valid, for error recovery */
971inline_size int 999inline_size int
972fd_valid (int fd) 1000fd_valid (int fd)
973{ 1001{
974#ifdef _WIN32 1002#ifdef _WIN32
975 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 1003 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
… …
1015 { 1043 {
1016 anfds [fd].events = 0; 1044 anfds [fd].events = 0;
1017 anfds [fd].emask = 0; 1045 anfds [fd].emask = 0;
1018 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 1046 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
1019 } 1047 }
1048}
1049
1050/* used to prepare libev internal fd's */
1051/* this is not fork-safe */
1052inline_speed void
1053fd_intern (int fd)
1054{
1055#ifdef _WIN32
1056 unsigned long arg = 1;
1057 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1058#else
1059 fcntl (fd, F_SETFD, FD_CLOEXEC);
1060 fcntl (fd, F_SETFL, O_NONBLOCK);
1061#endif
1020} 1062}
1021 1063
1022/*****************************************************************************/ 1064/*****************************************************************************/
1023 1065
1024/* 1066/*
… …
1178 1220
1179static ANSIG signals [EV_NSIG - 1]; 1221static ANSIG signals [EV_NSIG - 1];
1180 1222
1181/*****************************************************************************/ 1223/*****************************************************************************/
1182 1224
1183/* used to prepare libev internal fd's */ 1225#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1184/* this is not fork-safe */
1185inline_speed void
1186fd_intern (int fd)
1187{
1188#ifdef _WIN32
1189 unsigned long arg = 1;
1190 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1191#else
1192 fcntl (fd, F_SETFD, FD_CLOEXEC);
1193 fcntl (fd, F_SETFL, O_NONBLOCK);
1194#endif
1195}
1196 1226
1197static void noinline 1227static void noinline
1198evpipe_init (EV_P) 1228evpipe_init (EV_P)
1199{ 1229{
1200 if (!ev_is_active (&pipe_w)) 1230 if (!ev_is_active (&pipe_w))
1201 { 1231 {
1202#if EV_USE_EVENTFD 1232# if EV_USE_EVENTFD
1203 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 1233 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1204 if (evfd < 0 && errno == EINVAL) 1234 if (evfd < 0 && errno == EINVAL)
1205 evfd = eventfd (0, 0); 1235 evfd = eventfd (0, 0);
1206 1236
1207 if (evfd >= 0) 1237 if (evfd >= 0)
… …
1209 evpipe [0] = -1; 1239 evpipe [0] = -1;
1210 fd_intern (evfd); /* doing it twice doesn't hurt */ 1240 fd_intern (evfd); /* doing it twice doesn't hurt */
1211 ev_io_set (&pipe_w, evfd, EV_READ); 1241 ev_io_set (&pipe_w, evfd, EV_READ);
1212 } 1242 }
1213 else 1243 else
1214#endif 1244# endif
1215 { 1245 {
1216 while (pipe (evpipe)) 1246 while (pipe (evpipe))
1217 ev_syserr ("(libev) error creating signal/async pipe"); 1247 ev_syserr ("(libev) error creating signal/async pipe");
1218 1248
1219 fd_intern (evpipe [0]); 1249 fd_intern (evpipe [0]);
… …
1230evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1260evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1231{ 1261{
1232 if (!*flag) 1262 if (!*flag)
1233 { 1263 {
1234 int old_errno = errno; /* save errno because write might clobber it */ 1264 int old_errno = errno; /* save errno because write might clobber it */
1265 char dummy;
1235 1266
1236 *flag = 1; 1267 *flag = 1;
1237 1268
1238#if EV_USE_EVENTFD 1269#if EV_USE_EVENTFD
1239 if (evfd >= 0) 1270 if (evfd >= 0)
… …
1241 uint64_t counter = 1; 1272 uint64_t counter = 1;
1242 write (evfd, &counter, sizeof (uint64_t)); 1273 write (evfd, &counter, sizeof (uint64_t));
1243 } 1274 }
1244 else 1275 else
1245#endif 1276#endif
1246 write (evpipe [1], &old_errno, 1); 1277 write (evpipe [1], &dummy, 1);
1247 1278
1248 errno = old_errno; 1279 errno = old_errno;
1249 } 1280 }
1250} 1281}
1251 1282
… …
1352 break; 1383 break;
1353 } 1384 }
1354} 1385}
1355#endif 1386#endif
1356 1387
1388#endif
1389
1357/*****************************************************************************/ 1390/*****************************************************************************/
1358 1391
1392#if EV_CHILD_ENABLE
1359static WL childs [EV_PID_HASHSIZE]; 1393static WL childs [EV_PID_HASHSIZE];
1360
1361#ifndef _WIN32
1362 1394
1363static ev_signal childev; 1395static ev_signal childev;
1364 1396
1365#ifndef WIFCONTINUED 1397#ifndef WIFCONTINUED
1366# define WIFCONTINUED(status) 0 1398# define WIFCONTINUED(status) 0
… …
1635 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1667 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1636#endif 1668#endif
1637 1669
1638 ev_prepare_init (&pending_w, pendingcb); 1670 ev_prepare_init (&pending_w, pendingcb);
1639 1671
1672#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1640 ev_init (&pipe_w, pipecb); 1673 ev_init (&pipe_w, pipecb);
1641 ev_set_priority (&pipe_w, EV_MAXPRI); 1674 ev_set_priority (&pipe_w, EV_MAXPRI);
1675#endif
1642 } 1676 }
1643} 1677}
1644 1678
1645/* free up a loop structure */ 1679/* free up a loop structure */
1646static void noinline 1680static void noinline
… …
1764 { 1798 {
1765 EV_WIN32_CLOSE_FD (evpipe [0]); 1799 EV_WIN32_CLOSE_FD (evpipe [0]);
1766 EV_WIN32_CLOSE_FD (evpipe [1]); 1800 EV_WIN32_CLOSE_FD (evpipe [1]);
1767 } 1801 }
1768 1802
1803#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1769 evpipe_init (EV_A); 1804 evpipe_init (EV_A);
1770 /* now iterate over everything, in case we missed something */ 1805 /* now iterate over everything, in case we missed something */
1771 pipecb (EV_A_ &pipe_w, EV_READ); 1806 pipecb (EV_A_ &pipe_w, EV_READ);
1807#endif
1772 } 1808 }
1773 1809
1774 postfork = 0; 1810 postfork = 0;
1775} 1811}
1776 1812
… …
1889#if EV_ASYNC_ENABLE 1925#if EV_ASYNC_ENABLE
1890 assert (asyncmax >= asynccnt); 1926 assert (asyncmax >= asynccnt);
1891 array_verify (EV_A_ (W *)asyncs, asynccnt); 1927 array_verify (EV_A_ (W *)asyncs, asynccnt);
1892#endif 1928#endif
1893 1929
1930#if EV_PREPARE_ENABLE
1894 assert (preparemax >= preparecnt); 1931 assert (preparemax >= preparecnt);
1895 array_verify (EV_A_ (W *)prepares, preparecnt); 1932 array_verify (EV_A_ (W *)prepares, preparecnt);
1933#endif
1896 1934
1935#if EV_CHECK_ENABLE
1897 assert (checkmax >= checkcnt); 1936 assert (checkmax >= checkcnt);
1898 array_verify (EV_A_ (W *)checks, checkcnt); 1937 array_verify (EV_A_ (W *)checks, checkcnt);
1938#endif
1899 1939
1900# if 0 1940# if 0
1941#if EV_CHILD_ENABLE
1901 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1942 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1902 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) 1943 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1944#endif
1903# endif 1945# endif
1904#endif 1946#endif
1905} 1947}
1906#endif 1948#endif
1907 1949
… …
1923 1965
1924 loop_init (EV_A_ flags); 1966 loop_init (EV_A_ flags);
1925 1967
1926 if (ev_backend (EV_A)) 1968 if (ev_backend (EV_A))
1927 { 1969 {
1928#ifndef _WIN32 1970#if EV_CHILD_ENABLE
1929 ev_signal_init (&childev, childcb, SIGCHLD); 1971 ev_signal_init (&childev, childcb, SIGCHLD);
1930 ev_set_priority (&childev, EV_MAXPRI); 1972 ev_set_priority (&childev, EV_MAXPRI);
1931 ev_signal_start (EV_A_ &childev); 1973 ev_signal_start (EV_A_ &childev);
1932 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1974 ev_unref (EV_A); /* child watcher should not keep loop alive */
1933#endif 1975#endif
… …
1946 EV_P = ev_default_loop_ptr; 1988 EV_P = ev_default_loop_ptr;
1947#endif 1989#endif
1948 1990
1949 ev_default_loop_ptr = 0; 1991 ev_default_loop_ptr = 0;
1950 1992
1951#ifndef _WIN32 1993#if EV_CHILD_ENABLE
1952 ev_ref (EV_A); /* child watcher */ 1994 ev_ref (EV_A); /* child watcher */
1953 ev_signal_stop (EV_A_ &childev); 1995 ev_signal_stop (EV_A_ &childev);
1954#endif 1996#endif
1955 1997
1956 loop_destroy (EV_A); 1998 loop_destroy (EV_A);
… …
2268 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2310 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2269 EV_INVOKE_PENDING; 2311 EV_INVOKE_PENDING;
2270 } 2312 }
2271#endif 2313#endif
2272 2314
2315#if EV_PREPARE_ENABLE
2273 /* queue prepare watchers (and execute them) */ 2316 /* queue prepare watchers (and execute them) */
2274 if (expect_false (preparecnt)) 2317 if (expect_false (preparecnt))
2275 { 2318 {
2276 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2319 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2277 EV_INVOKE_PENDING; 2320 EV_INVOKE_PENDING;
2278 } 2321 }
2322#endif
2279 2323
2280 if (expect_false (loop_done)) 2324 if (expect_false (loop_done))
2281 break; 2325 break;
2282 2326
2283 /* we might have forked, so reify kernel state if necessary */ 2327 /* we might have forked, so reify kernel state if necessary */
… …
2356#if EV_IDLE_ENABLE 2400#if EV_IDLE_ENABLE
2357 /* queue idle watchers unless other events are pending */ 2401 /* queue idle watchers unless other events are pending */
2358 idle_reify (EV_A); 2402 idle_reify (EV_A);
2359#endif 2403#endif
2360 2404
2405#if EV_CHECK_ENABLE
2361 /* queue check watchers, to be executed first */ 2406 /* queue check watchers, to be executed first */
2362 if (expect_false (checkcnt)) 2407 if (expect_false (checkcnt))
2363 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2408 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2409#endif
2364 2410
2365 EV_INVOKE_PENDING; 2411 EV_INVOKE_PENDING;
2366 } 2412 }
2367 while (expect_true ( 2413 while (expect_true (
2368 activecnt 2414 activecnt
… …
2507 2553
2508 if (expect_false (ev_is_active (w))) 2554 if (expect_false (ev_is_active (w)))
2509 return; 2555 return;
2510 2556
2511 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 2557 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2512 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 2558 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2513 2559
2514 EV_FREQUENT_CHECK; 2560 EV_FREQUENT_CHECK;
2515 2561
2516 ev_start (EV_A_ (W)w, 1); 2562 ev_start (EV_A_ (W)w, 1);
2517 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 2563 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
… …
2587 timers [active] = timers [timercnt + HEAP0]; 2633 timers [active] = timers [timercnt + HEAP0];
2588 adjustheap (timers, timercnt, active); 2634 adjustheap (timers, timercnt, active);
2589 } 2635 }
2590 } 2636 }
2591 2637
2592 EV_FREQUENT_CHECK;
2593
2594 ev_at (w) -= mn_now; 2638 ev_at (w) -= mn_now;
2595 2639
2596 ev_stop (EV_A_ (W)w); 2640 ev_stop (EV_A_ (W)w);
2641
2642 EV_FREQUENT_CHECK;
2597} 2643}
2598 2644
2599void noinline 2645void noinline
2600ev_timer_again (EV_P_ ev_timer *w) 2646ev_timer_again (EV_P_ ev_timer *w)
2601{ 2647{
… …
2680 periodics [active] = periodics [periodiccnt + HEAP0]; 2726 periodics [active] = periodics [periodiccnt + HEAP0];
2681 adjustheap (periodics, periodiccnt, active); 2727 adjustheap (periodics, periodiccnt, active);
2682 } 2728 }
2683 } 2729 }
2684 2730
2685 EV_FREQUENT_CHECK;
2686
2687 ev_stop (EV_A_ (W)w); 2731 ev_stop (EV_A_ (W)w);
2732
2733 EV_FREQUENT_CHECK;
2688} 2734}
2689 2735
2690void noinline 2736void noinline
2691ev_periodic_again (EV_P_ ev_periodic *w) 2737ev_periodic_again (EV_P_ ev_periodic *w)
2692{ 2738{
… …
2697#endif 2743#endif
2698 2744
2699#ifndef SA_RESTART 2745#ifndef SA_RESTART
2700# define SA_RESTART 0 2746# define SA_RESTART 0
2701#endif 2747#endif
2748
2749#if EV_SIGNAL_ENABLE
2702 2750
2703void noinline 2751void noinline
2704ev_signal_start (EV_P_ ev_signal *w) 2752ev_signal_start (EV_P_ ev_signal *w)
2705{ 2753{
2706 if (expect_false (ev_is_active (w))) 2754 if (expect_false (ev_is_active (w)))
… …
2813 } 2861 }
2814 2862
2815 EV_FREQUENT_CHECK; 2863 EV_FREQUENT_CHECK;
2816} 2864}
2817 2865
2866#endif
2867
2868#if EV_CHILD_ENABLE
2869
2818void 2870void
2819ev_child_start (EV_P_ ev_child *w) 2871ev_child_start (EV_P_ ev_child *w)
2820{ 2872{
2821#if EV_MULTIPLICITY 2873#if EV_MULTIPLICITY
2822 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2874 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
… …
2845 ev_stop (EV_A_ (W)w); 2897 ev_stop (EV_A_ (W)w);
2846 2898
2847 EV_FREQUENT_CHECK; 2899 EV_FREQUENT_CHECK;
2848} 2900}
2849 2901
2902#endif
2903
2850#if EV_STAT_ENABLE 2904#if EV_STAT_ENABLE
2851 2905
2852# ifdef _WIN32 2906# ifdef _WIN32
2853# undef lstat 2907# undef lstat
2854# define lstat(a,b) _stati64 (a,b) 2908# define lstat(a,b) _stati64 (a,b)
… …
2859#define MIN_STAT_INTERVAL 0.1074891 2913#define MIN_STAT_INTERVAL 0.1074891
2860 2914
2861static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2915static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2862 2916
2863#if EV_USE_INOTIFY 2917#if EV_USE_INOTIFY
2864# define EV_INOTIFY_BUFSIZE 8192 2918
2919/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
2920# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2865 2921
2866static void noinline 2922static void noinline
2867infy_add (EV_P_ ev_stat *w) 2923infy_add (EV_P_ ev_stat *w)
2868{ 2924{
2869 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); 2925 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);
… …
2978 3034
2979static void 3035static void
2980infy_cb (EV_P_ ev_io *w, int revents) 3036infy_cb (EV_P_ ev_io *w, int revents)
2981{ 3037{
2982 char buf [EV_INOTIFY_BUFSIZE]; 3038 char buf [EV_INOTIFY_BUFSIZE];
2983 struct inotify_event *ev = (struct inotify_event *)buf;
2984 int ofs; 3039 int ofs;
2985 int len = read (fs_fd, buf, sizeof (buf)); 3040 int len = read (fs_fd, buf, sizeof (buf));
2986 3041
2987 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3042 for (ofs = 0; ofs < len; )
3043 {
3044 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2988 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3045 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3046 ofs += sizeof (struct inotify_event) + ev->len;
3047 }
3048}
3049
3050inline_size unsigned int
3051ev_linux_version (void)
3052{
3053 struct utsname buf;
3054 unsigned int v;
3055 int i;
3056 char *p = buf.release;
3057
3058 if (uname (&buf))
3059 return 0;
3060
3061 for (i = 3+1; --i; )
3062 {
3063 unsigned int c = 0;
3064
3065 for (;;)
3066 {
3067 if (*p >= '0' && *p <= '9')
3068 c = c * 10 + *p++ - '0';
3069 else
3070 {
3071 p += *p == '.';
3072 break;
3073 }
3074 }
3075
3076 v = (v << 8) | c;
3077 }
3078
3079 return v;
2989} 3080}
2990 3081
2991inline_size void 3082inline_size void
2992check_2625 (EV_P) 3083ev_check_2625 (EV_P)
2993{ 3084{
2994 /* kernels < 2.6.25 are borked 3085 /* kernels < 2.6.25 are borked
2995 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3086 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2996 */ 3087 */
2997 struct utsname buf; 3088 if (ev_linux_version () < 0x020619)
2998 int major, minor, micro;
2999
3000 if (uname (&buf))
3001 return;
3002
3003 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
3004 return;
3005
3006 if (major < 2
3007 || (major == 2 && minor < 6)
3008 || (major == 2 && minor == 6 && micro < 25))
3009 return; 3089 return;
3010 3090
3011 fs_2625 = 1; 3091 fs_2625 = 1;
3012} 3092}
3013 3093
… …
3028 if (fs_fd != -2) 3108 if (fs_fd != -2)
3029 return; 3109 return;
3030 3110
3031 fs_fd = -1; 3111 fs_fd = -1;
3032 3112
3033 check_2625 (EV_A); 3113 ev_check_2625 (EV_A);
3034 3114
3035 fs_fd = infy_newfd (); 3115 fs_fd = infy_newfd ();
3036 3116
3037 if (fs_fd >= 0) 3117 if (fs_fd >= 0)
3038 { 3118 {
… …
3248 3328
3249 EV_FREQUENT_CHECK; 3329 EV_FREQUENT_CHECK;
3250} 3330}
3251#endif 3331#endif
3252 3332
3333#if EV_PREPARE_ENABLE
3253void 3334void
3254ev_prepare_start (EV_P_ ev_prepare *w) 3335ev_prepare_start (EV_P_ ev_prepare *w)
3255{ 3336{
3256 if (expect_false (ev_is_active (w))) 3337 if (expect_false (ev_is_active (w)))
3257 return; 3338 return;
… …
3283 3364
3284 ev_stop (EV_A_ (W)w); 3365 ev_stop (EV_A_ (W)w);
3285 3366
3286 EV_FREQUENT_CHECK; 3367 EV_FREQUENT_CHECK;
3287} 3368}
3369#endif
3288 3370
3371#if EV_CHECK_ENABLE
3289void 3372void
3290ev_check_start (EV_P_ ev_check *w) 3373ev_check_start (EV_P_ ev_check *w)
3291{ 3374{
3292 if (expect_false (ev_is_active (w))) 3375 if (expect_false (ev_is_active (w)))
3293 return; 3376 return;
… …
3319 3402
3320 ev_stop (EV_A_ (W)w); 3403 ev_stop (EV_A_ (W)w);
3321 3404
3322 EV_FREQUENT_CHECK; 3405 EV_FREQUENT_CHECK;
3323} 3406}
3407#endif
3324 3408
3325#if EV_EMBED_ENABLE 3409#if EV_EMBED_ENABLE
3326void noinline 3410void noinline
3327ev_embed_sweep (EV_P_ ev_embed *w) 3411ev_embed_sweep (EV_P_ ev_embed *w)
3328{ 3412{
… …
3422 EV_FREQUENT_CHECK; 3506 EV_FREQUENT_CHECK;
3423 3507
3424 ev_io_stop (EV_A_ &w->io); 3508 ev_io_stop (EV_A_ &w->io);
3425 ev_prepare_stop (EV_A_ &w->prepare); 3509 ev_prepare_stop (EV_A_ &w->prepare);
3426 ev_fork_stop (EV_A_ &w->fork); 3510 ev_fork_stop (EV_A_ &w->fork);
3511
3512 ev_stop (EV_A_ (W)w);
3427 3513
3428 EV_FREQUENT_CHECK; 3514 EV_FREQUENT_CHECK;
3429} 3515}
3430#endif 3516#endif
3431 3517
… …
3655 if (types & EV_ASYNC) 3741 if (types & EV_ASYNC)
3656 for (i = asynccnt; i--; ) 3742 for (i = asynccnt; i--; )
3657 cb (EV_A_ EV_ASYNC, asyncs [i]); 3743 cb (EV_A_ EV_ASYNC, asyncs [i]);
3658#endif 3744#endif
3659 3745
3746#if EV_PREPARE_ENABLE
3660 if (types & EV_PREPARE) 3747 if (types & EV_PREPARE)
3661 for (i = preparecnt; i--; ) 3748 for (i = preparecnt; i--; )
3662#if EV_EMBED_ENABLE 3749# if EV_EMBED_ENABLE
3663 if (ev_cb (prepares [i]) != embed_prepare_cb) 3750 if (ev_cb (prepares [i]) != embed_prepare_cb)
3664#endif 3751# endif
3665 cb (EV_A_ EV_PREPARE, prepares [i]); 3752 cb (EV_A_ EV_PREPARE, prepares [i]);
3753#endif
3666 3754
3755#if EV_CHECK_ENABLE
3667 if (types & EV_CHECK) 3756 if (types & EV_CHECK)
3668 for (i = checkcnt; i--; ) 3757 for (i = checkcnt; i--; )
3669 cb (EV_A_ EV_CHECK, checks [i]); 3758 cb (EV_A_ EV_CHECK, checks [i]);
3759#endif
3670 3760
3761#if EV_SIGNAL_ENABLE
3671 if (types & EV_SIGNAL) 3762 if (types & EV_SIGNAL)
3672 for (i = 0; i < EV_NSIG - 1; ++i) 3763 for (i = 0; i < EV_NSIG - 1; ++i)
3673 for (wl = signals [i].head; wl; ) 3764 for (wl = signals [i].head; wl; )
3674 { 3765 {
3675 wn = wl->next; 3766 wn = wl->next;
3676 cb (EV_A_ EV_SIGNAL, wl); 3767 cb (EV_A_ EV_SIGNAL, wl);
3677 wl = wn; 3768 wl = wn;
3678 } 3769 }
3770#endif
3679 3771
3772#if EV_CHILD_ENABLE
3680 if (types & EV_CHILD) 3773 if (types & EV_CHILD)
3681 for (i = EV_PID_HASHSIZE; i--; ) 3774 for (i = EV_PID_HASHSIZE; i--; )
3682 for (wl = childs [i]; wl; ) 3775 for (wl = childs [i]; wl; )
3683 { 3776 {
3684 wn = wl->next; 3777 wn = wl->next;
3685 cb (EV_A_ EV_CHILD, wl); 3778 cb (EV_A_ EV_CHILD, wl);
3686 wl = wn; 3779 wl = wn;
3687 } 3780 }
3781#endif
3688/* EV_STAT 0x00001000 /* stat data changed */ 3782/* EV_STAT 0x00001000 /* stat data changed */
3689/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 3783/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3690} 3784}
3691#endif 3785#endif
3692 3786

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