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 |
… | |
… | |
186 | # endif |
188 | # endif |
187 | #endif |
189 | #endif |
188 | |
190 | |
189 | /* this block tries to deduce configuration from header-defined symbols and defaults */ |
191 | /* this block tries to deduce configuration from header-defined symbols and defaults */ |
190 | |
192 | |
|
|
193 | /* try to deduce the maximum number of signals on this platform */ |
|
|
194 | #if defined (EV_NSIG) |
|
|
195 | /* use what's provided */ |
|
|
196 | #elif defined (NSIG) |
|
|
197 | # define EV_NSIG (NSIG) |
|
|
198 | #elif defined(_NSIG) |
|
|
199 | # define EV_NSIG (_NSIG) |
|
|
200 | #elif defined (SIGMAX) |
|
|
201 | # define EV_NSIG (SIGMAX+1) |
|
|
202 | #elif defined (SIG_MAX) |
|
|
203 | # define EV_NSIG (SIG_MAX+1) |
|
|
204 | #elif defined (_SIG_MAX) |
|
|
205 | # define EV_NSIG (_SIG_MAX+1) |
|
|
206 | #elif defined (MAXSIG) |
|
|
207 | # define EV_NSIG (MAXSIG+1) |
|
|
208 | #elif defined (MAX_SIG) |
|
|
209 | # define EV_NSIG (MAX_SIG+1) |
|
|
210 | #elif defined (SIGARRAYSIZE) |
|
|
211 | # define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */ |
|
|
212 | #elif defined (_sys_nsig) |
|
|
213 | # define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ |
|
|
214 | #else |
|
|
215 | # error "unable to find value for NSIG, please report" |
|
|
216 | /* to make it compile regardless, just remove the above line */ |
|
|
217 | # define EV_NSIG 65 |
|
|
218 | #endif |
|
|
219 | |
191 | #ifndef EV_USE_CLOCK_SYSCALL |
220 | #ifndef EV_USE_CLOCK_SYSCALL |
192 | # if __linux && __GLIBC__ >= 2 |
221 | # if __linux && __GLIBC__ >= 2 |
193 | # define EV_USE_CLOCK_SYSCALL 1 |
222 | # define EV_USE_CLOCK_SYSCALL 1 |
194 | # else |
223 | # else |
195 | # define EV_USE_CLOCK_SYSCALL 0 |
224 | # define EV_USE_CLOCK_SYSCALL 0 |
… | |
… | |
275 | # define EV_USE_EVENTFD 0 |
304 | # define EV_USE_EVENTFD 0 |
276 | # endif |
305 | # endif |
277 | #endif |
306 | #endif |
278 | |
307 | |
279 | #ifndef EV_USE_SIGNALFD |
308 | #ifndef EV_USE_SIGNALFD |
280 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 9)) |
309 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) |
281 | # define EV_USE_SIGNALFD 1 |
310 | # define EV_USE_SIGNALFD 1 |
282 | # else |
311 | # else |
283 | # define EV_USE_SIGNALFD 0 |
312 | # define EV_USE_SIGNALFD 0 |
284 | # endif |
313 | # endif |
285 | #endif |
314 | #endif |
… | |
… | |
316 | # endif |
345 | # endif |
317 | #endif |
346 | #endif |
318 | |
347 | |
319 | /* 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 */ |
320 | |
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 | |
321 | #ifndef CLOCK_MONOTONIC |
356 | #ifndef CLOCK_MONOTONIC |
322 | # undef EV_USE_MONOTONIC |
357 | # undef EV_USE_MONOTONIC |
323 | # define EV_USE_MONOTONIC 0 |
358 | # define EV_USE_MONOTONIC 0 |
324 | #endif |
359 | #endif |
325 | |
360 | |
… | |
… | |
359 | # include <stdint.h> |
394 | # include <stdint.h> |
360 | # ifndef EFD_NONBLOCK |
395 | # ifndef EFD_NONBLOCK |
361 | # define EFD_NONBLOCK O_NONBLOCK |
396 | # define EFD_NONBLOCK O_NONBLOCK |
362 | # endif |
397 | # endif |
363 | # ifndef EFD_CLOEXEC |
398 | # ifndef EFD_CLOEXEC |
|
|
399 | # ifdef O_CLOEXEC |
364 | # define EFD_CLOEXEC O_CLOEXEC |
400 | # define EFD_CLOEXEC O_CLOEXEC |
|
|
401 | # else |
|
|
402 | # define EFD_CLOEXEC 02000000 |
|
|
403 | # endif |
365 | # endif |
404 | # endif |
366 | # ifdef __cplusplus |
405 | # ifdef __cplusplus |
367 | extern "C" { |
406 | extern "C" { |
368 | # endif |
407 | # endif |
369 | int eventfd (unsigned int initval, int flags); |
408 | int eventfd (unsigned int initval, int flags); |
… | |
… | |
371 | } |
410 | } |
372 | # endif |
411 | # endif |
373 | #endif |
412 | #endif |
374 | |
413 | |
375 | #if EV_USE_SIGNALFD |
414 | #if EV_USE_SIGNALFD |
376 | # 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 |
377 | #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 |
|
|
428 | extern "C" { |
|
|
429 | # endif |
|
|
430 | int signalfd (int fd, const sigset_t *mask, int flags); |
|
|
431 | |
|
|
432 | struct 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 | |
378 | |
442 | |
379 | /**/ |
443 | /**/ |
380 | |
444 | |
381 | #if EV_VERIFY >= 3 |
445 | #if EV_VERIFY >= 3 |
382 | # define EV_FREQUENT_CHECK ev_loop_verify (EV_A) |
446 | # define EV_FREQUENT_CHECK ev_loop_verify (EV_A) |
… | |
… | |
394 | */ |
458 | */ |
395 | #define TIME_EPSILON 0.0001220703125 /* 1/8192 */ |
459 | #define TIME_EPSILON 0.0001220703125 /* 1/8192 */ |
396 | |
460 | |
397 | #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) */ |
398 | #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) */ |
399 | /*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */ |
|
|
400 | |
463 | |
401 | #if __GNUC__ >= 4 |
464 | #if __GNUC__ >= 4 |
402 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
465 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
403 | # define noinline __attribute__ ((noinline)) |
466 | # define noinline __attribute__ ((noinline)) |
404 | #else |
467 | #else |
… | |
… | |
443 | static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ |
506 | static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ |
444 | #endif |
507 | #endif |
445 | |
508 | |
446 | #if EV_USE_MONOTONIC |
509 | #if EV_USE_MONOTONIC |
447 | static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
510 | static 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) |
448 | #endif |
521 | #endif |
449 | |
522 | |
450 | #ifdef _WIN32 |
523 | #ifdef _WIN32 |
451 | # include "ev_win32.c" |
524 | # include "ev_win32.c" |
452 | #endif |
525 | #endif |
… | |
… | |
845 | |
918 | |
846 | #if EV_SELECT_IS_WINSOCKET |
919 | #if EV_SELECT_IS_WINSOCKET |
847 | if (events) |
920 | if (events) |
848 | { |
921 | { |
849 | unsigned long arg; |
922 | unsigned long arg; |
850 | #ifdef EV_FD_TO_WIN32_HANDLE |
|
|
851 | anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); |
923 | anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); |
852 | #else |
|
|
853 | anfd->handle = _get_osfhandle (fd); |
|
|
854 | #endif |
|
|
855 | 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)); |
856 | } |
925 | } |
857 | #endif |
926 | #endif |
858 | |
927 | |
859 | { |
928 | { |
… | |
… | |
902 | /* check whether the given fd is atcually valid, for error recovery */ |
971 | /* check whether the given fd is atcually valid, for error recovery */ |
903 | inline_size int |
972 | inline_size int |
904 | fd_valid (int fd) |
973 | fd_valid (int fd) |
905 | { |
974 | { |
906 | #ifdef _WIN32 |
975 | #ifdef _WIN32 |
907 | return _get_osfhandle (fd) != -1; |
976 | return EV_FD_TO_WIN32_HANDLE (fd) != -1; |
908 | #else |
977 | #else |
909 | return fcntl (fd, F_GETFD) != -1; |
978 | return fcntl (fd, F_GETFD) != -1; |
910 | #endif |
979 | #endif |
911 | } |
980 | } |
912 | |
981 | |
… | |
… | |
930 | |
999 | |
931 | for (fd = anfdmax; fd--; ) |
1000 | for (fd = anfdmax; fd--; ) |
932 | if (anfds [fd].events) |
1001 | if (anfds [fd].events) |
933 | { |
1002 | { |
934 | fd_kill (EV_A_ fd); |
1003 | fd_kill (EV_A_ fd); |
935 | return; |
1004 | break; |
936 | } |
1005 | } |
937 | } |
1006 | } |
938 | |
1007 | |
939 | /* 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 */ |
940 | static void noinline |
1009 | static void noinline |
… | |
… | |
1030 | |
1099 | |
1031 | for (;;) |
1100 | for (;;) |
1032 | { |
1101 | { |
1033 | int c = k << 1; |
1102 | int c = k << 1; |
1034 | |
1103 | |
1035 | if (c > N + HEAP0 - 1) |
1104 | if (c >= N + HEAP0) |
1036 | break; |
1105 | break; |
1037 | |
1106 | |
1038 | 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]) |
1039 | ? 1 : 0; |
1108 | ? 1 : 0; |
1040 | |
1109 | |
… | |
… | |
1076 | |
1145 | |
1077 | /* move an element suitably so it is in a correct place */ |
1146 | /* move an element suitably so it is in a correct place */ |
1078 | inline_size void |
1147 | inline_size void |
1079 | adjustheap (ANHE *heap, int N, int k) |
1148 | adjustheap (ANHE *heap, int N, int k) |
1080 | { |
1149 | { |
1081 | 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)])) |
1082 | upheap (heap, k); |
1151 | upheap (heap, k); |
1083 | else |
1152 | else |
1084 | downheap (heap, N, k); |
1153 | downheap (heap, N, k); |
1085 | } |
1154 | } |
1086 | |
1155 | |
… | |
… | |
1099 | /*****************************************************************************/ |
1168 | /*****************************************************************************/ |
1100 | |
1169 | |
1101 | /* associate signal watchers to a signal signal */ |
1170 | /* associate signal watchers to a signal signal */ |
1102 | typedef struct |
1171 | typedef struct |
1103 | { |
1172 | { |
|
|
1173 | EV_ATOMIC_T pending; |
|
|
1174 | #if EV_MULTIPLICITY |
|
|
1175 | EV_P; |
|
|
1176 | #endif |
1104 | WL head; |
1177 | WL head; |
1105 | EV_ATOMIC_T gotsig; |
|
|
1106 | } ANSIG; |
1178 | } ANSIG; |
1107 | |
1179 | |
1108 | static ANSIG *signals; |
1180 | static ANSIG signals [EV_NSIG - 1]; |
1109 | static int signalmax; |
|
|
1110 | |
|
|
1111 | static EV_ATOMIC_T gotsig; |
|
|
1112 | |
1181 | |
1113 | /*****************************************************************************/ |
1182 | /*****************************************************************************/ |
1114 | |
1183 | |
1115 | /* used to prepare libev internal fd's */ |
1184 | /* used to prepare libev internal fd's */ |
1116 | /* this is not fork-safe */ |
1185 | /* this is not fork-safe */ |
1117 | inline_speed void |
1186 | inline_speed void |
1118 | fd_intern (int fd) |
1187 | fd_intern (int fd) |
1119 | { |
1188 | { |
1120 | #ifdef _WIN32 |
1189 | #ifdef _WIN32 |
1121 | unsigned long arg = 1; |
1190 | unsigned long arg = 1; |
1122 | ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); |
1191 | ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg); |
1123 | #else |
1192 | #else |
1124 | fcntl (fd, F_SETFD, FD_CLOEXEC); |
1193 | fcntl (fd, F_SETFD, FD_CLOEXEC); |
1125 | fcntl (fd, F_SETFL, O_NONBLOCK); |
1194 | fcntl (fd, F_SETFL, O_NONBLOCK); |
1126 | #endif |
1195 | #endif |
1127 | } |
1196 | } |
… | |
… | |
1184 | /* called whenever the libev signal pipe */ |
1253 | /* called whenever the libev signal pipe */ |
1185 | /* got some events (signal, async) */ |
1254 | /* got some events (signal, async) */ |
1186 | static void |
1255 | static void |
1187 | pipecb (EV_P_ ev_io *iow, int revents) |
1256 | pipecb (EV_P_ ev_io *iow, int revents) |
1188 | { |
1257 | { |
|
|
1258 | int i; |
|
|
1259 | |
1189 | #if EV_USE_EVENTFD |
1260 | #if EV_USE_EVENTFD |
1190 | if (evfd >= 0) |
1261 | if (evfd >= 0) |
1191 | { |
1262 | { |
1192 | uint64_t counter; |
1263 | uint64_t counter; |
1193 | read (evfd, &counter, sizeof (uint64_t)); |
1264 | read (evfd, &counter, sizeof (uint64_t)); |
… | |
… | |
1197 | { |
1268 | { |
1198 | char dummy; |
1269 | char dummy; |
1199 | read (evpipe [0], &dummy, 1); |
1270 | read (evpipe [0], &dummy, 1); |
1200 | } |
1271 | } |
1201 | |
1272 | |
1202 | if (gotsig && ev_is_default_loop (EV_A)) |
1273 | if (sig_pending) |
1203 | { |
1274 | { |
1204 | int signum; |
1275 | sig_pending = 0; |
1205 | gotsig = 0; |
|
|
1206 | |
1276 | |
1207 | for (signum = signalmax; signum--; ) |
1277 | for (i = EV_NSIG - 1; i--; ) |
1208 | if (signals [signum].gotsig) |
1278 | if (expect_false (signals [i].pending)) |
1209 | ev_feed_signal_event (EV_A_ signum + 1); |
1279 | ev_feed_signal_event (EV_A_ i + 1); |
1210 | } |
1280 | } |
1211 | |
1281 | |
1212 | #if EV_ASYNC_ENABLE |
1282 | #if EV_ASYNC_ENABLE |
1213 | if (gotasync) |
1283 | if (async_pending) |
1214 | { |
1284 | { |
1215 | int i; |
1285 | async_pending = 0; |
1216 | gotasync = 0; |
|
|
1217 | |
1286 | |
1218 | for (i = asynccnt; i--; ) |
1287 | for (i = asynccnt; i--; ) |
1219 | if (asyncs [i]->sent) |
1288 | if (asyncs [i]->sent) |
1220 | { |
1289 | { |
1221 | asyncs [i]->sent = 0; |
1290 | asyncs [i]->sent = 0; |
… | |
… | |
1229 | |
1298 | |
1230 | static void |
1299 | static void |
1231 | ev_sighandler (int signum) |
1300 | ev_sighandler (int signum) |
1232 | { |
1301 | { |
1233 | #if EV_MULTIPLICITY |
1302 | #if EV_MULTIPLICITY |
1234 | struct ev_loop *loop = &default_loop_struct; |
1303 | EV_P = signals [signum - 1].loop; |
1235 | #endif |
1304 | #endif |
1236 | |
1305 | |
1237 | #if _WIN32 |
1306 | #ifdef _WIN32 |
1238 | signal (signum, ev_sighandler); |
1307 | signal (signum, ev_sighandler); |
1239 | #endif |
1308 | #endif |
1240 | |
1309 | |
1241 | signals [signum - 1].gotsig = 1; |
1310 | signals [signum - 1].pending = 1; |
1242 | evpipe_write (EV_A_ &gotsig); |
1311 | evpipe_write (EV_A_ &sig_pending); |
1243 | } |
1312 | } |
1244 | |
1313 | |
1245 | void noinline |
1314 | void noinline |
1246 | ev_feed_signal_event (EV_P_ int signum) |
1315 | ev_feed_signal_event (EV_P_ int signum) |
1247 | { |
1316 | { |
1248 | WL w; |
1317 | WL w; |
1249 | |
1318 | |
|
|
1319 | if (expect_false (signum <= 0 || signum > EV_NSIG)) |
|
|
1320 | return; |
|
|
1321 | |
|
|
1322 | --signum; |
|
|
1323 | |
1250 | #if EV_MULTIPLICITY |
1324 | #if EV_MULTIPLICITY |
1251 | 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 */ |
1252 | #endif |
1326 | /* or, likely more useful, feeding a signal nobody is waiting for */ |
1253 | |
1327 | |
1254 | --signum; |
1328 | if (expect_false (signals [signum].loop != EV_A)) |
1255 | |
|
|
1256 | if (signum < 0 || signum >= signalmax) |
|
|
1257 | return; |
1329 | return; |
|
|
1330 | #endif |
1258 | |
1331 | |
1259 | signals [signum].gotsig = 0; |
1332 | signals [signum].pending = 0; |
1260 | |
1333 | |
1261 | for (w = signals [signum].head; w; w = w->next) |
1334 | for (w = signals [signum].head; w; w = w->next) |
1262 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
1335 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
1263 | } |
1336 | } |
1264 | |
1337 | |
1265 | #if EV_USE_SIGNALFD |
1338 | #if EV_USE_SIGNALFD |
1266 | static void |
1339 | static void |
1267 | sigfdcb (EV_P_ ev_io *iow, int revents) |
1340 | sigfdcb (EV_P_ ev_io *iow, int revents) |
1268 | { |
1341 | { |
1269 | struct signalfd_siginfo si[4], *sip; |
1342 | struct signalfd_siginfo si[2], *sip; /* these structs are big */ |
1270 | |
1343 | |
1271 | for (;;) |
1344 | for (;;) |
1272 | { |
1345 | { |
1273 | ssize_t res = read (sigfd, si, sizeof (si)); |
1346 | ssize_t res = read (sigfd, si, sizeof (si)); |
1274 | |
1347 | |
… | |
… | |
1508 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
1581 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
1509 | have_monotonic = 1; |
1582 | have_monotonic = 1; |
1510 | } |
1583 | } |
1511 | #endif |
1584 | #endif |
1512 | |
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 | |
1513 | ev_rt_now = ev_time (); |
1597 | ev_rt_now = ev_time (); |
1514 | mn_now = get_clock (); |
1598 | mn_now = get_clock (); |
1515 | now_floor = mn_now; |
1599 | now_floor = mn_now; |
1516 | rtmn_diff = ev_rt_now - mn_now; |
1600 | rtmn_diff = ev_rt_now - mn_now; |
1517 | #if EV_MINIMAL < 2 |
1601 | #if EV_MINIMAL < 2 |
… | |
… | |
1520 | |
1604 | |
1521 | io_blocktime = 0.; |
1605 | io_blocktime = 0.; |
1522 | timeout_blocktime = 0.; |
1606 | timeout_blocktime = 0.; |
1523 | backend = 0; |
1607 | backend = 0; |
1524 | backend_fd = -1; |
1608 | backend_fd = -1; |
1525 | gotasync = 0; |
1609 | sig_pending = 0; |
|
|
1610 | #if EV_ASYNC_ENABLE |
|
|
1611 | async_pending = 0; |
|
|
1612 | #endif |
1526 | #if EV_USE_INOTIFY |
1613 | #if EV_USE_INOTIFY |
1527 | fs_fd = -2; |
1614 | fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; |
1528 | #endif |
1615 | #endif |
1529 | #if EV_USE_SIGNALFD |
1616 | #if EV_USE_SIGNALFD |
1530 | sigfd = -2; |
1617 | sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; |
1531 | #endif |
1618 | #endif |
1532 | |
|
|
1533 | /* pid check not overridable via env */ |
|
|
1534 | #ifndef _WIN32 |
|
|
1535 | if (flags & EVFLAG_FORKCHECK) |
|
|
1536 | curpid = getpid (); |
|
|
1537 | #endif |
|
|
1538 | |
|
|
1539 | if (!(flags & EVFLAG_NOENV) |
|
|
1540 | && !enable_secure () |
|
|
1541 | && getenv ("LIBEV_FLAGS")) |
|
|
1542 | flags = atoi (getenv ("LIBEV_FLAGS")); |
|
|
1543 | |
1619 | |
1544 | if (!(flags & 0x0000ffffU)) |
1620 | if (!(flags & 0x0000ffffU)) |
1545 | flags |= ev_recommended_backends (); |
1621 | flags |= ev_recommended_backends (); |
1546 | |
1622 | |
1547 | #if EV_USE_PORT |
1623 | #if EV_USE_PORT |
… | |
… | |
1583 | close (evfd); |
1659 | close (evfd); |
1584 | #endif |
1660 | #endif |
1585 | |
1661 | |
1586 | if (evpipe [0] >= 0) |
1662 | if (evpipe [0] >= 0) |
1587 | { |
1663 | { |
1588 | close (evpipe [0]); |
1664 | EV_WIN32_CLOSE_FD (evpipe [0]); |
1589 | close (evpipe [1]); |
1665 | EV_WIN32_CLOSE_FD (evpipe [1]); |
1590 | } |
1666 | } |
1591 | } |
1667 | } |
1592 | |
1668 | |
1593 | #if EV_USE_SIGNALFD |
1669 | #if EV_USE_SIGNALFD |
1594 | if (ev_is_active (&sigfd_w)) |
1670 | if (ev_is_active (&sigfd_w)) |
1595 | { |
|
|
1596 | /*ev_ref (EV_A);*/ |
|
|
1597 | /*ev_io_stop (EV_A_ &sigfd_w);*/ |
|
|
1598 | |
|
|
1599 | close (sigfd); |
1671 | close (sigfd); |
1600 | } |
|
|
1601 | #endif |
1672 | #endif |
1602 | |
1673 | |
1603 | #if EV_USE_INOTIFY |
1674 | #if EV_USE_INOTIFY |
1604 | if (fs_fd >= 0) |
1675 | if (fs_fd >= 0) |
1605 | close (fs_fd); |
1676 | close (fs_fd); |
… | |
… | |
1630 | #if EV_IDLE_ENABLE |
1701 | #if EV_IDLE_ENABLE |
1631 | array_free (idle, [i]); |
1702 | array_free (idle, [i]); |
1632 | #endif |
1703 | #endif |
1633 | } |
1704 | } |
1634 | |
1705 | |
1635 | ev_free (anfds); anfdmax = 0; |
1706 | ev_free (anfds); anfds = 0; anfdmax = 0; |
1636 | |
1707 | |
1637 | /* have to use the microsoft-never-gets-it-right macro */ |
1708 | /* have to use the microsoft-never-gets-it-right macro */ |
1638 | array_free (rfeed, EMPTY); |
1709 | array_free (rfeed, EMPTY); |
1639 | array_free (fdchange, EMPTY); |
1710 | array_free (fdchange, EMPTY); |
1640 | array_free (timer, EMPTY); |
1711 | array_free (timer, EMPTY); |
… | |
… | |
1675 | |
1746 | |
1676 | if (ev_is_active (&pipe_w)) |
1747 | if (ev_is_active (&pipe_w)) |
1677 | { |
1748 | { |
1678 | /* this "locks" the handlers against writing to the pipe */ |
1749 | /* this "locks" the handlers against writing to the pipe */ |
1679 | /* while we modify the fd vars */ |
1750 | /* while we modify the fd vars */ |
1680 | gotsig = 1; |
1751 | sig_pending = 1; |
1681 | #if EV_ASYNC_ENABLE |
1752 | #if EV_ASYNC_ENABLE |
1682 | gotasync = 1; |
1753 | async_pending = 1; |
1683 | #endif |
1754 | #endif |
1684 | |
1755 | |
1685 | ev_ref (EV_A); |
1756 | ev_ref (EV_A); |
1686 | ev_io_stop (EV_A_ &pipe_w); |
1757 | ev_io_stop (EV_A_ &pipe_w); |
1687 | |
1758 | |
… | |
… | |
1690 | close (evfd); |
1761 | close (evfd); |
1691 | #endif |
1762 | #endif |
1692 | |
1763 | |
1693 | if (evpipe [0] >= 0) |
1764 | if (evpipe [0] >= 0) |
1694 | { |
1765 | { |
1695 | close (evpipe [0]); |
1766 | EV_WIN32_CLOSE_FD (evpipe [0]); |
1696 | close (evpipe [1]); |
1767 | EV_WIN32_CLOSE_FD (evpipe [1]); |
1697 | } |
1768 | } |
1698 | |
1769 | |
1699 | evpipe_init (EV_A); |
1770 | evpipe_init (EV_A); |
1700 | /* now iterate over everything, in case we missed something */ |
1771 | /* now iterate over everything, in case we missed something */ |
1701 | pipecb (EV_A_ &pipe_w, EV_READ); |
1772 | pipecb (EV_A_ &pipe_w, EV_READ); |
… | |
… | |
1707 | #if EV_MULTIPLICITY |
1778 | #if EV_MULTIPLICITY |
1708 | |
1779 | |
1709 | struct ev_loop * |
1780 | struct ev_loop * |
1710 | ev_loop_new (unsigned int flags) |
1781 | ev_loop_new (unsigned int flags) |
1711 | { |
1782 | { |
1712 | 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)); |
1713 | |
1784 | |
1714 | memset (loop, 0, sizeof (struct ev_loop)); |
1785 | memset (EV_A, 0, sizeof (struct ev_loop)); |
1715 | loop_init (EV_A_ flags); |
1786 | loop_init (EV_A_ flags); |
1716 | |
1787 | |
1717 | if (ev_backend (EV_A)) |
1788 | if (ev_backend (EV_A)) |
1718 | return loop; |
1789 | return EV_A; |
1719 | |
1790 | |
1720 | return 0; |
1791 | return 0; |
1721 | } |
1792 | } |
1722 | |
1793 | |
1723 | void |
1794 | void |
… | |
… | |
1827 | assert (checkmax >= checkcnt); |
1898 | assert (checkmax >= checkcnt); |
1828 | array_verify (EV_A_ (W *)checks, checkcnt); |
1899 | array_verify (EV_A_ (W *)checks, checkcnt); |
1829 | |
1900 | |
1830 | # if 0 |
1901 | # if 0 |
1831 | 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) |
1832 | for (signum = signalmax; signum--; ) if (signals [signum].gotsig) |
1903 | for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) |
1833 | # endif |
1904 | # endif |
1834 | #endif |
1905 | #endif |
1835 | } |
1906 | } |
1836 | #endif |
1907 | #endif |
1837 | |
1908 | |
… | |
… | |
1844 | #endif |
1915 | #endif |
1845 | { |
1916 | { |
1846 | if (!ev_default_loop_ptr) |
1917 | if (!ev_default_loop_ptr) |
1847 | { |
1918 | { |
1848 | #if EV_MULTIPLICITY |
1919 | #if EV_MULTIPLICITY |
1849 | struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; |
1920 | EV_P = ev_default_loop_ptr = &default_loop_struct; |
1850 | #else |
1921 | #else |
1851 | ev_default_loop_ptr = 1; |
1922 | ev_default_loop_ptr = 1; |
1852 | #endif |
1923 | #endif |
1853 | |
1924 | |
1854 | loop_init (EV_A_ flags); |
1925 | loop_init (EV_A_ flags); |
… | |
… | |
1871 | |
1942 | |
1872 | void |
1943 | void |
1873 | ev_default_destroy (void) |
1944 | ev_default_destroy (void) |
1874 | { |
1945 | { |
1875 | #if EV_MULTIPLICITY |
1946 | #if EV_MULTIPLICITY |
1876 | struct ev_loop *loop = ev_default_loop_ptr; |
1947 | EV_P = ev_default_loop_ptr; |
1877 | #endif |
1948 | #endif |
1878 | |
1949 | |
1879 | ev_default_loop_ptr = 0; |
1950 | ev_default_loop_ptr = 0; |
1880 | |
1951 | |
1881 | #ifndef _WIN32 |
1952 | #ifndef _WIN32 |
… | |
… | |
1888 | |
1959 | |
1889 | void |
1960 | void |
1890 | ev_default_fork (void) |
1961 | ev_default_fork (void) |
1891 | { |
1962 | { |
1892 | #if EV_MULTIPLICITY |
1963 | #if EV_MULTIPLICITY |
1893 | struct ev_loop *loop = ev_default_loop_ptr; |
1964 | EV_P = ev_default_loop_ptr; |
1894 | #endif |
1965 | #endif |
1895 | |
1966 | |
1896 | postfork = 1; /* must be in line with ev_loop_fork */ |
1967 | postfork = 1; /* must be in line with ev_loop_fork */ |
1897 | } |
1968 | } |
1898 | |
1969 | |
… | |
… | |
2093 | ANHE_at_cache (*he); |
2164 | ANHE_at_cache (*he); |
2094 | } |
2165 | } |
2095 | } |
2166 | } |
2096 | |
2167 | |
2097 | /* fetch new monotonic and realtime times from the kernel */ |
2168 | /* fetch new monotonic and realtime times from the kernel */ |
2098 | /* also detetc if there was a timejump, and act accordingly */ |
2169 | /* also detect if there was a timejump, and act accordingly */ |
2099 | inline_speed void |
2170 | inline_speed void |
2100 | time_update (EV_P_ ev_tstamp max_block) |
2171 | time_update (EV_P_ ev_tstamp max_block) |
2101 | { |
2172 | { |
2102 | #if EV_USE_MONOTONIC |
2173 | #if EV_USE_MONOTONIC |
2103 | if (expect_true (have_monotonic)) |
2174 | if (expect_true (have_monotonic)) |
… | |
… | |
2364 | inline_size void |
2435 | inline_size void |
2365 | wlist_del (WL *head, WL elem) |
2436 | wlist_del (WL *head, WL elem) |
2366 | { |
2437 | { |
2367 | while (*head) |
2438 | while (*head) |
2368 | { |
2439 | { |
2369 | if (*head == elem) |
2440 | if (expect_true (*head == elem)) |
2370 | { |
2441 | { |
2371 | *head = elem->next; |
2442 | *head = elem->next; |
2372 | return; |
2443 | break; |
2373 | } |
2444 | } |
2374 | |
2445 | |
2375 | head = &(*head)->next; |
2446 | head = &(*head)->next; |
2376 | } |
2447 | } |
2377 | } |
2448 | } |
… | |
… | |
2437 | |
2508 | |
2438 | if (expect_false (ev_is_active (w))) |
2509 | if (expect_false (ev_is_active (w))) |
2439 | return; |
2510 | return; |
2440 | |
2511 | |
2441 | assert (("libev: ev_io_start called with negative fd", fd >= 0)); |
2512 | assert (("libev: ev_io_start called with negative fd", fd >= 0)); |
2442 | 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)))); |
2443 | |
2514 | |
2444 | EV_FREQUENT_CHECK; |
2515 | EV_FREQUENT_CHECK; |
2445 | |
2516 | |
2446 | ev_start (EV_A_ (W)w, 1); |
2517 | ev_start (EV_A_ (W)w, 1); |
2447 | array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); |
2518 | array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); |
… | |
… | |
2631 | #endif |
2702 | #endif |
2632 | |
2703 | |
2633 | void noinline |
2704 | void noinline |
2634 | ev_signal_start (EV_P_ ev_signal *w) |
2705 | ev_signal_start (EV_P_ ev_signal *w) |
2635 | { |
2706 | { |
2636 | #if EV_MULTIPLICITY |
|
|
2637 | assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
2638 | #endif |
|
|
2639 | if (expect_false (ev_is_active (w))) |
2707 | if (expect_false (ev_is_active (w))) |
2640 | return; |
2708 | return; |
2641 | |
2709 | |
2642 | 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 |
2643 | |
2718 | |
2644 | EV_FREQUENT_CHECK; |
2719 | EV_FREQUENT_CHECK; |
2645 | |
2720 | |
2646 | #if EV_USE_SIGNALFD |
2721 | #if EV_USE_SIGNALFD |
2647 | if (sigfd == -2) |
2722 | if (sigfd == -2) |
… | |
… | |
2669 | sigaddset (&sigfd_set, w->signum); |
2744 | sigaddset (&sigfd_set, w->signum); |
2670 | sigprocmask (SIG_BLOCK, &sigfd_set, 0); |
2745 | sigprocmask (SIG_BLOCK, &sigfd_set, 0); |
2671 | |
2746 | |
2672 | signalfd (sigfd, &sigfd_set, 0); |
2747 | signalfd (sigfd, &sigfd_set, 0); |
2673 | } |
2748 | } |
2674 | else |
|
|
2675 | #endif |
|
|
2676 | evpipe_init (EV_A); |
|
|
2677 | |
|
|
2678 | { |
|
|
2679 | #ifndef _WIN32 |
|
|
2680 | sigset_t full, prev; |
|
|
2681 | sigfillset (&full); |
|
|
2682 | sigprocmask (SIG_SETMASK, &full, &prev); |
|
|
2683 | #endif |
|
|
2684 | |
|
|
2685 | array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); |
|
|
2686 | |
|
|
2687 | #ifndef _WIN32 |
|
|
2688 | # if EV_USE_SIGNALFD |
|
|
2689 | if (sigfd < 0)/*TODO*/ |
|
|
2690 | # endif |
2749 | #endif |
2691 | sigdelset (&prev, w->signum); |
|
|
2692 | sigprocmask (SIG_SETMASK, &prev, 0); |
|
|
2693 | #endif |
|
|
2694 | } |
|
|
2695 | |
2750 | |
2696 | ev_start (EV_A_ (W)w, 1); |
2751 | ev_start (EV_A_ (W)w, 1); |
2697 | wlist_add (&signals [w->signum - 1].head, (WL)w); |
2752 | wlist_add (&signals [w->signum - 1].head, (WL)w); |
2698 | |
2753 | |
2699 | if (!((WL)w)->next) |
2754 | if (!((WL)w)->next) |
2700 | { |
|
|
2701 | #if _WIN32 |
|
|
2702 | signal (w->signum, ev_sighandler); |
|
|
2703 | #else |
|
|
2704 | # if EV_USE_SIGNALFD |
2755 | # if EV_USE_SIGNALFD |
2705 | if (sigfd < 0) /*TODO*/ |
2756 | if (sigfd < 0) /*TODO*/ |
2706 | # endif |
2757 | # endif |
2707 | { |
2758 | { |
|
|
2759 | # ifdef _WIN32 |
|
|
2760 | evpipe_init (EV_A); |
|
|
2761 | |
|
|
2762 | signal (w->signum, ev_sighandler); |
|
|
2763 | # else |
2708 | struct sigaction sa = { }; |
2764 | struct sigaction sa; |
|
|
2765 | |
|
|
2766 | evpipe_init (EV_A); |
|
|
2767 | |
2709 | sa.sa_handler = ev_sighandler; |
2768 | sa.sa_handler = ev_sighandler; |
2710 | sigfillset (&sa.sa_mask); |
2769 | sigfillset (&sa.sa_mask); |
2711 | 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 */ |
2712 | 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 |
2713 | } |
2777 | } |
2714 | #endif |
|
|
2715 | } |
|
|
2716 | |
2778 | |
2717 | EV_FREQUENT_CHECK; |
2779 | EV_FREQUENT_CHECK; |
2718 | } |
2780 | } |
2719 | |
2781 | |
2720 | void noinline |
2782 | void noinline |
… | |
… | |
2728 | |
2790 | |
2729 | wlist_del (&signals [w->signum - 1].head, (WL)w); |
2791 | wlist_del (&signals [w->signum - 1].head, (WL)w); |
2730 | ev_stop (EV_A_ (W)w); |
2792 | ev_stop (EV_A_ (W)w); |
2731 | |
2793 | |
2732 | 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 |
2733 | #if EV_USE_SIGNALFD |
2799 | #if EV_USE_SIGNALFD |
2734 | if (sigfd >= 0) |
2800 | if (sigfd >= 0) |
2735 | { |
2801 | { |
2736 | sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D |
2802 | sigset_t ss; |
|
|
2803 | |
|
|
2804 | sigemptyset (&ss); |
|
|
2805 | sigaddset (&ss, w->signum); |
2737 | sigdelset (&sigfd_set, w->signum); |
2806 | sigdelset (&sigfd_set, w->signum); |
|
|
2807 | |
2738 | signalfd (sigfd, &sigfd_set, 0); |
2808 | signalfd (sigfd, &sigfd_set, 0); |
2739 | sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D |
2809 | sigprocmask (SIG_UNBLOCK, &ss, 0); |
2740 | /*TODO: maybe unblock signal? */ |
|
|
2741 | } |
2810 | } |
2742 | else |
2811 | else |
2743 | #endif |
2812 | #endif |
2744 | signal (w->signum, SIG_DFL); |
2813 | signal (w->signum, SIG_DFL); |
|
|
2814 | } |
2745 | |
2815 | |
2746 | EV_FREQUENT_CHECK; |
2816 | EV_FREQUENT_CHECK; |
2747 | } |
2817 | } |
2748 | |
2818 | |
2749 | void |
2819 | void |
… | |
… | |
2790 | #define MIN_STAT_INTERVAL 0.1074891 |
2860 | #define MIN_STAT_INTERVAL 0.1074891 |
2791 | |
2861 | |
2792 | static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); |
2862 | static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); |
2793 | |
2863 | |
2794 | #if EV_USE_INOTIFY |
2864 | #if EV_USE_INOTIFY |
2795 | # 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) |
2796 | |
2868 | |
2797 | static void noinline |
2869 | static void noinline |
2798 | infy_add (EV_P_ ev_stat *w) |
2870 | infy_add (EV_P_ ev_stat *w) |
2799 | { |
2871 | { |
2800 | 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); |
2801 | |
2873 | |
2802 | 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 */ |
2803 | { |
2894 | } |
|
|
2895 | else |
|
|
2896 | { |
|
|
2897 | /* can't use inotify, continue to stat */ |
2804 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
2898 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
2805 | ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ |
|
|
2806 | |
2899 | |
2807 | /* monitor some parent directory for speedup hints */ |
2900 | /* if path is not there, monitor some parent directory for speedup hints */ |
2808 | /* 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, */ |
2809 | /* but an efficiency issue only */ |
2902 | /* but an efficiency issue only */ |
2810 | if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) |
2903 | if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) |
2811 | { |
2904 | { |
2812 | char path [4096]; |
2905 | char path [4096]; |
… | |
… | |
2828 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
2921 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
2829 | } |
2922 | } |
2830 | } |
2923 | } |
2831 | |
2924 | |
2832 | if (w->wd >= 0) |
2925 | if (w->wd >= 0) |
2833 | { |
|
|
2834 | 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); |
2835 | |
2927 | |
2836 | /* now local changes will be tracked by inotify, but remote changes won't */ |
2928 | /* now re-arm timer, if required */ |
2837 | /* unless the filesystem it known to be local, we therefore still poll */ |
2929 | if (ev_is_active (&w->timer)) ev_ref (EV_A); |
2838 | /* also do poll on <2.6.25, but with normal frequency */ |
|
|
2839 | struct statfs sfs; |
|
|
2840 | |
|
|
2841 | if (fs_2625 && !statfs (w->path, &sfs)) |
|
|
2842 | if (sfs.f_type == 0x1373 /* devfs */ |
|
|
2843 | || sfs.f_type == 0xEF53 /* ext2/3 */ |
|
|
2844 | || sfs.f_type == 0x3153464a /* jfs */ |
|
|
2845 | || sfs.f_type == 0x52654973 /* reiser3 */ |
|
|
2846 | || sfs.f_type == 0x01021994 /* tempfs */ |
|
|
2847 | || sfs.f_type == 0x58465342 /* xfs */) |
|
|
2848 | return; |
|
|
2849 | |
|
|
2850 | w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL; |
|
|
2851 | ev_timer_again (EV_A_ &w->timer); |
2930 | ev_timer_again (EV_A_ &w->timer); |
2852 | } |
2931 | if (ev_is_active (&w->timer)) ev_unref (EV_A); |
2853 | } |
2932 | } |
2854 | |
2933 | |
2855 | static void noinline |
2934 | static void noinline |
2856 | infy_del (EV_P_ ev_stat *w) |
2935 | infy_del (EV_P_ ev_stat *w) |
2857 | { |
2936 | { |
… | |
… | |
2902 | |
2981 | |
2903 | static void |
2982 | static void |
2904 | infy_cb (EV_P_ ev_io *w, int revents) |
2983 | infy_cb (EV_P_ ev_io *w, int revents) |
2905 | { |
2984 | { |
2906 | char buf [EV_INOTIFY_BUFSIZE]; |
2985 | char buf [EV_INOTIFY_BUFSIZE]; |
2907 | struct inotify_event *ev = (struct inotify_event *)buf; |
|
|
2908 | int ofs; |
2986 | int ofs; |
2909 | int len = read (fs_fd, buf, sizeof (buf)); |
2987 | int len = read (fs_fd, buf, sizeof (buf)); |
2910 | |
2988 | |
2911 | 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); |
2912 | 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 | } |
2913 | } |
2995 | } |
2914 | |
2996 | |
2915 | inline_size void |
2997 | inline_size void |
2916 | check_2625 (EV_P) |
2998 | check_2625 (EV_P) |
2917 | { |
2999 | { |
… | |
… | |
2933 | return; |
3015 | return; |
2934 | |
3016 | |
2935 | fs_2625 = 1; |
3017 | fs_2625 = 1; |
2936 | } |
3018 | } |
2937 | |
3019 | |
|
|
3020 | inline_size int |
|
|
3021 | infy_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 | |
2938 | inline_size void |
3031 | inline_size void |
2939 | infy_init (EV_P) |
3032 | infy_init (EV_P) |
2940 | { |
3033 | { |
2941 | if (fs_fd != -2) |
3034 | if (fs_fd != -2) |
2942 | return; |
3035 | return; |
2943 | |
3036 | |
2944 | fs_fd = -1; |
3037 | fs_fd = -1; |
2945 | |
3038 | |
2946 | check_2625 (EV_A); |
3039 | check_2625 (EV_A); |
2947 | |
3040 | |
2948 | fs_fd = inotify_init (); |
3041 | fs_fd = infy_newfd (); |
2949 | |
3042 | |
2950 | if (fs_fd >= 0) |
3043 | if (fs_fd >= 0) |
2951 | { |
3044 | { |
|
|
3045 | fd_intern (fs_fd); |
2952 | ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); |
3046 | ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); |
2953 | ev_set_priority (&fs_w, EV_MAXPRI); |
3047 | ev_set_priority (&fs_w, EV_MAXPRI); |
2954 | ev_io_start (EV_A_ &fs_w); |
3048 | ev_io_start (EV_A_ &fs_w); |
|
|
3049 | ev_unref (EV_A); |
2955 | } |
3050 | } |
2956 | } |
3051 | } |
2957 | |
3052 | |
2958 | inline_size void |
3053 | inline_size void |
2959 | infy_fork (EV_P) |
3054 | infy_fork (EV_P) |
… | |
… | |
2961 | int slot; |
3056 | int slot; |
2962 | |
3057 | |
2963 | if (fs_fd < 0) |
3058 | if (fs_fd < 0) |
2964 | return; |
3059 | return; |
2965 | |
3060 | |
|
|
3061 | ev_ref (EV_A); |
|
|
3062 | ev_io_stop (EV_A_ &fs_w); |
2966 | close (fs_fd); |
3063 | close (fs_fd); |
2967 | 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 | } |
2968 | |
3073 | |
2969 | for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) |
3074 | for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) |
2970 | { |
3075 | { |
2971 | WL w_ = fs_hash [slot].head; |
3076 | WL w_ = fs_hash [slot].head; |
2972 | fs_hash [slot].head = 0; |
3077 | fs_hash [slot].head = 0; |
… | |
… | |
2979 | w->wd = -1; |
3084 | w->wd = -1; |
2980 | |
3085 | |
2981 | if (fs_fd >= 0) |
3086 | if (fs_fd >= 0) |
2982 | infy_add (EV_A_ w); /* re-add, no matter what */ |
3087 | infy_add (EV_A_ w); /* re-add, no matter what */ |
2983 | 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); |
2984 | 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 | } |
2985 | } |
3095 | } |
2986 | } |
3096 | } |
2987 | } |
3097 | } |
2988 | |
3098 | |
2989 | #endif |
3099 | #endif |
… | |
… | |
3006 | static void noinline |
3116 | static void noinline |
3007 | stat_timer_cb (EV_P_ ev_timer *w_, int revents) |
3117 | stat_timer_cb (EV_P_ ev_timer *w_, int revents) |
3008 | { |
3118 | { |
3009 | ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); |
3119 | ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); |
3010 | |
3120 | |
3011 | /* we copy this here each the time so that */ |
3121 | ev_statdata prev = w->attr; |
3012 | /* prev has the old value when the callback gets invoked */ |
|
|
3013 | w->prev = w->attr; |
|
|
3014 | ev_stat_stat (EV_A_ w); |
3122 | ev_stat_stat (EV_A_ w); |
3015 | |
3123 | |
3016 | /* 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 */ |
3017 | if ( |
3125 | if ( |
3018 | w->prev.st_dev != w->attr.st_dev |
3126 | prev.st_dev != w->attr.st_dev |
3019 | || w->prev.st_ino != w->attr.st_ino |
3127 | || prev.st_ino != w->attr.st_ino |
3020 | || w->prev.st_mode != w->attr.st_mode |
3128 | || prev.st_mode != w->attr.st_mode |
3021 | || w->prev.st_nlink != w->attr.st_nlink |
3129 | || prev.st_nlink != w->attr.st_nlink |
3022 | || w->prev.st_uid != w->attr.st_uid |
3130 | || prev.st_uid != w->attr.st_uid |
3023 | || w->prev.st_gid != w->attr.st_gid |
3131 | || prev.st_gid != w->attr.st_gid |
3024 | || w->prev.st_rdev != w->attr.st_rdev |
3132 | || prev.st_rdev != w->attr.st_rdev |
3025 | || w->prev.st_size != w->attr.st_size |
3133 | || prev.st_size != w->attr.st_size |
3026 | || w->prev.st_atime != w->attr.st_atime |
3134 | || prev.st_atime != w->attr.st_atime |
3027 | || w->prev.st_mtime != w->attr.st_mtime |
3135 | || prev.st_mtime != w->attr.st_mtime |
3028 | || w->prev.st_ctime != w->attr.st_ctime |
3136 | || prev.st_ctime != w->attr.st_ctime |
3029 | ) { |
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 | |
3030 | #if EV_USE_INOTIFY |
3143 | #if EV_USE_INOTIFY |
3031 | if (fs_fd >= 0) |
3144 | if (fs_fd >= 0) |
3032 | { |
3145 | { |
3033 | infy_del (EV_A_ w); |
3146 | infy_del (EV_A_ w); |
3034 | infy_add (EV_A_ w); |
3147 | infy_add (EV_A_ w); |
… | |
… | |
3059 | |
3172 | |
3060 | if (fs_fd >= 0) |
3173 | if (fs_fd >= 0) |
3061 | infy_add (EV_A_ w); |
3174 | infy_add (EV_A_ w); |
3062 | else |
3175 | else |
3063 | #endif |
3176 | #endif |
|
|
3177 | { |
3064 | ev_timer_again (EV_A_ &w->timer); |
3178 | ev_timer_again (EV_A_ &w->timer); |
|
|
3179 | ev_unref (EV_A); |
|
|
3180 | } |
3065 | |
3181 | |
3066 | ev_start (EV_A_ (W)w, 1); |
3182 | ev_start (EV_A_ (W)w, 1); |
3067 | |
3183 | |
3068 | EV_FREQUENT_CHECK; |
3184 | EV_FREQUENT_CHECK; |
3069 | } |
3185 | } |
… | |
… | |
3078 | EV_FREQUENT_CHECK; |
3194 | EV_FREQUENT_CHECK; |
3079 | |
3195 | |
3080 | #if EV_USE_INOTIFY |
3196 | #if EV_USE_INOTIFY |
3081 | infy_del (EV_A_ w); |
3197 | infy_del (EV_A_ w); |
3082 | #endif |
3198 | #endif |
|
|
3199 | |
|
|
3200 | if (ev_is_active (&w->timer)) |
|
|
3201 | { |
|
|
3202 | ev_ref (EV_A); |
3083 | ev_timer_stop (EV_A_ &w->timer); |
3203 | ev_timer_stop (EV_A_ &w->timer); |
|
|
3204 | } |
3084 | |
3205 | |
3085 | ev_stop (EV_A_ (W)w); |
3206 | ev_stop (EV_A_ (W)w); |
3086 | |
3207 | |
3087 | EV_FREQUENT_CHECK; |
3208 | EV_FREQUENT_CHECK; |
3088 | } |
3209 | } |
… | |
… | |
3229 | embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) |
3350 | embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) |
3230 | { |
3351 | { |
3231 | ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); |
3352 | ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); |
3232 | |
3353 | |
3233 | { |
3354 | { |
3234 | struct ev_loop *loop = w->other; |
3355 | EV_P = w->other; |
3235 | |
3356 | |
3236 | while (fdchangecnt) |
3357 | while (fdchangecnt) |
3237 | { |
3358 | { |
3238 | fd_reify (EV_A); |
3359 | fd_reify (EV_A); |
3239 | ev_loop (EV_A_ EVLOOP_NONBLOCK); |
3360 | ev_loop (EV_A_ EVLOOP_NONBLOCK); |
… | |
… | |
3247 | 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)); |
3248 | |
3369 | |
3249 | ev_embed_stop (EV_A_ w); |
3370 | ev_embed_stop (EV_A_ w); |
3250 | |
3371 | |
3251 | { |
3372 | { |
3252 | struct ev_loop *loop = w->other; |
3373 | EV_P = w->other; |
3253 | |
3374 | |
3254 | ev_loop_fork (EV_A); |
3375 | ev_loop_fork (EV_A); |
3255 | ev_loop (EV_A_ EVLOOP_NONBLOCK); |
3376 | ev_loop (EV_A_ EVLOOP_NONBLOCK); |
3256 | } |
3377 | } |
3257 | |
3378 | |
… | |
… | |
3271 | { |
3392 | { |
3272 | if (expect_false (ev_is_active (w))) |
3393 | if (expect_false (ev_is_active (w))) |
3273 | return; |
3394 | return; |
3274 | |
3395 | |
3275 | { |
3396 | { |
3276 | struct ev_loop *loop = w->other; |
3397 | EV_P = w->other; |
3277 | 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 ())); |
3278 | 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); |
3279 | } |
3400 | } |
3280 | |
3401 | |
3281 | EV_FREQUENT_CHECK; |
3402 | EV_FREQUENT_CHECK; |
… | |
… | |
3393 | |
3514 | |
3394 | void |
3515 | void |
3395 | ev_async_send (EV_P_ ev_async *w) |
3516 | ev_async_send (EV_P_ ev_async *w) |
3396 | { |
3517 | { |
3397 | w->sent = 1; |
3518 | w->sent = 1; |
3398 | evpipe_write (EV_A_ &gotasync); |
3519 | evpipe_write (EV_A_ &async_pending); |
3399 | } |
3520 | } |
3400 | #endif |
3521 | #endif |
3401 | |
3522 | |
3402 | /*****************************************************************************/ |
3523 | /*****************************************************************************/ |
3403 | |
3524 | |
… | |
… | |
3552 | if (types & EV_CHECK) |
3673 | if (types & EV_CHECK) |
3553 | for (i = checkcnt; i--; ) |
3674 | for (i = checkcnt; i--; ) |
3554 | cb (EV_A_ EV_CHECK, checks [i]); |
3675 | cb (EV_A_ EV_CHECK, checks [i]); |
3555 | |
3676 | |
3556 | if (types & EV_SIGNAL) |
3677 | if (types & EV_SIGNAL) |
3557 | for (i = 0; i < signalmax; ++i) |
3678 | for (i = 0; i < EV_NSIG - 1; ++i) |
3558 | for (wl = signals [i].head; wl; ) |
3679 | for (wl = signals [i].head; wl; ) |
3559 | { |
3680 | { |
3560 | wn = wl->next; |
3681 | wn = wl->next; |
3561 | cb (EV_A_ EV_SIGNAL, wl); |
3682 | cb (EV_A_ EV_SIGNAL, wl); |
3562 | wl = wn; |
3683 | wl = wn; |