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 |
… | |
… | |
133 | # else |
133 | # else |
134 | # define EV_USE_INOTIFY 0 |
134 | # define EV_USE_INOTIFY 0 |
135 | # endif |
135 | # endif |
136 | # endif |
136 | # endif |
137 | |
137 | |
|
|
138 | # ifndef EV_USE_SIGNALFD |
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|
139 | # if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H |
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|
140 | # define EV_USE_SIGNALFD 1 |
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141 | # else |
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142 | # define EV_USE_SIGNALFD 0 |
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143 | # endif |
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144 | # endif |
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145 | |
138 | # ifndef EV_USE_EVENTFD |
146 | # ifndef EV_USE_EVENTFD |
139 | # if HAVE_EVENTFD |
147 | # if HAVE_EVENTFD |
140 | # define EV_USE_EVENTFD 1 |
148 | # define EV_USE_EVENTFD 1 |
141 | # else |
149 | # else |
142 | # define EV_USE_EVENTFD 0 |
150 | # define EV_USE_EVENTFD 0 |
… | |
… | |
145 | |
153 | |
146 | #endif |
154 | #endif |
147 | |
155 | |
148 | #include <math.h> |
156 | #include <math.h> |
149 | #include <stdlib.h> |
157 | #include <stdlib.h> |
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|
158 | #include <string.h> |
150 | #include <fcntl.h> |
159 | #include <fcntl.h> |
151 | #include <stddef.h> |
160 | #include <stddef.h> |
152 | |
161 | |
153 | #include <stdio.h> |
162 | #include <stdio.h> |
154 | |
163 | |
155 | #include <assert.h> |
164 | #include <assert.h> |
156 | #include <errno.h> |
165 | #include <errno.h> |
157 | #include <sys/types.h> |
166 | #include <sys/types.h> |
158 | #include <time.h> |
167 | #include <time.h> |
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|
168 | #include <limits.h> |
159 | |
169 | |
160 | #include <signal.h> |
170 | #include <signal.h> |
161 | |
171 | |
162 | #ifdef EV_H |
172 | #ifdef EV_H |
163 | # include EV_H |
173 | # include EV_H |
… | |
… | |
178 | # endif |
188 | # endif |
179 | #endif |
189 | #endif |
180 | |
190 | |
181 | /* 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 */ |
182 | |
192 | |
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193 | /* try to deduce the maximum number of signals on this platform */ |
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|
194 | #if defined (EV_NSIG) |
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|
195 | /* use what's provided */ |
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|
196 | #elif defined (NSIG) |
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197 | # define EV_NSIG (NSIG) |
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198 | #elif defined(_NSIG) |
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199 | # define EV_NSIG (_NSIG) |
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200 | #elif defined (SIGMAX) |
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201 | # define EV_NSIG (SIGMAX+1) |
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|
202 | #elif defined (SIG_MAX) |
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203 | # define EV_NSIG (SIG_MAX+1) |
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204 | #elif defined (_SIG_MAX) |
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205 | # define EV_NSIG (_SIG_MAX+1) |
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206 | #elif defined (MAXSIG) |
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207 | # define EV_NSIG (MAXSIG+1) |
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|
208 | #elif defined (MAX_SIG) |
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209 | # define EV_NSIG (MAX_SIG+1) |
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210 | #elif defined (SIGARRAYSIZE) |
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211 | # define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */ |
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212 | #elif defined (_sys_nsig) |
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213 | # define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ |
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214 | #else |
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215 | # error "unable to find value for NSIG, please report" |
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216 | /* to make it compile regardless, just remove the above line */ |
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217 | # define EV_NSIG 65 |
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|
218 | #endif |
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219 | |
183 | #ifndef EV_USE_CLOCK_SYSCALL |
220 | #ifndef EV_USE_CLOCK_SYSCALL |
184 | # if __linux && __GLIBC__ >= 2 |
221 | # if __linux && __GLIBC__ >= 2 |
185 | # define EV_USE_CLOCK_SYSCALL 1 |
222 | # define EV_USE_CLOCK_SYSCALL 1 |
186 | # else |
223 | # else |
187 | # define EV_USE_CLOCK_SYSCALL 0 |
224 | # define EV_USE_CLOCK_SYSCALL 0 |
… | |
… | |
263 | #ifndef EV_USE_EVENTFD |
300 | #ifndef EV_USE_EVENTFD |
264 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) |
301 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) |
265 | # define EV_USE_EVENTFD 1 |
302 | # define EV_USE_EVENTFD 1 |
266 | # else |
303 | # else |
267 | # define EV_USE_EVENTFD 0 |
304 | # define EV_USE_EVENTFD 0 |
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|
305 | # endif |
|
|
306 | #endif |
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307 | |
|
|
308 | #ifndef EV_USE_SIGNALFD |
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|
309 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) |
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310 | # define EV_USE_SIGNALFD 1 |
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311 | # else |
|
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312 | # define EV_USE_SIGNALFD 0 |
268 | # endif |
313 | # endif |
269 | #endif |
314 | #endif |
270 | |
315 | |
271 | #if 0 /* debugging */ |
316 | #if 0 /* debugging */ |
272 | # define EV_VERIFY 3 |
317 | # define EV_VERIFY 3 |
… | |
… | |
300 | # endif |
345 | # endif |
301 | #endif |
346 | #endif |
302 | |
347 | |
303 | /* 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 */ |
304 | |
349 | |
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350 | #ifdef _AIX |
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351 | /* AIX has a completely broken poll.h header */ |
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352 | # undef EV_USE_POLL |
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353 | # define EV_USE_POLL 0 |
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354 | #endif |
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355 | |
305 | #ifndef CLOCK_MONOTONIC |
356 | #ifndef CLOCK_MONOTONIC |
306 | # undef EV_USE_MONOTONIC |
357 | # undef EV_USE_MONOTONIC |
307 | # define EV_USE_MONOTONIC 0 |
358 | # define EV_USE_MONOTONIC 0 |
308 | #endif |
359 | #endif |
309 | |
360 | |
… | |
… | |
339 | #endif |
390 | #endif |
340 | |
391 | |
341 | #if EV_USE_EVENTFD |
392 | #if EV_USE_EVENTFD |
342 | /* our minimum requirement is glibc 2.7 which has the stub, but not the header */ |
393 | /* our minimum requirement is glibc 2.7 which has the stub, but not the header */ |
343 | # include <stdint.h> |
394 | # include <stdint.h> |
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|
395 | # ifndef EFD_NONBLOCK |
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396 | # define EFD_NONBLOCK O_NONBLOCK |
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397 | # endif |
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398 | # ifndef EFD_CLOEXEC |
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399 | # ifdef O_CLOEXEC |
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400 | # define EFD_CLOEXEC O_CLOEXEC |
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401 | # else |
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402 | # define EFD_CLOEXEC 02000000 |
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|
403 | # endif |
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|
404 | # endif |
344 | # ifdef __cplusplus |
405 | # ifdef __cplusplus |
345 | extern "C" { |
406 | extern "C" { |
346 | # endif |
407 | # endif |
347 | int eventfd (unsigned int initval, int flags); |
408 | int (eventfd) (unsigned int initval, int flags); |
348 | # ifdef __cplusplus |
409 | # ifdef __cplusplus |
349 | } |
410 | } |
350 | # endif |
411 | # endif |
351 | #endif |
412 | #endif |
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|
413 | |
|
|
414 | #if EV_USE_SIGNALFD |
|
|
415 | /* our minimum requirement is glibc 2.7 which has the stub, but not the header */ |
|
|
416 | # include <stdint.h> |
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417 | # ifndef SFD_NONBLOCK |
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418 | # define SFD_NONBLOCK O_NONBLOCK |
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419 | # endif |
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420 | # ifndef SFD_CLOEXEC |
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421 | # ifdef O_CLOEXEC |
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422 | # define SFD_CLOEXEC O_CLOEXEC |
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423 | # else |
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424 | # define SFD_CLOEXEC 02000000 |
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425 | # endif |
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426 | # endif |
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427 | # ifdef __cplusplus |
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428 | extern "C" { |
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429 | # endif |
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430 | int signalfd (int fd, const sigset_t *mask, int flags); |
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431 | |
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432 | struct signalfd_siginfo |
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|
433 | { |
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434 | uint32_t ssi_signo; |
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435 | char pad[128 - sizeof (uint32_t)]; |
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436 | }; |
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437 | # ifdef __cplusplus |
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438 | } |
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439 | # endif |
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440 | #endif |
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441 | |
352 | |
442 | |
353 | /**/ |
443 | /**/ |
354 | |
444 | |
355 | #if EV_VERIFY >= 3 |
445 | #if EV_VERIFY >= 3 |
356 | # define EV_FREQUENT_CHECK ev_loop_verify (EV_A) |
446 | # define EV_FREQUENT_CHECK ev_loop_verify (EV_A) |
… | |
… | |
368 | */ |
458 | */ |
369 | #define TIME_EPSILON 0.0001220703125 /* 1/8192 */ |
459 | #define TIME_EPSILON 0.0001220703125 /* 1/8192 */ |
370 | |
460 | |
371 | #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) */ |
372 | #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) */ |
373 | /*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */ |
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|
374 | |
463 | |
375 | #if __GNUC__ >= 4 |
464 | #if __GNUC__ >= 4 |
376 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
465 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
377 | # define noinline __attribute__ ((noinline)) |
466 | # define noinline __attribute__ ((noinline)) |
378 | #else |
467 | #else |
… | |
… | |
419 | |
508 | |
420 | #if EV_USE_MONOTONIC |
509 | #if EV_USE_MONOTONIC |
421 | 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? */ |
422 | #endif |
511 | #endif |
423 | |
512 | |
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|
513 | #ifndef EV_FD_TO_WIN32_HANDLE |
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514 | # define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd) |
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515 | #endif |
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516 | #ifndef EV_WIN32_HANDLE_TO_FD |
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517 | # define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0) |
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518 | #endif |
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519 | #ifndef EV_WIN32_CLOSE_FD |
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520 | # define EV_WIN32_CLOSE_FD(fd) close (fd) |
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521 | #endif |
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522 | |
424 | #ifdef _WIN32 |
523 | #ifdef _WIN32 |
425 | # include "ev_win32.c" |
524 | # include "ev_win32.c" |
426 | #endif |
525 | #endif |
427 | |
526 | |
428 | /*****************************************************************************/ |
527 | /*****************************************************************************/ |
… | |
… | |
443 | |
542 | |
444 | if (syserr_cb) |
543 | if (syserr_cb) |
445 | syserr_cb (msg); |
544 | syserr_cb (msg); |
446 | else |
545 | else |
447 | { |
546 | { |
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547 | #if EV_AVOID_STDIO |
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548 | write (STDERR_FILENO, msg, strlen (msg)); |
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549 | write (STDERR_FILENO, ": ", 2); |
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550 | msg = strerror (errno); |
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551 | write (STDERR_FILENO, msg, strlen (msg)); |
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552 | write (STDERR_FILENO, "\n", 1); |
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553 | #else |
448 | perror (msg); |
554 | perror (msg); |
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555 | #endif |
449 | abort (); |
556 | abort (); |
450 | } |
557 | } |
451 | } |
558 | } |
452 | |
559 | |
453 | static void * |
560 | static void * |
… | |
… | |
478 | { |
585 | { |
479 | ptr = alloc (ptr, size); |
586 | ptr = alloc (ptr, size); |
480 | |
587 | |
481 | if (!ptr && size) |
588 | if (!ptr && size) |
482 | { |
589 | { |
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590 | #if EV_AVOID_STDIO |
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591 | write (STDERR_FILENO, "libev: memory allocation failed, aborting.", |
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592 | sizeof ("libev: memory allocation failed, aborting.") - 1); |
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593 | #else |
483 | fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); |
594 | fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); |
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595 | #endif |
484 | abort (); |
596 | abort (); |
485 | } |
597 | } |
486 | |
598 | |
487 | return ptr; |
599 | return ptr; |
488 | } |
600 | } |
… | |
… | |
490 | #define ev_malloc(size) ev_realloc (0, (size)) |
602 | #define ev_malloc(size) ev_realloc (0, (size)) |
491 | #define ev_free(ptr) ev_realloc ((ptr), 0) |
603 | #define ev_free(ptr) ev_realloc ((ptr), 0) |
492 | |
604 | |
493 | /*****************************************************************************/ |
605 | /*****************************************************************************/ |
494 | |
606 | |
|
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607 | /* set in reify when reification needed */ |
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|
608 | #define EV_ANFD_REIFY 1 |
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609 | |
495 | /* file descriptor info structure */ |
610 | /* file descriptor info structure */ |
496 | typedef struct |
611 | typedef struct |
497 | { |
612 | { |
498 | WL head; |
613 | WL head; |
499 | unsigned char events; /* the events watched for */ |
614 | unsigned char events; /* the events watched for */ |
500 | unsigned char reify; /* flag set when this ANFD needs reification */ |
615 | unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ |
501 | unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ |
616 | unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ |
502 | unsigned char unused; |
617 | unsigned char unused; |
503 | #if EV_USE_EPOLL |
618 | #if EV_USE_EPOLL |
504 | unsigned int egen; /* generation counter to counter epoll bugs */ |
619 | unsigned int egen; /* generation counter to counter epoll bugs */ |
505 | #endif |
620 | #endif |
… | |
… | |
568 | static int ev_default_loop_ptr; |
683 | static int ev_default_loop_ptr; |
569 | |
684 | |
570 | #endif |
685 | #endif |
571 | |
686 | |
572 | #if EV_MINIMAL < 2 |
687 | #if EV_MINIMAL < 2 |
573 | # define EV_SUSPEND_CB if (expect_false (suspend_cb)) suspend_cb (EV_A) |
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574 | # define EV_RESUME_CB if (expect_false (resume_cb )) resume_cb (EV_A) |
688 | # define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) |
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689 | # define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) |
575 | # define EV_INVOKE_PENDING invoke_cb (EV_A) |
690 | # define EV_INVOKE_PENDING invoke_cb (EV_A) |
576 | #else |
691 | #else |
577 | # define EV_SUSPEND_CB (void)0 |
|
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578 | # define EV_RESUME_CB (void)0 |
692 | # define EV_RELEASE_CB (void)0 |
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|
693 | # define EV_ACQUIRE_CB (void)0 |
579 | # define EV_INVOKE_PENDING ev_invoke_pending (EV_A) |
694 | # define EV_INVOKE_PENDING ev_invoke_pending (EV_A) |
580 | #endif |
695 | #endif |
|
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696 | |
|
|
697 | #define EVUNLOOP_RECURSE 0x80 |
581 | |
698 | |
582 | /*****************************************************************************/ |
699 | /*****************************************************************************/ |
583 | |
700 | |
584 | #ifndef EV_HAVE_EV_TIME |
701 | #ifndef EV_HAVE_EV_TIME |
585 | ev_tstamp |
702 | ev_tstamp |
… | |
… | |
642 | |
759 | |
643 | tv.tv_sec = (time_t)delay; |
760 | tv.tv_sec = (time_t)delay; |
644 | tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); |
761 | tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); |
645 | |
762 | |
646 | /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ |
763 | /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ |
647 | /* somehting not guaranteed by newer posix versions, but guaranteed */ |
764 | /* something not guaranteed by newer posix versions, but guaranteed */ |
648 | /* by older ones */ |
765 | /* by older ones */ |
649 | select (0, 0, 0, 0, &tv); |
766 | select (0, 0, 0, 0, &tv); |
650 | #endif |
767 | #endif |
651 | } |
768 | } |
652 | } |
769 | } |
… | |
… | |
760 | } |
877 | } |
761 | |
878 | |
762 | /*****************************************************************************/ |
879 | /*****************************************************************************/ |
763 | |
880 | |
764 | inline_speed void |
881 | inline_speed void |
765 | fd_event (EV_P_ int fd, int revents) |
882 | fd_event_nc (EV_P_ int fd, int revents) |
766 | { |
883 | { |
767 | ANFD *anfd = anfds + fd; |
884 | ANFD *anfd = anfds + fd; |
768 | ev_io *w; |
885 | ev_io *w; |
769 | |
886 | |
770 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
887 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
… | |
… | |
774 | if (ev) |
891 | if (ev) |
775 | ev_feed_event (EV_A_ (W)w, ev); |
892 | ev_feed_event (EV_A_ (W)w, ev); |
776 | } |
893 | } |
777 | } |
894 | } |
778 | |
895 | |
|
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896 | /* do not submit kernel events for fds that have reify set */ |
|
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897 | /* because that means they changed while we were polling for new events */ |
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898 | inline_speed void |
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899 | fd_event (EV_P_ int fd, int revents) |
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900 | { |
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901 | ANFD *anfd = anfds + fd; |
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902 | |
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903 | if (expect_true (!anfd->reify)) |
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904 | fd_event_nc (EV_A_ fd, revents); |
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|
905 | } |
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906 | |
779 | void |
907 | void |
780 | ev_feed_fd_event (EV_P_ int fd, int revents) |
908 | ev_feed_fd_event (EV_P_ int fd, int revents) |
781 | { |
909 | { |
782 | if (fd >= 0 && fd < anfdmax) |
910 | if (fd >= 0 && fd < anfdmax) |
783 | fd_event (EV_A_ fd, revents); |
911 | fd_event_nc (EV_A_ fd, revents); |
784 | } |
912 | } |
785 | |
913 | |
786 | /* make sure the external fd watch events are in-sync */ |
914 | /* make sure the external fd watch events are in-sync */ |
787 | /* with the kernel/libev internal state */ |
915 | /* with the kernel/libev internal state */ |
788 | inline_size void |
916 | inline_size void |
… | |
… | |
803 | |
931 | |
804 | #if EV_SELECT_IS_WINSOCKET |
932 | #if EV_SELECT_IS_WINSOCKET |
805 | if (events) |
933 | if (events) |
806 | { |
934 | { |
807 | unsigned long arg; |
935 | unsigned long arg; |
808 | #ifdef EV_FD_TO_WIN32_HANDLE |
|
|
809 | anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); |
936 | anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); |
810 | #else |
|
|
811 | anfd->handle = _get_osfhandle (fd); |
|
|
812 | #endif |
|
|
813 | assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); |
937 | assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); |
814 | } |
938 | } |
815 | #endif |
939 | #endif |
816 | |
940 | |
817 | { |
941 | { |
… | |
… | |
860 | /* check whether the given fd is atcually valid, for error recovery */ |
984 | /* check whether the given fd is atcually valid, for error recovery */ |
861 | inline_size int |
985 | inline_size int |
862 | fd_valid (int fd) |
986 | fd_valid (int fd) |
863 | { |
987 | { |
864 | #ifdef _WIN32 |
988 | #ifdef _WIN32 |
865 | return _get_osfhandle (fd) != -1; |
989 | return EV_FD_TO_WIN32_HANDLE (fd) != -1; |
866 | #else |
990 | #else |
867 | return fcntl (fd, F_GETFD) != -1; |
991 | return fcntl (fd, F_GETFD) != -1; |
868 | #endif |
992 | #endif |
869 | } |
993 | } |
870 | |
994 | |
… | |
… | |
888 | |
1012 | |
889 | for (fd = anfdmax; fd--; ) |
1013 | for (fd = anfdmax; fd--; ) |
890 | if (anfds [fd].events) |
1014 | if (anfds [fd].events) |
891 | { |
1015 | { |
892 | fd_kill (EV_A_ fd); |
1016 | fd_kill (EV_A_ fd); |
893 | return; |
1017 | break; |
894 | } |
1018 | } |
895 | } |
1019 | } |
896 | |
1020 | |
897 | /* usually called after fork if backend needs to re-arm all fds from scratch */ |
1021 | /* usually called after fork if backend needs to re-arm all fds from scratch */ |
898 | static void noinline |
1022 | static void noinline |
… | |
… | |
903 | for (fd = 0; fd < anfdmax; ++fd) |
1027 | for (fd = 0; fd < anfdmax; ++fd) |
904 | if (anfds [fd].events) |
1028 | if (anfds [fd].events) |
905 | { |
1029 | { |
906 | anfds [fd].events = 0; |
1030 | anfds [fd].events = 0; |
907 | anfds [fd].emask = 0; |
1031 | anfds [fd].emask = 0; |
908 | fd_change (EV_A_ fd, EV__IOFDSET | 1); |
1032 | fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); |
909 | } |
1033 | } |
910 | } |
1034 | } |
911 | |
1035 | |
912 | /*****************************************************************************/ |
1036 | /*****************************************************************************/ |
913 | |
1037 | |
… | |
… | |
988 | |
1112 | |
989 | for (;;) |
1113 | for (;;) |
990 | { |
1114 | { |
991 | int c = k << 1; |
1115 | int c = k << 1; |
992 | |
1116 | |
993 | if (c > N + HEAP0 - 1) |
1117 | if (c >= N + HEAP0) |
994 | break; |
1118 | break; |
995 | |
1119 | |
996 | c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) |
1120 | c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) |
997 | ? 1 : 0; |
1121 | ? 1 : 0; |
998 | |
1122 | |
… | |
… | |
1034 | |
1158 | |
1035 | /* move an element suitably so it is in a correct place */ |
1159 | /* move an element suitably so it is in a correct place */ |
1036 | inline_size void |
1160 | inline_size void |
1037 | adjustheap (ANHE *heap, int N, int k) |
1161 | adjustheap (ANHE *heap, int N, int k) |
1038 | { |
1162 | { |
1039 | if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) |
1163 | if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)])) |
1040 | upheap (heap, k); |
1164 | upheap (heap, k); |
1041 | else |
1165 | else |
1042 | downheap (heap, N, k); |
1166 | downheap (heap, N, k); |
1043 | } |
1167 | } |
1044 | |
1168 | |
… | |
… | |
1057 | /*****************************************************************************/ |
1181 | /*****************************************************************************/ |
1058 | |
1182 | |
1059 | /* associate signal watchers to a signal signal */ |
1183 | /* associate signal watchers to a signal signal */ |
1060 | typedef struct |
1184 | typedef struct |
1061 | { |
1185 | { |
|
|
1186 | EV_ATOMIC_T pending; |
|
|
1187 | #if EV_MULTIPLICITY |
|
|
1188 | EV_P; |
|
|
1189 | #endif |
1062 | WL head; |
1190 | WL head; |
1063 | EV_ATOMIC_T gotsig; |
|
|
1064 | } ANSIG; |
1191 | } ANSIG; |
1065 | |
1192 | |
1066 | static ANSIG *signals; |
1193 | static ANSIG signals [EV_NSIG - 1]; |
1067 | static int signalmax; |
|
|
1068 | |
|
|
1069 | static EV_ATOMIC_T gotsig; |
|
|
1070 | |
1194 | |
1071 | /*****************************************************************************/ |
1195 | /*****************************************************************************/ |
1072 | |
1196 | |
1073 | /* used to prepare libev internal fd's */ |
1197 | /* used to prepare libev internal fd's */ |
1074 | /* this is not fork-safe */ |
1198 | /* this is not fork-safe */ |
1075 | inline_speed void |
1199 | inline_speed void |
1076 | fd_intern (int fd) |
1200 | fd_intern (int fd) |
1077 | { |
1201 | { |
1078 | #ifdef _WIN32 |
1202 | #ifdef _WIN32 |
1079 | unsigned long arg = 1; |
1203 | unsigned long arg = 1; |
1080 | ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); |
1204 | ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg); |
1081 | #else |
1205 | #else |
1082 | fcntl (fd, F_SETFD, FD_CLOEXEC); |
1206 | fcntl (fd, F_SETFD, FD_CLOEXEC); |
1083 | fcntl (fd, F_SETFL, O_NONBLOCK); |
1207 | fcntl (fd, F_SETFL, O_NONBLOCK); |
1084 | #endif |
1208 | #endif |
1085 | } |
1209 | } |
… | |
… | |
1088 | evpipe_init (EV_P) |
1212 | evpipe_init (EV_P) |
1089 | { |
1213 | { |
1090 | if (!ev_is_active (&pipe_w)) |
1214 | if (!ev_is_active (&pipe_w)) |
1091 | { |
1215 | { |
1092 | #if EV_USE_EVENTFD |
1216 | #if EV_USE_EVENTFD |
|
|
1217 | evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); |
|
|
1218 | if (evfd < 0 && errno == EINVAL) |
1093 | if ((evfd = eventfd (0, 0)) >= 0) |
1219 | evfd = eventfd (0, 0); |
|
|
1220 | |
|
|
1221 | if (evfd >= 0) |
1094 | { |
1222 | { |
1095 | evpipe [0] = -1; |
1223 | evpipe [0] = -1; |
1096 | fd_intern (evfd); |
1224 | fd_intern (evfd); /* doing it twice doesn't hurt */ |
1097 | ev_io_set (&pipe_w, evfd, EV_READ); |
1225 | ev_io_set (&pipe_w, evfd, EV_READ); |
1098 | } |
1226 | } |
1099 | else |
1227 | else |
1100 | #endif |
1228 | #endif |
1101 | { |
1229 | { |
… | |
… | |
1138 | /* called whenever the libev signal pipe */ |
1266 | /* called whenever the libev signal pipe */ |
1139 | /* got some events (signal, async) */ |
1267 | /* got some events (signal, async) */ |
1140 | static void |
1268 | static void |
1141 | pipecb (EV_P_ ev_io *iow, int revents) |
1269 | pipecb (EV_P_ ev_io *iow, int revents) |
1142 | { |
1270 | { |
|
|
1271 | int i; |
|
|
1272 | |
1143 | #if EV_USE_EVENTFD |
1273 | #if EV_USE_EVENTFD |
1144 | if (evfd >= 0) |
1274 | if (evfd >= 0) |
1145 | { |
1275 | { |
1146 | uint64_t counter; |
1276 | uint64_t counter; |
1147 | read (evfd, &counter, sizeof (uint64_t)); |
1277 | read (evfd, &counter, sizeof (uint64_t)); |
… | |
… | |
1151 | { |
1281 | { |
1152 | char dummy; |
1282 | char dummy; |
1153 | read (evpipe [0], &dummy, 1); |
1283 | read (evpipe [0], &dummy, 1); |
1154 | } |
1284 | } |
1155 | |
1285 | |
1156 | if (gotsig && ev_is_default_loop (EV_A)) |
1286 | if (sig_pending) |
1157 | { |
1287 | { |
1158 | int signum; |
1288 | sig_pending = 0; |
1159 | gotsig = 0; |
|
|
1160 | |
1289 | |
1161 | for (signum = signalmax; signum--; ) |
1290 | for (i = EV_NSIG - 1; i--; ) |
1162 | if (signals [signum].gotsig) |
1291 | if (expect_false (signals [i].pending)) |
1163 | ev_feed_signal_event (EV_A_ signum + 1); |
1292 | ev_feed_signal_event (EV_A_ i + 1); |
1164 | } |
1293 | } |
1165 | |
1294 | |
1166 | #if EV_ASYNC_ENABLE |
1295 | #if EV_ASYNC_ENABLE |
1167 | if (gotasync) |
1296 | if (async_pending) |
1168 | { |
1297 | { |
1169 | int i; |
1298 | async_pending = 0; |
1170 | gotasync = 0; |
|
|
1171 | |
1299 | |
1172 | for (i = asynccnt; i--; ) |
1300 | for (i = asynccnt; i--; ) |
1173 | if (asyncs [i]->sent) |
1301 | if (asyncs [i]->sent) |
1174 | { |
1302 | { |
1175 | asyncs [i]->sent = 0; |
1303 | asyncs [i]->sent = 0; |
… | |
… | |
1183 | |
1311 | |
1184 | static void |
1312 | static void |
1185 | ev_sighandler (int signum) |
1313 | ev_sighandler (int signum) |
1186 | { |
1314 | { |
1187 | #if EV_MULTIPLICITY |
1315 | #if EV_MULTIPLICITY |
1188 | struct ev_loop *loop = &default_loop_struct; |
1316 | EV_P = signals [signum - 1].loop; |
1189 | #endif |
1317 | #endif |
1190 | |
1318 | |
1191 | #if _WIN32 |
1319 | #ifdef _WIN32 |
1192 | signal (signum, ev_sighandler); |
1320 | signal (signum, ev_sighandler); |
1193 | #endif |
1321 | #endif |
1194 | |
1322 | |
1195 | signals [signum - 1].gotsig = 1; |
1323 | signals [signum - 1].pending = 1; |
1196 | evpipe_write (EV_A_ &gotsig); |
1324 | evpipe_write (EV_A_ &sig_pending); |
1197 | } |
1325 | } |
1198 | |
1326 | |
1199 | void noinline |
1327 | void noinline |
1200 | ev_feed_signal_event (EV_P_ int signum) |
1328 | ev_feed_signal_event (EV_P_ int signum) |
1201 | { |
1329 | { |
1202 | WL w; |
1330 | WL w; |
1203 | |
1331 | |
|
|
1332 | if (expect_false (signum <= 0 || signum > EV_NSIG)) |
|
|
1333 | return; |
|
|
1334 | |
|
|
1335 | --signum; |
|
|
1336 | |
1204 | #if EV_MULTIPLICITY |
1337 | #if EV_MULTIPLICITY |
1205 | assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); |
1338 | /* it is permissible to try to feed a signal to the wrong loop */ |
1206 | #endif |
1339 | /* or, likely more useful, feeding a signal nobody is waiting for */ |
1207 | |
1340 | |
1208 | --signum; |
1341 | if (expect_false (signals [signum].loop != EV_A)) |
1209 | |
|
|
1210 | if (signum < 0 || signum >= signalmax) |
|
|
1211 | return; |
1342 | return; |
|
|
1343 | #endif |
1212 | |
1344 | |
1213 | signals [signum].gotsig = 0; |
1345 | signals [signum].pending = 0; |
1214 | |
1346 | |
1215 | for (w = signals [signum].head; w; w = w->next) |
1347 | for (w = signals [signum].head; w; w = w->next) |
1216 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
1348 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
1217 | } |
1349 | } |
|
|
1350 | |
|
|
1351 | #if EV_USE_SIGNALFD |
|
|
1352 | static void |
|
|
1353 | sigfdcb (EV_P_ ev_io *iow, int revents) |
|
|
1354 | { |
|
|
1355 | struct signalfd_siginfo si[2], *sip; /* these structs are big */ |
|
|
1356 | |
|
|
1357 | for (;;) |
|
|
1358 | { |
|
|
1359 | ssize_t res = read (sigfd, si, sizeof (si)); |
|
|
1360 | |
|
|
1361 | /* not ISO-C, as res might be -1, but works with SuS */ |
|
|
1362 | for (sip = si; (char *)sip < (char *)si + res; ++sip) |
|
|
1363 | ev_feed_signal_event (EV_A_ sip->ssi_signo); |
|
|
1364 | |
|
|
1365 | if (res < (ssize_t)sizeof (si)) |
|
|
1366 | break; |
|
|
1367 | } |
|
|
1368 | } |
|
|
1369 | #endif |
1218 | |
1370 | |
1219 | /*****************************************************************************/ |
1371 | /*****************************************************************************/ |
1220 | |
1372 | |
1221 | static WL childs [EV_PID_HASHSIZE]; |
1373 | static WL childs [EV_PID_HASHSIZE]; |
1222 | |
1374 | |
… | |
… | |
1409 | void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) |
1561 | void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) |
1410 | { |
1562 | { |
1411 | invoke_cb = invoke_pending_cb; |
1563 | invoke_cb = invoke_pending_cb; |
1412 | } |
1564 | } |
1413 | |
1565 | |
1414 | void ev_set_blocking_cb (EV_P_ void (*suspend_cb_)(EV_P), void (*resume_cb_)(EV_P)) |
1566 | void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) |
1415 | { |
1567 | { |
1416 | suspend_cb = suspend_cb_; |
1568 | release_cb = release; |
1417 | resume_cb = resume_cb_; |
1569 | acquire_cb = acquire; |
1418 | } |
1570 | } |
1419 | #endif |
1571 | #endif |
1420 | |
1572 | |
1421 | /* initialise a loop structure, must be zero-initialised */ |
1573 | /* initialise a loop structure, must be zero-initialised */ |
1422 | static void noinline |
1574 | static void noinline |
… | |
… | |
1441 | |
1593 | |
1442 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
1594 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
1443 | have_monotonic = 1; |
1595 | have_monotonic = 1; |
1444 | } |
1596 | } |
1445 | #endif |
1597 | #endif |
|
|
1598 | |
|
|
1599 | /* pid check not overridable via env */ |
|
|
1600 | #ifndef _WIN32 |
|
|
1601 | if (flags & EVFLAG_FORKCHECK) |
|
|
1602 | curpid = getpid (); |
|
|
1603 | #endif |
|
|
1604 | |
|
|
1605 | if (!(flags & EVFLAG_NOENV) |
|
|
1606 | && !enable_secure () |
|
|
1607 | && getenv ("LIBEV_FLAGS")) |
|
|
1608 | flags = atoi (getenv ("LIBEV_FLAGS")); |
1446 | |
1609 | |
1447 | ev_rt_now = ev_time (); |
1610 | ev_rt_now = ev_time (); |
1448 | mn_now = get_clock (); |
1611 | mn_now = get_clock (); |
1449 | now_floor = mn_now; |
1612 | now_floor = mn_now; |
1450 | rtmn_diff = ev_rt_now - mn_now; |
1613 | rtmn_diff = ev_rt_now - mn_now; |
… | |
… | |
1454 | |
1617 | |
1455 | io_blocktime = 0.; |
1618 | io_blocktime = 0.; |
1456 | timeout_blocktime = 0.; |
1619 | timeout_blocktime = 0.; |
1457 | backend = 0; |
1620 | backend = 0; |
1458 | backend_fd = -1; |
1621 | backend_fd = -1; |
1459 | gotasync = 0; |
1622 | sig_pending = 0; |
|
|
1623 | #if EV_ASYNC_ENABLE |
|
|
1624 | async_pending = 0; |
|
|
1625 | #endif |
1460 | #if EV_USE_INOTIFY |
1626 | #if EV_USE_INOTIFY |
1461 | fs_fd = -2; |
1627 | fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; |
1462 | #endif |
1628 | #endif |
1463 | |
1629 | #if EV_USE_SIGNALFD |
1464 | /* pid check not overridable via env */ |
1630 | sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; |
1465 | #ifndef _WIN32 |
|
|
1466 | if (flags & EVFLAG_FORKCHECK) |
|
|
1467 | curpid = getpid (); |
|
|
1468 | #endif |
1631 | #endif |
1469 | |
|
|
1470 | if (!(flags & EVFLAG_NOENV) |
|
|
1471 | && !enable_secure () |
|
|
1472 | && getenv ("LIBEV_FLAGS")) |
|
|
1473 | flags = atoi (getenv ("LIBEV_FLAGS")); |
|
|
1474 | |
1632 | |
1475 | if (!(flags & 0x0000ffffU)) |
1633 | if (!(flags & 0x0000ffffU)) |
1476 | flags |= ev_recommended_backends (); |
1634 | flags |= ev_recommended_backends (); |
1477 | |
1635 | |
1478 | #if EV_USE_PORT |
1636 | #if EV_USE_PORT |
… | |
… | |
1504 | { |
1662 | { |
1505 | int i; |
1663 | int i; |
1506 | |
1664 | |
1507 | if (ev_is_active (&pipe_w)) |
1665 | if (ev_is_active (&pipe_w)) |
1508 | { |
1666 | { |
1509 | ev_ref (EV_A); /* signal watcher */ |
1667 | /*ev_ref (EV_A);*/ |
1510 | ev_io_stop (EV_A_ &pipe_w); |
1668 | /*ev_io_stop (EV_A_ &pipe_w);*/ |
1511 | |
1669 | |
1512 | #if EV_USE_EVENTFD |
1670 | #if EV_USE_EVENTFD |
1513 | if (evfd >= 0) |
1671 | if (evfd >= 0) |
1514 | close (evfd); |
1672 | close (evfd); |
1515 | #endif |
1673 | #endif |
1516 | |
1674 | |
1517 | if (evpipe [0] >= 0) |
1675 | if (evpipe [0] >= 0) |
1518 | { |
1676 | { |
1519 | close (evpipe [0]); |
1677 | EV_WIN32_CLOSE_FD (evpipe [0]); |
1520 | close (evpipe [1]); |
1678 | EV_WIN32_CLOSE_FD (evpipe [1]); |
1521 | } |
1679 | } |
1522 | } |
1680 | } |
|
|
1681 | |
|
|
1682 | #if EV_USE_SIGNALFD |
|
|
1683 | if (ev_is_active (&sigfd_w)) |
|
|
1684 | close (sigfd); |
|
|
1685 | #endif |
1523 | |
1686 | |
1524 | #if EV_USE_INOTIFY |
1687 | #if EV_USE_INOTIFY |
1525 | if (fs_fd >= 0) |
1688 | if (fs_fd >= 0) |
1526 | close (fs_fd); |
1689 | close (fs_fd); |
1527 | #endif |
1690 | #endif |
… | |
… | |
1551 | #if EV_IDLE_ENABLE |
1714 | #if EV_IDLE_ENABLE |
1552 | array_free (idle, [i]); |
1715 | array_free (idle, [i]); |
1553 | #endif |
1716 | #endif |
1554 | } |
1717 | } |
1555 | |
1718 | |
1556 | ev_free (anfds); anfdmax = 0; |
1719 | ev_free (anfds); anfds = 0; anfdmax = 0; |
1557 | |
1720 | |
1558 | /* have to use the microsoft-never-gets-it-right macro */ |
1721 | /* have to use the microsoft-never-gets-it-right macro */ |
1559 | array_free (rfeed, EMPTY); |
1722 | array_free (rfeed, EMPTY); |
1560 | array_free (fdchange, EMPTY); |
1723 | array_free (fdchange, EMPTY); |
1561 | array_free (timer, EMPTY); |
1724 | array_free (timer, EMPTY); |
… | |
… | |
1596 | |
1759 | |
1597 | if (ev_is_active (&pipe_w)) |
1760 | if (ev_is_active (&pipe_w)) |
1598 | { |
1761 | { |
1599 | /* this "locks" the handlers against writing to the pipe */ |
1762 | /* this "locks" the handlers against writing to the pipe */ |
1600 | /* while we modify the fd vars */ |
1763 | /* while we modify the fd vars */ |
1601 | gotsig = 1; |
1764 | sig_pending = 1; |
1602 | #if EV_ASYNC_ENABLE |
1765 | #if EV_ASYNC_ENABLE |
1603 | gotasync = 1; |
1766 | async_pending = 1; |
1604 | #endif |
1767 | #endif |
1605 | |
1768 | |
1606 | ev_ref (EV_A); |
1769 | ev_ref (EV_A); |
1607 | ev_io_stop (EV_A_ &pipe_w); |
1770 | ev_io_stop (EV_A_ &pipe_w); |
1608 | |
1771 | |
… | |
… | |
1611 | close (evfd); |
1774 | close (evfd); |
1612 | #endif |
1775 | #endif |
1613 | |
1776 | |
1614 | if (evpipe [0] >= 0) |
1777 | if (evpipe [0] >= 0) |
1615 | { |
1778 | { |
1616 | close (evpipe [0]); |
1779 | EV_WIN32_CLOSE_FD (evpipe [0]); |
1617 | close (evpipe [1]); |
1780 | EV_WIN32_CLOSE_FD (evpipe [1]); |
1618 | } |
1781 | } |
1619 | |
1782 | |
1620 | evpipe_init (EV_A); |
1783 | evpipe_init (EV_A); |
1621 | /* now iterate over everything, in case we missed something */ |
1784 | /* now iterate over everything, in case we missed something */ |
1622 | pipecb (EV_A_ &pipe_w, EV_READ); |
1785 | pipecb (EV_A_ &pipe_w, EV_READ); |
… | |
… | |
1628 | #if EV_MULTIPLICITY |
1791 | #if EV_MULTIPLICITY |
1629 | |
1792 | |
1630 | struct ev_loop * |
1793 | struct ev_loop * |
1631 | ev_loop_new (unsigned int flags) |
1794 | ev_loop_new (unsigned int flags) |
1632 | { |
1795 | { |
1633 | struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
1796 | EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
1634 | |
1797 | |
1635 | memset (loop, 0, sizeof (struct ev_loop)); |
1798 | memset (EV_A, 0, sizeof (struct ev_loop)); |
1636 | |
|
|
1637 | loop_init (EV_A_ flags); |
1799 | loop_init (EV_A_ flags); |
1638 | |
1800 | |
1639 | if (ev_backend (EV_A)) |
1801 | if (ev_backend (EV_A)) |
1640 | return loop; |
1802 | return EV_A; |
1641 | |
1803 | |
1642 | return 0; |
1804 | return 0; |
1643 | } |
1805 | } |
1644 | |
1806 | |
1645 | void |
1807 | void |
… | |
… | |
1749 | assert (checkmax >= checkcnt); |
1911 | assert (checkmax >= checkcnt); |
1750 | array_verify (EV_A_ (W *)checks, checkcnt); |
1912 | array_verify (EV_A_ (W *)checks, checkcnt); |
1751 | |
1913 | |
1752 | # if 0 |
1914 | # if 0 |
1753 | for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) |
1915 | for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) |
1754 | for (signum = signalmax; signum--; ) if (signals [signum].gotsig) |
1916 | for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) |
1755 | # endif |
1917 | # endif |
1756 | #endif |
1918 | #endif |
1757 | } |
1919 | } |
1758 | #endif |
1920 | #endif |
1759 | |
1921 | |
… | |
… | |
1766 | #endif |
1928 | #endif |
1767 | { |
1929 | { |
1768 | if (!ev_default_loop_ptr) |
1930 | if (!ev_default_loop_ptr) |
1769 | { |
1931 | { |
1770 | #if EV_MULTIPLICITY |
1932 | #if EV_MULTIPLICITY |
1771 | struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; |
1933 | EV_P = ev_default_loop_ptr = &default_loop_struct; |
1772 | #else |
1934 | #else |
1773 | ev_default_loop_ptr = 1; |
1935 | ev_default_loop_ptr = 1; |
1774 | #endif |
1936 | #endif |
1775 | |
1937 | |
1776 | loop_init (EV_A_ flags); |
1938 | loop_init (EV_A_ flags); |
… | |
… | |
1793 | |
1955 | |
1794 | void |
1956 | void |
1795 | ev_default_destroy (void) |
1957 | ev_default_destroy (void) |
1796 | { |
1958 | { |
1797 | #if EV_MULTIPLICITY |
1959 | #if EV_MULTIPLICITY |
1798 | struct ev_loop *loop = ev_default_loop_ptr; |
1960 | EV_P = ev_default_loop_ptr; |
1799 | #endif |
1961 | #endif |
1800 | |
1962 | |
1801 | ev_default_loop_ptr = 0; |
1963 | ev_default_loop_ptr = 0; |
1802 | |
1964 | |
1803 | #ifndef _WIN32 |
1965 | #ifndef _WIN32 |
… | |
… | |
1810 | |
1972 | |
1811 | void |
1973 | void |
1812 | ev_default_fork (void) |
1974 | ev_default_fork (void) |
1813 | { |
1975 | { |
1814 | #if EV_MULTIPLICITY |
1976 | #if EV_MULTIPLICITY |
1815 | struct ev_loop *loop = ev_default_loop_ptr; |
1977 | EV_P = ev_default_loop_ptr; |
1816 | #endif |
1978 | #endif |
1817 | |
1979 | |
1818 | postfork = 1; /* must be in line with ev_loop_fork */ |
1980 | postfork = 1; /* must be in line with ev_loop_fork */ |
1819 | } |
1981 | } |
1820 | |
1982 | |
… | |
… | |
1822 | |
1984 | |
1823 | void |
1985 | void |
1824 | ev_invoke (EV_P_ void *w, int revents) |
1986 | ev_invoke (EV_P_ void *w, int revents) |
1825 | { |
1987 | { |
1826 | EV_CB_INVOKE ((W)w, revents); |
1988 | EV_CB_INVOKE ((W)w, revents); |
|
|
1989 | } |
|
|
1990 | |
|
|
1991 | unsigned int |
|
|
1992 | ev_pending_count (EV_P) |
|
|
1993 | { |
|
|
1994 | int pri; |
|
|
1995 | unsigned int count = 0; |
|
|
1996 | |
|
|
1997 | for (pri = NUMPRI; pri--; ) |
|
|
1998 | count += pendingcnt [pri]; |
|
|
1999 | |
|
|
2000 | return count; |
1827 | } |
2001 | } |
1828 | |
2002 | |
1829 | void noinline |
2003 | void noinline |
1830 | ev_invoke_pending (EV_P) |
2004 | ev_invoke_pending (EV_P) |
1831 | { |
2005 | { |
… | |
… | |
2003 | ANHE_at_cache (*he); |
2177 | ANHE_at_cache (*he); |
2004 | } |
2178 | } |
2005 | } |
2179 | } |
2006 | |
2180 | |
2007 | /* fetch new monotonic and realtime times from the kernel */ |
2181 | /* fetch new monotonic and realtime times from the kernel */ |
2008 | /* also detetc if there was a timejump, and act accordingly */ |
2182 | /* also detect if there was a timejump, and act accordingly */ |
2009 | inline_speed void |
2183 | inline_speed void |
2010 | time_update (EV_P_ ev_tstamp max_block) |
2184 | time_update (EV_P_ ev_tstamp max_block) |
2011 | { |
2185 | { |
2012 | #if EV_USE_MONOTONIC |
2186 | #if EV_USE_MONOTONIC |
2013 | if (expect_true (have_monotonic)) |
2187 | if (expect_true (have_monotonic)) |
… | |
… | |
2077 | { |
2251 | { |
2078 | #if EV_MINIMAL < 2 |
2252 | #if EV_MINIMAL < 2 |
2079 | ++loop_depth; |
2253 | ++loop_depth; |
2080 | #endif |
2254 | #endif |
2081 | |
2255 | |
|
|
2256 | assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); |
|
|
2257 | |
2082 | loop_done = EVUNLOOP_CANCEL; |
2258 | loop_done = EVUNLOOP_CANCEL; |
2083 | |
2259 | |
2084 | EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ |
2260 | EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ |
2085 | |
2261 | |
2086 | do |
2262 | do |
… | |
… | |
2113 | { |
2289 | { |
2114 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
2290 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
2115 | EV_INVOKE_PENDING; |
2291 | EV_INVOKE_PENDING; |
2116 | } |
2292 | } |
2117 | |
2293 | |
|
|
2294 | if (expect_false (loop_done)) |
|
|
2295 | break; |
|
|
2296 | |
2118 | /* we might have forked, so reify kernel state if necessary */ |
2297 | /* we might have forked, so reify kernel state if necessary */ |
2119 | if (expect_false (postfork)) |
2298 | if (expect_false (postfork)) |
2120 | loop_fork (EV_A); |
2299 | loop_fork (EV_A); |
2121 | |
2300 | |
2122 | /* update fd-related kernel structures */ |
2301 | /* update fd-related kernel structures */ |
… | |
… | |
2172 | } |
2351 | } |
2173 | |
2352 | |
2174 | #if EV_MINIMAL < 2 |
2353 | #if EV_MINIMAL < 2 |
2175 | ++loop_count; |
2354 | ++loop_count; |
2176 | #endif |
2355 | #endif |
|
|
2356 | assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ |
2177 | backend_poll (EV_A_ waittime); |
2357 | backend_poll (EV_A_ waittime); |
|
|
2358 | assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ |
2178 | |
2359 | |
2179 | /* update ev_rt_now, do magic */ |
2360 | /* update ev_rt_now, do magic */ |
2180 | time_update (EV_A_ waittime + sleeptime); |
2361 | time_update (EV_A_ waittime + sleeptime); |
2181 | } |
2362 | } |
2182 | |
2363 | |
… | |
… | |
2267 | inline_size void |
2448 | inline_size void |
2268 | wlist_del (WL *head, WL elem) |
2449 | wlist_del (WL *head, WL elem) |
2269 | { |
2450 | { |
2270 | while (*head) |
2451 | while (*head) |
2271 | { |
2452 | { |
2272 | if (*head == elem) |
2453 | if (expect_true (*head == elem)) |
2273 | { |
2454 | { |
2274 | *head = elem->next; |
2455 | *head = elem->next; |
2275 | return; |
2456 | break; |
2276 | } |
2457 | } |
2277 | |
2458 | |
2278 | head = &(*head)->next; |
2459 | head = &(*head)->next; |
2279 | } |
2460 | } |
2280 | } |
2461 | } |
… | |
… | |
2340 | |
2521 | |
2341 | if (expect_false (ev_is_active (w))) |
2522 | if (expect_false (ev_is_active (w))) |
2342 | return; |
2523 | return; |
2343 | |
2524 | |
2344 | assert (("libev: ev_io_start called with negative fd", fd >= 0)); |
2525 | assert (("libev: ev_io_start called with negative fd", fd >= 0)); |
2345 | assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); |
2526 | assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); |
2346 | |
2527 | |
2347 | EV_FREQUENT_CHECK; |
2528 | EV_FREQUENT_CHECK; |
2348 | |
2529 | |
2349 | ev_start (EV_A_ (W)w, 1); |
2530 | ev_start (EV_A_ (W)w, 1); |
2350 | array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); |
2531 | array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); |
2351 | wlist_add (&anfds[fd].head, (WL)w); |
2532 | wlist_add (&anfds[fd].head, (WL)w); |
2352 | |
2533 | |
2353 | fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); |
2534 | fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); |
2354 | w->events &= ~EV__IOFDSET; |
2535 | w->events &= ~EV__IOFDSET; |
2355 | |
2536 | |
2356 | EV_FREQUENT_CHECK; |
2537 | EV_FREQUENT_CHECK; |
2357 | } |
2538 | } |
2358 | |
2539 | |
… | |
… | |
2420 | timers [active] = timers [timercnt + HEAP0]; |
2601 | timers [active] = timers [timercnt + HEAP0]; |
2421 | adjustheap (timers, timercnt, active); |
2602 | adjustheap (timers, timercnt, active); |
2422 | } |
2603 | } |
2423 | } |
2604 | } |
2424 | |
2605 | |
2425 | EV_FREQUENT_CHECK; |
|
|
2426 | |
|
|
2427 | ev_at (w) -= mn_now; |
2606 | ev_at (w) -= mn_now; |
2428 | |
2607 | |
2429 | ev_stop (EV_A_ (W)w); |
2608 | ev_stop (EV_A_ (W)w); |
|
|
2609 | |
|
|
2610 | EV_FREQUENT_CHECK; |
2430 | } |
2611 | } |
2431 | |
2612 | |
2432 | void noinline |
2613 | void noinline |
2433 | ev_timer_again (EV_P_ ev_timer *w) |
2614 | ev_timer_again (EV_P_ ev_timer *w) |
2434 | { |
2615 | { |
… | |
… | |
2452 | } |
2633 | } |
2453 | |
2634 | |
2454 | EV_FREQUENT_CHECK; |
2635 | EV_FREQUENT_CHECK; |
2455 | } |
2636 | } |
2456 | |
2637 | |
|
|
2638 | ev_tstamp |
|
|
2639 | ev_timer_remaining (EV_P_ ev_timer *w) |
|
|
2640 | { |
|
|
2641 | return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); |
|
|
2642 | } |
|
|
2643 | |
2457 | #if EV_PERIODIC_ENABLE |
2644 | #if EV_PERIODIC_ENABLE |
2458 | void noinline |
2645 | void noinline |
2459 | ev_periodic_start (EV_P_ ev_periodic *w) |
2646 | ev_periodic_start (EV_P_ ev_periodic *w) |
2460 | { |
2647 | { |
2461 | if (expect_false (ev_is_active (w))) |
2648 | if (expect_false (ev_is_active (w))) |
… | |
… | |
2507 | periodics [active] = periodics [periodiccnt + HEAP0]; |
2694 | periodics [active] = periodics [periodiccnt + HEAP0]; |
2508 | adjustheap (periodics, periodiccnt, active); |
2695 | adjustheap (periodics, periodiccnt, active); |
2509 | } |
2696 | } |
2510 | } |
2697 | } |
2511 | |
2698 | |
2512 | EV_FREQUENT_CHECK; |
|
|
2513 | |
|
|
2514 | ev_stop (EV_A_ (W)w); |
2699 | ev_stop (EV_A_ (W)w); |
|
|
2700 | |
|
|
2701 | EV_FREQUENT_CHECK; |
2515 | } |
2702 | } |
2516 | |
2703 | |
2517 | void noinline |
2704 | void noinline |
2518 | ev_periodic_again (EV_P_ ev_periodic *w) |
2705 | ev_periodic_again (EV_P_ ev_periodic *w) |
2519 | { |
2706 | { |
… | |
… | |
2528 | #endif |
2715 | #endif |
2529 | |
2716 | |
2530 | void noinline |
2717 | void noinline |
2531 | ev_signal_start (EV_P_ ev_signal *w) |
2718 | ev_signal_start (EV_P_ ev_signal *w) |
2532 | { |
2719 | { |
2533 | #if EV_MULTIPLICITY |
|
|
2534 | assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
2535 | #endif |
|
|
2536 | if (expect_false (ev_is_active (w))) |
2720 | if (expect_false (ev_is_active (w))) |
2537 | return; |
2721 | return; |
2538 | |
2722 | |
2539 | assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); |
2723 | assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); |
2540 | |
2724 | |
2541 | evpipe_init (EV_A); |
2725 | #if EV_MULTIPLICITY |
|
|
2726 | assert (("libev: a signal must not be attached to two different loops", |
|
|
2727 | !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); |
2542 | |
2728 | |
2543 | EV_FREQUENT_CHECK; |
2729 | signals [w->signum - 1].loop = EV_A; |
|
|
2730 | #endif |
2544 | |
2731 | |
|
|
2732 | EV_FREQUENT_CHECK; |
|
|
2733 | |
|
|
2734 | #if EV_USE_SIGNALFD |
|
|
2735 | if (sigfd == -2) |
2545 | { |
2736 | { |
2546 | #ifndef _WIN32 |
2737 | sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC); |
2547 | sigset_t full, prev; |
2738 | if (sigfd < 0 && errno == EINVAL) |
2548 | sigfillset (&full); |
2739 | sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */ |
2549 | sigprocmask (SIG_SETMASK, &full, &prev); |
|
|
2550 | #endif |
|
|
2551 | |
2740 | |
2552 | array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); |
2741 | if (sigfd >= 0) |
|
|
2742 | { |
|
|
2743 | fd_intern (sigfd); /* doing it twice will not hurt */ |
2553 | |
2744 | |
2554 | #ifndef _WIN32 |
2745 | sigemptyset (&sigfd_set); |
2555 | sigprocmask (SIG_SETMASK, &prev, 0); |
2746 | |
2556 | #endif |
2747 | ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ); |
|
|
2748 | ev_set_priority (&sigfd_w, EV_MAXPRI); |
|
|
2749 | ev_io_start (EV_A_ &sigfd_w); |
|
|
2750 | ev_unref (EV_A); /* signalfd watcher should not keep loop alive */ |
|
|
2751 | } |
2557 | } |
2752 | } |
|
|
2753 | |
|
|
2754 | if (sigfd >= 0) |
|
|
2755 | { |
|
|
2756 | /* TODO: check .head */ |
|
|
2757 | sigaddset (&sigfd_set, w->signum); |
|
|
2758 | sigprocmask (SIG_BLOCK, &sigfd_set, 0); |
|
|
2759 | |
|
|
2760 | signalfd (sigfd, &sigfd_set, 0); |
|
|
2761 | } |
|
|
2762 | #endif |
2558 | |
2763 | |
2559 | ev_start (EV_A_ (W)w, 1); |
2764 | ev_start (EV_A_ (W)w, 1); |
2560 | wlist_add (&signals [w->signum - 1].head, (WL)w); |
2765 | wlist_add (&signals [w->signum - 1].head, (WL)w); |
2561 | |
2766 | |
2562 | if (!((WL)w)->next) |
2767 | if (!((WL)w)->next) |
|
|
2768 | # if EV_USE_SIGNALFD |
|
|
2769 | if (sigfd < 0) /*TODO*/ |
|
|
2770 | # endif |
2563 | { |
2771 | { |
2564 | #if _WIN32 |
2772 | # ifdef _WIN32 |
|
|
2773 | evpipe_init (EV_A); |
|
|
2774 | |
2565 | signal (w->signum, ev_sighandler); |
2775 | signal (w->signum, ev_sighandler); |
2566 | #else |
2776 | # else |
2567 | struct sigaction sa; |
2777 | struct sigaction sa; |
|
|
2778 | |
|
|
2779 | evpipe_init (EV_A); |
|
|
2780 | |
2568 | sa.sa_handler = ev_sighandler; |
2781 | sa.sa_handler = ev_sighandler; |
2569 | sigfillset (&sa.sa_mask); |
2782 | sigfillset (&sa.sa_mask); |
2570 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
2783 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
2571 | sigaction (w->signum, &sa, 0); |
2784 | sigaction (w->signum, &sa, 0); |
|
|
2785 | |
|
|
2786 | sigemptyset (&sa.sa_mask); |
|
|
2787 | sigaddset (&sa.sa_mask, w->signum); |
|
|
2788 | sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); |
2572 | #endif |
2789 | #endif |
2573 | } |
2790 | } |
2574 | |
2791 | |
2575 | EV_FREQUENT_CHECK; |
2792 | EV_FREQUENT_CHECK; |
2576 | } |
2793 | } |
2577 | |
2794 | |
2578 | void noinline |
2795 | void noinline |
… | |
… | |
2586 | |
2803 | |
2587 | wlist_del (&signals [w->signum - 1].head, (WL)w); |
2804 | wlist_del (&signals [w->signum - 1].head, (WL)w); |
2588 | ev_stop (EV_A_ (W)w); |
2805 | ev_stop (EV_A_ (W)w); |
2589 | |
2806 | |
2590 | if (!signals [w->signum - 1].head) |
2807 | if (!signals [w->signum - 1].head) |
|
|
2808 | { |
|
|
2809 | #if EV_MULTIPLICITY |
|
|
2810 | signals [w->signum - 1].loop = 0; /* unattach from signal */ |
|
|
2811 | #endif |
|
|
2812 | #if EV_USE_SIGNALFD |
|
|
2813 | if (sigfd >= 0) |
|
|
2814 | { |
|
|
2815 | sigset_t ss; |
|
|
2816 | |
|
|
2817 | sigemptyset (&ss); |
|
|
2818 | sigaddset (&ss, w->signum); |
|
|
2819 | sigdelset (&sigfd_set, w->signum); |
|
|
2820 | |
|
|
2821 | signalfd (sigfd, &sigfd_set, 0); |
|
|
2822 | sigprocmask (SIG_UNBLOCK, &ss, 0); |
|
|
2823 | } |
|
|
2824 | else |
|
|
2825 | #endif |
2591 | signal (w->signum, SIG_DFL); |
2826 | signal (w->signum, SIG_DFL); |
|
|
2827 | } |
2592 | |
2828 | |
2593 | EV_FREQUENT_CHECK; |
2829 | EV_FREQUENT_CHECK; |
2594 | } |
2830 | } |
2595 | |
2831 | |
2596 | void |
2832 | void |
… | |
… | |
2637 | #define MIN_STAT_INTERVAL 0.1074891 |
2873 | #define MIN_STAT_INTERVAL 0.1074891 |
2638 | |
2874 | |
2639 | static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); |
2875 | static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); |
2640 | |
2876 | |
2641 | #if EV_USE_INOTIFY |
2877 | #if EV_USE_INOTIFY |
2642 | # define EV_INOTIFY_BUFSIZE 8192 |
2878 | |
|
|
2879 | /* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ |
|
|
2880 | # define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) |
2643 | |
2881 | |
2644 | static void noinline |
2882 | static void noinline |
2645 | infy_add (EV_P_ ev_stat *w) |
2883 | infy_add (EV_P_ ev_stat *w) |
2646 | { |
2884 | { |
2647 | 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); |
2885 | 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); |
2648 | |
2886 | |
2649 | if (w->wd < 0) |
2887 | if (w->wd >= 0) |
|
|
2888 | { |
|
|
2889 | struct statfs sfs; |
|
|
2890 | |
|
|
2891 | /* now local changes will be tracked by inotify, but remote changes won't */ |
|
|
2892 | /* unless the filesystem is known to be local, we therefore still poll */ |
|
|
2893 | /* also do poll on <2.6.25, but with normal frequency */ |
|
|
2894 | |
|
|
2895 | if (!fs_2625) |
|
|
2896 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
|
|
2897 | else if (!statfs (w->path, &sfs) |
|
|
2898 | && (sfs.f_type == 0x1373 /* devfs */ |
|
|
2899 | || sfs.f_type == 0xEF53 /* ext2/3 */ |
|
|
2900 | || sfs.f_type == 0x3153464a /* jfs */ |
|
|
2901 | || sfs.f_type == 0x52654973 /* reiser3 */ |
|
|
2902 | || sfs.f_type == 0x01021994 /* tempfs */ |
|
|
2903 | || sfs.f_type == 0x58465342 /* xfs */)) |
|
|
2904 | w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ |
|
|
2905 | else |
|
|
2906 | w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ |
2650 | { |
2907 | } |
|
|
2908 | else |
|
|
2909 | { |
|
|
2910 | /* can't use inotify, continue to stat */ |
2651 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
2911 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
2652 | ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ |
|
|
2653 | |
2912 | |
2654 | /* monitor some parent directory for speedup hints */ |
2913 | /* if path is not there, monitor some parent directory for speedup hints */ |
2655 | /* note that exceeding the hardcoded path limit is not a correctness issue, */ |
2914 | /* note that exceeding the hardcoded path limit is not a correctness issue, */ |
2656 | /* but an efficiency issue only */ |
2915 | /* but an efficiency issue only */ |
2657 | if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) |
2916 | if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) |
2658 | { |
2917 | { |
2659 | char path [4096]; |
2918 | char path [4096]; |
… | |
… | |
2675 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
2934 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
2676 | } |
2935 | } |
2677 | } |
2936 | } |
2678 | |
2937 | |
2679 | if (w->wd >= 0) |
2938 | if (w->wd >= 0) |
2680 | { |
|
|
2681 | wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); |
2939 | wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); |
2682 | |
2940 | |
2683 | /* now local changes will be tracked by inotify, but remote changes won't */ |
2941 | /* now re-arm timer, if required */ |
2684 | /* unless the filesystem it known to be local, we therefore still poll */ |
2942 | if (ev_is_active (&w->timer)) ev_ref (EV_A); |
2685 | /* also do poll on <2.6.25, but with normal frequency */ |
|
|
2686 | struct statfs sfs; |
|
|
2687 | |
|
|
2688 | if (fs_2625 && !statfs (w->path, &sfs)) |
|
|
2689 | if (sfs.f_type == 0x1373 /* devfs */ |
|
|
2690 | || sfs.f_type == 0xEF53 /* ext2/3 */ |
|
|
2691 | || sfs.f_type == 0x3153464a /* jfs */ |
|
|
2692 | || sfs.f_type == 0x52654973 /* reiser3 */ |
|
|
2693 | || sfs.f_type == 0x01021994 /* tempfs */ |
|
|
2694 | || sfs.f_type == 0x58465342 /* xfs */) |
|
|
2695 | return; |
|
|
2696 | |
|
|
2697 | w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL; |
|
|
2698 | ev_timer_again (EV_A_ &w->timer); |
2943 | ev_timer_again (EV_A_ &w->timer); |
2699 | } |
2944 | if (ev_is_active (&w->timer)) ev_unref (EV_A); |
2700 | } |
2945 | } |
2701 | |
2946 | |
2702 | static void noinline |
2947 | static void noinline |
2703 | infy_del (EV_P_ ev_stat *w) |
2948 | infy_del (EV_P_ ev_stat *w) |
2704 | { |
2949 | { |
… | |
… | |
2749 | |
2994 | |
2750 | static void |
2995 | static void |
2751 | infy_cb (EV_P_ ev_io *w, int revents) |
2996 | infy_cb (EV_P_ ev_io *w, int revents) |
2752 | { |
2997 | { |
2753 | char buf [EV_INOTIFY_BUFSIZE]; |
2998 | char buf [EV_INOTIFY_BUFSIZE]; |
2754 | struct inotify_event *ev = (struct inotify_event *)buf; |
|
|
2755 | int ofs; |
2999 | int ofs; |
2756 | int len = read (fs_fd, buf, sizeof (buf)); |
3000 | int len = read (fs_fd, buf, sizeof (buf)); |
2757 | |
3001 | |
2758 | for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) |
3002 | for (ofs = 0; ofs < len; ) |
|
|
3003 | { |
|
|
3004 | struct inotify_event *ev = (struct inotify_event *)(buf + ofs); |
2759 | infy_wd (EV_A_ ev->wd, ev->wd, ev); |
3005 | infy_wd (EV_A_ ev->wd, ev->wd, ev); |
|
|
3006 | ofs += sizeof (struct inotify_event) + ev->len; |
|
|
3007 | } |
|
|
3008 | } |
|
|
3009 | |
|
|
3010 | inline_size unsigned int |
|
|
3011 | ev_linux_version (void) |
|
|
3012 | { |
|
|
3013 | struct utsname buf; |
|
|
3014 | unsigned int v; |
|
|
3015 | int i; |
|
|
3016 | char *p = buf.release; |
|
|
3017 | |
|
|
3018 | if (uname (&buf)) |
|
|
3019 | return 0; |
|
|
3020 | |
|
|
3021 | for (i = 3+1; --i; ) |
|
|
3022 | { |
|
|
3023 | unsigned int c = 0; |
|
|
3024 | |
|
|
3025 | for (;;) |
|
|
3026 | { |
|
|
3027 | if (*p >= '0' && *p <= '9') |
|
|
3028 | c = c * 10 + *p++ - '0'; |
|
|
3029 | else |
|
|
3030 | { |
|
|
3031 | p += *p == '.'; |
|
|
3032 | break; |
|
|
3033 | } |
|
|
3034 | } |
|
|
3035 | |
|
|
3036 | v = (v << 8) | c; |
|
|
3037 | } |
|
|
3038 | |
|
|
3039 | return v; |
2760 | } |
3040 | } |
2761 | |
3041 | |
2762 | inline_size void |
3042 | inline_size void |
2763 | check_2625 (EV_P) |
3043 | ev_check_2625 (EV_P) |
2764 | { |
3044 | { |
2765 | /* kernels < 2.6.25 are borked |
3045 | /* kernels < 2.6.25 are borked |
2766 | * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html |
3046 | * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html |
2767 | */ |
3047 | */ |
2768 | struct utsname buf; |
3048 | if (ev_linux_version () < 0x020619) |
2769 | int major, minor, micro; |
|
|
2770 | |
|
|
2771 | if (uname (&buf)) |
|
|
2772 | return; |
3049 | return; |
2773 | |
3050 | |
2774 | if (sscanf (buf.release, "%d.%d.%d", &major, &minor, µ) != 3) |
|
|
2775 | return; |
|
|
2776 | |
|
|
2777 | if (major < 2 |
|
|
2778 | || (major == 2 && minor < 6) |
|
|
2779 | || (major == 2 && minor == 6 && micro < 25)) |
|
|
2780 | return; |
|
|
2781 | |
|
|
2782 | fs_2625 = 1; |
3051 | fs_2625 = 1; |
|
|
3052 | } |
|
|
3053 | |
|
|
3054 | inline_size int |
|
|
3055 | infy_newfd (void) |
|
|
3056 | { |
|
|
3057 | #if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) |
|
|
3058 | int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); |
|
|
3059 | if (fd >= 0) |
|
|
3060 | return fd; |
|
|
3061 | #endif |
|
|
3062 | return inotify_init (); |
2783 | } |
3063 | } |
2784 | |
3064 | |
2785 | inline_size void |
3065 | inline_size void |
2786 | infy_init (EV_P) |
3066 | infy_init (EV_P) |
2787 | { |
3067 | { |
2788 | if (fs_fd != -2) |
3068 | if (fs_fd != -2) |
2789 | return; |
3069 | return; |
2790 | |
3070 | |
2791 | fs_fd = -1; |
3071 | fs_fd = -1; |
2792 | |
3072 | |
2793 | check_2625 (EV_A); |
3073 | ev_check_2625 (EV_A); |
2794 | |
3074 | |
2795 | fs_fd = inotify_init (); |
3075 | fs_fd = infy_newfd (); |
2796 | |
3076 | |
2797 | if (fs_fd >= 0) |
3077 | if (fs_fd >= 0) |
2798 | { |
3078 | { |
|
|
3079 | fd_intern (fs_fd); |
2799 | ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); |
3080 | ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); |
2800 | ev_set_priority (&fs_w, EV_MAXPRI); |
3081 | ev_set_priority (&fs_w, EV_MAXPRI); |
2801 | ev_io_start (EV_A_ &fs_w); |
3082 | ev_io_start (EV_A_ &fs_w); |
|
|
3083 | ev_unref (EV_A); |
2802 | } |
3084 | } |
2803 | } |
3085 | } |
2804 | |
3086 | |
2805 | inline_size void |
3087 | inline_size void |
2806 | infy_fork (EV_P) |
3088 | infy_fork (EV_P) |
… | |
… | |
2808 | int slot; |
3090 | int slot; |
2809 | |
3091 | |
2810 | if (fs_fd < 0) |
3092 | if (fs_fd < 0) |
2811 | return; |
3093 | return; |
2812 | |
3094 | |
|
|
3095 | ev_ref (EV_A); |
|
|
3096 | ev_io_stop (EV_A_ &fs_w); |
2813 | close (fs_fd); |
3097 | close (fs_fd); |
2814 | fs_fd = inotify_init (); |
3098 | fs_fd = infy_newfd (); |
|
|
3099 | |
|
|
3100 | if (fs_fd >= 0) |
|
|
3101 | { |
|
|
3102 | fd_intern (fs_fd); |
|
|
3103 | ev_io_set (&fs_w, fs_fd, EV_READ); |
|
|
3104 | ev_io_start (EV_A_ &fs_w); |
|
|
3105 | ev_unref (EV_A); |
|
|
3106 | } |
2815 | |
3107 | |
2816 | for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) |
3108 | for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) |
2817 | { |
3109 | { |
2818 | WL w_ = fs_hash [slot].head; |
3110 | WL w_ = fs_hash [slot].head; |
2819 | fs_hash [slot].head = 0; |
3111 | fs_hash [slot].head = 0; |
… | |
… | |
2826 | w->wd = -1; |
3118 | w->wd = -1; |
2827 | |
3119 | |
2828 | if (fs_fd >= 0) |
3120 | if (fs_fd >= 0) |
2829 | infy_add (EV_A_ w); /* re-add, no matter what */ |
3121 | infy_add (EV_A_ w); /* re-add, no matter what */ |
2830 | else |
3122 | else |
|
|
3123 | { |
|
|
3124 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
|
|
3125 | if (ev_is_active (&w->timer)) ev_ref (EV_A); |
2831 | ev_timer_again (EV_A_ &w->timer); |
3126 | ev_timer_again (EV_A_ &w->timer); |
|
|
3127 | if (ev_is_active (&w->timer)) ev_unref (EV_A); |
|
|
3128 | } |
2832 | } |
3129 | } |
2833 | } |
3130 | } |
2834 | } |
3131 | } |
2835 | |
3132 | |
2836 | #endif |
3133 | #endif |
… | |
… | |
2853 | static void noinline |
3150 | static void noinline |
2854 | stat_timer_cb (EV_P_ ev_timer *w_, int revents) |
3151 | stat_timer_cb (EV_P_ ev_timer *w_, int revents) |
2855 | { |
3152 | { |
2856 | ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); |
3153 | ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); |
2857 | |
3154 | |
2858 | /* we copy this here each the time so that */ |
3155 | ev_statdata prev = w->attr; |
2859 | /* prev has the old value when the callback gets invoked */ |
|
|
2860 | w->prev = w->attr; |
|
|
2861 | ev_stat_stat (EV_A_ w); |
3156 | ev_stat_stat (EV_A_ w); |
2862 | |
3157 | |
2863 | /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ |
3158 | /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ |
2864 | if ( |
3159 | if ( |
2865 | w->prev.st_dev != w->attr.st_dev |
3160 | prev.st_dev != w->attr.st_dev |
2866 | || w->prev.st_ino != w->attr.st_ino |
3161 | || prev.st_ino != w->attr.st_ino |
2867 | || w->prev.st_mode != w->attr.st_mode |
3162 | || prev.st_mode != w->attr.st_mode |
2868 | || w->prev.st_nlink != w->attr.st_nlink |
3163 | || prev.st_nlink != w->attr.st_nlink |
2869 | || w->prev.st_uid != w->attr.st_uid |
3164 | || prev.st_uid != w->attr.st_uid |
2870 | || w->prev.st_gid != w->attr.st_gid |
3165 | || prev.st_gid != w->attr.st_gid |
2871 | || w->prev.st_rdev != w->attr.st_rdev |
3166 | || prev.st_rdev != w->attr.st_rdev |
2872 | || w->prev.st_size != w->attr.st_size |
3167 | || prev.st_size != w->attr.st_size |
2873 | || w->prev.st_atime != w->attr.st_atime |
3168 | || prev.st_atime != w->attr.st_atime |
2874 | || w->prev.st_mtime != w->attr.st_mtime |
3169 | || prev.st_mtime != w->attr.st_mtime |
2875 | || w->prev.st_ctime != w->attr.st_ctime |
3170 | || prev.st_ctime != w->attr.st_ctime |
2876 | ) { |
3171 | ) { |
|
|
3172 | /* we only update w->prev on actual differences */ |
|
|
3173 | /* in case we test more often than invoke the callback, */ |
|
|
3174 | /* to ensure that prev is always different to attr */ |
|
|
3175 | w->prev = prev; |
|
|
3176 | |
2877 | #if EV_USE_INOTIFY |
3177 | #if EV_USE_INOTIFY |
2878 | if (fs_fd >= 0) |
3178 | if (fs_fd >= 0) |
2879 | { |
3179 | { |
2880 | infy_del (EV_A_ w); |
3180 | infy_del (EV_A_ w); |
2881 | infy_add (EV_A_ w); |
3181 | infy_add (EV_A_ w); |
… | |
… | |
2906 | |
3206 | |
2907 | if (fs_fd >= 0) |
3207 | if (fs_fd >= 0) |
2908 | infy_add (EV_A_ w); |
3208 | infy_add (EV_A_ w); |
2909 | else |
3209 | else |
2910 | #endif |
3210 | #endif |
|
|
3211 | { |
2911 | ev_timer_again (EV_A_ &w->timer); |
3212 | ev_timer_again (EV_A_ &w->timer); |
|
|
3213 | ev_unref (EV_A); |
|
|
3214 | } |
2912 | |
3215 | |
2913 | ev_start (EV_A_ (W)w, 1); |
3216 | ev_start (EV_A_ (W)w, 1); |
2914 | |
3217 | |
2915 | EV_FREQUENT_CHECK; |
3218 | EV_FREQUENT_CHECK; |
2916 | } |
3219 | } |
… | |
… | |
2925 | EV_FREQUENT_CHECK; |
3228 | EV_FREQUENT_CHECK; |
2926 | |
3229 | |
2927 | #if EV_USE_INOTIFY |
3230 | #if EV_USE_INOTIFY |
2928 | infy_del (EV_A_ w); |
3231 | infy_del (EV_A_ w); |
2929 | #endif |
3232 | #endif |
|
|
3233 | |
|
|
3234 | if (ev_is_active (&w->timer)) |
|
|
3235 | { |
|
|
3236 | ev_ref (EV_A); |
2930 | ev_timer_stop (EV_A_ &w->timer); |
3237 | ev_timer_stop (EV_A_ &w->timer); |
|
|
3238 | } |
2931 | |
3239 | |
2932 | ev_stop (EV_A_ (W)w); |
3240 | ev_stop (EV_A_ (W)w); |
2933 | |
3241 | |
2934 | EV_FREQUENT_CHECK; |
3242 | EV_FREQUENT_CHECK; |
2935 | } |
3243 | } |
… | |
… | |
3076 | embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) |
3384 | embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) |
3077 | { |
3385 | { |
3078 | ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); |
3386 | ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); |
3079 | |
3387 | |
3080 | { |
3388 | { |
3081 | struct ev_loop *loop = w->other; |
3389 | EV_P = w->other; |
3082 | |
3390 | |
3083 | while (fdchangecnt) |
3391 | while (fdchangecnt) |
3084 | { |
3392 | { |
3085 | fd_reify (EV_A); |
3393 | fd_reify (EV_A); |
3086 | ev_loop (EV_A_ EVLOOP_NONBLOCK); |
3394 | ev_loop (EV_A_ EVLOOP_NONBLOCK); |
… | |
… | |
3094 | ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); |
3402 | ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); |
3095 | |
3403 | |
3096 | ev_embed_stop (EV_A_ w); |
3404 | ev_embed_stop (EV_A_ w); |
3097 | |
3405 | |
3098 | { |
3406 | { |
3099 | struct ev_loop *loop = w->other; |
3407 | EV_P = w->other; |
3100 | |
3408 | |
3101 | ev_loop_fork (EV_A); |
3409 | ev_loop_fork (EV_A); |
3102 | ev_loop (EV_A_ EVLOOP_NONBLOCK); |
3410 | ev_loop (EV_A_ EVLOOP_NONBLOCK); |
3103 | } |
3411 | } |
3104 | |
3412 | |
… | |
… | |
3118 | { |
3426 | { |
3119 | if (expect_false (ev_is_active (w))) |
3427 | if (expect_false (ev_is_active (w))) |
3120 | return; |
3428 | return; |
3121 | |
3429 | |
3122 | { |
3430 | { |
3123 | struct ev_loop *loop = w->other; |
3431 | EV_P = w->other; |
3124 | assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); |
3432 | assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); |
3125 | ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); |
3433 | ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); |
3126 | } |
3434 | } |
3127 | |
3435 | |
3128 | EV_FREQUENT_CHECK; |
3436 | EV_FREQUENT_CHECK; |
… | |
… | |
3155 | |
3463 | |
3156 | ev_io_stop (EV_A_ &w->io); |
3464 | ev_io_stop (EV_A_ &w->io); |
3157 | ev_prepare_stop (EV_A_ &w->prepare); |
3465 | ev_prepare_stop (EV_A_ &w->prepare); |
3158 | ev_fork_stop (EV_A_ &w->fork); |
3466 | ev_fork_stop (EV_A_ &w->fork); |
3159 | |
3467 | |
|
|
3468 | ev_stop (EV_A_ (W)w); |
|
|
3469 | |
3160 | EV_FREQUENT_CHECK; |
3470 | EV_FREQUENT_CHECK; |
3161 | } |
3471 | } |
3162 | #endif |
3472 | #endif |
3163 | |
3473 | |
3164 | #if EV_FORK_ENABLE |
3474 | #if EV_FORK_ENABLE |
… | |
… | |
3240 | |
3550 | |
3241 | void |
3551 | void |
3242 | ev_async_send (EV_P_ ev_async *w) |
3552 | ev_async_send (EV_P_ ev_async *w) |
3243 | { |
3553 | { |
3244 | w->sent = 1; |
3554 | w->sent = 1; |
3245 | evpipe_write (EV_A_ &gotasync); |
3555 | evpipe_write (EV_A_ &async_pending); |
3246 | } |
3556 | } |
3247 | #endif |
3557 | #endif |
3248 | |
3558 | |
3249 | /*****************************************************************************/ |
3559 | /*****************************************************************************/ |
3250 | |
3560 | |
… | |
… | |
3399 | if (types & EV_CHECK) |
3709 | if (types & EV_CHECK) |
3400 | for (i = checkcnt; i--; ) |
3710 | for (i = checkcnt; i--; ) |
3401 | cb (EV_A_ EV_CHECK, checks [i]); |
3711 | cb (EV_A_ EV_CHECK, checks [i]); |
3402 | |
3712 | |
3403 | if (types & EV_SIGNAL) |
3713 | if (types & EV_SIGNAL) |
3404 | for (i = 0; i < signalmax; ++i) |
3714 | for (i = 0; i < EV_NSIG - 1; ++i) |
3405 | for (wl = signals [i].head; wl; ) |
3715 | for (wl = signals [i].head; wl; ) |
3406 | { |
3716 | { |
3407 | wn = wl->next; |
3717 | wn = wl->next; |
3408 | cb (EV_A_ EV_SIGNAL, wl); |
3718 | cb (EV_A_ EV_SIGNAL, wl); |
3409 | wl = wn; |
3719 | wl = wn; |