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Comparing libev/ev.c (file contents):
Revision 1.302 by root, Thu Jul 16 15:08:08 2009 UTC vs.
Revision 1.378 by root, Mon Jun 13 09:52:36 2011 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
10 * 1. Redistributions of source code must retain the above copyright notice, 10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer. 11 * this list of conditions and the following disclaimer.
12 * 12 *
13 * 2. Redistributions in binary form must reproduce the above copyright 13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the 14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution. 15 * documentation and/or other materials provided with the distribution.
16 * 16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
50# endif 46# endif
47
48#if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
52#endif
51 53
52# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
55# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
77# ifndef EV_USE_REALTIME 79# ifndef EV_USE_REALTIME
78# define EV_USE_REALTIME 0 80# define EV_USE_REALTIME 0
79# endif 81# endif
80# endif 82# endif
81 83
84# if HAVE_NANOSLEEP
82# ifndef EV_USE_NANOSLEEP 85# ifndef EV_USE_NANOSLEEP
83# if HAVE_NANOSLEEP
84# define EV_USE_NANOSLEEP 1 86# define EV_USE_NANOSLEEP EV_FEATURE_OS
87# endif
85# else 88# else
89# undef EV_USE_NANOSLEEP
86# define EV_USE_NANOSLEEP 0 90# define EV_USE_NANOSLEEP 0
91# endif
92
93# if HAVE_SELECT && HAVE_SYS_SELECT_H
94# ifndef EV_USE_SELECT
95# define EV_USE_SELECT EV_FEATURE_BACKENDS
87# endif 96# endif
97# else
98# undef EV_USE_SELECT
99# define EV_USE_SELECT 0
88# endif 100# endif
89 101
102# if HAVE_POLL && HAVE_POLL_H
90# ifndef EV_USE_SELECT 103# ifndef EV_USE_POLL
91# if HAVE_SELECT && HAVE_SYS_SELECT_H 104# define EV_USE_POLL EV_FEATURE_BACKENDS
92# define EV_USE_SELECT 1
93# else
94# define EV_USE_SELECT 0
95# endif 105# endif
96# endif
97
98# ifndef EV_USE_POLL
99# if HAVE_POLL && HAVE_POLL_H
100# define EV_USE_POLL 1
101# else 106# else
107# undef EV_USE_POLL
102# define EV_USE_POLL 0 108# define EV_USE_POLL 0
103# endif
104# endif 109# endif
105 110
106# ifndef EV_USE_EPOLL
107# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 111# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
108# define EV_USE_EPOLL 1 112# ifndef EV_USE_EPOLL
109# else 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
110# define EV_USE_EPOLL 0
111# endif 114# endif
115# else
116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0
112# endif 118# endif
113 119
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
114# ifndef EV_USE_KQUEUE 121# ifndef EV_USE_KQUEUE
115# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
116# define EV_USE_KQUEUE 1
117# else
118# define EV_USE_KQUEUE 0
119# endif 123# endif
124# else
125# undef EV_USE_KQUEUE
126# define EV_USE_KQUEUE 0
120# endif 127# endif
121 128
122# ifndef EV_USE_PORT
123# if HAVE_PORT_H && HAVE_PORT_CREATE 129# if HAVE_PORT_H && HAVE_PORT_CREATE
124# define EV_USE_PORT 1 130# ifndef EV_USE_PORT
125# else 131# define EV_USE_PORT EV_FEATURE_BACKENDS
126# define EV_USE_PORT 0
127# endif 132# endif
133# else
134# undef EV_USE_PORT
135# define EV_USE_PORT 0
128# endif 136# endif
129 137
130# ifndef EV_USE_INOTIFY
131# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 138# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
132# define EV_USE_INOTIFY 1 139# ifndef EV_USE_INOTIFY
133# else
134# define EV_USE_INOTIFY 0 140# define EV_USE_INOTIFY EV_FEATURE_OS
135# endif 141# endif
142# else
143# undef EV_USE_INOTIFY
144# define EV_USE_INOTIFY 0
136# endif 145# endif
137 146
147# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
138# ifndef EV_USE_EVENTFD 148# ifndef EV_USE_SIGNALFD
139# if HAVE_EVENTFD 149# define EV_USE_SIGNALFD EV_FEATURE_OS
140# define EV_USE_EVENTFD 1
141# else
142# define EV_USE_EVENTFD 0
143# endif 150# endif
151# else
152# undef EV_USE_SIGNALFD
153# define EV_USE_SIGNALFD 0
154# endif
155
156# if HAVE_EVENTFD
157# ifndef EV_USE_EVENTFD
158# define EV_USE_EVENTFD EV_FEATURE_OS
159# endif
160# else
161# undef EV_USE_EVENTFD
162# define EV_USE_EVENTFD 0
144# endif 163# endif
145 164
146#endif 165#endif
147 166
148#include <math.h>
149#include <stdlib.h> 167#include <stdlib.h>
168#include <string.h>
150#include <fcntl.h> 169#include <fcntl.h>
151#include <stddef.h> 170#include <stddef.h>
152 171
153#include <stdio.h> 172#include <stdio.h>
154 173
155#include <assert.h> 174#include <assert.h>
156#include <errno.h> 175#include <errno.h>
157#include <sys/types.h> 176#include <sys/types.h>
158#include <time.h> 177#include <time.h>
178#include <limits.h>
159 179
160#include <signal.h> 180#include <signal.h>
161 181
162#ifdef EV_H 182#ifdef EV_H
163# include EV_H 183# include EV_H
164#else 184#else
165# include "ev.h" 185# include "ev.h"
166#endif 186#endif
187
188EV_CPP(extern "C" {)
167 189
168#ifndef _WIN32 190#ifndef _WIN32
169# include <sys/time.h> 191# include <sys/time.h>
170# include <sys/wait.h> 192# include <sys/wait.h>
171# include <unistd.h> 193# include <unistd.h>
… …
174# define WIN32_LEAN_AND_MEAN 196# define WIN32_LEAN_AND_MEAN
175# include <windows.h> 197# include <windows.h>
176# ifndef EV_SELECT_IS_WINSOCKET 198# ifndef EV_SELECT_IS_WINSOCKET
177# define EV_SELECT_IS_WINSOCKET 1 199# define EV_SELECT_IS_WINSOCKET 1
178# endif 200# endif
201# undef EV_AVOID_STDIO
179#endif 202#endif
203
204/* OS X, in its infinite idiocy, actually HARDCODES
205 * a limit of 1024 into their select. Where people have brains,
206 * OS X engineers apparently have a vacuum. Or maybe they were
207 * ordered to have a vacuum, or they do anything for money.
208 * This might help. Or not.
209 */
210#define _DARWIN_UNLIMITED_SELECT 1
180 211
181/* this block tries to deduce configuration from header-defined symbols and defaults */ 212/* this block tries to deduce configuration from header-defined symbols and defaults */
213
214/* try to deduce the maximum number of signals on this platform */
215#if defined (EV_NSIG)
216/* use what's provided */
217#elif defined (NSIG)
218# define EV_NSIG (NSIG)
219#elif defined(_NSIG)
220# define EV_NSIG (_NSIG)
221#elif defined (SIGMAX)
222# define EV_NSIG (SIGMAX+1)
223#elif defined (SIG_MAX)
224# define EV_NSIG (SIG_MAX+1)
225#elif defined (_SIG_MAX)
226# define EV_NSIG (_SIG_MAX+1)
227#elif defined (MAXSIG)
228# define EV_NSIG (MAXSIG+1)
229#elif defined (MAX_SIG)
230# define EV_NSIG (MAX_SIG+1)
231#elif defined (SIGARRAYSIZE)
232# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
233#elif defined (_sys_nsig)
234# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
235#else
236# error "unable to find value for NSIG, please report"
237/* to make it compile regardless, just remove the above line, */
238/* but consider reporting it, too! :) */
239# define EV_NSIG 65
240#endif
241
242#ifndef EV_USE_FLOOR
243# define EV_USE_FLOOR 0
244#endif
182 245
183#ifndef EV_USE_CLOCK_SYSCALL 246#ifndef EV_USE_CLOCK_SYSCALL
184# if __linux && __GLIBC__ >= 2 247# if __linux && __GLIBC__ >= 2
185# define EV_USE_CLOCK_SYSCALL 1 248# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
186# else 249# else
187# define EV_USE_CLOCK_SYSCALL 0 250# define EV_USE_CLOCK_SYSCALL 0
188# endif 251# endif
189#endif 252#endif
190 253
191#ifndef EV_USE_MONOTONIC 254#ifndef EV_USE_MONOTONIC
192# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 255# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
193# define EV_USE_MONOTONIC 1 256# define EV_USE_MONOTONIC EV_FEATURE_OS
194# else 257# else
195# define EV_USE_MONOTONIC 0 258# define EV_USE_MONOTONIC 0
196# endif 259# endif
197#endif 260#endif
198 261
… …
200# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 263# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
201#endif 264#endif
202 265
203#ifndef EV_USE_NANOSLEEP 266#ifndef EV_USE_NANOSLEEP
204# if _POSIX_C_SOURCE >= 199309L 267# if _POSIX_C_SOURCE >= 199309L
205# define EV_USE_NANOSLEEP 1 268# define EV_USE_NANOSLEEP EV_FEATURE_OS
206# else 269# else
207# define EV_USE_NANOSLEEP 0 270# define EV_USE_NANOSLEEP 0
208# endif 271# endif
209#endif 272#endif
210 273
211#ifndef EV_USE_SELECT 274#ifndef EV_USE_SELECT
212# define EV_USE_SELECT 1 275# define EV_USE_SELECT EV_FEATURE_BACKENDS
213#endif 276#endif
214 277
215#ifndef EV_USE_POLL 278#ifndef EV_USE_POLL
216# ifdef _WIN32 279# ifdef _WIN32
217# define EV_USE_POLL 0 280# define EV_USE_POLL 0
218# else 281# else
219# define EV_USE_POLL 1 282# define EV_USE_POLL EV_FEATURE_BACKENDS
220# endif 283# endif
221#endif 284#endif
222 285
223#ifndef EV_USE_EPOLL 286#ifndef EV_USE_EPOLL
224# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 287# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
225# define EV_USE_EPOLL 1 288# define EV_USE_EPOLL EV_FEATURE_BACKENDS
226# else 289# else
227# define EV_USE_EPOLL 0 290# define EV_USE_EPOLL 0
228# endif 291# endif
229#endif 292#endif
230 293
… …
236# define EV_USE_PORT 0 299# define EV_USE_PORT 0
237#endif 300#endif
238 301
239#ifndef EV_USE_INOTIFY 302#ifndef EV_USE_INOTIFY
240# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 303# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
241# define EV_USE_INOTIFY 1 304# define EV_USE_INOTIFY EV_FEATURE_OS
242# else 305# else
243# define EV_USE_INOTIFY 0 306# define EV_USE_INOTIFY 0
244# endif 307# endif
245#endif 308#endif
246 309
247#ifndef EV_PID_HASHSIZE 310#ifndef EV_PID_HASHSIZE
248# if EV_MINIMAL 311# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
249# define EV_PID_HASHSIZE 1
250# else
251# define EV_PID_HASHSIZE 16
252# endif
253#endif 312#endif
254 313
255#ifndef EV_INOTIFY_HASHSIZE 314#ifndef EV_INOTIFY_HASHSIZE
256# if EV_MINIMAL 315# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
257# define EV_INOTIFY_HASHSIZE 1
258# else
259# define EV_INOTIFY_HASHSIZE 16
260# endif
261#endif 316#endif
262 317
263#ifndef EV_USE_EVENTFD 318#ifndef EV_USE_EVENTFD
264# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 319# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
265# define EV_USE_EVENTFD 1 320# define EV_USE_EVENTFD EV_FEATURE_OS
266# else 321# else
267# define EV_USE_EVENTFD 0 322# define EV_USE_EVENTFD 0
323# endif
324#endif
325
326#ifndef EV_USE_SIGNALFD
327# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
328# define EV_USE_SIGNALFD EV_FEATURE_OS
329# else
330# define EV_USE_SIGNALFD 0
268# endif 331# endif
269#endif 332#endif
270 333
271#if 0 /* debugging */ 334#if 0 /* debugging */
272# define EV_VERIFY 3 335# define EV_VERIFY 3
273# define EV_USE_4HEAP 1 336# define EV_USE_4HEAP 1
274# define EV_HEAP_CACHE_AT 1 337# define EV_HEAP_CACHE_AT 1
275#endif 338#endif
276 339
277#ifndef EV_VERIFY 340#ifndef EV_VERIFY
278# define EV_VERIFY !EV_MINIMAL 341# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
279#endif 342#endif
280 343
281#ifndef EV_USE_4HEAP 344#ifndef EV_USE_4HEAP
282# define EV_USE_4HEAP !EV_MINIMAL 345# define EV_USE_4HEAP EV_FEATURE_DATA
283#endif 346#endif
284 347
285#ifndef EV_HEAP_CACHE_AT 348#ifndef EV_HEAP_CACHE_AT
286# define EV_HEAP_CACHE_AT !EV_MINIMAL 349# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
287#endif 350#endif
288 351
289/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 352/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
290/* which makes programs even slower. might work on other unices, too. */ 353/* which makes programs even slower. might work on other unices, too. */
291#if EV_USE_CLOCK_SYSCALL 354#if EV_USE_CLOCK_SYSCALL
… …
300# endif 363# endif
301#endif 364#endif
302 365
303/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 366/* this block fixes any misconfiguration where we know we run into trouble otherwise */
304 367
368#ifdef _AIX
369/* AIX has a completely broken poll.h header */
370# undef EV_USE_POLL
371# define EV_USE_POLL 0
372#endif
373
305#ifndef CLOCK_MONOTONIC 374#ifndef CLOCK_MONOTONIC
306# undef EV_USE_MONOTONIC 375# undef EV_USE_MONOTONIC
307# define EV_USE_MONOTONIC 0 376# define EV_USE_MONOTONIC 0
308#endif 377#endif
309 378
… …
316# undef EV_USE_INOTIFY 385# undef EV_USE_INOTIFY
317# define EV_USE_INOTIFY 0 386# define EV_USE_INOTIFY 0
318#endif 387#endif
319 388
320#if !EV_USE_NANOSLEEP 389#if !EV_USE_NANOSLEEP
321# ifndef _WIN32 390/* hp-ux has it in sys/time.h, which we unconditionally include above */
391# if !defined(_WIN32) && !defined(__hpux)
322# include <sys/select.h> 392# include <sys/select.h>
323# endif 393# endif
324#endif 394#endif
325 395
326#if EV_USE_INOTIFY 396#if EV_USE_INOTIFY
327# include <sys/utsname.h>
328# include <sys/statfs.h> 397# include <sys/statfs.h>
329# include <sys/inotify.h> 398# include <sys/inotify.h>
330/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 399/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
331# ifndef IN_DONT_FOLLOW 400# ifndef IN_DONT_FOLLOW
332# undef EV_USE_INOTIFY 401# undef EV_USE_INOTIFY
… …
339#endif 408#endif
340 409
341#if EV_USE_EVENTFD 410#if EV_USE_EVENTFD
342/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 411/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
343# include <stdint.h> 412# include <stdint.h>
344# ifdef __cplusplus 413# ifndef EFD_NONBLOCK
345extern "C" { 414# define EFD_NONBLOCK O_NONBLOCK
346# endif 415# endif
347int eventfd (unsigned int initval, int flags); 416# ifndef EFD_CLOEXEC
348# ifdef __cplusplus 417# ifdef O_CLOEXEC
349} 418# define EFD_CLOEXEC O_CLOEXEC
419# else
420# define EFD_CLOEXEC 02000000
421# endif
350# endif 422# endif
423EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
424#endif
425
426#if EV_USE_SIGNALFD
427/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
428# include <stdint.h>
429# ifndef SFD_NONBLOCK
430# define SFD_NONBLOCK O_NONBLOCK
431# endif
432# ifndef SFD_CLOEXEC
433# ifdef O_CLOEXEC
434# define SFD_CLOEXEC O_CLOEXEC
435# else
436# define SFD_CLOEXEC 02000000
437# endif
438# endif
439EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
440
441struct signalfd_siginfo
442{
443 uint32_t ssi_signo;
444 char pad[128 - sizeof (uint32_t)];
445};
351#endif 446#endif
352 447
353/**/ 448/**/
354 449
355#if EV_VERIFY >= 3 450#if EV_VERIFY >= 3
356# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 451# define EV_FREQUENT_CHECK ev_verify (EV_A)
357#else 452#else
358# define EV_FREQUENT_CHECK do { } while (0) 453# define EV_FREQUENT_CHECK do { } while (0)
359#endif 454#endif
360 455
361/* 456/*
362 * This is used to avoid floating point rounding problems. 457 * This is used to work around floating point rounding problems.
363 * It is added to ev_rt_now when scheduling periodics
364 * to ensure progress, time-wise, even when rounding
365 * errors are against us.
366 * This value is good at least till the year 4000. 458 * This value is good at least till the year 4000.
367 * Better solutions welcome.
368 */ 459 */
369#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 460#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
461/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
370 462
371#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 463#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
372#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 464#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
373/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */ 465
466#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
467#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
374 468
375#if __GNUC__ >= 4 469#if __GNUC__ >= 4
376# define expect(expr,value) __builtin_expect ((expr),(value)) 470# define expect(expr,value) __builtin_expect ((expr),(value))
377# define noinline __attribute__ ((noinline)) 471# define noinline __attribute__ ((noinline))
378#else 472#else
… …
385 479
386#define expect_false(expr) expect ((expr) != 0, 0) 480#define expect_false(expr) expect ((expr) != 0, 0)
387#define expect_true(expr) expect ((expr) != 0, 1) 481#define expect_true(expr) expect ((expr) != 0, 1)
388#define inline_size static inline 482#define inline_size static inline
389 483
390#if EV_MINIMAL 484#if EV_FEATURE_CODE
485# define inline_speed static inline
486#else
391# define inline_speed static noinline 487# define inline_speed static noinline
392#else
393# define inline_speed static inline
394#endif 488#endif
395 489
396#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 490#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
397 491
398#if EV_MINPRI == EV_MAXPRI 492#if EV_MINPRI == EV_MAXPRI
… …
411#define ev_active(w) ((W)(w))->active 505#define ev_active(w) ((W)(w))->active
412#define ev_at(w) ((WT)(w))->at 506#define ev_at(w) ((WT)(w))->at
413 507
414#if EV_USE_REALTIME 508#if EV_USE_REALTIME
415/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 509/* sig_atomic_t is used to avoid per-thread variables or locking but still */
416/* giving it a reasonably high chance of working on typical architetcures */ 510/* giving it a reasonably high chance of working on typical architectures */
417static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 511static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
418#endif 512#endif
419 513
420#if EV_USE_MONOTONIC 514#if EV_USE_MONOTONIC
421static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 515static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
422#endif 516#endif
423 517
518#ifndef EV_FD_TO_WIN32_HANDLE
519# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
520#endif
521#ifndef EV_WIN32_HANDLE_TO_FD
522# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
523#endif
524#ifndef EV_WIN32_CLOSE_FD
525# define EV_WIN32_CLOSE_FD(fd) close (fd)
526#endif
527
424#ifdef _WIN32 528#ifdef _WIN32
425# include "ev_win32.c" 529# include "ev_win32.c"
426#endif 530#endif
427 531
428/*****************************************************************************/ 532/*****************************************************************************/
533
534/* define a suitable floor function (only used by periodics atm) */
535
536#if EV_USE_FLOOR
537# include <math.h>
538# define ev_floor(v) floor (v)
539#else
540
541#include <float.h>
542
543/* a floor() replacement function, should be independent of ev_tstamp type */
544static ev_tstamp noinline
545ev_floor (ev_tstamp v)
546{
547 /* the choice of shift factor is not terribly important */
548#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
549 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
550#else
551 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
552#endif
553
554 /* argument too large for an unsigned long? */
555 if (expect_false (v >= shift))
556 {
557 ev_tstamp f;
558
559 if (v == v - 1.)
560 return v; /* very large number */
561
562 f = shift * ev_floor (v * (1. / shift));
563 return f + ev_floor (v - f);
564 }
565
566 /* special treatment for negative args? */
567 if (expect_false (v < 0.))
568 {
569 ev_tstamp f = -ev_floor (-v);
570
571 return f - (f == v ? 0 : 1);
572 }
573
574 /* fits into an unsigned long */
575 return (unsigned long)v;
576}
577
578#endif
579
580/*****************************************************************************/
581
582#ifdef __linux
583# include <sys/utsname.h>
584#endif
585
586static unsigned int noinline
587ev_linux_version (void)
588{
589#ifdef __linux
590 unsigned int v = 0;
591 struct utsname buf;
592 int i;
593 char *p = buf.release;
594
595 if (uname (&buf))
596 return 0;
597
598 for (i = 3+1; --i; )
599 {
600 unsigned int c = 0;
601
602 for (;;)
603 {
604 if (*p >= '0' && *p <= '9')
605 c = c * 10 + *p++ - '0';
606 else
607 {
608 p += *p == '.';
609 break;
610 }
611 }
612
613 v = (v << 8) | c;
614 }
615
616 return v;
617#else
618 return 0;
619#endif
620}
621
622/*****************************************************************************/
623
624#if EV_AVOID_STDIO
625static void noinline
626ev_printerr (const char *msg)
627{
628 write (STDERR_FILENO, msg, strlen (msg));
629}
630#endif
429 631
430static void (*syserr_cb)(const char *msg); 632static void (*syserr_cb)(const char *msg);
431 633
432void 634void
433ev_set_syserr_cb (void (*cb)(const char *msg)) 635ev_set_syserr_cb (void (*cb)(const char *msg))
… …
443 645
444 if (syserr_cb) 646 if (syserr_cb)
445 syserr_cb (msg); 647 syserr_cb (msg);
446 else 648 else
447 { 649 {
650#if EV_AVOID_STDIO
651 ev_printerr (msg);
652 ev_printerr (": ");
653 ev_printerr (strerror (errno));
654 ev_printerr ("\n");
655#else
448 perror (msg); 656 perror (msg);
657#endif
449 abort (); 658 abort ();
450 } 659 }
451} 660}
452 661
453static void * 662static void *
454ev_realloc_emul (void *ptr, long size) 663ev_realloc_emul (void *ptr, long size)
455{ 664{
665#if __GLIBC__
666 return realloc (ptr, size);
667#else
456 /* some systems, notably openbsd and darwin, fail to properly 668 /* some systems, notably openbsd and darwin, fail to properly
457 * implement realloc (x, 0) (as required by both ansi c-98 and 669 * implement realloc (x, 0) (as required by both ansi c-89 and
458 * the single unix specification, so work around them here. 670 * the single unix specification, so work around them here.
459 */ 671 */
460 672
461 if (size) 673 if (size)
462 return realloc (ptr, size); 674 return realloc (ptr, size);
463 675
464 free (ptr); 676 free (ptr);
465 return 0; 677 return 0;
678#endif
466} 679}
467 680
468static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 681static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
469 682
470void 683void
… …
478{ 691{
479 ptr = alloc (ptr, size); 692 ptr = alloc (ptr, size);
480 693
481 if (!ptr && size) 694 if (!ptr && size)
482 { 695 {
696#if EV_AVOID_STDIO
697 ev_printerr ("(libev) memory allocation failed, aborting.\n");
698#else
483 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 699 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
700#endif
484 abort (); 701 abort ();
485 } 702 }
486 703
487 return ptr; 704 return ptr;
488} 705}
… …
504 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 721 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
505 unsigned char unused; 722 unsigned char unused;
506#if EV_USE_EPOLL 723#if EV_USE_EPOLL
507 unsigned int egen; /* generation counter to counter epoll bugs */ 724 unsigned int egen; /* generation counter to counter epoll bugs */
508#endif 725#endif
509#if EV_SELECT_IS_WINSOCKET 726#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
510 SOCKET handle; 727 SOCKET handle;
728#endif
729#if EV_USE_IOCP
730 OVERLAPPED or, ow;
511#endif 731#endif
512} ANFD; 732} ANFD;
513 733
514/* stores the pending event set for a given watcher */ 734/* stores the pending event set for a given watcher */
515typedef struct 735typedef struct
… …
570 790
571 static int ev_default_loop_ptr; 791 static int ev_default_loop_ptr;
572 792
573#endif 793#endif
574 794
575#if EV_MINIMAL < 2 795#if EV_FEATURE_API
576# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 796# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
577# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 797# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
578# define EV_INVOKE_PENDING invoke_cb (EV_A) 798# define EV_INVOKE_PENDING invoke_cb (EV_A)
579#else 799#else
580# define EV_RELEASE_CB (void)0 800# define EV_RELEASE_CB (void)0
581# define EV_ACQUIRE_CB (void)0 801# define EV_ACQUIRE_CB (void)0
582# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 802# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
583#endif 803#endif
584 804
585#define EVUNLOOP_RECURSE 0x80 805#define EVBREAK_RECURSE 0x80
586 806
587/*****************************************************************************/ 807/*****************************************************************************/
588 808
589#ifndef EV_HAVE_EV_TIME 809#ifndef EV_HAVE_EV_TIME
590ev_tstamp 810ev_tstamp
… …
634 if (delay > 0.) 854 if (delay > 0.)
635 { 855 {
636#if EV_USE_NANOSLEEP 856#if EV_USE_NANOSLEEP
637 struct timespec ts; 857 struct timespec ts;
638 858
639 ts.tv_sec = (time_t)delay; 859 EV_TS_SET (ts, delay);
640 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
641
642 nanosleep (&ts, 0); 860 nanosleep (&ts, 0);
643#elif defined(_WIN32) 861#elif defined(_WIN32)
644 Sleep ((unsigned long)(delay * 1e3)); 862 Sleep ((unsigned long)(delay * 1e3));
645#else 863#else
646 struct timeval tv; 864 struct timeval tv;
647 865
648 tv.tv_sec = (time_t)delay;
649 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
650
651 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 866 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
652 /* something not guaranteed by newer posix versions, but guaranteed */ 867 /* something not guaranteed by newer posix versions, but guaranteed */
653 /* by older ones */ 868 /* by older ones */
869 EV_TV_SET (tv, delay);
654 select (0, 0, 0, 0, &tv); 870 select (0, 0, 0, 0, &tv);
655#endif 871#endif
656 } 872 }
657} 873}
658 874
659/*****************************************************************************/ 875/*****************************************************************************/
660 876
661#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 877#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
662 878
663/* find a suitable new size for the given array, */ 879/* find a suitable new size for the given array, */
664/* hopefully by rounding to a ncie-to-malloc size */ 880/* hopefully by rounding to a nice-to-malloc size */
665inline_size int 881inline_size int
666array_nextsize (int elem, int cur, int cnt) 882array_nextsize (int elem, int cur, int cnt)
667{ 883{
668 int ncur = cur + 1; 884 int ncur = cur + 1;
669 885
… …
765} 981}
766 982
767/*****************************************************************************/ 983/*****************************************************************************/
768 984
769inline_speed void 985inline_speed void
770fd_event_nc (EV_P_ int fd, int revents) 986fd_event_nocheck (EV_P_ int fd, int revents)
771{ 987{
772 ANFD *anfd = anfds + fd; 988 ANFD *anfd = anfds + fd;
773 ev_io *w; 989 ev_io *w;
774 990
775 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 991 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
787fd_event (EV_P_ int fd, int revents) 1003fd_event (EV_P_ int fd, int revents)
788{ 1004{
789 ANFD *anfd = anfds + fd; 1005 ANFD *anfd = anfds + fd;
790 1006
791 if (expect_true (!anfd->reify)) 1007 if (expect_true (!anfd->reify))
792 fd_event_nc (EV_A_ fd, revents); 1008 fd_event_nocheck (EV_A_ fd, revents);
793} 1009}
794 1010
795void 1011void
796ev_feed_fd_event (EV_P_ int fd, int revents) 1012ev_feed_fd_event (EV_P_ int fd, int revents)
797{ 1013{
798 if (fd >= 0 && fd < anfdmax) 1014 if (fd >= 0 && fd < anfdmax)
799 fd_event_nc (EV_A_ fd, revents); 1015 fd_event_nocheck (EV_A_ fd, revents);
800} 1016}
801 1017
802/* make sure the external fd watch events are in-sync */ 1018/* make sure the external fd watch events are in-sync */
803/* with the kernel/libev internal state */ 1019/* with the kernel/libev internal state */
804inline_size void 1020inline_size void
805fd_reify (EV_P) 1021fd_reify (EV_P)
806{ 1022{
807 int i; 1023 int i;
808 1024
1025#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1026 for (i = 0; i < fdchangecnt; ++i)
1027 {
1028 int fd = fdchanges [i];
1029 ANFD *anfd = anfds + fd;
1030
1031 if (anfd->reify & EV__IOFDSET && anfd->head)
1032 {
1033 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1034
1035 if (handle != anfd->handle)
1036 {
1037 unsigned long arg;
1038
1039 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1040
1041 /* handle changed, but fd didn't - we need to do it in two steps */
1042 backend_modify (EV_A_ fd, anfd->events, 0);
1043 anfd->events = 0;
1044 anfd->handle = handle;
1045 }
1046 }
1047 }
1048#endif
1049
809 for (i = 0; i < fdchangecnt; ++i) 1050 for (i = 0; i < fdchangecnt; ++i)
810 { 1051 {
811 int fd = fdchanges [i]; 1052 int fd = fdchanges [i];
812 ANFD *anfd = anfds + fd; 1053 ANFD *anfd = anfds + fd;
813 ev_io *w; 1054 ev_io *w;
814 1055
815 unsigned char events = 0; 1056 unsigned char o_events = anfd->events;
1057 unsigned char o_reify = anfd->reify;
816 1058
817 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1059 anfd->reify = 0;
818 events |= (unsigned char)w->events;
819 1060
820#if EV_SELECT_IS_WINSOCKET 1061 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
821 if (events)
822 { 1062 {
823 unsigned long arg; 1063 anfd->events = 0;
824 #ifdef EV_FD_TO_WIN32_HANDLE 1064
825 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1065 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
826 #else 1066 anfd->events |= (unsigned char)w->events;
827 anfd->handle = _get_osfhandle (fd); 1067
828 #endif 1068 if (o_events != anfd->events)
829 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1069 o_reify = EV__IOFDSET; /* actually |= */
830 } 1070 }
831#endif
832 1071
833 { 1072 if (o_reify & EV__IOFDSET)
834 unsigned char o_events = anfd->events;
835 unsigned char o_reify = anfd->reify;
836
837 anfd->reify = 0;
838 anfd->events = events;
839
840 if (o_events != events || o_reify & EV__IOFDSET)
841 backend_modify (EV_A_ fd, o_events, events); 1073 backend_modify (EV_A_ fd, o_events, anfd->events);
842 }
843 } 1074 }
844 1075
845 fdchangecnt = 0; 1076 fdchangecnt = 0;
846} 1077}
847 1078
… …
871 ev_io_stop (EV_A_ w); 1102 ev_io_stop (EV_A_ w);
872 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1103 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
873 } 1104 }
874} 1105}
875 1106
876/* check whether the given fd is atcually valid, for error recovery */ 1107/* check whether the given fd is actually valid, for error recovery */
877inline_size int 1108inline_size int
878fd_valid (int fd) 1109fd_valid (int fd)
879{ 1110{
880#ifdef _WIN32 1111#ifdef _WIN32
881 return _get_osfhandle (fd) != -1; 1112 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
882#else 1113#else
883 return fcntl (fd, F_GETFD) != -1; 1114 return fcntl (fd, F_GETFD) != -1;
884#endif 1115#endif
885} 1116}
886 1117
… …
904 1135
905 for (fd = anfdmax; fd--; ) 1136 for (fd = anfdmax; fd--; )
906 if (anfds [fd].events) 1137 if (anfds [fd].events)
907 { 1138 {
908 fd_kill (EV_A_ fd); 1139 fd_kill (EV_A_ fd);
909 return; 1140 break;
910 } 1141 }
911} 1142}
912 1143
913/* usually called after fork if backend needs to re-arm all fds from scratch */ 1144/* usually called after fork if backend needs to re-arm all fds from scratch */
914static void noinline 1145static void noinline
… …
923 anfds [fd].emask = 0; 1154 anfds [fd].emask = 0;
924 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 1155 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
925 } 1156 }
926} 1157}
927 1158
1159/* used to prepare libev internal fd's */
1160/* this is not fork-safe */
1161inline_speed void
1162fd_intern (int fd)
1163{
1164#ifdef _WIN32
1165 unsigned long arg = 1;
1166 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1167#else
1168 fcntl (fd, F_SETFD, FD_CLOEXEC);
1169 fcntl (fd, F_SETFL, O_NONBLOCK);
1170#endif
1171}
1172
928/*****************************************************************************/ 1173/*****************************************************************************/
929 1174
930/* 1175/*
931 * the heap functions want a real array index. array index 0 uis guaranteed to not 1176 * the heap functions want a real array index. array index 0 is guaranteed to not
932 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1177 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
933 * the branching factor of the d-tree. 1178 * the branching factor of the d-tree.
934 */ 1179 */
935 1180
936/* 1181/*
… …
1004 1249
1005 for (;;) 1250 for (;;)
1006 { 1251 {
1007 int c = k << 1; 1252 int c = k << 1;
1008 1253
1009 if (c > N + HEAP0 - 1) 1254 if (c >= N + HEAP0)
1010 break; 1255 break;
1011 1256
1012 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1257 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
1013 ? 1 : 0; 1258 ? 1 : 0;
1014 1259
… …
1050 1295
1051/* move an element suitably so it is in a correct place */ 1296/* move an element suitably so it is in a correct place */
1052inline_size void 1297inline_size void
1053adjustheap (ANHE *heap, int N, int k) 1298adjustheap (ANHE *heap, int N, int k)
1054{ 1299{
1055 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1300 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1056 upheap (heap, k); 1301 upheap (heap, k);
1057 else 1302 else
1058 downheap (heap, N, k); 1303 downheap (heap, N, k);
1059} 1304}
1060 1305
… …
1073/*****************************************************************************/ 1318/*****************************************************************************/
1074 1319
1075/* associate signal watchers to a signal signal */ 1320/* associate signal watchers to a signal signal */
1076typedef struct 1321typedef struct
1077{ 1322{
1323 EV_ATOMIC_T pending;
1324#if EV_MULTIPLICITY
1325 EV_P;
1326#endif
1078 WL head; 1327 WL head;
1079 EV_ATOMIC_T gotsig;
1080} ANSIG; 1328} ANSIG;
1081 1329
1082static ANSIG *signals; 1330static ANSIG signals [EV_NSIG - 1];
1083static int signalmax;
1084
1085static EV_ATOMIC_T gotsig;
1086 1331
1087/*****************************************************************************/ 1332/*****************************************************************************/
1088 1333
1089/* used to prepare libev internal fd's */ 1334#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1090/* this is not fork-safe */
1091inline_speed void
1092fd_intern (int fd)
1093{
1094#ifdef _WIN32
1095 unsigned long arg = 1;
1096 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1097#else
1098 fcntl (fd, F_SETFD, FD_CLOEXEC);
1099 fcntl (fd, F_SETFL, O_NONBLOCK);
1100#endif
1101}
1102 1335
1103static void noinline 1336static void noinline
1104evpipe_init (EV_P) 1337evpipe_init (EV_P)
1105{ 1338{
1106 if (!ev_is_active (&pipe_w)) 1339 if (!ev_is_active (&pipe_w))
1107 { 1340 {
1108#if EV_USE_EVENTFD 1341# if EV_USE_EVENTFD
1342 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1343 if (evfd < 0 && errno == EINVAL)
1109 if ((evfd = eventfd (0, 0)) >= 0) 1344 evfd = eventfd (0, 0);
1345
1346 if (evfd >= 0)
1110 { 1347 {
1111 evpipe [0] = -1; 1348 evpipe [0] = -1;
1112 fd_intern (evfd); 1349 fd_intern (evfd); /* doing it twice doesn't hurt */
1113 ev_io_set (&pipe_w, evfd, EV_READ); 1350 ev_io_set (&pipe_w, evfd, EV_READ);
1114 } 1351 }
1115 else 1352 else
1116#endif 1353# endif
1117 { 1354 {
1118 while (pipe (evpipe)) 1355 while (pipe (evpipe))
1119 ev_syserr ("(libev) error creating signal/async pipe"); 1356 ev_syserr ("(libev) error creating signal/async pipe");
1120 1357
1121 fd_intern (evpipe [0]); 1358 fd_intern (evpipe [0]);
… …
1131inline_size void 1368inline_size void
1132evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1369evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1133{ 1370{
1134 if (!*flag) 1371 if (!*flag)
1135 { 1372 {
1136 int old_errno = errno; /* save errno because write might clobber it */
1137
1138 *flag = 1; 1373 *flag = 1;
1139 1374
1375 pipe_write_skipped = 1;
1376
1377 if (pipe_write_wanted)
1378 {
1379 int old_errno = errno; /* save errno because write will clobber it */
1380 char dummy;
1381
1382 pipe_write_skipped = 0;
1383
1140#if EV_USE_EVENTFD 1384#if EV_USE_EVENTFD
1141 if (evfd >= 0) 1385 if (evfd >= 0)
1142 { 1386 {
1143 uint64_t counter = 1; 1387 uint64_t counter = 1;
1144 write (evfd, &counter, sizeof (uint64_t)); 1388 write (evfd, &counter, sizeof (uint64_t));
1389 }
1390 else
1391#endif
1392 {
1393 /* win32 people keep sending patches that change this write() to send() */
1394 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1395 /* so when you think this write should be a send instead, please find out */
1396 /* where your send() is from - it's definitely not the microsoft send, and */
1397 /* tell me. thank you. */
1398 write (evpipe [1], &dummy, 1);
1399 }
1400
1401 errno = old_errno;
1145 } 1402 }
1146 else
1147#endif
1148 write (evpipe [1], &old_errno, 1);
1149
1150 errno = old_errno;
1151 } 1403 }
1152} 1404}
1153 1405
1154/* called whenever the libev signal pipe */ 1406/* called whenever the libev signal pipe */
1155/* got some events (signal, async) */ 1407/* got some events (signal, async) */
1156static void 1408static void
1157pipecb (EV_P_ ev_io *iow, int revents) 1409pipecb (EV_P_ ev_io *iow, int revents)
1158{ 1410{
1411 int i;
1412
1413 if (revents & EV_READ)
1414 {
1159#if EV_USE_EVENTFD 1415#if EV_USE_EVENTFD
1160 if (evfd >= 0) 1416 if (evfd >= 0)
1161 { 1417 {
1162 uint64_t counter; 1418 uint64_t counter;
1163 read (evfd, &counter, sizeof (uint64_t)); 1419 read (evfd, &counter, sizeof (uint64_t));
1164 } 1420 }
1165 else 1421 else
1166#endif 1422#endif
1167 { 1423 {
1168 char dummy; 1424 char dummy;
1425 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1169 read (evpipe [0], &dummy, 1); 1426 read (evpipe [0], &dummy, 1);
1427 }
1428 }
1429
1430 pipe_write_skipped = 0;
1431
1432#if EV_SIGNAL_ENABLE
1433 if (sig_pending)
1170 } 1434 {
1435 sig_pending = 0;
1171 1436
1172 if (gotsig && ev_is_default_loop (EV_A)) 1437 for (i = EV_NSIG - 1; i--; )
1173 { 1438 if (expect_false (signals [i].pending))
1174 int signum;
1175 gotsig = 0;
1176
1177 for (signum = signalmax; signum--; )
1178 if (signals [signum].gotsig)
1179 ev_feed_signal_event (EV_A_ signum + 1); 1439 ev_feed_signal_event (EV_A_ i + 1);
1180 } 1440 }
1441#endif
1181 1442
1182#if EV_ASYNC_ENABLE 1443#if EV_ASYNC_ENABLE
1183 if (gotasync) 1444 if (async_pending)
1184 { 1445 {
1185 int i; 1446 async_pending = 0;
1186 gotasync = 0;
1187 1447
1188 for (i = asynccnt; i--; ) 1448 for (i = asynccnt; i--; )
1189 if (asyncs [i]->sent) 1449 if (asyncs [i]->sent)
1190 { 1450 {
1191 asyncs [i]->sent = 0; 1451 asyncs [i]->sent = 0;
… …
1195#endif 1455#endif
1196} 1456}
1197 1457
1198/*****************************************************************************/ 1458/*****************************************************************************/
1199 1459
1460void
1461ev_feed_signal (int signum)
1462{
1463#if EV_MULTIPLICITY
1464 EV_P = signals [signum - 1].loop;
1465
1466 if (!EV_A)
1467 return;
1468#endif
1469
1470 evpipe_init (EV_A);
1471
1472 signals [signum - 1].pending = 1;
1473 evpipe_write (EV_A_ &sig_pending);
1474}
1475
1200static void 1476static void
1201ev_sighandler (int signum) 1477ev_sighandler (int signum)
1202{ 1478{
1203#if EV_MULTIPLICITY
1204 struct ev_loop *loop = &default_loop_struct;
1205#endif
1206
1207#if _WIN32 1479#ifdef _WIN32
1208 signal (signum, ev_sighandler); 1480 signal (signum, ev_sighandler);
1209#endif 1481#endif
1210 1482
1211 signals [signum - 1].gotsig = 1; 1483 ev_feed_signal (signum);
1212 evpipe_write (EV_A_ &gotsig);
1213} 1484}
1214 1485
1215void noinline 1486void noinline
1216ev_feed_signal_event (EV_P_ int signum) 1487ev_feed_signal_event (EV_P_ int signum)
1217{ 1488{
1218 WL w; 1489 WL w;
1219 1490
1491 if (expect_false (signum <= 0 || signum > EV_NSIG))
1492 return;
1493
1494 --signum;
1495
1220#if EV_MULTIPLICITY 1496#if EV_MULTIPLICITY
1221 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1497 /* it is permissible to try to feed a signal to the wrong loop */
1222#endif 1498 /* or, likely more useful, feeding a signal nobody is waiting for */
1223 1499
1224 --signum; 1500 if (expect_false (signals [signum].loop != EV_A))
1225
1226 if (signum < 0 || signum >= signalmax)
1227 return; 1501 return;
1502#endif
1228 1503
1229 signals [signum].gotsig = 0; 1504 signals [signum].pending = 0;
1230 1505
1231 for (w = signals [signum].head; w; w = w->next) 1506 for (w = signals [signum].head; w; w = w->next)
1232 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1507 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1233} 1508}
1234 1509
1510#if EV_USE_SIGNALFD
1511static void
1512sigfdcb (EV_P_ ev_io *iow, int revents)
1513{
1514 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1515
1516 for (;;)
1517 {
1518 ssize_t res = read (sigfd, si, sizeof (si));
1519
1520 /* not ISO-C, as res might be -1, but works with SuS */
1521 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1522 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1523
1524 if (res < (ssize_t)sizeof (si))
1525 break;
1526 }
1527}
1528#endif
1529
1530#endif
1531
1235/*****************************************************************************/ 1532/*****************************************************************************/
1236 1533
1534#if EV_CHILD_ENABLE
1237static WL childs [EV_PID_HASHSIZE]; 1535static WL childs [EV_PID_HASHSIZE];
1238
1239#ifndef _WIN32
1240 1536
1241static ev_signal childev; 1537static ev_signal childev;
1242 1538
1243#ifndef WIFCONTINUED 1539#ifndef WIFCONTINUED
1244# define WIFCONTINUED(status) 0 1540# define WIFCONTINUED(status) 0
… …
1249child_reap (EV_P_ int chain, int pid, int status) 1545child_reap (EV_P_ int chain, int pid, int status)
1250{ 1546{
1251 ev_child *w; 1547 ev_child *w;
1252 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1548 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1253 1549
1254 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1550 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1255 { 1551 {
1256 if ((w->pid == pid || !w->pid) 1552 if ((w->pid == pid || !w->pid)
1257 && (!traced || (w->flags & 1))) 1553 && (!traced || (w->flags & 1)))
1258 { 1554 {
1259 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1555 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1284 /* make sure we are called again until all children have been reaped */ 1580 /* make sure we are called again until all children have been reaped */
1285 /* we need to do it this way so that the callback gets called before we continue */ 1581 /* we need to do it this way so that the callback gets called before we continue */
1286 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1582 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1287 1583
1288 child_reap (EV_A_ pid, pid, status); 1584 child_reap (EV_A_ pid, pid, status);
1289 if (EV_PID_HASHSIZE > 1) 1585 if ((EV_PID_HASHSIZE) > 1)
1290 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1586 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1291} 1587}
1292 1588
1293#endif 1589#endif
1294 1590
1295/*****************************************************************************/ 1591/*****************************************************************************/
1296 1592
1593#if EV_USE_IOCP
1594# include "ev_iocp.c"
1595#endif
1297#if EV_USE_PORT 1596#if EV_USE_PORT
1298# include "ev_port.c" 1597# include "ev_port.c"
1299#endif 1598#endif
1300#if EV_USE_KQUEUE 1599#if EV_USE_KQUEUE
1301# include "ev_kqueue.c" 1600# include "ev_kqueue.c"
… …
1361#ifdef __APPLE__ 1660#ifdef __APPLE__
1362 /* only select works correctly on that "unix-certified" platform */ 1661 /* only select works correctly on that "unix-certified" platform */
1363 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 1662 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1364 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 1663 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1365#endif 1664#endif
1665#ifdef __FreeBSD__
1666 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1667#endif
1366 1668
1367 return flags; 1669 return flags;
1368} 1670}
1369 1671
1370unsigned int 1672unsigned int
1371ev_embeddable_backends (void) 1673ev_embeddable_backends (void)
1372{ 1674{
1373 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1675 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1374 1676
1375 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 1677 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1376 /* please fix it and tell me how to detect the fix */ 1678 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1377 flags &= ~EVBACKEND_EPOLL; 1679 flags &= ~EVBACKEND_EPOLL;
1378 1680
1379 return flags; 1681 return flags;
1380} 1682}
1381 1683
1382unsigned int 1684unsigned int
1383ev_backend (EV_P) 1685ev_backend (EV_P)
1384{ 1686{
1385 return backend; 1687 return backend;
1386} 1688}
1387 1689
1388#if EV_MINIMAL < 2 1690#if EV_FEATURE_API
1389unsigned int 1691unsigned int
1390ev_loop_count (EV_P) 1692ev_iteration (EV_P)
1391{ 1693{
1392 return loop_count; 1694 return loop_count;
1393} 1695}
1394 1696
1395unsigned int 1697unsigned int
1396ev_loop_depth (EV_P) 1698ev_depth (EV_P)
1397{ 1699{
1398 return loop_depth; 1700 return loop_depth;
1399} 1701}
1400 1702
1401void 1703void
… …
1438static void noinline 1740static void noinline
1439loop_init (EV_P_ unsigned int flags) 1741loop_init (EV_P_ unsigned int flags)
1440{ 1742{
1441 if (!backend) 1743 if (!backend)
1442 { 1744 {
1745 origflags = flags;
1746
1443#if EV_USE_REALTIME 1747#if EV_USE_REALTIME
1444 if (!have_realtime) 1748 if (!have_realtime)
1445 { 1749 {
1446 struct timespec ts; 1750 struct timespec ts;
1447 1751
… …
1458 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1762 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1459 have_monotonic = 1; 1763 have_monotonic = 1;
1460 } 1764 }
1461#endif 1765#endif
1462 1766
1463 ev_rt_now = ev_time ();
1464 mn_now = get_clock ();
1465 now_floor = mn_now;
1466 rtmn_diff = ev_rt_now - mn_now;
1467#if EV_MINIMAL < 2
1468 invoke_cb = ev_invoke_pending;
1469#endif
1470
1471 io_blocktime = 0.;
1472 timeout_blocktime = 0.;
1473 backend = 0;
1474 backend_fd = -1;
1475 gotasync = 0;
1476#if EV_USE_INOTIFY
1477 fs_fd = -2;
1478#endif
1479
1480 /* pid check not overridable via env */ 1767 /* pid check not overridable via env */
1481#ifndef _WIN32 1768#ifndef _WIN32
1482 if (flags & EVFLAG_FORKCHECK) 1769 if (flags & EVFLAG_FORKCHECK)
1483 curpid = getpid (); 1770 curpid = getpid ();
1484#endif 1771#endif
… …
1486 if (!(flags & EVFLAG_NOENV) 1773 if (!(flags & EVFLAG_NOENV)
1487 && !enable_secure () 1774 && !enable_secure ()
1488 && getenv ("LIBEV_FLAGS")) 1775 && getenv ("LIBEV_FLAGS"))
1489 flags = atoi (getenv ("LIBEV_FLAGS")); 1776 flags = atoi (getenv ("LIBEV_FLAGS"));
1490 1777
1491 if (!(flags & 0x0000ffffU)) 1778 ev_rt_now = ev_time ();
1779 mn_now = get_clock ();
1780 now_floor = mn_now;
1781 rtmn_diff = ev_rt_now - mn_now;
1782#if EV_FEATURE_API
1783 invoke_cb = ev_invoke_pending;
1784#endif
1785
1786 io_blocktime = 0.;
1787 timeout_blocktime = 0.;
1788 backend = 0;
1789 backend_fd = -1;
1790 sig_pending = 0;
1791#if EV_ASYNC_ENABLE
1792 async_pending = 0;
1793#endif
1794 pipe_write_skipped = 0;
1795 pipe_write_wanted = 0;
1796#if EV_USE_INOTIFY
1797 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1798#endif
1799#if EV_USE_SIGNALFD
1800 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1801#endif
1802
1803 if (!(flags & EVBACKEND_MASK))
1492 flags |= ev_recommended_backends (); 1804 flags |= ev_recommended_backends ();
1493 1805
1806#if EV_USE_IOCP
1807 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1808#endif
1494#if EV_USE_PORT 1809#if EV_USE_PORT
1495 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1810 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1496#endif 1811#endif
1497#if EV_USE_KQUEUE 1812#if EV_USE_KQUEUE
1498 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1813 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1507 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1822 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1508#endif 1823#endif
1509 1824
1510 ev_prepare_init (&pending_w, pendingcb); 1825 ev_prepare_init (&pending_w, pendingcb);
1511 1826
1827#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1512 ev_init (&pipe_w, pipecb); 1828 ev_init (&pipe_w, pipecb);
1513 ev_set_priority (&pipe_w, EV_MAXPRI); 1829 ev_set_priority (&pipe_w, EV_MAXPRI);
1830#endif
1514 } 1831 }
1515} 1832}
1516 1833
1517/* free up a loop structure */ 1834/* free up a loop structure */
1518static void noinline 1835void
1519loop_destroy (EV_P) 1836ev_loop_destroy (EV_P)
1520{ 1837{
1521 int i; 1838 int i;
1522 1839
1840#if EV_MULTIPLICITY
1841 /* mimic free (0) */
1842 if (!EV_A)
1843 return;
1844#endif
1845
1846#if EV_CLEANUP_ENABLE
1847 /* queue cleanup watchers (and execute them) */
1848 if (expect_false (cleanupcnt))
1849 {
1850 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1851 EV_INVOKE_PENDING;
1852 }
1853#endif
1854
1855#if EV_CHILD_ENABLE
1856 if (ev_is_active (&childev))
1857 {
1858 ev_ref (EV_A); /* child watcher */
1859 ev_signal_stop (EV_A_ &childev);
1860 }
1861#endif
1862
1523 if (ev_is_active (&pipe_w)) 1863 if (ev_is_active (&pipe_w))
1524 { 1864 {
1525 ev_ref (EV_A); /* signal watcher */ 1865 /*ev_ref (EV_A);*/
1526 ev_io_stop (EV_A_ &pipe_w); 1866 /*ev_io_stop (EV_A_ &pipe_w);*/
1527 1867
1528#if EV_USE_EVENTFD 1868#if EV_USE_EVENTFD
1529 if (evfd >= 0) 1869 if (evfd >= 0)
1530 close (evfd); 1870 close (evfd);
1531#endif 1871#endif
1532 1872
1533 if (evpipe [0] >= 0) 1873 if (evpipe [0] >= 0)
1534 { 1874 {
1535 close (evpipe [0]); 1875 EV_WIN32_CLOSE_FD (evpipe [0]);
1536 close (evpipe [1]); 1876 EV_WIN32_CLOSE_FD (evpipe [1]);
1537 } 1877 }
1538 } 1878 }
1879
1880#if EV_USE_SIGNALFD
1881 if (ev_is_active (&sigfd_w))
1882 close (sigfd);
1883#endif
1539 1884
1540#if EV_USE_INOTIFY 1885#if EV_USE_INOTIFY
1541 if (fs_fd >= 0) 1886 if (fs_fd >= 0)
1542 close (fs_fd); 1887 close (fs_fd);
1543#endif 1888#endif
1544 1889
1545 if (backend_fd >= 0) 1890 if (backend_fd >= 0)
1546 close (backend_fd); 1891 close (backend_fd);
1547 1892
1893#if EV_USE_IOCP
1894 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1895#endif
1548#if EV_USE_PORT 1896#if EV_USE_PORT
1549 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1897 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1550#endif 1898#endif
1551#if EV_USE_KQUEUE 1899#if EV_USE_KQUEUE
1552 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 1900 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1567#if EV_IDLE_ENABLE 1915#if EV_IDLE_ENABLE
1568 array_free (idle, [i]); 1916 array_free (idle, [i]);
1569#endif 1917#endif
1570 } 1918 }
1571 1919
1572 ev_free (anfds); anfdmax = 0; 1920 ev_free (anfds); anfds = 0; anfdmax = 0;
1573 1921
1574 /* have to use the microsoft-never-gets-it-right macro */ 1922 /* have to use the microsoft-never-gets-it-right macro */
1575 array_free (rfeed, EMPTY); 1923 array_free (rfeed, EMPTY);
1576 array_free (fdchange, EMPTY); 1924 array_free (fdchange, EMPTY);
1577 array_free (timer, EMPTY); 1925 array_free (timer, EMPTY);
… …
1579 array_free (periodic, EMPTY); 1927 array_free (periodic, EMPTY);
1580#endif 1928#endif
1581#if EV_FORK_ENABLE 1929#if EV_FORK_ENABLE
1582 array_free (fork, EMPTY); 1930 array_free (fork, EMPTY);
1583#endif 1931#endif
1932#if EV_CLEANUP_ENABLE
1933 array_free (cleanup, EMPTY);
1934#endif
1584 array_free (prepare, EMPTY); 1935 array_free (prepare, EMPTY);
1585 array_free (check, EMPTY); 1936 array_free (check, EMPTY);
1586#if EV_ASYNC_ENABLE 1937#if EV_ASYNC_ENABLE
1587 array_free (async, EMPTY); 1938 array_free (async, EMPTY);
1588#endif 1939#endif
1589 1940
1590 backend = 0; 1941 backend = 0;
1942
1943#if EV_MULTIPLICITY
1944 if (ev_is_default_loop (EV_A))
1945#endif
1946 ev_default_loop_ptr = 0;
1947#if EV_MULTIPLICITY
1948 else
1949 ev_free (EV_A);
1950#endif
1591} 1951}
1592 1952
1593#if EV_USE_INOTIFY 1953#if EV_USE_INOTIFY
1594inline_size void infy_fork (EV_P); 1954inline_size void infy_fork (EV_P);
1595#endif 1955#endif
… …
1610 infy_fork (EV_A); 1970 infy_fork (EV_A);
1611#endif 1971#endif
1612 1972
1613 if (ev_is_active (&pipe_w)) 1973 if (ev_is_active (&pipe_w))
1614 { 1974 {
1615 /* this "locks" the handlers against writing to the pipe */ 1975 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1616 /* while we modify the fd vars */
1617 gotsig = 1;
1618#if EV_ASYNC_ENABLE
1619 gotasync = 1;
1620#endif
1621 1976
1622 ev_ref (EV_A); 1977 ev_ref (EV_A);
1623 ev_io_stop (EV_A_ &pipe_w); 1978 ev_io_stop (EV_A_ &pipe_w);
1624 1979
1625#if EV_USE_EVENTFD 1980#if EV_USE_EVENTFD
… …
1627 close (evfd); 1982 close (evfd);
1628#endif 1983#endif
1629 1984
1630 if (evpipe [0] >= 0) 1985 if (evpipe [0] >= 0)
1631 { 1986 {
1632 close (evpipe [0]); 1987 EV_WIN32_CLOSE_FD (evpipe [0]);
1633 close (evpipe [1]); 1988 EV_WIN32_CLOSE_FD (evpipe [1]);
1634 } 1989 }
1635 1990
1991#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1636 evpipe_init (EV_A); 1992 evpipe_init (EV_A);
1637 /* now iterate over everything, in case we missed something */ 1993 /* now iterate over everything, in case we missed something */
1638 pipecb (EV_A_ &pipe_w, EV_READ); 1994 pipecb (EV_A_ &pipe_w, EV_READ);
1995#endif
1639 } 1996 }
1640 1997
1641 postfork = 0; 1998 postfork = 0;
1642} 1999}
1643 2000
1644#if EV_MULTIPLICITY 2001#if EV_MULTIPLICITY
1645 2002
1646struct ev_loop * 2003struct ev_loop *
1647ev_loop_new (unsigned int flags) 2004ev_loop_new (unsigned int flags)
1648{ 2005{
1649 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2006 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1650 2007
1651 memset (loop, 0, sizeof (struct ev_loop)); 2008 memset (EV_A, 0, sizeof (struct ev_loop));
1652
1653 loop_init (EV_A_ flags); 2009 loop_init (EV_A_ flags);
1654 2010
1655 if (ev_backend (EV_A)) 2011 if (ev_backend (EV_A))
1656 return loop; 2012 return EV_A;
1657 2013
2014 ev_free (EV_A);
1658 return 0; 2015 return 0;
1659} 2016}
1660 2017
1661void
1662ev_loop_destroy (EV_P)
1663{
1664 loop_destroy (EV_A);
1665 ev_free (loop);
1666}
1667
1668void
1669ev_loop_fork (EV_P)
1670{
1671 postfork = 1; /* must be in line with ev_default_fork */
1672}
1673#endif /* multiplicity */ 2018#endif /* multiplicity */
1674 2019
1675#if EV_VERIFY 2020#if EV_VERIFY
1676static void noinline 2021static void noinline
1677verify_watcher (EV_P_ W w) 2022verify_watcher (EV_P_ W w)
… …
1706 verify_watcher (EV_A_ ws [cnt]); 2051 verify_watcher (EV_A_ ws [cnt]);
1707 } 2052 }
1708} 2053}
1709#endif 2054#endif
1710 2055
1711#if EV_MINIMAL < 2 2056#if EV_FEATURE_API
1712void 2057void
1713ev_loop_verify (EV_P) 2058ev_verify (EV_P)
1714{ 2059{
1715#if EV_VERIFY 2060#if EV_VERIFY
1716 int i; 2061 int i;
1717 WL w; 2062 WL w;
1718 2063
… …
1752#if EV_FORK_ENABLE 2097#if EV_FORK_ENABLE
1753 assert (forkmax >= forkcnt); 2098 assert (forkmax >= forkcnt);
1754 array_verify (EV_A_ (W *)forks, forkcnt); 2099 array_verify (EV_A_ (W *)forks, forkcnt);
1755#endif 2100#endif
1756 2101
2102#if EV_CLEANUP_ENABLE
2103 assert (cleanupmax >= cleanupcnt);
2104 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2105#endif
2106
1757#if EV_ASYNC_ENABLE 2107#if EV_ASYNC_ENABLE
1758 assert (asyncmax >= asynccnt); 2108 assert (asyncmax >= asynccnt);
1759 array_verify (EV_A_ (W *)asyncs, asynccnt); 2109 array_verify (EV_A_ (W *)asyncs, asynccnt);
1760#endif 2110#endif
1761 2111
2112#if EV_PREPARE_ENABLE
1762 assert (preparemax >= preparecnt); 2113 assert (preparemax >= preparecnt);
1763 array_verify (EV_A_ (W *)prepares, preparecnt); 2114 array_verify (EV_A_ (W *)prepares, preparecnt);
2115#endif
1764 2116
2117#if EV_CHECK_ENABLE
1765 assert (checkmax >= checkcnt); 2118 assert (checkmax >= checkcnt);
1766 array_verify (EV_A_ (W *)checks, checkcnt); 2119 array_verify (EV_A_ (W *)checks, checkcnt);
2120#endif
1767 2121
1768# if 0 2122# if 0
2123#if EV_CHILD_ENABLE
1769 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2124 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1770 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2125 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2126#endif
1771# endif 2127# endif
1772#endif 2128#endif
1773} 2129}
1774#endif 2130#endif
1775 2131
1776#if EV_MULTIPLICITY 2132#if EV_MULTIPLICITY
1777struct ev_loop * 2133struct ev_loop *
1778ev_default_loop_init (unsigned int flags)
1779#else 2134#else
1780int 2135int
2136#endif
1781ev_default_loop (unsigned int flags) 2137ev_default_loop (unsigned int flags)
1782#endif
1783{ 2138{
1784 if (!ev_default_loop_ptr) 2139 if (!ev_default_loop_ptr)
1785 { 2140 {
1786#if EV_MULTIPLICITY 2141#if EV_MULTIPLICITY
1787 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2142 EV_P = ev_default_loop_ptr = &default_loop_struct;
1788#else 2143#else
1789 ev_default_loop_ptr = 1; 2144 ev_default_loop_ptr = 1;
1790#endif 2145#endif
1791 2146
1792 loop_init (EV_A_ flags); 2147 loop_init (EV_A_ flags);
1793 2148
1794 if (ev_backend (EV_A)) 2149 if (ev_backend (EV_A))
1795 { 2150 {
1796#ifndef _WIN32 2151#if EV_CHILD_ENABLE
1797 ev_signal_init (&childev, childcb, SIGCHLD); 2152 ev_signal_init (&childev, childcb, SIGCHLD);
1798 ev_set_priority (&childev, EV_MAXPRI); 2153 ev_set_priority (&childev, EV_MAXPRI);
1799 ev_signal_start (EV_A_ &childev); 2154 ev_signal_start (EV_A_ &childev);
1800 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2155 ev_unref (EV_A); /* child watcher should not keep loop alive */
1801#endif 2156#endif
… …
1806 2161
1807 return ev_default_loop_ptr; 2162 return ev_default_loop_ptr;
1808} 2163}
1809 2164
1810void 2165void
1811ev_default_destroy (void) 2166ev_loop_fork (EV_P)
1812{ 2167{
1813#if EV_MULTIPLICITY
1814 struct ev_loop *loop = ev_default_loop_ptr;
1815#endif
1816
1817 ev_default_loop_ptr = 0;
1818
1819#ifndef _WIN32
1820 ev_ref (EV_A); /* child watcher */
1821 ev_signal_stop (EV_A_ &childev);
1822#endif
1823
1824 loop_destroy (EV_A);
1825}
1826
1827void
1828ev_default_fork (void)
1829{
1830#if EV_MULTIPLICITY
1831 struct ev_loop *loop = ev_default_loop_ptr;
1832#endif
1833
1834 postfork = 1; /* must be in line with ev_loop_fork */ 2168 postfork = 1; /* must be in line with ev_default_fork */
1835} 2169}
1836 2170
1837/*****************************************************************************/ 2171/*****************************************************************************/
1838 2172
1839void 2173void
… …
1861 2195
1862 for (pri = NUMPRI; pri--; ) 2196 for (pri = NUMPRI; pri--; )
1863 while (pendingcnt [pri]) 2197 while (pendingcnt [pri])
1864 { 2198 {
1865 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2199 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1866
1867 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1868 /* ^ this is no longer true, as pending_w could be here */
1869 2200
1870 p->w->pending = 0; 2201 p->w->pending = 0;
1871 EV_CB_INVOKE (p->w, p->events); 2202 EV_CB_INVOKE (p->w, p->events);
1872 EV_FREQUENT_CHECK; 2203 EV_FREQUENT_CHECK;
1873 } 2204 }
… …
1930 EV_FREQUENT_CHECK; 2261 EV_FREQUENT_CHECK;
1931 feed_reverse (EV_A_ (W)w); 2262 feed_reverse (EV_A_ (W)w);
1932 } 2263 }
1933 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2264 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1934 2265
1935 feed_reverse_done (EV_A_ EV_TIMEOUT); 2266 feed_reverse_done (EV_A_ EV_TIMER);
1936 } 2267 }
1937} 2268}
1938 2269
1939#if EV_PERIODIC_ENABLE 2270#if EV_PERIODIC_ENABLE
2271
2272static void noinline
2273periodic_recalc (EV_P_ ev_periodic *w)
2274{
2275 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2276 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2277
2278 /* the above almost always errs on the low side */
2279 while (at <= ev_rt_now)
2280 {
2281 ev_tstamp nat = at + w->interval;
2282
2283 /* when resolution fails us, we use ev_rt_now */
2284 if (expect_false (nat == at))
2285 {
2286 at = ev_rt_now;
2287 break;
2288 }
2289
2290 at = nat;
2291 }
2292
2293 ev_at (w) = at;
2294}
2295
1940/* make periodics pending */ 2296/* make periodics pending */
1941inline_size void 2297inline_size void
1942periodics_reify (EV_P) 2298periodics_reify (EV_P)
1943{ 2299{
1944 EV_FREQUENT_CHECK; 2300 EV_FREQUENT_CHECK;
… …
1963 ANHE_at_cache (periodics [HEAP0]); 2319 ANHE_at_cache (periodics [HEAP0]);
1964 downheap (periodics, periodiccnt, HEAP0); 2320 downheap (periodics, periodiccnt, HEAP0);
1965 } 2321 }
1966 else if (w->interval) 2322 else if (w->interval)
1967 { 2323 {
1968 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2324 periodic_recalc (EV_A_ w);
1969 /* if next trigger time is not sufficiently in the future, put it there */
1970 /* this might happen because of floating point inexactness */
1971 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1972 {
1973 ev_at (w) += w->interval;
1974
1975 /* if interval is unreasonably low we might still have a time in the past */
1976 /* so correct this. this will make the periodic very inexact, but the user */
1977 /* has effectively asked to get triggered more often than possible */
1978 if (ev_at (w) < ev_rt_now)
1979 ev_at (w) = ev_rt_now;
1980 }
1981
1982 ANHE_at_cache (periodics [HEAP0]); 2325 ANHE_at_cache (periodics [HEAP0]);
1983 downheap (periodics, periodiccnt, HEAP0); 2326 downheap (periodics, periodiccnt, HEAP0);
1984 } 2327 }
1985 else 2328 else
1986 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2329 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1993 feed_reverse_done (EV_A_ EV_PERIODIC); 2336 feed_reverse_done (EV_A_ EV_PERIODIC);
1994 } 2337 }
1995} 2338}
1996 2339
1997/* simply recalculate all periodics */ 2340/* simply recalculate all periodics */
1998/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2341/* TODO: maybe ensure that at least one event happens when jumping forward? */
1999static void noinline 2342static void noinline
2000periodics_reschedule (EV_P) 2343periodics_reschedule (EV_P)
2001{ 2344{
2002 int i; 2345 int i;
2003 2346
… …
2007 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2350 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2008 2351
2009 if (w->reschedule_cb) 2352 if (w->reschedule_cb)
2010 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2353 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2011 else if (w->interval) 2354 else if (w->interval)
2012 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2355 periodic_recalc (EV_A_ w);
2013 2356
2014 ANHE_at_cache (periodics [i]); 2357 ANHE_at_cache (periodics [i]);
2015 } 2358 }
2016 2359
2017 reheap (periodics, periodiccnt); 2360 reheap (periodics, periodiccnt);
… …
2031 ANHE_at_cache (*he); 2374 ANHE_at_cache (*he);
2032 } 2375 }
2033} 2376}
2034 2377
2035/* fetch new monotonic and realtime times from the kernel */ 2378/* fetch new monotonic and realtime times from the kernel */
2036/* also detetc if there was a timejump, and act accordingly */ 2379/* also detect if there was a timejump, and act accordingly */
2037inline_speed void 2380inline_speed void
2038time_update (EV_P_ ev_tstamp max_block) 2381time_update (EV_P_ ev_tstamp max_block)
2039{ 2382{
2040#if EV_USE_MONOTONIC 2383#if EV_USE_MONOTONIC
2041 if (expect_true (have_monotonic)) 2384 if (expect_true (have_monotonic))
… …
2064 * doesn't hurt either as we only do this on time-jumps or 2407 * doesn't hurt either as we only do this on time-jumps or
2065 * in the unlikely event of having been preempted here. 2408 * in the unlikely event of having been preempted here.
2066 */ 2409 */
2067 for (i = 4; --i; ) 2410 for (i = 4; --i; )
2068 { 2411 {
2412 ev_tstamp diff;
2069 rtmn_diff = ev_rt_now - mn_now; 2413 rtmn_diff = ev_rt_now - mn_now;
2070 2414
2415 diff = odiff - rtmn_diff;
2416
2071 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2417 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2072 return; /* all is well */ 2418 return; /* all is well */
2073 2419
2074 ev_rt_now = ev_time (); 2420 ev_rt_now = ev_time ();
2075 mn_now = get_clock (); 2421 mn_now = get_clock ();
2076 now_floor = mn_now; 2422 now_floor = mn_now;
… …
2099 mn_now = ev_rt_now; 2445 mn_now = ev_rt_now;
2100 } 2446 }
2101} 2447}
2102 2448
2103void 2449void
2104ev_loop (EV_P_ int flags) 2450ev_run (EV_P_ int flags)
2105{ 2451{
2106#if EV_MINIMAL < 2 2452#if EV_FEATURE_API
2107 ++loop_depth; 2453 ++loop_depth;
2108#endif 2454#endif
2109 2455
2110 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 2456 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2111 2457
2112 loop_done = EVUNLOOP_CANCEL; 2458 loop_done = EVBREAK_CANCEL;
2113 2459
2114 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 2460 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2115 2461
2116 do 2462 do
2117 { 2463 {
2118#if EV_VERIFY >= 2 2464#if EV_VERIFY >= 2
2119 ev_loop_verify (EV_A); 2465 ev_verify (EV_A);
2120#endif 2466#endif
2121 2467
2122#ifndef _WIN32 2468#ifndef _WIN32
2123 if (expect_false (curpid)) /* penalise the forking check even more */ 2469 if (expect_false (curpid)) /* penalise the forking check even more */
2124 if (expect_false (getpid () != curpid)) 2470 if (expect_false (getpid () != curpid))
… …
2136 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2482 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2137 EV_INVOKE_PENDING; 2483 EV_INVOKE_PENDING;
2138 } 2484 }
2139#endif 2485#endif
2140 2486
2487#if EV_PREPARE_ENABLE
2141 /* queue prepare watchers (and execute them) */ 2488 /* queue prepare watchers (and execute them) */
2142 if (expect_false (preparecnt)) 2489 if (expect_false (preparecnt))
2143 { 2490 {
2144 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2491 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2145 EV_INVOKE_PENDING; 2492 EV_INVOKE_PENDING;
2146 } 2493 }
2494#endif
2147 2495
2148 if (expect_false (loop_done)) 2496 if (expect_false (loop_done))
2149 break; 2497 break;
2150 2498
2151 /* we might have forked, so reify kernel state if necessary */ 2499 /* we might have forked, so reify kernel state if necessary */
… …
2158 /* calculate blocking time */ 2506 /* calculate blocking time */
2159 { 2507 {
2160 ev_tstamp waittime = 0.; 2508 ev_tstamp waittime = 0.;
2161 ev_tstamp sleeptime = 0.; 2509 ev_tstamp sleeptime = 0.;
2162 2510
2511 /* remember old timestamp for io_blocktime calculation */
2512 ev_tstamp prev_mn_now = mn_now;
2513
2514 /* update time to cancel out callback processing overhead */
2515 time_update (EV_A_ 1e100);
2516
2517 /* from now on, we want a pipe-wake-up */
2518 pipe_write_wanted = 1;
2519
2163 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2520 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2164 { 2521 {
2165 /* remember old timestamp for io_blocktime calculation */
2166 ev_tstamp prev_mn_now = mn_now;
2167
2168 /* update time to cancel out callback processing overhead */
2169 time_update (EV_A_ 1e100);
2170
2171 waittime = MAX_BLOCKTIME; 2522 waittime = MAX_BLOCKTIME;
2172 2523
2173 if (timercnt) 2524 if (timercnt)
2174 { 2525 {
2175 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2526 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2176 if (waittime > to) waittime = to; 2527 if (waittime > to) waittime = to;
2177 } 2528 }
2178 2529
2179#if EV_PERIODIC_ENABLE 2530#if EV_PERIODIC_ENABLE
2180 if (periodiccnt) 2531 if (periodiccnt)
2181 { 2532 {
2182 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2533 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2183 if (waittime > to) waittime = to; 2534 if (waittime > to) waittime = to;
2184 } 2535 }
2185#endif 2536#endif
2186 2537
2187 /* don't let timeouts decrease the waittime below timeout_blocktime */ 2538 /* don't let timeouts decrease the waittime below timeout_blocktime */
2188 if (expect_false (waittime < timeout_blocktime)) 2539 if (expect_false (waittime < timeout_blocktime))
2189 waittime = timeout_blocktime; 2540 waittime = timeout_blocktime;
2541
2542 /* at this point, we NEED to wait, so we have to ensure */
2543 /* to pass a minimum nonzero value to the backend */
2544 if (expect_false (waittime < backend_mintime))
2545 waittime = backend_mintime;
2190 2546
2191 /* extra check because io_blocktime is commonly 0 */ 2547 /* extra check because io_blocktime is commonly 0 */
2192 if (expect_false (io_blocktime)) 2548 if (expect_false (io_blocktime))
2193 { 2549 {
2194 sleeptime = io_blocktime - (mn_now - prev_mn_now); 2550 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2195 2551
2196 if (sleeptime > waittime - backend_fudge) 2552 if (sleeptime > waittime - backend_mintime)
2197 sleeptime = waittime - backend_fudge; 2553 sleeptime = waittime - backend_mintime;
2198 2554
2199 if (expect_true (sleeptime > 0.)) 2555 if (expect_true (sleeptime > 0.))
2200 { 2556 {
2201 ev_sleep (sleeptime); 2557 ev_sleep (sleeptime);
2202 waittime -= sleeptime; 2558 waittime -= sleeptime;
2203 } 2559 }
2204 } 2560 }
2205 } 2561 }
2206 2562
2207#if EV_MINIMAL < 2 2563#if EV_FEATURE_API
2208 ++loop_count; 2564 ++loop_count;
2209#endif 2565#endif
2210 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 2566 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2211 backend_poll (EV_A_ waittime); 2567 backend_poll (EV_A_ waittime);
2212 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 2568 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2569
2570 pipe_write_wanted = 0;
2571
2572 if (pipe_write_skipped)
2573 {
2574 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
2575 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2576 }
2577
2213 2578
2214 /* update ev_rt_now, do magic */ 2579 /* update ev_rt_now, do magic */
2215 time_update (EV_A_ waittime + sleeptime); 2580 time_update (EV_A_ waittime + sleeptime);
2216 } 2581 }
2217 2582
… …
2224#if EV_IDLE_ENABLE 2589#if EV_IDLE_ENABLE
2225 /* queue idle watchers unless other events are pending */ 2590 /* queue idle watchers unless other events are pending */
2226 idle_reify (EV_A); 2591 idle_reify (EV_A);
2227#endif 2592#endif
2228 2593
2594#if EV_CHECK_ENABLE
2229 /* queue check watchers, to be executed first */ 2595 /* queue check watchers, to be executed first */
2230 if (expect_false (checkcnt)) 2596 if (expect_false (checkcnt))
2231 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2597 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2598#endif
2232 2599
2233 EV_INVOKE_PENDING; 2600 EV_INVOKE_PENDING;
2234 } 2601 }
2235 while (expect_true ( 2602 while (expect_true (
2236 activecnt 2603 activecnt
2237 && !loop_done 2604 && !loop_done
2238 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2605 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2239 )); 2606 ));
2240 2607
2241 if (loop_done == EVUNLOOP_ONE) 2608 if (loop_done == EVBREAK_ONE)
2242 loop_done = EVUNLOOP_CANCEL; 2609 loop_done = EVBREAK_CANCEL;
2243 2610
2244#if EV_MINIMAL < 2 2611#if EV_FEATURE_API
2245 --loop_depth; 2612 --loop_depth;
2246#endif 2613#endif
2247} 2614}
2248 2615
2249void 2616void
2250ev_unloop (EV_P_ int how) 2617ev_break (EV_P_ int how)
2251{ 2618{
2252 loop_done = how; 2619 loop_done = how;
2253} 2620}
2254 2621
2255void 2622void
… …
2302inline_size void 2669inline_size void
2303wlist_del (WL *head, WL elem) 2670wlist_del (WL *head, WL elem)
2304{ 2671{
2305 while (*head) 2672 while (*head)
2306 { 2673 {
2307 if (*head == elem) 2674 if (expect_true (*head == elem))
2308 { 2675 {
2309 *head = elem->next; 2676 *head = elem->next;
2310 return; 2677 break;
2311 } 2678 }
2312 2679
2313 head = &(*head)->next; 2680 head = &(*head)->next;
2314 } 2681 }
2315} 2682}
… …
2375 2742
2376 if (expect_false (ev_is_active (w))) 2743 if (expect_false (ev_is_active (w)))
2377 return; 2744 return;
2378 2745
2379 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 2746 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2380 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 2747 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2381 2748
2382 EV_FREQUENT_CHECK; 2749 EV_FREQUENT_CHECK;
2383 2750
2384 ev_start (EV_A_ (W)w, 1); 2751 ev_start (EV_A_ (W)w, 1);
2385 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 2752 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
… …
2403 EV_FREQUENT_CHECK; 2770 EV_FREQUENT_CHECK;
2404 2771
2405 wlist_del (&anfds[w->fd].head, (WL)w); 2772 wlist_del (&anfds[w->fd].head, (WL)w);
2406 ev_stop (EV_A_ (W)w); 2773 ev_stop (EV_A_ (W)w);
2407 2774
2408 fd_change (EV_A_ w->fd, 1); 2775 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2409 2776
2410 EV_FREQUENT_CHECK; 2777 EV_FREQUENT_CHECK;
2411} 2778}
2412 2779
2413void noinline 2780void noinline
… …
2455 timers [active] = timers [timercnt + HEAP0]; 2822 timers [active] = timers [timercnt + HEAP0];
2456 adjustheap (timers, timercnt, active); 2823 adjustheap (timers, timercnt, active);
2457 } 2824 }
2458 } 2825 }
2459 2826
2460 EV_FREQUENT_CHECK;
2461
2462 ev_at (w) -= mn_now; 2827 ev_at (w) -= mn_now;
2463 2828
2464 ev_stop (EV_A_ (W)w); 2829 ev_stop (EV_A_ (W)w);
2830
2831 EV_FREQUENT_CHECK;
2465} 2832}
2466 2833
2467void noinline 2834void noinline
2468ev_timer_again (EV_P_ ev_timer *w) 2835ev_timer_again (EV_P_ ev_timer *w)
2469{ 2836{
… …
2505 if (w->reschedule_cb) 2872 if (w->reschedule_cb)
2506 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2873 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2507 else if (w->interval) 2874 else if (w->interval)
2508 { 2875 {
2509 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 2876 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2510 /* this formula differs from the one in periodic_reify because we do not always round up */ 2877 periodic_recalc (EV_A_ w);
2511 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2512 } 2878 }
2513 else 2879 else
2514 ev_at (w) = w->offset; 2880 ev_at (w) = w->offset;
2515 2881
2516 EV_FREQUENT_CHECK; 2882 EV_FREQUENT_CHECK;
… …
2548 periodics [active] = periodics [periodiccnt + HEAP0]; 2914 periodics [active] = periodics [periodiccnt + HEAP0];
2549 adjustheap (periodics, periodiccnt, active); 2915 adjustheap (periodics, periodiccnt, active);
2550 } 2916 }
2551 } 2917 }
2552 2918
2553 EV_FREQUENT_CHECK;
2554
2555 ev_stop (EV_A_ (W)w); 2919 ev_stop (EV_A_ (W)w);
2920
2921 EV_FREQUENT_CHECK;
2556} 2922}
2557 2923
2558void noinline 2924void noinline
2559ev_periodic_again (EV_P_ ev_periodic *w) 2925ev_periodic_again (EV_P_ ev_periodic *w)
2560{ 2926{
… …
2566 2932
2567#ifndef SA_RESTART 2933#ifndef SA_RESTART
2568# define SA_RESTART 0 2934# define SA_RESTART 0
2569#endif 2935#endif
2570 2936
2937#if EV_SIGNAL_ENABLE
2938
2571void noinline 2939void noinline
2572ev_signal_start (EV_P_ ev_signal *w) 2940ev_signal_start (EV_P_ ev_signal *w)
2573{ 2941{
2574#if EV_MULTIPLICITY
2575 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2576#endif
2577 if (expect_false (ev_is_active (w))) 2942 if (expect_false (ev_is_active (w)))
2578 return; 2943 return;
2579 2944
2580 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 2945 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2581 2946
2582 evpipe_init (EV_A); 2947#if EV_MULTIPLICITY
2948 assert (("libev: a signal must not be attached to two different loops",
2949 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2583 2950
2584 EV_FREQUENT_CHECK; 2951 signals [w->signum - 1].loop = EV_A;
2952#endif
2585 2953
2954 EV_FREQUENT_CHECK;
2955
2956#if EV_USE_SIGNALFD
2957 if (sigfd == -2)
2586 { 2958 {
2587#ifndef _WIN32 2959 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2588 sigset_t full, prev; 2960 if (sigfd < 0 && errno == EINVAL)
2589 sigfillset (&full); 2961 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2590 sigprocmask (SIG_SETMASK, &full, &prev);
2591#endif
2592 2962
2593 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 2963 if (sigfd >= 0)
2964 {
2965 fd_intern (sigfd); /* doing it twice will not hurt */
2594 2966
2595#ifndef _WIN32 2967 sigemptyset (&sigfd_set);
2596 sigprocmask (SIG_SETMASK, &prev, 0); 2968
2597#endif 2969 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2970 ev_set_priority (&sigfd_w, EV_MAXPRI);
2971 ev_io_start (EV_A_ &sigfd_w);
2972 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2973 }
2598 } 2974 }
2975
2976 if (sigfd >= 0)
2977 {
2978 /* TODO: check .head */
2979 sigaddset (&sigfd_set, w->signum);
2980 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2981
2982 signalfd (sigfd, &sigfd_set, 0);
2983 }
2984#endif
2599 2985
2600 ev_start (EV_A_ (W)w, 1); 2986 ev_start (EV_A_ (W)w, 1);
2601 wlist_add (&signals [w->signum - 1].head, (WL)w); 2987 wlist_add (&signals [w->signum - 1].head, (WL)w);
2602 2988
2603 if (!((WL)w)->next) 2989 if (!((WL)w)->next)
2990# if EV_USE_SIGNALFD
2991 if (sigfd < 0) /*TODO*/
2992# endif
2604 { 2993 {
2605#if _WIN32 2994# ifdef _WIN32
2995 evpipe_init (EV_A);
2996
2606 signal (w->signum, ev_sighandler); 2997 signal (w->signum, ev_sighandler);
2607#else 2998# else
2608 struct sigaction sa = { }; 2999 struct sigaction sa;
3000
3001 evpipe_init (EV_A);
3002
2609 sa.sa_handler = ev_sighandler; 3003 sa.sa_handler = ev_sighandler;
2610 sigfillset (&sa.sa_mask); 3004 sigfillset (&sa.sa_mask);
2611 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3005 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2612 sigaction (w->signum, &sa, 0); 3006 sigaction (w->signum, &sa, 0);
3007
3008 if (origflags & EVFLAG_NOSIGMASK)
3009 {
3010 sigemptyset (&sa.sa_mask);
3011 sigaddset (&sa.sa_mask, w->signum);
3012 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3013 }
2613#endif 3014#endif
2614 } 3015 }
2615 3016
2616 EV_FREQUENT_CHECK; 3017 EV_FREQUENT_CHECK;
2617} 3018}
2618 3019
2619void noinline 3020void noinline
… …
2627 3028
2628 wlist_del (&signals [w->signum - 1].head, (WL)w); 3029 wlist_del (&signals [w->signum - 1].head, (WL)w);
2629 ev_stop (EV_A_ (W)w); 3030 ev_stop (EV_A_ (W)w);
2630 3031
2631 if (!signals [w->signum - 1].head) 3032 if (!signals [w->signum - 1].head)
3033 {
3034#if EV_MULTIPLICITY
3035 signals [w->signum - 1].loop = 0; /* unattach from signal */
3036#endif
3037#if EV_USE_SIGNALFD
3038 if (sigfd >= 0)
3039 {
3040 sigset_t ss;
3041
3042 sigemptyset (&ss);
3043 sigaddset (&ss, w->signum);
3044 sigdelset (&sigfd_set, w->signum);
3045
3046 signalfd (sigfd, &sigfd_set, 0);
3047 sigprocmask (SIG_UNBLOCK, &ss, 0);
3048 }
3049 else
3050#endif
2632 signal (w->signum, SIG_DFL); 3051 signal (w->signum, SIG_DFL);
3052 }
2633 3053
2634 EV_FREQUENT_CHECK; 3054 EV_FREQUENT_CHECK;
2635} 3055}
3056
3057#endif
3058
3059#if EV_CHILD_ENABLE
2636 3060
2637void 3061void
2638ev_child_start (EV_P_ ev_child *w) 3062ev_child_start (EV_P_ ev_child *w)
2639{ 3063{
2640#if EV_MULTIPLICITY 3064#if EV_MULTIPLICITY
… …
2644 return; 3068 return;
2645 3069
2646 EV_FREQUENT_CHECK; 3070 EV_FREQUENT_CHECK;
2647 3071
2648 ev_start (EV_A_ (W)w, 1); 3072 ev_start (EV_A_ (W)w, 1);
2649 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3073 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2650 3074
2651 EV_FREQUENT_CHECK; 3075 EV_FREQUENT_CHECK;
2652} 3076}
2653 3077
2654void 3078void
… …
2658 if (expect_false (!ev_is_active (w))) 3082 if (expect_false (!ev_is_active (w)))
2659 return; 3083 return;
2660 3084
2661 EV_FREQUENT_CHECK; 3085 EV_FREQUENT_CHECK;
2662 3086
2663 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3087 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2664 ev_stop (EV_A_ (W)w); 3088 ev_stop (EV_A_ (W)w);
2665 3089
2666 EV_FREQUENT_CHECK; 3090 EV_FREQUENT_CHECK;
2667} 3091}
3092
3093#endif
2668 3094
2669#if EV_STAT_ENABLE 3095#if EV_STAT_ENABLE
2670 3096
2671# ifdef _WIN32 3097# ifdef _WIN32
2672# undef lstat 3098# undef lstat
… …
2678#define MIN_STAT_INTERVAL 0.1074891 3104#define MIN_STAT_INTERVAL 0.1074891
2679 3105
2680static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3106static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2681 3107
2682#if EV_USE_INOTIFY 3108#if EV_USE_INOTIFY
2683# define EV_INOTIFY_BUFSIZE 8192 3109
3110/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3111# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2684 3112
2685static void noinline 3113static void noinline
2686infy_add (EV_P_ ev_stat *w) 3114infy_add (EV_P_ ev_stat *w)
2687{ 3115{
2688 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); 3116 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);
2689 3117
2690 if (w->wd < 0) 3118 if (w->wd >= 0)
3119 {
3120 struct statfs sfs;
3121
3122 /* now local changes will be tracked by inotify, but remote changes won't */
3123 /* unless the filesystem is known to be local, we therefore still poll */
3124 /* also do poll on <2.6.25, but with normal frequency */
3125
3126 if (!fs_2625)
3127 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3128 else if (!statfs (w->path, &sfs)
3129 && (sfs.f_type == 0x1373 /* devfs */
3130 || sfs.f_type == 0xEF53 /* ext2/3 */
3131 || sfs.f_type == 0x3153464a /* jfs */
3132 || sfs.f_type == 0x52654973 /* reiser3 */
3133 || sfs.f_type == 0x01021994 /* tempfs */
3134 || sfs.f_type == 0x58465342 /* xfs */))
3135 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3136 else
3137 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2691 { 3138 }
3139 else
3140 {
3141 /* can't use inotify, continue to stat */
2692 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3142 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2693 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2694 3143
2695 /* monitor some parent directory for speedup hints */ 3144 /* if path is not there, monitor some parent directory for speedup hints */
2696 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3145 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2697 /* but an efficiency issue only */ 3146 /* but an efficiency issue only */
2698 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3147 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2699 { 3148 {
2700 char path [4096]; 3149 char path [4096];
… …
2710 if (!pend || pend == path) 3159 if (!pend || pend == path)
2711 break; 3160 break;
2712 3161
2713 *pend = 0; 3162 *pend = 0;
2714 w->wd = inotify_add_watch (fs_fd, path, mask); 3163 w->wd = inotify_add_watch (fs_fd, path, mask);
2715 } 3164 }
2716 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3165 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2717 } 3166 }
2718 } 3167 }
2719 3168
2720 if (w->wd >= 0) 3169 if (w->wd >= 0)
2721 {
2722 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3170 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2723 3171
2724 /* now local changes will be tracked by inotify, but remote changes won't */ 3172 /* now re-arm timer, if required */
2725 /* unless the filesystem it known to be local, we therefore still poll */ 3173 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2726 /* also do poll on <2.6.25, but with normal frequency */
2727 struct statfs sfs;
2728
2729 if (fs_2625 && !statfs (w->path, &sfs))
2730 if (sfs.f_type == 0x1373 /* devfs */
2731 || sfs.f_type == 0xEF53 /* ext2/3 */
2732 || sfs.f_type == 0x3153464a /* jfs */
2733 || sfs.f_type == 0x52654973 /* reiser3 */
2734 || sfs.f_type == 0x01021994 /* tempfs */
2735 || sfs.f_type == 0x58465342 /* xfs */)
2736 return;
2737
2738 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2739 ev_timer_again (EV_A_ &w->timer); 3174 ev_timer_again (EV_A_ &w->timer);
2740 } 3175 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2741} 3176}
2742 3177
2743static void noinline 3178static void noinline
2744infy_del (EV_P_ ev_stat *w) 3179infy_del (EV_P_ ev_stat *w)
2745{ 3180{
… …
2748 3183
2749 if (wd < 0) 3184 if (wd < 0)
2750 return; 3185 return;
2751 3186
2752 w->wd = -2; 3187 w->wd = -2;
2753 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3188 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2754 wlist_del (&fs_hash [slot].head, (WL)w); 3189 wlist_del (&fs_hash [slot].head, (WL)w);
2755 3190
2756 /* remove this watcher, if others are watching it, they will rearm */ 3191 /* remove this watcher, if others are watching it, they will rearm */
2757 inotify_rm_watch (fs_fd, wd); 3192 inotify_rm_watch (fs_fd, wd);
2758} 3193}
… …
2760static void noinline 3195static void noinline
2761infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3196infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2762{ 3197{
2763 if (slot < 0) 3198 if (slot < 0)
2764 /* overflow, need to check for all hash slots */ 3199 /* overflow, need to check for all hash slots */
2765 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3200 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2766 infy_wd (EV_A_ slot, wd, ev); 3201 infy_wd (EV_A_ slot, wd, ev);
2767 else 3202 else
2768 { 3203 {
2769 WL w_; 3204 WL w_;
2770 3205
2771 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3206 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2772 { 3207 {
2773 ev_stat *w = (ev_stat *)w_; 3208 ev_stat *w = (ev_stat *)w_;
2774 w_ = w_->next; /* lets us remove this watcher and all before it */ 3209 w_ = w_->next; /* lets us remove this watcher and all before it */
2775 3210
2776 if (w->wd == wd || wd == -1) 3211 if (w->wd == wd || wd == -1)
2777 { 3212 {
2778 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3213 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2779 { 3214 {
2780 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3215 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2781 w->wd = -1; 3216 w->wd = -1;
2782 infy_add (EV_A_ w); /* re-add, no matter what */ 3217 infy_add (EV_A_ w); /* re-add, no matter what */
2783 } 3218 }
2784 3219
2785 stat_timer_cb (EV_A_ &w->timer, 0); 3220 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2790 3225
2791static void 3226static void
2792infy_cb (EV_P_ ev_io *w, int revents) 3227infy_cb (EV_P_ ev_io *w, int revents)
2793{ 3228{
2794 char buf [EV_INOTIFY_BUFSIZE]; 3229 char buf [EV_INOTIFY_BUFSIZE];
2795 struct inotify_event *ev = (struct inotify_event *)buf;
2796 int ofs; 3230 int ofs;
2797 int len = read (fs_fd, buf, sizeof (buf)); 3231 int len = read (fs_fd, buf, sizeof (buf));
2798 3232
2799 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3233 for (ofs = 0; ofs < len; )
3234 {
3235 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2800 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3236 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3237 ofs += sizeof (struct inotify_event) + ev->len;
3238 }
2801} 3239}
2802 3240
2803inline_size void 3241inline_size void
2804check_2625 (EV_P) 3242ev_check_2625 (EV_P)
2805{ 3243{
2806 /* kernels < 2.6.25 are borked 3244 /* kernels < 2.6.25 are borked
2807 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3245 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2808 */ 3246 */
2809 struct utsname buf; 3247 if (ev_linux_version () < 0x020619)
2810 int major, minor, micro;
2811
2812 if (uname (&buf))
2813 return; 3248 return;
2814 3249
2815 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2816 return;
2817
2818 if (major < 2
2819 || (major == 2 && minor < 6)
2820 || (major == 2 && minor == 6 && micro < 25))
2821 return;
2822
2823 fs_2625 = 1; 3250 fs_2625 = 1;
3251}
3252
3253inline_size int
3254infy_newfd (void)
3255{
3256#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3257 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3258 if (fd >= 0)
3259 return fd;
3260#endif
3261 return inotify_init ();
2824} 3262}
2825 3263
2826inline_size void 3264inline_size void
2827infy_init (EV_P) 3265infy_init (EV_P)
2828{ 3266{
2829 if (fs_fd != -2) 3267 if (fs_fd != -2)
2830 return; 3268 return;
2831 3269
2832 fs_fd = -1; 3270 fs_fd = -1;
2833 3271
2834 check_2625 (EV_A); 3272 ev_check_2625 (EV_A);
2835 3273
2836 fs_fd = inotify_init (); 3274 fs_fd = infy_newfd ();
2837 3275
2838 if (fs_fd >= 0) 3276 if (fs_fd >= 0)
2839 { 3277 {
3278 fd_intern (fs_fd);
2840 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3279 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2841 ev_set_priority (&fs_w, EV_MAXPRI); 3280 ev_set_priority (&fs_w, EV_MAXPRI);
2842 ev_io_start (EV_A_ &fs_w); 3281 ev_io_start (EV_A_ &fs_w);
3282 ev_unref (EV_A);
2843 } 3283 }
2844} 3284}
2845 3285
2846inline_size void 3286inline_size void
2847infy_fork (EV_P) 3287infy_fork (EV_P)
… …
2849 int slot; 3289 int slot;
2850 3290
2851 if (fs_fd < 0) 3291 if (fs_fd < 0)
2852 return; 3292 return;
2853 3293
3294 ev_ref (EV_A);
3295 ev_io_stop (EV_A_ &fs_w);
2854 close (fs_fd); 3296 close (fs_fd);
2855 fs_fd = inotify_init (); 3297 fs_fd = infy_newfd ();
2856 3298
3299 if (fs_fd >= 0)
3300 {
3301 fd_intern (fs_fd);
3302 ev_io_set (&fs_w, fs_fd, EV_READ);
3303 ev_io_start (EV_A_ &fs_w);
3304 ev_unref (EV_A);
3305 }
3306
2857 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3307 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2858 { 3308 {
2859 WL w_ = fs_hash [slot].head; 3309 WL w_ = fs_hash [slot].head;
2860 fs_hash [slot].head = 0; 3310 fs_hash [slot].head = 0;
2861 3311
2862 while (w_) 3312 while (w_)
… …
2867 w->wd = -1; 3317 w->wd = -1;
2868 3318
2869 if (fs_fd >= 0) 3319 if (fs_fd >= 0)
2870 infy_add (EV_A_ w); /* re-add, no matter what */ 3320 infy_add (EV_A_ w); /* re-add, no matter what */
2871 else 3321 else
3322 {
3323 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3324 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2872 ev_timer_again (EV_A_ &w->timer); 3325 ev_timer_again (EV_A_ &w->timer);
3326 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3327 }
2873 } 3328 }
2874 } 3329 }
2875} 3330}
2876 3331
2877#endif 3332#endif
… …
2894static void noinline 3349static void noinline
2895stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3350stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2896{ 3351{
2897 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3352 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2898 3353
2899 /* we copy this here each the time so that */ 3354 ev_statdata prev = w->attr;
2900 /* prev has the old value when the callback gets invoked */
2901 w->prev = w->attr;
2902 ev_stat_stat (EV_A_ w); 3355 ev_stat_stat (EV_A_ w);
2903 3356
2904 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3357 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2905 if ( 3358 if (
2906 w->prev.st_dev != w->attr.st_dev 3359 prev.st_dev != w->attr.st_dev
2907 || w->prev.st_ino != w->attr.st_ino 3360 || prev.st_ino != w->attr.st_ino
2908 || w->prev.st_mode != w->attr.st_mode 3361 || prev.st_mode != w->attr.st_mode
2909 || w->prev.st_nlink != w->attr.st_nlink 3362 || prev.st_nlink != w->attr.st_nlink
2910 || w->prev.st_uid != w->attr.st_uid 3363 || prev.st_uid != w->attr.st_uid
2911 || w->prev.st_gid != w->attr.st_gid 3364 || prev.st_gid != w->attr.st_gid
2912 || w->prev.st_rdev != w->attr.st_rdev 3365 || prev.st_rdev != w->attr.st_rdev
2913 || w->prev.st_size != w->attr.st_size 3366 || prev.st_size != w->attr.st_size
2914 || w->prev.st_atime != w->attr.st_atime 3367 || prev.st_atime != w->attr.st_atime
2915 || w->prev.st_mtime != w->attr.st_mtime 3368 || prev.st_mtime != w->attr.st_mtime
2916 || w->prev.st_ctime != w->attr.st_ctime 3369 || prev.st_ctime != w->attr.st_ctime
2917 ) { 3370 ) {
3371 /* we only update w->prev on actual differences */
3372 /* in case we test more often than invoke the callback, */
3373 /* to ensure that prev is always different to attr */
3374 w->prev = prev;
3375
2918 #if EV_USE_INOTIFY 3376 #if EV_USE_INOTIFY
2919 if (fs_fd >= 0) 3377 if (fs_fd >= 0)
2920 { 3378 {
2921 infy_del (EV_A_ w); 3379 infy_del (EV_A_ w);
2922 infy_add (EV_A_ w); 3380 infy_add (EV_A_ w);
… …
2947 3405
2948 if (fs_fd >= 0) 3406 if (fs_fd >= 0)
2949 infy_add (EV_A_ w); 3407 infy_add (EV_A_ w);
2950 else 3408 else
2951#endif 3409#endif
3410 {
2952 ev_timer_again (EV_A_ &w->timer); 3411 ev_timer_again (EV_A_ &w->timer);
3412 ev_unref (EV_A);
3413 }
2953 3414
2954 ev_start (EV_A_ (W)w, 1); 3415 ev_start (EV_A_ (W)w, 1);
2955 3416
2956 EV_FREQUENT_CHECK; 3417 EV_FREQUENT_CHECK;
2957} 3418}
… …
2966 EV_FREQUENT_CHECK; 3427 EV_FREQUENT_CHECK;
2967 3428
2968#if EV_USE_INOTIFY 3429#if EV_USE_INOTIFY
2969 infy_del (EV_A_ w); 3430 infy_del (EV_A_ w);
2970#endif 3431#endif
3432
3433 if (ev_is_active (&w->timer))
3434 {
3435 ev_ref (EV_A);
2971 ev_timer_stop (EV_A_ &w->timer); 3436 ev_timer_stop (EV_A_ &w->timer);
3437 }
2972 3438
2973 ev_stop (EV_A_ (W)w); 3439 ev_stop (EV_A_ (W)w);
2974 3440
2975 EV_FREQUENT_CHECK; 3441 EV_FREQUENT_CHECK;
2976} 3442}
… …
3021 3487
3022 EV_FREQUENT_CHECK; 3488 EV_FREQUENT_CHECK;
3023} 3489}
3024#endif 3490#endif
3025 3491
3492#if EV_PREPARE_ENABLE
3026void 3493void
3027ev_prepare_start (EV_P_ ev_prepare *w) 3494ev_prepare_start (EV_P_ ev_prepare *w)
3028{ 3495{
3029 if (expect_false (ev_is_active (w))) 3496 if (expect_false (ev_is_active (w)))
3030 return; 3497 return;
… …
3056 3523
3057 ev_stop (EV_A_ (W)w); 3524 ev_stop (EV_A_ (W)w);
3058 3525
3059 EV_FREQUENT_CHECK; 3526 EV_FREQUENT_CHECK;
3060} 3527}
3528#endif
3061 3529
3530#if EV_CHECK_ENABLE
3062void 3531void
3063ev_check_start (EV_P_ ev_check *w) 3532ev_check_start (EV_P_ ev_check *w)
3064{ 3533{
3065 if (expect_false (ev_is_active (w))) 3534 if (expect_false (ev_is_active (w)))
3066 return; 3535 return;
… …
3092 3561
3093 ev_stop (EV_A_ (W)w); 3562 ev_stop (EV_A_ (W)w);
3094 3563
3095 EV_FREQUENT_CHECK; 3564 EV_FREQUENT_CHECK;
3096} 3565}
3566#endif
3097 3567
3098#if EV_EMBED_ENABLE 3568#if EV_EMBED_ENABLE
3099void noinline 3569void noinline
3100ev_embed_sweep (EV_P_ ev_embed *w) 3570ev_embed_sweep (EV_P_ ev_embed *w)
3101{ 3571{
3102 ev_loop (w->other, EVLOOP_NONBLOCK); 3572 ev_run (w->other, EVRUN_NOWAIT);
3103} 3573}
3104 3574
3105static void 3575static void
3106embed_io_cb (EV_P_ ev_io *io, int revents) 3576embed_io_cb (EV_P_ ev_io *io, int revents)
3107{ 3577{
3108 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3578 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3109 3579
3110 if (ev_cb (w)) 3580 if (ev_cb (w))
3111 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3581 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3112 else 3582 else
3113 ev_loop (w->other, EVLOOP_NONBLOCK); 3583 ev_run (w->other, EVRUN_NOWAIT);
3114} 3584}
3115 3585
3116static void 3586static void
3117embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3587embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3118{ 3588{
3119 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3589 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3120 3590
3121 { 3591 {
3122 struct ev_loop *loop = w->other; 3592 EV_P = w->other;
3123 3593
3124 while (fdchangecnt) 3594 while (fdchangecnt)
3125 { 3595 {
3126 fd_reify (EV_A); 3596 fd_reify (EV_A);
3127 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3597 ev_run (EV_A_ EVRUN_NOWAIT);
3128 } 3598 }
3129 } 3599 }
3130} 3600}
3131 3601
3132static void 3602static void
… …
3135 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 3605 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3136 3606
3137 ev_embed_stop (EV_A_ w); 3607 ev_embed_stop (EV_A_ w);
3138 3608
3139 { 3609 {
3140 struct ev_loop *loop = w->other; 3610 EV_P = w->other;
3141 3611
3142 ev_loop_fork (EV_A); 3612 ev_loop_fork (EV_A);
3143 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3613 ev_run (EV_A_ EVRUN_NOWAIT);
3144 } 3614 }
3145 3615
3146 ev_embed_start (EV_A_ w); 3616 ev_embed_start (EV_A_ w);
3147} 3617}
3148 3618
… …
3159{ 3629{
3160 if (expect_false (ev_is_active (w))) 3630 if (expect_false (ev_is_active (w)))
3161 return; 3631 return;
3162 3632
3163 { 3633 {
3164 struct ev_loop *loop = w->other; 3634 EV_P = w->other;
3165 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3635 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3166 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3636 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3167 } 3637 }
3168 3638
3169 EV_FREQUENT_CHECK; 3639 EV_FREQUENT_CHECK;
… …
3196 3666
3197 ev_io_stop (EV_A_ &w->io); 3667 ev_io_stop (EV_A_ &w->io);
3198 ev_prepare_stop (EV_A_ &w->prepare); 3668 ev_prepare_stop (EV_A_ &w->prepare);
3199 ev_fork_stop (EV_A_ &w->fork); 3669 ev_fork_stop (EV_A_ &w->fork);
3200 3670
3671 ev_stop (EV_A_ (W)w);
3672
3201 EV_FREQUENT_CHECK; 3673 EV_FREQUENT_CHECK;
3202} 3674}
3203#endif 3675#endif
3204 3676
3205#if EV_FORK_ENABLE 3677#if EV_FORK_ENABLE
… …
3238 3710
3239 EV_FREQUENT_CHECK; 3711 EV_FREQUENT_CHECK;
3240} 3712}
3241#endif 3713#endif
3242 3714
3243#if EV_ASYNC_ENABLE 3715#if EV_CLEANUP_ENABLE
3244void 3716void
3245ev_async_start (EV_P_ ev_async *w) 3717ev_cleanup_start (EV_P_ ev_cleanup *w)
3246{ 3718{
3247 if (expect_false (ev_is_active (w))) 3719 if (expect_false (ev_is_active (w)))
3248 return; 3720 return;
3721
3722 EV_FREQUENT_CHECK;
3723
3724 ev_start (EV_A_ (W)w, ++cleanupcnt);
3725 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
3726 cleanups [cleanupcnt - 1] = w;
3727
3728 /* cleanup watchers should never keep a refcount on the loop */
3729 ev_unref (EV_A);
3730 EV_FREQUENT_CHECK;
3731}
3732
3733void
3734ev_cleanup_stop (EV_P_ ev_cleanup *w)
3735{
3736 clear_pending (EV_A_ (W)w);
3737 if (expect_false (!ev_is_active (w)))
3738 return;
3739
3740 EV_FREQUENT_CHECK;
3741 ev_ref (EV_A);
3742
3743 {
3744 int active = ev_active (w);
3745
3746 cleanups [active - 1] = cleanups [--cleanupcnt];
3747 ev_active (cleanups [active - 1]) = active;
3748 }
3749
3750 ev_stop (EV_A_ (W)w);
3751
3752 EV_FREQUENT_CHECK;
3753}
3754#endif
3755
3756#if EV_ASYNC_ENABLE
3757void
3758ev_async_start (EV_P_ ev_async *w)
3759{
3760 if (expect_false (ev_is_active (w)))
3761 return;
3762
3763 w->sent = 0;
3249 3764
3250 evpipe_init (EV_A); 3765 evpipe_init (EV_A);
3251 3766
3252 EV_FREQUENT_CHECK; 3767 EV_FREQUENT_CHECK;
3253 3768
… …
3281 3796
3282void 3797void
3283ev_async_send (EV_P_ ev_async *w) 3798ev_async_send (EV_P_ ev_async *w)
3284{ 3799{
3285 w->sent = 1; 3800 w->sent = 1;
3286 evpipe_write (EV_A_ &gotasync); 3801 evpipe_write (EV_A_ &async_pending);
3287} 3802}
3288#endif 3803#endif
3289 3804
3290/*****************************************************************************/ 3805/*****************************************************************************/
3291 3806
… …
3331{ 3846{
3332 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3847 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3333 3848
3334 if (expect_false (!once)) 3849 if (expect_false (!once))
3335 { 3850 {
3336 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3851 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3337 return; 3852 return;
3338 } 3853 }
3339 3854
3340 once->cb = cb; 3855 once->cb = cb;
3341 once->arg = arg; 3856 once->arg = arg;
… …
3428 if (types & EV_ASYNC) 3943 if (types & EV_ASYNC)
3429 for (i = asynccnt; i--; ) 3944 for (i = asynccnt; i--; )
3430 cb (EV_A_ EV_ASYNC, asyncs [i]); 3945 cb (EV_A_ EV_ASYNC, asyncs [i]);
3431#endif 3946#endif
3432 3947
3948#if EV_PREPARE_ENABLE
3433 if (types & EV_PREPARE) 3949 if (types & EV_PREPARE)
3434 for (i = preparecnt; i--; ) 3950 for (i = preparecnt; i--; )
3435#if EV_EMBED_ENABLE 3951# if EV_EMBED_ENABLE
3436 if (ev_cb (prepares [i]) != embed_prepare_cb) 3952 if (ev_cb (prepares [i]) != embed_prepare_cb)
3437#endif 3953# endif
3438 cb (EV_A_ EV_PREPARE, prepares [i]); 3954 cb (EV_A_ EV_PREPARE, prepares [i]);
3955#endif
3439 3956
3957#if EV_CHECK_ENABLE
3440 if (types & EV_CHECK) 3958 if (types & EV_CHECK)
3441 for (i = checkcnt; i--; ) 3959 for (i = checkcnt; i--; )
3442 cb (EV_A_ EV_CHECK, checks [i]); 3960 cb (EV_A_ EV_CHECK, checks [i]);
3961#endif
3443 3962
3963#if EV_SIGNAL_ENABLE
3444 if (types & EV_SIGNAL) 3964 if (types & EV_SIGNAL)
3445 for (i = 0; i < signalmax; ++i) 3965 for (i = 0; i < EV_NSIG - 1; ++i)
3446 for (wl = signals [i].head; wl; ) 3966 for (wl = signals [i].head; wl; )
3447 { 3967 {
3448 wn = wl->next; 3968 wn = wl->next;
3449 cb (EV_A_ EV_SIGNAL, wl); 3969 cb (EV_A_ EV_SIGNAL, wl);
3450 wl = wn; 3970 wl = wn;
3451 } 3971 }
3972#endif
3452 3973
3974#if EV_CHILD_ENABLE
3453 if (types & EV_CHILD) 3975 if (types & EV_CHILD)
3454 for (i = EV_PID_HASHSIZE; i--; ) 3976 for (i = (EV_PID_HASHSIZE); i--; )
3455 for (wl = childs [i]; wl; ) 3977 for (wl = childs [i]; wl; )
3456 { 3978 {
3457 wn = wl->next; 3979 wn = wl->next;
3458 cb (EV_A_ EV_CHILD, wl); 3980 cb (EV_A_ EV_CHILD, wl);
3459 wl = wn; 3981 wl = wn;
3460 } 3982 }
3983#endif
3461/* EV_STAT 0x00001000 /* stat data changed */ 3984/* EV_STAT 0x00001000 /* stat data changed */
3462/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 3985/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3463} 3986}
3464#endif 3987#endif
3465 3988
3466#if EV_MULTIPLICITY 3989#if EV_MULTIPLICITY
3467 #include "ev_wrap.h" 3990 #include "ev_wrap.h"
3468#endif 3991#endif
3469 3992
3470#ifdef __cplusplus 3993EV_CPP(})
3471}
3472#endif
3473 3994

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