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Comparing libev/ev.c (file contents):
Revision 1.294 by root, Wed Jul 8 02:46:05 2009 UTC vs.
Revision 1.372 by root, Wed Feb 16 08:02:50 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
… …
77# ifndef EV_USE_REALTIME 73# ifndef EV_USE_REALTIME
78# define EV_USE_REALTIME 0 74# define EV_USE_REALTIME 0
79# endif 75# endif
80# endif 76# endif
81 77
78# if HAVE_NANOSLEEP
82# ifndef EV_USE_NANOSLEEP 79# ifndef EV_USE_NANOSLEEP
83# if HAVE_NANOSLEEP
84# define EV_USE_NANOSLEEP 1 80# define EV_USE_NANOSLEEP EV_FEATURE_OS
81# endif
85# else 82# else
83# undef EV_USE_NANOSLEEP
86# define EV_USE_NANOSLEEP 0 84# define EV_USE_NANOSLEEP 0
85# endif
86
87# if HAVE_SELECT && HAVE_SYS_SELECT_H
88# ifndef EV_USE_SELECT
89# define EV_USE_SELECT EV_FEATURE_BACKENDS
87# endif 90# endif
91# else
92# undef EV_USE_SELECT
93# define EV_USE_SELECT 0
88# endif 94# endif
89 95
96# if HAVE_POLL && HAVE_POLL_H
90# ifndef EV_USE_SELECT 97# ifndef EV_USE_POLL
91# if HAVE_SELECT && HAVE_SYS_SELECT_H 98# define EV_USE_POLL EV_FEATURE_BACKENDS
92# define EV_USE_SELECT 1
93# else
94# define EV_USE_SELECT 0
95# endif 99# endif
96# endif
97
98# ifndef EV_USE_POLL
99# if HAVE_POLL && HAVE_POLL_H
100# define EV_USE_POLL 1
101# else 100# else
101# undef EV_USE_POLL
102# define EV_USE_POLL 0 102# define EV_USE_POLL 0
103# endif
104# endif 103# endif
105 104
106# ifndef EV_USE_EPOLL
107# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 105# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
108# define EV_USE_EPOLL 1 106# ifndef EV_USE_EPOLL
109# else 107# define EV_USE_EPOLL EV_FEATURE_BACKENDS
110# define EV_USE_EPOLL 0
111# endif 108# endif
109# else
110# undef EV_USE_EPOLL
111# define EV_USE_EPOLL 0
112# endif 112# endif
113 113
114# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
114# ifndef EV_USE_KQUEUE 115# ifndef EV_USE_KQUEUE
115# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 116# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
116# define EV_USE_KQUEUE 1
117# else
118# define EV_USE_KQUEUE 0
119# endif 117# endif
118# else
119# undef EV_USE_KQUEUE
120# define EV_USE_KQUEUE 0
120# endif 121# endif
121 122
122# ifndef EV_USE_PORT
123# if HAVE_PORT_H && HAVE_PORT_CREATE 123# if HAVE_PORT_H && HAVE_PORT_CREATE
124# define EV_USE_PORT 1 124# ifndef EV_USE_PORT
125# else 125# define EV_USE_PORT EV_FEATURE_BACKENDS
126# define EV_USE_PORT 0
127# endif 126# endif
127# else
128# undef EV_USE_PORT
129# define EV_USE_PORT 0
128# endif 130# endif
129 131
130# ifndef EV_USE_INOTIFY
131# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 132# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
132# define EV_USE_INOTIFY 1 133# ifndef EV_USE_INOTIFY
133# else
134# define EV_USE_INOTIFY 0 134# define EV_USE_INOTIFY EV_FEATURE_OS
135# endif 135# endif
136# else
137# undef EV_USE_INOTIFY
138# define EV_USE_INOTIFY 0
136# endif 139# endif
137 140
141# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
138# ifndef EV_USE_EVENTFD 142# ifndef EV_USE_SIGNALFD
139# if HAVE_EVENTFD 143# define EV_USE_SIGNALFD EV_FEATURE_OS
140# define EV_USE_EVENTFD 1
141# else
142# define EV_USE_EVENTFD 0
143# endif 144# endif
145# else
146# undef EV_USE_SIGNALFD
147# define EV_USE_SIGNALFD 0
148# endif
149
150# if HAVE_EVENTFD
151# ifndef EV_USE_EVENTFD
152# define EV_USE_EVENTFD EV_FEATURE_OS
153# endif
154# else
155# undef EV_USE_EVENTFD
156# define EV_USE_EVENTFD 0
144# endif 157# endif
145 158
146#endif 159#endif
147 160
148#include <math.h> 161#include <math.h>
149#include <stdlib.h> 162#include <stdlib.h>
163#include <string.h>
150#include <fcntl.h> 164#include <fcntl.h>
151#include <stddef.h> 165#include <stddef.h>
152 166
153#include <stdio.h> 167#include <stdio.h>
154 168
155#include <assert.h> 169#include <assert.h>
156#include <errno.h> 170#include <errno.h>
157#include <sys/types.h> 171#include <sys/types.h>
158#include <time.h> 172#include <time.h>
173#include <limits.h>
159 174
160#include <signal.h> 175#include <signal.h>
161 176
162#ifdef EV_H 177#ifdef EV_H
163# include EV_H 178# include EV_H
164#else 179#else
165# include "ev.h" 180# include "ev.h"
166#endif 181#endif
182
183EV_CPP(extern "C" {)
167 184
168#ifndef _WIN32 185#ifndef _WIN32
169# include <sys/time.h> 186# include <sys/time.h>
170# include <sys/wait.h> 187# include <sys/wait.h>
171# include <unistd.h> 188# include <unistd.h>
… …
174# define WIN32_LEAN_AND_MEAN 191# define WIN32_LEAN_AND_MEAN
175# include <windows.h> 192# include <windows.h>
176# ifndef EV_SELECT_IS_WINSOCKET 193# ifndef EV_SELECT_IS_WINSOCKET
177# define EV_SELECT_IS_WINSOCKET 1 194# define EV_SELECT_IS_WINSOCKET 1
178# endif 195# endif
196# undef EV_AVOID_STDIO
179#endif 197#endif
198
199/* OS X, in its infinite idiocy, actually HARDCODES
200 * a limit of 1024 into their select. Where people have brains,
201 * OS X engineers apparently have a vacuum. Or maybe they were
202 * ordered to have a vacuum, or they do anything for money.
203 * This might help. Or not.
204 */
205#define _DARWIN_UNLIMITED_SELECT 1
180 206
181/* this block tries to deduce configuration from header-defined symbols and defaults */ 207/* this block tries to deduce configuration from header-defined symbols and defaults */
208
209/* try to deduce the maximum number of signals on this platform */
210#if defined (EV_NSIG)
211/* use what's provided */
212#elif defined (NSIG)
213# define EV_NSIG (NSIG)
214#elif defined(_NSIG)
215# define EV_NSIG (_NSIG)
216#elif defined (SIGMAX)
217# define EV_NSIG (SIGMAX+1)
218#elif defined (SIG_MAX)
219# define EV_NSIG (SIG_MAX+1)
220#elif defined (_SIG_MAX)
221# define EV_NSIG (_SIG_MAX+1)
222#elif defined (MAXSIG)
223# define EV_NSIG (MAXSIG+1)
224#elif defined (MAX_SIG)
225# define EV_NSIG (MAX_SIG+1)
226#elif defined (SIGARRAYSIZE)
227# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
228#elif defined (_sys_nsig)
229# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
230#else
231# error "unable to find value for NSIG, please report"
232/* to make it compile regardless, just remove the above line, */
233/* but consider reporting it, too! :) */
234# define EV_NSIG 65
235#endif
182 236
183#ifndef EV_USE_CLOCK_SYSCALL 237#ifndef EV_USE_CLOCK_SYSCALL
184# if __linux && __GLIBC__ >= 2 238# if __linux && __GLIBC__ >= 2
185# define EV_USE_CLOCK_SYSCALL 1 239# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
186# else 240# else
187# define EV_USE_CLOCK_SYSCALL 0 241# define EV_USE_CLOCK_SYSCALL 0
188# endif 242# endif
189#endif 243#endif
190 244
191#ifndef EV_USE_MONOTONIC 245#ifndef EV_USE_MONOTONIC
192# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 246# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
193# define EV_USE_MONOTONIC 1 247# define EV_USE_MONOTONIC EV_FEATURE_OS
194# else 248# else
195# define EV_USE_MONOTONIC 0 249# define EV_USE_MONOTONIC 0
196# endif 250# endif
197#endif 251#endif
198 252
… …
200# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 254# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
201#endif 255#endif
202 256
203#ifndef EV_USE_NANOSLEEP 257#ifndef EV_USE_NANOSLEEP
204# if _POSIX_C_SOURCE >= 199309L 258# if _POSIX_C_SOURCE >= 199309L
205# define EV_USE_NANOSLEEP 1 259# define EV_USE_NANOSLEEP EV_FEATURE_OS
206# else 260# else
207# define EV_USE_NANOSLEEP 0 261# define EV_USE_NANOSLEEP 0
208# endif 262# endif
209#endif 263#endif
210 264
211#ifndef EV_USE_SELECT 265#ifndef EV_USE_SELECT
212# define EV_USE_SELECT 1 266# define EV_USE_SELECT EV_FEATURE_BACKENDS
213#endif 267#endif
214 268
215#ifndef EV_USE_POLL 269#ifndef EV_USE_POLL
216# ifdef _WIN32 270# ifdef _WIN32
217# define EV_USE_POLL 0 271# define EV_USE_POLL 0
218# else 272# else
219# define EV_USE_POLL 1 273# define EV_USE_POLL EV_FEATURE_BACKENDS
220# endif 274# endif
221#endif 275#endif
222 276
223#ifndef EV_USE_EPOLL 277#ifndef EV_USE_EPOLL
224# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 278# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
225# define EV_USE_EPOLL 1 279# define EV_USE_EPOLL EV_FEATURE_BACKENDS
226# else 280# else
227# define EV_USE_EPOLL 0 281# define EV_USE_EPOLL 0
228# endif 282# endif
229#endif 283#endif
230 284
… …
236# define EV_USE_PORT 0 290# define EV_USE_PORT 0
237#endif 291#endif
238 292
239#ifndef EV_USE_INOTIFY 293#ifndef EV_USE_INOTIFY
240# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 294# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
241# define EV_USE_INOTIFY 1 295# define EV_USE_INOTIFY EV_FEATURE_OS
242# else 296# else
243# define EV_USE_INOTIFY 0 297# define EV_USE_INOTIFY 0
244# endif 298# endif
245#endif 299#endif
246 300
247#ifndef EV_PID_HASHSIZE 301#ifndef EV_PID_HASHSIZE
248# if EV_MINIMAL 302# 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 303#endif
254 304
255#ifndef EV_INOTIFY_HASHSIZE 305#ifndef EV_INOTIFY_HASHSIZE
256# if EV_MINIMAL 306# 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 307#endif
262 308
263#ifndef EV_USE_EVENTFD 309#ifndef EV_USE_EVENTFD
264# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 310# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
265# define EV_USE_EVENTFD 1 311# define EV_USE_EVENTFD EV_FEATURE_OS
266# else 312# else
267# define EV_USE_EVENTFD 0 313# define EV_USE_EVENTFD 0
314# endif
315#endif
316
317#ifndef EV_USE_SIGNALFD
318# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
319# define EV_USE_SIGNALFD EV_FEATURE_OS
320# else
321# define EV_USE_SIGNALFD 0
268# endif 322# endif
269#endif 323#endif
270 324
271#if 0 /* debugging */ 325#if 0 /* debugging */
272# define EV_VERIFY 3 326# define EV_VERIFY 3
273# define EV_USE_4HEAP 1 327# define EV_USE_4HEAP 1
274# define EV_HEAP_CACHE_AT 1 328# define EV_HEAP_CACHE_AT 1
275#endif 329#endif
276 330
277#ifndef EV_VERIFY 331#ifndef EV_VERIFY
278# define EV_VERIFY !EV_MINIMAL 332# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
279#endif 333#endif
280 334
281#ifndef EV_USE_4HEAP 335#ifndef EV_USE_4HEAP
282# define EV_USE_4HEAP !EV_MINIMAL 336# define EV_USE_4HEAP EV_FEATURE_DATA
283#endif 337#endif
284 338
285#ifndef EV_HEAP_CACHE_AT 339#ifndef EV_HEAP_CACHE_AT
286# define EV_HEAP_CACHE_AT !EV_MINIMAL 340# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
287#endif 341#endif
288 342
289/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 343/* 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. */ 344/* which makes programs even slower. might work on other unices, too. */
291#if EV_USE_CLOCK_SYSCALL 345#if EV_USE_CLOCK_SYSCALL
… …
300# endif 354# endif
301#endif 355#endif
302 356
303/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 357/* this block fixes any misconfiguration where we know we run into trouble otherwise */
304 358
359#ifdef _AIX
360/* AIX has a completely broken poll.h header */
361# undef EV_USE_POLL
362# define EV_USE_POLL 0
363#endif
364
305#ifndef CLOCK_MONOTONIC 365#ifndef CLOCK_MONOTONIC
306# undef EV_USE_MONOTONIC 366# undef EV_USE_MONOTONIC
307# define EV_USE_MONOTONIC 0 367# define EV_USE_MONOTONIC 0
308#endif 368#endif
309 369
… …
316# undef EV_USE_INOTIFY 376# undef EV_USE_INOTIFY
317# define EV_USE_INOTIFY 0 377# define EV_USE_INOTIFY 0
318#endif 378#endif
319 379
320#if !EV_USE_NANOSLEEP 380#if !EV_USE_NANOSLEEP
321# ifndef _WIN32 381/* hp-ux has it in sys/time.h, which we unconditionally include above */
382# if !defined(_WIN32) && !defined(__hpux)
322# include <sys/select.h> 383# include <sys/select.h>
323# endif 384# endif
324#endif 385#endif
325 386
326#if EV_USE_INOTIFY 387#if EV_USE_INOTIFY
327# include <sys/utsname.h>
328# include <sys/statfs.h> 388# include <sys/statfs.h>
329# include <sys/inotify.h> 389# include <sys/inotify.h>
330/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 390/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
331# ifndef IN_DONT_FOLLOW 391# ifndef IN_DONT_FOLLOW
332# undef EV_USE_INOTIFY 392# undef EV_USE_INOTIFY
… …
339#endif 399#endif
340 400
341#if EV_USE_EVENTFD 401#if EV_USE_EVENTFD
342/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 402/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
343# include <stdint.h> 403# include <stdint.h>
344# ifdef __cplusplus 404# ifndef EFD_NONBLOCK
345extern "C" { 405# define EFD_NONBLOCK O_NONBLOCK
346# endif 406# endif
347int eventfd (unsigned int initval, int flags); 407# ifndef EFD_CLOEXEC
348# ifdef __cplusplus 408# ifdef O_CLOEXEC
349} 409# define EFD_CLOEXEC O_CLOEXEC
410# else
411# define EFD_CLOEXEC 02000000
412# endif
350# endif 413# endif
414EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
415#endif
416
417#if EV_USE_SIGNALFD
418/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
419# include <stdint.h>
420# ifndef SFD_NONBLOCK
421# define SFD_NONBLOCK O_NONBLOCK
422# endif
423# ifndef SFD_CLOEXEC
424# ifdef O_CLOEXEC
425# define SFD_CLOEXEC O_CLOEXEC
426# else
427# define SFD_CLOEXEC 02000000
428# endif
429# endif
430EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
431
432struct signalfd_siginfo
433{
434 uint32_t ssi_signo;
435 char pad[128 - sizeof (uint32_t)];
436};
351#endif 437#endif
352 438
353/**/ 439/**/
354 440
355#if EV_VERIFY >= 3 441#if EV_VERIFY >= 3
356# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 442# define EV_FREQUENT_CHECK ev_verify (EV_A)
357#else 443#else
358# define EV_FREQUENT_CHECK do { } while (0) 444# define EV_FREQUENT_CHECK do { } while (0)
359#endif 445#endif
360 446
361/* 447/*
… …
368 */ 454 */
369#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 455#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
370 456
371#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 457#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) */ 458#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 */ 459
460#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
461#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
374 462
375#if __GNUC__ >= 4 463#if __GNUC__ >= 4
376# define expect(expr,value) __builtin_expect ((expr),(value)) 464# define expect(expr,value) __builtin_expect ((expr),(value))
377# define noinline __attribute__ ((noinline)) 465# define noinline __attribute__ ((noinline))
378#else 466#else
… …
385 473
386#define expect_false(expr) expect ((expr) != 0, 0) 474#define expect_false(expr) expect ((expr) != 0, 0)
387#define expect_true(expr) expect ((expr) != 0, 1) 475#define expect_true(expr) expect ((expr) != 0, 1)
388#define inline_size static inline 476#define inline_size static inline
389 477
390#if EV_MINIMAL 478#if EV_FEATURE_CODE
479# define inline_speed static inline
480#else
391# define inline_speed static noinline 481# define inline_speed static noinline
482#endif
483
484#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
485
486#if EV_MINPRI == EV_MAXPRI
487# define ABSPRI(w) (((W)w), 0)
392#else 488#else
393# define inline_speed static inline
394#endif
395
396#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
397#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 489# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
490#endif
398 491
399#define EMPTY /* required for microsofts broken pseudo-c compiler */ 492#define EMPTY /* required for microsofts broken pseudo-c compiler */
400#define EMPTY2(a,b) /* used to suppress some warnings */ 493#define EMPTY2(a,b) /* used to suppress some warnings */
401 494
402typedef ev_watcher *W; 495typedef ev_watcher *W;
… …
406#define ev_active(w) ((W)(w))->active 499#define ev_active(w) ((W)(w))->active
407#define ev_at(w) ((WT)(w))->at 500#define ev_at(w) ((WT)(w))->at
408 501
409#if EV_USE_REALTIME 502#if EV_USE_REALTIME
410/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 503/* sig_atomic_t is used to avoid per-thread variables or locking but still */
411/* giving it a reasonably high chance of working on typical architetcures */ 504/* giving it a reasonably high chance of working on typical architectures */
412static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 505static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
413#endif 506#endif
414 507
415#if EV_USE_MONOTONIC 508#if EV_USE_MONOTONIC
416static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 509static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
417#endif 510#endif
418 511
512#ifndef EV_FD_TO_WIN32_HANDLE
513# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
514#endif
515#ifndef EV_WIN32_HANDLE_TO_FD
516# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
517#endif
518#ifndef EV_WIN32_CLOSE_FD
519# define EV_WIN32_CLOSE_FD(fd) close (fd)
520#endif
521
419#ifdef _WIN32 522#ifdef _WIN32
420# include "ev_win32.c" 523# include "ev_win32.c"
421#endif 524#endif
422 525
423/*****************************************************************************/ 526/*****************************************************************************/
527
528#ifdef __linux
529# include <sys/utsname.h>
530#endif
531
532static unsigned int noinline
533ev_linux_version (void)
534{
535#ifdef __linux
536 unsigned int v = 0;
537 struct utsname buf;
538 int i;
539 char *p = buf.release;
540
541 if (uname (&buf))
542 return 0;
543
544 for (i = 3+1; --i; )
545 {
546 unsigned int c = 0;
547
548 for (;;)
549 {
550 if (*p >= '0' && *p <= '9')
551 c = c * 10 + *p++ - '0';
552 else
553 {
554 p += *p == '.';
555 break;
556 }
557 }
558
559 v = (v << 8) | c;
560 }
561
562 return v;
563#else
564 return 0;
565#endif
566}
567
568/*****************************************************************************/
569
570#if EV_AVOID_STDIO
571static void noinline
572ev_printerr (const char *msg)
573{
574 write (STDERR_FILENO, msg, strlen (msg));
575}
576#endif
424 577
425static void (*syserr_cb)(const char *msg); 578static void (*syserr_cb)(const char *msg);
426 579
427void 580void
428ev_set_syserr_cb (void (*cb)(const char *msg)) 581ev_set_syserr_cb (void (*cb)(const char *msg))
… …
438 591
439 if (syserr_cb) 592 if (syserr_cb)
440 syserr_cb (msg); 593 syserr_cb (msg);
441 else 594 else
442 { 595 {
596#if EV_AVOID_STDIO
597 ev_printerr (msg);
598 ev_printerr (": ");
599 ev_printerr (strerror (errno));
600 ev_printerr ("\n");
601#else
443 perror (msg); 602 perror (msg);
603#endif
444 abort (); 604 abort ();
445 } 605 }
446} 606}
447 607
448static void * 608static void *
449ev_realloc_emul (void *ptr, long size) 609ev_realloc_emul (void *ptr, long size)
450{ 610{
611#if __GLIBC__
612 return realloc (ptr, size);
613#else
451 /* some systems, notably openbsd and darwin, fail to properly 614 /* some systems, notably openbsd and darwin, fail to properly
452 * implement realloc (x, 0) (as required by both ansi c-98 and 615 * implement realloc (x, 0) (as required by both ansi c-89 and
453 * the single unix specification, so work around them here. 616 * the single unix specification, so work around them here.
454 */ 617 */
455 618
456 if (size) 619 if (size)
457 return realloc (ptr, size); 620 return realloc (ptr, size);
458 621
459 free (ptr); 622 free (ptr);
460 return 0; 623 return 0;
624#endif
461} 625}
462 626
463static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 627static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
464 628
465void 629void
… …
473{ 637{
474 ptr = alloc (ptr, size); 638 ptr = alloc (ptr, size);
475 639
476 if (!ptr && size) 640 if (!ptr && size)
477 { 641 {
642#if EV_AVOID_STDIO
643 ev_printerr ("(libev) memory allocation failed, aborting.\n");
644#else
478 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 645 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
646#endif
479 abort (); 647 abort ();
480 } 648 }
481 649
482 return ptr; 650 return ptr;
483} 651}
… …
485#define ev_malloc(size) ev_realloc (0, (size)) 653#define ev_malloc(size) ev_realloc (0, (size))
486#define ev_free(ptr) ev_realloc ((ptr), 0) 654#define ev_free(ptr) ev_realloc ((ptr), 0)
487 655
488/*****************************************************************************/ 656/*****************************************************************************/
489 657
658/* set in reify when reification needed */
659#define EV_ANFD_REIFY 1
660
490/* file descriptor info structure */ 661/* file descriptor info structure */
491typedef struct 662typedef struct
492{ 663{
493 WL head; 664 WL head;
494 unsigned char events; /* the events watched for */ 665 unsigned char events; /* the events watched for */
495 unsigned char reify; /* flag set when this ANFD needs reification */ 666 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
496 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 667 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
497 unsigned char unused; 668 unsigned char unused;
498#if EV_USE_EPOLL 669#if EV_USE_EPOLL
499 unsigned int egen; /* generation counter to counter epoll bugs */ 670 unsigned int egen; /* generation counter to counter epoll bugs */
500#endif 671#endif
501#if EV_SELECT_IS_WINSOCKET 672#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
502 SOCKET handle; 673 SOCKET handle;
674#endif
675#if EV_USE_IOCP
676 OVERLAPPED or, ow;
503#endif 677#endif
504} ANFD; 678} ANFD;
505 679
506/* stores the pending event set for a given watcher */ 680/* stores the pending event set for a given watcher */
507typedef struct 681typedef struct
… …
562 736
563 static int ev_default_loop_ptr; 737 static int ev_default_loop_ptr;
564 738
565#endif 739#endif
566 740
741#if EV_FEATURE_API
742# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
743# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
744# define EV_INVOKE_PENDING invoke_cb (EV_A)
745#else
746# define EV_RELEASE_CB (void)0
747# define EV_ACQUIRE_CB (void)0
748# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
749#endif
750
751#define EVBREAK_RECURSE 0x80
752
567/*****************************************************************************/ 753/*****************************************************************************/
568 754
569#ifndef EV_HAVE_EV_TIME 755#ifndef EV_HAVE_EV_TIME
570ev_tstamp 756ev_tstamp
571ev_time (void) 757ev_time (void)
… …
614 if (delay > 0.) 800 if (delay > 0.)
615 { 801 {
616#if EV_USE_NANOSLEEP 802#if EV_USE_NANOSLEEP
617 struct timespec ts; 803 struct timespec ts;
618 804
619 ts.tv_sec = (time_t)delay; 805 EV_TS_SET (ts, delay);
620 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
621
622 nanosleep (&ts, 0); 806 nanosleep (&ts, 0);
623#elif defined(_WIN32) 807#elif defined(_WIN32)
624 Sleep ((unsigned long)(delay * 1e3)); 808 Sleep ((unsigned long)(delay * 1e3));
625#else 809#else
626 struct timeval tv; 810 struct timeval tv;
627 811
628 tv.tv_sec = (time_t)delay;
629 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
630
631 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 812 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
632 /* somehting not guaranteed by newer posix versions, but guaranteed */ 813 /* something not guaranteed by newer posix versions, but guaranteed */
633 /* by older ones */ 814 /* by older ones */
815 EV_TV_SET (tv, delay);
634 select (0, 0, 0, 0, &tv); 816 select (0, 0, 0, 0, &tv);
635#endif 817#endif
636 } 818 }
637} 819}
638 820
821inline_speed int
822ev_timeout_to_ms (ev_tstamp timeout)
823{
824 int ms = timeout * 1000. + .999999;
825
826 return expect_true (ms) ? ms : timeout < 1e-6 ? 0 : 1;
827}
828
639/*****************************************************************************/ 829/*****************************************************************************/
640 830
641#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 831#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
642 832
643/* find a suitable new size for the given array, */ 833/* find a suitable new size for the given array, */
644/* hopefully by rounding to a ncie-to-malloc size */ 834/* hopefully by rounding to a nice-to-malloc size */
645inline_size int 835inline_size int
646array_nextsize (int elem, int cur, int cnt) 836array_nextsize (int elem, int cur, int cnt)
647{ 837{
648 int ncur = cur + 1; 838 int ncur = cur + 1;
649 839
… …
745} 935}
746 936
747/*****************************************************************************/ 937/*****************************************************************************/
748 938
749inline_speed void 939inline_speed void
750fd_event (EV_P_ int fd, int revents) 940fd_event_nocheck (EV_P_ int fd, int revents)
751{ 941{
752 ANFD *anfd = anfds + fd; 942 ANFD *anfd = anfds + fd;
753 ev_io *w; 943 ev_io *w;
754 944
755 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 945 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
759 if (ev) 949 if (ev)
760 ev_feed_event (EV_A_ (W)w, ev); 950 ev_feed_event (EV_A_ (W)w, ev);
761 } 951 }
762} 952}
763 953
954/* do not submit kernel events for fds that have reify set */
955/* because that means they changed while we were polling for new events */
956inline_speed void
957fd_event (EV_P_ int fd, int revents)
958{
959 ANFD *anfd = anfds + fd;
960
961 if (expect_true (!anfd->reify))
962 fd_event_nocheck (EV_A_ fd, revents);
963}
964
764void 965void
765ev_feed_fd_event (EV_P_ int fd, int revents) 966ev_feed_fd_event (EV_P_ int fd, int revents)
766{ 967{
767 if (fd >= 0 && fd < anfdmax) 968 if (fd >= 0 && fd < anfdmax)
768 fd_event (EV_A_ fd, revents); 969 fd_event_nocheck (EV_A_ fd, revents);
769} 970}
770 971
771/* make sure the external fd watch events are in-sync */ 972/* make sure the external fd watch events are in-sync */
772/* with the kernel/libev internal state */ 973/* with the kernel/libev internal state */
773inline_size void 974inline_size void
774fd_reify (EV_P) 975fd_reify (EV_P)
775{ 976{
776 int i; 977 int i;
777 978
979#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
980 for (i = 0; i < fdchangecnt; ++i)
981 {
982 int fd = fdchanges [i];
983 ANFD *anfd = anfds + fd;
984
985 if (anfd->reify & EV__IOFDSET)
986 {
987 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
988
989 if (handle != anfd->handle)
990 {
991 unsigned long arg;
992
993 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
994
995 /* handle changed, but fd didn't - we need to do it in two steps */
996 backend_modify (EV_A_ fd, anfd->events, 0);
997 anfd->events = 0;
998 anfd->handle = handle;
999 }
1000 }
1001 }
1002#endif
1003
778 for (i = 0; i < fdchangecnt; ++i) 1004 for (i = 0; i < fdchangecnt; ++i)
779 { 1005 {
780 int fd = fdchanges [i]; 1006 int fd = fdchanges [i];
781 ANFD *anfd = anfds + fd; 1007 ANFD *anfd = anfds + fd;
782 ev_io *w; 1008 ev_io *w;
783 1009
784 unsigned char events = 0; 1010 unsigned char o_events = anfd->events;
1011 unsigned char o_reify = anfd->reify;
785 1012
786 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1013 anfd->reify = 0;
787 events |= (unsigned char)w->events;
788 1014
789#if EV_SELECT_IS_WINSOCKET 1015 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
790 if (events)
791 { 1016 {
792 unsigned long arg; 1017 anfd->events = 0;
793 #ifdef EV_FD_TO_WIN32_HANDLE 1018
794 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1019 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
795 #else 1020 anfd->events |= (unsigned char)w->events;
796 anfd->handle = _get_osfhandle (fd); 1021
797 #endif 1022 if (o_events != anfd->events)
798 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1023 o_reify = EV__IOFDSET; /* actually |= */
799 } 1024 }
800#endif
801 1025
802 { 1026 if (o_reify & EV__IOFDSET)
803 unsigned char o_events = anfd->events;
804 unsigned char o_reify = anfd->reify;
805
806 anfd->reify = 0;
807 anfd->events = events;
808
809 if (o_events != events || o_reify & EV__IOFDSET)
810 backend_modify (EV_A_ fd, o_events, events); 1027 backend_modify (EV_A_ fd, o_events, anfd->events);
811 }
812 } 1028 }
813 1029
814 fdchangecnt = 0; 1030 fdchangecnt = 0;
815} 1031}
816 1032
… …
840 ev_io_stop (EV_A_ w); 1056 ev_io_stop (EV_A_ w);
841 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1057 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
842 } 1058 }
843} 1059}
844 1060
845/* check whether the given fd is atcually valid, for error recovery */ 1061/* check whether the given fd is actually valid, for error recovery */
846inline_size int 1062inline_size int
847fd_valid (int fd) 1063fd_valid (int fd)
848{ 1064{
849#ifdef _WIN32 1065#ifdef _WIN32
850 return _get_osfhandle (fd) != -1; 1066 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
851#else 1067#else
852 return fcntl (fd, F_GETFD) != -1; 1068 return fcntl (fd, F_GETFD) != -1;
853#endif 1069#endif
854} 1070}
855 1071
… …
873 1089
874 for (fd = anfdmax; fd--; ) 1090 for (fd = anfdmax; fd--; )
875 if (anfds [fd].events) 1091 if (anfds [fd].events)
876 { 1092 {
877 fd_kill (EV_A_ fd); 1093 fd_kill (EV_A_ fd);
878 return; 1094 break;
879 } 1095 }
880} 1096}
881 1097
882/* usually called after fork if backend needs to re-arm all fds from scratch */ 1098/* usually called after fork if backend needs to re-arm all fds from scratch */
883static void noinline 1099static void noinline
… …
888 for (fd = 0; fd < anfdmax; ++fd) 1104 for (fd = 0; fd < anfdmax; ++fd)
889 if (anfds [fd].events) 1105 if (anfds [fd].events)
890 { 1106 {
891 anfds [fd].events = 0; 1107 anfds [fd].events = 0;
892 anfds [fd].emask = 0; 1108 anfds [fd].emask = 0;
893 fd_change (EV_A_ fd, EV__IOFDSET | 1); 1109 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
894 } 1110 }
895} 1111}
896 1112
1113/* used to prepare libev internal fd's */
1114/* this is not fork-safe */
1115inline_speed void
1116fd_intern (int fd)
1117{
1118#ifdef _WIN32
1119 unsigned long arg = 1;
1120 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1121#else
1122 fcntl (fd, F_SETFD, FD_CLOEXEC);
1123 fcntl (fd, F_SETFL, O_NONBLOCK);
1124#endif
1125}
1126
897/*****************************************************************************/ 1127/*****************************************************************************/
898 1128
899/* 1129/*
900 * the heap functions want a real array index. array index 0 uis guaranteed to not 1130 * the heap functions want a real array index. array index 0 is guaranteed to not
901 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1131 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
902 * the branching factor of the d-tree. 1132 * the branching factor of the d-tree.
903 */ 1133 */
904 1134
905/* 1135/*
… …
973 1203
974 for (;;) 1204 for (;;)
975 { 1205 {
976 int c = k << 1; 1206 int c = k << 1;
977 1207
978 if (c > N + HEAP0 - 1) 1208 if (c >= N + HEAP0)
979 break; 1209 break;
980 1210
981 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1211 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
982 ? 1 : 0; 1212 ? 1 : 0;
983 1213
… …
1019 1249
1020/* move an element suitably so it is in a correct place */ 1250/* move an element suitably so it is in a correct place */
1021inline_size void 1251inline_size void
1022adjustheap (ANHE *heap, int N, int k) 1252adjustheap (ANHE *heap, int N, int k)
1023{ 1253{
1024 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1254 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1025 upheap (heap, k); 1255 upheap (heap, k);
1026 else 1256 else
1027 downheap (heap, N, k); 1257 downheap (heap, N, k);
1028} 1258}
1029 1259
… …
1042/*****************************************************************************/ 1272/*****************************************************************************/
1043 1273
1044/* associate signal watchers to a signal signal */ 1274/* associate signal watchers to a signal signal */
1045typedef struct 1275typedef struct
1046{ 1276{
1277 EV_ATOMIC_T pending;
1278#if EV_MULTIPLICITY
1279 EV_P;
1280#endif
1047 WL head; 1281 WL head;
1048 EV_ATOMIC_T gotsig;
1049} ANSIG; 1282} ANSIG;
1050 1283
1051static ANSIG *signals; 1284static ANSIG signals [EV_NSIG - 1];
1052static int signalmax;
1053
1054static EV_ATOMIC_T gotsig;
1055 1285
1056/*****************************************************************************/ 1286/*****************************************************************************/
1057 1287
1058/* used to prepare libev internal fd's */ 1288#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1059/* this is not fork-safe */
1060inline_speed void
1061fd_intern (int fd)
1062{
1063#ifdef _WIN32
1064 unsigned long arg = 1;
1065 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1066#else
1067 fcntl (fd, F_SETFD, FD_CLOEXEC);
1068 fcntl (fd, F_SETFL, O_NONBLOCK);
1069#endif
1070}
1071 1289
1072static void noinline 1290static void noinline
1073evpipe_init (EV_P) 1291evpipe_init (EV_P)
1074{ 1292{
1075 if (!ev_is_active (&pipe_w)) 1293 if (!ev_is_active (&pipe_w))
1076 { 1294 {
1077#if EV_USE_EVENTFD 1295# if EV_USE_EVENTFD
1296 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1297 if (evfd < 0 && errno == EINVAL)
1078 if ((evfd = eventfd (0, 0)) >= 0) 1298 evfd = eventfd (0, 0);
1299
1300 if (evfd >= 0)
1079 { 1301 {
1080 evpipe [0] = -1; 1302 evpipe [0] = -1;
1081 fd_intern (evfd); 1303 fd_intern (evfd); /* doing it twice doesn't hurt */
1082 ev_io_set (&pipe_w, evfd, EV_READ); 1304 ev_io_set (&pipe_w, evfd, EV_READ);
1083 } 1305 }
1084 else 1306 else
1085#endif 1307# endif
1086 { 1308 {
1087 while (pipe (evpipe)) 1309 while (pipe (evpipe))
1088 ev_syserr ("(libev) error creating signal/async pipe"); 1310 ev_syserr ("(libev) error creating signal/async pipe");
1089 1311
1090 fd_intern (evpipe [0]); 1312 fd_intern (evpipe [0]);
… …
1101evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1323evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1102{ 1324{
1103 if (!*flag) 1325 if (!*flag)
1104 { 1326 {
1105 int old_errno = errno; /* save errno because write might clobber it */ 1327 int old_errno = errno; /* save errno because write might clobber it */
1328 char dummy;
1106 1329
1107 *flag = 1; 1330 *flag = 1;
1108 1331
1109#if EV_USE_EVENTFD 1332#if EV_USE_EVENTFD
1110 if (evfd >= 0) 1333 if (evfd >= 0)
… …
1112 uint64_t counter = 1; 1335 uint64_t counter = 1;
1113 write (evfd, &counter, sizeof (uint64_t)); 1336 write (evfd, &counter, sizeof (uint64_t));
1114 } 1337 }
1115 else 1338 else
1116#endif 1339#endif
1340 /* win32 people keep sending patches that change this write() to send() */
1341 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1342 /* so when you think this write should be a send instead, please find out */
1343 /* where your send() is from - it's definitely not the microsoft send, and */
1344 /* tell me. thank you. */
1117 write (evpipe [1], &old_errno, 1); 1345 write (evpipe [1], &dummy, 1);
1118 1346
1119 errno = old_errno; 1347 errno = old_errno;
1120 } 1348 }
1121} 1349}
1122 1350
1123/* called whenever the libev signal pipe */ 1351/* called whenever the libev signal pipe */
1124/* got some events (signal, async) */ 1352/* got some events (signal, async) */
1125static void 1353static void
1126pipecb (EV_P_ ev_io *iow, int revents) 1354pipecb (EV_P_ ev_io *iow, int revents)
1127{ 1355{
1356 int i;
1357
1128#if EV_USE_EVENTFD 1358#if EV_USE_EVENTFD
1129 if (evfd >= 0) 1359 if (evfd >= 0)
1130 { 1360 {
1131 uint64_t counter; 1361 uint64_t counter;
1132 read (evfd, &counter, sizeof (uint64_t)); 1362 read (evfd, &counter, sizeof (uint64_t));
1133 } 1363 }
1134 else 1364 else
1135#endif 1365#endif
1136 { 1366 {
1137 char dummy; 1367 char dummy;
1368 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1138 read (evpipe [0], &dummy, 1); 1369 read (evpipe [0], &dummy, 1);
1139 } 1370 }
1140 1371
1141 if (gotsig && ev_is_default_loop (EV_A)) 1372#if EV_SIGNAL_ENABLE
1142 { 1373 if (sig_pending)
1143 int signum; 1374 {
1144 gotsig = 0; 1375 sig_pending = 0;
1145 1376
1146 for (signum = signalmax; signum--; ) 1377 for (i = EV_NSIG - 1; i--; )
1147 if (signals [signum].gotsig) 1378 if (expect_false (signals [i].pending))
1148 ev_feed_signal_event (EV_A_ signum + 1); 1379 ev_feed_signal_event (EV_A_ i + 1);
1149 } 1380 }
1381#endif
1150 1382
1151#if EV_ASYNC_ENABLE 1383#if EV_ASYNC_ENABLE
1152 if (gotasync) 1384 if (async_pending)
1153 { 1385 {
1154 int i; 1386 async_pending = 0;
1155 gotasync = 0;
1156 1387
1157 for (i = asynccnt; i--; ) 1388 for (i = asynccnt; i--; )
1158 if (asyncs [i]->sent) 1389 if (asyncs [i]->sent)
1159 { 1390 {
1160 asyncs [i]->sent = 0; 1391 asyncs [i]->sent = 0;
… …
1164#endif 1395#endif
1165} 1396}
1166 1397
1167/*****************************************************************************/ 1398/*****************************************************************************/
1168 1399
1400void
1401ev_feed_signal (int signum)
1402{
1403#if EV_MULTIPLICITY
1404 EV_P = signals [signum - 1].loop;
1405
1406 if (!EV_A)
1407 return;
1408#endif
1409
1410 signals [signum - 1].pending = 1;
1411 evpipe_write (EV_A_ &sig_pending);
1412}
1413
1169static void 1414static void
1170ev_sighandler (int signum) 1415ev_sighandler (int signum)
1171{ 1416{
1172#if EV_MULTIPLICITY
1173 struct ev_loop *loop = &default_loop_struct;
1174#endif
1175
1176#if _WIN32 1417#ifdef _WIN32
1177 signal (signum, ev_sighandler); 1418 signal (signum, ev_sighandler);
1178#endif 1419#endif
1179 1420
1180 signals [signum - 1].gotsig = 1; 1421 ev_feed_signal (signum);
1181 evpipe_write (EV_A_ &gotsig);
1182} 1422}
1183 1423
1184void noinline 1424void noinline
1185ev_feed_signal_event (EV_P_ int signum) 1425ev_feed_signal_event (EV_P_ int signum)
1186{ 1426{
1187 WL w; 1427 WL w;
1188 1428
1429 if (expect_false (signum <= 0 || signum > EV_NSIG))
1430 return;
1431
1432 --signum;
1433
1189#if EV_MULTIPLICITY 1434#if EV_MULTIPLICITY
1190 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1435 /* it is permissible to try to feed a signal to the wrong loop */
1191#endif 1436 /* or, likely more useful, feeding a signal nobody is waiting for */
1192 1437
1193 --signum; 1438 if (expect_false (signals [signum].loop != EV_A))
1194
1195 if (signum < 0 || signum >= signalmax)
1196 return; 1439 return;
1440#endif
1197 1441
1198 signals [signum].gotsig = 0; 1442 signals [signum].pending = 0;
1199 1443
1200 for (w = signals [signum].head; w; w = w->next) 1444 for (w = signals [signum].head; w; w = w->next)
1201 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1445 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1202} 1446}
1203 1447
1448#if EV_USE_SIGNALFD
1449static void
1450sigfdcb (EV_P_ ev_io *iow, int revents)
1451{
1452 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1453
1454 for (;;)
1455 {
1456 ssize_t res = read (sigfd, si, sizeof (si));
1457
1458 /* not ISO-C, as res might be -1, but works with SuS */
1459 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1460 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1461
1462 if (res < (ssize_t)sizeof (si))
1463 break;
1464 }
1465}
1466#endif
1467
1468#endif
1469
1204/*****************************************************************************/ 1470/*****************************************************************************/
1205 1471
1472#if EV_CHILD_ENABLE
1206static WL childs [EV_PID_HASHSIZE]; 1473static WL childs [EV_PID_HASHSIZE];
1207
1208#ifndef _WIN32
1209 1474
1210static ev_signal childev; 1475static ev_signal childev;
1211 1476
1212#ifndef WIFCONTINUED 1477#ifndef WIFCONTINUED
1213# define WIFCONTINUED(status) 0 1478# define WIFCONTINUED(status) 0
… …
1218child_reap (EV_P_ int chain, int pid, int status) 1483child_reap (EV_P_ int chain, int pid, int status)
1219{ 1484{
1220 ev_child *w; 1485 ev_child *w;
1221 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1486 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1222 1487
1223 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1488 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1224 { 1489 {
1225 if ((w->pid == pid || !w->pid) 1490 if ((w->pid == pid || !w->pid)
1226 && (!traced || (w->flags & 1))) 1491 && (!traced || (w->flags & 1)))
1227 { 1492 {
1228 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1493 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1253 /* make sure we are called again until all children have been reaped */ 1518 /* make sure we are called again until all children have been reaped */
1254 /* we need to do it this way so that the callback gets called before we continue */ 1519 /* we need to do it this way so that the callback gets called before we continue */
1255 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1520 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1256 1521
1257 child_reap (EV_A_ pid, pid, status); 1522 child_reap (EV_A_ pid, pid, status);
1258 if (EV_PID_HASHSIZE > 1) 1523 if ((EV_PID_HASHSIZE) > 1)
1259 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1524 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1260} 1525}
1261 1526
1262#endif 1527#endif
1263 1528
1264/*****************************************************************************/ 1529/*****************************************************************************/
1265 1530
1531#if EV_USE_IOCP
1532# include "ev_iocp.c"
1533#endif
1266#if EV_USE_PORT 1534#if EV_USE_PORT
1267# include "ev_port.c" 1535# include "ev_port.c"
1268#endif 1536#endif
1269#if EV_USE_KQUEUE 1537#if EV_USE_KQUEUE
1270# include "ev_kqueue.c" 1538# include "ev_kqueue.c"
… …
1330#ifdef __APPLE__ 1598#ifdef __APPLE__
1331 /* only select works correctly on that "unix-certified" platform */ 1599 /* only select works correctly on that "unix-certified" platform */
1332 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 1600 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1333 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 1601 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1334#endif 1602#endif
1603#ifdef __FreeBSD__
1604 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1605#endif
1335 1606
1336 return flags; 1607 return flags;
1337} 1608}
1338 1609
1339unsigned int 1610unsigned int
1340ev_embeddable_backends (void) 1611ev_embeddable_backends (void)
1341{ 1612{
1342 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1613 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1343 1614
1344 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 1615 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1345 /* please fix it and tell me how to detect the fix */ 1616 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1346 flags &= ~EVBACKEND_EPOLL; 1617 flags &= ~EVBACKEND_EPOLL;
1347 1618
1348 return flags; 1619 return flags;
1349} 1620}
1350 1621
1351unsigned int 1622unsigned int
1352ev_backend (EV_P) 1623ev_backend (EV_P)
1353{ 1624{
1354 return backend; 1625 return backend;
1355} 1626}
1356 1627
1628#if EV_FEATURE_API
1357unsigned int 1629unsigned int
1358ev_loop_count (EV_P) 1630ev_iteration (EV_P)
1359{ 1631{
1360 return loop_count; 1632 return loop_count;
1361} 1633}
1362 1634
1363unsigned int 1635unsigned int
1364ev_loop_depth (EV_P) 1636ev_depth (EV_P)
1365{ 1637{
1366 return loop_depth; 1638 return loop_depth;
1367} 1639}
1368 1640
1369void 1641void
… …
1375void 1647void
1376ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1648ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1377{ 1649{
1378 timeout_blocktime = interval; 1650 timeout_blocktime = interval;
1379} 1651}
1652
1653void
1654ev_set_userdata (EV_P_ void *data)
1655{
1656 userdata = data;
1657}
1658
1659void *
1660ev_userdata (EV_P)
1661{
1662 return userdata;
1663}
1664
1665void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1666{
1667 invoke_cb = invoke_pending_cb;
1668}
1669
1670void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1671{
1672 release_cb = release;
1673 acquire_cb = acquire;
1674}
1675#endif
1380 1676
1381/* initialise a loop structure, must be zero-initialised */ 1677/* initialise a loop structure, must be zero-initialised */
1382static void noinline 1678static void noinline
1383loop_init (EV_P_ unsigned int flags) 1679loop_init (EV_P_ unsigned int flags)
1384{ 1680{
1385 if (!backend) 1681 if (!backend)
1386 { 1682 {
1683 origflags = flags;
1684
1387#if EV_USE_REALTIME 1685#if EV_USE_REALTIME
1388 if (!have_realtime) 1686 if (!have_realtime)
1389 { 1687 {
1390 struct timespec ts; 1688 struct timespec ts;
1391 1689
… …
1402 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1700 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1403 have_monotonic = 1; 1701 have_monotonic = 1;
1404 } 1702 }
1405#endif 1703#endif
1406 1704
1705 /* pid check not overridable via env */
1706#ifndef _WIN32
1707 if (flags & EVFLAG_FORKCHECK)
1708 curpid = getpid ();
1709#endif
1710
1711 if (!(flags & EVFLAG_NOENV)
1712 && !enable_secure ()
1713 && getenv ("LIBEV_FLAGS"))
1714 flags = atoi (getenv ("LIBEV_FLAGS"));
1715
1407 ev_rt_now = ev_time (); 1716 ev_rt_now = ev_time ();
1408 mn_now = get_clock (); 1717 mn_now = get_clock ();
1409 now_floor = mn_now; 1718 now_floor = mn_now;
1410 rtmn_diff = ev_rt_now - mn_now; 1719 rtmn_diff = ev_rt_now - mn_now;
1720#if EV_FEATURE_API
1721 invoke_cb = ev_invoke_pending;
1722#endif
1411 1723
1412 io_blocktime = 0.; 1724 io_blocktime = 0.;
1413 timeout_blocktime = 0.; 1725 timeout_blocktime = 0.;
1414 backend = 0; 1726 backend = 0;
1415 backend_fd = -1; 1727 backend_fd = -1;
1416 gotasync = 0; 1728 sig_pending = 0;
1729#if EV_ASYNC_ENABLE
1730 async_pending = 0;
1731#endif
1417#if EV_USE_INOTIFY 1732#if EV_USE_INOTIFY
1418 fs_fd = -2; 1733 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1419#endif 1734#endif
1420 1735#if EV_USE_SIGNALFD
1421 /* pid check not overridable via env */ 1736 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1422#ifndef _WIN32
1423 if (flags & EVFLAG_FORKCHECK)
1424 curpid = getpid ();
1425#endif 1737#endif
1426 1738
1427 if (!(flags & EVFLAG_NOENV) 1739 if (!(flags & EVBACKEND_MASK))
1428 && !enable_secure ()
1429 && getenv ("LIBEV_FLAGS"))
1430 flags = atoi (getenv ("LIBEV_FLAGS"));
1431
1432 if (!(flags & 0x0000ffffU))
1433 flags |= ev_recommended_backends (); 1740 flags |= ev_recommended_backends ();
1434 1741
1742#if EV_USE_IOCP
1743 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1744#endif
1435#if EV_USE_PORT 1745#if EV_USE_PORT
1436 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1746 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1437#endif 1747#endif
1438#if EV_USE_KQUEUE 1748#if EV_USE_KQUEUE
1439 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1749 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1448 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1758 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1449#endif 1759#endif
1450 1760
1451 ev_prepare_init (&pending_w, pendingcb); 1761 ev_prepare_init (&pending_w, pendingcb);
1452 1762
1763#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1453 ev_init (&pipe_w, pipecb); 1764 ev_init (&pipe_w, pipecb);
1454 ev_set_priority (&pipe_w, EV_MAXPRI); 1765 ev_set_priority (&pipe_w, EV_MAXPRI);
1766#endif
1455 } 1767 }
1456} 1768}
1457 1769
1458/* free up a loop structure */ 1770/* free up a loop structure */
1459static void noinline 1771void
1460loop_destroy (EV_P) 1772ev_loop_destroy (EV_P)
1461{ 1773{
1462 int i; 1774 int i;
1463 1775
1776#if EV_MULTIPLICITY
1777 /* mimic free (0) */
1778 if (!EV_A)
1779 return;
1780#endif
1781
1782#if EV_CLEANUP_ENABLE
1783 /* queue cleanup watchers (and execute them) */
1784 if (expect_false (cleanupcnt))
1785 {
1786 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1787 EV_INVOKE_PENDING;
1788 }
1789#endif
1790
1791#if EV_CHILD_ENABLE
1792 if (ev_is_active (&childev))
1793 {
1794 ev_ref (EV_A); /* child watcher */
1795 ev_signal_stop (EV_A_ &childev);
1796 }
1797#endif
1798
1464 if (ev_is_active (&pipe_w)) 1799 if (ev_is_active (&pipe_w))
1465 { 1800 {
1466 ev_ref (EV_A); /* signal watcher */ 1801 /*ev_ref (EV_A);*/
1467 ev_io_stop (EV_A_ &pipe_w); 1802 /*ev_io_stop (EV_A_ &pipe_w);*/
1468 1803
1469#if EV_USE_EVENTFD 1804#if EV_USE_EVENTFD
1470 if (evfd >= 0) 1805 if (evfd >= 0)
1471 close (evfd); 1806 close (evfd);
1472#endif 1807#endif
1473 1808
1474 if (evpipe [0] >= 0) 1809 if (evpipe [0] >= 0)
1475 { 1810 {
1476 close (evpipe [0]); 1811 EV_WIN32_CLOSE_FD (evpipe [0]);
1477 close (evpipe [1]); 1812 EV_WIN32_CLOSE_FD (evpipe [1]);
1478 } 1813 }
1479 } 1814 }
1815
1816#if EV_USE_SIGNALFD
1817 if (ev_is_active (&sigfd_w))
1818 close (sigfd);
1819#endif
1480 1820
1481#if EV_USE_INOTIFY 1821#if EV_USE_INOTIFY
1482 if (fs_fd >= 0) 1822 if (fs_fd >= 0)
1483 close (fs_fd); 1823 close (fs_fd);
1484#endif 1824#endif
1485 1825
1486 if (backend_fd >= 0) 1826 if (backend_fd >= 0)
1487 close (backend_fd); 1827 close (backend_fd);
1488 1828
1829#if EV_USE_IOCP
1830 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1831#endif
1489#if EV_USE_PORT 1832#if EV_USE_PORT
1490 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1833 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1491#endif 1834#endif
1492#if EV_USE_KQUEUE 1835#if EV_USE_KQUEUE
1493 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 1836 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1508#if EV_IDLE_ENABLE 1851#if EV_IDLE_ENABLE
1509 array_free (idle, [i]); 1852 array_free (idle, [i]);
1510#endif 1853#endif
1511 } 1854 }
1512 1855
1513 ev_free (anfds); anfdmax = 0; 1856 ev_free (anfds); anfds = 0; anfdmax = 0;
1514 1857
1515 /* have to use the microsoft-never-gets-it-right macro */ 1858 /* have to use the microsoft-never-gets-it-right macro */
1516 array_free (rfeed, EMPTY); 1859 array_free (rfeed, EMPTY);
1517 array_free (fdchange, EMPTY); 1860 array_free (fdchange, EMPTY);
1518 array_free (timer, EMPTY); 1861 array_free (timer, EMPTY);
… …
1520 array_free (periodic, EMPTY); 1863 array_free (periodic, EMPTY);
1521#endif 1864#endif
1522#if EV_FORK_ENABLE 1865#if EV_FORK_ENABLE
1523 array_free (fork, EMPTY); 1866 array_free (fork, EMPTY);
1524#endif 1867#endif
1868#if EV_CLEANUP_ENABLE
1869 array_free (cleanup, EMPTY);
1870#endif
1525 array_free (prepare, EMPTY); 1871 array_free (prepare, EMPTY);
1526 array_free (check, EMPTY); 1872 array_free (check, EMPTY);
1527#if EV_ASYNC_ENABLE 1873#if EV_ASYNC_ENABLE
1528 array_free (async, EMPTY); 1874 array_free (async, EMPTY);
1529#endif 1875#endif
1530 1876
1531 backend = 0; 1877 backend = 0;
1878
1879#if EV_MULTIPLICITY
1880 if (ev_is_default_loop (EV_A))
1881#endif
1882 ev_default_loop_ptr = 0;
1883#if EV_MULTIPLICITY
1884 else
1885 ev_free (EV_A);
1886#endif
1532} 1887}
1533 1888
1534#if EV_USE_INOTIFY 1889#if EV_USE_INOTIFY
1535inline_size void infy_fork (EV_P); 1890inline_size void infy_fork (EV_P);
1536#endif 1891#endif
… …
1553 1908
1554 if (ev_is_active (&pipe_w)) 1909 if (ev_is_active (&pipe_w))
1555 { 1910 {
1556 /* this "locks" the handlers against writing to the pipe */ 1911 /* this "locks" the handlers against writing to the pipe */
1557 /* while we modify the fd vars */ 1912 /* while we modify the fd vars */
1558 gotsig = 1; 1913 sig_pending = 1;
1559#if EV_ASYNC_ENABLE 1914#if EV_ASYNC_ENABLE
1560 gotasync = 1; 1915 async_pending = 1;
1561#endif 1916#endif
1562 1917
1563 ev_ref (EV_A); 1918 ev_ref (EV_A);
1564 ev_io_stop (EV_A_ &pipe_w); 1919 ev_io_stop (EV_A_ &pipe_w);
1565 1920
… …
1568 close (evfd); 1923 close (evfd);
1569#endif 1924#endif
1570 1925
1571 if (evpipe [0] >= 0) 1926 if (evpipe [0] >= 0)
1572 { 1927 {
1573 close (evpipe [0]); 1928 EV_WIN32_CLOSE_FD (evpipe [0]);
1574 close (evpipe [1]); 1929 EV_WIN32_CLOSE_FD (evpipe [1]);
1575 } 1930 }
1576 1931
1932#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1577 evpipe_init (EV_A); 1933 evpipe_init (EV_A);
1578 /* now iterate over everything, in case we missed something */ 1934 /* now iterate over everything, in case we missed something */
1579 pipecb (EV_A_ &pipe_w, EV_READ); 1935 pipecb (EV_A_ &pipe_w, EV_READ);
1936#endif
1580 } 1937 }
1581 1938
1582 postfork = 0; 1939 postfork = 0;
1583} 1940}
1584 1941
1585#if EV_MULTIPLICITY 1942#if EV_MULTIPLICITY
1586 1943
1587struct ev_loop * 1944struct ev_loop *
1588ev_loop_new (unsigned int flags) 1945ev_loop_new (unsigned int flags)
1589{ 1946{
1590 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1947 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1591 1948
1592 memset (loop, 0, sizeof (struct ev_loop)); 1949 memset (EV_A, 0, sizeof (struct ev_loop));
1593
1594 loop_init (EV_A_ flags); 1950 loop_init (EV_A_ flags);
1595 1951
1596 if (ev_backend (EV_A)) 1952 if (ev_backend (EV_A))
1597 return loop; 1953 return EV_A;
1598 1954
1955 ev_free (EV_A);
1599 return 0; 1956 return 0;
1600} 1957}
1601 1958
1602void 1959#endif /* multiplicity */
1603ev_loop_destroy (EV_P)
1604{
1605 loop_destroy (EV_A);
1606 ev_free (loop);
1607}
1608
1609void
1610ev_loop_fork (EV_P)
1611{
1612 postfork = 1; /* must be in line with ev_default_fork */
1613}
1614 1960
1615#if EV_VERIFY 1961#if EV_VERIFY
1616static void noinline 1962static void noinline
1617verify_watcher (EV_P_ W w) 1963verify_watcher (EV_P_ W w)
1618{ 1964{
… …
1646 verify_watcher (EV_A_ ws [cnt]); 1992 verify_watcher (EV_A_ ws [cnt]);
1647 } 1993 }
1648} 1994}
1649#endif 1995#endif
1650 1996
1997#if EV_FEATURE_API
1651void 1998void
1652ev_loop_verify (EV_P) 1999ev_verify (EV_P)
1653{ 2000{
1654#if EV_VERIFY 2001#if EV_VERIFY
1655 int i; 2002 int i;
1656 WL w; 2003 WL w;
1657 2004
… …
1691#if EV_FORK_ENABLE 2038#if EV_FORK_ENABLE
1692 assert (forkmax >= forkcnt); 2039 assert (forkmax >= forkcnt);
1693 array_verify (EV_A_ (W *)forks, forkcnt); 2040 array_verify (EV_A_ (W *)forks, forkcnt);
1694#endif 2041#endif
1695 2042
2043#if EV_CLEANUP_ENABLE
2044 assert (cleanupmax >= cleanupcnt);
2045 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2046#endif
2047
1696#if EV_ASYNC_ENABLE 2048#if EV_ASYNC_ENABLE
1697 assert (asyncmax >= asynccnt); 2049 assert (asyncmax >= asynccnt);
1698 array_verify (EV_A_ (W *)asyncs, asynccnt); 2050 array_verify (EV_A_ (W *)asyncs, asynccnt);
1699#endif 2051#endif
1700 2052
2053#if EV_PREPARE_ENABLE
1701 assert (preparemax >= preparecnt); 2054 assert (preparemax >= preparecnt);
1702 array_verify (EV_A_ (W *)prepares, preparecnt); 2055 array_verify (EV_A_ (W *)prepares, preparecnt);
2056#endif
1703 2057
2058#if EV_CHECK_ENABLE
1704 assert (checkmax >= checkcnt); 2059 assert (checkmax >= checkcnt);
1705 array_verify (EV_A_ (W *)checks, checkcnt); 2060 array_verify (EV_A_ (W *)checks, checkcnt);
2061#endif
1706 2062
1707# if 0 2063# if 0
2064#if EV_CHILD_ENABLE
1708 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2065 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1709 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2066 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2067#endif
1710# endif 2068# endif
1711#endif 2069#endif
1712} 2070}
1713 2071#endif
1714#endif /* multiplicity */
1715 2072
1716#if EV_MULTIPLICITY 2073#if EV_MULTIPLICITY
1717struct ev_loop * 2074struct ev_loop *
1718ev_default_loop_init (unsigned int flags)
1719#else 2075#else
1720int 2076int
2077#endif
1721ev_default_loop (unsigned int flags) 2078ev_default_loop (unsigned int flags)
1722#endif
1723{ 2079{
1724 if (!ev_default_loop_ptr) 2080 if (!ev_default_loop_ptr)
1725 { 2081 {
1726#if EV_MULTIPLICITY 2082#if EV_MULTIPLICITY
1727 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2083 EV_P = ev_default_loop_ptr = &default_loop_struct;
1728#else 2084#else
1729 ev_default_loop_ptr = 1; 2085 ev_default_loop_ptr = 1;
1730#endif 2086#endif
1731 2087
1732 loop_init (EV_A_ flags); 2088 loop_init (EV_A_ flags);
1733 2089
1734 if (ev_backend (EV_A)) 2090 if (ev_backend (EV_A))
1735 { 2091 {
1736#ifndef _WIN32 2092#if EV_CHILD_ENABLE
1737 ev_signal_init (&childev, childcb, SIGCHLD); 2093 ev_signal_init (&childev, childcb, SIGCHLD);
1738 ev_set_priority (&childev, EV_MAXPRI); 2094 ev_set_priority (&childev, EV_MAXPRI);
1739 ev_signal_start (EV_A_ &childev); 2095 ev_signal_start (EV_A_ &childev);
1740 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2096 ev_unref (EV_A); /* child watcher should not keep loop alive */
1741#endif 2097#endif
… …
1746 2102
1747 return ev_default_loop_ptr; 2103 return ev_default_loop_ptr;
1748} 2104}
1749 2105
1750void 2106void
1751ev_default_destroy (void) 2107ev_loop_fork (EV_P)
1752{ 2108{
1753#if EV_MULTIPLICITY
1754 struct ev_loop *loop = ev_default_loop_ptr;
1755#endif
1756
1757 ev_default_loop_ptr = 0;
1758
1759#ifndef _WIN32
1760 ev_ref (EV_A); /* child watcher */
1761 ev_signal_stop (EV_A_ &childev);
1762#endif
1763
1764 loop_destroy (EV_A);
1765}
1766
1767void
1768ev_default_fork (void)
1769{
1770#if EV_MULTIPLICITY
1771 struct ev_loop *loop = ev_default_loop_ptr;
1772#endif
1773
1774 postfork = 1; /* must be in line with ev_loop_fork */ 2109 postfork = 1; /* must be in line with ev_default_fork */
1775} 2110}
1776 2111
1777/*****************************************************************************/ 2112/*****************************************************************************/
1778 2113
1779void 2114void
1780ev_invoke (EV_P_ void *w, int revents) 2115ev_invoke (EV_P_ void *w, int revents)
1781{ 2116{
1782 EV_CB_INVOKE ((W)w, revents); 2117 EV_CB_INVOKE ((W)w, revents);
1783} 2118}
1784 2119
1785inline_speed void 2120unsigned int
1786call_pending (EV_P) 2121ev_pending_count (EV_P)
2122{
2123 int pri;
2124 unsigned int count = 0;
2125
2126 for (pri = NUMPRI; pri--; )
2127 count += pendingcnt [pri];
2128
2129 return count;
2130}
2131
2132void noinline
2133ev_invoke_pending (EV_P)
1787{ 2134{
1788 int pri; 2135 int pri;
1789 2136
1790 for (pri = NUMPRI; pri--; ) 2137 for (pri = NUMPRI; pri--; )
1791 while (pendingcnt [pri]) 2138 while (pendingcnt [pri])
1792 { 2139 {
1793 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2140 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1794
1795 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1796 /* ^ this is no longer true, as pending_w could be here */
1797 2141
1798 p->w->pending = 0; 2142 p->w->pending = 0;
1799 EV_CB_INVOKE (p->w, p->events); 2143 EV_CB_INVOKE (p->w, p->events);
1800 EV_FREQUENT_CHECK; 2144 EV_FREQUENT_CHECK;
1801 } 2145 }
… …
1858 EV_FREQUENT_CHECK; 2202 EV_FREQUENT_CHECK;
1859 feed_reverse (EV_A_ (W)w); 2203 feed_reverse (EV_A_ (W)w);
1860 } 2204 }
1861 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2205 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1862 2206
1863 feed_reverse_done (EV_A_ EV_TIMEOUT); 2207 feed_reverse_done (EV_A_ EV_TIMER);
1864 } 2208 }
1865} 2209}
1866 2210
1867#if EV_PERIODIC_ENABLE 2211#if EV_PERIODIC_ENABLE
2212
2213inline_speed void
2214periodic_recalc (EV_P_ ev_periodic *w)
2215{
2216 /* TODO: use slow but potentially more correct incremental algo, */
2217 /* also do not rely on ceil */
2218 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2219}
2220
1868/* make periodics pending */ 2221/* make periodics pending */
1869inline_size void 2222inline_size void
1870periodics_reify (EV_P) 2223periodics_reify (EV_P)
1871{ 2224{
1872 EV_FREQUENT_CHECK; 2225 EV_FREQUENT_CHECK;
… …
1891 ANHE_at_cache (periodics [HEAP0]); 2244 ANHE_at_cache (periodics [HEAP0]);
1892 downheap (periodics, periodiccnt, HEAP0); 2245 downheap (periodics, periodiccnt, HEAP0);
1893 } 2246 }
1894 else if (w->interval) 2247 else if (w->interval)
1895 { 2248 {
1896 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2249 periodic_recalc (EV_A_ w);
2250
1897 /* if next trigger time is not sufficiently in the future, put it there */ 2251 /* if next trigger time is not sufficiently in the future, put it there */
1898 /* this might happen because of floating point inexactness */ 2252 /* this might happen because of floating point inexactness */
1899 if (ev_at (w) - ev_rt_now < TIME_EPSILON) 2253 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1900 { 2254 {
1901 ev_at (w) += w->interval; 2255 ev_at (w) += w->interval;
… …
1921 feed_reverse_done (EV_A_ EV_PERIODIC); 2275 feed_reverse_done (EV_A_ EV_PERIODIC);
1922 } 2276 }
1923} 2277}
1924 2278
1925/* simply recalculate all periodics */ 2279/* simply recalculate all periodics */
1926/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2280/* TODO: maybe ensure that at least one event happens when jumping forward? */
1927static void noinline 2281static void noinline
1928periodics_reschedule (EV_P) 2282periodics_reschedule (EV_P)
1929{ 2283{
1930 int i; 2284 int i;
1931 2285
… …
1935 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2289 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1936 2290
1937 if (w->reschedule_cb) 2291 if (w->reschedule_cb)
1938 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2292 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1939 else if (w->interval) 2293 else if (w->interval)
1940 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2294 periodic_recalc (EV_A_ w);
1941 2295
1942 ANHE_at_cache (periodics [i]); 2296 ANHE_at_cache (periodics [i]);
1943 } 2297 }
1944 2298
1945 reheap (periodics, periodiccnt); 2299 reheap (periodics, periodiccnt);
… …
1959 ANHE_at_cache (*he); 2313 ANHE_at_cache (*he);
1960 } 2314 }
1961} 2315}
1962 2316
1963/* fetch new monotonic and realtime times from the kernel */ 2317/* fetch new monotonic and realtime times from the kernel */
1964/* also detetc if there was a timejump, and act accordingly */ 2318/* also detect if there was a timejump, and act accordingly */
1965inline_speed void 2319inline_speed void
1966time_update (EV_P_ ev_tstamp max_block) 2320time_update (EV_P_ ev_tstamp max_block)
1967{ 2321{
1968#if EV_USE_MONOTONIC 2322#if EV_USE_MONOTONIC
1969 if (expect_true (have_monotonic)) 2323 if (expect_true (have_monotonic))
… …
2027 mn_now = ev_rt_now; 2381 mn_now = ev_rt_now;
2028 } 2382 }
2029} 2383}
2030 2384
2031void 2385void
2032ev_loop (EV_P_ int flags) 2386ev_run (EV_P_ int flags)
2033{ 2387{
2388#if EV_FEATURE_API
2034 ++loop_depth; 2389 ++loop_depth;
2390#endif
2035 2391
2392 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2393
2036 loop_done = EVUNLOOP_CANCEL; 2394 loop_done = EVBREAK_CANCEL;
2037 2395
2038 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2396 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2039 2397
2040 do 2398 do
2041 { 2399 {
2042#if EV_VERIFY >= 2 2400#if EV_VERIFY >= 2
2043 ev_loop_verify (EV_A); 2401 ev_verify (EV_A);
2044#endif 2402#endif
2045 2403
2046#ifndef _WIN32 2404#ifndef _WIN32
2047 if (expect_false (curpid)) /* penalise the forking check even more */ 2405 if (expect_false (curpid)) /* penalise the forking check even more */
2048 if (expect_false (getpid () != curpid)) 2406 if (expect_false (getpid () != curpid))
… …
2056 /* we might have forked, so queue fork handlers */ 2414 /* we might have forked, so queue fork handlers */
2057 if (expect_false (postfork)) 2415 if (expect_false (postfork))
2058 if (forkcnt) 2416 if (forkcnt)
2059 { 2417 {
2060 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2418 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2061 call_pending (EV_A); 2419 EV_INVOKE_PENDING;
2062 } 2420 }
2063#endif 2421#endif
2064 2422
2423#if EV_PREPARE_ENABLE
2065 /* queue prepare watchers (and execute them) */ 2424 /* queue prepare watchers (and execute them) */
2066 if (expect_false (preparecnt)) 2425 if (expect_false (preparecnt))
2067 { 2426 {
2068 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2427 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2069 call_pending (EV_A); 2428 EV_INVOKE_PENDING;
2070 } 2429 }
2430#endif
2431
2432 if (expect_false (loop_done))
2433 break;
2071 2434
2072 /* we might have forked, so reify kernel state if necessary */ 2435 /* we might have forked, so reify kernel state if necessary */
2073 if (expect_false (postfork)) 2436 if (expect_false (postfork))
2074 loop_fork (EV_A); 2437 loop_fork (EV_A);
2075 2438
… …
2079 /* calculate blocking time */ 2442 /* calculate blocking time */
2080 { 2443 {
2081 ev_tstamp waittime = 0.; 2444 ev_tstamp waittime = 0.;
2082 ev_tstamp sleeptime = 0.; 2445 ev_tstamp sleeptime = 0.;
2083 2446
2447 /* remember old timestamp for io_blocktime calculation */
2448 ev_tstamp prev_mn_now = mn_now;
2449
2450 /* update time to cancel out callback processing overhead */
2451 time_update (EV_A_ 1e100);
2452
2084 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2453 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt)))
2085 { 2454 {
2086 /* remember old timestamp for io_blocktime calculation */
2087 ev_tstamp prev_mn_now = mn_now;
2088
2089 /* update time to cancel out callback processing overhead */
2090 time_update (EV_A_ 1e100);
2091
2092 waittime = MAX_BLOCKTIME; 2455 waittime = MAX_BLOCKTIME;
2093 2456
2094 if (timercnt) 2457 if (timercnt)
2095 { 2458 {
2096 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2459 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
… …
2123 waittime -= sleeptime; 2486 waittime -= sleeptime;
2124 } 2487 }
2125 } 2488 }
2126 } 2489 }
2127 2490
2491#if EV_FEATURE_API
2128 ++loop_count; 2492 ++loop_count;
2493#endif
2494 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2129 backend_poll (EV_A_ waittime); 2495 backend_poll (EV_A_ waittime);
2496 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2130 2497
2131 /* update ev_rt_now, do magic */ 2498 /* update ev_rt_now, do magic */
2132 time_update (EV_A_ waittime + sleeptime); 2499 time_update (EV_A_ waittime + sleeptime);
2133 } 2500 }
2134 2501
… …
2141#if EV_IDLE_ENABLE 2508#if EV_IDLE_ENABLE
2142 /* queue idle watchers unless other events are pending */ 2509 /* queue idle watchers unless other events are pending */
2143 idle_reify (EV_A); 2510 idle_reify (EV_A);
2144#endif 2511#endif
2145 2512
2513#if EV_CHECK_ENABLE
2146 /* queue check watchers, to be executed first */ 2514 /* queue check watchers, to be executed first */
2147 if (expect_false (checkcnt)) 2515 if (expect_false (checkcnt))
2148 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2516 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2517#endif
2149 2518
2150 call_pending (EV_A); 2519 EV_INVOKE_PENDING;
2151 } 2520 }
2152 while (expect_true ( 2521 while (expect_true (
2153 activecnt 2522 activecnt
2154 && !loop_done 2523 && !loop_done
2155 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2524 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2156 )); 2525 ));
2157 2526
2158 if (loop_done == EVUNLOOP_ONE) 2527 if (loop_done == EVBREAK_ONE)
2159 loop_done = EVUNLOOP_CANCEL; 2528 loop_done = EVBREAK_CANCEL;
2160 2529
2530#if EV_FEATURE_API
2161 --loop_depth; 2531 --loop_depth;
2532#endif
2162} 2533}
2163 2534
2164void 2535void
2165ev_unloop (EV_P_ int how) 2536ev_break (EV_P_ int how)
2166{ 2537{
2167 loop_done = how; 2538 loop_done = how;
2168} 2539}
2169 2540
2170void 2541void
… …
2217inline_size void 2588inline_size void
2218wlist_del (WL *head, WL elem) 2589wlist_del (WL *head, WL elem)
2219{ 2590{
2220 while (*head) 2591 while (*head)
2221 { 2592 {
2222 if (*head == elem) 2593 if (expect_true (*head == elem))
2223 { 2594 {
2224 *head = elem->next; 2595 *head = elem->next;
2225 return; 2596 break;
2226 } 2597 }
2227 2598
2228 head = &(*head)->next; 2599 head = &(*head)->next;
2229 } 2600 }
2230} 2601}
… …
2258} 2629}
2259 2630
2260inline_size void 2631inline_size void
2261pri_adjust (EV_P_ W w) 2632pri_adjust (EV_P_ W w)
2262{ 2633{
2263 int pri = w->priority; 2634 int pri = ev_priority (w);
2264 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2635 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2265 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2636 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2266 w->priority = pri; 2637 ev_set_priority (w, pri);
2267} 2638}
2268 2639
2269inline_speed void 2640inline_speed void
2270ev_start (EV_P_ W w, int active) 2641ev_start (EV_P_ W w, int active)
2271{ 2642{
… …
2290 2661
2291 if (expect_false (ev_is_active (w))) 2662 if (expect_false (ev_is_active (w)))
2292 return; 2663 return;
2293 2664
2294 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 2665 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2295 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 2666 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2296 2667
2297 EV_FREQUENT_CHECK; 2668 EV_FREQUENT_CHECK;
2298 2669
2299 ev_start (EV_A_ (W)w, 1); 2670 ev_start (EV_A_ (W)w, 1);
2300 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 2671 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2301 wlist_add (&anfds[fd].head, (WL)w); 2672 wlist_add (&anfds[fd].head, (WL)w);
2302 2673
2303 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); 2674 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2304 w->events &= ~EV__IOFDSET; 2675 w->events &= ~EV__IOFDSET;
2305 2676
2306 EV_FREQUENT_CHECK; 2677 EV_FREQUENT_CHECK;
2307} 2678}
2308 2679
… …
2318 EV_FREQUENT_CHECK; 2689 EV_FREQUENT_CHECK;
2319 2690
2320 wlist_del (&anfds[w->fd].head, (WL)w); 2691 wlist_del (&anfds[w->fd].head, (WL)w);
2321 ev_stop (EV_A_ (W)w); 2692 ev_stop (EV_A_ (W)w);
2322 2693
2323 fd_change (EV_A_ w->fd, 1); 2694 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2324 2695
2325 EV_FREQUENT_CHECK; 2696 EV_FREQUENT_CHECK;
2326} 2697}
2327 2698
2328void noinline 2699void noinline
… …
2370 timers [active] = timers [timercnt + HEAP0]; 2741 timers [active] = timers [timercnt + HEAP0];
2371 adjustheap (timers, timercnt, active); 2742 adjustheap (timers, timercnt, active);
2372 } 2743 }
2373 } 2744 }
2374 2745
2375 EV_FREQUENT_CHECK;
2376
2377 ev_at (w) -= mn_now; 2746 ev_at (w) -= mn_now;
2378 2747
2379 ev_stop (EV_A_ (W)w); 2748 ev_stop (EV_A_ (W)w);
2749
2750 EV_FREQUENT_CHECK;
2380} 2751}
2381 2752
2382void noinline 2753void noinline
2383ev_timer_again (EV_P_ ev_timer *w) 2754ev_timer_again (EV_P_ ev_timer *w)
2384{ 2755{
… …
2402 } 2773 }
2403 2774
2404 EV_FREQUENT_CHECK; 2775 EV_FREQUENT_CHECK;
2405} 2776}
2406 2777
2778ev_tstamp
2779ev_timer_remaining (EV_P_ ev_timer *w)
2780{
2781 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2782}
2783
2407#if EV_PERIODIC_ENABLE 2784#if EV_PERIODIC_ENABLE
2408void noinline 2785void noinline
2409ev_periodic_start (EV_P_ ev_periodic *w) 2786ev_periodic_start (EV_P_ ev_periodic *w)
2410{ 2787{
2411 if (expect_false (ev_is_active (w))) 2788 if (expect_false (ev_is_active (w)))
… …
2414 if (w->reschedule_cb) 2791 if (w->reschedule_cb)
2415 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2792 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2416 else if (w->interval) 2793 else if (w->interval)
2417 { 2794 {
2418 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 2795 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2419 /* this formula differs from the one in periodic_reify because we do not always round up */ 2796 periodic_recalc (EV_A_ w);
2420 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2421 } 2797 }
2422 else 2798 else
2423 ev_at (w) = w->offset; 2799 ev_at (w) = w->offset;
2424 2800
2425 EV_FREQUENT_CHECK; 2801 EV_FREQUENT_CHECK;
… …
2457 periodics [active] = periodics [periodiccnt + HEAP0]; 2833 periodics [active] = periodics [periodiccnt + HEAP0];
2458 adjustheap (periodics, periodiccnt, active); 2834 adjustheap (periodics, periodiccnt, active);
2459 } 2835 }
2460 } 2836 }
2461 2837
2462 EV_FREQUENT_CHECK;
2463
2464 ev_stop (EV_A_ (W)w); 2838 ev_stop (EV_A_ (W)w);
2839
2840 EV_FREQUENT_CHECK;
2465} 2841}
2466 2842
2467void noinline 2843void noinline
2468ev_periodic_again (EV_P_ ev_periodic *w) 2844ev_periodic_again (EV_P_ ev_periodic *w)
2469{ 2845{
… …
2475 2851
2476#ifndef SA_RESTART 2852#ifndef SA_RESTART
2477# define SA_RESTART 0 2853# define SA_RESTART 0
2478#endif 2854#endif
2479 2855
2856#if EV_SIGNAL_ENABLE
2857
2480void noinline 2858void noinline
2481ev_signal_start (EV_P_ ev_signal *w) 2859ev_signal_start (EV_P_ ev_signal *w)
2482{ 2860{
2483#if EV_MULTIPLICITY
2484 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2485#endif
2486 if (expect_false (ev_is_active (w))) 2861 if (expect_false (ev_is_active (w)))
2487 return; 2862 return;
2488 2863
2489 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 2864 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2490 2865
2491 evpipe_init (EV_A); 2866#if EV_MULTIPLICITY
2867 assert (("libev: a signal must not be attached to two different loops",
2868 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2492 2869
2493 EV_FREQUENT_CHECK; 2870 signals [w->signum - 1].loop = EV_A;
2871#endif
2494 2872
2873 EV_FREQUENT_CHECK;
2874
2875#if EV_USE_SIGNALFD
2876 if (sigfd == -2)
2495 { 2877 {
2496#ifndef _WIN32 2878 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2497 sigset_t full, prev; 2879 if (sigfd < 0 && errno == EINVAL)
2498 sigfillset (&full); 2880 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2499 sigprocmask (SIG_SETMASK, &full, &prev);
2500#endif
2501 2881
2502 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 2882 if (sigfd >= 0)
2883 {
2884 fd_intern (sigfd); /* doing it twice will not hurt */
2503 2885
2504#ifndef _WIN32 2886 sigemptyset (&sigfd_set);
2505 sigprocmask (SIG_SETMASK, &prev, 0); 2887
2506#endif 2888 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2889 ev_set_priority (&sigfd_w, EV_MAXPRI);
2890 ev_io_start (EV_A_ &sigfd_w);
2891 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2892 }
2507 } 2893 }
2894
2895 if (sigfd >= 0)
2896 {
2897 /* TODO: check .head */
2898 sigaddset (&sigfd_set, w->signum);
2899 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2900
2901 signalfd (sigfd, &sigfd_set, 0);
2902 }
2903#endif
2508 2904
2509 ev_start (EV_A_ (W)w, 1); 2905 ev_start (EV_A_ (W)w, 1);
2510 wlist_add (&signals [w->signum - 1].head, (WL)w); 2906 wlist_add (&signals [w->signum - 1].head, (WL)w);
2511 2907
2512 if (!((WL)w)->next) 2908 if (!((WL)w)->next)
2909# if EV_USE_SIGNALFD
2910 if (sigfd < 0) /*TODO*/
2911# endif
2513 { 2912 {
2514#if _WIN32 2913# ifdef _WIN32
2914 evpipe_init (EV_A);
2915
2515 signal (w->signum, ev_sighandler); 2916 signal (w->signum, ev_sighandler);
2516#else 2917# else
2517 struct sigaction sa; 2918 struct sigaction sa;
2919
2920 evpipe_init (EV_A);
2921
2518 sa.sa_handler = ev_sighandler; 2922 sa.sa_handler = ev_sighandler;
2519 sigfillset (&sa.sa_mask); 2923 sigfillset (&sa.sa_mask);
2520 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2924 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2521 sigaction (w->signum, &sa, 0); 2925 sigaction (w->signum, &sa, 0);
2926
2927 if (origflags & EVFLAG_NOSIGMASK)
2928 {
2929 sigemptyset (&sa.sa_mask);
2930 sigaddset (&sa.sa_mask, w->signum);
2931 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2932 }
2522#endif 2933#endif
2523 } 2934 }
2524 2935
2525 EV_FREQUENT_CHECK; 2936 EV_FREQUENT_CHECK;
2526} 2937}
2527 2938
2528void noinline 2939void noinline
… …
2536 2947
2537 wlist_del (&signals [w->signum - 1].head, (WL)w); 2948 wlist_del (&signals [w->signum - 1].head, (WL)w);
2538 ev_stop (EV_A_ (W)w); 2949 ev_stop (EV_A_ (W)w);
2539 2950
2540 if (!signals [w->signum - 1].head) 2951 if (!signals [w->signum - 1].head)
2952 {
2953#if EV_MULTIPLICITY
2954 signals [w->signum - 1].loop = 0; /* unattach from signal */
2955#endif
2956#if EV_USE_SIGNALFD
2957 if (sigfd >= 0)
2958 {
2959 sigset_t ss;
2960
2961 sigemptyset (&ss);
2962 sigaddset (&ss, w->signum);
2963 sigdelset (&sigfd_set, w->signum);
2964
2965 signalfd (sigfd, &sigfd_set, 0);
2966 sigprocmask (SIG_UNBLOCK, &ss, 0);
2967 }
2968 else
2969#endif
2541 signal (w->signum, SIG_DFL); 2970 signal (w->signum, SIG_DFL);
2971 }
2542 2972
2543 EV_FREQUENT_CHECK; 2973 EV_FREQUENT_CHECK;
2544} 2974}
2975
2976#endif
2977
2978#if EV_CHILD_ENABLE
2545 2979
2546void 2980void
2547ev_child_start (EV_P_ ev_child *w) 2981ev_child_start (EV_P_ ev_child *w)
2548{ 2982{
2549#if EV_MULTIPLICITY 2983#if EV_MULTIPLICITY
… …
2553 return; 2987 return;
2554 2988
2555 EV_FREQUENT_CHECK; 2989 EV_FREQUENT_CHECK;
2556 2990
2557 ev_start (EV_A_ (W)w, 1); 2991 ev_start (EV_A_ (W)w, 1);
2558 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2992 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2559 2993
2560 EV_FREQUENT_CHECK; 2994 EV_FREQUENT_CHECK;
2561} 2995}
2562 2996
2563void 2997void
… …
2567 if (expect_false (!ev_is_active (w))) 3001 if (expect_false (!ev_is_active (w)))
2568 return; 3002 return;
2569 3003
2570 EV_FREQUENT_CHECK; 3004 EV_FREQUENT_CHECK;
2571 3005
2572 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3006 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2573 ev_stop (EV_A_ (W)w); 3007 ev_stop (EV_A_ (W)w);
2574 3008
2575 EV_FREQUENT_CHECK; 3009 EV_FREQUENT_CHECK;
2576} 3010}
3011
3012#endif
2577 3013
2578#if EV_STAT_ENABLE 3014#if EV_STAT_ENABLE
2579 3015
2580# ifdef _WIN32 3016# ifdef _WIN32
2581# undef lstat 3017# undef lstat
… …
2587#define MIN_STAT_INTERVAL 0.1074891 3023#define MIN_STAT_INTERVAL 0.1074891
2588 3024
2589static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3025static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2590 3026
2591#if EV_USE_INOTIFY 3027#if EV_USE_INOTIFY
2592# define EV_INOTIFY_BUFSIZE 8192 3028
3029/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3030# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2593 3031
2594static void noinline 3032static void noinline
2595infy_add (EV_P_ ev_stat *w) 3033infy_add (EV_P_ ev_stat *w)
2596{ 3034{
2597 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); 3035 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);
2598 3036
2599 if (w->wd < 0) 3037 if (w->wd >= 0)
3038 {
3039 struct statfs sfs;
3040
3041 /* now local changes will be tracked by inotify, but remote changes won't */
3042 /* unless the filesystem is known to be local, we therefore still poll */
3043 /* also do poll on <2.6.25, but with normal frequency */
3044
3045 if (!fs_2625)
3046 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3047 else if (!statfs (w->path, &sfs)
3048 && (sfs.f_type == 0x1373 /* devfs */
3049 || sfs.f_type == 0xEF53 /* ext2/3 */
3050 || sfs.f_type == 0x3153464a /* jfs */
3051 || sfs.f_type == 0x52654973 /* reiser3 */
3052 || sfs.f_type == 0x01021994 /* tempfs */
3053 || sfs.f_type == 0x58465342 /* xfs */))
3054 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3055 else
3056 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2600 { 3057 }
3058 else
3059 {
3060 /* can't use inotify, continue to stat */
2601 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3061 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2602 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2603 3062
2604 /* monitor some parent directory for speedup hints */ 3063 /* if path is not there, monitor some parent directory for speedup hints */
2605 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3064 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2606 /* but an efficiency issue only */ 3065 /* but an efficiency issue only */
2607 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3066 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2608 { 3067 {
2609 char path [4096]; 3068 char path [4096];
… …
2619 if (!pend || pend == path) 3078 if (!pend || pend == path)
2620 break; 3079 break;
2621 3080
2622 *pend = 0; 3081 *pend = 0;
2623 w->wd = inotify_add_watch (fs_fd, path, mask); 3082 w->wd = inotify_add_watch (fs_fd, path, mask);
2624 } 3083 }
2625 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3084 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2626 } 3085 }
2627 } 3086 }
2628 3087
2629 if (w->wd >= 0) 3088 if (w->wd >= 0)
2630 {
2631 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3089 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2632 3090
2633 /* now local changes will be tracked by inotify, but remote changes won't */ 3091 /* now re-arm timer, if required */
2634 /* unless the filesystem it known to be local, we therefore still poll */ 3092 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2635 /* also do poll on <2.6.25, but with normal frequency */
2636 struct statfs sfs;
2637
2638 if (fs_2625 && !statfs (w->path, &sfs))
2639 if (sfs.f_type == 0x1373 /* devfs */
2640 || sfs.f_type == 0xEF53 /* ext2/3 */
2641 || sfs.f_type == 0x3153464a /* jfs */
2642 || sfs.f_type == 0x52654973 /* reiser3 */
2643 || sfs.f_type == 0x01021994 /* tempfs */
2644 || sfs.f_type == 0x58465342 /* xfs */)
2645 return;
2646
2647 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2648 ev_timer_again (EV_A_ &w->timer); 3093 ev_timer_again (EV_A_ &w->timer);
2649 } 3094 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2650} 3095}
2651 3096
2652static void noinline 3097static void noinline
2653infy_del (EV_P_ ev_stat *w) 3098infy_del (EV_P_ ev_stat *w)
2654{ 3099{
… …
2657 3102
2658 if (wd < 0) 3103 if (wd < 0)
2659 return; 3104 return;
2660 3105
2661 w->wd = -2; 3106 w->wd = -2;
2662 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3107 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2663 wlist_del (&fs_hash [slot].head, (WL)w); 3108 wlist_del (&fs_hash [slot].head, (WL)w);
2664 3109
2665 /* remove this watcher, if others are watching it, they will rearm */ 3110 /* remove this watcher, if others are watching it, they will rearm */
2666 inotify_rm_watch (fs_fd, wd); 3111 inotify_rm_watch (fs_fd, wd);
2667} 3112}
… …
2669static void noinline 3114static void noinline
2670infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3115infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2671{ 3116{
2672 if (slot < 0) 3117 if (slot < 0)
2673 /* overflow, need to check for all hash slots */ 3118 /* overflow, need to check for all hash slots */
2674 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3119 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2675 infy_wd (EV_A_ slot, wd, ev); 3120 infy_wd (EV_A_ slot, wd, ev);
2676 else 3121 else
2677 { 3122 {
2678 WL w_; 3123 WL w_;
2679 3124
2680 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3125 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2681 { 3126 {
2682 ev_stat *w = (ev_stat *)w_; 3127 ev_stat *w = (ev_stat *)w_;
2683 w_ = w_->next; /* lets us remove this watcher and all before it */ 3128 w_ = w_->next; /* lets us remove this watcher and all before it */
2684 3129
2685 if (w->wd == wd || wd == -1) 3130 if (w->wd == wd || wd == -1)
2686 { 3131 {
2687 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3132 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2688 { 3133 {
2689 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3134 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2690 w->wd = -1; 3135 w->wd = -1;
2691 infy_add (EV_A_ w); /* re-add, no matter what */ 3136 infy_add (EV_A_ w); /* re-add, no matter what */
2692 } 3137 }
2693 3138
2694 stat_timer_cb (EV_A_ &w->timer, 0); 3139 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2699 3144
2700static void 3145static void
2701infy_cb (EV_P_ ev_io *w, int revents) 3146infy_cb (EV_P_ ev_io *w, int revents)
2702{ 3147{
2703 char buf [EV_INOTIFY_BUFSIZE]; 3148 char buf [EV_INOTIFY_BUFSIZE];
2704 struct inotify_event *ev = (struct inotify_event *)buf;
2705 int ofs; 3149 int ofs;
2706 int len = read (fs_fd, buf, sizeof (buf)); 3150 int len = read (fs_fd, buf, sizeof (buf));
2707 3151
2708 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3152 for (ofs = 0; ofs < len; )
3153 {
3154 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2709 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3155 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3156 ofs += sizeof (struct inotify_event) + ev->len;
3157 }
2710} 3158}
2711 3159
2712inline_size void 3160inline_size void
2713check_2625 (EV_P) 3161ev_check_2625 (EV_P)
2714{ 3162{
2715 /* kernels < 2.6.25 are borked 3163 /* kernels < 2.6.25 are borked
2716 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3164 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2717 */ 3165 */
2718 struct utsname buf; 3166 if (ev_linux_version () < 0x020619)
2719 int major, minor, micro;
2720
2721 if (uname (&buf))
2722 return; 3167 return;
2723 3168
2724 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2725 return;
2726
2727 if (major < 2
2728 || (major == 2 && minor < 6)
2729 || (major == 2 && minor == 6 && micro < 25))
2730 return;
2731
2732 fs_2625 = 1; 3169 fs_2625 = 1;
3170}
3171
3172inline_size int
3173infy_newfd (void)
3174{
3175#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3176 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3177 if (fd >= 0)
3178 return fd;
3179#endif
3180 return inotify_init ();
2733} 3181}
2734 3182
2735inline_size void 3183inline_size void
2736infy_init (EV_P) 3184infy_init (EV_P)
2737{ 3185{
2738 if (fs_fd != -2) 3186 if (fs_fd != -2)
2739 return; 3187 return;
2740 3188
2741 fs_fd = -1; 3189 fs_fd = -1;
2742 3190
2743 check_2625 (EV_A); 3191 ev_check_2625 (EV_A);
2744 3192
2745 fs_fd = inotify_init (); 3193 fs_fd = infy_newfd ();
2746 3194
2747 if (fs_fd >= 0) 3195 if (fs_fd >= 0)
2748 { 3196 {
3197 fd_intern (fs_fd);
2749 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3198 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2750 ev_set_priority (&fs_w, EV_MAXPRI); 3199 ev_set_priority (&fs_w, EV_MAXPRI);
2751 ev_io_start (EV_A_ &fs_w); 3200 ev_io_start (EV_A_ &fs_w);
3201 ev_unref (EV_A);
2752 } 3202 }
2753} 3203}
2754 3204
2755inline_size void 3205inline_size void
2756infy_fork (EV_P) 3206infy_fork (EV_P)
… …
2758 int slot; 3208 int slot;
2759 3209
2760 if (fs_fd < 0) 3210 if (fs_fd < 0)
2761 return; 3211 return;
2762 3212
3213 ev_ref (EV_A);
3214 ev_io_stop (EV_A_ &fs_w);
2763 close (fs_fd); 3215 close (fs_fd);
2764 fs_fd = inotify_init (); 3216 fs_fd = infy_newfd ();
2765 3217
3218 if (fs_fd >= 0)
3219 {
3220 fd_intern (fs_fd);
3221 ev_io_set (&fs_w, fs_fd, EV_READ);
3222 ev_io_start (EV_A_ &fs_w);
3223 ev_unref (EV_A);
3224 }
3225
2766 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3226 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2767 { 3227 {
2768 WL w_ = fs_hash [slot].head; 3228 WL w_ = fs_hash [slot].head;
2769 fs_hash [slot].head = 0; 3229 fs_hash [slot].head = 0;
2770 3230
2771 while (w_) 3231 while (w_)
… …
2776 w->wd = -1; 3236 w->wd = -1;
2777 3237
2778 if (fs_fd >= 0) 3238 if (fs_fd >= 0)
2779 infy_add (EV_A_ w); /* re-add, no matter what */ 3239 infy_add (EV_A_ w); /* re-add, no matter what */
2780 else 3240 else
3241 {
3242 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3243 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2781 ev_timer_again (EV_A_ &w->timer); 3244 ev_timer_again (EV_A_ &w->timer);
3245 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3246 }
2782 } 3247 }
2783 } 3248 }
2784} 3249}
2785 3250
2786#endif 3251#endif
… …
2803static void noinline 3268static void noinline
2804stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3269stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2805{ 3270{
2806 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3271 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2807 3272
2808 /* we copy this here each the time so that */ 3273 ev_statdata prev = w->attr;
2809 /* prev has the old value when the callback gets invoked */
2810 w->prev = w->attr;
2811 ev_stat_stat (EV_A_ w); 3274 ev_stat_stat (EV_A_ w);
2812 3275
2813 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3276 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2814 if ( 3277 if (
2815 w->prev.st_dev != w->attr.st_dev 3278 prev.st_dev != w->attr.st_dev
2816 || w->prev.st_ino != w->attr.st_ino 3279 || prev.st_ino != w->attr.st_ino
2817 || w->prev.st_mode != w->attr.st_mode 3280 || prev.st_mode != w->attr.st_mode
2818 || w->prev.st_nlink != w->attr.st_nlink 3281 || prev.st_nlink != w->attr.st_nlink
2819 || w->prev.st_uid != w->attr.st_uid 3282 || prev.st_uid != w->attr.st_uid
2820 || w->prev.st_gid != w->attr.st_gid 3283 || prev.st_gid != w->attr.st_gid
2821 || w->prev.st_rdev != w->attr.st_rdev 3284 || prev.st_rdev != w->attr.st_rdev
2822 || w->prev.st_size != w->attr.st_size 3285 || prev.st_size != w->attr.st_size
2823 || w->prev.st_atime != w->attr.st_atime 3286 || prev.st_atime != w->attr.st_atime
2824 || w->prev.st_mtime != w->attr.st_mtime 3287 || prev.st_mtime != w->attr.st_mtime
2825 || w->prev.st_ctime != w->attr.st_ctime 3288 || prev.st_ctime != w->attr.st_ctime
2826 ) { 3289 ) {
3290 /* we only update w->prev on actual differences */
3291 /* in case we test more often than invoke the callback, */
3292 /* to ensure that prev is always different to attr */
3293 w->prev = prev;
3294
2827 #if EV_USE_INOTIFY 3295 #if EV_USE_INOTIFY
2828 if (fs_fd >= 0) 3296 if (fs_fd >= 0)
2829 { 3297 {
2830 infy_del (EV_A_ w); 3298 infy_del (EV_A_ w);
2831 infy_add (EV_A_ w); 3299 infy_add (EV_A_ w);
… …
2856 3324
2857 if (fs_fd >= 0) 3325 if (fs_fd >= 0)
2858 infy_add (EV_A_ w); 3326 infy_add (EV_A_ w);
2859 else 3327 else
2860#endif 3328#endif
3329 {
2861 ev_timer_again (EV_A_ &w->timer); 3330 ev_timer_again (EV_A_ &w->timer);
3331 ev_unref (EV_A);
3332 }
2862 3333
2863 ev_start (EV_A_ (W)w, 1); 3334 ev_start (EV_A_ (W)w, 1);
2864 3335
2865 EV_FREQUENT_CHECK; 3336 EV_FREQUENT_CHECK;
2866} 3337}
… …
2875 EV_FREQUENT_CHECK; 3346 EV_FREQUENT_CHECK;
2876 3347
2877#if EV_USE_INOTIFY 3348#if EV_USE_INOTIFY
2878 infy_del (EV_A_ w); 3349 infy_del (EV_A_ w);
2879#endif 3350#endif
3351
3352 if (ev_is_active (&w->timer))
3353 {
3354 ev_ref (EV_A);
2880 ev_timer_stop (EV_A_ &w->timer); 3355 ev_timer_stop (EV_A_ &w->timer);
3356 }
2881 3357
2882 ev_stop (EV_A_ (W)w); 3358 ev_stop (EV_A_ (W)w);
2883 3359
2884 EV_FREQUENT_CHECK; 3360 EV_FREQUENT_CHECK;
2885} 3361}
… …
2930 3406
2931 EV_FREQUENT_CHECK; 3407 EV_FREQUENT_CHECK;
2932} 3408}
2933#endif 3409#endif
2934 3410
3411#if EV_PREPARE_ENABLE
2935void 3412void
2936ev_prepare_start (EV_P_ ev_prepare *w) 3413ev_prepare_start (EV_P_ ev_prepare *w)
2937{ 3414{
2938 if (expect_false (ev_is_active (w))) 3415 if (expect_false (ev_is_active (w)))
2939 return; 3416 return;
… …
2965 3442
2966 ev_stop (EV_A_ (W)w); 3443 ev_stop (EV_A_ (W)w);
2967 3444
2968 EV_FREQUENT_CHECK; 3445 EV_FREQUENT_CHECK;
2969} 3446}
3447#endif
2970 3448
3449#if EV_CHECK_ENABLE
2971void 3450void
2972ev_check_start (EV_P_ ev_check *w) 3451ev_check_start (EV_P_ ev_check *w)
2973{ 3452{
2974 if (expect_false (ev_is_active (w))) 3453 if (expect_false (ev_is_active (w)))
2975 return; 3454 return;
… …
3001 3480
3002 ev_stop (EV_A_ (W)w); 3481 ev_stop (EV_A_ (W)w);
3003 3482
3004 EV_FREQUENT_CHECK; 3483 EV_FREQUENT_CHECK;
3005} 3484}
3485#endif
3006 3486
3007#if EV_EMBED_ENABLE 3487#if EV_EMBED_ENABLE
3008void noinline 3488void noinline
3009ev_embed_sweep (EV_P_ ev_embed *w) 3489ev_embed_sweep (EV_P_ ev_embed *w)
3010{ 3490{
3011 ev_loop (w->other, EVLOOP_NONBLOCK); 3491 ev_run (w->other, EVRUN_NOWAIT);
3012} 3492}
3013 3493
3014static void 3494static void
3015embed_io_cb (EV_P_ ev_io *io, int revents) 3495embed_io_cb (EV_P_ ev_io *io, int revents)
3016{ 3496{
3017 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3497 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3018 3498
3019 if (ev_cb (w)) 3499 if (ev_cb (w))
3020 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3500 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3021 else 3501 else
3022 ev_loop (w->other, EVLOOP_NONBLOCK); 3502 ev_run (w->other, EVRUN_NOWAIT);
3023} 3503}
3024 3504
3025static void 3505static void
3026embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3506embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3027{ 3507{
3028 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3508 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3029 3509
3030 { 3510 {
3031 struct ev_loop *loop = w->other; 3511 EV_P = w->other;
3032 3512
3033 while (fdchangecnt) 3513 while (fdchangecnt)
3034 { 3514 {
3035 fd_reify (EV_A); 3515 fd_reify (EV_A);
3036 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3516 ev_run (EV_A_ EVRUN_NOWAIT);
3037 } 3517 }
3038 } 3518 }
3039} 3519}
3040 3520
3041static void 3521static void
… …
3044 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 3524 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3045 3525
3046 ev_embed_stop (EV_A_ w); 3526 ev_embed_stop (EV_A_ w);
3047 3527
3048 { 3528 {
3049 struct ev_loop *loop = w->other; 3529 EV_P = w->other;
3050 3530
3051 ev_loop_fork (EV_A); 3531 ev_loop_fork (EV_A);
3052 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3532 ev_run (EV_A_ EVRUN_NOWAIT);
3053 } 3533 }
3054 3534
3055 ev_embed_start (EV_A_ w); 3535 ev_embed_start (EV_A_ w);
3056} 3536}
3057 3537
… …
3068{ 3548{
3069 if (expect_false (ev_is_active (w))) 3549 if (expect_false (ev_is_active (w)))
3070 return; 3550 return;
3071 3551
3072 { 3552 {
3073 struct ev_loop *loop = w->other; 3553 EV_P = w->other;
3074 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3554 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3075 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3555 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3076 } 3556 }
3077 3557
3078 EV_FREQUENT_CHECK; 3558 EV_FREQUENT_CHECK;
… …
3105 3585
3106 ev_io_stop (EV_A_ &w->io); 3586 ev_io_stop (EV_A_ &w->io);
3107 ev_prepare_stop (EV_A_ &w->prepare); 3587 ev_prepare_stop (EV_A_ &w->prepare);
3108 ev_fork_stop (EV_A_ &w->fork); 3588 ev_fork_stop (EV_A_ &w->fork);
3109 3589
3590 ev_stop (EV_A_ (W)w);
3591
3110 EV_FREQUENT_CHECK; 3592 EV_FREQUENT_CHECK;
3111} 3593}
3112#endif 3594#endif
3113 3595
3114#if EV_FORK_ENABLE 3596#if EV_FORK_ENABLE
… …
3147 3629
3148 EV_FREQUENT_CHECK; 3630 EV_FREQUENT_CHECK;
3149} 3631}
3150#endif 3632#endif
3151 3633
3152#if EV_ASYNC_ENABLE 3634#if EV_CLEANUP_ENABLE
3153void 3635void
3154ev_async_start (EV_P_ ev_async *w) 3636ev_cleanup_start (EV_P_ ev_cleanup *w)
3155{ 3637{
3156 if (expect_false (ev_is_active (w))) 3638 if (expect_false (ev_is_active (w)))
3157 return; 3639 return;
3640
3641 EV_FREQUENT_CHECK;
3642
3643 ev_start (EV_A_ (W)w, ++cleanupcnt);
3644 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
3645 cleanups [cleanupcnt - 1] = w;
3646
3647 /* cleanup watchers should never keep a refcount on the loop */
3648 ev_unref (EV_A);
3649 EV_FREQUENT_CHECK;
3650}
3651
3652void
3653ev_cleanup_stop (EV_P_ ev_cleanup *w)
3654{
3655 clear_pending (EV_A_ (W)w);
3656 if (expect_false (!ev_is_active (w)))
3657 return;
3658
3659 EV_FREQUENT_CHECK;
3660 ev_ref (EV_A);
3661
3662 {
3663 int active = ev_active (w);
3664
3665 cleanups [active - 1] = cleanups [--cleanupcnt];
3666 ev_active (cleanups [active - 1]) = active;
3667 }
3668
3669 ev_stop (EV_A_ (W)w);
3670
3671 EV_FREQUENT_CHECK;
3672}
3673#endif
3674
3675#if EV_ASYNC_ENABLE
3676void
3677ev_async_start (EV_P_ ev_async *w)
3678{
3679 if (expect_false (ev_is_active (w)))
3680 return;
3681
3682 w->sent = 0;
3158 3683
3159 evpipe_init (EV_A); 3684 evpipe_init (EV_A);
3160 3685
3161 EV_FREQUENT_CHECK; 3686 EV_FREQUENT_CHECK;
3162 3687
… …
3190 3715
3191void 3716void
3192ev_async_send (EV_P_ ev_async *w) 3717ev_async_send (EV_P_ ev_async *w)
3193{ 3718{
3194 w->sent = 1; 3719 w->sent = 1;
3195 evpipe_write (EV_A_ &gotasync); 3720 evpipe_write (EV_A_ &async_pending);
3196} 3721}
3197#endif 3722#endif
3198 3723
3199/*****************************************************************************/ 3724/*****************************************************************************/
3200 3725
… …
3240{ 3765{
3241 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3766 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3242 3767
3243 if (expect_false (!once)) 3768 if (expect_false (!once))
3244 { 3769 {
3245 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3770 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3246 return; 3771 return;
3247 } 3772 }
3248 3773
3249 once->cb = cb; 3774 once->cb = cb;
3250 once->arg = arg; 3775 once->arg = arg;
… …
3337 if (types & EV_ASYNC) 3862 if (types & EV_ASYNC)
3338 for (i = asynccnt; i--; ) 3863 for (i = asynccnt; i--; )
3339 cb (EV_A_ EV_ASYNC, asyncs [i]); 3864 cb (EV_A_ EV_ASYNC, asyncs [i]);
3340#endif 3865#endif
3341 3866
3867#if EV_PREPARE_ENABLE
3342 if (types & EV_PREPARE) 3868 if (types & EV_PREPARE)
3343 for (i = preparecnt; i--; ) 3869 for (i = preparecnt; i--; )
3344#if EV_EMBED_ENABLE 3870# if EV_EMBED_ENABLE
3345 if (ev_cb (prepares [i]) != embed_prepare_cb) 3871 if (ev_cb (prepares [i]) != embed_prepare_cb)
3346#endif 3872# endif
3347 cb (EV_A_ EV_PREPARE, prepares [i]); 3873 cb (EV_A_ EV_PREPARE, prepares [i]);
3874#endif
3348 3875
3876#if EV_CHECK_ENABLE
3349 if (types & EV_CHECK) 3877 if (types & EV_CHECK)
3350 for (i = checkcnt; i--; ) 3878 for (i = checkcnt; i--; )
3351 cb (EV_A_ EV_CHECK, checks [i]); 3879 cb (EV_A_ EV_CHECK, checks [i]);
3880#endif
3352 3881
3882#if EV_SIGNAL_ENABLE
3353 if (types & EV_SIGNAL) 3883 if (types & EV_SIGNAL)
3354 for (i = 0; i < signalmax; ++i) 3884 for (i = 0; i < EV_NSIG - 1; ++i)
3355 for (wl = signals [i].head; wl; ) 3885 for (wl = signals [i].head; wl; )
3356 { 3886 {
3357 wn = wl->next; 3887 wn = wl->next;
3358 cb (EV_A_ EV_SIGNAL, wl); 3888 cb (EV_A_ EV_SIGNAL, wl);
3359 wl = wn; 3889 wl = wn;
3360 } 3890 }
3891#endif
3361 3892
3893#if EV_CHILD_ENABLE
3362 if (types & EV_CHILD) 3894 if (types & EV_CHILD)
3363 for (i = EV_PID_HASHSIZE; i--; ) 3895 for (i = (EV_PID_HASHSIZE); i--; )
3364 for (wl = childs [i]; wl; ) 3896 for (wl = childs [i]; wl; )
3365 { 3897 {
3366 wn = wl->next; 3898 wn = wl->next;
3367 cb (EV_A_ EV_CHILD, wl); 3899 cb (EV_A_ EV_CHILD, wl);
3368 wl = wn; 3900 wl = wn;
3369 } 3901 }
3902#endif
3370/* EV_STAT 0x00001000 /* stat data changed */ 3903/* EV_STAT 0x00001000 /* stat data changed */
3371/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 3904/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3372} 3905}
3373#endif 3906#endif
3374 3907
3375#if EV_MULTIPLICITY 3908#if EV_MULTIPLICITY
3376 #include "ev_wrap.h" 3909 #include "ev_wrap.h"
3377#endif 3910#endif
3378 3911
3379#ifdef __cplusplus 3912EV_CPP(})
3380}
3381#endif
3382 3913

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