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Comparing libev/ev.c (file contents):
Revision 1.236 by root, Wed May 7 14:46:22 2008 UTC vs.
Revision 1.379 by root, Sun Jun 19 17:55:13 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 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
10 * 1. Redistributions of source code must retain the above copyright notice, 10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer. 11 * this list of conditions and the following disclaimer.
12 * 12 *
13 * 2. Redistributions in binary form must reproduce the above copyright 13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the 14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution. 15 * documentation and/or other materials provided with the distribution.
16 * 16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
50# endif 46# endif
51 47
48#if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
52#endif
53
54# if HAVE_CLOCK_SYSCALL
55# ifndef EV_USE_CLOCK_SYSCALL
56# define EV_USE_CLOCK_SYSCALL 1
57# ifndef EV_USE_REALTIME
58# define EV_USE_REALTIME 0
59# endif
60# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 1
62# endif
63# endif
64# elif !defined(EV_USE_CLOCK_SYSCALL)
65# define EV_USE_CLOCK_SYSCALL 0
66# endif
67
52# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
53# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
54# define EV_USE_MONOTONIC 1 70# define EV_USE_MONOTONIC 1
55# endif 71# endif
56# ifndef EV_USE_REALTIME 72# ifndef EV_USE_REALTIME
57# define EV_USE_REALTIME 1 73# define EV_USE_REALTIME 0
58# endif 74# endif
59# else 75# else
60# ifndef EV_USE_MONOTONIC 76# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 0 77# define EV_USE_MONOTONIC 0
62# endif 78# endif
63# ifndef EV_USE_REALTIME 79# ifndef EV_USE_REALTIME
64# define EV_USE_REALTIME 0 80# define EV_USE_REALTIME 0
65# endif 81# endif
66# endif 82# endif
67 83
84# if HAVE_NANOSLEEP
68# ifndef EV_USE_NANOSLEEP 85# ifndef EV_USE_NANOSLEEP
69# if HAVE_NANOSLEEP
70# define EV_USE_NANOSLEEP 1 86# define EV_USE_NANOSLEEP EV_FEATURE_OS
87# endif
71# else 88# else
89# undef EV_USE_NANOSLEEP
72# define EV_USE_NANOSLEEP 0 90# define EV_USE_NANOSLEEP 0
91# endif
92
93# if HAVE_SELECT && HAVE_SYS_SELECT_H
94# ifndef EV_USE_SELECT
95# define EV_USE_SELECT EV_FEATURE_BACKENDS
73# endif 96# endif
97# else
98# undef EV_USE_SELECT
99# define EV_USE_SELECT 0
74# endif 100# endif
75 101
102# if HAVE_POLL && HAVE_POLL_H
76# ifndef EV_USE_SELECT 103# ifndef EV_USE_POLL
77# if HAVE_SELECT && HAVE_SYS_SELECT_H 104# define EV_USE_POLL EV_FEATURE_BACKENDS
78# define EV_USE_SELECT 1
79# else
80# define EV_USE_SELECT 0
81# endif 105# endif
82# endif
83
84# ifndef EV_USE_POLL
85# if HAVE_POLL && HAVE_POLL_H
86# define EV_USE_POLL 1
87# else 106# else
107# undef EV_USE_POLL
88# define EV_USE_POLL 0 108# define EV_USE_POLL 0
89# endif
90# endif 109# endif
91 110
92# ifndef EV_USE_EPOLL
93# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 111# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
94# define EV_USE_EPOLL 1 112# ifndef EV_USE_EPOLL
95# else 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
96# define EV_USE_EPOLL 0
97# endif 114# endif
115# else
116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0
98# endif 118# endif
99 119
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
100# ifndef EV_USE_KQUEUE 121# ifndef EV_USE_KQUEUE
101# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
102# define EV_USE_KQUEUE 1
103# else
104# define EV_USE_KQUEUE 0
105# endif 123# endif
124# else
125# undef EV_USE_KQUEUE
126# define EV_USE_KQUEUE 0
106# endif 127# endif
107 128
108# ifndef EV_USE_PORT
109# if HAVE_PORT_H && HAVE_PORT_CREATE 129# if HAVE_PORT_H && HAVE_PORT_CREATE
110# define EV_USE_PORT 1 130# ifndef EV_USE_PORT
111# else 131# define EV_USE_PORT EV_FEATURE_BACKENDS
112# define EV_USE_PORT 0
113# endif 132# endif
133# else
134# undef EV_USE_PORT
135# define EV_USE_PORT 0
114# endif 136# endif
115 137
116# ifndef EV_USE_INOTIFY
117# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 138# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
118# define EV_USE_INOTIFY 1 139# ifndef EV_USE_INOTIFY
119# else
120# define EV_USE_INOTIFY 0 140# define EV_USE_INOTIFY EV_FEATURE_OS
121# endif 141# endif
142# else
143# undef EV_USE_INOTIFY
144# define EV_USE_INOTIFY 0
122# endif 145# endif
123 146
147# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
124# ifndef EV_USE_EVENTFD 148# ifndef EV_USE_SIGNALFD
125# if HAVE_EVENTFD 149# define EV_USE_SIGNALFD EV_FEATURE_OS
126# define EV_USE_EVENTFD 1
127# else
128# define EV_USE_EVENTFD 0
129# endif 150# endif
151# else
152# undef EV_USE_SIGNALFD
153# define EV_USE_SIGNALFD 0
130# endif 154# endif
131 155
156# if HAVE_EVENTFD
157# ifndef EV_USE_EVENTFD
158# define EV_USE_EVENTFD EV_FEATURE_OS
159# endif
160# else
161# undef EV_USE_EVENTFD
162# define EV_USE_EVENTFD 0
132#endif 163# endif
164
165#endif
133 166
134#include <math.h>
135#include <stdlib.h> 167#include <stdlib.h>
168#include <string.h>
136#include <fcntl.h> 169#include <fcntl.h>
137#include <stddef.h> 170#include <stddef.h>
138 171
139#include <stdio.h> 172#include <stdio.h>
140 173
141#include <assert.h> 174#include <assert.h>
142#include <errno.h> 175#include <errno.h>
143#include <sys/types.h> 176#include <sys/types.h>
144#include <time.h> 177#include <time.h>
178#include <limits.h>
145 179
146#include <signal.h> 180#include <signal.h>
147 181
148#ifdef EV_H 182#ifdef EV_H
149# include EV_H 183# include EV_H
150#else 184#else
151# include "ev.h" 185# include "ev.h"
152#endif 186#endif
187
188EV_CPP(extern "C" {)
153 189
154#ifndef _WIN32 190#ifndef _WIN32
155# include <sys/time.h> 191# include <sys/time.h>
156# include <sys/wait.h> 192# include <sys/wait.h>
157# include <unistd.h> 193# include <unistd.h>
158#else 194#else
195# include <io.h>
159# define WIN32_LEAN_AND_MEAN 196# define WIN32_LEAN_AND_MEAN
160# include <windows.h> 197# include <windows.h>
161# ifndef EV_SELECT_IS_WINSOCKET 198# ifndef EV_SELECT_IS_WINSOCKET
162# define EV_SELECT_IS_WINSOCKET 1 199# define EV_SELECT_IS_WINSOCKET 1
163# endif 200# endif
201# undef EV_AVOID_STDIO
164#endif 202#endif
203
204/* OS X, in its infinite idiocy, actually HARDCODES
205 * a limit of 1024 into their select. Where people have brains,
206 * OS X engineers apparently have a vacuum. Or maybe they were
207 * ordered to have a vacuum, or they do anything for money.
208 * This might help. Or not.
209 */
210#define _DARWIN_UNLIMITED_SELECT 1
165 211
166/* this block tries to deduce configuration from header-defined symbols and defaults */ 212/* this block tries to deduce configuration from header-defined symbols and defaults */
167 213
214/* try to deduce the maximum number of signals on this platform */
215#if defined (EV_NSIG)
216/* use what's provided */
217#elif defined (NSIG)
218# define EV_NSIG (NSIG)
219#elif defined(_NSIG)
220# define EV_NSIG (_NSIG)
221#elif defined (SIGMAX)
222# define EV_NSIG (SIGMAX+1)
223#elif defined (SIG_MAX)
224# define EV_NSIG (SIG_MAX+1)
225#elif defined (_SIG_MAX)
226# define EV_NSIG (_SIG_MAX+1)
227#elif defined (MAXSIG)
228# define EV_NSIG (MAXSIG+1)
229#elif defined (MAX_SIG)
230# define EV_NSIG (MAX_SIG+1)
231#elif defined (SIGARRAYSIZE)
232# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
233#elif defined (_sys_nsig)
234# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
235#else
236# error "unable to find value for NSIG, please report"
237/* to make it compile regardless, just remove the above line, */
238/* but consider reporting it, too! :) */
239# define EV_NSIG 65
240#endif
241
242#ifndef EV_USE_FLOOR
243# define EV_USE_FLOOR 0
244#endif
245
246#ifndef EV_USE_CLOCK_SYSCALL
247# if __linux && __GLIBC__ >= 2
248# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
249# else
250# define EV_USE_CLOCK_SYSCALL 0
251# endif
252#endif
253
168#ifndef EV_USE_MONOTONIC 254#ifndef EV_USE_MONOTONIC
255# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
256# define EV_USE_MONOTONIC EV_FEATURE_OS
257# else
169# define EV_USE_MONOTONIC 0 258# define EV_USE_MONOTONIC 0
259# endif
170#endif 260#endif
171 261
172#ifndef EV_USE_REALTIME 262#ifndef EV_USE_REALTIME
173# define EV_USE_REALTIME 0 263# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
174#endif 264#endif
175 265
176#ifndef EV_USE_NANOSLEEP 266#ifndef EV_USE_NANOSLEEP
267# if _POSIX_C_SOURCE >= 199309L
268# define EV_USE_NANOSLEEP EV_FEATURE_OS
269# else
177# define EV_USE_NANOSLEEP 0 270# define EV_USE_NANOSLEEP 0
271# endif
178#endif 272#endif
179 273
180#ifndef EV_USE_SELECT 274#ifndef EV_USE_SELECT
181# define EV_USE_SELECT 1 275# define EV_USE_SELECT EV_FEATURE_BACKENDS
182#endif 276#endif
183 277
184#ifndef EV_USE_POLL 278#ifndef EV_USE_POLL
185# ifdef _WIN32 279# ifdef _WIN32
186# define EV_USE_POLL 0 280# define EV_USE_POLL 0
187# else 281# else
188# define EV_USE_POLL 1 282# define EV_USE_POLL EV_FEATURE_BACKENDS
189# endif 283# endif
190#endif 284#endif
191 285
192#ifndef EV_USE_EPOLL 286#ifndef EV_USE_EPOLL
193# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 287# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
194# define EV_USE_EPOLL 1 288# define EV_USE_EPOLL EV_FEATURE_BACKENDS
195# else 289# else
196# define EV_USE_EPOLL 0 290# define EV_USE_EPOLL 0
197# endif 291# endif
198#endif 292#endif
199 293
… …
205# define EV_USE_PORT 0 299# define EV_USE_PORT 0
206#endif 300#endif
207 301
208#ifndef EV_USE_INOTIFY 302#ifndef EV_USE_INOTIFY
209# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 303# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
210# define EV_USE_INOTIFY 1 304# define EV_USE_INOTIFY EV_FEATURE_OS
211# else 305# else
212# define EV_USE_INOTIFY 0 306# define EV_USE_INOTIFY 0
213# endif 307# endif
214#endif 308#endif
215 309
216#ifndef EV_PID_HASHSIZE 310#ifndef EV_PID_HASHSIZE
217# if EV_MINIMAL 311# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
218# define EV_PID_HASHSIZE 1
219# else
220# define EV_PID_HASHSIZE 16
221# endif
222#endif 312#endif
223 313
224#ifndef EV_INOTIFY_HASHSIZE 314#ifndef EV_INOTIFY_HASHSIZE
225# if EV_MINIMAL 315# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
226# define EV_INOTIFY_HASHSIZE 1
227# else
228# define EV_INOTIFY_HASHSIZE 16
229# endif
230#endif 316#endif
231 317
232#ifndef EV_USE_EVENTFD 318#ifndef EV_USE_EVENTFD
233# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 319# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
234# define EV_USE_EVENTFD 1 320# define EV_USE_EVENTFD EV_FEATURE_OS
235# else 321# else
236# define EV_USE_EVENTFD 0 322# define EV_USE_EVENTFD 0
237# endif 323# endif
238#endif 324#endif
239 325
326#ifndef EV_USE_SIGNALFD
327# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
328# define EV_USE_SIGNALFD EV_FEATURE_OS
329# else
330# define EV_USE_SIGNALFD 0
331# endif
332#endif
333
334#if 0 /* debugging */
335# define EV_VERIFY 3
336# define EV_USE_4HEAP 1
337# define EV_HEAP_CACHE_AT 1
338#endif
339
340#ifndef EV_VERIFY
341# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
342#endif
343
344#ifndef EV_USE_4HEAP
345# define EV_USE_4HEAP EV_FEATURE_DATA
346#endif
347
348#ifndef EV_HEAP_CACHE_AT
349# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
350#endif
351
352/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
353/* which makes programs even slower. might work on other unices, too. */
354#if EV_USE_CLOCK_SYSCALL
355# include <syscall.h>
356# ifdef SYS_clock_gettime
357# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
358# undef EV_USE_MONOTONIC
359# define EV_USE_MONOTONIC 1
360# else
361# undef EV_USE_CLOCK_SYSCALL
362# define EV_USE_CLOCK_SYSCALL 0
363# endif
364#endif
365
240/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 366/* this block fixes any misconfiguration where we know we run into trouble otherwise */
367
368#ifdef _AIX
369/* AIX has a completely broken poll.h header */
370# undef EV_USE_POLL
371# define EV_USE_POLL 0
372#endif
241 373
242#ifndef CLOCK_MONOTONIC 374#ifndef CLOCK_MONOTONIC
243# undef EV_USE_MONOTONIC 375# undef EV_USE_MONOTONIC
244# define EV_USE_MONOTONIC 0 376# define EV_USE_MONOTONIC 0
245#endif 377#endif
… …
253# undef EV_USE_INOTIFY 385# undef EV_USE_INOTIFY
254# define EV_USE_INOTIFY 0 386# define EV_USE_INOTIFY 0
255#endif 387#endif
256 388
257#if !EV_USE_NANOSLEEP 389#if !EV_USE_NANOSLEEP
258# ifndef _WIN32 390/* hp-ux has it in sys/time.h, which we unconditionally include above */
391# if !defined(_WIN32) && !defined(__hpux)
259# include <sys/select.h> 392# include <sys/select.h>
260# endif 393# endif
261#endif 394#endif
262 395
263#if EV_USE_INOTIFY 396#if EV_USE_INOTIFY
397# include <sys/statfs.h>
264# include <sys/inotify.h> 398# include <sys/inotify.h>
399/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
400# ifndef IN_DONT_FOLLOW
401# undef EV_USE_INOTIFY
402# define EV_USE_INOTIFY 0
403# endif
265#endif 404#endif
266 405
267#if EV_SELECT_IS_WINSOCKET 406#if EV_SELECT_IS_WINSOCKET
268# include <winsock.h> 407# include <winsock.h>
269#endif 408#endif
270 409
271#if EV_USE_EVENTFD 410#if EV_USE_EVENTFD
272/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 411/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
273# include <stdint.h> 412# include <stdint.h>
274# ifdef __cplusplus 413# ifndef EFD_NONBLOCK
275extern "C" { 414# define EFD_NONBLOCK O_NONBLOCK
276# endif 415# endif
277int eventfd (unsigned int initval, int flags); 416# ifndef EFD_CLOEXEC
278# ifdef __cplusplus 417# ifdef O_CLOEXEC
279} 418# define EFD_CLOEXEC O_CLOEXEC
419# else
420# define EFD_CLOEXEC 02000000
421# endif
280# endif 422# endif
423EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
424#endif
425
426#if EV_USE_SIGNALFD
427/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
428# include <stdint.h>
429# ifndef SFD_NONBLOCK
430# define SFD_NONBLOCK O_NONBLOCK
431# endif
432# ifndef SFD_CLOEXEC
433# ifdef O_CLOEXEC
434# define SFD_CLOEXEC O_CLOEXEC
435# else
436# define SFD_CLOEXEC 02000000
437# endif
438# endif
439EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
440
441struct signalfd_siginfo
442{
443 uint32_t ssi_signo;
444 char pad[128 - sizeof (uint32_t)];
445};
281#endif 446#endif
282 447
283/**/ 448/**/
284 449
450#if EV_VERIFY >= 3
451# define EV_FREQUENT_CHECK ev_verify (EV_A)
452#else
453# define EV_FREQUENT_CHECK do { } while (0)
454#endif
455
285/* 456/*
286 * This is used to avoid floating point rounding problems. 457 * This is used to work around floating point rounding problems.
287 * It is added to ev_rt_now when scheduling periodics
288 * to ensure progress, time-wise, even when rounding
289 * errors are against us.
290 * This value is good at least till the year 4000. 458 * This value is good at least till the year 4000.
291 * Better solutions welcome.
292 */ 459 */
293#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 460#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
461/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
294 462
295#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 463#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
296#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 464#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
297/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
298 465
299#if __GNUC__ >= 4 466#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
300# define expect(expr,value) __builtin_expect ((expr),(value)) 467#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
301# define noinline __attribute__ ((noinline)) 468
469/* the following are taken from libecb */
470/* ecb.h start */
471
472/* many compilers define _GNUC_ to some versions but then only implement
473 * what their idiot authors think are the "more important" extensions,
474 * causing enourmous grief in return for some better fake benchmark numbers.
475 * or so.
476 * we try to detect these and simply assume they are not gcc - if they have
477 * an issue with that they should have done it right in the first place.
478 */
479#ifndef ECB_GCC_VERSION
480 #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__)
481 #define ECB_GCC_VERSION(major,minor) 0
482 #else
483 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
484 #endif
485#endif
486
487#if __cplusplus
488 #define ecb_inline static inline
489#elif ECB_GCC_VERSION(2,5)
490 #define ecb_inline static __inline__
491#elif ECB_C99
492 #define ecb_inline static inline
302#else 493#else
303# define expect(expr,value) (expr) 494 #define ecb_inline static
304# define noinline
305# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
306# define inline
307# endif 495#endif
308#endif
309 496
497#if ECB_GCC_VERSION(3,1)
498 #define ecb_attribute(attrlist) __attribute__(attrlist)
499 #define ecb_is_constant(expr) __builtin_constant_p (expr)
500 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
501 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
502#else
503 #define ecb_attribute(attrlist)
504 #define ecb_is_constant(expr) 0
505 #define ecb_expect(expr,value) (expr)
506 #define ecb_prefetch(addr,rw,locality)
507#endif
508
509#define ecb_noinline ecb_attribute ((__noinline__))
510#define ecb_noreturn ecb_attribute ((__noreturn__))
511#define ecb_unused ecb_attribute ((__unused__))
512#define ecb_const ecb_attribute ((__const__))
513#define ecb_pure ecb_attribute ((__pure__))
514
515#if ECB_GCC_VERSION(4,3)
516 #define ecb_artificial ecb_attribute ((__artificial__))
517 #define ecb_hot ecb_attribute ((__hot__))
518 #define ecb_cold ecb_attribute ((__cold__))
519#else
520 #define ecb_artificial
521 #define ecb_hot
522 #define ecb_cold
523#endif
524
525/* put around conditional expressions if you are very sure that the */
526/* expression is mostly true or mostly false. note that these return */
527/* booleans, not the expression. */
310#define expect_false(expr) expect ((expr) != 0, 0) 528#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
311#define expect_true(expr) expect ((expr) != 0, 1) 529#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
530/* ecb.h end */
531
532#define expect_false(cond) ecb_expect_false (cond)
533#define expect_true(cond) ecb_expect_true (cond)
534#define noinline ecb_noinline
535
312#define inline_size static inline 536#define inline_size ecb_inline
313 537
314#if EV_MINIMAL 538#if EV_FEATURE_CODE
539# define inline_speed ecb_inline
540#else
315# define inline_speed static noinline 541# define inline_speed static noinline
542#endif
543
544#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
545
546#if EV_MINPRI == EV_MAXPRI
547# define ABSPRI(w) (((W)w), 0)
316#else 548#else
317# define inline_speed static inline
318#endif
319
320#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
321#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 549# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
550#endif
322 551
323#define EMPTY /* required for microsofts broken pseudo-c compiler */ 552#define EMPTY /* required for microsofts broken pseudo-c compiler */
324#define EMPTY2(a,b) /* used to suppress some warnings */ 553#define EMPTY2(a,b) /* used to suppress some warnings */
325 554
326typedef ev_watcher *W; 555typedef ev_watcher *W;
… …
328typedef ev_watcher_time *WT; 557typedef ev_watcher_time *WT;
329 558
330#define ev_active(w) ((W)(w))->active 559#define ev_active(w) ((W)(w))->active
331#define ev_at(w) ((WT)(w))->at 560#define ev_at(w) ((WT)(w))->at
332 561
562#if EV_USE_REALTIME
563/* sig_atomic_t is used to avoid per-thread variables or locking but still */
564/* giving it a reasonably high chance of working on typical architectures */
565static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
566#endif
567
333#if EV_USE_MONOTONIC 568#if EV_USE_MONOTONIC
334/* sig_atomic_t is used to avoid per-thread variables or locking but still */
335/* giving it a reasonably high chance of working on typical architetcures */
336static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 569static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
570#endif
571
572#ifndef EV_FD_TO_WIN32_HANDLE
573# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
574#endif
575#ifndef EV_WIN32_HANDLE_TO_FD
576# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
577#endif
578#ifndef EV_WIN32_CLOSE_FD
579# define EV_WIN32_CLOSE_FD(fd) close (fd)
337#endif 580#endif
338 581
339#ifdef _WIN32 582#ifdef _WIN32
340# include "ev_win32.c" 583# include "ev_win32.c"
341#endif 584#endif
342 585
343/*****************************************************************************/ 586/*****************************************************************************/
344 587
588/* define a suitable floor function (only used by periodics atm) */
589
590#if EV_USE_FLOOR
591# include <math.h>
592# define ev_floor(v) floor (v)
593#else
594
595#include <float.h>
596
597/* a floor() replacement function, should be independent of ev_tstamp type */
598static ev_tstamp noinline
599ev_floor (ev_tstamp v)
600{
601 /* the choice of shift factor is not terribly important */
602#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
603 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
604#else
605 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
606#endif
607
608 /* argument too large for an unsigned long? */
609 if (expect_false (v >= shift))
610 {
611 ev_tstamp f;
612
613 if (v == v - 1.)
614 return v; /* very large number */
615
616 f = shift * ev_floor (v * (1. / shift));
617 return f + ev_floor (v - f);
618 }
619
620 /* special treatment for negative args? */
621 if (expect_false (v < 0.))
622 {
623 ev_tstamp f = -ev_floor (-v);
624
625 return f - (f == v ? 0 : 1);
626 }
627
628 /* fits into an unsigned long */
629 return (unsigned long)v;
630}
631
632#endif
633
634/*****************************************************************************/
635
636#ifdef __linux
637# include <sys/utsname.h>
638#endif
639
640static unsigned int noinline ecb_cold
641ev_linux_version (void)
642{
643#ifdef __linux
644 unsigned int v = 0;
645 struct utsname buf;
646 int i;
647 char *p = buf.release;
648
649 if (uname (&buf))
650 return 0;
651
652 for (i = 3+1; --i; )
653 {
654 unsigned int c = 0;
655
656 for (;;)
657 {
658 if (*p >= '0' && *p <= '9')
659 c = c * 10 + *p++ - '0';
660 else
661 {
662 p += *p == '.';
663 break;
664 }
665 }
666
667 v = (v << 8) | c;
668 }
669
670 return v;
671#else
672 return 0;
673#endif
674}
675
676/*****************************************************************************/
677
678#if EV_AVOID_STDIO
679static void noinline ecb_cold
680ev_printerr (const char *msg)
681{
682 write (STDERR_FILENO, msg, strlen (msg));
683}
684#endif
685
345static void (*syserr_cb)(const char *msg); 686static void (*syserr_cb)(const char *msg);
346 687
347void 688void ecb_cold
348ev_set_syserr_cb (void (*cb)(const char *msg)) 689ev_set_syserr_cb (void (*cb)(const char *msg))
349{ 690{
350 syserr_cb = cb; 691 syserr_cb = cb;
351} 692}
352 693
353static void noinline 694static void noinline ecb_cold
354syserr (const char *msg) 695ev_syserr (const char *msg)
355{ 696{
356 if (!msg) 697 if (!msg)
357 msg = "(libev) system error"; 698 msg = "(libev) system error";
358 699
359 if (syserr_cb) 700 if (syserr_cb)
360 syserr_cb (msg); 701 syserr_cb (msg);
361 else 702 else
362 { 703 {
704#if EV_AVOID_STDIO
705 ev_printerr (msg);
706 ev_printerr (": ");
707 ev_printerr (strerror (errno));
708 ev_printerr ("\n");
709#else
363 perror (msg); 710 perror (msg);
711#endif
364 abort (); 712 abort ();
365 } 713 }
366} 714}
367 715
368static void * 716static void *
369ev_realloc_emul (void *ptr, long size) 717ev_realloc_emul (void *ptr, long size)
370{ 718{
719#if __GLIBC__
720 return realloc (ptr, size);
721#else
371 /* some systems, notably openbsd and darwin, fail to properly 722 /* some systems, notably openbsd and darwin, fail to properly
372 * implement realloc (x, 0) (as required by both ansi c-98 and 723 * implement realloc (x, 0) (as required by both ansi c-89 and
373 * the single unix specification, so work around them here. 724 * the single unix specification, so work around them here.
374 */ 725 */
375 726
376 if (size) 727 if (size)
377 return realloc (ptr, size); 728 return realloc (ptr, size);
378 729
379 free (ptr); 730 free (ptr);
380 return 0; 731 return 0;
732#endif
381} 733}
382 734
383static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 735static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
384 736
385void 737void ecb_cold
386ev_set_allocator (void *(*cb)(void *ptr, long size)) 738ev_set_allocator (void *(*cb)(void *ptr, long size))
387{ 739{
388 alloc = cb; 740 alloc = cb;
389} 741}
390 742
… …
393{ 745{
394 ptr = alloc (ptr, size); 746 ptr = alloc (ptr, size);
395 747
396 if (!ptr && size) 748 if (!ptr && size)
397 { 749 {
750#if EV_AVOID_STDIO
751 ev_printerr ("(libev) memory allocation failed, aborting.\n");
752#else
398 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 753 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
754#endif
399 abort (); 755 abort ();
400 } 756 }
401 757
402 return ptr; 758 return ptr;
403} 759}
… …
405#define ev_malloc(size) ev_realloc (0, (size)) 761#define ev_malloc(size) ev_realloc (0, (size))
406#define ev_free(ptr) ev_realloc ((ptr), 0) 762#define ev_free(ptr) ev_realloc ((ptr), 0)
407 763
408/*****************************************************************************/ 764/*****************************************************************************/
409 765
766/* set in reify when reification needed */
767#define EV_ANFD_REIFY 1
768
769/* file descriptor info structure */
410typedef struct 770typedef struct
411{ 771{
412 WL head; 772 WL head;
413 unsigned char events; 773 unsigned char events; /* the events watched for */
774 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
775 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
414 unsigned char reify; 776 unsigned char unused;
777#if EV_USE_EPOLL
778 unsigned int egen; /* generation counter to counter epoll bugs */
779#endif
415#if EV_SELECT_IS_WINSOCKET 780#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
416 SOCKET handle; 781 SOCKET handle;
417#endif 782#endif
783#if EV_USE_IOCP
784 OVERLAPPED or, ow;
785#endif
418} ANFD; 786} ANFD;
419 787
788/* stores the pending event set for a given watcher */
420typedef struct 789typedef struct
421{ 790{
422 W w; 791 W w;
423 int events; 792 int events; /* the pending event set for the given watcher */
424} ANPENDING; 793} ANPENDING;
425 794
426#if EV_USE_INOTIFY 795#if EV_USE_INOTIFY
796/* hash table entry per inotify-id */
427typedef struct 797typedef struct
428{ 798{
429 WL head; 799 WL head;
430} ANFS; 800} ANFS;
801#endif
802
803/* Heap Entry */
804#if EV_HEAP_CACHE_AT
805 /* a heap element */
806 typedef struct {
807 ev_tstamp at;
808 WT w;
809 } ANHE;
810
811 #define ANHE_w(he) (he).w /* access watcher, read-write */
812 #define ANHE_at(he) (he).at /* access cached at, read-only */
813 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
814#else
815 /* a heap element */
816 typedef WT ANHE;
817
818 #define ANHE_w(he) (he)
819 #define ANHE_at(he) (he)->at
820 #define ANHE_at_cache(he)
431#endif 821#endif
432 822
433#if EV_MULTIPLICITY 823#if EV_MULTIPLICITY
434 824
435 struct ev_loop 825 struct ev_loop
… …
454 844
455 static int ev_default_loop_ptr; 845 static int ev_default_loop_ptr;
456 846
457#endif 847#endif
458 848
849#if EV_FEATURE_API
850# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
851# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
852# define EV_INVOKE_PENDING invoke_cb (EV_A)
853#else
854# define EV_RELEASE_CB (void)0
855# define EV_ACQUIRE_CB (void)0
856# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
857#endif
858
859#define EVBREAK_RECURSE 0x80
860
459/*****************************************************************************/ 861/*****************************************************************************/
460 862
863#ifndef EV_HAVE_EV_TIME
461ev_tstamp 864ev_tstamp
462ev_time (void) 865ev_time (void)
463{ 866{
464#if EV_USE_REALTIME 867#if EV_USE_REALTIME
868 if (expect_true (have_realtime))
869 {
465 struct timespec ts; 870 struct timespec ts;
466 clock_gettime (CLOCK_REALTIME, &ts); 871 clock_gettime (CLOCK_REALTIME, &ts);
467 return ts.tv_sec + ts.tv_nsec * 1e-9; 872 return ts.tv_sec + ts.tv_nsec * 1e-9;
468#else 873 }
874#endif
875
469 struct timeval tv; 876 struct timeval tv;
470 gettimeofday (&tv, 0); 877 gettimeofday (&tv, 0);
471 return tv.tv_sec + tv.tv_usec * 1e-6; 878 return tv.tv_sec + tv.tv_usec * 1e-6;
472#endif
473} 879}
880#endif
474 881
475ev_tstamp inline_size 882inline_size ev_tstamp
476get_clock (void) 883get_clock (void)
477{ 884{
478#if EV_USE_MONOTONIC 885#if EV_USE_MONOTONIC
479 if (expect_true (have_monotonic)) 886 if (expect_true (have_monotonic))
480 { 887 {
… …
501 if (delay > 0.) 908 if (delay > 0.)
502 { 909 {
503#if EV_USE_NANOSLEEP 910#if EV_USE_NANOSLEEP
504 struct timespec ts; 911 struct timespec ts;
505 912
506 ts.tv_sec = (time_t)delay; 913 EV_TS_SET (ts, delay);
507 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
508
509 nanosleep (&ts, 0); 914 nanosleep (&ts, 0);
510#elif defined(_WIN32) 915#elif defined(_WIN32)
511 Sleep ((unsigned long)(delay * 1e3)); 916 Sleep ((unsigned long)(delay * 1e3));
512#else 917#else
513 struct timeval tv; 918 struct timeval tv;
514 919
515 tv.tv_sec = (time_t)delay; 920 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
516 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 921 /* something not guaranteed by newer posix versions, but guaranteed */
517 922 /* by older ones */
923 EV_TV_SET (tv, delay);
518 select (0, 0, 0, 0, &tv); 924 select (0, 0, 0, 0, &tv);
519#endif 925#endif
520 } 926 }
521} 927}
522 928
523/*****************************************************************************/ 929/*****************************************************************************/
524 930
525#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 931#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
526 932
527int inline_size 933/* find a suitable new size for the given array, */
934/* hopefully by rounding to a nice-to-malloc size */
935inline_size int
528array_nextsize (int elem, int cur, int cnt) 936array_nextsize (int elem, int cur, int cnt)
529{ 937{
530 int ncur = cur + 1; 938 int ncur = cur + 1;
531 939
532 do 940 do
… …
543 } 951 }
544 952
545 return ncur; 953 return ncur;
546} 954}
547 955
548static noinline void * 956static void * noinline ecb_cold
549array_realloc (int elem, void *base, int *cur, int cnt) 957array_realloc (int elem, void *base, int *cur, int cnt)
550{ 958{
551 *cur = array_nextsize (elem, *cur, cnt); 959 *cur = array_nextsize (elem, *cur, cnt);
552 return ev_realloc (base, elem * *cur); 960 return ev_realloc (base, elem * *cur);
553} 961}
962
963#define array_init_zero(base,count) \
964 memset ((void *)(base), 0, sizeof (*(base)) * (count))
554 965
555#define array_needsize(type,base,cur,cnt,init) \ 966#define array_needsize(type,base,cur,cnt,init) \
556 if (expect_false ((cnt) > (cur))) \ 967 if (expect_false ((cnt) > (cur))) \
557 { \ 968 { \
558 int ocur_ = (cur); \ 969 int ocur_ = (cur); \
… …
570 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 981 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
571 } 982 }
572#endif 983#endif
573 984
574#define array_free(stem, idx) \ 985#define array_free(stem, idx) \
575 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 986 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
576 987
577/*****************************************************************************/ 988/*****************************************************************************/
989
990/* dummy callback for pending events */
991static void noinline
992pendingcb (EV_P_ ev_prepare *w, int revents)
993{
994}
578 995
579void noinline 996void noinline
580ev_feed_event (EV_P_ void *w, int revents) 997ev_feed_event (EV_P_ void *w, int revents)
581{ 998{
582 W w_ = (W)w; 999 W w_ = (W)w;
… …
591 pendings [pri][w_->pending - 1].w = w_; 1008 pendings [pri][w_->pending - 1].w = w_;
592 pendings [pri][w_->pending - 1].events = revents; 1009 pendings [pri][w_->pending - 1].events = revents;
593 } 1010 }
594} 1011}
595 1012
596void inline_speed 1013inline_speed void
1014feed_reverse (EV_P_ W w)
1015{
1016 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
1017 rfeeds [rfeedcnt++] = w;
1018}
1019
1020inline_size void
1021feed_reverse_done (EV_P_ int revents)
1022{
1023 do
1024 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
1025 while (rfeedcnt);
1026}
1027
1028inline_speed void
597queue_events (EV_P_ W *events, int eventcnt, int type) 1029queue_events (EV_P_ W *events, int eventcnt, int type)
598{ 1030{
599 int i; 1031 int i;
600 1032
601 for (i = 0; i < eventcnt; ++i) 1033 for (i = 0; i < eventcnt; ++i)
602 ev_feed_event (EV_A_ events [i], type); 1034 ev_feed_event (EV_A_ events [i], type);
603} 1035}
604 1036
605/*****************************************************************************/ 1037/*****************************************************************************/
606 1038
607void inline_size 1039inline_speed void
608anfds_init (ANFD *base, int count)
609{
610 while (count--)
611 {
612 base->head = 0;
613 base->events = EV_NONE;
614 base->reify = 0;
615
616 ++base;
617 }
618}
619
620void inline_speed
621fd_event (EV_P_ int fd, int revents) 1040fd_event_nocheck (EV_P_ int fd, int revents)
622{ 1041{
623 ANFD *anfd = anfds + fd; 1042 ANFD *anfd = anfds + fd;
624 ev_io *w; 1043 ev_io *w;
625 1044
626 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1045 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
630 if (ev) 1049 if (ev)
631 ev_feed_event (EV_A_ (W)w, ev); 1050 ev_feed_event (EV_A_ (W)w, ev);
632 } 1051 }
633} 1052}
634 1053
1054/* do not submit kernel events for fds that have reify set */
1055/* because that means they changed while we were polling for new events */
1056inline_speed void
1057fd_event (EV_P_ int fd, int revents)
1058{
1059 ANFD *anfd = anfds + fd;
1060
1061 if (expect_true (!anfd->reify))
1062 fd_event_nocheck (EV_A_ fd, revents);
1063}
1064
635void 1065void
636ev_feed_fd_event (EV_P_ int fd, int revents) 1066ev_feed_fd_event (EV_P_ int fd, int revents)
637{ 1067{
638 if (fd >= 0 && fd < anfdmax) 1068 if (fd >= 0 && fd < anfdmax)
639 fd_event (EV_A_ fd, revents); 1069 fd_event_nocheck (EV_A_ fd, revents);
640} 1070}
641 1071
642void inline_size 1072/* make sure the external fd watch events are in-sync */
1073/* with the kernel/libev internal state */
1074inline_size void
643fd_reify (EV_P) 1075fd_reify (EV_P)
644{ 1076{
645 int i; 1077 int i;
1078
1079#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1080 for (i = 0; i < fdchangecnt; ++i)
1081 {
1082 int fd = fdchanges [i];
1083 ANFD *anfd = anfds + fd;
1084
1085 if (anfd->reify & EV__IOFDSET && anfd->head)
1086 {
1087 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1088
1089 if (handle != anfd->handle)
1090 {
1091 unsigned long arg;
1092
1093 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1094
1095 /* handle changed, but fd didn't - we need to do it in two steps */
1096 backend_modify (EV_A_ fd, anfd->events, 0);
1097 anfd->events = 0;
1098 anfd->handle = handle;
1099 }
1100 }
1101 }
1102#endif
646 1103
647 for (i = 0; i < fdchangecnt; ++i) 1104 for (i = 0; i < fdchangecnt; ++i)
648 { 1105 {
649 int fd = fdchanges [i]; 1106 int fd = fdchanges [i];
650 ANFD *anfd = anfds + fd; 1107 ANFD *anfd = anfds + fd;
651 ev_io *w; 1108 ev_io *w;
652 1109
653 unsigned char events = 0; 1110 unsigned char o_events = anfd->events;
1111 unsigned char o_reify = anfd->reify;
654 1112
655 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1113 anfd->reify = 0;
656 events |= (unsigned char)w->events;
657 1114
658#if EV_SELECT_IS_WINSOCKET 1115 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
659 if (events)
660 { 1116 {
661 unsigned long argp; 1117 anfd->events = 0;
662 #ifdef EV_FD_TO_WIN32_HANDLE 1118
663 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1119 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
664 #else 1120 anfd->events |= (unsigned char)w->events;
665 anfd->handle = _get_osfhandle (fd); 1121
666 #endif 1122 if (o_events != anfd->events)
667 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 1123 o_reify = EV__IOFDSET; /* actually |= */
668 } 1124 }
669#endif
670 1125
671 { 1126 if (o_reify & EV__IOFDSET)
672 unsigned char o_events = anfd->events;
673 unsigned char o_reify = anfd->reify;
674
675 anfd->reify = 0;
676 anfd->events = events;
677
678 if (o_events != events || o_reify & EV_IOFDSET)
679 backend_modify (EV_A_ fd, o_events, events); 1127 backend_modify (EV_A_ fd, o_events, anfd->events);
680 }
681 } 1128 }
682 1129
683 fdchangecnt = 0; 1130 fdchangecnt = 0;
684} 1131}
685 1132
686void inline_size 1133/* something about the given fd changed */
1134inline_size void
687fd_change (EV_P_ int fd, int flags) 1135fd_change (EV_P_ int fd, int flags)
688{ 1136{
689 unsigned char reify = anfds [fd].reify; 1137 unsigned char reify = anfds [fd].reify;
690 anfds [fd].reify |= flags; 1138 anfds [fd].reify |= flags;
691 1139
… …
695 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1143 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
696 fdchanges [fdchangecnt - 1] = fd; 1144 fdchanges [fdchangecnt - 1] = fd;
697 } 1145 }
698} 1146}
699 1147
700void inline_speed 1148/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1149inline_speed void ecb_cold
701fd_kill (EV_P_ int fd) 1150fd_kill (EV_P_ int fd)
702{ 1151{
703 ev_io *w; 1152 ev_io *w;
704 1153
705 while ((w = (ev_io *)anfds [fd].head)) 1154 while ((w = (ev_io *)anfds [fd].head))
… …
707 ev_io_stop (EV_A_ w); 1156 ev_io_stop (EV_A_ w);
708 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1157 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
709 } 1158 }
710} 1159}
711 1160
712int inline_size 1161/* check whether the given fd is actually valid, for error recovery */
1162inline_size int ecb_cold
713fd_valid (int fd) 1163fd_valid (int fd)
714{ 1164{
715#ifdef _WIN32 1165#ifdef _WIN32
716 return _get_osfhandle (fd) != -1; 1166 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
717#else 1167#else
718 return fcntl (fd, F_GETFD) != -1; 1168 return fcntl (fd, F_GETFD) != -1;
719#endif 1169#endif
720} 1170}
721 1171
722/* called on EBADF to verify fds */ 1172/* called on EBADF to verify fds */
723static void noinline 1173static void noinline ecb_cold
724fd_ebadf (EV_P) 1174fd_ebadf (EV_P)
725{ 1175{
726 int fd; 1176 int fd;
727 1177
728 for (fd = 0; fd < anfdmax; ++fd) 1178 for (fd = 0; fd < anfdmax; ++fd)
729 if (anfds [fd].events) 1179 if (anfds [fd].events)
730 if (!fd_valid (fd) == -1 && errno == EBADF) 1180 if (!fd_valid (fd) && errno == EBADF)
731 fd_kill (EV_A_ fd); 1181 fd_kill (EV_A_ fd);
732} 1182}
733 1183
734/* called on ENOMEM in select/poll to kill some fds and retry */ 1184/* called on ENOMEM in select/poll to kill some fds and retry */
735static void noinline 1185static void noinline ecb_cold
736fd_enomem (EV_P) 1186fd_enomem (EV_P)
737{ 1187{
738 int fd; 1188 int fd;
739 1189
740 for (fd = anfdmax; fd--; ) 1190 for (fd = anfdmax; fd--; )
741 if (anfds [fd].events) 1191 if (anfds [fd].events)
742 { 1192 {
743 fd_kill (EV_A_ fd); 1193 fd_kill (EV_A_ fd);
744 return; 1194 break;
745 } 1195 }
746} 1196}
747 1197
748/* usually called after fork if backend needs to re-arm all fds from scratch */ 1198/* usually called after fork if backend needs to re-arm all fds from scratch */
749static void noinline 1199static void noinline
… …
753 1203
754 for (fd = 0; fd < anfdmax; ++fd) 1204 for (fd = 0; fd < anfdmax; ++fd)
755 if (anfds [fd].events) 1205 if (anfds [fd].events)
756 { 1206 {
757 anfds [fd].events = 0; 1207 anfds [fd].events = 0;
1208 anfds [fd].emask = 0;
758 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1209 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
759 } 1210 }
760} 1211}
761 1212
1213/* used to prepare libev internal fd's */
1214/* this is not fork-safe */
1215inline_speed void
1216fd_intern (int fd)
1217{
1218#ifdef _WIN32
1219 unsigned long arg = 1;
1220 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1221#else
1222 fcntl (fd, F_SETFD, FD_CLOEXEC);
1223 fcntl (fd, F_SETFL, O_NONBLOCK);
1224#endif
1225}
1226
762/*****************************************************************************/ 1227/*****************************************************************************/
1228
1229/*
1230 * the heap functions want a real array index. array index 0 is guaranteed to not
1231 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1232 * the branching factor of the d-tree.
1233 */
763 1234
764/* 1235/*
765 * at the moment we allow libev the luxury of two heaps, 1236 * at the moment we allow libev the luxury of two heaps,
766 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap 1237 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap
767 * which is more cache-efficient. 1238 * which is more cache-efficient.
768 * the difference is about 5% with 50000+ watchers. 1239 * the difference is about 5% with 50000+ watchers.
769 */ 1240 */
770#define USE_4HEAP !EV_MINIMAL
771#if USE_4HEAP 1241#if EV_USE_4HEAP
772 1242
1243#define DHEAP 4
773#define HEAP0 3 /* index of first element in heap */ 1244#define HEAP0 (DHEAP - 1) /* index of first element in heap */
1245#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
1246#define UPHEAP_DONE(p,k) ((p) == (k))
774 1247
775/* towards the root */ 1248/* away from the root */
776void inline_speed 1249inline_speed void
777upheap (WT *heap, int k) 1250downheap (ANHE *heap, int N, int k)
778{ 1251{
779 WT w = heap [k]; 1252 ANHE he = heap [k];
1253 ANHE *E = heap + N + HEAP0;
780 1254
781 for (;;) 1255 for (;;)
782 { 1256 {
783 int p = ((k - HEAP0 - 1) / 4) + HEAP0;
784
785 if (p >= HEAP0 || heap [p]->at <= w->at)
786 break;
787
788 heap [k] = heap [p];
789 ev_active (heap [k]) = k;
790 k = p;
791 }
792
793 heap [k] = w;
794 ev_active (heap [k]) = k;
795}
796
797/* away from the root */
798void inline_speed
799downheap (WT *heap, int N, int k)
800{
801 WT w = heap [k];
802 WT *E = heap + N + HEAP0;
803
804 for (;;)
805 {
806 ev_tstamp minat; 1257 ev_tstamp minat;
807 WT *minpos; 1258 ANHE *minpos;
808 WT *pos = heap + 4 * (k - HEAP0) + HEAP0; 1259 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
809 1260
810 // find minimum child 1261 /* find minimum child */
811 if (expect_true (pos +3 < E)) 1262 if (expect_true (pos + DHEAP - 1 < E))
812 { 1263 {
813 /* fast path */
814 (minpos = pos + 0), (minat = (*minpos)->at); 1264 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
815 if (pos [1]->at < minat) (minpos = pos + 1), (minat = (*minpos)->at); 1265 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
816 if (pos [2]->at < minat) (minpos = pos + 2), (minat = (*minpos)->at); 1266 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
817 if (pos [3]->at < minat) (minpos = pos + 3), (minat = (*minpos)->at); 1267 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1268 }
1269 else if (pos < E)
1270 {
1271 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1272 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1273 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1274 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
818 } 1275 }
819 else 1276 else
820 {
821 /* slow path */
822 if (pos >= E)
823 break;
824 (minpos = pos + 0), (minat = (*minpos)->at);
825 if (pos + 1 < E && pos [1]->at < minat) (minpos = pos + 1), (minat = (*minpos)->at);
826 if (pos + 2 < E && pos [2]->at < minat) (minpos = pos + 2), (minat = (*minpos)->at);
827 if (pos + 3 < E && pos [3]->at < minat) (minpos = pos + 3), (minat = (*minpos)->at);
828 }
829
830 if (w->at <= minat)
831 break; 1277 break;
832 1278
833 ev_active (*minpos) = k; 1279 if (ANHE_at (he) <= minat)
1280 break;
1281
834 heap [k] = *minpos; 1282 heap [k] = *minpos;
1283 ev_active (ANHE_w (*minpos)) = k;
835 1284
836 k = minpos - heap; 1285 k = minpos - heap;
837 } 1286 }
838 1287
839 heap [k] = w; 1288 heap [k] = he;
840 ev_active (heap [k]) = k; 1289 ev_active (ANHE_w (he)) = k;
841} 1290}
842 1291
843#else // 4HEAP 1292#else /* 4HEAP */
844 1293
845#define HEAP0 1 1294#define HEAP0 1
1295#define HPARENT(k) ((k) >> 1)
1296#define UPHEAP_DONE(p,k) (!(p))
846 1297
847/* towards the root */ 1298/* away from the root */
848void inline_speed 1299inline_speed void
849upheap (WT *heap, int k) 1300downheap (ANHE *heap, int N, int k)
850{ 1301{
851 WT w = heap [k]; 1302 ANHE he = heap [k];
852 1303
853 for (;;) 1304 for (;;)
854 { 1305 {
855 int p = k >> 1; 1306 int c = k << 1;
856 1307
857 /* maybe we could use a dummy element at heap [0]? */ 1308 if (c >= N + HEAP0)
858 if (!p || heap [p]->at <= w->at)
859 break; 1309 break;
860 1310
861 heap [k] = heap [p]; 1311 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
862 ev_active (heap [k]) = k; 1312 ? 1 : 0;
863 k = p;
864 }
865 1313
866 heap [k] = w; 1314 if (ANHE_at (he) <= ANHE_at (heap [c]))
867 ev_active (heap [k]) = k;
868}
869
870/* away from the root */
871void inline_speed
872downheap (WT *heap, int N, int k)
873{
874 WT w = heap [k];
875
876 for (;;)
877 {
878 int c = k << 1;
879
880 if (c > N)
881 break; 1315 break;
882 1316
883 c += c + 1 < N && heap [c]->at > heap [c + 1]->at
884 ? 1 : 0;
885
886 if (w->at <= heap [c]->at)
887 break;
888
889 heap [k] = heap [c]; 1317 heap [k] = heap [c];
890 ((W)heap [k])->active = k; 1318 ev_active (ANHE_w (heap [k])) = k;
891 1319
892 k = c; 1320 k = c;
893 } 1321 }
894 1322
895 heap [k] = w; 1323 heap [k] = he;
1324 ev_active (ANHE_w (he)) = k;
1325}
1326#endif
1327
1328/* towards the root */
1329inline_speed void
1330upheap (ANHE *heap, int k)
1331{
1332 ANHE he = heap [k];
1333
1334 for (;;)
1335 {
1336 int p = HPARENT (k);
1337
1338 if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
1339 break;
1340
1341 heap [k] = heap [p];
896 ev_active (heap [k]) = k; 1342 ev_active (ANHE_w (heap [k])) = k;
897} 1343 k = p;
898#endif 1344 }
899 1345
900void inline_size 1346 heap [k] = he;
1347 ev_active (ANHE_w (he)) = k;
1348}
1349
1350/* move an element suitably so it is in a correct place */
1351inline_size void
901adjustheap (WT *heap, int N, int k) 1352adjustheap (ANHE *heap, int N, int k)
902{ 1353{
1354 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
903 upheap (heap, k); 1355 upheap (heap, k);
1356 else
904 downheap (heap, N, k); 1357 downheap (heap, N, k);
1358}
1359
1360/* rebuild the heap: this function is used only once and executed rarely */
1361inline_size void
1362reheap (ANHE *heap, int N)
1363{
1364 int i;
1365
1366 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
1367 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
1368 for (i = 0; i < N; ++i)
1369 upheap (heap, i + HEAP0);
905} 1370}
906 1371
907/*****************************************************************************/ 1372/*****************************************************************************/
908 1373
1374/* associate signal watchers to a signal signal */
909typedef struct 1375typedef struct
910{ 1376{
1377 EV_ATOMIC_T pending;
1378#if EV_MULTIPLICITY
1379 EV_P;
1380#endif
911 WL head; 1381 WL head;
912 EV_ATOMIC_T gotsig;
913} ANSIG; 1382} ANSIG;
914 1383
915static ANSIG *signals; 1384static ANSIG signals [EV_NSIG - 1];
916static int signalmax;
917
918static EV_ATOMIC_T gotsig;
919
920void inline_size
921signals_init (ANSIG *base, int count)
922{
923 while (count--)
924 {
925 base->head = 0;
926 base->gotsig = 0;
927
928 ++base;
929 }
930}
931 1385
932/*****************************************************************************/ 1386/*****************************************************************************/
933 1387
934void inline_speed 1388#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
935fd_intern (int fd)
936{
937#ifdef _WIN32
938 int arg = 1;
939 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
940#else
941 fcntl (fd, F_SETFD, FD_CLOEXEC);
942 fcntl (fd, F_SETFL, O_NONBLOCK);
943#endif
944}
945 1389
946static void noinline 1390static void noinline ecb_cold
947evpipe_init (EV_P) 1391evpipe_init (EV_P)
948{ 1392{
949 if (!ev_is_active (&pipeev)) 1393 if (!ev_is_active (&pipe_w))
950 { 1394 {
951#if EV_USE_EVENTFD 1395# if EV_USE_EVENTFD
1396 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1397 if (evfd < 0 && errno == EINVAL)
952 if ((evfd = eventfd (0, 0)) >= 0) 1398 evfd = eventfd (0, 0);
1399
1400 if (evfd >= 0)
953 { 1401 {
954 evpipe [0] = -1; 1402 evpipe [0] = -1;
955 fd_intern (evfd); 1403 fd_intern (evfd); /* doing it twice doesn't hurt */
956 ev_io_set (&pipeev, evfd, EV_READ); 1404 ev_io_set (&pipe_w, evfd, EV_READ);
957 } 1405 }
958 else 1406 else
959#endif 1407# endif
960 { 1408 {
961 while (pipe (evpipe)) 1409 while (pipe (evpipe))
962 syserr ("(libev) error creating signal/async pipe"); 1410 ev_syserr ("(libev) error creating signal/async pipe");
963 1411
964 fd_intern (evpipe [0]); 1412 fd_intern (evpipe [0]);
965 fd_intern (evpipe [1]); 1413 fd_intern (evpipe [1]);
966 ev_io_set (&pipeev, evpipe [0], EV_READ); 1414 ev_io_set (&pipe_w, evpipe [0], EV_READ);
967 } 1415 }
968 1416
969 ev_io_start (EV_A_ &pipeev); 1417 ev_io_start (EV_A_ &pipe_w);
970 ev_unref (EV_A); /* watcher should not keep loop alive */ 1418 ev_unref (EV_A); /* watcher should not keep loop alive */
971 } 1419 }
972} 1420}
973 1421
974void inline_size 1422inline_size void
975evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1423evpipe_write (EV_P_ EV_ATOMIC_T *flag)
976{ 1424{
977 if (!*flag) 1425 if (!*flag)
978 { 1426 {
979 int old_errno = errno; /* save errno because write might clobber it */
980
981 *flag = 1; 1427 *flag = 1;
982 1428
1429 pipe_write_skipped = 1;
1430
1431 if (pipe_write_wanted)
1432 {
1433 int old_errno = errno; /* save errno because write will clobber it */
1434 char dummy;
1435
1436 pipe_write_skipped = 0;
1437
1438#if EV_USE_EVENTFD
1439 if (evfd >= 0)
1440 {
1441 uint64_t counter = 1;
1442 write (evfd, &counter, sizeof (uint64_t));
1443 }
1444 else
1445#endif
1446 {
1447 /* win32 people keep sending patches that change this write() to send() */
1448 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1449 /* so when you think this write should be a send instead, please find out */
1450 /* where your send() is from - it's definitely not the microsoft send, and */
1451 /* tell me. thank you. */
1452 write (evpipe [1], &dummy, 1);
1453 }
1454
1455 errno = old_errno;
1456 }
1457 }
1458}
1459
1460/* called whenever the libev signal pipe */
1461/* got some events (signal, async) */
1462static void
1463pipecb (EV_P_ ev_io *iow, int revents)
1464{
1465 int i;
1466
1467 if (revents & EV_READ)
1468 {
983#if EV_USE_EVENTFD 1469#if EV_USE_EVENTFD
984 if (evfd >= 0) 1470 if (evfd >= 0)
985 { 1471 {
986 uint64_t counter = 1; 1472 uint64_t counter;
987 write (evfd, &counter, sizeof (uint64_t)); 1473 read (evfd, &counter, sizeof (uint64_t));
988 } 1474 }
989 else 1475 else
990#endif 1476#endif
991 write (evpipe [1], &old_errno, 1); 1477 {
992
993 errno = old_errno;
994 }
995}
996
997static void
998pipecb (EV_P_ ev_io *iow, int revents)
999{
1000#if EV_USE_EVENTFD
1001 if (evfd >= 0)
1002 {
1003 uint64_t counter;
1004 read (evfd, &counter, sizeof (uint64_t));
1005 }
1006 else
1007#endif
1008 {
1009 char dummy; 1478 char dummy;
1479 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1010 read (evpipe [0], &dummy, 1); 1480 read (evpipe [0], &dummy, 1);
1481 }
1482 }
1483
1484 pipe_write_skipped = 0;
1485
1486#if EV_SIGNAL_ENABLE
1487 if (sig_pending)
1011 } 1488 {
1489 sig_pending = 0;
1012 1490
1013 if (gotsig && ev_is_default_loop (EV_A)) 1491 for (i = EV_NSIG - 1; i--; )
1014 { 1492 if (expect_false (signals [i].pending))
1015 int signum;
1016 gotsig = 0;
1017
1018 for (signum = signalmax; signum--; )
1019 if (signals [signum].gotsig)
1020 ev_feed_signal_event (EV_A_ signum + 1); 1493 ev_feed_signal_event (EV_A_ i + 1);
1021 } 1494 }
1495#endif
1022 1496
1023#if EV_ASYNC_ENABLE 1497#if EV_ASYNC_ENABLE
1024 if (gotasync) 1498 if (async_pending)
1025 { 1499 {
1026 int i; 1500 async_pending = 0;
1027 gotasync = 0;
1028 1501
1029 for (i = asynccnt; i--; ) 1502 for (i = asynccnt; i--; )
1030 if (asyncs [i]->sent) 1503 if (asyncs [i]->sent)
1031 { 1504 {
1032 asyncs [i]->sent = 0; 1505 asyncs [i]->sent = 0;
… …
1036#endif 1509#endif
1037} 1510}
1038 1511
1039/*****************************************************************************/ 1512/*****************************************************************************/
1040 1513
1514void
1515ev_feed_signal (int signum)
1516{
1517#if EV_MULTIPLICITY
1518 EV_P = signals [signum - 1].loop;
1519
1520 if (!EV_A)
1521 return;
1522#endif
1523
1524 evpipe_init (EV_A);
1525
1526 signals [signum - 1].pending = 1;
1527 evpipe_write (EV_A_ &sig_pending);
1528}
1529
1041static void 1530static void
1042ev_sighandler (int signum) 1531ev_sighandler (int signum)
1043{ 1532{
1044#if EV_MULTIPLICITY
1045 struct ev_loop *loop = &default_loop_struct;
1046#endif
1047
1048#if _WIN32 1533#ifdef _WIN32
1049 signal (signum, ev_sighandler); 1534 signal (signum, ev_sighandler);
1050#endif 1535#endif
1051 1536
1052 signals [signum - 1].gotsig = 1; 1537 ev_feed_signal (signum);
1053 evpipe_write (EV_A_ &gotsig);
1054} 1538}
1055 1539
1056void noinline 1540void noinline
1057ev_feed_signal_event (EV_P_ int signum) 1541ev_feed_signal_event (EV_P_ int signum)
1058{ 1542{
1059 WL w; 1543 WL w;
1060 1544
1545 if (expect_false (signum <= 0 || signum > EV_NSIG))
1546 return;
1547
1548 --signum;
1549
1061#if EV_MULTIPLICITY 1550#if EV_MULTIPLICITY
1062 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1551 /* it is permissible to try to feed a signal to the wrong loop */
1063#endif 1552 /* or, likely more useful, feeding a signal nobody is waiting for */
1064 1553
1065 --signum; 1554 if (expect_false (signals [signum].loop != EV_A))
1066
1067 if (signum < 0 || signum >= signalmax)
1068 return; 1555 return;
1556#endif
1069 1557
1070 signals [signum].gotsig = 0; 1558 signals [signum].pending = 0;
1071 1559
1072 for (w = signals [signum].head; w; w = w->next) 1560 for (w = signals [signum].head; w; w = w->next)
1073 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1561 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1074} 1562}
1075 1563
1564#if EV_USE_SIGNALFD
1565static void
1566sigfdcb (EV_P_ ev_io *iow, int revents)
1567{
1568 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1569
1570 for (;;)
1571 {
1572 ssize_t res = read (sigfd, si, sizeof (si));
1573
1574 /* not ISO-C, as res might be -1, but works with SuS */
1575 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1576 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1577
1578 if (res < (ssize_t)sizeof (si))
1579 break;
1580 }
1581}
1582#endif
1583
1584#endif
1585
1076/*****************************************************************************/ 1586/*****************************************************************************/
1077 1587
1588#if EV_CHILD_ENABLE
1078static WL childs [EV_PID_HASHSIZE]; 1589static WL childs [EV_PID_HASHSIZE];
1079
1080#ifndef _WIN32
1081 1590
1082static ev_signal childev; 1591static ev_signal childev;
1083 1592
1084#ifndef WIFCONTINUED 1593#ifndef WIFCONTINUED
1085# define WIFCONTINUED(status) 0 1594# define WIFCONTINUED(status) 0
1086#endif 1595#endif
1087 1596
1088void inline_speed 1597/* handle a single child status event */
1598inline_speed void
1089child_reap (EV_P_ int chain, int pid, int status) 1599child_reap (EV_P_ int chain, int pid, int status)
1090{ 1600{
1091 ev_child *w; 1601 ev_child *w;
1092 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1602 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1093 1603
1094 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1604 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1095 { 1605 {
1096 if ((w->pid == pid || !w->pid) 1606 if ((w->pid == pid || !w->pid)
1097 && (!traced || (w->flags & 1))) 1607 && (!traced || (w->flags & 1)))
1098 { 1608 {
1099 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1609 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1106 1616
1107#ifndef WCONTINUED 1617#ifndef WCONTINUED
1108# define WCONTINUED 0 1618# define WCONTINUED 0
1109#endif 1619#endif
1110 1620
1621/* called on sigchld etc., calls waitpid */
1111static void 1622static void
1112childcb (EV_P_ ev_signal *sw, int revents) 1623childcb (EV_P_ ev_signal *sw, int revents)
1113{ 1624{
1114 int pid, status; 1625 int pid, status;
1115 1626
… …
1123 /* make sure we are called again until all children have been reaped */ 1634 /* make sure we are called again until all children have been reaped */
1124 /* we need to do it this way so that the callback gets called before we continue */ 1635 /* we need to do it this way so that the callback gets called before we continue */
1125 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1636 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1126 1637
1127 child_reap (EV_A_ pid, pid, status); 1638 child_reap (EV_A_ pid, pid, status);
1128 if (EV_PID_HASHSIZE > 1) 1639 if ((EV_PID_HASHSIZE) > 1)
1129 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1640 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1130} 1641}
1131 1642
1132#endif 1643#endif
1133 1644
1134/*****************************************************************************/ 1645/*****************************************************************************/
1135 1646
1647#if EV_USE_IOCP
1648# include "ev_iocp.c"
1649#endif
1136#if EV_USE_PORT 1650#if EV_USE_PORT
1137# include "ev_port.c" 1651# include "ev_port.c"
1138#endif 1652#endif
1139#if EV_USE_KQUEUE 1653#if EV_USE_KQUEUE
1140# include "ev_kqueue.c" 1654# include "ev_kqueue.c"
… …
1147#endif 1661#endif
1148#if EV_USE_SELECT 1662#if EV_USE_SELECT
1149# include "ev_select.c" 1663# include "ev_select.c"
1150#endif 1664#endif
1151 1665
1152int 1666int ecb_cold
1153ev_version_major (void) 1667ev_version_major (void)
1154{ 1668{
1155 return EV_VERSION_MAJOR; 1669 return EV_VERSION_MAJOR;
1156} 1670}
1157 1671
1158int 1672int ecb_cold
1159ev_version_minor (void) 1673ev_version_minor (void)
1160{ 1674{
1161 return EV_VERSION_MINOR; 1675 return EV_VERSION_MINOR;
1162} 1676}
1163 1677
1164/* return true if we are running with elevated privileges and should ignore env variables */ 1678/* return true if we are running with elevated privileges and should ignore env variables */
1165int inline_size 1679int inline_size ecb_cold
1166enable_secure (void) 1680enable_secure (void)
1167{ 1681{
1168#ifdef _WIN32 1682#ifdef _WIN32
1169 return 0; 1683 return 0;
1170#else 1684#else
1171 return getuid () != geteuid () 1685 return getuid () != geteuid ()
1172 || getgid () != getegid (); 1686 || getgid () != getegid ();
1173#endif 1687#endif
1174} 1688}
1175 1689
1176unsigned int 1690unsigned int ecb_cold
1177ev_supported_backends (void) 1691ev_supported_backends (void)
1178{ 1692{
1179 unsigned int flags = 0; 1693 unsigned int flags = 0;
1180 1694
1181 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 1695 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1185 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 1699 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1186 1700
1187 return flags; 1701 return flags;
1188} 1702}
1189 1703
1190unsigned int 1704unsigned int ecb_cold
1191ev_recommended_backends (void) 1705ev_recommended_backends (void)
1192{ 1706{
1193 unsigned int flags = ev_supported_backends (); 1707 unsigned int flags = ev_supported_backends ();
1194 1708
1195#ifndef __NetBSD__ 1709#ifndef __NetBSD__
1196 /* kqueue is borked on everything but netbsd apparently */ 1710 /* kqueue is borked on everything but netbsd apparently */
1197 /* it usually doesn't work correctly on anything but sockets and pipes */ 1711 /* it usually doesn't work correctly on anything but sockets and pipes */
1198 flags &= ~EVBACKEND_KQUEUE; 1712 flags &= ~EVBACKEND_KQUEUE;
1199#endif 1713#endif
1200#ifdef __APPLE__ 1714#ifdef __APPLE__
1201 // flags &= ~EVBACKEND_KQUEUE; for documentation 1715 /* only select works correctly on that "unix-certified" platform */
1202 flags &= ~EVBACKEND_POLL; 1716 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1717 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1718#endif
1719#ifdef __FreeBSD__
1720 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1203#endif 1721#endif
1204 1722
1205 return flags; 1723 return flags;
1206} 1724}
1207 1725
1208unsigned int 1726unsigned int ecb_cold
1209ev_embeddable_backends (void) 1727ev_embeddable_backends (void)
1210{ 1728{
1211 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1729 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1212 1730
1213 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 1731 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1214 /* please fix it and tell me how to detect the fix */ 1732 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1215 flags &= ~EVBACKEND_EPOLL; 1733 flags &= ~EVBACKEND_EPOLL;
1216 1734
1217 return flags; 1735 return flags;
1218} 1736}
1219 1737
1220unsigned int 1738unsigned int
1221ev_backend (EV_P) 1739ev_backend (EV_P)
1222{ 1740{
1223 return backend; 1741 return backend;
1224} 1742}
1225 1743
1744#if EV_FEATURE_API
1226unsigned int 1745unsigned int
1227ev_loop_count (EV_P) 1746ev_iteration (EV_P)
1228{ 1747{
1229 return loop_count; 1748 return loop_count;
1749}
1750
1751unsigned int
1752ev_depth (EV_P)
1753{
1754 return loop_depth;
1230} 1755}
1231 1756
1232void 1757void
1233ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1758ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1234{ 1759{
… …
1239ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1764ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1240{ 1765{
1241 timeout_blocktime = interval; 1766 timeout_blocktime = interval;
1242} 1767}
1243 1768
1769void
1770ev_set_userdata (EV_P_ void *data)
1771{
1772 userdata = data;
1773}
1774
1775void *
1776ev_userdata (EV_P)
1777{
1778 return userdata;
1779}
1780
1781void
1782ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1783{
1784 invoke_cb = invoke_pending_cb;
1785}
1786
1787void
1788ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1789{
1790 release_cb = release;
1791 acquire_cb = acquire;
1792}
1793#endif
1794
1795/* initialise a loop structure, must be zero-initialised */
1244static void noinline 1796static void noinline ecb_cold
1245loop_init (EV_P_ unsigned int flags) 1797loop_init (EV_P_ unsigned int flags)
1246{ 1798{
1247 if (!backend) 1799 if (!backend)
1248 { 1800 {
1801 origflags = flags;
1802
1803#if EV_USE_REALTIME
1804 if (!have_realtime)
1805 {
1806 struct timespec ts;
1807
1808 if (!clock_gettime (CLOCK_REALTIME, &ts))
1809 have_realtime = 1;
1810 }
1811#endif
1812
1249#if EV_USE_MONOTONIC 1813#if EV_USE_MONOTONIC
1814 if (!have_monotonic)
1250 { 1815 {
1251 struct timespec ts; 1816 struct timespec ts;
1817
1252 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1818 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1253 have_monotonic = 1; 1819 have_monotonic = 1;
1254 } 1820 }
1255#endif
1256
1257 ev_rt_now = ev_time ();
1258 mn_now = get_clock ();
1259 now_floor = mn_now;
1260 rtmn_diff = ev_rt_now - mn_now;
1261
1262 io_blocktime = 0.;
1263 timeout_blocktime = 0.;
1264 backend = 0;
1265 backend_fd = -1;
1266 gotasync = 0;
1267#if EV_USE_INOTIFY
1268 fs_fd = -2;
1269#endif 1821#endif
1270 1822
1271 /* pid check not overridable via env */ 1823 /* pid check not overridable via env */
1272#ifndef _WIN32 1824#ifndef _WIN32
1273 if (flags & EVFLAG_FORKCHECK) 1825 if (flags & EVFLAG_FORKCHECK)
… …
1277 if (!(flags & EVFLAG_NOENV) 1829 if (!(flags & EVFLAG_NOENV)
1278 && !enable_secure () 1830 && !enable_secure ()
1279 && getenv ("LIBEV_FLAGS")) 1831 && getenv ("LIBEV_FLAGS"))
1280 flags = atoi (getenv ("LIBEV_FLAGS")); 1832 flags = atoi (getenv ("LIBEV_FLAGS"));
1281 1833
1282 if (!(flags & 0x0000ffffU)) 1834 ev_rt_now = ev_time ();
1835 mn_now = get_clock ();
1836 now_floor = mn_now;
1837 rtmn_diff = ev_rt_now - mn_now;
1838#if EV_FEATURE_API
1839 invoke_cb = ev_invoke_pending;
1840#endif
1841
1842 io_blocktime = 0.;
1843 timeout_blocktime = 0.;
1844 backend = 0;
1845 backend_fd = -1;
1846 sig_pending = 0;
1847#if EV_ASYNC_ENABLE
1848 async_pending = 0;
1849#endif
1850 pipe_write_skipped = 0;
1851 pipe_write_wanted = 0;
1852#if EV_USE_INOTIFY
1853 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1854#endif
1855#if EV_USE_SIGNALFD
1856 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1857#endif
1858
1859 if (!(flags & EVBACKEND_MASK))
1283 flags |= ev_recommended_backends (); 1860 flags |= ev_recommended_backends ();
1284 1861
1862#if EV_USE_IOCP
1863 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1864#endif
1285#if EV_USE_PORT 1865#if EV_USE_PORT
1286 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1866 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1287#endif 1867#endif
1288#if EV_USE_KQUEUE 1868#if EV_USE_KQUEUE
1289 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1869 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1296#endif 1876#endif
1297#if EV_USE_SELECT 1877#if EV_USE_SELECT
1298 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1878 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1299#endif 1879#endif
1300 1880
1881 ev_prepare_init (&pending_w, pendingcb);
1882
1883#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1301 ev_init (&pipeev, pipecb); 1884 ev_init (&pipe_w, pipecb);
1302 ev_set_priority (&pipeev, EV_MAXPRI); 1885 ev_set_priority (&pipe_w, EV_MAXPRI);
1886#endif
1303 } 1887 }
1304} 1888}
1305 1889
1306static void noinline 1890/* free up a loop structure */
1891void ecb_cold
1307loop_destroy (EV_P) 1892ev_loop_destroy (EV_P)
1308{ 1893{
1309 int i; 1894 int i;
1310 1895
1896#if EV_MULTIPLICITY
1897 /* mimic free (0) */
1898 if (!EV_A)
1899 return;
1900#endif
1901
1902#if EV_CLEANUP_ENABLE
1903 /* queue cleanup watchers (and execute them) */
1904 if (expect_false (cleanupcnt))
1905 {
1906 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1907 EV_INVOKE_PENDING;
1908 }
1909#endif
1910
1911#if EV_CHILD_ENABLE
1912 if (ev_is_active (&childev))
1913 {
1914 ev_ref (EV_A); /* child watcher */
1915 ev_signal_stop (EV_A_ &childev);
1916 }
1917#endif
1918
1311 if (ev_is_active (&pipeev)) 1919 if (ev_is_active (&pipe_w))
1312 { 1920 {
1313 ev_ref (EV_A); /* signal watcher */ 1921 /*ev_ref (EV_A);*/
1314 ev_io_stop (EV_A_ &pipeev); 1922 /*ev_io_stop (EV_A_ &pipe_w);*/
1315 1923
1316#if EV_USE_EVENTFD 1924#if EV_USE_EVENTFD
1317 if (evfd >= 0) 1925 if (evfd >= 0)
1318 close (evfd); 1926 close (evfd);
1319#endif 1927#endif
1320 1928
1321 if (evpipe [0] >= 0) 1929 if (evpipe [0] >= 0)
1322 { 1930 {
1323 close (evpipe [0]); 1931 EV_WIN32_CLOSE_FD (evpipe [0]);
1324 close (evpipe [1]); 1932 EV_WIN32_CLOSE_FD (evpipe [1]);
1325 } 1933 }
1326 } 1934 }
1935
1936#if EV_USE_SIGNALFD
1937 if (ev_is_active (&sigfd_w))
1938 close (sigfd);
1939#endif
1327 1940
1328#if EV_USE_INOTIFY 1941#if EV_USE_INOTIFY
1329 if (fs_fd >= 0) 1942 if (fs_fd >= 0)
1330 close (fs_fd); 1943 close (fs_fd);
1331#endif 1944#endif
1332 1945
1333 if (backend_fd >= 0) 1946 if (backend_fd >= 0)
1334 close (backend_fd); 1947 close (backend_fd);
1335 1948
1949#if EV_USE_IOCP
1950 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1951#endif
1336#if EV_USE_PORT 1952#if EV_USE_PORT
1337 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1953 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1338#endif 1954#endif
1339#if EV_USE_KQUEUE 1955#if EV_USE_KQUEUE
1340 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 1956 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1355#if EV_IDLE_ENABLE 1971#if EV_IDLE_ENABLE
1356 array_free (idle, [i]); 1972 array_free (idle, [i]);
1357#endif 1973#endif
1358 } 1974 }
1359 1975
1360 ev_free (anfds); anfdmax = 0; 1976 ev_free (anfds); anfds = 0; anfdmax = 0;
1361 1977
1362 /* have to use the microsoft-never-gets-it-right macro */ 1978 /* have to use the microsoft-never-gets-it-right macro */
1979 array_free (rfeed, EMPTY);
1363 array_free (fdchange, EMPTY); 1980 array_free (fdchange, EMPTY);
1364 array_free (timer, EMPTY); 1981 array_free (timer, EMPTY);
1365#if EV_PERIODIC_ENABLE 1982#if EV_PERIODIC_ENABLE
1366 array_free (periodic, EMPTY); 1983 array_free (periodic, EMPTY);
1367#endif 1984#endif
1368#if EV_FORK_ENABLE 1985#if EV_FORK_ENABLE
1369 array_free (fork, EMPTY); 1986 array_free (fork, EMPTY);
1370#endif 1987#endif
1988#if EV_CLEANUP_ENABLE
1989 array_free (cleanup, EMPTY);
1990#endif
1371 array_free (prepare, EMPTY); 1991 array_free (prepare, EMPTY);
1372 array_free (check, EMPTY); 1992 array_free (check, EMPTY);
1373#if EV_ASYNC_ENABLE 1993#if EV_ASYNC_ENABLE
1374 array_free (async, EMPTY); 1994 array_free (async, EMPTY);
1375#endif 1995#endif
1376 1996
1377 backend = 0; 1997 backend = 0;
1998
1999#if EV_MULTIPLICITY
2000 if (ev_is_default_loop (EV_A))
2001#endif
2002 ev_default_loop_ptr = 0;
2003#if EV_MULTIPLICITY
2004 else
2005 ev_free (EV_A);
2006#endif
1378} 2007}
1379 2008
1380#if EV_USE_INOTIFY 2009#if EV_USE_INOTIFY
1381void inline_size infy_fork (EV_P); 2010inline_size void infy_fork (EV_P);
1382#endif 2011#endif
1383 2012
1384void inline_size 2013inline_size void
1385loop_fork (EV_P) 2014loop_fork (EV_P)
1386{ 2015{
1387#if EV_USE_PORT 2016#if EV_USE_PORT
1388 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 2017 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1389#endif 2018#endif
… …
1395#endif 2024#endif
1396#if EV_USE_INOTIFY 2025#if EV_USE_INOTIFY
1397 infy_fork (EV_A); 2026 infy_fork (EV_A);
1398#endif 2027#endif
1399 2028
1400 if (ev_is_active (&pipeev)) 2029 if (ev_is_active (&pipe_w))
1401 { 2030 {
1402 /* this "locks" the handlers against writing to the pipe */ 2031 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1403 /* while we modify the fd vars */
1404 gotsig = 1;
1405#if EV_ASYNC_ENABLE
1406 gotasync = 1;
1407#endif
1408 2032
1409 ev_ref (EV_A); 2033 ev_ref (EV_A);
1410 ev_io_stop (EV_A_ &pipeev); 2034 ev_io_stop (EV_A_ &pipe_w);
1411 2035
1412#if EV_USE_EVENTFD 2036#if EV_USE_EVENTFD
1413 if (evfd >= 0) 2037 if (evfd >= 0)
1414 close (evfd); 2038 close (evfd);
1415#endif 2039#endif
1416 2040
1417 if (evpipe [0] >= 0) 2041 if (evpipe [0] >= 0)
1418 { 2042 {
1419 close (evpipe [0]); 2043 EV_WIN32_CLOSE_FD (evpipe [0]);
1420 close (evpipe [1]); 2044 EV_WIN32_CLOSE_FD (evpipe [1]);
1421 } 2045 }
1422 2046
2047#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1423 evpipe_init (EV_A); 2048 evpipe_init (EV_A);
1424 /* now iterate over everything, in case we missed something */ 2049 /* now iterate over everything, in case we missed something */
1425 pipecb (EV_A_ &pipeev, EV_READ); 2050 pipecb (EV_A_ &pipe_w, EV_READ);
2051#endif
1426 } 2052 }
1427 2053
1428 postfork = 0; 2054 postfork = 0;
1429} 2055}
1430 2056
1431#if EV_MULTIPLICITY 2057#if EV_MULTIPLICITY
2058
1432struct ev_loop * 2059struct ev_loop * ecb_cold
1433ev_loop_new (unsigned int flags) 2060ev_loop_new (unsigned int flags)
1434{ 2061{
1435 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2062 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1436 2063
1437 memset (loop, 0, sizeof (struct ev_loop)); 2064 memset (EV_A, 0, sizeof (struct ev_loop));
1438
1439 loop_init (EV_A_ flags); 2065 loop_init (EV_A_ flags);
1440 2066
1441 if (ev_backend (EV_A)) 2067 if (ev_backend (EV_A))
1442 return loop; 2068 return EV_A;
1443 2069
2070 ev_free (EV_A);
1444 return 0; 2071 return 0;
1445} 2072}
1446 2073
1447void 2074#endif /* multiplicity */
1448ev_loop_destroy (EV_P)
1449{
1450 loop_destroy (EV_A);
1451 ev_free (loop);
1452}
1453 2075
1454void 2076#if EV_VERIFY
1455ev_loop_fork (EV_P) 2077static void noinline ecb_cold
2078verify_watcher (EV_P_ W w)
1456{ 2079{
1457 postfork = 1; /* must be in line with ev_default_fork */ 2080 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2081
2082 if (w->pending)
2083 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2084}
2085
2086static void noinline ecb_cold
2087verify_heap (EV_P_ ANHE *heap, int N)
2088{
2089 int i;
2090
2091 for (i = HEAP0; i < N + HEAP0; ++i)
2092 {
2093 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
2094 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
2095 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
2096
2097 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2098 }
2099}
2100
2101static void noinline ecb_cold
2102array_verify (EV_P_ W *ws, int cnt)
2103{
2104 while (cnt--)
2105 {
2106 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
2107 verify_watcher (EV_A_ ws [cnt]);
2108 }
2109}
2110#endif
2111
2112#if EV_FEATURE_API
2113void ecb_cold
2114ev_verify (EV_P)
2115{
2116#if EV_VERIFY
2117 int i;
2118 WL w;
2119
2120 assert (activecnt >= -1);
2121
2122 assert (fdchangemax >= fdchangecnt);
2123 for (i = 0; i < fdchangecnt; ++i)
2124 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2125
2126 assert (anfdmax >= 0);
2127 for (i = 0; i < anfdmax; ++i)
2128 for (w = anfds [i].head; w; w = w->next)
2129 {
2130 verify_watcher (EV_A_ (W)w);
2131 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2132 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2133 }
2134
2135 assert (timermax >= timercnt);
2136 verify_heap (EV_A_ timers, timercnt);
2137
2138#if EV_PERIODIC_ENABLE
2139 assert (periodicmax >= periodiccnt);
2140 verify_heap (EV_A_ periodics, periodiccnt);
2141#endif
2142
2143 for (i = NUMPRI; i--; )
2144 {
2145 assert (pendingmax [i] >= pendingcnt [i]);
2146#if EV_IDLE_ENABLE
2147 assert (idleall >= 0);
2148 assert (idlemax [i] >= idlecnt [i]);
2149 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
2150#endif
2151 }
2152
2153#if EV_FORK_ENABLE
2154 assert (forkmax >= forkcnt);
2155 array_verify (EV_A_ (W *)forks, forkcnt);
2156#endif
2157
2158#if EV_CLEANUP_ENABLE
2159 assert (cleanupmax >= cleanupcnt);
2160 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2161#endif
2162
2163#if EV_ASYNC_ENABLE
2164 assert (asyncmax >= asynccnt);
2165 array_verify (EV_A_ (W *)asyncs, asynccnt);
2166#endif
2167
2168#if EV_PREPARE_ENABLE
2169 assert (preparemax >= preparecnt);
2170 array_verify (EV_A_ (W *)prepares, preparecnt);
2171#endif
2172
2173#if EV_CHECK_ENABLE
2174 assert (checkmax >= checkcnt);
2175 array_verify (EV_A_ (W *)checks, checkcnt);
2176#endif
2177
2178# if 0
2179#if EV_CHILD_ENABLE
2180 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
2181 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2182#endif
2183# endif
2184#endif
1458} 2185}
1459#endif 2186#endif
1460 2187
1461#if EV_MULTIPLICITY 2188#if EV_MULTIPLICITY
1462struct ev_loop * 2189struct ev_loop * ecb_cold
1463ev_default_loop_init (unsigned int flags)
1464#else 2190#else
1465int 2191int
2192#endif
1466ev_default_loop (unsigned int flags) 2193ev_default_loop (unsigned int flags)
1467#endif
1468{ 2194{
1469 if (!ev_default_loop_ptr) 2195 if (!ev_default_loop_ptr)
1470 { 2196 {
1471#if EV_MULTIPLICITY 2197#if EV_MULTIPLICITY
1472 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2198 EV_P = ev_default_loop_ptr = &default_loop_struct;
1473#else 2199#else
1474 ev_default_loop_ptr = 1; 2200 ev_default_loop_ptr = 1;
1475#endif 2201#endif
1476 2202
1477 loop_init (EV_A_ flags); 2203 loop_init (EV_A_ flags);
1478 2204
1479 if (ev_backend (EV_A)) 2205 if (ev_backend (EV_A))
1480 { 2206 {
1481#ifndef _WIN32 2207#if EV_CHILD_ENABLE
1482 ev_signal_init (&childev, childcb, SIGCHLD); 2208 ev_signal_init (&childev, childcb, SIGCHLD);
1483 ev_set_priority (&childev, EV_MAXPRI); 2209 ev_set_priority (&childev, EV_MAXPRI);
1484 ev_signal_start (EV_A_ &childev); 2210 ev_signal_start (EV_A_ &childev);
1485 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2211 ev_unref (EV_A); /* child watcher should not keep loop alive */
1486#endif 2212#endif
… …
1491 2217
1492 return ev_default_loop_ptr; 2218 return ev_default_loop_ptr;
1493} 2219}
1494 2220
1495void 2221void
1496ev_default_destroy (void) 2222ev_loop_fork (EV_P)
1497{ 2223{
1498#if EV_MULTIPLICITY
1499 struct ev_loop *loop = ev_default_loop_ptr;
1500#endif
1501
1502#ifndef _WIN32
1503 ev_ref (EV_A); /* child watcher */
1504 ev_signal_stop (EV_A_ &childev);
1505#endif
1506
1507 loop_destroy (EV_A);
1508}
1509
1510void
1511ev_default_fork (void)
1512{
1513#if EV_MULTIPLICITY
1514 struct ev_loop *loop = ev_default_loop_ptr;
1515#endif
1516
1517 if (backend)
1518 postfork = 1; /* must be in line with ev_loop_fork */ 2224 postfork = 1; /* must be in line with ev_default_fork */
1519} 2225}
1520 2226
1521/*****************************************************************************/ 2227/*****************************************************************************/
1522 2228
1523void 2229void
1524ev_invoke (EV_P_ void *w, int revents) 2230ev_invoke (EV_P_ void *w, int revents)
1525{ 2231{
1526 EV_CB_INVOKE ((W)w, revents); 2232 EV_CB_INVOKE ((W)w, revents);
1527} 2233}
1528 2234
1529void inline_speed 2235unsigned int
1530call_pending (EV_P) 2236ev_pending_count (EV_P)
2237{
2238 int pri;
2239 unsigned int count = 0;
2240
2241 for (pri = NUMPRI; pri--; )
2242 count += pendingcnt [pri];
2243
2244 return count;
2245}
2246
2247void noinline
2248ev_invoke_pending (EV_P)
1531{ 2249{
1532 int pri; 2250 int pri;
1533 2251
1534 for (pri = NUMPRI; pri--; ) 2252 for (pri = NUMPRI; pri--; )
1535 while (pendingcnt [pri]) 2253 while (pendingcnt [pri])
1536 { 2254 {
1537 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2255 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1538 2256
1539 if (expect_true (p->w))
1540 {
1541 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1542
1543 p->w->pending = 0; 2257 p->w->pending = 0;
1544 EV_CB_INVOKE (p->w, p->events); 2258 EV_CB_INVOKE (p->w, p->events);
1545 } 2259 EV_FREQUENT_CHECK;
1546 } 2260 }
1547} 2261}
1548 2262
1549#if EV_IDLE_ENABLE 2263#if EV_IDLE_ENABLE
1550void inline_size 2264/* make idle watchers pending. this handles the "call-idle */
2265/* only when higher priorities are idle" logic */
2266inline_size void
1551idle_reify (EV_P) 2267idle_reify (EV_P)
1552{ 2268{
1553 if (expect_false (idleall)) 2269 if (expect_false (idleall))
1554 { 2270 {
1555 int pri; 2271 int pri;
… …
1567 } 2283 }
1568 } 2284 }
1569} 2285}
1570#endif 2286#endif
1571 2287
1572void inline_size 2288/* make timers pending */
2289inline_size void
1573timers_reify (EV_P) 2290timers_reify (EV_P)
1574{ 2291{
2292 EV_FREQUENT_CHECK;
2293
1575 while (timercnt && ev_at (timers [HEAP0]) <= mn_now) 2294 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1576 { 2295 {
1577 ev_timer *w = (ev_timer *)timers [HEAP0]; 2296 do
1578
1579 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1580
1581 /* first reschedule or stop timer */
1582 if (w->repeat)
1583 { 2297 {
2298 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2299
2300 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2301
2302 /* first reschedule or stop timer */
2303 if (w->repeat)
2304 {
2305 ev_at (w) += w->repeat;
2306 if (ev_at (w) < mn_now)
2307 ev_at (w) = mn_now;
2308
1584 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2309 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1585 2310
1586 ev_at (w) += w->repeat; 2311 ANHE_at_cache (timers [HEAP0]);
1587 if (ev_at (w) < mn_now)
1588 ev_at (w) = mn_now;
1589
1590 downheap (timers, timercnt, HEAP0); 2312 downheap (timers, timercnt, HEAP0);
2313 }
2314 else
2315 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2316
2317 EV_FREQUENT_CHECK;
2318 feed_reverse (EV_A_ (W)w);
1591 } 2319 }
1592 else 2320 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1593 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1594 2321
1595 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 2322 feed_reverse_done (EV_A_ EV_TIMER);
1596 } 2323 }
1597} 2324}
1598 2325
1599#if EV_PERIODIC_ENABLE 2326#if EV_PERIODIC_ENABLE
1600void inline_size 2327
2328static void noinline
2329periodic_recalc (EV_P_ ev_periodic *w)
2330{
2331 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2332 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2333
2334 /* the above almost always errs on the low side */
2335 while (at <= ev_rt_now)
2336 {
2337 ev_tstamp nat = at + w->interval;
2338
2339 /* when resolution fails us, we use ev_rt_now */
2340 if (expect_false (nat == at))
2341 {
2342 at = ev_rt_now;
2343 break;
2344 }
2345
2346 at = nat;
2347 }
2348
2349 ev_at (w) = at;
2350}
2351
2352/* make periodics pending */
2353inline_size void
1601periodics_reify (EV_P) 2354periodics_reify (EV_P)
1602{ 2355{
2356 EV_FREQUENT_CHECK;
2357
1603 while (periodiccnt && ev_at (periodics [HEAP0]) <= ev_rt_now) 2358 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1604 { 2359 {
1605 ev_periodic *w = (ev_periodic *)periodics [HEAP0]; 2360 int feed_count = 0;
1606 2361
1607 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2362 do
1608
1609 /* first reschedule or stop timer */
1610 if (w->reschedule_cb)
1611 { 2363 {
2364 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2365
2366 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2367
2368 /* first reschedule or stop timer */
2369 if (w->reschedule_cb)
2370 {
1612 ev_at (w) = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON); 2371 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2372
1613 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) > ev_rt_now)); 2373 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
2374
2375 ANHE_at_cache (periodics [HEAP0]);
1614 downheap (periodics, periodiccnt, 1); 2376 downheap (periodics, periodiccnt, HEAP0);
2377 }
2378 else if (w->interval)
2379 {
2380 periodic_recalc (EV_A_ w);
2381 ANHE_at_cache (periodics [HEAP0]);
2382 downheap (periodics, periodiccnt, HEAP0);
2383 }
2384 else
2385 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2386
2387 EV_FREQUENT_CHECK;
2388 feed_reverse (EV_A_ (W)w);
1615 } 2389 }
1616 else if (w->interval) 2390 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1617 {
1618 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1619 if (ev_at (w) - ev_rt_now <= TIME_EPSILON) ev_at (w) += w->interval;
1620 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ev_at (w) > ev_rt_now));
1621 downheap (periodics, periodiccnt, HEAP0);
1622 }
1623 else
1624 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1625 2391
1626 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2392 feed_reverse_done (EV_A_ EV_PERIODIC);
1627 } 2393 }
1628} 2394}
1629 2395
2396/* simply recalculate all periodics */
2397/* TODO: maybe ensure that at least one event happens when jumping forward? */
1630static void noinline 2398static void noinline ecb_cold
1631periodics_reschedule (EV_P) 2399periodics_reschedule (EV_P)
1632{ 2400{
1633 int i; 2401 int i;
1634 2402
1635 /* adjust periodics after time jump */ 2403 /* adjust periodics after time jump */
1636 for (i = 1; i <= periodiccnt; ++i) 2404 for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
1637 { 2405 {
1638 ev_periodic *w = (ev_periodic *)periodics [i]; 2406 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1639 2407
1640 if (w->reschedule_cb) 2408 if (w->reschedule_cb)
1641 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2409 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1642 else if (w->interval) 2410 else if (w->interval)
1643 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2411 periodic_recalc (EV_A_ w);
2412
2413 ANHE_at_cache (periodics [i]);
2414 }
2415
2416 reheap (periodics, periodiccnt);
2417}
2418#endif
2419
2420/* adjust all timers by a given offset */
2421static void noinline ecb_cold
2422timers_reschedule (EV_P_ ev_tstamp adjust)
2423{
2424 int i;
2425
2426 for (i = 0; i < timercnt; ++i)
1644 } 2427 {
1645 2428 ANHE *he = timers + i + HEAP0;
1646 /* now rebuild the heap */ 2429 ANHE_w (*he)->at += adjust;
1647 for (i = periodiccnt >> 1; --i; ) 2430 ANHE_at_cache (*he);
1648 downheap (periodics, periodiccnt, i + HEAP0); 2431 }
1649} 2432}
1650#endif
1651 2433
1652void inline_speed 2434/* fetch new monotonic and realtime times from the kernel */
2435/* also detect if there was a timejump, and act accordingly */
2436inline_speed void
1653time_update (EV_P_ ev_tstamp max_block) 2437time_update (EV_P_ ev_tstamp max_block)
1654{ 2438{
1655 int i;
1656
1657#if EV_USE_MONOTONIC 2439#if EV_USE_MONOTONIC
1658 if (expect_true (have_monotonic)) 2440 if (expect_true (have_monotonic))
1659 { 2441 {
2442 int i;
1660 ev_tstamp odiff = rtmn_diff; 2443 ev_tstamp odiff = rtmn_diff;
1661 2444
1662 mn_now = get_clock (); 2445 mn_now = get_clock ();
1663 2446
1664 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2447 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1680 * doesn't hurt either as we only do this on time-jumps or 2463 * doesn't hurt either as we only do this on time-jumps or
1681 * in the unlikely event of having been preempted here. 2464 * in the unlikely event of having been preempted here.
1682 */ 2465 */
1683 for (i = 4; --i; ) 2466 for (i = 4; --i; )
1684 { 2467 {
2468 ev_tstamp diff;
1685 rtmn_diff = ev_rt_now - mn_now; 2469 rtmn_diff = ev_rt_now - mn_now;
1686 2470
2471 diff = odiff - rtmn_diff;
2472
1687 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2473 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1688 return; /* all is well */ 2474 return; /* all is well */
1689 2475
1690 ev_rt_now = ev_time (); 2476 ev_rt_now = ev_time ();
1691 mn_now = get_clock (); 2477 mn_now = get_clock ();
1692 now_floor = mn_now; 2478 now_floor = mn_now;
1693 } 2479 }
1694 2480
2481 /* no timer adjustment, as the monotonic clock doesn't jump */
2482 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1695# if EV_PERIODIC_ENABLE 2483# if EV_PERIODIC_ENABLE
1696 periodics_reschedule (EV_A); 2484 periodics_reschedule (EV_A);
1697# endif 2485# endif
1698 /* no timer adjustment, as the monotonic clock doesn't jump */
1699 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1700 } 2486 }
1701 else 2487 else
1702#endif 2488#endif
1703 { 2489 {
1704 ev_rt_now = ev_time (); 2490 ev_rt_now = ev_time ();
1705 2491
1706 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2492 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1707 { 2493 {
2494 /* adjust timers. this is easy, as the offset is the same for all of them */
2495 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1708#if EV_PERIODIC_ENABLE 2496#if EV_PERIODIC_ENABLE
1709 periodics_reschedule (EV_A); 2497 periodics_reschedule (EV_A);
1710#endif 2498#endif
1711 /* adjust timers. this is easy, as the offset is the same for all of them */
1712 for (i = 1; i <= timercnt; ++i)
1713 ev_at (timers [i]) += ev_rt_now - mn_now;
1714 } 2499 }
1715 2500
1716 mn_now = ev_rt_now; 2501 mn_now = ev_rt_now;
1717 } 2502 }
1718} 2503}
1719 2504
1720void 2505void
1721ev_ref (EV_P)
1722{
1723 ++activecnt;
1724}
1725
1726void
1727ev_unref (EV_P)
1728{
1729 --activecnt;
1730}
1731
1732static int loop_done;
1733
1734void
1735ev_loop (EV_P_ int flags) 2506ev_run (EV_P_ int flags)
1736{ 2507{
2508#if EV_FEATURE_API
2509 ++loop_depth;
2510#endif
2511
2512 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2513
1737 loop_done = EVUNLOOP_CANCEL; 2514 loop_done = EVBREAK_CANCEL;
1738 2515
1739 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2516 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1740 2517
1741 do 2518 do
1742 { 2519 {
2520#if EV_VERIFY >= 2
2521 ev_verify (EV_A);
2522#endif
2523
1743#ifndef _WIN32 2524#ifndef _WIN32
1744 if (expect_false (curpid)) /* penalise the forking check even more */ 2525 if (expect_false (curpid)) /* penalise the forking check even more */
1745 if (expect_false (getpid () != curpid)) 2526 if (expect_false (getpid () != curpid))
1746 { 2527 {
1747 curpid = getpid (); 2528 curpid = getpid ();
… …
1753 /* we might have forked, so queue fork handlers */ 2534 /* we might have forked, so queue fork handlers */
1754 if (expect_false (postfork)) 2535 if (expect_false (postfork))
1755 if (forkcnt) 2536 if (forkcnt)
1756 { 2537 {
1757 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2538 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1758 call_pending (EV_A); 2539 EV_INVOKE_PENDING;
1759 } 2540 }
1760#endif 2541#endif
1761 2542
2543#if EV_PREPARE_ENABLE
1762 /* queue prepare watchers (and execute them) */ 2544 /* queue prepare watchers (and execute them) */
1763 if (expect_false (preparecnt)) 2545 if (expect_false (preparecnt))
1764 { 2546 {
1765 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2547 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1766 call_pending (EV_A); 2548 EV_INVOKE_PENDING;
1767 } 2549 }
2550#endif
1768 2551
1769 if (expect_false (!activecnt)) 2552 if (expect_false (loop_done))
1770 break; 2553 break;
1771 2554
1772 /* we might have forked, so reify kernel state if necessary */ 2555 /* we might have forked, so reify kernel state if necessary */
1773 if (expect_false (postfork)) 2556 if (expect_false (postfork))
1774 loop_fork (EV_A); 2557 loop_fork (EV_A);
… …
1779 /* calculate blocking time */ 2562 /* calculate blocking time */
1780 { 2563 {
1781 ev_tstamp waittime = 0.; 2564 ev_tstamp waittime = 0.;
1782 ev_tstamp sleeptime = 0.; 2565 ev_tstamp sleeptime = 0.;
1783 2566
2567 /* remember old timestamp for io_blocktime calculation */
2568 ev_tstamp prev_mn_now = mn_now;
2569
2570 /* update time to cancel out callback processing overhead */
2571 time_update (EV_A_ 1e100);
2572
2573 /* from now on, we want a pipe-wake-up */
2574 pipe_write_wanted = 1;
2575
1784 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2576 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
1785 { 2577 {
1786 /* update time to cancel out callback processing overhead */
1787 time_update (EV_A_ 1e100);
1788
1789 waittime = MAX_BLOCKTIME; 2578 waittime = MAX_BLOCKTIME;
1790 2579
1791 if (timercnt) 2580 if (timercnt)
1792 { 2581 {
1793 ev_tstamp to = ev_at (timers [HEAP0]) - mn_now + backend_fudge; 2582 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
1794 if (waittime > to) waittime = to; 2583 if (waittime > to) waittime = to;
1795 } 2584 }
1796 2585
1797#if EV_PERIODIC_ENABLE 2586#if EV_PERIODIC_ENABLE
1798 if (periodiccnt) 2587 if (periodiccnt)
1799 { 2588 {
1800 ev_tstamp to = ev_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2589 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
1801 if (waittime > to) waittime = to; 2590 if (waittime > to) waittime = to;
1802 } 2591 }
1803#endif 2592#endif
1804 2593
2594 /* don't let timeouts decrease the waittime below timeout_blocktime */
1805 if (expect_false (waittime < timeout_blocktime)) 2595 if (expect_false (waittime < timeout_blocktime))
1806 waittime = timeout_blocktime; 2596 waittime = timeout_blocktime;
1807 2597
1808 sleeptime = waittime - backend_fudge; 2598 /* at this point, we NEED to wait, so we have to ensure */
2599 /* to pass a minimum nonzero value to the backend */
2600 if (expect_false (waittime < backend_mintime))
2601 waittime = backend_mintime;
1809 2602
2603 /* extra check because io_blocktime is commonly 0 */
1810 if (expect_true (sleeptime > io_blocktime)) 2604 if (expect_false (io_blocktime))
1811 sleeptime = io_blocktime;
1812
1813 if (sleeptime)
1814 { 2605 {
2606 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2607
2608 if (sleeptime > waittime - backend_mintime)
2609 sleeptime = waittime - backend_mintime;
2610
2611 if (expect_true (sleeptime > 0.))
2612 {
1815 ev_sleep (sleeptime); 2613 ev_sleep (sleeptime);
1816 waittime -= sleeptime; 2614 waittime -= sleeptime;
2615 }
1817 } 2616 }
1818 } 2617 }
1819 2618
2619#if EV_FEATURE_API
1820 ++loop_count; 2620 ++loop_count;
2621#endif
2622 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
1821 backend_poll (EV_A_ waittime); 2623 backend_poll (EV_A_ waittime);
2624 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2625
2626 pipe_write_wanted = 0;
2627
2628 if (pipe_write_skipped)
2629 {
2630 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
2631 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2632 }
2633
1822 2634
1823 /* update ev_rt_now, do magic */ 2635 /* update ev_rt_now, do magic */
1824 time_update (EV_A_ waittime + sleeptime); 2636 time_update (EV_A_ waittime + sleeptime);
1825 } 2637 }
1826 2638
… …
1833#if EV_IDLE_ENABLE 2645#if EV_IDLE_ENABLE
1834 /* queue idle watchers unless other events are pending */ 2646 /* queue idle watchers unless other events are pending */
1835 idle_reify (EV_A); 2647 idle_reify (EV_A);
1836#endif 2648#endif
1837 2649
2650#if EV_CHECK_ENABLE
1838 /* queue check watchers, to be executed first */ 2651 /* queue check watchers, to be executed first */
1839 if (expect_false (checkcnt)) 2652 if (expect_false (checkcnt))
1840 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2653 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2654#endif
1841 2655
1842 call_pending (EV_A); 2656 EV_INVOKE_PENDING;
1843 } 2657 }
1844 while (expect_true ( 2658 while (expect_true (
1845 activecnt 2659 activecnt
1846 && !loop_done 2660 && !loop_done
1847 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2661 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
1848 )); 2662 ));
1849 2663
1850 if (loop_done == EVUNLOOP_ONE) 2664 if (loop_done == EVBREAK_ONE)
1851 loop_done = EVUNLOOP_CANCEL; 2665 loop_done = EVBREAK_CANCEL;
2666
2667#if EV_FEATURE_API
2668 --loop_depth;
2669#endif
1852} 2670}
1853 2671
1854void 2672void
1855ev_unloop (EV_P_ int how) 2673ev_break (EV_P_ int how)
1856{ 2674{
1857 loop_done = how; 2675 loop_done = how;
1858} 2676}
1859 2677
2678void
2679ev_ref (EV_P)
2680{
2681 ++activecnt;
2682}
2683
2684void
2685ev_unref (EV_P)
2686{
2687 --activecnt;
2688}
2689
2690void
2691ev_now_update (EV_P)
2692{
2693 time_update (EV_A_ 1e100);
2694}
2695
2696void
2697ev_suspend (EV_P)
2698{
2699 ev_now_update (EV_A);
2700}
2701
2702void
2703ev_resume (EV_P)
2704{
2705 ev_tstamp mn_prev = mn_now;
2706
2707 ev_now_update (EV_A);
2708 timers_reschedule (EV_A_ mn_now - mn_prev);
2709#if EV_PERIODIC_ENABLE
2710 /* TODO: really do this? */
2711 periodics_reschedule (EV_A);
2712#endif
2713}
2714
1860/*****************************************************************************/ 2715/*****************************************************************************/
2716/* singly-linked list management, used when the expected list length is short */
1861 2717
1862void inline_size 2718inline_size void
1863wlist_add (WL *head, WL elem) 2719wlist_add (WL *head, WL elem)
1864{ 2720{
1865 elem->next = *head; 2721 elem->next = *head;
1866 *head = elem; 2722 *head = elem;
1867} 2723}
1868 2724
1869void inline_size 2725inline_size void
1870wlist_del (WL *head, WL elem) 2726wlist_del (WL *head, WL elem)
1871{ 2727{
1872 while (*head) 2728 while (*head)
1873 { 2729 {
1874 if (*head == elem) 2730 if (expect_true (*head == elem))
1875 { 2731 {
1876 *head = elem->next; 2732 *head = elem->next;
1877 return; 2733 break;
1878 } 2734 }
1879 2735
1880 head = &(*head)->next; 2736 head = &(*head)->next;
1881 } 2737 }
1882} 2738}
1883 2739
1884void inline_speed 2740/* internal, faster, version of ev_clear_pending */
2741inline_speed void
1885clear_pending (EV_P_ W w) 2742clear_pending (EV_P_ W w)
1886{ 2743{
1887 if (w->pending) 2744 if (w->pending)
1888 { 2745 {
1889 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2746 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1890 w->pending = 0; 2747 w->pending = 0;
1891 } 2748 }
1892} 2749}
1893 2750
1894int 2751int
… …
1898 int pending = w_->pending; 2755 int pending = w_->pending;
1899 2756
1900 if (expect_true (pending)) 2757 if (expect_true (pending))
1901 { 2758 {
1902 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2759 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2760 p->w = (W)&pending_w;
1903 w_->pending = 0; 2761 w_->pending = 0;
1904 p->w = 0;
1905 return p->events; 2762 return p->events;
1906 } 2763 }
1907 else 2764 else
1908 return 0; 2765 return 0;
1909} 2766}
1910 2767
1911void inline_size 2768inline_size void
1912pri_adjust (EV_P_ W w) 2769pri_adjust (EV_P_ W w)
1913{ 2770{
1914 int pri = w->priority; 2771 int pri = ev_priority (w);
1915 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2772 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1916 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2773 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1917 w->priority = pri; 2774 ev_set_priority (w, pri);
1918} 2775}
1919 2776
1920void inline_speed 2777inline_speed void
1921ev_start (EV_P_ W w, int active) 2778ev_start (EV_P_ W w, int active)
1922{ 2779{
1923 pri_adjust (EV_A_ w); 2780 pri_adjust (EV_A_ w);
1924 w->active = active; 2781 w->active = active;
1925 ev_ref (EV_A); 2782 ev_ref (EV_A);
1926} 2783}
1927 2784
1928void inline_size 2785inline_size void
1929ev_stop (EV_P_ W w) 2786ev_stop (EV_P_ W w)
1930{ 2787{
1931 ev_unref (EV_A); 2788 ev_unref (EV_A);
1932 w->active = 0; 2789 w->active = 0;
1933} 2790}
… …
1940 int fd = w->fd; 2797 int fd = w->fd;
1941 2798
1942 if (expect_false (ev_is_active (w))) 2799 if (expect_false (ev_is_active (w)))
1943 return; 2800 return;
1944 2801
1945 assert (("ev_io_start called with negative fd", fd >= 0)); 2802 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2803 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2804
2805 EV_FREQUENT_CHECK;
1946 2806
1947 ev_start (EV_A_ (W)w, 1); 2807 ev_start (EV_A_ (W)w, 1);
1948 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2808 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1949 wlist_add (&anfds[fd].head, (WL)w); 2809 wlist_add (&anfds[fd].head, (WL)w);
1950 2810
1951 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2811 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
1952 w->events &= ~EV_IOFDSET; 2812 w->events &= ~EV__IOFDSET;
2813
2814 EV_FREQUENT_CHECK;
1953} 2815}
1954 2816
1955void noinline 2817void noinline
1956ev_io_stop (EV_P_ ev_io *w) 2818ev_io_stop (EV_P_ ev_io *w)
1957{ 2819{
1958 clear_pending (EV_A_ (W)w); 2820 clear_pending (EV_A_ (W)w);
1959 if (expect_false (!ev_is_active (w))) 2821 if (expect_false (!ev_is_active (w)))
1960 return; 2822 return;
1961 2823
1962 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2824 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2825
2826 EV_FREQUENT_CHECK;
1963 2827
1964 wlist_del (&anfds[w->fd].head, (WL)w); 2828 wlist_del (&anfds[w->fd].head, (WL)w);
1965 ev_stop (EV_A_ (W)w); 2829 ev_stop (EV_A_ (W)w);
1966 2830
1967 fd_change (EV_A_ w->fd, 1); 2831 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2832
2833 EV_FREQUENT_CHECK;
1968} 2834}
1969 2835
1970void noinline 2836void noinline
1971ev_timer_start (EV_P_ ev_timer *w) 2837ev_timer_start (EV_P_ ev_timer *w)
1972{ 2838{
1973 if (expect_false (ev_is_active (w))) 2839 if (expect_false (ev_is_active (w)))
1974 return; 2840 return;
1975 2841
1976 ev_at (w) += mn_now; 2842 ev_at (w) += mn_now;
1977 2843
1978 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2844 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1979 2845
2846 EV_FREQUENT_CHECK;
2847
2848 ++timercnt;
1980 ev_start (EV_A_ (W)w, ++timercnt + HEAP0 - 1); 2849 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1981 array_needsize (WT, timers, timermax, timercnt + HEAP0, EMPTY2); 2850 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1982 timers [ev_active (w)] = (WT)w; 2851 ANHE_w (timers [ev_active (w)]) = (WT)w;
2852 ANHE_at_cache (timers [ev_active (w)]);
1983 upheap (timers, ev_active (w)); 2853 upheap (timers, ev_active (w));
1984 2854
2855 EV_FREQUENT_CHECK;
2856
1985 /*assert (("internal timer heap corruption", timers [ev_active (w)] == w));*/ 2857 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1986} 2858}
1987 2859
1988void noinline 2860void noinline
1989ev_timer_stop (EV_P_ ev_timer *w) 2861ev_timer_stop (EV_P_ ev_timer *w)
1990{ 2862{
1991 clear_pending (EV_A_ (W)w); 2863 clear_pending (EV_A_ (W)w);
1992 if (expect_false (!ev_is_active (w))) 2864 if (expect_false (!ev_is_active (w)))
1993 return; 2865 return;
1994 2866
2867 EV_FREQUENT_CHECK;
2868
1995 { 2869 {
1996 int active = ev_active (w); 2870 int active = ev_active (w);
1997 2871
1998 assert (("internal timer heap corruption", timers [active] == (WT)w)); 2872 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
1999 2873
2874 --timercnt;
2875
2000 if (expect_true (active < timercnt + HEAP0 - 1)) 2876 if (expect_true (active < timercnt + HEAP0))
2001 { 2877 {
2002 timers [active] = timers [timercnt + HEAP0 - 1]; 2878 timers [active] = timers [timercnt + HEAP0];
2003 adjustheap (timers, timercnt, active); 2879 adjustheap (timers, timercnt, active);
2004 } 2880 }
2005
2006 --timercnt;
2007 } 2881 }
2008 2882
2009 ev_at (w) -= mn_now; 2883 ev_at (w) -= mn_now;
2010 2884
2011 ev_stop (EV_A_ (W)w); 2885 ev_stop (EV_A_ (W)w);
2886
2887 EV_FREQUENT_CHECK;
2012} 2888}
2013 2889
2014void noinline 2890void noinline
2015ev_timer_again (EV_P_ ev_timer *w) 2891ev_timer_again (EV_P_ ev_timer *w)
2016{ 2892{
2893 EV_FREQUENT_CHECK;
2894
2017 if (ev_is_active (w)) 2895 if (ev_is_active (w))
2018 { 2896 {
2019 if (w->repeat) 2897 if (w->repeat)
2020 { 2898 {
2021 ev_at (w) = mn_now + w->repeat; 2899 ev_at (w) = mn_now + w->repeat;
2900 ANHE_at_cache (timers [ev_active (w)]);
2022 adjustheap (timers, timercnt, ev_active (w)); 2901 adjustheap (timers, timercnt, ev_active (w));
2023 } 2902 }
2024 else 2903 else
2025 ev_timer_stop (EV_A_ w); 2904 ev_timer_stop (EV_A_ w);
2026 } 2905 }
2027 else if (w->repeat) 2906 else if (w->repeat)
2028 { 2907 {
2029 ev_at (w) = w->repeat; 2908 ev_at (w) = w->repeat;
2030 ev_timer_start (EV_A_ w); 2909 ev_timer_start (EV_A_ w);
2031 } 2910 }
2911
2912 EV_FREQUENT_CHECK;
2913}
2914
2915ev_tstamp
2916ev_timer_remaining (EV_P_ ev_timer *w)
2917{
2918 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2032} 2919}
2033 2920
2034#if EV_PERIODIC_ENABLE 2921#if EV_PERIODIC_ENABLE
2035void noinline 2922void noinline
2036ev_periodic_start (EV_P_ ev_periodic *w) 2923ev_periodic_start (EV_P_ ev_periodic *w)
… …
2040 2927
2041 if (w->reschedule_cb) 2928 if (w->reschedule_cb)
2042 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2929 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2043 else if (w->interval) 2930 else if (w->interval)
2044 { 2931 {
2045 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2932 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2046 /* this formula differs from the one in periodic_reify because we do not always round up */ 2933 periodic_recalc (EV_A_ w);
2047 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2048 } 2934 }
2049 else 2935 else
2050 ev_at (w) = w->offset; 2936 ev_at (w) = w->offset;
2051 2937
2938 EV_FREQUENT_CHECK;
2939
2940 ++periodiccnt;
2052 ev_start (EV_A_ (W)w, ++periodiccnt + HEAP0 - 1); 2941 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2053 array_needsize (WT, periodics, periodicmax, periodiccnt + HEAP0, EMPTY2); 2942 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
2054 periodics [ev_active (w)] = (WT)w; 2943 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2944 ANHE_at_cache (periodics [ev_active (w)]);
2055 upheap (periodics, ev_active (w)); 2945 upheap (periodics, ev_active (w));
2056 2946
2947 EV_FREQUENT_CHECK;
2948
2057 /*assert (("internal periodic heap corruption", periodics [ev_active (w)] == w));*/ 2949 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2058} 2950}
2059 2951
2060void noinline 2952void noinline
2061ev_periodic_stop (EV_P_ ev_periodic *w) 2953ev_periodic_stop (EV_P_ ev_periodic *w)
2062{ 2954{
2063 clear_pending (EV_A_ (W)w); 2955 clear_pending (EV_A_ (W)w);
2064 if (expect_false (!ev_is_active (w))) 2956 if (expect_false (!ev_is_active (w)))
2065 return; 2957 return;
2066 2958
2959 EV_FREQUENT_CHECK;
2960
2067 { 2961 {
2068 int active = ev_active (w); 2962 int active = ev_active (w);
2069 2963
2070 assert (("internal periodic heap corruption", periodics [active] == (WT)w)); 2964 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2071 2965
2966 --periodiccnt;
2967
2072 if (expect_true (active < periodiccnt + HEAP0 - 1)) 2968 if (expect_true (active < periodiccnt + HEAP0))
2073 { 2969 {
2074 periodics [active] = periodics [periodiccnt + HEAP0 - 1]; 2970 periodics [active] = periodics [periodiccnt + HEAP0];
2075 adjustheap (periodics, periodiccnt, active); 2971 adjustheap (periodics, periodiccnt, active);
2076 } 2972 }
2077
2078 --periodiccnt;
2079 } 2973 }
2080 2974
2081 ev_stop (EV_A_ (W)w); 2975 ev_stop (EV_A_ (W)w);
2976
2977 EV_FREQUENT_CHECK;
2082} 2978}
2083 2979
2084void noinline 2980void noinline
2085ev_periodic_again (EV_P_ ev_periodic *w) 2981ev_periodic_again (EV_P_ ev_periodic *w)
2086{ 2982{
… …
2092 2988
2093#ifndef SA_RESTART 2989#ifndef SA_RESTART
2094# define SA_RESTART 0 2990# define SA_RESTART 0
2095#endif 2991#endif
2096 2992
2993#if EV_SIGNAL_ENABLE
2994
2097void noinline 2995void noinline
2098ev_signal_start (EV_P_ ev_signal *w) 2996ev_signal_start (EV_P_ ev_signal *w)
2099{ 2997{
2100#if EV_MULTIPLICITY
2101 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2102#endif
2103 if (expect_false (ev_is_active (w))) 2998 if (expect_false (ev_is_active (w)))
2104 return; 2999 return;
2105 3000
2106 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 3001 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2107 3002
2108 evpipe_init (EV_A); 3003#if EV_MULTIPLICITY
3004 assert (("libev: a signal must not be attached to two different loops",
3005 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2109 3006
3007 signals [w->signum - 1].loop = EV_A;
3008#endif
3009
3010 EV_FREQUENT_CHECK;
3011
3012#if EV_USE_SIGNALFD
3013 if (sigfd == -2)
2110 { 3014 {
2111#ifndef _WIN32 3015 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2112 sigset_t full, prev; 3016 if (sigfd < 0 && errno == EINVAL)
2113 sigfillset (&full); 3017 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2114 sigprocmask (SIG_SETMASK, &full, &prev);
2115#endif
2116 3018
2117 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 3019 if (sigfd >= 0)
3020 {
3021 fd_intern (sigfd); /* doing it twice will not hurt */
2118 3022
2119#ifndef _WIN32 3023 sigemptyset (&sigfd_set);
2120 sigprocmask (SIG_SETMASK, &prev, 0); 3024
2121#endif 3025 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3026 ev_set_priority (&sigfd_w, EV_MAXPRI);
3027 ev_io_start (EV_A_ &sigfd_w);
3028 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3029 }
2122 } 3030 }
3031
3032 if (sigfd >= 0)
3033 {
3034 /* TODO: check .head */
3035 sigaddset (&sigfd_set, w->signum);
3036 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3037
3038 signalfd (sigfd, &sigfd_set, 0);
3039 }
3040#endif
2123 3041
2124 ev_start (EV_A_ (W)w, 1); 3042 ev_start (EV_A_ (W)w, 1);
2125 wlist_add (&signals [w->signum - 1].head, (WL)w); 3043 wlist_add (&signals [w->signum - 1].head, (WL)w);
2126 3044
2127 if (!((WL)w)->next) 3045 if (!((WL)w)->next)
3046# if EV_USE_SIGNALFD
3047 if (sigfd < 0) /*TODO*/
3048# endif
2128 { 3049 {
2129#if _WIN32 3050# ifdef _WIN32
3051 evpipe_init (EV_A);
3052
2130 signal (w->signum, ev_sighandler); 3053 signal (w->signum, ev_sighandler);
2131#else 3054# else
2132 struct sigaction sa; 3055 struct sigaction sa;
3056
3057 evpipe_init (EV_A);
3058
2133 sa.sa_handler = ev_sighandler; 3059 sa.sa_handler = ev_sighandler;
2134 sigfillset (&sa.sa_mask); 3060 sigfillset (&sa.sa_mask);
2135 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3061 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2136 sigaction (w->signum, &sa, 0); 3062 sigaction (w->signum, &sa, 0);
3063
3064 if (origflags & EVFLAG_NOSIGMASK)
3065 {
3066 sigemptyset (&sa.sa_mask);
3067 sigaddset (&sa.sa_mask, w->signum);
3068 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3069 }
2137#endif 3070#endif
2138 } 3071 }
3072
3073 EV_FREQUENT_CHECK;
2139} 3074}
2140 3075
2141void noinline 3076void noinline
2142ev_signal_stop (EV_P_ ev_signal *w) 3077ev_signal_stop (EV_P_ ev_signal *w)
2143{ 3078{
2144 clear_pending (EV_A_ (W)w); 3079 clear_pending (EV_A_ (W)w);
2145 if (expect_false (!ev_is_active (w))) 3080 if (expect_false (!ev_is_active (w)))
2146 return; 3081 return;
2147 3082
3083 EV_FREQUENT_CHECK;
3084
2148 wlist_del (&signals [w->signum - 1].head, (WL)w); 3085 wlist_del (&signals [w->signum - 1].head, (WL)w);
2149 ev_stop (EV_A_ (W)w); 3086 ev_stop (EV_A_ (W)w);
2150 3087
2151 if (!signals [w->signum - 1].head) 3088 if (!signals [w->signum - 1].head)
3089 {
3090#if EV_MULTIPLICITY
3091 signals [w->signum - 1].loop = 0; /* unattach from signal */
3092#endif
3093#if EV_USE_SIGNALFD
3094 if (sigfd >= 0)
3095 {
3096 sigset_t ss;
3097
3098 sigemptyset (&ss);
3099 sigaddset (&ss, w->signum);
3100 sigdelset (&sigfd_set, w->signum);
3101
3102 signalfd (sigfd, &sigfd_set, 0);
3103 sigprocmask (SIG_UNBLOCK, &ss, 0);
3104 }
3105 else
3106#endif
2152 signal (w->signum, SIG_DFL); 3107 signal (w->signum, SIG_DFL);
3108 }
3109
3110 EV_FREQUENT_CHECK;
2153} 3111}
3112
3113#endif
3114
3115#if EV_CHILD_ENABLE
2154 3116
2155void 3117void
2156ev_child_start (EV_P_ ev_child *w) 3118ev_child_start (EV_P_ ev_child *w)
2157{ 3119{
2158#if EV_MULTIPLICITY 3120#if EV_MULTIPLICITY
2159 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3121 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2160#endif 3122#endif
2161 if (expect_false (ev_is_active (w))) 3123 if (expect_false (ev_is_active (w)))
2162 return; 3124 return;
2163 3125
3126 EV_FREQUENT_CHECK;
3127
2164 ev_start (EV_A_ (W)w, 1); 3128 ev_start (EV_A_ (W)w, 1);
2165 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3129 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
3130
3131 EV_FREQUENT_CHECK;
2166} 3132}
2167 3133
2168void 3134void
2169ev_child_stop (EV_P_ ev_child *w) 3135ev_child_stop (EV_P_ ev_child *w)
2170{ 3136{
2171 clear_pending (EV_A_ (W)w); 3137 clear_pending (EV_A_ (W)w);
2172 if (expect_false (!ev_is_active (w))) 3138 if (expect_false (!ev_is_active (w)))
2173 return; 3139 return;
2174 3140
3141 EV_FREQUENT_CHECK;
3142
2175 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3143 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2176 ev_stop (EV_A_ (W)w); 3144 ev_stop (EV_A_ (W)w);
3145
3146 EV_FREQUENT_CHECK;
2177} 3147}
3148
3149#endif
2178 3150
2179#if EV_STAT_ENABLE 3151#if EV_STAT_ENABLE
2180 3152
2181# ifdef _WIN32 3153# ifdef _WIN32
2182# undef lstat 3154# undef lstat
2183# define lstat(a,b) _stati64 (a,b) 3155# define lstat(a,b) _stati64 (a,b)
2184# endif 3156# endif
2185 3157
2186#define DEF_STAT_INTERVAL 5.0074891 3158#define DEF_STAT_INTERVAL 5.0074891
3159#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2187#define MIN_STAT_INTERVAL 0.1074891 3160#define MIN_STAT_INTERVAL 0.1074891
2188 3161
2189static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3162static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2190 3163
2191#if EV_USE_INOTIFY 3164#if EV_USE_INOTIFY
2192# define EV_INOTIFY_BUFSIZE 8192 3165
3166/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3167# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2193 3168
2194static void noinline 3169static void noinline
2195infy_add (EV_P_ ev_stat *w) 3170infy_add (EV_P_ ev_stat *w)
2196{ 3171{
2197 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); 3172 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);
2198 3173
2199 if (w->wd < 0) 3174 if (w->wd >= 0)
3175 {
3176 struct statfs sfs;
3177
3178 /* now local changes will be tracked by inotify, but remote changes won't */
3179 /* unless the filesystem is known to be local, we therefore still poll */
3180 /* also do poll on <2.6.25, but with normal frequency */
3181
3182 if (!fs_2625)
3183 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3184 else if (!statfs (w->path, &sfs)
3185 && (sfs.f_type == 0x1373 /* devfs */
3186 || sfs.f_type == 0xEF53 /* ext2/3 */
3187 || sfs.f_type == 0x3153464a /* jfs */
3188 || sfs.f_type == 0x52654973 /* reiser3 */
3189 || sfs.f_type == 0x01021994 /* tempfs */
3190 || sfs.f_type == 0x58465342 /* xfs */))
3191 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3192 else
3193 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2200 { 3194 }
2201 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 3195 else
3196 {
3197 /* can't use inotify, continue to stat */
3198 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2202 3199
2203 /* monitor some parent directory for speedup hints */ 3200 /* if path is not there, monitor some parent directory for speedup hints */
2204 /* note that exceeding the hardcoded limit is not a correctness issue, */ 3201 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2205 /* but an efficiency issue only */ 3202 /* but an efficiency issue only */
2206 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3203 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2207 { 3204 {
2208 char path [4096]; 3205 char path [4096];
2209 strcpy (path, w->path); 3206 strcpy (path, w->path);
… …
2213 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 3210 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2214 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 3211 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2215 3212
2216 char *pend = strrchr (path, '/'); 3213 char *pend = strrchr (path, '/');
2217 3214
2218 if (!pend) 3215 if (!pend || pend == path)
2219 break; /* whoops, no '/', complain to your admin */ 3216 break;
2220 3217
2221 *pend = 0; 3218 *pend = 0;
2222 w->wd = inotify_add_watch (fs_fd, path, mask); 3219 w->wd = inotify_add_watch (fs_fd, path, mask);
2223 } 3220 }
2224 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3221 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2225 } 3222 }
2226 } 3223 }
2227 else
2228 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2229 3224
2230 if (w->wd >= 0) 3225 if (w->wd >= 0)
2231 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3226 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
3227
3228 /* now re-arm timer, if required */
3229 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3230 ev_timer_again (EV_A_ &w->timer);
3231 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2232} 3232}
2233 3233
2234static void noinline 3234static void noinline
2235infy_del (EV_P_ ev_stat *w) 3235infy_del (EV_P_ ev_stat *w)
2236{ 3236{
… …
2239 3239
2240 if (wd < 0) 3240 if (wd < 0)
2241 return; 3241 return;
2242 3242
2243 w->wd = -2; 3243 w->wd = -2;
2244 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3244 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2245 wlist_del (&fs_hash [slot].head, (WL)w); 3245 wlist_del (&fs_hash [slot].head, (WL)w);
2246 3246
2247 /* remove this watcher, if others are watching it, they will rearm */ 3247 /* remove this watcher, if others are watching it, they will rearm */
2248 inotify_rm_watch (fs_fd, wd); 3248 inotify_rm_watch (fs_fd, wd);
2249} 3249}
2250 3250
2251static void noinline 3251static void noinline
2252infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3252infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2253{ 3253{
2254 if (slot < 0) 3254 if (slot < 0)
2255 /* overflow, need to check for all hahs slots */ 3255 /* overflow, need to check for all hash slots */
2256 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3256 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2257 infy_wd (EV_A_ slot, wd, ev); 3257 infy_wd (EV_A_ slot, wd, ev);
2258 else 3258 else
2259 { 3259 {
2260 WL w_; 3260 WL w_;
2261 3261
2262 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3262 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2263 { 3263 {
2264 ev_stat *w = (ev_stat *)w_; 3264 ev_stat *w = (ev_stat *)w_;
2265 w_ = w_->next; /* lets us remove this watcher and all before it */ 3265 w_ = w_->next; /* lets us remove this watcher and all before it */
2266 3266
2267 if (w->wd == wd || wd == -1) 3267 if (w->wd == wd || wd == -1)
2268 { 3268 {
2269 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3269 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2270 { 3270 {
3271 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2271 w->wd = -1; 3272 w->wd = -1;
2272 infy_add (EV_A_ w); /* re-add, no matter what */ 3273 infy_add (EV_A_ w); /* re-add, no matter what */
2273 } 3274 }
2274 3275
2275 stat_timer_cb (EV_A_ &w->timer, 0); 3276 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2280 3281
2281static void 3282static void
2282infy_cb (EV_P_ ev_io *w, int revents) 3283infy_cb (EV_P_ ev_io *w, int revents)
2283{ 3284{
2284 char buf [EV_INOTIFY_BUFSIZE]; 3285 char buf [EV_INOTIFY_BUFSIZE];
2285 struct inotify_event *ev = (struct inotify_event *)buf;
2286 int ofs; 3286 int ofs;
2287 int len = read (fs_fd, buf, sizeof (buf)); 3287 int len = read (fs_fd, buf, sizeof (buf));
2288 3288
2289 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3289 for (ofs = 0; ofs < len; )
3290 {
3291 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2290 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3292 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3293 ofs += sizeof (struct inotify_event) + ev->len;
3294 }
2291} 3295}
2292 3296
2293void inline_size 3297inline_size void ecb_cold
3298ev_check_2625 (EV_P)
3299{
3300 /* kernels < 2.6.25 are borked
3301 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3302 */
3303 if (ev_linux_version () < 0x020619)
3304 return;
3305
3306 fs_2625 = 1;
3307}
3308
3309inline_size int
3310infy_newfd (void)
3311{
3312#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3313 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3314 if (fd >= 0)
3315 return fd;
3316#endif
3317 return inotify_init ();
3318}
3319
3320inline_size void
2294infy_init (EV_P) 3321infy_init (EV_P)
2295{ 3322{
2296 if (fs_fd != -2) 3323 if (fs_fd != -2)
2297 return; 3324 return;
2298 3325
3326 fs_fd = -1;
3327
3328 ev_check_2625 (EV_A);
3329
2299 fs_fd = inotify_init (); 3330 fs_fd = infy_newfd ();
2300 3331
2301 if (fs_fd >= 0) 3332 if (fs_fd >= 0)
2302 { 3333 {
3334 fd_intern (fs_fd);
2303 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3335 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2304 ev_set_priority (&fs_w, EV_MAXPRI); 3336 ev_set_priority (&fs_w, EV_MAXPRI);
2305 ev_io_start (EV_A_ &fs_w); 3337 ev_io_start (EV_A_ &fs_w);
3338 ev_unref (EV_A);
2306 } 3339 }
2307} 3340}
2308 3341
2309void inline_size 3342inline_size void
2310infy_fork (EV_P) 3343infy_fork (EV_P)
2311{ 3344{
2312 int slot; 3345 int slot;
2313 3346
2314 if (fs_fd < 0) 3347 if (fs_fd < 0)
2315 return; 3348 return;
2316 3349
3350 ev_ref (EV_A);
3351 ev_io_stop (EV_A_ &fs_w);
2317 close (fs_fd); 3352 close (fs_fd);
2318 fs_fd = inotify_init (); 3353 fs_fd = infy_newfd ();
2319 3354
3355 if (fs_fd >= 0)
3356 {
3357 fd_intern (fs_fd);
3358 ev_io_set (&fs_w, fs_fd, EV_READ);
3359 ev_io_start (EV_A_ &fs_w);
3360 ev_unref (EV_A);
3361 }
3362
2320 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3363 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2321 { 3364 {
2322 WL w_ = fs_hash [slot].head; 3365 WL w_ = fs_hash [slot].head;
2323 fs_hash [slot].head = 0; 3366 fs_hash [slot].head = 0;
2324 3367
2325 while (w_) 3368 while (w_)
… …
2330 w->wd = -1; 3373 w->wd = -1;
2331 3374
2332 if (fs_fd >= 0) 3375 if (fs_fd >= 0)
2333 infy_add (EV_A_ w); /* re-add, no matter what */ 3376 infy_add (EV_A_ w); /* re-add, no matter what */
2334 else 3377 else
3378 {
3379 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3380 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2335 ev_timer_start (EV_A_ &w->timer); 3381 ev_timer_again (EV_A_ &w->timer);
3382 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3383 }
2336 } 3384 }
2337
2338 } 3385 }
2339} 3386}
2340 3387
3388#endif
3389
3390#ifdef _WIN32
3391# define EV_LSTAT(p,b) _stati64 (p, b)
3392#else
3393# define EV_LSTAT(p,b) lstat (p, b)
2341#endif 3394#endif
2342 3395
2343void 3396void
2344ev_stat_stat (EV_P_ ev_stat *w) 3397ev_stat_stat (EV_P_ ev_stat *w)
2345{ 3398{
… …
2352static void noinline 3405static void noinline
2353stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3406stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2354{ 3407{
2355 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3408 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2356 3409
2357 /* we copy this here each the time so that */ 3410 ev_statdata prev = w->attr;
2358 /* prev has the old value when the callback gets invoked */
2359 w->prev = w->attr;
2360 ev_stat_stat (EV_A_ w); 3411 ev_stat_stat (EV_A_ w);
2361 3412
2362 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3413 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2363 if ( 3414 if (
2364 w->prev.st_dev != w->attr.st_dev 3415 prev.st_dev != w->attr.st_dev
2365 || w->prev.st_ino != w->attr.st_ino 3416 || prev.st_ino != w->attr.st_ino
2366 || w->prev.st_mode != w->attr.st_mode 3417 || prev.st_mode != w->attr.st_mode
2367 || w->prev.st_nlink != w->attr.st_nlink 3418 || prev.st_nlink != w->attr.st_nlink
2368 || w->prev.st_uid != w->attr.st_uid 3419 || prev.st_uid != w->attr.st_uid
2369 || w->prev.st_gid != w->attr.st_gid 3420 || prev.st_gid != w->attr.st_gid
2370 || w->prev.st_rdev != w->attr.st_rdev 3421 || prev.st_rdev != w->attr.st_rdev
2371 || w->prev.st_size != w->attr.st_size 3422 || prev.st_size != w->attr.st_size
2372 || w->prev.st_atime != w->attr.st_atime 3423 || prev.st_atime != w->attr.st_atime
2373 || w->prev.st_mtime != w->attr.st_mtime 3424 || prev.st_mtime != w->attr.st_mtime
2374 || w->prev.st_ctime != w->attr.st_ctime 3425 || prev.st_ctime != w->attr.st_ctime
2375 ) { 3426 ) {
3427 /* we only update w->prev on actual differences */
3428 /* in case we test more often than invoke the callback, */
3429 /* to ensure that prev is always different to attr */
3430 w->prev = prev;
3431
2376 #if EV_USE_INOTIFY 3432 #if EV_USE_INOTIFY
3433 if (fs_fd >= 0)
3434 {
2377 infy_del (EV_A_ w); 3435 infy_del (EV_A_ w);
2378 infy_add (EV_A_ w); 3436 infy_add (EV_A_ w);
2379 ev_stat_stat (EV_A_ w); /* avoid race... */ 3437 ev_stat_stat (EV_A_ w); /* avoid race... */
3438 }
2380 #endif 3439 #endif
2381 3440
2382 ev_feed_event (EV_A_ w, EV_STAT); 3441 ev_feed_event (EV_A_ w, EV_STAT);
2383 } 3442 }
2384} 3443}
… …
2387ev_stat_start (EV_P_ ev_stat *w) 3446ev_stat_start (EV_P_ ev_stat *w)
2388{ 3447{
2389 if (expect_false (ev_is_active (w))) 3448 if (expect_false (ev_is_active (w)))
2390 return; 3449 return;
2391 3450
2392 /* since we use memcmp, we need to clear any padding data etc. */
2393 memset (&w->prev, 0, sizeof (ev_statdata));
2394 memset (&w->attr, 0, sizeof (ev_statdata));
2395
2396 ev_stat_stat (EV_A_ w); 3451 ev_stat_stat (EV_A_ w);
2397 3452
3453 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2398 if (w->interval < MIN_STAT_INTERVAL) 3454 w->interval = MIN_STAT_INTERVAL;
2399 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2400 3455
2401 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3456 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2402 ev_set_priority (&w->timer, ev_priority (w)); 3457 ev_set_priority (&w->timer, ev_priority (w));
2403 3458
2404#if EV_USE_INOTIFY 3459#if EV_USE_INOTIFY
2405 infy_init (EV_A); 3460 infy_init (EV_A);
2406 3461
2407 if (fs_fd >= 0) 3462 if (fs_fd >= 0)
2408 infy_add (EV_A_ w); 3463 infy_add (EV_A_ w);
2409 else 3464 else
2410#endif 3465#endif
3466 {
2411 ev_timer_start (EV_A_ &w->timer); 3467 ev_timer_again (EV_A_ &w->timer);
3468 ev_unref (EV_A);
3469 }
2412 3470
2413 ev_start (EV_A_ (W)w, 1); 3471 ev_start (EV_A_ (W)w, 1);
3472
3473 EV_FREQUENT_CHECK;
2414} 3474}
2415 3475
2416void 3476void
2417ev_stat_stop (EV_P_ ev_stat *w) 3477ev_stat_stop (EV_P_ ev_stat *w)
2418{ 3478{
2419 clear_pending (EV_A_ (W)w); 3479 clear_pending (EV_A_ (W)w);
2420 if (expect_false (!ev_is_active (w))) 3480 if (expect_false (!ev_is_active (w)))
2421 return; 3481 return;
2422 3482
3483 EV_FREQUENT_CHECK;
3484
2423#if EV_USE_INOTIFY 3485#if EV_USE_INOTIFY
2424 infy_del (EV_A_ w); 3486 infy_del (EV_A_ w);
2425#endif 3487#endif
3488
3489 if (ev_is_active (&w->timer))
3490 {
3491 ev_ref (EV_A);
2426 ev_timer_stop (EV_A_ &w->timer); 3492 ev_timer_stop (EV_A_ &w->timer);
3493 }
2427 3494
2428 ev_stop (EV_A_ (W)w); 3495 ev_stop (EV_A_ (W)w);
3496
3497 EV_FREQUENT_CHECK;
2429} 3498}
2430#endif 3499#endif
2431 3500
2432#if EV_IDLE_ENABLE 3501#if EV_IDLE_ENABLE
2433void 3502void
… …
2436 if (expect_false (ev_is_active (w))) 3505 if (expect_false (ev_is_active (w)))
2437 return; 3506 return;
2438 3507
2439 pri_adjust (EV_A_ (W)w); 3508 pri_adjust (EV_A_ (W)w);
2440 3509
3510 EV_FREQUENT_CHECK;
3511
2441 { 3512 {
2442 int active = ++idlecnt [ABSPRI (w)]; 3513 int active = ++idlecnt [ABSPRI (w)];
2443 3514
2444 ++idleall; 3515 ++idleall;
2445 ev_start (EV_A_ (W)w, active); 3516 ev_start (EV_A_ (W)w, active);
2446 3517
2447 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 3518 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2448 idles [ABSPRI (w)][active - 1] = w; 3519 idles [ABSPRI (w)][active - 1] = w;
2449 } 3520 }
3521
3522 EV_FREQUENT_CHECK;
2450} 3523}
2451 3524
2452void 3525void
2453ev_idle_stop (EV_P_ ev_idle *w) 3526ev_idle_stop (EV_P_ ev_idle *w)
2454{ 3527{
2455 clear_pending (EV_A_ (W)w); 3528 clear_pending (EV_A_ (W)w);
2456 if (expect_false (!ev_is_active (w))) 3529 if (expect_false (!ev_is_active (w)))
2457 return; 3530 return;
2458 3531
3532 EV_FREQUENT_CHECK;
3533
2459 { 3534 {
2460 int active = ev_active (w); 3535 int active = ev_active (w);
2461 3536
2462 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; 3537 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2463 ev_active (idles [ABSPRI (w)][active - 1]) = active; 3538 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2464 3539
2465 ev_stop (EV_A_ (W)w); 3540 ev_stop (EV_A_ (W)w);
2466 --idleall; 3541 --idleall;
2467 } 3542 }
2468}
2469#endif
2470 3543
3544 EV_FREQUENT_CHECK;
3545}
3546#endif
3547
3548#if EV_PREPARE_ENABLE
2471void 3549void
2472ev_prepare_start (EV_P_ ev_prepare *w) 3550ev_prepare_start (EV_P_ ev_prepare *w)
2473{ 3551{
2474 if (expect_false (ev_is_active (w))) 3552 if (expect_false (ev_is_active (w)))
2475 return; 3553 return;
3554
3555 EV_FREQUENT_CHECK;
2476 3556
2477 ev_start (EV_A_ (W)w, ++preparecnt); 3557 ev_start (EV_A_ (W)w, ++preparecnt);
2478 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 3558 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2479 prepares [preparecnt - 1] = w; 3559 prepares [preparecnt - 1] = w;
3560
3561 EV_FREQUENT_CHECK;
2480} 3562}
2481 3563
2482void 3564void
2483ev_prepare_stop (EV_P_ ev_prepare *w) 3565ev_prepare_stop (EV_P_ ev_prepare *w)
2484{ 3566{
2485 clear_pending (EV_A_ (W)w); 3567 clear_pending (EV_A_ (W)w);
2486 if (expect_false (!ev_is_active (w))) 3568 if (expect_false (!ev_is_active (w)))
2487 return; 3569 return;
2488 3570
3571 EV_FREQUENT_CHECK;
3572
2489 { 3573 {
2490 int active = ev_active (w); 3574 int active = ev_active (w);
2491 3575
2492 prepares [active - 1] = prepares [--preparecnt]; 3576 prepares [active - 1] = prepares [--preparecnt];
2493 ev_active (prepares [active - 1]) = active; 3577 ev_active (prepares [active - 1]) = active;
2494 } 3578 }
2495 3579
2496 ev_stop (EV_A_ (W)w); 3580 ev_stop (EV_A_ (W)w);
2497}
2498 3581
3582 EV_FREQUENT_CHECK;
3583}
3584#endif
3585
3586#if EV_CHECK_ENABLE
2499void 3587void
2500ev_check_start (EV_P_ ev_check *w) 3588ev_check_start (EV_P_ ev_check *w)
2501{ 3589{
2502 if (expect_false (ev_is_active (w))) 3590 if (expect_false (ev_is_active (w)))
2503 return; 3591 return;
3592
3593 EV_FREQUENT_CHECK;
2504 3594
2505 ev_start (EV_A_ (W)w, ++checkcnt); 3595 ev_start (EV_A_ (W)w, ++checkcnt);
2506 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 3596 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2507 checks [checkcnt - 1] = w; 3597 checks [checkcnt - 1] = w;
3598
3599 EV_FREQUENT_CHECK;
2508} 3600}
2509 3601
2510void 3602void
2511ev_check_stop (EV_P_ ev_check *w) 3603ev_check_stop (EV_P_ ev_check *w)
2512{ 3604{
2513 clear_pending (EV_A_ (W)w); 3605 clear_pending (EV_A_ (W)w);
2514 if (expect_false (!ev_is_active (w))) 3606 if (expect_false (!ev_is_active (w)))
2515 return; 3607 return;
2516 3608
3609 EV_FREQUENT_CHECK;
3610
2517 { 3611 {
2518 int active = ev_active (w); 3612 int active = ev_active (w);
2519 3613
2520 checks [active - 1] = checks [--checkcnt]; 3614 checks [active - 1] = checks [--checkcnt];
2521 ev_active (checks [active - 1]) = active; 3615 ev_active (checks [active - 1]) = active;
2522 } 3616 }
2523 3617
2524 ev_stop (EV_A_ (W)w); 3618 ev_stop (EV_A_ (W)w);
3619
3620 EV_FREQUENT_CHECK;
2525} 3621}
3622#endif
2526 3623
2527#if EV_EMBED_ENABLE 3624#if EV_EMBED_ENABLE
2528void noinline 3625void noinline
2529ev_embed_sweep (EV_P_ ev_embed *w) 3626ev_embed_sweep (EV_P_ ev_embed *w)
2530{ 3627{
2531 ev_loop (w->other, EVLOOP_NONBLOCK); 3628 ev_run (w->other, EVRUN_NOWAIT);
2532} 3629}
2533 3630
2534static void 3631static void
2535embed_io_cb (EV_P_ ev_io *io, int revents) 3632embed_io_cb (EV_P_ ev_io *io, int revents)
2536{ 3633{
2537 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3634 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2538 3635
2539 if (ev_cb (w)) 3636 if (ev_cb (w))
2540 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3637 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2541 else 3638 else
2542 ev_loop (w->other, EVLOOP_NONBLOCK); 3639 ev_run (w->other, EVRUN_NOWAIT);
2543} 3640}
2544 3641
2545static void 3642static void
2546embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3643embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2547{ 3644{
2548 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3645 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2549 3646
2550 { 3647 {
2551 struct ev_loop *loop = w->other; 3648 EV_P = w->other;
2552 3649
2553 while (fdchangecnt) 3650 while (fdchangecnt)
2554 { 3651 {
2555 fd_reify (EV_A); 3652 fd_reify (EV_A);
2556 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3653 ev_run (EV_A_ EVRUN_NOWAIT);
2557 } 3654 }
2558 } 3655 }
3656}
3657
3658static void
3659embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3660{
3661 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3662
3663 ev_embed_stop (EV_A_ w);
3664
3665 {
3666 EV_P = w->other;
3667
3668 ev_loop_fork (EV_A);
3669 ev_run (EV_A_ EVRUN_NOWAIT);
3670 }
3671
3672 ev_embed_start (EV_A_ w);
2559} 3673}
2560 3674
2561#if 0 3675#if 0
2562static void 3676static void
2563embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3677embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2571{ 3685{
2572 if (expect_false (ev_is_active (w))) 3686 if (expect_false (ev_is_active (w)))
2573 return; 3687 return;
2574 3688
2575 { 3689 {
2576 struct ev_loop *loop = w->other; 3690 EV_P = w->other;
2577 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3691 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2578 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3692 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2579 } 3693 }
3694
3695 EV_FREQUENT_CHECK;
2580 3696
2581 ev_set_priority (&w->io, ev_priority (w)); 3697 ev_set_priority (&w->io, ev_priority (w));
2582 ev_io_start (EV_A_ &w->io); 3698 ev_io_start (EV_A_ &w->io);
2583 3699
2584 ev_prepare_init (&w->prepare, embed_prepare_cb); 3700 ev_prepare_init (&w->prepare, embed_prepare_cb);
2585 ev_set_priority (&w->prepare, EV_MINPRI); 3701 ev_set_priority (&w->prepare, EV_MINPRI);
2586 ev_prepare_start (EV_A_ &w->prepare); 3702 ev_prepare_start (EV_A_ &w->prepare);
2587 3703
3704 ev_fork_init (&w->fork, embed_fork_cb);
3705 ev_fork_start (EV_A_ &w->fork);
3706
2588 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 3707 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2589 3708
2590 ev_start (EV_A_ (W)w, 1); 3709 ev_start (EV_A_ (W)w, 1);
3710
3711 EV_FREQUENT_CHECK;
2591} 3712}
2592 3713
2593void 3714void
2594ev_embed_stop (EV_P_ ev_embed *w) 3715ev_embed_stop (EV_P_ ev_embed *w)
2595{ 3716{
2596 clear_pending (EV_A_ (W)w); 3717 clear_pending (EV_A_ (W)w);
2597 if (expect_false (!ev_is_active (w))) 3718 if (expect_false (!ev_is_active (w)))
2598 return; 3719 return;
2599 3720
3721 EV_FREQUENT_CHECK;
3722
2600 ev_io_stop (EV_A_ &w->io); 3723 ev_io_stop (EV_A_ &w->io);
2601 ev_prepare_stop (EV_A_ &w->prepare); 3724 ev_prepare_stop (EV_A_ &w->prepare);
3725 ev_fork_stop (EV_A_ &w->fork);
2602 3726
2603 ev_stop (EV_A_ (W)w); 3727 ev_stop (EV_A_ (W)w);
3728
3729 EV_FREQUENT_CHECK;
2604} 3730}
2605#endif 3731#endif
2606 3732
2607#if EV_FORK_ENABLE 3733#if EV_FORK_ENABLE
2608void 3734void
2609ev_fork_start (EV_P_ ev_fork *w) 3735ev_fork_start (EV_P_ ev_fork *w)
2610{ 3736{
2611 if (expect_false (ev_is_active (w))) 3737 if (expect_false (ev_is_active (w)))
2612 return; 3738 return;
2613 3739
3740 EV_FREQUENT_CHECK;
3741
2614 ev_start (EV_A_ (W)w, ++forkcnt); 3742 ev_start (EV_A_ (W)w, ++forkcnt);
2615 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 3743 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2616 forks [forkcnt - 1] = w; 3744 forks [forkcnt - 1] = w;
3745
3746 EV_FREQUENT_CHECK;
2617} 3747}
2618 3748
2619void 3749void
2620ev_fork_stop (EV_P_ ev_fork *w) 3750ev_fork_stop (EV_P_ ev_fork *w)
2621{ 3751{
2622 clear_pending (EV_A_ (W)w); 3752 clear_pending (EV_A_ (W)w);
2623 if (expect_false (!ev_is_active (w))) 3753 if (expect_false (!ev_is_active (w)))
2624 return; 3754 return;
2625 3755
3756 EV_FREQUENT_CHECK;
3757
2626 { 3758 {
2627 int active = ev_active (w); 3759 int active = ev_active (w);
2628 3760
2629 forks [active - 1] = forks [--forkcnt]; 3761 forks [active - 1] = forks [--forkcnt];
2630 ev_active (forks [active - 1]) = active; 3762 ev_active (forks [active - 1]) = active;
2631 } 3763 }
2632 3764
2633 ev_stop (EV_A_ (W)w); 3765 ev_stop (EV_A_ (W)w);
3766
3767 EV_FREQUENT_CHECK;
3768}
3769#endif
3770
3771#if EV_CLEANUP_ENABLE
3772void
3773ev_cleanup_start (EV_P_ ev_cleanup *w)
3774{
3775 if (expect_false (ev_is_active (w)))
3776 return;
3777
3778 EV_FREQUENT_CHECK;
3779
3780 ev_start (EV_A_ (W)w, ++cleanupcnt);
3781 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
3782 cleanups [cleanupcnt - 1] = w;
3783
3784 /* cleanup watchers should never keep a refcount on the loop */
3785 ev_unref (EV_A);
3786 EV_FREQUENT_CHECK;
3787}
3788
3789void
3790ev_cleanup_stop (EV_P_ ev_cleanup *w)
3791{
3792 clear_pending (EV_A_ (W)w);
3793 if (expect_false (!ev_is_active (w)))
3794 return;
3795
3796 EV_FREQUENT_CHECK;
3797 ev_ref (EV_A);
3798
3799 {
3800 int active = ev_active (w);
3801
3802 cleanups [active - 1] = cleanups [--cleanupcnt];
3803 ev_active (cleanups [active - 1]) = active;
3804 }
3805
3806 ev_stop (EV_A_ (W)w);
3807
3808 EV_FREQUENT_CHECK;
2634} 3809}
2635#endif 3810#endif
2636 3811
2637#if EV_ASYNC_ENABLE 3812#if EV_ASYNC_ENABLE
2638void 3813void
2639ev_async_start (EV_P_ ev_async *w) 3814ev_async_start (EV_P_ ev_async *w)
2640{ 3815{
2641 if (expect_false (ev_is_active (w))) 3816 if (expect_false (ev_is_active (w)))
2642 return; 3817 return;
2643 3818
3819 w->sent = 0;
3820
2644 evpipe_init (EV_A); 3821 evpipe_init (EV_A);
3822
3823 EV_FREQUENT_CHECK;
2645 3824
2646 ev_start (EV_A_ (W)w, ++asynccnt); 3825 ev_start (EV_A_ (W)w, ++asynccnt);
2647 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 3826 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2648 asyncs [asynccnt - 1] = w; 3827 asyncs [asynccnt - 1] = w;
3828
3829 EV_FREQUENT_CHECK;
2649} 3830}
2650 3831
2651void 3832void
2652ev_async_stop (EV_P_ ev_async *w) 3833ev_async_stop (EV_P_ ev_async *w)
2653{ 3834{
2654 clear_pending (EV_A_ (W)w); 3835 clear_pending (EV_A_ (W)w);
2655 if (expect_false (!ev_is_active (w))) 3836 if (expect_false (!ev_is_active (w)))
2656 return; 3837 return;
2657 3838
3839 EV_FREQUENT_CHECK;
3840
2658 { 3841 {
2659 int active = ev_active (w); 3842 int active = ev_active (w);
2660 3843
2661 asyncs [active - 1] = asyncs [--asynccnt]; 3844 asyncs [active - 1] = asyncs [--asynccnt];
2662 ev_active (asyncs [active - 1]) = active; 3845 ev_active (asyncs [active - 1]) = active;
2663 } 3846 }
2664 3847
2665 ev_stop (EV_A_ (W)w); 3848 ev_stop (EV_A_ (W)w);
3849
3850 EV_FREQUENT_CHECK;
2666} 3851}
2667 3852
2668void 3853void
2669ev_async_send (EV_P_ ev_async *w) 3854ev_async_send (EV_P_ ev_async *w)
2670{ 3855{
2671 w->sent = 1; 3856 w->sent = 1;
2672 evpipe_write (EV_A_ &gotasync); 3857 evpipe_write (EV_A_ &async_pending);
2673} 3858}
2674#endif 3859#endif
2675 3860
2676/*****************************************************************************/ 3861/*****************************************************************************/
2677 3862
… …
2687once_cb (EV_P_ struct ev_once *once, int revents) 3872once_cb (EV_P_ struct ev_once *once, int revents)
2688{ 3873{
2689 void (*cb)(int revents, void *arg) = once->cb; 3874 void (*cb)(int revents, void *arg) = once->cb;
2690 void *arg = once->arg; 3875 void *arg = once->arg;
2691 3876
2692 ev_io_stop (EV_A_ &once->io); 3877 ev_io_stop (EV_A_ &once->io);
2693 ev_timer_stop (EV_A_ &once->to); 3878 ev_timer_stop (EV_A_ &once->to);
2694 ev_free (once); 3879 ev_free (once);
2695 3880
2696 cb (revents, arg); 3881 cb (revents, arg);
2697} 3882}
2698 3883
2699static void 3884static void
2700once_cb_io (EV_P_ ev_io *w, int revents) 3885once_cb_io (EV_P_ ev_io *w, int revents)
2701{ 3886{
2702 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3887 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3888
3889 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2703} 3890}
2704 3891
2705static void 3892static void
2706once_cb_to (EV_P_ ev_timer *w, int revents) 3893once_cb_to (EV_P_ ev_timer *w, int revents)
2707{ 3894{
2708 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3895 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3896
3897 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2709} 3898}
2710 3899
2711void 3900void
2712ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3901ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2713{ 3902{
2714 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3903 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
2715 3904
2716 if (expect_false (!once)) 3905 if (expect_false (!once))
2717 { 3906 {
2718 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3907 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
2719 return; 3908 return;
2720 } 3909 }
2721 3910
2722 once->cb = cb; 3911 once->cb = cb;
2723 once->arg = arg; 3912 once->arg = arg;
… …
2735 ev_timer_set (&once->to, timeout, 0.); 3924 ev_timer_set (&once->to, timeout, 0.);
2736 ev_timer_start (EV_A_ &once->to); 3925 ev_timer_start (EV_A_ &once->to);
2737 } 3926 }
2738} 3927}
2739 3928
3929/*****************************************************************************/
3930
3931#if EV_WALK_ENABLE
3932void ecb_cold
3933ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3934{
3935 int i, j;
3936 ev_watcher_list *wl, *wn;
3937
3938 if (types & (EV_IO | EV_EMBED))
3939 for (i = 0; i < anfdmax; ++i)
3940 for (wl = anfds [i].head; wl; )
3941 {
3942 wn = wl->next;
3943
3944#if EV_EMBED_ENABLE
3945 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3946 {
3947 if (types & EV_EMBED)
3948 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3949 }
3950 else
3951#endif
3952#if EV_USE_INOTIFY
3953 if (ev_cb ((ev_io *)wl) == infy_cb)
3954 ;
3955 else
3956#endif
3957 if ((ev_io *)wl != &pipe_w)
3958 if (types & EV_IO)
3959 cb (EV_A_ EV_IO, wl);
3960
3961 wl = wn;
3962 }
3963
3964 if (types & (EV_TIMER | EV_STAT))
3965 for (i = timercnt + HEAP0; i-- > HEAP0; )
3966#if EV_STAT_ENABLE
3967 /*TODO: timer is not always active*/
3968 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3969 {
3970 if (types & EV_STAT)
3971 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3972 }
3973 else
3974#endif
3975 if (types & EV_TIMER)
3976 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3977
3978#if EV_PERIODIC_ENABLE
3979 if (types & EV_PERIODIC)
3980 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3981 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3982#endif
3983
3984#if EV_IDLE_ENABLE
3985 if (types & EV_IDLE)
3986 for (j = NUMPRI; i--; )
3987 for (i = idlecnt [j]; i--; )
3988 cb (EV_A_ EV_IDLE, idles [j][i]);
3989#endif
3990
3991#if EV_FORK_ENABLE
3992 if (types & EV_FORK)
3993 for (i = forkcnt; i--; )
3994 if (ev_cb (forks [i]) != embed_fork_cb)
3995 cb (EV_A_ EV_FORK, forks [i]);
3996#endif
3997
3998#if EV_ASYNC_ENABLE
3999 if (types & EV_ASYNC)
4000 for (i = asynccnt; i--; )
4001 cb (EV_A_ EV_ASYNC, asyncs [i]);
4002#endif
4003
4004#if EV_PREPARE_ENABLE
4005 if (types & EV_PREPARE)
4006 for (i = preparecnt; i--; )
4007# if EV_EMBED_ENABLE
4008 if (ev_cb (prepares [i]) != embed_prepare_cb)
4009# endif
4010 cb (EV_A_ EV_PREPARE, prepares [i]);
4011#endif
4012
4013#if EV_CHECK_ENABLE
4014 if (types & EV_CHECK)
4015 for (i = checkcnt; i--; )
4016 cb (EV_A_ EV_CHECK, checks [i]);
4017#endif
4018
4019#if EV_SIGNAL_ENABLE
4020 if (types & EV_SIGNAL)
4021 for (i = 0; i < EV_NSIG - 1; ++i)
4022 for (wl = signals [i].head; wl; )
4023 {
4024 wn = wl->next;
4025 cb (EV_A_ EV_SIGNAL, wl);
4026 wl = wn;
4027 }
4028#endif
4029
4030#if EV_CHILD_ENABLE
4031 if (types & EV_CHILD)
4032 for (i = (EV_PID_HASHSIZE); i--; )
4033 for (wl = childs [i]; wl; )
4034 {
4035 wn = wl->next;
4036 cb (EV_A_ EV_CHILD, wl);
4037 wl = wn;
4038 }
4039#endif
4040/* EV_STAT 0x00001000 /* stat data changed */
4041/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
4042}
4043#endif
4044
2740#if EV_MULTIPLICITY 4045#if EV_MULTIPLICITY
2741 #include "ev_wrap.h" 4046 #include "ev_wrap.h"
2742#endif 4047#endif
2743 4048
2744#ifdef __cplusplus 4049EV_CPP(})
2745}
2746#endif
2747 4050

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