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Comparing libev/ev.c (file contents):
Revision 1.220 by root, Sun Apr 6 09:53:17 2008 UTC vs.
Revision 1.383 by root, Wed Jul 20 00:40:14 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 */
412# include <stdint.h>
413# ifndef EFD_NONBLOCK
414# define EFD_NONBLOCK O_NONBLOCK
415# endif
416# ifndef EFD_CLOEXEC
417# ifdef O_CLOEXEC
418# define EFD_CLOEXEC O_CLOEXEC
419# else
420# define EFD_CLOEXEC 02000000
421# endif
422# endif
273int eventfd (unsigned int initval, int flags); 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};
274#endif 446#endif
275 447
276/**/ 448/**/
277 449
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
278/* 456/*
279 * This is used to avoid floating point rounding problems. 457 * This is used to work around floating point rounding problems.
280 * It is added to ev_rt_now when scheduling periodics
281 * to ensure progress, time-wise, even when rounding
282 * errors are against us.
283 * This value is good at least till the year 4000. 458 * This value is good at least till the year 4000.
284 * Better solutions welcome.
285 */ 459 */
286#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 */
287 462
288#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) */
289#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) */
290/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
291 465
292#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)
293# 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)
294# 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
295#else 493#else
296# define expect(expr,value) (expr) 494 #define ecb_inline static
297# define noinline
298# if __STDC_VERSION__ < 199901L
299# define inline
300# endif 495#endif
496
497#ifndef ECB_MEMORY_FENCE
498 #if ECB_GCC_VERSION(2,5)
499 #if __x86
500 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
501 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
502 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE /* better be safe than sorry */
503 #elif __amd64
504 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
505 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
506 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence")
507 #endif
301#endif 508 #endif
509#endif
302 510
511#ifndef ECB_MEMORY_FENCE
512 #if ECB_GCC_VERSION(4,4)
513 #define ECB_MEMORY_FENCE __sync_synchronize ()
514 #define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); })
515 #define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); })
516 #elif _MSC_VER >= 1400
517 #define ECB_MEMORY_FENCE do { } while (0)
518 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
519 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
520 #elif defined(_WIN32) && defined(MemoryBarrier)
521 #define ECB_MEMORY_FENCE MemoryBarrier ()
522 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
523 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
524 #endif
525#endif
526
527#ifndef ECB_MEMORY_FENCE
528 #include <pthread.h>
529
530 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
531 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
532 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
533 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
534#endif
535
536#if ECB_GCC_VERSION(3,1)
537 #define ecb_attribute(attrlist) __attribute__(attrlist)
538 #define ecb_is_constant(expr) __builtin_constant_p (expr)
539 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
540 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
541#else
542 #define ecb_attribute(attrlist)
543 #define ecb_is_constant(expr) 0
544 #define ecb_expect(expr,value) (expr)
545 #define ecb_prefetch(addr,rw,locality)
546#endif
547
548#define ecb_noinline ecb_attribute ((__noinline__))
549#define ecb_noreturn ecb_attribute ((__noreturn__))
550#define ecb_unused ecb_attribute ((__unused__))
551#define ecb_const ecb_attribute ((__const__))
552#define ecb_pure ecb_attribute ((__pure__))
553
554#if ECB_GCC_VERSION(4,3)
555 #define ecb_artificial ecb_attribute ((__artificial__))
556 #define ecb_hot ecb_attribute ((__hot__))
557 #define ecb_cold ecb_attribute ((__cold__))
558#else
559 #define ecb_artificial
560 #define ecb_hot
561 #define ecb_cold
562#endif
563
564/* put around conditional expressions if you are very sure that the */
565/* expression is mostly true or mostly false. note that these return */
566/* booleans, not the expression. */
303#define expect_false(expr) expect ((expr) != 0, 0) 567#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
304#define expect_true(expr) expect ((expr) != 0, 1) 568#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
569/* ecb.h end */
570
571#define expect_false(cond) ecb_expect_false (cond)
572#define expect_true(cond) ecb_expect_true (cond)
573#define noinline ecb_noinline
574
305#define inline_size static inline 575#define inline_size ecb_inline
306 576
307#if EV_MINIMAL 577#if EV_FEATURE_CODE
578# define inline_speed ecb_inline
579#else
308# define inline_speed static noinline 580# define inline_speed static noinline
581#endif
582
583#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
584
585#if EV_MINPRI == EV_MAXPRI
586# define ABSPRI(w) (((W)w), 0)
309#else 587#else
310# define inline_speed static inline
311#endif
312
313#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
314#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 588# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
589#endif
315 590
316#define EMPTY /* required for microsofts broken pseudo-c compiler */ 591#define EMPTY /* required for microsofts broken pseudo-c compiler */
317#define EMPTY2(a,b) /* used to suppress some warnings */ 592#define EMPTY2(a,b) /* used to suppress some warnings */
318 593
319typedef ev_watcher *W; 594typedef ev_watcher *W;
320typedef ev_watcher_list *WL; 595typedef ev_watcher_list *WL;
321typedef ev_watcher_time *WT; 596typedef ev_watcher_time *WT;
322 597
598#define ev_active(w) ((W)(w))->active
599#define ev_at(w) ((WT)(w))->at
600
601#if EV_USE_REALTIME
602/* sig_atomic_t is used to avoid per-thread variables or locking but still */
603/* giving it a reasonably high chance of working on typical architectures */
604static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
605#endif
606
323#if EV_USE_MONOTONIC 607#if EV_USE_MONOTONIC
324/* sig_atomic_t is used to avoid per-thread variables or locking but still */
325/* giving it a reasonably high chance of working on typical architetcures */
326static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 608static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
609#endif
610
611#ifndef EV_FD_TO_WIN32_HANDLE
612# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
613#endif
614#ifndef EV_WIN32_HANDLE_TO_FD
615# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
616#endif
617#ifndef EV_WIN32_CLOSE_FD
618# define EV_WIN32_CLOSE_FD(fd) close (fd)
327#endif 619#endif
328 620
329#ifdef _WIN32 621#ifdef _WIN32
330# include "ev_win32.c" 622# include "ev_win32.c"
331#endif 623#endif
332 624
333/*****************************************************************************/ 625/*****************************************************************************/
334 626
627/* define a suitable floor function (only used by periodics atm) */
628
629#if EV_USE_FLOOR
630# include <math.h>
631# define ev_floor(v) floor (v)
632#else
633
634#include <float.h>
635
636/* a floor() replacement function, should be independent of ev_tstamp type */
637static ev_tstamp noinline
638ev_floor (ev_tstamp v)
639{
640 /* the choice of shift factor is not terribly important */
641#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
642 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
643#else
644 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
645#endif
646
647 /* argument too large for an unsigned long? */
648 if (expect_false (v >= shift))
649 {
650 ev_tstamp f;
651
652 if (v == v - 1.)
653 return v; /* very large number */
654
655 f = shift * ev_floor (v * (1. / shift));
656 return f + ev_floor (v - f);
657 }
658
659 /* special treatment for negative args? */
660 if (expect_false (v < 0.))
661 {
662 ev_tstamp f = -ev_floor (-v);
663
664 return f - (f == v ? 0 : 1);
665 }
666
667 /* fits into an unsigned long */
668 return (unsigned long)v;
669}
670
671#endif
672
673/*****************************************************************************/
674
675#ifdef __linux
676# include <sys/utsname.h>
677#endif
678
679static unsigned int noinline ecb_cold
680ev_linux_version (void)
681{
682#ifdef __linux
683 unsigned int v = 0;
684 struct utsname buf;
685 int i;
686 char *p = buf.release;
687
688 if (uname (&buf))
689 return 0;
690
691 for (i = 3+1; --i; )
692 {
693 unsigned int c = 0;
694
695 for (;;)
696 {
697 if (*p >= '0' && *p <= '9')
698 c = c * 10 + *p++ - '0';
699 else
700 {
701 p += *p == '.';
702 break;
703 }
704 }
705
706 v = (v << 8) | c;
707 }
708
709 return v;
710#else
711 return 0;
712#endif
713}
714
715/*****************************************************************************/
716
717#if EV_AVOID_STDIO
718static void noinline ecb_cold
719ev_printerr (const char *msg)
720{
721 write (STDERR_FILENO, msg, strlen (msg));
722}
723#endif
724
335static void (*syserr_cb)(const char *msg); 725static void (*syserr_cb)(const char *msg);
336 726
337void 727void ecb_cold
338ev_set_syserr_cb (void (*cb)(const char *msg)) 728ev_set_syserr_cb (void (*cb)(const char *msg))
339{ 729{
340 syserr_cb = cb; 730 syserr_cb = cb;
341} 731}
342 732
343static void noinline 733static void noinline ecb_cold
344syserr (const char *msg) 734ev_syserr (const char *msg)
345{ 735{
346 if (!msg) 736 if (!msg)
347 msg = "(libev) system error"; 737 msg = "(libev) system error";
348 738
349 if (syserr_cb) 739 if (syserr_cb)
350 syserr_cb (msg); 740 syserr_cb (msg);
351 else 741 else
352 { 742 {
743#if EV_AVOID_STDIO
744 ev_printerr (msg);
745 ev_printerr (": ");
746 ev_printerr (strerror (errno));
747 ev_printerr ("\n");
748#else
353 perror (msg); 749 perror (msg);
750#endif
354 abort (); 751 abort ();
355 } 752 }
356} 753}
357 754
755static void *
756ev_realloc_emul (void *ptr, long size)
757{
758#if __GLIBC__
759 return realloc (ptr, size);
760#else
761 /* some systems, notably openbsd and darwin, fail to properly
762 * implement realloc (x, 0) (as required by both ansi c-89 and
763 * the single unix specification, so work around them here.
764 */
765
766 if (size)
767 return realloc (ptr, size);
768
769 free (ptr);
770 return 0;
771#endif
772}
773
358static void *(*alloc)(void *ptr, long size); 774static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
359 775
360void 776void ecb_cold
361ev_set_allocator (void *(*cb)(void *ptr, long size)) 777ev_set_allocator (void *(*cb)(void *ptr, long size))
362{ 778{
363 alloc = cb; 779 alloc = cb;
364} 780}
365 781
366inline_speed void * 782inline_speed void *
367ev_realloc (void *ptr, long size) 783ev_realloc (void *ptr, long size)
368{ 784{
369 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 785 ptr = alloc (ptr, size);
370 786
371 if (!ptr && size) 787 if (!ptr && size)
372 { 788 {
789#if EV_AVOID_STDIO
790 ev_printerr ("(libev) memory allocation failed, aborting.\n");
791#else
373 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 792 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
793#endif
374 abort (); 794 abort ();
375 } 795 }
376 796
377 return ptr; 797 return ptr;
378} 798}
… …
380#define ev_malloc(size) ev_realloc (0, (size)) 800#define ev_malloc(size) ev_realloc (0, (size))
381#define ev_free(ptr) ev_realloc ((ptr), 0) 801#define ev_free(ptr) ev_realloc ((ptr), 0)
382 802
383/*****************************************************************************/ 803/*****************************************************************************/
384 804
805/* set in reify when reification needed */
806#define EV_ANFD_REIFY 1
807
808/* file descriptor info structure */
385typedef struct 809typedef struct
386{ 810{
387 WL head; 811 WL head;
388 unsigned char events; 812 unsigned char events; /* the events watched for */
813 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
814 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
389 unsigned char reify; 815 unsigned char unused;
816#if EV_USE_EPOLL
817 unsigned int egen; /* generation counter to counter epoll bugs */
818#endif
390#if EV_SELECT_IS_WINSOCKET 819#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
391 SOCKET handle; 820 SOCKET handle;
392#endif 821#endif
822#if EV_USE_IOCP
823 OVERLAPPED or, ow;
824#endif
393} ANFD; 825} ANFD;
394 826
827/* stores the pending event set for a given watcher */
395typedef struct 828typedef struct
396{ 829{
397 W w; 830 W w;
398 int events; 831 int events; /* the pending event set for the given watcher */
399} ANPENDING; 832} ANPENDING;
400 833
401#if EV_USE_INOTIFY 834#if EV_USE_INOTIFY
835/* hash table entry per inotify-id */
402typedef struct 836typedef struct
403{ 837{
404 WL head; 838 WL head;
405} ANFS; 839} ANFS;
840#endif
841
842/* Heap Entry */
843#if EV_HEAP_CACHE_AT
844 /* a heap element */
845 typedef struct {
846 ev_tstamp at;
847 WT w;
848 } ANHE;
849
850 #define ANHE_w(he) (he).w /* access watcher, read-write */
851 #define ANHE_at(he) (he).at /* access cached at, read-only */
852 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
853#else
854 /* a heap element */
855 typedef WT ANHE;
856
857 #define ANHE_w(he) (he)
858 #define ANHE_at(he) (he)->at
859 #define ANHE_at_cache(he)
406#endif 860#endif
407 861
408#if EV_MULTIPLICITY 862#if EV_MULTIPLICITY
409 863
410 struct ev_loop 864 struct ev_loop
… …
429 883
430 static int ev_default_loop_ptr; 884 static int ev_default_loop_ptr;
431 885
432#endif 886#endif
433 887
888#if EV_FEATURE_API
889# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
890# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
891# define EV_INVOKE_PENDING invoke_cb (EV_A)
892#else
893# define EV_RELEASE_CB (void)0
894# define EV_ACQUIRE_CB (void)0
895# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
896#endif
897
898#define EVBREAK_RECURSE 0x80
899
434/*****************************************************************************/ 900/*****************************************************************************/
435 901
902#ifndef EV_HAVE_EV_TIME
436ev_tstamp 903ev_tstamp
437ev_time (void) 904ev_time (void)
438{ 905{
439#if EV_USE_REALTIME 906#if EV_USE_REALTIME
907 if (expect_true (have_realtime))
908 {
440 struct timespec ts; 909 struct timespec ts;
441 clock_gettime (CLOCK_REALTIME, &ts); 910 clock_gettime (CLOCK_REALTIME, &ts);
442 return ts.tv_sec + ts.tv_nsec * 1e-9; 911 return ts.tv_sec + ts.tv_nsec * 1e-9;
443#else 912 }
913#endif
914
444 struct timeval tv; 915 struct timeval tv;
445 gettimeofday (&tv, 0); 916 gettimeofday (&tv, 0);
446 return tv.tv_sec + tv.tv_usec * 1e-6; 917 return tv.tv_sec + tv.tv_usec * 1e-6;
447#endif
448} 918}
919#endif
449 920
450ev_tstamp inline_size 921inline_size ev_tstamp
451get_clock (void) 922get_clock (void)
452{ 923{
453#if EV_USE_MONOTONIC 924#if EV_USE_MONOTONIC
454 if (expect_true (have_monotonic)) 925 if (expect_true (have_monotonic))
455 { 926 {
… …
476 if (delay > 0.) 947 if (delay > 0.)
477 { 948 {
478#if EV_USE_NANOSLEEP 949#if EV_USE_NANOSLEEP
479 struct timespec ts; 950 struct timespec ts;
480 951
481 ts.tv_sec = (time_t)delay; 952 EV_TS_SET (ts, delay);
482 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
483
484 nanosleep (&ts, 0); 953 nanosleep (&ts, 0);
485#elif defined(_WIN32) 954#elif defined(_WIN32)
486 Sleep ((unsigned long)(delay * 1e3)); 955 Sleep ((unsigned long)(delay * 1e3));
487#else 956#else
488 struct timeval tv; 957 struct timeval tv;
489 958
490 tv.tv_sec = (time_t)delay; 959 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
491 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 960 /* something not guaranteed by newer posix versions, but guaranteed */
492 961 /* by older ones */
962 EV_TV_SET (tv, delay);
493 select (0, 0, 0, 0, &tv); 963 select (0, 0, 0, 0, &tv);
494#endif 964#endif
495 } 965 }
496} 966}
497 967
498/*****************************************************************************/ 968/*****************************************************************************/
499 969
500int inline_size 970#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
971
972/* find a suitable new size for the given array, */
973/* hopefully by rounding to a nice-to-malloc size */
974inline_size int
501array_nextsize (int elem, int cur, int cnt) 975array_nextsize (int elem, int cur, int cnt)
502{ 976{
503 int ncur = cur + 1; 977 int ncur = cur + 1;
504 978
505 do 979 do
506 ncur <<= 1; 980 ncur <<= 1;
507 while (cnt > ncur); 981 while (cnt > ncur);
508 982
509 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */ 983 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
510 if (elem * ncur > 4096) 984 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
511 { 985 {
512 ncur *= elem; 986 ncur *= elem;
513 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095; 987 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
514 ncur = ncur - sizeof (void *) * 4; 988 ncur = ncur - sizeof (void *) * 4;
515 ncur /= elem; 989 ncur /= elem;
516 } 990 }
517 991
518 return ncur; 992 return ncur;
519} 993}
520 994
521static noinline void * 995static void * noinline ecb_cold
522array_realloc (int elem, void *base, int *cur, int cnt) 996array_realloc (int elem, void *base, int *cur, int cnt)
523{ 997{
524 *cur = array_nextsize (elem, *cur, cnt); 998 *cur = array_nextsize (elem, *cur, cnt);
525 return ev_realloc (base, elem * *cur); 999 return ev_realloc (base, elem * *cur);
526} 1000}
1001
1002#define array_init_zero(base,count) \
1003 memset ((void *)(base), 0, sizeof (*(base)) * (count))
527 1004
528#define array_needsize(type,base,cur,cnt,init) \ 1005#define array_needsize(type,base,cur,cnt,init) \
529 if (expect_false ((cnt) > (cur))) \ 1006 if (expect_false ((cnt) > (cur))) \
530 { \ 1007 { \
531 int ocur_ = (cur); \ 1008 int ecb_unused ocur_ = (cur); \
532 (base) = (type *)array_realloc \ 1009 (base) = (type *)array_realloc \
533 (sizeof (type), (base), &(cur), (cnt)); \ 1010 (sizeof (type), (base), &(cur), (cnt)); \
534 init ((base) + (ocur_), (cur) - ocur_); \ 1011 init ((base) + (ocur_), (cur) - ocur_); \
535 } 1012 }
536 1013
… …
543 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 1020 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
544 } 1021 }
545#endif 1022#endif
546 1023
547#define array_free(stem, idx) \ 1024#define array_free(stem, idx) \
548 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 1025 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
549 1026
550/*****************************************************************************/ 1027/*****************************************************************************/
1028
1029/* dummy callback for pending events */
1030static void noinline
1031pendingcb (EV_P_ ev_prepare *w, int revents)
1032{
1033}
551 1034
552void noinline 1035void noinline
553ev_feed_event (EV_P_ void *w, int revents) 1036ev_feed_event (EV_P_ void *w, int revents)
554{ 1037{
555 W w_ = (W)w; 1038 W w_ = (W)w;
… …
564 pendings [pri][w_->pending - 1].w = w_; 1047 pendings [pri][w_->pending - 1].w = w_;
565 pendings [pri][w_->pending - 1].events = revents; 1048 pendings [pri][w_->pending - 1].events = revents;
566 } 1049 }
567} 1050}
568 1051
569void inline_speed 1052inline_speed void
1053feed_reverse (EV_P_ W w)
1054{
1055 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
1056 rfeeds [rfeedcnt++] = w;
1057}
1058
1059inline_size void
1060feed_reverse_done (EV_P_ int revents)
1061{
1062 do
1063 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
1064 while (rfeedcnt);
1065}
1066
1067inline_speed void
570queue_events (EV_P_ W *events, int eventcnt, int type) 1068queue_events (EV_P_ W *events, int eventcnt, int type)
571{ 1069{
572 int i; 1070 int i;
573 1071
574 for (i = 0; i < eventcnt; ++i) 1072 for (i = 0; i < eventcnt; ++i)
575 ev_feed_event (EV_A_ events [i], type); 1073 ev_feed_event (EV_A_ events [i], type);
576} 1074}
577 1075
578/*****************************************************************************/ 1076/*****************************************************************************/
579 1077
580void inline_size 1078inline_speed void
581anfds_init (ANFD *base, int count)
582{
583 while (count--)
584 {
585 base->head = 0;
586 base->events = EV_NONE;
587 base->reify = 0;
588
589 ++base;
590 }
591}
592
593void inline_speed
594fd_event (EV_P_ int fd, int revents) 1079fd_event_nocheck (EV_P_ int fd, int revents)
595{ 1080{
596 ANFD *anfd = anfds + fd; 1081 ANFD *anfd = anfds + fd;
597 ev_io *w; 1082 ev_io *w;
598 1083
599 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1084 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
603 if (ev) 1088 if (ev)
604 ev_feed_event (EV_A_ (W)w, ev); 1089 ev_feed_event (EV_A_ (W)w, ev);
605 } 1090 }
606} 1091}
607 1092
1093/* do not submit kernel events for fds that have reify set */
1094/* because that means they changed while we were polling for new events */
1095inline_speed void
1096fd_event (EV_P_ int fd, int revents)
1097{
1098 ANFD *anfd = anfds + fd;
1099
1100 if (expect_true (!anfd->reify))
1101 fd_event_nocheck (EV_A_ fd, revents);
1102}
1103
608void 1104void
609ev_feed_fd_event (EV_P_ int fd, int revents) 1105ev_feed_fd_event (EV_P_ int fd, int revents)
610{ 1106{
611 if (fd >= 0 && fd < anfdmax) 1107 if (fd >= 0 && fd < anfdmax)
612 fd_event (EV_A_ fd, revents); 1108 fd_event_nocheck (EV_A_ fd, revents);
613} 1109}
614 1110
615void inline_size 1111/* make sure the external fd watch events are in-sync */
1112/* with the kernel/libev internal state */
1113inline_size void
616fd_reify (EV_P) 1114fd_reify (EV_P)
617{ 1115{
618 int i; 1116 int i;
1117
1118#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1119 for (i = 0; i < fdchangecnt; ++i)
1120 {
1121 int fd = fdchanges [i];
1122 ANFD *anfd = anfds + fd;
1123
1124 if (anfd->reify & EV__IOFDSET && anfd->head)
1125 {
1126 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1127
1128 if (handle != anfd->handle)
1129 {
1130 unsigned long arg;
1131
1132 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1133
1134 /* handle changed, but fd didn't - we need to do it in two steps */
1135 backend_modify (EV_A_ fd, anfd->events, 0);
1136 anfd->events = 0;
1137 anfd->handle = handle;
1138 }
1139 }
1140 }
1141#endif
619 1142
620 for (i = 0; i < fdchangecnt; ++i) 1143 for (i = 0; i < fdchangecnt; ++i)
621 { 1144 {
622 int fd = fdchanges [i]; 1145 int fd = fdchanges [i];
623 ANFD *anfd = anfds + fd; 1146 ANFD *anfd = anfds + fd;
624 ev_io *w; 1147 ev_io *w;
625 1148
626 unsigned char events = 0; 1149 unsigned char o_events = anfd->events;
1150 unsigned char o_reify = anfd->reify;
627 1151
628 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1152 anfd->reify = 0;
629 events |= (unsigned char)w->events;
630 1153
631#if EV_SELECT_IS_WINSOCKET 1154 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
632 if (events)
633 { 1155 {
634 unsigned long argp; 1156 anfd->events = 0;
635 #ifdef EV_FD_TO_WIN32_HANDLE 1157
636 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1158 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
637 #else 1159 anfd->events |= (unsigned char)w->events;
638 anfd->handle = _get_osfhandle (fd); 1160
639 #endif 1161 if (o_events != anfd->events)
640 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 1162 o_reify = EV__IOFDSET; /* actually |= */
641 } 1163 }
642#endif
643 1164
644 { 1165 if (o_reify & EV__IOFDSET)
645 unsigned char o_events = anfd->events;
646 unsigned char o_reify = anfd->reify;
647
648 anfd->reify = 0;
649 anfd->events = events;
650
651 if (o_events != events || o_reify & EV_IOFDSET)
652 backend_modify (EV_A_ fd, o_events, events); 1166 backend_modify (EV_A_ fd, o_events, anfd->events);
653 }
654 } 1167 }
655 1168
656 fdchangecnt = 0; 1169 fdchangecnt = 0;
657} 1170}
658 1171
659void inline_size 1172/* something about the given fd changed */
1173inline_size void
660fd_change (EV_P_ int fd, int flags) 1174fd_change (EV_P_ int fd, int flags)
661{ 1175{
662 unsigned char reify = anfds [fd].reify; 1176 unsigned char reify = anfds [fd].reify;
663 anfds [fd].reify |= flags; 1177 anfds [fd].reify |= flags;
664 1178
… …
668 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1182 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
669 fdchanges [fdchangecnt - 1] = fd; 1183 fdchanges [fdchangecnt - 1] = fd;
670 } 1184 }
671} 1185}
672 1186
673void inline_speed 1187/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1188inline_speed void ecb_cold
674fd_kill (EV_P_ int fd) 1189fd_kill (EV_P_ int fd)
675{ 1190{
676 ev_io *w; 1191 ev_io *w;
677 1192
678 while ((w = (ev_io *)anfds [fd].head)) 1193 while ((w = (ev_io *)anfds [fd].head))
… …
680 ev_io_stop (EV_A_ w); 1195 ev_io_stop (EV_A_ w);
681 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1196 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
682 } 1197 }
683} 1198}
684 1199
685int inline_size 1200/* check whether the given fd is actually valid, for error recovery */
1201inline_size int ecb_cold
686fd_valid (int fd) 1202fd_valid (int fd)
687{ 1203{
688#ifdef _WIN32 1204#ifdef _WIN32
689 return _get_osfhandle (fd) != -1; 1205 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
690#else 1206#else
691 return fcntl (fd, F_GETFD) != -1; 1207 return fcntl (fd, F_GETFD) != -1;
692#endif 1208#endif
693} 1209}
694 1210
695/* called on EBADF to verify fds */ 1211/* called on EBADF to verify fds */
696static void noinline 1212static void noinline ecb_cold
697fd_ebadf (EV_P) 1213fd_ebadf (EV_P)
698{ 1214{
699 int fd; 1215 int fd;
700 1216
701 for (fd = 0; fd < anfdmax; ++fd) 1217 for (fd = 0; fd < anfdmax; ++fd)
702 if (anfds [fd].events) 1218 if (anfds [fd].events)
703 if (!fd_valid (fd) == -1 && errno == EBADF) 1219 if (!fd_valid (fd) && errno == EBADF)
704 fd_kill (EV_A_ fd); 1220 fd_kill (EV_A_ fd);
705} 1221}
706 1222
707/* called on ENOMEM in select/poll to kill some fds and retry */ 1223/* called on ENOMEM in select/poll to kill some fds and retry */
708static void noinline 1224static void noinline ecb_cold
709fd_enomem (EV_P) 1225fd_enomem (EV_P)
710{ 1226{
711 int fd; 1227 int fd;
712 1228
713 for (fd = anfdmax; fd--; ) 1229 for (fd = anfdmax; fd--; )
714 if (anfds [fd].events) 1230 if (anfds [fd].events)
715 { 1231 {
716 fd_kill (EV_A_ fd); 1232 fd_kill (EV_A_ fd);
717 return; 1233 break;
718 } 1234 }
719} 1235}
720 1236
721/* usually called after fork if backend needs to re-arm all fds from scratch */ 1237/* usually called after fork if backend needs to re-arm all fds from scratch */
722static void noinline 1238static void noinline
… …
726 1242
727 for (fd = 0; fd < anfdmax; ++fd) 1243 for (fd = 0; fd < anfdmax; ++fd)
728 if (anfds [fd].events) 1244 if (anfds [fd].events)
729 { 1245 {
730 anfds [fd].events = 0; 1246 anfds [fd].events = 0;
1247 anfds [fd].emask = 0;
731 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1248 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
732 } 1249 }
733} 1250}
734 1251
735/*****************************************************************************/ 1252/* used to prepare libev internal fd's */
736 1253/* this is not fork-safe */
737void inline_speed 1254inline_speed void
738upheap (WT *heap, int k)
739{
740 WT w = heap [k];
741
742 while (k)
743 {
744 int p = (k - 1) >> 1;
745
746 if (heap [p]->at <= w->at)
747 break;
748
749 heap [k] = heap [p];
750 ((W)heap [k])->active = k + 1;
751 k = p;
752 }
753
754 heap [k] = w;
755 ((W)heap [k])->active = k + 1;
756}
757
758void inline_speed
759downheap (WT *heap, int N, int k)
760{
761 WT w = heap [k];
762
763 for (;;)
764 {
765 int c = (k << 1) + 1;
766
767 if (c >= N)
768 break;
769
770 c += c + 1 < N && heap [c]->at > heap [c + 1]->at
771 ? 1 : 0;
772
773 if (w->at <= heap [c]->at)
774 break;
775
776 heap [k] = heap [c];
777 ((W)heap [k])->active = k + 1;
778
779 k = c;
780 }
781
782 heap [k] = w;
783 ((W)heap [k])->active = k + 1;
784}
785
786void inline_size
787adjustheap (WT *heap, int N, int k)
788{
789 upheap (heap, k);
790 downheap (heap, N, k);
791}
792
793/*****************************************************************************/
794
795typedef struct
796{
797 WL head;
798 EV_ATOMIC_T gotsig;
799} ANSIG;
800
801static ANSIG *signals;
802static int signalmax;
803
804static EV_ATOMIC_T gotsig;
805
806void inline_size
807signals_init (ANSIG *base, int count)
808{
809 while (count--)
810 {
811 base->head = 0;
812 base->gotsig = 0;
813
814 ++base;
815 }
816}
817
818/*****************************************************************************/
819
820void inline_speed
821fd_intern (int fd) 1255fd_intern (int fd)
822{ 1256{
823#ifdef _WIN32 1257#ifdef _WIN32
824 int arg = 1; 1258 unsigned long arg = 1;
825 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 1259 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
826#else 1260#else
827 fcntl (fd, F_SETFD, FD_CLOEXEC); 1261 fcntl (fd, F_SETFD, FD_CLOEXEC);
828 fcntl (fd, F_SETFL, O_NONBLOCK); 1262 fcntl (fd, F_SETFL, O_NONBLOCK);
829#endif 1263#endif
830} 1264}
831 1265
1266/*****************************************************************************/
1267
1268/*
1269 * the heap functions want a real array index. array index 0 is guaranteed to not
1270 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1271 * the branching factor of the d-tree.
1272 */
1273
1274/*
1275 * at the moment we allow libev the luxury of two heaps,
1276 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap
1277 * which is more cache-efficient.
1278 * the difference is about 5% with 50000+ watchers.
1279 */
1280#if EV_USE_4HEAP
1281
1282#define DHEAP 4
1283#define HEAP0 (DHEAP - 1) /* index of first element in heap */
1284#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
1285#define UPHEAP_DONE(p,k) ((p) == (k))
1286
1287/* away from the root */
1288inline_speed void
1289downheap (ANHE *heap, int N, int k)
1290{
1291 ANHE he = heap [k];
1292 ANHE *E = heap + N + HEAP0;
1293
1294 for (;;)
1295 {
1296 ev_tstamp minat;
1297 ANHE *minpos;
1298 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1299
1300 /* find minimum child */
1301 if (expect_true (pos + DHEAP - 1 < E))
1302 {
1303 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1304 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1305 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1306 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1307 }
1308 else if (pos < E)
1309 {
1310 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1311 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1312 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1313 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1314 }
1315 else
1316 break;
1317
1318 if (ANHE_at (he) <= minat)
1319 break;
1320
1321 heap [k] = *minpos;
1322 ev_active (ANHE_w (*minpos)) = k;
1323
1324 k = minpos - heap;
1325 }
1326
1327 heap [k] = he;
1328 ev_active (ANHE_w (he)) = k;
1329}
1330
1331#else /* 4HEAP */
1332
1333#define HEAP0 1
1334#define HPARENT(k) ((k) >> 1)
1335#define UPHEAP_DONE(p,k) (!(p))
1336
1337/* away from the root */
1338inline_speed void
1339downheap (ANHE *heap, int N, int k)
1340{
1341 ANHE he = heap [k];
1342
1343 for (;;)
1344 {
1345 int c = k << 1;
1346
1347 if (c >= N + HEAP0)
1348 break;
1349
1350 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
1351 ? 1 : 0;
1352
1353 if (ANHE_at (he) <= ANHE_at (heap [c]))
1354 break;
1355
1356 heap [k] = heap [c];
1357 ev_active (ANHE_w (heap [k])) = k;
1358
1359 k = c;
1360 }
1361
1362 heap [k] = he;
1363 ev_active (ANHE_w (he)) = k;
1364}
1365#endif
1366
1367/* towards the root */
1368inline_speed void
1369upheap (ANHE *heap, int k)
1370{
1371 ANHE he = heap [k];
1372
1373 for (;;)
1374 {
1375 int p = HPARENT (k);
1376
1377 if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
1378 break;
1379
1380 heap [k] = heap [p];
1381 ev_active (ANHE_w (heap [k])) = k;
1382 k = p;
1383 }
1384
1385 heap [k] = he;
1386 ev_active (ANHE_w (he)) = k;
1387}
1388
1389/* move an element suitably so it is in a correct place */
1390inline_size void
1391adjustheap (ANHE *heap, int N, int k)
1392{
1393 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1394 upheap (heap, k);
1395 else
1396 downheap (heap, N, k);
1397}
1398
1399/* rebuild the heap: this function is used only once and executed rarely */
1400inline_size void
1401reheap (ANHE *heap, int N)
1402{
1403 int i;
1404
1405 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
1406 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
1407 for (i = 0; i < N; ++i)
1408 upheap (heap, i + HEAP0);
1409}
1410
1411/*****************************************************************************/
1412
1413/* associate signal watchers to a signal signal */
1414typedef struct
1415{
1416 EV_ATOMIC_T pending;
1417#if EV_MULTIPLICITY
1418 EV_P;
1419#endif
1420 WL head;
1421} ANSIG;
1422
1423static ANSIG signals [EV_NSIG - 1];
1424
1425/*****************************************************************************/
1426
1427#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1428
832static void noinline 1429static void noinline ecb_cold
833evpipe_init (EV_P) 1430evpipe_init (EV_P)
834{ 1431{
835 if (!ev_is_active (&pipeev)) 1432 if (!ev_is_active (&pipe_w))
836 { 1433 {
837#if EV_USE_EVENTFD 1434# if EV_USE_EVENTFD
1435 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1436 if (evfd < 0 && errno == EINVAL)
838 if ((evfd = eventfd (0, 0)) >= 0) 1437 evfd = eventfd (0, 0);
1438
1439 if (evfd >= 0)
839 { 1440 {
840 evpipe [0] = -1; 1441 evpipe [0] = -1;
841 fd_intern (evfd); 1442 fd_intern (evfd); /* doing it twice doesn't hurt */
842 ev_io_set (&pipeev, evfd, EV_READ); 1443 ev_io_set (&pipe_w, evfd, EV_READ);
843 } 1444 }
844 else 1445 else
845#endif 1446# endif
846 { 1447 {
847 while (pipe (evpipe)) 1448 while (pipe (evpipe))
848 syserr ("(libev) error creating signal/async pipe"); 1449 ev_syserr ("(libev) error creating signal/async pipe");
849 1450
850 fd_intern (evpipe [0]); 1451 fd_intern (evpipe [0]);
851 fd_intern (evpipe [1]); 1452 fd_intern (evpipe [1]);
852 ev_io_set (&pipeev, evpipe [0], EV_READ); 1453 ev_io_set (&pipe_w, evpipe [0], EV_READ);
853 } 1454 }
854 1455
855 ev_io_start (EV_A_ &pipeev); 1456 ev_io_start (EV_A_ &pipe_w);
856 ev_unref (EV_A); /* watcher should not keep loop alive */ 1457 ev_unref (EV_A); /* watcher should not keep loop alive */
857 } 1458 }
858} 1459}
859 1460
860void inline_size 1461inline_speed void
861evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1462evpipe_write (EV_P_ EV_ATOMIC_T *flag)
862{ 1463{
863 if (!*flag) 1464 if (expect_true (*flag))
1465 return;
1466
1467 *flag = 1;
1468
1469 ECB_MEMORY_FENCE_RELEASE;
1470
1471 pipe_write_skipped = 1;
1472
1473 ECB_MEMORY_FENCE;
1474
1475 if (pipe_write_wanted)
864 { 1476 {
1477 int old_errno;
1478
1479 pipe_write_skipped = 0; /* optimisation only */
1480
865 int old_errno = errno; /* save errno because write might clobber it */ 1481 old_errno = errno; /* save errno because write will clobber it */
866
867 *flag = 1;
868 1482
869#if EV_USE_EVENTFD 1483#if EV_USE_EVENTFD
870 if (evfd >= 0) 1484 if (evfd >= 0)
871 { 1485 {
872 uint64_t counter = 1; 1486 uint64_t counter = 1;
873 write (evfd, &counter, sizeof (uint64_t)); 1487 write (evfd, &counter, sizeof (uint64_t));
874 } 1488 }
875 else 1489 else
876#endif 1490#endif
1491 {
1492 /* win32 people keep sending patches that change this write() to send() */
1493 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1494 /* so when you think this write should be a send instead, please find out */
1495 /* where your send() is from - it's definitely not the microsoft send, and */
1496 /* tell me. thank you. */
877 write (evpipe [1], &old_errno, 1); 1497 write (evpipe [1], &(evpipe [1]), 1);
1498 }
878 1499
879 errno = old_errno; 1500 errno = old_errno;
880 } 1501 }
881} 1502}
882 1503
1504/* called whenever the libev signal pipe */
1505/* got some events (signal, async) */
883static void 1506static void
884pipecb (EV_P_ ev_io *iow, int revents) 1507pipecb (EV_P_ ev_io *iow, int revents)
885{ 1508{
1509 int i;
1510
1511 if (revents & EV_READ)
1512 {
886#if EV_USE_EVENTFD 1513#if EV_USE_EVENTFD
887 if (evfd >= 0) 1514 if (evfd >= 0)
888 { 1515 {
889 uint64_t counter = 1; 1516 uint64_t counter;
890 read (evfd, &counter, sizeof (uint64_t)); 1517 read (evfd, &counter, sizeof (uint64_t));
891 } 1518 }
892 else 1519 else
893#endif 1520#endif
894 { 1521 {
895 char dummy; 1522 char dummy;
1523 /* see discussion in evpipe_write when you think this read should be recv in win32 */
896 read (evpipe [0], &dummy, 1); 1524 read (evpipe [0], &dummy, 1);
1525 }
1526 }
1527
1528 pipe_write_skipped = 0;
1529
1530#if EV_SIGNAL_ENABLE
1531 if (sig_pending)
897 } 1532 {
1533 sig_pending = 0;
898 1534
899 if (gotsig && ev_is_default_loop (EV_A)) 1535 for (i = EV_NSIG - 1; i--; )
900 { 1536 if (expect_false (signals [i].pending))
901 int signum;
902 gotsig = 0;
903
904 for (signum = signalmax; signum--; )
905 if (signals [signum].gotsig)
906 ev_feed_signal_event (EV_A_ signum + 1); 1537 ev_feed_signal_event (EV_A_ i + 1);
907 } 1538 }
1539#endif
908 1540
909#if EV_ASYNC_ENABLE 1541#if EV_ASYNC_ENABLE
910 if (gotasync) 1542 if (async_pending)
911 { 1543 {
912 int i; 1544 async_pending = 0;
913 gotasync = 0;
914 1545
915 for (i = asynccnt; i--; ) 1546 for (i = asynccnt; i--; )
916 if (asyncs [i]->sent) 1547 if (asyncs [i]->sent)
917 { 1548 {
918 asyncs [i]->sent = 0; 1549 asyncs [i]->sent = 0;
… …
922#endif 1553#endif
923} 1554}
924 1555
925/*****************************************************************************/ 1556/*****************************************************************************/
926 1557
1558void
1559ev_feed_signal (int signum)
1560{
1561#if EV_MULTIPLICITY
1562 EV_P = signals [signum - 1].loop;
1563
1564 if (!EV_A)
1565 return;
1566#endif
1567
1568 if (!ev_active (&pipe_w))
1569 return;
1570
1571 signals [signum - 1].pending = 1;
1572 evpipe_write (EV_A_ &sig_pending);
1573}
1574
927static void 1575static void
928ev_sighandler (int signum) 1576ev_sighandler (int signum)
929{ 1577{
930#if EV_MULTIPLICITY
931 struct ev_loop *loop = &default_loop_struct;
932#endif
933
934#if _WIN32 1578#ifdef _WIN32
935 signal (signum, ev_sighandler); 1579 signal (signum, ev_sighandler);
936#endif 1580#endif
937 1581
938 signals [signum - 1].gotsig = 1; 1582 ev_feed_signal (signum);
939 evpipe_write (EV_A_ &gotsig);
940} 1583}
941 1584
942void noinline 1585void noinline
943ev_feed_signal_event (EV_P_ int signum) 1586ev_feed_signal_event (EV_P_ int signum)
944{ 1587{
945 WL w; 1588 WL w;
946 1589
1590 if (expect_false (signum <= 0 || signum > EV_NSIG))
1591 return;
1592
1593 --signum;
1594
947#if EV_MULTIPLICITY 1595#if EV_MULTIPLICITY
948 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1596 /* it is permissible to try to feed a signal to the wrong loop */
949#endif 1597 /* or, likely more useful, feeding a signal nobody is waiting for */
950 1598
951 --signum; 1599 if (expect_false (signals [signum].loop != EV_A))
952
953 if (signum < 0 || signum >= signalmax)
954 return; 1600 return;
1601#endif
955 1602
956 signals [signum].gotsig = 0; 1603 signals [signum].pending = 0;
957 1604
958 for (w = signals [signum].head; w; w = w->next) 1605 for (w = signals [signum].head; w; w = w->next)
959 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1606 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
960} 1607}
961 1608
1609#if EV_USE_SIGNALFD
1610static void
1611sigfdcb (EV_P_ ev_io *iow, int revents)
1612{
1613 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1614
1615 for (;;)
1616 {
1617 ssize_t res = read (sigfd, si, sizeof (si));
1618
1619 /* not ISO-C, as res might be -1, but works with SuS */
1620 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1621 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1622
1623 if (res < (ssize_t)sizeof (si))
1624 break;
1625 }
1626}
1627#endif
1628
1629#endif
1630
962/*****************************************************************************/ 1631/*****************************************************************************/
963 1632
1633#if EV_CHILD_ENABLE
964static WL childs [EV_PID_HASHSIZE]; 1634static WL childs [EV_PID_HASHSIZE];
965
966#ifndef _WIN32
967 1635
968static ev_signal childev; 1636static ev_signal childev;
969 1637
970#ifndef WIFCONTINUED 1638#ifndef WIFCONTINUED
971# define WIFCONTINUED(status) 0 1639# define WIFCONTINUED(status) 0
972#endif 1640#endif
973 1641
974void inline_speed 1642/* handle a single child status event */
1643inline_speed void
975child_reap (EV_P_ int chain, int pid, int status) 1644child_reap (EV_P_ int chain, int pid, int status)
976{ 1645{
977 ev_child *w; 1646 ev_child *w;
978 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1647 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
979 1648
980 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1649 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
981 { 1650 {
982 if ((w->pid == pid || !w->pid) 1651 if ((w->pid == pid || !w->pid)
983 && (!traced || (w->flags & 1))) 1652 && (!traced || (w->flags & 1)))
984 { 1653 {
985 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1654 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
992 1661
993#ifndef WCONTINUED 1662#ifndef WCONTINUED
994# define WCONTINUED 0 1663# define WCONTINUED 0
995#endif 1664#endif
996 1665
1666/* called on sigchld etc., calls waitpid */
997static void 1667static void
998childcb (EV_P_ ev_signal *sw, int revents) 1668childcb (EV_P_ ev_signal *sw, int revents)
999{ 1669{
1000 int pid, status; 1670 int pid, status;
1001 1671
… …
1009 /* make sure we are called again until all children have been reaped */ 1679 /* make sure we are called again until all children have been reaped */
1010 /* we need to do it this way so that the callback gets called before we continue */ 1680 /* we need to do it this way so that the callback gets called before we continue */
1011 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1681 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1012 1682
1013 child_reap (EV_A_ pid, pid, status); 1683 child_reap (EV_A_ pid, pid, status);
1014 if (EV_PID_HASHSIZE > 1) 1684 if ((EV_PID_HASHSIZE) > 1)
1015 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1685 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1016} 1686}
1017 1687
1018#endif 1688#endif
1019 1689
1020/*****************************************************************************/ 1690/*****************************************************************************/
1021 1691
1692#if EV_USE_IOCP
1693# include "ev_iocp.c"
1694#endif
1022#if EV_USE_PORT 1695#if EV_USE_PORT
1023# include "ev_port.c" 1696# include "ev_port.c"
1024#endif 1697#endif
1025#if EV_USE_KQUEUE 1698#if EV_USE_KQUEUE
1026# include "ev_kqueue.c" 1699# include "ev_kqueue.c"
… …
1033#endif 1706#endif
1034#if EV_USE_SELECT 1707#if EV_USE_SELECT
1035# include "ev_select.c" 1708# include "ev_select.c"
1036#endif 1709#endif
1037 1710
1038int 1711int ecb_cold
1039ev_version_major (void) 1712ev_version_major (void)
1040{ 1713{
1041 return EV_VERSION_MAJOR; 1714 return EV_VERSION_MAJOR;
1042} 1715}
1043 1716
1044int 1717int ecb_cold
1045ev_version_minor (void) 1718ev_version_minor (void)
1046{ 1719{
1047 return EV_VERSION_MINOR; 1720 return EV_VERSION_MINOR;
1048} 1721}
1049 1722
1050/* return true if we are running with elevated privileges and should ignore env variables */ 1723/* return true if we are running with elevated privileges and should ignore env variables */
1051int inline_size 1724int inline_size ecb_cold
1052enable_secure (void) 1725enable_secure (void)
1053{ 1726{
1054#ifdef _WIN32 1727#ifdef _WIN32
1055 return 0; 1728 return 0;
1056#else 1729#else
1057 return getuid () != geteuid () 1730 return getuid () != geteuid ()
1058 || getgid () != getegid (); 1731 || getgid () != getegid ();
1059#endif 1732#endif
1060} 1733}
1061 1734
1062unsigned int 1735unsigned int ecb_cold
1063ev_supported_backends (void) 1736ev_supported_backends (void)
1064{ 1737{
1065 unsigned int flags = 0; 1738 unsigned int flags = 0;
1066 1739
1067 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 1740 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1071 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 1744 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1072 1745
1073 return flags; 1746 return flags;
1074} 1747}
1075 1748
1076unsigned int 1749unsigned int ecb_cold
1077ev_recommended_backends (void) 1750ev_recommended_backends (void)
1078{ 1751{
1079 unsigned int flags = ev_supported_backends (); 1752 unsigned int flags = ev_supported_backends ();
1080 1753
1081#ifndef __NetBSD__ 1754#ifndef __NetBSD__
1082 /* kqueue is borked on everything but netbsd apparently */ 1755 /* kqueue is borked on everything but netbsd apparently */
1083 /* it usually doesn't work correctly on anything but sockets and pipes */ 1756 /* it usually doesn't work correctly on anything but sockets and pipes */
1084 flags &= ~EVBACKEND_KQUEUE; 1757 flags &= ~EVBACKEND_KQUEUE;
1085#endif 1758#endif
1086#ifdef __APPLE__ 1759#ifdef __APPLE__
1087 // flags &= ~EVBACKEND_KQUEUE; for documentation 1760 /* only select works correctly on that "unix-certified" platform */
1088 flags &= ~EVBACKEND_POLL; 1761 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1762 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1763#endif
1764#ifdef __FreeBSD__
1765 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1089#endif 1766#endif
1090 1767
1091 return flags; 1768 return flags;
1092} 1769}
1093 1770
1094unsigned int 1771unsigned int ecb_cold
1095ev_embeddable_backends (void) 1772ev_embeddable_backends (void)
1096{ 1773{
1097 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1774 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1098 1775
1099 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 1776 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1100 /* please fix it and tell me how to detect the fix */ 1777 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1101 flags &= ~EVBACKEND_EPOLL; 1778 flags &= ~EVBACKEND_EPOLL;
1102 1779
1103 return flags; 1780 return flags;
1104} 1781}
1105 1782
1106unsigned int 1783unsigned int
1107ev_backend (EV_P) 1784ev_backend (EV_P)
1108{ 1785{
1109 return backend; 1786 return backend;
1110} 1787}
1111 1788
1789#if EV_FEATURE_API
1112unsigned int 1790unsigned int
1113ev_loop_count (EV_P) 1791ev_iteration (EV_P)
1114{ 1792{
1115 return loop_count; 1793 return loop_count;
1794}
1795
1796unsigned int
1797ev_depth (EV_P)
1798{
1799 return loop_depth;
1116} 1800}
1117 1801
1118void 1802void
1119ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1803ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1120{ 1804{
… …
1125ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1809ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1126{ 1810{
1127 timeout_blocktime = interval; 1811 timeout_blocktime = interval;
1128} 1812}
1129 1813
1814void
1815ev_set_userdata (EV_P_ void *data)
1816{
1817 userdata = data;
1818}
1819
1820void *
1821ev_userdata (EV_P)
1822{
1823 return userdata;
1824}
1825
1826void
1827ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1828{
1829 invoke_cb = invoke_pending_cb;
1830}
1831
1832void
1833ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1834{
1835 release_cb = release;
1836 acquire_cb = acquire;
1837}
1838#endif
1839
1840/* initialise a loop structure, must be zero-initialised */
1130static void noinline 1841static void noinline ecb_cold
1131loop_init (EV_P_ unsigned int flags) 1842loop_init (EV_P_ unsigned int flags)
1132{ 1843{
1133 if (!backend) 1844 if (!backend)
1134 { 1845 {
1846 origflags = flags;
1847
1848#if EV_USE_REALTIME
1849 if (!have_realtime)
1850 {
1851 struct timespec ts;
1852
1853 if (!clock_gettime (CLOCK_REALTIME, &ts))
1854 have_realtime = 1;
1855 }
1856#endif
1857
1135#if EV_USE_MONOTONIC 1858#if EV_USE_MONOTONIC
1859 if (!have_monotonic)
1136 { 1860 {
1137 struct timespec ts; 1861 struct timespec ts;
1862
1138 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1863 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1139 have_monotonic = 1; 1864 have_monotonic = 1;
1140 } 1865 }
1141#endif
1142
1143 ev_rt_now = ev_time ();
1144 mn_now = get_clock ();
1145 now_floor = mn_now;
1146 rtmn_diff = ev_rt_now - mn_now;
1147
1148 io_blocktime = 0.;
1149 timeout_blocktime = 0.;
1150 backend = 0;
1151 backend_fd = -1;
1152 gotasync = 0;
1153#if EV_USE_INOTIFY
1154 fs_fd = -2;
1155#endif 1866#endif
1156 1867
1157 /* pid check not overridable via env */ 1868 /* pid check not overridable via env */
1158#ifndef _WIN32 1869#ifndef _WIN32
1159 if (flags & EVFLAG_FORKCHECK) 1870 if (flags & EVFLAG_FORKCHECK)
… …
1163 if (!(flags & EVFLAG_NOENV) 1874 if (!(flags & EVFLAG_NOENV)
1164 && !enable_secure () 1875 && !enable_secure ()
1165 && getenv ("LIBEV_FLAGS")) 1876 && getenv ("LIBEV_FLAGS"))
1166 flags = atoi (getenv ("LIBEV_FLAGS")); 1877 flags = atoi (getenv ("LIBEV_FLAGS"));
1167 1878
1168 if (!(flags & 0x0000ffffUL)) 1879 ev_rt_now = ev_time ();
1880 mn_now = get_clock ();
1881 now_floor = mn_now;
1882 rtmn_diff = ev_rt_now - mn_now;
1883#if EV_FEATURE_API
1884 invoke_cb = ev_invoke_pending;
1885#endif
1886
1887 io_blocktime = 0.;
1888 timeout_blocktime = 0.;
1889 backend = 0;
1890 backend_fd = -1;
1891 sig_pending = 0;
1892#if EV_ASYNC_ENABLE
1893 async_pending = 0;
1894#endif
1895 pipe_write_skipped = 0;
1896 pipe_write_wanted = 0;
1897#if EV_USE_INOTIFY
1898 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1899#endif
1900#if EV_USE_SIGNALFD
1901 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1902#endif
1903
1904 if (!(flags & EVBACKEND_MASK))
1169 flags |= ev_recommended_backends (); 1905 flags |= ev_recommended_backends ();
1170 1906
1907#if EV_USE_IOCP
1908 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1909#endif
1171#if EV_USE_PORT 1910#if EV_USE_PORT
1172 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1911 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1173#endif 1912#endif
1174#if EV_USE_KQUEUE 1913#if EV_USE_KQUEUE
1175 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1914 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1182#endif 1921#endif
1183#if EV_USE_SELECT 1922#if EV_USE_SELECT
1184 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1923 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1185#endif 1924#endif
1186 1925
1926 ev_prepare_init (&pending_w, pendingcb);
1927
1928#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1187 ev_init (&pipeev, pipecb); 1929 ev_init (&pipe_w, pipecb);
1188 ev_set_priority (&pipeev, EV_MAXPRI); 1930 ev_set_priority (&pipe_w, EV_MAXPRI);
1931#endif
1189 } 1932 }
1190} 1933}
1191 1934
1192static void noinline 1935/* free up a loop structure */
1936void ecb_cold
1193loop_destroy (EV_P) 1937ev_loop_destroy (EV_P)
1194{ 1938{
1195 int i; 1939 int i;
1196 1940
1941#if EV_MULTIPLICITY
1942 /* mimic free (0) */
1943 if (!EV_A)
1944 return;
1945#endif
1946
1947#if EV_CLEANUP_ENABLE
1948 /* queue cleanup watchers (and execute them) */
1949 if (expect_false (cleanupcnt))
1950 {
1951 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1952 EV_INVOKE_PENDING;
1953 }
1954#endif
1955
1956#if EV_CHILD_ENABLE
1957 if (ev_is_active (&childev))
1958 {
1959 ev_ref (EV_A); /* child watcher */
1960 ev_signal_stop (EV_A_ &childev);
1961 }
1962#endif
1963
1197 if (ev_is_active (&pipeev)) 1964 if (ev_is_active (&pipe_w))
1198 { 1965 {
1199 ev_ref (EV_A); /* signal watcher */ 1966 /*ev_ref (EV_A);*/
1200 ev_io_stop (EV_A_ &pipeev); 1967 /*ev_io_stop (EV_A_ &pipe_w);*/
1201 1968
1202#if EV_USE_EVENTFD 1969#if EV_USE_EVENTFD
1203 if (evfd >= 0) 1970 if (evfd >= 0)
1204 close (evfd); 1971 close (evfd);
1205#endif 1972#endif
1206 1973
1207 if (evpipe [0] >= 0) 1974 if (evpipe [0] >= 0)
1208 { 1975 {
1209 close (evpipe [0]); 1976 EV_WIN32_CLOSE_FD (evpipe [0]);
1210 close (evpipe [1]); 1977 EV_WIN32_CLOSE_FD (evpipe [1]);
1211 } 1978 }
1212 } 1979 }
1980
1981#if EV_USE_SIGNALFD
1982 if (ev_is_active (&sigfd_w))
1983 close (sigfd);
1984#endif
1213 1985
1214#if EV_USE_INOTIFY 1986#if EV_USE_INOTIFY
1215 if (fs_fd >= 0) 1987 if (fs_fd >= 0)
1216 close (fs_fd); 1988 close (fs_fd);
1217#endif 1989#endif
1218 1990
1219 if (backend_fd >= 0) 1991 if (backend_fd >= 0)
1220 close (backend_fd); 1992 close (backend_fd);
1221 1993
1994#if EV_USE_IOCP
1995 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1996#endif
1222#if EV_USE_PORT 1997#if EV_USE_PORT
1223 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1998 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1224#endif 1999#endif
1225#if EV_USE_KQUEUE 2000#if EV_USE_KQUEUE
1226 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2001 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1241#if EV_IDLE_ENABLE 2016#if EV_IDLE_ENABLE
1242 array_free (idle, [i]); 2017 array_free (idle, [i]);
1243#endif 2018#endif
1244 } 2019 }
1245 2020
1246 ev_free (anfds); anfdmax = 0; 2021 ev_free (anfds); anfds = 0; anfdmax = 0;
1247 2022
1248 /* have to use the microsoft-never-gets-it-right macro */ 2023 /* have to use the microsoft-never-gets-it-right macro */
2024 array_free (rfeed, EMPTY);
1249 array_free (fdchange, EMPTY); 2025 array_free (fdchange, EMPTY);
1250 array_free (timer, EMPTY); 2026 array_free (timer, EMPTY);
1251#if EV_PERIODIC_ENABLE 2027#if EV_PERIODIC_ENABLE
1252 array_free (periodic, EMPTY); 2028 array_free (periodic, EMPTY);
1253#endif 2029#endif
1254#if EV_FORK_ENABLE 2030#if EV_FORK_ENABLE
1255 array_free (fork, EMPTY); 2031 array_free (fork, EMPTY);
1256#endif 2032#endif
2033#if EV_CLEANUP_ENABLE
2034 array_free (cleanup, EMPTY);
2035#endif
1257 array_free (prepare, EMPTY); 2036 array_free (prepare, EMPTY);
1258 array_free (check, EMPTY); 2037 array_free (check, EMPTY);
1259#if EV_ASYNC_ENABLE 2038#if EV_ASYNC_ENABLE
1260 array_free (async, EMPTY); 2039 array_free (async, EMPTY);
1261#endif 2040#endif
1262 2041
1263 backend = 0; 2042 backend = 0;
1264}
1265 2043
2044#if EV_MULTIPLICITY
2045 if (ev_is_default_loop (EV_A))
2046#endif
2047 ev_default_loop_ptr = 0;
2048#if EV_MULTIPLICITY
2049 else
2050 ev_free (EV_A);
2051#endif
2052}
2053
2054#if EV_USE_INOTIFY
1266void inline_size infy_fork (EV_P); 2055inline_size void infy_fork (EV_P);
2056#endif
1267 2057
1268void inline_size 2058inline_size void
1269loop_fork (EV_P) 2059loop_fork (EV_P)
1270{ 2060{
1271#if EV_USE_PORT 2061#if EV_USE_PORT
1272 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 2062 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1273#endif 2063#endif
… …
1279#endif 2069#endif
1280#if EV_USE_INOTIFY 2070#if EV_USE_INOTIFY
1281 infy_fork (EV_A); 2071 infy_fork (EV_A);
1282#endif 2072#endif
1283 2073
1284 if (ev_is_active (&pipeev)) 2074 if (ev_is_active (&pipe_w))
1285 { 2075 {
1286 /* this "locks" the handlers against writing to the pipe */ 2076 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1287 /* while we modify the fd vars */
1288 gotsig = 1;
1289#if EV_ASYNC_ENABLE
1290 gotasync = 1;
1291#endif
1292 2077
1293 ev_ref (EV_A); 2078 ev_ref (EV_A);
1294 ev_io_stop (EV_A_ &pipeev); 2079 ev_io_stop (EV_A_ &pipe_w);
1295 2080
1296#if EV_USE_EVENTFD 2081#if EV_USE_EVENTFD
1297 if (evfd >= 0) 2082 if (evfd >= 0)
1298 close (evfd); 2083 close (evfd);
1299#endif 2084#endif
1300 2085
1301 if (evpipe [0] >= 0) 2086 if (evpipe [0] >= 0)
1302 { 2087 {
1303 close (evpipe [0]); 2088 EV_WIN32_CLOSE_FD (evpipe [0]);
1304 close (evpipe [1]); 2089 EV_WIN32_CLOSE_FD (evpipe [1]);
1305 } 2090 }
1306 2091
2092#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1307 evpipe_init (EV_A); 2093 evpipe_init (EV_A);
1308 /* now iterate over everything, in case we missed something */ 2094 /* now iterate over everything, in case we missed something */
1309 pipecb (EV_A_ &pipeev, EV_READ); 2095 pipecb (EV_A_ &pipe_w, EV_READ);
2096#endif
1310 } 2097 }
1311 2098
1312 postfork = 0; 2099 postfork = 0;
1313} 2100}
1314 2101
1315#if EV_MULTIPLICITY 2102#if EV_MULTIPLICITY
2103
1316struct ev_loop * 2104struct ev_loop * ecb_cold
1317ev_loop_new (unsigned int flags) 2105ev_loop_new (unsigned int flags)
1318{ 2106{
1319 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2107 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1320 2108
1321 memset (loop, 0, sizeof (struct ev_loop)); 2109 memset (EV_A, 0, sizeof (struct ev_loop));
1322
1323 loop_init (EV_A_ flags); 2110 loop_init (EV_A_ flags);
1324 2111
1325 if (ev_backend (EV_A)) 2112 if (ev_backend (EV_A))
1326 return loop; 2113 return EV_A;
1327 2114
2115 ev_free (EV_A);
1328 return 0; 2116 return 0;
1329} 2117}
1330 2118
1331void 2119#endif /* multiplicity */
1332ev_loop_destroy (EV_P)
1333{
1334 loop_destroy (EV_A);
1335 ev_free (loop);
1336}
1337 2120
1338void 2121#if EV_VERIFY
1339ev_loop_fork (EV_P) 2122static void noinline ecb_cold
2123verify_watcher (EV_P_ W w)
1340{ 2124{
1341 postfork = 1; /* must be in line with ev_default_fork */ 2125 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1342}
1343 2126
2127 if (w->pending)
2128 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2129}
2130
2131static void noinline ecb_cold
2132verify_heap (EV_P_ ANHE *heap, int N)
2133{
2134 int i;
2135
2136 for (i = HEAP0; i < N + HEAP0; ++i)
2137 {
2138 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
2139 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
2140 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
2141
2142 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2143 }
2144}
2145
2146static void noinline ecb_cold
2147array_verify (EV_P_ W *ws, int cnt)
2148{
2149 while (cnt--)
2150 {
2151 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
2152 verify_watcher (EV_A_ ws [cnt]);
2153 }
2154}
2155#endif
2156
2157#if EV_FEATURE_API
2158void ecb_cold
2159ev_verify (EV_P)
2160{
2161#if EV_VERIFY
2162 int i;
2163 WL w;
2164
2165 assert (activecnt >= -1);
2166
2167 assert (fdchangemax >= fdchangecnt);
2168 for (i = 0; i < fdchangecnt; ++i)
2169 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2170
2171 assert (anfdmax >= 0);
2172 for (i = 0; i < anfdmax; ++i)
2173 for (w = anfds [i].head; w; w = w->next)
2174 {
2175 verify_watcher (EV_A_ (W)w);
2176 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2177 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2178 }
2179
2180 assert (timermax >= timercnt);
2181 verify_heap (EV_A_ timers, timercnt);
2182
2183#if EV_PERIODIC_ENABLE
2184 assert (periodicmax >= periodiccnt);
2185 verify_heap (EV_A_ periodics, periodiccnt);
2186#endif
2187
2188 for (i = NUMPRI; i--; )
2189 {
2190 assert (pendingmax [i] >= pendingcnt [i]);
2191#if EV_IDLE_ENABLE
2192 assert (idleall >= 0);
2193 assert (idlemax [i] >= idlecnt [i]);
2194 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
2195#endif
2196 }
2197
2198#if EV_FORK_ENABLE
2199 assert (forkmax >= forkcnt);
2200 array_verify (EV_A_ (W *)forks, forkcnt);
2201#endif
2202
2203#if EV_CLEANUP_ENABLE
2204 assert (cleanupmax >= cleanupcnt);
2205 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2206#endif
2207
2208#if EV_ASYNC_ENABLE
2209 assert (asyncmax >= asynccnt);
2210 array_verify (EV_A_ (W *)asyncs, asynccnt);
2211#endif
2212
2213#if EV_PREPARE_ENABLE
2214 assert (preparemax >= preparecnt);
2215 array_verify (EV_A_ (W *)prepares, preparecnt);
2216#endif
2217
2218#if EV_CHECK_ENABLE
2219 assert (checkmax >= checkcnt);
2220 array_verify (EV_A_ (W *)checks, checkcnt);
2221#endif
2222
2223# if 0
2224#if EV_CHILD_ENABLE
2225 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
2226 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2227#endif
2228# endif
2229#endif
2230}
1344#endif 2231#endif
1345 2232
1346#if EV_MULTIPLICITY 2233#if EV_MULTIPLICITY
1347struct ev_loop * 2234struct ev_loop * ecb_cold
1348ev_default_loop_init (unsigned int flags)
1349#else 2235#else
1350int 2236int
2237#endif
1351ev_default_loop (unsigned int flags) 2238ev_default_loop (unsigned int flags)
1352#endif
1353{ 2239{
1354 if (!ev_default_loop_ptr) 2240 if (!ev_default_loop_ptr)
1355 { 2241 {
1356#if EV_MULTIPLICITY 2242#if EV_MULTIPLICITY
1357 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2243 EV_P = ev_default_loop_ptr = &default_loop_struct;
1358#else 2244#else
1359 ev_default_loop_ptr = 1; 2245 ev_default_loop_ptr = 1;
1360#endif 2246#endif
1361 2247
1362 loop_init (EV_A_ flags); 2248 loop_init (EV_A_ flags);
1363 2249
1364 if (ev_backend (EV_A)) 2250 if (ev_backend (EV_A))
1365 { 2251 {
1366#ifndef _WIN32 2252#if EV_CHILD_ENABLE
1367 ev_signal_init (&childev, childcb, SIGCHLD); 2253 ev_signal_init (&childev, childcb, SIGCHLD);
1368 ev_set_priority (&childev, EV_MAXPRI); 2254 ev_set_priority (&childev, EV_MAXPRI);
1369 ev_signal_start (EV_A_ &childev); 2255 ev_signal_start (EV_A_ &childev);
1370 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2256 ev_unref (EV_A); /* child watcher should not keep loop alive */
1371#endif 2257#endif
… …
1376 2262
1377 return ev_default_loop_ptr; 2263 return ev_default_loop_ptr;
1378} 2264}
1379 2265
1380void 2266void
1381ev_default_destroy (void) 2267ev_loop_fork (EV_P)
1382{ 2268{
1383#if EV_MULTIPLICITY
1384 struct ev_loop *loop = ev_default_loop_ptr;
1385#endif
1386
1387#ifndef _WIN32
1388 ev_ref (EV_A); /* child watcher */
1389 ev_signal_stop (EV_A_ &childev);
1390#endif
1391
1392 loop_destroy (EV_A);
1393}
1394
1395void
1396ev_default_fork (void)
1397{
1398#if EV_MULTIPLICITY
1399 struct ev_loop *loop = ev_default_loop_ptr;
1400#endif
1401
1402 if (backend)
1403 postfork = 1; /* must be in line with ev_loop_fork */ 2269 postfork = 1; /* must be in line with ev_default_fork */
1404} 2270}
1405 2271
1406/*****************************************************************************/ 2272/*****************************************************************************/
1407 2273
1408void 2274void
1409ev_invoke (EV_P_ void *w, int revents) 2275ev_invoke (EV_P_ void *w, int revents)
1410{ 2276{
1411 EV_CB_INVOKE ((W)w, revents); 2277 EV_CB_INVOKE ((W)w, revents);
1412} 2278}
1413 2279
1414void inline_speed 2280unsigned int
1415call_pending (EV_P) 2281ev_pending_count (EV_P)
2282{
2283 int pri;
2284 unsigned int count = 0;
2285
2286 for (pri = NUMPRI; pri--; )
2287 count += pendingcnt [pri];
2288
2289 return count;
2290}
2291
2292void noinline
2293ev_invoke_pending (EV_P)
1416{ 2294{
1417 int pri; 2295 int pri;
1418 2296
1419 for (pri = NUMPRI; pri--; ) 2297 for (pri = NUMPRI; pri--; )
1420 while (pendingcnt [pri]) 2298 while (pendingcnt [pri])
1421 { 2299 {
1422 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2300 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1423 2301
1424 if (expect_true (p->w))
1425 {
1426 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1427
1428 p->w->pending = 0; 2302 p->w->pending = 0;
1429 EV_CB_INVOKE (p->w, p->events); 2303 EV_CB_INVOKE (p->w, p->events);
1430 } 2304 EV_FREQUENT_CHECK;
1431 } 2305 }
1432} 2306}
1433 2307
1434void inline_size
1435timers_reify (EV_P)
1436{
1437 while (timercnt && ((WT)timers [0])->at <= mn_now)
1438 {
1439 ev_timer *w = (ev_timer *)timers [0];
1440
1441 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1442
1443 /* first reschedule or stop timer */
1444 if (w->repeat)
1445 {
1446 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1447
1448 ((WT)w)->at += w->repeat;
1449 if (((WT)w)->at < mn_now)
1450 ((WT)w)->at = mn_now;
1451
1452 downheap (timers, timercnt, 0);
1453 }
1454 else
1455 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1456
1457 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1458 }
1459}
1460
1461#if EV_PERIODIC_ENABLE
1462void inline_size
1463periodics_reify (EV_P)
1464{
1465 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1466 {
1467 ev_periodic *w = (ev_periodic *)periodics [0];
1468
1469 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1470
1471 /* first reschedule or stop timer */
1472 if (w->reschedule_cb)
1473 {
1474 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1475 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1476 downheap (periodics, periodiccnt, 0);
1477 }
1478 else if (w->interval)
1479 {
1480 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1481 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1482 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1483 downheap (periodics, periodiccnt, 0);
1484 }
1485 else
1486 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1487
1488 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1489 }
1490}
1491
1492static void noinline
1493periodics_reschedule (EV_P)
1494{
1495 int i;
1496
1497 /* adjust periodics after time jump */
1498 for (i = 0; i < periodiccnt; ++i)
1499 {
1500 ev_periodic *w = (ev_periodic *)periodics [i];
1501
1502 if (w->reschedule_cb)
1503 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1504 else if (w->interval)
1505 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1506 }
1507
1508 /* now rebuild the heap */
1509 for (i = periodiccnt >> 1; i--; )
1510 downheap (periodics, periodiccnt, i);
1511}
1512#endif
1513
1514#if EV_IDLE_ENABLE 2308#if EV_IDLE_ENABLE
1515void inline_size 2309/* make idle watchers pending. this handles the "call-idle */
2310/* only when higher priorities are idle" logic */
2311inline_size void
1516idle_reify (EV_P) 2312idle_reify (EV_P)
1517{ 2313{
1518 if (expect_false (idleall)) 2314 if (expect_false (idleall))
1519 { 2315 {
1520 int pri; 2316 int pri;
… …
1532 } 2328 }
1533 } 2329 }
1534} 2330}
1535#endif 2331#endif
1536 2332
1537void inline_speed 2333/* make timers pending */
2334inline_size void
2335timers_reify (EV_P)
2336{
2337 EV_FREQUENT_CHECK;
2338
2339 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
2340 {
2341 do
2342 {
2343 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2344
2345 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2346
2347 /* first reschedule or stop timer */
2348 if (w->repeat)
2349 {
2350 ev_at (w) += w->repeat;
2351 if (ev_at (w) < mn_now)
2352 ev_at (w) = mn_now;
2353
2354 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
2355
2356 ANHE_at_cache (timers [HEAP0]);
2357 downheap (timers, timercnt, HEAP0);
2358 }
2359 else
2360 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2361
2362 EV_FREQUENT_CHECK;
2363 feed_reverse (EV_A_ (W)w);
2364 }
2365 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2366
2367 feed_reverse_done (EV_A_ EV_TIMER);
2368 }
2369}
2370
2371#if EV_PERIODIC_ENABLE
2372
2373static void noinline
2374periodic_recalc (EV_P_ ev_periodic *w)
2375{
2376 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2377 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2378
2379 /* the above almost always errs on the low side */
2380 while (at <= ev_rt_now)
2381 {
2382 ev_tstamp nat = at + w->interval;
2383
2384 /* when resolution fails us, we use ev_rt_now */
2385 if (expect_false (nat == at))
2386 {
2387 at = ev_rt_now;
2388 break;
2389 }
2390
2391 at = nat;
2392 }
2393
2394 ev_at (w) = at;
2395}
2396
2397/* make periodics pending */
2398inline_size void
2399periodics_reify (EV_P)
2400{
2401 EV_FREQUENT_CHECK;
2402
2403 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2404 {
2405 int feed_count = 0;
2406
2407 do
2408 {
2409 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2410
2411 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2412
2413 /* first reschedule or stop timer */
2414 if (w->reschedule_cb)
2415 {
2416 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2417
2418 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
2419
2420 ANHE_at_cache (periodics [HEAP0]);
2421 downheap (periodics, periodiccnt, HEAP0);
2422 }
2423 else if (w->interval)
2424 {
2425 periodic_recalc (EV_A_ w);
2426 ANHE_at_cache (periodics [HEAP0]);
2427 downheap (periodics, periodiccnt, HEAP0);
2428 }
2429 else
2430 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2431
2432 EV_FREQUENT_CHECK;
2433 feed_reverse (EV_A_ (W)w);
2434 }
2435 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
2436
2437 feed_reverse_done (EV_A_ EV_PERIODIC);
2438 }
2439}
2440
2441/* simply recalculate all periodics */
2442/* TODO: maybe ensure that at least one event happens when jumping forward? */
2443static void noinline ecb_cold
2444periodics_reschedule (EV_P)
2445{
2446 int i;
2447
2448 /* adjust periodics after time jump */
2449 for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
2450 {
2451 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2452
2453 if (w->reschedule_cb)
2454 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2455 else if (w->interval)
2456 periodic_recalc (EV_A_ w);
2457
2458 ANHE_at_cache (periodics [i]);
2459 }
2460
2461 reheap (periodics, periodiccnt);
2462}
2463#endif
2464
2465/* adjust all timers by a given offset */
2466static void noinline ecb_cold
2467timers_reschedule (EV_P_ ev_tstamp adjust)
2468{
2469 int i;
2470
2471 for (i = 0; i < timercnt; ++i)
2472 {
2473 ANHE *he = timers + i + HEAP0;
2474 ANHE_w (*he)->at += adjust;
2475 ANHE_at_cache (*he);
2476 }
2477}
2478
2479/* fetch new monotonic and realtime times from the kernel */
2480/* also detect if there was a timejump, and act accordingly */
2481inline_speed void
1538time_update (EV_P_ ev_tstamp max_block) 2482time_update (EV_P_ ev_tstamp max_block)
1539{ 2483{
1540 int i;
1541
1542#if EV_USE_MONOTONIC 2484#if EV_USE_MONOTONIC
1543 if (expect_true (have_monotonic)) 2485 if (expect_true (have_monotonic))
1544 { 2486 {
2487 int i;
1545 ev_tstamp odiff = rtmn_diff; 2488 ev_tstamp odiff = rtmn_diff;
1546 2489
1547 mn_now = get_clock (); 2490 mn_now = get_clock ();
1548 2491
1549 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2492 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1565 * doesn't hurt either as we only do this on time-jumps or 2508 * doesn't hurt either as we only do this on time-jumps or
1566 * in the unlikely event of having been preempted here. 2509 * in the unlikely event of having been preempted here.
1567 */ 2510 */
1568 for (i = 4; --i; ) 2511 for (i = 4; --i; )
1569 { 2512 {
2513 ev_tstamp diff;
1570 rtmn_diff = ev_rt_now - mn_now; 2514 rtmn_diff = ev_rt_now - mn_now;
1571 2515
1572 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 2516 diff = odiff - rtmn_diff;
2517
2518 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1573 return; /* all is well */ 2519 return; /* all is well */
1574 2520
1575 ev_rt_now = ev_time (); 2521 ev_rt_now = ev_time ();
1576 mn_now = get_clock (); 2522 mn_now = get_clock ();
1577 now_floor = mn_now; 2523 now_floor = mn_now;
1578 } 2524 }
1579 2525
2526 /* no timer adjustment, as the monotonic clock doesn't jump */
2527 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1580# if EV_PERIODIC_ENABLE 2528# if EV_PERIODIC_ENABLE
1581 periodics_reschedule (EV_A); 2529 periodics_reschedule (EV_A);
1582# endif 2530# endif
1583 /* no timer adjustment, as the monotonic clock doesn't jump */
1584 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1585 } 2531 }
1586 else 2532 else
1587#endif 2533#endif
1588 { 2534 {
1589 ev_rt_now = ev_time (); 2535 ev_rt_now = ev_time ();
1590 2536
1591 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2537 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1592 { 2538 {
2539 /* adjust timers. this is easy, as the offset is the same for all of them */
2540 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1593#if EV_PERIODIC_ENABLE 2541#if EV_PERIODIC_ENABLE
1594 periodics_reschedule (EV_A); 2542 periodics_reschedule (EV_A);
1595#endif 2543#endif
1596 /* adjust timers. this is easy, as the offset is the same for all of them */
1597 for (i = 0; i < timercnt; ++i)
1598 ((WT)timers [i])->at += ev_rt_now - mn_now;
1599 } 2544 }
1600 2545
1601 mn_now = ev_rt_now; 2546 mn_now = ev_rt_now;
1602 } 2547 }
1603} 2548}
1604 2549
1605void 2550void
1606ev_ref (EV_P)
1607{
1608 ++activecnt;
1609}
1610
1611void
1612ev_unref (EV_P)
1613{
1614 --activecnt;
1615}
1616
1617static int loop_done;
1618
1619void
1620ev_loop (EV_P_ int flags) 2551ev_run (EV_P_ int flags)
1621{ 2552{
2553#if EV_FEATURE_API
2554 ++loop_depth;
2555#endif
2556
2557 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2558
1622 loop_done = EVUNLOOP_CANCEL; 2559 loop_done = EVBREAK_CANCEL;
1623 2560
1624 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2561 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1625 2562
1626 do 2563 do
1627 { 2564 {
2565#if EV_VERIFY >= 2
2566 ev_verify (EV_A);
2567#endif
2568
1628#ifndef _WIN32 2569#ifndef _WIN32
1629 if (expect_false (curpid)) /* penalise the forking check even more */ 2570 if (expect_false (curpid)) /* penalise the forking check even more */
1630 if (expect_false (getpid () != curpid)) 2571 if (expect_false (getpid () != curpid))
1631 { 2572 {
1632 curpid = getpid (); 2573 curpid = getpid ();
… …
1638 /* we might have forked, so queue fork handlers */ 2579 /* we might have forked, so queue fork handlers */
1639 if (expect_false (postfork)) 2580 if (expect_false (postfork))
1640 if (forkcnt) 2581 if (forkcnt)
1641 { 2582 {
1642 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2583 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1643 call_pending (EV_A); 2584 EV_INVOKE_PENDING;
1644 } 2585 }
1645#endif 2586#endif
1646 2587
2588#if EV_PREPARE_ENABLE
1647 /* queue prepare watchers (and execute them) */ 2589 /* queue prepare watchers (and execute them) */
1648 if (expect_false (preparecnt)) 2590 if (expect_false (preparecnt))
1649 { 2591 {
1650 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2592 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1651 call_pending (EV_A); 2593 EV_INVOKE_PENDING;
1652 } 2594 }
2595#endif
1653 2596
1654 if (expect_false (!activecnt)) 2597 if (expect_false (loop_done))
1655 break; 2598 break;
1656 2599
1657 /* we might have forked, so reify kernel state if necessary */ 2600 /* we might have forked, so reify kernel state if necessary */
1658 if (expect_false (postfork)) 2601 if (expect_false (postfork))
1659 loop_fork (EV_A); 2602 loop_fork (EV_A);
… …
1664 /* calculate blocking time */ 2607 /* calculate blocking time */
1665 { 2608 {
1666 ev_tstamp waittime = 0.; 2609 ev_tstamp waittime = 0.;
1667 ev_tstamp sleeptime = 0.; 2610 ev_tstamp sleeptime = 0.;
1668 2611
2612 /* remember old timestamp for io_blocktime calculation */
2613 ev_tstamp prev_mn_now = mn_now;
2614
2615 /* update time to cancel out callback processing overhead */
2616 time_update (EV_A_ 1e100);
2617
2618 /* from now on, we want a pipe-wake-up */
2619 pipe_write_wanted = 1;
2620
2621 ECB_MEMORY_FENCE;
2622
1669 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2623 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
1670 { 2624 {
1671 /* update time to cancel out callback processing overhead */
1672 time_update (EV_A_ 1e100);
1673
1674 waittime = MAX_BLOCKTIME; 2625 waittime = MAX_BLOCKTIME;
1675 2626
1676 if (timercnt) 2627 if (timercnt)
1677 { 2628 {
1678 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; 2629 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
1679 if (waittime > to) waittime = to; 2630 if (waittime > to) waittime = to;
1680 } 2631 }
1681 2632
1682#if EV_PERIODIC_ENABLE 2633#if EV_PERIODIC_ENABLE
1683 if (periodiccnt) 2634 if (periodiccnt)
1684 { 2635 {
1685 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; 2636 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
1686 if (waittime > to) waittime = to; 2637 if (waittime > to) waittime = to;
1687 } 2638 }
1688#endif 2639#endif
1689 2640
2641 /* don't let timeouts decrease the waittime below timeout_blocktime */
1690 if (expect_false (waittime < timeout_blocktime)) 2642 if (expect_false (waittime < timeout_blocktime))
1691 waittime = timeout_blocktime; 2643 waittime = timeout_blocktime;
1692 2644
1693 sleeptime = waittime - backend_fudge; 2645 /* at this point, we NEED to wait, so we have to ensure */
2646 /* to pass a minimum nonzero value to the backend */
2647 if (expect_false (waittime < backend_mintime))
2648 waittime = backend_mintime;
1694 2649
2650 /* extra check because io_blocktime is commonly 0 */
1695 if (expect_true (sleeptime > io_blocktime)) 2651 if (expect_false (io_blocktime))
1696 sleeptime = io_blocktime;
1697
1698 if (sleeptime)
1699 { 2652 {
2653 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2654
2655 if (sleeptime > waittime - backend_mintime)
2656 sleeptime = waittime - backend_mintime;
2657
2658 if (expect_true (sleeptime > 0.))
2659 {
1700 ev_sleep (sleeptime); 2660 ev_sleep (sleeptime);
1701 waittime -= sleeptime; 2661 waittime -= sleeptime;
2662 }
1702 } 2663 }
1703 } 2664 }
1704 2665
2666#if EV_FEATURE_API
1705 ++loop_count; 2667 ++loop_count;
2668#endif
2669 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
1706 backend_poll (EV_A_ waittime); 2670 backend_poll (EV_A_ waittime);
2671 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2672
2673 pipe_write_wanted = 0;
2674
2675 if (pipe_write_skipped)
2676 {
2677 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
2678 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2679 }
2680
1707 2681
1708 /* update ev_rt_now, do magic */ 2682 /* update ev_rt_now, do magic */
1709 time_update (EV_A_ waittime + sleeptime); 2683 time_update (EV_A_ waittime + sleeptime);
1710 } 2684 }
1711 2685
… …
1718#if EV_IDLE_ENABLE 2692#if EV_IDLE_ENABLE
1719 /* queue idle watchers unless other events are pending */ 2693 /* queue idle watchers unless other events are pending */
1720 idle_reify (EV_A); 2694 idle_reify (EV_A);
1721#endif 2695#endif
1722 2696
2697#if EV_CHECK_ENABLE
1723 /* queue check watchers, to be executed first */ 2698 /* queue check watchers, to be executed first */
1724 if (expect_false (checkcnt)) 2699 if (expect_false (checkcnt))
1725 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2700 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2701#endif
1726 2702
1727 call_pending (EV_A); 2703 EV_INVOKE_PENDING;
1728 } 2704 }
1729 while (expect_true ( 2705 while (expect_true (
1730 activecnt 2706 activecnt
1731 && !loop_done 2707 && !loop_done
1732 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2708 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
1733 )); 2709 ));
1734 2710
1735 if (loop_done == EVUNLOOP_ONE) 2711 if (loop_done == EVBREAK_ONE)
1736 loop_done = EVUNLOOP_CANCEL; 2712 loop_done = EVBREAK_CANCEL;
2713
2714#if EV_FEATURE_API
2715 --loop_depth;
2716#endif
1737} 2717}
1738 2718
1739void 2719void
1740ev_unloop (EV_P_ int how) 2720ev_break (EV_P_ int how)
1741{ 2721{
1742 loop_done = how; 2722 loop_done = how;
1743} 2723}
1744 2724
2725void
2726ev_ref (EV_P)
2727{
2728 ++activecnt;
2729}
2730
2731void
2732ev_unref (EV_P)
2733{
2734 --activecnt;
2735}
2736
2737void
2738ev_now_update (EV_P)
2739{
2740 time_update (EV_A_ 1e100);
2741}
2742
2743void
2744ev_suspend (EV_P)
2745{
2746 ev_now_update (EV_A);
2747}
2748
2749void
2750ev_resume (EV_P)
2751{
2752 ev_tstamp mn_prev = mn_now;
2753
2754 ev_now_update (EV_A);
2755 timers_reschedule (EV_A_ mn_now - mn_prev);
2756#if EV_PERIODIC_ENABLE
2757 /* TODO: really do this? */
2758 periodics_reschedule (EV_A);
2759#endif
2760}
2761
1745/*****************************************************************************/ 2762/*****************************************************************************/
2763/* singly-linked list management, used when the expected list length is short */
1746 2764
1747void inline_size 2765inline_size void
1748wlist_add (WL *head, WL elem) 2766wlist_add (WL *head, WL elem)
1749{ 2767{
1750 elem->next = *head; 2768 elem->next = *head;
1751 *head = elem; 2769 *head = elem;
1752} 2770}
1753 2771
1754void inline_size 2772inline_size void
1755wlist_del (WL *head, WL elem) 2773wlist_del (WL *head, WL elem)
1756{ 2774{
1757 while (*head) 2775 while (*head)
1758 { 2776 {
1759 if (*head == elem) 2777 if (expect_true (*head == elem))
1760 { 2778 {
1761 *head = elem->next; 2779 *head = elem->next;
1762 return; 2780 break;
1763 } 2781 }
1764 2782
1765 head = &(*head)->next; 2783 head = &(*head)->next;
1766 } 2784 }
1767} 2785}
1768 2786
1769void inline_speed 2787/* internal, faster, version of ev_clear_pending */
2788inline_speed void
1770clear_pending (EV_P_ W w) 2789clear_pending (EV_P_ W w)
1771{ 2790{
1772 if (w->pending) 2791 if (w->pending)
1773 { 2792 {
1774 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2793 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1775 w->pending = 0; 2794 w->pending = 0;
1776 } 2795 }
1777} 2796}
1778 2797
1779int 2798int
… …
1783 int pending = w_->pending; 2802 int pending = w_->pending;
1784 2803
1785 if (expect_true (pending)) 2804 if (expect_true (pending))
1786 { 2805 {
1787 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2806 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2807 p->w = (W)&pending_w;
1788 w_->pending = 0; 2808 w_->pending = 0;
1789 p->w = 0;
1790 return p->events; 2809 return p->events;
1791 } 2810 }
1792 else 2811 else
1793 return 0; 2812 return 0;
1794} 2813}
1795 2814
1796void inline_size 2815inline_size void
1797pri_adjust (EV_P_ W w) 2816pri_adjust (EV_P_ W w)
1798{ 2817{
1799 int pri = w->priority; 2818 int pri = ev_priority (w);
1800 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2819 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1801 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2820 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1802 w->priority = pri; 2821 ev_set_priority (w, pri);
1803} 2822}
1804 2823
1805void inline_speed 2824inline_speed void
1806ev_start (EV_P_ W w, int active) 2825ev_start (EV_P_ W w, int active)
1807{ 2826{
1808 pri_adjust (EV_A_ w); 2827 pri_adjust (EV_A_ w);
1809 w->active = active; 2828 w->active = active;
1810 ev_ref (EV_A); 2829 ev_ref (EV_A);
1811} 2830}
1812 2831
1813void inline_size 2832inline_size void
1814ev_stop (EV_P_ W w) 2833ev_stop (EV_P_ W w)
1815{ 2834{
1816 ev_unref (EV_A); 2835 ev_unref (EV_A);
1817 w->active = 0; 2836 w->active = 0;
1818} 2837}
… …
1825 int fd = w->fd; 2844 int fd = w->fd;
1826 2845
1827 if (expect_false (ev_is_active (w))) 2846 if (expect_false (ev_is_active (w)))
1828 return; 2847 return;
1829 2848
1830 assert (("ev_io_start called with negative fd", fd >= 0)); 2849 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2850 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2851
2852 EV_FREQUENT_CHECK;
1831 2853
1832 ev_start (EV_A_ (W)w, 1); 2854 ev_start (EV_A_ (W)w, 1);
1833 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2855 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1834 wlist_add (&anfds[fd].head, (WL)w); 2856 wlist_add (&anfds[fd].head, (WL)w);
1835 2857
1836 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2858 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
1837 w->events &= ~EV_IOFDSET; 2859 w->events &= ~EV__IOFDSET;
2860
2861 EV_FREQUENT_CHECK;
1838} 2862}
1839 2863
1840void noinline 2864void noinline
1841ev_io_stop (EV_P_ ev_io *w) 2865ev_io_stop (EV_P_ ev_io *w)
1842{ 2866{
1843 clear_pending (EV_A_ (W)w); 2867 clear_pending (EV_A_ (W)w);
1844 if (expect_false (!ev_is_active (w))) 2868 if (expect_false (!ev_is_active (w)))
1845 return; 2869 return;
1846 2870
1847 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2871 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2872
2873 EV_FREQUENT_CHECK;
1848 2874
1849 wlist_del (&anfds[w->fd].head, (WL)w); 2875 wlist_del (&anfds[w->fd].head, (WL)w);
1850 ev_stop (EV_A_ (W)w); 2876 ev_stop (EV_A_ (W)w);
1851 2877
1852 fd_change (EV_A_ w->fd, 1); 2878 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2879
2880 EV_FREQUENT_CHECK;
1853} 2881}
1854 2882
1855void noinline 2883void noinline
1856ev_timer_start (EV_P_ ev_timer *w) 2884ev_timer_start (EV_P_ ev_timer *w)
1857{ 2885{
1858 if (expect_false (ev_is_active (w))) 2886 if (expect_false (ev_is_active (w)))
1859 return; 2887 return;
1860 2888
1861 ((WT)w)->at += mn_now; 2889 ev_at (w) += mn_now;
1862 2890
1863 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2891 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1864 2892
2893 EV_FREQUENT_CHECK;
2894
2895 ++timercnt;
1865 ev_start (EV_A_ (W)w, ++timercnt); 2896 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1866 array_needsize (WT, timers, timermax, timercnt, EMPTY2); 2897 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1867 timers [timercnt - 1] = (WT)w; 2898 ANHE_w (timers [ev_active (w)]) = (WT)w;
1868 upheap (timers, timercnt - 1); 2899 ANHE_at_cache (timers [ev_active (w)]);
2900 upheap (timers, ev_active (w));
1869 2901
2902 EV_FREQUENT_CHECK;
2903
1870 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/ 2904 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1871} 2905}
1872 2906
1873void noinline 2907void noinline
1874ev_timer_stop (EV_P_ ev_timer *w) 2908ev_timer_stop (EV_P_ ev_timer *w)
1875{ 2909{
1876 clear_pending (EV_A_ (W)w); 2910 clear_pending (EV_A_ (W)w);
1877 if (expect_false (!ev_is_active (w))) 2911 if (expect_false (!ev_is_active (w)))
1878 return; 2912 return;
1879 2913
1880 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w)); 2914 EV_FREQUENT_CHECK;
1881 2915
1882 { 2916 {
1883 int active = ((W)w)->active; 2917 int active = ev_active (w);
1884 2918
2919 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2920
2921 --timercnt;
2922
1885 if (expect_true (--active < --timercnt)) 2923 if (expect_true (active < timercnt + HEAP0))
1886 { 2924 {
1887 timers [active] = timers [timercnt]; 2925 timers [active] = timers [timercnt + HEAP0];
1888 adjustheap (timers, timercnt, active); 2926 adjustheap (timers, timercnt, active);
1889 } 2927 }
1890 } 2928 }
1891 2929
1892 ((WT)w)->at -= mn_now; 2930 ev_at (w) -= mn_now;
1893 2931
1894 ev_stop (EV_A_ (W)w); 2932 ev_stop (EV_A_ (W)w);
2933
2934 EV_FREQUENT_CHECK;
1895} 2935}
1896 2936
1897void noinline 2937void noinline
1898ev_timer_again (EV_P_ ev_timer *w) 2938ev_timer_again (EV_P_ ev_timer *w)
1899{ 2939{
2940 EV_FREQUENT_CHECK;
2941
1900 if (ev_is_active (w)) 2942 if (ev_is_active (w))
1901 { 2943 {
1902 if (w->repeat) 2944 if (w->repeat)
1903 { 2945 {
1904 ((WT)w)->at = mn_now + w->repeat; 2946 ev_at (w) = mn_now + w->repeat;
2947 ANHE_at_cache (timers [ev_active (w)]);
1905 adjustheap (timers, timercnt, ((W)w)->active - 1); 2948 adjustheap (timers, timercnt, ev_active (w));
1906 } 2949 }
1907 else 2950 else
1908 ev_timer_stop (EV_A_ w); 2951 ev_timer_stop (EV_A_ w);
1909 } 2952 }
1910 else if (w->repeat) 2953 else if (w->repeat)
1911 { 2954 {
1912 w->at = w->repeat; 2955 ev_at (w) = w->repeat;
1913 ev_timer_start (EV_A_ w); 2956 ev_timer_start (EV_A_ w);
1914 } 2957 }
2958
2959 EV_FREQUENT_CHECK;
2960}
2961
2962ev_tstamp
2963ev_timer_remaining (EV_P_ ev_timer *w)
2964{
2965 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
1915} 2966}
1916 2967
1917#if EV_PERIODIC_ENABLE 2968#if EV_PERIODIC_ENABLE
1918void noinline 2969void noinline
1919ev_periodic_start (EV_P_ ev_periodic *w) 2970ev_periodic_start (EV_P_ ev_periodic *w)
1920{ 2971{
1921 if (expect_false (ev_is_active (w))) 2972 if (expect_false (ev_is_active (w)))
1922 return; 2973 return;
1923 2974
1924 if (w->reschedule_cb) 2975 if (w->reschedule_cb)
1925 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 2976 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1926 else if (w->interval) 2977 else if (w->interval)
1927 { 2978 {
1928 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2979 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
1929 /* this formula differs from the one in periodic_reify because we do not always round up */ 2980 periodic_recalc (EV_A_ w);
1930 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1931 } 2981 }
1932 else 2982 else
1933 ((WT)w)->at = w->offset; 2983 ev_at (w) = w->offset;
1934 2984
2985 EV_FREQUENT_CHECK;
2986
2987 ++periodiccnt;
1935 ev_start (EV_A_ (W)w, ++periodiccnt); 2988 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1936 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2); 2989 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1937 periodics [periodiccnt - 1] = (WT)w; 2990 ANHE_w (periodics [ev_active (w)]) = (WT)w;
1938 upheap (periodics, periodiccnt - 1); 2991 ANHE_at_cache (periodics [ev_active (w)]);
2992 upheap (periodics, ev_active (w));
1939 2993
2994 EV_FREQUENT_CHECK;
2995
1940 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/ 2996 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1941} 2997}
1942 2998
1943void noinline 2999void noinline
1944ev_periodic_stop (EV_P_ ev_periodic *w) 3000ev_periodic_stop (EV_P_ ev_periodic *w)
1945{ 3001{
1946 clear_pending (EV_A_ (W)w); 3002 clear_pending (EV_A_ (W)w);
1947 if (expect_false (!ev_is_active (w))) 3003 if (expect_false (!ev_is_active (w)))
1948 return; 3004 return;
1949 3005
1950 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w)); 3006 EV_FREQUENT_CHECK;
1951 3007
1952 { 3008 {
1953 int active = ((W)w)->active; 3009 int active = ev_active (w);
1954 3010
3011 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
3012
3013 --periodiccnt;
3014
1955 if (expect_true (--active < --periodiccnt)) 3015 if (expect_true (active < periodiccnt + HEAP0))
1956 { 3016 {
1957 periodics [active] = periodics [periodiccnt]; 3017 periodics [active] = periodics [periodiccnt + HEAP0];
1958 adjustheap (periodics, periodiccnt, active); 3018 adjustheap (periodics, periodiccnt, active);
1959 } 3019 }
1960 } 3020 }
1961 3021
1962 ev_stop (EV_A_ (W)w); 3022 ev_stop (EV_A_ (W)w);
3023
3024 EV_FREQUENT_CHECK;
1963} 3025}
1964 3026
1965void noinline 3027void noinline
1966ev_periodic_again (EV_P_ ev_periodic *w) 3028ev_periodic_again (EV_P_ ev_periodic *w)
1967{ 3029{
… …
1973 3035
1974#ifndef SA_RESTART 3036#ifndef SA_RESTART
1975# define SA_RESTART 0 3037# define SA_RESTART 0
1976#endif 3038#endif
1977 3039
3040#if EV_SIGNAL_ENABLE
3041
1978void noinline 3042void noinline
1979ev_signal_start (EV_P_ ev_signal *w) 3043ev_signal_start (EV_P_ ev_signal *w)
1980{ 3044{
1981#if EV_MULTIPLICITY
1982 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1983#endif
1984 if (expect_false (ev_is_active (w))) 3045 if (expect_false (ev_is_active (w)))
1985 return; 3046 return;
1986 3047
1987 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 3048 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
1988 3049
1989 evpipe_init (EV_A); 3050#if EV_MULTIPLICITY
3051 assert (("libev: a signal must not be attached to two different loops",
3052 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
1990 3053
3054 signals [w->signum - 1].loop = EV_A;
3055#endif
3056
3057 EV_FREQUENT_CHECK;
3058
3059#if EV_USE_SIGNALFD
3060 if (sigfd == -2)
1991 { 3061 {
1992#ifndef _WIN32 3062 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
1993 sigset_t full, prev; 3063 if (sigfd < 0 && errno == EINVAL)
1994 sigfillset (&full); 3064 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
1995 sigprocmask (SIG_SETMASK, &full, &prev);
1996#endif
1997 3065
1998 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 3066 if (sigfd >= 0)
3067 {
3068 fd_intern (sigfd); /* doing it twice will not hurt */
1999 3069
2000#ifndef _WIN32 3070 sigemptyset (&sigfd_set);
2001 sigprocmask (SIG_SETMASK, &prev, 0); 3071
2002#endif 3072 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3073 ev_set_priority (&sigfd_w, EV_MAXPRI);
3074 ev_io_start (EV_A_ &sigfd_w);
3075 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3076 }
2003 } 3077 }
3078
3079 if (sigfd >= 0)
3080 {
3081 /* TODO: check .head */
3082 sigaddset (&sigfd_set, w->signum);
3083 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3084
3085 signalfd (sigfd, &sigfd_set, 0);
3086 }
3087#endif
2004 3088
2005 ev_start (EV_A_ (W)w, 1); 3089 ev_start (EV_A_ (W)w, 1);
2006 wlist_add (&signals [w->signum - 1].head, (WL)w); 3090 wlist_add (&signals [w->signum - 1].head, (WL)w);
2007 3091
2008 if (!((WL)w)->next) 3092 if (!((WL)w)->next)
3093# if EV_USE_SIGNALFD
3094 if (sigfd < 0) /*TODO*/
3095# endif
2009 { 3096 {
2010#if _WIN32 3097# ifdef _WIN32
3098 evpipe_init (EV_A);
3099
2011 signal (w->signum, ev_sighandler); 3100 signal (w->signum, ev_sighandler);
2012#else 3101# else
2013 struct sigaction sa; 3102 struct sigaction sa;
3103
3104 evpipe_init (EV_A);
3105
2014 sa.sa_handler = ev_sighandler; 3106 sa.sa_handler = ev_sighandler;
2015 sigfillset (&sa.sa_mask); 3107 sigfillset (&sa.sa_mask);
2016 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3108 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2017 sigaction (w->signum, &sa, 0); 3109 sigaction (w->signum, &sa, 0);
3110
3111 if (origflags & EVFLAG_NOSIGMASK)
3112 {
3113 sigemptyset (&sa.sa_mask);
3114 sigaddset (&sa.sa_mask, w->signum);
3115 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3116 }
2018#endif 3117#endif
2019 } 3118 }
3119
3120 EV_FREQUENT_CHECK;
2020} 3121}
2021 3122
2022void noinline 3123void noinline
2023ev_signal_stop (EV_P_ ev_signal *w) 3124ev_signal_stop (EV_P_ ev_signal *w)
2024{ 3125{
2025 clear_pending (EV_A_ (W)w); 3126 clear_pending (EV_A_ (W)w);
2026 if (expect_false (!ev_is_active (w))) 3127 if (expect_false (!ev_is_active (w)))
2027 return; 3128 return;
2028 3129
3130 EV_FREQUENT_CHECK;
3131
2029 wlist_del (&signals [w->signum - 1].head, (WL)w); 3132 wlist_del (&signals [w->signum - 1].head, (WL)w);
2030 ev_stop (EV_A_ (W)w); 3133 ev_stop (EV_A_ (W)w);
2031 3134
2032 if (!signals [w->signum - 1].head) 3135 if (!signals [w->signum - 1].head)
3136 {
3137#if EV_MULTIPLICITY
3138 signals [w->signum - 1].loop = 0; /* unattach from signal */
3139#endif
3140#if EV_USE_SIGNALFD
3141 if (sigfd >= 0)
3142 {
3143 sigset_t ss;
3144
3145 sigemptyset (&ss);
3146 sigaddset (&ss, w->signum);
3147 sigdelset (&sigfd_set, w->signum);
3148
3149 signalfd (sigfd, &sigfd_set, 0);
3150 sigprocmask (SIG_UNBLOCK, &ss, 0);
3151 }
3152 else
3153#endif
2033 signal (w->signum, SIG_DFL); 3154 signal (w->signum, SIG_DFL);
3155 }
3156
3157 EV_FREQUENT_CHECK;
2034} 3158}
3159
3160#endif
3161
3162#if EV_CHILD_ENABLE
2035 3163
2036void 3164void
2037ev_child_start (EV_P_ ev_child *w) 3165ev_child_start (EV_P_ ev_child *w)
2038{ 3166{
2039#if EV_MULTIPLICITY 3167#if EV_MULTIPLICITY
2040 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3168 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2041#endif 3169#endif
2042 if (expect_false (ev_is_active (w))) 3170 if (expect_false (ev_is_active (w)))
2043 return; 3171 return;
2044 3172
3173 EV_FREQUENT_CHECK;
3174
2045 ev_start (EV_A_ (W)w, 1); 3175 ev_start (EV_A_ (W)w, 1);
2046 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3176 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
3177
3178 EV_FREQUENT_CHECK;
2047} 3179}
2048 3180
2049void 3181void
2050ev_child_stop (EV_P_ ev_child *w) 3182ev_child_stop (EV_P_ ev_child *w)
2051{ 3183{
2052 clear_pending (EV_A_ (W)w); 3184 clear_pending (EV_A_ (W)w);
2053 if (expect_false (!ev_is_active (w))) 3185 if (expect_false (!ev_is_active (w)))
2054 return; 3186 return;
2055 3187
3188 EV_FREQUENT_CHECK;
3189
2056 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3190 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2057 ev_stop (EV_A_ (W)w); 3191 ev_stop (EV_A_ (W)w);
3192
3193 EV_FREQUENT_CHECK;
2058} 3194}
3195
3196#endif
2059 3197
2060#if EV_STAT_ENABLE 3198#if EV_STAT_ENABLE
2061 3199
2062# ifdef _WIN32 3200# ifdef _WIN32
2063# undef lstat 3201# undef lstat
2064# define lstat(a,b) _stati64 (a,b) 3202# define lstat(a,b) _stati64 (a,b)
2065# endif 3203# endif
2066 3204
2067#define DEF_STAT_INTERVAL 5.0074891 3205#define DEF_STAT_INTERVAL 5.0074891
3206#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2068#define MIN_STAT_INTERVAL 0.1074891 3207#define MIN_STAT_INTERVAL 0.1074891
2069 3208
2070static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3209static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2071 3210
2072#if EV_USE_INOTIFY 3211#if EV_USE_INOTIFY
2073# define EV_INOTIFY_BUFSIZE 8192 3212
3213/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3214# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2074 3215
2075static void noinline 3216static void noinline
2076infy_add (EV_P_ ev_stat *w) 3217infy_add (EV_P_ ev_stat *w)
2077{ 3218{
2078 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); 3219 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);
2079 3220
2080 if (w->wd < 0) 3221 if (w->wd >= 0)
3222 {
3223 struct statfs sfs;
3224
3225 /* now local changes will be tracked by inotify, but remote changes won't */
3226 /* unless the filesystem is known to be local, we therefore still poll */
3227 /* also do poll on <2.6.25, but with normal frequency */
3228
3229 if (!fs_2625)
3230 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3231 else if (!statfs (w->path, &sfs)
3232 && (sfs.f_type == 0x1373 /* devfs */
3233 || sfs.f_type == 0xEF53 /* ext2/3 */
3234 || sfs.f_type == 0x3153464a /* jfs */
3235 || sfs.f_type == 0x52654973 /* reiser3 */
3236 || sfs.f_type == 0x01021994 /* tempfs */
3237 || sfs.f_type == 0x58465342 /* xfs */))
3238 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3239 else
3240 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2081 { 3241 }
2082 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 3242 else
3243 {
3244 /* can't use inotify, continue to stat */
3245 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2083 3246
2084 /* monitor some parent directory for speedup hints */ 3247 /* if path is not there, monitor some parent directory for speedup hints */
3248 /* note that exceeding the hardcoded path limit is not a correctness issue, */
3249 /* but an efficiency issue only */
2085 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3250 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2086 { 3251 {
2087 char path [4096]; 3252 char path [4096];
2088 strcpy (path, w->path); 3253 strcpy (path, w->path);
2089 3254
… …
2092 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 3257 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2093 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 3258 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2094 3259
2095 char *pend = strrchr (path, '/'); 3260 char *pend = strrchr (path, '/');
2096 3261
2097 if (!pend) 3262 if (!pend || pend == path)
2098 break; /* whoops, no '/', complain to your admin */ 3263 break;
2099 3264
2100 *pend = 0; 3265 *pend = 0;
2101 w->wd = inotify_add_watch (fs_fd, path, mask); 3266 w->wd = inotify_add_watch (fs_fd, path, mask);
2102 } 3267 }
2103 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3268 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2104 } 3269 }
2105 } 3270 }
2106 else
2107 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2108 3271
2109 if (w->wd >= 0) 3272 if (w->wd >= 0)
2110 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3273 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
3274
3275 /* now re-arm timer, if required */
3276 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3277 ev_timer_again (EV_A_ &w->timer);
3278 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2111} 3279}
2112 3280
2113static void noinline 3281static void noinline
2114infy_del (EV_P_ ev_stat *w) 3282infy_del (EV_P_ ev_stat *w)
2115{ 3283{
… …
2118 3286
2119 if (wd < 0) 3287 if (wd < 0)
2120 return; 3288 return;
2121 3289
2122 w->wd = -2; 3290 w->wd = -2;
2123 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3291 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2124 wlist_del (&fs_hash [slot].head, (WL)w); 3292 wlist_del (&fs_hash [slot].head, (WL)w);
2125 3293
2126 /* remove this watcher, if others are watching it, they will rearm */ 3294 /* remove this watcher, if others are watching it, they will rearm */
2127 inotify_rm_watch (fs_fd, wd); 3295 inotify_rm_watch (fs_fd, wd);
2128} 3296}
2129 3297
2130static void noinline 3298static void noinline
2131infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3299infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2132{ 3300{
2133 if (slot < 0) 3301 if (slot < 0)
2134 /* overflow, need to check for all hahs slots */ 3302 /* overflow, need to check for all hash slots */
2135 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3303 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2136 infy_wd (EV_A_ slot, wd, ev); 3304 infy_wd (EV_A_ slot, wd, ev);
2137 else 3305 else
2138 { 3306 {
2139 WL w_; 3307 WL w_;
2140 3308
2141 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3309 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2142 { 3310 {
2143 ev_stat *w = (ev_stat *)w_; 3311 ev_stat *w = (ev_stat *)w_;
2144 w_ = w_->next; /* lets us remove this watcher and all before it */ 3312 w_ = w_->next; /* lets us remove this watcher and all before it */
2145 3313
2146 if (w->wd == wd || wd == -1) 3314 if (w->wd == wd || wd == -1)
2147 { 3315 {
2148 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3316 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2149 { 3317 {
3318 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2150 w->wd = -1; 3319 w->wd = -1;
2151 infy_add (EV_A_ w); /* re-add, no matter what */ 3320 infy_add (EV_A_ w); /* re-add, no matter what */
2152 } 3321 }
2153 3322
2154 stat_timer_cb (EV_A_ &w->timer, 0); 3323 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2159 3328
2160static void 3329static void
2161infy_cb (EV_P_ ev_io *w, int revents) 3330infy_cb (EV_P_ ev_io *w, int revents)
2162{ 3331{
2163 char buf [EV_INOTIFY_BUFSIZE]; 3332 char buf [EV_INOTIFY_BUFSIZE];
2164 struct inotify_event *ev = (struct inotify_event *)buf;
2165 int ofs; 3333 int ofs;
2166 int len = read (fs_fd, buf, sizeof (buf)); 3334 int len = read (fs_fd, buf, sizeof (buf));
2167 3335
2168 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3336 for (ofs = 0; ofs < len; )
3337 {
3338 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2169 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3339 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3340 ofs += sizeof (struct inotify_event) + ev->len;
3341 }
2170} 3342}
2171 3343
2172void inline_size 3344inline_size void ecb_cold
3345ev_check_2625 (EV_P)
3346{
3347 /* kernels < 2.6.25 are borked
3348 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3349 */
3350 if (ev_linux_version () < 0x020619)
3351 return;
3352
3353 fs_2625 = 1;
3354}
3355
3356inline_size int
3357infy_newfd (void)
3358{
3359#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3360 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3361 if (fd >= 0)
3362 return fd;
3363#endif
3364 return inotify_init ();
3365}
3366
3367inline_size void
2173infy_init (EV_P) 3368infy_init (EV_P)
2174{ 3369{
2175 if (fs_fd != -2) 3370 if (fs_fd != -2)
2176 return; 3371 return;
2177 3372
3373 fs_fd = -1;
3374
3375 ev_check_2625 (EV_A);
3376
2178 fs_fd = inotify_init (); 3377 fs_fd = infy_newfd ();
2179 3378
2180 if (fs_fd >= 0) 3379 if (fs_fd >= 0)
2181 { 3380 {
3381 fd_intern (fs_fd);
2182 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3382 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2183 ev_set_priority (&fs_w, EV_MAXPRI); 3383 ev_set_priority (&fs_w, EV_MAXPRI);
2184 ev_io_start (EV_A_ &fs_w); 3384 ev_io_start (EV_A_ &fs_w);
3385 ev_unref (EV_A);
2185 } 3386 }
2186} 3387}
2187 3388
2188void inline_size 3389inline_size void
2189infy_fork (EV_P) 3390infy_fork (EV_P)
2190{ 3391{
2191 int slot; 3392 int slot;
2192 3393
2193 if (fs_fd < 0) 3394 if (fs_fd < 0)
2194 return; 3395 return;
2195 3396
3397 ev_ref (EV_A);
3398 ev_io_stop (EV_A_ &fs_w);
2196 close (fs_fd); 3399 close (fs_fd);
2197 fs_fd = inotify_init (); 3400 fs_fd = infy_newfd ();
2198 3401
3402 if (fs_fd >= 0)
3403 {
3404 fd_intern (fs_fd);
3405 ev_io_set (&fs_w, fs_fd, EV_READ);
3406 ev_io_start (EV_A_ &fs_w);
3407 ev_unref (EV_A);
3408 }
3409
2199 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3410 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2200 { 3411 {
2201 WL w_ = fs_hash [slot].head; 3412 WL w_ = fs_hash [slot].head;
2202 fs_hash [slot].head = 0; 3413 fs_hash [slot].head = 0;
2203 3414
2204 while (w_) 3415 while (w_)
… …
2209 w->wd = -1; 3420 w->wd = -1;
2210 3421
2211 if (fs_fd >= 0) 3422 if (fs_fd >= 0)
2212 infy_add (EV_A_ w); /* re-add, no matter what */ 3423 infy_add (EV_A_ w); /* re-add, no matter what */
2213 else 3424 else
3425 {
3426 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3427 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2214 ev_timer_start (EV_A_ &w->timer); 3428 ev_timer_again (EV_A_ &w->timer);
3429 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3430 }
2215 } 3431 }
2216
2217 } 3432 }
2218} 3433}
2219 3434
3435#endif
3436
3437#ifdef _WIN32
3438# define EV_LSTAT(p,b) _stati64 (p, b)
3439#else
3440# define EV_LSTAT(p,b) lstat (p, b)
2220#endif 3441#endif
2221 3442
2222void 3443void
2223ev_stat_stat (EV_P_ ev_stat *w) 3444ev_stat_stat (EV_P_ ev_stat *w)
2224{ 3445{
… …
2231static void noinline 3452static void noinline
2232stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3453stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2233{ 3454{
2234 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3455 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2235 3456
2236 /* we copy this here each the time so that */ 3457 ev_statdata prev = w->attr;
2237 /* prev has the old value when the callback gets invoked */
2238 w->prev = w->attr;
2239 ev_stat_stat (EV_A_ w); 3458 ev_stat_stat (EV_A_ w);
2240 3459
2241 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3460 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2242 if ( 3461 if (
2243 w->prev.st_dev != w->attr.st_dev 3462 prev.st_dev != w->attr.st_dev
2244 || w->prev.st_ino != w->attr.st_ino 3463 || prev.st_ino != w->attr.st_ino
2245 || w->prev.st_mode != w->attr.st_mode 3464 || prev.st_mode != w->attr.st_mode
2246 || w->prev.st_nlink != w->attr.st_nlink 3465 || prev.st_nlink != w->attr.st_nlink
2247 || w->prev.st_uid != w->attr.st_uid 3466 || prev.st_uid != w->attr.st_uid
2248 || w->prev.st_gid != w->attr.st_gid 3467 || prev.st_gid != w->attr.st_gid
2249 || w->prev.st_rdev != w->attr.st_rdev 3468 || prev.st_rdev != w->attr.st_rdev
2250 || w->prev.st_size != w->attr.st_size 3469 || prev.st_size != w->attr.st_size
2251 || w->prev.st_atime != w->attr.st_atime 3470 || prev.st_atime != w->attr.st_atime
2252 || w->prev.st_mtime != w->attr.st_mtime 3471 || prev.st_mtime != w->attr.st_mtime
2253 || w->prev.st_ctime != w->attr.st_ctime 3472 || prev.st_ctime != w->attr.st_ctime
2254 ) { 3473 ) {
3474 /* we only update w->prev on actual differences */
3475 /* in case we test more often than invoke the callback, */
3476 /* to ensure that prev is always different to attr */
3477 w->prev = prev;
3478
2255 #if EV_USE_INOTIFY 3479 #if EV_USE_INOTIFY
3480 if (fs_fd >= 0)
3481 {
2256 infy_del (EV_A_ w); 3482 infy_del (EV_A_ w);
2257 infy_add (EV_A_ w); 3483 infy_add (EV_A_ w);
2258 ev_stat_stat (EV_A_ w); /* avoid race... */ 3484 ev_stat_stat (EV_A_ w); /* avoid race... */
3485 }
2259 #endif 3486 #endif
2260 3487
2261 ev_feed_event (EV_A_ w, EV_STAT); 3488 ev_feed_event (EV_A_ w, EV_STAT);
2262 } 3489 }
2263} 3490}
… …
2266ev_stat_start (EV_P_ ev_stat *w) 3493ev_stat_start (EV_P_ ev_stat *w)
2267{ 3494{
2268 if (expect_false (ev_is_active (w))) 3495 if (expect_false (ev_is_active (w)))
2269 return; 3496 return;
2270 3497
2271 /* since we use memcmp, we need to clear any padding data etc. */
2272 memset (&w->prev, 0, sizeof (ev_statdata));
2273 memset (&w->attr, 0, sizeof (ev_statdata));
2274
2275 ev_stat_stat (EV_A_ w); 3498 ev_stat_stat (EV_A_ w);
2276 3499
3500 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2277 if (w->interval < MIN_STAT_INTERVAL) 3501 w->interval = MIN_STAT_INTERVAL;
2278 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2279 3502
2280 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3503 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2281 ev_set_priority (&w->timer, ev_priority (w)); 3504 ev_set_priority (&w->timer, ev_priority (w));
2282 3505
2283#if EV_USE_INOTIFY 3506#if EV_USE_INOTIFY
2284 infy_init (EV_A); 3507 infy_init (EV_A);
2285 3508
2286 if (fs_fd >= 0) 3509 if (fs_fd >= 0)
2287 infy_add (EV_A_ w); 3510 infy_add (EV_A_ w);
2288 else 3511 else
2289#endif 3512#endif
3513 {
2290 ev_timer_start (EV_A_ &w->timer); 3514 ev_timer_again (EV_A_ &w->timer);
3515 ev_unref (EV_A);
3516 }
2291 3517
2292 ev_start (EV_A_ (W)w, 1); 3518 ev_start (EV_A_ (W)w, 1);
3519
3520 EV_FREQUENT_CHECK;
2293} 3521}
2294 3522
2295void 3523void
2296ev_stat_stop (EV_P_ ev_stat *w) 3524ev_stat_stop (EV_P_ ev_stat *w)
2297{ 3525{
2298 clear_pending (EV_A_ (W)w); 3526 clear_pending (EV_A_ (W)w);
2299 if (expect_false (!ev_is_active (w))) 3527 if (expect_false (!ev_is_active (w)))
2300 return; 3528 return;
2301 3529
3530 EV_FREQUENT_CHECK;
3531
2302#if EV_USE_INOTIFY 3532#if EV_USE_INOTIFY
2303 infy_del (EV_A_ w); 3533 infy_del (EV_A_ w);
2304#endif 3534#endif
3535
3536 if (ev_is_active (&w->timer))
3537 {
3538 ev_ref (EV_A);
2305 ev_timer_stop (EV_A_ &w->timer); 3539 ev_timer_stop (EV_A_ &w->timer);
3540 }
2306 3541
2307 ev_stop (EV_A_ (W)w); 3542 ev_stop (EV_A_ (W)w);
3543
3544 EV_FREQUENT_CHECK;
2308} 3545}
2309#endif 3546#endif
2310 3547
2311#if EV_IDLE_ENABLE 3548#if EV_IDLE_ENABLE
2312void 3549void
… …
2315 if (expect_false (ev_is_active (w))) 3552 if (expect_false (ev_is_active (w)))
2316 return; 3553 return;
2317 3554
2318 pri_adjust (EV_A_ (W)w); 3555 pri_adjust (EV_A_ (W)w);
2319 3556
3557 EV_FREQUENT_CHECK;
3558
2320 { 3559 {
2321 int active = ++idlecnt [ABSPRI (w)]; 3560 int active = ++idlecnt [ABSPRI (w)];
2322 3561
2323 ++idleall; 3562 ++idleall;
2324 ev_start (EV_A_ (W)w, active); 3563 ev_start (EV_A_ (W)w, active);
2325 3564
2326 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 3565 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2327 idles [ABSPRI (w)][active - 1] = w; 3566 idles [ABSPRI (w)][active - 1] = w;
2328 } 3567 }
3568
3569 EV_FREQUENT_CHECK;
2329} 3570}
2330 3571
2331void 3572void
2332ev_idle_stop (EV_P_ ev_idle *w) 3573ev_idle_stop (EV_P_ ev_idle *w)
2333{ 3574{
2334 clear_pending (EV_A_ (W)w); 3575 clear_pending (EV_A_ (W)w);
2335 if (expect_false (!ev_is_active (w))) 3576 if (expect_false (!ev_is_active (w)))
2336 return; 3577 return;
2337 3578
3579 EV_FREQUENT_CHECK;
3580
2338 { 3581 {
2339 int active = ((W)w)->active; 3582 int active = ev_active (w);
2340 3583
2341 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; 3584 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2342 ((W)idles [ABSPRI (w)][active - 1])->active = active; 3585 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2343 3586
2344 ev_stop (EV_A_ (W)w); 3587 ev_stop (EV_A_ (W)w);
2345 --idleall; 3588 --idleall;
2346 } 3589 }
2347}
2348#endif
2349 3590
3591 EV_FREQUENT_CHECK;
3592}
3593#endif
3594
3595#if EV_PREPARE_ENABLE
2350void 3596void
2351ev_prepare_start (EV_P_ ev_prepare *w) 3597ev_prepare_start (EV_P_ ev_prepare *w)
2352{ 3598{
2353 if (expect_false (ev_is_active (w))) 3599 if (expect_false (ev_is_active (w)))
2354 return; 3600 return;
3601
3602 EV_FREQUENT_CHECK;
2355 3603
2356 ev_start (EV_A_ (W)w, ++preparecnt); 3604 ev_start (EV_A_ (W)w, ++preparecnt);
2357 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 3605 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2358 prepares [preparecnt - 1] = w; 3606 prepares [preparecnt - 1] = w;
3607
3608 EV_FREQUENT_CHECK;
2359} 3609}
2360 3610
2361void 3611void
2362ev_prepare_stop (EV_P_ ev_prepare *w) 3612ev_prepare_stop (EV_P_ ev_prepare *w)
2363{ 3613{
2364 clear_pending (EV_A_ (W)w); 3614 clear_pending (EV_A_ (W)w);
2365 if (expect_false (!ev_is_active (w))) 3615 if (expect_false (!ev_is_active (w)))
2366 return; 3616 return;
2367 3617
3618 EV_FREQUENT_CHECK;
3619
2368 { 3620 {
2369 int active = ((W)w)->active; 3621 int active = ev_active (w);
3622
2370 prepares [active - 1] = prepares [--preparecnt]; 3623 prepares [active - 1] = prepares [--preparecnt];
2371 ((W)prepares [active - 1])->active = active; 3624 ev_active (prepares [active - 1]) = active;
2372 } 3625 }
2373 3626
2374 ev_stop (EV_A_ (W)w); 3627 ev_stop (EV_A_ (W)w);
2375}
2376 3628
3629 EV_FREQUENT_CHECK;
3630}
3631#endif
3632
3633#if EV_CHECK_ENABLE
2377void 3634void
2378ev_check_start (EV_P_ ev_check *w) 3635ev_check_start (EV_P_ ev_check *w)
2379{ 3636{
2380 if (expect_false (ev_is_active (w))) 3637 if (expect_false (ev_is_active (w)))
2381 return; 3638 return;
3639
3640 EV_FREQUENT_CHECK;
2382 3641
2383 ev_start (EV_A_ (W)w, ++checkcnt); 3642 ev_start (EV_A_ (W)w, ++checkcnt);
2384 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 3643 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2385 checks [checkcnt - 1] = w; 3644 checks [checkcnt - 1] = w;
3645
3646 EV_FREQUENT_CHECK;
2386} 3647}
2387 3648
2388void 3649void
2389ev_check_stop (EV_P_ ev_check *w) 3650ev_check_stop (EV_P_ ev_check *w)
2390{ 3651{
2391 clear_pending (EV_A_ (W)w); 3652 clear_pending (EV_A_ (W)w);
2392 if (expect_false (!ev_is_active (w))) 3653 if (expect_false (!ev_is_active (w)))
2393 return; 3654 return;
2394 3655
3656 EV_FREQUENT_CHECK;
3657
2395 { 3658 {
2396 int active = ((W)w)->active; 3659 int active = ev_active (w);
3660
2397 checks [active - 1] = checks [--checkcnt]; 3661 checks [active - 1] = checks [--checkcnt];
2398 ((W)checks [active - 1])->active = active; 3662 ev_active (checks [active - 1]) = active;
2399 } 3663 }
2400 3664
2401 ev_stop (EV_A_ (W)w); 3665 ev_stop (EV_A_ (W)w);
3666
3667 EV_FREQUENT_CHECK;
2402} 3668}
3669#endif
2403 3670
2404#if EV_EMBED_ENABLE 3671#if EV_EMBED_ENABLE
2405void noinline 3672void noinline
2406ev_embed_sweep (EV_P_ ev_embed *w) 3673ev_embed_sweep (EV_P_ ev_embed *w)
2407{ 3674{
2408 ev_loop (w->other, EVLOOP_NONBLOCK); 3675 ev_run (w->other, EVRUN_NOWAIT);
2409} 3676}
2410 3677
2411static void 3678static void
2412embed_io_cb (EV_P_ ev_io *io, int revents) 3679embed_io_cb (EV_P_ ev_io *io, int revents)
2413{ 3680{
2414 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3681 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2415 3682
2416 if (ev_cb (w)) 3683 if (ev_cb (w))
2417 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3684 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2418 else 3685 else
2419 ev_loop (w->other, EVLOOP_NONBLOCK); 3686 ev_run (w->other, EVRUN_NOWAIT);
2420} 3687}
2421 3688
2422static void 3689static void
2423embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3690embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2424{ 3691{
2425 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3692 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2426 3693
2427 { 3694 {
2428 struct ev_loop *loop = w->other; 3695 EV_P = w->other;
2429 3696
2430 while (fdchangecnt) 3697 while (fdchangecnt)
2431 { 3698 {
2432 fd_reify (EV_A); 3699 fd_reify (EV_A);
2433 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3700 ev_run (EV_A_ EVRUN_NOWAIT);
2434 } 3701 }
2435 } 3702 }
3703}
3704
3705static void
3706embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3707{
3708 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3709
3710 ev_embed_stop (EV_A_ w);
3711
3712 {
3713 EV_P = w->other;
3714
3715 ev_loop_fork (EV_A);
3716 ev_run (EV_A_ EVRUN_NOWAIT);
3717 }
3718
3719 ev_embed_start (EV_A_ w);
2436} 3720}
2437 3721
2438#if 0 3722#if 0
2439static void 3723static void
2440embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3724embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2448{ 3732{
2449 if (expect_false (ev_is_active (w))) 3733 if (expect_false (ev_is_active (w)))
2450 return; 3734 return;
2451 3735
2452 { 3736 {
2453 struct ev_loop *loop = w->other; 3737 EV_P = w->other;
2454 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3738 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2455 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3739 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2456 } 3740 }
3741
3742 EV_FREQUENT_CHECK;
2457 3743
2458 ev_set_priority (&w->io, ev_priority (w)); 3744 ev_set_priority (&w->io, ev_priority (w));
2459 ev_io_start (EV_A_ &w->io); 3745 ev_io_start (EV_A_ &w->io);
2460 3746
2461 ev_prepare_init (&w->prepare, embed_prepare_cb); 3747 ev_prepare_init (&w->prepare, embed_prepare_cb);
2462 ev_set_priority (&w->prepare, EV_MINPRI); 3748 ev_set_priority (&w->prepare, EV_MINPRI);
2463 ev_prepare_start (EV_A_ &w->prepare); 3749 ev_prepare_start (EV_A_ &w->prepare);
2464 3750
3751 ev_fork_init (&w->fork, embed_fork_cb);
3752 ev_fork_start (EV_A_ &w->fork);
3753
2465 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 3754 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2466 3755
2467 ev_start (EV_A_ (W)w, 1); 3756 ev_start (EV_A_ (W)w, 1);
3757
3758 EV_FREQUENT_CHECK;
2468} 3759}
2469 3760
2470void 3761void
2471ev_embed_stop (EV_P_ ev_embed *w) 3762ev_embed_stop (EV_P_ ev_embed *w)
2472{ 3763{
2473 clear_pending (EV_A_ (W)w); 3764 clear_pending (EV_A_ (W)w);
2474 if (expect_false (!ev_is_active (w))) 3765 if (expect_false (!ev_is_active (w)))
2475 return; 3766 return;
2476 3767
3768 EV_FREQUENT_CHECK;
3769
2477 ev_io_stop (EV_A_ &w->io); 3770 ev_io_stop (EV_A_ &w->io);
2478 ev_prepare_stop (EV_A_ &w->prepare); 3771 ev_prepare_stop (EV_A_ &w->prepare);
3772 ev_fork_stop (EV_A_ &w->fork);
2479 3773
2480 ev_stop (EV_A_ (W)w); 3774 ev_stop (EV_A_ (W)w);
3775
3776 EV_FREQUENT_CHECK;
2481} 3777}
2482#endif 3778#endif
2483 3779
2484#if EV_FORK_ENABLE 3780#if EV_FORK_ENABLE
2485void 3781void
2486ev_fork_start (EV_P_ ev_fork *w) 3782ev_fork_start (EV_P_ ev_fork *w)
2487{ 3783{
2488 if (expect_false (ev_is_active (w))) 3784 if (expect_false (ev_is_active (w)))
2489 return; 3785 return;
2490 3786
3787 EV_FREQUENT_CHECK;
3788
2491 ev_start (EV_A_ (W)w, ++forkcnt); 3789 ev_start (EV_A_ (W)w, ++forkcnt);
2492 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 3790 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2493 forks [forkcnt - 1] = w; 3791 forks [forkcnt - 1] = w;
3792
3793 EV_FREQUENT_CHECK;
2494} 3794}
2495 3795
2496void 3796void
2497ev_fork_stop (EV_P_ ev_fork *w) 3797ev_fork_stop (EV_P_ ev_fork *w)
2498{ 3798{
2499 clear_pending (EV_A_ (W)w); 3799 clear_pending (EV_A_ (W)w);
2500 if (expect_false (!ev_is_active (w))) 3800 if (expect_false (!ev_is_active (w)))
2501 return; 3801 return;
2502 3802
3803 EV_FREQUENT_CHECK;
3804
2503 { 3805 {
2504 int active = ((W)w)->active; 3806 int active = ev_active (w);
3807
2505 forks [active - 1] = forks [--forkcnt]; 3808 forks [active - 1] = forks [--forkcnt];
2506 ((W)forks [active - 1])->active = active; 3809 ev_active (forks [active - 1]) = active;
2507 } 3810 }
2508 3811
2509 ev_stop (EV_A_ (W)w); 3812 ev_stop (EV_A_ (W)w);
3813
3814 EV_FREQUENT_CHECK;
3815}
3816#endif
3817
3818#if EV_CLEANUP_ENABLE
3819void
3820ev_cleanup_start (EV_P_ ev_cleanup *w)
3821{
3822 if (expect_false (ev_is_active (w)))
3823 return;
3824
3825 EV_FREQUENT_CHECK;
3826
3827 ev_start (EV_A_ (W)w, ++cleanupcnt);
3828 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
3829 cleanups [cleanupcnt - 1] = w;
3830
3831 /* cleanup watchers should never keep a refcount on the loop */
3832 ev_unref (EV_A);
3833 EV_FREQUENT_CHECK;
3834}
3835
3836void
3837ev_cleanup_stop (EV_P_ ev_cleanup *w)
3838{
3839 clear_pending (EV_A_ (W)w);
3840 if (expect_false (!ev_is_active (w)))
3841 return;
3842
3843 EV_FREQUENT_CHECK;
3844 ev_ref (EV_A);
3845
3846 {
3847 int active = ev_active (w);
3848
3849 cleanups [active - 1] = cleanups [--cleanupcnt];
3850 ev_active (cleanups [active - 1]) = active;
3851 }
3852
3853 ev_stop (EV_A_ (W)w);
3854
3855 EV_FREQUENT_CHECK;
2510} 3856}
2511#endif 3857#endif
2512 3858
2513#if EV_ASYNC_ENABLE 3859#if EV_ASYNC_ENABLE
2514void 3860void
2515ev_async_start (EV_P_ ev_async *w) 3861ev_async_start (EV_P_ ev_async *w)
2516{ 3862{
2517 if (expect_false (ev_is_active (w))) 3863 if (expect_false (ev_is_active (w)))
2518 return; 3864 return;
2519 3865
3866 w->sent = 0;
3867
2520 evpipe_init (EV_A); 3868 evpipe_init (EV_A);
3869
3870 EV_FREQUENT_CHECK;
2521 3871
2522 ev_start (EV_A_ (W)w, ++asynccnt); 3872 ev_start (EV_A_ (W)w, ++asynccnt);
2523 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 3873 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2524 asyncs [asynccnt - 1] = w; 3874 asyncs [asynccnt - 1] = w;
3875
3876 EV_FREQUENT_CHECK;
2525} 3877}
2526 3878
2527void 3879void
2528ev_async_stop (EV_P_ ev_async *w) 3880ev_async_stop (EV_P_ ev_async *w)
2529{ 3881{
2530 clear_pending (EV_A_ (W)w); 3882 clear_pending (EV_A_ (W)w);
2531 if (expect_false (!ev_is_active (w))) 3883 if (expect_false (!ev_is_active (w)))
2532 return; 3884 return;
2533 3885
3886 EV_FREQUENT_CHECK;
3887
2534 { 3888 {
2535 int active = ((W)w)->active; 3889 int active = ev_active (w);
3890
2536 asyncs [active - 1] = asyncs [--asynccnt]; 3891 asyncs [active - 1] = asyncs [--asynccnt];
2537 ((W)asyncs [active - 1])->active = active; 3892 ev_active (asyncs [active - 1]) = active;
2538 } 3893 }
2539 3894
2540 ev_stop (EV_A_ (W)w); 3895 ev_stop (EV_A_ (W)w);
3896
3897 EV_FREQUENT_CHECK;
2541} 3898}
2542 3899
2543void 3900void
2544ev_async_send (EV_P_ ev_async *w) 3901ev_async_send (EV_P_ ev_async *w)
2545{ 3902{
2546 w->sent = 1; 3903 w->sent = 1;
2547 evpipe_write (EV_A_ &gotasync); 3904 evpipe_write (EV_A_ &async_pending);
2548} 3905}
2549#endif 3906#endif
2550 3907
2551/*****************************************************************************/ 3908/*****************************************************************************/
2552 3909
… …
2562once_cb (EV_P_ struct ev_once *once, int revents) 3919once_cb (EV_P_ struct ev_once *once, int revents)
2563{ 3920{
2564 void (*cb)(int revents, void *arg) = once->cb; 3921 void (*cb)(int revents, void *arg) = once->cb;
2565 void *arg = once->arg; 3922 void *arg = once->arg;
2566 3923
2567 ev_io_stop (EV_A_ &once->io); 3924 ev_io_stop (EV_A_ &once->io);
2568 ev_timer_stop (EV_A_ &once->to); 3925 ev_timer_stop (EV_A_ &once->to);
2569 ev_free (once); 3926 ev_free (once);
2570 3927
2571 cb (revents, arg); 3928 cb (revents, arg);
2572} 3929}
2573 3930
2574static void 3931static void
2575once_cb_io (EV_P_ ev_io *w, int revents) 3932once_cb_io (EV_P_ ev_io *w, int revents)
2576{ 3933{
2577 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3934 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3935
3936 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2578} 3937}
2579 3938
2580static void 3939static void
2581once_cb_to (EV_P_ ev_timer *w, int revents) 3940once_cb_to (EV_P_ ev_timer *w, int revents)
2582{ 3941{
2583 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3942 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3943
3944 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2584} 3945}
2585 3946
2586void 3947void
2587ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3948ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2588{ 3949{
2589 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3950 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
2590 3951
2591 if (expect_false (!once)) 3952 if (expect_false (!once))
2592 { 3953 {
2593 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3954 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
2594 return; 3955 return;
2595 } 3956 }
2596 3957
2597 once->cb = cb; 3958 once->cb = cb;
2598 once->arg = arg; 3959 once->arg = arg;
… …
2610 ev_timer_set (&once->to, timeout, 0.); 3971 ev_timer_set (&once->to, timeout, 0.);
2611 ev_timer_start (EV_A_ &once->to); 3972 ev_timer_start (EV_A_ &once->to);
2612 } 3973 }
2613} 3974}
2614 3975
3976/*****************************************************************************/
3977
3978#if EV_WALK_ENABLE
3979void ecb_cold
3980ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3981{
3982 int i, j;
3983 ev_watcher_list *wl, *wn;
3984
3985 if (types & (EV_IO | EV_EMBED))
3986 for (i = 0; i < anfdmax; ++i)
3987 for (wl = anfds [i].head; wl; )
3988 {
3989 wn = wl->next;
3990
3991#if EV_EMBED_ENABLE
3992 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3993 {
3994 if (types & EV_EMBED)
3995 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3996 }
3997 else
3998#endif
3999#if EV_USE_INOTIFY
4000 if (ev_cb ((ev_io *)wl) == infy_cb)
4001 ;
4002 else
4003#endif
4004 if ((ev_io *)wl != &pipe_w)
4005 if (types & EV_IO)
4006 cb (EV_A_ EV_IO, wl);
4007
4008 wl = wn;
4009 }
4010
4011 if (types & (EV_TIMER | EV_STAT))
4012 for (i = timercnt + HEAP0; i-- > HEAP0; )
4013#if EV_STAT_ENABLE
4014 /*TODO: timer is not always active*/
4015 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
4016 {
4017 if (types & EV_STAT)
4018 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
4019 }
4020 else
4021#endif
4022 if (types & EV_TIMER)
4023 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
4024
4025#if EV_PERIODIC_ENABLE
4026 if (types & EV_PERIODIC)
4027 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
4028 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
4029#endif
4030
4031#if EV_IDLE_ENABLE
4032 if (types & EV_IDLE)
4033 for (j = NUMPRI; i--; )
4034 for (i = idlecnt [j]; i--; )
4035 cb (EV_A_ EV_IDLE, idles [j][i]);
4036#endif
4037
4038#if EV_FORK_ENABLE
4039 if (types & EV_FORK)
4040 for (i = forkcnt; i--; )
4041 if (ev_cb (forks [i]) != embed_fork_cb)
4042 cb (EV_A_ EV_FORK, forks [i]);
4043#endif
4044
4045#if EV_ASYNC_ENABLE
4046 if (types & EV_ASYNC)
4047 for (i = asynccnt; i--; )
4048 cb (EV_A_ EV_ASYNC, asyncs [i]);
4049#endif
4050
4051#if EV_PREPARE_ENABLE
4052 if (types & EV_PREPARE)
4053 for (i = preparecnt; i--; )
4054# if EV_EMBED_ENABLE
4055 if (ev_cb (prepares [i]) != embed_prepare_cb)
4056# endif
4057 cb (EV_A_ EV_PREPARE, prepares [i]);
4058#endif
4059
4060#if EV_CHECK_ENABLE
4061 if (types & EV_CHECK)
4062 for (i = checkcnt; i--; )
4063 cb (EV_A_ EV_CHECK, checks [i]);
4064#endif
4065
4066#if EV_SIGNAL_ENABLE
4067 if (types & EV_SIGNAL)
4068 for (i = 0; i < EV_NSIG - 1; ++i)
4069 for (wl = signals [i].head; wl; )
4070 {
4071 wn = wl->next;
4072 cb (EV_A_ EV_SIGNAL, wl);
4073 wl = wn;
4074 }
4075#endif
4076
4077#if EV_CHILD_ENABLE
4078 if (types & EV_CHILD)
4079 for (i = (EV_PID_HASHSIZE); i--; )
4080 for (wl = childs [i]; wl; )
4081 {
4082 wn = wl->next;
4083 cb (EV_A_ EV_CHILD, wl);
4084 wl = wn;
4085 }
4086#endif
4087/* EV_STAT 0x00001000 /* stat data changed */
4088/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
4089}
4090#endif
4091
2615#if EV_MULTIPLICITY 4092#if EV_MULTIPLICITY
2616 #include "ev_wrap.h" 4093 #include "ev_wrap.h"
2617#endif 4094#endif
2618 4095
2619#ifdef __cplusplus 4096EV_CPP(})
2620}
2621#endif
2622 4097

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