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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 1.388 by root, Fri Jul 29 12:17:26 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 && 0 /* TODO: only true when using volatiles */
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)
521 #include <WinNT.h>
522 #define ECB_MEMORY_FENCE MemoryBarrier ()
523 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
524 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
525 #endif
526#endif
527
528#ifndef ECB_MEMORY_FENCE
529 #include <pthread.h>
530
531 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
532 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
533 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
534 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
535#endif
536
537#if ECB_GCC_VERSION(3,1)
538 #define ecb_attribute(attrlist) __attribute__(attrlist)
539 #define ecb_is_constant(expr) __builtin_constant_p (expr)
540 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
541 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
542#else
543 #define ecb_attribute(attrlist)
544 #define ecb_is_constant(expr) 0
545 #define ecb_expect(expr,value) (expr)
546 #define ecb_prefetch(addr,rw,locality)
547#endif
548
549#define ecb_noinline ecb_attribute ((__noinline__))
550#define ecb_noreturn ecb_attribute ((__noreturn__))
551#define ecb_unused ecb_attribute ((__unused__))
552#define ecb_const ecb_attribute ((__const__))
553#define ecb_pure ecb_attribute ((__pure__))
554
555#if ECB_GCC_VERSION(4,3)
556 #define ecb_artificial ecb_attribute ((__artificial__))
557 #define ecb_hot ecb_attribute ((__hot__))
558 #define ecb_cold ecb_attribute ((__cold__))
559#else
560 #define ecb_artificial
561 #define ecb_hot
562 #define ecb_cold
563#endif
564
565/* put around conditional expressions if you are very sure that the */
566/* expression is mostly true or mostly false. note that these return */
567/* booleans, not the expression. */
303#define expect_false(expr) expect ((expr) != 0, 0) 568#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
304#define expect_true(expr) expect ((expr) != 0, 1) 569#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
570/* ecb.h end */
571
572#define expect_false(cond) ecb_expect_false (cond)
573#define expect_true(cond) ecb_expect_true (cond)
574#define noinline ecb_noinline
575
305#define inline_size static inline 576#define inline_size ecb_inline
306 577
307#if EV_MINIMAL 578#if EV_FEATURE_CODE
579# define inline_speed ecb_inline
580#else
308# define inline_speed static noinline 581# define inline_speed static noinline
582#endif
583
584#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
585
586#if EV_MINPRI == EV_MAXPRI
587# define ABSPRI(w) (((W)w), 0)
309#else 588#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) 589# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
590#endif
315 591
316#define EMPTY /* required for microsofts broken pseudo-c compiler */ 592#define EMPTY /* required for microsofts broken pseudo-c compiler */
317#define EMPTY2(a,b) /* used to suppress some warnings */ 593#define EMPTY2(a,b) /* used to suppress some warnings */
318 594
319typedef ev_watcher *W; 595typedef ev_watcher *W;
320typedef ev_watcher_list *WL; 596typedef ev_watcher_list *WL;
321typedef ev_watcher_time *WT; 597typedef ev_watcher_time *WT;
322 598
599#define ev_active(w) ((W)(w))->active
600#define ev_at(w) ((WT)(w))->at
601
602#if EV_USE_REALTIME
603/* sig_atomic_t is used to avoid per-thread variables or locking but still */
604/* giving it a reasonably high chance of working on typical architectures */
605static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
606#endif
607
323#if EV_USE_MONOTONIC 608#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? */ 609static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
610#endif
611
612#ifndef EV_FD_TO_WIN32_HANDLE
613# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
614#endif
615#ifndef EV_WIN32_HANDLE_TO_FD
616# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
617#endif
618#ifndef EV_WIN32_CLOSE_FD
619# define EV_WIN32_CLOSE_FD(fd) close (fd)
327#endif 620#endif
328 621
329#ifdef _WIN32 622#ifdef _WIN32
330# include "ev_win32.c" 623# include "ev_win32.c"
331#endif 624#endif
332 625
333/*****************************************************************************/ 626/*****************************************************************************/
334 627
628/* define a suitable floor function (only used by periodics atm) */
629
630#if EV_USE_FLOOR
631# include <math.h>
632# define ev_floor(v) floor (v)
633#else
634
635#include <float.h>
636
637/* a floor() replacement function, should be independent of ev_tstamp type */
638static ev_tstamp noinline
639ev_floor (ev_tstamp v)
640{
641 /* the choice of shift factor is not terribly important */
642#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
643 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
644#else
645 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
646#endif
647
648 /* argument too large for an unsigned long? */
649 if (expect_false (v >= shift))
650 {
651 ev_tstamp f;
652
653 if (v == v - 1.)
654 return v; /* very large number */
655
656 f = shift * ev_floor (v * (1. / shift));
657 return f + ev_floor (v - f);
658 }
659
660 /* special treatment for negative args? */
661 if (expect_false (v < 0.))
662 {
663 ev_tstamp f = -ev_floor (-v);
664
665 return f - (f == v ? 0 : 1);
666 }
667
668 /* fits into an unsigned long */
669 return (unsigned long)v;
670}
671
672#endif
673
674/*****************************************************************************/
675
676#ifdef __linux
677# include <sys/utsname.h>
678#endif
679
680static unsigned int noinline ecb_cold
681ev_linux_version (void)
682{
683#ifdef __linux
684 unsigned int v = 0;
685 struct utsname buf;
686 int i;
687 char *p = buf.release;
688
689 if (uname (&buf))
690 return 0;
691
692 for (i = 3+1; --i; )
693 {
694 unsigned int c = 0;
695
696 for (;;)
697 {
698 if (*p >= '0' && *p <= '9')
699 c = c * 10 + *p++ - '0';
700 else
701 {
702 p += *p == '.';
703 break;
704 }
705 }
706
707 v = (v << 8) | c;
708 }
709
710 return v;
711#else
712 return 0;
713#endif
714}
715
716/*****************************************************************************/
717
718#if EV_AVOID_STDIO
719static void noinline ecb_cold
720ev_printerr (const char *msg)
721{
722 write (STDERR_FILENO, msg, strlen (msg));
723}
724#endif
725
335static void (*syserr_cb)(const char *msg); 726static void (*syserr_cb)(const char *msg);
336 727
337void 728void ecb_cold
338ev_set_syserr_cb (void (*cb)(const char *msg)) 729ev_set_syserr_cb (void (*cb)(const char *msg))
339{ 730{
340 syserr_cb = cb; 731 syserr_cb = cb;
341} 732}
342 733
343static void noinline 734static void noinline ecb_cold
344syserr (const char *msg) 735ev_syserr (const char *msg)
345{ 736{
346 if (!msg) 737 if (!msg)
347 msg = "(libev) system error"; 738 msg = "(libev) system error";
348 739
349 if (syserr_cb) 740 if (syserr_cb)
350 syserr_cb (msg); 741 syserr_cb (msg);
351 else 742 else
352 { 743 {
744#if EV_AVOID_STDIO
745 ev_printerr (msg);
746 ev_printerr (": ");
747 ev_printerr (strerror (errno));
748 ev_printerr ("\n");
749#else
353 perror (msg); 750 perror (msg);
751#endif
354 abort (); 752 abort ();
355 } 753 }
356} 754}
357 755
756static void *
757ev_realloc_emul (void *ptr, long size)
758{
759#if __GLIBC__
760 return realloc (ptr, size);
761#else
762 /* some systems, notably openbsd and darwin, fail to properly
763 * implement realloc (x, 0) (as required by both ansi c-89 and
764 * the single unix specification, so work around them here.
765 */
766
767 if (size)
768 return realloc (ptr, size);
769
770 free (ptr);
771 return 0;
772#endif
773}
774
358static void *(*alloc)(void *ptr, long size); 775static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
359 776
360void 777void ecb_cold
361ev_set_allocator (void *(*cb)(void *ptr, long size)) 778ev_set_allocator (void *(*cb)(void *ptr, long size))
362{ 779{
363 alloc = cb; 780 alloc = cb;
364} 781}
365 782
366inline_speed void * 783inline_speed void *
367ev_realloc (void *ptr, long size) 784ev_realloc (void *ptr, long size)
368{ 785{
369 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 786 ptr = alloc (ptr, size);
370 787
371 if (!ptr && size) 788 if (!ptr && size)
372 { 789 {
790#if EV_AVOID_STDIO
791 ev_printerr ("(libev) memory allocation failed, aborting.\n");
792#else
373 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 793 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
794#endif
374 abort (); 795 abort ();
375 } 796 }
376 797
377 return ptr; 798 return ptr;
378} 799}
… …
380#define ev_malloc(size) ev_realloc (0, (size)) 801#define ev_malloc(size) ev_realloc (0, (size))
381#define ev_free(ptr) ev_realloc ((ptr), 0) 802#define ev_free(ptr) ev_realloc ((ptr), 0)
382 803
383/*****************************************************************************/ 804/*****************************************************************************/
384 805
806/* set in reify when reification needed */
807#define EV_ANFD_REIFY 1
808
809/* file descriptor info structure */
385typedef struct 810typedef struct
386{ 811{
387 WL head; 812 WL head;
388 unsigned char events; 813 unsigned char events; /* the events watched for */
814 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
815 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
389 unsigned char reify; 816 unsigned char unused;
817#if EV_USE_EPOLL
818 unsigned int egen; /* generation counter to counter epoll bugs */
819#endif
390#if EV_SELECT_IS_WINSOCKET 820#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
391 SOCKET handle; 821 SOCKET handle;
392#endif 822#endif
823#if EV_USE_IOCP
824 OVERLAPPED or, ow;
825#endif
393} ANFD; 826} ANFD;
394 827
828/* stores the pending event set for a given watcher */
395typedef struct 829typedef struct
396{ 830{
397 W w; 831 W w;
398 int events; 832 int events; /* the pending event set for the given watcher */
399} ANPENDING; 833} ANPENDING;
400 834
401#if EV_USE_INOTIFY 835#if EV_USE_INOTIFY
836/* hash table entry per inotify-id */
402typedef struct 837typedef struct
403{ 838{
404 WL head; 839 WL head;
405} ANFS; 840} ANFS;
841#endif
842
843/* Heap Entry */
844#if EV_HEAP_CACHE_AT
845 /* a heap element */
846 typedef struct {
847 ev_tstamp at;
848 WT w;
849 } ANHE;
850
851 #define ANHE_w(he) (he).w /* access watcher, read-write */
852 #define ANHE_at(he) (he).at /* access cached at, read-only */
853 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
854#else
855 /* a heap element */
856 typedef WT ANHE;
857
858 #define ANHE_w(he) (he)
859 #define ANHE_at(he) (he)->at
860 #define ANHE_at_cache(he)
406#endif 861#endif
407 862
408#if EV_MULTIPLICITY 863#if EV_MULTIPLICITY
409 864
410 struct ev_loop 865 struct ev_loop
… …
429 884
430 static int ev_default_loop_ptr; 885 static int ev_default_loop_ptr;
431 886
432#endif 887#endif
433 888
889#if EV_FEATURE_API
890# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
891# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
892# define EV_INVOKE_PENDING invoke_cb (EV_A)
893#else
894# define EV_RELEASE_CB (void)0
895# define EV_ACQUIRE_CB (void)0
896# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
897#endif
898
899#define EVBREAK_RECURSE 0x80
900
434/*****************************************************************************/ 901/*****************************************************************************/
435 902
903#ifndef EV_HAVE_EV_TIME
436ev_tstamp 904ev_tstamp
437ev_time (void) 905ev_time (void)
438{ 906{
439#if EV_USE_REALTIME 907#if EV_USE_REALTIME
908 if (expect_true (have_realtime))
909 {
440 struct timespec ts; 910 struct timespec ts;
441 clock_gettime (CLOCK_REALTIME, &ts); 911 clock_gettime (CLOCK_REALTIME, &ts);
442 return ts.tv_sec + ts.tv_nsec * 1e-9; 912 return ts.tv_sec + ts.tv_nsec * 1e-9;
443#else 913 }
914#endif
915
444 struct timeval tv; 916 struct timeval tv;
445 gettimeofday (&tv, 0); 917 gettimeofday (&tv, 0);
446 return tv.tv_sec + tv.tv_usec * 1e-6; 918 return tv.tv_sec + tv.tv_usec * 1e-6;
447#endif
448} 919}
920#endif
449 921
450ev_tstamp inline_size 922inline_size ev_tstamp
451get_clock (void) 923get_clock (void)
452{ 924{
453#if EV_USE_MONOTONIC 925#if EV_USE_MONOTONIC
454 if (expect_true (have_monotonic)) 926 if (expect_true (have_monotonic))
455 { 927 {
… …
476 if (delay > 0.) 948 if (delay > 0.)
477 { 949 {
478#if EV_USE_NANOSLEEP 950#if EV_USE_NANOSLEEP
479 struct timespec ts; 951 struct timespec ts;
480 952
481 ts.tv_sec = (time_t)delay; 953 EV_TS_SET (ts, delay);
482 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
483
484 nanosleep (&ts, 0); 954 nanosleep (&ts, 0);
485#elif defined(_WIN32) 955#elif defined(_WIN32)
486 Sleep ((unsigned long)(delay * 1e3)); 956 Sleep ((unsigned long)(delay * 1e3));
487#else 957#else
488 struct timeval tv; 958 struct timeval tv;
489 959
490 tv.tv_sec = (time_t)delay; 960 /* 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); 961 /* something not guaranteed by newer posix versions, but guaranteed */
492 962 /* by older ones */
963 EV_TV_SET (tv, delay);
493 select (0, 0, 0, 0, &tv); 964 select (0, 0, 0, 0, &tv);
494#endif 965#endif
495 } 966 }
496} 967}
497 968
498/*****************************************************************************/ 969/*****************************************************************************/
499 970
500int inline_size 971#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
972
973/* find a suitable new size for the given array, */
974/* hopefully by rounding to a nice-to-malloc size */
975inline_size int
501array_nextsize (int elem, int cur, int cnt) 976array_nextsize (int elem, int cur, int cnt)
502{ 977{
503 int ncur = cur + 1; 978 int ncur = cur + 1;
504 979
505 do 980 do
506 ncur <<= 1; 981 ncur <<= 1;
507 while (cnt > ncur); 982 while (cnt > ncur);
508 983
509 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */ 984 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
510 if (elem * ncur > 4096) 985 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
511 { 986 {
512 ncur *= elem; 987 ncur *= elem;
513 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095; 988 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
514 ncur = ncur - sizeof (void *) * 4; 989 ncur = ncur - sizeof (void *) * 4;
515 ncur /= elem; 990 ncur /= elem;
516 } 991 }
517 992
518 return ncur; 993 return ncur;
519} 994}
520 995
521static noinline void * 996static void * noinline ecb_cold
522array_realloc (int elem, void *base, int *cur, int cnt) 997array_realloc (int elem, void *base, int *cur, int cnt)
523{ 998{
524 *cur = array_nextsize (elem, *cur, cnt); 999 *cur = array_nextsize (elem, *cur, cnt);
525 return ev_realloc (base, elem * *cur); 1000 return ev_realloc (base, elem * *cur);
526} 1001}
1002
1003#define array_init_zero(base,count) \
1004 memset ((void *)(base), 0, sizeof (*(base)) * (count))
527 1005
528#define array_needsize(type,base,cur,cnt,init) \ 1006#define array_needsize(type,base,cur,cnt,init) \
529 if (expect_false ((cnt) > (cur))) \ 1007 if (expect_false ((cnt) > (cur))) \
530 { \ 1008 { \
531 int ocur_ = (cur); \ 1009 int ecb_unused ocur_ = (cur); \
532 (base) = (type *)array_realloc \ 1010 (base) = (type *)array_realloc \
533 (sizeof (type), (base), &(cur), (cnt)); \ 1011 (sizeof (type), (base), &(cur), (cnt)); \
534 init ((base) + (ocur_), (cur) - ocur_); \ 1012 init ((base) + (ocur_), (cur) - ocur_); \
535 } 1013 }
536 1014
… …
543 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 1021 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
544 } 1022 }
545#endif 1023#endif
546 1024
547#define array_free(stem, idx) \ 1025#define array_free(stem, idx) \
548 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 1026 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
549 1027
550/*****************************************************************************/ 1028/*****************************************************************************/
1029
1030/* dummy callback for pending events */
1031static void noinline
1032pendingcb (EV_P_ ev_prepare *w, int revents)
1033{
1034}
551 1035
552void noinline 1036void noinline
553ev_feed_event (EV_P_ void *w, int revents) 1037ev_feed_event (EV_P_ void *w, int revents)
554{ 1038{
555 W w_ = (W)w; 1039 W w_ = (W)w;
… …
564 pendings [pri][w_->pending - 1].w = w_; 1048 pendings [pri][w_->pending - 1].w = w_;
565 pendings [pri][w_->pending - 1].events = revents; 1049 pendings [pri][w_->pending - 1].events = revents;
566 } 1050 }
567} 1051}
568 1052
569void inline_speed 1053inline_speed void
1054feed_reverse (EV_P_ W w)
1055{
1056 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
1057 rfeeds [rfeedcnt++] = w;
1058}
1059
1060inline_size void
1061feed_reverse_done (EV_P_ int revents)
1062{
1063 do
1064 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
1065 while (rfeedcnt);
1066}
1067
1068inline_speed void
570queue_events (EV_P_ W *events, int eventcnt, int type) 1069queue_events (EV_P_ W *events, int eventcnt, int type)
571{ 1070{
572 int i; 1071 int i;
573 1072
574 for (i = 0; i < eventcnt; ++i) 1073 for (i = 0; i < eventcnt; ++i)
575 ev_feed_event (EV_A_ events [i], type); 1074 ev_feed_event (EV_A_ events [i], type);
576} 1075}
577 1076
578/*****************************************************************************/ 1077/*****************************************************************************/
579 1078
580void inline_size 1079inline_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) 1080fd_event_nocheck (EV_P_ int fd, int revents)
595{ 1081{
596 ANFD *anfd = anfds + fd; 1082 ANFD *anfd = anfds + fd;
597 ev_io *w; 1083 ev_io *w;
598 1084
599 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1085 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
603 if (ev) 1089 if (ev)
604 ev_feed_event (EV_A_ (W)w, ev); 1090 ev_feed_event (EV_A_ (W)w, ev);
605 } 1091 }
606} 1092}
607 1093
1094/* do not submit kernel events for fds that have reify set */
1095/* because that means they changed while we were polling for new events */
1096inline_speed void
1097fd_event (EV_P_ int fd, int revents)
1098{
1099 ANFD *anfd = anfds + fd;
1100
1101 if (expect_true (!anfd->reify))
1102 fd_event_nocheck (EV_A_ fd, revents);
1103}
1104
608void 1105void
609ev_feed_fd_event (EV_P_ int fd, int revents) 1106ev_feed_fd_event (EV_P_ int fd, int revents)
610{ 1107{
611 if (fd >= 0 && fd < anfdmax) 1108 if (fd >= 0 && fd < anfdmax)
612 fd_event (EV_A_ fd, revents); 1109 fd_event_nocheck (EV_A_ fd, revents);
613} 1110}
614 1111
615void inline_size 1112/* make sure the external fd watch events are in-sync */
1113/* with the kernel/libev internal state */
1114inline_size void
616fd_reify (EV_P) 1115fd_reify (EV_P)
617{ 1116{
618 int i; 1117 int i;
1118
1119#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1120 for (i = 0; i < fdchangecnt; ++i)
1121 {
1122 int fd = fdchanges [i];
1123 ANFD *anfd = anfds + fd;
1124
1125 if (anfd->reify & EV__IOFDSET && anfd->head)
1126 {
1127 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1128
1129 if (handle != anfd->handle)
1130 {
1131 unsigned long arg;
1132
1133 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1134
1135 /* handle changed, but fd didn't - we need to do it in two steps */
1136 backend_modify (EV_A_ fd, anfd->events, 0);
1137 anfd->events = 0;
1138 anfd->handle = handle;
1139 }
1140 }
1141 }
1142#endif
619 1143
620 for (i = 0; i < fdchangecnt; ++i) 1144 for (i = 0; i < fdchangecnt; ++i)
621 { 1145 {
622 int fd = fdchanges [i]; 1146 int fd = fdchanges [i];
623 ANFD *anfd = anfds + fd; 1147 ANFD *anfd = anfds + fd;
624 ev_io *w; 1148 ev_io *w;
625 1149
626 unsigned char events = 0; 1150 unsigned char o_events = anfd->events;
1151 unsigned char o_reify = anfd->reify;
627 1152
628 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1153 anfd->reify = 0;
629 events |= (unsigned char)w->events;
630 1154
631#if EV_SELECT_IS_WINSOCKET 1155 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
632 if (events)
633 { 1156 {
634 unsigned long argp; 1157 anfd->events = 0;
635 #ifdef EV_FD_TO_WIN32_HANDLE 1158
636 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1159 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
637 #else 1160 anfd->events |= (unsigned char)w->events;
638 anfd->handle = _get_osfhandle (fd); 1161
639 #endif 1162 if (o_events != anfd->events)
640 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 1163 o_reify = EV__IOFDSET; /* actually |= */
641 } 1164 }
642#endif
643 1165
644 { 1166 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); 1167 backend_modify (EV_A_ fd, o_events, anfd->events);
653 }
654 } 1168 }
655 1169
656 fdchangecnt = 0; 1170 fdchangecnt = 0;
657} 1171}
658 1172
659void inline_size 1173/* something about the given fd changed */
1174inline_size void
660fd_change (EV_P_ int fd, int flags) 1175fd_change (EV_P_ int fd, int flags)
661{ 1176{
662 unsigned char reify = anfds [fd].reify; 1177 unsigned char reify = anfds [fd].reify;
663 anfds [fd].reify |= flags; 1178 anfds [fd].reify |= flags;
664 1179
… …
668 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1183 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
669 fdchanges [fdchangecnt - 1] = fd; 1184 fdchanges [fdchangecnt - 1] = fd;
670 } 1185 }
671} 1186}
672 1187
673void inline_speed 1188/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1189inline_speed void ecb_cold
674fd_kill (EV_P_ int fd) 1190fd_kill (EV_P_ int fd)
675{ 1191{
676 ev_io *w; 1192 ev_io *w;
677 1193
678 while ((w = (ev_io *)anfds [fd].head)) 1194 while ((w = (ev_io *)anfds [fd].head))
… …
680 ev_io_stop (EV_A_ w); 1196 ev_io_stop (EV_A_ w);
681 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1197 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
682 } 1198 }
683} 1199}
684 1200
685int inline_size 1201/* check whether the given fd is actually valid, for error recovery */
1202inline_size int ecb_cold
686fd_valid (int fd) 1203fd_valid (int fd)
687{ 1204{
688#ifdef _WIN32 1205#ifdef _WIN32
689 return _get_osfhandle (fd) != -1; 1206 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
690#else 1207#else
691 return fcntl (fd, F_GETFD) != -1; 1208 return fcntl (fd, F_GETFD) != -1;
692#endif 1209#endif
693} 1210}
694 1211
695/* called on EBADF to verify fds */ 1212/* called on EBADF to verify fds */
696static void noinline 1213static void noinline ecb_cold
697fd_ebadf (EV_P) 1214fd_ebadf (EV_P)
698{ 1215{
699 int fd; 1216 int fd;
700 1217
701 for (fd = 0; fd < anfdmax; ++fd) 1218 for (fd = 0; fd < anfdmax; ++fd)
702 if (anfds [fd].events) 1219 if (anfds [fd].events)
703 if (!fd_valid (fd) == -1 && errno == EBADF) 1220 if (!fd_valid (fd) && errno == EBADF)
704 fd_kill (EV_A_ fd); 1221 fd_kill (EV_A_ fd);
705} 1222}
706 1223
707/* called on ENOMEM in select/poll to kill some fds and retry */ 1224/* called on ENOMEM in select/poll to kill some fds and retry */
708static void noinline 1225static void noinline ecb_cold
709fd_enomem (EV_P) 1226fd_enomem (EV_P)
710{ 1227{
711 int fd; 1228 int fd;
712 1229
713 for (fd = anfdmax; fd--; ) 1230 for (fd = anfdmax; fd--; )
714 if (anfds [fd].events) 1231 if (anfds [fd].events)
715 { 1232 {
716 fd_kill (EV_A_ fd); 1233 fd_kill (EV_A_ fd);
717 return; 1234 break;
718 } 1235 }
719} 1236}
720 1237
721/* usually called after fork if backend needs to re-arm all fds from scratch */ 1238/* usually called after fork if backend needs to re-arm all fds from scratch */
722static void noinline 1239static void noinline
… …
726 1243
727 for (fd = 0; fd < anfdmax; ++fd) 1244 for (fd = 0; fd < anfdmax; ++fd)
728 if (anfds [fd].events) 1245 if (anfds [fd].events)
729 { 1246 {
730 anfds [fd].events = 0; 1247 anfds [fd].events = 0;
1248 anfds [fd].emask = 0;
731 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1249 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
732 } 1250 }
733} 1251}
734 1252
735/*****************************************************************************/ 1253/* used to prepare libev internal fd's */
736 1254/* this is not fork-safe */
737void inline_speed 1255inline_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) 1256fd_intern (int fd)
822{ 1257{
823#ifdef _WIN32 1258#ifdef _WIN32
824 int arg = 1; 1259 unsigned long arg = 1;
825 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 1260 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
826#else 1261#else
827 fcntl (fd, F_SETFD, FD_CLOEXEC); 1262 fcntl (fd, F_SETFD, FD_CLOEXEC);
828 fcntl (fd, F_SETFL, O_NONBLOCK); 1263 fcntl (fd, F_SETFL, O_NONBLOCK);
829#endif 1264#endif
830} 1265}
831 1266
1267/*****************************************************************************/
1268
1269/*
1270 * the heap functions want a real array index. array index 0 is guaranteed to not
1271 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1272 * the branching factor of the d-tree.
1273 */
1274
1275/*
1276 * at the moment we allow libev the luxury of two heaps,
1277 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap
1278 * which is more cache-efficient.
1279 * the difference is about 5% with 50000+ watchers.
1280 */
1281#if EV_USE_4HEAP
1282
1283#define DHEAP 4
1284#define HEAP0 (DHEAP - 1) /* index of first element in heap */
1285#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
1286#define UPHEAP_DONE(p,k) ((p) == (k))
1287
1288/* away from the root */
1289inline_speed void
1290downheap (ANHE *heap, int N, int k)
1291{
1292 ANHE he = heap [k];
1293 ANHE *E = heap + N + HEAP0;
1294
1295 for (;;)
1296 {
1297 ev_tstamp minat;
1298 ANHE *minpos;
1299 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1300
1301 /* find minimum child */
1302 if (expect_true (pos + DHEAP - 1 < E))
1303 {
1304 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1305 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1306 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1307 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1308 }
1309 else if (pos < E)
1310 {
1311 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1312 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1313 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1314 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1315 }
1316 else
1317 break;
1318
1319 if (ANHE_at (he) <= minat)
1320 break;
1321
1322 heap [k] = *minpos;
1323 ev_active (ANHE_w (*minpos)) = k;
1324
1325 k = minpos - heap;
1326 }
1327
1328 heap [k] = he;
1329 ev_active (ANHE_w (he)) = k;
1330}
1331
1332#else /* 4HEAP */
1333
1334#define HEAP0 1
1335#define HPARENT(k) ((k) >> 1)
1336#define UPHEAP_DONE(p,k) (!(p))
1337
1338/* away from the root */
1339inline_speed void
1340downheap (ANHE *heap, int N, int k)
1341{
1342 ANHE he = heap [k];
1343
1344 for (;;)
1345 {
1346 int c = k << 1;
1347
1348 if (c >= N + HEAP0)
1349 break;
1350
1351 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
1352 ? 1 : 0;
1353
1354 if (ANHE_at (he) <= ANHE_at (heap [c]))
1355 break;
1356
1357 heap [k] = heap [c];
1358 ev_active (ANHE_w (heap [k])) = k;
1359
1360 k = c;
1361 }
1362
1363 heap [k] = he;
1364 ev_active (ANHE_w (he)) = k;
1365}
1366#endif
1367
1368/* towards the root */
1369inline_speed void
1370upheap (ANHE *heap, int k)
1371{
1372 ANHE he = heap [k];
1373
1374 for (;;)
1375 {
1376 int p = HPARENT (k);
1377
1378 if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
1379 break;
1380
1381 heap [k] = heap [p];
1382 ev_active (ANHE_w (heap [k])) = k;
1383 k = p;
1384 }
1385
1386 heap [k] = he;
1387 ev_active (ANHE_w (he)) = k;
1388}
1389
1390/* move an element suitably so it is in a correct place */
1391inline_size void
1392adjustheap (ANHE *heap, int N, int k)
1393{
1394 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1395 upheap (heap, k);
1396 else
1397 downheap (heap, N, k);
1398}
1399
1400/* rebuild the heap: this function is used only once and executed rarely */
1401inline_size void
1402reheap (ANHE *heap, int N)
1403{
1404 int i;
1405
1406 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
1407 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
1408 for (i = 0; i < N; ++i)
1409 upheap (heap, i + HEAP0);
1410}
1411
1412/*****************************************************************************/
1413
1414/* associate signal watchers to a signal signal */
1415typedef struct
1416{
1417 EV_ATOMIC_T pending;
1418#if EV_MULTIPLICITY
1419 EV_P;
1420#endif
1421 WL head;
1422} ANSIG;
1423
1424static ANSIG signals [EV_NSIG - 1];
1425
1426/*****************************************************************************/
1427
1428#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1429
832static void noinline 1430static void noinline ecb_cold
833evpipe_init (EV_P) 1431evpipe_init (EV_P)
834{ 1432{
835 if (!ev_is_active (&pipeev)) 1433 if (!ev_is_active (&pipe_w))
836 { 1434 {
837#if EV_USE_EVENTFD 1435# if EV_USE_EVENTFD
1436 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1437 if (evfd < 0 && errno == EINVAL)
838 if ((evfd = eventfd (0, 0)) >= 0) 1438 evfd = eventfd (0, 0);
1439
1440 if (evfd >= 0)
839 { 1441 {
840 evpipe [0] = -1; 1442 evpipe [0] = -1;
841 fd_intern (evfd); 1443 fd_intern (evfd); /* doing it twice doesn't hurt */
842 ev_io_set (&pipeev, evfd, EV_READ); 1444 ev_io_set (&pipe_w, evfd, EV_READ);
843 } 1445 }
844 else 1446 else
845#endif 1447# endif
846 { 1448 {
847 while (pipe (evpipe)) 1449 while (pipe (evpipe))
848 syserr ("(libev) error creating signal/async pipe"); 1450 ev_syserr ("(libev) error creating signal/async pipe");
849 1451
850 fd_intern (evpipe [0]); 1452 fd_intern (evpipe [0]);
851 fd_intern (evpipe [1]); 1453 fd_intern (evpipe [1]);
852 ev_io_set (&pipeev, evpipe [0], EV_READ); 1454 ev_io_set (&pipe_w, evpipe [0], EV_READ);
853 } 1455 }
854 1456
855 ev_io_start (EV_A_ &pipeev); 1457 ev_io_start (EV_A_ &pipe_w);
856 ev_unref (EV_A); /* watcher should not keep loop alive */ 1458 ev_unref (EV_A); /* watcher should not keep loop alive */
857 } 1459 }
858} 1460}
859 1461
860void inline_size 1462inline_speed void
861evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1463evpipe_write (EV_P_ EV_ATOMIC_T *flag)
862{ 1464{
863 if (!*flag) 1465 if (expect_true (*flag))
1466 return;
1467
1468 *flag = 1;
1469
1470 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1471
1472 pipe_write_skipped = 1;
1473
1474 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1475
1476 if (pipe_write_wanted)
864 { 1477 {
1478 int old_errno;
1479
1480 pipe_write_skipped = 0; /* just an optimsiation, no fence needed */
1481
865 int old_errno = errno; /* save errno because write might clobber it */ 1482 old_errno = errno; /* save errno because write will clobber it */
866
867 *flag = 1;
868 1483
869#if EV_USE_EVENTFD 1484#if EV_USE_EVENTFD
870 if (evfd >= 0) 1485 if (evfd >= 0)
871 { 1486 {
872 uint64_t counter = 1; 1487 uint64_t counter = 1;
873 write (evfd, &counter, sizeof (uint64_t)); 1488 write (evfd, &counter, sizeof (uint64_t));
874 } 1489 }
875 else 1490 else
876#endif 1491#endif
1492 {
1493 /* win32 people keep sending patches that change this write() to send() */
1494 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1495 /* so when you think this write should be a send instead, please find out */
1496 /* where your send() is from - it's definitely not the microsoft send, and */
1497 /* tell me. thank you. */
877 write (evpipe [1], &old_errno, 1); 1498 write (evpipe [1], &(evpipe [1]), 1);
1499 }
878 1500
879 errno = old_errno; 1501 errno = old_errno;
880 } 1502 }
881} 1503}
882 1504
1505/* called whenever the libev signal pipe */
1506/* got some events (signal, async) */
883static void 1507static void
884pipecb (EV_P_ ev_io *iow, int revents) 1508pipecb (EV_P_ ev_io *iow, int revents)
885{ 1509{
1510 int i;
1511
1512 if (revents & EV_READ)
1513 {
886#if EV_USE_EVENTFD 1514#if EV_USE_EVENTFD
887 if (evfd >= 0) 1515 if (evfd >= 0)
888 { 1516 {
889 uint64_t counter = 1; 1517 uint64_t counter;
890 read (evfd, &counter, sizeof (uint64_t)); 1518 read (evfd, &counter, sizeof (uint64_t));
891 } 1519 }
892 else 1520 else
893#endif 1521#endif
894 { 1522 {
895 char dummy; 1523 char dummy;
1524 /* see discussion in evpipe_write when you think this read should be recv in win32 */
896 read (evpipe [0], &dummy, 1); 1525 read (evpipe [0], &dummy, 1);
1526 }
1527 }
1528
1529 pipe_write_skipped = 0;
1530
1531#if EV_SIGNAL_ENABLE
1532 if (sig_pending)
897 } 1533 {
1534 sig_pending = 0;
898 1535
899 if (gotsig && ev_is_default_loop (EV_A)) 1536 for (i = EV_NSIG - 1; i--; )
900 { 1537 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); 1538 ev_feed_signal_event (EV_A_ i + 1);
907 } 1539 }
1540#endif
908 1541
909#if EV_ASYNC_ENABLE 1542#if EV_ASYNC_ENABLE
910 if (gotasync) 1543 if (async_pending)
911 { 1544 {
912 int i; 1545 async_pending = 0;
913 gotasync = 0;
914 1546
915 for (i = asynccnt; i--; ) 1547 for (i = asynccnt; i--; )
916 if (asyncs [i]->sent) 1548 if (asyncs [i]->sent)
917 { 1549 {
918 asyncs [i]->sent = 0; 1550 asyncs [i]->sent = 0;
… …
922#endif 1554#endif
923} 1555}
924 1556
925/*****************************************************************************/ 1557/*****************************************************************************/
926 1558
1559void
1560ev_feed_signal (int signum)
1561{
1562#if EV_MULTIPLICITY
1563 EV_P = signals [signum - 1].loop;
1564
1565 if (!EV_A)
1566 return;
1567#endif
1568
1569 if (!ev_active (&pipe_w))
1570 return;
1571
1572 signals [signum - 1].pending = 1;
1573 evpipe_write (EV_A_ &sig_pending);
1574}
1575
927static void 1576static void
928ev_sighandler (int signum) 1577ev_sighandler (int signum)
929{ 1578{
930#if EV_MULTIPLICITY
931 struct ev_loop *loop = &default_loop_struct;
932#endif
933
934#if _WIN32 1579#ifdef _WIN32
935 signal (signum, ev_sighandler); 1580 signal (signum, ev_sighandler);
936#endif 1581#endif
937 1582
938 signals [signum - 1].gotsig = 1; 1583 ev_feed_signal (signum);
939 evpipe_write (EV_A_ &gotsig);
940} 1584}
941 1585
942void noinline 1586void noinline
943ev_feed_signal_event (EV_P_ int signum) 1587ev_feed_signal_event (EV_P_ int signum)
944{ 1588{
945 WL w; 1589 WL w;
946 1590
1591 if (expect_false (signum <= 0 || signum > EV_NSIG))
1592 return;
1593
1594 --signum;
1595
947#if EV_MULTIPLICITY 1596#if EV_MULTIPLICITY
948 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1597 /* it is permissible to try to feed a signal to the wrong loop */
949#endif 1598 /* or, likely more useful, feeding a signal nobody is waiting for */
950 1599
951 --signum; 1600 if (expect_false (signals [signum].loop != EV_A))
952
953 if (signum < 0 || signum >= signalmax)
954 return; 1601 return;
1602#endif
955 1603
956 signals [signum].gotsig = 0; 1604 signals [signum].pending = 0;
957 1605
958 for (w = signals [signum].head; w; w = w->next) 1606 for (w = signals [signum].head; w; w = w->next)
959 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1607 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
960} 1608}
961 1609
1610#if EV_USE_SIGNALFD
1611static void
1612sigfdcb (EV_P_ ev_io *iow, int revents)
1613{
1614 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1615
1616 for (;;)
1617 {
1618 ssize_t res = read (sigfd, si, sizeof (si));
1619
1620 /* not ISO-C, as res might be -1, but works with SuS */
1621 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1622 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1623
1624 if (res < (ssize_t)sizeof (si))
1625 break;
1626 }
1627}
1628#endif
1629
1630#endif
1631
962/*****************************************************************************/ 1632/*****************************************************************************/
963 1633
1634#if EV_CHILD_ENABLE
964static WL childs [EV_PID_HASHSIZE]; 1635static WL childs [EV_PID_HASHSIZE];
965
966#ifndef _WIN32
967 1636
968static ev_signal childev; 1637static ev_signal childev;
969 1638
970#ifndef WIFCONTINUED 1639#ifndef WIFCONTINUED
971# define WIFCONTINUED(status) 0 1640# define WIFCONTINUED(status) 0
972#endif 1641#endif
973 1642
974void inline_speed 1643/* handle a single child status event */
1644inline_speed void
975child_reap (EV_P_ int chain, int pid, int status) 1645child_reap (EV_P_ int chain, int pid, int status)
976{ 1646{
977 ev_child *w; 1647 ev_child *w;
978 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1648 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
979 1649
980 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1650 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
981 { 1651 {
982 if ((w->pid == pid || !w->pid) 1652 if ((w->pid == pid || !w->pid)
983 && (!traced || (w->flags & 1))) 1653 && (!traced || (w->flags & 1)))
984 { 1654 {
985 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1655 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
992 1662
993#ifndef WCONTINUED 1663#ifndef WCONTINUED
994# define WCONTINUED 0 1664# define WCONTINUED 0
995#endif 1665#endif
996 1666
1667/* called on sigchld etc., calls waitpid */
997static void 1668static void
998childcb (EV_P_ ev_signal *sw, int revents) 1669childcb (EV_P_ ev_signal *sw, int revents)
999{ 1670{
1000 int pid, status; 1671 int pid, status;
1001 1672
… …
1009 /* make sure we are called again until all children have been reaped */ 1680 /* 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 */ 1681 /* 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); 1682 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1012 1683
1013 child_reap (EV_A_ pid, pid, status); 1684 child_reap (EV_A_ pid, pid, status);
1014 if (EV_PID_HASHSIZE > 1) 1685 if ((EV_PID_HASHSIZE) > 1)
1015 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1686 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1016} 1687}
1017 1688
1018#endif 1689#endif
1019 1690
1020/*****************************************************************************/ 1691/*****************************************************************************/
1021 1692
1693#if EV_USE_IOCP
1694# include "ev_iocp.c"
1695#endif
1022#if EV_USE_PORT 1696#if EV_USE_PORT
1023# include "ev_port.c" 1697# include "ev_port.c"
1024#endif 1698#endif
1025#if EV_USE_KQUEUE 1699#if EV_USE_KQUEUE
1026# include "ev_kqueue.c" 1700# include "ev_kqueue.c"
… …
1033#endif 1707#endif
1034#if EV_USE_SELECT 1708#if EV_USE_SELECT
1035# include "ev_select.c" 1709# include "ev_select.c"
1036#endif 1710#endif
1037 1711
1038int 1712int ecb_cold
1039ev_version_major (void) 1713ev_version_major (void)
1040{ 1714{
1041 return EV_VERSION_MAJOR; 1715 return EV_VERSION_MAJOR;
1042} 1716}
1043 1717
1044int 1718int ecb_cold
1045ev_version_minor (void) 1719ev_version_minor (void)
1046{ 1720{
1047 return EV_VERSION_MINOR; 1721 return EV_VERSION_MINOR;
1048} 1722}
1049 1723
1050/* return true if we are running with elevated privileges and should ignore env variables */ 1724/* return true if we are running with elevated privileges and should ignore env variables */
1051int inline_size 1725int inline_size ecb_cold
1052enable_secure (void) 1726enable_secure (void)
1053{ 1727{
1054#ifdef _WIN32 1728#ifdef _WIN32
1055 return 0; 1729 return 0;
1056#else 1730#else
1057 return getuid () != geteuid () 1731 return getuid () != geteuid ()
1058 || getgid () != getegid (); 1732 || getgid () != getegid ();
1059#endif 1733#endif
1060} 1734}
1061 1735
1062unsigned int 1736unsigned int ecb_cold
1063ev_supported_backends (void) 1737ev_supported_backends (void)
1064{ 1738{
1065 unsigned int flags = 0; 1739 unsigned int flags = 0;
1066 1740
1067 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 1741 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1071 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 1745 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1072 1746
1073 return flags; 1747 return flags;
1074} 1748}
1075 1749
1076unsigned int 1750unsigned int ecb_cold
1077ev_recommended_backends (void) 1751ev_recommended_backends (void)
1078{ 1752{
1079 unsigned int flags = ev_supported_backends (); 1753 unsigned int flags = ev_supported_backends ();
1080 1754
1081#ifndef __NetBSD__ 1755#ifndef __NetBSD__
1082 /* kqueue is borked on everything but netbsd apparently */ 1756 /* kqueue is borked on everything but netbsd apparently */
1083 /* it usually doesn't work correctly on anything but sockets and pipes */ 1757 /* it usually doesn't work correctly on anything but sockets and pipes */
1084 flags &= ~EVBACKEND_KQUEUE; 1758 flags &= ~EVBACKEND_KQUEUE;
1085#endif 1759#endif
1086#ifdef __APPLE__ 1760#ifdef __APPLE__
1087 // flags &= ~EVBACKEND_KQUEUE; for documentation 1761 /* only select works correctly on that "unix-certified" platform */
1088 flags &= ~EVBACKEND_POLL; 1762 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1763 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1764#endif
1765#ifdef __FreeBSD__
1766 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1089#endif 1767#endif
1090 1768
1091 return flags; 1769 return flags;
1092} 1770}
1093 1771
1094unsigned int 1772unsigned int ecb_cold
1095ev_embeddable_backends (void) 1773ev_embeddable_backends (void)
1096{ 1774{
1097 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1775 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1098 1776
1099 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 1777 /* 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 */ 1778 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1101 flags &= ~EVBACKEND_EPOLL; 1779 flags &= ~EVBACKEND_EPOLL;
1102 1780
1103 return flags; 1781 return flags;
1104} 1782}
1105 1783
1106unsigned int 1784unsigned int
1107ev_backend (EV_P) 1785ev_backend (EV_P)
1108{ 1786{
1109 return backend; 1787 return backend;
1110} 1788}
1111 1789
1790#if EV_FEATURE_API
1112unsigned int 1791unsigned int
1113ev_loop_count (EV_P) 1792ev_iteration (EV_P)
1114{ 1793{
1115 return loop_count; 1794 return loop_count;
1795}
1796
1797unsigned int
1798ev_depth (EV_P)
1799{
1800 return loop_depth;
1116} 1801}
1117 1802
1118void 1803void
1119ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1804ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1120{ 1805{
… …
1125ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1810ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1126{ 1811{
1127 timeout_blocktime = interval; 1812 timeout_blocktime = interval;
1128} 1813}
1129 1814
1815void
1816ev_set_userdata (EV_P_ void *data)
1817{
1818 userdata = data;
1819}
1820
1821void *
1822ev_userdata (EV_P)
1823{
1824 return userdata;
1825}
1826
1827void
1828ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1829{
1830 invoke_cb = invoke_pending_cb;
1831}
1832
1833void
1834ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1835{
1836 release_cb = release;
1837 acquire_cb = acquire;
1838}
1839#endif
1840
1841/* initialise a loop structure, must be zero-initialised */
1130static void noinline 1842static void noinline ecb_cold
1131loop_init (EV_P_ unsigned int flags) 1843loop_init (EV_P_ unsigned int flags)
1132{ 1844{
1133 if (!backend) 1845 if (!backend)
1134 { 1846 {
1847 origflags = flags;
1848
1849#if EV_USE_REALTIME
1850 if (!have_realtime)
1851 {
1852 struct timespec ts;
1853
1854 if (!clock_gettime (CLOCK_REALTIME, &ts))
1855 have_realtime = 1;
1856 }
1857#endif
1858
1135#if EV_USE_MONOTONIC 1859#if EV_USE_MONOTONIC
1860 if (!have_monotonic)
1136 { 1861 {
1137 struct timespec ts; 1862 struct timespec ts;
1863
1138 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1864 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1139 have_monotonic = 1; 1865 have_monotonic = 1;
1140 } 1866 }
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 1867#endif
1156 1868
1157 /* pid check not overridable via env */ 1869 /* pid check not overridable via env */
1158#ifndef _WIN32 1870#ifndef _WIN32
1159 if (flags & EVFLAG_FORKCHECK) 1871 if (flags & EVFLAG_FORKCHECK)
… …
1163 if (!(flags & EVFLAG_NOENV) 1875 if (!(flags & EVFLAG_NOENV)
1164 && !enable_secure () 1876 && !enable_secure ()
1165 && getenv ("LIBEV_FLAGS")) 1877 && getenv ("LIBEV_FLAGS"))
1166 flags = atoi (getenv ("LIBEV_FLAGS")); 1878 flags = atoi (getenv ("LIBEV_FLAGS"));
1167 1879
1168 if (!(flags & 0x0000ffffUL)) 1880 ev_rt_now = ev_time ();
1881 mn_now = get_clock ();
1882 now_floor = mn_now;
1883 rtmn_diff = ev_rt_now - mn_now;
1884#if EV_FEATURE_API
1885 invoke_cb = ev_invoke_pending;
1886#endif
1887
1888 io_blocktime = 0.;
1889 timeout_blocktime = 0.;
1890 backend = 0;
1891 backend_fd = -1;
1892 sig_pending = 0;
1893#if EV_ASYNC_ENABLE
1894 async_pending = 0;
1895#endif
1896 pipe_write_skipped = 0;
1897 pipe_write_wanted = 0;
1898#if EV_USE_INOTIFY
1899 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1900#endif
1901#if EV_USE_SIGNALFD
1902 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1903#endif
1904
1905 if (!(flags & EVBACKEND_MASK))
1169 flags |= ev_recommended_backends (); 1906 flags |= ev_recommended_backends ();
1170 1907
1908#if EV_USE_IOCP
1909 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1910#endif
1171#if EV_USE_PORT 1911#if EV_USE_PORT
1172 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1912 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1173#endif 1913#endif
1174#if EV_USE_KQUEUE 1914#if EV_USE_KQUEUE
1175 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1915 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1182#endif 1922#endif
1183#if EV_USE_SELECT 1923#if EV_USE_SELECT
1184 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1924 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1185#endif 1925#endif
1186 1926
1927 ev_prepare_init (&pending_w, pendingcb);
1928
1929#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1187 ev_init (&pipeev, pipecb); 1930 ev_init (&pipe_w, pipecb);
1188 ev_set_priority (&pipeev, EV_MAXPRI); 1931 ev_set_priority (&pipe_w, EV_MAXPRI);
1932#endif
1189 } 1933 }
1190} 1934}
1191 1935
1192static void noinline 1936/* free up a loop structure */
1937void ecb_cold
1193loop_destroy (EV_P) 1938ev_loop_destroy (EV_P)
1194{ 1939{
1195 int i; 1940 int i;
1196 1941
1942#if EV_MULTIPLICITY
1943 /* mimic free (0) */
1944 if (!EV_A)
1945 return;
1946#endif
1947
1948#if EV_CLEANUP_ENABLE
1949 /* queue cleanup watchers (and execute them) */
1950 if (expect_false (cleanupcnt))
1951 {
1952 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1953 EV_INVOKE_PENDING;
1954 }
1955#endif
1956
1957#if EV_CHILD_ENABLE
1958 if (ev_is_active (&childev))
1959 {
1960 ev_ref (EV_A); /* child watcher */
1961 ev_signal_stop (EV_A_ &childev);
1962 }
1963#endif
1964
1197 if (ev_is_active (&pipeev)) 1965 if (ev_is_active (&pipe_w))
1198 { 1966 {
1199 ev_ref (EV_A); /* signal watcher */ 1967 /*ev_ref (EV_A);*/
1200 ev_io_stop (EV_A_ &pipeev); 1968 /*ev_io_stop (EV_A_ &pipe_w);*/
1201 1969
1202#if EV_USE_EVENTFD 1970#if EV_USE_EVENTFD
1203 if (evfd >= 0) 1971 if (evfd >= 0)
1204 close (evfd); 1972 close (evfd);
1205#endif 1973#endif
1206 1974
1207 if (evpipe [0] >= 0) 1975 if (evpipe [0] >= 0)
1208 { 1976 {
1209 close (evpipe [0]); 1977 EV_WIN32_CLOSE_FD (evpipe [0]);
1210 close (evpipe [1]); 1978 EV_WIN32_CLOSE_FD (evpipe [1]);
1211 } 1979 }
1212 } 1980 }
1981
1982#if EV_USE_SIGNALFD
1983 if (ev_is_active (&sigfd_w))
1984 close (sigfd);
1985#endif
1213 1986
1214#if EV_USE_INOTIFY 1987#if EV_USE_INOTIFY
1215 if (fs_fd >= 0) 1988 if (fs_fd >= 0)
1216 close (fs_fd); 1989 close (fs_fd);
1217#endif 1990#endif
1218 1991
1219 if (backend_fd >= 0) 1992 if (backend_fd >= 0)
1220 close (backend_fd); 1993 close (backend_fd);
1221 1994
1995#if EV_USE_IOCP
1996 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1997#endif
1222#if EV_USE_PORT 1998#if EV_USE_PORT
1223 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1999 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1224#endif 2000#endif
1225#if EV_USE_KQUEUE 2001#if EV_USE_KQUEUE
1226 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2002 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1241#if EV_IDLE_ENABLE 2017#if EV_IDLE_ENABLE
1242 array_free (idle, [i]); 2018 array_free (idle, [i]);
1243#endif 2019#endif
1244 } 2020 }
1245 2021
1246 ev_free (anfds); anfdmax = 0; 2022 ev_free (anfds); anfds = 0; anfdmax = 0;
1247 2023
1248 /* have to use the microsoft-never-gets-it-right macro */ 2024 /* have to use the microsoft-never-gets-it-right macro */
2025 array_free (rfeed, EMPTY);
1249 array_free (fdchange, EMPTY); 2026 array_free (fdchange, EMPTY);
1250 array_free (timer, EMPTY); 2027 array_free (timer, EMPTY);
1251#if EV_PERIODIC_ENABLE 2028#if EV_PERIODIC_ENABLE
1252 array_free (periodic, EMPTY); 2029 array_free (periodic, EMPTY);
1253#endif 2030#endif
1254#if EV_FORK_ENABLE 2031#if EV_FORK_ENABLE
1255 array_free (fork, EMPTY); 2032 array_free (fork, EMPTY);
1256#endif 2033#endif
2034#if EV_CLEANUP_ENABLE
2035 array_free (cleanup, EMPTY);
2036#endif
1257 array_free (prepare, EMPTY); 2037 array_free (prepare, EMPTY);
1258 array_free (check, EMPTY); 2038 array_free (check, EMPTY);
1259#if EV_ASYNC_ENABLE 2039#if EV_ASYNC_ENABLE
1260 array_free (async, EMPTY); 2040 array_free (async, EMPTY);
1261#endif 2041#endif
1262 2042
1263 backend = 0; 2043 backend = 0;
1264}
1265 2044
2045#if EV_MULTIPLICITY
2046 if (ev_is_default_loop (EV_A))
2047#endif
2048 ev_default_loop_ptr = 0;
2049#if EV_MULTIPLICITY
2050 else
2051 ev_free (EV_A);
2052#endif
2053}
2054
2055#if EV_USE_INOTIFY
1266void inline_size infy_fork (EV_P); 2056inline_size void infy_fork (EV_P);
2057#endif
1267 2058
1268void inline_size 2059inline_size void
1269loop_fork (EV_P) 2060loop_fork (EV_P)
1270{ 2061{
1271#if EV_USE_PORT 2062#if EV_USE_PORT
1272 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 2063 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1273#endif 2064#endif
… …
1279#endif 2070#endif
1280#if EV_USE_INOTIFY 2071#if EV_USE_INOTIFY
1281 infy_fork (EV_A); 2072 infy_fork (EV_A);
1282#endif 2073#endif
1283 2074
1284 if (ev_is_active (&pipeev)) 2075 if (ev_is_active (&pipe_w))
1285 { 2076 {
1286 /* this "locks" the handlers against writing to the pipe */ 2077 /* 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 2078
1293 ev_ref (EV_A); 2079 ev_ref (EV_A);
1294 ev_io_stop (EV_A_ &pipeev); 2080 ev_io_stop (EV_A_ &pipe_w);
1295 2081
1296#if EV_USE_EVENTFD 2082#if EV_USE_EVENTFD
1297 if (evfd >= 0) 2083 if (evfd >= 0)
1298 close (evfd); 2084 close (evfd);
1299#endif 2085#endif
1300 2086
1301 if (evpipe [0] >= 0) 2087 if (evpipe [0] >= 0)
1302 { 2088 {
1303 close (evpipe [0]); 2089 EV_WIN32_CLOSE_FD (evpipe [0]);
1304 close (evpipe [1]); 2090 EV_WIN32_CLOSE_FD (evpipe [1]);
1305 } 2091 }
1306 2092
2093#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1307 evpipe_init (EV_A); 2094 evpipe_init (EV_A);
1308 /* now iterate over everything, in case we missed something */ 2095 /* now iterate over everything, in case we missed something */
1309 pipecb (EV_A_ &pipeev, EV_READ); 2096 pipecb (EV_A_ &pipe_w, EV_READ);
2097#endif
1310 } 2098 }
1311 2099
1312 postfork = 0; 2100 postfork = 0;
1313} 2101}
1314 2102
1315#if EV_MULTIPLICITY 2103#if EV_MULTIPLICITY
2104
1316struct ev_loop * 2105struct ev_loop * ecb_cold
1317ev_loop_new (unsigned int flags) 2106ev_loop_new (unsigned int flags)
1318{ 2107{
1319 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2108 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1320 2109
1321 memset (loop, 0, sizeof (struct ev_loop)); 2110 memset (EV_A, 0, sizeof (struct ev_loop));
1322
1323 loop_init (EV_A_ flags); 2111 loop_init (EV_A_ flags);
1324 2112
1325 if (ev_backend (EV_A)) 2113 if (ev_backend (EV_A))
1326 return loop; 2114 return EV_A;
1327 2115
2116 ev_free (EV_A);
1328 return 0; 2117 return 0;
1329} 2118}
1330 2119
1331void 2120#endif /* multiplicity */
1332ev_loop_destroy (EV_P)
1333{
1334 loop_destroy (EV_A);
1335 ev_free (loop);
1336}
1337 2121
1338void 2122#if EV_VERIFY
1339ev_loop_fork (EV_P) 2123static void noinline ecb_cold
2124verify_watcher (EV_P_ W w)
1340{ 2125{
1341 postfork = 1; /* must be in line with ev_default_fork */ 2126 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1342}
1343 2127
2128 if (w->pending)
2129 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2130}
2131
2132static void noinline ecb_cold
2133verify_heap (EV_P_ ANHE *heap, int N)
2134{
2135 int i;
2136
2137 for (i = HEAP0; i < N + HEAP0; ++i)
2138 {
2139 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
2140 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
2141 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
2142
2143 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2144 }
2145}
2146
2147static void noinline ecb_cold
2148array_verify (EV_P_ W *ws, int cnt)
2149{
2150 while (cnt--)
2151 {
2152 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
2153 verify_watcher (EV_A_ ws [cnt]);
2154 }
2155}
2156#endif
2157
2158#if EV_FEATURE_API
2159void ecb_cold
2160ev_verify (EV_P)
2161{
2162#if EV_VERIFY
2163 int i;
2164 WL w;
2165
2166 assert (activecnt >= -1);
2167
2168 assert (fdchangemax >= fdchangecnt);
2169 for (i = 0; i < fdchangecnt; ++i)
2170 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2171
2172 assert (anfdmax >= 0);
2173 for (i = 0; i < anfdmax; ++i)
2174 for (w = anfds [i].head; w; w = w->next)
2175 {
2176 verify_watcher (EV_A_ (W)w);
2177 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2178 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2179 }
2180
2181 assert (timermax >= timercnt);
2182 verify_heap (EV_A_ timers, timercnt);
2183
2184#if EV_PERIODIC_ENABLE
2185 assert (periodicmax >= periodiccnt);
2186 verify_heap (EV_A_ periodics, periodiccnt);
2187#endif
2188
2189 for (i = NUMPRI; i--; )
2190 {
2191 assert (pendingmax [i] >= pendingcnt [i]);
2192#if EV_IDLE_ENABLE
2193 assert (idleall >= 0);
2194 assert (idlemax [i] >= idlecnt [i]);
2195 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
2196#endif
2197 }
2198
2199#if EV_FORK_ENABLE
2200 assert (forkmax >= forkcnt);
2201 array_verify (EV_A_ (W *)forks, forkcnt);
2202#endif
2203
2204#if EV_CLEANUP_ENABLE
2205 assert (cleanupmax >= cleanupcnt);
2206 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2207#endif
2208
2209#if EV_ASYNC_ENABLE
2210 assert (asyncmax >= asynccnt);
2211 array_verify (EV_A_ (W *)asyncs, asynccnt);
2212#endif
2213
2214#if EV_PREPARE_ENABLE
2215 assert (preparemax >= preparecnt);
2216 array_verify (EV_A_ (W *)prepares, preparecnt);
2217#endif
2218
2219#if EV_CHECK_ENABLE
2220 assert (checkmax >= checkcnt);
2221 array_verify (EV_A_ (W *)checks, checkcnt);
2222#endif
2223
2224# if 0
2225#if EV_CHILD_ENABLE
2226 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
2227 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2228#endif
2229# endif
2230#endif
2231}
1344#endif 2232#endif
1345 2233
1346#if EV_MULTIPLICITY 2234#if EV_MULTIPLICITY
1347struct ev_loop * 2235struct ev_loop * ecb_cold
1348ev_default_loop_init (unsigned int flags)
1349#else 2236#else
1350int 2237int
2238#endif
1351ev_default_loop (unsigned int flags) 2239ev_default_loop (unsigned int flags)
1352#endif
1353{ 2240{
1354 if (!ev_default_loop_ptr) 2241 if (!ev_default_loop_ptr)
1355 { 2242 {
1356#if EV_MULTIPLICITY 2243#if EV_MULTIPLICITY
1357 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2244 EV_P = ev_default_loop_ptr = &default_loop_struct;
1358#else 2245#else
1359 ev_default_loop_ptr = 1; 2246 ev_default_loop_ptr = 1;
1360#endif 2247#endif
1361 2248
1362 loop_init (EV_A_ flags); 2249 loop_init (EV_A_ flags);
1363 2250
1364 if (ev_backend (EV_A)) 2251 if (ev_backend (EV_A))
1365 { 2252 {
1366#ifndef _WIN32 2253#if EV_CHILD_ENABLE
1367 ev_signal_init (&childev, childcb, SIGCHLD); 2254 ev_signal_init (&childev, childcb, SIGCHLD);
1368 ev_set_priority (&childev, EV_MAXPRI); 2255 ev_set_priority (&childev, EV_MAXPRI);
1369 ev_signal_start (EV_A_ &childev); 2256 ev_signal_start (EV_A_ &childev);
1370 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2257 ev_unref (EV_A); /* child watcher should not keep loop alive */
1371#endif 2258#endif
… …
1376 2263
1377 return ev_default_loop_ptr; 2264 return ev_default_loop_ptr;
1378} 2265}
1379 2266
1380void 2267void
1381ev_default_destroy (void) 2268ev_loop_fork (EV_P)
1382{ 2269{
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 */ 2270 postfork = 1; /* must be in line with ev_default_fork */
1404} 2271}
1405 2272
1406/*****************************************************************************/ 2273/*****************************************************************************/
1407 2274
1408void 2275void
1409ev_invoke (EV_P_ void *w, int revents) 2276ev_invoke (EV_P_ void *w, int revents)
1410{ 2277{
1411 EV_CB_INVOKE ((W)w, revents); 2278 EV_CB_INVOKE ((W)w, revents);
1412} 2279}
1413 2280
1414void inline_speed 2281unsigned int
1415call_pending (EV_P) 2282ev_pending_count (EV_P)
2283{
2284 int pri;
2285 unsigned int count = 0;
2286
2287 for (pri = NUMPRI; pri--; )
2288 count += pendingcnt [pri];
2289
2290 return count;
2291}
2292
2293void noinline
2294ev_invoke_pending (EV_P)
1416{ 2295{
1417 int pri; 2296 int pri;
1418 2297
1419 for (pri = NUMPRI; pri--; ) 2298 for (pri = NUMPRI; pri--; )
1420 while (pendingcnt [pri]) 2299 while (pendingcnt [pri])
1421 { 2300 {
1422 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2301 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1423 2302
1424 if (expect_true (p->w))
1425 {
1426 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1427
1428 p->w->pending = 0; 2303 p->w->pending = 0;
1429 EV_CB_INVOKE (p->w, p->events); 2304 EV_CB_INVOKE (p->w, p->events);
1430 } 2305 EV_FREQUENT_CHECK;
1431 } 2306 }
1432} 2307}
1433 2308
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 2309#if EV_IDLE_ENABLE
1515void inline_size 2310/* make idle watchers pending. this handles the "call-idle */
2311/* only when higher priorities are idle" logic */
2312inline_size void
1516idle_reify (EV_P) 2313idle_reify (EV_P)
1517{ 2314{
1518 if (expect_false (idleall)) 2315 if (expect_false (idleall))
1519 { 2316 {
1520 int pri; 2317 int pri;
… …
1532 } 2329 }
1533 } 2330 }
1534} 2331}
1535#endif 2332#endif
1536 2333
1537void inline_speed 2334/* make timers pending */
2335inline_size void
2336timers_reify (EV_P)
2337{
2338 EV_FREQUENT_CHECK;
2339
2340 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
2341 {
2342 do
2343 {
2344 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2345
2346 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2347
2348 /* first reschedule or stop timer */
2349 if (w->repeat)
2350 {
2351 ev_at (w) += w->repeat;
2352 if (ev_at (w) < mn_now)
2353 ev_at (w) = mn_now;
2354
2355 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
2356
2357 ANHE_at_cache (timers [HEAP0]);
2358 downheap (timers, timercnt, HEAP0);
2359 }
2360 else
2361 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2362
2363 EV_FREQUENT_CHECK;
2364 feed_reverse (EV_A_ (W)w);
2365 }
2366 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2367
2368 feed_reverse_done (EV_A_ EV_TIMER);
2369 }
2370}
2371
2372#if EV_PERIODIC_ENABLE
2373
2374static void noinline
2375periodic_recalc (EV_P_ ev_periodic *w)
2376{
2377 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2378 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2379
2380 /* the above almost always errs on the low side */
2381 while (at <= ev_rt_now)
2382 {
2383 ev_tstamp nat = at + w->interval;
2384
2385 /* when resolution fails us, we use ev_rt_now */
2386 if (expect_false (nat == at))
2387 {
2388 at = ev_rt_now;
2389 break;
2390 }
2391
2392 at = nat;
2393 }
2394
2395 ev_at (w) = at;
2396}
2397
2398/* make periodics pending */
2399inline_size void
2400periodics_reify (EV_P)
2401{
2402 EV_FREQUENT_CHECK;
2403
2404 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2405 {
2406 int feed_count = 0;
2407
2408 do
2409 {
2410 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2411
2412 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2413
2414 /* first reschedule or stop timer */
2415 if (w->reschedule_cb)
2416 {
2417 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2418
2419 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
2420
2421 ANHE_at_cache (periodics [HEAP0]);
2422 downheap (periodics, periodiccnt, HEAP0);
2423 }
2424 else if (w->interval)
2425 {
2426 periodic_recalc (EV_A_ w);
2427 ANHE_at_cache (periodics [HEAP0]);
2428 downheap (periodics, periodiccnt, HEAP0);
2429 }
2430 else
2431 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2432
2433 EV_FREQUENT_CHECK;
2434 feed_reverse (EV_A_ (W)w);
2435 }
2436 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
2437
2438 feed_reverse_done (EV_A_ EV_PERIODIC);
2439 }
2440}
2441
2442/* simply recalculate all periodics */
2443/* TODO: maybe ensure that at least one event happens when jumping forward? */
2444static void noinline ecb_cold
2445periodics_reschedule (EV_P)
2446{
2447 int i;
2448
2449 /* adjust periodics after time jump */
2450 for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
2451 {
2452 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2453
2454 if (w->reschedule_cb)
2455 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2456 else if (w->interval)
2457 periodic_recalc (EV_A_ w);
2458
2459 ANHE_at_cache (periodics [i]);
2460 }
2461
2462 reheap (periodics, periodiccnt);
2463}
2464#endif
2465
2466/* adjust all timers by a given offset */
2467static void noinline ecb_cold
2468timers_reschedule (EV_P_ ev_tstamp adjust)
2469{
2470 int i;
2471
2472 for (i = 0; i < timercnt; ++i)
2473 {
2474 ANHE *he = timers + i + HEAP0;
2475 ANHE_w (*he)->at += adjust;
2476 ANHE_at_cache (*he);
2477 }
2478}
2479
2480/* fetch new monotonic and realtime times from the kernel */
2481/* also detect if there was a timejump, and act accordingly */
2482inline_speed void
1538time_update (EV_P_ ev_tstamp max_block) 2483time_update (EV_P_ ev_tstamp max_block)
1539{ 2484{
1540 int i;
1541
1542#if EV_USE_MONOTONIC 2485#if EV_USE_MONOTONIC
1543 if (expect_true (have_monotonic)) 2486 if (expect_true (have_monotonic))
1544 { 2487 {
2488 int i;
1545 ev_tstamp odiff = rtmn_diff; 2489 ev_tstamp odiff = rtmn_diff;
1546 2490
1547 mn_now = get_clock (); 2491 mn_now = get_clock ();
1548 2492
1549 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2493 /* 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 2509 * doesn't hurt either as we only do this on time-jumps or
1566 * in the unlikely event of having been preempted here. 2510 * in the unlikely event of having been preempted here.
1567 */ 2511 */
1568 for (i = 4; --i; ) 2512 for (i = 4; --i; )
1569 { 2513 {
2514 ev_tstamp diff;
1570 rtmn_diff = ev_rt_now - mn_now; 2515 rtmn_diff = ev_rt_now - mn_now;
1571 2516
1572 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 2517 diff = odiff - rtmn_diff;
2518
2519 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1573 return; /* all is well */ 2520 return; /* all is well */
1574 2521
1575 ev_rt_now = ev_time (); 2522 ev_rt_now = ev_time ();
1576 mn_now = get_clock (); 2523 mn_now = get_clock ();
1577 now_floor = mn_now; 2524 now_floor = mn_now;
1578 } 2525 }
1579 2526
2527 /* no timer adjustment, as the monotonic clock doesn't jump */
2528 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1580# if EV_PERIODIC_ENABLE 2529# if EV_PERIODIC_ENABLE
1581 periodics_reschedule (EV_A); 2530 periodics_reschedule (EV_A);
1582# endif 2531# endif
1583 /* no timer adjustment, as the monotonic clock doesn't jump */
1584 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1585 } 2532 }
1586 else 2533 else
1587#endif 2534#endif
1588 { 2535 {
1589 ev_rt_now = ev_time (); 2536 ev_rt_now = ev_time ();
1590 2537
1591 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2538 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1592 { 2539 {
2540 /* adjust timers. this is easy, as the offset is the same for all of them */
2541 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1593#if EV_PERIODIC_ENABLE 2542#if EV_PERIODIC_ENABLE
1594 periodics_reschedule (EV_A); 2543 periodics_reschedule (EV_A);
1595#endif 2544#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 } 2545 }
1600 2546
1601 mn_now = ev_rt_now; 2547 mn_now = ev_rt_now;
1602 } 2548 }
1603} 2549}
1604 2550
1605void 2551void
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) 2552ev_run (EV_P_ int flags)
1621{ 2553{
2554#if EV_FEATURE_API
2555 ++loop_depth;
2556#endif
2557
2558 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2559
1622 loop_done = EVUNLOOP_CANCEL; 2560 loop_done = EVBREAK_CANCEL;
1623 2561
1624 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2562 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1625 2563
1626 do 2564 do
1627 { 2565 {
2566#if EV_VERIFY >= 2
2567 ev_verify (EV_A);
2568#endif
2569
1628#ifndef _WIN32 2570#ifndef _WIN32
1629 if (expect_false (curpid)) /* penalise the forking check even more */ 2571 if (expect_false (curpid)) /* penalise the forking check even more */
1630 if (expect_false (getpid () != curpid)) 2572 if (expect_false (getpid () != curpid))
1631 { 2573 {
1632 curpid = getpid (); 2574 curpid = getpid ();
… …
1638 /* we might have forked, so queue fork handlers */ 2580 /* we might have forked, so queue fork handlers */
1639 if (expect_false (postfork)) 2581 if (expect_false (postfork))
1640 if (forkcnt) 2582 if (forkcnt)
1641 { 2583 {
1642 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2584 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1643 call_pending (EV_A); 2585 EV_INVOKE_PENDING;
1644 } 2586 }
1645#endif 2587#endif
1646 2588
2589#if EV_PREPARE_ENABLE
1647 /* queue prepare watchers (and execute them) */ 2590 /* queue prepare watchers (and execute them) */
1648 if (expect_false (preparecnt)) 2591 if (expect_false (preparecnt))
1649 { 2592 {
1650 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2593 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1651 call_pending (EV_A); 2594 EV_INVOKE_PENDING;
1652 } 2595 }
2596#endif
1653 2597
1654 if (expect_false (!activecnt)) 2598 if (expect_false (loop_done))
1655 break; 2599 break;
1656 2600
1657 /* we might have forked, so reify kernel state if necessary */ 2601 /* we might have forked, so reify kernel state if necessary */
1658 if (expect_false (postfork)) 2602 if (expect_false (postfork))
1659 loop_fork (EV_A); 2603 loop_fork (EV_A);
… …
1664 /* calculate blocking time */ 2608 /* calculate blocking time */
1665 { 2609 {
1666 ev_tstamp waittime = 0.; 2610 ev_tstamp waittime = 0.;
1667 ev_tstamp sleeptime = 0.; 2611 ev_tstamp sleeptime = 0.;
1668 2612
2613 /* remember old timestamp for io_blocktime calculation */
2614 ev_tstamp prev_mn_now = mn_now;
2615
2616 /* update time to cancel out callback processing overhead */
2617 time_update (EV_A_ 1e100);
2618
2619 /* from now on, we want a pipe-wake-up */
2620 pipe_write_wanted = 1;
2621
2622 ECB_MEMORY_FENCE; /* amke sure pipe_write_wanted is visible before we check for potential skips */
2623
1669 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2624 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
1670 { 2625 {
1671 /* update time to cancel out callback processing overhead */
1672 time_update (EV_A_ 1e100);
1673
1674 waittime = MAX_BLOCKTIME; 2626 waittime = MAX_BLOCKTIME;
1675 2627
1676 if (timercnt) 2628 if (timercnt)
1677 { 2629 {
1678 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; 2630 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
1679 if (waittime > to) waittime = to; 2631 if (waittime > to) waittime = to;
1680 } 2632 }
1681 2633
1682#if EV_PERIODIC_ENABLE 2634#if EV_PERIODIC_ENABLE
1683 if (periodiccnt) 2635 if (periodiccnt)
1684 { 2636 {
1685 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; 2637 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
1686 if (waittime > to) waittime = to; 2638 if (waittime > to) waittime = to;
1687 } 2639 }
1688#endif 2640#endif
1689 2641
2642 /* don't let timeouts decrease the waittime below timeout_blocktime */
1690 if (expect_false (waittime < timeout_blocktime)) 2643 if (expect_false (waittime < timeout_blocktime))
1691 waittime = timeout_blocktime; 2644 waittime = timeout_blocktime;
1692 2645
1693 sleeptime = waittime - backend_fudge; 2646 /* at this point, we NEED to wait, so we have to ensure */
2647 /* to pass a minimum nonzero value to the backend */
2648 if (expect_false (waittime < backend_mintime))
2649 waittime = backend_mintime;
1694 2650
2651 /* extra check because io_blocktime is commonly 0 */
1695 if (expect_true (sleeptime > io_blocktime)) 2652 if (expect_false (io_blocktime))
1696 sleeptime = io_blocktime;
1697
1698 if (sleeptime)
1699 { 2653 {
2654 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2655
2656 if (sleeptime > waittime - backend_mintime)
2657 sleeptime = waittime - backend_mintime;
2658
2659 if (expect_true (sleeptime > 0.))
2660 {
1700 ev_sleep (sleeptime); 2661 ev_sleep (sleeptime);
1701 waittime -= sleeptime; 2662 waittime -= sleeptime;
2663 }
1702 } 2664 }
1703 } 2665 }
1704 2666
2667#if EV_FEATURE_API
1705 ++loop_count; 2668 ++loop_count;
2669#endif
2670 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
1706 backend_poll (EV_A_ waittime); 2671 backend_poll (EV_A_ waittime);
2672 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2673
2674 pipe_write_wanted = 0; /* just an optimsiation, no fence needed */
2675
2676 if (pipe_write_skipped)
2677 {
2678 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
2679 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2680 }
2681
1707 2682
1708 /* update ev_rt_now, do magic */ 2683 /* update ev_rt_now, do magic */
1709 time_update (EV_A_ waittime + sleeptime); 2684 time_update (EV_A_ waittime + sleeptime);
1710 } 2685 }
1711 2686
… …
1718#if EV_IDLE_ENABLE 2693#if EV_IDLE_ENABLE
1719 /* queue idle watchers unless other events are pending */ 2694 /* queue idle watchers unless other events are pending */
1720 idle_reify (EV_A); 2695 idle_reify (EV_A);
1721#endif 2696#endif
1722 2697
2698#if EV_CHECK_ENABLE
1723 /* queue check watchers, to be executed first */ 2699 /* queue check watchers, to be executed first */
1724 if (expect_false (checkcnt)) 2700 if (expect_false (checkcnt))
1725 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2701 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2702#endif
1726 2703
1727 call_pending (EV_A); 2704 EV_INVOKE_PENDING;
1728 } 2705 }
1729 while (expect_true ( 2706 while (expect_true (
1730 activecnt 2707 activecnt
1731 && !loop_done 2708 && !loop_done
1732 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2709 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
1733 )); 2710 ));
1734 2711
1735 if (loop_done == EVUNLOOP_ONE) 2712 if (loop_done == EVBREAK_ONE)
1736 loop_done = EVUNLOOP_CANCEL; 2713 loop_done = EVBREAK_CANCEL;
2714
2715#if EV_FEATURE_API
2716 --loop_depth;
2717#endif
1737} 2718}
1738 2719
1739void 2720void
1740ev_unloop (EV_P_ int how) 2721ev_break (EV_P_ int how)
1741{ 2722{
1742 loop_done = how; 2723 loop_done = how;
1743} 2724}
1744 2725
2726void
2727ev_ref (EV_P)
2728{
2729 ++activecnt;
2730}
2731
2732void
2733ev_unref (EV_P)
2734{
2735 --activecnt;
2736}
2737
2738void
2739ev_now_update (EV_P)
2740{
2741 time_update (EV_A_ 1e100);
2742}
2743
2744void
2745ev_suspend (EV_P)
2746{
2747 ev_now_update (EV_A);
2748}
2749
2750void
2751ev_resume (EV_P)
2752{
2753 ev_tstamp mn_prev = mn_now;
2754
2755 ev_now_update (EV_A);
2756 timers_reschedule (EV_A_ mn_now - mn_prev);
2757#if EV_PERIODIC_ENABLE
2758 /* TODO: really do this? */
2759 periodics_reschedule (EV_A);
2760#endif
2761}
2762
1745/*****************************************************************************/ 2763/*****************************************************************************/
2764/* singly-linked list management, used when the expected list length is short */
1746 2765
1747void inline_size 2766inline_size void
1748wlist_add (WL *head, WL elem) 2767wlist_add (WL *head, WL elem)
1749{ 2768{
1750 elem->next = *head; 2769 elem->next = *head;
1751 *head = elem; 2770 *head = elem;
1752} 2771}
1753 2772
1754void inline_size 2773inline_size void
1755wlist_del (WL *head, WL elem) 2774wlist_del (WL *head, WL elem)
1756{ 2775{
1757 while (*head) 2776 while (*head)
1758 { 2777 {
1759 if (*head == elem) 2778 if (expect_true (*head == elem))
1760 { 2779 {
1761 *head = elem->next; 2780 *head = elem->next;
1762 return; 2781 break;
1763 } 2782 }
1764 2783
1765 head = &(*head)->next; 2784 head = &(*head)->next;
1766 } 2785 }
1767} 2786}
1768 2787
1769void inline_speed 2788/* internal, faster, version of ev_clear_pending */
2789inline_speed void
1770clear_pending (EV_P_ W w) 2790clear_pending (EV_P_ W w)
1771{ 2791{
1772 if (w->pending) 2792 if (w->pending)
1773 { 2793 {
1774 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2794 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1775 w->pending = 0; 2795 w->pending = 0;
1776 } 2796 }
1777} 2797}
1778 2798
1779int 2799int
… …
1783 int pending = w_->pending; 2803 int pending = w_->pending;
1784 2804
1785 if (expect_true (pending)) 2805 if (expect_true (pending))
1786 { 2806 {
1787 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2807 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2808 p->w = (W)&pending_w;
1788 w_->pending = 0; 2809 w_->pending = 0;
1789 p->w = 0;
1790 return p->events; 2810 return p->events;
1791 } 2811 }
1792 else 2812 else
1793 return 0; 2813 return 0;
1794} 2814}
1795 2815
1796void inline_size 2816inline_size void
1797pri_adjust (EV_P_ W w) 2817pri_adjust (EV_P_ W w)
1798{ 2818{
1799 int pri = w->priority; 2819 int pri = ev_priority (w);
1800 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2820 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1801 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2821 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1802 w->priority = pri; 2822 ev_set_priority (w, pri);
1803} 2823}
1804 2824
1805void inline_speed 2825inline_speed void
1806ev_start (EV_P_ W w, int active) 2826ev_start (EV_P_ W w, int active)
1807{ 2827{
1808 pri_adjust (EV_A_ w); 2828 pri_adjust (EV_A_ w);
1809 w->active = active; 2829 w->active = active;
1810 ev_ref (EV_A); 2830 ev_ref (EV_A);
1811} 2831}
1812 2832
1813void inline_size 2833inline_size void
1814ev_stop (EV_P_ W w) 2834ev_stop (EV_P_ W w)
1815{ 2835{
1816 ev_unref (EV_A); 2836 ev_unref (EV_A);
1817 w->active = 0; 2837 w->active = 0;
1818} 2838}
… …
1825 int fd = w->fd; 2845 int fd = w->fd;
1826 2846
1827 if (expect_false (ev_is_active (w))) 2847 if (expect_false (ev_is_active (w)))
1828 return; 2848 return;
1829 2849
1830 assert (("ev_io_start called with negative fd", fd >= 0)); 2850 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2851 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2852
2853 EV_FREQUENT_CHECK;
1831 2854
1832 ev_start (EV_A_ (W)w, 1); 2855 ev_start (EV_A_ (W)w, 1);
1833 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2856 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1834 wlist_add (&anfds[fd].head, (WL)w); 2857 wlist_add (&anfds[fd].head, (WL)w);
1835 2858
1836 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2859 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
1837 w->events &= ~EV_IOFDSET; 2860 w->events &= ~EV__IOFDSET;
2861
2862 EV_FREQUENT_CHECK;
1838} 2863}
1839 2864
1840void noinline 2865void noinline
1841ev_io_stop (EV_P_ ev_io *w) 2866ev_io_stop (EV_P_ ev_io *w)
1842{ 2867{
1843 clear_pending (EV_A_ (W)w); 2868 clear_pending (EV_A_ (W)w);
1844 if (expect_false (!ev_is_active (w))) 2869 if (expect_false (!ev_is_active (w)))
1845 return; 2870 return;
1846 2871
1847 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2872 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2873
2874 EV_FREQUENT_CHECK;
1848 2875
1849 wlist_del (&anfds[w->fd].head, (WL)w); 2876 wlist_del (&anfds[w->fd].head, (WL)w);
1850 ev_stop (EV_A_ (W)w); 2877 ev_stop (EV_A_ (W)w);
1851 2878
1852 fd_change (EV_A_ w->fd, 1); 2879 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2880
2881 EV_FREQUENT_CHECK;
1853} 2882}
1854 2883
1855void noinline 2884void noinline
1856ev_timer_start (EV_P_ ev_timer *w) 2885ev_timer_start (EV_P_ ev_timer *w)
1857{ 2886{
1858 if (expect_false (ev_is_active (w))) 2887 if (expect_false (ev_is_active (w)))
1859 return; 2888 return;
1860 2889
1861 ((WT)w)->at += mn_now; 2890 ev_at (w) += mn_now;
1862 2891
1863 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2892 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1864 2893
2894 EV_FREQUENT_CHECK;
2895
2896 ++timercnt;
1865 ev_start (EV_A_ (W)w, ++timercnt); 2897 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1866 array_needsize (WT, timers, timermax, timercnt, EMPTY2); 2898 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1867 timers [timercnt - 1] = (WT)w; 2899 ANHE_w (timers [ev_active (w)]) = (WT)w;
1868 upheap (timers, timercnt - 1); 2900 ANHE_at_cache (timers [ev_active (w)]);
2901 upheap (timers, ev_active (w));
1869 2902
2903 EV_FREQUENT_CHECK;
2904
1870 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/ 2905 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1871} 2906}
1872 2907
1873void noinline 2908void noinline
1874ev_timer_stop (EV_P_ ev_timer *w) 2909ev_timer_stop (EV_P_ ev_timer *w)
1875{ 2910{
1876 clear_pending (EV_A_ (W)w); 2911 clear_pending (EV_A_ (W)w);
1877 if (expect_false (!ev_is_active (w))) 2912 if (expect_false (!ev_is_active (w)))
1878 return; 2913 return;
1879 2914
1880 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w)); 2915 EV_FREQUENT_CHECK;
1881 2916
1882 { 2917 {
1883 int active = ((W)w)->active; 2918 int active = ev_active (w);
1884 2919
2920 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2921
2922 --timercnt;
2923
1885 if (expect_true (--active < --timercnt)) 2924 if (expect_true (active < timercnt + HEAP0))
1886 { 2925 {
1887 timers [active] = timers [timercnt]; 2926 timers [active] = timers [timercnt + HEAP0];
1888 adjustheap (timers, timercnt, active); 2927 adjustheap (timers, timercnt, active);
1889 } 2928 }
1890 } 2929 }
1891 2930
1892 ((WT)w)->at -= mn_now; 2931 ev_at (w) -= mn_now;
1893 2932
1894 ev_stop (EV_A_ (W)w); 2933 ev_stop (EV_A_ (W)w);
2934
2935 EV_FREQUENT_CHECK;
1895} 2936}
1896 2937
1897void noinline 2938void noinline
1898ev_timer_again (EV_P_ ev_timer *w) 2939ev_timer_again (EV_P_ ev_timer *w)
1899{ 2940{
2941 EV_FREQUENT_CHECK;
2942
1900 if (ev_is_active (w)) 2943 if (ev_is_active (w))
1901 { 2944 {
1902 if (w->repeat) 2945 if (w->repeat)
1903 { 2946 {
1904 ((WT)w)->at = mn_now + w->repeat; 2947 ev_at (w) = mn_now + w->repeat;
2948 ANHE_at_cache (timers [ev_active (w)]);
1905 adjustheap (timers, timercnt, ((W)w)->active - 1); 2949 adjustheap (timers, timercnt, ev_active (w));
1906 } 2950 }
1907 else 2951 else
1908 ev_timer_stop (EV_A_ w); 2952 ev_timer_stop (EV_A_ w);
1909 } 2953 }
1910 else if (w->repeat) 2954 else if (w->repeat)
1911 { 2955 {
1912 w->at = w->repeat; 2956 ev_at (w) = w->repeat;
1913 ev_timer_start (EV_A_ w); 2957 ev_timer_start (EV_A_ w);
1914 } 2958 }
2959
2960 EV_FREQUENT_CHECK;
2961}
2962
2963ev_tstamp
2964ev_timer_remaining (EV_P_ ev_timer *w)
2965{
2966 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
1915} 2967}
1916 2968
1917#if EV_PERIODIC_ENABLE 2969#if EV_PERIODIC_ENABLE
1918void noinline 2970void noinline
1919ev_periodic_start (EV_P_ ev_periodic *w) 2971ev_periodic_start (EV_P_ ev_periodic *w)
1920{ 2972{
1921 if (expect_false (ev_is_active (w))) 2973 if (expect_false (ev_is_active (w)))
1922 return; 2974 return;
1923 2975
1924 if (w->reschedule_cb) 2976 if (w->reschedule_cb)
1925 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 2977 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1926 else if (w->interval) 2978 else if (w->interval)
1927 { 2979 {
1928 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2980 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 */ 2981 periodic_recalc (EV_A_ w);
1930 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1931 } 2982 }
1932 else 2983 else
1933 ((WT)w)->at = w->offset; 2984 ev_at (w) = w->offset;
1934 2985
2986 EV_FREQUENT_CHECK;
2987
2988 ++periodiccnt;
1935 ev_start (EV_A_ (W)w, ++periodiccnt); 2989 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1936 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2); 2990 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1937 periodics [periodiccnt - 1] = (WT)w; 2991 ANHE_w (periodics [ev_active (w)]) = (WT)w;
1938 upheap (periodics, periodiccnt - 1); 2992 ANHE_at_cache (periodics [ev_active (w)]);
2993 upheap (periodics, ev_active (w));
1939 2994
2995 EV_FREQUENT_CHECK;
2996
1940 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/ 2997 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1941} 2998}
1942 2999
1943void noinline 3000void noinline
1944ev_periodic_stop (EV_P_ ev_periodic *w) 3001ev_periodic_stop (EV_P_ ev_periodic *w)
1945{ 3002{
1946 clear_pending (EV_A_ (W)w); 3003 clear_pending (EV_A_ (W)w);
1947 if (expect_false (!ev_is_active (w))) 3004 if (expect_false (!ev_is_active (w)))
1948 return; 3005 return;
1949 3006
1950 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w)); 3007 EV_FREQUENT_CHECK;
1951 3008
1952 { 3009 {
1953 int active = ((W)w)->active; 3010 int active = ev_active (w);
1954 3011
3012 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
3013
3014 --periodiccnt;
3015
1955 if (expect_true (--active < --periodiccnt)) 3016 if (expect_true (active < periodiccnt + HEAP0))
1956 { 3017 {
1957 periodics [active] = periodics [periodiccnt]; 3018 periodics [active] = periodics [periodiccnt + HEAP0];
1958 adjustheap (periodics, periodiccnt, active); 3019 adjustheap (periodics, periodiccnt, active);
1959 } 3020 }
1960 } 3021 }
1961 3022
1962 ev_stop (EV_A_ (W)w); 3023 ev_stop (EV_A_ (W)w);
3024
3025 EV_FREQUENT_CHECK;
1963} 3026}
1964 3027
1965void noinline 3028void noinline
1966ev_periodic_again (EV_P_ ev_periodic *w) 3029ev_periodic_again (EV_P_ ev_periodic *w)
1967{ 3030{
… …
1973 3036
1974#ifndef SA_RESTART 3037#ifndef SA_RESTART
1975# define SA_RESTART 0 3038# define SA_RESTART 0
1976#endif 3039#endif
1977 3040
3041#if EV_SIGNAL_ENABLE
3042
1978void noinline 3043void noinline
1979ev_signal_start (EV_P_ ev_signal *w) 3044ev_signal_start (EV_P_ ev_signal *w)
1980{ 3045{
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))) 3046 if (expect_false (ev_is_active (w)))
1985 return; 3047 return;
1986 3048
1987 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 3049 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
1988 3050
1989 evpipe_init (EV_A); 3051#if EV_MULTIPLICITY
3052 assert (("libev: a signal must not be attached to two different loops",
3053 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
1990 3054
3055 signals [w->signum - 1].loop = EV_A;
3056#endif
3057
3058 EV_FREQUENT_CHECK;
3059
3060#if EV_USE_SIGNALFD
3061 if (sigfd == -2)
1991 { 3062 {
1992#ifndef _WIN32 3063 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
1993 sigset_t full, prev; 3064 if (sigfd < 0 && errno == EINVAL)
1994 sigfillset (&full); 3065 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
1995 sigprocmask (SIG_SETMASK, &full, &prev);
1996#endif
1997 3066
1998 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 3067 if (sigfd >= 0)
3068 {
3069 fd_intern (sigfd); /* doing it twice will not hurt */
1999 3070
2000#ifndef _WIN32 3071 sigemptyset (&sigfd_set);
2001 sigprocmask (SIG_SETMASK, &prev, 0); 3072
2002#endif 3073 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3074 ev_set_priority (&sigfd_w, EV_MAXPRI);
3075 ev_io_start (EV_A_ &sigfd_w);
3076 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3077 }
2003 } 3078 }
3079
3080 if (sigfd >= 0)
3081 {
3082 /* TODO: check .head */
3083 sigaddset (&sigfd_set, w->signum);
3084 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3085
3086 signalfd (sigfd, &sigfd_set, 0);
3087 }
3088#endif
2004 3089
2005 ev_start (EV_A_ (W)w, 1); 3090 ev_start (EV_A_ (W)w, 1);
2006 wlist_add (&signals [w->signum - 1].head, (WL)w); 3091 wlist_add (&signals [w->signum - 1].head, (WL)w);
2007 3092
2008 if (!((WL)w)->next) 3093 if (!((WL)w)->next)
3094# if EV_USE_SIGNALFD
3095 if (sigfd < 0) /*TODO*/
3096# endif
2009 { 3097 {
2010#if _WIN32 3098# ifdef _WIN32
3099 evpipe_init (EV_A);
3100
2011 signal (w->signum, ev_sighandler); 3101 signal (w->signum, ev_sighandler);
2012#else 3102# else
2013 struct sigaction sa; 3103 struct sigaction sa;
3104
3105 evpipe_init (EV_A);
3106
2014 sa.sa_handler = ev_sighandler; 3107 sa.sa_handler = ev_sighandler;
2015 sigfillset (&sa.sa_mask); 3108 sigfillset (&sa.sa_mask);
2016 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3109 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2017 sigaction (w->signum, &sa, 0); 3110 sigaction (w->signum, &sa, 0);
3111
3112 if (origflags & EVFLAG_NOSIGMASK)
3113 {
3114 sigemptyset (&sa.sa_mask);
3115 sigaddset (&sa.sa_mask, w->signum);
3116 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3117 }
2018#endif 3118#endif
2019 } 3119 }
3120
3121 EV_FREQUENT_CHECK;
2020} 3122}
2021 3123
2022void noinline 3124void noinline
2023ev_signal_stop (EV_P_ ev_signal *w) 3125ev_signal_stop (EV_P_ ev_signal *w)
2024{ 3126{
2025 clear_pending (EV_A_ (W)w); 3127 clear_pending (EV_A_ (W)w);
2026 if (expect_false (!ev_is_active (w))) 3128 if (expect_false (!ev_is_active (w)))
2027 return; 3129 return;
2028 3130
3131 EV_FREQUENT_CHECK;
3132
2029 wlist_del (&signals [w->signum - 1].head, (WL)w); 3133 wlist_del (&signals [w->signum - 1].head, (WL)w);
2030 ev_stop (EV_A_ (W)w); 3134 ev_stop (EV_A_ (W)w);
2031 3135
2032 if (!signals [w->signum - 1].head) 3136 if (!signals [w->signum - 1].head)
3137 {
3138#if EV_MULTIPLICITY
3139 signals [w->signum - 1].loop = 0; /* unattach from signal */
3140#endif
3141#if EV_USE_SIGNALFD
3142 if (sigfd >= 0)
3143 {
3144 sigset_t ss;
3145
3146 sigemptyset (&ss);
3147 sigaddset (&ss, w->signum);
3148 sigdelset (&sigfd_set, w->signum);
3149
3150 signalfd (sigfd, &sigfd_set, 0);
3151 sigprocmask (SIG_UNBLOCK, &ss, 0);
3152 }
3153 else
3154#endif
2033 signal (w->signum, SIG_DFL); 3155 signal (w->signum, SIG_DFL);
3156 }
3157
3158 EV_FREQUENT_CHECK;
2034} 3159}
3160
3161#endif
3162
3163#if EV_CHILD_ENABLE
2035 3164
2036void 3165void
2037ev_child_start (EV_P_ ev_child *w) 3166ev_child_start (EV_P_ ev_child *w)
2038{ 3167{
2039#if EV_MULTIPLICITY 3168#if EV_MULTIPLICITY
2040 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3169 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2041#endif 3170#endif
2042 if (expect_false (ev_is_active (w))) 3171 if (expect_false (ev_is_active (w)))
2043 return; 3172 return;
2044 3173
3174 EV_FREQUENT_CHECK;
3175
2045 ev_start (EV_A_ (W)w, 1); 3176 ev_start (EV_A_ (W)w, 1);
2046 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3177 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
3178
3179 EV_FREQUENT_CHECK;
2047} 3180}
2048 3181
2049void 3182void
2050ev_child_stop (EV_P_ ev_child *w) 3183ev_child_stop (EV_P_ ev_child *w)
2051{ 3184{
2052 clear_pending (EV_A_ (W)w); 3185 clear_pending (EV_A_ (W)w);
2053 if (expect_false (!ev_is_active (w))) 3186 if (expect_false (!ev_is_active (w)))
2054 return; 3187 return;
2055 3188
3189 EV_FREQUENT_CHECK;
3190
2056 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3191 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2057 ev_stop (EV_A_ (W)w); 3192 ev_stop (EV_A_ (W)w);
3193
3194 EV_FREQUENT_CHECK;
2058} 3195}
3196
3197#endif
2059 3198
2060#if EV_STAT_ENABLE 3199#if EV_STAT_ENABLE
2061 3200
2062# ifdef _WIN32 3201# ifdef _WIN32
2063# undef lstat 3202# undef lstat
2064# define lstat(a,b) _stati64 (a,b) 3203# define lstat(a,b) _stati64 (a,b)
2065# endif 3204# endif
2066 3205
2067#define DEF_STAT_INTERVAL 5.0074891 3206#define DEF_STAT_INTERVAL 5.0074891
3207#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2068#define MIN_STAT_INTERVAL 0.1074891 3208#define MIN_STAT_INTERVAL 0.1074891
2069 3209
2070static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3210static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2071 3211
2072#if EV_USE_INOTIFY 3212#if EV_USE_INOTIFY
2073# define EV_INOTIFY_BUFSIZE 8192 3213
3214/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3215# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2074 3216
2075static void noinline 3217static void noinline
2076infy_add (EV_P_ ev_stat *w) 3218infy_add (EV_P_ ev_stat *w)
2077{ 3219{
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); 3220 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 3221
2080 if (w->wd < 0) 3222 if (w->wd >= 0)
3223 {
3224 struct statfs sfs;
3225
3226 /* now local changes will be tracked by inotify, but remote changes won't */
3227 /* unless the filesystem is known to be local, we therefore still poll */
3228 /* also do poll on <2.6.25, but with normal frequency */
3229
3230 if (!fs_2625)
3231 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3232 else if (!statfs (w->path, &sfs)
3233 && (sfs.f_type == 0x1373 /* devfs */
3234 || sfs.f_type == 0xEF53 /* ext2/3 */
3235 || sfs.f_type == 0x3153464a /* jfs */
3236 || sfs.f_type == 0x52654973 /* reiser3 */
3237 || sfs.f_type == 0x01021994 /* tempfs */
3238 || sfs.f_type == 0x58465342 /* xfs */))
3239 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3240 else
3241 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2081 { 3242 }
2082 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 3243 else
3244 {
3245 /* can't use inotify, continue to stat */
3246 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2083 3247
2084 /* monitor some parent directory for speedup hints */ 3248 /* if path is not there, monitor some parent directory for speedup hints */
3249 /* note that exceeding the hardcoded path limit is not a correctness issue, */
3250 /* but an efficiency issue only */
2085 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3251 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2086 { 3252 {
2087 char path [4096]; 3253 char path [4096];
2088 strcpy (path, w->path); 3254 strcpy (path, w->path);
2089 3255
… …
2092 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 3258 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2093 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 3259 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2094 3260
2095 char *pend = strrchr (path, '/'); 3261 char *pend = strrchr (path, '/');
2096 3262
2097 if (!pend) 3263 if (!pend || pend == path)
2098 break; /* whoops, no '/', complain to your admin */ 3264 break;
2099 3265
2100 *pend = 0; 3266 *pend = 0;
2101 w->wd = inotify_add_watch (fs_fd, path, mask); 3267 w->wd = inotify_add_watch (fs_fd, path, mask);
2102 } 3268 }
2103 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3269 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2104 } 3270 }
2105 } 3271 }
2106 else
2107 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2108 3272
2109 if (w->wd >= 0) 3273 if (w->wd >= 0)
2110 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3274 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
3275
3276 /* now re-arm timer, if required */
3277 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3278 ev_timer_again (EV_A_ &w->timer);
3279 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2111} 3280}
2112 3281
2113static void noinline 3282static void noinline
2114infy_del (EV_P_ ev_stat *w) 3283infy_del (EV_P_ ev_stat *w)
2115{ 3284{
… …
2118 3287
2119 if (wd < 0) 3288 if (wd < 0)
2120 return; 3289 return;
2121 3290
2122 w->wd = -2; 3291 w->wd = -2;
2123 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3292 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2124 wlist_del (&fs_hash [slot].head, (WL)w); 3293 wlist_del (&fs_hash [slot].head, (WL)w);
2125 3294
2126 /* remove this watcher, if others are watching it, they will rearm */ 3295 /* remove this watcher, if others are watching it, they will rearm */
2127 inotify_rm_watch (fs_fd, wd); 3296 inotify_rm_watch (fs_fd, wd);
2128} 3297}
2129 3298
2130static void noinline 3299static void noinline
2131infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3300infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2132{ 3301{
2133 if (slot < 0) 3302 if (slot < 0)
2134 /* overflow, need to check for all hahs slots */ 3303 /* overflow, need to check for all hash slots */
2135 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3304 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2136 infy_wd (EV_A_ slot, wd, ev); 3305 infy_wd (EV_A_ slot, wd, ev);
2137 else 3306 else
2138 { 3307 {
2139 WL w_; 3308 WL w_;
2140 3309
2141 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3310 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2142 { 3311 {
2143 ev_stat *w = (ev_stat *)w_; 3312 ev_stat *w = (ev_stat *)w_;
2144 w_ = w_->next; /* lets us remove this watcher and all before it */ 3313 w_ = w_->next; /* lets us remove this watcher and all before it */
2145 3314
2146 if (w->wd == wd || wd == -1) 3315 if (w->wd == wd || wd == -1)
2147 { 3316 {
2148 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3317 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2149 { 3318 {
3319 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2150 w->wd = -1; 3320 w->wd = -1;
2151 infy_add (EV_A_ w); /* re-add, no matter what */ 3321 infy_add (EV_A_ w); /* re-add, no matter what */
2152 } 3322 }
2153 3323
2154 stat_timer_cb (EV_A_ &w->timer, 0); 3324 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2159 3329
2160static void 3330static void
2161infy_cb (EV_P_ ev_io *w, int revents) 3331infy_cb (EV_P_ ev_io *w, int revents)
2162{ 3332{
2163 char buf [EV_INOTIFY_BUFSIZE]; 3333 char buf [EV_INOTIFY_BUFSIZE];
2164 struct inotify_event *ev = (struct inotify_event *)buf;
2165 int ofs; 3334 int ofs;
2166 int len = read (fs_fd, buf, sizeof (buf)); 3335 int len = read (fs_fd, buf, sizeof (buf));
2167 3336
2168 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3337 for (ofs = 0; ofs < len; )
3338 {
3339 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2169 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3340 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3341 ofs += sizeof (struct inotify_event) + ev->len;
3342 }
2170} 3343}
2171 3344
2172void inline_size 3345inline_size void ecb_cold
3346ev_check_2625 (EV_P)
3347{
3348 /* kernels < 2.6.25 are borked
3349 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3350 */
3351 if (ev_linux_version () < 0x020619)
3352 return;
3353
3354 fs_2625 = 1;
3355}
3356
3357inline_size int
3358infy_newfd (void)
3359{
3360#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3361 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3362 if (fd >= 0)
3363 return fd;
3364#endif
3365 return inotify_init ();
3366}
3367
3368inline_size void
2173infy_init (EV_P) 3369infy_init (EV_P)
2174{ 3370{
2175 if (fs_fd != -2) 3371 if (fs_fd != -2)
2176 return; 3372 return;
2177 3373
3374 fs_fd = -1;
3375
3376 ev_check_2625 (EV_A);
3377
2178 fs_fd = inotify_init (); 3378 fs_fd = infy_newfd ();
2179 3379
2180 if (fs_fd >= 0) 3380 if (fs_fd >= 0)
2181 { 3381 {
3382 fd_intern (fs_fd);
2182 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3383 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2183 ev_set_priority (&fs_w, EV_MAXPRI); 3384 ev_set_priority (&fs_w, EV_MAXPRI);
2184 ev_io_start (EV_A_ &fs_w); 3385 ev_io_start (EV_A_ &fs_w);
3386 ev_unref (EV_A);
2185 } 3387 }
2186} 3388}
2187 3389
2188void inline_size 3390inline_size void
2189infy_fork (EV_P) 3391infy_fork (EV_P)
2190{ 3392{
2191 int slot; 3393 int slot;
2192 3394
2193 if (fs_fd < 0) 3395 if (fs_fd < 0)
2194 return; 3396 return;
2195 3397
3398 ev_ref (EV_A);
3399 ev_io_stop (EV_A_ &fs_w);
2196 close (fs_fd); 3400 close (fs_fd);
2197 fs_fd = inotify_init (); 3401 fs_fd = infy_newfd ();
2198 3402
3403 if (fs_fd >= 0)
3404 {
3405 fd_intern (fs_fd);
3406 ev_io_set (&fs_w, fs_fd, EV_READ);
3407 ev_io_start (EV_A_ &fs_w);
3408 ev_unref (EV_A);
3409 }
3410
2199 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3411 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2200 { 3412 {
2201 WL w_ = fs_hash [slot].head; 3413 WL w_ = fs_hash [slot].head;
2202 fs_hash [slot].head = 0; 3414 fs_hash [slot].head = 0;
2203 3415
2204 while (w_) 3416 while (w_)
… …
2209 w->wd = -1; 3421 w->wd = -1;
2210 3422
2211 if (fs_fd >= 0) 3423 if (fs_fd >= 0)
2212 infy_add (EV_A_ w); /* re-add, no matter what */ 3424 infy_add (EV_A_ w); /* re-add, no matter what */
2213 else 3425 else
3426 {
3427 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3428 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2214 ev_timer_start (EV_A_ &w->timer); 3429 ev_timer_again (EV_A_ &w->timer);
3430 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3431 }
2215 } 3432 }
2216
2217 } 3433 }
2218} 3434}
2219 3435
3436#endif
3437
3438#ifdef _WIN32
3439# define EV_LSTAT(p,b) _stati64 (p, b)
3440#else
3441# define EV_LSTAT(p,b) lstat (p, b)
2220#endif 3442#endif
2221 3443
2222void 3444void
2223ev_stat_stat (EV_P_ ev_stat *w) 3445ev_stat_stat (EV_P_ ev_stat *w)
2224{ 3446{
… …
2231static void noinline 3453static void noinline
2232stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3454stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2233{ 3455{
2234 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3456 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2235 3457
2236 /* we copy this here each the time so that */ 3458 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); 3459 ev_stat_stat (EV_A_ w);
2240 3460
2241 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3461 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2242 if ( 3462 if (
2243 w->prev.st_dev != w->attr.st_dev 3463 prev.st_dev != w->attr.st_dev
2244 || w->prev.st_ino != w->attr.st_ino 3464 || prev.st_ino != w->attr.st_ino
2245 || w->prev.st_mode != w->attr.st_mode 3465 || prev.st_mode != w->attr.st_mode
2246 || w->prev.st_nlink != w->attr.st_nlink 3466 || prev.st_nlink != w->attr.st_nlink
2247 || w->prev.st_uid != w->attr.st_uid 3467 || prev.st_uid != w->attr.st_uid
2248 || w->prev.st_gid != w->attr.st_gid 3468 || prev.st_gid != w->attr.st_gid
2249 || w->prev.st_rdev != w->attr.st_rdev 3469 || prev.st_rdev != w->attr.st_rdev
2250 || w->prev.st_size != w->attr.st_size 3470 || prev.st_size != w->attr.st_size
2251 || w->prev.st_atime != w->attr.st_atime 3471 || prev.st_atime != w->attr.st_atime
2252 || w->prev.st_mtime != w->attr.st_mtime 3472 || prev.st_mtime != w->attr.st_mtime
2253 || w->prev.st_ctime != w->attr.st_ctime 3473 || prev.st_ctime != w->attr.st_ctime
2254 ) { 3474 ) {
3475 /* we only update w->prev on actual differences */
3476 /* in case we test more often than invoke the callback, */
3477 /* to ensure that prev is always different to attr */
3478 w->prev = prev;
3479
2255 #if EV_USE_INOTIFY 3480 #if EV_USE_INOTIFY
3481 if (fs_fd >= 0)
3482 {
2256 infy_del (EV_A_ w); 3483 infy_del (EV_A_ w);
2257 infy_add (EV_A_ w); 3484 infy_add (EV_A_ w);
2258 ev_stat_stat (EV_A_ w); /* avoid race... */ 3485 ev_stat_stat (EV_A_ w); /* avoid race... */
3486 }
2259 #endif 3487 #endif
2260 3488
2261 ev_feed_event (EV_A_ w, EV_STAT); 3489 ev_feed_event (EV_A_ w, EV_STAT);
2262 } 3490 }
2263} 3491}
… …
2266ev_stat_start (EV_P_ ev_stat *w) 3494ev_stat_start (EV_P_ ev_stat *w)
2267{ 3495{
2268 if (expect_false (ev_is_active (w))) 3496 if (expect_false (ev_is_active (w)))
2269 return; 3497 return;
2270 3498
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); 3499 ev_stat_stat (EV_A_ w);
2276 3500
3501 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2277 if (w->interval < MIN_STAT_INTERVAL) 3502 w->interval = MIN_STAT_INTERVAL;
2278 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2279 3503
2280 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3504 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)); 3505 ev_set_priority (&w->timer, ev_priority (w));
2282 3506
2283#if EV_USE_INOTIFY 3507#if EV_USE_INOTIFY
2284 infy_init (EV_A); 3508 infy_init (EV_A);
2285 3509
2286 if (fs_fd >= 0) 3510 if (fs_fd >= 0)
2287 infy_add (EV_A_ w); 3511 infy_add (EV_A_ w);
2288 else 3512 else
2289#endif 3513#endif
3514 {
2290 ev_timer_start (EV_A_ &w->timer); 3515 ev_timer_again (EV_A_ &w->timer);
3516 ev_unref (EV_A);
3517 }
2291 3518
2292 ev_start (EV_A_ (W)w, 1); 3519 ev_start (EV_A_ (W)w, 1);
3520
3521 EV_FREQUENT_CHECK;
2293} 3522}
2294 3523
2295void 3524void
2296ev_stat_stop (EV_P_ ev_stat *w) 3525ev_stat_stop (EV_P_ ev_stat *w)
2297{ 3526{
2298 clear_pending (EV_A_ (W)w); 3527 clear_pending (EV_A_ (W)w);
2299 if (expect_false (!ev_is_active (w))) 3528 if (expect_false (!ev_is_active (w)))
2300 return; 3529 return;
2301 3530
3531 EV_FREQUENT_CHECK;
3532
2302#if EV_USE_INOTIFY 3533#if EV_USE_INOTIFY
2303 infy_del (EV_A_ w); 3534 infy_del (EV_A_ w);
2304#endif 3535#endif
3536
3537 if (ev_is_active (&w->timer))
3538 {
3539 ev_ref (EV_A);
2305 ev_timer_stop (EV_A_ &w->timer); 3540 ev_timer_stop (EV_A_ &w->timer);
3541 }
2306 3542
2307 ev_stop (EV_A_ (W)w); 3543 ev_stop (EV_A_ (W)w);
3544
3545 EV_FREQUENT_CHECK;
2308} 3546}
2309#endif 3547#endif
2310 3548
2311#if EV_IDLE_ENABLE 3549#if EV_IDLE_ENABLE
2312void 3550void
… …
2315 if (expect_false (ev_is_active (w))) 3553 if (expect_false (ev_is_active (w)))
2316 return; 3554 return;
2317 3555
2318 pri_adjust (EV_A_ (W)w); 3556 pri_adjust (EV_A_ (W)w);
2319 3557
3558 EV_FREQUENT_CHECK;
3559
2320 { 3560 {
2321 int active = ++idlecnt [ABSPRI (w)]; 3561 int active = ++idlecnt [ABSPRI (w)];
2322 3562
2323 ++idleall; 3563 ++idleall;
2324 ev_start (EV_A_ (W)w, active); 3564 ev_start (EV_A_ (W)w, active);
2325 3565
2326 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 3566 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2327 idles [ABSPRI (w)][active - 1] = w; 3567 idles [ABSPRI (w)][active - 1] = w;
2328 } 3568 }
3569
3570 EV_FREQUENT_CHECK;
2329} 3571}
2330 3572
2331void 3573void
2332ev_idle_stop (EV_P_ ev_idle *w) 3574ev_idle_stop (EV_P_ ev_idle *w)
2333{ 3575{
2334 clear_pending (EV_A_ (W)w); 3576 clear_pending (EV_A_ (W)w);
2335 if (expect_false (!ev_is_active (w))) 3577 if (expect_false (!ev_is_active (w)))
2336 return; 3578 return;
2337 3579
3580 EV_FREQUENT_CHECK;
3581
2338 { 3582 {
2339 int active = ((W)w)->active; 3583 int active = ev_active (w);
2340 3584
2341 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; 3585 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2342 ((W)idles [ABSPRI (w)][active - 1])->active = active; 3586 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2343 3587
2344 ev_stop (EV_A_ (W)w); 3588 ev_stop (EV_A_ (W)w);
2345 --idleall; 3589 --idleall;
2346 } 3590 }
2347}
2348#endif
2349 3591
3592 EV_FREQUENT_CHECK;
3593}
3594#endif
3595
3596#if EV_PREPARE_ENABLE
2350void 3597void
2351ev_prepare_start (EV_P_ ev_prepare *w) 3598ev_prepare_start (EV_P_ ev_prepare *w)
2352{ 3599{
2353 if (expect_false (ev_is_active (w))) 3600 if (expect_false (ev_is_active (w)))
2354 return; 3601 return;
3602
3603 EV_FREQUENT_CHECK;
2355 3604
2356 ev_start (EV_A_ (W)w, ++preparecnt); 3605 ev_start (EV_A_ (W)w, ++preparecnt);
2357 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 3606 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2358 prepares [preparecnt - 1] = w; 3607 prepares [preparecnt - 1] = w;
3608
3609 EV_FREQUENT_CHECK;
2359} 3610}
2360 3611
2361void 3612void
2362ev_prepare_stop (EV_P_ ev_prepare *w) 3613ev_prepare_stop (EV_P_ ev_prepare *w)
2363{ 3614{
2364 clear_pending (EV_A_ (W)w); 3615 clear_pending (EV_A_ (W)w);
2365 if (expect_false (!ev_is_active (w))) 3616 if (expect_false (!ev_is_active (w)))
2366 return; 3617 return;
2367 3618
3619 EV_FREQUENT_CHECK;
3620
2368 { 3621 {
2369 int active = ((W)w)->active; 3622 int active = ev_active (w);
3623
2370 prepares [active - 1] = prepares [--preparecnt]; 3624 prepares [active - 1] = prepares [--preparecnt];
2371 ((W)prepares [active - 1])->active = active; 3625 ev_active (prepares [active - 1]) = active;
2372 } 3626 }
2373 3627
2374 ev_stop (EV_A_ (W)w); 3628 ev_stop (EV_A_ (W)w);
2375}
2376 3629
3630 EV_FREQUENT_CHECK;
3631}
3632#endif
3633
3634#if EV_CHECK_ENABLE
2377void 3635void
2378ev_check_start (EV_P_ ev_check *w) 3636ev_check_start (EV_P_ ev_check *w)
2379{ 3637{
2380 if (expect_false (ev_is_active (w))) 3638 if (expect_false (ev_is_active (w)))
2381 return; 3639 return;
3640
3641 EV_FREQUENT_CHECK;
2382 3642
2383 ev_start (EV_A_ (W)w, ++checkcnt); 3643 ev_start (EV_A_ (W)w, ++checkcnt);
2384 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 3644 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2385 checks [checkcnt - 1] = w; 3645 checks [checkcnt - 1] = w;
3646
3647 EV_FREQUENT_CHECK;
2386} 3648}
2387 3649
2388void 3650void
2389ev_check_stop (EV_P_ ev_check *w) 3651ev_check_stop (EV_P_ ev_check *w)
2390{ 3652{
2391 clear_pending (EV_A_ (W)w); 3653 clear_pending (EV_A_ (W)w);
2392 if (expect_false (!ev_is_active (w))) 3654 if (expect_false (!ev_is_active (w)))
2393 return; 3655 return;
2394 3656
3657 EV_FREQUENT_CHECK;
3658
2395 { 3659 {
2396 int active = ((W)w)->active; 3660 int active = ev_active (w);
3661
2397 checks [active - 1] = checks [--checkcnt]; 3662 checks [active - 1] = checks [--checkcnt];
2398 ((W)checks [active - 1])->active = active; 3663 ev_active (checks [active - 1]) = active;
2399 } 3664 }
2400 3665
2401 ev_stop (EV_A_ (W)w); 3666 ev_stop (EV_A_ (W)w);
3667
3668 EV_FREQUENT_CHECK;
2402} 3669}
3670#endif
2403 3671
2404#if EV_EMBED_ENABLE 3672#if EV_EMBED_ENABLE
2405void noinline 3673void noinline
2406ev_embed_sweep (EV_P_ ev_embed *w) 3674ev_embed_sweep (EV_P_ ev_embed *w)
2407{ 3675{
2408 ev_loop (w->other, EVLOOP_NONBLOCK); 3676 ev_run (w->other, EVRUN_NOWAIT);
2409} 3677}
2410 3678
2411static void 3679static void
2412embed_io_cb (EV_P_ ev_io *io, int revents) 3680embed_io_cb (EV_P_ ev_io *io, int revents)
2413{ 3681{
2414 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3682 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2415 3683
2416 if (ev_cb (w)) 3684 if (ev_cb (w))
2417 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3685 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2418 else 3686 else
2419 ev_loop (w->other, EVLOOP_NONBLOCK); 3687 ev_run (w->other, EVRUN_NOWAIT);
2420} 3688}
2421 3689
2422static void 3690static void
2423embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3691embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2424{ 3692{
2425 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3693 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2426 3694
2427 { 3695 {
2428 struct ev_loop *loop = w->other; 3696 EV_P = w->other;
2429 3697
2430 while (fdchangecnt) 3698 while (fdchangecnt)
2431 { 3699 {
2432 fd_reify (EV_A); 3700 fd_reify (EV_A);
2433 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3701 ev_run (EV_A_ EVRUN_NOWAIT);
2434 } 3702 }
2435 } 3703 }
3704}
3705
3706static void
3707embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3708{
3709 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3710
3711 ev_embed_stop (EV_A_ w);
3712
3713 {
3714 EV_P = w->other;
3715
3716 ev_loop_fork (EV_A);
3717 ev_run (EV_A_ EVRUN_NOWAIT);
3718 }
3719
3720 ev_embed_start (EV_A_ w);
2436} 3721}
2437 3722
2438#if 0 3723#if 0
2439static void 3724static void
2440embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3725embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2448{ 3733{
2449 if (expect_false (ev_is_active (w))) 3734 if (expect_false (ev_is_active (w)))
2450 return; 3735 return;
2451 3736
2452 { 3737 {
2453 struct ev_loop *loop = w->other; 3738 EV_P = w->other;
2454 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3739 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); 3740 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2456 } 3741 }
3742
3743 EV_FREQUENT_CHECK;
2457 3744
2458 ev_set_priority (&w->io, ev_priority (w)); 3745 ev_set_priority (&w->io, ev_priority (w));
2459 ev_io_start (EV_A_ &w->io); 3746 ev_io_start (EV_A_ &w->io);
2460 3747
2461 ev_prepare_init (&w->prepare, embed_prepare_cb); 3748 ev_prepare_init (&w->prepare, embed_prepare_cb);
2462 ev_set_priority (&w->prepare, EV_MINPRI); 3749 ev_set_priority (&w->prepare, EV_MINPRI);
2463 ev_prepare_start (EV_A_ &w->prepare); 3750 ev_prepare_start (EV_A_ &w->prepare);
2464 3751
3752 ev_fork_init (&w->fork, embed_fork_cb);
3753 ev_fork_start (EV_A_ &w->fork);
3754
2465 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 3755 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2466 3756
2467 ev_start (EV_A_ (W)w, 1); 3757 ev_start (EV_A_ (W)w, 1);
3758
3759 EV_FREQUENT_CHECK;
2468} 3760}
2469 3761
2470void 3762void
2471ev_embed_stop (EV_P_ ev_embed *w) 3763ev_embed_stop (EV_P_ ev_embed *w)
2472{ 3764{
2473 clear_pending (EV_A_ (W)w); 3765 clear_pending (EV_A_ (W)w);
2474 if (expect_false (!ev_is_active (w))) 3766 if (expect_false (!ev_is_active (w)))
2475 return; 3767 return;
2476 3768
3769 EV_FREQUENT_CHECK;
3770
2477 ev_io_stop (EV_A_ &w->io); 3771 ev_io_stop (EV_A_ &w->io);
2478 ev_prepare_stop (EV_A_ &w->prepare); 3772 ev_prepare_stop (EV_A_ &w->prepare);
3773 ev_fork_stop (EV_A_ &w->fork);
2479 3774
2480 ev_stop (EV_A_ (W)w); 3775 ev_stop (EV_A_ (W)w);
3776
3777 EV_FREQUENT_CHECK;
2481} 3778}
2482#endif 3779#endif
2483 3780
2484#if EV_FORK_ENABLE 3781#if EV_FORK_ENABLE
2485void 3782void
2486ev_fork_start (EV_P_ ev_fork *w) 3783ev_fork_start (EV_P_ ev_fork *w)
2487{ 3784{
2488 if (expect_false (ev_is_active (w))) 3785 if (expect_false (ev_is_active (w)))
2489 return; 3786 return;
2490 3787
3788 EV_FREQUENT_CHECK;
3789
2491 ev_start (EV_A_ (W)w, ++forkcnt); 3790 ev_start (EV_A_ (W)w, ++forkcnt);
2492 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 3791 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2493 forks [forkcnt - 1] = w; 3792 forks [forkcnt - 1] = w;
3793
3794 EV_FREQUENT_CHECK;
2494} 3795}
2495 3796
2496void 3797void
2497ev_fork_stop (EV_P_ ev_fork *w) 3798ev_fork_stop (EV_P_ ev_fork *w)
2498{ 3799{
2499 clear_pending (EV_A_ (W)w); 3800 clear_pending (EV_A_ (W)w);
2500 if (expect_false (!ev_is_active (w))) 3801 if (expect_false (!ev_is_active (w)))
2501 return; 3802 return;
2502 3803
3804 EV_FREQUENT_CHECK;
3805
2503 { 3806 {
2504 int active = ((W)w)->active; 3807 int active = ev_active (w);
3808
2505 forks [active - 1] = forks [--forkcnt]; 3809 forks [active - 1] = forks [--forkcnt];
2506 ((W)forks [active - 1])->active = active; 3810 ev_active (forks [active - 1]) = active;
2507 } 3811 }
2508 3812
2509 ev_stop (EV_A_ (W)w); 3813 ev_stop (EV_A_ (W)w);
3814
3815 EV_FREQUENT_CHECK;
3816}
3817#endif
3818
3819#if EV_CLEANUP_ENABLE
3820void
3821ev_cleanup_start (EV_P_ ev_cleanup *w)
3822{
3823 if (expect_false (ev_is_active (w)))
3824 return;
3825
3826 EV_FREQUENT_CHECK;
3827
3828 ev_start (EV_A_ (W)w, ++cleanupcnt);
3829 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
3830 cleanups [cleanupcnt - 1] = w;
3831
3832 /* cleanup watchers should never keep a refcount on the loop */
3833 ev_unref (EV_A);
3834 EV_FREQUENT_CHECK;
3835}
3836
3837void
3838ev_cleanup_stop (EV_P_ ev_cleanup *w)
3839{
3840 clear_pending (EV_A_ (W)w);
3841 if (expect_false (!ev_is_active (w)))
3842 return;
3843
3844 EV_FREQUENT_CHECK;
3845 ev_ref (EV_A);
3846
3847 {
3848 int active = ev_active (w);
3849
3850 cleanups [active - 1] = cleanups [--cleanupcnt];
3851 ev_active (cleanups [active - 1]) = active;
3852 }
3853
3854 ev_stop (EV_A_ (W)w);
3855
3856 EV_FREQUENT_CHECK;
2510} 3857}
2511#endif 3858#endif
2512 3859
2513#if EV_ASYNC_ENABLE 3860#if EV_ASYNC_ENABLE
2514void 3861void
2515ev_async_start (EV_P_ ev_async *w) 3862ev_async_start (EV_P_ ev_async *w)
2516{ 3863{
2517 if (expect_false (ev_is_active (w))) 3864 if (expect_false (ev_is_active (w)))
2518 return; 3865 return;
2519 3866
3867 w->sent = 0;
3868
2520 evpipe_init (EV_A); 3869 evpipe_init (EV_A);
3870
3871 EV_FREQUENT_CHECK;
2521 3872
2522 ev_start (EV_A_ (W)w, ++asynccnt); 3873 ev_start (EV_A_ (W)w, ++asynccnt);
2523 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 3874 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2524 asyncs [asynccnt - 1] = w; 3875 asyncs [asynccnt - 1] = w;
3876
3877 EV_FREQUENT_CHECK;
2525} 3878}
2526 3879
2527void 3880void
2528ev_async_stop (EV_P_ ev_async *w) 3881ev_async_stop (EV_P_ ev_async *w)
2529{ 3882{
2530 clear_pending (EV_A_ (W)w); 3883 clear_pending (EV_A_ (W)w);
2531 if (expect_false (!ev_is_active (w))) 3884 if (expect_false (!ev_is_active (w)))
2532 return; 3885 return;
2533 3886
3887 EV_FREQUENT_CHECK;
3888
2534 { 3889 {
2535 int active = ((W)w)->active; 3890 int active = ev_active (w);
3891
2536 asyncs [active - 1] = asyncs [--asynccnt]; 3892 asyncs [active - 1] = asyncs [--asynccnt];
2537 ((W)asyncs [active - 1])->active = active; 3893 ev_active (asyncs [active - 1]) = active;
2538 } 3894 }
2539 3895
2540 ev_stop (EV_A_ (W)w); 3896 ev_stop (EV_A_ (W)w);
3897
3898 EV_FREQUENT_CHECK;
2541} 3899}
2542 3900
2543void 3901void
2544ev_async_send (EV_P_ ev_async *w) 3902ev_async_send (EV_P_ ev_async *w)
2545{ 3903{
2546 w->sent = 1; 3904 w->sent = 1;
2547 evpipe_write (EV_A_ &gotasync); 3905 evpipe_write (EV_A_ &async_pending);
2548} 3906}
2549#endif 3907#endif
2550 3908
2551/*****************************************************************************/ 3909/*****************************************************************************/
2552 3910
… …
2562once_cb (EV_P_ struct ev_once *once, int revents) 3920once_cb (EV_P_ struct ev_once *once, int revents)
2563{ 3921{
2564 void (*cb)(int revents, void *arg) = once->cb; 3922 void (*cb)(int revents, void *arg) = once->cb;
2565 void *arg = once->arg; 3923 void *arg = once->arg;
2566 3924
2567 ev_io_stop (EV_A_ &once->io); 3925 ev_io_stop (EV_A_ &once->io);
2568 ev_timer_stop (EV_A_ &once->to); 3926 ev_timer_stop (EV_A_ &once->to);
2569 ev_free (once); 3927 ev_free (once);
2570 3928
2571 cb (revents, arg); 3929 cb (revents, arg);
2572} 3930}
2573 3931
2574static void 3932static void
2575once_cb_io (EV_P_ ev_io *w, int revents) 3933once_cb_io (EV_P_ ev_io *w, int revents)
2576{ 3934{
2577 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3935 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3936
3937 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2578} 3938}
2579 3939
2580static void 3940static void
2581once_cb_to (EV_P_ ev_timer *w, int revents) 3941once_cb_to (EV_P_ ev_timer *w, int revents)
2582{ 3942{
2583 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3943 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3944
3945 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2584} 3946}
2585 3947
2586void 3948void
2587ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3949ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2588{ 3950{
2589 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3951 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
2590 3952
2591 if (expect_false (!once)) 3953 if (expect_false (!once))
2592 { 3954 {
2593 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3955 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
2594 return; 3956 return;
2595 } 3957 }
2596 3958
2597 once->cb = cb; 3959 once->cb = cb;
2598 once->arg = arg; 3960 once->arg = arg;
… …
2610 ev_timer_set (&once->to, timeout, 0.); 3972 ev_timer_set (&once->to, timeout, 0.);
2611 ev_timer_start (EV_A_ &once->to); 3973 ev_timer_start (EV_A_ &once->to);
2612 } 3974 }
2613} 3975}
2614 3976
3977/*****************************************************************************/
3978
3979#if EV_WALK_ENABLE
3980void ecb_cold
3981ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3982{
3983 int i, j;
3984 ev_watcher_list *wl, *wn;
3985
3986 if (types & (EV_IO | EV_EMBED))
3987 for (i = 0; i < anfdmax; ++i)
3988 for (wl = anfds [i].head; wl; )
3989 {
3990 wn = wl->next;
3991
3992#if EV_EMBED_ENABLE
3993 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3994 {
3995 if (types & EV_EMBED)
3996 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3997 }
3998 else
3999#endif
4000#if EV_USE_INOTIFY
4001 if (ev_cb ((ev_io *)wl) == infy_cb)
4002 ;
4003 else
4004#endif
4005 if ((ev_io *)wl != &pipe_w)
4006 if (types & EV_IO)
4007 cb (EV_A_ EV_IO, wl);
4008
4009 wl = wn;
4010 }
4011
4012 if (types & (EV_TIMER | EV_STAT))
4013 for (i = timercnt + HEAP0; i-- > HEAP0; )
4014#if EV_STAT_ENABLE
4015 /*TODO: timer is not always active*/
4016 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
4017 {
4018 if (types & EV_STAT)
4019 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
4020 }
4021 else
4022#endif
4023 if (types & EV_TIMER)
4024 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
4025
4026#if EV_PERIODIC_ENABLE
4027 if (types & EV_PERIODIC)
4028 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
4029 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
4030#endif
4031
4032#if EV_IDLE_ENABLE
4033 if (types & EV_IDLE)
4034 for (j = NUMPRI; i--; )
4035 for (i = idlecnt [j]; i--; )
4036 cb (EV_A_ EV_IDLE, idles [j][i]);
4037#endif
4038
4039#if EV_FORK_ENABLE
4040 if (types & EV_FORK)
4041 for (i = forkcnt; i--; )
4042 if (ev_cb (forks [i]) != embed_fork_cb)
4043 cb (EV_A_ EV_FORK, forks [i]);
4044#endif
4045
4046#if EV_ASYNC_ENABLE
4047 if (types & EV_ASYNC)
4048 for (i = asynccnt; i--; )
4049 cb (EV_A_ EV_ASYNC, asyncs [i]);
4050#endif
4051
4052#if EV_PREPARE_ENABLE
4053 if (types & EV_PREPARE)
4054 for (i = preparecnt; i--; )
4055# if EV_EMBED_ENABLE
4056 if (ev_cb (prepares [i]) != embed_prepare_cb)
4057# endif
4058 cb (EV_A_ EV_PREPARE, prepares [i]);
4059#endif
4060
4061#if EV_CHECK_ENABLE
4062 if (types & EV_CHECK)
4063 for (i = checkcnt; i--; )
4064 cb (EV_A_ EV_CHECK, checks [i]);
4065#endif
4066
4067#if EV_SIGNAL_ENABLE
4068 if (types & EV_SIGNAL)
4069 for (i = 0; i < EV_NSIG - 1; ++i)
4070 for (wl = signals [i].head; wl; )
4071 {
4072 wn = wl->next;
4073 cb (EV_A_ EV_SIGNAL, wl);
4074 wl = wn;
4075 }
4076#endif
4077
4078#if EV_CHILD_ENABLE
4079 if (types & EV_CHILD)
4080 for (i = (EV_PID_HASHSIZE); i--; )
4081 for (wl = childs [i]; wl; )
4082 {
4083 wn = wl->next;
4084 cb (EV_A_ EV_CHILD, wl);
4085 wl = wn;
4086 }
4087#endif
4088/* EV_STAT 0x00001000 /* stat data changed */
4089/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
4090}
4091#endif
4092
2615#if EV_MULTIPLICITY 4093#if EV_MULTIPLICITY
2616 #include "ev_wrap.h" 4094 #include "ev_wrap.h"
2617#endif 4095#endif
2618 4096
2619#ifdef __cplusplus 4097EV_CPP(})
2620}
2621#endif
2622 4098

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