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Comparing libev/ev.c (file contents):
Revision 1.236 by root, Wed May 7 14:46:22 2008 UTC vs.
Revision 1.388 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 */
273# include <stdint.h> 412# include <stdint.h>
274# ifdef __cplusplus 413# ifndef EFD_NONBLOCK
275extern "C" { 414# define EFD_NONBLOCK O_NONBLOCK
276# endif 415# endif
277int eventfd (unsigned int initval, int flags); 416# ifndef EFD_CLOEXEC
278# ifdef __cplusplus 417# ifdef O_CLOEXEC
279} 418# define EFD_CLOEXEC O_CLOEXEC
419# else
420# define EFD_CLOEXEC 02000000
421# endif
280# endif 422# endif
423EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
424#endif
425
426#if EV_USE_SIGNALFD
427/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
428# include <stdint.h>
429# ifndef SFD_NONBLOCK
430# define SFD_NONBLOCK O_NONBLOCK
431# endif
432# ifndef SFD_CLOEXEC
433# ifdef O_CLOEXEC
434# define SFD_CLOEXEC O_CLOEXEC
435# else
436# define SFD_CLOEXEC 02000000
437# endif
438# endif
439EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
440
441struct signalfd_siginfo
442{
443 uint32_t ssi_signo;
444 char pad[128 - sizeof (uint32_t)];
445};
281#endif 446#endif
282 447
283/**/ 448/**/
284 449
450#if EV_VERIFY >= 3
451# define EV_FREQUENT_CHECK ev_verify (EV_A)
452#else
453# define EV_FREQUENT_CHECK do { } while (0)
454#endif
455
285/* 456/*
286 * This is used to avoid floating point rounding problems. 457 * This is used to work around floating point rounding problems.
287 * It is added to ev_rt_now when scheduling periodics
288 * to ensure progress, time-wise, even when rounding
289 * errors are against us.
290 * This value is good at least till the year 4000. 458 * This value is good at least till the year 4000.
291 * Better solutions welcome.
292 */ 459 */
293#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 460#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
461/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
294 462
295#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 463#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
296#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 464#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
297/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
298 465
299#if __GNUC__ >= 4 466#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
300# define expect(expr,value) __builtin_expect ((expr),(value)) 467#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
301# define noinline __attribute__ ((noinline)) 468
469/* the following are taken from libecb */
470/* ecb.h start */
471
472/* many compilers define _GNUC_ to some versions but then only implement
473 * what their idiot authors think are the "more important" extensions,
474 * causing enourmous grief in return for some better fake benchmark numbers.
475 * or so.
476 * we try to detect these and simply assume they are not gcc - if they have
477 * an issue with that they should have done it right in the first place.
478 */
479#ifndef ECB_GCC_VERSION
480 #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__)
481 #define ECB_GCC_VERSION(major,minor) 0
482 #else
483 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
484 #endif
485#endif
486
487#if __cplusplus
488 #define ecb_inline static inline
489#elif ECB_GCC_VERSION(2,5)
490 #define ecb_inline static __inline__
491#elif ECB_C99
492 #define ecb_inline static inline
302#else 493#else
303# define expect(expr,value) (expr) 494 #define ecb_inline static
304# define noinline
305# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
306# define inline
307# endif 495#endif
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
308#endif 508 #endif
509#endif
309 510
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. */
310#define expect_false(expr) expect ((expr) != 0, 0) 568#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
311#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
312#define inline_size static inline 576#define inline_size ecb_inline
313 577
314#if EV_MINIMAL 578#if EV_FEATURE_CODE
579# define inline_speed ecb_inline
580#else
315# 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)
316#else 588#else
317# define inline_speed static inline
318#endif
319
320#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
321#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 589# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
590#endif
322 591
323#define EMPTY /* required for microsofts broken pseudo-c compiler */ 592#define EMPTY /* required for microsofts broken pseudo-c compiler */
324#define EMPTY2(a,b) /* used to suppress some warnings */ 593#define EMPTY2(a,b) /* used to suppress some warnings */
325 594
326typedef ev_watcher *W; 595typedef ev_watcher *W;
… …
328typedef ev_watcher_time *WT; 597typedef ev_watcher_time *WT;
329 598
330#define ev_active(w) ((W)(w))->active 599#define ev_active(w) ((W)(w))->active
331#define ev_at(w) ((WT)(w))->at 600#define ev_at(w) ((WT)(w))->at
332 601
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
333#if EV_USE_MONOTONIC 608#if EV_USE_MONOTONIC
334/* sig_atomic_t is used to avoid per-thread variables or locking but still */
335/* giving it a reasonably high chance of working on typical architetcures */
336static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 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)
337#endif 620#endif
338 621
339#ifdef _WIN32 622#ifdef _WIN32
340# include "ev_win32.c" 623# include "ev_win32.c"
341#endif 624#endif
342 625
343/*****************************************************************************/ 626/*****************************************************************************/
344 627
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
345static void (*syserr_cb)(const char *msg); 726static void (*syserr_cb)(const char *msg);
346 727
347void 728void ecb_cold
348ev_set_syserr_cb (void (*cb)(const char *msg)) 729ev_set_syserr_cb (void (*cb)(const char *msg))
349{ 730{
350 syserr_cb = cb; 731 syserr_cb = cb;
351} 732}
352 733
353static void noinline 734static void noinline ecb_cold
354syserr (const char *msg) 735ev_syserr (const char *msg)
355{ 736{
356 if (!msg) 737 if (!msg)
357 msg = "(libev) system error"; 738 msg = "(libev) system error";
358 739
359 if (syserr_cb) 740 if (syserr_cb)
360 syserr_cb (msg); 741 syserr_cb (msg);
361 else 742 else
362 { 743 {
744#if EV_AVOID_STDIO
745 ev_printerr (msg);
746 ev_printerr (": ");
747 ev_printerr (strerror (errno));
748 ev_printerr ("\n");
749#else
363 perror (msg); 750 perror (msg);
751#endif
364 abort (); 752 abort ();
365 } 753 }
366} 754}
367 755
368static void * 756static void *
369ev_realloc_emul (void *ptr, long size) 757ev_realloc_emul (void *ptr, long size)
370{ 758{
759#if __GLIBC__
760 return realloc (ptr, size);
761#else
371 /* some systems, notably openbsd and darwin, fail to properly 762 /* some systems, notably openbsd and darwin, fail to properly
372 * implement realloc (x, 0) (as required by both ansi c-98 and 763 * implement realloc (x, 0) (as required by both ansi c-89 and
373 * the single unix specification, so work around them here. 764 * the single unix specification, so work around them here.
374 */ 765 */
375 766
376 if (size) 767 if (size)
377 return realloc (ptr, size); 768 return realloc (ptr, size);
378 769
379 free (ptr); 770 free (ptr);
380 return 0; 771 return 0;
772#endif
381} 773}
382 774
383static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 775static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
384 776
385void 777void ecb_cold
386ev_set_allocator (void *(*cb)(void *ptr, long size)) 778ev_set_allocator (void *(*cb)(void *ptr, long size))
387{ 779{
388 alloc = cb; 780 alloc = cb;
389} 781}
390 782
… …
393{ 785{
394 ptr = alloc (ptr, size); 786 ptr = alloc (ptr, size);
395 787
396 if (!ptr && size) 788 if (!ptr && size)
397 { 789 {
790#if EV_AVOID_STDIO
791 ev_printerr ("(libev) memory allocation failed, aborting.\n");
792#else
398 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 793 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
794#endif
399 abort (); 795 abort ();
400 } 796 }
401 797
402 return ptr; 798 return ptr;
403} 799}
… …
405#define ev_malloc(size) ev_realloc (0, (size)) 801#define ev_malloc(size) ev_realloc (0, (size))
406#define ev_free(ptr) ev_realloc ((ptr), 0) 802#define ev_free(ptr) ev_realloc ((ptr), 0)
407 803
408/*****************************************************************************/ 804/*****************************************************************************/
409 805
806/* set in reify when reification needed */
807#define EV_ANFD_REIFY 1
808
809/* file descriptor info structure */
410typedef struct 810typedef struct
411{ 811{
412 WL head; 812 WL head;
413 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 */
414 unsigned char reify; 816 unsigned char unused;
817#if EV_USE_EPOLL
818 unsigned int egen; /* generation counter to counter epoll bugs */
819#endif
415#if EV_SELECT_IS_WINSOCKET 820#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
416 SOCKET handle; 821 SOCKET handle;
417#endif 822#endif
823#if EV_USE_IOCP
824 OVERLAPPED or, ow;
825#endif
418} ANFD; 826} ANFD;
419 827
828/* stores the pending event set for a given watcher */
420typedef struct 829typedef struct
421{ 830{
422 W w; 831 W w;
423 int events; 832 int events; /* the pending event set for the given watcher */
424} ANPENDING; 833} ANPENDING;
425 834
426#if EV_USE_INOTIFY 835#if EV_USE_INOTIFY
836/* hash table entry per inotify-id */
427typedef struct 837typedef struct
428{ 838{
429 WL head; 839 WL head;
430} 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)
431#endif 861#endif
432 862
433#if EV_MULTIPLICITY 863#if EV_MULTIPLICITY
434 864
435 struct ev_loop 865 struct ev_loop
… …
454 884
455 static int ev_default_loop_ptr; 885 static int ev_default_loop_ptr;
456 886
457#endif 887#endif
458 888
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
459/*****************************************************************************/ 901/*****************************************************************************/
460 902
903#ifndef EV_HAVE_EV_TIME
461ev_tstamp 904ev_tstamp
462ev_time (void) 905ev_time (void)
463{ 906{
464#if EV_USE_REALTIME 907#if EV_USE_REALTIME
908 if (expect_true (have_realtime))
909 {
465 struct timespec ts; 910 struct timespec ts;
466 clock_gettime (CLOCK_REALTIME, &ts); 911 clock_gettime (CLOCK_REALTIME, &ts);
467 return ts.tv_sec + ts.tv_nsec * 1e-9; 912 return ts.tv_sec + ts.tv_nsec * 1e-9;
468#else 913 }
914#endif
915
469 struct timeval tv; 916 struct timeval tv;
470 gettimeofday (&tv, 0); 917 gettimeofday (&tv, 0);
471 return tv.tv_sec + tv.tv_usec * 1e-6; 918 return tv.tv_sec + tv.tv_usec * 1e-6;
472#endif
473} 919}
920#endif
474 921
475ev_tstamp inline_size 922inline_size ev_tstamp
476get_clock (void) 923get_clock (void)
477{ 924{
478#if EV_USE_MONOTONIC 925#if EV_USE_MONOTONIC
479 if (expect_true (have_monotonic)) 926 if (expect_true (have_monotonic))
480 { 927 {
… …
501 if (delay > 0.) 948 if (delay > 0.)
502 { 949 {
503#if EV_USE_NANOSLEEP 950#if EV_USE_NANOSLEEP
504 struct timespec ts; 951 struct timespec ts;
505 952
506 ts.tv_sec = (time_t)delay; 953 EV_TS_SET (ts, delay);
507 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
508
509 nanosleep (&ts, 0); 954 nanosleep (&ts, 0);
510#elif defined(_WIN32) 955#elif defined(_WIN32)
511 Sleep ((unsigned long)(delay * 1e3)); 956 Sleep ((unsigned long)(delay * 1e3));
512#else 957#else
513 struct timeval tv; 958 struct timeval tv;
514 959
515 tv.tv_sec = (time_t)delay; 960 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
516 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 961 /* something not guaranteed by newer posix versions, but guaranteed */
517 962 /* by older ones */
963 EV_TV_SET (tv, delay);
518 select (0, 0, 0, 0, &tv); 964 select (0, 0, 0, 0, &tv);
519#endif 965#endif
520 } 966 }
521} 967}
522 968
523/*****************************************************************************/ 969/*****************************************************************************/
524 970
525#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 971#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
526 972
527int inline_size 973/* find a suitable new size for the given array, */
974/* hopefully by rounding to a nice-to-malloc size */
975inline_size int
528array_nextsize (int elem, int cur, int cnt) 976array_nextsize (int elem, int cur, int cnt)
529{ 977{
530 int ncur = cur + 1; 978 int ncur = cur + 1;
531 979
532 do 980 do
… …
543 } 991 }
544 992
545 return ncur; 993 return ncur;
546} 994}
547 995
548static noinline void * 996static void * noinline ecb_cold
549array_realloc (int elem, void *base, int *cur, int cnt) 997array_realloc (int elem, void *base, int *cur, int cnt)
550{ 998{
551 *cur = array_nextsize (elem, *cur, cnt); 999 *cur = array_nextsize (elem, *cur, cnt);
552 return ev_realloc (base, elem * *cur); 1000 return ev_realloc (base, elem * *cur);
553} 1001}
1002
1003#define array_init_zero(base,count) \
1004 memset ((void *)(base), 0, sizeof (*(base)) * (count))
554 1005
555#define array_needsize(type,base,cur,cnt,init) \ 1006#define array_needsize(type,base,cur,cnt,init) \
556 if (expect_false ((cnt) > (cur))) \ 1007 if (expect_false ((cnt) > (cur))) \
557 { \ 1008 { \
558 int ocur_ = (cur); \ 1009 int ecb_unused ocur_ = (cur); \
559 (base) = (type *)array_realloc \ 1010 (base) = (type *)array_realloc \
560 (sizeof (type), (base), &(cur), (cnt)); \ 1011 (sizeof (type), (base), &(cur), (cnt)); \
561 init ((base) + (ocur_), (cur) - ocur_); \ 1012 init ((base) + (ocur_), (cur) - ocur_); \
562 } 1013 }
563 1014
… …
570 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 1021 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
571 } 1022 }
572#endif 1023#endif
573 1024
574#define array_free(stem, idx) \ 1025#define array_free(stem, idx) \
575 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
576 1027
577/*****************************************************************************/ 1028/*****************************************************************************/
1029
1030/* dummy callback for pending events */
1031static void noinline
1032pendingcb (EV_P_ ev_prepare *w, int revents)
1033{
1034}
578 1035
579void noinline 1036void noinline
580ev_feed_event (EV_P_ void *w, int revents) 1037ev_feed_event (EV_P_ void *w, int revents)
581{ 1038{
582 W w_ = (W)w; 1039 W w_ = (W)w;
… …
591 pendings [pri][w_->pending - 1].w = w_; 1048 pendings [pri][w_->pending - 1].w = w_;
592 pendings [pri][w_->pending - 1].events = revents; 1049 pendings [pri][w_->pending - 1].events = revents;
593 } 1050 }
594} 1051}
595 1052
596void 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
597queue_events (EV_P_ W *events, int eventcnt, int type) 1069queue_events (EV_P_ W *events, int eventcnt, int type)
598{ 1070{
599 int i; 1071 int i;
600 1072
601 for (i = 0; i < eventcnt; ++i) 1073 for (i = 0; i < eventcnt; ++i)
602 ev_feed_event (EV_A_ events [i], type); 1074 ev_feed_event (EV_A_ events [i], type);
603} 1075}
604 1076
605/*****************************************************************************/ 1077/*****************************************************************************/
606 1078
607void inline_size 1079inline_speed void
608anfds_init (ANFD *base, int count)
609{
610 while (count--)
611 {
612 base->head = 0;
613 base->events = EV_NONE;
614 base->reify = 0;
615
616 ++base;
617 }
618}
619
620void inline_speed
621fd_event (EV_P_ int fd, int revents) 1080fd_event_nocheck (EV_P_ int fd, int revents)
622{ 1081{
623 ANFD *anfd = anfds + fd; 1082 ANFD *anfd = anfds + fd;
624 ev_io *w; 1083 ev_io *w;
625 1084
626 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)
… …
630 if (ev) 1089 if (ev)
631 ev_feed_event (EV_A_ (W)w, ev); 1090 ev_feed_event (EV_A_ (W)w, ev);
632 } 1091 }
633} 1092}
634 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
635void 1105void
636ev_feed_fd_event (EV_P_ int fd, int revents) 1106ev_feed_fd_event (EV_P_ int fd, int revents)
637{ 1107{
638 if (fd >= 0 && fd < anfdmax) 1108 if (fd >= 0 && fd < anfdmax)
639 fd_event (EV_A_ fd, revents); 1109 fd_event_nocheck (EV_A_ fd, revents);
640} 1110}
641 1111
642void inline_size 1112/* make sure the external fd watch events are in-sync */
1113/* with the kernel/libev internal state */
1114inline_size void
643fd_reify (EV_P) 1115fd_reify (EV_P)
644{ 1116{
645 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
646 1143
647 for (i = 0; i < fdchangecnt; ++i) 1144 for (i = 0; i < fdchangecnt; ++i)
648 { 1145 {
649 int fd = fdchanges [i]; 1146 int fd = fdchanges [i];
650 ANFD *anfd = anfds + fd; 1147 ANFD *anfd = anfds + fd;
651 ev_io *w; 1148 ev_io *w;
652 1149
653 unsigned char events = 0; 1150 unsigned char o_events = anfd->events;
1151 unsigned char o_reify = anfd->reify;
654 1152
655 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1153 anfd->reify = 0;
656 events |= (unsigned char)w->events;
657 1154
658#if EV_SELECT_IS_WINSOCKET 1155 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
659 if (events)
660 { 1156 {
661 unsigned long argp; 1157 anfd->events = 0;
662 #ifdef EV_FD_TO_WIN32_HANDLE 1158
663 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1159 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
664 #else 1160 anfd->events |= (unsigned char)w->events;
665 anfd->handle = _get_osfhandle (fd); 1161
666 #endif 1162 if (o_events != anfd->events)
667 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 1163 o_reify = EV__IOFDSET; /* actually |= */
668 } 1164 }
669#endif
670 1165
671 { 1166 if (o_reify & EV__IOFDSET)
672 unsigned char o_events = anfd->events;
673 unsigned char o_reify = anfd->reify;
674
675 anfd->reify = 0;
676 anfd->events = events;
677
678 if (o_events != events || o_reify & EV_IOFDSET)
679 backend_modify (EV_A_ fd, o_events, events); 1167 backend_modify (EV_A_ fd, o_events, anfd->events);
680 }
681 } 1168 }
682 1169
683 fdchangecnt = 0; 1170 fdchangecnt = 0;
684} 1171}
685 1172
686void inline_size 1173/* something about the given fd changed */
1174inline_size void
687fd_change (EV_P_ int fd, int flags) 1175fd_change (EV_P_ int fd, int flags)
688{ 1176{
689 unsigned char reify = anfds [fd].reify; 1177 unsigned char reify = anfds [fd].reify;
690 anfds [fd].reify |= flags; 1178 anfds [fd].reify |= flags;
691 1179
… …
695 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1183 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
696 fdchanges [fdchangecnt - 1] = fd; 1184 fdchanges [fdchangecnt - 1] = fd;
697 } 1185 }
698} 1186}
699 1187
700void inline_speed 1188/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1189inline_speed void ecb_cold
701fd_kill (EV_P_ int fd) 1190fd_kill (EV_P_ int fd)
702{ 1191{
703 ev_io *w; 1192 ev_io *w;
704 1193
705 while ((w = (ev_io *)anfds [fd].head)) 1194 while ((w = (ev_io *)anfds [fd].head))
… …
707 ev_io_stop (EV_A_ w); 1196 ev_io_stop (EV_A_ w);
708 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);
709 } 1198 }
710} 1199}
711 1200
712int inline_size 1201/* check whether the given fd is actually valid, for error recovery */
1202inline_size int ecb_cold
713fd_valid (int fd) 1203fd_valid (int fd)
714{ 1204{
715#ifdef _WIN32 1205#ifdef _WIN32
716 return _get_osfhandle (fd) != -1; 1206 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
717#else 1207#else
718 return fcntl (fd, F_GETFD) != -1; 1208 return fcntl (fd, F_GETFD) != -1;
719#endif 1209#endif
720} 1210}
721 1211
722/* called on EBADF to verify fds */ 1212/* called on EBADF to verify fds */
723static void noinline 1213static void noinline ecb_cold
724fd_ebadf (EV_P) 1214fd_ebadf (EV_P)
725{ 1215{
726 int fd; 1216 int fd;
727 1217
728 for (fd = 0; fd < anfdmax; ++fd) 1218 for (fd = 0; fd < anfdmax; ++fd)
729 if (anfds [fd].events) 1219 if (anfds [fd].events)
730 if (!fd_valid (fd) == -1 && errno == EBADF) 1220 if (!fd_valid (fd) && errno == EBADF)
731 fd_kill (EV_A_ fd); 1221 fd_kill (EV_A_ fd);
732} 1222}
733 1223
734/* 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 */
735static void noinline 1225static void noinline ecb_cold
736fd_enomem (EV_P) 1226fd_enomem (EV_P)
737{ 1227{
738 int fd; 1228 int fd;
739 1229
740 for (fd = anfdmax; fd--; ) 1230 for (fd = anfdmax; fd--; )
741 if (anfds [fd].events) 1231 if (anfds [fd].events)
742 { 1232 {
743 fd_kill (EV_A_ fd); 1233 fd_kill (EV_A_ fd);
744 return; 1234 break;
745 } 1235 }
746} 1236}
747 1237
748/* 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 */
749static void noinline 1239static void noinline
… …
753 1243
754 for (fd = 0; fd < anfdmax; ++fd) 1244 for (fd = 0; fd < anfdmax; ++fd)
755 if (anfds [fd].events) 1245 if (anfds [fd].events)
756 { 1246 {
757 anfds [fd].events = 0; 1247 anfds [fd].events = 0;
1248 anfds [fd].emask = 0;
758 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1249 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
759 } 1250 }
760} 1251}
761 1252
1253/* used to prepare libev internal fd's */
1254/* this is not fork-safe */
1255inline_speed void
1256fd_intern (int fd)
1257{
1258#ifdef _WIN32
1259 unsigned long arg = 1;
1260 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1261#else
1262 fcntl (fd, F_SETFD, FD_CLOEXEC);
1263 fcntl (fd, F_SETFL, O_NONBLOCK);
1264#endif
1265}
1266
762/*****************************************************************************/ 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 */
763 1274
764/* 1275/*
765 * at the moment we allow libev the luxury of two heaps, 1276 * at the moment we allow libev the luxury of two heaps,
766 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap 1277 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap
767 * which is more cache-efficient. 1278 * which is more cache-efficient.
768 * the difference is about 5% with 50000+ watchers. 1279 * the difference is about 5% with 50000+ watchers.
769 */ 1280 */
770#define USE_4HEAP !EV_MINIMAL
771#if USE_4HEAP 1281#if EV_USE_4HEAP
772 1282
1283#define DHEAP 4
773#define HEAP0 3 /* index of first element in heap */ 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))
774 1287
775/* towards the root */ 1288/* away from the root */
776void inline_speed 1289inline_speed void
777upheap (WT *heap, int k) 1290downheap (ANHE *heap, int N, int k)
778{ 1291{
779 WT w = heap [k]; 1292 ANHE he = heap [k];
1293 ANHE *E = heap + N + HEAP0;
780 1294
781 for (;;) 1295 for (;;)
782 { 1296 {
783 int p = ((k - HEAP0 - 1) / 4) + HEAP0;
784
785 if (p >= HEAP0 || heap [p]->at <= w->at)
786 break;
787
788 heap [k] = heap [p];
789 ev_active (heap [k]) = k;
790 k = p;
791 }
792
793 heap [k] = w;
794 ev_active (heap [k]) = k;
795}
796
797/* away from the root */
798void inline_speed
799downheap (WT *heap, int N, int k)
800{
801 WT w = heap [k];
802 WT *E = heap + N + HEAP0;
803
804 for (;;)
805 {
806 ev_tstamp minat; 1297 ev_tstamp minat;
807 WT *minpos; 1298 ANHE *minpos;
808 WT *pos = heap + 4 * (k - HEAP0) + HEAP0; 1299 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
809 1300
810 // find minimum child 1301 /* find minimum child */
811 if (expect_true (pos +3 < E)) 1302 if (expect_true (pos + DHEAP - 1 < E))
812 { 1303 {
813 /* fast path */
814 (minpos = pos + 0), (minat = (*minpos)->at); 1304 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
815 if (pos [1]->at < minat) (minpos = pos + 1), (minat = (*minpos)->at); 1305 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
816 if (pos [2]->at < minat) (minpos = pos + 2), (minat = (*minpos)->at); 1306 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
817 if (pos [3]->at < minat) (minpos = pos + 3), (minat = (*minpos)->at); 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));
818 } 1315 }
819 else 1316 else
820 {
821 /* slow path */
822 if (pos >= E)
823 break;
824 (minpos = pos + 0), (minat = (*minpos)->at);
825 if (pos + 1 < E && pos [1]->at < minat) (minpos = pos + 1), (minat = (*minpos)->at);
826 if (pos + 2 < E && pos [2]->at < minat) (minpos = pos + 2), (minat = (*minpos)->at);
827 if (pos + 3 < E && pos [3]->at < minat) (minpos = pos + 3), (minat = (*minpos)->at);
828 }
829
830 if (w->at <= minat)
831 break; 1317 break;
832 1318
833 ev_active (*minpos) = k; 1319 if (ANHE_at (he) <= minat)
1320 break;
1321
834 heap [k] = *minpos; 1322 heap [k] = *minpos;
1323 ev_active (ANHE_w (*minpos)) = k;
835 1324
836 k = minpos - heap; 1325 k = minpos - heap;
837 } 1326 }
838 1327
839 heap [k] = w; 1328 heap [k] = he;
840 ev_active (heap [k]) = k; 1329 ev_active (ANHE_w (he)) = k;
841} 1330}
842 1331
843#else // 4HEAP 1332#else /* 4HEAP */
844 1333
845#define HEAP0 1 1334#define HEAP0 1
1335#define HPARENT(k) ((k) >> 1)
1336#define UPHEAP_DONE(p,k) (!(p))
846 1337
847/* towards the root */ 1338/* away from the root */
848void inline_speed 1339inline_speed void
849upheap (WT *heap, int k) 1340downheap (ANHE *heap, int N, int k)
850{ 1341{
851 WT w = heap [k]; 1342 ANHE he = heap [k];
852 1343
853 for (;;) 1344 for (;;)
854 { 1345 {
855 int p = k >> 1; 1346 int c = k << 1;
856 1347
857 /* maybe we could use a dummy element at heap [0]? */ 1348 if (c >= N + HEAP0)
858 if (!p || heap [p]->at <= w->at)
859 break; 1349 break;
860 1350
861 heap [k] = heap [p]; 1351 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
862 ev_active (heap [k]) = k; 1352 ? 1 : 0;
863 k = p;
864 }
865 1353
866 heap [k] = w; 1354 if (ANHE_at (he) <= ANHE_at (heap [c]))
867 ev_active (heap [k]) = k;
868}
869
870/* away from the root */
871void inline_speed
872downheap (WT *heap, int N, int k)
873{
874 WT w = heap [k];
875
876 for (;;)
877 {
878 int c = k << 1;
879
880 if (c > N)
881 break; 1355 break;
882 1356
883 c += c + 1 < N && heap [c]->at > heap [c + 1]->at
884 ? 1 : 0;
885
886 if (w->at <= heap [c]->at)
887 break;
888
889 heap [k] = heap [c]; 1357 heap [k] = heap [c];
890 ((W)heap [k])->active = k; 1358 ev_active (ANHE_w (heap [k])) = k;
891 1359
892 k = c; 1360 k = c;
893 } 1361 }
894 1362
895 heap [k] = w; 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];
896 ev_active (heap [k]) = k; 1382 ev_active (ANHE_w (heap [k])) = k;
897} 1383 k = p;
898#endif 1384 }
899 1385
900void inline_size 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
901adjustheap (WT *heap, int N, int k) 1392adjustheap (ANHE *heap, int N, int k)
902{ 1393{
1394 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
903 upheap (heap, k); 1395 upheap (heap, k);
1396 else
904 downheap (heap, N, k); 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);
905} 1410}
906 1411
907/*****************************************************************************/ 1412/*****************************************************************************/
908 1413
1414/* associate signal watchers to a signal signal */
909typedef struct 1415typedef struct
910{ 1416{
1417 EV_ATOMIC_T pending;
1418#if EV_MULTIPLICITY
1419 EV_P;
1420#endif
911 WL head; 1421 WL head;
912 EV_ATOMIC_T gotsig;
913} ANSIG; 1422} ANSIG;
914 1423
915static ANSIG *signals; 1424static ANSIG signals [EV_NSIG - 1];
916static int signalmax;
917
918static EV_ATOMIC_T gotsig;
919
920void inline_size
921signals_init (ANSIG *base, int count)
922{
923 while (count--)
924 {
925 base->head = 0;
926 base->gotsig = 0;
927
928 ++base;
929 }
930}
931 1425
932/*****************************************************************************/ 1426/*****************************************************************************/
933 1427
934void inline_speed 1428#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
935fd_intern (int fd)
936{
937#ifdef _WIN32
938 int arg = 1;
939 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
940#else
941 fcntl (fd, F_SETFD, FD_CLOEXEC);
942 fcntl (fd, F_SETFL, O_NONBLOCK);
943#endif
944}
945 1429
946static void noinline 1430static void noinline ecb_cold
947evpipe_init (EV_P) 1431evpipe_init (EV_P)
948{ 1432{
949 if (!ev_is_active (&pipeev)) 1433 if (!ev_is_active (&pipe_w))
950 { 1434 {
951#if EV_USE_EVENTFD 1435# if EV_USE_EVENTFD
1436 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1437 if (evfd < 0 && errno == EINVAL)
952 if ((evfd = eventfd (0, 0)) >= 0) 1438 evfd = eventfd (0, 0);
1439
1440 if (evfd >= 0)
953 { 1441 {
954 evpipe [0] = -1; 1442 evpipe [0] = -1;
955 fd_intern (evfd); 1443 fd_intern (evfd); /* doing it twice doesn't hurt */
956 ev_io_set (&pipeev, evfd, EV_READ); 1444 ev_io_set (&pipe_w, evfd, EV_READ);
957 } 1445 }
958 else 1446 else
959#endif 1447# endif
960 { 1448 {
961 while (pipe (evpipe)) 1449 while (pipe (evpipe))
962 syserr ("(libev) error creating signal/async pipe"); 1450 ev_syserr ("(libev) error creating signal/async pipe");
963 1451
964 fd_intern (evpipe [0]); 1452 fd_intern (evpipe [0]);
965 fd_intern (evpipe [1]); 1453 fd_intern (evpipe [1]);
966 ev_io_set (&pipeev, evpipe [0], EV_READ); 1454 ev_io_set (&pipe_w, evpipe [0], EV_READ);
967 } 1455 }
968 1456
969 ev_io_start (EV_A_ &pipeev); 1457 ev_io_start (EV_A_ &pipe_w);
970 ev_unref (EV_A); /* watcher should not keep loop alive */ 1458 ev_unref (EV_A); /* watcher should not keep loop alive */
971 } 1459 }
972} 1460}
973 1461
974void inline_size 1462inline_speed void
975evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1463evpipe_write (EV_P_ EV_ATOMIC_T *flag)
976{ 1464{
977 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)
978 { 1477 {
1478 int old_errno;
1479
1480 pipe_write_skipped = 0; /* just an optimsiation, no fence needed */
1481
979 int old_errno = errno; /* save errno because write might clobber it */ 1482 old_errno = errno; /* save errno because write will clobber it */
980
981 *flag = 1;
982 1483
983#if EV_USE_EVENTFD 1484#if EV_USE_EVENTFD
984 if (evfd >= 0) 1485 if (evfd >= 0)
985 { 1486 {
986 uint64_t counter = 1; 1487 uint64_t counter = 1;
987 write (evfd, &counter, sizeof (uint64_t)); 1488 write (evfd, &counter, sizeof (uint64_t));
988 } 1489 }
989 else 1490 else
990#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. */
991 write (evpipe [1], &old_errno, 1); 1498 write (evpipe [1], &(evpipe [1]), 1);
1499 }
992 1500
993 errno = old_errno; 1501 errno = old_errno;
994 } 1502 }
995} 1503}
996 1504
1505/* called whenever the libev signal pipe */
1506/* got some events (signal, async) */
997static void 1507static void
998pipecb (EV_P_ ev_io *iow, int revents) 1508pipecb (EV_P_ ev_io *iow, int revents)
999{ 1509{
1510 int i;
1511
1512 if (revents & EV_READ)
1513 {
1000#if EV_USE_EVENTFD 1514#if EV_USE_EVENTFD
1001 if (evfd >= 0) 1515 if (evfd >= 0)
1002 { 1516 {
1003 uint64_t counter; 1517 uint64_t counter;
1004 read (evfd, &counter, sizeof (uint64_t)); 1518 read (evfd, &counter, sizeof (uint64_t));
1005 } 1519 }
1006 else 1520 else
1007#endif 1521#endif
1008 { 1522 {
1009 char dummy; 1523 char dummy;
1524 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1010 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)
1011 } 1533 {
1534 sig_pending = 0;
1012 1535
1013 if (gotsig && ev_is_default_loop (EV_A)) 1536 for (i = EV_NSIG - 1; i--; )
1014 { 1537 if (expect_false (signals [i].pending))
1015 int signum;
1016 gotsig = 0;
1017
1018 for (signum = signalmax; signum--; )
1019 if (signals [signum].gotsig)
1020 ev_feed_signal_event (EV_A_ signum + 1); 1538 ev_feed_signal_event (EV_A_ i + 1);
1021 } 1539 }
1540#endif
1022 1541
1023#if EV_ASYNC_ENABLE 1542#if EV_ASYNC_ENABLE
1024 if (gotasync) 1543 if (async_pending)
1025 { 1544 {
1026 int i; 1545 async_pending = 0;
1027 gotasync = 0;
1028 1546
1029 for (i = asynccnt; i--; ) 1547 for (i = asynccnt; i--; )
1030 if (asyncs [i]->sent) 1548 if (asyncs [i]->sent)
1031 { 1549 {
1032 asyncs [i]->sent = 0; 1550 asyncs [i]->sent = 0;
… …
1036#endif 1554#endif
1037} 1555}
1038 1556
1039/*****************************************************************************/ 1557/*****************************************************************************/
1040 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
1041static void 1576static void
1042ev_sighandler (int signum) 1577ev_sighandler (int signum)
1043{ 1578{
1044#if EV_MULTIPLICITY
1045 struct ev_loop *loop = &default_loop_struct;
1046#endif
1047
1048#if _WIN32 1579#ifdef _WIN32
1049 signal (signum, ev_sighandler); 1580 signal (signum, ev_sighandler);
1050#endif 1581#endif
1051 1582
1052 signals [signum - 1].gotsig = 1; 1583 ev_feed_signal (signum);
1053 evpipe_write (EV_A_ &gotsig);
1054} 1584}
1055 1585
1056void noinline 1586void noinline
1057ev_feed_signal_event (EV_P_ int signum) 1587ev_feed_signal_event (EV_P_ int signum)
1058{ 1588{
1059 WL w; 1589 WL w;
1060 1590
1591 if (expect_false (signum <= 0 || signum > EV_NSIG))
1592 return;
1593
1594 --signum;
1595
1061#if EV_MULTIPLICITY 1596#if EV_MULTIPLICITY
1062 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 */
1063#endif 1598 /* or, likely more useful, feeding a signal nobody is waiting for */
1064 1599
1065 --signum; 1600 if (expect_false (signals [signum].loop != EV_A))
1066
1067 if (signum < 0 || signum >= signalmax)
1068 return; 1601 return;
1602#endif
1069 1603
1070 signals [signum].gotsig = 0; 1604 signals [signum].pending = 0;
1071 1605
1072 for (w = signals [signum].head; w; w = w->next) 1606 for (w = signals [signum].head; w; w = w->next)
1073 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1607 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1074} 1608}
1075 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
1076/*****************************************************************************/ 1632/*****************************************************************************/
1077 1633
1634#if EV_CHILD_ENABLE
1078static WL childs [EV_PID_HASHSIZE]; 1635static WL childs [EV_PID_HASHSIZE];
1079
1080#ifndef _WIN32
1081 1636
1082static ev_signal childev; 1637static ev_signal childev;
1083 1638
1084#ifndef WIFCONTINUED 1639#ifndef WIFCONTINUED
1085# define WIFCONTINUED(status) 0 1640# define WIFCONTINUED(status) 0
1086#endif 1641#endif
1087 1642
1088void inline_speed 1643/* handle a single child status event */
1644inline_speed void
1089child_reap (EV_P_ int chain, int pid, int status) 1645child_reap (EV_P_ int chain, int pid, int status)
1090{ 1646{
1091 ev_child *w; 1647 ev_child *w;
1092 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1648 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1093 1649
1094 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)
1095 { 1651 {
1096 if ((w->pid == pid || !w->pid) 1652 if ((w->pid == pid || !w->pid)
1097 && (!traced || (w->flags & 1))) 1653 && (!traced || (w->flags & 1)))
1098 { 1654 {
1099 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 */
… …
1106 1662
1107#ifndef WCONTINUED 1663#ifndef WCONTINUED
1108# define WCONTINUED 0 1664# define WCONTINUED 0
1109#endif 1665#endif
1110 1666
1667/* called on sigchld etc., calls waitpid */
1111static void 1668static void
1112childcb (EV_P_ ev_signal *sw, int revents) 1669childcb (EV_P_ ev_signal *sw, int revents)
1113{ 1670{
1114 int pid, status; 1671 int pid, status;
1115 1672
… …
1123 /* 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 */
1124 /* 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 */
1125 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1682 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1126 1683
1127 child_reap (EV_A_ pid, pid, status); 1684 child_reap (EV_A_ pid, pid, status);
1128 if (EV_PID_HASHSIZE > 1) 1685 if ((EV_PID_HASHSIZE) > 1)
1129 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 */
1130} 1687}
1131 1688
1132#endif 1689#endif
1133 1690
1134/*****************************************************************************/ 1691/*****************************************************************************/
1135 1692
1693#if EV_USE_IOCP
1694# include "ev_iocp.c"
1695#endif
1136#if EV_USE_PORT 1696#if EV_USE_PORT
1137# include "ev_port.c" 1697# include "ev_port.c"
1138#endif 1698#endif
1139#if EV_USE_KQUEUE 1699#if EV_USE_KQUEUE
1140# include "ev_kqueue.c" 1700# include "ev_kqueue.c"
… …
1147#endif 1707#endif
1148#if EV_USE_SELECT 1708#if EV_USE_SELECT
1149# include "ev_select.c" 1709# include "ev_select.c"
1150#endif 1710#endif
1151 1711
1152int 1712int ecb_cold
1153ev_version_major (void) 1713ev_version_major (void)
1154{ 1714{
1155 return EV_VERSION_MAJOR; 1715 return EV_VERSION_MAJOR;
1156} 1716}
1157 1717
1158int 1718int ecb_cold
1159ev_version_minor (void) 1719ev_version_minor (void)
1160{ 1720{
1161 return EV_VERSION_MINOR; 1721 return EV_VERSION_MINOR;
1162} 1722}
1163 1723
1164/* 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 */
1165int inline_size 1725int inline_size ecb_cold
1166enable_secure (void) 1726enable_secure (void)
1167{ 1727{
1168#ifdef _WIN32 1728#ifdef _WIN32
1169 return 0; 1729 return 0;
1170#else 1730#else
1171 return getuid () != geteuid () 1731 return getuid () != geteuid ()
1172 || getgid () != getegid (); 1732 || getgid () != getegid ();
1173#endif 1733#endif
1174} 1734}
1175 1735
1176unsigned int 1736unsigned int ecb_cold
1177ev_supported_backends (void) 1737ev_supported_backends (void)
1178{ 1738{
1179 unsigned int flags = 0; 1739 unsigned int flags = 0;
1180 1740
1181 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 1741 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1185 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 1745 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1186 1746
1187 return flags; 1747 return flags;
1188} 1748}
1189 1749
1190unsigned int 1750unsigned int ecb_cold
1191ev_recommended_backends (void) 1751ev_recommended_backends (void)
1192{ 1752{
1193 unsigned int flags = ev_supported_backends (); 1753 unsigned int flags = ev_supported_backends ();
1194 1754
1195#ifndef __NetBSD__ 1755#ifndef __NetBSD__
1196 /* kqueue is borked on everything but netbsd apparently */ 1756 /* kqueue is borked on everything but netbsd apparently */
1197 /* 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 */
1198 flags &= ~EVBACKEND_KQUEUE; 1758 flags &= ~EVBACKEND_KQUEUE;
1199#endif 1759#endif
1200#ifdef __APPLE__ 1760#ifdef __APPLE__
1201 // flags &= ~EVBACKEND_KQUEUE; for documentation 1761 /* only select works correctly on that "unix-certified" platform */
1202 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) */
1203#endif 1767#endif
1204 1768
1205 return flags; 1769 return flags;
1206} 1770}
1207 1771
1208unsigned int 1772unsigned int ecb_cold
1209ev_embeddable_backends (void) 1773ev_embeddable_backends (void)
1210{ 1774{
1211 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1775 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1212 1776
1213 /* 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 */
1214 /* please fix it and tell me how to detect the fix */ 1778 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1215 flags &= ~EVBACKEND_EPOLL; 1779 flags &= ~EVBACKEND_EPOLL;
1216 1780
1217 return flags; 1781 return flags;
1218} 1782}
1219 1783
1220unsigned int 1784unsigned int
1221ev_backend (EV_P) 1785ev_backend (EV_P)
1222{ 1786{
1223 return backend; 1787 return backend;
1224} 1788}
1225 1789
1790#if EV_FEATURE_API
1226unsigned int 1791unsigned int
1227ev_loop_count (EV_P) 1792ev_iteration (EV_P)
1228{ 1793{
1229 return loop_count; 1794 return loop_count;
1795}
1796
1797unsigned int
1798ev_depth (EV_P)
1799{
1800 return loop_depth;
1230} 1801}
1231 1802
1232void 1803void
1233ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1804ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1234{ 1805{
… …
1239ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1810ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1240{ 1811{
1241 timeout_blocktime = interval; 1812 timeout_blocktime = interval;
1242} 1813}
1243 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 */
1244static void noinline 1842static void noinline ecb_cold
1245loop_init (EV_P_ unsigned int flags) 1843loop_init (EV_P_ unsigned int flags)
1246{ 1844{
1247 if (!backend) 1845 if (!backend)
1248 { 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
1249#if EV_USE_MONOTONIC 1859#if EV_USE_MONOTONIC
1860 if (!have_monotonic)
1250 { 1861 {
1251 struct timespec ts; 1862 struct timespec ts;
1863
1252 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1864 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1253 have_monotonic = 1; 1865 have_monotonic = 1;
1254 } 1866 }
1255#endif
1256
1257 ev_rt_now = ev_time ();
1258 mn_now = get_clock ();
1259 now_floor = mn_now;
1260 rtmn_diff = ev_rt_now - mn_now;
1261
1262 io_blocktime = 0.;
1263 timeout_blocktime = 0.;
1264 backend = 0;
1265 backend_fd = -1;
1266 gotasync = 0;
1267#if EV_USE_INOTIFY
1268 fs_fd = -2;
1269#endif 1867#endif
1270 1868
1271 /* pid check not overridable via env */ 1869 /* pid check not overridable via env */
1272#ifndef _WIN32 1870#ifndef _WIN32
1273 if (flags & EVFLAG_FORKCHECK) 1871 if (flags & EVFLAG_FORKCHECK)
… …
1277 if (!(flags & EVFLAG_NOENV) 1875 if (!(flags & EVFLAG_NOENV)
1278 && !enable_secure () 1876 && !enable_secure ()
1279 && getenv ("LIBEV_FLAGS")) 1877 && getenv ("LIBEV_FLAGS"))
1280 flags = atoi (getenv ("LIBEV_FLAGS")); 1878 flags = atoi (getenv ("LIBEV_FLAGS"));
1281 1879
1282 if (!(flags & 0x0000ffffU)) 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))
1283 flags |= ev_recommended_backends (); 1906 flags |= ev_recommended_backends ();
1284 1907
1908#if EV_USE_IOCP
1909 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1910#endif
1285#if EV_USE_PORT 1911#if EV_USE_PORT
1286 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1912 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1287#endif 1913#endif
1288#if EV_USE_KQUEUE 1914#if EV_USE_KQUEUE
1289 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1915 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1296#endif 1922#endif
1297#if EV_USE_SELECT 1923#if EV_USE_SELECT
1298 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1924 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1299#endif 1925#endif
1300 1926
1927 ev_prepare_init (&pending_w, pendingcb);
1928
1929#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1301 ev_init (&pipeev, pipecb); 1930 ev_init (&pipe_w, pipecb);
1302 ev_set_priority (&pipeev, EV_MAXPRI); 1931 ev_set_priority (&pipe_w, EV_MAXPRI);
1932#endif
1303 } 1933 }
1304} 1934}
1305 1935
1306static void noinline 1936/* free up a loop structure */
1937void ecb_cold
1307loop_destroy (EV_P) 1938ev_loop_destroy (EV_P)
1308{ 1939{
1309 int i; 1940 int i;
1310 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
1311 if (ev_is_active (&pipeev)) 1965 if (ev_is_active (&pipe_w))
1312 { 1966 {
1313 ev_ref (EV_A); /* signal watcher */ 1967 /*ev_ref (EV_A);*/
1314 ev_io_stop (EV_A_ &pipeev); 1968 /*ev_io_stop (EV_A_ &pipe_w);*/
1315 1969
1316#if EV_USE_EVENTFD 1970#if EV_USE_EVENTFD
1317 if (evfd >= 0) 1971 if (evfd >= 0)
1318 close (evfd); 1972 close (evfd);
1319#endif 1973#endif
1320 1974
1321 if (evpipe [0] >= 0) 1975 if (evpipe [0] >= 0)
1322 { 1976 {
1323 close (evpipe [0]); 1977 EV_WIN32_CLOSE_FD (evpipe [0]);
1324 close (evpipe [1]); 1978 EV_WIN32_CLOSE_FD (evpipe [1]);
1325 } 1979 }
1326 } 1980 }
1981
1982#if EV_USE_SIGNALFD
1983 if (ev_is_active (&sigfd_w))
1984 close (sigfd);
1985#endif
1327 1986
1328#if EV_USE_INOTIFY 1987#if EV_USE_INOTIFY
1329 if (fs_fd >= 0) 1988 if (fs_fd >= 0)
1330 close (fs_fd); 1989 close (fs_fd);
1331#endif 1990#endif
1332 1991
1333 if (backend_fd >= 0) 1992 if (backend_fd >= 0)
1334 close (backend_fd); 1993 close (backend_fd);
1335 1994
1995#if EV_USE_IOCP
1996 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1997#endif
1336#if EV_USE_PORT 1998#if EV_USE_PORT
1337 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1999 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1338#endif 2000#endif
1339#if EV_USE_KQUEUE 2001#if EV_USE_KQUEUE
1340 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2002 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1355#if EV_IDLE_ENABLE 2017#if EV_IDLE_ENABLE
1356 array_free (idle, [i]); 2018 array_free (idle, [i]);
1357#endif 2019#endif
1358 } 2020 }
1359 2021
1360 ev_free (anfds); anfdmax = 0; 2022 ev_free (anfds); anfds = 0; anfdmax = 0;
1361 2023
1362 /* 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);
1363 array_free (fdchange, EMPTY); 2026 array_free (fdchange, EMPTY);
1364 array_free (timer, EMPTY); 2027 array_free (timer, EMPTY);
1365#if EV_PERIODIC_ENABLE 2028#if EV_PERIODIC_ENABLE
1366 array_free (periodic, EMPTY); 2029 array_free (periodic, EMPTY);
1367#endif 2030#endif
1368#if EV_FORK_ENABLE 2031#if EV_FORK_ENABLE
1369 array_free (fork, EMPTY); 2032 array_free (fork, EMPTY);
1370#endif 2033#endif
2034#if EV_CLEANUP_ENABLE
2035 array_free (cleanup, EMPTY);
2036#endif
1371 array_free (prepare, EMPTY); 2037 array_free (prepare, EMPTY);
1372 array_free (check, EMPTY); 2038 array_free (check, EMPTY);
1373#if EV_ASYNC_ENABLE 2039#if EV_ASYNC_ENABLE
1374 array_free (async, EMPTY); 2040 array_free (async, EMPTY);
1375#endif 2041#endif
1376 2042
1377 backend = 0; 2043 backend = 0;
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
1378} 2053}
1379 2054
1380#if EV_USE_INOTIFY 2055#if EV_USE_INOTIFY
1381void inline_size infy_fork (EV_P); 2056inline_size void infy_fork (EV_P);
1382#endif 2057#endif
1383 2058
1384void inline_size 2059inline_size void
1385loop_fork (EV_P) 2060loop_fork (EV_P)
1386{ 2061{
1387#if EV_USE_PORT 2062#if EV_USE_PORT
1388 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 2063 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1389#endif 2064#endif
… …
1395#endif 2070#endif
1396#if EV_USE_INOTIFY 2071#if EV_USE_INOTIFY
1397 infy_fork (EV_A); 2072 infy_fork (EV_A);
1398#endif 2073#endif
1399 2074
1400 if (ev_is_active (&pipeev)) 2075 if (ev_is_active (&pipe_w))
1401 { 2076 {
1402 /* this "locks" the handlers against writing to the pipe */ 2077 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1403 /* while we modify the fd vars */
1404 gotsig = 1;
1405#if EV_ASYNC_ENABLE
1406 gotasync = 1;
1407#endif
1408 2078
1409 ev_ref (EV_A); 2079 ev_ref (EV_A);
1410 ev_io_stop (EV_A_ &pipeev); 2080 ev_io_stop (EV_A_ &pipe_w);
1411 2081
1412#if EV_USE_EVENTFD 2082#if EV_USE_EVENTFD
1413 if (evfd >= 0) 2083 if (evfd >= 0)
1414 close (evfd); 2084 close (evfd);
1415#endif 2085#endif
1416 2086
1417 if (evpipe [0] >= 0) 2087 if (evpipe [0] >= 0)
1418 { 2088 {
1419 close (evpipe [0]); 2089 EV_WIN32_CLOSE_FD (evpipe [0]);
1420 close (evpipe [1]); 2090 EV_WIN32_CLOSE_FD (evpipe [1]);
1421 } 2091 }
1422 2092
2093#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1423 evpipe_init (EV_A); 2094 evpipe_init (EV_A);
1424 /* now iterate over everything, in case we missed something */ 2095 /* now iterate over everything, in case we missed something */
1425 pipecb (EV_A_ &pipeev, EV_READ); 2096 pipecb (EV_A_ &pipe_w, EV_READ);
2097#endif
1426 } 2098 }
1427 2099
1428 postfork = 0; 2100 postfork = 0;
1429} 2101}
1430 2102
1431#if EV_MULTIPLICITY 2103#if EV_MULTIPLICITY
2104
1432struct ev_loop * 2105struct ev_loop * ecb_cold
1433ev_loop_new (unsigned int flags) 2106ev_loop_new (unsigned int flags)
1434{ 2107{
1435 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));
1436 2109
1437 memset (loop, 0, sizeof (struct ev_loop)); 2110 memset (EV_A, 0, sizeof (struct ev_loop));
1438
1439 loop_init (EV_A_ flags); 2111 loop_init (EV_A_ flags);
1440 2112
1441 if (ev_backend (EV_A)) 2113 if (ev_backend (EV_A))
1442 return loop; 2114 return EV_A;
1443 2115
2116 ev_free (EV_A);
1444 return 0; 2117 return 0;
1445} 2118}
1446 2119
1447void 2120#endif /* multiplicity */
1448ev_loop_destroy (EV_P)
1449{
1450 loop_destroy (EV_A);
1451 ev_free (loop);
1452}
1453 2121
1454void 2122#if EV_VERIFY
1455ev_loop_fork (EV_P) 2123static void noinline ecb_cold
2124verify_watcher (EV_P_ W w)
1456{ 2125{
1457 postfork = 1; /* must be in line with ev_default_fork */ 2126 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
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
1458} 2231}
1459#endif 2232#endif
1460 2233
1461#if EV_MULTIPLICITY 2234#if EV_MULTIPLICITY
1462struct ev_loop * 2235struct ev_loop * ecb_cold
1463ev_default_loop_init (unsigned int flags)
1464#else 2236#else
1465int 2237int
2238#endif
1466ev_default_loop (unsigned int flags) 2239ev_default_loop (unsigned int flags)
1467#endif
1468{ 2240{
1469 if (!ev_default_loop_ptr) 2241 if (!ev_default_loop_ptr)
1470 { 2242 {
1471#if EV_MULTIPLICITY 2243#if EV_MULTIPLICITY
1472 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2244 EV_P = ev_default_loop_ptr = &default_loop_struct;
1473#else 2245#else
1474 ev_default_loop_ptr = 1; 2246 ev_default_loop_ptr = 1;
1475#endif 2247#endif
1476 2248
1477 loop_init (EV_A_ flags); 2249 loop_init (EV_A_ flags);
1478 2250
1479 if (ev_backend (EV_A)) 2251 if (ev_backend (EV_A))
1480 { 2252 {
1481#ifndef _WIN32 2253#if EV_CHILD_ENABLE
1482 ev_signal_init (&childev, childcb, SIGCHLD); 2254 ev_signal_init (&childev, childcb, SIGCHLD);
1483 ev_set_priority (&childev, EV_MAXPRI); 2255 ev_set_priority (&childev, EV_MAXPRI);
1484 ev_signal_start (EV_A_ &childev); 2256 ev_signal_start (EV_A_ &childev);
1485 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2257 ev_unref (EV_A); /* child watcher should not keep loop alive */
1486#endif 2258#endif
… …
1491 2263
1492 return ev_default_loop_ptr; 2264 return ev_default_loop_ptr;
1493} 2265}
1494 2266
1495void 2267void
1496ev_default_destroy (void) 2268ev_loop_fork (EV_P)
1497{ 2269{
1498#if EV_MULTIPLICITY
1499 struct ev_loop *loop = ev_default_loop_ptr;
1500#endif
1501
1502#ifndef _WIN32
1503 ev_ref (EV_A); /* child watcher */
1504 ev_signal_stop (EV_A_ &childev);
1505#endif
1506
1507 loop_destroy (EV_A);
1508}
1509
1510void
1511ev_default_fork (void)
1512{
1513#if EV_MULTIPLICITY
1514 struct ev_loop *loop = ev_default_loop_ptr;
1515#endif
1516
1517 if (backend)
1518 postfork = 1; /* must be in line with ev_loop_fork */ 2270 postfork = 1; /* must be in line with ev_default_fork */
1519} 2271}
1520 2272
1521/*****************************************************************************/ 2273/*****************************************************************************/
1522 2274
1523void 2275void
1524ev_invoke (EV_P_ void *w, int revents) 2276ev_invoke (EV_P_ void *w, int revents)
1525{ 2277{
1526 EV_CB_INVOKE ((W)w, revents); 2278 EV_CB_INVOKE ((W)w, revents);
1527} 2279}
1528 2280
1529void inline_speed 2281unsigned int
1530call_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)
1531{ 2295{
1532 int pri; 2296 int pri;
1533 2297
1534 for (pri = NUMPRI; pri--; ) 2298 for (pri = NUMPRI; pri--; )
1535 while (pendingcnt [pri]) 2299 while (pendingcnt [pri])
1536 { 2300 {
1537 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2301 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1538 2302
1539 if (expect_true (p->w))
1540 {
1541 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1542
1543 p->w->pending = 0; 2303 p->w->pending = 0;
1544 EV_CB_INVOKE (p->w, p->events); 2304 EV_CB_INVOKE (p->w, p->events);
1545 } 2305 EV_FREQUENT_CHECK;
1546 } 2306 }
1547} 2307}
1548 2308
1549#if EV_IDLE_ENABLE 2309#if EV_IDLE_ENABLE
1550void inline_size 2310/* make idle watchers pending. this handles the "call-idle */
2311/* only when higher priorities are idle" logic */
2312inline_size void
1551idle_reify (EV_P) 2313idle_reify (EV_P)
1552{ 2314{
1553 if (expect_false (idleall)) 2315 if (expect_false (idleall))
1554 { 2316 {
1555 int pri; 2317 int pri;
… …
1567 } 2329 }
1568 } 2330 }
1569} 2331}
1570#endif 2332#endif
1571 2333
1572void inline_size 2334/* make timers pending */
2335inline_size void
1573timers_reify (EV_P) 2336timers_reify (EV_P)
1574{ 2337{
2338 EV_FREQUENT_CHECK;
2339
1575 while (timercnt && ev_at (timers [HEAP0]) <= mn_now) 2340 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1576 { 2341 {
1577 ev_timer *w = (ev_timer *)timers [HEAP0]; 2342 do
1578
1579 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1580
1581 /* first reschedule or stop timer */
1582 if (w->repeat)
1583 { 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
1584 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2355 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1585 2356
1586 ev_at (w) += w->repeat; 2357 ANHE_at_cache (timers [HEAP0]);
1587 if (ev_at (w) < mn_now)
1588 ev_at (w) = mn_now;
1589
1590 downheap (timers, timercnt, 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);
1591 } 2365 }
1592 else 2366 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1593 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1594 2367
1595 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 2368 feed_reverse_done (EV_A_ EV_TIMER);
1596 } 2369 }
1597} 2370}
1598 2371
1599#if EV_PERIODIC_ENABLE 2372#if EV_PERIODIC_ENABLE
1600void inline_size 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
1601periodics_reify (EV_P) 2400periodics_reify (EV_P)
1602{ 2401{
2402 EV_FREQUENT_CHECK;
2403
1603 while (periodiccnt && ev_at (periodics [HEAP0]) <= ev_rt_now) 2404 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1604 { 2405 {
1605 ev_periodic *w = (ev_periodic *)periodics [HEAP0]; 2406 int feed_count = 0;
1606 2407
1607 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2408 do
1608
1609 /* first reschedule or stop timer */
1610 if (w->reschedule_cb)
1611 { 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 {
1612 ev_at (w) = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON); 2417 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2418
1613 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) > ev_rt_now)); 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]);
1614 downheap (periodics, periodiccnt, 1); 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);
1615 } 2435 }
1616 else if (w->interval) 2436 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1617 {
1618 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1619 if (ev_at (w) - ev_rt_now <= TIME_EPSILON) ev_at (w) += w->interval;
1620 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ev_at (w) > ev_rt_now));
1621 downheap (periodics, periodiccnt, HEAP0);
1622 }
1623 else
1624 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1625 2437
1626 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2438 feed_reverse_done (EV_A_ EV_PERIODIC);
1627 } 2439 }
1628} 2440}
1629 2441
2442/* simply recalculate all periodics */
2443/* TODO: maybe ensure that at least one event happens when jumping forward? */
1630static void noinline 2444static void noinline ecb_cold
1631periodics_reschedule (EV_P) 2445periodics_reschedule (EV_P)
1632{ 2446{
1633 int i; 2447 int i;
1634 2448
1635 /* adjust periodics after time jump */ 2449 /* adjust periodics after time jump */
1636 for (i = 1; i <= periodiccnt; ++i) 2450 for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
1637 { 2451 {
1638 ev_periodic *w = (ev_periodic *)periodics [i]; 2452 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1639 2453
1640 if (w->reschedule_cb) 2454 if (w->reschedule_cb)
1641 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2455 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1642 else if (w->interval) 2456 else if (w->interval)
1643 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * 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)
1644 } 2473 {
1645 2474 ANHE *he = timers + i + HEAP0;
1646 /* now rebuild the heap */ 2475 ANHE_w (*he)->at += adjust;
1647 for (i = periodiccnt >> 1; --i; ) 2476 ANHE_at_cache (*he);
1648 downheap (periodics, periodiccnt, i + HEAP0); 2477 }
1649} 2478}
1650#endif
1651 2479
1652void inline_speed 2480/* fetch new monotonic and realtime times from the kernel */
2481/* also detect if there was a timejump, and act accordingly */
2482inline_speed void
1653time_update (EV_P_ ev_tstamp max_block) 2483time_update (EV_P_ ev_tstamp max_block)
1654{ 2484{
1655 int i;
1656
1657#if EV_USE_MONOTONIC 2485#if EV_USE_MONOTONIC
1658 if (expect_true (have_monotonic)) 2486 if (expect_true (have_monotonic))
1659 { 2487 {
2488 int i;
1660 ev_tstamp odiff = rtmn_diff; 2489 ev_tstamp odiff = rtmn_diff;
1661 2490
1662 mn_now = get_clock (); 2491 mn_now = get_clock ();
1663 2492
1664 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2493 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1680 * doesn't hurt either as we only do this on time-jumps or 2509 * doesn't hurt either as we only do this on time-jumps or
1681 * in the unlikely event of having been preempted here. 2510 * in the unlikely event of having been preempted here.
1682 */ 2511 */
1683 for (i = 4; --i; ) 2512 for (i = 4; --i; )
1684 { 2513 {
2514 ev_tstamp diff;
1685 rtmn_diff = ev_rt_now - mn_now; 2515 rtmn_diff = ev_rt_now - mn_now;
1686 2516
2517 diff = odiff - rtmn_diff;
2518
1687 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2519 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1688 return; /* all is well */ 2520 return; /* all is well */
1689 2521
1690 ev_rt_now = ev_time (); 2522 ev_rt_now = ev_time ();
1691 mn_now = get_clock (); 2523 mn_now = get_clock ();
1692 now_floor = mn_now; 2524 now_floor = mn_now;
1693 } 2525 }
1694 2526
2527 /* no timer adjustment, as the monotonic clock doesn't jump */
2528 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1695# if EV_PERIODIC_ENABLE 2529# if EV_PERIODIC_ENABLE
1696 periodics_reschedule (EV_A); 2530 periodics_reschedule (EV_A);
1697# endif 2531# endif
1698 /* no timer adjustment, as the monotonic clock doesn't jump */
1699 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1700 } 2532 }
1701 else 2533 else
1702#endif 2534#endif
1703 { 2535 {
1704 ev_rt_now = ev_time (); 2536 ev_rt_now = ev_time ();
1705 2537
1706 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))
1707 { 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);
1708#if EV_PERIODIC_ENABLE 2542#if EV_PERIODIC_ENABLE
1709 periodics_reschedule (EV_A); 2543 periodics_reschedule (EV_A);
1710#endif 2544#endif
1711 /* adjust timers. this is easy, as the offset is the same for all of them */
1712 for (i = 1; i <= timercnt; ++i)
1713 ev_at (timers [i]) += ev_rt_now - mn_now;
1714 } 2545 }
1715 2546
1716 mn_now = ev_rt_now; 2547 mn_now = ev_rt_now;
1717 } 2548 }
1718} 2549}
1719 2550
1720void 2551void
1721ev_ref (EV_P)
1722{
1723 ++activecnt;
1724}
1725
1726void
1727ev_unref (EV_P)
1728{
1729 --activecnt;
1730}
1731
1732static int loop_done;
1733
1734void
1735ev_loop (EV_P_ int flags) 2552ev_run (EV_P_ int flags)
1736{ 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
1737 loop_done = EVUNLOOP_CANCEL; 2560 loop_done = EVBREAK_CANCEL;
1738 2561
1739 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 */
1740 2563
1741 do 2564 do
1742 { 2565 {
2566#if EV_VERIFY >= 2
2567 ev_verify (EV_A);
2568#endif
2569
1743#ifndef _WIN32 2570#ifndef _WIN32
1744 if (expect_false (curpid)) /* penalise the forking check even more */ 2571 if (expect_false (curpid)) /* penalise the forking check even more */
1745 if (expect_false (getpid () != curpid)) 2572 if (expect_false (getpid () != curpid))
1746 { 2573 {
1747 curpid = getpid (); 2574 curpid = getpid ();
… …
1753 /* we might have forked, so queue fork handlers */ 2580 /* we might have forked, so queue fork handlers */
1754 if (expect_false (postfork)) 2581 if (expect_false (postfork))
1755 if (forkcnt) 2582 if (forkcnt)
1756 { 2583 {
1757 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2584 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1758 call_pending (EV_A); 2585 EV_INVOKE_PENDING;
1759 } 2586 }
1760#endif 2587#endif
1761 2588
2589#if EV_PREPARE_ENABLE
1762 /* queue prepare watchers (and execute them) */ 2590 /* queue prepare watchers (and execute them) */
1763 if (expect_false (preparecnt)) 2591 if (expect_false (preparecnt))
1764 { 2592 {
1765 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2593 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1766 call_pending (EV_A); 2594 EV_INVOKE_PENDING;
1767 } 2595 }
2596#endif
1768 2597
1769 if (expect_false (!activecnt)) 2598 if (expect_false (loop_done))
1770 break; 2599 break;
1771 2600
1772 /* we might have forked, so reify kernel state if necessary */ 2601 /* we might have forked, so reify kernel state if necessary */
1773 if (expect_false (postfork)) 2602 if (expect_false (postfork))
1774 loop_fork (EV_A); 2603 loop_fork (EV_A);
… …
1779 /* calculate blocking time */ 2608 /* calculate blocking time */
1780 { 2609 {
1781 ev_tstamp waittime = 0.; 2610 ev_tstamp waittime = 0.;
1782 ev_tstamp sleeptime = 0.; 2611 ev_tstamp sleeptime = 0.;
1783 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
1784 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2624 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
1785 { 2625 {
1786 /* update time to cancel out callback processing overhead */
1787 time_update (EV_A_ 1e100);
1788
1789 waittime = MAX_BLOCKTIME; 2626 waittime = MAX_BLOCKTIME;
1790 2627
1791 if (timercnt) 2628 if (timercnt)
1792 { 2629 {
1793 ev_tstamp to = ev_at (timers [HEAP0]) - mn_now + backend_fudge; 2630 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
1794 if (waittime > to) waittime = to; 2631 if (waittime > to) waittime = to;
1795 } 2632 }
1796 2633
1797#if EV_PERIODIC_ENABLE 2634#if EV_PERIODIC_ENABLE
1798 if (periodiccnt) 2635 if (periodiccnt)
1799 { 2636 {
1800 ev_tstamp to = ev_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2637 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
1801 if (waittime > to) waittime = to; 2638 if (waittime > to) waittime = to;
1802 } 2639 }
1803#endif 2640#endif
1804 2641
2642 /* don't let timeouts decrease the waittime below timeout_blocktime */
1805 if (expect_false (waittime < timeout_blocktime)) 2643 if (expect_false (waittime < timeout_blocktime))
1806 waittime = timeout_blocktime; 2644 waittime = timeout_blocktime;
1807 2645
1808 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;
1809 2650
2651 /* extra check because io_blocktime is commonly 0 */
1810 if (expect_true (sleeptime > io_blocktime)) 2652 if (expect_false (io_blocktime))
1811 sleeptime = io_blocktime;
1812
1813 if (sleeptime)
1814 { 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 {
1815 ev_sleep (sleeptime); 2661 ev_sleep (sleeptime);
1816 waittime -= sleeptime; 2662 waittime -= sleeptime;
2663 }
1817 } 2664 }
1818 } 2665 }
1819 2666
2667#if EV_FEATURE_API
1820 ++loop_count; 2668 ++loop_count;
2669#endif
2670 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
1821 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
1822 2682
1823 /* update ev_rt_now, do magic */ 2683 /* update ev_rt_now, do magic */
1824 time_update (EV_A_ waittime + sleeptime); 2684 time_update (EV_A_ waittime + sleeptime);
1825 } 2685 }
1826 2686
… …
1833#if EV_IDLE_ENABLE 2693#if EV_IDLE_ENABLE
1834 /* queue idle watchers unless other events are pending */ 2694 /* queue idle watchers unless other events are pending */
1835 idle_reify (EV_A); 2695 idle_reify (EV_A);
1836#endif 2696#endif
1837 2697
2698#if EV_CHECK_ENABLE
1838 /* queue check watchers, to be executed first */ 2699 /* queue check watchers, to be executed first */
1839 if (expect_false (checkcnt)) 2700 if (expect_false (checkcnt))
1840 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2701 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2702#endif
1841 2703
1842 call_pending (EV_A); 2704 EV_INVOKE_PENDING;
1843 } 2705 }
1844 while (expect_true ( 2706 while (expect_true (
1845 activecnt 2707 activecnt
1846 && !loop_done 2708 && !loop_done
1847 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2709 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
1848 )); 2710 ));
1849 2711
1850 if (loop_done == EVUNLOOP_ONE) 2712 if (loop_done == EVBREAK_ONE)
1851 loop_done = EVUNLOOP_CANCEL; 2713 loop_done = EVBREAK_CANCEL;
2714
2715#if EV_FEATURE_API
2716 --loop_depth;
2717#endif
1852} 2718}
1853 2719
1854void 2720void
1855ev_unloop (EV_P_ int how) 2721ev_break (EV_P_ int how)
1856{ 2722{
1857 loop_done = how; 2723 loop_done = how;
1858} 2724}
1859 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
1860/*****************************************************************************/ 2763/*****************************************************************************/
2764/* singly-linked list management, used when the expected list length is short */
1861 2765
1862void inline_size 2766inline_size void
1863wlist_add (WL *head, WL elem) 2767wlist_add (WL *head, WL elem)
1864{ 2768{
1865 elem->next = *head; 2769 elem->next = *head;
1866 *head = elem; 2770 *head = elem;
1867} 2771}
1868 2772
1869void inline_size 2773inline_size void
1870wlist_del (WL *head, WL elem) 2774wlist_del (WL *head, WL elem)
1871{ 2775{
1872 while (*head) 2776 while (*head)
1873 { 2777 {
1874 if (*head == elem) 2778 if (expect_true (*head == elem))
1875 { 2779 {
1876 *head = elem->next; 2780 *head = elem->next;
1877 return; 2781 break;
1878 } 2782 }
1879 2783
1880 head = &(*head)->next; 2784 head = &(*head)->next;
1881 } 2785 }
1882} 2786}
1883 2787
1884void inline_speed 2788/* internal, faster, version of ev_clear_pending */
2789inline_speed void
1885clear_pending (EV_P_ W w) 2790clear_pending (EV_P_ W w)
1886{ 2791{
1887 if (w->pending) 2792 if (w->pending)
1888 { 2793 {
1889 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2794 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1890 w->pending = 0; 2795 w->pending = 0;
1891 } 2796 }
1892} 2797}
1893 2798
1894int 2799int
… …
1898 int pending = w_->pending; 2803 int pending = w_->pending;
1899 2804
1900 if (expect_true (pending)) 2805 if (expect_true (pending))
1901 { 2806 {
1902 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2807 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2808 p->w = (W)&pending_w;
1903 w_->pending = 0; 2809 w_->pending = 0;
1904 p->w = 0;
1905 return p->events; 2810 return p->events;
1906 } 2811 }
1907 else 2812 else
1908 return 0; 2813 return 0;
1909} 2814}
1910 2815
1911void inline_size 2816inline_size void
1912pri_adjust (EV_P_ W w) 2817pri_adjust (EV_P_ W w)
1913{ 2818{
1914 int pri = w->priority; 2819 int pri = ev_priority (w);
1915 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2820 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1916 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2821 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1917 w->priority = pri; 2822 ev_set_priority (w, pri);
1918} 2823}
1919 2824
1920void inline_speed 2825inline_speed void
1921ev_start (EV_P_ W w, int active) 2826ev_start (EV_P_ W w, int active)
1922{ 2827{
1923 pri_adjust (EV_A_ w); 2828 pri_adjust (EV_A_ w);
1924 w->active = active; 2829 w->active = active;
1925 ev_ref (EV_A); 2830 ev_ref (EV_A);
1926} 2831}
1927 2832
1928void inline_size 2833inline_size void
1929ev_stop (EV_P_ W w) 2834ev_stop (EV_P_ W w)
1930{ 2835{
1931 ev_unref (EV_A); 2836 ev_unref (EV_A);
1932 w->active = 0; 2837 w->active = 0;
1933} 2838}
… …
1940 int fd = w->fd; 2845 int fd = w->fd;
1941 2846
1942 if (expect_false (ev_is_active (w))) 2847 if (expect_false (ev_is_active (w)))
1943 return; 2848 return;
1944 2849
1945 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;
1946 2854
1947 ev_start (EV_A_ (W)w, 1); 2855 ev_start (EV_A_ (W)w, 1);
1948 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2856 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1949 wlist_add (&anfds[fd].head, (WL)w); 2857 wlist_add (&anfds[fd].head, (WL)w);
1950 2858
1951 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2859 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
1952 w->events &= ~EV_IOFDSET; 2860 w->events &= ~EV__IOFDSET;
2861
2862 EV_FREQUENT_CHECK;
1953} 2863}
1954 2864
1955void noinline 2865void noinline
1956ev_io_stop (EV_P_ ev_io *w) 2866ev_io_stop (EV_P_ ev_io *w)
1957{ 2867{
1958 clear_pending (EV_A_ (W)w); 2868 clear_pending (EV_A_ (W)w);
1959 if (expect_false (!ev_is_active (w))) 2869 if (expect_false (!ev_is_active (w)))
1960 return; 2870 return;
1961 2871
1962 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;
1963 2875
1964 wlist_del (&anfds[w->fd].head, (WL)w); 2876 wlist_del (&anfds[w->fd].head, (WL)w);
1965 ev_stop (EV_A_ (W)w); 2877 ev_stop (EV_A_ (W)w);
1966 2878
1967 fd_change (EV_A_ w->fd, 1); 2879 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2880
2881 EV_FREQUENT_CHECK;
1968} 2882}
1969 2883
1970void noinline 2884void noinline
1971ev_timer_start (EV_P_ ev_timer *w) 2885ev_timer_start (EV_P_ ev_timer *w)
1972{ 2886{
1973 if (expect_false (ev_is_active (w))) 2887 if (expect_false (ev_is_active (w)))
1974 return; 2888 return;
1975 2889
1976 ev_at (w) += mn_now; 2890 ev_at (w) += mn_now;
1977 2891
1978 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.));
1979 2893
2894 EV_FREQUENT_CHECK;
2895
2896 ++timercnt;
1980 ev_start (EV_A_ (W)w, ++timercnt + HEAP0 - 1); 2897 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1981 array_needsize (WT, timers, timermax, timercnt + HEAP0, EMPTY2); 2898 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1982 timers [ev_active (w)] = (WT)w; 2899 ANHE_w (timers [ev_active (w)]) = (WT)w;
2900 ANHE_at_cache (timers [ev_active (w)]);
1983 upheap (timers, ev_active (w)); 2901 upheap (timers, ev_active (w));
1984 2902
2903 EV_FREQUENT_CHECK;
2904
1985 /*assert (("internal timer heap corruption", timers [ev_active (w)] == w));*/ 2905 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1986} 2906}
1987 2907
1988void noinline 2908void noinline
1989ev_timer_stop (EV_P_ ev_timer *w) 2909ev_timer_stop (EV_P_ ev_timer *w)
1990{ 2910{
1991 clear_pending (EV_A_ (W)w); 2911 clear_pending (EV_A_ (W)w);
1992 if (expect_false (!ev_is_active (w))) 2912 if (expect_false (!ev_is_active (w)))
1993 return; 2913 return;
1994 2914
2915 EV_FREQUENT_CHECK;
2916
1995 { 2917 {
1996 int active = ev_active (w); 2918 int active = ev_active (w);
1997 2919
1998 assert (("internal timer heap corruption", timers [active] == (WT)w)); 2920 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
1999 2921
2922 --timercnt;
2923
2000 if (expect_true (active < timercnt + HEAP0 - 1)) 2924 if (expect_true (active < timercnt + HEAP0))
2001 { 2925 {
2002 timers [active] = timers [timercnt + HEAP0 - 1]; 2926 timers [active] = timers [timercnt + HEAP0];
2003 adjustheap (timers, timercnt, active); 2927 adjustheap (timers, timercnt, active);
2004 } 2928 }
2005
2006 --timercnt;
2007 } 2929 }
2008 2930
2009 ev_at (w) -= mn_now; 2931 ev_at (w) -= mn_now;
2010 2932
2011 ev_stop (EV_A_ (W)w); 2933 ev_stop (EV_A_ (W)w);
2934
2935 EV_FREQUENT_CHECK;
2012} 2936}
2013 2937
2014void noinline 2938void noinline
2015ev_timer_again (EV_P_ ev_timer *w) 2939ev_timer_again (EV_P_ ev_timer *w)
2016{ 2940{
2941 EV_FREQUENT_CHECK;
2942
2017 if (ev_is_active (w)) 2943 if (ev_is_active (w))
2018 { 2944 {
2019 if (w->repeat) 2945 if (w->repeat)
2020 { 2946 {
2021 ev_at (w) = mn_now + w->repeat; 2947 ev_at (w) = mn_now + w->repeat;
2948 ANHE_at_cache (timers [ev_active (w)]);
2022 adjustheap (timers, timercnt, ev_active (w)); 2949 adjustheap (timers, timercnt, ev_active (w));
2023 } 2950 }
2024 else 2951 else
2025 ev_timer_stop (EV_A_ w); 2952 ev_timer_stop (EV_A_ w);
2026 } 2953 }
2027 else if (w->repeat) 2954 else if (w->repeat)
2028 { 2955 {
2029 ev_at (w) = w->repeat; 2956 ev_at (w) = w->repeat;
2030 ev_timer_start (EV_A_ w); 2957 ev_timer_start (EV_A_ w);
2031 } 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.);
2032} 2967}
2033 2968
2034#if EV_PERIODIC_ENABLE 2969#if EV_PERIODIC_ENABLE
2035void noinline 2970void noinline
2036ev_periodic_start (EV_P_ ev_periodic *w) 2971ev_periodic_start (EV_P_ ev_periodic *w)
… …
2040 2975
2041 if (w->reschedule_cb) 2976 if (w->reschedule_cb)
2042 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2977 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2043 else if (w->interval) 2978 else if (w->interval)
2044 { 2979 {
2045 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.));
2046 /* this formula differs from the one in periodic_reify because we do not always round up */ 2981 periodic_recalc (EV_A_ w);
2047 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2048 } 2982 }
2049 else 2983 else
2050 ev_at (w) = w->offset; 2984 ev_at (w) = w->offset;
2051 2985
2986 EV_FREQUENT_CHECK;
2987
2988 ++periodiccnt;
2052 ev_start (EV_A_ (W)w, ++periodiccnt + HEAP0 - 1); 2989 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2053 array_needsize (WT, periodics, periodicmax, periodiccnt + HEAP0, EMPTY2); 2990 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
2054 periodics [ev_active (w)] = (WT)w; 2991 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2992 ANHE_at_cache (periodics [ev_active (w)]);
2055 upheap (periodics, ev_active (w)); 2993 upheap (periodics, ev_active (w));
2056 2994
2995 EV_FREQUENT_CHECK;
2996
2057 /*assert (("internal periodic heap corruption", periodics [ev_active (w)] == w));*/ 2997 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2058} 2998}
2059 2999
2060void noinline 3000void noinline
2061ev_periodic_stop (EV_P_ ev_periodic *w) 3001ev_periodic_stop (EV_P_ ev_periodic *w)
2062{ 3002{
2063 clear_pending (EV_A_ (W)w); 3003 clear_pending (EV_A_ (W)w);
2064 if (expect_false (!ev_is_active (w))) 3004 if (expect_false (!ev_is_active (w)))
2065 return; 3005 return;
2066 3006
3007 EV_FREQUENT_CHECK;
3008
2067 { 3009 {
2068 int active = ev_active (w); 3010 int active = ev_active (w);
2069 3011
2070 assert (("internal periodic heap corruption", periodics [active] == (WT)w)); 3012 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2071 3013
3014 --periodiccnt;
3015
2072 if (expect_true (active < periodiccnt + HEAP0 - 1)) 3016 if (expect_true (active < periodiccnt + HEAP0))
2073 { 3017 {
2074 periodics [active] = periodics [periodiccnt + HEAP0 - 1]; 3018 periodics [active] = periodics [periodiccnt + HEAP0];
2075 adjustheap (periodics, periodiccnt, active); 3019 adjustheap (periodics, periodiccnt, active);
2076 } 3020 }
2077
2078 --periodiccnt;
2079 } 3021 }
2080 3022
2081 ev_stop (EV_A_ (W)w); 3023 ev_stop (EV_A_ (W)w);
3024
3025 EV_FREQUENT_CHECK;
2082} 3026}
2083 3027
2084void noinline 3028void noinline
2085ev_periodic_again (EV_P_ ev_periodic *w) 3029ev_periodic_again (EV_P_ ev_periodic *w)
2086{ 3030{
… …
2092 3036
2093#ifndef SA_RESTART 3037#ifndef SA_RESTART
2094# define SA_RESTART 0 3038# define SA_RESTART 0
2095#endif 3039#endif
2096 3040
3041#if EV_SIGNAL_ENABLE
3042
2097void noinline 3043void noinline
2098ev_signal_start (EV_P_ ev_signal *w) 3044ev_signal_start (EV_P_ ev_signal *w)
2099{ 3045{
2100#if EV_MULTIPLICITY
2101 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2102#endif
2103 if (expect_false (ev_is_active (w))) 3046 if (expect_false (ev_is_active (w)))
2104 return; 3047 return;
2105 3048
2106 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));
2107 3050
2108 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));
2109 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)
2110 { 3062 {
2111#ifndef _WIN32 3063 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2112 sigset_t full, prev; 3064 if (sigfd < 0 && errno == EINVAL)
2113 sigfillset (&full); 3065 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2114 sigprocmask (SIG_SETMASK, &full, &prev);
2115#endif
2116 3066
2117 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 3067 if (sigfd >= 0)
3068 {
3069 fd_intern (sigfd); /* doing it twice will not hurt */
2118 3070
2119#ifndef _WIN32 3071 sigemptyset (&sigfd_set);
2120 sigprocmask (SIG_SETMASK, &prev, 0); 3072
2121#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 }
2122 } 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
2123 3089
2124 ev_start (EV_A_ (W)w, 1); 3090 ev_start (EV_A_ (W)w, 1);
2125 wlist_add (&signals [w->signum - 1].head, (WL)w); 3091 wlist_add (&signals [w->signum - 1].head, (WL)w);
2126 3092
2127 if (!((WL)w)->next) 3093 if (!((WL)w)->next)
3094# if EV_USE_SIGNALFD
3095 if (sigfd < 0) /*TODO*/
3096# endif
2128 { 3097 {
2129#if _WIN32 3098# ifdef _WIN32
3099 evpipe_init (EV_A);
3100
2130 signal (w->signum, ev_sighandler); 3101 signal (w->signum, ev_sighandler);
2131#else 3102# else
2132 struct sigaction sa; 3103 struct sigaction sa;
3104
3105 evpipe_init (EV_A);
3106
2133 sa.sa_handler = ev_sighandler; 3107 sa.sa_handler = ev_sighandler;
2134 sigfillset (&sa.sa_mask); 3108 sigfillset (&sa.sa_mask);
2135 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 */
2136 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 }
2137#endif 3118#endif
2138 } 3119 }
3120
3121 EV_FREQUENT_CHECK;
2139} 3122}
2140 3123
2141void noinline 3124void noinline
2142ev_signal_stop (EV_P_ ev_signal *w) 3125ev_signal_stop (EV_P_ ev_signal *w)
2143{ 3126{
2144 clear_pending (EV_A_ (W)w); 3127 clear_pending (EV_A_ (W)w);
2145 if (expect_false (!ev_is_active (w))) 3128 if (expect_false (!ev_is_active (w)))
2146 return; 3129 return;
2147 3130
3131 EV_FREQUENT_CHECK;
3132
2148 wlist_del (&signals [w->signum - 1].head, (WL)w); 3133 wlist_del (&signals [w->signum - 1].head, (WL)w);
2149 ev_stop (EV_A_ (W)w); 3134 ev_stop (EV_A_ (W)w);
2150 3135
2151 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
2152 signal (w->signum, SIG_DFL); 3155 signal (w->signum, SIG_DFL);
3156 }
3157
3158 EV_FREQUENT_CHECK;
2153} 3159}
3160
3161#endif
3162
3163#if EV_CHILD_ENABLE
2154 3164
2155void 3165void
2156ev_child_start (EV_P_ ev_child *w) 3166ev_child_start (EV_P_ ev_child *w)
2157{ 3167{
2158#if EV_MULTIPLICITY 3168#if EV_MULTIPLICITY
2159 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));
2160#endif 3170#endif
2161 if (expect_false (ev_is_active (w))) 3171 if (expect_false (ev_is_active (w)))
2162 return; 3172 return;
2163 3173
3174 EV_FREQUENT_CHECK;
3175
2164 ev_start (EV_A_ (W)w, 1); 3176 ev_start (EV_A_ (W)w, 1);
2165 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;
2166} 3180}
2167 3181
2168void 3182void
2169ev_child_stop (EV_P_ ev_child *w) 3183ev_child_stop (EV_P_ ev_child *w)
2170{ 3184{
2171 clear_pending (EV_A_ (W)w); 3185 clear_pending (EV_A_ (W)w);
2172 if (expect_false (!ev_is_active (w))) 3186 if (expect_false (!ev_is_active (w)))
2173 return; 3187 return;
2174 3188
3189 EV_FREQUENT_CHECK;
3190
2175 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3191 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2176 ev_stop (EV_A_ (W)w); 3192 ev_stop (EV_A_ (W)w);
3193
3194 EV_FREQUENT_CHECK;
2177} 3195}
3196
3197#endif
2178 3198
2179#if EV_STAT_ENABLE 3199#if EV_STAT_ENABLE
2180 3200
2181# ifdef _WIN32 3201# ifdef _WIN32
2182# undef lstat 3202# undef lstat
2183# define lstat(a,b) _stati64 (a,b) 3203# define lstat(a,b) _stati64 (a,b)
2184# endif 3204# endif
2185 3205
2186#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 */
2187#define MIN_STAT_INTERVAL 0.1074891 3208#define MIN_STAT_INTERVAL 0.1074891
2188 3209
2189static 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);
2190 3211
2191#if EV_USE_INOTIFY 3212#if EV_USE_INOTIFY
2192# 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)
2193 3216
2194static void noinline 3217static void noinline
2195infy_add (EV_P_ ev_stat *w) 3218infy_add (EV_P_ ev_stat *w)
2196{ 3219{
2197 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 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);
2198 3221
2199 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 */
2200 { 3242 }
2201 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;
2202 3247
2203 /* monitor some parent directory for speedup hints */ 3248 /* if path is not there, monitor some parent directory for speedup hints */
2204 /* note that exceeding the hardcoded limit is not a correctness issue, */ 3249 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2205 /* but an efficiency issue only */ 3250 /* but an efficiency issue only */
2206 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3251 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2207 { 3252 {
2208 char path [4096]; 3253 char path [4096];
2209 strcpy (path, w->path); 3254 strcpy (path, w->path);
… …
2213 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 3258 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2214 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 3259 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2215 3260
2216 char *pend = strrchr (path, '/'); 3261 char *pend = strrchr (path, '/');
2217 3262
2218 if (!pend) 3263 if (!pend || pend == path)
2219 break; /* whoops, no '/', complain to your admin */ 3264 break;
2220 3265
2221 *pend = 0; 3266 *pend = 0;
2222 w->wd = inotify_add_watch (fs_fd, path, mask); 3267 w->wd = inotify_add_watch (fs_fd, path, mask);
2223 } 3268 }
2224 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3269 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2225 } 3270 }
2226 } 3271 }
2227 else
2228 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2229 3272
2230 if (w->wd >= 0) 3273 if (w->wd >= 0)
2231 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);
2232} 3280}
2233 3281
2234static void noinline 3282static void noinline
2235infy_del (EV_P_ ev_stat *w) 3283infy_del (EV_P_ ev_stat *w)
2236{ 3284{
… …
2239 3287
2240 if (wd < 0) 3288 if (wd < 0)
2241 return; 3289 return;
2242 3290
2243 w->wd = -2; 3291 w->wd = -2;
2244 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3292 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2245 wlist_del (&fs_hash [slot].head, (WL)w); 3293 wlist_del (&fs_hash [slot].head, (WL)w);
2246 3294
2247 /* remove this watcher, if others are watching it, they will rearm */ 3295 /* remove this watcher, if others are watching it, they will rearm */
2248 inotify_rm_watch (fs_fd, wd); 3296 inotify_rm_watch (fs_fd, wd);
2249} 3297}
2250 3298
2251static void noinline 3299static void noinline
2252infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3300infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2253{ 3301{
2254 if (slot < 0) 3302 if (slot < 0)
2255 /* overflow, need to check for all hahs slots */ 3303 /* overflow, need to check for all hash slots */
2256 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3304 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2257 infy_wd (EV_A_ slot, wd, ev); 3305 infy_wd (EV_A_ slot, wd, ev);
2258 else 3306 else
2259 { 3307 {
2260 WL w_; 3308 WL w_;
2261 3309
2262 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3310 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2263 { 3311 {
2264 ev_stat *w = (ev_stat *)w_; 3312 ev_stat *w = (ev_stat *)w_;
2265 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 */
2266 3314
2267 if (w->wd == wd || wd == -1) 3315 if (w->wd == wd || wd == -1)
2268 { 3316 {
2269 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3317 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2270 { 3318 {
3319 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2271 w->wd = -1; 3320 w->wd = -1;
2272 infy_add (EV_A_ w); /* re-add, no matter what */ 3321 infy_add (EV_A_ w); /* re-add, no matter what */
2273 } 3322 }
2274 3323
2275 stat_timer_cb (EV_A_ &w->timer, 0); 3324 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2280 3329
2281static void 3330static void
2282infy_cb (EV_P_ ev_io *w, int revents) 3331infy_cb (EV_P_ ev_io *w, int revents)
2283{ 3332{
2284 char buf [EV_INOTIFY_BUFSIZE]; 3333 char buf [EV_INOTIFY_BUFSIZE];
2285 struct inotify_event *ev = (struct inotify_event *)buf;
2286 int ofs; 3334 int ofs;
2287 int len = read (fs_fd, buf, sizeof (buf)); 3335 int len = read (fs_fd, buf, sizeof (buf));
2288 3336
2289 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);
2290 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 }
2291} 3343}
2292 3344
2293void 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
2294infy_init (EV_P) 3369infy_init (EV_P)
2295{ 3370{
2296 if (fs_fd != -2) 3371 if (fs_fd != -2)
2297 return; 3372 return;
2298 3373
3374 fs_fd = -1;
3375
3376 ev_check_2625 (EV_A);
3377
2299 fs_fd = inotify_init (); 3378 fs_fd = infy_newfd ();
2300 3379
2301 if (fs_fd >= 0) 3380 if (fs_fd >= 0)
2302 { 3381 {
3382 fd_intern (fs_fd);
2303 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3383 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2304 ev_set_priority (&fs_w, EV_MAXPRI); 3384 ev_set_priority (&fs_w, EV_MAXPRI);
2305 ev_io_start (EV_A_ &fs_w); 3385 ev_io_start (EV_A_ &fs_w);
3386 ev_unref (EV_A);
2306 } 3387 }
2307} 3388}
2308 3389
2309void inline_size 3390inline_size void
2310infy_fork (EV_P) 3391infy_fork (EV_P)
2311{ 3392{
2312 int slot; 3393 int slot;
2313 3394
2314 if (fs_fd < 0) 3395 if (fs_fd < 0)
2315 return; 3396 return;
2316 3397
3398 ev_ref (EV_A);
3399 ev_io_stop (EV_A_ &fs_w);
2317 close (fs_fd); 3400 close (fs_fd);
2318 fs_fd = inotify_init (); 3401 fs_fd = infy_newfd ();
2319 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
2320 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3411 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2321 { 3412 {
2322 WL w_ = fs_hash [slot].head; 3413 WL w_ = fs_hash [slot].head;
2323 fs_hash [slot].head = 0; 3414 fs_hash [slot].head = 0;
2324 3415
2325 while (w_) 3416 while (w_)
… …
2330 w->wd = -1; 3421 w->wd = -1;
2331 3422
2332 if (fs_fd >= 0) 3423 if (fs_fd >= 0)
2333 infy_add (EV_A_ w); /* re-add, no matter what */ 3424 infy_add (EV_A_ w); /* re-add, no matter what */
2334 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);
2335 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 }
2336 } 3432 }
2337
2338 } 3433 }
2339} 3434}
2340 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)
2341#endif 3442#endif
2342 3443
2343void 3444void
2344ev_stat_stat (EV_P_ ev_stat *w) 3445ev_stat_stat (EV_P_ ev_stat *w)
2345{ 3446{
… …
2352static void noinline 3453static void noinline
2353stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3454stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2354{ 3455{
2355 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3456 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2356 3457
2357 /* we copy this here each the time so that */ 3458 ev_statdata prev = w->attr;
2358 /* prev has the old value when the callback gets invoked */
2359 w->prev = w->attr;
2360 ev_stat_stat (EV_A_ w); 3459 ev_stat_stat (EV_A_ w);
2361 3460
2362 /* 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 */
2363 if ( 3462 if (
2364 w->prev.st_dev != w->attr.st_dev 3463 prev.st_dev != w->attr.st_dev
2365 || w->prev.st_ino != w->attr.st_ino 3464 || prev.st_ino != w->attr.st_ino
2366 || w->prev.st_mode != w->attr.st_mode 3465 || prev.st_mode != w->attr.st_mode
2367 || w->prev.st_nlink != w->attr.st_nlink 3466 || prev.st_nlink != w->attr.st_nlink
2368 || w->prev.st_uid != w->attr.st_uid 3467 || prev.st_uid != w->attr.st_uid
2369 || w->prev.st_gid != w->attr.st_gid 3468 || prev.st_gid != w->attr.st_gid
2370 || w->prev.st_rdev != w->attr.st_rdev 3469 || prev.st_rdev != w->attr.st_rdev
2371 || w->prev.st_size != w->attr.st_size 3470 || prev.st_size != w->attr.st_size
2372 || w->prev.st_atime != w->attr.st_atime 3471 || prev.st_atime != w->attr.st_atime
2373 || w->prev.st_mtime != w->attr.st_mtime 3472 || prev.st_mtime != w->attr.st_mtime
2374 || w->prev.st_ctime != w->attr.st_ctime 3473 || prev.st_ctime != w->attr.st_ctime
2375 ) { 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
2376 #if EV_USE_INOTIFY 3480 #if EV_USE_INOTIFY
3481 if (fs_fd >= 0)
3482 {
2377 infy_del (EV_A_ w); 3483 infy_del (EV_A_ w);
2378 infy_add (EV_A_ w); 3484 infy_add (EV_A_ w);
2379 ev_stat_stat (EV_A_ w); /* avoid race... */ 3485 ev_stat_stat (EV_A_ w); /* avoid race... */
3486 }
2380 #endif 3487 #endif
2381 3488
2382 ev_feed_event (EV_A_ w, EV_STAT); 3489 ev_feed_event (EV_A_ w, EV_STAT);
2383 } 3490 }
2384} 3491}
… …
2387ev_stat_start (EV_P_ ev_stat *w) 3494ev_stat_start (EV_P_ ev_stat *w)
2388{ 3495{
2389 if (expect_false (ev_is_active (w))) 3496 if (expect_false (ev_is_active (w)))
2390 return; 3497 return;
2391 3498
2392 /* since we use memcmp, we need to clear any padding data etc. */
2393 memset (&w->prev, 0, sizeof (ev_statdata));
2394 memset (&w->attr, 0, sizeof (ev_statdata));
2395
2396 ev_stat_stat (EV_A_ w); 3499 ev_stat_stat (EV_A_ w);
2397 3500
3501 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2398 if (w->interval < MIN_STAT_INTERVAL) 3502 w->interval = MIN_STAT_INTERVAL;
2399 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2400 3503
2401 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);
2402 ev_set_priority (&w->timer, ev_priority (w)); 3505 ev_set_priority (&w->timer, ev_priority (w));
2403 3506
2404#if EV_USE_INOTIFY 3507#if EV_USE_INOTIFY
2405 infy_init (EV_A); 3508 infy_init (EV_A);
2406 3509
2407 if (fs_fd >= 0) 3510 if (fs_fd >= 0)
2408 infy_add (EV_A_ w); 3511 infy_add (EV_A_ w);
2409 else 3512 else
2410#endif 3513#endif
3514 {
2411 ev_timer_start (EV_A_ &w->timer); 3515 ev_timer_again (EV_A_ &w->timer);
3516 ev_unref (EV_A);
3517 }
2412 3518
2413 ev_start (EV_A_ (W)w, 1); 3519 ev_start (EV_A_ (W)w, 1);
3520
3521 EV_FREQUENT_CHECK;
2414} 3522}
2415 3523
2416void 3524void
2417ev_stat_stop (EV_P_ ev_stat *w) 3525ev_stat_stop (EV_P_ ev_stat *w)
2418{ 3526{
2419 clear_pending (EV_A_ (W)w); 3527 clear_pending (EV_A_ (W)w);
2420 if (expect_false (!ev_is_active (w))) 3528 if (expect_false (!ev_is_active (w)))
2421 return; 3529 return;
2422 3530
3531 EV_FREQUENT_CHECK;
3532
2423#if EV_USE_INOTIFY 3533#if EV_USE_INOTIFY
2424 infy_del (EV_A_ w); 3534 infy_del (EV_A_ w);
2425#endif 3535#endif
3536
3537 if (ev_is_active (&w->timer))
3538 {
3539 ev_ref (EV_A);
2426 ev_timer_stop (EV_A_ &w->timer); 3540 ev_timer_stop (EV_A_ &w->timer);
3541 }
2427 3542
2428 ev_stop (EV_A_ (W)w); 3543 ev_stop (EV_A_ (W)w);
3544
3545 EV_FREQUENT_CHECK;
2429} 3546}
2430#endif 3547#endif
2431 3548
2432#if EV_IDLE_ENABLE 3549#if EV_IDLE_ENABLE
2433void 3550void
… …
2436 if (expect_false (ev_is_active (w))) 3553 if (expect_false (ev_is_active (w)))
2437 return; 3554 return;
2438 3555
2439 pri_adjust (EV_A_ (W)w); 3556 pri_adjust (EV_A_ (W)w);
2440 3557
3558 EV_FREQUENT_CHECK;
3559
2441 { 3560 {
2442 int active = ++idlecnt [ABSPRI (w)]; 3561 int active = ++idlecnt [ABSPRI (w)];
2443 3562
2444 ++idleall; 3563 ++idleall;
2445 ev_start (EV_A_ (W)w, active); 3564 ev_start (EV_A_ (W)w, active);
2446 3565
2447 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);
2448 idles [ABSPRI (w)][active - 1] = w; 3567 idles [ABSPRI (w)][active - 1] = w;
2449 } 3568 }
3569
3570 EV_FREQUENT_CHECK;
2450} 3571}
2451 3572
2452void 3573void
2453ev_idle_stop (EV_P_ ev_idle *w) 3574ev_idle_stop (EV_P_ ev_idle *w)
2454{ 3575{
2455 clear_pending (EV_A_ (W)w); 3576 clear_pending (EV_A_ (W)w);
2456 if (expect_false (!ev_is_active (w))) 3577 if (expect_false (!ev_is_active (w)))
2457 return; 3578 return;
2458 3579
3580 EV_FREQUENT_CHECK;
3581
2459 { 3582 {
2460 int active = ev_active (w); 3583 int active = ev_active (w);
2461 3584
2462 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; 3585 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2463 ev_active (idles [ABSPRI (w)][active - 1]) = active; 3586 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2464 3587
2465 ev_stop (EV_A_ (W)w); 3588 ev_stop (EV_A_ (W)w);
2466 --idleall; 3589 --idleall;
2467 } 3590 }
2468}
2469#endif
2470 3591
3592 EV_FREQUENT_CHECK;
3593}
3594#endif
3595
3596#if EV_PREPARE_ENABLE
2471void 3597void
2472ev_prepare_start (EV_P_ ev_prepare *w) 3598ev_prepare_start (EV_P_ ev_prepare *w)
2473{ 3599{
2474 if (expect_false (ev_is_active (w))) 3600 if (expect_false (ev_is_active (w)))
2475 return; 3601 return;
3602
3603 EV_FREQUENT_CHECK;
2476 3604
2477 ev_start (EV_A_ (W)w, ++preparecnt); 3605 ev_start (EV_A_ (W)w, ++preparecnt);
2478 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 3606 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2479 prepares [preparecnt - 1] = w; 3607 prepares [preparecnt - 1] = w;
3608
3609 EV_FREQUENT_CHECK;
2480} 3610}
2481 3611
2482void 3612void
2483ev_prepare_stop (EV_P_ ev_prepare *w) 3613ev_prepare_stop (EV_P_ ev_prepare *w)
2484{ 3614{
2485 clear_pending (EV_A_ (W)w); 3615 clear_pending (EV_A_ (W)w);
2486 if (expect_false (!ev_is_active (w))) 3616 if (expect_false (!ev_is_active (w)))
2487 return; 3617 return;
2488 3618
3619 EV_FREQUENT_CHECK;
3620
2489 { 3621 {
2490 int active = ev_active (w); 3622 int active = ev_active (w);
2491 3623
2492 prepares [active - 1] = prepares [--preparecnt]; 3624 prepares [active - 1] = prepares [--preparecnt];
2493 ev_active (prepares [active - 1]) = active; 3625 ev_active (prepares [active - 1]) = active;
2494 } 3626 }
2495 3627
2496 ev_stop (EV_A_ (W)w); 3628 ev_stop (EV_A_ (W)w);
2497}
2498 3629
3630 EV_FREQUENT_CHECK;
3631}
3632#endif
3633
3634#if EV_CHECK_ENABLE
2499void 3635void
2500ev_check_start (EV_P_ ev_check *w) 3636ev_check_start (EV_P_ ev_check *w)
2501{ 3637{
2502 if (expect_false (ev_is_active (w))) 3638 if (expect_false (ev_is_active (w)))
2503 return; 3639 return;
3640
3641 EV_FREQUENT_CHECK;
2504 3642
2505 ev_start (EV_A_ (W)w, ++checkcnt); 3643 ev_start (EV_A_ (W)w, ++checkcnt);
2506 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 3644 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2507 checks [checkcnt - 1] = w; 3645 checks [checkcnt - 1] = w;
3646
3647 EV_FREQUENT_CHECK;
2508} 3648}
2509 3649
2510void 3650void
2511ev_check_stop (EV_P_ ev_check *w) 3651ev_check_stop (EV_P_ ev_check *w)
2512{ 3652{
2513 clear_pending (EV_A_ (W)w); 3653 clear_pending (EV_A_ (W)w);
2514 if (expect_false (!ev_is_active (w))) 3654 if (expect_false (!ev_is_active (w)))
2515 return; 3655 return;
2516 3656
3657 EV_FREQUENT_CHECK;
3658
2517 { 3659 {
2518 int active = ev_active (w); 3660 int active = ev_active (w);
2519 3661
2520 checks [active - 1] = checks [--checkcnt]; 3662 checks [active - 1] = checks [--checkcnt];
2521 ev_active (checks [active - 1]) = active; 3663 ev_active (checks [active - 1]) = active;
2522 } 3664 }
2523 3665
2524 ev_stop (EV_A_ (W)w); 3666 ev_stop (EV_A_ (W)w);
3667
3668 EV_FREQUENT_CHECK;
2525} 3669}
3670#endif
2526 3671
2527#if EV_EMBED_ENABLE 3672#if EV_EMBED_ENABLE
2528void noinline 3673void noinline
2529ev_embed_sweep (EV_P_ ev_embed *w) 3674ev_embed_sweep (EV_P_ ev_embed *w)
2530{ 3675{
2531 ev_loop (w->other, EVLOOP_NONBLOCK); 3676 ev_run (w->other, EVRUN_NOWAIT);
2532} 3677}
2533 3678
2534static void 3679static void
2535embed_io_cb (EV_P_ ev_io *io, int revents) 3680embed_io_cb (EV_P_ ev_io *io, int revents)
2536{ 3681{
2537 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3682 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2538 3683
2539 if (ev_cb (w)) 3684 if (ev_cb (w))
2540 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3685 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2541 else 3686 else
2542 ev_loop (w->other, EVLOOP_NONBLOCK); 3687 ev_run (w->other, EVRUN_NOWAIT);
2543} 3688}
2544 3689
2545static void 3690static void
2546embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3691embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2547{ 3692{
2548 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3693 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2549 3694
2550 { 3695 {
2551 struct ev_loop *loop = w->other; 3696 EV_P = w->other;
2552 3697
2553 while (fdchangecnt) 3698 while (fdchangecnt)
2554 { 3699 {
2555 fd_reify (EV_A); 3700 fd_reify (EV_A);
2556 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3701 ev_run (EV_A_ EVRUN_NOWAIT);
2557 } 3702 }
2558 } 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);
2559} 3721}
2560 3722
2561#if 0 3723#if 0
2562static void 3724static void
2563embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3725embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2571{ 3733{
2572 if (expect_false (ev_is_active (w))) 3734 if (expect_false (ev_is_active (w)))
2573 return; 3735 return;
2574 3736
2575 { 3737 {
2576 struct ev_loop *loop = w->other; 3738 EV_P = w->other;
2577 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 ()));
2578 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);
2579 } 3741 }
3742
3743 EV_FREQUENT_CHECK;
2580 3744
2581 ev_set_priority (&w->io, ev_priority (w)); 3745 ev_set_priority (&w->io, ev_priority (w));
2582 ev_io_start (EV_A_ &w->io); 3746 ev_io_start (EV_A_ &w->io);
2583 3747
2584 ev_prepare_init (&w->prepare, embed_prepare_cb); 3748 ev_prepare_init (&w->prepare, embed_prepare_cb);
2585 ev_set_priority (&w->prepare, EV_MINPRI); 3749 ev_set_priority (&w->prepare, EV_MINPRI);
2586 ev_prepare_start (EV_A_ &w->prepare); 3750 ev_prepare_start (EV_A_ &w->prepare);
2587 3751
3752 ev_fork_init (&w->fork, embed_fork_cb);
3753 ev_fork_start (EV_A_ &w->fork);
3754
2588 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 3755 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2589 3756
2590 ev_start (EV_A_ (W)w, 1); 3757 ev_start (EV_A_ (W)w, 1);
3758
3759 EV_FREQUENT_CHECK;
2591} 3760}
2592 3761
2593void 3762void
2594ev_embed_stop (EV_P_ ev_embed *w) 3763ev_embed_stop (EV_P_ ev_embed *w)
2595{ 3764{
2596 clear_pending (EV_A_ (W)w); 3765 clear_pending (EV_A_ (W)w);
2597 if (expect_false (!ev_is_active (w))) 3766 if (expect_false (!ev_is_active (w)))
2598 return; 3767 return;
2599 3768
3769 EV_FREQUENT_CHECK;
3770
2600 ev_io_stop (EV_A_ &w->io); 3771 ev_io_stop (EV_A_ &w->io);
2601 ev_prepare_stop (EV_A_ &w->prepare); 3772 ev_prepare_stop (EV_A_ &w->prepare);
3773 ev_fork_stop (EV_A_ &w->fork);
2602 3774
2603 ev_stop (EV_A_ (W)w); 3775 ev_stop (EV_A_ (W)w);
3776
3777 EV_FREQUENT_CHECK;
2604} 3778}
2605#endif 3779#endif
2606 3780
2607#if EV_FORK_ENABLE 3781#if EV_FORK_ENABLE
2608void 3782void
2609ev_fork_start (EV_P_ ev_fork *w) 3783ev_fork_start (EV_P_ ev_fork *w)
2610{ 3784{
2611 if (expect_false (ev_is_active (w))) 3785 if (expect_false (ev_is_active (w)))
2612 return; 3786 return;
2613 3787
3788 EV_FREQUENT_CHECK;
3789
2614 ev_start (EV_A_ (W)w, ++forkcnt); 3790 ev_start (EV_A_ (W)w, ++forkcnt);
2615 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 3791 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2616 forks [forkcnt - 1] = w; 3792 forks [forkcnt - 1] = w;
3793
3794 EV_FREQUENT_CHECK;
2617} 3795}
2618 3796
2619void 3797void
2620ev_fork_stop (EV_P_ ev_fork *w) 3798ev_fork_stop (EV_P_ ev_fork *w)
2621{ 3799{
2622 clear_pending (EV_A_ (W)w); 3800 clear_pending (EV_A_ (W)w);
2623 if (expect_false (!ev_is_active (w))) 3801 if (expect_false (!ev_is_active (w)))
2624 return; 3802 return;
2625 3803
3804 EV_FREQUENT_CHECK;
3805
2626 { 3806 {
2627 int active = ev_active (w); 3807 int active = ev_active (w);
2628 3808
2629 forks [active - 1] = forks [--forkcnt]; 3809 forks [active - 1] = forks [--forkcnt];
2630 ev_active (forks [active - 1]) = active; 3810 ev_active (forks [active - 1]) = active;
2631 } 3811 }
2632 3812
2633 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;
2634} 3857}
2635#endif 3858#endif
2636 3859
2637#if EV_ASYNC_ENABLE 3860#if EV_ASYNC_ENABLE
2638void 3861void
2639ev_async_start (EV_P_ ev_async *w) 3862ev_async_start (EV_P_ ev_async *w)
2640{ 3863{
2641 if (expect_false (ev_is_active (w))) 3864 if (expect_false (ev_is_active (w)))
2642 return; 3865 return;
2643 3866
3867 w->sent = 0;
3868
2644 evpipe_init (EV_A); 3869 evpipe_init (EV_A);
3870
3871 EV_FREQUENT_CHECK;
2645 3872
2646 ev_start (EV_A_ (W)w, ++asynccnt); 3873 ev_start (EV_A_ (W)w, ++asynccnt);
2647 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 3874 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2648 asyncs [asynccnt - 1] = w; 3875 asyncs [asynccnt - 1] = w;
3876
3877 EV_FREQUENT_CHECK;
2649} 3878}
2650 3879
2651void 3880void
2652ev_async_stop (EV_P_ ev_async *w) 3881ev_async_stop (EV_P_ ev_async *w)
2653{ 3882{
2654 clear_pending (EV_A_ (W)w); 3883 clear_pending (EV_A_ (W)w);
2655 if (expect_false (!ev_is_active (w))) 3884 if (expect_false (!ev_is_active (w)))
2656 return; 3885 return;
2657 3886
3887 EV_FREQUENT_CHECK;
3888
2658 { 3889 {
2659 int active = ev_active (w); 3890 int active = ev_active (w);
2660 3891
2661 asyncs [active - 1] = asyncs [--asynccnt]; 3892 asyncs [active - 1] = asyncs [--asynccnt];
2662 ev_active (asyncs [active - 1]) = active; 3893 ev_active (asyncs [active - 1]) = active;
2663 } 3894 }
2664 3895
2665 ev_stop (EV_A_ (W)w); 3896 ev_stop (EV_A_ (W)w);
3897
3898 EV_FREQUENT_CHECK;
2666} 3899}
2667 3900
2668void 3901void
2669ev_async_send (EV_P_ ev_async *w) 3902ev_async_send (EV_P_ ev_async *w)
2670{ 3903{
2671 w->sent = 1; 3904 w->sent = 1;
2672 evpipe_write (EV_A_ &gotasync); 3905 evpipe_write (EV_A_ &async_pending);
2673} 3906}
2674#endif 3907#endif
2675 3908
2676/*****************************************************************************/ 3909/*****************************************************************************/
2677 3910
… …
2687once_cb (EV_P_ struct ev_once *once, int revents) 3920once_cb (EV_P_ struct ev_once *once, int revents)
2688{ 3921{
2689 void (*cb)(int revents, void *arg) = once->cb; 3922 void (*cb)(int revents, void *arg) = once->cb;
2690 void *arg = once->arg; 3923 void *arg = once->arg;
2691 3924
2692 ev_io_stop (EV_A_ &once->io); 3925 ev_io_stop (EV_A_ &once->io);
2693 ev_timer_stop (EV_A_ &once->to); 3926 ev_timer_stop (EV_A_ &once->to);
2694 ev_free (once); 3927 ev_free (once);
2695 3928
2696 cb (revents, arg); 3929 cb (revents, arg);
2697} 3930}
2698 3931
2699static void 3932static void
2700once_cb_io (EV_P_ ev_io *w, int revents) 3933once_cb_io (EV_P_ ev_io *w, int revents)
2701{ 3934{
2702 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));
2703} 3938}
2704 3939
2705static void 3940static void
2706once_cb_to (EV_P_ ev_timer *w, int revents) 3941once_cb_to (EV_P_ ev_timer *w, int revents)
2707{ 3942{
2708 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));
2709} 3946}
2710 3947
2711void 3948void
2712ev_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)
2713{ 3950{
2714 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));
2715 3952
2716 if (expect_false (!once)) 3953 if (expect_false (!once))
2717 { 3954 {
2718 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3955 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
2719 return; 3956 return;
2720 } 3957 }
2721 3958
2722 once->cb = cb; 3959 once->cb = cb;
2723 once->arg = arg; 3960 once->arg = arg;
… …
2735 ev_timer_set (&once->to, timeout, 0.); 3972 ev_timer_set (&once->to, timeout, 0.);
2736 ev_timer_start (EV_A_ &once->to); 3973 ev_timer_start (EV_A_ &once->to);
2737 } 3974 }
2738} 3975}
2739 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
2740#if EV_MULTIPLICITY 4093#if EV_MULTIPLICITY
2741 #include "ev_wrap.h" 4094 #include "ev_wrap.h"
2742#endif 4095#endif
2743 4096
2744#ifdef __cplusplus 4097EV_CPP(})
2745}
2746#endif
2747 4098

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