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Comparing libev/ev.c (file contents):
Revision 1.297 by root, Fri Jul 10 00:36:21 2009 UTC vs.
Revision 1.410 by root, Sat Feb 4 17:57:55 2012 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
10 * 1. Redistributions of source code must retain the above copyright notice, 10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer. 11 * this list of conditions and the following disclaimer.
12 * 12 *
13 * 2. Redistributions in binary form must reproduce the above copyright 13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the 14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution. 15 * documentation and/or other materials provided with the distribution.
16 * 16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
50# endif 46# endif
47
48#if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
52#endif
51 53
52# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
55# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
77# ifndef EV_USE_REALTIME 79# ifndef EV_USE_REALTIME
78# define EV_USE_REALTIME 0 80# define EV_USE_REALTIME 0
79# endif 81# endif
80# endif 82# endif
81 83
84# if HAVE_NANOSLEEP
82# ifndef EV_USE_NANOSLEEP 85# ifndef EV_USE_NANOSLEEP
83# if HAVE_NANOSLEEP
84# define EV_USE_NANOSLEEP 1 86# define EV_USE_NANOSLEEP EV_FEATURE_OS
87# endif
85# else 88# else
89# undef EV_USE_NANOSLEEP
86# 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
87# endif 96# endif
97# else
98# undef EV_USE_SELECT
99# define EV_USE_SELECT 0
88# endif 100# endif
89 101
102# if HAVE_POLL && HAVE_POLL_H
90# ifndef EV_USE_SELECT 103# ifndef EV_USE_POLL
91# if HAVE_SELECT && HAVE_SYS_SELECT_H 104# define EV_USE_POLL EV_FEATURE_BACKENDS
92# define EV_USE_SELECT 1
93# else
94# define EV_USE_SELECT 0
95# endif 105# endif
96# endif
97
98# ifndef EV_USE_POLL
99# if HAVE_POLL && HAVE_POLL_H
100# define EV_USE_POLL 1
101# else 106# else
107# undef EV_USE_POLL
102# define EV_USE_POLL 0 108# define EV_USE_POLL 0
103# endif
104# endif 109# endif
105 110
106# ifndef EV_USE_EPOLL
107# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 111# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
108# define EV_USE_EPOLL 1 112# ifndef EV_USE_EPOLL
109# else 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
110# define EV_USE_EPOLL 0
111# endif 114# endif
115# else
116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0
112# endif 118# endif
113 119
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
114# ifndef EV_USE_KQUEUE 121# ifndef EV_USE_KQUEUE
115# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
116# define EV_USE_KQUEUE 1
117# else
118# define EV_USE_KQUEUE 0
119# endif 123# endif
124# else
125# undef EV_USE_KQUEUE
126# define EV_USE_KQUEUE 0
120# endif 127# endif
121 128
122# ifndef EV_USE_PORT
123# if HAVE_PORT_H && HAVE_PORT_CREATE 129# if HAVE_PORT_H && HAVE_PORT_CREATE
124# define EV_USE_PORT 1 130# ifndef EV_USE_PORT
125# else 131# define EV_USE_PORT EV_FEATURE_BACKENDS
126# define EV_USE_PORT 0
127# endif 132# endif
133# else
134# undef EV_USE_PORT
135# define EV_USE_PORT 0
128# endif 136# endif
129 137
130# ifndef EV_USE_INOTIFY
131# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 138# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
132# define EV_USE_INOTIFY 1 139# ifndef EV_USE_INOTIFY
133# else
134# define EV_USE_INOTIFY 0 140# define EV_USE_INOTIFY EV_FEATURE_OS
135# endif 141# endif
142# else
143# undef EV_USE_INOTIFY
144# define EV_USE_INOTIFY 0
136# endif 145# endif
137 146
147# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
138# ifndef EV_USE_EVENTFD 148# ifndef EV_USE_SIGNALFD
139# if HAVE_EVENTFD 149# define EV_USE_SIGNALFD EV_FEATURE_OS
140# define EV_USE_EVENTFD 1
141# else
142# define EV_USE_EVENTFD 0
143# endif 150# endif
151# else
152# undef EV_USE_SIGNALFD
153# define EV_USE_SIGNALFD 0
154# endif
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
144# endif 163# endif
145 164
146#endif 165#endif
147 166
148#include <math.h>
149#include <stdlib.h> 167#include <stdlib.h>
168#include <string.h>
150#include <fcntl.h> 169#include <fcntl.h>
151#include <stddef.h> 170#include <stddef.h>
152 171
153#include <stdio.h> 172#include <stdio.h>
154 173
155#include <assert.h> 174#include <assert.h>
156#include <errno.h> 175#include <errno.h>
157#include <sys/types.h> 176#include <sys/types.h>
158#include <time.h> 177#include <time.h>
178#include <limits.h>
159 179
160#include <signal.h> 180#include <signal.h>
161 181
162#ifdef EV_H 182#ifdef EV_H
163# include EV_H 183# include EV_H
164#else 184#else
165# include "ev.h" 185# include "ev.h"
186#endif
187
188#if EV_NO_THREADS
189# undef EV_NO_SMP
190# define EV_NO_SMP 1
191# undef ECB_NO_THREADS
192# define ECB_NO_THREADS 1
193#endif
194#if EV_NO_SMP
195# undef EV_NO_SMP
196# define ECB_NO_SMP 1
166#endif 197#endif
167 198
168#ifndef _WIN32 199#ifndef _WIN32
169# include <sys/time.h> 200# include <sys/time.h>
170# include <sys/wait.h> 201# include <sys/wait.h>
… …
174# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
175# include <windows.h> 206# include <windows.h>
176# ifndef EV_SELECT_IS_WINSOCKET 207# ifndef EV_SELECT_IS_WINSOCKET
177# define EV_SELECT_IS_WINSOCKET 1 208# define EV_SELECT_IS_WINSOCKET 1
178# endif 209# endif
210# undef EV_AVOID_STDIO
179#endif 211#endif
212
213/* OS X, in its infinite idiocy, actually HARDCODES
214 * a limit of 1024 into their select. Where people have brains,
215 * OS X engineers apparently have a vacuum. Or maybe they were
216 * ordered to have a vacuum, or they do anything for money.
217 * This might help. Or not.
218 */
219#define _DARWIN_UNLIMITED_SELECT 1
180 220
181/* this block tries to deduce configuration from header-defined symbols and defaults */ 221/* this block tries to deduce configuration from header-defined symbols and defaults */
222
223/* try to deduce the maximum number of signals on this platform */
224#if defined (EV_NSIG)
225/* use what's provided */
226#elif defined (NSIG)
227# define EV_NSIG (NSIG)
228#elif defined(_NSIG)
229# define EV_NSIG (_NSIG)
230#elif defined (SIGMAX)
231# define EV_NSIG (SIGMAX+1)
232#elif defined (SIG_MAX)
233# define EV_NSIG (SIG_MAX+1)
234#elif defined (_SIG_MAX)
235# define EV_NSIG (_SIG_MAX+1)
236#elif defined (MAXSIG)
237# define EV_NSIG (MAXSIG+1)
238#elif defined (MAX_SIG)
239# define EV_NSIG (MAX_SIG+1)
240#elif defined (SIGARRAYSIZE)
241# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
242#elif defined (_sys_nsig)
243# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
244#else
245# error "unable to find value for NSIG, please report"
246/* to make it compile regardless, just remove the above line, */
247/* but consider reporting it, too! :) */
248# define EV_NSIG 65
249#endif
250
251#ifndef EV_USE_FLOOR
252# define EV_USE_FLOOR 0
253#endif
182 254
183#ifndef EV_USE_CLOCK_SYSCALL 255#ifndef EV_USE_CLOCK_SYSCALL
184# if __linux && __GLIBC__ >= 2 256# if __linux && __GLIBC__ >= 2
185# define EV_USE_CLOCK_SYSCALL 1 257# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
186# else 258# else
187# define EV_USE_CLOCK_SYSCALL 0 259# define EV_USE_CLOCK_SYSCALL 0
188# endif 260# endif
189#endif 261#endif
190 262
191#ifndef EV_USE_MONOTONIC 263#ifndef EV_USE_MONOTONIC
192# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 264# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
193# define EV_USE_MONOTONIC 1 265# define EV_USE_MONOTONIC EV_FEATURE_OS
194# else 266# else
195# define EV_USE_MONOTONIC 0 267# define EV_USE_MONOTONIC 0
196# endif 268# endif
197#endif 269#endif
198 270
… …
200# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 272# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
201#endif 273#endif
202 274
203#ifndef EV_USE_NANOSLEEP 275#ifndef EV_USE_NANOSLEEP
204# if _POSIX_C_SOURCE >= 199309L 276# if _POSIX_C_SOURCE >= 199309L
205# define EV_USE_NANOSLEEP 1 277# define EV_USE_NANOSLEEP EV_FEATURE_OS
206# else 278# else
207# define EV_USE_NANOSLEEP 0 279# define EV_USE_NANOSLEEP 0
208# endif 280# endif
209#endif 281#endif
210 282
211#ifndef EV_USE_SELECT 283#ifndef EV_USE_SELECT
212# define EV_USE_SELECT 1 284# define EV_USE_SELECT EV_FEATURE_BACKENDS
213#endif 285#endif
214 286
215#ifndef EV_USE_POLL 287#ifndef EV_USE_POLL
216# ifdef _WIN32 288# ifdef _WIN32
217# define EV_USE_POLL 0 289# define EV_USE_POLL 0
218# else 290# else
219# define EV_USE_POLL 1 291# define EV_USE_POLL EV_FEATURE_BACKENDS
220# endif 292# endif
221#endif 293#endif
222 294
223#ifndef EV_USE_EPOLL 295#ifndef EV_USE_EPOLL
224# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 296# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
225# define EV_USE_EPOLL 1 297# define EV_USE_EPOLL EV_FEATURE_BACKENDS
226# else 298# else
227# define EV_USE_EPOLL 0 299# define EV_USE_EPOLL 0
228# endif 300# endif
229#endif 301#endif
230 302
… …
236# define EV_USE_PORT 0 308# define EV_USE_PORT 0
237#endif 309#endif
238 310
239#ifndef EV_USE_INOTIFY 311#ifndef EV_USE_INOTIFY
240# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 312# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
241# define EV_USE_INOTIFY 1 313# define EV_USE_INOTIFY EV_FEATURE_OS
242# else 314# else
243# define EV_USE_INOTIFY 0 315# define EV_USE_INOTIFY 0
244# endif 316# endif
245#endif 317#endif
246 318
247#ifndef EV_PID_HASHSIZE 319#ifndef EV_PID_HASHSIZE
248# if EV_MINIMAL 320# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
249# define EV_PID_HASHSIZE 1
250# else
251# define EV_PID_HASHSIZE 16
252# endif
253#endif 321#endif
254 322
255#ifndef EV_INOTIFY_HASHSIZE 323#ifndef EV_INOTIFY_HASHSIZE
256# if EV_MINIMAL 324# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
257# define EV_INOTIFY_HASHSIZE 1
258# else
259# define EV_INOTIFY_HASHSIZE 16
260# endif
261#endif 325#endif
262 326
263#ifndef EV_USE_EVENTFD 327#ifndef EV_USE_EVENTFD
264# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 328# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
265# define EV_USE_EVENTFD 1 329# define EV_USE_EVENTFD EV_FEATURE_OS
266# else 330# else
267# define EV_USE_EVENTFD 0 331# define EV_USE_EVENTFD 0
332# endif
333#endif
334
335#ifndef EV_USE_SIGNALFD
336# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
337# define EV_USE_SIGNALFD EV_FEATURE_OS
338# else
339# define EV_USE_SIGNALFD 0
268# endif 340# endif
269#endif 341#endif
270 342
271#if 0 /* debugging */ 343#if 0 /* debugging */
272# define EV_VERIFY 3 344# define EV_VERIFY 3
273# define EV_USE_4HEAP 1 345# define EV_USE_4HEAP 1
274# define EV_HEAP_CACHE_AT 1 346# define EV_HEAP_CACHE_AT 1
275#endif 347#endif
276 348
277#ifndef EV_VERIFY 349#ifndef EV_VERIFY
278# define EV_VERIFY !EV_MINIMAL 350# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
279#endif 351#endif
280 352
281#ifndef EV_USE_4HEAP 353#ifndef EV_USE_4HEAP
282# define EV_USE_4HEAP !EV_MINIMAL 354# define EV_USE_4HEAP EV_FEATURE_DATA
283#endif 355#endif
284 356
285#ifndef EV_HEAP_CACHE_AT 357#ifndef EV_HEAP_CACHE_AT
286# define EV_HEAP_CACHE_AT !EV_MINIMAL 358# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
287#endif 359#endif
288 360
289/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 361/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
290/* which makes programs even slower. might work on other unices, too. */ 362/* which makes programs even slower. might work on other unices, too. */
291#if EV_USE_CLOCK_SYSCALL 363#if EV_USE_CLOCK_SYSCALL
… …
300# endif 372# endif
301#endif 373#endif
302 374
303/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 375/* this block fixes any misconfiguration where we know we run into trouble otherwise */
304 376
377#ifdef _AIX
378/* AIX has a completely broken poll.h header */
379# undef EV_USE_POLL
380# define EV_USE_POLL 0
381#endif
382
305#ifndef CLOCK_MONOTONIC 383#ifndef CLOCK_MONOTONIC
306# undef EV_USE_MONOTONIC 384# undef EV_USE_MONOTONIC
307# define EV_USE_MONOTONIC 0 385# define EV_USE_MONOTONIC 0
308#endif 386#endif
309 387
… …
316# undef EV_USE_INOTIFY 394# undef EV_USE_INOTIFY
317# define EV_USE_INOTIFY 0 395# define EV_USE_INOTIFY 0
318#endif 396#endif
319 397
320#if !EV_USE_NANOSLEEP 398#if !EV_USE_NANOSLEEP
321# ifndef _WIN32 399/* hp-ux has it in sys/time.h, which we unconditionally include above */
400# if !defined(_WIN32) && !defined(__hpux)
322# include <sys/select.h> 401# include <sys/select.h>
323# endif 402# endif
324#endif 403#endif
325 404
326#if EV_USE_INOTIFY 405#if EV_USE_INOTIFY
327# include <sys/utsname.h>
328# include <sys/statfs.h> 406# include <sys/statfs.h>
329# include <sys/inotify.h> 407# include <sys/inotify.h>
330/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 408/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
331# ifndef IN_DONT_FOLLOW 409# ifndef IN_DONT_FOLLOW
332# undef EV_USE_INOTIFY 410# undef EV_USE_INOTIFY
… …
339#endif 417#endif
340 418
341#if EV_USE_EVENTFD 419#if EV_USE_EVENTFD
342/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 420/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
343# include <stdint.h> 421# include <stdint.h>
344# ifdef __cplusplus 422# ifndef EFD_NONBLOCK
345extern "C" { 423# define EFD_NONBLOCK O_NONBLOCK
346# endif 424# endif
347int eventfd (unsigned int initval, int flags); 425# ifndef EFD_CLOEXEC
348# ifdef __cplusplus 426# ifdef O_CLOEXEC
349} 427# define EFD_CLOEXEC O_CLOEXEC
428# else
429# define EFD_CLOEXEC 02000000
430# endif
350# endif 431# endif
432EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
433#endif
434
435#if EV_USE_SIGNALFD
436/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
437# include <stdint.h>
438# ifndef SFD_NONBLOCK
439# define SFD_NONBLOCK O_NONBLOCK
440# endif
441# ifndef SFD_CLOEXEC
442# ifdef O_CLOEXEC
443# define SFD_CLOEXEC O_CLOEXEC
444# else
445# define SFD_CLOEXEC 02000000
446# endif
447# endif
448EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
449
450struct signalfd_siginfo
451{
452 uint32_t ssi_signo;
453 char pad[128 - sizeof (uint32_t)];
454};
351#endif 455#endif
352 456
353/**/ 457/**/
354 458
355#if EV_VERIFY >= 3 459#if EV_VERIFY >= 3
356# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 460# define EV_FREQUENT_CHECK ev_verify (EV_A)
357#else 461#else
358# define EV_FREQUENT_CHECK do { } while (0) 462# define EV_FREQUENT_CHECK do { } while (0)
359#endif 463#endif
360 464
361/* 465/*
362 * This is used to avoid floating point rounding problems. 466 * This is used to work around floating point rounding problems.
363 * It is added to ev_rt_now when scheduling periodics
364 * to ensure progress, time-wise, even when rounding
365 * errors are against us.
366 * This value is good at least till the year 4000. 467 * This value is good at least till the year 4000.
367 * Better solutions welcome.
368 */ 468 */
369#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 469#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
470/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
370 471
371#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 472#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
372#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 473#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
373/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
374 474
475#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
476#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
477
478/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
479/* ECB.H BEGIN */
480/*
481 * libecb - http://software.schmorp.de/pkg/libecb
482 *
483 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de>
484 * Copyright (©) 2011 Emanuele Giaquinta
485 * All rights reserved.
486 *
487 * Redistribution and use in source and binary forms, with or without modifica-
488 * tion, are permitted provided that the following conditions are met:
489 *
490 * 1. Redistributions of source code must retain the above copyright notice,
491 * this list of conditions and the following disclaimer.
492 *
493 * 2. Redistributions in binary form must reproduce the above copyright
494 * notice, this list of conditions and the following disclaimer in the
495 * documentation and/or other materials provided with the distribution.
496 *
497 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
498 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
499 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
500 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
501 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
502 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
503 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
504 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
505 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
506 * OF THE POSSIBILITY OF SUCH DAMAGE.
507 */
508
509#ifndef ECB_H
510#define ECB_H
511
512#ifdef _WIN32
513 typedef signed char int8_t;
514 typedef unsigned char uint8_t;
515 typedef signed short int16_t;
516 typedef unsigned short uint16_t;
517 typedef signed int int32_t;
518 typedef unsigned int uint32_t;
375#if __GNUC__ >= 4 519 #if __GNUC__
376# define expect(expr,value) __builtin_expect ((expr),(value)) 520 typedef signed long long int64_t;
377# define noinline __attribute__ ((noinline)) 521 typedef unsigned long long uint64_t;
522 #else /* _MSC_VER || __BORLANDC__ */
523 typedef signed __int64 int64_t;
524 typedef unsigned __int64 uint64_t;
525 #endif
378#else 526#else
379# define expect(expr,value) (expr) 527 #include <inttypes.h>
380# define noinline
381# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
382# define inline
383# endif 528#endif
529
530/* many compilers define _GNUC_ to some versions but then only implement
531 * what their idiot authors think are the "more important" extensions,
532 * causing enormous grief in return for some better fake benchmark numbers.
533 * or so.
534 * we try to detect these and simply assume they are not gcc - if they have
535 * an issue with that they should have done it right in the first place.
536 */
537#ifndef ECB_GCC_VERSION
538 #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__)
539 #define ECB_GCC_VERSION(major,minor) 0
540 #else
541 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
384#endif 542 #endif
543#endif
385 544
545/*****************************************************************************/
546
547/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
548/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
549
550#if ECB_NO_THREADS
551# define ECB_NO_SMP 1
552#endif
553
554#if ECB_NO_THREADS || ECB_NO_SMP
555 #define ECB_MEMORY_FENCE do { } while (0)
556#endif
557
558#ifndef ECB_MEMORY_FENCE
559 #if ECB_GCC_VERSION(2,5) || defined(__INTEL_COMPILER) || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
560 #if __i386 || __i386__
561 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
562 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */
563 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */
564 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
565 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
566 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
567 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */
568 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
569 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
570 #elif defined(__ARM_ARCH_6__ ) || defined(__ARM_ARCH_6J__ ) \
571 || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6ZK__)
572 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
573 #elif defined(__ARM_ARCH_7__ ) || defined(__ARM_ARCH_7A__ ) \
574 || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7R__ )
575 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
576 #elif __sparc || __sparc__
577 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad | " : : : "memory")
578 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
579 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
580 #elif defined(__s390__) || defined(__s390x__)
581 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
582 #endif
583 #endif
584#endif
585
586#ifndef ECB_MEMORY_FENCE
587 #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER) || defined(__clang__)
588 #define ECB_MEMORY_FENCE __sync_synchronize ()
589 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */
590 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */
591 #elif _MSC_VER >= 1400 /* VC++ 2005 */
592 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
593 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
594 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
595 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
596 #elif defined(_WIN32)
597 #include <WinNT.h>
598 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
599 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
600 #include <mbarrier.h>
601 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
602 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
603 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
604 #endif
605#endif
606
607#ifndef ECB_MEMORY_FENCE
608 #if !ECB_AVOID_PTHREADS
609 /*
610 * if you get undefined symbol references to pthread_mutex_lock,
611 * or failure to find pthread.h, then you should implement
612 * the ECB_MEMORY_FENCE operations for your cpu/compiler
613 * OR provide pthread.h and link against the posix thread library
614 * of your system.
615 */
616 #include <pthread.h>
617 #define ECB_NEEDS_PTHREADS 1
618 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
619
620 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
621 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
622 #endif
623#endif
624
625#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE)
626 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
627#endif
628
629#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE)
630 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
631#endif
632
633/*****************************************************************************/
634
635#define ECB_C99 (__STDC_VERSION__ >= 199901L)
636
637#if __cplusplus
638 #define ecb_inline static inline
639#elif ECB_GCC_VERSION(2,5)
640 #define ecb_inline static __inline__
641#elif ECB_C99
642 #define ecb_inline static inline
643#else
644 #define ecb_inline static
645#endif
646
647#if ECB_GCC_VERSION(3,3)
648 #define ecb_restrict __restrict__
649#elif ECB_C99
650 #define ecb_restrict restrict
651#else
652 #define ecb_restrict
653#endif
654
655typedef int ecb_bool;
656
657#define ECB_CONCAT_(a, b) a ## b
658#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
659#define ECB_STRINGIFY_(a) # a
660#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
661
662#define ecb_function_ ecb_inline
663
664#if ECB_GCC_VERSION(3,1)
665 #define ecb_attribute(attrlist) __attribute__(attrlist)
666 #define ecb_is_constant(expr) __builtin_constant_p (expr)
667 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
668 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
669#else
670 #define ecb_attribute(attrlist)
671 #define ecb_is_constant(expr) 0
672 #define ecb_expect(expr,value) (expr)
673 #define ecb_prefetch(addr,rw,locality)
674#endif
675
676/* no emulation for ecb_decltype */
677#if ECB_GCC_VERSION(4,5)
678 #define ecb_decltype(x) __decltype(x)
679#elif ECB_GCC_VERSION(3,0)
680 #define ecb_decltype(x) __typeof(x)
681#endif
682
683#define ecb_noinline ecb_attribute ((__noinline__))
684#define ecb_noreturn ecb_attribute ((__noreturn__))
685#define ecb_unused ecb_attribute ((__unused__))
686#define ecb_const ecb_attribute ((__const__))
687#define ecb_pure ecb_attribute ((__pure__))
688
689#if ECB_GCC_VERSION(4,3)
690 #define ecb_artificial ecb_attribute ((__artificial__))
691 #define ecb_hot ecb_attribute ((__hot__))
692 #define ecb_cold ecb_attribute ((__cold__))
693#else
694 #define ecb_artificial
695 #define ecb_hot
696 #define ecb_cold
697#endif
698
699/* put around conditional expressions if you are very sure that the */
700/* expression is mostly true or mostly false. note that these return */
701/* booleans, not the expression. */
386#define expect_false(expr) expect ((expr) != 0, 0) 702#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
387#define expect_true(expr) expect ((expr) != 0, 1) 703#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
704/* for compatibility to the rest of the world */
705#define ecb_likely(expr) ecb_expect_true (expr)
706#define ecb_unlikely(expr) ecb_expect_false (expr)
707
708/* count trailing zero bits and count # of one bits */
709#if ECB_GCC_VERSION(3,4)
710 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
711 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
712 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
713 #define ecb_ctz32(x) __builtin_ctz (x)
714 #define ecb_ctz64(x) __builtin_ctzll (x)
715 #define ecb_popcount32(x) __builtin_popcount (x)
716 /* no popcountll */
717#else
718 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
719 ecb_function_ int
720 ecb_ctz32 (uint32_t x)
721 {
722 int r = 0;
723
724 x &= ~x + 1; /* this isolates the lowest bit */
725
726#if ECB_branchless_on_i386
727 r += !!(x & 0xaaaaaaaa) << 0;
728 r += !!(x & 0xcccccccc) << 1;
729 r += !!(x & 0xf0f0f0f0) << 2;
730 r += !!(x & 0xff00ff00) << 3;
731 r += !!(x & 0xffff0000) << 4;
732#else
733 if (x & 0xaaaaaaaa) r += 1;
734 if (x & 0xcccccccc) r += 2;
735 if (x & 0xf0f0f0f0) r += 4;
736 if (x & 0xff00ff00) r += 8;
737 if (x & 0xffff0000) r += 16;
738#endif
739
740 return r;
741 }
742
743 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
744 ecb_function_ int
745 ecb_ctz64 (uint64_t x)
746 {
747 int shift = x & 0xffffffffU ? 0 : 32;
748 return ecb_ctz32 (x >> shift) + shift;
749 }
750
751 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
752 ecb_function_ int
753 ecb_popcount32 (uint32_t x)
754 {
755 x -= (x >> 1) & 0x55555555;
756 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
757 x = ((x >> 4) + x) & 0x0f0f0f0f;
758 x *= 0x01010101;
759
760 return x >> 24;
761 }
762
763 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
764 ecb_function_ int ecb_ld32 (uint32_t x)
765 {
766 int r = 0;
767
768 if (x >> 16) { x >>= 16; r += 16; }
769 if (x >> 8) { x >>= 8; r += 8; }
770 if (x >> 4) { x >>= 4; r += 4; }
771 if (x >> 2) { x >>= 2; r += 2; }
772 if (x >> 1) { r += 1; }
773
774 return r;
775 }
776
777 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
778 ecb_function_ int ecb_ld64 (uint64_t x)
779 {
780 int r = 0;
781
782 if (x >> 32) { x >>= 32; r += 32; }
783
784 return r + ecb_ld32 (x);
785 }
786#endif
787
788ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
789ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
790{
791 return ( (x * 0x0802U & 0x22110U)
792 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
793}
794
795ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
796ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
797{
798 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
799 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
800 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
801 x = ( x >> 8 ) | ( x << 8);
802
803 return x;
804}
805
806ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
807ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
808{
809 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
810 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
811 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
812 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
813 x = ( x >> 16 ) | ( x << 16);
814
815 return x;
816}
817
818/* popcount64 is only available on 64 bit cpus as gcc builtin */
819/* so for this version we are lazy */
820ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
821ecb_function_ int
822ecb_popcount64 (uint64_t x)
823{
824 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
825}
826
827ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
828ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
829ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
830ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
831ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
832ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
833ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
834ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
835
836ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
837ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
838ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
839ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
840ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
841ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
842ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
843ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
844
845#if ECB_GCC_VERSION(4,3)
846 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
847 #define ecb_bswap32(x) __builtin_bswap32 (x)
848 #define ecb_bswap64(x) __builtin_bswap64 (x)
849#else
850 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
851 ecb_function_ uint16_t
852 ecb_bswap16 (uint16_t x)
853 {
854 return ecb_rotl16 (x, 8);
855 }
856
857 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
858 ecb_function_ uint32_t
859 ecb_bswap32 (uint32_t x)
860 {
861 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
862 }
863
864 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
865 ecb_function_ uint64_t
866 ecb_bswap64 (uint64_t x)
867 {
868 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
869 }
870#endif
871
872#if ECB_GCC_VERSION(4,5)
873 #define ecb_unreachable() __builtin_unreachable ()
874#else
875 /* this seems to work fine, but gcc always emits a warning for it :/ */
876 ecb_inline void ecb_unreachable (void) ecb_noreturn;
877 ecb_inline void ecb_unreachable (void) { }
878#endif
879
880/* try to tell the compiler that some condition is definitely true */
881#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
882
883ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
884ecb_inline unsigned char
885ecb_byteorder_helper (void)
886{
887 const uint32_t u = 0x11223344;
888 return *(unsigned char *)&u;
889}
890
891ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
892ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
893ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
894ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
895
896#if ECB_GCC_VERSION(3,0) || ECB_C99
897 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
898#else
899 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
900#endif
901
902#if __cplusplus
903 template<typename T>
904 static inline T ecb_div_rd (T val, T div)
905 {
906 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
907 }
908 template<typename T>
909 static inline T ecb_div_ru (T val, T div)
910 {
911 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
912 }
913#else
914 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
915 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
916#endif
917
918#if ecb_cplusplus_does_not_suck
919 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
920 template<typename T, int N>
921 static inline int ecb_array_length (const T (&arr)[N])
922 {
923 return N;
924 }
925#else
926 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
927#endif
928
929#endif
930
931/* ECB.H END */
932
933#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
934/* if your architecture doesn't need memory fences, e.g. because it is
935 * single-cpu/core, or if you use libev in a project that doesn't use libev
936 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
937 * libev, in which cases the memory fences become nops.
938 * alternatively, you can remove this #error and link against libpthread,
939 * which will then provide the memory fences.
940 */
941# error "memory fences not defined for your architecture, please report"
942#endif
943
944#ifndef ECB_MEMORY_FENCE
945# define ECB_MEMORY_FENCE do { } while (0)
946# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
947# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
948#endif
949
950#define expect_false(cond) ecb_expect_false (cond)
951#define expect_true(cond) ecb_expect_true (cond)
952#define noinline ecb_noinline
953
388#define inline_size static inline 954#define inline_size ecb_inline
389 955
390#if EV_MINIMAL 956#if EV_FEATURE_CODE
957# define inline_speed ecb_inline
958#else
391# define inline_speed static noinline 959# define inline_speed static noinline
392#else
393# define inline_speed static inline
394#endif 960#endif
395 961
396#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 962#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
397 963
398#if EV_MINPRI == EV_MAXPRI 964#if EV_MINPRI == EV_MAXPRI
… …
411#define ev_active(w) ((W)(w))->active 977#define ev_active(w) ((W)(w))->active
412#define ev_at(w) ((WT)(w))->at 978#define ev_at(w) ((WT)(w))->at
413 979
414#if EV_USE_REALTIME 980#if EV_USE_REALTIME
415/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 981/* sig_atomic_t is used to avoid per-thread variables or locking but still */
416/* giving it a reasonably high chance of working on typical architetcures */ 982/* giving it a reasonably high chance of working on typical architectures */
417static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 983static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
418#endif 984#endif
419 985
420#if EV_USE_MONOTONIC 986#if EV_USE_MONOTONIC
421static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 987static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
422#endif 988#endif
423 989
990#ifndef EV_FD_TO_WIN32_HANDLE
991# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
992#endif
993#ifndef EV_WIN32_HANDLE_TO_FD
994# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
995#endif
996#ifndef EV_WIN32_CLOSE_FD
997# define EV_WIN32_CLOSE_FD(fd) close (fd)
998#endif
999
424#ifdef _WIN32 1000#ifdef _WIN32
425# include "ev_win32.c" 1001# include "ev_win32.c"
426#endif 1002#endif
427 1003
428/*****************************************************************************/ 1004/*****************************************************************************/
429 1005
1006/* define a suitable floor function (only used by periodics atm) */
1007
1008#if EV_USE_FLOOR
1009# include <math.h>
1010# define ev_floor(v) floor (v)
1011#else
1012
1013#include <float.h>
1014
1015/* a floor() replacement function, should be independent of ev_tstamp type */
1016static ev_tstamp noinline
1017ev_floor (ev_tstamp v)
1018{
1019 /* the choice of shift factor is not terribly important */
1020#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1021 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1022#else
1023 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1024#endif
1025
1026 /* argument too large for an unsigned long? */
1027 if (expect_false (v >= shift))
1028 {
1029 ev_tstamp f;
1030
1031 if (v == v - 1.)
1032 return v; /* very large number */
1033
1034 f = shift * ev_floor (v * (1. / shift));
1035 return f + ev_floor (v - f);
1036 }
1037
1038 /* special treatment for negative args? */
1039 if (expect_false (v < 0.))
1040 {
1041 ev_tstamp f = -ev_floor (-v);
1042
1043 return f - (f == v ? 0 : 1);
1044 }
1045
1046 /* fits into an unsigned long */
1047 return (unsigned long)v;
1048}
1049
1050#endif
1051
1052/*****************************************************************************/
1053
1054#ifdef __linux
1055# include <sys/utsname.h>
1056#endif
1057
1058static unsigned int noinline ecb_cold
1059ev_linux_version (void)
1060{
1061#ifdef __linux
1062 unsigned int v = 0;
1063 struct utsname buf;
1064 int i;
1065 char *p = buf.release;
1066
1067 if (uname (&buf))
1068 return 0;
1069
1070 for (i = 3+1; --i; )
1071 {
1072 unsigned int c = 0;
1073
1074 for (;;)
1075 {
1076 if (*p >= '0' && *p <= '9')
1077 c = c * 10 + *p++ - '0';
1078 else
1079 {
1080 p += *p == '.';
1081 break;
1082 }
1083 }
1084
1085 v = (v << 8) | c;
1086 }
1087
1088 return v;
1089#else
1090 return 0;
1091#endif
1092}
1093
1094/*****************************************************************************/
1095
1096#if EV_AVOID_STDIO
1097static void noinline ecb_cold
1098ev_printerr (const char *msg)
1099{
1100 write (STDERR_FILENO, msg, strlen (msg));
1101}
1102#endif
1103
430static void (*syserr_cb)(const char *msg); 1104static void (*syserr_cb)(const char *msg);
431 1105
432void 1106void ecb_cold
433ev_set_syserr_cb (void (*cb)(const char *msg)) 1107ev_set_syserr_cb (void (*cb)(const char *msg))
434{ 1108{
435 syserr_cb = cb; 1109 syserr_cb = cb;
436} 1110}
437 1111
438static void noinline 1112static void noinline ecb_cold
439ev_syserr (const char *msg) 1113ev_syserr (const char *msg)
440{ 1114{
441 if (!msg) 1115 if (!msg)
442 msg = "(libev) system error"; 1116 msg = "(libev) system error";
443 1117
444 if (syserr_cb) 1118 if (syserr_cb)
445 syserr_cb (msg); 1119 syserr_cb (msg);
446 else 1120 else
447 { 1121 {
1122#if EV_AVOID_STDIO
1123 ev_printerr (msg);
1124 ev_printerr (": ");
1125 ev_printerr (strerror (errno));
1126 ev_printerr ("\n");
1127#else
448 perror (msg); 1128 perror (msg);
1129#endif
449 abort (); 1130 abort ();
450 } 1131 }
451} 1132}
452 1133
453static void * 1134static void *
454ev_realloc_emul (void *ptr, long size) 1135ev_realloc_emul (void *ptr, long size)
455{ 1136{
1137#if __GLIBC__
1138 return realloc (ptr, size);
1139#else
456 /* some systems, notably openbsd and darwin, fail to properly 1140 /* some systems, notably openbsd and darwin, fail to properly
457 * implement realloc (x, 0) (as required by both ansi c-98 and 1141 * implement realloc (x, 0) (as required by both ansi c-89 and
458 * the single unix specification, so work around them here. 1142 * the single unix specification, so work around them here.
459 */ 1143 */
460 1144
461 if (size) 1145 if (size)
462 return realloc (ptr, size); 1146 return realloc (ptr, size);
463 1147
464 free (ptr); 1148 free (ptr);
465 return 0; 1149 return 0;
1150#endif
466} 1151}
467 1152
468static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1153static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
469 1154
470void 1155void ecb_cold
471ev_set_allocator (void *(*cb)(void *ptr, long size)) 1156ev_set_allocator (void *(*cb)(void *ptr, long size))
472{ 1157{
473 alloc = cb; 1158 alloc = cb;
474} 1159}
475 1160
… …
478{ 1163{
479 ptr = alloc (ptr, size); 1164 ptr = alloc (ptr, size);
480 1165
481 if (!ptr && size) 1166 if (!ptr && size)
482 { 1167 {
1168#if EV_AVOID_STDIO
1169 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1170#else
483 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1171 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1172#endif
484 abort (); 1173 abort ();
485 } 1174 }
486 1175
487 return ptr; 1176 return ptr;
488} 1177}
… …
490#define ev_malloc(size) ev_realloc (0, (size)) 1179#define ev_malloc(size) ev_realloc (0, (size))
491#define ev_free(ptr) ev_realloc ((ptr), 0) 1180#define ev_free(ptr) ev_realloc ((ptr), 0)
492 1181
493/*****************************************************************************/ 1182/*****************************************************************************/
494 1183
1184/* set in reify when reification needed */
1185#define EV_ANFD_REIFY 1
1186
495/* file descriptor info structure */ 1187/* file descriptor info structure */
496typedef struct 1188typedef struct
497{ 1189{
498 WL head; 1190 WL head;
499 unsigned char events; /* the events watched for */ 1191 unsigned char events; /* the events watched for */
500 unsigned char reify; /* flag set when this ANFD needs reification */ 1192 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
501 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1193 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
502 unsigned char unused; 1194 unsigned char unused;
503#if EV_USE_EPOLL 1195#if EV_USE_EPOLL
504 unsigned int egen; /* generation counter to counter epoll bugs */ 1196 unsigned int egen; /* generation counter to counter epoll bugs */
505#endif 1197#endif
506#if EV_SELECT_IS_WINSOCKET 1198#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
507 SOCKET handle; 1199 SOCKET handle;
1200#endif
1201#if EV_USE_IOCP
1202 OVERLAPPED or, ow;
508#endif 1203#endif
509} ANFD; 1204} ANFD;
510 1205
511/* stores the pending event set for a given watcher */ 1206/* stores the pending event set for a given watcher */
512typedef struct 1207typedef struct
… …
554 #undef VAR 1249 #undef VAR
555 }; 1250 };
556 #include "ev_wrap.h" 1251 #include "ev_wrap.h"
557 1252
558 static struct ev_loop default_loop_struct; 1253 static struct ev_loop default_loop_struct;
559 struct ev_loop *ev_default_loop_ptr; 1254 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
560 1255
561#else 1256#else
562 1257
563 ev_tstamp ev_rt_now; 1258 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
564 #define VAR(name,decl) static decl; 1259 #define VAR(name,decl) static decl;
565 #include "ev_vars.h" 1260 #include "ev_vars.h"
566 #undef VAR 1261 #undef VAR
567 1262
568 static int ev_default_loop_ptr; 1263 static int ev_default_loop_ptr;
569 1264
570#endif 1265#endif
571 1266
572#if EV_MINIMAL < 2 1267#if EV_FEATURE_API
573# define EV_SUSPEND_CB if (expect_false (suspend_cb)) suspend_cb (EV_A)
574# define EV_RESUME_CB if (expect_false (resume_cb )) resume_cb (EV_A) 1268# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
1269# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
575# define EV_INVOKE_PENDING invoke_cb (EV_A) 1270# define EV_INVOKE_PENDING invoke_cb (EV_A)
576#else 1271#else
577# define EV_SUSPEND_CB (void)0
578# define EV_RESUME_CB (void)0 1272# define EV_RELEASE_CB (void)0
1273# define EV_ACQUIRE_CB (void)0
579# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1274# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
580#endif 1275#endif
1276
1277#define EVBREAK_RECURSE 0x80
581 1278
582/*****************************************************************************/ 1279/*****************************************************************************/
583 1280
584#ifndef EV_HAVE_EV_TIME 1281#ifndef EV_HAVE_EV_TIME
585ev_tstamp 1282ev_tstamp
… …
629 if (delay > 0.) 1326 if (delay > 0.)
630 { 1327 {
631#if EV_USE_NANOSLEEP 1328#if EV_USE_NANOSLEEP
632 struct timespec ts; 1329 struct timespec ts;
633 1330
634 ts.tv_sec = (time_t)delay; 1331 EV_TS_SET (ts, delay);
635 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
636
637 nanosleep (&ts, 0); 1332 nanosleep (&ts, 0);
638#elif defined(_WIN32) 1333#elif defined(_WIN32)
639 Sleep ((unsigned long)(delay * 1e3)); 1334 Sleep ((unsigned long)(delay * 1e3));
640#else 1335#else
641 struct timeval tv; 1336 struct timeval tv;
642 1337
643 tv.tv_sec = (time_t)delay;
644 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
645
646 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1338 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
647 /* somehting not guaranteed by newer posix versions, but guaranteed */ 1339 /* something not guaranteed by newer posix versions, but guaranteed */
648 /* by older ones */ 1340 /* by older ones */
1341 EV_TV_SET (tv, delay);
649 select (0, 0, 0, 0, &tv); 1342 select (0, 0, 0, 0, &tv);
650#endif 1343#endif
651 } 1344 }
652} 1345}
653 1346
654/*****************************************************************************/ 1347/*****************************************************************************/
655 1348
656#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1349#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
657 1350
658/* find a suitable new size for the given array, */ 1351/* find a suitable new size for the given array, */
659/* hopefully by rounding to a ncie-to-malloc size */ 1352/* hopefully by rounding to a nice-to-malloc size */
660inline_size int 1353inline_size int
661array_nextsize (int elem, int cur, int cnt) 1354array_nextsize (int elem, int cur, int cnt)
662{ 1355{
663 int ncur = cur + 1; 1356 int ncur = cur + 1;
664 1357
665 do 1358 do
666 ncur <<= 1; 1359 ncur <<= 1;
667 while (cnt > ncur); 1360 while (cnt > ncur);
668 1361
669 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1362 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
670 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1363 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
671 { 1364 {
672 ncur *= elem; 1365 ncur *= elem;
673 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1366 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
674 ncur = ncur - sizeof (void *) * 4; 1367 ncur = ncur - sizeof (void *) * 4;
… …
676 } 1369 }
677 1370
678 return ncur; 1371 return ncur;
679} 1372}
680 1373
681static noinline void * 1374static void * noinline ecb_cold
682array_realloc (int elem, void *base, int *cur, int cnt) 1375array_realloc (int elem, void *base, int *cur, int cnt)
683{ 1376{
684 *cur = array_nextsize (elem, *cur, cnt); 1377 *cur = array_nextsize (elem, *cur, cnt);
685 return ev_realloc (base, elem * *cur); 1378 return ev_realloc (base, elem * *cur);
686} 1379}
… …
689 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1382 memset ((void *)(base), 0, sizeof (*(base)) * (count))
690 1383
691#define array_needsize(type,base,cur,cnt,init) \ 1384#define array_needsize(type,base,cur,cnt,init) \
692 if (expect_false ((cnt) > (cur))) \ 1385 if (expect_false ((cnt) > (cur))) \
693 { \ 1386 { \
694 int ocur_ = (cur); \ 1387 int ecb_unused ocur_ = (cur); \
695 (base) = (type *)array_realloc \ 1388 (base) = (type *)array_realloc \
696 (sizeof (type), (base), &(cur), (cnt)); \ 1389 (sizeof (type), (base), &(cur), (cnt)); \
697 init ((base) + (ocur_), (cur) - ocur_); \ 1390 init ((base) + (ocur_), (cur) - ocur_); \
698 } 1391 }
699 1392
… …
760} 1453}
761 1454
762/*****************************************************************************/ 1455/*****************************************************************************/
763 1456
764inline_speed void 1457inline_speed void
765fd_event (EV_P_ int fd, int revents) 1458fd_event_nocheck (EV_P_ int fd, int revents)
766{ 1459{
767 ANFD *anfd = anfds + fd; 1460 ANFD *anfd = anfds + fd;
768 ev_io *w; 1461 ev_io *w;
769 1462
770 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1463 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
774 if (ev) 1467 if (ev)
775 ev_feed_event (EV_A_ (W)w, ev); 1468 ev_feed_event (EV_A_ (W)w, ev);
776 } 1469 }
777} 1470}
778 1471
1472/* do not submit kernel events for fds that have reify set */
1473/* because that means they changed while we were polling for new events */
1474inline_speed void
1475fd_event (EV_P_ int fd, int revents)
1476{
1477 ANFD *anfd = anfds + fd;
1478
1479 if (expect_true (!anfd->reify))
1480 fd_event_nocheck (EV_A_ fd, revents);
1481}
1482
779void 1483void
780ev_feed_fd_event (EV_P_ int fd, int revents) 1484ev_feed_fd_event (EV_P_ int fd, int revents)
781{ 1485{
782 if (fd >= 0 && fd < anfdmax) 1486 if (fd >= 0 && fd < anfdmax)
783 fd_event (EV_A_ fd, revents); 1487 fd_event_nocheck (EV_A_ fd, revents);
784} 1488}
785 1489
786/* make sure the external fd watch events are in-sync */ 1490/* make sure the external fd watch events are in-sync */
787/* with the kernel/libev internal state */ 1491/* with the kernel/libev internal state */
788inline_size void 1492inline_size void
789fd_reify (EV_P) 1493fd_reify (EV_P)
790{ 1494{
791 int i; 1495 int i;
792 1496
1497#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1498 for (i = 0; i < fdchangecnt; ++i)
1499 {
1500 int fd = fdchanges [i];
1501 ANFD *anfd = anfds + fd;
1502
1503 if (anfd->reify & EV__IOFDSET && anfd->head)
1504 {
1505 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1506
1507 if (handle != anfd->handle)
1508 {
1509 unsigned long arg;
1510
1511 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1512
1513 /* handle changed, but fd didn't - we need to do it in two steps */
1514 backend_modify (EV_A_ fd, anfd->events, 0);
1515 anfd->events = 0;
1516 anfd->handle = handle;
1517 }
1518 }
1519 }
1520#endif
1521
793 for (i = 0; i < fdchangecnt; ++i) 1522 for (i = 0; i < fdchangecnt; ++i)
794 { 1523 {
795 int fd = fdchanges [i]; 1524 int fd = fdchanges [i];
796 ANFD *anfd = anfds + fd; 1525 ANFD *anfd = anfds + fd;
797 ev_io *w; 1526 ev_io *w;
798 1527
799 unsigned char events = 0; 1528 unsigned char o_events = anfd->events;
1529 unsigned char o_reify = anfd->reify;
800 1530
801 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1531 anfd->reify = 0;
802 events |= (unsigned char)w->events;
803 1532
804#if EV_SELECT_IS_WINSOCKET 1533 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
805 if (events)
806 { 1534 {
807 unsigned long arg; 1535 anfd->events = 0;
808 #ifdef EV_FD_TO_WIN32_HANDLE 1536
809 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1537 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
810 #else 1538 anfd->events |= (unsigned char)w->events;
811 anfd->handle = _get_osfhandle (fd); 1539
812 #endif 1540 if (o_events != anfd->events)
813 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1541 o_reify = EV__IOFDSET; /* actually |= */
814 } 1542 }
815#endif
816 1543
817 { 1544 if (o_reify & EV__IOFDSET)
818 unsigned char o_events = anfd->events;
819 unsigned char o_reify = anfd->reify;
820
821 anfd->reify = 0;
822 anfd->events = events;
823
824 if (o_events != events || o_reify & EV__IOFDSET)
825 backend_modify (EV_A_ fd, o_events, events); 1545 backend_modify (EV_A_ fd, o_events, anfd->events);
826 }
827 } 1546 }
828 1547
829 fdchangecnt = 0; 1548 fdchangecnt = 0;
830} 1549}
831 1550
… …
843 fdchanges [fdchangecnt - 1] = fd; 1562 fdchanges [fdchangecnt - 1] = fd;
844 } 1563 }
845} 1564}
846 1565
847/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1566/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
848inline_speed void 1567inline_speed void ecb_cold
849fd_kill (EV_P_ int fd) 1568fd_kill (EV_P_ int fd)
850{ 1569{
851 ev_io *w; 1570 ev_io *w;
852 1571
853 while ((w = (ev_io *)anfds [fd].head)) 1572 while ((w = (ev_io *)anfds [fd].head))
… …
855 ev_io_stop (EV_A_ w); 1574 ev_io_stop (EV_A_ w);
856 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1575 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
857 } 1576 }
858} 1577}
859 1578
860/* check whether the given fd is atcually valid, for error recovery */ 1579/* check whether the given fd is actually valid, for error recovery */
861inline_size int 1580inline_size int ecb_cold
862fd_valid (int fd) 1581fd_valid (int fd)
863{ 1582{
864#ifdef _WIN32 1583#ifdef _WIN32
865 return _get_osfhandle (fd) != -1; 1584 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
866#else 1585#else
867 return fcntl (fd, F_GETFD) != -1; 1586 return fcntl (fd, F_GETFD) != -1;
868#endif 1587#endif
869} 1588}
870 1589
871/* called on EBADF to verify fds */ 1590/* called on EBADF to verify fds */
872static void noinline 1591static void noinline ecb_cold
873fd_ebadf (EV_P) 1592fd_ebadf (EV_P)
874{ 1593{
875 int fd; 1594 int fd;
876 1595
877 for (fd = 0; fd < anfdmax; ++fd) 1596 for (fd = 0; fd < anfdmax; ++fd)
… …
879 if (!fd_valid (fd) && errno == EBADF) 1598 if (!fd_valid (fd) && errno == EBADF)
880 fd_kill (EV_A_ fd); 1599 fd_kill (EV_A_ fd);
881} 1600}
882 1601
883/* called on ENOMEM in select/poll to kill some fds and retry */ 1602/* called on ENOMEM in select/poll to kill some fds and retry */
884static void noinline 1603static void noinline ecb_cold
885fd_enomem (EV_P) 1604fd_enomem (EV_P)
886{ 1605{
887 int fd; 1606 int fd;
888 1607
889 for (fd = anfdmax; fd--; ) 1608 for (fd = anfdmax; fd--; )
890 if (anfds [fd].events) 1609 if (anfds [fd].events)
891 { 1610 {
892 fd_kill (EV_A_ fd); 1611 fd_kill (EV_A_ fd);
893 return; 1612 break;
894 } 1613 }
895} 1614}
896 1615
897/* usually called after fork if backend needs to re-arm all fds from scratch */ 1616/* usually called after fork if backend needs to re-arm all fds from scratch */
898static void noinline 1617static void noinline
… …
903 for (fd = 0; fd < anfdmax; ++fd) 1622 for (fd = 0; fd < anfdmax; ++fd)
904 if (anfds [fd].events) 1623 if (anfds [fd].events)
905 { 1624 {
906 anfds [fd].events = 0; 1625 anfds [fd].events = 0;
907 anfds [fd].emask = 0; 1626 anfds [fd].emask = 0;
908 fd_change (EV_A_ fd, EV__IOFDSET | 1); 1627 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
909 } 1628 }
910} 1629}
911 1630
1631/* used to prepare libev internal fd's */
1632/* this is not fork-safe */
1633inline_speed void
1634fd_intern (int fd)
1635{
1636#ifdef _WIN32
1637 unsigned long arg = 1;
1638 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1639#else
1640 fcntl (fd, F_SETFD, FD_CLOEXEC);
1641 fcntl (fd, F_SETFL, O_NONBLOCK);
1642#endif
1643}
1644
912/*****************************************************************************/ 1645/*****************************************************************************/
913 1646
914/* 1647/*
915 * the heap functions want a real array index. array index 0 uis guaranteed to not 1648 * the heap functions want a real array index. array index 0 is guaranteed to not
916 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1649 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
917 * the branching factor of the d-tree. 1650 * the branching factor of the d-tree.
918 */ 1651 */
919 1652
920/* 1653/*
… …
988 1721
989 for (;;) 1722 for (;;)
990 { 1723 {
991 int c = k << 1; 1724 int c = k << 1;
992 1725
993 if (c > N + HEAP0 - 1) 1726 if (c >= N + HEAP0)
994 break; 1727 break;
995 1728
996 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1729 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
997 ? 1 : 0; 1730 ? 1 : 0;
998 1731
… …
1034 1767
1035/* move an element suitably so it is in a correct place */ 1768/* move an element suitably so it is in a correct place */
1036inline_size void 1769inline_size void
1037adjustheap (ANHE *heap, int N, int k) 1770adjustheap (ANHE *heap, int N, int k)
1038{ 1771{
1039 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1772 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1040 upheap (heap, k); 1773 upheap (heap, k);
1041 else 1774 else
1042 downheap (heap, N, k); 1775 downheap (heap, N, k);
1043} 1776}
1044 1777
… …
1057/*****************************************************************************/ 1790/*****************************************************************************/
1058 1791
1059/* associate signal watchers to a signal signal */ 1792/* associate signal watchers to a signal signal */
1060typedef struct 1793typedef struct
1061{ 1794{
1795 EV_ATOMIC_T pending;
1796#if EV_MULTIPLICITY
1797 EV_P;
1798#endif
1062 WL head; 1799 WL head;
1063 EV_ATOMIC_T gotsig;
1064} ANSIG; 1800} ANSIG;
1065 1801
1066static ANSIG *signals; 1802static ANSIG signals [EV_NSIG - 1];
1067static int signalmax;
1068
1069static EV_ATOMIC_T gotsig;
1070 1803
1071/*****************************************************************************/ 1804/*****************************************************************************/
1072 1805
1073/* used to prepare libev internal fd's */ 1806#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1074/* this is not fork-safe */
1075inline_speed void
1076fd_intern (int fd)
1077{
1078#ifdef _WIN32
1079 unsigned long arg = 1;
1080 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1081#else
1082 fcntl (fd, F_SETFD, FD_CLOEXEC);
1083 fcntl (fd, F_SETFL, O_NONBLOCK);
1084#endif
1085}
1086 1807
1087static void noinline 1808static void noinline ecb_cold
1088evpipe_init (EV_P) 1809evpipe_init (EV_P)
1089{ 1810{
1090 if (!ev_is_active (&pipe_w)) 1811 if (!ev_is_active (&pipe_w))
1091 { 1812 {
1092#if EV_USE_EVENTFD 1813# if EV_USE_EVENTFD
1814 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1815 if (evfd < 0 && errno == EINVAL)
1093 if ((evfd = eventfd (0, 0)) >= 0) 1816 evfd = eventfd (0, 0);
1817
1818 if (evfd >= 0)
1094 { 1819 {
1095 evpipe [0] = -1; 1820 evpipe [0] = -1;
1096 fd_intern (evfd); 1821 fd_intern (evfd); /* doing it twice doesn't hurt */
1097 ev_io_set (&pipe_w, evfd, EV_READ); 1822 ev_io_set (&pipe_w, evfd, EV_READ);
1098 } 1823 }
1099 else 1824 else
1100#endif 1825# endif
1101 { 1826 {
1102 while (pipe (evpipe)) 1827 while (pipe (evpipe))
1103 ev_syserr ("(libev) error creating signal/async pipe"); 1828 ev_syserr ("(libev) error creating signal/async pipe");
1104 1829
1105 fd_intern (evpipe [0]); 1830 fd_intern (evpipe [0]);
… …
1110 ev_io_start (EV_A_ &pipe_w); 1835 ev_io_start (EV_A_ &pipe_w);
1111 ev_unref (EV_A); /* watcher should not keep loop alive */ 1836 ev_unref (EV_A); /* watcher should not keep loop alive */
1112 } 1837 }
1113} 1838}
1114 1839
1115inline_size void 1840inline_speed void
1116evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1841evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1117{ 1842{
1118 if (!*flag) 1843 if (expect_true (*flag))
1844 return;
1845
1846 *flag = 1;
1847
1848 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1849
1850 pipe_write_skipped = 1;
1851
1852 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1853
1854 if (pipe_write_wanted)
1119 { 1855 {
1856 int old_errno;
1857
1858 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1859
1120 int old_errno = errno; /* save errno because write might clobber it */ 1860 old_errno = errno; /* save errno because write will clobber it */
1121
1122 *flag = 1;
1123 1861
1124#if EV_USE_EVENTFD 1862#if EV_USE_EVENTFD
1125 if (evfd >= 0) 1863 if (evfd >= 0)
1126 { 1864 {
1127 uint64_t counter = 1; 1865 uint64_t counter = 1;
1128 write (evfd, &counter, sizeof (uint64_t)); 1866 write (evfd, &counter, sizeof (uint64_t));
1129 } 1867 }
1130 else 1868 else
1131#endif 1869#endif
1870 {
1871 /* win32 people keep sending patches that change this write() to send() */
1872 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1873 /* so when you think this write should be a send instead, please find out */
1874 /* where your send() is from - it's definitely not the microsoft send, and */
1875 /* tell me. thank you. */
1132 write (evpipe [1], &old_errno, 1); 1876 write (evpipe [1], &(evpipe [1]), 1);
1877 }
1133 1878
1134 errno = old_errno; 1879 errno = old_errno;
1135 } 1880 }
1136} 1881}
1137 1882
1138/* called whenever the libev signal pipe */ 1883/* called whenever the libev signal pipe */
1139/* got some events (signal, async) */ 1884/* got some events (signal, async) */
1140static void 1885static void
1141pipecb (EV_P_ ev_io *iow, int revents) 1886pipecb (EV_P_ ev_io *iow, int revents)
1142{ 1887{
1888 int i;
1889
1890 if (revents & EV_READ)
1891 {
1143#if EV_USE_EVENTFD 1892#if EV_USE_EVENTFD
1144 if (evfd >= 0) 1893 if (evfd >= 0)
1145 { 1894 {
1146 uint64_t counter; 1895 uint64_t counter;
1147 read (evfd, &counter, sizeof (uint64_t)); 1896 read (evfd, &counter, sizeof (uint64_t));
1148 } 1897 }
1149 else 1898 else
1150#endif 1899#endif
1151 { 1900 {
1152 char dummy; 1901 char dummy;
1902 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1153 read (evpipe [0], &dummy, 1); 1903 read (evpipe [0], &dummy, 1);
1904 }
1905 }
1906
1907 pipe_write_skipped = 0;
1908
1909#if EV_SIGNAL_ENABLE
1910 if (sig_pending)
1154 } 1911 {
1912 sig_pending = 0;
1155 1913
1156 if (gotsig && ev_is_default_loop (EV_A)) 1914 for (i = EV_NSIG - 1; i--; )
1157 { 1915 if (expect_false (signals [i].pending))
1158 int signum;
1159 gotsig = 0;
1160
1161 for (signum = signalmax; signum--; )
1162 if (signals [signum].gotsig)
1163 ev_feed_signal_event (EV_A_ signum + 1); 1916 ev_feed_signal_event (EV_A_ i + 1);
1164 } 1917 }
1918#endif
1165 1919
1166#if EV_ASYNC_ENABLE 1920#if EV_ASYNC_ENABLE
1167 if (gotasync) 1921 if (async_pending)
1168 { 1922 {
1169 int i; 1923 async_pending = 0;
1170 gotasync = 0;
1171 1924
1172 for (i = asynccnt; i--; ) 1925 for (i = asynccnt; i--; )
1173 if (asyncs [i]->sent) 1926 if (asyncs [i]->sent)
1174 { 1927 {
1175 asyncs [i]->sent = 0; 1928 asyncs [i]->sent = 0;
… …
1179#endif 1932#endif
1180} 1933}
1181 1934
1182/*****************************************************************************/ 1935/*****************************************************************************/
1183 1936
1937void
1938ev_feed_signal (int signum)
1939{
1940#if EV_MULTIPLICITY
1941 EV_P = signals [signum - 1].loop;
1942
1943 if (!EV_A)
1944 return;
1945#endif
1946
1947 if (!ev_active (&pipe_w))
1948 return;
1949
1950 signals [signum - 1].pending = 1;
1951 evpipe_write (EV_A_ &sig_pending);
1952}
1953
1184static void 1954static void
1185ev_sighandler (int signum) 1955ev_sighandler (int signum)
1186{ 1956{
1187#if EV_MULTIPLICITY
1188 struct ev_loop *loop = &default_loop_struct;
1189#endif
1190
1191#if _WIN32 1957#ifdef _WIN32
1192 signal (signum, ev_sighandler); 1958 signal (signum, ev_sighandler);
1193#endif 1959#endif
1194 1960
1195 signals [signum - 1].gotsig = 1; 1961 ev_feed_signal (signum);
1196 evpipe_write (EV_A_ &gotsig);
1197} 1962}
1198 1963
1199void noinline 1964void noinline
1200ev_feed_signal_event (EV_P_ int signum) 1965ev_feed_signal_event (EV_P_ int signum)
1201{ 1966{
1202 WL w; 1967 WL w;
1203 1968
1969 if (expect_false (signum <= 0 || signum > EV_NSIG))
1970 return;
1971
1972 --signum;
1973
1204#if EV_MULTIPLICITY 1974#if EV_MULTIPLICITY
1205 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1975 /* it is permissible to try to feed a signal to the wrong loop */
1206#endif 1976 /* or, likely more useful, feeding a signal nobody is waiting for */
1207 1977
1208 --signum; 1978 if (expect_false (signals [signum].loop != EV_A))
1209
1210 if (signum < 0 || signum >= signalmax)
1211 return; 1979 return;
1980#endif
1212 1981
1213 signals [signum].gotsig = 0; 1982 signals [signum].pending = 0;
1214 1983
1215 for (w = signals [signum].head; w; w = w->next) 1984 for (w = signals [signum].head; w; w = w->next)
1216 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1985 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1217} 1986}
1218 1987
1988#if EV_USE_SIGNALFD
1989static void
1990sigfdcb (EV_P_ ev_io *iow, int revents)
1991{
1992 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1993
1994 for (;;)
1995 {
1996 ssize_t res = read (sigfd, si, sizeof (si));
1997
1998 /* not ISO-C, as res might be -1, but works with SuS */
1999 for (sip = si; (char *)sip < (char *)si + res; ++sip)
2000 ev_feed_signal_event (EV_A_ sip->ssi_signo);
2001
2002 if (res < (ssize_t)sizeof (si))
2003 break;
2004 }
2005}
2006#endif
2007
2008#endif
2009
1219/*****************************************************************************/ 2010/*****************************************************************************/
1220 2011
2012#if EV_CHILD_ENABLE
1221static WL childs [EV_PID_HASHSIZE]; 2013static WL childs [EV_PID_HASHSIZE];
1222
1223#ifndef _WIN32
1224 2014
1225static ev_signal childev; 2015static ev_signal childev;
1226 2016
1227#ifndef WIFCONTINUED 2017#ifndef WIFCONTINUED
1228# define WIFCONTINUED(status) 0 2018# define WIFCONTINUED(status) 0
… …
1233child_reap (EV_P_ int chain, int pid, int status) 2023child_reap (EV_P_ int chain, int pid, int status)
1234{ 2024{
1235 ev_child *w; 2025 ev_child *w;
1236 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2026 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1237 2027
1238 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2028 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1239 { 2029 {
1240 if ((w->pid == pid || !w->pid) 2030 if ((w->pid == pid || !w->pid)
1241 && (!traced || (w->flags & 1))) 2031 && (!traced || (w->flags & 1)))
1242 { 2032 {
1243 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2033 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1268 /* make sure we are called again until all children have been reaped */ 2058 /* make sure we are called again until all children have been reaped */
1269 /* we need to do it this way so that the callback gets called before we continue */ 2059 /* we need to do it this way so that the callback gets called before we continue */
1270 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2060 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1271 2061
1272 child_reap (EV_A_ pid, pid, status); 2062 child_reap (EV_A_ pid, pid, status);
1273 if (EV_PID_HASHSIZE > 1) 2063 if ((EV_PID_HASHSIZE) > 1)
1274 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2064 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1275} 2065}
1276 2066
1277#endif 2067#endif
1278 2068
1279/*****************************************************************************/ 2069/*****************************************************************************/
1280 2070
2071#if EV_USE_IOCP
2072# include "ev_iocp.c"
2073#endif
1281#if EV_USE_PORT 2074#if EV_USE_PORT
1282# include "ev_port.c" 2075# include "ev_port.c"
1283#endif 2076#endif
1284#if EV_USE_KQUEUE 2077#if EV_USE_KQUEUE
1285# include "ev_kqueue.c" 2078# include "ev_kqueue.c"
… …
1292#endif 2085#endif
1293#if EV_USE_SELECT 2086#if EV_USE_SELECT
1294# include "ev_select.c" 2087# include "ev_select.c"
1295#endif 2088#endif
1296 2089
1297int 2090int ecb_cold
1298ev_version_major (void) 2091ev_version_major (void)
1299{ 2092{
1300 return EV_VERSION_MAJOR; 2093 return EV_VERSION_MAJOR;
1301} 2094}
1302 2095
1303int 2096int ecb_cold
1304ev_version_minor (void) 2097ev_version_minor (void)
1305{ 2098{
1306 return EV_VERSION_MINOR; 2099 return EV_VERSION_MINOR;
1307} 2100}
1308 2101
1309/* return true if we are running with elevated privileges and should ignore env variables */ 2102/* return true if we are running with elevated privileges and should ignore env variables */
1310int inline_size 2103int inline_size ecb_cold
1311enable_secure (void) 2104enable_secure (void)
1312{ 2105{
1313#ifdef _WIN32 2106#ifdef _WIN32
1314 return 0; 2107 return 0;
1315#else 2108#else
1316 return getuid () != geteuid () 2109 return getuid () != geteuid ()
1317 || getgid () != getegid (); 2110 || getgid () != getegid ();
1318#endif 2111#endif
1319} 2112}
1320 2113
1321unsigned int 2114unsigned int ecb_cold
1322ev_supported_backends (void) 2115ev_supported_backends (void)
1323{ 2116{
1324 unsigned int flags = 0; 2117 unsigned int flags = 0;
1325 2118
1326 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2119 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1330 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2123 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1331 2124
1332 return flags; 2125 return flags;
1333} 2126}
1334 2127
1335unsigned int 2128unsigned int ecb_cold
1336ev_recommended_backends (void) 2129ev_recommended_backends (void)
1337{ 2130{
1338 unsigned int flags = ev_supported_backends (); 2131 unsigned int flags = ev_supported_backends ();
1339 2132
1340#ifndef __NetBSD__ 2133#ifndef __NetBSD__
… …
1345#ifdef __APPLE__ 2138#ifdef __APPLE__
1346 /* only select works correctly on that "unix-certified" platform */ 2139 /* only select works correctly on that "unix-certified" platform */
1347 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2140 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1348 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2141 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1349#endif 2142#endif
2143#ifdef __FreeBSD__
2144 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2145#endif
1350 2146
1351 return flags; 2147 return flags;
1352} 2148}
1353 2149
1354unsigned int 2150unsigned int ecb_cold
1355ev_embeddable_backends (void) 2151ev_embeddable_backends (void)
1356{ 2152{
1357 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2153 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1358 2154
1359 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2155 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1360 /* please fix it and tell me how to detect the fix */ 2156 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1361 flags &= ~EVBACKEND_EPOLL; 2157 flags &= ~EVBACKEND_EPOLL;
1362 2158
1363 return flags; 2159 return flags;
1364} 2160}
1365 2161
1366unsigned int 2162unsigned int
1367ev_backend (EV_P) 2163ev_backend (EV_P)
1368{ 2164{
1369 return backend; 2165 return backend;
1370} 2166}
1371 2167
1372#if EV_MINIMAL < 2 2168#if EV_FEATURE_API
1373unsigned int 2169unsigned int
1374ev_loop_count (EV_P) 2170ev_iteration (EV_P)
1375{ 2171{
1376 return loop_count; 2172 return loop_count;
1377} 2173}
1378 2174
1379unsigned int 2175unsigned int
1380ev_loop_depth (EV_P) 2176ev_depth (EV_P)
1381{ 2177{
1382 return loop_depth; 2178 return loop_depth;
1383} 2179}
1384 2180
1385void 2181void
… …
1404ev_userdata (EV_P) 2200ev_userdata (EV_P)
1405{ 2201{
1406 return userdata; 2202 return userdata;
1407} 2203}
1408 2204
2205void
1409void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2206ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1410{ 2207{
1411 invoke_cb = invoke_pending_cb; 2208 invoke_cb = invoke_pending_cb;
1412} 2209}
1413 2210
1414void ev_set_blocking_cb (EV_P_ void (*suspend_cb_)(EV_P), void (*resume_cb_)(EV_P)) 2211void
2212ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1415{ 2213{
1416 suspend_cb = suspend_cb_; 2214 release_cb = release;
1417 resume_cb = resume_cb_; 2215 acquire_cb = acquire;
1418} 2216}
1419#endif 2217#endif
1420 2218
1421/* initialise a loop structure, must be zero-initialised */ 2219/* initialise a loop structure, must be zero-initialised */
1422static void noinline 2220static void noinline ecb_cold
1423loop_init (EV_P_ unsigned int flags) 2221loop_init (EV_P_ unsigned int flags)
1424{ 2222{
1425 if (!backend) 2223 if (!backend)
1426 { 2224 {
2225 origflags = flags;
2226
1427#if EV_USE_REALTIME 2227#if EV_USE_REALTIME
1428 if (!have_realtime) 2228 if (!have_realtime)
1429 { 2229 {
1430 struct timespec ts; 2230 struct timespec ts;
1431 2231
… …
1442 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2242 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1443 have_monotonic = 1; 2243 have_monotonic = 1;
1444 } 2244 }
1445#endif 2245#endif
1446 2246
1447 ev_rt_now = ev_time ();
1448 mn_now = get_clock ();
1449 now_floor = mn_now;
1450 rtmn_diff = ev_rt_now - mn_now;
1451#if EV_MINIMAL < 2
1452 invoke_cb = ev_invoke_pending;
1453#endif
1454
1455 io_blocktime = 0.;
1456 timeout_blocktime = 0.;
1457 backend = 0;
1458 backend_fd = -1;
1459 gotasync = 0;
1460#if EV_USE_INOTIFY
1461 fs_fd = -2;
1462#endif
1463
1464 /* pid check not overridable via env */ 2247 /* pid check not overridable via env */
1465#ifndef _WIN32 2248#ifndef _WIN32
1466 if (flags & EVFLAG_FORKCHECK) 2249 if (flags & EVFLAG_FORKCHECK)
1467 curpid = getpid (); 2250 curpid = getpid ();
1468#endif 2251#endif
… …
1470 if (!(flags & EVFLAG_NOENV) 2253 if (!(flags & EVFLAG_NOENV)
1471 && !enable_secure () 2254 && !enable_secure ()
1472 && getenv ("LIBEV_FLAGS")) 2255 && getenv ("LIBEV_FLAGS"))
1473 flags = atoi (getenv ("LIBEV_FLAGS")); 2256 flags = atoi (getenv ("LIBEV_FLAGS"));
1474 2257
1475 if (!(flags & 0x0000ffffU)) 2258 ev_rt_now = ev_time ();
2259 mn_now = get_clock ();
2260 now_floor = mn_now;
2261 rtmn_diff = ev_rt_now - mn_now;
2262#if EV_FEATURE_API
2263 invoke_cb = ev_invoke_pending;
2264#endif
2265
2266 io_blocktime = 0.;
2267 timeout_blocktime = 0.;
2268 backend = 0;
2269 backend_fd = -1;
2270 sig_pending = 0;
2271#if EV_ASYNC_ENABLE
2272 async_pending = 0;
2273#endif
2274 pipe_write_skipped = 0;
2275 pipe_write_wanted = 0;
2276#if EV_USE_INOTIFY
2277 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2278#endif
2279#if EV_USE_SIGNALFD
2280 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2281#endif
2282
2283 if (!(flags & EVBACKEND_MASK))
1476 flags |= ev_recommended_backends (); 2284 flags |= ev_recommended_backends ();
1477 2285
2286#if EV_USE_IOCP
2287 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2288#endif
1478#if EV_USE_PORT 2289#if EV_USE_PORT
1479 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2290 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1480#endif 2291#endif
1481#if EV_USE_KQUEUE 2292#if EV_USE_KQUEUE
1482 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2293 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1491 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2302 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1492#endif 2303#endif
1493 2304
1494 ev_prepare_init (&pending_w, pendingcb); 2305 ev_prepare_init (&pending_w, pendingcb);
1495 2306
2307#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1496 ev_init (&pipe_w, pipecb); 2308 ev_init (&pipe_w, pipecb);
1497 ev_set_priority (&pipe_w, EV_MAXPRI); 2309 ev_set_priority (&pipe_w, EV_MAXPRI);
2310#endif
1498 } 2311 }
1499} 2312}
1500 2313
1501/* free up a loop structure */ 2314/* free up a loop structure */
1502static void noinline 2315void ecb_cold
1503loop_destroy (EV_P) 2316ev_loop_destroy (EV_P)
1504{ 2317{
1505 int i; 2318 int i;
1506 2319
2320#if EV_MULTIPLICITY
2321 /* mimic free (0) */
2322 if (!EV_A)
2323 return;
2324#endif
2325
2326#if EV_CLEANUP_ENABLE
2327 /* queue cleanup watchers (and execute them) */
2328 if (expect_false (cleanupcnt))
2329 {
2330 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2331 EV_INVOKE_PENDING;
2332 }
2333#endif
2334
2335#if EV_CHILD_ENABLE
2336 if (ev_is_active (&childev))
2337 {
2338 ev_ref (EV_A); /* child watcher */
2339 ev_signal_stop (EV_A_ &childev);
2340 }
2341#endif
2342
1507 if (ev_is_active (&pipe_w)) 2343 if (ev_is_active (&pipe_w))
1508 { 2344 {
1509 ev_ref (EV_A); /* signal watcher */ 2345 /*ev_ref (EV_A);*/
1510 ev_io_stop (EV_A_ &pipe_w); 2346 /*ev_io_stop (EV_A_ &pipe_w);*/
1511 2347
1512#if EV_USE_EVENTFD 2348#if EV_USE_EVENTFD
1513 if (evfd >= 0) 2349 if (evfd >= 0)
1514 close (evfd); 2350 close (evfd);
1515#endif 2351#endif
1516 2352
1517 if (evpipe [0] >= 0) 2353 if (evpipe [0] >= 0)
1518 { 2354 {
1519 close (evpipe [0]); 2355 EV_WIN32_CLOSE_FD (evpipe [0]);
1520 close (evpipe [1]); 2356 EV_WIN32_CLOSE_FD (evpipe [1]);
1521 } 2357 }
1522 } 2358 }
2359
2360#if EV_USE_SIGNALFD
2361 if (ev_is_active (&sigfd_w))
2362 close (sigfd);
2363#endif
1523 2364
1524#if EV_USE_INOTIFY 2365#if EV_USE_INOTIFY
1525 if (fs_fd >= 0) 2366 if (fs_fd >= 0)
1526 close (fs_fd); 2367 close (fs_fd);
1527#endif 2368#endif
1528 2369
1529 if (backend_fd >= 0) 2370 if (backend_fd >= 0)
1530 close (backend_fd); 2371 close (backend_fd);
1531 2372
2373#if EV_USE_IOCP
2374 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2375#endif
1532#if EV_USE_PORT 2376#if EV_USE_PORT
1533 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2377 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1534#endif 2378#endif
1535#if EV_USE_KQUEUE 2379#if EV_USE_KQUEUE
1536 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2380 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1551#if EV_IDLE_ENABLE 2395#if EV_IDLE_ENABLE
1552 array_free (idle, [i]); 2396 array_free (idle, [i]);
1553#endif 2397#endif
1554 } 2398 }
1555 2399
1556 ev_free (anfds); anfdmax = 0; 2400 ev_free (anfds); anfds = 0; anfdmax = 0;
1557 2401
1558 /* have to use the microsoft-never-gets-it-right macro */ 2402 /* have to use the microsoft-never-gets-it-right macro */
1559 array_free (rfeed, EMPTY); 2403 array_free (rfeed, EMPTY);
1560 array_free (fdchange, EMPTY); 2404 array_free (fdchange, EMPTY);
1561 array_free (timer, EMPTY); 2405 array_free (timer, EMPTY);
… …
1563 array_free (periodic, EMPTY); 2407 array_free (periodic, EMPTY);
1564#endif 2408#endif
1565#if EV_FORK_ENABLE 2409#if EV_FORK_ENABLE
1566 array_free (fork, EMPTY); 2410 array_free (fork, EMPTY);
1567#endif 2411#endif
2412#if EV_CLEANUP_ENABLE
2413 array_free (cleanup, EMPTY);
2414#endif
1568 array_free (prepare, EMPTY); 2415 array_free (prepare, EMPTY);
1569 array_free (check, EMPTY); 2416 array_free (check, EMPTY);
1570#if EV_ASYNC_ENABLE 2417#if EV_ASYNC_ENABLE
1571 array_free (async, EMPTY); 2418 array_free (async, EMPTY);
1572#endif 2419#endif
1573 2420
1574 backend = 0; 2421 backend = 0;
2422
2423#if EV_MULTIPLICITY
2424 if (ev_is_default_loop (EV_A))
2425#endif
2426 ev_default_loop_ptr = 0;
2427#if EV_MULTIPLICITY
2428 else
2429 ev_free (EV_A);
2430#endif
1575} 2431}
1576 2432
1577#if EV_USE_INOTIFY 2433#if EV_USE_INOTIFY
1578inline_size void infy_fork (EV_P); 2434inline_size void infy_fork (EV_P);
1579#endif 2435#endif
… …
1594 infy_fork (EV_A); 2450 infy_fork (EV_A);
1595#endif 2451#endif
1596 2452
1597 if (ev_is_active (&pipe_w)) 2453 if (ev_is_active (&pipe_w))
1598 { 2454 {
1599 /* this "locks" the handlers against writing to the pipe */ 2455 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1600 /* while we modify the fd vars */
1601 gotsig = 1;
1602#if EV_ASYNC_ENABLE
1603 gotasync = 1;
1604#endif
1605 2456
1606 ev_ref (EV_A); 2457 ev_ref (EV_A);
1607 ev_io_stop (EV_A_ &pipe_w); 2458 ev_io_stop (EV_A_ &pipe_w);
1608 2459
1609#if EV_USE_EVENTFD 2460#if EV_USE_EVENTFD
… …
1611 close (evfd); 2462 close (evfd);
1612#endif 2463#endif
1613 2464
1614 if (evpipe [0] >= 0) 2465 if (evpipe [0] >= 0)
1615 { 2466 {
1616 close (evpipe [0]); 2467 EV_WIN32_CLOSE_FD (evpipe [0]);
1617 close (evpipe [1]); 2468 EV_WIN32_CLOSE_FD (evpipe [1]);
1618 } 2469 }
1619 2470
2471#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1620 evpipe_init (EV_A); 2472 evpipe_init (EV_A);
1621 /* now iterate over everything, in case we missed something */ 2473 /* now iterate over everything, in case we missed something */
1622 pipecb (EV_A_ &pipe_w, EV_READ); 2474 pipecb (EV_A_ &pipe_w, EV_READ);
2475#endif
1623 } 2476 }
1624 2477
1625 postfork = 0; 2478 postfork = 0;
1626} 2479}
1627 2480
1628#if EV_MULTIPLICITY 2481#if EV_MULTIPLICITY
1629 2482
1630struct ev_loop * 2483struct ev_loop * ecb_cold
1631ev_loop_new (unsigned int flags) 2484ev_loop_new (unsigned int flags)
1632{ 2485{
1633 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2486 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1634 2487
1635 memset (loop, 0, sizeof (struct ev_loop)); 2488 memset (EV_A, 0, sizeof (struct ev_loop));
1636
1637 loop_init (EV_A_ flags); 2489 loop_init (EV_A_ flags);
1638 2490
1639 if (ev_backend (EV_A)) 2491 if (ev_backend (EV_A))
1640 return loop; 2492 return EV_A;
1641 2493
2494 ev_free (EV_A);
1642 return 0; 2495 return 0;
1643} 2496}
1644 2497
1645void
1646ev_loop_destroy (EV_P)
1647{
1648 loop_destroy (EV_A);
1649 ev_free (loop);
1650}
1651
1652void
1653ev_loop_fork (EV_P)
1654{
1655 postfork = 1; /* must be in line with ev_default_fork */
1656}
1657#endif /* multiplicity */ 2498#endif /* multiplicity */
1658 2499
1659#if EV_VERIFY 2500#if EV_VERIFY
1660static void noinline 2501static void noinline ecb_cold
1661verify_watcher (EV_P_ W w) 2502verify_watcher (EV_P_ W w)
1662{ 2503{
1663 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2504 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1664 2505
1665 if (w->pending) 2506 if (w->pending)
1666 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2507 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1667} 2508}
1668 2509
1669static void noinline 2510static void noinline ecb_cold
1670verify_heap (EV_P_ ANHE *heap, int N) 2511verify_heap (EV_P_ ANHE *heap, int N)
1671{ 2512{
1672 int i; 2513 int i;
1673 2514
1674 for (i = HEAP0; i < N + HEAP0; ++i) 2515 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1679 2520
1680 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2521 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1681 } 2522 }
1682} 2523}
1683 2524
1684static void noinline 2525static void noinline ecb_cold
1685array_verify (EV_P_ W *ws, int cnt) 2526array_verify (EV_P_ W *ws, int cnt)
1686{ 2527{
1687 while (cnt--) 2528 while (cnt--)
1688 { 2529 {
1689 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2530 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1690 verify_watcher (EV_A_ ws [cnt]); 2531 verify_watcher (EV_A_ ws [cnt]);
1691 } 2532 }
1692} 2533}
1693#endif 2534#endif
1694 2535
1695#if EV_MINIMAL < 2 2536#if EV_FEATURE_API
1696void 2537void ecb_cold
1697ev_loop_verify (EV_P) 2538ev_verify (EV_P)
1698{ 2539{
1699#if EV_VERIFY 2540#if EV_VERIFY
1700 int i; 2541 int i;
1701 WL w; 2542 WL w;
1702 2543
… …
1736#if EV_FORK_ENABLE 2577#if EV_FORK_ENABLE
1737 assert (forkmax >= forkcnt); 2578 assert (forkmax >= forkcnt);
1738 array_verify (EV_A_ (W *)forks, forkcnt); 2579 array_verify (EV_A_ (W *)forks, forkcnt);
1739#endif 2580#endif
1740 2581
2582#if EV_CLEANUP_ENABLE
2583 assert (cleanupmax >= cleanupcnt);
2584 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2585#endif
2586
1741#if EV_ASYNC_ENABLE 2587#if EV_ASYNC_ENABLE
1742 assert (asyncmax >= asynccnt); 2588 assert (asyncmax >= asynccnt);
1743 array_verify (EV_A_ (W *)asyncs, asynccnt); 2589 array_verify (EV_A_ (W *)asyncs, asynccnt);
1744#endif 2590#endif
1745 2591
2592#if EV_PREPARE_ENABLE
1746 assert (preparemax >= preparecnt); 2593 assert (preparemax >= preparecnt);
1747 array_verify (EV_A_ (W *)prepares, preparecnt); 2594 array_verify (EV_A_ (W *)prepares, preparecnt);
2595#endif
1748 2596
2597#if EV_CHECK_ENABLE
1749 assert (checkmax >= checkcnt); 2598 assert (checkmax >= checkcnt);
1750 array_verify (EV_A_ (W *)checks, checkcnt); 2599 array_verify (EV_A_ (W *)checks, checkcnt);
2600#endif
1751 2601
1752# if 0 2602# if 0
2603#if EV_CHILD_ENABLE
1753 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2604 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1754 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2605 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2606#endif
1755# endif 2607# endif
1756#endif 2608#endif
1757} 2609}
1758#endif 2610#endif
1759 2611
1760#if EV_MULTIPLICITY 2612#if EV_MULTIPLICITY
1761struct ev_loop * 2613struct ev_loop * ecb_cold
1762ev_default_loop_init (unsigned int flags)
1763#else 2614#else
1764int 2615int
2616#endif
1765ev_default_loop (unsigned int flags) 2617ev_default_loop (unsigned int flags)
1766#endif
1767{ 2618{
1768 if (!ev_default_loop_ptr) 2619 if (!ev_default_loop_ptr)
1769 { 2620 {
1770#if EV_MULTIPLICITY 2621#if EV_MULTIPLICITY
1771 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2622 EV_P = ev_default_loop_ptr = &default_loop_struct;
1772#else 2623#else
1773 ev_default_loop_ptr = 1; 2624 ev_default_loop_ptr = 1;
1774#endif 2625#endif
1775 2626
1776 loop_init (EV_A_ flags); 2627 loop_init (EV_A_ flags);
1777 2628
1778 if (ev_backend (EV_A)) 2629 if (ev_backend (EV_A))
1779 { 2630 {
1780#ifndef _WIN32 2631#if EV_CHILD_ENABLE
1781 ev_signal_init (&childev, childcb, SIGCHLD); 2632 ev_signal_init (&childev, childcb, SIGCHLD);
1782 ev_set_priority (&childev, EV_MAXPRI); 2633 ev_set_priority (&childev, EV_MAXPRI);
1783 ev_signal_start (EV_A_ &childev); 2634 ev_signal_start (EV_A_ &childev);
1784 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2635 ev_unref (EV_A); /* child watcher should not keep loop alive */
1785#endif 2636#endif
… …
1790 2641
1791 return ev_default_loop_ptr; 2642 return ev_default_loop_ptr;
1792} 2643}
1793 2644
1794void 2645void
1795ev_default_destroy (void) 2646ev_loop_fork (EV_P)
1796{ 2647{
1797#if EV_MULTIPLICITY
1798 struct ev_loop *loop = ev_default_loop_ptr;
1799#endif
1800
1801 ev_default_loop_ptr = 0;
1802
1803#ifndef _WIN32
1804 ev_ref (EV_A); /* child watcher */
1805 ev_signal_stop (EV_A_ &childev);
1806#endif
1807
1808 loop_destroy (EV_A);
1809}
1810
1811void
1812ev_default_fork (void)
1813{
1814#if EV_MULTIPLICITY
1815 struct ev_loop *loop = ev_default_loop_ptr;
1816#endif
1817
1818 postfork = 1; /* must be in line with ev_loop_fork */ 2648 postfork = 1; /* must be in line with ev_default_fork */
1819} 2649}
1820 2650
1821/*****************************************************************************/ 2651/*****************************************************************************/
1822 2652
1823void 2653void
1824ev_invoke (EV_P_ void *w, int revents) 2654ev_invoke (EV_P_ void *w, int revents)
1825{ 2655{
1826 EV_CB_INVOKE ((W)w, revents); 2656 EV_CB_INVOKE ((W)w, revents);
2657}
2658
2659unsigned int
2660ev_pending_count (EV_P)
2661{
2662 int pri;
2663 unsigned int count = 0;
2664
2665 for (pri = NUMPRI; pri--; )
2666 count += pendingcnt [pri];
2667
2668 return count;
1827} 2669}
1828 2670
1829void noinline 2671void noinline
1830ev_invoke_pending (EV_P) 2672ev_invoke_pending (EV_P)
1831{ 2673{
… …
1833 2675
1834 for (pri = NUMPRI; pri--; ) 2676 for (pri = NUMPRI; pri--; )
1835 while (pendingcnt [pri]) 2677 while (pendingcnt [pri])
1836 { 2678 {
1837 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2679 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1838
1839 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1840 /* ^ this is no longer true, as pending_w could be here */
1841 2680
1842 p->w->pending = 0; 2681 p->w->pending = 0;
1843 EV_CB_INVOKE (p->w, p->events); 2682 EV_CB_INVOKE (p->w, p->events);
1844 EV_FREQUENT_CHECK; 2683 EV_FREQUENT_CHECK;
1845 } 2684 }
… …
1902 EV_FREQUENT_CHECK; 2741 EV_FREQUENT_CHECK;
1903 feed_reverse (EV_A_ (W)w); 2742 feed_reverse (EV_A_ (W)w);
1904 } 2743 }
1905 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2744 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1906 2745
1907 feed_reverse_done (EV_A_ EV_TIMEOUT); 2746 feed_reverse_done (EV_A_ EV_TIMER);
1908 } 2747 }
1909} 2748}
1910 2749
1911#if EV_PERIODIC_ENABLE 2750#if EV_PERIODIC_ENABLE
2751
2752static void noinline
2753periodic_recalc (EV_P_ ev_periodic *w)
2754{
2755 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2756 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2757
2758 /* the above almost always errs on the low side */
2759 while (at <= ev_rt_now)
2760 {
2761 ev_tstamp nat = at + w->interval;
2762
2763 /* when resolution fails us, we use ev_rt_now */
2764 if (expect_false (nat == at))
2765 {
2766 at = ev_rt_now;
2767 break;
2768 }
2769
2770 at = nat;
2771 }
2772
2773 ev_at (w) = at;
2774}
2775
1912/* make periodics pending */ 2776/* make periodics pending */
1913inline_size void 2777inline_size void
1914periodics_reify (EV_P) 2778periodics_reify (EV_P)
1915{ 2779{
1916 EV_FREQUENT_CHECK; 2780 EV_FREQUENT_CHECK;
… …
1935 ANHE_at_cache (periodics [HEAP0]); 2799 ANHE_at_cache (periodics [HEAP0]);
1936 downheap (periodics, periodiccnt, HEAP0); 2800 downheap (periodics, periodiccnt, HEAP0);
1937 } 2801 }
1938 else if (w->interval) 2802 else if (w->interval)
1939 { 2803 {
1940 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2804 periodic_recalc (EV_A_ w);
1941 /* if next trigger time is not sufficiently in the future, put it there */
1942 /* this might happen because of floating point inexactness */
1943 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1944 {
1945 ev_at (w) += w->interval;
1946
1947 /* if interval is unreasonably low we might still have a time in the past */
1948 /* so correct this. this will make the periodic very inexact, but the user */
1949 /* has effectively asked to get triggered more often than possible */
1950 if (ev_at (w) < ev_rt_now)
1951 ev_at (w) = ev_rt_now;
1952 }
1953
1954 ANHE_at_cache (periodics [HEAP0]); 2805 ANHE_at_cache (periodics [HEAP0]);
1955 downheap (periodics, periodiccnt, HEAP0); 2806 downheap (periodics, periodiccnt, HEAP0);
1956 } 2807 }
1957 else 2808 else
1958 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2809 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1965 feed_reverse_done (EV_A_ EV_PERIODIC); 2816 feed_reverse_done (EV_A_ EV_PERIODIC);
1966 } 2817 }
1967} 2818}
1968 2819
1969/* simply recalculate all periodics */ 2820/* simply recalculate all periodics */
1970/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2821/* TODO: maybe ensure that at least one event happens when jumping forward? */
1971static void noinline 2822static void noinline ecb_cold
1972periodics_reschedule (EV_P) 2823periodics_reschedule (EV_P)
1973{ 2824{
1974 int i; 2825 int i;
1975 2826
1976 /* adjust periodics after time jump */ 2827 /* adjust periodics after time jump */
… …
1979 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2830 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1980 2831
1981 if (w->reschedule_cb) 2832 if (w->reschedule_cb)
1982 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2833 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1983 else if (w->interval) 2834 else if (w->interval)
1984 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2835 periodic_recalc (EV_A_ w);
1985 2836
1986 ANHE_at_cache (periodics [i]); 2837 ANHE_at_cache (periodics [i]);
1987 } 2838 }
1988 2839
1989 reheap (periodics, periodiccnt); 2840 reheap (periodics, periodiccnt);
1990} 2841}
1991#endif 2842#endif
1992 2843
1993/* adjust all timers by a given offset */ 2844/* adjust all timers by a given offset */
1994static void noinline 2845static void noinline ecb_cold
1995timers_reschedule (EV_P_ ev_tstamp adjust) 2846timers_reschedule (EV_P_ ev_tstamp adjust)
1996{ 2847{
1997 int i; 2848 int i;
1998 2849
1999 for (i = 0; i < timercnt; ++i) 2850 for (i = 0; i < timercnt; ++i)
… …
2003 ANHE_at_cache (*he); 2854 ANHE_at_cache (*he);
2004 } 2855 }
2005} 2856}
2006 2857
2007/* fetch new monotonic and realtime times from the kernel */ 2858/* fetch new monotonic and realtime times from the kernel */
2008/* also detetc if there was a timejump, and act accordingly */ 2859/* also detect if there was a timejump, and act accordingly */
2009inline_speed void 2860inline_speed void
2010time_update (EV_P_ ev_tstamp max_block) 2861time_update (EV_P_ ev_tstamp max_block)
2011{ 2862{
2012#if EV_USE_MONOTONIC 2863#if EV_USE_MONOTONIC
2013 if (expect_true (have_monotonic)) 2864 if (expect_true (have_monotonic))
… …
2036 * doesn't hurt either as we only do this on time-jumps or 2887 * doesn't hurt either as we only do this on time-jumps or
2037 * in the unlikely event of having been preempted here. 2888 * in the unlikely event of having been preempted here.
2038 */ 2889 */
2039 for (i = 4; --i; ) 2890 for (i = 4; --i; )
2040 { 2891 {
2892 ev_tstamp diff;
2041 rtmn_diff = ev_rt_now - mn_now; 2893 rtmn_diff = ev_rt_now - mn_now;
2042 2894
2895 diff = odiff - rtmn_diff;
2896
2043 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2897 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2044 return; /* all is well */ 2898 return; /* all is well */
2045 2899
2046 ev_rt_now = ev_time (); 2900 ev_rt_now = ev_time ();
2047 mn_now = get_clock (); 2901 mn_now = get_clock ();
2048 now_floor = mn_now; 2902 now_floor = mn_now;
… …
2071 mn_now = ev_rt_now; 2925 mn_now = ev_rt_now;
2072 } 2926 }
2073} 2927}
2074 2928
2075void 2929void
2076ev_loop (EV_P_ int flags) 2930ev_run (EV_P_ int flags)
2077{ 2931{
2078#if EV_MINIMAL < 2 2932#if EV_FEATURE_API
2079 ++loop_depth; 2933 ++loop_depth;
2080#endif 2934#endif
2081 2935
2936 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2937
2082 loop_done = EVUNLOOP_CANCEL; 2938 loop_done = EVBREAK_CANCEL;
2083 2939
2084 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 2940 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2085 2941
2086 do 2942 do
2087 { 2943 {
2088#if EV_VERIFY >= 2 2944#if EV_VERIFY >= 2
2089 ev_loop_verify (EV_A); 2945 ev_verify (EV_A);
2090#endif 2946#endif
2091 2947
2092#ifndef _WIN32 2948#ifndef _WIN32
2093 if (expect_false (curpid)) /* penalise the forking check even more */ 2949 if (expect_false (curpid)) /* penalise the forking check even more */
2094 if (expect_false (getpid () != curpid)) 2950 if (expect_false (getpid () != curpid))
… …
2106 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2962 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2107 EV_INVOKE_PENDING; 2963 EV_INVOKE_PENDING;
2108 } 2964 }
2109#endif 2965#endif
2110 2966
2967#if EV_PREPARE_ENABLE
2111 /* queue prepare watchers (and execute them) */ 2968 /* queue prepare watchers (and execute them) */
2112 if (expect_false (preparecnt)) 2969 if (expect_false (preparecnt))
2113 { 2970 {
2114 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2971 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2115 EV_INVOKE_PENDING; 2972 EV_INVOKE_PENDING;
2116 } 2973 }
2974#endif
2975
2976 if (expect_false (loop_done))
2977 break;
2117 2978
2118 /* we might have forked, so reify kernel state if necessary */ 2979 /* we might have forked, so reify kernel state if necessary */
2119 if (expect_false (postfork)) 2980 if (expect_false (postfork))
2120 loop_fork (EV_A); 2981 loop_fork (EV_A);
2121 2982
… …
2125 /* calculate blocking time */ 2986 /* calculate blocking time */
2126 { 2987 {
2127 ev_tstamp waittime = 0.; 2988 ev_tstamp waittime = 0.;
2128 ev_tstamp sleeptime = 0.; 2989 ev_tstamp sleeptime = 0.;
2129 2990
2991 /* remember old timestamp for io_blocktime calculation */
2992 ev_tstamp prev_mn_now = mn_now;
2993
2994 /* update time to cancel out callback processing overhead */
2995 time_update (EV_A_ 1e100);
2996
2997 /* from now on, we want a pipe-wake-up */
2998 pipe_write_wanted = 1;
2999
3000 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3001
2130 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3002 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2131 { 3003 {
2132 /* remember old timestamp for io_blocktime calculation */
2133 ev_tstamp prev_mn_now = mn_now;
2134
2135 /* update time to cancel out callback processing overhead */
2136 time_update (EV_A_ 1e100);
2137
2138 waittime = MAX_BLOCKTIME; 3004 waittime = MAX_BLOCKTIME;
2139 3005
2140 if (timercnt) 3006 if (timercnt)
2141 { 3007 {
2142 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3008 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2143 if (waittime > to) waittime = to; 3009 if (waittime > to) waittime = to;
2144 } 3010 }
2145 3011
2146#if EV_PERIODIC_ENABLE 3012#if EV_PERIODIC_ENABLE
2147 if (periodiccnt) 3013 if (periodiccnt)
2148 { 3014 {
2149 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3015 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2150 if (waittime > to) waittime = to; 3016 if (waittime > to) waittime = to;
2151 } 3017 }
2152#endif 3018#endif
2153 3019
2154 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3020 /* don't let timeouts decrease the waittime below timeout_blocktime */
2155 if (expect_false (waittime < timeout_blocktime)) 3021 if (expect_false (waittime < timeout_blocktime))
2156 waittime = timeout_blocktime; 3022 waittime = timeout_blocktime;
3023
3024 /* at this point, we NEED to wait, so we have to ensure */
3025 /* to pass a minimum nonzero value to the backend */
3026 if (expect_false (waittime < backend_mintime))
3027 waittime = backend_mintime;
2157 3028
2158 /* extra check because io_blocktime is commonly 0 */ 3029 /* extra check because io_blocktime is commonly 0 */
2159 if (expect_false (io_blocktime)) 3030 if (expect_false (io_blocktime))
2160 { 3031 {
2161 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3032 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2162 3033
2163 if (sleeptime > waittime - backend_fudge) 3034 if (sleeptime > waittime - backend_mintime)
2164 sleeptime = waittime - backend_fudge; 3035 sleeptime = waittime - backend_mintime;
2165 3036
2166 if (expect_true (sleeptime > 0.)) 3037 if (expect_true (sleeptime > 0.))
2167 { 3038 {
2168 ev_sleep (sleeptime); 3039 ev_sleep (sleeptime);
2169 waittime -= sleeptime; 3040 waittime -= sleeptime;
2170 } 3041 }
2171 } 3042 }
2172 } 3043 }
2173 3044
2174#if EV_MINIMAL < 2 3045#if EV_FEATURE_API
2175 ++loop_count; 3046 ++loop_count;
2176#endif 3047#endif
3048 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2177 backend_poll (EV_A_ waittime); 3049 backend_poll (EV_A_ waittime);
3050 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3051
3052 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3053
3054 if (pipe_write_skipped)
3055 {
3056 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3057 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3058 }
3059
2178 3060
2179 /* update ev_rt_now, do magic */ 3061 /* update ev_rt_now, do magic */
2180 time_update (EV_A_ waittime + sleeptime); 3062 time_update (EV_A_ waittime + sleeptime);
2181 } 3063 }
2182 3064
… …
2189#if EV_IDLE_ENABLE 3071#if EV_IDLE_ENABLE
2190 /* queue idle watchers unless other events are pending */ 3072 /* queue idle watchers unless other events are pending */
2191 idle_reify (EV_A); 3073 idle_reify (EV_A);
2192#endif 3074#endif
2193 3075
3076#if EV_CHECK_ENABLE
2194 /* queue check watchers, to be executed first */ 3077 /* queue check watchers, to be executed first */
2195 if (expect_false (checkcnt)) 3078 if (expect_false (checkcnt))
2196 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3079 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3080#endif
2197 3081
2198 EV_INVOKE_PENDING; 3082 EV_INVOKE_PENDING;
2199 } 3083 }
2200 while (expect_true ( 3084 while (expect_true (
2201 activecnt 3085 activecnt
2202 && !loop_done 3086 && !loop_done
2203 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3087 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2204 )); 3088 ));
2205 3089
2206 if (loop_done == EVUNLOOP_ONE) 3090 if (loop_done == EVBREAK_ONE)
2207 loop_done = EVUNLOOP_CANCEL; 3091 loop_done = EVBREAK_CANCEL;
2208 3092
2209#if EV_MINIMAL < 2 3093#if EV_FEATURE_API
2210 --loop_depth; 3094 --loop_depth;
2211#endif 3095#endif
2212} 3096}
2213 3097
2214void 3098void
2215ev_unloop (EV_P_ int how) 3099ev_break (EV_P_ int how)
2216{ 3100{
2217 loop_done = how; 3101 loop_done = how;
2218} 3102}
2219 3103
2220void 3104void
… …
2267inline_size void 3151inline_size void
2268wlist_del (WL *head, WL elem) 3152wlist_del (WL *head, WL elem)
2269{ 3153{
2270 while (*head) 3154 while (*head)
2271 { 3155 {
2272 if (*head == elem) 3156 if (expect_true (*head == elem))
2273 { 3157 {
2274 *head = elem->next; 3158 *head = elem->next;
2275 return; 3159 break;
2276 } 3160 }
2277 3161
2278 head = &(*head)->next; 3162 head = &(*head)->next;
2279 } 3163 }
2280} 3164}
… …
2340 3224
2341 if (expect_false (ev_is_active (w))) 3225 if (expect_false (ev_is_active (w)))
2342 return; 3226 return;
2343 3227
2344 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3228 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2345 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3229 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2346 3230
2347 EV_FREQUENT_CHECK; 3231 EV_FREQUENT_CHECK;
2348 3232
2349 ev_start (EV_A_ (W)w, 1); 3233 ev_start (EV_A_ (W)w, 1);
2350 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3234 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2351 wlist_add (&anfds[fd].head, (WL)w); 3235 wlist_add (&anfds[fd].head, (WL)w);
2352 3236
2353 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); 3237 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2354 w->events &= ~EV__IOFDSET; 3238 w->events &= ~EV__IOFDSET;
2355 3239
2356 EV_FREQUENT_CHECK; 3240 EV_FREQUENT_CHECK;
2357} 3241}
2358 3242
… …
2368 EV_FREQUENT_CHECK; 3252 EV_FREQUENT_CHECK;
2369 3253
2370 wlist_del (&anfds[w->fd].head, (WL)w); 3254 wlist_del (&anfds[w->fd].head, (WL)w);
2371 ev_stop (EV_A_ (W)w); 3255 ev_stop (EV_A_ (W)w);
2372 3256
2373 fd_change (EV_A_ w->fd, 1); 3257 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2374 3258
2375 EV_FREQUENT_CHECK; 3259 EV_FREQUENT_CHECK;
2376} 3260}
2377 3261
2378void noinline 3262void noinline
… …
2420 timers [active] = timers [timercnt + HEAP0]; 3304 timers [active] = timers [timercnt + HEAP0];
2421 adjustheap (timers, timercnt, active); 3305 adjustheap (timers, timercnt, active);
2422 } 3306 }
2423 } 3307 }
2424 3308
2425 EV_FREQUENT_CHECK;
2426
2427 ev_at (w) -= mn_now; 3309 ev_at (w) -= mn_now;
2428 3310
2429 ev_stop (EV_A_ (W)w); 3311 ev_stop (EV_A_ (W)w);
3312
3313 EV_FREQUENT_CHECK;
2430} 3314}
2431 3315
2432void noinline 3316void noinline
2433ev_timer_again (EV_P_ ev_timer *w) 3317ev_timer_again (EV_P_ ev_timer *w)
2434{ 3318{
2435 EV_FREQUENT_CHECK; 3319 EV_FREQUENT_CHECK;
3320
3321 clear_pending (EV_A_ (W)w);
2436 3322
2437 if (ev_is_active (w)) 3323 if (ev_is_active (w))
2438 { 3324 {
2439 if (w->repeat) 3325 if (w->repeat)
2440 { 3326 {
… …
2452 } 3338 }
2453 3339
2454 EV_FREQUENT_CHECK; 3340 EV_FREQUENT_CHECK;
2455} 3341}
2456 3342
3343ev_tstamp
3344ev_timer_remaining (EV_P_ ev_timer *w)
3345{
3346 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3347}
3348
2457#if EV_PERIODIC_ENABLE 3349#if EV_PERIODIC_ENABLE
2458void noinline 3350void noinline
2459ev_periodic_start (EV_P_ ev_periodic *w) 3351ev_periodic_start (EV_P_ ev_periodic *w)
2460{ 3352{
2461 if (expect_false (ev_is_active (w))) 3353 if (expect_false (ev_is_active (w)))
… …
2464 if (w->reschedule_cb) 3356 if (w->reschedule_cb)
2465 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3357 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2466 else if (w->interval) 3358 else if (w->interval)
2467 { 3359 {
2468 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3360 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2469 /* this formula differs from the one in periodic_reify because we do not always round up */ 3361 periodic_recalc (EV_A_ w);
2470 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2471 } 3362 }
2472 else 3363 else
2473 ev_at (w) = w->offset; 3364 ev_at (w) = w->offset;
2474 3365
2475 EV_FREQUENT_CHECK; 3366 EV_FREQUENT_CHECK;
… …
2507 periodics [active] = periodics [periodiccnt + HEAP0]; 3398 periodics [active] = periodics [periodiccnt + HEAP0];
2508 adjustheap (periodics, periodiccnt, active); 3399 adjustheap (periodics, periodiccnt, active);
2509 } 3400 }
2510 } 3401 }
2511 3402
2512 EV_FREQUENT_CHECK;
2513
2514 ev_stop (EV_A_ (W)w); 3403 ev_stop (EV_A_ (W)w);
3404
3405 EV_FREQUENT_CHECK;
2515} 3406}
2516 3407
2517void noinline 3408void noinline
2518ev_periodic_again (EV_P_ ev_periodic *w) 3409ev_periodic_again (EV_P_ ev_periodic *w)
2519{ 3410{
… …
2525 3416
2526#ifndef SA_RESTART 3417#ifndef SA_RESTART
2527# define SA_RESTART 0 3418# define SA_RESTART 0
2528#endif 3419#endif
2529 3420
3421#if EV_SIGNAL_ENABLE
3422
2530void noinline 3423void noinline
2531ev_signal_start (EV_P_ ev_signal *w) 3424ev_signal_start (EV_P_ ev_signal *w)
2532{ 3425{
2533#if EV_MULTIPLICITY
2534 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2535#endif
2536 if (expect_false (ev_is_active (w))) 3426 if (expect_false (ev_is_active (w)))
2537 return; 3427 return;
2538 3428
2539 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 3429 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2540 3430
2541 evpipe_init (EV_A); 3431#if EV_MULTIPLICITY
3432 assert (("libev: a signal must not be attached to two different loops",
3433 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2542 3434
2543 EV_FREQUENT_CHECK; 3435 signals [w->signum - 1].loop = EV_A;
3436#endif
2544 3437
3438 EV_FREQUENT_CHECK;
3439
3440#if EV_USE_SIGNALFD
3441 if (sigfd == -2)
2545 { 3442 {
2546#ifndef _WIN32 3443 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2547 sigset_t full, prev; 3444 if (sigfd < 0 && errno == EINVAL)
2548 sigfillset (&full); 3445 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2549 sigprocmask (SIG_SETMASK, &full, &prev);
2550#endif
2551 3446
2552 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 3447 if (sigfd >= 0)
3448 {
3449 fd_intern (sigfd); /* doing it twice will not hurt */
2553 3450
2554#ifndef _WIN32 3451 sigemptyset (&sigfd_set);
2555 sigprocmask (SIG_SETMASK, &prev, 0); 3452
2556#endif 3453 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3454 ev_set_priority (&sigfd_w, EV_MAXPRI);
3455 ev_io_start (EV_A_ &sigfd_w);
3456 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3457 }
2557 } 3458 }
3459
3460 if (sigfd >= 0)
3461 {
3462 /* TODO: check .head */
3463 sigaddset (&sigfd_set, w->signum);
3464 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3465
3466 signalfd (sigfd, &sigfd_set, 0);
3467 }
3468#endif
2558 3469
2559 ev_start (EV_A_ (W)w, 1); 3470 ev_start (EV_A_ (W)w, 1);
2560 wlist_add (&signals [w->signum - 1].head, (WL)w); 3471 wlist_add (&signals [w->signum - 1].head, (WL)w);
2561 3472
2562 if (!((WL)w)->next) 3473 if (!((WL)w)->next)
3474# if EV_USE_SIGNALFD
3475 if (sigfd < 0) /*TODO*/
3476# endif
2563 { 3477 {
2564#if _WIN32 3478# ifdef _WIN32
3479 evpipe_init (EV_A);
3480
2565 signal (w->signum, ev_sighandler); 3481 signal (w->signum, ev_sighandler);
2566#else 3482# else
2567 struct sigaction sa; 3483 struct sigaction sa;
3484
3485 evpipe_init (EV_A);
3486
2568 sa.sa_handler = ev_sighandler; 3487 sa.sa_handler = ev_sighandler;
2569 sigfillset (&sa.sa_mask); 3488 sigfillset (&sa.sa_mask);
2570 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3489 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2571 sigaction (w->signum, &sa, 0); 3490 sigaction (w->signum, &sa, 0);
3491
3492 if (origflags & EVFLAG_NOSIGMASK)
3493 {
3494 sigemptyset (&sa.sa_mask);
3495 sigaddset (&sa.sa_mask, w->signum);
3496 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3497 }
2572#endif 3498#endif
2573 } 3499 }
2574 3500
2575 EV_FREQUENT_CHECK; 3501 EV_FREQUENT_CHECK;
2576} 3502}
2577 3503
2578void noinline 3504void noinline
… …
2586 3512
2587 wlist_del (&signals [w->signum - 1].head, (WL)w); 3513 wlist_del (&signals [w->signum - 1].head, (WL)w);
2588 ev_stop (EV_A_ (W)w); 3514 ev_stop (EV_A_ (W)w);
2589 3515
2590 if (!signals [w->signum - 1].head) 3516 if (!signals [w->signum - 1].head)
3517 {
3518#if EV_MULTIPLICITY
3519 signals [w->signum - 1].loop = 0; /* unattach from signal */
3520#endif
3521#if EV_USE_SIGNALFD
3522 if (sigfd >= 0)
3523 {
3524 sigset_t ss;
3525
3526 sigemptyset (&ss);
3527 sigaddset (&ss, w->signum);
3528 sigdelset (&sigfd_set, w->signum);
3529
3530 signalfd (sigfd, &sigfd_set, 0);
3531 sigprocmask (SIG_UNBLOCK, &ss, 0);
3532 }
3533 else
3534#endif
2591 signal (w->signum, SIG_DFL); 3535 signal (w->signum, SIG_DFL);
3536 }
2592 3537
2593 EV_FREQUENT_CHECK; 3538 EV_FREQUENT_CHECK;
2594} 3539}
3540
3541#endif
3542
3543#if EV_CHILD_ENABLE
2595 3544
2596void 3545void
2597ev_child_start (EV_P_ ev_child *w) 3546ev_child_start (EV_P_ ev_child *w)
2598{ 3547{
2599#if EV_MULTIPLICITY 3548#if EV_MULTIPLICITY
… …
2603 return; 3552 return;
2604 3553
2605 EV_FREQUENT_CHECK; 3554 EV_FREQUENT_CHECK;
2606 3555
2607 ev_start (EV_A_ (W)w, 1); 3556 ev_start (EV_A_ (W)w, 1);
2608 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3557 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2609 3558
2610 EV_FREQUENT_CHECK; 3559 EV_FREQUENT_CHECK;
2611} 3560}
2612 3561
2613void 3562void
… …
2617 if (expect_false (!ev_is_active (w))) 3566 if (expect_false (!ev_is_active (w)))
2618 return; 3567 return;
2619 3568
2620 EV_FREQUENT_CHECK; 3569 EV_FREQUENT_CHECK;
2621 3570
2622 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3571 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2623 ev_stop (EV_A_ (W)w); 3572 ev_stop (EV_A_ (W)w);
2624 3573
2625 EV_FREQUENT_CHECK; 3574 EV_FREQUENT_CHECK;
2626} 3575}
3576
3577#endif
2627 3578
2628#if EV_STAT_ENABLE 3579#if EV_STAT_ENABLE
2629 3580
2630# ifdef _WIN32 3581# ifdef _WIN32
2631# undef lstat 3582# undef lstat
… …
2637#define MIN_STAT_INTERVAL 0.1074891 3588#define MIN_STAT_INTERVAL 0.1074891
2638 3589
2639static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3590static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2640 3591
2641#if EV_USE_INOTIFY 3592#if EV_USE_INOTIFY
2642# define EV_INOTIFY_BUFSIZE 8192 3593
3594/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3595# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2643 3596
2644static void noinline 3597static void noinline
2645infy_add (EV_P_ ev_stat *w) 3598infy_add (EV_P_ ev_stat *w)
2646{ 3599{
2647 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); 3600 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);
2648 3601
2649 if (w->wd < 0) 3602 if (w->wd >= 0)
3603 {
3604 struct statfs sfs;
3605
3606 /* now local changes will be tracked by inotify, but remote changes won't */
3607 /* unless the filesystem is known to be local, we therefore still poll */
3608 /* also do poll on <2.6.25, but with normal frequency */
3609
3610 if (!fs_2625)
3611 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3612 else if (!statfs (w->path, &sfs)
3613 && (sfs.f_type == 0x1373 /* devfs */
3614 || sfs.f_type == 0xEF53 /* ext2/3 */
3615 || sfs.f_type == 0x3153464a /* jfs */
3616 || sfs.f_type == 0x52654973 /* reiser3 */
3617 || sfs.f_type == 0x01021994 /* tempfs */
3618 || sfs.f_type == 0x58465342 /* xfs */))
3619 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3620 else
3621 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2650 { 3622 }
3623 else
3624 {
3625 /* can't use inotify, continue to stat */
2651 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3626 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2652 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2653 3627
2654 /* monitor some parent directory for speedup hints */ 3628 /* if path is not there, monitor some parent directory for speedup hints */
2655 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3629 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2656 /* but an efficiency issue only */ 3630 /* but an efficiency issue only */
2657 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3631 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2658 { 3632 {
2659 char path [4096]; 3633 char path [4096];
… …
2669 if (!pend || pend == path) 3643 if (!pend || pend == path)
2670 break; 3644 break;
2671 3645
2672 *pend = 0; 3646 *pend = 0;
2673 w->wd = inotify_add_watch (fs_fd, path, mask); 3647 w->wd = inotify_add_watch (fs_fd, path, mask);
2674 } 3648 }
2675 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3649 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2676 } 3650 }
2677 } 3651 }
2678 3652
2679 if (w->wd >= 0) 3653 if (w->wd >= 0)
2680 {
2681 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3654 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2682 3655
2683 /* now local changes will be tracked by inotify, but remote changes won't */ 3656 /* now re-arm timer, if required */
2684 /* unless the filesystem it known to be local, we therefore still poll */ 3657 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2685 /* also do poll on <2.6.25, but with normal frequency */
2686 struct statfs sfs;
2687
2688 if (fs_2625 && !statfs (w->path, &sfs))
2689 if (sfs.f_type == 0x1373 /* devfs */
2690 || sfs.f_type == 0xEF53 /* ext2/3 */
2691 || sfs.f_type == 0x3153464a /* jfs */
2692 || sfs.f_type == 0x52654973 /* reiser3 */
2693 || sfs.f_type == 0x01021994 /* tempfs */
2694 || sfs.f_type == 0x58465342 /* xfs */)
2695 return;
2696
2697 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2698 ev_timer_again (EV_A_ &w->timer); 3658 ev_timer_again (EV_A_ &w->timer);
2699 } 3659 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2700} 3660}
2701 3661
2702static void noinline 3662static void noinline
2703infy_del (EV_P_ ev_stat *w) 3663infy_del (EV_P_ ev_stat *w)
2704{ 3664{
… …
2707 3667
2708 if (wd < 0) 3668 if (wd < 0)
2709 return; 3669 return;
2710 3670
2711 w->wd = -2; 3671 w->wd = -2;
2712 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3672 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2713 wlist_del (&fs_hash [slot].head, (WL)w); 3673 wlist_del (&fs_hash [slot].head, (WL)w);
2714 3674
2715 /* remove this watcher, if others are watching it, they will rearm */ 3675 /* remove this watcher, if others are watching it, they will rearm */
2716 inotify_rm_watch (fs_fd, wd); 3676 inotify_rm_watch (fs_fd, wd);
2717} 3677}
… …
2719static void noinline 3679static void noinline
2720infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3680infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2721{ 3681{
2722 if (slot < 0) 3682 if (slot < 0)
2723 /* overflow, need to check for all hash slots */ 3683 /* overflow, need to check for all hash slots */
2724 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3684 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2725 infy_wd (EV_A_ slot, wd, ev); 3685 infy_wd (EV_A_ slot, wd, ev);
2726 else 3686 else
2727 { 3687 {
2728 WL w_; 3688 WL w_;
2729 3689
2730 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3690 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2731 { 3691 {
2732 ev_stat *w = (ev_stat *)w_; 3692 ev_stat *w = (ev_stat *)w_;
2733 w_ = w_->next; /* lets us remove this watcher and all before it */ 3693 w_ = w_->next; /* lets us remove this watcher and all before it */
2734 3694
2735 if (w->wd == wd || wd == -1) 3695 if (w->wd == wd || wd == -1)
2736 { 3696 {
2737 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3697 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2738 { 3698 {
2739 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3699 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2740 w->wd = -1; 3700 w->wd = -1;
2741 infy_add (EV_A_ w); /* re-add, no matter what */ 3701 infy_add (EV_A_ w); /* re-add, no matter what */
2742 } 3702 }
2743 3703
2744 stat_timer_cb (EV_A_ &w->timer, 0); 3704 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2749 3709
2750static void 3710static void
2751infy_cb (EV_P_ ev_io *w, int revents) 3711infy_cb (EV_P_ ev_io *w, int revents)
2752{ 3712{
2753 char buf [EV_INOTIFY_BUFSIZE]; 3713 char buf [EV_INOTIFY_BUFSIZE];
2754 struct inotify_event *ev = (struct inotify_event *)buf;
2755 int ofs; 3714 int ofs;
2756 int len = read (fs_fd, buf, sizeof (buf)); 3715 int len = read (fs_fd, buf, sizeof (buf));
2757 3716
2758 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3717 for (ofs = 0; ofs < len; )
3718 {
3719 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2759 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3720 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3721 ofs += sizeof (struct inotify_event) + ev->len;
3722 }
2760} 3723}
2761 3724
2762inline_size void 3725inline_size void ecb_cold
2763check_2625 (EV_P) 3726ev_check_2625 (EV_P)
2764{ 3727{
2765 /* kernels < 2.6.25 are borked 3728 /* kernels < 2.6.25 are borked
2766 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3729 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2767 */ 3730 */
2768 struct utsname buf; 3731 if (ev_linux_version () < 0x020619)
2769 int major, minor, micro;
2770
2771 if (uname (&buf))
2772 return; 3732 return;
2773 3733
2774 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2775 return;
2776
2777 if (major < 2
2778 || (major == 2 && minor < 6)
2779 || (major == 2 && minor == 6 && micro < 25))
2780 return;
2781
2782 fs_2625 = 1; 3734 fs_2625 = 1;
3735}
3736
3737inline_size int
3738infy_newfd (void)
3739{
3740#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3741 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3742 if (fd >= 0)
3743 return fd;
3744#endif
3745 return inotify_init ();
2783} 3746}
2784 3747
2785inline_size void 3748inline_size void
2786infy_init (EV_P) 3749infy_init (EV_P)
2787{ 3750{
2788 if (fs_fd != -2) 3751 if (fs_fd != -2)
2789 return; 3752 return;
2790 3753
2791 fs_fd = -1; 3754 fs_fd = -1;
2792 3755
2793 check_2625 (EV_A); 3756 ev_check_2625 (EV_A);
2794 3757
2795 fs_fd = inotify_init (); 3758 fs_fd = infy_newfd ();
2796 3759
2797 if (fs_fd >= 0) 3760 if (fs_fd >= 0)
2798 { 3761 {
3762 fd_intern (fs_fd);
2799 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3763 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2800 ev_set_priority (&fs_w, EV_MAXPRI); 3764 ev_set_priority (&fs_w, EV_MAXPRI);
2801 ev_io_start (EV_A_ &fs_w); 3765 ev_io_start (EV_A_ &fs_w);
3766 ev_unref (EV_A);
2802 } 3767 }
2803} 3768}
2804 3769
2805inline_size void 3770inline_size void
2806infy_fork (EV_P) 3771infy_fork (EV_P)
… …
2808 int slot; 3773 int slot;
2809 3774
2810 if (fs_fd < 0) 3775 if (fs_fd < 0)
2811 return; 3776 return;
2812 3777
3778 ev_ref (EV_A);
3779 ev_io_stop (EV_A_ &fs_w);
2813 close (fs_fd); 3780 close (fs_fd);
2814 fs_fd = inotify_init (); 3781 fs_fd = infy_newfd ();
2815 3782
3783 if (fs_fd >= 0)
3784 {
3785 fd_intern (fs_fd);
3786 ev_io_set (&fs_w, fs_fd, EV_READ);
3787 ev_io_start (EV_A_ &fs_w);
3788 ev_unref (EV_A);
3789 }
3790
2816 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3791 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2817 { 3792 {
2818 WL w_ = fs_hash [slot].head; 3793 WL w_ = fs_hash [slot].head;
2819 fs_hash [slot].head = 0; 3794 fs_hash [slot].head = 0;
2820 3795
2821 while (w_) 3796 while (w_)
… …
2826 w->wd = -1; 3801 w->wd = -1;
2827 3802
2828 if (fs_fd >= 0) 3803 if (fs_fd >= 0)
2829 infy_add (EV_A_ w); /* re-add, no matter what */ 3804 infy_add (EV_A_ w); /* re-add, no matter what */
2830 else 3805 else
3806 {
3807 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3808 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2831 ev_timer_again (EV_A_ &w->timer); 3809 ev_timer_again (EV_A_ &w->timer);
3810 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3811 }
2832 } 3812 }
2833 } 3813 }
2834} 3814}
2835 3815
2836#endif 3816#endif
… …
2853static void noinline 3833static void noinline
2854stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3834stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2855{ 3835{
2856 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3836 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2857 3837
2858 /* we copy this here each the time so that */ 3838 ev_statdata prev = w->attr;
2859 /* prev has the old value when the callback gets invoked */
2860 w->prev = w->attr;
2861 ev_stat_stat (EV_A_ w); 3839 ev_stat_stat (EV_A_ w);
2862 3840
2863 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3841 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2864 if ( 3842 if (
2865 w->prev.st_dev != w->attr.st_dev 3843 prev.st_dev != w->attr.st_dev
2866 || w->prev.st_ino != w->attr.st_ino 3844 || prev.st_ino != w->attr.st_ino
2867 || w->prev.st_mode != w->attr.st_mode 3845 || prev.st_mode != w->attr.st_mode
2868 || w->prev.st_nlink != w->attr.st_nlink 3846 || prev.st_nlink != w->attr.st_nlink
2869 || w->prev.st_uid != w->attr.st_uid 3847 || prev.st_uid != w->attr.st_uid
2870 || w->prev.st_gid != w->attr.st_gid 3848 || prev.st_gid != w->attr.st_gid
2871 || w->prev.st_rdev != w->attr.st_rdev 3849 || prev.st_rdev != w->attr.st_rdev
2872 || w->prev.st_size != w->attr.st_size 3850 || prev.st_size != w->attr.st_size
2873 || w->prev.st_atime != w->attr.st_atime 3851 || prev.st_atime != w->attr.st_atime
2874 || w->prev.st_mtime != w->attr.st_mtime 3852 || prev.st_mtime != w->attr.st_mtime
2875 || w->prev.st_ctime != w->attr.st_ctime 3853 || prev.st_ctime != w->attr.st_ctime
2876 ) { 3854 ) {
3855 /* we only update w->prev on actual differences */
3856 /* in case we test more often than invoke the callback, */
3857 /* to ensure that prev is always different to attr */
3858 w->prev = prev;
3859
2877 #if EV_USE_INOTIFY 3860 #if EV_USE_INOTIFY
2878 if (fs_fd >= 0) 3861 if (fs_fd >= 0)
2879 { 3862 {
2880 infy_del (EV_A_ w); 3863 infy_del (EV_A_ w);
2881 infy_add (EV_A_ w); 3864 infy_add (EV_A_ w);
… …
2906 3889
2907 if (fs_fd >= 0) 3890 if (fs_fd >= 0)
2908 infy_add (EV_A_ w); 3891 infy_add (EV_A_ w);
2909 else 3892 else
2910#endif 3893#endif
3894 {
2911 ev_timer_again (EV_A_ &w->timer); 3895 ev_timer_again (EV_A_ &w->timer);
3896 ev_unref (EV_A);
3897 }
2912 3898
2913 ev_start (EV_A_ (W)w, 1); 3899 ev_start (EV_A_ (W)w, 1);
2914 3900
2915 EV_FREQUENT_CHECK; 3901 EV_FREQUENT_CHECK;
2916} 3902}
… …
2925 EV_FREQUENT_CHECK; 3911 EV_FREQUENT_CHECK;
2926 3912
2927#if EV_USE_INOTIFY 3913#if EV_USE_INOTIFY
2928 infy_del (EV_A_ w); 3914 infy_del (EV_A_ w);
2929#endif 3915#endif
3916
3917 if (ev_is_active (&w->timer))
3918 {
3919 ev_ref (EV_A);
2930 ev_timer_stop (EV_A_ &w->timer); 3920 ev_timer_stop (EV_A_ &w->timer);
3921 }
2931 3922
2932 ev_stop (EV_A_ (W)w); 3923 ev_stop (EV_A_ (W)w);
2933 3924
2934 EV_FREQUENT_CHECK; 3925 EV_FREQUENT_CHECK;
2935} 3926}
… …
2980 3971
2981 EV_FREQUENT_CHECK; 3972 EV_FREQUENT_CHECK;
2982} 3973}
2983#endif 3974#endif
2984 3975
3976#if EV_PREPARE_ENABLE
2985void 3977void
2986ev_prepare_start (EV_P_ ev_prepare *w) 3978ev_prepare_start (EV_P_ ev_prepare *w)
2987{ 3979{
2988 if (expect_false (ev_is_active (w))) 3980 if (expect_false (ev_is_active (w)))
2989 return; 3981 return;
… …
3015 4007
3016 ev_stop (EV_A_ (W)w); 4008 ev_stop (EV_A_ (W)w);
3017 4009
3018 EV_FREQUENT_CHECK; 4010 EV_FREQUENT_CHECK;
3019} 4011}
4012#endif
3020 4013
4014#if EV_CHECK_ENABLE
3021void 4015void
3022ev_check_start (EV_P_ ev_check *w) 4016ev_check_start (EV_P_ ev_check *w)
3023{ 4017{
3024 if (expect_false (ev_is_active (w))) 4018 if (expect_false (ev_is_active (w)))
3025 return; 4019 return;
… …
3051 4045
3052 ev_stop (EV_A_ (W)w); 4046 ev_stop (EV_A_ (W)w);
3053 4047
3054 EV_FREQUENT_CHECK; 4048 EV_FREQUENT_CHECK;
3055} 4049}
4050#endif
3056 4051
3057#if EV_EMBED_ENABLE 4052#if EV_EMBED_ENABLE
3058void noinline 4053void noinline
3059ev_embed_sweep (EV_P_ ev_embed *w) 4054ev_embed_sweep (EV_P_ ev_embed *w)
3060{ 4055{
3061 ev_loop (w->other, EVLOOP_NONBLOCK); 4056 ev_run (w->other, EVRUN_NOWAIT);
3062} 4057}
3063 4058
3064static void 4059static void
3065embed_io_cb (EV_P_ ev_io *io, int revents) 4060embed_io_cb (EV_P_ ev_io *io, int revents)
3066{ 4061{
3067 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4062 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3068 4063
3069 if (ev_cb (w)) 4064 if (ev_cb (w))
3070 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4065 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3071 else 4066 else
3072 ev_loop (w->other, EVLOOP_NONBLOCK); 4067 ev_run (w->other, EVRUN_NOWAIT);
3073} 4068}
3074 4069
3075static void 4070static void
3076embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4071embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3077{ 4072{
3078 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4073 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3079 4074
3080 { 4075 {
3081 struct ev_loop *loop = w->other; 4076 EV_P = w->other;
3082 4077
3083 while (fdchangecnt) 4078 while (fdchangecnt)
3084 { 4079 {
3085 fd_reify (EV_A); 4080 fd_reify (EV_A);
3086 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4081 ev_run (EV_A_ EVRUN_NOWAIT);
3087 } 4082 }
3088 } 4083 }
3089} 4084}
3090 4085
3091static void 4086static void
… …
3094 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 4089 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3095 4090
3096 ev_embed_stop (EV_A_ w); 4091 ev_embed_stop (EV_A_ w);
3097 4092
3098 { 4093 {
3099 struct ev_loop *loop = w->other; 4094 EV_P = w->other;
3100 4095
3101 ev_loop_fork (EV_A); 4096 ev_loop_fork (EV_A);
3102 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4097 ev_run (EV_A_ EVRUN_NOWAIT);
3103 } 4098 }
3104 4099
3105 ev_embed_start (EV_A_ w); 4100 ev_embed_start (EV_A_ w);
3106} 4101}
3107 4102
… …
3118{ 4113{
3119 if (expect_false (ev_is_active (w))) 4114 if (expect_false (ev_is_active (w)))
3120 return; 4115 return;
3121 4116
3122 { 4117 {
3123 struct ev_loop *loop = w->other; 4118 EV_P = w->other;
3124 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4119 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3125 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4120 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3126 } 4121 }
3127 4122
3128 EV_FREQUENT_CHECK; 4123 EV_FREQUENT_CHECK;
… …
3155 4150
3156 ev_io_stop (EV_A_ &w->io); 4151 ev_io_stop (EV_A_ &w->io);
3157 ev_prepare_stop (EV_A_ &w->prepare); 4152 ev_prepare_stop (EV_A_ &w->prepare);
3158 ev_fork_stop (EV_A_ &w->fork); 4153 ev_fork_stop (EV_A_ &w->fork);
3159 4154
4155 ev_stop (EV_A_ (W)w);
4156
3160 EV_FREQUENT_CHECK; 4157 EV_FREQUENT_CHECK;
3161} 4158}
3162#endif 4159#endif
3163 4160
3164#if EV_FORK_ENABLE 4161#if EV_FORK_ENABLE
… …
3197 4194
3198 EV_FREQUENT_CHECK; 4195 EV_FREQUENT_CHECK;
3199} 4196}
3200#endif 4197#endif
3201 4198
4199#if EV_CLEANUP_ENABLE
4200void
4201ev_cleanup_start (EV_P_ ev_cleanup *w)
4202{
4203 if (expect_false (ev_is_active (w)))
4204 return;
4205
4206 EV_FREQUENT_CHECK;
4207
4208 ev_start (EV_A_ (W)w, ++cleanupcnt);
4209 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4210 cleanups [cleanupcnt - 1] = w;
4211
4212 /* cleanup watchers should never keep a refcount on the loop */
4213 ev_unref (EV_A);
4214 EV_FREQUENT_CHECK;
4215}
4216
4217void
4218ev_cleanup_stop (EV_P_ ev_cleanup *w)
4219{
4220 clear_pending (EV_A_ (W)w);
4221 if (expect_false (!ev_is_active (w)))
4222 return;
4223
4224 EV_FREQUENT_CHECK;
4225 ev_ref (EV_A);
4226
4227 {
4228 int active = ev_active (w);
4229
4230 cleanups [active - 1] = cleanups [--cleanupcnt];
4231 ev_active (cleanups [active - 1]) = active;
4232 }
4233
4234 ev_stop (EV_A_ (W)w);
4235
4236 EV_FREQUENT_CHECK;
4237}
4238#endif
4239
3202#if EV_ASYNC_ENABLE 4240#if EV_ASYNC_ENABLE
3203void 4241void
3204ev_async_start (EV_P_ ev_async *w) 4242ev_async_start (EV_P_ ev_async *w)
3205{ 4243{
3206 if (expect_false (ev_is_active (w))) 4244 if (expect_false (ev_is_active (w)))
3207 return; 4245 return;
3208 4246
4247 w->sent = 0;
4248
3209 evpipe_init (EV_A); 4249 evpipe_init (EV_A);
3210 4250
3211 EV_FREQUENT_CHECK; 4251 EV_FREQUENT_CHECK;
3212 4252
3213 ev_start (EV_A_ (W)w, ++asynccnt); 4253 ev_start (EV_A_ (W)w, ++asynccnt);
… …
3240 4280
3241void 4281void
3242ev_async_send (EV_P_ ev_async *w) 4282ev_async_send (EV_P_ ev_async *w)
3243{ 4283{
3244 w->sent = 1; 4284 w->sent = 1;
3245 evpipe_write (EV_A_ &gotasync); 4285 evpipe_write (EV_A_ &async_pending);
3246} 4286}
3247#endif 4287#endif
3248 4288
3249/*****************************************************************************/ 4289/*****************************************************************************/
3250 4290
… …
3290{ 4330{
3291 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4331 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3292 4332
3293 if (expect_false (!once)) 4333 if (expect_false (!once))
3294 { 4334 {
3295 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4335 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3296 return; 4336 return;
3297 } 4337 }
3298 4338
3299 once->cb = cb; 4339 once->cb = cb;
3300 once->arg = arg; 4340 once->arg = arg;
… …
3315} 4355}
3316 4356
3317/*****************************************************************************/ 4357/*****************************************************************************/
3318 4358
3319#if EV_WALK_ENABLE 4359#if EV_WALK_ENABLE
3320void 4360void ecb_cold
3321ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4361ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3322{ 4362{
3323 int i, j; 4363 int i, j;
3324 ev_watcher_list *wl, *wn; 4364 ev_watcher_list *wl, *wn;
3325 4365
… …
3369 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4409 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3370#endif 4410#endif
3371 4411
3372#if EV_IDLE_ENABLE 4412#if EV_IDLE_ENABLE
3373 if (types & EV_IDLE) 4413 if (types & EV_IDLE)
3374 for (j = NUMPRI; i--; ) 4414 for (j = NUMPRI; j--; )
3375 for (i = idlecnt [j]; i--; ) 4415 for (i = idlecnt [j]; i--; )
3376 cb (EV_A_ EV_IDLE, idles [j][i]); 4416 cb (EV_A_ EV_IDLE, idles [j][i]);
3377#endif 4417#endif
3378 4418
3379#if EV_FORK_ENABLE 4419#if EV_FORK_ENABLE
… …
3387 if (types & EV_ASYNC) 4427 if (types & EV_ASYNC)
3388 for (i = asynccnt; i--; ) 4428 for (i = asynccnt; i--; )
3389 cb (EV_A_ EV_ASYNC, asyncs [i]); 4429 cb (EV_A_ EV_ASYNC, asyncs [i]);
3390#endif 4430#endif
3391 4431
4432#if EV_PREPARE_ENABLE
3392 if (types & EV_PREPARE) 4433 if (types & EV_PREPARE)
3393 for (i = preparecnt; i--; ) 4434 for (i = preparecnt; i--; )
3394#if EV_EMBED_ENABLE 4435# if EV_EMBED_ENABLE
3395 if (ev_cb (prepares [i]) != embed_prepare_cb) 4436 if (ev_cb (prepares [i]) != embed_prepare_cb)
3396#endif 4437# endif
3397 cb (EV_A_ EV_PREPARE, prepares [i]); 4438 cb (EV_A_ EV_PREPARE, prepares [i]);
4439#endif
3398 4440
4441#if EV_CHECK_ENABLE
3399 if (types & EV_CHECK) 4442 if (types & EV_CHECK)
3400 for (i = checkcnt; i--; ) 4443 for (i = checkcnt; i--; )
3401 cb (EV_A_ EV_CHECK, checks [i]); 4444 cb (EV_A_ EV_CHECK, checks [i]);
4445#endif
3402 4446
4447#if EV_SIGNAL_ENABLE
3403 if (types & EV_SIGNAL) 4448 if (types & EV_SIGNAL)
3404 for (i = 0; i < signalmax; ++i) 4449 for (i = 0; i < EV_NSIG - 1; ++i)
3405 for (wl = signals [i].head; wl; ) 4450 for (wl = signals [i].head; wl; )
3406 { 4451 {
3407 wn = wl->next; 4452 wn = wl->next;
3408 cb (EV_A_ EV_SIGNAL, wl); 4453 cb (EV_A_ EV_SIGNAL, wl);
3409 wl = wn; 4454 wl = wn;
3410 } 4455 }
4456#endif
3411 4457
4458#if EV_CHILD_ENABLE
3412 if (types & EV_CHILD) 4459 if (types & EV_CHILD)
3413 for (i = EV_PID_HASHSIZE; i--; ) 4460 for (i = (EV_PID_HASHSIZE); i--; )
3414 for (wl = childs [i]; wl; ) 4461 for (wl = childs [i]; wl; )
3415 { 4462 {
3416 wn = wl->next; 4463 wn = wl->next;
3417 cb (EV_A_ EV_CHILD, wl); 4464 cb (EV_A_ EV_CHILD, wl);
3418 wl = wn; 4465 wl = wn;
3419 } 4466 }
4467#endif
3420/* EV_STAT 0x00001000 /* stat data changed */ 4468/* EV_STAT 0x00001000 /* stat data changed */
3421/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4469/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3422} 4470}
3423#endif 4471#endif
3424 4472
3425#if EV_MULTIPLICITY 4473#if EV_MULTIPLICITY
3426 #include "ev_wrap.h" 4474 #include "ev_wrap.h"
3427#endif 4475#endif
3428 4476
3429#ifdef __cplusplus
3430}
3431#endif
3432

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