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Comparing libev/ev.c (file contents):
Revision 1.293 by root, Mon Jun 29 18:46:52 2009 UTC vs.
Revision 1.411 by root, Tue Feb 21 04:34:02 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
960#endif
961
962#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
963
964#if EV_MINPRI == EV_MAXPRI
965# define ABSPRI(w) (((W)w), 0)
392#else 966#else
393# define inline_speed static inline
394#endif
395
396#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
397#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 967# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
968#endif
398 969
399#define EMPTY /* required for microsofts broken pseudo-c compiler */ 970#define EMPTY /* required for microsofts broken pseudo-c compiler */
400#define EMPTY2(a,b) /* used to suppress some warnings */ 971#define EMPTY2(a,b) /* used to suppress some warnings */
401 972
402typedef ev_watcher *W; 973typedef ev_watcher *W;
… …
406#define ev_active(w) ((W)(w))->active 977#define ev_active(w) ((W)(w))->active
407#define ev_at(w) ((WT)(w))->at 978#define ev_at(w) ((WT)(w))->at
408 979
409#if EV_USE_REALTIME 980#if EV_USE_REALTIME
410/* 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 */
411/* giving it a reasonably high chance of working on typical architetcures */ 982/* giving it a reasonably high chance of working on typical architectures */
412static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 983static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
413#endif 984#endif
414 985
415#if EV_USE_MONOTONIC 986#if EV_USE_MONOTONIC
416static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 987static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
417#endif 988#endif
418 989
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
419#ifdef _WIN32 1000#ifdef _WIN32
420# include "ev_win32.c" 1001# include "ev_win32.c"
421#endif 1002#endif
422 1003
423/*****************************************************************************/ 1004/*****************************************************************************/
424 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
425static void (*syserr_cb)(const char *msg); 1104static void (*syserr_cb)(const char *msg);
426 1105
427void 1106void ecb_cold
428ev_set_syserr_cb (void (*cb)(const char *msg)) 1107ev_set_syserr_cb (void (*cb)(const char *msg))
429{ 1108{
430 syserr_cb = cb; 1109 syserr_cb = cb;
431} 1110}
432 1111
433static void noinline 1112static void noinline ecb_cold
434ev_syserr (const char *msg) 1113ev_syserr (const char *msg)
435{ 1114{
436 if (!msg) 1115 if (!msg)
437 msg = "(libev) system error"; 1116 msg = "(libev) system error";
438 1117
439 if (syserr_cb) 1118 if (syserr_cb)
440 syserr_cb (msg); 1119 syserr_cb (msg);
441 else 1120 else
442 { 1121 {
1122#if EV_AVOID_STDIO
1123 ev_printerr (msg);
1124 ev_printerr (": ");
1125 ev_printerr (strerror (errno));
1126 ev_printerr ("\n");
1127#else
443 perror (msg); 1128 perror (msg);
1129#endif
444 abort (); 1130 abort ();
445 } 1131 }
446} 1132}
447 1133
448static void * 1134static void *
449ev_realloc_emul (void *ptr, long size) 1135ev_realloc_emul (void *ptr, long size)
450{ 1136{
1137#if __GLIBC__
1138 return realloc (ptr, size);
1139#else
451 /* some systems, notably openbsd and darwin, fail to properly 1140 /* some systems, notably openbsd and darwin, fail to properly
452 * 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
453 * the single unix specification, so work around them here. 1142 * the single unix specification, so work around them here.
454 */ 1143 */
455 1144
456 if (size) 1145 if (size)
457 return realloc (ptr, size); 1146 return realloc (ptr, size);
458 1147
459 free (ptr); 1148 free (ptr);
460 return 0; 1149 return 0;
1150#endif
461} 1151}
462 1152
463static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1153static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
464 1154
465void 1155void ecb_cold
466ev_set_allocator (void *(*cb)(void *ptr, long size)) 1156ev_set_allocator (void *(*cb)(void *ptr, long size))
467{ 1157{
468 alloc = cb; 1158 alloc = cb;
469} 1159}
470 1160
… …
473{ 1163{
474 ptr = alloc (ptr, size); 1164 ptr = alloc (ptr, size);
475 1165
476 if (!ptr && size) 1166 if (!ptr && size)
477 { 1167 {
1168#if EV_AVOID_STDIO
1169 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1170#else
478 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1171 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1172#endif
479 abort (); 1173 abort ();
480 } 1174 }
481 1175
482 return ptr; 1176 return ptr;
483} 1177}
… …
485#define ev_malloc(size) ev_realloc (0, (size)) 1179#define ev_malloc(size) ev_realloc (0, (size))
486#define ev_free(ptr) ev_realloc ((ptr), 0) 1180#define ev_free(ptr) ev_realloc ((ptr), 0)
487 1181
488/*****************************************************************************/ 1182/*****************************************************************************/
489 1183
1184/* set in reify when reification needed */
1185#define EV_ANFD_REIFY 1
1186
490/* file descriptor info structure */ 1187/* file descriptor info structure */
491typedef struct 1188typedef struct
492{ 1189{
493 WL head; 1190 WL head;
494 unsigned char events; /* the events watched for */ 1191 unsigned char events; /* the events watched for */
495 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) */
496 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 */
497 unsigned char unused; 1194 unsigned char unused;
498#if EV_USE_EPOLL 1195#if EV_USE_EPOLL
499 unsigned int egen; /* generation counter to counter epoll bugs */ 1196 unsigned int egen; /* generation counter to counter epoll bugs */
500#endif 1197#endif
501#if EV_SELECT_IS_WINSOCKET 1198#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
502 SOCKET handle; 1199 SOCKET handle;
1200#endif
1201#if EV_USE_IOCP
1202 OVERLAPPED or, ow;
503#endif 1203#endif
504} ANFD; 1204} ANFD;
505 1205
506/* stores the pending event set for a given watcher */ 1206/* stores the pending event set for a given watcher */
507typedef struct 1207typedef struct
… …
549 #undef VAR 1249 #undef VAR
550 }; 1250 };
551 #include "ev_wrap.h" 1251 #include "ev_wrap.h"
552 1252
553 static struct ev_loop default_loop_struct; 1253 static struct ev_loop default_loop_struct;
554 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 */
555 1255
556#else 1256#else
557 1257
558 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 */
559 #define VAR(name,decl) static decl; 1259 #define VAR(name,decl) static decl;
560 #include "ev_vars.h" 1260 #include "ev_vars.h"
561 #undef VAR 1261 #undef VAR
562 1262
563 static int ev_default_loop_ptr; 1263 static int ev_default_loop_ptr;
564 1264
565#endif 1265#endif
566 1266
1267#if EV_FEATURE_API
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)
1270# define EV_INVOKE_PENDING invoke_cb (EV_A)
1271#else
1272# define EV_RELEASE_CB (void)0
1273# define EV_ACQUIRE_CB (void)0
1274# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
1275#endif
1276
1277#define EVBREAK_RECURSE 0x80
1278
567/*****************************************************************************/ 1279/*****************************************************************************/
568 1280
569#ifndef EV_HAVE_EV_TIME 1281#ifndef EV_HAVE_EV_TIME
570ev_tstamp 1282ev_tstamp
571ev_time (void) 1283ev_time (void)
… …
614 if (delay > 0.) 1326 if (delay > 0.)
615 { 1327 {
616#if EV_USE_NANOSLEEP 1328#if EV_USE_NANOSLEEP
617 struct timespec ts; 1329 struct timespec ts;
618 1330
619 ts.tv_sec = (time_t)delay; 1331 EV_TS_SET (ts, delay);
620 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
621
622 nanosleep (&ts, 0); 1332 nanosleep (&ts, 0);
623#elif defined(_WIN32) 1333#elif defined(_WIN32)
624 Sleep ((unsigned long)(delay * 1e3)); 1334 Sleep ((unsigned long)(delay * 1e3));
625#else 1335#else
626 struct timeval tv; 1336 struct timeval tv;
627 1337
628 tv.tv_sec = (time_t)delay;
629 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
630
631 /* 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 */
632 /* somehting not guaranteed by newer posix versions, but guaranteed */ 1339 /* something not guaranteed by newer posix versions, but guaranteed */
633 /* by older ones */ 1340 /* by older ones */
1341 EV_TV_SET (tv, delay);
634 select (0, 0, 0, 0, &tv); 1342 select (0, 0, 0, 0, &tv);
635#endif 1343#endif
636 } 1344 }
637} 1345}
638 1346
639/*****************************************************************************/ 1347/*****************************************************************************/
640 1348
641#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 */
642 1350
643/* find a suitable new size for the given array, */ 1351/* find a suitable new size for the given array, */
644/* hopefully by rounding to a ncie-to-malloc size */ 1352/* hopefully by rounding to a nice-to-malloc size */
645inline_size int 1353inline_size int
646array_nextsize (int elem, int cur, int cnt) 1354array_nextsize (int elem, int cur, int cnt)
647{ 1355{
648 int ncur = cur + 1; 1356 int ncur = cur + 1;
649 1357
650 do 1358 do
651 ncur <<= 1; 1359 ncur <<= 1;
652 while (cnt > ncur); 1360 while (cnt > ncur);
653 1361
654 /* 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 */
655 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1363 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
656 { 1364 {
657 ncur *= elem; 1365 ncur *= elem;
658 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);
659 ncur = ncur - sizeof (void *) * 4; 1367 ncur = ncur - sizeof (void *) * 4;
… …
661 } 1369 }
662 1370
663 return ncur; 1371 return ncur;
664} 1372}
665 1373
666static noinline void * 1374static void * noinline ecb_cold
667array_realloc (int elem, void *base, int *cur, int cnt) 1375array_realloc (int elem, void *base, int *cur, int cnt)
668{ 1376{
669 *cur = array_nextsize (elem, *cur, cnt); 1377 *cur = array_nextsize (elem, *cur, cnt);
670 return ev_realloc (base, elem * *cur); 1378 return ev_realloc (base, elem * *cur);
671} 1379}
… …
674 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1382 memset ((void *)(base), 0, sizeof (*(base)) * (count))
675 1383
676#define array_needsize(type,base,cur,cnt,init) \ 1384#define array_needsize(type,base,cur,cnt,init) \
677 if (expect_false ((cnt) > (cur))) \ 1385 if (expect_false ((cnt) > (cur))) \
678 { \ 1386 { \
679 int ocur_ = (cur); \ 1387 int ecb_unused ocur_ = (cur); \
680 (base) = (type *)array_realloc \ 1388 (base) = (type *)array_realloc \
681 (sizeof (type), (base), &(cur), (cnt)); \ 1389 (sizeof (type), (base), &(cur), (cnt)); \
682 init ((base) + (ocur_), (cur) - ocur_); \ 1390 init ((base) + (ocur_), (cur) - ocur_); \
683 } 1391 }
684 1392
… …
745} 1453}
746 1454
747/*****************************************************************************/ 1455/*****************************************************************************/
748 1456
749inline_speed void 1457inline_speed void
750fd_event (EV_P_ int fd, int revents) 1458fd_event_nocheck (EV_P_ int fd, int revents)
751{ 1459{
752 ANFD *anfd = anfds + fd; 1460 ANFD *anfd = anfds + fd;
753 ev_io *w; 1461 ev_io *w;
754 1462
755 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)
… …
759 if (ev) 1467 if (ev)
760 ev_feed_event (EV_A_ (W)w, ev); 1468 ev_feed_event (EV_A_ (W)w, ev);
761 } 1469 }
762} 1470}
763 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
764void 1483void
765ev_feed_fd_event (EV_P_ int fd, int revents) 1484ev_feed_fd_event (EV_P_ int fd, int revents)
766{ 1485{
767 if (fd >= 0 && fd < anfdmax) 1486 if (fd >= 0 && fd < anfdmax)
768 fd_event (EV_A_ fd, revents); 1487 fd_event_nocheck (EV_A_ fd, revents);
769} 1488}
770 1489
771/* make sure the external fd watch events are in-sync */ 1490/* make sure the external fd watch events are in-sync */
772/* with the kernel/libev internal state */ 1491/* with the kernel/libev internal state */
773inline_size void 1492inline_size void
774fd_reify (EV_P) 1493fd_reify (EV_P)
775{ 1494{
776 int i; 1495 int i;
777 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
778 for (i = 0; i < fdchangecnt; ++i) 1522 for (i = 0; i < fdchangecnt; ++i)
779 { 1523 {
780 int fd = fdchanges [i]; 1524 int fd = fdchanges [i];
781 ANFD *anfd = anfds + fd; 1525 ANFD *anfd = anfds + fd;
782 ev_io *w; 1526 ev_io *w;
783 1527
784 unsigned char events = 0; 1528 unsigned char o_events = anfd->events;
1529 unsigned char o_reify = anfd->reify;
785 1530
786 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1531 anfd->reify = 0;
787 events |= (unsigned char)w->events;
788 1532
789#if EV_SELECT_IS_WINSOCKET 1533 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
790 if (events)
791 { 1534 {
792 unsigned long arg; 1535 anfd->events = 0;
793 #ifdef EV_FD_TO_WIN32_HANDLE 1536
794 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1537 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
795 #else 1538 anfd->events |= (unsigned char)w->events;
796 anfd->handle = _get_osfhandle (fd); 1539
797 #endif 1540 if (o_events != anfd->events)
798 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1541 o_reify = EV__IOFDSET; /* actually |= */
799 } 1542 }
800#endif
801 1543
802 { 1544 if (o_reify & EV__IOFDSET)
803 unsigned char o_events = anfd->events;
804 unsigned char o_reify = anfd->reify;
805
806 anfd->reify = 0;
807 anfd->events = events;
808
809 if (o_events != events || o_reify & EV__IOFDSET)
810 backend_modify (EV_A_ fd, o_events, events); 1545 backend_modify (EV_A_ fd, o_events, anfd->events);
811 }
812 } 1546 }
813 1547
814 fdchangecnt = 0; 1548 fdchangecnt = 0;
815} 1549}
816 1550
… …
828 fdchanges [fdchangecnt - 1] = fd; 1562 fdchanges [fdchangecnt - 1] = fd;
829 } 1563 }
830} 1564}
831 1565
832/* 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 */
833inline_speed void 1567inline_speed void ecb_cold
834fd_kill (EV_P_ int fd) 1568fd_kill (EV_P_ int fd)
835{ 1569{
836 ev_io *w; 1570 ev_io *w;
837 1571
838 while ((w = (ev_io *)anfds [fd].head)) 1572 while ((w = (ev_io *)anfds [fd].head))
… …
840 ev_io_stop (EV_A_ w); 1574 ev_io_stop (EV_A_ w);
841 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);
842 } 1576 }
843} 1577}
844 1578
845/* check whether the given fd is atcually valid, for error recovery */ 1579/* check whether the given fd is actually valid, for error recovery */
846inline_size int 1580inline_size int ecb_cold
847fd_valid (int fd) 1581fd_valid (int fd)
848{ 1582{
849#ifdef _WIN32 1583#ifdef _WIN32
850 return _get_osfhandle (fd) != -1; 1584 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
851#else 1585#else
852 return fcntl (fd, F_GETFD) != -1; 1586 return fcntl (fd, F_GETFD) != -1;
853#endif 1587#endif
854} 1588}
855 1589
856/* called on EBADF to verify fds */ 1590/* called on EBADF to verify fds */
857static void noinline 1591static void noinline ecb_cold
858fd_ebadf (EV_P) 1592fd_ebadf (EV_P)
859{ 1593{
860 int fd; 1594 int fd;
861 1595
862 for (fd = 0; fd < anfdmax; ++fd) 1596 for (fd = 0; fd < anfdmax; ++fd)
… …
864 if (!fd_valid (fd) && errno == EBADF) 1598 if (!fd_valid (fd) && errno == EBADF)
865 fd_kill (EV_A_ fd); 1599 fd_kill (EV_A_ fd);
866} 1600}
867 1601
868/* 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 */
869static void noinline 1603static void noinline ecb_cold
870fd_enomem (EV_P) 1604fd_enomem (EV_P)
871{ 1605{
872 int fd; 1606 int fd;
873 1607
874 for (fd = anfdmax; fd--; ) 1608 for (fd = anfdmax; fd--; )
875 if (anfds [fd].events) 1609 if (anfds [fd].events)
876 { 1610 {
877 fd_kill (EV_A_ fd); 1611 fd_kill (EV_A_ fd);
878 return; 1612 break;
879 } 1613 }
880} 1614}
881 1615
882/* 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 */
883static void noinline 1617static void noinline
… …
888 for (fd = 0; fd < anfdmax; ++fd) 1622 for (fd = 0; fd < anfdmax; ++fd)
889 if (anfds [fd].events) 1623 if (anfds [fd].events)
890 { 1624 {
891 anfds [fd].events = 0; 1625 anfds [fd].events = 0;
892 anfds [fd].emask = 0; 1626 anfds [fd].emask = 0;
893 fd_change (EV_A_ fd, EV__IOFDSET | 1); 1627 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
894 } 1628 }
895} 1629}
896 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
897/*****************************************************************************/ 1645/*****************************************************************************/
898 1646
899/* 1647/*
900 * 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
901 * 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
902 * the branching factor of the d-tree. 1650 * the branching factor of the d-tree.
903 */ 1651 */
904 1652
905/* 1653/*
… …
973 1721
974 for (;;) 1722 for (;;)
975 { 1723 {
976 int c = k << 1; 1724 int c = k << 1;
977 1725
978 if (c > N + HEAP0 - 1) 1726 if (c >= N + HEAP0)
979 break; 1727 break;
980 1728
981 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])
982 ? 1 : 0; 1730 ? 1 : 0;
983 1731
… …
1019 1767
1020/* move an element suitably so it is in a correct place */ 1768/* move an element suitably so it is in a correct place */
1021inline_size void 1769inline_size void
1022adjustheap (ANHE *heap, int N, int k) 1770adjustheap (ANHE *heap, int N, int k)
1023{ 1771{
1024 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)]))
1025 upheap (heap, k); 1773 upheap (heap, k);
1026 else 1774 else
1027 downheap (heap, N, k); 1775 downheap (heap, N, k);
1028} 1776}
1029 1777
… …
1042/*****************************************************************************/ 1790/*****************************************************************************/
1043 1791
1044/* associate signal watchers to a signal signal */ 1792/* associate signal watchers to a signal signal */
1045typedef struct 1793typedef struct
1046{ 1794{
1795 EV_ATOMIC_T pending;
1796#if EV_MULTIPLICITY
1797 EV_P;
1798#endif
1047 WL head; 1799 WL head;
1048 EV_ATOMIC_T gotsig;
1049} ANSIG; 1800} ANSIG;
1050 1801
1051static ANSIG *signals; 1802static ANSIG signals [EV_NSIG - 1];
1052static int signalmax;
1053
1054static EV_ATOMIC_T gotsig;
1055 1803
1056/*****************************************************************************/ 1804/*****************************************************************************/
1057 1805
1058/* used to prepare libev internal fd's */ 1806#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1059/* this is not fork-safe */
1060inline_speed void
1061fd_intern (int fd)
1062{
1063#ifdef _WIN32
1064 unsigned long arg = 1;
1065 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1066#else
1067 fcntl (fd, F_SETFD, FD_CLOEXEC);
1068 fcntl (fd, F_SETFL, O_NONBLOCK);
1069#endif
1070}
1071 1807
1072static void noinline 1808static void noinline ecb_cold
1073evpipe_init (EV_P) 1809evpipe_init (EV_P)
1074{ 1810{
1075 if (!ev_is_active (&pipe_w)) 1811 if (!ev_is_active (&pipe_w))
1076 { 1812 {
1077#if EV_USE_EVENTFD 1813# if EV_USE_EVENTFD
1814 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1815 if (evfd < 0 && errno == EINVAL)
1078 if ((evfd = eventfd (0, 0)) >= 0) 1816 evfd = eventfd (0, 0);
1817
1818 if (evfd >= 0)
1079 { 1819 {
1080 evpipe [0] = -1; 1820 evpipe [0] = -1;
1081 fd_intern (evfd); 1821 fd_intern (evfd); /* doing it twice doesn't hurt */
1082 ev_io_set (&pipe_w, evfd, EV_READ); 1822 ev_io_set (&pipe_w, evfd, EV_READ);
1083 } 1823 }
1084 else 1824 else
1085#endif 1825# endif
1086 { 1826 {
1087 while (pipe (evpipe)) 1827 while (pipe (evpipe))
1088 ev_syserr ("(libev) error creating signal/async pipe"); 1828 ev_syserr ("(libev) error creating signal/async pipe");
1089 1829
1090 fd_intern (evpipe [0]); 1830 fd_intern (evpipe [0]);
… …
1095 ev_io_start (EV_A_ &pipe_w); 1835 ev_io_start (EV_A_ &pipe_w);
1096 ev_unref (EV_A); /* watcher should not keep loop alive */ 1836 ev_unref (EV_A); /* watcher should not keep loop alive */
1097 } 1837 }
1098} 1838}
1099 1839
1100inline_size void 1840inline_speed void
1101evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1841evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1102{ 1842{
1103 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)
1104 { 1855 {
1856 int old_errno;
1857
1858 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1859
1105 int old_errno = errno; /* save errno because write might clobber it */ 1860 old_errno = errno; /* save errno because write will clobber it */
1106
1107 *flag = 1;
1108 1861
1109#if EV_USE_EVENTFD 1862#if EV_USE_EVENTFD
1110 if (evfd >= 0) 1863 if (evfd >= 0)
1111 { 1864 {
1112 uint64_t counter = 1; 1865 uint64_t counter = 1;
1113 write (evfd, &counter, sizeof (uint64_t)); 1866 write (evfd, &counter, sizeof (uint64_t));
1114 } 1867 }
1115 else 1868 else
1116#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. */
1876 /* it might be that your problem is that your environment needs EV_USE_WSASOCKET */
1877 /* check the ev documentation on how to use this flag */
1117 write (evpipe [1], &old_errno, 1); 1878 write (evpipe [1], &(evpipe [1]), 1);
1879 }
1118 1880
1119 errno = old_errno; 1881 errno = old_errno;
1120 } 1882 }
1121} 1883}
1122 1884
1123/* called whenever the libev signal pipe */ 1885/* called whenever the libev signal pipe */
1124/* got some events (signal, async) */ 1886/* got some events (signal, async) */
1125static void 1887static void
1126pipecb (EV_P_ ev_io *iow, int revents) 1888pipecb (EV_P_ ev_io *iow, int revents)
1127{ 1889{
1890 int i;
1891
1892 if (revents & EV_READ)
1893 {
1128#if EV_USE_EVENTFD 1894#if EV_USE_EVENTFD
1129 if (evfd >= 0) 1895 if (evfd >= 0)
1130 { 1896 {
1131 uint64_t counter; 1897 uint64_t counter;
1132 read (evfd, &counter, sizeof (uint64_t)); 1898 read (evfd, &counter, sizeof (uint64_t));
1133 } 1899 }
1134 else 1900 else
1135#endif 1901#endif
1136 { 1902 {
1137 char dummy; 1903 char dummy;
1904 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1138 read (evpipe [0], &dummy, 1); 1905 read (evpipe [0], &dummy, 1);
1906 }
1907 }
1908
1909 pipe_write_skipped = 0;
1910
1911#if EV_SIGNAL_ENABLE
1912 if (sig_pending)
1139 } 1913 {
1914 sig_pending = 0;
1140 1915
1141 if (gotsig && ev_is_default_loop (EV_A)) 1916 for (i = EV_NSIG - 1; i--; )
1142 { 1917 if (expect_false (signals [i].pending))
1143 int signum;
1144 gotsig = 0;
1145
1146 for (signum = signalmax; signum--; )
1147 if (signals [signum].gotsig)
1148 ev_feed_signal_event (EV_A_ signum + 1); 1918 ev_feed_signal_event (EV_A_ i + 1);
1149 } 1919 }
1920#endif
1150 1921
1151#if EV_ASYNC_ENABLE 1922#if EV_ASYNC_ENABLE
1152 if (gotasync) 1923 if (async_pending)
1153 { 1924 {
1154 int i; 1925 async_pending = 0;
1155 gotasync = 0;
1156 1926
1157 for (i = asynccnt; i--; ) 1927 for (i = asynccnt; i--; )
1158 if (asyncs [i]->sent) 1928 if (asyncs [i]->sent)
1159 { 1929 {
1160 asyncs [i]->sent = 0; 1930 asyncs [i]->sent = 0;
… …
1164#endif 1934#endif
1165} 1935}
1166 1936
1167/*****************************************************************************/ 1937/*****************************************************************************/
1168 1938
1939void
1940ev_feed_signal (int signum)
1941{
1942#if EV_MULTIPLICITY
1943 EV_P = signals [signum - 1].loop;
1944
1945 if (!EV_A)
1946 return;
1947#endif
1948
1949 if (!ev_active (&pipe_w))
1950 return;
1951
1952 signals [signum - 1].pending = 1;
1953 evpipe_write (EV_A_ &sig_pending);
1954}
1955
1169static void 1956static void
1170ev_sighandler (int signum) 1957ev_sighandler (int signum)
1171{ 1958{
1172#if EV_MULTIPLICITY
1173 struct ev_loop *loop = &default_loop_struct;
1174#endif
1175
1176#if _WIN32 1959#ifdef _WIN32
1177 signal (signum, ev_sighandler); 1960 signal (signum, ev_sighandler);
1178#endif 1961#endif
1179 1962
1180 signals [signum - 1].gotsig = 1; 1963 ev_feed_signal (signum);
1181 evpipe_write (EV_A_ &gotsig);
1182} 1964}
1183 1965
1184void noinline 1966void noinline
1185ev_feed_signal_event (EV_P_ int signum) 1967ev_feed_signal_event (EV_P_ int signum)
1186{ 1968{
1187 WL w; 1969 WL w;
1188 1970
1971 if (expect_false (signum <= 0 || signum > EV_NSIG))
1972 return;
1973
1974 --signum;
1975
1189#if EV_MULTIPLICITY 1976#if EV_MULTIPLICITY
1190 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1977 /* it is permissible to try to feed a signal to the wrong loop */
1191#endif 1978 /* or, likely more useful, feeding a signal nobody is waiting for */
1192 1979
1193 --signum; 1980 if (expect_false (signals [signum].loop != EV_A))
1194
1195 if (signum < 0 || signum >= signalmax)
1196 return; 1981 return;
1982#endif
1197 1983
1198 signals [signum].gotsig = 0; 1984 signals [signum].pending = 0;
1199 1985
1200 for (w = signals [signum].head; w; w = w->next) 1986 for (w = signals [signum].head; w; w = w->next)
1201 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1987 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1202} 1988}
1203 1989
1990#if EV_USE_SIGNALFD
1991static void
1992sigfdcb (EV_P_ ev_io *iow, int revents)
1993{
1994 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1995
1996 for (;;)
1997 {
1998 ssize_t res = read (sigfd, si, sizeof (si));
1999
2000 /* not ISO-C, as res might be -1, but works with SuS */
2001 for (sip = si; (char *)sip < (char *)si + res; ++sip)
2002 ev_feed_signal_event (EV_A_ sip->ssi_signo);
2003
2004 if (res < (ssize_t)sizeof (si))
2005 break;
2006 }
2007}
2008#endif
2009
2010#endif
2011
1204/*****************************************************************************/ 2012/*****************************************************************************/
1205 2013
2014#if EV_CHILD_ENABLE
1206static WL childs [EV_PID_HASHSIZE]; 2015static WL childs [EV_PID_HASHSIZE];
1207
1208#ifndef _WIN32
1209 2016
1210static ev_signal childev; 2017static ev_signal childev;
1211 2018
1212#ifndef WIFCONTINUED 2019#ifndef WIFCONTINUED
1213# define WIFCONTINUED(status) 0 2020# define WIFCONTINUED(status) 0
… …
1218child_reap (EV_P_ int chain, int pid, int status) 2025child_reap (EV_P_ int chain, int pid, int status)
1219{ 2026{
1220 ev_child *w; 2027 ev_child *w;
1221 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2028 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1222 2029
1223 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2030 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1224 { 2031 {
1225 if ((w->pid == pid || !w->pid) 2032 if ((w->pid == pid || !w->pid)
1226 && (!traced || (w->flags & 1))) 2033 && (!traced || (w->flags & 1)))
1227 { 2034 {
1228 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2035 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1253 /* make sure we are called again until all children have been reaped */ 2060 /* make sure we are called again until all children have been reaped */
1254 /* we need to do it this way so that the callback gets called before we continue */ 2061 /* we need to do it this way so that the callback gets called before we continue */
1255 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2062 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1256 2063
1257 child_reap (EV_A_ pid, pid, status); 2064 child_reap (EV_A_ pid, pid, status);
1258 if (EV_PID_HASHSIZE > 1) 2065 if ((EV_PID_HASHSIZE) > 1)
1259 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2066 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1260} 2067}
1261 2068
1262#endif 2069#endif
1263 2070
1264/*****************************************************************************/ 2071/*****************************************************************************/
1265 2072
2073#if EV_USE_IOCP
2074# include "ev_iocp.c"
2075#endif
1266#if EV_USE_PORT 2076#if EV_USE_PORT
1267# include "ev_port.c" 2077# include "ev_port.c"
1268#endif 2078#endif
1269#if EV_USE_KQUEUE 2079#if EV_USE_KQUEUE
1270# include "ev_kqueue.c" 2080# include "ev_kqueue.c"
… …
1277#endif 2087#endif
1278#if EV_USE_SELECT 2088#if EV_USE_SELECT
1279# include "ev_select.c" 2089# include "ev_select.c"
1280#endif 2090#endif
1281 2091
1282int 2092int ecb_cold
1283ev_version_major (void) 2093ev_version_major (void)
1284{ 2094{
1285 return EV_VERSION_MAJOR; 2095 return EV_VERSION_MAJOR;
1286} 2096}
1287 2097
1288int 2098int ecb_cold
1289ev_version_minor (void) 2099ev_version_minor (void)
1290{ 2100{
1291 return EV_VERSION_MINOR; 2101 return EV_VERSION_MINOR;
1292} 2102}
1293 2103
1294/* return true if we are running with elevated privileges and should ignore env variables */ 2104/* return true if we are running with elevated privileges and should ignore env variables */
1295int inline_size 2105int inline_size ecb_cold
1296enable_secure (void) 2106enable_secure (void)
1297{ 2107{
1298#ifdef _WIN32 2108#ifdef _WIN32
1299 return 0; 2109 return 0;
1300#else 2110#else
1301 return getuid () != geteuid () 2111 return getuid () != geteuid ()
1302 || getgid () != getegid (); 2112 || getgid () != getegid ();
1303#endif 2113#endif
1304} 2114}
1305 2115
1306unsigned int 2116unsigned int ecb_cold
1307ev_supported_backends (void) 2117ev_supported_backends (void)
1308{ 2118{
1309 unsigned int flags = 0; 2119 unsigned int flags = 0;
1310 2120
1311 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2121 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1315 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2125 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1316 2126
1317 return flags; 2127 return flags;
1318} 2128}
1319 2129
1320unsigned int 2130unsigned int ecb_cold
1321ev_recommended_backends (void) 2131ev_recommended_backends (void)
1322{ 2132{
1323 unsigned int flags = ev_supported_backends (); 2133 unsigned int flags = ev_supported_backends ();
1324 2134
1325#ifndef __NetBSD__ 2135#ifndef __NetBSD__
… …
1330#ifdef __APPLE__ 2140#ifdef __APPLE__
1331 /* only select works correctly on that "unix-certified" platform */ 2141 /* only select works correctly on that "unix-certified" platform */
1332 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2142 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1333 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2143 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1334#endif 2144#endif
2145#ifdef __FreeBSD__
2146 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2147#endif
1335 2148
1336 return flags; 2149 return flags;
1337} 2150}
1338 2151
1339unsigned int 2152unsigned int ecb_cold
1340ev_embeddable_backends (void) 2153ev_embeddable_backends (void)
1341{ 2154{
1342 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2155 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1343 2156
1344 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2157 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1345 /* please fix it and tell me how to detect the fix */ 2158 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1346 flags &= ~EVBACKEND_EPOLL; 2159 flags &= ~EVBACKEND_EPOLL;
1347 2160
1348 return flags; 2161 return flags;
1349} 2162}
1350 2163
1351unsigned int 2164unsigned int
1352ev_backend (EV_P) 2165ev_backend (EV_P)
1353{ 2166{
1354 return backend; 2167 return backend;
1355} 2168}
1356 2169
2170#if EV_FEATURE_API
1357unsigned int 2171unsigned int
1358ev_loop_count (EV_P) 2172ev_iteration (EV_P)
1359{ 2173{
1360 return loop_count; 2174 return loop_count;
2175}
2176
2177unsigned int
2178ev_depth (EV_P)
2179{
2180 return loop_depth;
1361} 2181}
1362 2182
1363void 2183void
1364ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2184ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1365{ 2185{
… …
1370ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2190ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1371{ 2191{
1372 timeout_blocktime = interval; 2192 timeout_blocktime = interval;
1373} 2193}
1374 2194
2195void
2196ev_set_userdata (EV_P_ void *data)
2197{
2198 userdata = data;
2199}
2200
2201void *
2202ev_userdata (EV_P)
2203{
2204 return userdata;
2205}
2206
2207void
2208ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
2209{
2210 invoke_cb = invoke_pending_cb;
2211}
2212
2213void
2214ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
2215{
2216 release_cb = release;
2217 acquire_cb = acquire;
2218}
2219#endif
2220
1375/* initialise a loop structure, must be zero-initialised */ 2221/* initialise a loop structure, must be zero-initialised */
1376static void noinline 2222static void noinline ecb_cold
1377loop_init (EV_P_ unsigned int flags) 2223loop_init (EV_P_ unsigned int flags)
1378{ 2224{
1379 if (!backend) 2225 if (!backend)
1380 { 2226 {
2227 origflags = flags;
2228
1381#if EV_USE_REALTIME 2229#if EV_USE_REALTIME
1382 if (!have_realtime) 2230 if (!have_realtime)
1383 { 2231 {
1384 struct timespec ts; 2232 struct timespec ts;
1385 2233
… …
1396 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2244 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1397 have_monotonic = 1; 2245 have_monotonic = 1;
1398 } 2246 }
1399#endif 2247#endif
1400 2248
1401 ev_rt_now = ev_time ();
1402 mn_now = get_clock ();
1403 now_floor = mn_now;
1404 rtmn_diff = ev_rt_now - mn_now;
1405
1406 io_blocktime = 0.;
1407 timeout_blocktime = 0.;
1408 backend = 0;
1409 backend_fd = -1;
1410 gotasync = 0;
1411#if EV_USE_INOTIFY
1412 fs_fd = -2;
1413#endif
1414
1415 /* pid check not overridable via env */ 2249 /* pid check not overridable via env */
1416#ifndef _WIN32 2250#ifndef _WIN32
1417 if (flags & EVFLAG_FORKCHECK) 2251 if (flags & EVFLAG_FORKCHECK)
1418 curpid = getpid (); 2252 curpid = getpid ();
1419#endif 2253#endif
… …
1421 if (!(flags & EVFLAG_NOENV) 2255 if (!(flags & EVFLAG_NOENV)
1422 && !enable_secure () 2256 && !enable_secure ()
1423 && getenv ("LIBEV_FLAGS")) 2257 && getenv ("LIBEV_FLAGS"))
1424 flags = atoi (getenv ("LIBEV_FLAGS")); 2258 flags = atoi (getenv ("LIBEV_FLAGS"));
1425 2259
1426 if (!(flags & 0x0000ffffU)) 2260 ev_rt_now = ev_time ();
2261 mn_now = get_clock ();
2262 now_floor = mn_now;
2263 rtmn_diff = ev_rt_now - mn_now;
2264#if EV_FEATURE_API
2265 invoke_cb = ev_invoke_pending;
2266#endif
2267
2268 io_blocktime = 0.;
2269 timeout_blocktime = 0.;
2270 backend = 0;
2271 backend_fd = -1;
2272 sig_pending = 0;
2273#if EV_ASYNC_ENABLE
2274 async_pending = 0;
2275#endif
2276 pipe_write_skipped = 0;
2277 pipe_write_wanted = 0;
2278#if EV_USE_INOTIFY
2279 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2280#endif
2281#if EV_USE_SIGNALFD
2282 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2283#endif
2284
2285 if (!(flags & EVBACKEND_MASK))
1427 flags |= ev_recommended_backends (); 2286 flags |= ev_recommended_backends ();
1428 2287
2288#if EV_USE_IOCP
2289 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2290#endif
1429#if EV_USE_PORT 2291#if EV_USE_PORT
1430 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2292 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1431#endif 2293#endif
1432#if EV_USE_KQUEUE 2294#if EV_USE_KQUEUE
1433 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2295 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1442 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2304 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1443#endif 2305#endif
1444 2306
1445 ev_prepare_init (&pending_w, pendingcb); 2307 ev_prepare_init (&pending_w, pendingcb);
1446 2308
2309#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1447 ev_init (&pipe_w, pipecb); 2310 ev_init (&pipe_w, pipecb);
1448 ev_set_priority (&pipe_w, EV_MAXPRI); 2311 ev_set_priority (&pipe_w, EV_MAXPRI);
2312#endif
1449 } 2313 }
1450} 2314}
1451 2315
1452/* free up a loop structure */ 2316/* free up a loop structure */
1453static void noinline 2317void ecb_cold
1454loop_destroy (EV_P) 2318ev_loop_destroy (EV_P)
1455{ 2319{
1456 int i; 2320 int i;
1457 2321
2322#if EV_MULTIPLICITY
2323 /* mimic free (0) */
2324 if (!EV_A)
2325 return;
2326#endif
2327
2328#if EV_CLEANUP_ENABLE
2329 /* queue cleanup watchers (and execute them) */
2330 if (expect_false (cleanupcnt))
2331 {
2332 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2333 EV_INVOKE_PENDING;
2334 }
2335#endif
2336
2337#if EV_CHILD_ENABLE
2338 if (ev_is_active (&childev))
2339 {
2340 ev_ref (EV_A); /* child watcher */
2341 ev_signal_stop (EV_A_ &childev);
2342 }
2343#endif
2344
1458 if (ev_is_active (&pipe_w)) 2345 if (ev_is_active (&pipe_w))
1459 { 2346 {
1460 ev_ref (EV_A); /* signal watcher */ 2347 /*ev_ref (EV_A);*/
1461 ev_io_stop (EV_A_ &pipe_w); 2348 /*ev_io_stop (EV_A_ &pipe_w);*/
1462 2349
1463#if EV_USE_EVENTFD 2350#if EV_USE_EVENTFD
1464 if (evfd >= 0) 2351 if (evfd >= 0)
1465 close (evfd); 2352 close (evfd);
1466#endif 2353#endif
1467 2354
1468 if (evpipe [0] >= 0) 2355 if (evpipe [0] >= 0)
1469 { 2356 {
1470 close (evpipe [0]); 2357 EV_WIN32_CLOSE_FD (evpipe [0]);
1471 close (evpipe [1]); 2358 EV_WIN32_CLOSE_FD (evpipe [1]);
1472 } 2359 }
1473 } 2360 }
2361
2362#if EV_USE_SIGNALFD
2363 if (ev_is_active (&sigfd_w))
2364 close (sigfd);
2365#endif
1474 2366
1475#if EV_USE_INOTIFY 2367#if EV_USE_INOTIFY
1476 if (fs_fd >= 0) 2368 if (fs_fd >= 0)
1477 close (fs_fd); 2369 close (fs_fd);
1478#endif 2370#endif
1479 2371
1480 if (backend_fd >= 0) 2372 if (backend_fd >= 0)
1481 close (backend_fd); 2373 close (backend_fd);
1482 2374
2375#if EV_USE_IOCP
2376 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2377#endif
1483#if EV_USE_PORT 2378#if EV_USE_PORT
1484 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2379 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1485#endif 2380#endif
1486#if EV_USE_KQUEUE 2381#if EV_USE_KQUEUE
1487 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2382 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1502#if EV_IDLE_ENABLE 2397#if EV_IDLE_ENABLE
1503 array_free (idle, [i]); 2398 array_free (idle, [i]);
1504#endif 2399#endif
1505 } 2400 }
1506 2401
1507 ev_free (anfds); anfdmax = 0; 2402 ev_free (anfds); anfds = 0; anfdmax = 0;
1508 2403
1509 /* have to use the microsoft-never-gets-it-right macro */ 2404 /* have to use the microsoft-never-gets-it-right macro */
1510 array_free (rfeed, EMPTY); 2405 array_free (rfeed, EMPTY);
1511 array_free (fdchange, EMPTY); 2406 array_free (fdchange, EMPTY);
1512 array_free (timer, EMPTY); 2407 array_free (timer, EMPTY);
… …
1514 array_free (periodic, EMPTY); 2409 array_free (periodic, EMPTY);
1515#endif 2410#endif
1516#if EV_FORK_ENABLE 2411#if EV_FORK_ENABLE
1517 array_free (fork, EMPTY); 2412 array_free (fork, EMPTY);
1518#endif 2413#endif
2414#if EV_CLEANUP_ENABLE
2415 array_free (cleanup, EMPTY);
2416#endif
1519 array_free (prepare, EMPTY); 2417 array_free (prepare, EMPTY);
1520 array_free (check, EMPTY); 2418 array_free (check, EMPTY);
1521#if EV_ASYNC_ENABLE 2419#if EV_ASYNC_ENABLE
1522 array_free (async, EMPTY); 2420 array_free (async, EMPTY);
1523#endif 2421#endif
1524 2422
1525 backend = 0; 2423 backend = 0;
2424
2425#if EV_MULTIPLICITY
2426 if (ev_is_default_loop (EV_A))
2427#endif
2428 ev_default_loop_ptr = 0;
2429#if EV_MULTIPLICITY
2430 else
2431 ev_free (EV_A);
2432#endif
1526} 2433}
1527 2434
1528#if EV_USE_INOTIFY 2435#if EV_USE_INOTIFY
1529inline_size void infy_fork (EV_P); 2436inline_size void infy_fork (EV_P);
1530#endif 2437#endif
… …
1545 infy_fork (EV_A); 2452 infy_fork (EV_A);
1546#endif 2453#endif
1547 2454
1548 if (ev_is_active (&pipe_w)) 2455 if (ev_is_active (&pipe_w))
1549 { 2456 {
1550 /* this "locks" the handlers against writing to the pipe */ 2457 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1551 /* while we modify the fd vars */
1552 gotsig = 1;
1553#if EV_ASYNC_ENABLE
1554 gotasync = 1;
1555#endif
1556 2458
1557 ev_ref (EV_A); 2459 ev_ref (EV_A);
1558 ev_io_stop (EV_A_ &pipe_w); 2460 ev_io_stop (EV_A_ &pipe_w);
1559 2461
1560#if EV_USE_EVENTFD 2462#if EV_USE_EVENTFD
… …
1562 close (evfd); 2464 close (evfd);
1563#endif 2465#endif
1564 2466
1565 if (evpipe [0] >= 0) 2467 if (evpipe [0] >= 0)
1566 { 2468 {
1567 close (evpipe [0]); 2469 EV_WIN32_CLOSE_FD (evpipe [0]);
1568 close (evpipe [1]); 2470 EV_WIN32_CLOSE_FD (evpipe [1]);
1569 } 2471 }
1570 2472
2473#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1571 evpipe_init (EV_A); 2474 evpipe_init (EV_A);
1572 /* now iterate over everything, in case we missed something */ 2475 /* now iterate over everything, in case we missed something */
1573 pipecb (EV_A_ &pipe_w, EV_READ); 2476 pipecb (EV_A_ &pipe_w, EV_READ);
2477#endif
1574 } 2478 }
1575 2479
1576 postfork = 0; 2480 postfork = 0;
1577} 2481}
1578 2482
1579#if EV_MULTIPLICITY 2483#if EV_MULTIPLICITY
1580 2484
1581struct ev_loop * 2485struct ev_loop * ecb_cold
1582ev_loop_new (unsigned int flags) 2486ev_loop_new (unsigned int flags)
1583{ 2487{
1584 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2488 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1585 2489
1586 memset (loop, 0, sizeof (struct ev_loop)); 2490 memset (EV_A, 0, sizeof (struct ev_loop));
1587
1588 loop_init (EV_A_ flags); 2491 loop_init (EV_A_ flags);
1589 2492
1590 if (ev_backend (EV_A)) 2493 if (ev_backend (EV_A))
1591 return loop; 2494 return EV_A;
1592 2495
2496 ev_free (EV_A);
1593 return 0; 2497 return 0;
1594} 2498}
1595 2499
1596void 2500#endif /* multiplicity */
1597ev_loop_destroy (EV_P)
1598{
1599 loop_destroy (EV_A);
1600 ev_free (loop);
1601}
1602
1603void
1604ev_loop_fork (EV_P)
1605{
1606 postfork = 1; /* must be in line with ev_default_fork */
1607}
1608 2501
1609#if EV_VERIFY 2502#if EV_VERIFY
1610static void noinline 2503static void noinline ecb_cold
1611verify_watcher (EV_P_ W w) 2504verify_watcher (EV_P_ W w)
1612{ 2505{
1613 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2506 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1614 2507
1615 if (w->pending) 2508 if (w->pending)
1616 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2509 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1617} 2510}
1618 2511
1619static void noinline 2512static void noinline ecb_cold
1620verify_heap (EV_P_ ANHE *heap, int N) 2513verify_heap (EV_P_ ANHE *heap, int N)
1621{ 2514{
1622 int i; 2515 int i;
1623 2516
1624 for (i = HEAP0; i < N + HEAP0; ++i) 2517 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1629 2522
1630 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2523 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1631 } 2524 }
1632} 2525}
1633 2526
1634static void noinline 2527static void noinline ecb_cold
1635array_verify (EV_P_ W *ws, int cnt) 2528array_verify (EV_P_ W *ws, int cnt)
1636{ 2529{
1637 while (cnt--) 2530 while (cnt--)
1638 { 2531 {
1639 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2532 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1640 verify_watcher (EV_A_ ws [cnt]); 2533 verify_watcher (EV_A_ ws [cnt]);
1641 } 2534 }
1642} 2535}
1643#endif 2536#endif
1644 2537
1645void 2538#if EV_FEATURE_API
2539void ecb_cold
1646ev_loop_verify (EV_P) 2540ev_verify (EV_P)
1647{ 2541{
1648#if EV_VERIFY 2542#if EV_VERIFY
1649 int i; 2543 int i;
1650 WL w; 2544 WL w;
1651 2545
… …
1685#if EV_FORK_ENABLE 2579#if EV_FORK_ENABLE
1686 assert (forkmax >= forkcnt); 2580 assert (forkmax >= forkcnt);
1687 array_verify (EV_A_ (W *)forks, forkcnt); 2581 array_verify (EV_A_ (W *)forks, forkcnt);
1688#endif 2582#endif
1689 2583
2584#if EV_CLEANUP_ENABLE
2585 assert (cleanupmax >= cleanupcnt);
2586 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2587#endif
2588
1690#if EV_ASYNC_ENABLE 2589#if EV_ASYNC_ENABLE
1691 assert (asyncmax >= asynccnt); 2590 assert (asyncmax >= asynccnt);
1692 array_verify (EV_A_ (W *)asyncs, asynccnt); 2591 array_verify (EV_A_ (W *)asyncs, asynccnt);
1693#endif 2592#endif
1694 2593
2594#if EV_PREPARE_ENABLE
1695 assert (preparemax >= preparecnt); 2595 assert (preparemax >= preparecnt);
1696 array_verify (EV_A_ (W *)prepares, preparecnt); 2596 array_verify (EV_A_ (W *)prepares, preparecnt);
2597#endif
1697 2598
2599#if EV_CHECK_ENABLE
1698 assert (checkmax >= checkcnt); 2600 assert (checkmax >= checkcnt);
1699 array_verify (EV_A_ (W *)checks, checkcnt); 2601 array_verify (EV_A_ (W *)checks, checkcnt);
2602#endif
1700 2603
1701# if 0 2604# if 0
2605#if EV_CHILD_ENABLE
1702 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2606 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1703 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2607 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2608#endif
1704# endif 2609# endif
1705#endif 2610#endif
1706} 2611}
1707 2612#endif
1708#endif /* multiplicity */
1709 2613
1710#if EV_MULTIPLICITY 2614#if EV_MULTIPLICITY
1711struct ev_loop * 2615struct ev_loop * ecb_cold
1712ev_default_loop_init (unsigned int flags)
1713#else 2616#else
1714int 2617int
2618#endif
1715ev_default_loop (unsigned int flags) 2619ev_default_loop (unsigned int flags)
1716#endif
1717{ 2620{
1718 if (!ev_default_loop_ptr) 2621 if (!ev_default_loop_ptr)
1719 { 2622 {
1720#if EV_MULTIPLICITY 2623#if EV_MULTIPLICITY
1721 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2624 EV_P = ev_default_loop_ptr = &default_loop_struct;
1722#else 2625#else
1723 ev_default_loop_ptr = 1; 2626 ev_default_loop_ptr = 1;
1724#endif 2627#endif
1725 2628
1726 loop_init (EV_A_ flags); 2629 loop_init (EV_A_ flags);
1727 2630
1728 if (ev_backend (EV_A)) 2631 if (ev_backend (EV_A))
1729 { 2632 {
1730#ifndef _WIN32 2633#if EV_CHILD_ENABLE
1731 ev_signal_init (&childev, childcb, SIGCHLD); 2634 ev_signal_init (&childev, childcb, SIGCHLD);
1732 ev_set_priority (&childev, EV_MAXPRI); 2635 ev_set_priority (&childev, EV_MAXPRI);
1733 ev_signal_start (EV_A_ &childev); 2636 ev_signal_start (EV_A_ &childev);
1734 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2637 ev_unref (EV_A); /* child watcher should not keep loop alive */
1735#endif 2638#endif
… …
1740 2643
1741 return ev_default_loop_ptr; 2644 return ev_default_loop_ptr;
1742} 2645}
1743 2646
1744void 2647void
1745ev_default_destroy (void) 2648ev_loop_fork (EV_P)
1746{ 2649{
1747#if EV_MULTIPLICITY
1748 struct ev_loop *loop = ev_default_loop_ptr;
1749#endif
1750
1751 ev_default_loop_ptr = 0;
1752
1753#ifndef _WIN32
1754 ev_ref (EV_A); /* child watcher */
1755 ev_signal_stop (EV_A_ &childev);
1756#endif
1757
1758 loop_destroy (EV_A);
1759}
1760
1761void
1762ev_default_fork (void)
1763{
1764#if EV_MULTIPLICITY
1765 struct ev_loop *loop = ev_default_loop_ptr;
1766#endif
1767
1768 postfork = 1; /* must be in line with ev_loop_fork */ 2650 postfork = 1; /* must be in line with ev_default_fork */
1769} 2651}
1770 2652
1771/*****************************************************************************/ 2653/*****************************************************************************/
1772 2654
1773void 2655void
1774ev_invoke (EV_P_ void *w, int revents) 2656ev_invoke (EV_P_ void *w, int revents)
1775{ 2657{
1776 EV_CB_INVOKE ((W)w, revents); 2658 EV_CB_INVOKE ((W)w, revents);
1777} 2659}
1778 2660
1779inline_speed void 2661unsigned int
1780call_pending (EV_P) 2662ev_pending_count (EV_P)
2663{
2664 int pri;
2665 unsigned int count = 0;
2666
2667 for (pri = NUMPRI; pri--; )
2668 count += pendingcnt [pri];
2669
2670 return count;
2671}
2672
2673void noinline
2674ev_invoke_pending (EV_P)
1781{ 2675{
1782 int pri; 2676 int pri;
1783 2677
1784 for (pri = NUMPRI; pri--; ) 2678 for (pri = NUMPRI; pri--; )
1785 while (pendingcnt [pri]) 2679 while (pendingcnt [pri])
1786 { 2680 {
1787 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2681 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1788
1789 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1790 /* ^ this is no longer true, as pending_w could be here */
1791 2682
1792 p->w->pending = 0; 2683 p->w->pending = 0;
1793 EV_CB_INVOKE (p->w, p->events); 2684 EV_CB_INVOKE (p->w, p->events);
1794 EV_FREQUENT_CHECK; 2685 EV_FREQUENT_CHECK;
1795 } 2686 }
… …
1852 EV_FREQUENT_CHECK; 2743 EV_FREQUENT_CHECK;
1853 feed_reverse (EV_A_ (W)w); 2744 feed_reverse (EV_A_ (W)w);
1854 } 2745 }
1855 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2746 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1856 2747
1857 feed_reverse_done (EV_A_ EV_TIMEOUT); 2748 feed_reverse_done (EV_A_ EV_TIMER);
1858 } 2749 }
1859} 2750}
1860 2751
1861#if EV_PERIODIC_ENABLE 2752#if EV_PERIODIC_ENABLE
2753
2754static void noinline
2755periodic_recalc (EV_P_ ev_periodic *w)
2756{
2757 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2758 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2759
2760 /* the above almost always errs on the low side */
2761 while (at <= ev_rt_now)
2762 {
2763 ev_tstamp nat = at + w->interval;
2764
2765 /* when resolution fails us, we use ev_rt_now */
2766 if (expect_false (nat == at))
2767 {
2768 at = ev_rt_now;
2769 break;
2770 }
2771
2772 at = nat;
2773 }
2774
2775 ev_at (w) = at;
2776}
2777
1862/* make periodics pending */ 2778/* make periodics pending */
1863inline_size void 2779inline_size void
1864periodics_reify (EV_P) 2780periodics_reify (EV_P)
1865{ 2781{
1866 EV_FREQUENT_CHECK; 2782 EV_FREQUENT_CHECK;
… …
1885 ANHE_at_cache (periodics [HEAP0]); 2801 ANHE_at_cache (periodics [HEAP0]);
1886 downheap (periodics, periodiccnt, HEAP0); 2802 downheap (periodics, periodiccnt, HEAP0);
1887 } 2803 }
1888 else if (w->interval) 2804 else if (w->interval)
1889 { 2805 {
1890 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2806 periodic_recalc (EV_A_ w);
1891 /* if next trigger time is not sufficiently in the future, put it there */
1892 /* this might happen because of floating point inexactness */
1893 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1894 {
1895 ev_at (w) += w->interval;
1896
1897 /* if interval is unreasonably low we might still have a time in the past */
1898 /* so correct this. this will make the periodic very inexact, but the user */
1899 /* has effectively asked to get triggered more often than possible */
1900 if (ev_at (w) < ev_rt_now)
1901 ev_at (w) = ev_rt_now;
1902 }
1903
1904 ANHE_at_cache (periodics [HEAP0]); 2807 ANHE_at_cache (periodics [HEAP0]);
1905 downheap (periodics, periodiccnt, HEAP0); 2808 downheap (periodics, periodiccnt, HEAP0);
1906 } 2809 }
1907 else 2810 else
1908 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2811 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1915 feed_reverse_done (EV_A_ EV_PERIODIC); 2818 feed_reverse_done (EV_A_ EV_PERIODIC);
1916 } 2819 }
1917} 2820}
1918 2821
1919/* simply recalculate all periodics */ 2822/* simply recalculate all periodics */
1920/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2823/* TODO: maybe ensure that at least one event happens when jumping forward? */
1921static void noinline 2824static void noinline ecb_cold
1922periodics_reschedule (EV_P) 2825periodics_reschedule (EV_P)
1923{ 2826{
1924 int i; 2827 int i;
1925 2828
1926 /* adjust periodics after time jump */ 2829 /* adjust periodics after time jump */
… …
1929 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2832 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1930 2833
1931 if (w->reschedule_cb) 2834 if (w->reschedule_cb)
1932 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2835 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1933 else if (w->interval) 2836 else if (w->interval)
1934 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2837 periodic_recalc (EV_A_ w);
1935 2838
1936 ANHE_at_cache (periodics [i]); 2839 ANHE_at_cache (periodics [i]);
1937 } 2840 }
1938 2841
1939 reheap (periodics, periodiccnt); 2842 reheap (periodics, periodiccnt);
1940} 2843}
1941#endif 2844#endif
1942 2845
1943/* adjust all timers by a given offset */ 2846/* adjust all timers by a given offset */
1944static void noinline 2847static void noinline ecb_cold
1945timers_reschedule (EV_P_ ev_tstamp adjust) 2848timers_reschedule (EV_P_ ev_tstamp adjust)
1946{ 2849{
1947 int i; 2850 int i;
1948 2851
1949 for (i = 0; i < timercnt; ++i) 2852 for (i = 0; i < timercnt; ++i)
… …
1953 ANHE_at_cache (*he); 2856 ANHE_at_cache (*he);
1954 } 2857 }
1955} 2858}
1956 2859
1957/* fetch new monotonic and realtime times from the kernel */ 2860/* fetch new monotonic and realtime times from the kernel */
1958/* also detetc if there was a timejump, and act accordingly */ 2861/* also detect if there was a timejump, and act accordingly */
1959inline_speed void 2862inline_speed void
1960time_update (EV_P_ ev_tstamp max_block) 2863time_update (EV_P_ ev_tstamp max_block)
1961{ 2864{
1962#if EV_USE_MONOTONIC 2865#if EV_USE_MONOTONIC
1963 if (expect_true (have_monotonic)) 2866 if (expect_true (have_monotonic))
… …
1986 * doesn't hurt either as we only do this on time-jumps or 2889 * doesn't hurt either as we only do this on time-jumps or
1987 * in the unlikely event of having been preempted here. 2890 * in the unlikely event of having been preempted here.
1988 */ 2891 */
1989 for (i = 4; --i; ) 2892 for (i = 4; --i; )
1990 { 2893 {
2894 ev_tstamp diff;
1991 rtmn_diff = ev_rt_now - mn_now; 2895 rtmn_diff = ev_rt_now - mn_now;
1992 2896
2897 diff = odiff - rtmn_diff;
2898
1993 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2899 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1994 return; /* all is well */ 2900 return; /* all is well */
1995 2901
1996 ev_rt_now = ev_time (); 2902 ev_rt_now = ev_time ();
1997 mn_now = get_clock (); 2903 mn_now = get_clock ();
1998 now_floor = mn_now; 2904 now_floor = mn_now;
… …
2020 2926
2021 mn_now = ev_rt_now; 2927 mn_now = ev_rt_now;
2022 } 2928 }
2023} 2929}
2024 2930
2025static int loop_done;
2026
2027void 2931void
2028ev_loop (EV_P_ int flags) 2932ev_run (EV_P_ int flags)
2029{ 2933{
2934#if EV_FEATURE_API
2935 ++loop_depth;
2936#endif
2937
2938 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2939
2030 loop_done = EVUNLOOP_CANCEL; 2940 loop_done = EVBREAK_CANCEL;
2031 2941
2032 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2942 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2033 2943
2034 do 2944 do
2035 { 2945 {
2036#if EV_VERIFY >= 2 2946#if EV_VERIFY >= 2
2037 ev_loop_verify (EV_A); 2947 ev_verify (EV_A);
2038#endif 2948#endif
2039 2949
2040#ifndef _WIN32 2950#ifndef _WIN32
2041 if (expect_false (curpid)) /* penalise the forking check even more */ 2951 if (expect_false (curpid)) /* penalise the forking check even more */
2042 if (expect_false (getpid () != curpid)) 2952 if (expect_false (getpid () != curpid))
… …
2050 /* we might have forked, so queue fork handlers */ 2960 /* we might have forked, so queue fork handlers */
2051 if (expect_false (postfork)) 2961 if (expect_false (postfork))
2052 if (forkcnt) 2962 if (forkcnt)
2053 { 2963 {
2054 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2964 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2055 call_pending (EV_A); 2965 EV_INVOKE_PENDING;
2056 } 2966 }
2057#endif 2967#endif
2058 2968
2969#if EV_PREPARE_ENABLE
2059 /* queue prepare watchers (and execute them) */ 2970 /* queue prepare watchers (and execute them) */
2060 if (expect_false (preparecnt)) 2971 if (expect_false (preparecnt))
2061 { 2972 {
2062 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2973 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2063 call_pending (EV_A); 2974 EV_INVOKE_PENDING;
2064 } 2975 }
2976#endif
2977
2978 if (expect_false (loop_done))
2979 break;
2065 2980
2066 /* we might have forked, so reify kernel state if necessary */ 2981 /* we might have forked, so reify kernel state if necessary */
2067 if (expect_false (postfork)) 2982 if (expect_false (postfork))
2068 loop_fork (EV_A); 2983 loop_fork (EV_A);
2069 2984
… …
2073 /* calculate blocking time */ 2988 /* calculate blocking time */
2074 { 2989 {
2075 ev_tstamp waittime = 0.; 2990 ev_tstamp waittime = 0.;
2076 ev_tstamp sleeptime = 0.; 2991 ev_tstamp sleeptime = 0.;
2077 2992
2993 /* remember old timestamp for io_blocktime calculation */
2994 ev_tstamp prev_mn_now = mn_now;
2995
2996 /* update time to cancel out callback processing overhead */
2997 time_update (EV_A_ 1e100);
2998
2999 /* from now on, we want a pipe-wake-up */
3000 pipe_write_wanted = 1;
3001
3002 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3003
2078 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3004 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2079 { 3005 {
2080 /* remember old timestamp for io_blocktime calculation */
2081 ev_tstamp prev_mn_now = mn_now;
2082
2083 /* update time to cancel out callback processing overhead */
2084 time_update (EV_A_ 1e100);
2085
2086 waittime = MAX_BLOCKTIME; 3006 waittime = MAX_BLOCKTIME;
2087 3007
2088 if (timercnt) 3008 if (timercnt)
2089 { 3009 {
2090 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3010 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2091 if (waittime > to) waittime = to; 3011 if (waittime > to) waittime = to;
2092 } 3012 }
2093 3013
2094#if EV_PERIODIC_ENABLE 3014#if EV_PERIODIC_ENABLE
2095 if (periodiccnt) 3015 if (periodiccnt)
2096 { 3016 {
2097 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3017 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2098 if (waittime > to) waittime = to; 3018 if (waittime > to) waittime = to;
2099 } 3019 }
2100#endif 3020#endif
2101 3021
2102 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3022 /* don't let timeouts decrease the waittime below timeout_blocktime */
2103 if (expect_false (waittime < timeout_blocktime)) 3023 if (expect_false (waittime < timeout_blocktime))
2104 waittime = timeout_blocktime; 3024 waittime = timeout_blocktime;
3025
3026 /* at this point, we NEED to wait, so we have to ensure */
3027 /* to pass a minimum nonzero value to the backend */
3028 if (expect_false (waittime < backend_mintime))
3029 waittime = backend_mintime;
2105 3030
2106 /* extra check because io_blocktime is commonly 0 */ 3031 /* extra check because io_blocktime is commonly 0 */
2107 if (expect_false (io_blocktime)) 3032 if (expect_false (io_blocktime))
2108 { 3033 {
2109 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3034 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2110 3035
2111 if (sleeptime > waittime - backend_fudge) 3036 if (sleeptime > waittime - backend_mintime)
2112 sleeptime = waittime - backend_fudge; 3037 sleeptime = waittime - backend_mintime;
2113 3038
2114 if (expect_true (sleeptime > 0.)) 3039 if (expect_true (sleeptime > 0.))
2115 { 3040 {
2116 ev_sleep (sleeptime); 3041 ev_sleep (sleeptime);
2117 waittime -= sleeptime; 3042 waittime -= sleeptime;
2118 } 3043 }
2119 } 3044 }
2120 } 3045 }
2121 3046
3047#if EV_FEATURE_API
2122 ++loop_count; 3048 ++loop_count;
3049#endif
3050 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2123 backend_poll (EV_A_ waittime); 3051 backend_poll (EV_A_ waittime);
3052 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3053
3054 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3055
3056 if (pipe_write_skipped)
3057 {
3058 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3059 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3060 }
3061
2124 3062
2125 /* update ev_rt_now, do magic */ 3063 /* update ev_rt_now, do magic */
2126 time_update (EV_A_ waittime + sleeptime); 3064 time_update (EV_A_ waittime + sleeptime);
2127 } 3065 }
2128 3066
… …
2135#if EV_IDLE_ENABLE 3073#if EV_IDLE_ENABLE
2136 /* queue idle watchers unless other events are pending */ 3074 /* queue idle watchers unless other events are pending */
2137 idle_reify (EV_A); 3075 idle_reify (EV_A);
2138#endif 3076#endif
2139 3077
3078#if EV_CHECK_ENABLE
2140 /* queue check watchers, to be executed first */ 3079 /* queue check watchers, to be executed first */
2141 if (expect_false (checkcnt)) 3080 if (expect_false (checkcnt))
2142 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3081 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3082#endif
2143 3083
2144 call_pending (EV_A); 3084 EV_INVOKE_PENDING;
2145 } 3085 }
2146 while (expect_true ( 3086 while (expect_true (
2147 activecnt 3087 activecnt
2148 && !loop_done 3088 && !loop_done
2149 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3089 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2150 )); 3090 ));
2151 3091
2152 if (loop_done == EVUNLOOP_ONE) 3092 if (loop_done == EVBREAK_ONE)
2153 loop_done = EVUNLOOP_CANCEL; 3093 loop_done = EVBREAK_CANCEL;
3094
3095#if EV_FEATURE_API
3096 --loop_depth;
3097#endif
2154} 3098}
2155 3099
2156void 3100void
2157ev_unloop (EV_P_ int how) 3101ev_break (EV_P_ int how)
2158{ 3102{
2159 loop_done = how; 3103 loop_done = how;
2160} 3104}
2161 3105
2162void 3106void
… …
2209inline_size void 3153inline_size void
2210wlist_del (WL *head, WL elem) 3154wlist_del (WL *head, WL elem)
2211{ 3155{
2212 while (*head) 3156 while (*head)
2213 { 3157 {
2214 if (*head == elem) 3158 if (expect_true (*head == elem))
2215 { 3159 {
2216 *head = elem->next; 3160 *head = elem->next;
2217 return; 3161 break;
2218 } 3162 }
2219 3163
2220 head = &(*head)->next; 3164 head = &(*head)->next;
2221 } 3165 }
2222} 3166}
… …
2250} 3194}
2251 3195
2252inline_size void 3196inline_size void
2253pri_adjust (EV_P_ W w) 3197pri_adjust (EV_P_ W w)
2254{ 3198{
2255 int pri = w->priority; 3199 int pri = ev_priority (w);
2256 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 3200 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2257 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 3201 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2258 w->priority = pri; 3202 ev_set_priority (w, pri);
2259} 3203}
2260 3204
2261inline_speed void 3205inline_speed void
2262ev_start (EV_P_ W w, int active) 3206ev_start (EV_P_ W w, int active)
2263{ 3207{
… …
2282 3226
2283 if (expect_false (ev_is_active (w))) 3227 if (expect_false (ev_is_active (w)))
2284 return; 3228 return;
2285 3229
2286 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3230 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2287 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3231 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2288 3232
2289 EV_FREQUENT_CHECK; 3233 EV_FREQUENT_CHECK;
2290 3234
2291 ev_start (EV_A_ (W)w, 1); 3235 ev_start (EV_A_ (W)w, 1);
2292 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3236 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2293 wlist_add (&anfds[fd].head, (WL)w); 3237 wlist_add (&anfds[fd].head, (WL)w);
2294 3238
2295 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); 3239 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2296 w->events &= ~EV__IOFDSET; 3240 w->events &= ~EV__IOFDSET;
2297 3241
2298 EV_FREQUENT_CHECK; 3242 EV_FREQUENT_CHECK;
2299} 3243}
2300 3244
… …
2310 EV_FREQUENT_CHECK; 3254 EV_FREQUENT_CHECK;
2311 3255
2312 wlist_del (&anfds[w->fd].head, (WL)w); 3256 wlist_del (&anfds[w->fd].head, (WL)w);
2313 ev_stop (EV_A_ (W)w); 3257 ev_stop (EV_A_ (W)w);
2314 3258
2315 fd_change (EV_A_ w->fd, 1); 3259 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2316 3260
2317 EV_FREQUENT_CHECK; 3261 EV_FREQUENT_CHECK;
2318} 3262}
2319 3263
2320void noinline 3264void noinline
… …
2362 timers [active] = timers [timercnt + HEAP0]; 3306 timers [active] = timers [timercnt + HEAP0];
2363 adjustheap (timers, timercnt, active); 3307 adjustheap (timers, timercnt, active);
2364 } 3308 }
2365 } 3309 }
2366 3310
2367 EV_FREQUENT_CHECK;
2368
2369 ev_at (w) -= mn_now; 3311 ev_at (w) -= mn_now;
2370 3312
2371 ev_stop (EV_A_ (W)w); 3313 ev_stop (EV_A_ (W)w);
3314
3315 EV_FREQUENT_CHECK;
2372} 3316}
2373 3317
2374void noinline 3318void noinline
2375ev_timer_again (EV_P_ ev_timer *w) 3319ev_timer_again (EV_P_ ev_timer *w)
2376{ 3320{
2377 EV_FREQUENT_CHECK; 3321 EV_FREQUENT_CHECK;
3322
3323 clear_pending (EV_A_ (W)w);
2378 3324
2379 if (ev_is_active (w)) 3325 if (ev_is_active (w))
2380 { 3326 {
2381 if (w->repeat) 3327 if (w->repeat)
2382 { 3328 {
… …
2394 } 3340 }
2395 3341
2396 EV_FREQUENT_CHECK; 3342 EV_FREQUENT_CHECK;
2397} 3343}
2398 3344
3345ev_tstamp
3346ev_timer_remaining (EV_P_ ev_timer *w)
3347{
3348 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3349}
3350
2399#if EV_PERIODIC_ENABLE 3351#if EV_PERIODIC_ENABLE
2400void noinline 3352void noinline
2401ev_periodic_start (EV_P_ ev_periodic *w) 3353ev_periodic_start (EV_P_ ev_periodic *w)
2402{ 3354{
2403 if (expect_false (ev_is_active (w))) 3355 if (expect_false (ev_is_active (w)))
… …
2406 if (w->reschedule_cb) 3358 if (w->reschedule_cb)
2407 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3359 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2408 else if (w->interval) 3360 else if (w->interval)
2409 { 3361 {
2410 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3362 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2411 /* this formula differs from the one in periodic_reify because we do not always round up */ 3363 periodic_recalc (EV_A_ w);
2412 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2413 } 3364 }
2414 else 3365 else
2415 ev_at (w) = w->offset; 3366 ev_at (w) = w->offset;
2416 3367
2417 EV_FREQUENT_CHECK; 3368 EV_FREQUENT_CHECK;
… …
2449 periodics [active] = periodics [periodiccnt + HEAP0]; 3400 periodics [active] = periodics [periodiccnt + HEAP0];
2450 adjustheap (periodics, periodiccnt, active); 3401 adjustheap (periodics, periodiccnt, active);
2451 } 3402 }
2452 } 3403 }
2453 3404
2454 EV_FREQUENT_CHECK;
2455
2456 ev_stop (EV_A_ (W)w); 3405 ev_stop (EV_A_ (W)w);
3406
3407 EV_FREQUENT_CHECK;
2457} 3408}
2458 3409
2459void noinline 3410void noinline
2460ev_periodic_again (EV_P_ ev_periodic *w) 3411ev_periodic_again (EV_P_ ev_periodic *w)
2461{ 3412{
… …
2467 3418
2468#ifndef SA_RESTART 3419#ifndef SA_RESTART
2469# define SA_RESTART 0 3420# define SA_RESTART 0
2470#endif 3421#endif
2471 3422
3423#if EV_SIGNAL_ENABLE
3424
2472void noinline 3425void noinline
2473ev_signal_start (EV_P_ ev_signal *w) 3426ev_signal_start (EV_P_ ev_signal *w)
2474{ 3427{
2475#if EV_MULTIPLICITY
2476 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2477#endif
2478 if (expect_false (ev_is_active (w))) 3428 if (expect_false (ev_is_active (w)))
2479 return; 3429 return;
2480 3430
2481 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 3431 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2482 3432
2483 evpipe_init (EV_A); 3433#if EV_MULTIPLICITY
3434 assert (("libev: a signal must not be attached to two different loops",
3435 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2484 3436
2485 EV_FREQUENT_CHECK; 3437 signals [w->signum - 1].loop = EV_A;
3438#endif
2486 3439
3440 EV_FREQUENT_CHECK;
3441
3442#if EV_USE_SIGNALFD
3443 if (sigfd == -2)
2487 { 3444 {
2488#ifndef _WIN32 3445 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2489 sigset_t full, prev; 3446 if (sigfd < 0 && errno == EINVAL)
2490 sigfillset (&full); 3447 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2491 sigprocmask (SIG_SETMASK, &full, &prev);
2492#endif
2493 3448
2494 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 3449 if (sigfd >= 0)
3450 {
3451 fd_intern (sigfd); /* doing it twice will not hurt */
2495 3452
2496#ifndef _WIN32 3453 sigemptyset (&sigfd_set);
2497 sigprocmask (SIG_SETMASK, &prev, 0); 3454
2498#endif 3455 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3456 ev_set_priority (&sigfd_w, EV_MAXPRI);
3457 ev_io_start (EV_A_ &sigfd_w);
3458 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3459 }
2499 } 3460 }
3461
3462 if (sigfd >= 0)
3463 {
3464 /* TODO: check .head */
3465 sigaddset (&sigfd_set, w->signum);
3466 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3467
3468 signalfd (sigfd, &sigfd_set, 0);
3469 }
3470#endif
2500 3471
2501 ev_start (EV_A_ (W)w, 1); 3472 ev_start (EV_A_ (W)w, 1);
2502 wlist_add (&signals [w->signum - 1].head, (WL)w); 3473 wlist_add (&signals [w->signum - 1].head, (WL)w);
2503 3474
2504 if (!((WL)w)->next) 3475 if (!((WL)w)->next)
3476# if EV_USE_SIGNALFD
3477 if (sigfd < 0) /*TODO*/
3478# endif
2505 { 3479 {
2506#if _WIN32 3480# ifdef _WIN32
3481 evpipe_init (EV_A);
3482
2507 signal (w->signum, ev_sighandler); 3483 signal (w->signum, ev_sighandler);
2508#else 3484# else
2509 struct sigaction sa; 3485 struct sigaction sa;
3486
3487 evpipe_init (EV_A);
3488
2510 sa.sa_handler = ev_sighandler; 3489 sa.sa_handler = ev_sighandler;
2511 sigfillset (&sa.sa_mask); 3490 sigfillset (&sa.sa_mask);
2512 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3491 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2513 sigaction (w->signum, &sa, 0); 3492 sigaction (w->signum, &sa, 0);
3493
3494 if (origflags & EVFLAG_NOSIGMASK)
3495 {
3496 sigemptyset (&sa.sa_mask);
3497 sigaddset (&sa.sa_mask, w->signum);
3498 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3499 }
2514#endif 3500#endif
2515 } 3501 }
2516 3502
2517 EV_FREQUENT_CHECK; 3503 EV_FREQUENT_CHECK;
2518} 3504}
2519 3505
2520void noinline 3506void noinline
… …
2528 3514
2529 wlist_del (&signals [w->signum - 1].head, (WL)w); 3515 wlist_del (&signals [w->signum - 1].head, (WL)w);
2530 ev_stop (EV_A_ (W)w); 3516 ev_stop (EV_A_ (W)w);
2531 3517
2532 if (!signals [w->signum - 1].head) 3518 if (!signals [w->signum - 1].head)
3519 {
3520#if EV_MULTIPLICITY
3521 signals [w->signum - 1].loop = 0; /* unattach from signal */
3522#endif
3523#if EV_USE_SIGNALFD
3524 if (sigfd >= 0)
3525 {
3526 sigset_t ss;
3527
3528 sigemptyset (&ss);
3529 sigaddset (&ss, w->signum);
3530 sigdelset (&sigfd_set, w->signum);
3531
3532 signalfd (sigfd, &sigfd_set, 0);
3533 sigprocmask (SIG_UNBLOCK, &ss, 0);
3534 }
3535 else
3536#endif
2533 signal (w->signum, SIG_DFL); 3537 signal (w->signum, SIG_DFL);
3538 }
2534 3539
2535 EV_FREQUENT_CHECK; 3540 EV_FREQUENT_CHECK;
2536} 3541}
3542
3543#endif
3544
3545#if EV_CHILD_ENABLE
2537 3546
2538void 3547void
2539ev_child_start (EV_P_ ev_child *w) 3548ev_child_start (EV_P_ ev_child *w)
2540{ 3549{
2541#if EV_MULTIPLICITY 3550#if EV_MULTIPLICITY
… …
2545 return; 3554 return;
2546 3555
2547 EV_FREQUENT_CHECK; 3556 EV_FREQUENT_CHECK;
2548 3557
2549 ev_start (EV_A_ (W)w, 1); 3558 ev_start (EV_A_ (W)w, 1);
2550 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3559 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2551 3560
2552 EV_FREQUENT_CHECK; 3561 EV_FREQUENT_CHECK;
2553} 3562}
2554 3563
2555void 3564void
… …
2559 if (expect_false (!ev_is_active (w))) 3568 if (expect_false (!ev_is_active (w)))
2560 return; 3569 return;
2561 3570
2562 EV_FREQUENT_CHECK; 3571 EV_FREQUENT_CHECK;
2563 3572
2564 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3573 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2565 ev_stop (EV_A_ (W)w); 3574 ev_stop (EV_A_ (W)w);
2566 3575
2567 EV_FREQUENT_CHECK; 3576 EV_FREQUENT_CHECK;
2568} 3577}
3578
3579#endif
2569 3580
2570#if EV_STAT_ENABLE 3581#if EV_STAT_ENABLE
2571 3582
2572# ifdef _WIN32 3583# ifdef _WIN32
2573# undef lstat 3584# undef lstat
… …
2579#define MIN_STAT_INTERVAL 0.1074891 3590#define MIN_STAT_INTERVAL 0.1074891
2580 3591
2581static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3592static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2582 3593
2583#if EV_USE_INOTIFY 3594#if EV_USE_INOTIFY
2584# define EV_INOTIFY_BUFSIZE 8192 3595
3596/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3597# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2585 3598
2586static void noinline 3599static void noinline
2587infy_add (EV_P_ ev_stat *w) 3600infy_add (EV_P_ ev_stat *w)
2588{ 3601{
2589 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); 3602 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);
2590 3603
2591 if (w->wd < 0) 3604 if (w->wd >= 0)
3605 {
3606 struct statfs sfs;
3607
3608 /* now local changes will be tracked by inotify, but remote changes won't */
3609 /* unless the filesystem is known to be local, we therefore still poll */
3610 /* also do poll on <2.6.25, but with normal frequency */
3611
3612 if (!fs_2625)
3613 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3614 else if (!statfs (w->path, &sfs)
3615 && (sfs.f_type == 0x1373 /* devfs */
3616 || sfs.f_type == 0xEF53 /* ext2/3 */
3617 || sfs.f_type == 0x3153464a /* jfs */
3618 || sfs.f_type == 0x52654973 /* reiser3 */
3619 || sfs.f_type == 0x01021994 /* tempfs */
3620 || sfs.f_type == 0x58465342 /* xfs */))
3621 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3622 else
3623 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2592 { 3624 }
3625 else
3626 {
3627 /* can't use inotify, continue to stat */
2593 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3628 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2594 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2595 3629
2596 /* monitor some parent directory for speedup hints */ 3630 /* if path is not there, monitor some parent directory for speedup hints */
2597 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3631 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2598 /* but an efficiency issue only */ 3632 /* but an efficiency issue only */
2599 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3633 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2600 { 3634 {
2601 char path [4096]; 3635 char path [4096];
… …
2611 if (!pend || pend == path) 3645 if (!pend || pend == path)
2612 break; 3646 break;
2613 3647
2614 *pend = 0; 3648 *pend = 0;
2615 w->wd = inotify_add_watch (fs_fd, path, mask); 3649 w->wd = inotify_add_watch (fs_fd, path, mask);
2616 } 3650 }
2617 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3651 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2618 } 3652 }
2619 } 3653 }
2620 3654
2621 if (w->wd >= 0) 3655 if (w->wd >= 0)
2622 {
2623 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3656 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2624 3657
2625 /* now local changes will be tracked by inotify, but remote changes won't */ 3658 /* now re-arm timer, if required */
2626 /* unless the filesystem it known to be local, we therefore still poll */ 3659 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2627 /* also do poll on <2.6.25, but with normal frequency */
2628 struct statfs sfs;
2629
2630 if (fs_2625 && !statfs (w->path, &sfs))
2631 if (sfs.f_type == 0x1373 /* devfs */
2632 || sfs.f_type == 0xEF53 /* ext2/3 */
2633 || sfs.f_type == 0x3153464a /* jfs */
2634 || sfs.f_type == 0x52654973 /* reiser3 */
2635 || sfs.f_type == 0x01021994 /* tempfs */
2636 || sfs.f_type == 0x58465342 /* xfs */)
2637 return;
2638
2639 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2640 ev_timer_again (EV_A_ &w->timer); 3660 ev_timer_again (EV_A_ &w->timer);
2641 } 3661 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2642} 3662}
2643 3663
2644static void noinline 3664static void noinline
2645infy_del (EV_P_ ev_stat *w) 3665infy_del (EV_P_ ev_stat *w)
2646{ 3666{
… …
2649 3669
2650 if (wd < 0) 3670 if (wd < 0)
2651 return; 3671 return;
2652 3672
2653 w->wd = -2; 3673 w->wd = -2;
2654 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3674 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2655 wlist_del (&fs_hash [slot].head, (WL)w); 3675 wlist_del (&fs_hash [slot].head, (WL)w);
2656 3676
2657 /* remove this watcher, if others are watching it, they will rearm */ 3677 /* remove this watcher, if others are watching it, they will rearm */
2658 inotify_rm_watch (fs_fd, wd); 3678 inotify_rm_watch (fs_fd, wd);
2659} 3679}
… …
2661static void noinline 3681static void noinline
2662infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3682infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2663{ 3683{
2664 if (slot < 0) 3684 if (slot < 0)
2665 /* overflow, need to check for all hash slots */ 3685 /* overflow, need to check for all hash slots */
2666 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3686 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2667 infy_wd (EV_A_ slot, wd, ev); 3687 infy_wd (EV_A_ slot, wd, ev);
2668 else 3688 else
2669 { 3689 {
2670 WL w_; 3690 WL w_;
2671 3691
2672 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3692 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2673 { 3693 {
2674 ev_stat *w = (ev_stat *)w_; 3694 ev_stat *w = (ev_stat *)w_;
2675 w_ = w_->next; /* lets us remove this watcher and all before it */ 3695 w_ = w_->next; /* lets us remove this watcher and all before it */
2676 3696
2677 if (w->wd == wd || wd == -1) 3697 if (w->wd == wd || wd == -1)
2678 { 3698 {
2679 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3699 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2680 { 3700 {
2681 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3701 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2682 w->wd = -1; 3702 w->wd = -1;
2683 infy_add (EV_A_ w); /* re-add, no matter what */ 3703 infy_add (EV_A_ w); /* re-add, no matter what */
2684 } 3704 }
2685 3705
2686 stat_timer_cb (EV_A_ &w->timer, 0); 3706 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2691 3711
2692static void 3712static void
2693infy_cb (EV_P_ ev_io *w, int revents) 3713infy_cb (EV_P_ ev_io *w, int revents)
2694{ 3714{
2695 char buf [EV_INOTIFY_BUFSIZE]; 3715 char buf [EV_INOTIFY_BUFSIZE];
2696 struct inotify_event *ev = (struct inotify_event *)buf;
2697 int ofs; 3716 int ofs;
2698 int len = read (fs_fd, buf, sizeof (buf)); 3717 int len = read (fs_fd, buf, sizeof (buf));
2699 3718
2700 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3719 for (ofs = 0; ofs < len; )
3720 {
3721 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2701 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3722 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3723 ofs += sizeof (struct inotify_event) + ev->len;
3724 }
2702} 3725}
2703 3726
2704inline_size void 3727inline_size void ecb_cold
2705check_2625 (EV_P) 3728ev_check_2625 (EV_P)
2706{ 3729{
2707 /* kernels < 2.6.25 are borked 3730 /* kernels < 2.6.25 are borked
2708 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3731 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2709 */ 3732 */
2710 struct utsname buf; 3733 if (ev_linux_version () < 0x020619)
2711 int major, minor, micro;
2712
2713 if (uname (&buf))
2714 return; 3734 return;
2715 3735
2716 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2717 return;
2718
2719 if (major < 2
2720 || (major == 2 && minor < 6)
2721 || (major == 2 && minor == 6 && micro < 25))
2722 return;
2723
2724 fs_2625 = 1; 3736 fs_2625 = 1;
3737}
3738
3739inline_size int
3740infy_newfd (void)
3741{
3742#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3743 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3744 if (fd >= 0)
3745 return fd;
3746#endif
3747 return inotify_init ();
2725} 3748}
2726 3749
2727inline_size void 3750inline_size void
2728infy_init (EV_P) 3751infy_init (EV_P)
2729{ 3752{
2730 if (fs_fd != -2) 3753 if (fs_fd != -2)
2731 return; 3754 return;
2732 3755
2733 fs_fd = -1; 3756 fs_fd = -1;
2734 3757
2735 check_2625 (EV_A); 3758 ev_check_2625 (EV_A);
2736 3759
2737 fs_fd = inotify_init (); 3760 fs_fd = infy_newfd ();
2738 3761
2739 if (fs_fd >= 0) 3762 if (fs_fd >= 0)
2740 { 3763 {
3764 fd_intern (fs_fd);
2741 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3765 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2742 ev_set_priority (&fs_w, EV_MAXPRI); 3766 ev_set_priority (&fs_w, EV_MAXPRI);
2743 ev_io_start (EV_A_ &fs_w); 3767 ev_io_start (EV_A_ &fs_w);
3768 ev_unref (EV_A);
2744 } 3769 }
2745} 3770}
2746 3771
2747inline_size void 3772inline_size void
2748infy_fork (EV_P) 3773infy_fork (EV_P)
… …
2750 int slot; 3775 int slot;
2751 3776
2752 if (fs_fd < 0) 3777 if (fs_fd < 0)
2753 return; 3778 return;
2754 3779
3780 ev_ref (EV_A);
3781 ev_io_stop (EV_A_ &fs_w);
2755 close (fs_fd); 3782 close (fs_fd);
2756 fs_fd = inotify_init (); 3783 fs_fd = infy_newfd ();
2757 3784
3785 if (fs_fd >= 0)
3786 {
3787 fd_intern (fs_fd);
3788 ev_io_set (&fs_w, fs_fd, EV_READ);
3789 ev_io_start (EV_A_ &fs_w);
3790 ev_unref (EV_A);
3791 }
3792
2758 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3793 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2759 { 3794 {
2760 WL w_ = fs_hash [slot].head; 3795 WL w_ = fs_hash [slot].head;
2761 fs_hash [slot].head = 0; 3796 fs_hash [slot].head = 0;
2762 3797
2763 while (w_) 3798 while (w_)
… …
2768 w->wd = -1; 3803 w->wd = -1;
2769 3804
2770 if (fs_fd >= 0) 3805 if (fs_fd >= 0)
2771 infy_add (EV_A_ w); /* re-add, no matter what */ 3806 infy_add (EV_A_ w); /* re-add, no matter what */
2772 else 3807 else
3808 {
3809 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3810 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2773 ev_timer_again (EV_A_ &w->timer); 3811 ev_timer_again (EV_A_ &w->timer);
3812 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3813 }
2774 } 3814 }
2775 } 3815 }
2776} 3816}
2777 3817
2778#endif 3818#endif
… …
2795static void noinline 3835static void noinline
2796stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3836stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2797{ 3837{
2798 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3838 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2799 3839
2800 /* we copy this here each the time so that */ 3840 ev_statdata prev = w->attr;
2801 /* prev has the old value when the callback gets invoked */
2802 w->prev = w->attr;
2803 ev_stat_stat (EV_A_ w); 3841 ev_stat_stat (EV_A_ w);
2804 3842
2805 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3843 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2806 if ( 3844 if (
2807 w->prev.st_dev != w->attr.st_dev 3845 prev.st_dev != w->attr.st_dev
2808 || w->prev.st_ino != w->attr.st_ino 3846 || prev.st_ino != w->attr.st_ino
2809 || w->prev.st_mode != w->attr.st_mode 3847 || prev.st_mode != w->attr.st_mode
2810 || w->prev.st_nlink != w->attr.st_nlink 3848 || prev.st_nlink != w->attr.st_nlink
2811 || w->prev.st_uid != w->attr.st_uid 3849 || prev.st_uid != w->attr.st_uid
2812 || w->prev.st_gid != w->attr.st_gid 3850 || prev.st_gid != w->attr.st_gid
2813 || w->prev.st_rdev != w->attr.st_rdev 3851 || prev.st_rdev != w->attr.st_rdev
2814 || w->prev.st_size != w->attr.st_size 3852 || prev.st_size != w->attr.st_size
2815 || w->prev.st_atime != w->attr.st_atime 3853 || prev.st_atime != w->attr.st_atime
2816 || w->prev.st_mtime != w->attr.st_mtime 3854 || prev.st_mtime != w->attr.st_mtime
2817 || w->prev.st_ctime != w->attr.st_ctime 3855 || prev.st_ctime != w->attr.st_ctime
2818 ) { 3856 ) {
3857 /* we only update w->prev on actual differences */
3858 /* in case we test more often than invoke the callback, */
3859 /* to ensure that prev is always different to attr */
3860 w->prev = prev;
3861
2819 #if EV_USE_INOTIFY 3862 #if EV_USE_INOTIFY
2820 if (fs_fd >= 0) 3863 if (fs_fd >= 0)
2821 { 3864 {
2822 infy_del (EV_A_ w); 3865 infy_del (EV_A_ w);
2823 infy_add (EV_A_ w); 3866 infy_add (EV_A_ w);
… …
2848 3891
2849 if (fs_fd >= 0) 3892 if (fs_fd >= 0)
2850 infy_add (EV_A_ w); 3893 infy_add (EV_A_ w);
2851 else 3894 else
2852#endif 3895#endif
3896 {
2853 ev_timer_again (EV_A_ &w->timer); 3897 ev_timer_again (EV_A_ &w->timer);
3898 ev_unref (EV_A);
3899 }
2854 3900
2855 ev_start (EV_A_ (W)w, 1); 3901 ev_start (EV_A_ (W)w, 1);
2856 3902
2857 EV_FREQUENT_CHECK; 3903 EV_FREQUENT_CHECK;
2858} 3904}
… …
2867 EV_FREQUENT_CHECK; 3913 EV_FREQUENT_CHECK;
2868 3914
2869#if EV_USE_INOTIFY 3915#if EV_USE_INOTIFY
2870 infy_del (EV_A_ w); 3916 infy_del (EV_A_ w);
2871#endif 3917#endif
3918
3919 if (ev_is_active (&w->timer))
3920 {
3921 ev_ref (EV_A);
2872 ev_timer_stop (EV_A_ &w->timer); 3922 ev_timer_stop (EV_A_ &w->timer);
3923 }
2873 3924
2874 ev_stop (EV_A_ (W)w); 3925 ev_stop (EV_A_ (W)w);
2875 3926
2876 EV_FREQUENT_CHECK; 3927 EV_FREQUENT_CHECK;
2877} 3928}
… …
2922 3973
2923 EV_FREQUENT_CHECK; 3974 EV_FREQUENT_CHECK;
2924} 3975}
2925#endif 3976#endif
2926 3977
3978#if EV_PREPARE_ENABLE
2927void 3979void
2928ev_prepare_start (EV_P_ ev_prepare *w) 3980ev_prepare_start (EV_P_ ev_prepare *w)
2929{ 3981{
2930 if (expect_false (ev_is_active (w))) 3982 if (expect_false (ev_is_active (w)))
2931 return; 3983 return;
… …
2957 4009
2958 ev_stop (EV_A_ (W)w); 4010 ev_stop (EV_A_ (W)w);
2959 4011
2960 EV_FREQUENT_CHECK; 4012 EV_FREQUENT_CHECK;
2961} 4013}
4014#endif
2962 4015
4016#if EV_CHECK_ENABLE
2963void 4017void
2964ev_check_start (EV_P_ ev_check *w) 4018ev_check_start (EV_P_ ev_check *w)
2965{ 4019{
2966 if (expect_false (ev_is_active (w))) 4020 if (expect_false (ev_is_active (w)))
2967 return; 4021 return;
… …
2993 4047
2994 ev_stop (EV_A_ (W)w); 4048 ev_stop (EV_A_ (W)w);
2995 4049
2996 EV_FREQUENT_CHECK; 4050 EV_FREQUENT_CHECK;
2997} 4051}
4052#endif
2998 4053
2999#if EV_EMBED_ENABLE 4054#if EV_EMBED_ENABLE
3000void noinline 4055void noinline
3001ev_embed_sweep (EV_P_ ev_embed *w) 4056ev_embed_sweep (EV_P_ ev_embed *w)
3002{ 4057{
3003 ev_loop (w->other, EVLOOP_NONBLOCK); 4058 ev_run (w->other, EVRUN_NOWAIT);
3004} 4059}
3005 4060
3006static void 4061static void
3007embed_io_cb (EV_P_ ev_io *io, int revents) 4062embed_io_cb (EV_P_ ev_io *io, int revents)
3008{ 4063{
3009 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4064 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3010 4065
3011 if (ev_cb (w)) 4066 if (ev_cb (w))
3012 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4067 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3013 else 4068 else
3014 ev_loop (w->other, EVLOOP_NONBLOCK); 4069 ev_run (w->other, EVRUN_NOWAIT);
3015} 4070}
3016 4071
3017static void 4072static void
3018embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4073embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3019{ 4074{
3020 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4075 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3021 4076
3022 { 4077 {
3023 struct ev_loop *loop = w->other; 4078 EV_P = w->other;
3024 4079
3025 while (fdchangecnt) 4080 while (fdchangecnt)
3026 { 4081 {
3027 fd_reify (EV_A); 4082 fd_reify (EV_A);
3028 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4083 ev_run (EV_A_ EVRUN_NOWAIT);
3029 } 4084 }
3030 } 4085 }
3031} 4086}
3032 4087
3033static void 4088static void
… …
3036 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 4091 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3037 4092
3038 ev_embed_stop (EV_A_ w); 4093 ev_embed_stop (EV_A_ w);
3039 4094
3040 { 4095 {
3041 struct ev_loop *loop = w->other; 4096 EV_P = w->other;
3042 4097
3043 ev_loop_fork (EV_A); 4098 ev_loop_fork (EV_A);
3044 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4099 ev_run (EV_A_ EVRUN_NOWAIT);
3045 } 4100 }
3046 4101
3047 ev_embed_start (EV_A_ w); 4102 ev_embed_start (EV_A_ w);
3048} 4103}
3049 4104
… …
3060{ 4115{
3061 if (expect_false (ev_is_active (w))) 4116 if (expect_false (ev_is_active (w)))
3062 return; 4117 return;
3063 4118
3064 { 4119 {
3065 struct ev_loop *loop = w->other; 4120 EV_P = w->other;
3066 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4121 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3067 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4122 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3068 } 4123 }
3069 4124
3070 EV_FREQUENT_CHECK; 4125 EV_FREQUENT_CHECK;
… …
3097 4152
3098 ev_io_stop (EV_A_ &w->io); 4153 ev_io_stop (EV_A_ &w->io);
3099 ev_prepare_stop (EV_A_ &w->prepare); 4154 ev_prepare_stop (EV_A_ &w->prepare);
3100 ev_fork_stop (EV_A_ &w->fork); 4155 ev_fork_stop (EV_A_ &w->fork);
3101 4156
4157 ev_stop (EV_A_ (W)w);
4158
3102 EV_FREQUENT_CHECK; 4159 EV_FREQUENT_CHECK;
3103} 4160}
3104#endif 4161#endif
3105 4162
3106#if EV_FORK_ENABLE 4163#if EV_FORK_ENABLE
… …
3139 4196
3140 EV_FREQUENT_CHECK; 4197 EV_FREQUENT_CHECK;
3141} 4198}
3142#endif 4199#endif
3143 4200
4201#if EV_CLEANUP_ENABLE
4202void
4203ev_cleanup_start (EV_P_ ev_cleanup *w)
4204{
4205 if (expect_false (ev_is_active (w)))
4206 return;
4207
4208 EV_FREQUENT_CHECK;
4209
4210 ev_start (EV_A_ (W)w, ++cleanupcnt);
4211 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4212 cleanups [cleanupcnt - 1] = w;
4213
4214 /* cleanup watchers should never keep a refcount on the loop */
4215 ev_unref (EV_A);
4216 EV_FREQUENT_CHECK;
4217}
4218
4219void
4220ev_cleanup_stop (EV_P_ ev_cleanup *w)
4221{
4222 clear_pending (EV_A_ (W)w);
4223 if (expect_false (!ev_is_active (w)))
4224 return;
4225
4226 EV_FREQUENT_CHECK;
4227 ev_ref (EV_A);
4228
4229 {
4230 int active = ev_active (w);
4231
4232 cleanups [active - 1] = cleanups [--cleanupcnt];
4233 ev_active (cleanups [active - 1]) = active;
4234 }
4235
4236 ev_stop (EV_A_ (W)w);
4237
4238 EV_FREQUENT_CHECK;
4239}
4240#endif
4241
3144#if EV_ASYNC_ENABLE 4242#if EV_ASYNC_ENABLE
3145void 4243void
3146ev_async_start (EV_P_ ev_async *w) 4244ev_async_start (EV_P_ ev_async *w)
3147{ 4245{
3148 if (expect_false (ev_is_active (w))) 4246 if (expect_false (ev_is_active (w)))
3149 return; 4247 return;
3150 4248
4249 w->sent = 0;
4250
3151 evpipe_init (EV_A); 4251 evpipe_init (EV_A);
3152 4252
3153 EV_FREQUENT_CHECK; 4253 EV_FREQUENT_CHECK;
3154 4254
3155 ev_start (EV_A_ (W)w, ++asynccnt); 4255 ev_start (EV_A_ (W)w, ++asynccnt);
… …
3182 4282
3183void 4283void
3184ev_async_send (EV_P_ ev_async *w) 4284ev_async_send (EV_P_ ev_async *w)
3185{ 4285{
3186 w->sent = 1; 4286 w->sent = 1;
3187 evpipe_write (EV_A_ &gotasync); 4287 evpipe_write (EV_A_ &async_pending);
3188} 4288}
3189#endif 4289#endif
3190 4290
3191/*****************************************************************************/ 4291/*****************************************************************************/
3192 4292
… …
3232{ 4332{
3233 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4333 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3234 4334
3235 if (expect_false (!once)) 4335 if (expect_false (!once))
3236 { 4336 {
3237 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4337 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3238 return; 4338 return;
3239 } 4339 }
3240 4340
3241 once->cb = cb; 4341 once->cb = cb;
3242 once->arg = arg; 4342 once->arg = arg;
… …
3257} 4357}
3258 4358
3259/*****************************************************************************/ 4359/*****************************************************************************/
3260 4360
3261#if EV_WALK_ENABLE 4361#if EV_WALK_ENABLE
3262void 4362void ecb_cold
3263ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4363ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3264{ 4364{
3265 int i, j; 4365 int i, j;
3266 ev_watcher_list *wl, *wn; 4366 ev_watcher_list *wl, *wn;
3267 4367
… …
3311 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4411 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3312#endif 4412#endif
3313 4413
3314#if EV_IDLE_ENABLE 4414#if EV_IDLE_ENABLE
3315 if (types & EV_IDLE) 4415 if (types & EV_IDLE)
3316 for (j = NUMPRI; i--; ) 4416 for (j = NUMPRI; j--; )
3317 for (i = idlecnt [j]; i--; ) 4417 for (i = idlecnt [j]; i--; )
3318 cb (EV_A_ EV_IDLE, idles [j][i]); 4418 cb (EV_A_ EV_IDLE, idles [j][i]);
3319#endif 4419#endif
3320 4420
3321#if EV_FORK_ENABLE 4421#if EV_FORK_ENABLE
… …
3329 if (types & EV_ASYNC) 4429 if (types & EV_ASYNC)
3330 for (i = asynccnt; i--; ) 4430 for (i = asynccnt; i--; )
3331 cb (EV_A_ EV_ASYNC, asyncs [i]); 4431 cb (EV_A_ EV_ASYNC, asyncs [i]);
3332#endif 4432#endif
3333 4433
4434#if EV_PREPARE_ENABLE
3334 if (types & EV_PREPARE) 4435 if (types & EV_PREPARE)
3335 for (i = preparecnt; i--; ) 4436 for (i = preparecnt; i--; )
3336#if EV_EMBED_ENABLE 4437# if EV_EMBED_ENABLE
3337 if (ev_cb (prepares [i]) != embed_prepare_cb) 4438 if (ev_cb (prepares [i]) != embed_prepare_cb)
3338#endif 4439# endif
3339 cb (EV_A_ EV_PREPARE, prepares [i]); 4440 cb (EV_A_ EV_PREPARE, prepares [i]);
4441#endif
3340 4442
4443#if EV_CHECK_ENABLE
3341 if (types & EV_CHECK) 4444 if (types & EV_CHECK)
3342 for (i = checkcnt; i--; ) 4445 for (i = checkcnt; i--; )
3343 cb (EV_A_ EV_CHECK, checks [i]); 4446 cb (EV_A_ EV_CHECK, checks [i]);
4447#endif
3344 4448
4449#if EV_SIGNAL_ENABLE
3345 if (types & EV_SIGNAL) 4450 if (types & EV_SIGNAL)
3346 for (i = 0; i < signalmax; ++i) 4451 for (i = 0; i < EV_NSIG - 1; ++i)
3347 for (wl = signals [i].head; wl; ) 4452 for (wl = signals [i].head; wl; )
3348 { 4453 {
3349 wn = wl->next; 4454 wn = wl->next;
3350 cb (EV_A_ EV_SIGNAL, wl); 4455 cb (EV_A_ EV_SIGNAL, wl);
3351 wl = wn; 4456 wl = wn;
3352 } 4457 }
4458#endif
3353 4459
4460#if EV_CHILD_ENABLE
3354 if (types & EV_CHILD) 4461 if (types & EV_CHILD)
3355 for (i = EV_PID_HASHSIZE; i--; ) 4462 for (i = (EV_PID_HASHSIZE); i--; )
3356 for (wl = childs [i]; wl; ) 4463 for (wl = childs [i]; wl; )
3357 { 4464 {
3358 wn = wl->next; 4465 wn = wl->next;
3359 cb (EV_A_ EV_CHILD, wl); 4466 cb (EV_A_ EV_CHILD, wl);
3360 wl = wn; 4467 wl = wn;
3361 } 4468 }
4469#endif
3362/* EV_STAT 0x00001000 /* stat data changed */ 4470/* EV_STAT 0x00001000 /* stat data changed */
3363/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4471/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3364} 4472}
3365#endif 4473#endif
3366 4474
3367#if EV_MULTIPLICITY 4475#if EV_MULTIPLICITY
3368 #include "ev_wrap.h" 4476 #include "ev_wrap.h"
3369#endif 4477#endif
3370 4478
3371#ifdef __cplusplus
3372}
3373#endif
3374

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