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Comparing libev/ev.c (file contents):
Revision 1.289 by root, Sat Jun 6 11:13:16 2009 UTC vs.
Revision 1.412 by root, Wed Feb 22 01:53:00 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
… …
57# endif 59# endif
58# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
60# endif 62# endif
61# endif 63# endif
64# elif !defined(EV_USE_CLOCK_SYSCALL)
65# define EV_USE_CLOCK_SYSCALL 0
62# endif 66# endif
63 67
64# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
65# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
66# define EV_USE_MONOTONIC 1 70# define EV_USE_MONOTONIC 1
… …
75# ifndef EV_USE_REALTIME 79# ifndef EV_USE_REALTIME
76# define EV_USE_REALTIME 0 80# define EV_USE_REALTIME 0
77# endif 81# endif
78# endif 82# endif
79 83
84# if HAVE_NANOSLEEP
80# ifndef EV_USE_NANOSLEEP 85# ifndef EV_USE_NANOSLEEP
81# if HAVE_NANOSLEEP
82# define EV_USE_NANOSLEEP 1 86# define EV_USE_NANOSLEEP EV_FEATURE_OS
87# endif
83# else 88# else
89# undef EV_USE_NANOSLEEP
84# 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
85# endif 96# endif
97# else
98# undef EV_USE_SELECT
99# define EV_USE_SELECT 0
86# endif 100# endif
87 101
102# if HAVE_POLL && HAVE_POLL_H
88# ifndef EV_USE_SELECT 103# ifndef EV_USE_POLL
89# if HAVE_SELECT && HAVE_SYS_SELECT_H 104# define EV_USE_POLL EV_FEATURE_BACKENDS
90# define EV_USE_SELECT 1
91# else
92# define EV_USE_SELECT 0
93# endif 105# endif
94# endif
95
96# ifndef EV_USE_POLL
97# if HAVE_POLL && HAVE_POLL_H
98# define EV_USE_POLL 1
99# else 106# else
107# undef EV_USE_POLL
100# define EV_USE_POLL 0 108# define EV_USE_POLL 0
101# endif
102# endif 109# endif
103 110
104# ifndef EV_USE_EPOLL
105# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 111# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
106# define EV_USE_EPOLL 1 112# ifndef EV_USE_EPOLL
107# else 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
108# define EV_USE_EPOLL 0
109# endif 114# endif
115# else
116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0
110# endif 118# endif
111 119
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
112# ifndef EV_USE_KQUEUE 121# ifndef EV_USE_KQUEUE
113# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
114# define EV_USE_KQUEUE 1
115# else
116# define EV_USE_KQUEUE 0
117# endif 123# endif
124# else
125# undef EV_USE_KQUEUE
126# define EV_USE_KQUEUE 0
118# endif 127# endif
119 128
120# ifndef EV_USE_PORT
121# if HAVE_PORT_H && HAVE_PORT_CREATE 129# if HAVE_PORT_H && HAVE_PORT_CREATE
122# define EV_USE_PORT 1 130# ifndef EV_USE_PORT
123# else 131# define EV_USE_PORT EV_FEATURE_BACKENDS
124# define EV_USE_PORT 0
125# endif 132# endif
133# else
134# undef EV_USE_PORT
135# define EV_USE_PORT 0
126# endif 136# endif
127 137
128# ifndef EV_USE_INOTIFY
129# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 138# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
130# define EV_USE_INOTIFY 1 139# ifndef EV_USE_INOTIFY
131# else
132# define EV_USE_INOTIFY 0 140# define EV_USE_INOTIFY EV_FEATURE_OS
133# endif 141# endif
142# else
143# undef EV_USE_INOTIFY
144# define EV_USE_INOTIFY 0
134# endif 145# endif
135 146
147# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
136# ifndef EV_USE_EVENTFD 148# ifndef EV_USE_SIGNALFD
137# if HAVE_EVENTFD 149# define EV_USE_SIGNALFD EV_FEATURE_OS
138# define EV_USE_EVENTFD 1
139# else
140# define EV_USE_EVENTFD 0
141# 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
142# endif 163# endif
143 164
144#endif 165#endif
145 166
146#include <math.h>
147#include <stdlib.h> 167#include <stdlib.h>
168#include <string.h>
148#include <fcntl.h> 169#include <fcntl.h>
149#include <stddef.h> 170#include <stddef.h>
150 171
151#include <stdio.h> 172#include <stdio.h>
152 173
153#include <assert.h> 174#include <assert.h>
154#include <errno.h> 175#include <errno.h>
155#include <sys/types.h> 176#include <sys/types.h>
156#include <time.h> 177#include <time.h>
178#include <limits.h>
157 179
158#include <signal.h> 180#include <signal.h>
159 181
160#ifdef EV_H 182#ifdef EV_H
161# include EV_H 183# include EV_H
162#else 184#else
163# 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
164#endif 197#endif
165 198
166#ifndef _WIN32 199#ifndef _WIN32
167# include <sys/time.h> 200# include <sys/time.h>
168# include <sys/wait.h> 201# include <sys/wait.h>
… …
172# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
173# include <windows.h> 206# include <windows.h>
174# ifndef EV_SELECT_IS_WINSOCKET 207# ifndef EV_SELECT_IS_WINSOCKET
175# define EV_SELECT_IS_WINSOCKET 1 208# define EV_SELECT_IS_WINSOCKET 1
176# endif 209# endif
210# undef EV_AVOID_STDIO
177#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
178 220
179/* 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
180 254
181#ifndef EV_USE_CLOCK_SYSCALL 255#ifndef EV_USE_CLOCK_SYSCALL
182# if __linux && __GLIBC__ >= 2 256# if __linux && __GLIBC__ >= 2
183# define EV_USE_CLOCK_SYSCALL 1 257# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
184# else 258# else
185# define EV_USE_CLOCK_SYSCALL 0 259# define EV_USE_CLOCK_SYSCALL 0
186# endif 260# endif
187#endif 261#endif
188 262
189#ifndef EV_USE_MONOTONIC 263#ifndef EV_USE_MONOTONIC
190# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 264# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
191# define EV_USE_MONOTONIC 1 265# define EV_USE_MONOTONIC EV_FEATURE_OS
192# else 266# else
193# define EV_USE_MONOTONIC 0 267# define EV_USE_MONOTONIC 0
194# endif 268# endif
195#endif 269#endif
196 270
… …
198# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 272# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
199#endif 273#endif
200 274
201#ifndef EV_USE_NANOSLEEP 275#ifndef EV_USE_NANOSLEEP
202# if _POSIX_C_SOURCE >= 199309L 276# if _POSIX_C_SOURCE >= 199309L
203# define EV_USE_NANOSLEEP 1 277# define EV_USE_NANOSLEEP EV_FEATURE_OS
204# else 278# else
205# define EV_USE_NANOSLEEP 0 279# define EV_USE_NANOSLEEP 0
206# endif 280# endif
207#endif 281#endif
208 282
209#ifndef EV_USE_SELECT 283#ifndef EV_USE_SELECT
210# define EV_USE_SELECT 1 284# define EV_USE_SELECT EV_FEATURE_BACKENDS
211#endif 285#endif
212 286
213#ifndef EV_USE_POLL 287#ifndef EV_USE_POLL
214# ifdef _WIN32 288# ifdef _WIN32
215# define EV_USE_POLL 0 289# define EV_USE_POLL 0
216# else 290# else
217# define EV_USE_POLL 1 291# define EV_USE_POLL EV_FEATURE_BACKENDS
218# endif 292# endif
219#endif 293#endif
220 294
221#ifndef EV_USE_EPOLL 295#ifndef EV_USE_EPOLL
222# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 296# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
223# define EV_USE_EPOLL 1 297# define EV_USE_EPOLL EV_FEATURE_BACKENDS
224# else 298# else
225# define EV_USE_EPOLL 0 299# define EV_USE_EPOLL 0
226# endif 300# endif
227#endif 301#endif
228 302
… …
234# define EV_USE_PORT 0 308# define EV_USE_PORT 0
235#endif 309#endif
236 310
237#ifndef EV_USE_INOTIFY 311#ifndef EV_USE_INOTIFY
238# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 312# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
239# define EV_USE_INOTIFY 1 313# define EV_USE_INOTIFY EV_FEATURE_OS
240# else 314# else
241# define EV_USE_INOTIFY 0 315# define EV_USE_INOTIFY 0
242# endif 316# endif
243#endif 317#endif
244 318
245#ifndef EV_PID_HASHSIZE 319#ifndef EV_PID_HASHSIZE
246# if EV_MINIMAL 320# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
247# define EV_PID_HASHSIZE 1
248# else
249# define EV_PID_HASHSIZE 16
250# endif
251#endif 321#endif
252 322
253#ifndef EV_INOTIFY_HASHSIZE 323#ifndef EV_INOTIFY_HASHSIZE
254# if EV_MINIMAL 324# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
255# define EV_INOTIFY_HASHSIZE 1
256# else
257# define EV_INOTIFY_HASHSIZE 16
258# endif
259#endif 325#endif
260 326
261#ifndef EV_USE_EVENTFD 327#ifndef EV_USE_EVENTFD
262# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 328# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
263# define EV_USE_EVENTFD 1 329# define EV_USE_EVENTFD EV_FEATURE_OS
264# else 330# else
265# 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
266# endif 340# endif
267#endif 341#endif
268 342
269#if 0 /* debugging */ 343#if 0 /* debugging */
270# define EV_VERIFY 3 344# define EV_VERIFY 3
271# define EV_USE_4HEAP 1 345# define EV_USE_4HEAP 1
272# define EV_HEAP_CACHE_AT 1 346# define EV_HEAP_CACHE_AT 1
273#endif 347#endif
274 348
275#ifndef EV_VERIFY 349#ifndef EV_VERIFY
276# define EV_VERIFY !EV_MINIMAL 350# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
277#endif 351#endif
278 352
279#ifndef EV_USE_4HEAP 353#ifndef EV_USE_4HEAP
280# define EV_USE_4HEAP !EV_MINIMAL 354# define EV_USE_4HEAP EV_FEATURE_DATA
281#endif 355#endif
282 356
283#ifndef EV_HEAP_CACHE_AT 357#ifndef EV_HEAP_CACHE_AT
284# define EV_HEAP_CACHE_AT !EV_MINIMAL 358# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
359#endif
360
361/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
362/* which makes programs even slower. might work on other unices, too. */
363#if EV_USE_CLOCK_SYSCALL
364# include <syscall.h>
365# ifdef SYS_clock_gettime
366# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
367# undef EV_USE_MONOTONIC
368# define EV_USE_MONOTONIC 1
369# else
370# undef EV_USE_CLOCK_SYSCALL
371# define EV_USE_CLOCK_SYSCALL 0
372# endif
285#endif 373#endif
286 374
287/* 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 */
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
288 382
289#ifndef CLOCK_MONOTONIC 383#ifndef CLOCK_MONOTONIC
290# undef EV_USE_MONOTONIC 384# undef EV_USE_MONOTONIC
291# define EV_USE_MONOTONIC 0 385# define EV_USE_MONOTONIC 0
292#endif 386#endif
… …
300# undef EV_USE_INOTIFY 394# undef EV_USE_INOTIFY
301# define EV_USE_INOTIFY 0 395# define EV_USE_INOTIFY 0
302#endif 396#endif
303 397
304#if !EV_USE_NANOSLEEP 398#if !EV_USE_NANOSLEEP
305# ifndef _WIN32 399/* hp-ux has it in sys/time.h, which we unconditionally include above */
400# if !defined(_WIN32) && !defined(__hpux)
306# include <sys/select.h> 401# include <sys/select.h>
307# endif 402# endif
308#endif 403#endif
309 404
310#if EV_USE_INOTIFY 405#if EV_USE_INOTIFY
311# include <sys/utsname.h>
312# include <sys/statfs.h> 406# include <sys/statfs.h>
313# include <sys/inotify.h> 407# include <sys/inotify.h>
314/* 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 */
315# ifndef IN_DONT_FOLLOW 409# ifndef IN_DONT_FOLLOW
316# undef EV_USE_INOTIFY 410# undef EV_USE_INOTIFY
… …
320 414
321#if EV_SELECT_IS_WINSOCKET 415#if EV_SELECT_IS_WINSOCKET
322# include <winsock.h> 416# include <winsock.h>
323#endif 417#endif
324 418
325/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
326/* which makes programs even slower. might work on other unices, too. */
327#if EV_USE_CLOCK_SYSCALL
328# include <syscall.h>
329# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
330# undef EV_USE_MONOTONIC
331# define EV_USE_MONOTONIC 1
332#endif
333
334#if EV_USE_EVENTFD 419#if EV_USE_EVENTFD
335/* 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 */
336# include <stdint.h> 421# include <stdint.h>
337# ifdef __cplusplus 422# ifndef EFD_NONBLOCK
338extern "C" { 423# define EFD_NONBLOCK O_NONBLOCK
339# endif 424# endif
340int eventfd (unsigned int initval, int flags); 425# ifndef EFD_CLOEXEC
341# ifdef __cplusplus 426# ifdef O_CLOEXEC
342} 427# define EFD_CLOEXEC O_CLOEXEC
428# else
429# define EFD_CLOEXEC 02000000
430# endif
343# 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};
344#endif 455#endif
345 456
346/**/ 457/**/
347 458
348#if EV_VERIFY >= 3 459#if EV_VERIFY >= 3
349# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 460# define EV_FREQUENT_CHECK ev_verify (EV_A)
350#else 461#else
351# define EV_FREQUENT_CHECK do { } while (0) 462# define EV_FREQUENT_CHECK do { } while (0)
352#endif 463#endif
353 464
354/* 465/*
355 * This is used to avoid floating point rounding problems. 466 * This is used to work around floating point rounding problems.
356 * It is added to ev_rt_now when scheduling periodics
357 * to ensure progress, time-wise, even when rounding
358 * errors are against us.
359 * This value is good at least till the year 4000. 467 * This value is good at least till the year 4000.
360 * Better solutions welcome.
361 */ 468 */
362#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 */
363 471
364#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) */
365#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) */
366/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
367 474
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;
368#if __GNUC__ >= 4 519 #if __GNUC__
369# define expect(expr,value) __builtin_expect ((expr),(value)) 520 typedef signed long long int64_t;
370# 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
371#else 526#else
372# define expect(expr,value) (expr) 527 #include <inttypes.h>
373# define noinline
374# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
375# define inline
376# 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)))
377#endif 542 #endif
543#endif
378 544
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 #elif defined(__mips__)
583 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
584 #endif
585 #endif
586#endif
587
588#ifndef ECB_MEMORY_FENCE
589 #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER) || defined(__clang__)
590 #define ECB_MEMORY_FENCE __sync_synchronize ()
591 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */
592 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */
593 #elif _MSC_VER >= 1400 /* VC++ 2005 */
594 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
595 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
596 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
597 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
598 #elif defined(_WIN32)
599 #include <WinNT.h>
600 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
601 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
602 #include <mbarrier.h>
603 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
604 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
605 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
606 #endif
607#endif
608
609#ifndef ECB_MEMORY_FENCE
610 #if !ECB_AVOID_PTHREADS
611 /*
612 * if you get undefined symbol references to pthread_mutex_lock,
613 * or failure to find pthread.h, then you should implement
614 * the ECB_MEMORY_FENCE operations for your cpu/compiler
615 * OR provide pthread.h and link against the posix thread library
616 * of your system.
617 */
618 #include <pthread.h>
619 #define ECB_NEEDS_PTHREADS 1
620 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
621
622 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
623 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
624 #endif
625#endif
626
627#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE)
628 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
629#endif
630
631#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE)
632 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
633#endif
634
635/*****************************************************************************/
636
637#define ECB_C99 (__STDC_VERSION__ >= 199901L)
638
639#if __cplusplus
640 #define ecb_inline static inline
641#elif ECB_GCC_VERSION(2,5)
642 #define ecb_inline static __inline__
643#elif ECB_C99
644 #define ecb_inline static inline
645#else
646 #define ecb_inline static
647#endif
648
649#if ECB_GCC_VERSION(3,3)
650 #define ecb_restrict __restrict__
651#elif ECB_C99
652 #define ecb_restrict restrict
653#else
654 #define ecb_restrict
655#endif
656
657typedef int ecb_bool;
658
659#define ECB_CONCAT_(a, b) a ## b
660#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
661#define ECB_STRINGIFY_(a) # a
662#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
663
664#define ecb_function_ ecb_inline
665
666#if ECB_GCC_VERSION(3,1)
667 #define ecb_attribute(attrlist) __attribute__(attrlist)
668 #define ecb_is_constant(expr) __builtin_constant_p (expr)
669 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
670 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
671#else
672 #define ecb_attribute(attrlist)
673 #define ecb_is_constant(expr) 0
674 #define ecb_expect(expr,value) (expr)
675 #define ecb_prefetch(addr,rw,locality)
676#endif
677
678/* no emulation for ecb_decltype */
679#if ECB_GCC_VERSION(4,5)
680 #define ecb_decltype(x) __decltype(x)
681#elif ECB_GCC_VERSION(3,0)
682 #define ecb_decltype(x) __typeof(x)
683#endif
684
685#define ecb_noinline ecb_attribute ((__noinline__))
686#define ecb_noreturn ecb_attribute ((__noreturn__))
687#define ecb_unused ecb_attribute ((__unused__))
688#define ecb_const ecb_attribute ((__const__))
689#define ecb_pure ecb_attribute ((__pure__))
690
691#if ECB_GCC_VERSION(4,3)
692 #define ecb_artificial ecb_attribute ((__artificial__))
693 #define ecb_hot ecb_attribute ((__hot__))
694 #define ecb_cold ecb_attribute ((__cold__))
695#else
696 #define ecb_artificial
697 #define ecb_hot
698 #define ecb_cold
699#endif
700
701/* put around conditional expressions if you are very sure that the */
702/* expression is mostly true or mostly false. note that these return */
703/* booleans, not the expression. */
379#define expect_false(expr) expect ((expr) != 0, 0) 704#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
380#define expect_true(expr) expect ((expr) != 0, 1) 705#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
706/* for compatibility to the rest of the world */
707#define ecb_likely(expr) ecb_expect_true (expr)
708#define ecb_unlikely(expr) ecb_expect_false (expr)
709
710/* count trailing zero bits and count # of one bits */
711#if ECB_GCC_VERSION(3,4)
712 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
713 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
714 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
715 #define ecb_ctz32(x) __builtin_ctz (x)
716 #define ecb_ctz64(x) __builtin_ctzll (x)
717 #define ecb_popcount32(x) __builtin_popcount (x)
718 /* no popcountll */
719#else
720 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
721 ecb_function_ int
722 ecb_ctz32 (uint32_t x)
723 {
724 int r = 0;
725
726 x &= ~x + 1; /* this isolates the lowest bit */
727
728#if ECB_branchless_on_i386
729 r += !!(x & 0xaaaaaaaa) << 0;
730 r += !!(x & 0xcccccccc) << 1;
731 r += !!(x & 0xf0f0f0f0) << 2;
732 r += !!(x & 0xff00ff00) << 3;
733 r += !!(x & 0xffff0000) << 4;
734#else
735 if (x & 0xaaaaaaaa) r += 1;
736 if (x & 0xcccccccc) r += 2;
737 if (x & 0xf0f0f0f0) r += 4;
738 if (x & 0xff00ff00) r += 8;
739 if (x & 0xffff0000) r += 16;
740#endif
741
742 return r;
743 }
744
745 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
746 ecb_function_ int
747 ecb_ctz64 (uint64_t x)
748 {
749 int shift = x & 0xffffffffU ? 0 : 32;
750 return ecb_ctz32 (x >> shift) + shift;
751 }
752
753 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
754 ecb_function_ int
755 ecb_popcount32 (uint32_t x)
756 {
757 x -= (x >> 1) & 0x55555555;
758 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
759 x = ((x >> 4) + x) & 0x0f0f0f0f;
760 x *= 0x01010101;
761
762 return x >> 24;
763 }
764
765 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
766 ecb_function_ int ecb_ld32 (uint32_t x)
767 {
768 int r = 0;
769
770 if (x >> 16) { x >>= 16; r += 16; }
771 if (x >> 8) { x >>= 8; r += 8; }
772 if (x >> 4) { x >>= 4; r += 4; }
773 if (x >> 2) { x >>= 2; r += 2; }
774 if (x >> 1) { r += 1; }
775
776 return r;
777 }
778
779 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
780 ecb_function_ int ecb_ld64 (uint64_t x)
781 {
782 int r = 0;
783
784 if (x >> 32) { x >>= 32; r += 32; }
785
786 return r + ecb_ld32 (x);
787 }
788#endif
789
790ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
791ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
792{
793 return ( (x * 0x0802U & 0x22110U)
794 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
795}
796
797ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
798ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
799{
800 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
801 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
802 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
803 x = ( x >> 8 ) | ( x << 8);
804
805 return x;
806}
807
808ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
809ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
810{
811 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
812 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
813 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
814 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
815 x = ( x >> 16 ) | ( x << 16);
816
817 return x;
818}
819
820/* popcount64 is only available on 64 bit cpus as gcc builtin */
821/* so for this version we are lazy */
822ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
823ecb_function_ int
824ecb_popcount64 (uint64_t x)
825{
826 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
827}
828
829ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
830ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
831ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
832ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
833ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
834ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
835ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
836ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
837
838ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
839ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
840ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
841ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
842ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
843ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
844ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
845ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
846
847#if ECB_GCC_VERSION(4,3)
848 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
849 #define ecb_bswap32(x) __builtin_bswap32 (x)
850 #define ecb_bswap64(x) __builtin_bswap64 (x)
851#else
852 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
853 ecb_function_ uint16_t
854 ecb_bswap16 (uint16_t x)
855 {
856 return ecb_rotl16 (x, 8);
857 }
858
859 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
860 ecb_function_ uint32_t
861 ecb_bswap32 (uint32_t x)
862 {
863 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
864 }
865
866 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
867 ecb_function_ uint64_t
868 ecb_bswap64 (uint64_t x)
869 {
870 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
871 }
872#endif
873
874#if ECB_GCC_VERSION(4,5)
875 #define ecb_unreachable() __builtin_unreachable ()
876#else
877 /* this seems to work fine, but gcc always emits a warning for it :/ */
878 ecb_inline void ecb_unreachable (void) ecb_noreturn;
879 ecb_inline void ecb_unreachable (void) { }
880#endif
881
882/* try to tell the compiler that some condition is definitely true */
883#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
884
885ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
886ecb_inline unsigned char
887ecb_byteorder_helper (void)
888{
889 const uint32_t u = 0x11223344;
890 return *(unsigned char *)&u;
891}
892
893ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
894ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
895ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
896ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
897
898#if ECB_GCC_VERSION(3,0) || ECB_C99
899 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
900#else
901 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
902#endif
903
904#if __cplusplus
905 template<typename T>
906 static inline T ecb_div_rd (T val, T div)
907 {
908 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
909 }
910 template<typename T>
911 static inline T ecb_div_ru (T val, T div)
912 {
913 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
914 }
915#else
916 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
917 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
918#endif
919
920#if ecb_cplusplus_does_not_suck
921 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
922 template<typename T, int N>
923 static inline int ecb_array_length (const T (&arr)[N])
924 {
925 return N;
926 }
927#else
928 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
929#endif
930
931#endif
932
933/* ECB.H END */
934
935#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
936/* if your architecture doesn't need memory fences, e.g. because it is
937 * single-cpu/core, or if you use libev in a project that doesn't use libev
938 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
939 * libev, in which cases the memory fences become nops.
940 * alternatively, you can remove this #error and link against libpthread,
941 * which will then provide the memory fences.
942 */
943# error "memory fences not defined for your architecture, please report"
944#endif
945
946#ifndef ECB_MEMORY_FENCE
947# define ECB_MEMORY_FENCE do { } while (0)
948# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
949# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
950#endif
951
952#define expect_false(cond) ecb_expect_false (cond)
953#define expect_true(cond) ecb_expect_true (cond)
954#define noinline ecb_noinline
955
381#define inline_size static inline 956#define inline_size ecb_inline
382 957
383#if EV_MINIMAL 958#if EV_FEATURE_CODE
959# define inline_speed ecb_inline
960#else
384# define inline_speed static noinline 961# define inline_speed static noinline
962#endif
963
964#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
965
966#if EV_MINPRI == EV_MAXPRI
967# define ABSPRI(w) (((W)w), 0)
385#else 968#else
386# define inline_speed static inline
387#endif
388
389#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
390#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 969# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
970#endif
391 971
392#define EMPTY /* required for microsofts broken pseudo-c compiler */ 972#define EMPTY /* required for microsofts broken pseudo-c compiler */
393#define EMPTY2(a,b) /* used to suppress some warnings */ 973#define EMPTY2(a,b) /* used to suppress some warnings */
394 974
395typedef ev_watcher *W; 975typedef ev_watcher *W;
… …
399#define ev_active(w) ((W)(w))->active 979#define ev_active(w) ((W)(w))->active
400#define ev_at(w) ((WT)(w))->at 980#define ev_at(w) ((WT)(w))->at
401 981
402#if EV_USE_REALTIME 982#if EV_USE_REALTIME
403/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 983/* sig_atomic_t is used to avoid per-thread variables or locking but still */
404/* giving it a reasonably high chance of working on typical architetcures */ 984/* giving it a reasonably high chance of working on typical architectures */
405static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 985static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
406#endif 986#endif
407 987
408#if EV_USE_MONOTONIC 988#if EV_USE_MONOTONIC
409static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 989static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
410#endif 990#endif
411 991
992#ifndef EV_FD_TO_WIN32_HANDLE
993# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
994#endif
995#ifndef EV_WIN32_HANDLE_TO_FD
996# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
997#endif
998#ifndef EV_WIN32_CLOSE_FD
999# define EV_WIN32_CLOSE_FD(fd) close (fd)
1000#endif
1001
412#ifdef _WIN32 1002#ifdef _WIN32
413# include "ev_win32.c" 1003# include "ev_win32.c"
414#endif 1004#endif
415 1005
416/*****************************************************************************/ 1006/*****************************************************************************/
417 1007
1008/* define a suitable floor function (only used by periodics atm) */
1009
1010#if EV_USE_FLOOR
1011# include <math.h>
1012# define ev_floor(v) floor (v)
1013#else
1014
1015#include <float.h>
1016
1017/* a floor() replacement function, should be independent of ev_tstamp type */
1018static ev_tstamp noinline
1019ev_floor (ev_tstamp v)
1020{
1021 /* the choice of shift factor is not terribly important */
1022#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1023 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1024#else
1025 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1026#endif
1027
1028 /* argument too large for an unsigned long? */
1029 if (expect_false (v >= shift))
1030 {
1031 ev_tstamp f;
1032
1033 if (v == v - 1.)
1034 return v; /* very large number */
1035
1036 f = shift * ev_floor (v * (1. / shift));
1037 return f + ev_floor (v - f);
1038 }
1039
1040 /* special treatment for negative args? */
1041 if (expect_false (v < 0.))
1042 {
1043 ev_tstamp f = -ev_floor (-v);
1044
1045 return f - (f == v ? 0 : 1);
1046 }
1047
1048 /* fits into an unsigned long */
1049 return (unsigned long)v;
1050}
1051
1052#endif
1053
1054/*****************************************************************************/
1055
1056#ifdef __linux
1057# include <sys/utsname.h>
1058#endif
1059
1060static unsigned int noinline ecb_cold
1061ev_linux_version (void)
1062{
1063#ifdef __linux
1064 unsigned int v = 0;
1065 struct utsname buf;
1066 int i;
1067 char *p = buf.release;
1068
1069 if (uname (&buf))
1070 return 0;
1071
1072 for (i = 3+1; --i; )
1073 {
1074 unsigned int c = 0;
1075
1076 for (;;)
1077 {
1078 if (*p >= '0' && *p <= '9')
1079 c = c * 10 + *p++ - '0';
1080 else
1081 {
1082 p += *p == '.';
1083 break;
1084 }
1085 }
1086
1087 v = (v << 8) | c;
1088 }
1089
1090 return v;
1091#else
1092 return 0;
1093#endif
1094}
1095
1096/*****************************************************************************/
1097
1098#if EV_AVOID_STDIO
1099static void noinline ecb_cold
1100ev_printerr (const char *msg)
1101{
1102 write (STDERR_FILENO, msg, strlen (msg));
1103}
1104#endif
1105
418static void (*syserr_cb)(const char *msg); 1106static void (*syserr_cb)(const char *msg);
419 1107
420void 1108void ecb_cold
421ev_set_syserr_cb (void (*cb)(const char *msg)) 1109ev_set_syserr_cb (void (*cb)(const char *msg))
422{ 1110{
423 syserr_cb = cb; 1111 syserr_cb = cb;
424} 1112}
425 1113
426static void noinline 1114static void noinline ecb_cold
427ev_syserr (const char *msg) 1115ev_syserr (const char *msg)
428{ 1116{
429 if (!msg) 1117 if (!msg)
430 msg = "(libev) system error"; 1118 msg = "(libev) system error";
431 1119
432 if (syserr_cb) 1120 if (syserr_cb)
433 syserr_cb (msg); 1121 syserr_cb (msg);
434 else 1122 else
435 { 1123 {
1124#if EV_AVOID_STDIO
1125 ev_printerr (msg);
1126 ev_printerr (": ");
1127 ev_printerr (strerror (errno));
1128 ev_printerr ("\n");
1129#else
436 perror (msg); 1130 perror (msg);
1131#endif
437 abort (); 1132 abort ();
438 } 1133 }
439} 1134}
440 1135
441static void * 1136static void *
442ev_realloc_emul (void *ptr, long size) 1137ev_realloc_emul (void *ptr, long size)
443{ 1138{
1139#if __GLIBC__
1140 return realloc (ptr, size);
1141#else
444 /* some systems, notably openbsd and darwin, fail to properly 1142 /* some systems, notably openbsd and darwin, fail to properly
445 * implement realloc (x, 0) (as required by both ansi c-98 and 1143 * implement realloc (x, 0) (as required by both ansi c-89 and
446 * the single unix specification, so work around them here. 1144 * the single unix specification, so work around them here.
447 */ 1145 */
448 1146
449 if (size) 1147 if (size)
450 return realloc (ptr, size); 1148 return realloc (ptr, size);
451 1149
452 free (ptr); 1150 free (ptr);
453 return 0; 1151 return 0;
1152#endif
454} 1153}
455 1154
456static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1155static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
457 1156
458void 1157void ecb_cold
459ev_set_allocator (void *(*cb)(void *ptr, long size)) 1158ev_set_allocator (void *(*cb)(void *ptr, long size))
460{ 1159{
461 alloc = cb; 1160 alloc = cb;
462} 1161}
463 1162
… …
466{ 1165{
467 ptr = alloc (ptr, size); 1166 ptr = alloc (ptr, size);
468 1167
469 if (!ptr && size) 1168 if (!ptr && size)
470 { 1169 {
1170#if EV_AVOID_STDIO
1171 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1172#else
471 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1173 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1174#endif
472 abort (); 1175 abort ();
473 } 1176 }
474 1177
475 return ptr; 1178 return ptr;
476} 1179}
… …
478#define ev_malloc(size) ev_realloc (0, (size)) 1181#define ev_malloc(size) ev_realloc (0, (size))
479#define ev_free(ptr) ev_realloc ((ptr), 0) 1182#define ev_free(ptr) ev_realloc ((ptr), 0)
480 1183
481/*****************************************************************************/ 1184/*****************************************************************************/
482 1185
1186/* set in reify when reification needed */
1187#define EV_ANFD_REIFY 1
1188
483/* file descriptor info structure */ 1189/* file descriptor info structure */
484typedef struct 1190typedef struct
485{ 1191{
486 WL head; 1192 WL head;
487 unsigned char events; /* the events watched for */ 1193 unsigned char events; /* the events watched for */
488 unsigned char reify; /* flag set when this ANFD needs reification */ 1194 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
489 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1195 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
490 unsigned char unused; 1196 unsigned char unused;
491#if EV_USE_EPOLL 1197#if EV_USE_EPOLL
492 unsigned int egen; /* generation counter to counter epoll bugs */ 1198 unsigned int egen; /* generation counter to counter epoll bugs */
493#endif 1199#endif
494#if EV_SELECT_IS_WINSOCKET 1200#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
495 SOCKET handle; 1201 SOCKET handle;
1202#endif
1203#if EV_USE_IOCP
1204 OVERLAPPED or, ow;
496#endif 1205#endif
497} ANFD; 1206} ANFD;
498 1207
499/* stores the pending event set for a given watcher */ 1208/* stores the pending event set for a given watcher */
500typedef struct 1209typedef struct
… …
542 #undef VAR 1251 #undef VAR
543 }; 1252 };
544 #include "ev_wrap.h" 1253 #include "ev_wrap.h"
545 1254
546 static struct ev_loop default_loop_struct; 1255 static struct ev_loop default_loop_struct;
547 struct ev_loop *ev_default_loop_ptr; 1256 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
548 1257
549#else 1258#else
550 1259
551 ev_tstamp ev_rt_now; 1260 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
552 #define VAR(name,decl) static decl; 1261 #define VAR(name,decl) static decl;
553 #include "ev_vars.h" 1262 #include "ev_vars.h"
554 #undef VAR 1263 #undef VAR
555 1264
556 static int ev_default_loop_ptr; 1265 static int ev_default_loop_ptr;
557 1266
558#endif 1267#endif
559 1268
1269#if EV_FEATURE_API
1270# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
1271# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
1272# define EV_INVOKE_PENDING invoke_cb (EV_A)
1273#else
1274# define EV_RELEASE_CB (void)0
1275# define EV_ACQUIRE_CB (void)0
1276# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
1277#endif
1278
1279#define EVBREAK_RECURSE 0x80
1280
560/*****************************************************************************/ 1281/*****************************************************************************/
561 1282
1283#ifndef EV_HAVE_EV_TIME
562ev_tstamp 1284ev_tstamp
563ev_time (void) 1285ev_time (void)
564{ 1286{
565#if EV_USE_REALTIME 1287#if EV_USE_REALTIME
566 if (expect_true (have_realtime)) 1288 if (expect_true (have_realtime))
… …
573 1295
574 struct timeval tv; 1296 struct timeval tv;
575 gettimeofday (&tv, 0); 1297 gettimeofday (&tv, 0);
576 return tv.tv_sec + tv.tv_usec * 1e-6; 1298 return tv.tv_sec + tv.tv_usec * 1e-6;
577} 1299}
1300#endif
578 1301
579inline_size ev_tstamp 1302inline_size ev_tstamp
580get_clock (void) 1303get_clock (void)
581{ 1304{
582#if EV_USE_MONOTONIC 1305#if EV_USE_MONOTONIC
… …
605 if (delay > 0.) 1328 if (delay > 0.)
606 { 1329 {
607#if EV_USE_NANOSLEEP 1330#if EV_USE_NANOSLEEP
608 struct timespec ts; 1331 struct timespec ts;
609 1332
610 ts.tv_sec = (time_t)delay; 1333 EV_TS_SET (ts, delay);
611 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
612
613 nanosleep (&ts, 0); 1334 nanosleep (&ts, 0);
614#elif defined(_WIN32) 1335#elif defined(_WIN32)
615 Sleep ((unsigned long)(delay * 1e3)); 1336 Sleep ((unsigned long)(delay * 1e3));
616#else 1337#else
617 struct timeval tv; 1338 struct timeval tv;
618 1339
619 tv.tv_sec = (time_t)delay;
620 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
621
622 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1340 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
623 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 1341 /* something not guaranteed by newer posix versions, but guaranteed */
624 /* by older ones */ 1342 /* by older ones */
1343 EV_TV_SET (tv, delay);
625 select (0, 0, 0, 0, &tv); 1344 select (0, 0, 0, 0, &tv);
626#endif 1345#endif
627 } 1346 }
628} 1347}
629 1348
630/*****************************************************************************/ 1349/*****************************************************************************/
631 1350
632#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1351#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
633 1352
634/* find a suitable new size for the given array, */ 1353/* find a suitable new size for the given array, */
635/* hopefully by rounding to a ncie-to-malloc size */ 1354/* hopefully by rounding to a nice-to-malloc size */
636inline_size int 1355inline_size int
637array_nextsize (int elem, int cur, int cnt) 1356array_nextsize (int elem, int cur, int cnt)
638{ 1357{
639 int ncur = cur + 1; 1358 int ncur = cur + 1;
640 1359
641 do 1360 do
642 ncur <<= 1; 1361 ncur <<= 1;
643 while (cnt > ncur); 1362 while (cnt > ncur);
644 1363
645 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1364 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
646 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1365 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
647 { 1366 {
648 ncur *= elem; 1367 ncur *= elem;
649 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1368 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
650 ncur = ncur - sizeof (void *) * 4; 1369 ncur = ncur - sizeof (void *) * 4;
… …
652 } 1371 }
653 1372
654 return ncur; 1373 return ncur;
655} 1374}
656 1375
657static noinline void * 1376static void * noinline ecb_cold
658array_realloc (int elem, void *base, int *cur, int cnt) 1377array_realloc (int elem, void *base, int *cur, int cnt)
659{ 1378{
660 *cur = array_nextsize (elem, *cur, cnt); 1379 *cur = array_nextsize (elem, *cur, cnt);
661 return ev_realloc (base, elem * *cur); 1380 return ev_realloc (base, elem * *cur);
662} 1381}
… …
665 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1384 memset ((void *)(base), 0, sizeof (*(base)) * (count))
666 1385
667#define array_needsize(type,base,cur,cnt,init) \ 1386#define array_needsize(type,base,cur,cnt,init) \
668 if (expect_false ((cnt) > (cur))) \ 1387 if (expect_false ((cnt) > (cur))) \
669 { \ 1388 { \
670 int ocur_ = (cur); \ 1389 int ecb_unused ocur_ = (cur); \
671 (base) = (type *)array_realloc \ 1390 (base) = (type *)array_realloc \
672 (sizeof (type), (base), &(cur), (cnt)); \ 1391 (sizeof (type), (base), &(cur), (cnt)); \
673 init ((base) + (ocur_), (cur) - ocur_); \ 1392 init ((base) + (ocur_), (cur) - ocur_); \
674 } 1393 }
675 1394
… …
736} 1455}
737 1456
738/*****************************************************************************/ 1457/*****************************************************************************/
739 1458
740inline_speed void 1459inline_speed void
741fd_event (EV_P_ int fd, int revents) 1460fd_event_nocheck (EV_P_ int fd, int revents)
742{ 1461{
743 ANFD *anfd = anfds + fd; 1462 ANFD *anfd = anfds + fd;
744 ev_io *w; 1463 ev_io *w;
745 1464
746 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1465 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
750 if (ev) 1469 if (ev)
751 ev_feed_event (EV_A_ (W)w, ev); 1470 ev_feed_event (EV_A_ (W)w, ev);
752 } 1471 }
753} 1472}
754 1473
1474/* do not submit kernel events for fds that have reify set */
1475/* because that means they changed while we were polling for new events */
1476inline_speed void
1477fd_event (EV_P_ int fd, int revents)
1478{
1479 ANFD *anfd = anfds + fd;
1480
1481 if (expect_true (!anfd->reify))
1482 fd_event_nocheck (EV_A_ fd, revents);
1483}
1484
755void 1485void
756ev_feed_fd_event (EV_P_ int fd, int revents) 1486ev_feed_fd_event (EV_P_ int fd, int revents)
757{ 1487{
758 if (fd >= 0 && fd < anfdmax) 1488 if (fd >= 0 && fd < anfdmax)
759 fd_event (EV_A_ fd, revents); 1489 fd_event_nocheck (EV_A_ fd, revents);
760} 1490}
761 1491
762/* make sure the external fd watch events are in-sync */ 1492/* make sure the external fd watch events are in-sync */
763/* with the kernel/libev internal state */ 1493/* with the kernel/libev internal state */
764inline_size void 1494inline_size void
765fd_reify (EV_P) 1495fd_reify (EV_P)
766{ 1496{
767 int i; 1497 int i;
768 1498
1499#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1500 for (i = 0; i < fdchangecnt; ++i)
1501 {
1502 int fd = fdchanges [i];
1503 ANFD *anfd = anfds + fd;
1504
1505 if (anfd->reify & EV__IOFDSET && anfd->head)
1506 {
1507 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1508
1509 if (handle != anfd->handle)
1510 {
1511 unsigned long arg;
1512
1513 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1514
1515 /* handle changed, but fd didn't - we need to do it in two steps */
1516 backend_modify (EV_A_ fd, anfd->events, 0);
1517 anfd->events = 0;
1518 anfd->handle = handle;
1519 }
1520 }
1521 }
1522#endif
1523
769 for (i = 0; i < fdchangecnt; ++i) 1524 for (i = 0; i < fdchangecnt; ++i)
770 { 1525 {
771 int fd = fdchanges [i]; 1526 int fd = fdchanges [i];
772 ANFD *anfd = anfds + fd; 1527 ANFD *anfd = anfds + fd;
773 ev_io *w; 1528 ev_io *w;
774 1529
775 unsigned char events = 0; 1530 unsigned char o_events = anfd->events;
1531 unsigned char o_reify = anfd->reify;
776 1532
777 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1533 anfd->reify = 0;
778 events |= (unsigned char)w->events;
779 1534
780#if EV_SELECT_IS_WINSOCKET 1535 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
781 if (events)
782 { 1536 {
783 unsigned long arg; 1537 anfd->events = 0;
784 #ifdef EV_FD_TO_WIN32_HANDLE 1538
785 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1539 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
786 #else 1540 anfd->events |= (unsigned char)w->events;
787 anfd->handle = _get_osfhandle (fd); 1541
788 #endif 1542 if (o_events != anfd->events)
789 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1543 o_reify = EV__IOFDSET; /* actually |= */
790 } 1544 }
791#endif
792 1545
793 { 1546 if (o_reify & EV__IOFDSET)
794 unsigned char o_events = anfd->events;
795 unsigned char o_reify = anfd->reify;
796
797 anfd->reify = 0;
798 anfd->events = events;
799
800 if (o_events != events || o_reify & EV__IOFDSET)
801 backend_modify (EV_A_ fd, o_events, events); 1547 backend_modify (EV_A_ fd, o_events, anfd->events);
802 }
803 } 1548 }
804 1549
805 fdchangecnt = 0; 1550 fdchangecnt = 0;
806} 1551}
807 1552
… …
819 fdchanges [fdchangecnt - 1] = fd; 1564 fdchanges [fdchangecnt - 1] = fd;
820 } 1565 }
821} 1566}
822 1567
823/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1568/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
824inline_speed void 1569inline_speed void ecb_cold
825fd_kill (EV_P_ int fd) 1570fd_kill (EV_P_ int fd)
826{ 1571{
827 ev_io *w; 1572 ev_io *w;
828 1573
829 while ((w = (ev_io *)anfds [fd].head)) 1574 while ((w = (ev_io *)anfds [fd].head))
… …
831 ev_io_stop (EV_A_ w); 1576 ev_io_stop (EV_A_ w);
832 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1577 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
833 } 1578 }
834} 1579}
835 1580
836/* check whether the given fd is atcually valid, for error recovery */ 1581/* check whether the given fd is actually valid, for error recovery */
837inline_size int 1582inline_size int ecb_cold
838fd_valid (int fd) 1583fd_valid (int fd)
839{ 1584{
840#ifdef _WIN32 1585#ifdef _WIN32
841 return _get_osfhandle (fd) != -1; 1586 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
842#else 1587#else
843 return fcntl (fd, F_GETFD) != -1; 1588 return fcntl (fd, F_GETFD) != -1;
844#endif 1589#endif
845} 1590}
846 1591
847/* called on EBADF to verify fds */ 1592/* called on EBADF to verify fds */
848static void noinline 1593static void noinline ecb_cold
849fd_ebadf (EV_P) 1594fd_ebadf (EV_P)
850{ 1595{
851 int fd; 1596 int fd;
852 1597
853 for (fd = 0; fd < anfdmax; ++fd) 1598 for (fd = 0; fd < anfdmax; ++fd)
… …
855 if (!fd_valid (fd) && errno == EBADF) 1600 if (!fd_valid (fd) && errno == EBADF)
856 fd_kill (EV_A_ fd); 1601 fd_kill (EV_A_ fd);
857} 1602}
858 1603
859/* called on ENOMEM in select/poll to kill some fds and retry */ 1604/* called on ENOMEM in select/poll to kill some fds and retry */
860static void noinline 1605static void noinline ecb_cold
861fd_enomem (EV_P) 1606fd_enomem (EV_P)
862{ 1607{
863 int fd; 1608 int fd;
864 1609
865 for (fd = anfdmax; fd--; ) 1610 for (fd = anfdmax; fd--; )
866 if (anfds [fd].events) 1611 if (anfds [fd].events)
867 { 1612 {
868 fd_kill (EV_A_ fd); 1613 fd_kill (EV_A_ fd);
869 return; 1614 break;
870 } 1615 }
871} 1616}
872 1617
873/* usually called after fork if backend needs to re-arm all fds from scratch */ 1618/* usually called after fork if backend needs to re-arm all fds from scratch */
874static void noinline 1619static void noinline
… …
879 for (fd = 0; fd < anfdmax; ++fd) 1624 for (fd = 0; fd < anfdmax; ++fd)
880 if (anfds [fd].events) 1625 if (anfds [fd].events)
881 { 1626 {
882 anfds [fd].events = 0; 1627 anfds [fd].events = 0;
883 anfds [fd].emask = 0; 1628 anfds [fd].emask = 0;
884 fd_change (EV_A_ fd, EV__IOFDSET | 1); 1629 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
885 } 1630 }
886} 1631}
887 1632
1633/* used to prepare libev internal fd's */
1634/* this is not fork-safe */
1635inline_speed void
1636fd_intern (int fd)
1637{
1638#ifdef _WIN32
1639 unsigned long arg = 1;
1640 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1641#else
1642 fcntl (fd, F_SETFD, FD_CLOEXEC);
1643 fcntl (fd, F_SETFL, O_NONBLOCK);
1644#endif
1645}
1646
888/*****************************************************************************/ 1647/*****************************************************************************/
889 1648
890/* 1649/*
891 * the heap functions want a real array index. array index 0 uis guaranteed to not 1650 * the heap functions want a real array index. array index 0 is guaranteed to not
892 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1651 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
893 * the branching factor of the d-tree. 1652 * the branching factor of the d-tree.
894 */ 1653 */
895 1654
896/* 1655/*
… …
964 1723
965 for (;;) 1724 for (;;)
966 { 1725 {
967 int c = k << 1; 1726 int c = k << 1;
968 1727
969 if (c > N + HEAP0 - 1) 1728 if (c >= N + HEAP0)
970 break; 1729 break;
971 1730
972 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1731 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
973 ? 1 : 0; 1732 ? 1 : 0;
974 1733
… …
1010 1769
1011/* move an element suitably so it is in a correct place */ 1770/* move an element suitably so it is in a correct place */
1012inline_size void 1771inline_size void
1013adjustheap (ANHE *heap, int N, int k) 1772adjustheap (ANHE *heap, int N, int k)
1014{ 1773{
1015 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1774 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1016 upheap (heap, k); 1775 upheap (heap, k);
1017 else 1776 else
1018 downheap (heap, N, k); 1777 downheap (heap, N, k);
1019} 1778}
1020 1779
… …
1033/*****************************************************************************/ 1792/*****************************************************************************/
1034 1793
1035/* associate signal watchers to a signal signal */ 1794/* associate signal watchers to a signal signal */
1036typedef struct 1795typedef struct
1037{ 1796{
1797 EV_ATOMIC_T pending;
1798#if EV_MULTIPLICITY
1799 EV_P;
1800#endif
1038 WL head; 1801 WL head;
1039 EV_ATOMIC_T gotsig;
1040} ANSIG; 1802} ANSIG;
1041 1803
1042static ANSIG *signals; 1804static ANSIG signals [EV_NSIG - 1];
1043static int signalmax;
1044
1045static EV_ATOMIC_T gotsig;
1046 1805
1047/*****************************************************************************/ 1806/*****************************************************************************/
1048 1807
1049/* used to prepare libev internal fd's */ 1808#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1050/* this is not fork-safe */
1051inline_speed void
1052fd_intern (int fd)
1053{
1054#ifdef _WIN32
1055 unsigned long arg = 1;
1056 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1057#else
1058 fcntl (fd, F_SETFD, FD_CLOEXEC);
1059 fcntl (fd, F_SETFL, O_NONBLOCK);
1060#endif
1061}
1062 1809
1063static void noinline 1810static void noinline ecb_cold
1064evpipe_init (EV_P) 1811evpipe_init (EV_P)
1065{ 1812{
1066 if (!ev_is_active (&pipe_w)) 1813 if (!ev_is_active (&pipe_w))
1067 { 1814 {
1068#if EV_USE_EVENTFD 1815# if EV_USE_EVENTFD
1816 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1817 if (evfd < 0 && errno == EINVAL)
1069 if ((evfd = eventfd (0, 0)) >= 0) 1818 evfd = eventfd (0, 0);
1819
1820 if (evfd >= 0)
1070 { 1821 {
1071 evpipe [0] = -1; 1822 evpipe [0] = -1;
1072 fd_intern (evfd); 1823 fd_intern (evfd); /* doing it twice doesn't hurt */
1073 ev_io_set (&pipe_w, evfd, EV_READ); 1824 ev_io_set (&pipe_w, evfd, EV_READ);
1074 } 1825 }
1075 else 1826 else
1076#endif 1827# endif
1077 { 1828 {
1078 while (pipe (evpipe)) 1829 while (pipe (evpipe))
1079 ev_syserr ("(libev) error creating signal/async pipe"); 1830 ev_syserr ("(libev) error creating signal/async pipe");
1080 1831
1081 fd_intern (evpipe [0]); 1832 fd_intern (evpipe [0]);
… …
1086 ev_io_start (EV_A_ &pipe_w); 1837 ev_io_start (EV_A_ &pipe_w);
1087 ev_unref (EV_A); /* watcher should not keep loop alive */ 1838 ev_unref (EV_A); /* watcher should not keep loop alive */
1088 } 1839 }
1089} 1840}
1090 1841
1091inline_size void 1842inline_speed void
1092evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1843evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1093{ 1844{
1094 if (!*flag) 1845 if (expect_true (*flag))
1846 return;
1847
1848 *flag = 1;
1849
1850 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1851
1852 pipe_write_skipped = 1;
1853
1854 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1855
1856 if (pipe_write_wanted)
1095 { 1857 {
1858 int old_errno;
1859
1860 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1861
1096 int old_errno = errno; /* save errno because write might clobber it */ 1862 old_errno = errno; /* save errno because write will clobber it */
1097
1098 *flag = 1;
1099 1863
1100#if EV_USE_EVENTFD 1864#if EV_USE_EVENTFD
1101 if (evfd >= 0) 1865 if (evfd >= 0)
1102 { 1866 {
1103 uint64_t counter = 1; 1867 uint64_t counter = 1;
1104 write (evfd, &counter, sizeof (uint64_t)); 1868 write (evfd, &counter, sizeof (uint64_t));
1105 } 1869 }
1106 else 1870 else
1107#endif 1871#endif
1872 {
1873 /* win32 people keep sending patches that change this write() to send() */
1874 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1875 /* so when you think this write should be a send instead, please find out */
1876 /* where your send() is from - it's definitely not the microsoft send, and */
1877 /* tell me. thank you. */
1878 /* it might be that your problem is that your environment needs EV_USE_WSASOCKET */
1879 /* check the ev documentation on how to use this flag */
1108 write (evpipe [1], &old_errno, 1); 1880 write (evpipe [1], &(evpipe [1]), 1);
1881 }
1109 1882
1110 errno = old_errno; 1883 errno = old_errno;
1111 } 1884 }
1112} 1885}
1113 1886
1114/* called whenever the libev signal pipe */ 1887/* called whenever the libev signal pipe */
1115/* got some events (signal, async) */ 1888/* got some events (signal, async) */
1116static void 1889static void
1117pipecb (EV_P_ ev_io *iow, int revents) 1890pipecb (EV_P_ ev_io *iow, int revents)
1118{ 1891{
1892 int i;
1893
1894 if (revents & EV_READ)
1895 {
1119#if EV_USE_EVENTFD 1896#if EV_USE_EVENTFD
1120 if (evfd >= 0) 1897 if (evfd >= 0)
1121 { 1898 {
1122 uint64_t counter; 1899 uint64_t counter;
1123 read (evfd, &counter, sizeof (uint64_t)); 1900 read (evfd, &counter, sizeof (uint64_t));
1124 } 1901 }
1125 else 1902 else
1126#endif 1903#endif
1127 { 1904 {
1128 char dummy; 1905 char dummy;
1906 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1129 read (evpipe [0], &dummy, 1); 1907 read (evpipe [0], &dummy, 1);
1908 }
1909 }
1910
1911 pipe_write_skipped = 0;
1912
1913#if EV_SIGNAL_ENABLE
1914 if (sig_pending)
1130 } 1915 {
1916 sig_pending = 0;
1131 1917
1132 if (gotsig && ev_is_default_loop (EV_A)) 1918 for (i = EV_NSIG - 1; i--; )
1133 { 1919 if (expect_false (signals [i].pending))
1134 int signum;
1135 gotsig = 0;
1136
1137 for (signum = signalmax; signum--; )
1138 if (signals [signum].gotsig)
1139 ev_feed_signal_event (EV_A_ signum + 1); 1920 ev_feed_signal_event (EV_A_ i + 1);
1140 } 1921 }
1922#endif
1141 1923
1142#if EV_ASYNC_ENABLE 1924#if EV_ASYNC_ENABLE
1143 if (gotasync) 1925 if (async_pending)
1144 { 1926 {
1145 int i; 1927 async_pending = 0;
1146 gotasync = 0;
1147 1928
1148 for (i = asynccnt; i--; ) 1929 for (i = asynccnt; i--; )
1149 if (asyncs [i]->sent) 1930 if (asyncs [i]->sent)
1150 { 1931 {
1151 asyncs [i]->sent = 0; 1932 asyncs [i]->sent = 0;
… …
1155#endif 1936#endif
1156} 1937}
1157 1938
1158/*****************************************************************************/ 1939/*****************************************************************************/
1159 1940
1941void
1942ev_feed_signal (int signum)
1943{
1944#if EV_MULTIPLICITY
1945 EV_P = signals [signum - 1].loop;
1946
1947 if (!EV_A)
1948 return;
1949#endif
1950
1951 if (!ev_active (&pipe_w))
1952 return;
1953
1954 signals [signum - 1].pending = 1;
1955 evpipe_write (EV_A_ &sig_pending);
1956}
1957
1160static void 1958static void
1161ev_sighandler (int signum) 1959ev_sighandler (int signum)
1162{ 1960{
1163#if EV_MULTIPLICITY
1164 struct ev_loop *loop = &default_loop_struct;
1165#endif
1166
1167#if _WIN32 1961#ifdef _WIN32
1168 signal (signum, ev_sighandler); 1962 signal (signum, ev_sighandler);
1169#endif 1963#endif
1170 1964
1171 signals [signum - 1].gotsig = 1; 1965 ev_feed_signal (signum);
1172 evpipe_write (EV_A_ &gotsig);
1173} 1966}
1174 1967
1175void noinline 1968void noinline
1176ev_feed_signal_event (EV_P_ int signum) 1969ev_feed_signal_event (EV_P_ int signum)
1177{ 1970{
1178 WL w; 1971 WL w;
1179 1972
1973 if (expect_false (signum <= 0 || signum > EV_NSIG))
1974 return;
1975
1976 --signum;
1977
1180#if EV_MULTIPLICITY 1978#if EV_MULTIPLICITY
1181 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1979 /* it is permissible to try to feed a signal to the wrong loop */
1182#endif 1980 /* or, likely more useful, feeding a signal nobody is waiting for */
1183 1981
1184 --signum; 1982 if (expect_false (signals [signum].loop != EV_A))
1185
1186 if (signum < 0 || signum >= signalmax)
1187 return; 1983 return;
1984#endif
1188 1985
1189 signals [signum].gotsig = 0; 1986 signals [signum].pending = 0;
1190 1987
1191 for (w = signals [signum].head; w; w = w->next) 1988 for (w = signals [signum].head; w; w = w->next)
1192 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1989 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1193} 1990}
1194 1991
1992#if EV_USE_SIGNALFD
1993static void
1994sigfdcb (EV_P_ ev_io *iow, int revents)
1995{
1996 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1997
1998 for (;;)
1999 {
2000 ssize_t res = read (sigfd, si, sizeof (si));
2001
2002 /* not ISO-C, as res might be -1, but works with SuS */
2003 for (sip = si; (char *)sip < (char *)si + res; ++sip)
2004 ev_feed_signal_event (EV_A_ sip->ssi_signo);
2005
2006 if (res < (ssize_t)sizeof (si))
2007 break;
2008 }
2009}
2010#endif
2011
2012#endif
2013
1195/*****************************************************************************/ 2014/*****************************************************************************/
1196 2015
2016#if EV_CHILD_ENABLE
1197static WL childs [EV_PID_HASHSIZE]; 2017static WL childs [EV_PID_HASHSIZE];
1198
1199#ifndef _WIN32
1200 2018
1201static ev_signal childev; 2019static ev_signal childev;
1202 2020
1203#ifndef WIFCONTINUED 2021#ifndef WIFCONTINUED
1204# define WIFCONTINUED(status) 0 2022# define WIFCONTINUED(status) 0
… …
1209child_reap (EV_P_ int chain, int pid, int status) 2027child_reap (EV_P_ int chain, int pid, int status)
1210{ 2028{
1211 ev_child *w; 2029 ev_child *w;
1212 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2030 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1213 2031
1214 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2032 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1215 { 2033 {
1216 if ((w->pid == pid || !w->pid) 2034 if ((w->pid == pid || !w->pid)
1217 && (!traced || (w->flags & 1))) 2035 && (!traced || (w->flags & 1)))
1218 { 2036 {
1219 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2037 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1244 /* make sure we are called again until all children have been reaped */ 2062 /* make sure we are called again until all children have been reaped */
1245 /* we need to do it this way so that the callback gets called before we continue */ 2063 /* we need to do it this way so that the callback gets called before we continue */
1246 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2064 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1247 2065
1248 child_reap (EV_A_ pid, pid, status); 2066 child_reap (EV_A_ pid, pid, status);
1249 if (EV_PID_HASHSIZE > 1) 2067 if ((EV_PID_HASHSIZE) > 1)
1250 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2068 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1251} 2069}
1252 2070
1253#endif 2071#endif
1254 2072
1255/*****************************************************************************/ 2073/*****************************************************************************/
1256 2074
2075#if EV_USE_IOCP
2076# include "ev_iocp.c"
2077#endif
1257#if EV_USE_PORT 2078#if EV_USE_PORT
1258# include "ev_port.c" 2079# include "ev_port.c"
1259#endif 2080#endif
1260#if EV_USE_KQUEUE 2081#if EV_USE_KQUEUE
1261# include "ev_kqueue.c" 2082# include "ev_kqueue.c"
… …
1268#endif 2089#endif
1269#if EV_USE_SELECT 2090#if EV_USE_SELECT
1270# include "ev_select.c" 2091# include "ev_select.c"
1271#endif 2092#endif
1272 2093
1273int 2094int ecb_cold
1274ev_version_major (void) 2095ev_version_major (void)
1275{ 2096{
1276 return EV_VERSION_MAJOR; 2097 return EV_VERSION_MAJOR;
1277} 2098}
1278 2099
1279int 2100int ecb_cold
1280ev_version_minor (void) 2101ev_version_minor (void)
1281{ 2102{
1282 return EV_VERSION_MINOR; 2103 return EV_VERSION_MINOR;
1283} 2104}
1284 2105
1285/* return true if we are running with elevated privileges and should ignore env variables */ 2106/* return true if we are running with elevated privileges and should ignore env variables */
1286int inline_size 2107int inline_size ecb_cold
1287enable_secure (void) 2108enable_secure (void)
1288{ 2109{
1289#ifdef _WIN32 2110#ifdef _WIN32
1290 return 0; 2111 return 0;
1291#else 2112#else
1292 return getuid () != geteuid () 2113 return getuid () != geteuid ()
1293 || getgid () != getegid (); 2114 || getgid () != getegid ();
1294#endif 2115#endif
1295} 2116}
1296 2117
1297unsigned int 2118unsigned int ecb_cold
1298ev_supported_backends (void) 2119ev_supported_backends (void)
1299{ 2120{
1300 unsigned int flags = 0; 2121 unsigned int flags = 0;
1301 2122
1302 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2123 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1306 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2127 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1307 2128
1308 return flags; 2129 return flags;
1309} 2130}
1310 2131
1311unsigned int 2132unsigned int ecb_cold
1312ev_recommended_backends (void) 2133ev_recommended_backends (void)
1313{ 2134{
1314 unsigned int flags = ev_supported_backends (); 2135 unsigned int flags = ev_supported_backends ();
1315 2136
1316#ifndef __NetBSD__ 2137#ifndef __NetBSD__
… …
1321#ifdef __APPLE__ 2142#ifdef __APPLE__
1322 /* only select works correctly on that "unix-certified" platform */ 2143 /* only select works correctly on that "unix-certified" platform */
1323 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2144 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1324 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2145 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1325#endif 2146#endif
2147#ifdef __FreeBSD__
2148 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2149#endif
1326 2150
1327 return flags; 2151 return flags;
1328} 2152}
1329 2153
1330unsigned int 2154unsigned int ecb_cold
1331ev_embeddable_backends (void) 2155ev_embeddable_backends (void)
1332{ 2156{
1333 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2157 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1334 2158
1335 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2159 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1336 /* please fix it and tell me how to detect the fix */ 2160 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1337 flags &= ~EVBACKEND_EPOLL; 2161 flags &= ~EVBACKEND_EPOLL;
1338 2162
1339 return flags; 2163 return flags;
1340} 2164}
1341 2165
1342unsigned int 2166unsigned int
1343ev_backend (EV_P) 2167ev_backend (EV_P)
1344{ 2168{
1345 return backend; 2169 return backend;
1346} 2170}
1347 2171
2172#if EV_FEATURE_API
1348unsigned int 2173unsigned int
1349ev_loop_count (EV_P) 2174ev_iteration (EV_P)
1350{ 2175{
1351 return loop_count; 2176 return loop_count;
2177}
2178
2179unsigned int
2180ev_depth (EV_P)
2181{
2182 return loop_depth;
1352} 2183}
1353 2184
1354void 2185void
1355ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2186ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1356{ 2187{
… …
1361ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2192ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1362{ 2193{
1363 timeout_blocktime = interval; 2194 timeout_blocktime = interval;
1364} 2195}
1365 2196
2197void
2198ev_set_userdata (EV_P_ void *data)
2199{
2200 userdata = data;
2201}
2202
2203void *
2204ev_userdata (EV_P)
2205{
2206 return userdata;
2207}
2208
2209void
2210ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
2211{
2212 invoke_cb = invoke_pending_cb;
2213}
2214
2215void
2216ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
2217{
2218 release_cb = release;
2219 acquire_cb = acquire;
2220}
2221#endif
2222
1366/* initialise a loop structure, must be zero-initialised */ 2223/* initialise a loop structure, must be zero-initialised */
1367static void noinline 2224static void noinline ecb_cold
1368loop_init (EV_P_ unsigned int flags) 2225loop_init (EV_P_ unsigned int flags)
1369{ 2226{
1370 if (!backend) 2227 if (!backend)
1371 { 2228 {
2229 origflags = flags;
2230
1372#if EV_USE_REALTIME 2231#if EV_USE_REALTIME
1373 if (!have_realtime) 2232 if (!have_realtime)
1374 { 2233 {
1375 struct timespec ts; 2234 struct timespec ts;
1376 2235
… …
1387 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2246 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1388 have_monotonic = 1; 2247 have_monotonic = 1;
1389 } 2248 }
1390#endif 2249#endif
1391 2250
1392 ev_rt_now = ev_time ();
1393 mn_now = get_clock ();
1394 now_floor = mn_now;
1395 rtmn_diff = ev_rt_now - mn_now;
1396
1397 io_blocktime = 0.;
1398 timeout_blocktime = 0.;
1399 backend = 0;
1400 backend_fd = -1;
1401 gotasync = 0;
1402#if EV_USE_INOTIFY
1403 fs_fd = -2;
1404#endif
1405
1406 /* pid check not overridable via env */ 2251 /* pid check not overridable via env */
1407#ifndef _WIN32 2252#ifndef _WIN32
1408 if (flags & EVFLAG_FORKCHECK) 2253 if (flags & EVFLAG_FORKCHECK)
1409 curpid = getpid (); 2254 curpid = getpid ();
1410#endif 2255#endif
… …
1412 if (!(flags & EVFLAG_NOENV) 2257 if (!(flags & EVFLAG_NOENV)
1413 && !enable_secure () 2258 && !enable_secure ()
1414 && getenv ("LIBEV_FLAGS")) 2259 && getenv ("LIBEV_FLAGS"))
1415 flags = atoi (getenv ("LIBEV_FLAGS")); 2260 flags = atoi (getenv ("LIBEV_FLAGS"));
1416 2261
1417 if (!(flags & 0x0000ffffU)) 2262 ev_rt_now = ev_time ();
2263 mn_now = get_clock ();
2264 now_floor = mn_now;
2265 rtmn_diff = ev_rt_now - mn_now;
2266#if EV_FEATURE_API
2267 invoke_cb = ev_invoke_pending;
2268#endif
2269
2270 io_blocktime = 0.;
2271 timeout_blocktime = 0.;
2272 backend = 0;
2273 backend_fd = -1;
2274 sig_pending = 0;
2275#if EV_ASYNC_ENABLE
2276 async_pending = 0;
2277#endif
2278 pipe_write_skipped = 0;
2279 pipe_write_wanted = 0;
2280#if EV_USE_INOTIFY
2281 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2282#endif
2283#if EV_USE_SIGNALFD
2284 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2285#endif
2286
2287 if (!(flags & EVBACKEND_MASK))
1418 flags |= ev_recommended_backends (); 2288 flags |= ev_recommended_backends ();
1419 2289
2290#if EV_USE_IOCP
2291 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2292#endif
1420#if EV_USE_PORT 2293#if EV_USE_PORT
1421 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2294 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1422#endif 2295#endif
1423#if EV_USE_KQUEUE 2296#if EV_USE_KQUEUE
1424 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2297 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1433 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2306 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1434#endif 2307#endif
1435 2308
1436 ev_prepare_init (&pending_w, pendingcb); 2309 ev_prepare_init (&pending_w, pendingcb);
1437 2310
2311#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1438 ev_init (&pipe_w, pipecb); 2312 ev_init (&pipe_w, pipecb);
1439 ev_set_priority (&pipe_w, EV_MAXPRI); 2313 ev_set_priority (&pipe_w, EV_MAXPRI);
2314#endif
1440 } 2315 }
1441} 2316}
1442 2317
1443/* free up a loop structure */ 2318/* free up a loop structure */
1444static void noinline 2319void ecb_cold
1445loop_destroy (EV_P) 2320ev_loop_destroy (EV_P)
1446{ 2321{
1447 int i; 2322 int i;
1448 2323
2324#if EV_MULTIPLICITY
2325 /* mimic free (0) */
2326 if (!EV_A)
2327 return;
2328#endif
2329
2330#if EV_CLEANUP_ENABLE
2331 /* queue cleanup watchers (and execute them) */
2332 if (expect_false (cleanupcnt))
2333 {
2334 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2335 EV_INVOKE_PENDING;
2336 }
2337#endif
2338
2339#if EV_CHILD_ENABLE
2340 if (ev_is_active (&childev))
2341 {
2342 ev_ref (EV_A); /* child watcher */
2343 ev_signal_stop (EV_A_ &childev);
2344 }
2345#endif
2346
1449 if (ev_is_active (&pipe_w)) 2347 if (ev_is_active (&pipe_w))
1450 { 2348 {
1451 ev_ref (EV_A); /* signal watcher */ 2349 /*ev_ref (EV_A);*/
1452 ev_io_stop (EV_A_ &pipe_w); 2350 /*ev_io_stop (EV_A_ &pipe_w);*/
1453 2351
1454#if EV_USE_EVENTFD 2352#if EV_USE_EVENTFD
1455 if (evfd >= 0) 2353 if (evfd >= 0)
1456 close (evfd); 2354 close (evfd);
1457#endif 2355#endif
1458 2356
1459 if (evpipe [0] >= 0) 2357 if (evpipe [0] >= 0)
1460 { 2358 {
1461 close (evpipe [0]); 2359 EV_WIN32_CLOSE_FD (evpipe [0]);
1462 close (evpipe [1]); 2360 EV_WIN32_CLOSE_FD (evpipe [1]);
1463 } 2361 }
1464 } 2362 }
2363
2364#if EV_USE_SIGNALFD
2365 if (ev_is_active (&sigfd_w))
2366 close (sigfd);
2367#endif
1465 2368
1466#if EV_USE_INOTIFY 2369#if EV_USE_INOTIFY
1467 if (fs_fd >= 0) 2370 if (fs_fd >= 0)
1468 close (fs_fd); 2371 close (fs_fd);
1469#endif 2372#endif
1470 2373
1471 if (backend_fd >= 0) 2374 if (backend_fd >= 0)
1472 close (backend_fd); 2375 close (backend_fd);
1473 2376
2377#if EV_USE_IOCP
2378 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2379#endif
1474#if EV_USE_PORT 2380#if EV_USE_PORT
1475 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2381 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1476#endif 2382#endif
1477#if EV_USE_KQUEUE 2383#if EV_USE_KQUEUE
1478 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2384 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1493#if EV_IDLE_ENABLE 2399#if EV_IDLE_ENABLE
1494 array_free (idle, [i]); 2400 array_free (idle, [i]);
1495#endif 2401#endif
1496 } 2402 }
1497 2403
1498 ev_free (anfds); anfdmax = 0; 2404 ev_free (anfds); anfds = 0; anfdmax = 0;
1499 2405
1500 /* have to use the microsoft-never-gets-it-right macro */ 2406 /* have to use the microsoft-never-gets-it-right macro */
1501 array_free (rfeed, EMPTY); 2407 array_free (rfeed, EMPTY);
1502 array_free (fdchange, EMPTY); 2408 array_free (fdchange, EMPTY);
1503 array_free (timer, EMPTY); 2409 array_free (timer, EMPTY);
… …
1505 array_free (periodic, EMPTY); 2411 array_free (periodic, EMPTY);
1506#endif 2412#endif
1507#if EV_FORK_ENABLE 2413#if EV_FORK_ENABLE
1508 array_free (fork, EMPTY); 2414 array_free (fork, EMPTY);
1509#endif 2415#endif
2416#if EV_CLEANUP_ENABLE
2417 array_free (cleanup, EMPTY);
2418#endif
1510 array_free (prepare, EMPTY); 2419 array_free (prepare, EMPTY);
1511 array_free (check, EMPTY); 2420 array_free (check, EMPTY);
1512#if EV_ASYNC_ENABLE 2421#if EV_ASYNC_ENABLE
1513 array_free (async, EMPTY); 2422 array_free (async, EMPTY);
1514#endif 2423#endif
1515 2424
1516 backend = 0; 2425 backend = 0;
2426
2427#if EV_MULTIPLICITY
2428 if (ev_is_default_loop (EV_A))
2429#endif
2430 ev_default_loop_ptr = 0;
2431#if EV_MULTIPLICITY
2432 else
2433 ev_free (EV_A);
2434#endif
1517} 2435}
1518 2436
1519#if EV_USE_INOTIFY 2437#if EV_USE_INOTIFY
1520inline_size void infy_fork (EV_P); 2438inline_size void infy_fork (EV_P);
1521#endif 2439#endif
… …
1536 infy_fork (EV_A); 2454 infy_fork (EV_A);
1537#endif 2455#endif
1538 2456
1539 if (ev_is_active (&pipe_w)) 2457 if (ev_is_active (&pipe_w))
1540 { 2458 {
1541 /* this "locks" the handlers against writing to the pipe */ 2459 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1542 /* while we modify the fd vars */
1543 gotsig = 1;
1544#if EV_ASYNC_ENABLE
1545 gotasync = 1;
1546#endif
1547 2460
1548 ev_ref (EV_A); 2461 ev_ref (EV_A);
1549 ev_io_stop (EV_A_ &pipe_w); 2462 ev_io_stop (EV_A_ &pipe_w);
1550 2463
1551#if EV_USE_EVENTFD 2464#if EV_USE_EVENTFD
… …
1553 close (evfd); 2466 close (evfd);
1554#endif 2467#endif
1555 2468
1556 if (evpipe [0] >= 0) 2469 if (evpipe [0] >= 0)
1557 { 2470 {
1558 close (evpipe [0]); 2471 EV_WIN32_CLOSE_FD (evpipe [0]);
1559 close (evpipe [1]); 2472 EV_WIN32_CLOSE_FD (evpipe [1]);
1560 } 2473 }
1561 2474
2475#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1562 evpipe_init (EV_A); 2476 evpipe_init (EV_A);
1563 /* now iterate over everything, in case we missed something */ 2477 /* now iterate over everything, in case we missed something */
1564 pipecb (EV_A_ &pipe_w, EV_READ); 2478 pipecb (EV_A_ &pipe_w, EV_READ);
2479#endif
1565 } 2480 }
1566 2481
1567 postfork = 0; 2482 postfork = 0;
1568} 2483}
1569 2484
1570#if EV_MULTIPLICITY 2485#if EV_MULTIPLICITY
1571 2486
1572struct ev_loop * 2487struct ev_loop * ecb_cold
1573ev_loop_new (unsigned int flags) 2488ev_loop_new (unsigned int flags)
1574{ 2489{
1575 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2490 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1576 2491
1577 memset (loop, 0, sizeof (struct ev_loop)); 2492 memset (EV_A, 0, sizeof (struct ev_loop));
1578
1579 loop_init (EV_A_ flags); 2493 loop_init (EV_A_ flags);
1580 2494
1581 if (ev_backend (EV_A)) 2495 if (ev_backend (EV_A))
1582 return loop; 2496 return EV_A;
1583 2497
2498 ev_free (EV_A);
1584 return 0; 2499 return 0;
1585} 2500}
1586 2501
1587void 2502#endif /* multiplicity */
1588ev_loop_destroy (EV_P)
1589{
1590 loop_destroy (EV_A);
1591 ev_free (loop);
1592}
1593
1594void
1595ev_loop_fork (EV_P)
1596{
1597 postfork = 1; /* must be in line with ev_default_fork */
1598}
1599 2503
1600#if EV_VERIFY 2504#if EV_VERIFY
1601static void noinline 2505static void noinline ecb_cold
1602verify_watcher (EV_P_ W w) 2506verify_watcher (EV_P_ W w)
1603{ 2507{
1604 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2508 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1605 2509
1606 if (w->pending) 2510 if (w->pending)
1607 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2511 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1608} 2512}
1609 2513
1610static void noinline 2514static void noinline ecb_cold
1611verify_heap (EV_P_ ANHE *heap, int N) 2515verify_heap (EV_P_ ANHE *heap, int N)
1612{ 2516{
1613 int i; 2517 int i;
1614 2518
1615 for (i = HEAP0; i < N + HEAP0; ++i) 2519 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1620 2524
1621 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2525 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1622 } 2526 }
1623} 2527}
1624 2528
1625static void noinline 2529static void noinline ecb_cold
1626array_verify (EV_P_ W *ws, int cnt) 2530array_verify (EV_P_ W *ws, int cnt)
1627{ 2531{
1628 while (cnt--) 2532 while (cnt--)
1629 { 2533 {
1630 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2534 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1631 verify_watcher (EV_A_ ws [cnt]); 2535 verify_watcher (EV_A_ ws [cnt]);
1632 } 2536 }
1633} 2537}
1634#endif 2538#endif
1635 2539
1636void 2540#if EV_FEATURE_API
2541void ecb_cold
1637ev_loop_verify (EV_P) 2542ev_verify (EV_P)
1638{ 2543{
1639#if EV_VERIFY 2544#if EV_VERIFY
1640 int i; 2545 int i;
1641 WL w; 2546 WL w;
1642 2547
… …
1676#if EV_FORK_ENABLE 2581#if EV_FORK_ENABLE
1677 assert (forkmax >= forkcnt); 2582 assert (forkmax >= forkcnt);
1678 array_verify (EV_A_ (W *)forks, forkcnt); 2583 array_verify (EV_A_ (W *)forks, forkcnt);
1679#endif 2584#endif
1680 2585
2586#if EV_CLEANUP_ENABLE
2587 assert (cleanupmax >= cleanupcnt);
2588 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2589#endif
2590
1681#if EV_ASYNC_ENABLE 2591#if EV_ASYNC_ENABLE
1682 assert (asyncmax >= asynccnt); 2592 assert (asyncmax >= asynccnt);
1683 array_verify (EV_A_ (W *)asyncs, asynccnt); 2593 array_verify (EV_A_ (W *)asyncs, asynccnt);
1684#endif 2594#endif
1685 2595
2596#if EV_PREPARE_ENABLE
1686 assert (preparemax >= preparecnt); 2597 assert (preparemax >= preparecnt);
1687 array_verify (EV_A_ (W *)prepares, preparecnt); 2598 array_verify (EV_A_ (W *)prepares, preparecnt);
2599#endif
1688 2600
2601#if EV_CHECK_ENABLE
1689 assert (checkmax >= checkcnt); 2602 assert (checkmax >= checkcnt);
1690 array_verify (EV_A_ (W *)checks, checkcnt); 2603 array_verify (EV_A_ (W *)checks, checkcnt);
2604#endif
1691 2605
1692# if 0 2606# if 0
2607#if EV_CHILD_ENABLE
1693 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2608 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1694 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2609 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2610#endif
1695# endif 2611# endif
1696#endif 2612#endif
1697} 2613}
1698 2614#endif
1699#endif /* multiplicity */
1700 2615
1701#if EV_MULTIPLICITY 2616#if EV_MULTIPLICITY
1702struct ev_loop * 2617struct ev_loop * ecb_cold
1703ev_default_loop_init (unsigned int flags)
1704#else 2618#else
1705int 2619int
2620#endif
1706ev_default_loop (unsigned int flags) 2621ev_default_loop (unsigned int flags)
1707#endif
1708{ 2622{
1709 if (!ev_default_loop_ptr) 2623 if (!ev_default_loop_ptr)
1710 { 2624 {
1711#if EV_MULTIPLICITY 2625#if EV_MULTIPLICITY
1712 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2626 EV_P = ev_default_loop_ptr = &default_loop_struct;
1713#else 2627#else
1714 ev_default_loop_ptr = 1; 2628 ev_default_loop_ptr = 1;
1715#endif 2629#endif
1716 2630
1717 loop_init (EV_A_ flags); 2631 loop_init (EV_A_ flags);
1718 2632
1719 if (ev_backend (EV_A)) 2633 if (ev_backend (EV_A))
1720 { 2634 {
1721#ifndef _WIN32 2635#if EV_CHILD_ENABLE
1722 ev_signal_init (&childev, childcb, SIGCHLD); 2636 ev_signal_init (&childev, childcb, SIGCHLD);
1723 ev_set_priority (&childev, EV_MAXPRI); 2637 ev_set_priority (&childev, EV_MAXPRI);
1724 ev_signal_start (EV_A_ &childev); 2638 ev_signal_start (EV_A_ &childev);
1725 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2639 ev_unref (EV_A); /* child watcher should not keep loop alive */
1726#endif 2640#endif
… …
1731 2645
1732 return ev_default_loop_ptr; 2646 return ev_default_loop_ptr;
1733} 2647}
1734 2648
1735void 2649void
1736ev_default_destroy (void) 2650ev_loop_fork (EV_P)
1737{ 2651{
1738#if EV_MULTIPLICITY
1739 struct ev_loop *loop = ev_default_loop_ptr;
1740#endif
1741
1742 ev_default_loop_ptr = 0;
1743
1744#ifndef _WIN32
1745 ev_ref (EV_A); /* child watcher */
1746 ev_signal_stop (EV_A_ &childev);
1747#endif
1748
1749 loop_destroy (EV_A);
1750}
1751
1752void
1753ev_default_fork (void)
1754{
1755#if EV_MULTIPLICITY
1756 struct ev_loop *loop = ev_default_loop_ptr;
1757#endif
1758
1759 postfork = 1; /* must be in line with ev_loop_fork */ 2652 postfork = 1; /* must be in line with ev_default_fork */
1760} 2653}
1761 2654
1762/*****************************************************************************/ 2655/*****************************************************************************/
1763 2656
1764void 2657void
1765ev_invoke (EV_P_ void *w, int revents) 2658ev_invoke (EV_P_ void *w, int revents)
1766{ 2659{
1767 EV_CB_INVOKE ((W)w, revents); 2660 EV_CB_INVOKE ((W)w, revents);
1768} 2661}
1769 2662
1770inline_speed void 2663unsigned int
1771call_pending (EV_P) 2664ev_pending_count (EV_P)
2665{
2666 int pri;
2667 unsigned int count = 0;
2668
2669 for (pri = NUMPRI; pri--; )
2670 count += pendingcnt [pri];
2671
2672 return count;
2673}
2674
2675void noinline
2676ev_invoke_pending (EV_P)
1772{ 2677{
1773 int pri; 2678 int pri;
1774 2679
1775 for (pri = NUMPRI; pri--; ) 2680 for (pri = NUMPRI; pri--; )
1776 while (pendingcnt [pri]) 2681 while (pendingcnt [pri])
1777 { 2682 {
1778 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2683 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1779
1780 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1781 /* ^ this is no longer true, as pending_w could be here */
1782 2684
1783 p->w->pending = 0; 2685 p->w->pending = 0;
1784 EV_CB_INVOKE (p->w, p->events); 2686 EV_CB_INVOKE (p->w, p->events);
1785 EV_FREQUENT_CHECK; 2687 EV_FREQUENT_CHECK;
1786 } 2688 }
… …
1843 EV_FREQUENT_CHECK; 2745 EV_FREQUENT_CHECK;
1844 feed_reverse (EV_A_ (W)w); 2746 feed_reverse (EV_A_ (W)w);
1845 } 2747 }
1846 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2748 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1847 2749
1848 feed_reverse_done (EV_A_ EV_TIMEOUT); 2750 feed_reverse_done (EV_A_ EV_TIMER);
1849 } 2751 }
1850} 2752}
1851 2753
1852#if EV_PERIODIC_ENABLE 2754#if EV_PERIODIC_ENABLE
2755
2756static void noinline
2757periodic_recalc (EV_P_ ev_periodic *w)
2758{
2759 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2760 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2761
2762 /* the above almost always errs on the low side */
2763 while (at <= ev_rt_now)
2764 {
2765 ev_tstamp nat = at + w->interval;
2766
2767 /* when resolution fails us, we use ev_rt_now */
2768 if (expect_false (nat == at))
2769 {
2770 at = ev_rt_now;
2771 break;
2772 }
2773
2774 at = nat;
2775 }
2776
2777 ev_at (w) = at;
2778}
2779
1853/* make periodics pending */ 2780/* make periodics pending */
1854inline_size void 2781inline_size void
1855periodics_reify (EV_P) 2782periodics_reify (EV_P)
1856{ 2783{
1857 EV_FREQUENT_CHECK; 2784 EV_FREQUENT_CHECK;
… …
1876 ANHE_at_cache (periodics [HEAP0]); 2803 ANHE_at_cache (periodics [HEAP0]);
1877 downheap (periodics, periodiccnt, HEAP0); 2804 downheap (periodics, periodiccnt, HEAP0);
1878 } 2805 }
1879 else if (w->interval) 2806 else if (w->interval)
1880 { 2807 {
1881 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2808 periodic_recalc (EV_A_ w);
1882 /* if next trigger time is not sufficiently in the future, put it there */
1883 /* this might happen because of floating point inexactness */
1884 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1885 {
1886 ev_at (w) += w->interval;
1887
1888 /* if interval is unreasonably low we might still have a time in the past */
1889 /* so correct this. this will make the periodic very inexact, but the user */
1890 /* has effectively asked to get triggered more often than possible */
1891 if (ev_at (w) < ev_rt_now)
1892 ev_at (w) = ev_rt_now;
1893 }
1894
1895 ANHE_at_cache (periodics [HEAP0]); 2809 ANHE_at_cache (periodics [HEAP0]);
1896 downheap (periodics, periodiccnt, HEAP0); 2810 downheap (periodics, periodiccnt, HEAP0);
1897 } 2811 }
1898 else 2812 else
1899 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2813 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1906 feed_reverse_done (EV_A_ EV_PERIODIC); 2820 feed_reverse_done (EV_A_ EV_PERIODIC);
1907 } 2821 }
1908} 2822}
1909 2823
1910/* simply recalculate all periodics */ 2824/* simply recalculate all periodics */
1911/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2825/* TODO: maybe ensure that at least one event happens when jumping forward? */
1912static void noinline 2826static void noinline ecb_cold
1913periodics_reschedule (EV_P) 2827periodics_reschedule (EV_P)
1914{ 2828{
1915 int i; 2829 int i;
1916 2830
1917 /* adjust periodics after time jump */ 2831 /* adjust periodics after time jump */
… …
1920 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2834 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1921 2835
1922 if (w->reschedule_cb) 2836 if (w->reschedule_cb)
1923 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2837 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1924 else if (w->interval) 2838 else if (w->interval)
1925 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2839 periodic_recalc (EV_A_ w);
1926 2840
1927 ANHE_at_cache (periodics [i]); 2841 ANHE_at_cache (periodics [i]);
1928 } 2842 }
1929 2843
1930 reheap (periodics, periodiccnt); 2844 reheap (periodics, periodiccnt);
1931} 2845}
1932#endif 2846#endif
1933 2847
1934/* adjust all timers by a given offset */ 2848/* adjust all timers by a given offset */
1935static void noinline 2849static void noinline ecb_cold
1936timers_reschedule (EV_P_ ev_tstamp adjust) 2850timers_reschedule (EV_P_ ev_tstamp adjust)
1937{ 2851{
1938 int i; 2852 int i;
1939 2853
1940 for (i = 0; i < timercnt; ++i) 2854 for (i = 0; i < timercnt; ++i)
… …
1944 ANHE_at_cache (*he); 2858 ANHE_at_cache (*he);
1945 } 2859 }
1946} 2860}
1947 2861
1948/* fetch new monotonic and realtime times from the kernel */ 2862/* fetch new monotonic and realtime times from the kernel */
1949/* also detetc if there was a timejump, and act accordingly */ 2863/* also detect if there was a timejump, and act accordingly */
1950inline_speed void 2864inline_speed void
1951time_update (EV_P_ ev_tstamp max_block) 2865time_update (EV_P_ ev_tstamp max_block)
1952{ 2866{
1953#if EV_USE_MONOTONIC 2867#if EV_USE_MONOTONIC
1954 if (expect_true (have_monotonic)) 2868 if (expect_true (have_monotonic))
… …
1977 * doesn't hurt either as we only do this on time-jumps or 2891 * doesn't hurt either as we only do this on time-jumps or
1978 * in the unlikely event of having been preempted here. 2892 * in the unlikely event of having been preempted here.
1979 */ 2893 */
1980 for (i = 4; --i; ) 2894 for (i = 4; --i; )
1981 { 2895 {
2896 ev_tstamp diff;
1982 rtmn_diff = ev_rt_now - mn_now; 2897 rtmn_diff = ev_rt_now - mn_now;
1983 2898
2899 diff = odiff - rtmn_diff;
2900
1984 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2901 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1985 return; /* all is well */ 2902 return; /* all is well */
1986 2903
1987 ev_rt_now = ev_time (); 2904 ev_rt_now = ev_time ();
1988 mn_now = get_clock (); 2905 mn_now = get_clock ();
1989 now_floor = mn_now; 2906 now_floor = mn_now;
… …
2011 2928
2012 mn_now = ev_rt_now; 2929 mn_now = ev_rt_now;
2013 } 2930 }
2014} 2931}
2015 2932
2016static int loop_done;
2017
2018void 2933void
2019ev_loop (EV_P_ int flags) 2934ev_run (EV_P_ int flags)
2020{ 2935{
2936#if EV_FEATURE_API
2937 ++loop_depth;
2938#endif
2939
2940 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2941
2021 loop_done = EVUNLOOP_CANCEL; 2942 loop_done = EVBREAK_CANCEL;
2022 2943
2023 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2944 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2024 2945
2025 do 2946 do
2026 { 2947 {
2027#if EV_VERIFY >= 2 2948#if EV_VERIFY >= 2
2028 ev_loop_verify (EV_A); 2949 ev_verify (EV_A);
2029#endif 2950#endif
2030 2951
2031#ifndef _WIN32 2952#ifndef _WIN32
2032 if (expect_false (curpid)) /* penalise the forking check even more */ 2953 if (expect_false (curpid)) /* penalise the forking check even more */
2033 if (expect_false (getpid () != curpid)) 2954 if (expect_false (getpid () != curpid))
… …
2041 /* we might have forked, so queue fork handlers */ 2962 /* we might have forked, so queue fork handlers */
2042 if (expect_false (postfork)) 2963 if (expect_false (postfork))
2043 if (forkcnt) 2964 if (forkcnt)
2044 { 2965 {
2045 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2966 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2046 call_pending (EV_A); 2967 EV_INVOKE_PENDING;
2047 } 2968 }
2048#endif 2969#endif
2049 2970
2971#if EV_PREPARE_ENABLE
2050 /* queue prepare watchers (and execute them) */ 2972 /* queue prepare watchers (and execute them) */
2051 if (expect_false (preparecnt)) 2973 if (expect_false (preparecnt))
2052 { 2974 {
2053 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2975 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2054 call_pending (EV_A); 2976 EV_INVOKE_PENDING;
2055 } 2977 }
2978#endif
2979
2980 if (expect_false (loop_done))
2981 break;
2056 2982
2057 /* we might have forked, so reify kernel state if necessary */ 2983 /* we might have forked, so reify kernel state if necessary */
2058 if (expect_false (postfork)) 2984 if (expect_false (postfork))
2059 loop_fork (EV_A); 2985 loop_fork (EV_A);
2060 2986
… …
2064 /* calculate blocking time */ 2990 /* calculate blocking time */
2065 { 2991 {
2066 ev_tstamp waittime = 0.; 2992 ev_tstamp waittime = 0.;
2067 ev_tstamp sleeptime = 0.; 2993 ev_tstamp sleeptime = 0.;
2068 2994
2995 /* remember old timestamp for io_blocktime calculation */
2996 ev_tstamp prev_mn_now = mn_now;
2997
2998 /* update time to cancel out callback processing overhead */
2999 time_update (EV_A_ 1e100);
3000
3001 /* from now on, we want a pipe-wake-up */
3002 pipe_write_wanted = 1;
3003
3004 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3005
2069 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3006 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2070 { 3007 {
2071 /* update time to cancel out callback processing overhead */
2072 time_update (EV_A_ 1e100);
2073
2074 waittime = MAX_BLOCKTIME; 3008 waittime = MAX_BLOCKTIME;
2075 3009
2076 if (timercnt) 3010 if (timercnt)
2077 { 3011 {
2078 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3012 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2079 if (waittime > to) waittime = to; 3013 if (waittime > to) waittime = to;
2080 } 3014 }
2081 3015
2082#if EV_PERIODIC_ENABLE 3016#if EV_PERIODIC_ENABLE
2083 if (periodiccnt) 3017 if (periodiccnt)
2084 { 3018 {
2085 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3019 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2086 if (waittime > to) waittime = to; 3020 if (waittime > to) waittime = to;
2087 } 3021 }
2088#endif 3022#endif
2089 3023
3024 /* don't let timeouts decrease the waittime below timeout_blocktime */
2090 if (expect_false (waittime < timeout_blocktime)) 3025 if (expect_false (waittime < timeout_blocktime))
2091 waittime = timeout_blocktime; 3026 waittime = timeout_blocktime;
2092 3027
2093 sleeptime = waittime - backend_fudge; 3028 /* at this point, we NEED to wait, so we have to ensure */
3029 /* to pass a minimum nonzero value to the backend */
3030 if (expect_false (waittime < backend_mintime))
3031 waittime = backend_mintime;
2094 3032
3033 /* extra check because io_blocktime is commonly 0 */
2095 if (expect_true (sleeptime > io_blocktime)) 3034 if (expect_false (io_blocktime))
2096 sleeptime = io_blocktime;
2097
2098 if (sleeptime)
2099 { 3035 {
3036 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3037
3038 if (sleeptime > waittime - backend_mintime)
3039 sleeptime = waittime - backend_mintime;
3040
3041 if (expect_true (sleeptime > 0.))
3042 {
2100 ev_sleep (sleeptime); 3043 ev_sleep (sleeptime);
2101 waittime -= sleeptime; 3044 waittime -= sleeptime;
3045 }
2102 } 3046 }
2103 } 3047 }
2104 3048
3049#if EV_FEATURE_API
2105 ++loop_count; 3050 ++loop_count;
3051#endif
3052 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2106 backend_poll (EV_A_ waittime); 3053 backend_poll (EV_A_ waittime);
3054 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3055
3056 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3057
3058 if (pipe_write_skipped)
3059 {
3060 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3061 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3062 }
3063
2107 3064
2108 /* update ev_rt_now, do magic */ 3065 /* update ev_rt_now, do magic */
2109 time_update (EV_A_ waittime + sleeptime); 3066 time_update (EV_A_ waittime + sleeptime);
2110 } 3067 }
2111 3068
… …
2118#if EV_IDLE_ENABLE 3075#if EV_IDLE_ENABLE
2119 /* queue idle watchers unless other events are pending */ 3076 /* queue idle watchers unless other events are pending */
2120 idle_reify (EV_A); 3077 idle_reify (EV_A);
2121#endif 3078#endif
2122 3079
3080#if EV_CHECK_ENABLE
2123 /* queue check watchers, to be executed first */ 3081 /* queue check watchers, to be executed first */
2124 if (expect_false (checkcnt)) 3082 if (expect_false (checkcnt))
2125 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3083 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3084#endif
2126 3085
2127 call_pending (EV_A); 3086 EV_INVOKE_PENDING;
2128 } 3087 }
2129 while (expect_true ( 3088 while (expect_true (
2130 activecnt 3089 activecnt
2131 && !loop_done 3090 && !loop_done
2132 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3091 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2133 )); 3092 ));
2134 3093
2135 if (loop_done == EVUNLOOP_ONE) 3094 if (loop_done == EVBREAK_ONE)
2136 loop_done = EVUNLOOP_CANCEL; 3095 loop_done = EVBREAK_CANCEL;
3096
3097#if EV_FEATURE_API
3098 --loop_depth;
3099#endif
2137} 3100}
2138 3101
2139void 3102void
2140ev_unloop (EV_P_ int how) 3103ev_break (EV_P_ int how)
2141{ 3104{
2142 loop_done = how; 3105 loop_done = how;
2143} 3106}
2144 3107
2145void 3108void
… …
2192inline_size void 3155inline_size void
2193wlist_del (WL *head, WL elem) 3156wlist_del (WL *head, WL elem)
2194{ 3157{
2195 while (*head) 3158 while (*head)
2196 { 3159 {
2197 if (*head == elem) 3160 if (expect_true (*head == elem))
2198 { 3161 {
2199 *head = elem->next; 3162 *head = elem->next;
2200 return; 3163 break;
2201 } 3164 }
2202 3165
2203 head = &(*head)->next; 3166 head = &(*head)->next;
2204 } 3167 }
2205} 3168}
… …
2233} 3196}
2234 3197
2235inline_size void 3198inline_size void
2236pri_adjust (EV_P_ W w) 3199pri_adjust (EV_P_ W w)
2237{ 3200{
2238 int pri = w->priority; 3201 int pri = ev_priority (w);
2239 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 3202 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2240 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 3203 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2241 w->priority = pri; 3204 ev_set_priority (w, pri);
2242} 3205}
2243 3206
2244inline_speed void 3207inline_speed void
2245ev_start (EV_P_ W w, int active) 3208ev_start (EV_P_ W w, int active)
2246{ 3209{
… …
2265 3228
2266 if (expect_false (ev_is_active (w))) 3229 if (expect_false (ev_is_active (w)))
2267 return; 3230 return;
2268 3231
2269 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3232 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2270 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3233 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2271 3234
2272 EV_FREQUENT_CHECK; 3235 EV_FREQUENT_CHECK;
2273 3236
2274 ev_start (EV_A_ (W)w, 1); 3237 ev_start (EV_A_ (W)w, 1);
2275 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3238 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2276 wlist_add (&anfds[fd].head, (WL)w); 3239 wlist_add (&anfds[fd].head, (WL)w);
2277 3240
2278 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); 3241 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2279 w->events &= ~EV__IOFDSET; 3242 w->events &= ~EV__IOFDSET;
2280 3243
2281 EV_FREQUENT_CHECK; 3244 EV_FREQUENT_CHECK;
2282} 3245}
2283 3246
… …
2293 EV_FREQUENT_CHECK; 3256 EV_FREQUENT_CHECK;
2294 3257
2295 wlist_del (&anfds[w->fd].head, (WL)w); 3258 wlist_del (&anfds[w->fd].head, (WL)w);
2296 ev_stop (EV_A_ (W)w); 3259 ev_stop (EV_A_ (W)w);
2297 3260
2298 fd_change (EV_A_ w->fd, 1); 3261 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2299 3262
2300 EV_FREQUENT_CHECK; 3263 EV_FREQUENT_CHECK;
2301} 3264}
2302 3265
2303void noinline 3266void noinline
… …
2345 timers [active] = timers [timercnt + HEAP0]; 3308 timers [active] = timers [timercnt + HEAP0];
2346 adjustheap (timers, timercnt, active); 3309 adjustheap (timers, timercnt, active);
2347 } 3310 }
2348 } 3311 }
2349 3312
2350 EV_FREQUENT_CHECK;
2351
2352 ev_at (w) -= mn_now; 3313 ev_at (w) -= mn_now;
2353 3314
2354 ev_stop (EV_A_ (W)w); 3315 ev_stop (EV_A_ (W)w);
3316
3317 EV_FREQUENT_CHECK;
2355} 3318}
2356 3319
2357void noinline 3320void noinline
2358ev_timer_again (EV_P_ ev_timer *w) 3321ev_timer_again (EV_P_ ev_timer *w)
2359{ 3322{
2360 EV_FREQUENT_CHECK; 3323 EV_FREQUENT_CHECK;
3324
3325 clear_pending (EV_A_ (W)w);
2361 3326
2362 if (ev_is_active (w)) 3327 if (ev_is_active (w))
2363 { 3328 {
2364 if (w->repeat) 3329 if (w->repeat)
2365 { 3330 {
… …
2377 } 3342 }
2378 3343
2379 EV_FREQUENT_CHECK; 3344 EV_FREQUENT_CHECK;
2380} 3345}
2381 3346
3347ev_tstamp
3348ev_timer_remaining (EV_P_ ev_timer *w)
3349{
3350 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3351}
3352
2382#if EV_PERIODIC_ENABLE 3353#if EV_PERIODIC_ENABLE
2383void noinline 3354void noinline
2384ev_periodic_start (EV_P_ ev_periodic *w) 3355ev_periodic_start (EV_P_ ev_periodic *w)
2385{ 3356{
2386 if (expect_false (ev_is_active (w))) 3357 if (expect_false (ev_is_active (w)))
… …
2389 if (w->reschedule_cb) 3360 if (w->reschedule_cb)
2390 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3361 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2391 else if (w->interval) 3362 else if (w->interval)
2392 { 3363 {
2393 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3364 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2394 /* this formula differs from the one in periodic_reify because we do not always round up */ 3365 periodic_recalc (EV_A_ w);
2395 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2396 } 3366 }
2397 else 3367 else
2398 ev_at (w) = w->offset; 3368 ev_at (w) = w->offset;
2399 3369
2400 EV_FREQUENT_CHECK; 3370 EV_FREQUENT_CHECK;
… …
2432 periodics [active] = periodics [periodiccnt + HEAP0]; 3402 periodics [active] = periodics [periodiccnt + HEAP0];
2433 adjustheap (periodics, periodiccnt, active); 3403 adjustheap (periodics, periodiccnt, active);
2434 } 3404 }
2435 } 3405 }
2436 3406
2437 EV_FREQUENT_CHECK;
2438
2439 ev_stop (EV_A_ (W)w); 3407 ev_stop (EV_A_ (W)w);
3408
3409 EV_FREQUENT_CHECK;
2440} 3410}
2441 3411
2442void noinline 3412void noinline
2443ev_periodic_again (EV_P_ ev_periodic *w) 3413ev_periodic_again (EV_P_ ev_periodic *w)
2444{ 3414{
… …
2450 3420
2451#ifndef SA_RESTART 3421#ifndef SA_RESTART
2452# define SA_RESTART 0 3422# define SA_RESTART 0
2453#endif 3423#endif
2454 3424
3425#if EV_SIGNAL_ENABLE
3426
2455void noinline 3427void noinline
2456ev_signal_start (EV_P_ ev_signal *w) 3428ev_signal_start (EV_P_ ev_signal *w)
2457{ 3429{
2458#if EV_MULTIPLICITY
2459 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2460#endif
2461 if (expect_false (ev_is_active (w))) 3430 if (expect_false (ev_is_active (w)))
2462 return; 3431 return;
2463 3432
2464 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 3433 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2465 3434
2466 evpipe_init (EV_A); 3435#if EV_MULTIPLICITY
3436 assert (("libev: a signal must not be attached to two different loops",
3437 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2467 3438
2468 EV_FREQUENT_CHECK; 3439 signals [w->signum - 1].loop = EV_A;
3440#endif
2469 3441
3442 EV_FREQUENT_CHECK;
3443
3444#if EV_USE_SIGNALFD
3445 if (sigfd == -2)
2470 { 3446 {
2471#ifndef _WIN32 3447 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2472 sigset_t full, prev; 3448 if (sigfd < 0 && errno == EINVAL)
2473 sigfillset (&full); 3449 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2474 sigprocmask (SIG_SETMASK, &full, &prev);
2475#endif
2476 3450
2477 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 3451 if (sigfd >= 0)
3452 {
3453 fd_intern (sigfd); /* doing it twice will not hurt */
2478 3454
2479#ifndef _WIN32 3455 sigemptyset (&sigfd_set);
2480 sigprocmask (SIG_SETMASK, &prev, 0); 3456
2481#endif 3457 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3458 ev_set_priority (&sigfd_w, EV_MAXPRI);
3459 ev_io_start (EV_A_ &sigfd_w);
3460 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3461 }
2482 } 3462 }
3463
3464 if (sigfd >= 0)
3465 {
3466 /* TODO: check .head */
3467 sigaddset (&sigfd_set, w->signum);
3468 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3469
3470 signalfd (sigfd, &sigfd_set, 0);
3471 }
3472#endif
2483 3473
2484 ev_start (EV_A_ (W)w, 1); 3474 ev_start (EV_A_ (W)w, 1);
2485 wlist_add (&signals [w->signum - 1].head, (WL)w); 3475 wlist_add (&signals [w->signum - 1].head, (WL)w);
2486 3476
2487 if (!((WL)w)->next) 3477 if (!((WL)w)->next)
3478# if EV_USE_SIGNALFD
3479 if (sigfd < 0) /*TODO*/
3480# endif
2488 { 3481 {
2489#if _WIN32 3482# ifdef _WIN32
3483 evpipe_init (EV_A);
3484
2490 signal (w->signum, ev_sighandler); 3485 signal (w->signum, ev_sighandler);
2491#else 3486# else
2492 struct sigaction sa; 3487 struct sigaction sa;
3488
3489 evpipe_init (EV_A);
3490
2493 sa.sa_handler = ev_sighandler; 3491 sa.sa_handler = ev_sighandler;
2494 sigfillset (&sa.sa_mask); 3492 sigfillset (&sa.sa_mask);
2495 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3493 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2496 sigaction (w->signum, &sa, 0); 3494 sigaction (w->signum, &sa, 0);
3495
3496 if (origflags & EVFLAG_NOSIGMASK)
3497 {
3498 sigemptyset (&sa.sa_mask);
3499 sigaddset (&sa.sa_mask, w->signum);
3500 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3501 }
2497#endif 3502#endif
2498 } 3503 }
2499 3504
2500 EV_FREQUENT_CHECK; 3505 EV_FREQUENT_CHECK;
2501} 3506}
2502 3507
2503void noinline 3508void noinline
… …
2511 3516
2512 wlist_del (&signals [w->signum - 1].head, (WL)w); 3517 wlist_del (&signals [w->signum - 1].head, (WL)w);
2513 ev_stop (EV_A_ (W)w); 3518 ev_stop (EV_A_ (W)w);
2514 3519
2515 if (!signals [w->signum - 1].head) 3520 if (!signals [w->signum - 1].head)
3521 {
3522#if EV_MULTIPLICITY
3523 signals [w->signum - 1].loop = 0; /* unattach from signal */
3524#endif
3525#if EV_USE_SIGNALFD
3526 if (sigfd >= 0)
3527 {
3528 sigset_t ss;
3529
3530 sigemptyset (&ss);
3531 sigaddset (&ss, w->signum);
3532 sigdelset (&sigfd_set, w->signum);
3533
3534 signalfd (sigfd, &sigfd_set, 0);
3535 sigprocmask (SIG_UNBLOCK, &ss, 0);
3536 }
3537 else
3538#endif
2516 signal (w->signum, SIG_DFL); 3539 signal (w->signum, SIG_DFL);
3540 }
2517 3541
2518 EV_FREQUENT_CHECK; 3542 EV_FREQUENT_CHECK;
2519} 3543}
3544
3545#endif
3546
3547#if EV_CHILD_ENABLE
2520 3548
2521void 3549void
2522ev_child_start (EV_P_ ev_child *w) 3550ev_child_start (EV_P_ ev_child *w)
2523{ 3551{
2524#if EV_MULTIPLICITY 3552#if EV_MULTIPLICITY
… …
2528 return; 3556 return;
2529 3557
2530 EV_FREQUENT_CHECK; 3558 EV_FREQUENT_CHECK;
2531 3559
2532 ev_start (EV_A_ (W)w, 1); 3560 ev_start (EV_A_ (W)w, 1);
2533 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3561 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2534 3562
2535 EV_FREQUENT_CHECK; 3563 EV_FREQUENT_CHECK;
2536} 3564}
2537 3565
2538void 3566void
… …
2542 if (expect_false (!ev_is_active (w))) 3570 if (expect_false (!ev_is_active (w)))
2543 return; 3571 return;
2544 3572
2545 EV_FREQUENT_CHECK; 3573 EV_FREQUENT_CHECK;
2546 3574
2547 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3575 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2548 ev_stop (EV_A_ (W)w); 3576 ev_stop (EV_A_ (W)w);
2549 3577
2550 EV_FREQUENT_CHECK; 3578 EV_FREQUENT_CHECK;
2551} 3579}
3580
3581#endif
2552 3582
2553#if EV_STAT_ENABLE 3583#if EV_STAT_ENABLE
2554 3584
2555# ifdef _WIN32 3585# ifdef _WIN32
2556# undef lstat 3586# undef lstat
… …
2562#define MIN_STAT_INTERVAL 0.1074891 3592#define MIN_STAT_INTERVAL 0.1074891
2563 3593
2564static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3594static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2565 3595
2566#if EV_USE_INOTIFY 3596#if EV_USE_INOTIFY
2567# define EV_INOTIFY_BUFSIZE 8192 3597
3598/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3599# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2568 3600
2569static void noinline 3601static void noinline
2570infy_add (EV_P_ ev_stat *w) 3602infy_add (EV_P_ ev_stat *w)
2571{ 3603{
2572 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); 3604 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);
2573 3605
2574 if (w->wd < 0) 3606 if (w->wd >= 0)
3607 {
3608 struct statfs sfs;
3609
3610 /* now local changes will be tracked by inotify, but remote changes won't */
3611 /* unless the filesystem is known to be local, we therefore still poll */
3612 /* also do poll on <2.6.25, but with normal frequency */
3613
3614 if (!fs_2625)
3615 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3616 else if (!statfs (w->path, &sfs)
3617 && (sfs.f_type == 0x1373 /* devfs */
3618 || sfs.f_type == 0xEF53 /* ext2/3 */
3619 || sfs.f_type == 0x3153464a /* jfs */
3620 || sfs.f_type == 0x52654973 /* reiser3 */
3621 || sfs.f_type == 0x01021994 /* tempfs */
3622 || sfs.f_type == 0x58465342 /* xfs */))
3623 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3624 else
3625 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2575 { 3626 }
3627 else
3628 {
3629 /* can't use inotify, continue to stat */
2576 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3630 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2577 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2578 3631
2579 /* monitor some parent directory for speedup hints */ 3632 /* if path is not there, monitor some parent directory for speedup hints */
2580 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3633 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2581 /* but an efficiency issue only */ 3634 /* but an efficiency issue only */
2582 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3635 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2583 { 3636 {
2584 char path [4096]; 3637 char path [4096];
… …
2594 if (!pend || pend == path) 3647 if (!pend || pend == path)
2595 break; 3648 break;
2596 3649
2597 *pend = 0; 3650 *pend = 0;
2598 w->wd = inotify_add_watch (fs_fd, path, mask); 3651 w->wd = inotify_add_watch (fs_fd, path, mask);
2599 } 3652 }
2600 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3653 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2601 } 3654 }
2602 } 3655 }
2603 3656
2604 if (w->wd >= 0) 3657 if (w->wd >= 0)
2605 {
2606 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3658 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2607 3659
2608 /* now local changes will be tracked by inotify, but remote changes won't */ 3660 /* now re-arm timer, if required */
2609 /* unless the filesystem it known to be local, we therefore still poll */ 3661 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2610 /* also do poll on <2.6.25, but with normal frequency */
2611 struct statfs sfs;
2612
2613 if (fs_2625 && !statfs (w->path, &sfs))
2614 if (sfs.f_type == 0x1373 /* devfs */
2615 || sfs.f_type == 0xEF53 /* ext2/3 */
2616 || sfs.f_type == 0x3153464a /* jfs */
2617 || sfs.f_type == 0x52654973 /* reiser3 */
2618 || sfs.f_type == 0x01021994 /* tempfs */
2619 || sfs.f_type == 0x58465342 /* xfs */)
2620 return;
2621
2622 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2623 ev_timer_again (EV_A_ &w->timer); 3662 ev_timer_again (EV_A_ &w->timer);
2624 } 3663 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2625} 3664}
2626 3665
2627static void noinline 3666static void noinline
2628infy_del (EV_P_ ev_stat *w) 3667infy_del (EV_P_ ev_stat *w)
2629{ 3668{
… …
2632 3671
2633 if (wd < 0) 3672 if (wd < 0)
2634 return; 3673 return;
2635 3674
2636 w->wd = -2; 3675 w->wd = -2;
2637 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3676 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2638 wlist_del (&fs_hash [slot].head, (WL)w); 3677 wlist_del (&fs_hash [slot].head, (WL)w);
2639 3678
2640 /* remove this watcher, if others are watching it, they will rearm */ 3679 /* remove this watcher, if others are watching it, they will rearm */
2641 inotify_rm_watch (fs_fd, wd); 3680 inotify_rm_watch (fs_fd, wd);
2642} 3681}
… …
2644static void noinline 3683static void noinline
2645infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3684infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2646{ 3685{
2647 if (slot < 0) 3686 if (slot < 0)
2648 /* overflow, need to check for all hash slots */ 3687 /* overflow, need to check for all hash slots */
2649 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3688 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2650 infy_wd (EV_A_ slot, wd, ev); 3689 infy_wd (EV_A_ slot, wd, ev);
2651 else 3690 else
2652 { 3691 {
2653 WL w_; 3692 WL w_;
2654 3693
2655 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3694 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2656 { 3695 {
2657 ev_stat *w = (ev_stat *)w_; 3696 ev_stat *w = (ev_stat *)w_;
2658 w_ = w_->next; /* lets us remove this watcher and all before it */ 3697 w_ = w_->next; /* lets us remove this watcher and all before it */
2659 3698
2660 if (w->wd == wd || wd == -1) 3699 if (w->wd == wd || wd == -1)
2661 { 3700 {
2662 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3701 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2663 { 3702 {
2664 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3703 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2665 w->wd = -1; 3704 w->wd = -1;
2666 infy_add (EV_A_ w); /* re-add, no matter what */ 3705 infy_add (EV_A_ w); /* re-add, no matter what */
2667 } 3706 }
2668 3707
2669 stat_timer_cb (EV_A_ &w->timer, 0); 3708 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2674 3713
2675static void 3714static void
2676infy_cb (EV_P_ ev_io *w, int revents) 3715infy_cb (EV_P_ ev_io *w, int revents)
2677{ 3716{
2678 char buf [EV_INOTIFY_BUFSIZE]; 3717 char buf [EV_INOTIFY_BUFSIZE];
2679 struct inotify_event *ev = (struct inotify_event *)buf;
2680 int ofs; 3718 int ofs;
2681 int len = read (fs_fd, buf, sizeof (buf)); 3719 int len = read (fs_fd, buf, sizeof (buf));
2682 3720
2683 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3721 for (ofs = 0; ofs < len; )
3722 {
3723 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2684 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3724 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3725 ofs += sizeof (struct inotify_event) + ev->len;
3726 }
2685} 3727}
2686 3728
2687inline_size void 3729inline_size void ecb_cold
2688check_2625 (EV_P) 3730ev_check_2625 (EV_P)
2689{ 3731{
2690 /* kernels < 2.6.25 are borked 3732 /* kernels < 2.6.25 are borked
2691 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3733 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2692 */ 3734 */
2693 struct utsname buf; 3735 if (ev_linux_version () < 0x020619)
2694 int major, minor, micro;
2695
2696 if (uname (&buf))
2697 return; 3736 return;
2698 3737
2699 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2700 return;
2701
2702 if (major < 2
2703 || (major == 2 && minor < 6)
2704 || (major == 2 && minor == 6 && micro < 25))
2705 return;
2706
2707 fs_2625 = 1; 3738 fs_2625 = 1;
3739}
3740
3741inline_size int
3742infy_newfd (void)
3743{
3744#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3745 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3746 if (fd >= 0)
3747 return fd;
3748#endif
3749 return inotify_init ();
2708} 3750}
2709 3751
2710inline_size void 3752inline_size void
2711infy_init (EV_P) 3753infy_init (EV_P)
2712{ 3754{
2713 if (fs_fd != -2) 3755 if (fs_fd != -2)
2714 return; 3756 return;
2715 3757
2716 fs_fd = -1; 3758 fs_fd = -1;
2717 3759
2718 check_2625 (EV_A); 3760 ev_check_2625 (EV_A);
2719 3761
2720 fs_fd = inotify_init (); 3762 fs_fd = infy_newfd ();
2721 3763
2722 if (fs_fd >= 0) 3764 if (fs_fd >= 0)
2723 { 3765 {
3766 fd_intern (fs_fd);
2724 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3767 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2725 ev_set_priority (&fs_w, EV_MAXPRI); 3768 ev_set_priority (&fs_w, EV_MAXPRI);
2726 ev_io_start (EV_A_ &fs_w); 3769 ev_io_start (EV_A_ &fs_w);
3770 ev_unref (EV_A);
2727 } 3771 }
2728} 3772}
2729 3773
2730inline_size void 3774inline_size void
2731infy_fork (EV_P) 3775infy_fork (EV_P)
… …
2733 int slot; 3777 int slot;
2734 3778
2735 if (fs_fd < 0) 3779 if (fs_fd < 0)
2736 return; 3780 return;
2737 3781
3782 ev_ref (EV_A);
3783 ev_io_stop (EV_A_ &fs_w);
2738 close (fs_fd); 3784 close (fs_fd);
2739 fs_fd = inotify_init (); 3785 fs_fd = infy_newfd ();
2740 3786
3787 if (fs_fd >= 0)
3788 {
3789 fd_intern (fs_fd);
3790 ev_io_set (&fs_w, fs_fd, EV_READ);
3791 ev_io_start (EV_A_ &fs_w);
3792 ev_unref (EV_A);
3793 }
3794
2741 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3795 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2742 { 3796 {
2743 WL w_ = fs_hash [slot].head; 3797 WL w_ = fs_hash [slot].head;
2744 fs_hash [slot].head = 0; 3798 fs_hash [slot].head = 0;
2745 3799
2746 while (w_) 3800 while (w_)
… …
2751 w->wd = -1; 3805 w->wd = -1;
2752 3806
2753 if (fs_fd >= 0) 3807 if (fs_fd >= 0)
2754 infy_add (EV_A_ w); /* re-add, no matter what */ 3808 infy_add (EV_A_ w); /* re-add, no matter what */
2755 else 3809 else
3810 {
3811 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3812 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2756 ev_timer_again (EV_A_ &w->timer); 3813 ev_timer_again (EV_A_ &w->timer);
3814 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3815 }
2757 } 3816 }
2758 } 3817 }
2759} 3818}
2760 3819
2761#endif 3820#endif
… …
2778static void noinline 3837static void noinline
2779stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3838stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2780{ 3839{
2781 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3840 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2782 3841
2783 /* we copy this here each the time so that */ 3842 ev_statdata prev = w->attr;
2784 /* prev has the old value when the callback gets invoked */
2785 w->prev = w->attr;
2786 ev_stat_stat (EV_A_ w); 3843 ev_stat_stat (EV_A_ w);
2787 3844
2788 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3845 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2789 if ( 3846 if (
2790 w->prev.st_dev != w->attr.st_dev 3847 prev.st_dev != w->attr.st_dev
2791 || w->prev.st_ino != w->attr.st_ino 3848 || prev.st_ino != w->attr.st_ino
2792 || w->prev.st_mode != w->attr.st_mode 3849 || prev.st_mode != w->attr.st_mode
2793 || w->prev.st_nlink != w->attr.st_nlink 3850 || prev.st_nlink != w->attr.st_nlink
2794 || w->prev.st_uid != w->attr.st_uid 3851 || prev.st_uid != w->attr.st_uid
2795 || w->prev.st_gid != w->attr.st_gid 3852 || prev.st_gid != w->attr.st_gid
2796 || w->prev.st_rdev != w->attr.st_rdev 3853 || prev.st_rdev != w->attr.st_rdev
2797 || w->prev.st_size != w->attr.st_size 3854 || prev.st_size != w->attr.st_size
2798 || w->prev.st_atime != w->attr.st_atime 3855 || prev.st_atime != w->attr.st_atime
2799 || w->prev.st_mtime != w->attr.st_mtime 3856 || prev.st_mtime != w->attr.st_mtime
2800 || w->prev.st_ctime != w->attr.st_ctime 3857 || prev.st_ctime != w->attr.st_ctime
2801 ) { 3858 ) {
3859 /* we only update w->prev on actual differences */
3860 /* in case we test more often than invoke the callback, */
3861 /* to ensure that prev is always different to attr */
3862 w->prev = prev;
3863
2802 #if EV_USE_INOTIFY 3864 #if EV_USE_INOTIFY
2803 if (fs_fd >= 0) 3865 if (fs_fd >= 0)
2804 { 3866 {
2805 infy_del (EV_A_ w); 3867 infy_del (EV_A_ w);
2806 infy_add (EV_A_ w); 3868 infy_add (EV_A_ w);
… …
2831 3893
2832 if (fs_fd >= 0) 3894 if (fs_fd >= 0)
2833 infy_add (EV_A_ w); 3895 infy_add (EV_A_ w);
2834 else 3896 else
2835#endif 3897#endif
3898 {
2836 ev_timer_again (EV_A_ &w->timer); 3899 ev_timer_again (EV_A_ &w->timer);
3900 ev_unref (EV_A);
3901 }
2837 3902
2838 ev_start (EV_A_ (W)w, 1); 3903 ev_start (EV_A_ (W)w, 1);
2839 3904
2840 EV_FREQUENT_CHECK; 3905 EV_FREQUENT_CHECK;
2841} 3906}
… …
2850 EV_FREQUENT_CHECK; 3915 EV_FREQUENT_CHECK;
2851 3916
2852#if EV_USE_INOTIFY 3917#if EV_USE_INOTIFY
2853 infy_del (EV_A_ w); 3918 infy_del (EV_A_ w);
2854#endif 3919#endif
3920
3921 if (ev_is_active (&w->timer))
3922 {
3923 ev_ref (EV_A);
2855 ev_timer_stop (EV_A_ &w->timer); 3924 ev_timer_stop (EV_A_ &w->timer);
3925 }
2856 3926
2857 ev_stop (EV_A_ (W)w); 3927 ev_stop (EV_A_ (W)w);
2858 3928
2859 EV_FREQUENT_CHECK; 3929 EV_FREQUENT_CHECK;
2860} 3930}
… …
2905 3975
2906 EV_FREQUENT_CHECK; 3976 EV_FREQUENT_CHECK;
2907} 3977}
2908#endif 3978#endif
2909 3979
3980#if EV_PREPARE_ENABLE
2910void 3981void
2911ev_prepare_start (EV_P_ ev_prepare *w) 3982ev_prepare_start (EV_P_ ev_prepare *w)
2912{ 3983{
2913 if (expect_false (ev_is_active (w))) 3984 if (expect_false (ev_is_active (w)))
2914 return; 3985 return;
… …
2940 4011
2941 ev_stop (EV_A_ (W)w); 4012 ev_stop (EV_A_ (W)w);
2942 4013
2943 EV_FREQUENT_CHECK; 4014 EV_FREQUENT_CHECK;
2944} 4015}
4016#endif
2945 4017
4018#if EV_CHECK_ENABLE
2946void 4019void
2947ev_check_start (EV_P_ ev_check *w) 4020ev_check_start (EV_P_ ev_check *w)
2948{ 4021{
2949 if (expect_false (ev_is_active (w))) 4022 if (expect_false (ev_is_active (w)))
2950 return; 4023 return;
… …
2976 4049
2977 ev_stop (EV_A_ (W)w); 4050 ev_stop (EV_A_ (W)w);
2978 4051
2979 EV_FREQUENT_CHECK; 4052 EV_FREQUENT_CHECK;
2980} 4053}
4054#endif
2981 4055
2982#if EV_EMBED_ENABLE 4056#if EV_EMBED_ENABLE
2983void noinline 4057void noinline
2984ev_embed_sweep (EV_P_ ev_embed *w) 4058ev_embed_sweep (EV_P_ ev_embed *w)
2985{ 4059{
2986 ev_loop (w->other, EVLOOP_NONBLOCK); 4060 ev_run (w->other, EVRUN_NOWAIT);
2987} 4061}
2988 4062
2989static void 4063static void
2990embed_io_cb (EV_P_ ev_io *io, int revents) 4064embed_io_cb (EV_P_ ev_io *io, int revents)
2991{ 4065{
2992 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4066 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2993 4067
2994 if (ev_cb (w)) 4068 if (ev_cb (w))
2995 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4069 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2996 else 4070 else
2997 ev_loop (w->other, EVLOOP_NONBLOCK); 4071 ev_run (w->other, EVRUN_NOWAIT);
2998} 4072}
2999 4073
3000static void 4074static void
3001embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4075embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3002{ 4076{
3003 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4077 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3004 4078
3005 { 4079 {
3006 struct ev_loop *loop = w->other; 4080 EV_P = w->other;
3007 4081
3008 while (fdchangecnt) 4082 while (fdchangecnt)
3009 { 4083 {
3010 fd_reify (EV_A); 4084 fd_reify (EV_A);
3011 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4085 ev_run (EV_A_ EVRUN_NOWAIT);
3012 } 4086 }
3013 } 4087 }
3014} 4088}
3015 4089
3016static void 4090static void
… …
3019 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 4093 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3020 4094
3021 ev_embed_stop (EV_A_ w); 4095 ev_embed_stop (EV_A_ w);
3022 4096
3023 { 4097 {
3024 struct ev_loop *loop = w->other; 4098 EV_P = w->other;
3025 4099
3026 ev_loop_fork (EV_A); 4100 ev_loop_fork (EV_A);
3027 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4101 ev_run (EV_A_ EVRUN_NOWAIT);
3028 } 4102 }
3029 4103
3030 ev_embed_start (EV_A_ w); 4104 ev_embed_start (EV_A_ w);
3031} 4105}
3032 4106
… …
3043{ 4117{
3044 if (expect_false (ev_is_active (w))) 4118 if (expect_false (ev_is_active (w)))
3045 return; 4119 return;
3046 4120
3047 { 4121 {
3048 struct ev_loop *loop = w->other; 4122 EV_P = w->other;
3049 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4123 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3050 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4124 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3051 } 4125 }
3052 4126
3053 EV_FREQUENT_CHECK; 4127 EV_FREQUENT_CHECK;
… …
3080 4154
3081 ev_io_stop (EV_A_ &w->io); 4155 ev_io_stop (EV_A_ &w->io);
3082 ev_prepare_stop (EV_A_ &w->prepare); 4156 ev_prepare_stop (EV_A_ &w->prepare);
3083 ev_fork_stop (EV_A_ &w->fork); 4157 ev_fork_stop (EV_A_ &w->fork);
3084 4158
4159 ev_stop (EV_A_ (W)w);
4160
3085 EV_FREQUENT_CHECK; 4161 EV_FREQUENT_CHECK;
3086} 4162}
3087#endif 4163#endif
3088 4164
3089#if EV_FORK_ENABLE 4165#if EV_FORK_ENABLE
… …
3122 4198
3123 EV_FREQUENT_CHECK; 4199 EV_FREQUENT_CHECK;
3124} 4200}
3125#endif 4201#endif
3126 4202
4203#if EV_CLEANUP_ENABLE
4204void
4205ev_cleanup_start (EV_P_ ev_cleanup *w)
4206{
4207 if (expect_false (ev_is_active (w)))
4208 return;
4209
4210 EV_FREQUENT_CHECK;
4211
4212 ev_start (EV_A_ (W)w, ++cleanupcnt);
4213 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4214 cleanups [cleanupcnt - 1] = w;
4215
4216 /* cleanup watchers should never keep a refcount on the loop */
4217 ev_unref (EV_A);
4218 EV_FREQUENT_CHECK;
4219}
4220
4221void
4222ev_cleanup_stop (EV_P_ ev_cleanup *w)
4223{
4224 clear_pending (EV_A_ (W)w);
4225 if (expect_false (!ev_is_active (w)))
4226 return;
4227
4228 EV_FREQUENT_CHECK;
4229 ev_ref (EV_A);
4230
4231 {
4232 int active = ev_active (w);
4233
4234 cleanups [active - 1] = cleanups [--cleanupcnt];
4235 ev_active (cleanups [active - 1]) = active;
4236 }
4237
4238 ev_stop (EV_A_ (W)w);
4239
4240 EV_FREQUENT_CHECK;
4241}
4242#endif
4243
3127#if EV_ASYNC_ENABLE 4244#if EV_ASYNC_ENABLE
3128void 4245void
3129ev_async_start (EV_P_ ev_async *w) 4246ev_async_start (EV_P_ ev_async *w)
3130{ 4247{
3131 if (expect_false (ev_is_active (w))) 4248 if (expect_false (ev_is_active (w)))
3132 return; 4249 return;
3133 4250
4251 w->sent = 0;
4252
3134 evpipe_init (EV_A); 4253 evpipe_init (EV_A);
3135 4254
3136 EV_FREQUENT_CHECK; 4255 EV_FREQUENT_CHECK;
3137 4256
3138 ev_start (EV_A_ (W)w, ++asynccnt); 4257 ev_start (EV_A_ (W)w, ++asynccnt);
… …
3165 4284
3166void 4285void
3167ev_async_send (EV_P_ ev_async *w) 4286ev_async_send (EV_P_ ev_async *w)
3168{ 4287{
3169 w->sent = 1; 4288 w->sent = 1;
3170 evpipe_write (EV_A_ &gotasync); 4289 evpipe_write (EV_A_ &async_pending);
3171} 4290}
3172#endif 4291#endif
3173 4292
3174/*****************************************************************************/ 4293/*****************************************************************************/
3175 4294
… …
3215{ 4334{
3216 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4335 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3217 4336
3218 if (expect_false (!once)) 4337 if (expect_false (!once))
3219 { 4338 {
3220 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4339 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3221 return; 4340 return;
3222 } 4341 }
3223 4342
3224 once->cb = cb; 4343 once->cb = cb;
3225 once->arg = arg; 4344 once->arg = arg;
… …
3240} 4359}
3241 4360
3242/*****************************************************************************/ 4361/*****************************************************************************/
3243 4362
3244#if EV_WALK_ENABLE 4363#if EV_WALK_ENABLE
3245void 4364void ecb_cold
3246ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4365ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3247{ 4366{
3248 int i, j; 4367 int i, j;
3249 ev_watcher_list *wl, *wn; 4368 ev_watcher_list *wl, *wn;
3250 4369
… …
3294 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4413 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3295#endif 4414#endif
3296 4415
3297#if EV_IDLE_ENABLE 4416#if EV_IDLE_ENABLE
3298 if (types & EV_IDLE) 4417 if (types & EV_IDLE)
3299 for (j = NUMPRI; i--; ) 4418 for (j = NUMPRI; j--; )
3300 for (i = idlecnt [j]; i--; ) 4419 for (i = idlecnt [j]; i--; )
3301 cb (EV_A_ EV_IDLE, idles [j][i]); 4420 cb (EV_A_ EV_IDLE, idles [j][i]);
3302#endif 4421#endif
3303 4422
3304#if EV_FORK_ENABLE 4423#if EV_FORK_ENABLE
… …
3312 if (types & EV_ASYNC) 4431 if (types & EV_ASYNC)
3313 for (i = asynccnt; i--; ) 4432 for (i = asynccnt; i--; )
3314 cb (EV_A_ EV_ASYNC, asyncs [i]); 4433 cb (EV_A_ EV_ASYNC, asyncs [i]);
3315#endif 4434#endif
3316 4435
4436#if EV_PREPARE_ENABLE
3317 if (types & EV_PREPARE) 4437 if (types & EV_PREPARE)
3318 for (i = preparecnt; i--; ) 4438 for (i = preparecnt; i--; )
3319#if EV_EMBED_ENABLE 4439# if EV_EMBED_ENABLE
3320 if (ev_cb (prepares [i]) != embed_prepare_cb) 4440 if (ev_cb (prepares [i]) != embed_prepare_cb)
3321#endif 4441# endif
3322 cb (EV_A_ EV_PREPARE, prepares [i]); 4442 cb (EV_A_ EV_PREPARE, prepares [i]);
4443#endif
3323 4444
4445#if EV_CHECK_ENABLE
3324 if (types & EV_CHECK) 4446 if (types & EV_CHECK)
3325 for (i = checkcnt; i--; ) 4447 for (i = checkcnt; i--; )
3326 cb (EV_A_ EV_CHECK, checks [i]); 4448 cb (EV_A_ EV_CHECK, checks [i]);
4449#endif
3327 4450
4451#if EV_SIGNAL_ENABLE
3328 if (types & EV_SIGNAL) 4452 if (types & EV_SIGNAL)
3329 for (i = 0; i < signalmax; ++i) 4453 for (i = 0; i < EV_NSIG - 1; ++i)
3330 for (wl = signals [i].head; wl; ) 4454 for (wl = signals [i].head; wl; )
3331 { 4455 {
3332 wn = wl->next; 4456 wn = wl->next;
3333 cb (EV_A_ EV_SIGNAL, wl); 4457 cb (EV_A_ EV_SIGNAL, wl);
3334 wl = wn; 4458 wl = wn;
3335 } 4459 }
4460#endif
3336 4461
4462#if EV_CHILD_ENABLE
3337 if (types & EV_CHILD) 4463 if (types & EV_CHILD)
3338 for (i = EV_PID_HASHSIZE; i--; ) 4464 for (i = (EV_PID_HASHSIZE); i--; )
3339 for (wl = childs [i]; wl; ) 4465 for (wl = childs [i]; wl; )
3340 { 4466 {
3341 wn = wl->next; 4467 wn = wl->next;
3342 cb (EV_A_ EV_CHILD, wl); 4468 cb (EV_A_ EV_CHILD, wl);
3343 wl = wn; 4469 wl = wn;
3344 } 4470 }
4471#endif
3345/* EV_STAT 0x00001000 /* stat data changed */ 4472/* EV_STAT 0x00001000 /* stat data changed */
3346/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4473/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3347} 4474}
3348#endif 4475#endif
3349 4476
3350#if EV_MULTIPLICITY 4477#if EV_MULTIPLICITY
3351 #include "ev_wrap.h" 4478 #include "ev_wrap.h"
3352#endif 4479#endif
3353 4480
3354#ifdef __cplusplus
3355}
3356#endif
3357

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