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Comparing libev/ev.c (file contents):
Revision 1.288 by root, Sat Apr 25 14:12:48 2009 UTC vs.
Revision 1.416 by root, Mon Apr 2 20:12:16 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 #elif __xlC__
607 #define ECB_MEMORY_FENCE __sync ()
608 #endif
609#endif
610
611#ifndef ECB_MEMORY_FENCE
612 #if !ECB_AVOID_PTHREADS
613 /*
614 * if you get undefined symbol references to pthread_mutex_lock,
615 * or failure to find pthread.h, then you should implement
616 * the ECB_MEMORY_FENCE operations for your cpu/compiler
617 * OR provide pthread.h and link against the posix thread library
618 * of your system.
619 */
620 #include <pthread.h>
621 #define ECB_NEEDS_PTHREADS 1
622 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
623
624 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
625 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
626 #endif
627#endif
628
629#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE)
630 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
631#endif
632
633#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE)
634 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
635#endif
636
637/*****************************************************************************/
638
639#define ECB_C99 (__STDC_VERSION__ >= 199901L)
640
641#if __cplusplus
642 #define ecb_inline static inline
643#elif ECB_GCC_VERSION(2,5)
644 #define ecb_inline static __inline__
645#elif ECB_C99
646 #define ecb_inline static inline
647#else
648 #define ecb_inline static
649#endif
650
651#if ECB_GCC_VERSION(3,3)
652 #define ecb_restrict __restrict__
653#elif ECB_C99
654 #define ecb_restrict restrict
655#else
656 #define ecb_restrict
657#endif
658
659typedef int ecb_bool;
660
661#define ECB_CONCAT_(a, b) a ## b
662#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
663#define ECB_STRINGIFY_(a) # a
664#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
665
666#define ecb_function_ ecb_inline
667
668#if ECB_GCC_VERSION(3,1)
669 #define ecb_attribute(attrlist) __attribute__(attrlist)
670 #define ecb_is_constant(expr) __builtin_constant_p (expr)
671 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
672 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
673#else
674 #define ecb_attribute(attrlist)
675 #define ecb_is_constant(expr) 0
676 #define ecb_expect(expr,value) (expr)
677 #define ecb_prefetch(addr,rw,locality)
678#endif
679
680/* no emulation for ecb_decltype */
681#if ECB_GCC_VERSION(4,5)
682 #define ecb_decltype(x) __decltype(x)
683#elif ECB_GCC_VERSION(3,0)
684 #define ecb_decltype(x) __typeof(x)
685#endif
686
687#define ecb_noinline ecb_attribute ((__noinline__))
688#define ecb_noreturn ecb_attribute ((__noreturn__))
689#define ecb_unused ecb_attribute ((__unused__))
690#define ecb_const ecb_attribute ((__const__))
691#define ecb_pure ecb_attribute ((__pure__))
692
693#if ECB_GCC_VERSION(4,3)
694 #define ecb_artificial ecb_attribute ((__artificial__))
695 #define ecb_hot ecb_attribute ((__hot__))
696 #define ecb_cold ecb_attribute ((__cold__))
697#else
698 #define ecb_artificial
699 #define ecb_hot
700 #define ecb_cold
701#endif
702
703/* put around conditional expressions if you are very sure that the */
704/* expression is mostly true or mostly false. note that these return */
705/* booleans, not the expression. */
379#define expect_false(expr) expect ((expr) != 0, 0) 706#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
380#define expect_true(expr) expect ((expr) != 0, 1) 707#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
708/* for compatibility to the rest of the world */
709#define ecb_likely(expr) ecb_expect_true (expr)
710#define ecb_unlikely(expr) ecb_expect_false (expr)
711
712/* count trailing zero bits and count # of one bits */
713#if ECB_GCC_VERSION(3,4)
714 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
715 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
716 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
717 #define ecb_ctz32(x) __builtin_ctz (x)
718 #define ecb_ctz64(x) __builtin_ctzll (x)
719 #define ecb_popcount32(x) __builtin_popcount (x)
720 /* no popcountll */
721#else
722 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
723 ecb_function_ int
724 ecb_ctz32 (uint32_t x)
725 {
726 int r = 0;
727
728 x &= ~x + 1; /* this isolates the lowest bit */
729
730#if ECB_branchless_on_i386
731 r += !!(x & 0xaaaaaaaa) << 0;
732 r += !!(x & 0xcccccccc) << 1;
733 r += !!(x & 0xf0f0f0f0) << 2;
734 r += !!(x & 0xff00ff00) << 3;
735 r += !!(x & 0xffff0000) << 4;
736#else
737 if (x & 0xaaaaaaaa) r += 1;
738 if (x & 0xcccccccc) r += 2;
739 if (x & 0xf0f0f0f0) r += 4;
740 if (x & 0xff00ff00) r += 8;
741 if (x & 0xffff0000) r += 16;
742#endif
743
744 return r;
745 }
746
747 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
748 ecb_function_ int
749 ecb_ctz64 (uint64_t x)
750 {
751 int shift = x & 0xffffffffU ? 0 : 32;
752 return ecb_ctz32 (x >> shift) + shift;
753 }
754
755 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
756 ecb_function_ int
757 ecb_popcount32 (uint32_t x)
758 {
759 x -= (x >> 1) & 0x55555555;
760 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
761 x = ((x >> 4) + x) & 0x0f0f0f0f;
762 x *= 0x01010101;
763
764 return x >> 24;
765 }
766
767 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
768 ecb_function_ int ecb_ld32 (uint32_t x)
769 {
770 int r = 0;
771
772 if (x >> 16) { x >>= 16; r += 16; }
773 if (x >> 8) { x >>= 8; r += 8; }
774 if (x >> 4) { x >>= 4; r += 4; }
775 if (x >> 2) { x >>= 2; r += 2; }
776 if (x >> 1) { r += 1; }
777
778 return r;
779 }
780
781 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
782 ecb_function_ int ecb_ld64 (uint64_t x)
783 {
784 int r = 0;
785
786 if (x >> 32) { x >>= 32; r += 32; }
787
788 return r + ecb_ld32 (x);
789 }
790#endif
791
792ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
793ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
794{
795 return ( (x * 0x0802U & 0x22110U)
796 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
797}
798
799ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
800ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
801{
802 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
803 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
804 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
805 x = ( x >> 8 ) | ( x << 8);
806
807 return x;
808}
809
810ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
811ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
812{
813 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
814 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
815 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
816 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
817 x = ( x >> 16 ) | ( x << 16);
818
819 return x;
820}
821
822/* popcount64 is only available on 64 bit cpus as gcc builtin */
823/* so for this version we are lazy */
824ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
825ecb_function_ int
826ecb_popcount64 (uint64_t x)
827{
828 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
829}
830
831ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
832ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
833ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
834ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
835ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
836ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
837ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
838ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
839
840ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
841ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
842ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
843ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
844ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
845ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
846ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
847ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
848
849#if ECB_GCC_VERSION(4,3)
850 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
851 #define ecb_bswap32(x) __builtin_bswap32 (x)
852 #define ecb_bswap64(x) __builtin_bswap64 (x)
853#else
854 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
855 ecb_function_ uint16_t
856 ecb_bswap16 (uint16_t x)
857 {
858 return ecb_rotl16 (x, 8);
859 }
860
861 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
862 ecb_function_ uint32_t
863 ecb_bswap32 (uint32_t x)
864 {
865 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
866 }
867
868 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
869 ecb_function_ uint64_t
870 ecb_bswap64 (uint64_t x)
871 {
872 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
873 }
874#endif
875
876#if ECB_GCC_VERSION(4,5)
877 #define ecb_unreachable() __builtin_unreachable ()
878#else
879 /* this seems to work fine, but gcc always emits a warning for it :/ */
880 ecb_inline void ecb_unreachable (void) ecb_noreturn;
881 ecb_inline void ecb_unreachable (void) { }
882#endif
883
884/* try to tell the compiler that some condition is definitely true */
885#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
886
887ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
888ecb_inline unsigned char
889ecb_byteorder_helper (void)
890{
891 const uint32_t u = 0x11223344;
892 return *(unsigned char *)&u;
893}
894
895ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
896ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
897ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
898ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
899
900#if ECB_GCC_VERSION(3,0) || ECB_C99
901 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
902#else
903 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
904#endif
905
906#if __cplusplus
907 template<typename T>
908 static inline T ecb_div_rd (T val, T div)
909 {
910 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
911 }
912 template<typename T>
913 static inline T ecb_div_ru (T val, T div)
914 {
915 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
916 }
917#else
918 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
919 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
920#endif
921
922#if ecb_cplusplus_does_not_suck
923 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
924 template<typename T, int N>
925 static inline int ecb_array_length (const T (&arr)[N])
926 {
927 return N;
928 }
929#else
930 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
931#endif
932
933#endif
934
935/* ECB.H END */
936
937#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
938/* if your architecture doesn't need memory fences, e.g. because it is
939 * single-cpu/core, or if you use libev in a project that doesn't use libev
940 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
941 * libev, in which cases the memory fences become nops.
942 * alternatively, you can remove this #error and link against libpthread,
943 * which will then provide the memory fences.
944 */
945# error "memory fences not defined for your architecture, please report"
946#endif
947
948#ifndef ECB_MEMORY_FENCE
949# define ECB_MEMORY_FENCE do { } while (0)
950# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
951# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
952#endif
953
954#define expect_false(cond) ecb_expect_false (cond)
955#define expect_true(cond) ecb_expect_true (cond)
956#define noinline ecb_noinline
957
381#define inline_size static inline 958#define inline_size ecb_inline
382 959
383#if EV_MINIMAL 960#if EV_FEATURE_CODE
961# define inline_speed ecb_inline
962#else
384# define inline_speed static noinline 963# define inline_speed static noinline
964#endif
965
966#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
967
968#if EV_MINPRI == EV_MAXPRI
969# define ABSPRI(w) (((W)w), 0)
385#else 970#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) 971# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
972#endif
391 973
392#define EMPTY /* required for microsofts broken pseudo-c compiler */ 974#define EMPTY /* required for microsofts broken pseudo-c compiler */
393#define EMPTY2(a,b) /* used to suppress some warnings */ 975#define EMPTY2(a,b) /* used to suppress some warnings */
394 976
395typedef ev_watcher *W; 977typedef ev_watcher *W;
… …
399#define ev_active(w) ((W)(w))->active 981#define ev_active(w) ((W)(w))->active
400#define ev_at(w) ((WT)(w))->at 982#define ev_at(w) ((WT)(w))->at
401 983
402#if EV_USE_REALTIME 984#if EV_USE_REALTIME
403/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 985/* 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 */ 986/* giving it a reasonably high chance of working on typical architectures */
405static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 987static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
406#endif 988#endif
407 989
408#if EV_USE_MONOTONIC 990#if EV_USE_MONOTONIC
409static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 991static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
410#endif 992#endif
411 993
994#ifndef EV_FD_TO_WIN32_HANDLE
995# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
996#endif
997#ifndef EV_WIN32_HANDLE_TO_FD
998# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
999#endif
1000#ifndef EV_WIN32_CLOSE_FD
1001# define EV_WIN32_CLOSE_FD(fd) close (fd)
1002#endif
1003
412#ifdef _WIN32 1004#ifdef _WIN32
413# include "ev_win32.c" 1005# include "ev_win32.c"
414#endif 1006#endif
415 1007
416/*****************************************************************************/ 1008/*****************************************************************************/
417 1009
1010/* define a suitable floor function (only used by periodics atm) */
1011
1012#if EV_USE_FLOOR
1013# include <math.h>
1014# define ev_floor(v) floor (v)
1015#else
1016
1017#include <float.h>
1018
1019/* a floor() replacement function, should be independent of ev_tstamp type */
1020static ev_tstamp noinline
1021ev_floor (ev_tstamp v)
1022{
1023 /* the choice of shift factor is not terribly important */
1024#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1025 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1026#else
1027 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1028#endif
1029
1030 /* argument too large for an unsigned long? */
1031 if (expect_false (v >= shift))
1032 {
1033 ev_tstamp f;
1034
1035 if (v == v - 1.)
1036 return v; /* very large number */
1037
1038 f = shift * ev_floor (v * (1. / shift));
1039 return f + ev_floor (v - f);
1040 }
1041
1042 /* special treatment for negative args? */
1043 if (expect_false (v < 0.))
1044 {
1045 ev_tstamp f = -ev_floor (-v);
1046
1047 return f - (f == v ? 0 : 1);
1048 }
1049
1050 /* fits into an unsigned long */
1051 return (unsigned long)v;
1052}
1053
1054#endif
1055
1056/*****************************************************************************/
1057
1058#ifdef __linux
1059# include <sys/utsname.h>
1060#endif
1061
1062static unsigned int noinline ecb_cold
1063ev_linux_version (void)
1064{
1065#ifdef __linux
1066 unsigned int v = 0;
1067 struct utsname buf;
1068 int i;
1069 char *p = buf.release;
1070
1071 if (uname (&buf))
1072 return 0;
1073
1074 for (i = 3+1; --i; )
1075 {
1076 unsigned int c = 0;
1077
1078 for (;;)
1079 {
1080 if (*p >= '0' && *p <= '9')
1081 c = c * 10 + *p++ - '0';
1082 else
1083 {
1084 p += *p == '.';
1085 break;
1086 }
1087 }
1088
1089 v = (v << 8) | c;
1090 }
1091
1092 return v;
1093#else
1094 return 0;
1095#endif
1096}
1097
1098/*****************************************************************************/
1099
1100#if EV_AVOID_STDIO
1101static void noinline ecb_cold
1102ev_printerr (const char *msg)
1103{
1104 write (STDERR_FILENO, msg, strlen (msg));
1105}
1106#endif
1107
418static void (*syserr_cb)(const char *msg); 1108static void (*syserr_cb)(const char *msg);
419 1109
420void 1110void ecb_cold
421ev_set_syserr_cb (void (*cb)(const char *msg)) 1111ev_set_syserr_cb (void (*cb)(const char *msg))
422{ 1112{
423 syserr_cb = cb; 1113 syserr_cb = cb;
424} 1114}
425 1115
426static void noinline 1116static void noinline ecb_cold
427ev_syserr (const char *msg) 1117ev_syserr (const char *msg)
428{ 1118{
429 if (!msg) 1119 if (!msg)
430 msg = "(libev) system error"; 1120 msg = "(libev) system error";
431 1121
432 if (syserr_cb) 1122 if (syserr_cb)
433 syserr_cb (msg); 1123 syserr_cb (msg);
434 else 1124 else
435 { 1125 {
1126#if EV_AVOID_STDIO
1127 ev_printerr (msg);
1128 ev_printerr (": ");
1129 ev_printerr (strerror (errno));
1130 ev_printerr ("\n");
1131#else
436 perror (msg); 1132 perror (msg);
1133#endif
437 abort (); 1134 abort ();
438 } 1135 }
439} 1136}
440 1137
441static void * 1138static void *
442ev_realloc_emul (void *ptr, long size) 1139ev_realloc_emul (void *ptr, long size)
443{ 1140{
1141#if __GLIBC__
1142 return realloc (ptr, size);
1143#else
444 /* some systems, notably openbsd and darwin, fail to properly 1144 /* some systems, notably openbsd and darwin, fail to properly
445 * implement realloc (x, 0) (as required by both ansi c-98 and 1145 * implement realloc (x, 0) (as required by both ansi c-89 and
446 * the single unix specification, so work around them here. 1146 * the single unix specification, so work around them here.
447 */ 1147 */
448 1148
449 if (size) 1149 if (size)
450 return realloc (ptr, size); 1150 return realloc (ptr, size);
451 1151
452 free (ptr); 1152 free (ptr);
453 return 0; 1153 return 0;
1154#endif
454} 1155}
455 1156
456static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1157static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
457 1158
458void 1159void ecb_cold
459ev_set_allocator (void *(*cb)(void *ptr, long size)) 1160ev_set_allocator (void *(*cb)(void *ptr, long size))
460{ 1161{
461 alloc = cb; 1162 alloc = cb;
462} 1163}
463 1164
… …
466{ 1167{
467 ptr = alloc (ptr, size); 1168 ptr = alloc (ptr, size);
468 1169
469 if (!ptr && size) 1170 if (!ptr && size)
470 { 1171 {
1172#if EV_AVOID_STDIO
1173 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1174#else
471 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1175 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1176#endif
472 abort (); 1177 abort ();
473 } 1178 }
474 1179
475 return ptr; 1180 return ptr;
476} 1181}
… …
478#define ev_malloc(size) ev_realloc (0, (size)) 1183#define ev_malloc(size) ev_realloc (0, (size))
479#define ev_free(ptr) ev_realloc ((ptr), 0) 1184#define ev_free(ptr) ev_realloc ((ptr), 0)
480 1185
481/*****************************************************************************/ 1186/*****************************************************************************/
482 1187
1188/* set in reify when reification needed */
1189#define EV_ANFD_REIFY 1
1190
483/* file descriptor info structure */ 1191/* file descriptor info structure */
484typedef struct 1192typedef struct
485{ 1193{
486 WL head; 1194 WL head;
487 unsigned char events; /* the events watched for */ 1195 unsigned char events; /* the events watched for */
488 unsigned char reify; /* flag set when this ANFD needs reification */ 1196 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 */ 1197 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
490 unsigned char unused; 1198 unsigned char unused;
491#if EV_USE_EPOLL 1199#if EV_USE_EPOLL
492 unsigned int egen; /* generation counter to counter epoll bugs */ 1200 unsigned int egen; /* generation counter to counter epoll bugs */
493#endif 1201#endif
494#if EV_SELECT_IS_WINSOCKET 1202#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
495 SOCKET handle; 1203 SOCKET handle;
1204#endif
1205#if EV_USE_IOCP
1206 OVERLAPPED or, ow;
496#endif 1207#endif
497} ANFD; 1208} ANFD;
498 1209
499/* stores the pending event set for a given watcher */ 1210/* stores the pending event set for a given watcher */
500typedef struct 1211typedef struct
… …
542 #undef VAR 1253 #undef VAR
543 }; 1254 };
544 #include "ev_wrap.h" 1255 #include "ev_wrap.h"
545 1256
546 static struct ev_loop default_loop_struct; 1257 static struct ev_loop default_loop_struct;
547 struct ev_loop *ev_default_loop_ptr; 1258 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
548 1259
549#else 1260#else
550 1261
551 ev_tstamp ev_rt_now; 1262 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; 1263 #define VAR(name,decl) static decl;
553 #include "ev_vars.h" 1264 #include "ev_vars.h"
554 #undef VAR 1265 #undef VAR
555 1266
556 static int ev_default_loop_ptr; 1267 static int ev_default_loop_ptr;
557 1268
558#endif 1269#endif
559 1270
1271#if EV_FEATURE_API
1272# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
1273# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
1274# define EV_INVOKE_PENDING invoke_cb (EV_A)
1275#else
1276# define EV_RELEASE_CB (void)0
1277# define EV_ACQUIRE_CB (void)0
1278# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
1279#endif
1280
1281#define EVBREAK_RECURSE 0x80
1282
560/*****************************************************************************/ 1283/*****************************************************************************/
561 1284
1285#ifndef EV_HAVE_EV_TIME
562ev_tstamp 1286ev_tstamp
563ev_time (void) 1287ev_time (void)
564{ 1288{
565#if EV_USE_REALTIME 1289#if EV_USE_REALTIME
566 if (expect_true (have_realtime)) 1290 if (expect_true (have_realtime))
… …
573 1297
574 struct timeval tv; 1298 struct timeval tv;
575 gettimeofday (&tv, 0); 1299 gettimeofday (&tv, 0);
576 return tv.tv_sec + tv.tv_usec * 1e-6; 1300 return tv.tv_sec + tv.tv_usec * 1e-6;
577} 1301}
1302#endif
578 1303
579inline_size ev_tstamp 1304inline_size ev_tstamp
580get_clock (void) 1305get_clock (void)
581{ 1306{
582#if EV_USE_MONOTONIC 1307#if EV_USE_MONOTONIC
… …
605 if (delay > 0.) 1330 if (delay > 0.)
606 { 1331 {
607#if EV_USE_NANOSLEEP 1332#if EV_USE_NANOSLEEP
608 struct timespec ts; 1333 struct timespec ts;
609 1334
610 ts.tv_sec = (time_t)delay; 1335 EV_TS_SET (ts, delay);
611 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
612
613 nanosleep (&ts, 0); 1336 nanosleep (&ts, 0);
614#elif defined(_WIN32) 1337#elif defined _WIN32
615 Sleep ((unsigned long)(delay * 1e3)); 1338 Sleep ((unsigned long)(delay * 1e3));
616#else 1339#else
617 struct timeval tv; 1340 struct timeval tv;
618 1341
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 */ 1342 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
623 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 1343 /* something not guaranteed by newer posix versions, but guaranteed */
624 /* by older ones */ 1344 /* by older ones */
1345 EV_TV_SET (tv, delay);
625 select (0, 0, 0, 0, &tv); 1346 select (0, 0, 0, 0, &tv);
626#endif 1347#endif
627 } 1348 }
628} 1349}
629 1350
630/*****************************************************************************/ 1351/*****************************************************************************/
631 1352
632#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1353#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
633 1354
634/* find a suitable new size for the given array, */ 1355/* find a suitable new size for the given array, */
635/* hopefully by rounding to a ncie-to-malloc size */ 1356/* hopefully by rounding to a nice-to-malloc size */
636inline_size int 1357inline_size int
637array_nextsize (int elem, int cur, int cnt) 1358array_nextsize (int elem, int cur, int cnt)
638{ 1359{
639 int ncur = cur + 1; 1360 int ncur = cur + 1;
640 1361
641 do 1362 do
642 ncur <<= 1; 1363 ncur <<= 1;
643 while (cnt > ncur); 1364 while (cnt > ncur);
644 1365
645 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1366 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
646 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1367 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
647 { 1368 {
648 ncur *= elem; 1369 ncur *= elem;
649 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1370 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
650 ncur = ncur - sizeof (void *) * 4; 1371 ncur = ncur - sizeof (void *) * 4;
… …
652 } 1373 }
653 1374
654 return ncur; 1375 return ncur;
655} 1376}
656 1377
657static noinline void * 1378static void * noinline ecb_cold
658array_realloc (int elem, void *base, int *cur, int cnt) 1379array_realloc (int elem, void *base, int *cur, int cnt)
659{ 1380{
660 *cur = array_nextsize (elem, *cur, cnt); 1381 *cur = array_nextsize (elem, *cur, cnt);
661 return ev_realloc (base, elem * *cur); 1382 return ev_realloc (base, elem * *cur);
662} 1383}
… …
665 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1386 memset ((void *)(base), 0, sizeof (*(base)) * (count))
666 1387
667#define array_needsize(type,base,cur,cnt,init) \ 1388#define array_needsize(type,base,cur,cnt,init) \
668 if (expect_false ((cnt) > (cur))) \ 1389 if (expect_false ((cnt) > (cur))) \
669 { \ 1390 { \
670 int ocur_ = (cur); \ 1391 int ecb_unused ocur_ = (cur); \
671 (base) = (type *)array_realloc \ 1392 (base) = (type *)array_realloc \
672 (sizeof (type), (base), &(cur), (cnt)); \ 1393 (sizeof (type), (base), &(cur), (cnt)); \
673 init ((base) + (ocur_), (cur) - ocur_); \ 1394 init ((base) + (ocur_), (cur) - ocur_); \
674 } 1395 }
675 1396
… …
736} 1457}
737 1458
738/*****************************************************************************/ 1459/*****************************************************************************/
739 1460
740inline_speed void 1461inline_speed void
741fd_event (EV_P_ int fd, int revents) 1462fd_event_nocheck (EV_P_ int fd, int revents)
742{ 1463{
743 ANFD *anfd = anfds + fd; 1464 ANFD *anfd = anfds + fd;
744 ev_io *w; 1465 ev_io *w;
745 1466
746 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1467 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
750 if (ev) 1471 if (ev)
751 ev_feed_event (EV_A_ (W)w, ev); 1472 ev_feed_event (EV_A_ (W)w, ev);
752 } 1473 }
753} 1474}
754 1475
1476/* do not submit kernel events for fds that have reify set */
1477/* because that means they changed while we were polling for new events */
1478inline_speed void
1479fd_event (EV_P_ int fd, int revents)
1480{
1481 ANFD *anfd = anfds + fd;
1482
1483 if (expect_true (!anfd->reify))
1484 fd_event_nocheck (EV_A_ fd, revents);
1485}
1486
755void 1487void
756ev_feed_fd_event (EV_P_ int fd, int revents) 1488ev_feed_fd_event (EV_P_ int fd, int revents)
757{ 1489{
758 if (fd >= 0 && fd < anfdmax) 1490 if (fd >= 0 && fd < anfdmax)
759 fd_event (EV_A_ fd, revents); 1491 fd_event_nocheck (EV_A_ fd, revents);
760} 1492}
761 1493
762/* make sure the external fd watch events are in-sync */ 1494/* make sure the external fd watch events are in-sync */
763/* with the kernel/libev internal state */ 1495/* with the kernel/libev internal state */
764inline_size void 1496inline_size void
765fd_reify (EV_P) 1497fd_reify (EV_P)
766{ 1498{
767 int i; 1499 int i;
768 1500
1501#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1502 for (i = 0; i < fdchangecnt; ++i)
1503 {
1504 int fd = fdchanges [i];
1505 ANFD *anfd = anfds + fd;
1506
1507 if (anfd->reify & EV__IOFDSET && anfd->head)
1508 {
1509 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1510
1511 if (handle != anfd->handle)
1512 {
1513 unsigned long arg;
1514
1515 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1516
1517 /* handle changed, but fd didn't - we need to do it in two steps */
1518 backend_modify (EV_A_ fd, anfd->events, 0);
1519 anfd->events = 0;
1520 anfd->handle = handle;
1521 }
1522 }
1523 }
1524#endif
1525
769 for (i = 0; i < fdchangecnt; ++i) 1526 for (i = 0; i < fdchangecnt; ++i)
770 { 1527 {
771 int fd = fdchanges [i]; 1528 int fd = fdchanges [i];
772 ANFD *anfd = anfds + fd; 1529 ANFD *anfd = anfds + fd;
773 ev_io *w; 1530 ev_io *w;
774 1531
775 unsigned char events = 0; 1532 unsigned char o_events = anfd->events;
1533 unsigned char o_reify = anfd->reify;
776 1534
777 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1535 anfd->reify = 0;
778 events |= (unsigned char)w->events;
779 1536
780#if EV_SELECT_IS_WINSOCKET 1537 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
781 if (events)
782 { 1538 {
783 unsigned long arg; 1539 anfd->events = 0;
784 #ifdef EV_FD_TO_WIN32_HANDLE 1540
785 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1541 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
786 #else 1542 anfd->events |= (unsigned char)w->events;
787 anfd->handle = _get_osfhandle (fd); 1543
788 #endif 1544 if (o_events != anfd->events)
789 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1545 o_reify = EV__IOFDSET; /* actually |= */
790 } 1546 }
791#endif
792 1547
793 { 1548 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); 1549 backend_modify (EV_A_ fd, o_events, anfd->events);
802 }
803 } 1550 }
804 1551
805 fdchangecnt = 0; 1552 fdchangecnt = 0;
806} 1553}
807 1554
… …
819 fdchanges [fdchangecnt - 1] = fd; 1566 fdchanges [fdchangecnt - 1] = fd;
820 } 1567 }
821} 1568}
822 1569
823/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1570/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
824inline_speed void 1571inline_speed void ecb_cold
825fd_kill (EV_P_ int fd) 1572fd_kill (EV_P_ int fd)
826{ 1573{
827 ev_io *w; 1574 ev_io *w;
828 1575
829 while ((w = (ev_io *)anfds [fd].head)) 1576 while ((w = (ev_io *)anfds [fd].head))
… …
831 ev_io_stop (EV_A_ w); 1578 ev_io_stop (EV_A_ w);
832 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1579 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
833 } 1580 }
834} 1581}
835 1582
836/* check whether the given fd is atcually valid, for error recovery */ 1583/* check whether the given fd is actually valid, for error recovery */
837inline_size int 1584inline_size int ecb_cold
838fd_valid (int fd) 1585fd_valid (int fd)
839{ 1586{
840#ifdef _WIN32 1587#ifdef _WIN32
841 return _get_osfhandle (fd) != -1; 1588 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
842#else 1589#else
843 return fcntl (fd, F_GETFD) != -1; 1590 return fcntl (fd, F_GETFD) != -1;
844#endif 1591#endif
845} 1592}
846 1593
847/* called on EBADF to verify fds */ 1594/* called on EBADF to verify fds */
848static void noinline 1595static void noinline ecb_cold
849fd_ebadf (EV_P) 1596fd_ebadf (EV_P)
850{ 1597{
851 int fd; 1598 int fd;
852 1599
853 for (fd = 0; fd < anfdmax; ++fd) 1600 for (fd = 0; fd < anfdmax; ++fd)
… …
855 if (!fd_valid (fd) && errno == EBADF) 1602 if (!fd_valid (fd) && errno == EBADF)
856 fd_kill (EV_A_ fd); 1603 fd_kill (EV_A_ fd);
857} 1604}
858 1605
859/* called on ENOMEM in select/poll to kill some fds and retry */ 1606/* called on ENOMEM in select/poll to kill some fds and retry */
860static void noinline 1607static void noinline ecb_cold
861fd_enomem (EV_P) 1608fd_enomem (EV_P)
862{ 1609{
863 int fd; 1610 int fd;
864 1611
865 for (fd = anfdmax; fd--; ) 1612 for (fd = anfdmax; fd--; )
866 if (anfds [fd].events) 1613 if (anfds [fd].events)
867 { 1614 {
868 fd_kill (EV_A_ fd); 1615 fd_kill (EV_A_ fd);
869 return; 1616 break;
870 } 1617 }
871} 1618}
872 1619
873/* usually called after fork if backend needs to re-arm all fds from scratch */ 1620/* usually called after fork if backend needs to re-arm all fds from scratch */
874static void noinline 1621static void noinline
… …
879 for (fd = 0; fd < anfdmax; ++fd) 1626 for (fd = 0; fd < anfdmax; ++fd)
880 if (anfds [fd].events) 1627 if (anfds [fd].events)
881 { 1628 {
882 anfds [fd].events = 0; 1629 anfds [fd].events = 0;
883 anfds [fd].emask = 0; 1630 anfds [fd].emask = 0;
884 fd_change (EV_A_ fd, EV__IOFDSET | 1); 1631 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
885 } 1632 }
886} 1633}
887 1634
1635/* used to prepare libev internal fd's */
1636/* this is not fork-safe */
1637inline_speed void
1638fd_intern (int fd)
1639{
1640#ifdef _WIN32
1641 unsigned long arg = 1;
1642 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1643#else
1644 fcntl (fd, F_SETFD, FD_CLOEXEC);
1645 fcntl (fd, F_SETFL, O_NONBLOCK);
1646#endif
1647}
1648
888/*****************************************************************************/ 1649/*****************************************************************************/
889 1650
890/* 1651/*
891 * the heap functions want a real array index. array index 0 uis guaranteed to not 1652 * 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 1653 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
893 * the branching factor of the d-tree. 1654 * the branching factor of the d-tree.
894 */ 1655 */
895 1656
896/* 1657/*
… …
964 1725
965 for (;;) 1726 for (;;)
966 { 1727 {
967 int c = k << 1; 1728 int c = k << 1;
968 1729
969 if (c > N + HEAP0 - 1) 1730 if (c >= N + HEAP0)
970 break; 1731 break;
971 1732
972 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1733 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
973 ? 1 : 0; 1734 ? 1 : 0;
974 1735
… …
1010 1771
1011/* move an element suitably so it is in a correct place */ 1772/* move an element suitably so it is in a correct place */
1012inline_size void 1773inline_size void
1013adjustheap (ANHE *heap, int N, int k) 1774adjustheap (ANHE *heap, int N, int k)
1014{ 1775{
1015 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1776 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1016 upheap (heap, k); 1777 upheap (heap, k);
1017 else 1778 else
1018 downheap (heap, N, k); 1779 downheap (heap, N, k);
1019} 1780}
1020 1781
… …
1033/*****************************************************************************/ 1794/*****************************************************************************/
1034 1795
1035/* associate signal watchers to a signal signal */ 1796/* associate signal watchers to a signal signal */
1036typedef struct 1797typedef struct
1037{ 1798{
1799 EV_ATOMIC_T pending;
1800#if EV_MULTIPLICITY
1801 EV_P;
1802#endif
1038 WL head; 1803 WL head;
1039 EV_ATOMIC_T gotsig;
1040} ANSIG; 1804} ANSIG;
1041 1805
1042static ANSIG *signals; 1806static ANSIG signals [EV_NSIG - 1];
1043static int signalmax;
1044
1045static EV_ATOMIC_T gotsig;
1046 1807
1047/*****************************************************************************/ 1808/*****************************************************************************/
1048 1809
1049/* used to prepare libev internal fd's */ 1810#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 1811
1063static void noinline 1812static void noinline ecb_cold
1064evpipe_init (EV_P) 1813evpipe_init (EV_P)
1065{ 1814{
1066 if (!ev_is_active (&pipe_w)) 1815 if (!ev_is_active (&pipe_w))
1067 { 1816 {
1068#if EV_USE_EVENTFD 1817# if EV_USE_EVENTFD
1818 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1819 if (evfd < 0 && errno == EINVAL)
1069 if ((evfd = eventfd (0, 0)) >= 0) 1820 evfd = eventfd (0, 0);
1821
1822 if (evfd >= 0)
1070 { 1823 {
1071 evpipe [0] = -1; 1824 evpipe [0] = -1;
1072 fd_intern (evfd); 1825 fd_intern (evfd); /* doing it twice doesn't hurt */
1073 ev_io_set (&pipe_w, evfd, EV_READ); 1826 ev_io_set (&pipe_w, evfd, EV_READ);
1074 } 1827 }
1075 else 1828 else
1076#endif 1829# endif
1077 { 1830 {
1078 while (pipe (evpipe)) 1831 while (pipe (evpipe))
1079 ev_syserr ("(libev) error creating signal/async pipe"); 1832 ev_syserr ("(libev) error creating signal/async pipe");
1080 1833
1081 fd_intern (evpipe [0]); 1834 fd_intern (evpipe [0]);
… …
1086 ev_io_start (EV_A_ &pipe_w); 1839 ev_io_start (EV_A_ &pipe_w);
1087 ev_unref (EV_A); /* watcher should not keep loop alive */ 1840 ev_unref (EV_A); /* watcher should not keep loop alive */
1088 } 1841 }
1089} 1842}
1090 1843
1091inline_size void 1844inline_speed void
1092evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1845evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1093{ 1846{
1094 if (!*flag) 1847 if (expect_true (*flag))
1848 return;
1849
1850 *flag = 1;
1851
1852 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1853
1854 pipe_write_skipped = 1;
1855
1856 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1857
1858 if (pipe_write_wanted)
1095 { 1859 {
1860 int old_errno;
1861
1862 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1863
1096 int old_errno = errno; /* save errno because write might clobber it */ 1864 old_errno = errno; /* save errno because write will clobber it */
1097
1098 *flag = 1;
1099 1865
1100#if EV_USE_EVENTFD 1866#if EV_USE_EVENTFD
1101 if (evfd >= 0) 1867 if (evfd >= 0)
1102 { 1868 {
1103 uint64_t counter = 1; 1869 uint64_t counter = 1;
1104 write (evfd, &counter, sizeof (uint64_t)); 1870 write (evfd, &counter, sizeof (uint64_t));
1105 } 1871 }
1106 else 1872 else
1107#endif 1873#endif
1874 {
1875 /* win32 people keep sending patches that change this write() to send() */
1876 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1877 /* so when you think this write should be a send instead, please find out */
1878 /* where your send() is from - it's definitely not the microsoft send, and */
1879 /* tell me. thank you. */
1880 /* it might be that your problem is that your environment needs EV_USE_WSASOCKET */
1881 /* check the ev documentation on how to use this flag */
1108 write (evpipe [1], &old_errno, 1); 1882 write (evpipe [1], &(evpipe [1]), 1);
1883 }
1109 1884
1110 errno = old_errno; 1885 errno = old_errno;
1111 } 1886 }
1112} 1887}
1113 1888
1114/* called whenever the libev signal pipe */ 1889/* called whenever the libev signal pipe */
1115/* got some events (signal, async) */ 1890/* got some events (signal, async) */
1116static void 1891static void
1117pipecb (EV_P_ ev_io *iow, int revents) 1892pipecb (EV_P_ ev_io *iow, int revents)
1118{ 1893{
1894 int i;
1895
1896 if (revents & EV_READ)
1897 {
1119#if EV_USE_EVENTFD 1898#if EV_USE_EVENTFD
1120 if (evfd >= 0) 1899 if (evfd >= 0)
1121 { 1900 {
1122 uint64_t counter; 1901 uint64_t counter;
1123 read (evfd, &counter, sizeof (uint64_t)); 1902 read (evfd, &counter, sizeof (uint64_t));
1124 } 1903 }
1125 else 1904 else
1126#endif 1905#endif
1127 { 1906 {
1128 char dummy; 1907 char dummy;
1908 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1129 read (evpipe [0], &dummy, 1); 1909 read (evpipe [0], &dummy, 1);
1910 }
1911 }
1912
1913 pipe_write_skipped = 0;
1914
1915#if EV_SIGNAL_ENABLE
1916 if (sig_pending)
1130 } 1917 {
1918 sig_pending = 0;
1131 1919
1132 if (gotsig && ev_is_default_loop (EV_A)) 1920 for (i = EV_NSIG - 1; i--; )
1133 { 1921 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); 1922 ev_feed_signal_event (EV_A_ i + 1);
1140 } 1923 }
1924#endif
1141 1925
1142#if EV_ASYNC_ENABLE 1926#if EV_ASYNC_ENABLE
1143 if (gotasync) 1927 if (async_pending)
1144 { 1928 {
1145 int i; 1929 async_pending = 0;
1146 gotasync = 0;
1147 1930
1148 for (i = asynccnt; i--; ) 1931 for (i = asynccnt; i--; )
1149 if (asyncs [i]->sent) 1932 if (asyncs [i]->sent)
1150 { 1933 {
1151 asyncs [i]->sent = 0; 1934 asyncs [i]->sent = 0;
… …
1155#endif 1938#endif
1156} 1939}
1157 1940
1158/*****************************************************************************/ 1941/*****************************************************************************/
1159 1942
1943void
1944ev_feed_signal (int signum)
1945{
1946#if EV_MULTIPLICITY
1947 EV_P = signals [signum - 1].loop;
1948
1949 if (!EV_A)
1950 return;
1951#endif
1952
1953 if (!ev_active (&pipe_w))
1954 return;
1955
1956 signals [signum - 1].pending = 1;
1957 evpipe_write (EV_A_ &sig_pending);
1958}
1959
1160static void 1960static void
1161ev_sighandler (int signum) 1961ev_sighandler (int signum)
1162{ 1962{
1163#if EV_MULTIPLICITY
1164 struct ev_loop *loop = &default_loop_struct;
1165#endif
1166
1167#if _WIN32 1963#ifdef _WIN32
1168 signal (signum, ev_sighandler); 1964 signal (signum, ev_sighandler);
1169#endif 1965#endif
1170 1966
1171 signals [signum - 1].gotsig = 1; 1967 ev_feed_signal (signum);
1172 evpipe_write (EV_A_ &gotsig);
1173} 1968}
1174 1969
1175void noinline 1970void noinline
1176ev_feed_signal_event (EV_P_ int signum) 1971ev_feed_signal_event (EV_P_ int signum)
1177{ 1972{
1178 WL w; 1973 WL w;
1179 1974
1975 if (expect_false (signum <= 0 || signum > EV_NSIG))
1976 return;
1977
1978 --signum;
1979
1180#if EV_MULTIPLICITY 1980#if EV_MULTIPLICITY
1181 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1981 /* it is permissible to try to feed a signal to the wrong loop */
1182#endif 1982 /* or, likely more useful, feeding a signal nobody is waiting for */
1183 1983
1184 --signum; 1984 if (expect_false (signals [signum].loop != EV_A))
1185
1186 if (signum < 0 || signum >= signalmax)
1187 return; 1985 return;
1986#endif
1188 1987
1189 signals [signum].gotsig = 0; 1988 signals [signum].pending = 0;
1190 1989
1191 for (w = signals [signum].head; w; w = w->next) 1990 for (w = signals [signum].head; w; w = w->next)
1192 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1991 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1193} 1992}
1194 1993
1994#if EV_USE_SIGNALFD
1995static void
1996sigfdcb (EV_P_ ev_io *iow, int revents)
1997{
1998 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1999
2000 for (;;)
2001 {
2002 ssize_t res = read (sigfd, si, sizeof (si));
2003
2004 /* not ISO-C, as res might be -1, but works with SuS */
2005 for (sip = si; (char *)sip < (char *)si + res; ++sip)
2006 ev_feed_signal_event (EV_A_ sip->ssi_signo);
2007
2008 if (res < (ssize_t)sizeof (si))
2009 break;
2010 }
2011}
2012#endif
2013
2014#endif
2015
1195/*****************************************************************************/ 2016/*****************************************************************************/
1196 2017
2018#if EV_CHILD_ENABLE
1197static WL childs [EV_PID_HASHSIZE]; 2019static WL childs [EV_PID_HASHSIZE];
1198
1199#ifndef _WIN32
1200 2020
1201static ev_signal childev; 2021static ev_signal childev;
1202 2022
1203#ifndef WIFCONTINUED 2023#ifndef WIFCONTINUED
1204# define WIFCONTINUED(status) 0 2024# define WIFCONTINUED(status) 0
… …
1209child_reap (EV_P_ int chain, int pid, int status) 2029child_reap (EV_P_ int chain, int pid, int status)
1210{ 2030{
1211 ev_child *w; 2031 ev_child *w;
1212 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2032 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1213 2033
1214 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2034 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1215 { 2035 {
1216 if ((w->pid == pid || !w->pid) 2036 if ((w->pid == pid || !w->pid)
1217 && (!traced || (w->flags & 1))) 2037 && (!traced || (w->flags & 1)))
1218 { 2038 {
1219 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2039 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 */ 2064 /* 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 */ 2065 /* 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); 2066 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1247 2067
1248 child_reap (EV_A_ pid, pid, status); 2068 child_reap (EV_A_ pid, pid, status);
1249 if (EV_PID_HASHSIZE > 1) 2069 if ((EV_PID_HASHSIZE) > 1)
1250 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2070 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1251} 2071}
1252 2072
1253#endif 2073#endif
1254 2074
1255/*****************************************************************************/ 2075/*****************************************************************************/
1256 2076
2077#if EV_USE_IOCP
2078# include "ev_iocp.c"
2079#endif
1257#if EV_USE_PORT 2080#if EV_USE_PORT
1258# include "ev_port.c" 2081# include "ev_port.c"
1259#endif 2082#endif
1260#if EV_USE_KQUEUE 2083#if EV_USE_KQUEUE
1261# include "ev_kqueue.c" 2084# include "ev_kqueue.c"
… …
1268#endif 2091#endif
1269#if EV_USE_SELECT 2092#if EV_USE_SELECT
1270# include "ev_select.c" 2093# include "ev_select.c"
1271#endif 2094#endif
1272 2095
1273int 2096int ecb_cold
1274ev_version_major (void) 2097ev_version_major (void)
1275{ 2098{
1276 return EV_VERSION_MAJOR; 2099 return EV_VERSION_MAJOR;
1277} 2100}
1278 2101
1279int 2102int ecb_cold
1280ev_version_minor (void) 2103ev_version_minor (void)
1281{ 2104{
1282 return EV_VERSION_MINOR; 2105 return EV_VERSION_MINOR;
1283} 2106}
1284 2107
1285/* return true if we are running with elevated privileges and should ignore env variables */ 2108/* return true if we are running with elevated privileges and should ignore env variables */
1286int inline_size 2109int inline_size ecb_cold
1287enable_secure (void) 2110enable_secure (void)
1288{ 2111{
1289#ifdef _WIN32 2112#ifdef _WIN32
1290 return 0; 2113 return 0;
1291#else 2114#else
1292 return getuid () != geteuid () 2115 return getuid () != geteuid ()
1293 || getgid () != getegid (); 2116 || getgid () != getegid ();
1294#endif 2117#endif
1295} 2118}
1296 2119
1297unsigned int 2120unsigned int ecb_cold
1298ev_supported_backends (void) 2121ev_supported_backends (void)
1299{ 2122{
1300 unsigned int flags = 0; 2123 unsigned int flags = 0;
1301 2124
1302 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2125 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1306 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2129 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1307 2130
1308 return flags; 2131 return flags;
1309} 2132}
1310 2133
1311unsigned int 2134unsigned int ecb_cold
1312ev_recommended_backends (void) 2135ev_recommended_backends (void)
1313{ 2136{
1314 unsigned int flags = ev_supported_backends (); 2137 unsigned int flags = ev_supported_backends ();
1315 2138
1316#ifndef __NetBSD__ 2139#ifndef __NetBSD__
… …
1321#ifdef __APPLE__ 2144#ifdef __APPLE__
1322 /* only select works correctly on that "unix-certified" platform */ 2145 /* only select works correctly on that "unix-certified" platform */
1323 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2146 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1324 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2147 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1325#endif 2148#endif
2149#ifdef __FreeBSD__
2150 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2151#endif
1326 2152
1327 return flags; 2153 return flags;
1328} 2154}
1329 2155
1330unsigned int 2156unsigned int ecb_cold
1331ev_embeddable_backends (void) 2157ev_embeddable_backends (void)
1332{ 2158{
1333 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2159 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1334 2160
1335 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2161 /* 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 */ 2162 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1337 flags &= ~EVBACKEND_EPOLL; 2163 flags &= ~EVBACKEND_EPOLL;
1338 2164
1339 return flags; 2165 return flags;
1340} 2166}
1341 2167
1342unsigned int 2168unsigned int
1343ev_backend (EV_P) 2169ev_backend (EV_P)
1344{ 2170{
1345 return backend; 2171 return backend;
1346} 2172}
1347 2173
2174#if EV_FEATURE_API
1348unsigned int 2175unsigned int
1349ev_loop_count (EV_P) 2176ev_iteration (EV_P)
1350{ 2177{
1351 return loop_count; 2178 return loop_count;
2179}
2180
2181unsigned int
2182ev_depth (EV_P)
2183{
2184 return loop_depth;
1352} 2185}
1353 2186
1354void 2187void
1355ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2188ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1356{ 2189{
… …
1361ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2194ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1362{ 2195{
1363 timeout_blocktime = interval; 2196 timeout_blocktime = interval;
1364} 2197}
1365 2198
2199void
2200ev_set_userdata (EV_P_ void *data)
2201{
2202 userdata = data;
2203}
2204
2205void *
2206ev_userdata (EV_P)
2207{
2208 return userdata;
2209}
2210
2211void
2212ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
2213{
2214 invoke_cb = invoke_pending_cb;
2215}
2216
2217void
2218ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
2219{
2220 release_cb = release;
2221 acquire_cb = acquire;
2222}
2223#endif
2224
1366/* initialise a loop structure, must be zero-initialised */ 2225/* initialise a loop structure, must be zero-initialised */
1367static void noinline 2226static void noinline ecb_cold
1368loop_init (EV_P_ unsigned int flags) 2227loop_init (EV_P_ unsigned int flags)
1369{ 2228{
1370 if (!backend) 2229 if (!backend)
1371 { 2230 {
2231 origflags = flags;
2232
1372#if EV_USE_REALTIME 2233#if EV_USE_REALTIME
1373 if (!have_realtime) 2234 if (!have_realtime)
1374 { 2235 {
1375 struct timespec ts; 2236 struct timespec ts;
1376 2237
… …
1387 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2248 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1388 have_monotonic = 1; 2249 have_monotonic = 1;
1389 } 2250 }
1390#endif 2251#endif
1391 2252
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 */ 2253 /* pid check not overridable via env */
1407#ifndef _WIN32 2254#ifndef _WIN32
1408 if (flags & EVFLAG_FORKCHECK) 2255 if (flags & EVFLAG_FORKCHECK)
1409 curpid = getpid (); 2256 curpid = getpid ();
1410#endif 2257#endif
… …
1412 if (!(flags & EVFLAG_NOENV) 2259 if (!(flags & EVFLAG_NOENV)
1413 && !enable_secure () 2260 && !enable_secure ()
1414 && getenv ("LIBEV_FLAGS")) 2261 && getenv ("LIBEV_FLAGS"))
1415 flags = atoi (getenv ("LIBEV_FLAGS")); 2262 flags = atoi (getenv ("LIBEV_FLAGS"));
1416 2263
1417 if (!(flags & 0x0000ffffU)) 2264 ev_rt_now = ev_time ();
2265 mn_now = get_clock ();
2266 now_floor = mn_now;
2267 rtmn_diff = ev_rt_now - mn_now;
2268#if EV_FEATURE_API
2269 invoke_cb = ev_invoke_pending;
2270#endif
2271
2272 io_blocktime = 0.;
2273 timeout_blocktime = 0.;
2274 backend = 0;
2275 backend_fd = -1;
2276 sig_pending = 0;
2277#if EV_ASYNC_ENABLE
2278 async_pending = 0;
2279#endif
2280 pipe_write_skipped = 0;
2281 pipe_write_wanted = 0;
2282#if EV_USE_INOTIFY
2283 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2284#endif
2285#if EV_USE_SIGNALFD
2286 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2287#endif
2288
2289 if (!(flags & EVBACKEND_MASK))
1418 flags |= ev_recommended_backends (); 2290 flags |= ev_recommended_backends ();
1419 2291
2292#if EV_USE_IOCP
2293 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2294#endif
1420#if EV_USE_PORT 2295#if EV_USE_PORT
1421 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2296 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1422#endif 2297#endif
1423#if EV_USE_KQUEUE 2298#if EV_USE_KQUEUE
1424 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2299 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1433 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2308 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1434#endif 2309#endif
1435 2310
1436 ev_prepare_init (&pending_w, pendingcb); 2311 ev_prepare_init (&pending_w, pendingcb);
1437 2312
2313#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1438 ev_init (&pipe_w, pipecb); 2314 ev_init (&pipe_w, pipecb);
1439 ev_set_priority (&pipe_w, EV_MAXPRI); 2315 ev_set_priority (&pipe_w, EV_MAXPRI);
2316#endif
1440 } 2317 }
1441} 2318}
1442 2319
1443/* free up a loop structure */ 2320/* free up a loop structure */
1444static void noinline 2321void ecb_cold
1445loop_destroy (EV_P) 2322ev_loop_destroy (EV_P)
1446{ 2323{
1447 int i; 2324 int i;
1448 2325
2326#if EV_MULTIPLICITY
2327 /* mimic free (0) */
2328 if (!EV_A)
2329 return;
2330#endif
2331
2332#if EV_CLEANUP_ENABLE
2333 /* queue cleanup watchers (and execute them) */
2334 if (expect_false (cleanupcnt))
2335 {
2336 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2337 EV_INVOKE_PENDING;
2338 }
2339#endif
2340
2341#if EV_CHILD_ENABLE
2342 if (ev_is_active (&childev))
2343 {
2344 ev_ref (EV_A); /* child watcher */
2345 ev_signal_stop (EV_A_ &childev);
2346 }
2347#endif
2348
1449 if (ev_is_active (&pipe_w)) 2349 if (ev_is_active (&pipe_w))
1450 { 2350 {
1451 ev_ref (EV_A); /* signal watcher */ 2351 /*ev_ref (EV_A);*/
1452 ev_io_stop (EV_A_ &pipe_w); 2352 /*ev_io_stop (EV_A_ &pipe_w);*/
1453 2353
1454#if EV_USE_EVENTFD 2354#if EV_USE_EVENTFD
1455 if (evfd >= 0) 2355 if (evfd >= 0)
1456 close (evfd); 2356 close (evfd);
1457#endif 2357#endif
1458 2358
1459 if (evpipe [0] >= 0) 2359 if (evpipe [0] >= 0)
1460 { 2360 {
1461 close (evpipe [0]); 2361 EV_WIN32_CLOSE_FD (evpipe [0]);
1462 close (evpipe [1]); 2362 EV_WIN32_CLOSE_FD (evpipe [1]);
1463 } 2363 }
1464 } 2364 }
2365
2366#if EV_USE_SIGNALFD
2367 if (ev_is_active (&sigfd_w))
2368 close (sigfd);
2369#endif
1465 2370
1466#if EV_USE_INOTIFY 2371#if EV_USE_INOTIFY
1467 if (fs_fd >= 0) 2372 if (fs_fd >= 0)
1468 close (fs_fd); 2373 close (fs_fd);
1469#endif 2374#endif
1470 2375
1471 if (backend_fd >= 0) 2376 if (backend_fd >= 0)
1472 close (backend_fd); 2377 close (backend_fd);
1473 2378
2379#if EV_USE_IOCP
2380 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2381#endif
1474#if EV_USE_PORT 2382#if EV_USE_PORT
1475 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2383 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1476#endif 2384#endif
1477#if EV_USE_KQUEUE 2385#if EV_USE_KQUEUE
1478 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2386 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1493#if EV_IDLE_ENABLE 2401#if EV_IDLE_ENABLE
1494 array_free (idle, [i]); 2402 array_free (idle, [i]);
1495#endif 2403#endif
1496 } 2404 }
1497 2405
1498 ev_free (anfds); anfdmax = 0; 2406 ev_free (anfds); anfds = 0; anfdmax = 0;
1499 2407
1500 /* have to use the microsoft-never-gets-it-right macro */ 2408 /* have to use the microsoft-never-gets-it-right macro */
1501 array_free (rfeed, EMPTY); 2409 array_free (rfeed, EMPTY);
1502 array_free (fdchange, EMPTY); 2410 array_free (fdchange, EMPTY);
1503 array_free (timer, EMPTY); 2411 array_free (timer, EMPTY);
… …
1505 array_free (periodic, EMPTY); 2413 array_free (periodic, EMPTY);
1506#endif 2414#endif
1507#if EV_FORK_ENABLE 2415#if EV_FORK_ENABLE
1508 array_free (fork, EMPTY); 2416 array_free (fork, EMPTY);
1509#endif 2417#endif
2418#if EV_CLEANUP_ENABLE
2419 array_free (cleanup, EMPTY);
2420#endif
1510 array_free (prepare, EMPTY); 2421 array_free (prepare, EMPTY);
1511 array_free (check, EMPTY); 2422 array_free (check, EMPTY);
1512#if EV_ASYNC_ENABLE 2423#if EV_ASYNC_ENABLE
1513 array_free (async, EMPTY); 2424 array_free (async, EMPTY);
1514#endif 2425#endif
1515 2426
1516 backend = 0; 2427 backend = 0;
2428
2429#if EV_MULTIPLICITY
2430 if (ev_is_default_loop (EV_A))
2431#endif
2432 ev_default_loop_ptr = 0;
2433#if EV_MULTIPLICITY
2434 else
2435 ev_free (EV_A);
2436#endif
1517} 2437}
1518 2438
1519#if EV_USE_INOTIFY 2439#if EV_USE_INOTIFY
1520inline_size void infy_fork (EV_P); 2440inline_size void infy_fork (EV_P);
1521#endif 2441#endif
… …
1536 infy_fork (EV_A); 2456 infy_fork (EV_A);
1537#endif 2457#endif
1538 2458
1539 if (ev_is_active (&pipe_w)) 2459 if (ev_is_active (&pipe_w))
1540 { 2460 {
1541 /* this "locks" the handlers against writing to the pipe */ 2461 /* 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 2462
1548 ev_ref (EV_A); 2463 ev_ref (EV_A);
1549 ev_io_stop (EV_A_ &pipe_w); 2464 ev_io_stop (EV_A_ &pipe_w);
1550 2465
1551#if EV_USE_EVENTFD 2466#if EV_USE_EVENTFD
… …
1553 close (evfd); 2468 close (evfd);
1554#endif 2469#endif
1555 2470
1556 if (evpipe [0] >= 0) 2471 if (evpipe [0] >= 0)
1557 { 2472 {
1558 close (evpipe [0]); 2473 EV_WIN32_CLOSE_FD (evpipe [0]);
1559 close (evpipe [1]); 2474 EV_WIN32_CLOSE_FD (evpipe [1]);
1560 } 2475 }
1561 2476
2477#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1562 evpipe_init (EV_A); 2478 evpipe_init (EV_A);
1563 /* now iterate over everything, in case we missed something */ 2479 /* now iterate over everything, in case we missed something */
1564 pipecb (EV_A_ &pipe_w, EV_READ); 2480 pipecb (EV_A_ &pipe_w, EV_READ);
2481#endif
1565 } 2482 }
1566 2483
1567 postfork = 0; 2484 postfork = 0;
1568} 2485}
1569 2486
1570#if EV_MULTIPLICITY 2487#if EV_MULTIPLICITY
1571 2488
1572struct ev_loop * 2489struct ev_loop * ecb_cold
1573ev_loop_new (unsigned int flags) 2490ev_loop_new (unsigned int flags)
1574{ 2491{
1575 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2492 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1576 2493
1577 memset (loop, 0, sizeof (struct ev_loop)); 2494 memset (EV_A, 0, sizeof (struct ev_loop));
1578
1579 loop_init (EV_A_ flags); 2495 loop_init (EV_A_ flags);
1580 2496
1581 if (ev_backend (EV_A)) 2497 if (ev_backend (EV_A))
1582 return loop; 2498 return EV_A;
1583 2499
2500 ev_free (EV_A);
1584 return 0; 2501 return 0;
1585} 2502}
1586 2503
1587void 2504#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 2505
1600#if EV_VERIFY 2506#if EV_VERIFY
1601static void noinline 2507static void noinline ecb_cold
1602verify_watcher (EV_P_ W w) 2508verify_watcher (EV_P_ W w)
1603{ 2509{
1604 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2510 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1605 2511
1606 if (w->pending) 2512 if (w->pending)
1607 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2513 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1608} 2514}
1609 2515
1610static void noinline 2516static void noinline ecb_cold
1611verify_heap (EV_P_ ANHE *heap, int N) 2517verify_heap (EV_P_ ANHE *heap, int N)
1612{ 2518{
1613 int i; 2519 int i;
1614 2520
1615 for (i = HEAP0; i < N + HEAP0; ++i) 2521 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1620 2526
1621 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2527 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1622 } 2528 }
1623} 2529}
1624 2530
1625static void noinline 2531static void noinline ecb_cold
1626array_verify (EV_P_ W *ws, int cnt) 2532array_verify (EV_P_ W *ws, int cnt)
1627{ 2533{
1628 while (cnt--) 2534 while (cnt--)
1629 { 2535 {
1630 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2536 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1631 verify_watcher (EV_A_ ws [cnt]); 2537 verify_watcher (EV_A_ ws [cnt]);
1632 } 2538 }
1633} 2539}
1634#endif 2540#endif
1635 2541
1636void 2542#if EV_FEATURE_API
2543void ecb_cold
1637ev_loop_verify (EV_P) 2544ev_verify (EV_P)
1638{ 2545{
1639#if EV_VERIFY 2546#if EV_VERIFY
1640 int i; 2547 int i;
1641 WL w; 2548 WL w;
1642 2549
… …
1676#if EV_FORK_ENABLE 2583#if EV_FORK_ENABLE
1677 assert (forkmax >= forkcnt); 2584 assert (forkmax >= forkcnt);
1678 array_verify (EV_A_ (W *)forks, forkcnt); 2585 array_verify (EV_A_ (W *)forks, forkcnt);
1679#endif 2586#endif
1680 2587
2588#if EV_CLEANUP_ENABLE
2589 assert (cleanupmax >= cleanupcnt);
2590 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2591#endif
2592
1681#if EV_ASYNC_ENABLE 2593#if EV_ASYNC_ENABLE
1682 assert (asyncmax >= asynccnt); 2594 assert (asyncmax >= asynccnt);
1683 array_verify (EV_A_ (W *)asyncs, asynccnt); 2595 array_verify (EV_A_ (W *)asyncs, asynccnt);
1684#endif 2596#endif
1685 2597
2598#if EV_PREPARE_ENABLE
1686 assert (preparemax >= preparecnt); 2599 assert (preparemax >= preparecnt);
1687 array_verify (EV_A_ (W *)prepares, preparecnt); 2600 array_verify (EV_A_ (W *)prepares, preparecnt);
2601#endif
1688 2602
2603#if EV_CHECK_ENABLE
1689 assert (checkmax >= checkcnt); 2604 assert (checkmax >= checkcnt);
1690 array_verify (EV_A_ (W *)checks, checkcnt); 2605 array_verify (EV_A_ (W *)checks, checkcnt);
2606#endif
1691 2607
1692# if 0 2608# if 0
2609#if EV_CHILD_ENABLE
1693 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2610 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) 2611 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2612#endif
1695# endif 2613# endif
1696#endif 2614#endif
1697} 2615}
1698 2616#endif
1699#endif /* multiplicity */
1700 2617
1701#if EV_MULTIPLICITY 2618#if EV_MULTIPLICITY
1702struct ev_loop * 2619struct ev_loop * ecb_cold
1703ev_default_loop_init (unsigned int flags)
1704#else 2620#else
1705int 2621int
2622#endif
1706ev_default_loop (unsigned int flags) 2623ev_default_loop (unsigned int flags)
1707#endif
1708{ 2624{
1709 if (!ev_default_loop_ptr) 2625 if (!ev_default_loop_ptr)
1710 { 2626 {
1711#if EV_MULTIPLICITY 2627#if EV_MULTIPLICITY
1712 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2628 EV_P = ev_default_loop_ptr = &default_loop_struct;
1713#else 2629#else
1714 ev_default_loop_ptr = 1; 2630 ev_default_loop_ptr = 1;
1715#endif 2631#endif
1716 2632
1717 loop_init (EV_A_ flags); 2633 loop_init (EV_A_ flags);
1718 2634
1719 if (ev_backend (EV_A)) 2635 if (ev_backend (EV_A))
1720 { 2636 {
1721#ifndef _WIN32 2637#if EV_CHILD_ENABLE
1722 ev_signal_init (&childev, childcb, SIGCHLD); 2638 ev_signal_init (&childev, childcb, SIGCHLD);
1723 ev_set_priority (&childev, EV_MAXPRI); 2639 ev_set_priority (&childev, EV_MAXPRI);
1724 ev_signal_start (EV_A_ &childev); 2640 ev_signal_start (EV_A_ &childev);
1725 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2641 ev_unref (EV_A); /* child watcher should not keep loop alive */
1726#endif 2642#endif
… …
1731 2647
1732 return ev_default_loop_ptr; 2648 return ev_default_loop_ptr;
1733} 2649}
1734 2650
1735void 2651void
1736ev_default_destroy (void) 2652ev_loop_fork (EV_P)
1737{ 2653{
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 */ 2654 postfork = 1; /* must be in line with ev_default_fork */
1760} 2655}
1761 2656
1762/*****************************************************************************/ 2657/*****************************************************************************/
1763 2658
1764void 2659void
1765ev_invoke (EV_P_ void *w, int revents) 2660ev_invoke (EV_P_ void *w, int revents)
1766{ 2661{
1767 EV_CB_INVOKE ((W)w, revents); 2662 EV_CB_INVOKE ((W)w, revents);
1768} 2663}
1769 2664
1770inline_speed void 2665unsigned int
1771call_pending (EV_P) 2666ev_pending_count (EV_P)
2667{
2668 int pri;
2669 unsigned int count = 0;
2670
2671 for (pri = NUMPRI; pri--; )
2672 count += pendingcnt [pri];
2673
2674 return count;
2675}
2676
2677void noinline
2678ev_invoke_pending (EV_P)
1772{ 2679{
1773 int pri; 2680 int pri;
1774 2681
1775 for (pri = NUMPRI; pri--; ) 2682 for (pri = NUMPRI; pri--; )
1776 while (pendingcnt [pri]) 2683 while (pendingcnt [pri])
1777 { 2684 {
1778 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2685 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 2686
1783 p->w->pending = 0; 2687 p->w->pending = 0;
1784 EV_CB_INVOKE (p->w, p->events); 2688 EV_CB_INVOKE (p->w, p->events);
1785 EV_FREQUENT_CHECK; 2689 EV_FREQUENT_CHECK;
1786 } 2690 }
… …
1843 EV_FREQUENT_CHECK; 2747 EV_FREQUENT_CHECK;
1844 feed_reverse (EV_A_ (W)w); 2748 feed_reverse (EV_A_ (W)w);
1845 } 2749 }
1846 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2750 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1847 2751
1848 feed_reverse_done (EV_A_ EV_TIMEOUT); 2752 feed_reverse_done (EV_A_ EV_TIMER);
1849 } 2753 }
1850} 2754}
1851 2755
1852#if EV_PERIODIC_ENABLE 2756#if EV_PERIODIC_ENABLE
2757
2758static void noinline
2759periodic_recalc (EV_P_ ev_periodic *w)
2760{
2761 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2762 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2763
2764 /* the above almost always errs on the low side */
2765 while (at <= ev_rt_now)
2766 {
2767 ev_tstamp nat = at + w->interval;
2768
2769 /* when resolution fails us, we use ev_rt_now */
2770 if (expect_false (nat == at))
2771 {
2772 at = ev_rt_now;
2773 break;
2774 }
2775
2776 at = nat;
2777 }
2778
2779 ev_at (w) = at;
2780}
2781
1853/* make periodics pending */ 2782/* make periodics pending */
1854inline_size void 2783inline_size void
1855periodics_reify (EV_P) 2784periodics_reify (EV_P)
1856{ 2785{
1857 EV_FREQUENT_CHECK; 2786 EV_FREQUENT_CHECK;
… …
1876 ANHE_at_cache (periodics [HEAP0]); 2805 ANHE_at_cache (periodics [HEAP0]);
1877 downheap (periodics, periodiccnt, HEAP0); 2806 downheap (periodics, periodiccnt, HEAP0);
1878 } 2807 }
1879 else if (w->interval) 2808 else if (w->interval)
1880 { 2809 {
1881 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2810 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]); 2811 ANHE_at_cache (periodics [HEAP0]);
1896 downheap (periodics, periodiccnt, HEAP0); 2812 downheap (periodics, periodiccnt, HEAP0);
1897 } 2813 }
1898 else 2814 else
1899 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2815 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1906 feed_reverse_done (EV_A_ EV_PERIODIC); 2822 feed_reverse_done (EV_A_ EV_PERIODIC);
1907 } 2823 }
1908} 2824}
1909 2825
1910/* simply recalculate all periodics */ 2826/* simply recalculate all periodics */
1911/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2827/* TODO: maybe ensure that at least one event happens when jumping forward? */
1912static void noinline 2828static void noinline ecb_cold
1913periodics_reschedule (EV_P) 2829periodics_reschedule (EV_P)
1914{ 2830{
1915 int i; 2831 int i;
1916 2832
1917 /* adjust periodics after time jump */ 2833 /* adjust periodics after time jump */
… …
1920 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2836 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1921 2837
1922 if (w->reschedule_cb) 2838 if (w->reschedule_cb)
1923 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2839 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1924 else if (w->interval) 2840 else if (w->interval)
1925 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2841 periodic_recalc (EV_A_ w);
1926 2842
1927 ANHE_at_cache (periodics [i]); 2843 ANHE_at_cache (periodics [i]);
1928 } 2844 }
1929 2845
1930 reheap (periodics, periodiccnt); 2846 reheap (periodics, periodiccnt);
1931} 2847}
1932#endif 2848#endif
1933 2849
1934/* adjust all timers by a given offset */ 2850/* adjust all timers by a given offset */
1935static void noinline 2851static void noinline ecb_cold
1936timers_reschedule (EV_P_ ev_tstamp adjust) 2852timers_reschedule (EV_P_ ev_tstamp adjust)
1937{ 2853{
1938 int i; 2854 int i;
1939 2855
1940 for (i = 0; i < timercnt; ++i) 2856 for (i = 0; i < timercnt; ++i)
… …
1944 ANHE_at_cache (*he); 2860 ANHE_at_cache (*he);
1945 } 2861 }
1946} 2862}
1947 2863
1948/* fetch new monotonic and realtime times from the kernel */ 2864/* fetch new monotonic and realtime times from the kernel */
1949/* also detetc if there was a timejump, and act accordingly */ 2865/* also detect if there was a timejump, and act accordingly */
1950inline_speed void 2866inline_speed void
1951time_update (EV_P_ ev_tstamp max_block) 2867time_update (EV_P_ ev_tstamp max_block)
1952{ 2868{
1953 int i;
1954
1955#if EV_USE_MONOTONIC 2869#if EV_USE_MONOTONIC
1956 if (expect_true (have_monotonic)) 2870 if (expect_true (have_monotonic))
1957 { 2871 {
2872 int i;
1958 ev_tstamp odiff = rtmn_diff; 2873 ev_tstamp odiff = rtmn_diff;
1959 2874
1960 mn_now = get_clock (); 2875 mn_now = get_clock ();
1961 2876
1962 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2877 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1978 * doesn't hurt either as we only do this on time-jumps or 2893 * doesn't hurt either as we only do this on time-jumps or
1979 * in the unlikely event of having been preempted here. 2894 * in the unlikely event of having been preempted here.
1980 */ 2895 */
1981 for (i = 4; --i; ) 2896 for (i = 4; --i; )
1982 { 2897 {
2898 ev_tstamp diff;
1983 rtmn_diff = ev_rt_now - mn_now; 2899 rtmn_diff = ev_rt_now - mn_now;
1984 2900
2901 diff = odiff - rtmn_diff;
2902
1985 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2903 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1986 return; /* all is well */ 2904 return; /* all is well */
1987 2905
1988 ev_rt_now = ev_time (); 2906 ev_rt_now = ev_time ();
1989 mn_now = get_clock (); 2907 mn_now = get_clock ();
1990 now_floor = mn_now; 2908 now_floor = mn_now;
… …
2012 2930
2013 mn_now = ev_rt_now; 2931 mn_now = ev_rt_now;
2014 } 2932 }
2015} 2933}
2016 2934
2017static int loop_done;
2018
2019void 2935void
2020ev_loop (EV_P_ int flags) 2936ev_run (EV_P_ int flags)
2021{ 2937{
2938#if EV_FEATURE_API
2939 ++loop_depth;
2940#endif
2941
2942 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2943
2022 loop_done = EVUNLOOP_CANCEL; 2944 loop_done = EVBREAK_CANCEL;
2023 2945
2024 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2946 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2025 2947
2026 do 2948 do
2027 { 2949 {
2028#if EV_VERIFY >= 2 2950#if EV_VERIFY >= 2
2029 ev_loop_verify (EV_A); 2951 ev_verify (EV_A);
2030#endif 2952#endif
2031 2953
2032#ifndef _WIN32 2954#ifndef _WIN32
2033 if (expect_false (curpid)) /* penalise the forking check even more */ 2955 if (expect_false (curpid)) /* penalise the forking check even more */
2034 if (expect_false (getpid () != curpid)) 2956 if (expect_false (getpid () != curpid))
… …
2042 /* we might have forked, so queue fork handlers */ 2964 /* we might have forked, so queue fork handlers */
2043 if (expect_false (postfork)) 2965 if (expect_false (postfork))
2044 if (forkcnt) 2966 if (forkcnt)
2045 { 2967 {
2046 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2968 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2047 call_pending (EV_A); 2969 EV_INVOKE_PENDING;
2048 } 2970 }
2049#endif 2971#endif
2050 2972
2973#if EV_PREPARE_ENABLE
2051 /* queue prepare watchers (and execute them) */ 2974 /* queue prepare watchers (and execute them) */
2052 if (expect_false (preparecnt)) 2975 if (expect_false (preparecnt))
2053 { 2976 {
2054 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2977 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2055 call_pending (EV_A); 2978 EV_INVOKE_PENDING;
2056 } 2979 }
2980#endif
2981
2982 if (expect_false (loop_done))
2983 break;
2057 2984
2058 /* we might have forked, so reify kernel state if necessary */ 2985 /* we might have forked, so reify kernel state if necessary */
2059 if (expect_false (postfork)) 2986 if (expect_false (postfork))
2060 loop_fork (EV_A); 2987 loop_fork (EV_A);
2061 2988
… …
2065 /* calculate blocking time */ 2992 /* calculate blocking time */
2066 { 2993 {
2067 ev_tstamp waittime = 0.; 2994 ev_tstamp waittime = 0.;
2068 ev_tstamp sleeptime = 0.; 2995 ev_tstamp sleeptime = 0.;
2069 2996
2997 /* remember old timestamp for io_blocktime calculation */
2998 ev_tstamp prev_mn_now = mn_now;
2999
3000 /* update time to cancel out callback processing overhead */
3001 time_update (EV_A_ 1e100);
3002
3003 /* from now on, we want a pipe-wake-up */
3004 pipe_write_wanted = 1;
3005
3006 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3007
2070 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3008 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2071 { 3009 {
2072 /* update time to cancel out callback processing overhead */
2073 time_update (EV_A_ 1e100);
2074
2075 waittime = MAX_BLOCKTIME; 3010 waittime = MAX_BLOCKTIME;
2076 3011
2077 if (timercnt) 3012 if (timercnt)
2078 { 3013 {
2079 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3014 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2080 if (waittime > to) waittime = to; 3015 if (waittime > to) waittime = to;
2081 } 3016 }
2082 3017
2083#if EV_PERIODIC_ENABLE 3018#if EV_PERIODIC_ENABLE
2084 if (periodiccnt) 3019 if (periodiccnt)
2085 { 3020 {
2086 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3021 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2087 if (waittime > to) waittime = to; 3022 if (waittime > to) waittime = to;
2088 } 3023 }
2089#endif 3024#endif
2090 3025
3026 /* don't let timeouts decrease the waittime below timeout_blocktime */
2091 if (expect_false (waittime < timeout_blocktime)) 3027 if (expect_false (waittime < timeout_blocktime))
2092 waittime = timeout_blocktime; 3028 waittime = timeout_blocktime;
2093 3029
2094 sleeptime = waittime - backend_fudge; 3030 /* at this point, we NEED to wait, so we have to ensure */
3031 /* to pass a minimum nonzero value to the backend */
3032 if (expect_false (waittime < backend_mintime))
3033 waittime = backend_mintime;
2095 3034
3035 /* extra check because io_blocktime is commonly 0 */
2096 if (expect_true (sleeptime > io_blocktime)) 3036 if (expect_false (io_blocktime))
2097 sleeptime = io_blocktime;
2098
2099 if (sleeptime)
2100 { 3037 {
3038 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3039
3040 if (sleeptime > waittime - backend_mintime)
3041 sleeptime = waittime - backend_mintime;
3042
3043 if (expect_true (sleeptime > 0.))
3044 {
2101 ev_sleep (sleeptime); 3045 ev_sleep (sleeptime);
2102 waittime -= sleeptime; 3046 waittime -= sleeptime;
3047 }
2103 } 3048 }
2104 } 3049 }
2105 3050
3051#if EV_FEATURE_API
2106 ++loop_count; 3052 ++loop_count;
3053#endif
3054 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2107 backend_poll (EV_A_ waittime); 3055 backend_poll (EV_A_ waittime);
3056 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3057
3058 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3059
3060 if (pipe_write_skipped)
3061 {
3062 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3063 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3064 }
3065
2108 3066
2109 /* update ev_rt_now, do magic */ 3067 /* update ev_rt_now, do magic */
2110 time_update (EV_A_ waittime + sleeptime); 3068 time_update (EV_A_ waittime + sleeptime);
2111 } 3069 }
2112 3070
… …
2119#if EV_IDLE_ENABLE 3077#if EV_IDLE_ENABLE
2120 /* queue idle watchers unless other events are pending */ 3078 /* queue idle watchers unless other events are pending */
2121 idle_reify (EV_A); 3079 idle_reify (EV_A);
2122#endif 3080#endif
2123 3081
3082#if EV_CHECK_ENABLE
2124 /* queue check watchers, to be executed first */ 3083 /* queue check watchers, to be executed first */
2125 if (expect_false (checkcnt)) 3084 if (expect_false (checkcnt))
2126 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3085 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3086#endif
2127 3087
2128 call_pending (EV_A); 3088 EV_INVOKE_PENDING;
2129 } 3089 }
2130 while (expect_true ( 3090 while (expect_true (
2131 activecnt 3091 activecnt
2132 && !loop_done 3092 && !loop_done
2133 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3093 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2134 )); 3094 ));
2135 3095
2136 if (loop_done == EVUNLOOP_ONE) 3096 if (loop_done == EVBREAK_ONE)
2137 loop_done = EVUNLOOP_CANCEL; 3097 loop_done = EVBREAK_CANCEL;
3098
3099#if EV_FEATURE_API
3100 --loop_depth;
3101#endif
2138} 3102}
2139 3103
2140void 3104void
2141ev_unloop (EV_P_ int how) 3105ev_break (EV_P_ int how)
2142{ 3106{
2143 loop_done = how; 3107 loop_done = how;
2144} 3108}
2145 3109
2146void 3110void
… …
2193inline_size void 3157inline_size void
2194wlist_del (WL *head, WL elem) 3158wlist_del (WL *head, WL elem)
2195{ 3159{
2196 while (*head) 3160 while (*head)
2197 { 3161 {
2198 if (*head == elem) 3162 if (expect_true (*head == elem))
2199 { 3163 {
2200 *head = elem->next; 3164 *head = elem->next;
2201 return; 3165 break;
2202 } 3166 }
2203 3167
2204 head = &(*head)->next; 3168 head = &(*head)->next;
2205 } 3169 }
2206} 3170}
… …
2234} 3198}
2235 3199
2236inline_size void 3200inline_size void
2237pri_adjust (EV_P_ W w) 3201pri_adjust (EV_P_ W w)
2238{ 3202{
2239 int pri = w->priority; 3203 int pri = ev_priority (w);
2240 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 3204 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2241 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 3205 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2242 w->priority = pri; 3206 ev_set_priority (w, pri);
2243} 3207}
2244 3208
2245inline_speed void 3209inline_speed void
2246ev_start (EV_P_ W w, int active) 3210ev_start (EV_P_ W w, int active)
2247{ 3211{
… …
2266 3230
2267 if (expect_false (ev_is_active (w))) 3231 if (expect_false (ev_is_active (w)))
2268 return; 3232 return;
2269 3233
2270 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3234 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2271 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3235 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2272 3236
2273 EV_FREQUENT_CHECK; 3237 EV_FREQUENT_CHECK;
2274 3238
2275 ev_start (EV_A_ (W)w, 1); 3239 ev_start (EV_A_ (W)w, 1);
2276 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3240 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2277 wlist_add (&anfds[fd].head, (WL)w); 3241 wlist_add (&anfds[fd].head, (WL)w);
2278 3242
2279 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); 3243 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2280 w->events &= ~EV__IOFDSET; 3244 w->events &= ~EV__IOFDSET;
2281 3245
2282 EV_FREQUENT_CHECK; 3246 EV_FREQUENT_CHECK;
2283} 3247}
2284 3248
… …
2294 EV_FREQUENT_CHECK; 3258 EV_FREQUENT_CHECK;
2295 3259
2296 wlist_del (&anfds[w->fd].head, (WL)w); 3260 wlist_del (&anfds[w->fd].head, (WL)w);
2297 ev_stop (EV_A_ (W)w); 3261 ev_stop (EV_A_ (W)w);
2298 3262
2299 fd_change (EV_A_ w->fd, 1); 3263 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2300 3264
2301 EV_FREQUENT_CHECK; 3265 EV_FREQUENT_CHECK;
2302} 3266}
2303 3267
2304void noinline 3268void noinline
… …
2346 timers [active] = timers [timercnt + HEAP0]; 3310 timers [active] = timers [timercnt + HEAP0];
2347 adjustheap (timers, timercnt, active); 3311 adjustheap (timers, timercnt, active);
2348 } 3312 }
2349 } 3313 }
2350 3314
2351 EV_FREQUENT_CHECK;
2352
2353 ev_at (w) -= mn_now; 3315 ev_at (w) -= mn_now;
2354 3316
2355 ev_stop (EV_A_ (W)w); 3317 ev_stop (EV_A_ (W)w);
3318
3319 EV_FREQUENT_CHECK;
2356} 3320}
2357 3321
2358void noinline 3322void noinline
2359ev_timer_again (EV_P_ ev_timer *w) 3323ev_timer_again (EV_P_ ev_timer *w)
2360{ 3324{
2361 EV_FREQUENT_CHECK; 3325 EV_FREQUENT_CHECK;
3326
3327 clear_pending (EV_A_ (W)w);
2362 3328
2363 if (ev_is_active (w)) 3329 if (ev_is_active (w))
2364 { 3330 {
2365 if (w->repeat) 3331 if (w->repeat)
2366 { 3332 {
… …
2378 } 3344 }
2379 3345
2380 EV_FREQUENT_CHECK; 3346 EV_FREQUENT_CHECK;
2381} 3347}
2382 3348
3349ev_tstamp
3350ev_timer_remaining (EV_P_ ev_timer *w)
3351{
3352 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3353}
3354
2383#if EV_PERIODIC_ENABLE 3355#if EV_PERIODIC_ENABLE
2384void noinline 3356void noinline
2385ev_periodic_start (EV_P_ ev_periodic *w) 3357ev_periodic_start (EV_P_ ev_periodic *w)
2386{ 3358{
2387 if (expect_false (ev_is_active (w))) 3359 if (expect_false (ev_is_active (w)))
… …
2390 if (w->reschedule_cb) 3362 if (w->reschedule_cb)
2391 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3363 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2392 else if (w->interval) 3364 else if (w->interval)
2393 { 3365 {
2394 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3366 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2395 /* this formula differs from the one in periodic_reify because we do not always round up */ 3367 periodic_recalc (EV_A_ w);
2396 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2397 } 3368 }
2398 else 3369 else
2399 ev_at (w) = w->offset; 3370 ev_at (w) = w->offset;
2400 3371
2401 EV_FREQUENT_CHECK; 3372 EV_FREQUENT_CHECK;
… …
2433 periodics [active] = periodics [periodiccnt + HEAP0]; 3404 periodics [active] = periodics [periodiccnt + HEAP0];
2434 adjustheap (periodics, periodiccnt, active); 3405 adjustheap (periodics, periodiccnt, active);
2435 } 3406 }
2436 } 3407 }
2437 3408
2438 EV_FREQUENT_CHECK;
2439
2440 ev_stop (EV_A_ (W)w); 3409 ev_stop (EV_A_ (W)w);
3410
3411 EV_FREQUENT_CHECK;
2441} 3412}
2442 3413
2443void noinline 3414void noinline
2444ev_periodic_again (EV_P_ ev_periodic *w) 3415ev_periodic_again (EV_P_ ev_periodic *w)
2445{ 3416{
… …
2451 3422
2452#ifndef SA_RESTART 3423#ifndef SA_RESTART
2453# define SA_RESTART 0 3424# define SA_RESTART 0
2454#endif 3425#endif
2455 3426
3427#if EV_SIGNAL_ENABLE
3428
2456void noinline 3429void noinline
2457ev_signal_start (EV_P_ ev_signal *w) 3430ev_signal_start (EV_P_ ev_signal *w)
2458{ 3431{
2459#if EV_MULTIPLICITY
2460 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2461#endif
2462 if (expect_false (ev_is_active (w))) 3432 if (expect_false (ev_is_active (w)))
2463 return; 3433 return;
2464 3434
2465 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 3435 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2466 3436
2467 evpipe_init (EV_A); 3437#if EV_MULTIPLICITY
3438 assert (("libev: a signal must not be attached to two different loops",
3439 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2468 3440
2469 EV_FREQUENT_CHECK; 3441 signals [w->signum - 1].loop = EV_A;
3442#endif
2470 3443
3444 EV_FREQUENT_CHECK;
3445
3446#if EV_USE_SIGNALFD
3447 if (sigfd == -2)
2471 { 3448 {
2472#ifndef _WIN32 3449 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2473 sigset_t full, prev; 3450 if (sigfd < 0 && errno == EINVAL)
2474 sigfillset (&full); 3451 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2475 sigprocmask (SIG_SETMASK, &full, &prev);
2476#endif
2477 3452
2478 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 3453 if (sigfd >= 0)
3454 {
3455 fd_intern (sigfd); /* doing it twice will not hurt */
2479 3456
2480#ifndef _WIN32 3457 sigemptyset (&sigfd_set);
2481 sigprocmask (SIG_SETMASK, &prev, 0); 3458
2482#endif 3459 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3460 ev_set_priority (&sigfd_w, EV_MAXPRI);
3461 ev_io_start (EV_A_ &sigfd_w);
3462 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3463 }
2483 } 3464 }
3465
3466 if (sigfd >= 0)
3467 {
3468 /* TODO: check .head */
3469 sigaddset (&sigfd_set, w->signum);
3470 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3471
3472 signalfd (sigfd, &sigfd_set, 0);
3473 }
3474#endif
2484 3475
2485 ev_start (EV_A_ (W)w, 1); 3476 ev_start (EV_A_ (W)w, 1);
2486 wlist_add (&signals [w->signum - 1].head, (WL)w); 3477 wlist_add (&signals [w->signum - 1].head, (WL)w);
2487 3478
2488 if (!((WL)w)->next) 3479 if (!((WL)w)->next)
3480# if EV_USE_SIGNALFD
3481 if (sigfd < 0) /*TODO*/
3482# endif
2489 { 3483 {
2490#if _WIN32 3484# ifdef _WIN32
3485 evpipe_init (EV_A);
3486
2491 signal (w->signum, ev_sighandler); 3487 signal (w->signum, ev_sighandler);
2492#else 3488# else
2493 struct sigaction sa; 3489 struct sigaction sa;
3490
3491 evpipe_init (EV_A);
3492
2494 sa.sa_handler = ev_sighandler; 3493 sa.sa_handler = ev_sighandler;
2495 sigfillset (&sa.sa_mask); 3494 sigfillset (&sa.sa_mask);
2496 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3495 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2497 sigaction (w->signum, &sa, 0); 3496 sigaction (w->signum, &sa, 0);
3497
3498 if (origflags & EVFLAG_NOSIGMASK)
3499 {
3500 sigemptyset (&sa.sa_mask);
3501 sigaddset (&sa.sa_mask, w->signum);
3502 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3503 }
2498#endif 3504#endif
2499 } 3505 }
2500 3506
2501 EV_FREQUENT_CHECK; 3507 EV_FREQUENT_CHECK;
2502} 3508}
2503 3509
2504void noinline 3510void noinline
… …
2512 3518
2513 wlist_del (&signals [w->signum - 1].head, (WL)w); 3519 wlist_del (&signals [w->signum - 1].head, (WL)w);
2514 ev_stop (EV_A_ (W)w); 3520 ev_stop (EV_A_ (W)w);
2515 3521
2516 if (!signals [w->signum - 1].head) 3522 if (!signals [w->signum - 1].head)
3523 {
3524#if EV_MULTIPLICITY
3525 signals [w->signum - 1].loop = 0; /* unattach from signal */
3526#endif
3527#if EV_USE_SIGNALFD
3528 if (sigfd >= 0)
3529 {
3530 sigset_t ss;
3531
3532 sigemptyset (&ss);
3533 sigaddset (&ss, w->signum);
3534 sigdelset (&sigfd_set, w->signum);
3535
3536 signalfd (sigfd, &sigfd_set, 0);
3537 sigprocmask (SIG_UNBLOCK, &ss, 0);
3538 }
3539 else
3540#endif
2517 signal (w->signum, SIG_DFL); 3541 signal (w->signum, SIG_DFL);
3542 }
2518 3543
2519 EV_FREQUENT_CHECK; 3544 EV_FREQUENT_CHECK;
2520} 3545}
3546
3547#endif
3548
3549#if EV_CHILD_ENABLE
2521 3550
2522void 3551void
2523ev_child_start (EV_P_ ev_child *w) 3552ev_child_start (EV_P_ ev_child *w)
2524{ 3553{
2525#if EV_MULTIPLICITY 3554#if EV_MULTIPLICITY
… …
2529 return; 3558 return;
2530 3559
2531 EV_FREQUENT_CHECK; 3560 EV_FREQUENT_CHECK;
2532 3561
2533 ev_start (EV_A_ (W)w, 1); 3562 ev_start (EV_A_ (W)w, 1);
2534 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3563 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2535 3564
2536 EV_FREQUENT_CHECK; 3565 EV_FREQUENT_CHECK;
2537} 3566}
2538 3567
2539void 3568void
… …
2543 if (expect_false (!ev_is_active (w))) 3572 if (expect_false (!ev_is_active (w)))
2544 return; 3573 return;
2545 3574
2546 EV_FREQUENT_CHECK; 3575 EV_FREQUENT_CHECK;
2547 3576
2548 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3577 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2549 ev_stop (EV_A_ (W)w); 3578 ev_stop (EV_A_ (W)w);
2550 3579
2551 EV_FREQUENT_CHECK; 3580 EV_FREQUENT_CHECK;
2552} 3581}
3582
3583#endif
2553 3584
2554#if EV_STAT_ENABLE 3585#if EV_STAT_ENABLE
2555 3586
2556# ifdef _WIN32 3587# ifdef _WIN32
2557# undef lstat 3588# undef lstat
… …
2563#define MIN_STAT_INTERVAL 0.1074891 3594#define MIN_STAT_INTERVAL 0.1074891
2564 3595
2565static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3596static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2566 3597
2567#if EV_USE_INOTIFY 3598#if EV_USE_INOTIFY
2568# define EV_INOTIFY_BUFSIZE 8192 3599
3600/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3601# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2569 3602
2570static void noinline 3603static void noinline
2571infy_add (EV_P_ ev_stat *w) 3604infy_add (EV_P_ ev_stat *w)
2572{ 3605{
2573 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); 3606 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);
2574 3607
2575 if (w->wd < 0) 3608 if (w->wd >= 0)
3609 {
3610 struct statfs sfs;
3611
3612 /* now local changes will be tracked by inotify, but remote changes won't */
3613 /* unless the filesystem is known to be local, we therefore still poll */
3614 /* also do poll on <2.6.25, but with normal frequency */
3615
3616 if (!fs_2625)
3617 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3618 else if (!statfs (w->path, &sfs)
3619 && (sfs.f_type == 0x1373 /* devfs */
3620 || sfs.f_type == 0xEF53 /* ext2/3 */
3621 || sfs.f_type == 0x3153464a /* jfs */
3622 || sfs.f_type == 0x52654973 /* reiser3 */
3623 || sfs.f_type == 0x01021994 /* tempfs */
3624 || sfs.f_type == 0x58465342 /* xfs */))
3625 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3626 else
3627 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2576 { 3628 }
3629 else
3630 {
3631 /* can't use inotify, continue to stat */
2577 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3632 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2578 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2579 3633
2580 /* monitor some parent directory for speedup hints */ 3634 /* if path is not there, monitor some parent directory for speedup hints */
2581 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3635 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2582 /* but an efficiency issue only */ 3636 /* but an efficiency issue only */
2583 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3637 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2584 { 3638 {
2585 char path [4096]; 3639 char path [4096];
… …
2595 if (!pend || pend == path) 3649 if (!pend || pend == path)
2596 break; 3650 break;
2597 3651
2598 *pend = 0; 3652 *pend = 0;
2599 w->wd = inotify_add_watch (fs_fd, path, mask); 3653 w->wd = inotify_add_watch (fs_fd, path, mask);
2600 } 3654 }
2601 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3655 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2602 } 3656 }
2603 } 3657 }
2604 3658
2605 if (w->wd >= 0) 3659 if (w->wd >= 0)
2606 {
2607 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3660 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2608 3661
2609 /* now local changes will be tracked by inotify, but remote changes won't */ 3662 /* now re-arm timer, if required */
2610 /* unless the filesystem it known to be local, we therefore still poll */ 3663 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2611 /* also do poll on <2.6.25, but with normal frequency */
2612 struct statfs sfs;
2613
2614 if (fs_2625 && !statfs (w->path, &sfs))
2615 if (sfs.f_type == 0x1373 /* devfs */
2616 || sfs.f_type == 0xEF53 /* ext2/3 */
2617 || sfs.f_type == 0x3153464a /* jfs */
2618 || sfs.f_type == 0x52654973 /* reiser3 */
2619 || sfs.f_type == 0x01021994 /* tempfs */
2620 || sfs.f_type == 0x58465342 /* xfs */)
2621 return;
2622
2623 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2624 ev_timer_again (EV_A_ &w->timer); 3664 ev_timer_again (EV_A_ &w->timer);
2625 } 3665 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2626} 3666}
2627 3667
2628static void noinline 3668static void noinline
2629infy_del (EV_P_ ev_stat *w) 3669infy_del (EV_P_ ev_stat *w)
2630{ 3670{
… …
2633 3673
2634 if (wd < 0) 3674 if (wd < 0)
2635 return; 3675 return;
2636 3676
2637 w->wd = -2; 3677 w->wd = -2;
2638 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3678 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2639 wlist_del (&fs_hash [slot].head, (WL)w); 3679 wlist_del (&fs_hash [slot].head, (WL)w);
2640 3680
2641 /* remove this watcher, if others are watching it, they will rearm */ 3681 /* remove this watcher, if others are watching it, they will rearm */
2642 inotify_rm_watch (fs_fd, wd); 3682 inotify_rm_watch (fs_fd, wd);
2643} 3683}
… …
2645static void noinline 3685static void noinline
2646infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3686infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2647{ 3687{
2648 if (slot < 0) 3688 if (slot < 0)
2649 /* overflow, need to check for all hash slots */ 3689 /* overflow, need to check for all hash slots */
2650 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3690 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2651 infy_wd (EV_A_ slot, wd, ev); 3691 infy_wd (EV_A_ slot, wd, ev);
2652 else 3692 else
2653 { 3693 {
2654 WL w_; 3694 WL w_;
2655 3695
2656 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3696 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2657 { 3697 {
2658 ev_stat *w = (ev_stat *)w_; 3698 ev_stat *w = (ev_stat *)w_;
2659 w_ = w_->next; /* lets us remove this watcher and all before it */ 3699 w_ = w_->next; /* lets us remove this watcher and all before it */
2660 3700
2661 if (w->wd == wd || wd == -1) 3701 if (w->wd == wd || wd == -1)
2662 { 3702 {
2663 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3703 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2664 { 3704 {
2665 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3705 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2666 w->wd = -1; 3706 w->wd = -1;
2667 infy_add (EV_A_ w); /* re-add, no matter what */ 3707 infy_add (EV_A_ w); /* re-add, no matter what */
2668 } 3708 }
2669 3709
2670 stat_timer_cb (EV_A_ &w->timer, 0); 3710 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2675 3715
2676static void 3716static void
2677infy_cb (EV_P_ ev_io *w, int revents) 3717infy_cb (EV_P_ ev_io *w, int revents)
2678{ 3718{
2679 char buf [EV_INOTIFY_BUFSIZE]; 3719 char buf [EV_INOTIFY_BUFSIZE];
2680 struct inotify_event *ev = (struct inotify_event *)buf;
2681 int ofs; 3720 int ofs;
2682 int len = read (fs_fd, buf, sizeof (buf)); 3721 int len = read (fs_fd, buf, sizeof (buf));
2683 3722
2684 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3723 for (ofs = 0; ofs < len; )
3724 {
3725 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2685 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3726 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3727 ofs += sizeof (struct inotify_event) + ev->len;
3728 }
2686} 3729}
2687 3730
2688inline_size void 3731inline_size void ecb_cold
2689check_2625 (EV_P) 3732ev_check_2625 (EV_P)
2690{ 3733{
2691 /* kernels < 2.6.25 are borked 3734 /* kernels < 2.6.25 are borked
2692 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3735 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2693 */ 3736 */
2694 struct utsname buf; 3737 if (ev_linux_version () < 0x020619)
2695 int major, minor, micro;
2696
2697 if (uname (&buf))
2698 return; 3738 return;
2699 3739
2700 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2701 return;
2702
2703 if (major < 2
2704 || (major == 2 && minor < 6)
2705 || (major == 2 && minor == 6 && micro < 25))
2706 return;
2707
2708 fs_2625 = 1; 3740 fs_2625 = 1;
3741}
3742
3743inline_size int
3744infy_newfd (void)
3745{
3746#if defined IN_CLOEXEC && defined IN_NONBLOCK
3747 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3748 if (fd >= 0)
3749 return fd;
3750#endif
3751 return inotify_init ();
2709} 3752}
2710 3753
2711inline_size void 3754inline_size void
2712infy_init (EV_P) 3755infy_init (EV_P)
2713{ 3756{
2714 if (fs_fd != -2) 3757 if (fs_fd != -2)
2715 return; 3758 return;
2716 3759
2717 fs_fd = -1; 3760 fs_fd = -1;
2718 3761
2719 check_2625 (EV_A); 3762 ev_check_2625 (EV_A);
2720 3763
2721 fs_fd = inotify_init (); 3764 fs_fd = infy_newfd ();
2722 3765
2723 if (fs_fd >= 0) 3766 if (fs_fd >= 0)
2724 { 3767 {
3768 fd_intern (fs_fd);
2725 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3769 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2726 ev_set_priority (&fs_w, EV_MAXPRI); 3770 ev_set_priority (&fs_w, EV_MAXPRI);
2727 ev_io_start (EV_A_ &fs_w); 3771 ev_io_start (EV_A_ &fs_w);
3772 ev_unref (EV_A);
2728 } 3773 }
2729} 3774}
2730 3775
2731inline_size void 3776inline_size void
2732infy_fork (EV_P) 3777infy_fork (EV_P)
… …
2734 int slot; 3779 int slot;
2735 3780
2736 if (fs_fd < 0) 3781 if (fs_fd < 0)
2737 return; 3782 return;
2738 3783
3784 ev_ref (EV_A);
3785 ev_io_stop (EV_A_ &fs_w);
2739 close (fs_fd); 3786 close (fs_fd);
2740 fs_fd = inotify_init (); 3787 fs_fd = infy_newfd ();
2741 3788
3789 if (fs_fd >= 0)
3790 {
3791 fd_intern (fs_fd);
3792 ev_io_set (&fs_w, fs_fd, EV_READ);
3793 ev_io_start (EV_A_ &fs_w);
3794 ev_unref (EV_A);
3795 }
3796
2742 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3797 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2743 { 3798 {
2744 WL w_ = fs_hash [slot].head; 3799 WL w_ = fs_hash [slot].head;
2745 fs_hash [slot].head = 0; 3800 fs_hash [slot].head = 0;
2746 3801
2747 while (w_) 3802 while (w_)
… …
2752 w->wd = -1; 3807 w->wd = -1;
2753 3808
2754 if (fs_fd >= 0) 3809 if (fs_fd >= 0)
2755 infy_add (EV_A_ w); /* re-add, no matter what */ 3810 infy_add (EV_A_ w); /* re-add, no matter what */
2756 else 3811 else
3812 {
3813 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3814 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2757 ev_timer_again (EV_A_ &w->timer); 3815 ev_timer_again (EV_A_ &w->timer);
3816 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3817 }
2758 } 3818 }
2759 } 3819 }
2760} 3820}
2761 3821
2762#endif 3822#endif
… …
2779static void noinline 3839static void noinline
2780stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3840stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2781{ 3841{
2782 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3842 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2783 3843
2784 /* we copy this here each the time so that */ 3844 ev_statdata prev = w->attr;
2785 /* prev has the old value when the callback gets invoked */
2786 w->prev = w->attr;
2787 ev_stat_stat (EV_A_ w); 3845 ev_stat_stat (EV_A_ w);
2788 3846
2789 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3847 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2790 if ( 3848 if (
2791 w->prev.st_dev != w->attr.st_dev 3849 prev.st_dev != w->attr.st_dev
2792 || w->prev.st_ino != w->attr.st_ino 3850 || prev.st_ino != w->attr.st_ino
2793 || w->prev.st_mode != w->attr.st_mode 3851 || prev.st_mode != w->attr.st_mode
2794 || w->prev.st_nlink != w->attr.st_nlink 3852 || prev.st_nlink != w->attr.st_nlink
2795 || w->prev.st_uid != w->attr.st_uid 3853 || prev.st_uid != w->attr.st_uid
2796 || w->prev.st_gid != w->attr.st_gid 3854 || prev.st_gid != w->attr.st_gid
2797 || w->prev.st_rdev != w->attr.st_rdev 3855 || prev.st_rdev != w->attr.st_rdev
2798 || w->prev.st_size != w->attr.st_size 3856 || prev.st_size != w->attr.st_size
2799 || w->prev.st_atime != w->attr.st_atime 3857 || prev.st_atime != w->attr.st_atime
2800 || w->prev.st_mtime != w->attr.st_mtime 3858 || prev.st_mtime != w->attr.st_mtime
2801 || w->prev.st_ctime != w->attr.st_ctime 3859 || prev.st_ctime != w->attr.st_ctime
2802 ) { 3860 ) {
3861 /* we only update w->prev on actual differences */
3862 /* in case we test more often than invoke the callback, */
3863 /* to ensure that prev is always different to attr */
3864 w->prev = prev;
3865
2803 #if EV_USE_INOTIFY 3866 #if EV_USE_INOTIFY
2804 if (fs_fd >= 0) 3867 if (fs_fd >= 0)
2805 { 3868 {
2806 infy_del (EV_A_ w); 3869 infy_del (EV_A_ w);
2807 infy_add (EV_A_ w); 3870 infy_add (EV_A_ w);
… …
2832 3895
2833 if (fs_fd >= 0) 3896 if (fs_fd >= 0)
2834 infy_add (EV_A_ w); 3897 infy_add (EV_A_ w);
2835 else 3898 else
2836#endif 3899#endif
3900 {
2837 ev_timer_again (EV_A_ &w->timer); 3901 ev_timer_again (EV_A_ &w->timer);
3902 ev_unref (EV_A);
3903 }
2838 3904
2839 ev_start (EV_A_ (W)w, 1); 3905 ev_start (EV_A_ (W)w, 1);
2840 3906
2841 EV_FREQUENT_CHECK; 3907 EV_FREQUENT_CHECK;
2842} 3908}
… …
2851 EV_FREQUENT_CHECK; 3917 EV_FREQUENT_CHECK;
2852 3918
2853#if EV_USE_INOTIFY 3919#if EV_USE_INOTIFY
2854 infy_del (EV_A_ w); 3920 infy_del (EV_A_ w);
2855#endif 3921#endif
3922
3923 if (ev_is_active (&w->timer))
3924 {
3925 ev_ref (EV_A);
2856 ev_timer_stop (EV_A_ &w->timer); 3926 ev_timer_stop (EV_A_ &w->timer);
3927 }
2857 3928
2858 ev_stop (EV_A_ (W)w); 3929 ev_stop (EV_A_ (W)w);
2859 3930
2860 EV_FREQUENT_CHECK; 3931 EV_FREQUENT_CHECK;
2861} 3932}
… …
2906 3977
2907 EV_FREQUENT_CHECK; 3978 EV_FREQUENT_CHECK;
2908} 3979}
2909#endif 3980#endif
2910 3981
3982#if EV_PREPARE_ENABLE
2911void 3983void
2912ev_prepare_start (EV_P_ ev_prepare *w) 3984ev_prepare_start (EV_P_ ev_prepare *w)
2913{ 3985{
2914 if (expect_false (ev_is_active (w))) 3986 if (expect_false (ev_is_active (w)))
2915 return; 3987 return;
… …
2941 4013
2942 ev_stop (EV_A_ (W)w); 4014 ev_stop (EV_A_ (W)w);
2943 4015
2944 EV_FREQUENT_CHECK; 4016 EV_FREQUENT_CHECK;
2945} 4017}
4018#endif
2946 4019
4020#if EV_CHECK_ENABLE
2947void 4021void
2948ev_check_start (EV_P_ ev_check *w) 4022ev_check_start (EV_P_ ev_check *w)
2949{ 4023{
2950 if (expect_false (ev_is_active (w))) 4024 if (expect_false (ev_is_active (w)))
2951 return; 4025 return;
… …
2977 4051
2978 ev_stop (EV_A_ (W)w); 4052 ev_stop (EV_A_ (W)w);
2979 4053
2980 EV_FREQUENT_CHECK; 4054 EV_FREQUENT_CHECK;
2981} 4055}
4056#endif
2982 4057
2983#if EV_EMBED_ENABLE 4058#if EV_EMBED_ENABLE
2984void noinline 4059void noinline
2985ev_embed_sweep (EV_P_ ev_embed *w) 4060ev_embed_sweep (EV_P_ ev_embed *w)
2986{ 4061{
2987 ev_loop (w->other, EVLOOP_NONBLOCK); 4062 ev_run (w->other, EVRUN_NOWAIT);
2988} 4063}
2989 4064
2990static void 4065static void
2991embed_io_cb (EV_P_ ev_io *io, int revents) 4066embed_io_cb (EV_P_ ev_io *io, int revents)
2992{ 4067{
2993 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4068 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2994 4069
2995 if (ev_cb (w)) 4070 if (ev_cb (w))
2996 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4071 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2997 else 4072 else
2998 ev_loop (w->other, EVLOOP_NONBLOCK); 4073 ev_run (w->other, EVRUN_NOWAIT);
2999} 4074}
3000 4075
3001static void 4076static void
3002embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4077embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3003{ 4078{
3004 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4079 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3005 4080
3006 { 4081 {
3007 struct ev_loop *loop = w->other; 4082 EV_P = w->other;
3008 4083
3009 while (fdchangecnt) 4084 while (fdchangecnt)
3010 { 4085 {
3011 fd_reify (EV_A); 4086 fd_reify (EV_A);
3012 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4087 ev_run (EV_A_ EVRUN_NOWAIT);
3013 } 4088 }
3014 } 4089 }
3015} 4090}
3016 4091
3017static void 4092static void
… …
3020 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 4095 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3021 4096
3022 ev_embed_stop (EV_A_ w); 4097 ev_embed_stop (EV_A_ w);
3023 4098
3024 { 4099 {
3025 struct ev_loop *loop = w->other; 4100 EV_P = w->other;
3026 4101
3027 ev_loop_fork (EV_A); 4102 ev_loop_fork (EV_A);
3028 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4103 ev_run (EV_A_ EVRUN_NOWAIT);
3029 } 4104 }
3030 4105
3031 ev_embed_start (EV_A_ w); 4106 ev_embed_start (EV_A_ w);
3032} 4107}
3033 4108
… …
3044{ 4119{
3045 if (expect_false (ev_is_active (w))) 4120 if (expect_false (ev_is_active (w)))
3046 return; 4121 return;
3047 4122
3048 { 4123 {
3049 struct ev_loop *loop = w->other; 4124 EV_P = w->other;
3050 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4125 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3051 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4126 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3052 } 4127 }
3053 4128
3054 EV_FREQUENT_CHECK; 4129 EV_FREQUENT_CHECK;
… …
3081 4156
3082 ev_io_stop (EV_A_ &w->io); 4157 ev_io_stop (EV_A_ &w->io);
3083 ev_prepare_stop (EV_A_ &w->prepare); 4158 ev_prepare_stop (EV_A_ &w->prepare);
3084 ev_fork_stop (EV_A_ &w->fork); 4159 ev_fork_stop (EV_A_ &w->fork);
3085 4160
4161 ev_stop (EV_A_ (W)w);
4162
3086 EV_FREQUENT_CHECK; 4163 EV_FREQUENT_CHECK;
3087} 4164}
3088#endif 4165#endif
3089 4166
3090#if EV_FORK_ENABLE 4167#if EV_FORK_ENABLE
… …
3123 4200
3124 EV_FREQUENT_CHECK; 4201 EV_FREQUENT_CHECK;
3125} 4202}
3126#endif 4203#endif
3127 4204
4205#if EV_CLEANUP_ENABLE
4206void
4207ev_cleanup_start (EV_P_ ev_cleanup *w)
4208{
4209 if (expect_false (ev_is_active (w)))
4210 return;
4211
4212 EV_FREQUENT_CHECK;
4213
4214 ev_start (EV_A_ (W)w, ++cleanupcnt);
4215 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4216 cleanups [cleanupcnt - 1] = w;
4217
4218 /* cleanup watchers should never keep a refcount on the loop */
4219 ev_unref (EV_A);
4220 EV_FREQUENT_CHECK;
4221}
4222
4223void
4224ev_cleanup_stop (EV_P_ ev_cleanup *w)
4225{
4226 clear_pending (EV_A_ (W)w);
4227 if (expect_false (!ev_is_active (w)))
4228 return;
4229
4230 EV_FREQUENT_CHECK;
4231 ev_ref (EV_A);
4232
4233 {
4234 int active = ev_active (w);
4235
4236 cleanups [active - 1] = cleanups [--cleanupcnt];
4237 ev_active (cleanups [active - 1]) = active;
4238 }
4239
4240 ev_stop (EV_A_ (W)w);
4241
4242 EV_FREQUENT_CHECK;
4243}
4244#endif
4245
3128#if EV_ASYNC_ENABLE 4246#if EV_ASYNC_ENABLE
3129void 4247void
3130ev_async_start (EV_P_ ev_async *w) 4248ev_async_start (EV_P_ ev_async *w)
3131{ 4249{
3132 if (expect_false (ev_is_active (w))) 4250 if (expect_false (ev_is_active (w)))
3133 return; 4251 return;
3134 4252
4253 w->sent = 0;
4254
3135 evpipe_init (EV_A); 4255 evpipe_init (EV_A);
3136 4256
3137 EV_FREQUENT_CHECK; 4257 EV_FREQUENT_CHECK;
3138 4258
3139 ev_start (EV_A_ (W)w, ++asynccnt); 4259 ev_start (EV_A_ (W)w, ++asynccnt);
… …
3166 4286
3167void 4287void
3168ev_async_send (EV_P_ ev_async *w) 4288ev_async_send (EV_P_ ev_async *w)
3169{ 4289{
3170 w->sent = 1; 4290 w->sent = 1;
3171 evpipe_write (EV_A_ &gotasync); 4291 evpipe_write (EV_A_ &async_pending);
3172} 4292}
3173#endif 4293#endif
3174 4294
3175/*****************************************************************************/ 4295/*****************************************************************************/
3176 4296
… …
3216{ 4336{
3217 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4337 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3218 4338
3219 if (expect_false (!once)) 4339 if (expect_false (!once))
3220 { 4340 {
3221 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4341 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3222 return; 4342 return;
3223 } 4343 }
3224 4344
3225 once->cb = cb; 4345 once->cb = cb;
3226 once->arg = arg; 4346 once->arg = arg;
… …
3241} 4361}
3242 4362
3243/*****************************************************************************/ 4363/*****************************************************************************/
3244 4364
3245#if EV_WALK_ENABLE 4365#if EV_WALK_ENABLE
3246void 4366void ecb_cold
3247ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4367ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3248{ 4368{
3249 int i, j; 4369 int i, j;
3250 ev_watcher_list *wl, *wn; 4370 ev_watcher_list *wl, *wn;
3251 4371
… …
3295 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4415 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3296#endif 4416#endif
3297 4417
3298#if EV_IDLE_ENABLE 4418#if EV_IDLE_ENABLE
3299 if (types & EV_IDLE) 4419 if (types & EV_IDLE)
3300 for (j = NUMPRI; i--; ) 4420 for (j = NUMPRI; j--; )
3301 for (i = idlecnt [j]; i--; ) 4421 for (i = idlecnt [j]; i--; )
3302 cb (EV_A_ EV_IDLE, idles [j][i]); 4422 cb (EV_A_ EV_IDLE, idles [j][i]);
3303#endif 4423#endif
3304 4424
3305#if EV_FORK_ENABLE 4425#if EV_FORK_ENABLE
… …
3313 if (types & EV_ASYNC) 4433 if (types & EV_ASYNC)
3314 for (i = asynccnt; i--; ) 4434 for (i = asynccnt; i--; )
3315 cb (EV_A_ EV_ASYNC, asyncs [i]); 4435 cb (EV_A_ EV_ASYNC, asyncs [i]);
3316#endif 4436#endif
3317 4437
4438#if EV_PREPARE_ENABLE
3318 if (types & EV_PREPARE) 4439 if (types & EV_PREPARE)
3319 for (i = preparecnt; i--; ) 4440 for (i = preparecnt; i--; )
3320#if EV_EMBED_ENABLE 4441# if EV_EMBED_ENABLE
3321 if (ev_cb (prepares [i]) != embed_prepare_cb) 4442 if (ev_cb (prepares [i]) != embed_prepare_cb)
3322#endif 4443# endif
3323 cb (EV_A_ EV_PREPARE, prepares [i]); 4444 cb (EV_A_ EV_PREPARE, prepares [i]);
4445#endif
3324 4446
4447#if EV_CHECK_ENABLE
3325 if (types & EV_CHECK) 4448 if (types & EV_CHECK)
3326 for (i = checkcnt; i--; ) 4449 for (i = checkcnt; i--; )
3327 cb (EV_A_ EV_CHECK, checks [i]); 4450 cb (EV_A_ EV_CHECK, checks [i]);
4451#endif
3328 4452
4453#if EV_SIGNAL_ENABLE
3329 if (types & EV_SIGNAL) 4454 if (types & EV_SIGNAL)
3330 for (i = 0; i < signalmax; ++i) 4455 for (i = 0; i < EV_NSIG - 1; ++i)
3331 for (wl = signals [i].head; wl; ) 4456 for (wl = signals [i].head; wl; )
3332 { 4457 {
3333 wn = wl->next; 4458 wn = wl->next;
3334 cb (EV_A_ EV_SIGNAL, wl); 4459 cb (EV_A_ EV_SIGNAL, wl);
3335 wl = wn; 4460 wl = wn;
3336 } 4461 }
4462#endif
3337 4463
4464#if EV_CHILD_ENABLE
3338 if (types & EV_CHILD) 4465 if (types & EV_CHILD)
3339 for (i = EV_PID_HASHSIZE; i--; ) 4466 for (i = (EV_PID_HASHSIZE); i--; )
3340 for (wl = childs [i]; wl; ) 4467 for (wl = childs [i]; wl; )
3341 { 4468 {
3342 wn = wl->next; 4469 wn = wl->next;
3343 cb (EV_A_ EV_CHILD, wl); 4470 cb (EV_A_ EV_CHILD, wl);
3344 wl = wn; 4471 wl = wn;
3345 } 4472 }
4473#endif
3346/* EV_STAT 0x00001000 /* stat data changed */ 4474/* EV_STAT 0x00001000 /* stat data changed */
3347/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4475/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3348} 4476}
3349#endif 4477#endif
3350 4478
3351#if EV_MULTIPLICITY 4479#if EV_MULTIPLICITY
3352 #include "ev_wrap.h" 4480 #include "ev_wrap.h"
3353#endif 4481#endif
3354 4482
3355#ifdef __cplusplus
3356}
3357#endif
3358

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