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Comparing libev/ev.c (file contents):
Revision 1.302 by root, Thu Jul 16 15:08:08 2009 UTC vs.
Revision 1.436 by root, Tue May 29 20:44:39 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) 2007,2008,2009,2010,2011,2012 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
62# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
63# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
64# endif 66# endif
65 67
66# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
67# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
77# ifndef EV_USE_REALTIME 79# ifndef EV_USE_REALTIME
78# define EV_USE_REALTIME 0 80# define EV_USE_REALTIME 0
79# endif 81# endif
80# endif 82# endif
81 83
84# if HAVE_NANOSLEEP
82# ifndef EV_USE_NANOSLEEP 85# ifndef EV_USE_NANOSLEEP
83# if HAVE_NANOSLEEP
84# define EV_USE_NANOSLEEP 1 86# define EV_USE_NANOSLEEP EV_FEATURE_OS
87# endif
85# else 88# else
89# undef EV_USE_NANOSLEEP
86# define EV_USE_NANOSLEEP 0 90# define EV_USE_NANOSLEEP 0
91# endif
92
93# if HAVE_SELECT && HAVE_SYS_SELECT_H
94# ifndef EV_USE_SELECT
95# define EV_USE_SELECT EV_FEATURE_BACKENDS
87# endif 96# endif
97# else
98# undef EV_USE_SELECT
99# define EV_USE_SELECT 0
88# endif 100# endif
89 101
102# if HAVE_POLL && HAVE_POLL_H
90# ifndef EV_USE_SELECT 103# ifndef EV_USE_POLL
91# if HAVE_SELECT && HAVE_SYS_SELECT_H 104# define EV_USE_POLL EV_FEATURE_BACKENDS
92# define EV_USE_SELECT 1
93# else
94# define EV_USE_SELECT 0
95# endif 105# endif
96# endif
97
98# ifndef EV_USE_POLL
99# if HAVE_POLL && HAVE_POLL_H
100# define EV_USE_POLL 1
101# else 106# else
107# undef EV_USE_POLL
102# define EV_USE_POLL 0 108# define EV_USE_POLL 0
103# endif
104# endif 109# endif
105 110
106# ifndef EV_USE_EPOLL
107# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 111# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
108# define EV_USE_EPOLL 1 112# ifndef EV_USE_EPOLL
109# else 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
110# define EV_USE_EPOLL 0
111# endif 114# endif
115# else
116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0
112# endif 118# endif
113 119
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
114# ifndef EV_USE_KQUEUE 121# ifndef EV_USE_KQUEUE
115# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
116# define EV_USE_KQUEUE 1
117# else
118# define EV_USE_KQUEUE 0
119# endif 123# endif
124# else
125# undef EV_USE_KQUEUE
126# define EV_USE_KQUEUE 0
120# endif 127# endif
121 128
122# ifndef EV_USE_PORT
123# if HAVE_PORT_H && HAVE_PORT_CREATE 129# if HAVE_PORT_H && HAVE_PORT_CREATE
124# define EV_USE_PORT 1 130# ifndef EV_USE_PORT
125# else 131# define EV_USE_PORT EV_FEATURE_BACKENDS
126# define EV_USE_PORT 0
127# endif 132# endif
133# else
134# undef EV_USE_PORT
135# define EV_USE_PORT 0
128# endif 136# endif
129 137
130# ifndef EV_USE_INOTIFY
131# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 138# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
132# define EV_USE_INOTIFY 1 139# ifndef EV_USE_INOTIFY
133# else
134# define EV_USE_INOTIFY 0 140# define EV_USE_INOTIFY EV_FEATURE_OS
135# endif 141# endif
142# else
143# undef EV_USE_INOTIFY
144# define EV_USE_INOTIFY 0
136# endif 145# endif
137 146
147# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
138# ifndef EV_USE_EVENTFD 148# ifndef EV_USE_SIGNALFD
139# if HAVE_EVENTFD 149# define EV_USE_SIGNALFD EV_FEATURE_OS
140# define EV_USE_EVENTFD 1
141# else
142# define EV_USE_EVENTFD 0
143# endif 150# endif
151# else
152# undef EV_USE_SIGNALFD
153# define EV_USE_SIGNALFD 0
154# endif
155
156# if HAVE_EVENTFD
157# ifndef EV_USE_EVENTFD
158# define EV_USE_EVENTFD EV_FEATURE_OS
159# endif
160# else
161# undef EV_USE_EVENTFD
162# define EV_USE_EVENTFD 0
144# endif 163# endif
145 164
146#endif 165#endif
147 166
148#include <math.h>
149#include <stdlib.h> 167#include <stdlib.h>
168#include <string.h>
150#include <fcntl.h> 169#include <fcntl.h>
151#include <stddef.h> 170#include <stddef.h>
152 171
153#include <stdio.h> 172#include <stdio.h>
154 173
155#include <assert.h> 174#include <assert.h>
156#include <errno.h> 175#include <errno.h>
157#include <sys/types.h> 176#include <sys/types.h>
158#include <time.h> 177#include <time.h>
178#include <limits.h>
159 179
160#include <signal.h> 180#include <signal.h>
161 181
162#ifdef EV_H 182#ifdef EV_H
163# include EV_H 183# include EV_H
164#else 184#else
165# include "ev.h" 185# include "ev.h"
186#endif
187
188#if EV_NO_THREADS
189# undef EV_NO_SMP
190# define EV_NO_SMP 1
191# undef ECB_NO_THREADS
192# define ECB_NO_THREADS 1
193#endif
194#if EV_NO_SMP
195# undef EV_NO_SMP
196# define ECB_NO_SMP 1
166#endif 197#endif
167 198
168#ifndef _WIN32 199#ifndef _WIN32
169# include <sys/time.h> 200# include <sys/time.h>
170# include <sys/wait.h> 201# include <sys/wait.h>
171# include <unistd.h> 202# include <unistd.h>
172#else 203#else
173# include <io.h> 204# include <io.h>
174# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
206# include <winsock2.h>
175# include <windows.h> 207# include <windows.h>
176# ifndef EV_SELECT_IS_WINSOCKET 208# ifndef EV_SELECT_IS_WINSOCKET
177# define EV_SELECT_IS_WINSOCKET 1 209# define EV_SELECT_IS_WINSOCKET 1
178# endif 210# endif
211# undef EV_AVOID_STDIO
179#endif 212#endif
213
214/* OS X, in its infinite idiocy, actually HARDCODES
215 * a limit of 1024 into their select. Where people have brains,
216 * OS X engineers apparently have a vacuum. Or maybe they were
217 * ordered to have a vacuum, or they do anything for money.
218 * This might help. Or not.
219 */
220#define _DARWIN_UNLIMITED_SELECT 1
180 221
181/* this block tries to deduce configuration from header-defined symbols and defaults */ 222/* this block tries to deduce configuration from header-defined symbols and defaults */
223
224/* try to deduce the maximum number of signals on this platform */
225#if defined EV_NSIG
226/* use what's provided */
227#elif defined NSIG
228# define EV_NSIG (NSIG)
229#elif defined _NSIG
230# define EV_NSIG (_NSIG)
231#elif defined SIGMAX
232# define EV_NSIG (SIGMAX+1)
233#elif defined SIG_MAX
234# define EV_NSIG (SIG_MAX+1)
235#elif defined _SIG_MAX
236# define EV_NSIG (_SIG_MAX+1)
237#elif defined MAXSIG
238# define EV_NSIG (MAXSIG+1)
239#elif defined MAX_SIG
240# define EV_NSIG (MAX_SIG+1)
241#elif defined SIGARRAYSIZE
242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
243#elif defined _sys_nsig
244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
245#else
246# error "unable to find value for NSIG, please report"
247/* to make it compile regardless, just remove the above line, */
248/* but consider reporting it, too! :) */
249# define EV_NSIG 65
250#endif
251
252#ifndef EV_USE_FLOOR
253# define EV_USE_FLOOR 0
254#endif
182 255
183#ifndef EV_USE_CLOCK_SYSCALL 256#ifndef EV_USE_CLOCK_SYSCALL
184# if __linux && __GLIBC__ >= 2 257# if __linux && __GLIBC__ >= 2
185# define EV_USE_CLOCK_SYSCALL 1 258# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
186# else 259# else
187# define EV_USE_CLOCK_SYSCALL 0 260# define EV_USE_CLOCK_SYSCALL 0
188# endif 261# endif
189#endif 262#endif
190 263
191#ifndef EV_USE_MONOTONIC 264#ifndef EV_USE_MONOTONIC
192# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 265# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
193# define EV_USE_MONOTONIC 1 266# define EV_USE_MONOTONIC EV_FEATURE_OS
194# else 267# else
195# define EV_USE_MONOTONIC 0 268# define EV_USE_MONOTONIC 0
196# endif 269# endif
197#endif 270#endif
198 271
… …
200# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 273# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
201#endif 274#endif
202 275
203#ifndef EV_USE_NANOSLEEP 276#ifndef EV_USE_NANOSLEEP
204# if _POSIX_C_SOURCE >= 199309L 277# if _POSIX_C_SOURCE >= 199309L
205# define EV_USE_NANOSLEEP 1 278# define EV_USE_NANOSLEEP EV_FEATURE_OS
206# else 279# else
207# define EV_USE_NANOSLEEP 0 280# define EV_USE_NANOSLEEP 0
208# endif 281# endif
209#endif 282#endif
210 283
211#ifndef EV_USE_SELECT 284#ifndef EV_USE_SELECT
212# define EV_USE_SELECT 1 285# define EV_USE_SELECT EV_FEATURE_BACKENDS
213#endif 286#endif
214 287
215#ifndef EV_USE_POLL 288#ifndef EV_USE_POLL
216# ifdef _WIN32 289# ifdef _WIN32
217# define EV_USE_POLL 0 290# define EV_USE_POLL 0
218# else 291# else
219# define EV_USE_POLL 1 292# define EV_USE_POLL EV_FEATURE_BACKENDS
220# endif 293# endif
221#endif 294#endif
222 295
223#ifndef EV_USE_EPOLL 296#ifndef EV_USE_EPOLL
224# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 297# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
225# define EV_USE_EPOLL 1 298# define EV_USE_EPOLL EV_FEATURE_BACKENDS
226# else 299# else
227# define EV_USE_EPOLL 0 300# define EV_USE_EPOLL 0
228# endif 301# endif
229#endif 302#endif
230 303
… …
236# define EV_USE_PORT 0 309# define EV_USE_PORT 0
237#endif 310#endif
238 311
239#ifndef EV_USE_INOTIFY 312#ifndef EV_USE_INOTIFY
240# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 313# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
241# define EV_USE_INOTIFY 1 314# define EV_USE_INOTIFY EV_FEATURE_OS
242# else 315# else
243# define EV_USE_INOTIFY 0 316# define EV_USE_INOTIFY 0
244# endif 317# endif
245#endif 318#endif
246 319
247#ifndef EV_PID_HASHSIZE 320#ifndef EV_PID_HASHSIZE
248# if EV_MINIMAL 321# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
249# define EV_PID_HASHSIZE 1
250# else
251# define EV_PID_HASHSIZE 16
252# endif
253#endif 322#endif
254 323
255#ifndef EV_INOTIFY_HASHSIZE 324#ifndef EV_INOTIFY_HASHSIZE
256# if EV_MINIMAL 325# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
257# define EV_INOTIFY_HASHSIZE 1
258# else
259# define EV_INOTIFY_HASHSIZE 16
260# endif
261#endif 326#endif
262 327
263#ifndef EV_USE_EVENTFD 328#ifndef EV_USE_EVENTFD
264# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 329# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
265# define EV_USE_EVENTFD 1 330# define EV_USE_EVENTFD EV_FEATURE_OS
266# else 331# else
267# define EV_USE_EVENTFD 0 332# define EV_USE_EVENTFD 0
333# endif
334#endif
335
336#ifndef EV_USE_SIGNALFD
337# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
338# define EV_USE_SIGNALFD EV_FEATURE_OS
339# else
340# define EV_USE_SIGNALFD 0
268# endif 341# endif
269#endif 342#endif
270 343
271#if 0 /* debugging */ 344#if 0 /* debugging */
272# define EV_VERIFY 3 345# define EV_VERIFY 3
273# define EV_USE_4HEAP 1 346# define EV_USE_4HEAP 1
274# define EV_HEAP_CACHE_AT 1 347# define EV_HEAP_CACHE_AT 1
275#endif 348#endif
276 349
277#ifndef EV_VERIFY 350#ifndef EV_VERIFY
278# define EV_VERIFY !EV_MINIMAL 351# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
279#endif 352#endif
280 353
281#ifndef EV_USE_4HEAP 354#ifndef EV_USE_4HEAP
282# define EV_USE_4HEAP !EV_MINIMAL 355# define EV_USE_4HEAP EV_FEATURE_DATA
283#endif 356#endif
284 357
285#ifndef EV_HEAP_CACHE_AT 358#ifndef EV_HEAP_CACHE_AT
286# define EV_HEAP_CACHE_AT !EV_MINIMAL 359# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
287#endif 360#endif
288 361
289/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 362/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
290/* which makes programs even slower. might work on other unices, too. */ 363/* which makes programs even slower. might work on other unices, too. */
291#if EV_USE_CLOCK_SYSCALL 364#if EV_USE_CLOCK_SYSCALL
292# include <syscall.h> 365# include <sys/syscall.h>
293# ifdef SYS_clock_gettime 366# ifdef SYS_clock_gettime
294# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 367# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
295# undef EV_USE_MONOTONIC 368# undef EV_USE_MONOTONIC
296# define EV_USE_MONOTONIC 1 369# define EV_USE_MONOTONIC 1
297# else 370# else
… …
300# endif 373# endif
301#endif 374#endif
302 375
303/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 376/* this block fixes any misconfiguration where we know we run into trouble otherwise */
304 377
378#ifdef _AIX
379/* AIX has a completely broken poll.h header */
380# undef EV_USE_POLL
381# define EV_USE_POLL 0
382#endif
383
305#ifndef CLOCK_MONOTONIC 384#ifndef CLOCK_MONOTONIC
306# undef EV_USE_MONOTONIC 385# undef EV_USE_MONOTONIC
307# define EV_USE_MONOTONIC 0 386# define EV_USE_MONOTONIC 0
308#endif 387#endif
309 388
… …
316# undef EV_USE_INOTIFY 395# undef EV_USE_INOTIFY
317# define EV_USE_INOTIFY 0 396# define EV_USE_INOTIFY 0
318#endif 397#endif
319 398
320#if !EV_USE_NANOSLEEP 399#if !EV_USE_NANOSLEEP
321# ifndef _WIN32 400/* hp-ux has it in sys/time.h, which we unconditionally include above */
401# if !defined _WIN32 && !defined __hpux
322# include <sys/select.h> 402# include <sys/select.h>
323# endif 403# endif
324#endif 404#endif
325 405
326#if EV_USE_INOTIFY 406#if EV_USE_INOTIFY
327# include <sys/utsname.h>
328# include <sys/statfs.h> 407# include <sys/statfs.h>
329# include <sys/inotify.h> 408# include <sys/inotify.h>
330/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 409/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
331# ifndef IN_DONT_FOLLOW 410# ifndef IN_DONT_FOLLOW
332# undef EV_USE_INOTIFY 411# undef EV_USE_INOTIFY
333# define EV_USE_INOTIFY 0 412# define EV_USE_INOTIFY 0
334# endif 413# endif
335#endif 414#endif
336 415
337#if EV_SELECT_IS_WINSOCKET
338# include <winsock.h>
339#endif
340
341#if EV_USE_EVENTFD 416#if EV_USE_EVENTFD
342/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 417/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
343# include <stdint.h> 418# include <stdint.h>
344# ifdef __cplusplus 419# ifndef EFD_NONBLOCK
345extern "C" { 420# define EFD_NONBLOCK O_NONBLOCK
346# endif 421# endif
347int eventfd (unsigned int initval, int flags); 422# ifndef EFD_CLOEXEC
348# ifdef __cplusplus 423# ifdef O_CLOEXEC
349} 424# define EFD_CLOEXEC O_CLOEXEC
425# else
426# define EFD_CLOEXEC 02000000
427# endif
350# endif 428# endif
429EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
430#endif
431
432#if EV_USE_SIGNALFD
433/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
434# include <stdint.h>
435# ifndef SFD_NONBLOCK
436# define SFD_NONBLOCK O_NONBLOCK
437# endif
438# ifndef SFD_CLOEXEC
439# ifdef O_CLOEXEC
440# define SFD_CLOEXEC O_CLOEXEC
441# else
442# define SFD_CLOEXEC 02000000
443# endif
444# endif
445EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
446
447struct signalfd_siginfo
448{
449 uint32_t ssi_signo;
450 char pad[128 - sizeof (uint32_t)];
451};
351#endif 452#endif
352 453
353/**/ 454/**/
354 455
355#if EV_VERIFY >= 3 456#if EV_VERIFY >= 3
356# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 457# define EV_FREQUENT_CHECK ev_verify (EV_A)
357#else 458#else
358# define EV_FREQUENT_CHECK do { } while (0) 459# define EV_FREQUENT_CHECK do { } while (0)
359#endif 460#endif
360 461
361/* 462/*
362 * This is used to avoid floating point rounding problems. 463 * This is used to work around floating point rounding problems.
363 * It is added to ev_rt_now when scheduling periodics
364 * to ensure progress, time-wise, even when rounding
365 * errors are against us.
366 * This value is good at least till the year 4000. 464 * This value is good at least till the year 4000.
367 * Better solutions welcome.
368 */ 465 */
369#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 466#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
467/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
370 468
371#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 469#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
372#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 470#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
373/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
374 471
472#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
473#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
474
475/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
476/* ECB.H BEGIN */
477/*
478 * libecb - http://software.schmorp.de/pkg/libecb
479 *
480 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de>
481 * Copyright (©) 2011 Emanuele Giaquinta
482 * All rights reserved.
483 *
484 * Redistribution and use in source and binary forms, with or without modifica-
485 * tion, are permitted provided that the following conditions are met:
486 *
487 * 1. Redistributions of source code must retain the above copyright notice,
488 * this list of conditions and the following disclaimer.
489 *
490 * 2. Redistributions in binary form must reproduce the above copyright
491 * notice, this list of conditions and the following disclaimer in the
492 * documentation and/or other materials provided with the distribution.
493 *
494 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
495 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
496 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
497 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
498 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
499 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
500 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
501 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
502 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
503 * OF THE POSSIBILITY OF SUCH DAMAGE.
504 */
505
506#ifndef ECB_H
507#define ECB_H
508
509#ifdef _WIN32
510 typedef signed char int8_t;
511 typedef unsigned char uint8_t;
512 typedef signed short int16_t;
513 typedef unsigned short uint16_t;
514 typedef signed int int32_t;
515 typedef unsigned int uint32_t;
375#if __GNUC__ >= 4 516 #if __GNUC__
376# define expect(expr,value) __builtin_expect ((expr),(value)) 517 typedef signed long long int64_t;
377# define noinline __attribute__ ((noinline)) 518 typedef unsigned long long uint64_t;
519 #else /* _MSC_VER || __BORLANDC__ */
520 typedef signed __int64 int64_t;
521 typedef unsigned __int64 uint64_t;
522 #endif
378#else 523#else
379# define expect(expr,value) (expr) 524 #include <inttypes.h>
380# define noinline
381# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
382# define inline
383# endif 525#endif
526
527/* many compilers define _GNUC_ to some versions but then only implement
528 * what their idiot authors think are the "more important" extensions,
529 * causing enormous grief in return for some better fake benchmark numbers.
530 * or so.
531 * we try to detect these and simply assume they are not gcc - if they have
532 * an issue with that they should have done it right in the first place.
533 */
534#ifndef ECB_GCC_VERSION
535 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
536 #define ECB_GCC_VERSION(major,minor) 0
537 #else
538 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
384#endif 539 #endif
540#endif
385 541
542/*****************************************************************************/
543
544/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
545/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
546
547#if ECB_NO_THREADS
548# define ECB_NO_SMP 1
549#endif
550
551#if ECB_NO_THREADS || ECB_NO_SMP
552 #define ECB_MEMORY_FENCE do { } while (0)
553#endif
554
555#ifndef ECB_MEMORY_FENCE
556 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
557 #if __i386 || __i386__
558 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
559 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */
560 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */
561 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
562 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
563 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
564 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */
565 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
566 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
567 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
568 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
569 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
570 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
571 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
572 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
573 #elif __sparc || __sparc__
574 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad | " : : : "memory")
575 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
576 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
577 #elif defined __s390__ || defined __s390x__
578 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
579 #elif defined __mips__
580 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
581 #elif defined __alpha__
582 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
583 #endif
584 #endif
585#endif
586
587#ifndef ECB_MEMORY_FENCE
588 #if ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
589 #define ECB_MEMORY_FENCE __sync_synchronize ()
590 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */
591 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */
592 #elif _MSC_VER >= 1400 /* VC++ 2005 */
593 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
594 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
595 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
596 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
597 #elif defined _WIN32
598 #include <WinNT.h>
599 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
600 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
601 #include <mbarrier.h>
602 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
603 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
604 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
605 #elif __xlC__
606 #define ECB_MEMORY_FENCE __sync ()
607 #endif
608#endif
609
610#ifndef ECB_MEMORY_FENCE
611 #if !ECB_AVOID_PTHREADS
612 /*
613 * if you get undefined symbol references to pthread_mutex_lock,
614 * or failure to find pthread.h, then you should implement
615 * the ECB_MEMORY_FENCE operations for your cpu/compiler
616 * OR provide pthread.h and link against the posix thread library
617 * of your system.
618 */
619 #include <pthread.h>
620 #define ECB_NEEDS_PTHREADS 1
621 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
622
623 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
624 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
625 #endif
626#endif
627
628#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
629 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
630#endif
631
632#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
633 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
634#endif
635
636/*****************************************************************************/
637
638#define ECB_C99 (__STDC_VERSION__ >= 199901L)
639
640#if __cplusplus
641 #define ecb_inline static inline
642#elif ECB_GCC_VERSION(2,5)
643 #define ecb_inline static __inline__
644#elif ECB_C99
645 #define ecb_inline static inline
646#else
647 #define ecb_inline static
648#endif
649
650#if ECB_GCC_VERSION(3,3)
651 #define ecb_restrict __restrict__
652#elif ECB_C99
653 #define ecb_restrict restrict
654#else
655 #define ecb_restrict
656#endif
657
658typedef int ecb_bool;
659
660#define ECB_CONCAT_(a, b) a ## b
661#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
662#define ECB_STRINGIFY_(a) # a
663#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
664
665#define ecb_function_ ecb_inline
666
667#if ECB_GCC_VERSION(3,1)
668 #define ecb_attribute(attrlist) __attribute__(attrlist)
669 #define ecb_is_constant(expr) __builtin_constant_p (expr)
670 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
671 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
672#else
673 #define ecb_attribute(attrlist)
674 #define ecb_is_constant(expr) 0
675 #define ecb_expect(expr,value) (expr)
676 #define ecb_prefetch(addr,rw,locality)
677#endif
678
679/* no emulation for ecb_decltype */
680#if ECB_GCC_VERSION(4,5)
681 #define ecb_decltype(x) __decltype(x)
682#elif ECB_GCC_VERSION(3,0)
683 #define ecb_decltype(x) __typeof(x)
684#endif
685
686#define ecb_noinline ecb_attribute ((__noinline__))
687#define ecb_noreturn ecb_attribute ((__noreturn__))
688#define ecb_unused ecb_attribute ((__unused__))
689#define ecb_const ecb_attribute ((__const__))
690#define ecb_pure ecb_attribute ((__pure__))
691
692#if ECB_GCC_VERSION(4,3)
693 #define ecb_artificial ecb_attribute ((__artificial__))
694 #define ecb_hot ecb_attribute ((__hot__))
695 #define ecb_cold ecb_attribute ((__cold__))
696#else
697 #define ecb_artificial
698 #define ecb_hot
699 #define ecb_cold
700#endif
701
702/* put around conditional expressions if you are very sure that the */
703/* expression is mostly true or mostly false. note that these return */
704/* booleans, not the expression. */
386#define expect_false(expr) expect ((expr) != 0, 0) 705#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
387#define expect_true(expr) expect ((expr) != 0, 1) 706#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
707/* for compatibility to the rest of the world */
708#define ecb_likely(expr) ecb_expect_true (expr)
709#define ecb_unlikely(expr) ecb_expect_false (expr)
710
711/* count trailing zero bits and count # of one bits */
712#if ECB_GCC_VERSION(3,4)
713 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
714 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
715 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
716 #define ecb_ctz32(x) __builtin_ctz (x)
717 #define ecb_ctz64(x) __builtin_ctzll (x)
718 #define ecb_popcount32(x) __builtin_popcount (x)
719 /* no popcountll */
720#else
721 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
722 ecb_function_ int
723 ecb_ctz32 (uint32_t x)
724 {
725 int r = 0;
726
727 x &= ~x + 1; /* this isolates the lowest bit */
728
729#if ECB_branchless_on_i386
730 r += !!(x & 0xaaaaaaaa) << 0;
731 r += !!(x & 0xcccccccc) << 1;
732 r += !!(x & 0xf0f0f0f0) << 2;
733 r += !!(x & 0xff00ff00) << 3;
734 r += !!(x & 0xffff0000) << 4;
735#else
736 if (x & 0xaaaaaaaa) r += 1;
737 if (x & 0xcccccccc) r += 2;
738 if (x & 0xf0f0f0f0) r += 4;
739 if (x & 0xff00ff00) r += 8;
740 if (x & 0xffff0000) r += 16;
741#endif
742
743 return r;
744 }
745
746 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
747 ecb_function_ int
748 ecb_ctz64 (uint64_t x)
749 {
750 int shift = x & 0xffffffffU ? 0 : 32;
751 return ecb_ctz32 (x >> shift) + shift;
752 }
753
754 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
755 ecb_function_ int
756 ecb_popcount32 (uint32_t x)
757 {
758 x -= (x >> 1) & 0x55555555;
759 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
760 x = ((x >> 4) + x) & 0x0f0f0f0f;
761 x *= 0x01010101;
762
763 return x >> 24;
764 }
765
766 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
767 ecb_function_ int ecb_ld32 (uint32_t x)
768 {
769 int r = 0;
770
771 if (x >> 16) { x >>= 16; r += 16; }
772 if (x >> 8) { x >>= 8; r += 8; }
773 if (x >> 4) { x >>= 4; r += 4; }
774 if (x >> 2) { x >>= 2; r += 2; }
775 if (x >> 1) { r += 1; }
776
777 return r;
778 }
779
780 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
781 ecb_function_ int ecb_ld64 (uint64_t x)
782 {
783 int r = 0;
784
785 if (x >> 32) { x >>= 32; r += 32; }
786
787 return r + ecb_ld32 (x);
788 }
789#endif
790
791ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
792ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
793{
794 return ( (x * 0x0802U & 0x22110U)
795 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
796}
797
798ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
799ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
800{
801 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
802 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
803 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
804 x = ( x >> 8 ) | ( x << 8);
805
806 return x;
807}
808
809ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
810ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
811{
812 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
813 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
814 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
815 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
816 x = ( x >> 16 ) | ( x << 16);
817
818 return x;
819}
820
821/* popcount64 is only available on 64 bit cpus as gcc builtin */
822/* so for this version we are lazy */
823ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
824ecb_function_ int
825ecb_popcount64 (uint64_t x)
826{
827 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
828}
829
830ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
831ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
832ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
833ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
834ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
835ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
836ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
837ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
838
839ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
840ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
841ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
842ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
843ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
844ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
845ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
846ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
847
848#if ECB_GCC_VERSION(4,3)
849 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
850 #define ecb_bswap32(x) __builtin_bswap32 (x)
851 #define ecb_bswap64(x) __builtin_bswap64 (x)
852#else
853 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
854 ecb_function_ uint16_t
855 ecb_bswap16 (uint16_t x)
856 {
857 return ecb_rotl16 (x, 8);
858 }
859
860 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
861 ecb_function_ uint32_t
862 ecb_bswap32 (uint32_t x)
863 {
864 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
865 }
866
867 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
868 ecb_function_ uint64_t
869 ecb_bswap64 (uint64_t x)
870 {
871 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
872 }
873#endif
874
875#if ECB_GCC_VERSION(4,5)
876 #define ecb_unreachable() __builtin_unreachable ()
877#else
878 /* this seems to work fine, but gcc always emits a warning for it :/ */
879 ecb_inline void ecb_unreachable (void) ecb_noreturn;
880 ecb_inline void ecb_unreachable (void) { }
881#endif
882
883/* try to tell the compiler that some condition is definitely true */
884#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
885
886ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
887ecb_inline unsigned char
888ecb_byteorder_helper (void)
889{
890 const uint32_t u = 0x11223344;
891 return *(unsigned char *)&u;
892}
893
894ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
895ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
896ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
897ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
898
899#if ECB_GCC_VERSION(3,0) || ECB_C99
900 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
901#else
902 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
903#endif
904
905#if __cplusplus
906 template<typename T>
907 static inline T ecb_div_rd (T val, T div)
908 {
909 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
910 }
911 template<typename T>
912 static inline T ecb_div_ru (T val, T div)
913 {
914 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
915 }
916#else
917 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
918 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
919#endif
920
921#if ecb_cplusplus_does_not_suck
922 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
923 template<typename T, int N>
924 static inline int ecb_array_length (const T (&arr)[N])
925 {
926 return N;
927 }
928#else
929 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
930#endif
931
932#endif
933
934/* ECB.H END */
935
936#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
937/* if your architecture doesn't need memory fences, e.g. because it is
938 * single-cpu/core, or if you use libev in a project that doesn't use libev
939 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
940 * libev, in which cases the memory fences become nops.
941 * alternatively, you can remove this #error and link against libpthread,
942 * which will then provide the memory fences.
943 */
944# error "memory fences not defined for your architecture, please report"
945#endif
946
947#ifndef ECB_MEMORY_FENCE
948# define ECB_MEMORY_FENCE do { } while (0)
949# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
950# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
951#endif
952
953#define expect_false(cond) ecb_expect_false (cond)
954#define expect_true(cond) ecb_expect_true (cond)
955#define noinline ecb_noinline
956
388#define inline_size static inline 957#define inline_size ecb_inline
389 958
390#if EV_MINIMAL 959#if EV_FEATURE_CODE
960# define inline_speed ecb_inline
961#else
391# define inline_speed static noinline 962# define inline_speed static noinline
392#else
393# define inline_speed static inline
394#endif 963#endif
395 964
396#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 965#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
397 966
398#if EV_MINPRI == EV_MAXPRI 967#if EV_MINPRI == EV_MAXPRI
… …
411#define ev_active(w) ((W)(w))->active 980#define ev_active(w) ((W)(w))->active
412#define ev_at(w) ((WT)(w))->at 981#define ev_at(w) ((WT)(w))->at
413 982
414#if EV_USE_REALTIME 983#if EV_USE_REALTIME
415/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 984/* sig_atomic_t is used to avoid per-thread variables or locking but still */
416/* giving it a reasonably high chance of working on typical architetcures */ 985/* giving it a reasonably high chance of working on typical architectures */
417static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 986static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
418#endif 987#endif
419 988
420#if EV_USE_MONOTONIC 989#if EV_USE_MONOTONIC
421static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 990static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
422#endif 991#endif
423 992
993#ifndef EV_FD_TO_WIN32_HANDLE
994# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
995#endif
996#ifndef EV_WIN32_HANDLE_TO_FD
997# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
998#endif
999#ifndef EV_WIN32_CLOSE_FD
1000# define EV_WIN32_CLOSE_FD(fd) close (fd)
1001#endif
1002
424#ifdef _WIN32 1003#ifdef _WIN32
425# include "ev_win32.c" 1004# include "ev_win32.c"
426#endif 1005#endif
427 1006
428/*****************************************************************************/ 1007/*****************************************************************************/
429 1008
1009/* define a suitable floor function (only used by periodics atm) */
1010
1011#if EV_USE_FLOOR
1012# include <math.h>
1013# define ev_floor(v) floor (v)
1014#else
1015
1016#include <float.h>
1017
1018/* a floor() replacement function, should be independent of ev_tstamp type */
1019static ev_tstamp noinline
1020ev_floor (ev_tstamp v)
1021{
1022 /* the choice of shift factor is not terribly important */
1023#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1024 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1025#else
1026 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1027#endif
1028
1029 /* argument too large for an unsigned long? */
1030 if (expect_false (v >= shift))
1031 {
1032 ev_tstamp f;
1033
1034 if (v == v - 1.)
1035 return v; /* very large number */
1036
1037 f = shift * ev_floor (v * (1. / shift));
1038 return f + ev_floor (v - f);
1039 }
1040
1041 /* special treatment for negative args? */
1042 if (expect_false (v < 0.))
1043 {
1044 ev_tstamp f = -ev_floor (-v);
1045
1046 return f - (f == v ? 0 : 1);
1047 }
1048
1049 /* fits into an unsigned long */
1050 return (unsigned long)v;
1051}
1052
1053#endif
1054
1055/*****************************************************************************/
1056
1057#ifdef __linux
1058# include <sys/utsname.h>
1059#endif
1060
1061static unsigned int noinline ecb_cold
1062ev_linux_version (void)
1063{
1064#ifdef __linux
1065 unsigned int v = 0;
1066 struct utsname buf;
1067 int i;
1068 char *p = buf.release;
1069
1070 if (uname (&buf))
1071 return 0;
1072
1073 for (i = 3+1; --i; )
1074 {
1075 unsigned int c = 0;
1076
1077 for (;;)
1078 {
1079 if (*p >= '0' && *p <= '9')
1080 c = c * 10 + *p++ - '0';
1081 else
1082 {
1083 p += *p == '.';
1084 break;
1085 }
1086 }
1087
1088 v = (v << 8) | c;
1089 }
1090
1091 return v;
1092#else
1093 return 0;
1094#endif
1095}
1096
1097/*****************************************************************************/
1098
1099#if EV_AVOID_STDIO
1100static void noinline ecb_cold
1101ev_printerr (const char *msg)
1102{
1103 write (STDERR_FILENO, msg, strlen (msg));
1104}
1105#endif
1106
430static void (*syserr_cb)(const char *msg); 1107static void (*syserr_cb)(const char *msg) EV_THROW;
431 1108
432void 1109void ecb_cold
433ev_set_syserr_cb (void (*cb)(const char *msg)) 1110ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
434{ 1111{
435 syserr_cb = cb; 1112 syserr_cb = cb;
436} 1113}
437 1114
438static void noinline 1115static void noinline ecb_cold
439ev_syserr (const char *msg) 1116ev_syserr (const char *msg)
440{ 1117{
441 if (!msg) 1118 if (!msg)
442 msg = "(libev) system error"; 1119 msg = "(libev) system error";
443 1120
444 if (syserr_cb) 1121 if (syserr_cb)
445 syserr_cb (msg); 1122 syserr_cb (msg);
446 else 1123 else
447 { 1124 {
1125#if EV_AVOID_STDIO
1126 ev_printerr (msg);
1127 ev_printerr (": ");
1128 ev_printerr (strerror (errno));
1129 ev_printerr ("\n");
1130#else
448 perror (msg); 1131 perror (msg);
1132#endif
449 abort (); 1133 abort ();
450 } 1134 }
451} 1135}
452 1136
453static void * 1137static void *
454ev_realloc_emul (void *ptr, long size) 1138ev_realloc_emul (void *ptr, long size) EV_THROW
455{ 1139{
1140#if __GLIBC__
1141 return realloc (ptr, size);
1142#else
456 /* some systems, notably openbsd and darwin, fail to properly 1143 /* some systems, notably openbsd and darwin, fail to properly
457 * implement realloc (x, 0) (as required by both ansi c-98 and 1144 * implement realloc (x, 0) (as required by both ansi c-89 and
458 * the single unix specification, so work around them here. 1145 * the single unix specification, so work around them here.
459 */ 1146 */
460 1147
461 if (size) 1148 if (size)
462 return realloc (ptr, size); 1149 return realloc (ptr, size);
463 1150
464 free (ptr); 1151 free (ptr);
465 return 0; 1152 return 0;
1153#endif
466} 1154}
467 1155
468static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1156static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
469 1157
470void 1158void ecb_cold
471ev_set_allocator (void *(*cb)(void *ptr, long size)) 1159ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
472{ 1160{
473 alloc = cb; 1161 alloc = cb;
474} 1162}
475 1163
476inline_speed void * 1164inline_speed void *
… …
478{ 1166{
479 ptr = alloc (ptr, size); 1167 ptr = alloc (ptr, size);
480 1168
481 if (!ptr && size) 1169 if (!ptr && size)
482 { 1170 {
1171#if EV_AVOID_STDIO
1172 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1173#else
483 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1174 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1175#endif
484 abort (); 1176 abort ();
485 } 1177 }
486 1178
487 return ptr; 1179 return ptr;
488} 1180}
… …
504 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1196 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
505 unsigned char unused; 1197 unsigned char unused;
506#if EV_USE_EPOLL 1198#if EV_USE_EPOLL
507 unsigned int egen; /* generation counter to counter epoll bugs */ 1199 unsigned int egen; /* generation counter to counter epoll bugs */
508#endif 1200#endif
509#if EV_SELECT_IS_WINSOCKET 1201#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
510 SOCKET handle; 1202 SOCKET handle;
1203#endif
1204#if EV_USE_IOCP
1205 OVERLAPPED or, ow;
511#endif 1206#endif
512} ANFD; 1207} ANFD;
513 1208
514/* stores the pending event set for a given watcher */ 1209/* stores the pending event set for a given watcher */
515typedef struct 1210typedef struct
… …
557 #undef VAR 1252 #undef VAR
558 }; 1253 };
559 #include "ev_wrap.h" 1254 #include "ev_wrap.h"
560 1255
561 static struct ev_loop default_loop_struct; 1256 static struct ev_loop default_loop_struct;
562 struct ev_loop *ev_default_loop_ptr; 1257 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
563 1258
564#else 1259#else
565 1260
566 ev_tstamp ev_rt_now; 1261 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
567 #define VAR(name,decl) static decl; 1262 #define VAR(name,decl) static decl;
568 #include "ev_vars.h" 1263 #include "ev_vars.h"
569 #undef VAR 1264 #undef VAR
570 1265
571 static int ev_default_loop_ptr; 1266 static int ev_default_loop_ptr;
572 1267
573#endif 1268#endif
574 1269
575#if EV_MINIMAL < 2 1270#if EV_FEATURE_API
576# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1271# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
577# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 1272# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
578# define EV_INVOKE_PENDING invoke_cb (EV_A) 1273# define EV_INVOKE_PENDING invoke_cb (EV_A)
579#else 1274#else
580# define EV_RELEASE_CB (void)0 1275# define EV_RELEASE_CB (void)0
581# define EV_ACQUIRE_CB (void)0 1276# define EV_ACQUIRE_CB (void)0
582# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1277# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
583#endif 1278#endif
584 1279
585#define EVUNLOOP_RECURSE 0x80 1280#define EVBREAK_RECURSE 0x80
586 1281
587/*****************************************************************************/ 1282/*****************************************************************************/
588 1283
589#ifndef EV_HAVE_EV_TIME 1284#ifndef EV_HAVE_EV_TIME
590ev_tstamp 1285ev_tstamp
591ev_time (void) 1286ev_time (void) EV_THROW
592{ 1287{
593#if EV_USE_REALTIME 1288#if EV_USE_REALTIME
594 if (expect_true (have_realtime)) 1289 if (expect_true (have_realtime))
595 { 1290 {
596 struct timespec ts; 1291 struct timespec ts;
… …
620 return ev_time (); 1315 return ev_time ();
621} 1316}
622 1317
623#if EV_MULTIPLICITY 1318#if EV_MULTIPLICITY
624ev_tstamp 1319ev_tstamp
625ev_now (EV_P) 1320ev_now (EV_P) EV_THROW
626{ 1321{
627 return ev_rt_now; 1322 return ev_rt_now;
628} 1323}
629#endif 1324#endif
630 1325
631void 1326void
632ev_sleep (ev_tstamp delay) 1327ev_sleep (ev_tstamp delay) EV_THROW
633{ 1328{
634 if (delay > 0.) 1329 if (delay > 0.)
635 { 1330 {
636#if EV_USE_NANOSLEEP 1331#if EV_USE_NANOSLEEP
637 struct timespec ts; 1332 struct timespec ts;
638 1333
639 ts.tv_sec = (time_t)delay; 1334 EV_TS_SET (ts, delay);
640 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
641
642 nanosleep (&ts, 0); 1335 nanosleep (&ts, 0);
643#elif defined(_WIN32) 1336#elif defined _WIN32
644 Sleep ((unsigned long)(delay * 1e3)); 1337 Sleep ((unsigned long)(delay * 1e3));
645#else 1338#else
646 struct timeval tv; 1339 struct timeval tv;
647 1340
648 tv.tv_sec = (time_t)delay;
649 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
650
651 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1341 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
652 /* something not guaranteed by newer posix versions, but guaranteed */ 1342 /* something not guaranteed by newer posix versions, but guaranteed */
653 /* by older ones */ 1343 /* by older ones */
1344 EV_TV_SET (tv, delay);
654 select (0, 0, 0, 0, &tv); 1345 select (0, 0, 0, 0, &tv);
655#endif 1346#endif
656 } 1347 }
657} 1348}
658 1349
659/*****************************************************************************/ 1350/*****************************************************************************/
660 1351
661#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1352#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
662 1353
663/* find a suitable new size for the given array, */ 1354/* find a suitable new size for the given array, */
664/* hopefully by rounding to a ncie-to-malloc size */ 1355/* hopefully by rounding to a nice-to-malloc size */
665inline_size int 1356inline_size int
666array_nextsize (int elem, int cur, int cnt) 1357array_nextsize (int elem, int cur, int cnt)
667{ 1358{
668 int ncur = cur + 1; 1359 int ncur = cur + 1;
669 1360
670 do 1361 do
671 ncur <<= 1; 1362 ncur <<= 1;
672 while (cnt > ncur); 1363 while (cnt > ncur);
673 1364
674 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1365 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
675 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1366 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
676 { 1367 {
677 ncur *= elem; 1368 ncur *= elem;
678 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1369 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
679 ncur = ncur - sizeof (void *) * 4; 1370 ncur = ncur - sizeof (void *) * 4;
… …
681 } 1372 }
682 1373
683 return ncur; 1374 return ncur;
684} 1375}
685 1376
686static noinline void * 1377static void * noinline ecb_cold
687array_realloc (int elem, void *base, int *cur, int cnt) 1378array_realloc (int elem, void *base, int *cur, int cnt)
688{ 1379{
689 *cur = array_nextsize (elem, *cur, cnt); 1380 *cur = array_nextsize (elem, *cur, cnt);
690 return ev_realloc (base, elem * *cur); 1381 return ev_realloc (base, elem * *cur);
691} 1382}
… …
694 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1385 memset ((void *)(base), 0, sizeof (*(base)) * (count))
695 1386
696#define array_needsize(type,base,cur,cnt,init) \ 1387#define array_needsize(type,base,cur,cnt,init) \
697 if (expect_false ((cnt) > (cur))) \ 1388 if (expect_false ((cnt) > (cur))) \
698 { \ 1389 { \
699 int ocur_ = (cur); \ 1390 int ecb_unused ocur_ = (cur); \
700 (base) = (type *)array_realloc \ 1391 (base) = (type *)array_realloc \
701 (sizeof (type), (base), &(cur), (cnt)); \ 1392 (sizeof (type), (base), &(cur), (cnt)); \
702 init ((base) + (ocur_), (cur) - ocur_); \ 1393 init ((base) + (ocur_), (cur) - ocur_); \
703 } 1394 }
704 1395
… …
722pendingcb (EV_P_ ev_prepare *w, int revents) 1413pendingcb (EV_P_ ev_prepare *w, int revents)
723{ 1414{
724} 1415}
725 1416
726void noinline 1417void noinline
727ev_feed_event (EV_P_ void *w, int revents) 1418ev_feed_event (EV_P_ void *w, int revents) EV_THROW
728{ 1419{
729 W w_ = (W)w; 1420 W w_ = (W)w;
730 int pri = ABSPRI (w_); 1421 int pri = ABSPRI (w_);
731 1422
732 if (expect_false (w_->pending)) 1423 if (expect_false (w_->pending))
… …
736 w_->pending = ++pendingcnt [pri]; 1427 w_->pending = ++pendingcnt [pri];
737 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1428 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
738 pendings [pri][w_->pending - 1].w = w_; 1429 pendings [pri][w_->pending - 1].w = w_;
739 pendings [pri][w_->pending - 1].events = revents; 1430 pendings [pri][w_->pending - 1].events = revents;
740 } 1431 }
1432
1433 pendingpri = NUMPRI - 1;
741} 1434}
742 1435
743inline_speed void 1436inline_speed void
744feed_reverse (EV_P_ W w) 1437feed_reverse (EV_P_ W w)
745{ 1438{
… …
765} 1458}
766 1459
767/*****************************************************************************/ 1460/*****************************************************************************/
768 1461
769inline_speed void 1462inline_speed void
770fd_event_nc (EV_P_ int fd, int revents) 1463fd_event_nocheck (EV_P_ int fd, int revents)
771{ 1464{
772 ANFD *anfd = anfds + fd; 1465 ANFD *anfd = anfds + fd;
773 ev_io *w; 1466 ev_io *w;
774 1467
775 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1468 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
787fd_event (EV_P_ int fd, int revents) 1480fd_event (EV_P_ int fd, int revents)
788{ 1481{
789 ANFD *anfd = anfds + fd; 1482 ANFD *anfd = anfds + fd;
790 1483
791 if (expect_true (!anfd->reify)) 1484 if (expect_true (!anfd->reify))
792 fd_event_nc (EV_A_ fd, revents); 1485 fd_event_nocheck (EV_A_ fd, revents);
793} 1486}
794 1487
795void 1488void
796ev_feed_fd_event (EV_P_ int fd, int revents) 1489ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
797{ 1490{
798 if (fd >= 0 && fd < anfdmax) 1491 if (fd >= 0 && fd < anfdmax)
799 fd_event_nc (EV_A_ fd, revents); 1492 fd_event_nocheck (EV_A_ fd, revents);
800} 1493}
801 1494
802/* make sure the external fd watch events are in-sync */ 1495/* make sure the external fd watch events are in-sync */
803/* with the kernel/libev internal state */ 1496/* with the kernel/libev internal state */
804inline_size void 1497inline_size void
805fd_reify (EV_P) 1498fd_reify (EV_P)
806{ 1499{
807 int i; 1500 int i;
808 1501
1502#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1503 for (i = 0; i < fdchangecnt; ++i)
1504 {
1505 int fd = fdchanges [i];
1506 ANFD *anfd = anfds + fd;
1507
1508 if (anfd->reify & EV__IOFDSET && anfd->head)
1509 {
1510 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1511
1512 if (handle != anfd->handle)
1513 {
1514 unsigned long arg;
1515
1516 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1517
1518 /* handle changed, but fd didn't - we need to do it in two steps */
1519 backend_modify (EV_A_ fd, anfd->events, 0);
1520 anfd->events = 0;
1521 anfd->handle = handle;
1522 }
1523 }
1524 }
1525#endif
1526
809 for (i = 0; i < fdchangecnt; ++i) 1527 for (i = 0; i < fdchangecnt; ++i)
810 { 1528 {
811 int fd = fdchanges [i]; 1529 int fd = fdchanges [i];
812 ANFD *anfd = anfds + fd; 1530 ANFD *anfd = anfds + fd;
813 ev_io *w; 1531 ev_io *w;
814 1532
815 unsigned char events = 0; 1533 unsigned char o_events = anfd->events;
1534 unsigned char o_reify = anfd->reify;
816 1535
817 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1536 anfd->reify = 0;
818 events |= (unsigned char)w->events;
819 1537
820#if EV_SELECT_IS_WINSOCKET 1538 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
821 if (events)
822 { 1539 {
823 unsigned long arg; 1540 anfd->events = 0;
824 #ifdef EV_FD_TO_WIN32_HANDLE 1541
825 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1542 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
826 #else 1543 anfd->events |= (unsigned char)w->events;
827 anfd->handle = _get_osfhandle (fd); 1544
828 #endif 1545 if (o_events != anfd->events)
829 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1546 o_reify = EV__IOFDSET; /* actually |= */
830 } 1547 }
831#endif
832 1548
833 { 1549 if (o_reify & EV__IOFDSET)
834 unsigned char o_events = anfd->events;
835 unsigned char o_reify = anfd->reify;
836
837 anfd->reify = 0;
838 anfd->events = events;
839
840 if (o_events != events || o_reify & EV__IOFDSET)
841 backend_modify (EV_A_ fd, o_events, events); 1550 backend_modify (EV_A_ fd, o_events, anfd->events);
842 }
843 } 1551 }
844 1552
845 fdchangecnt = 0; 1553 fdchangecnt = 0;
846} 1554}
847 1555
… …
859 fdchanges [fdchangecnt - 1] = fd; 1567 fdchanges [fdchangecnt - 1] = fd;
860 } 1568 }
861} 1569}
862 1570
863/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1571/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
864inline_speed void 1572inline_speed void ecb_cold
865fd_kill (EV_P_ int fd) 1573fd_kill (EV_P_ int fd)
866{ 1574{
867 ev_io *w; 1575 ev_io *w;
868 1576
869 while ((w = (ev_io *)anfds [fd].head)) 1577 while ((w = (ev_io *)anfds [fd].head))
… …
871 ev_io_stop (EV_A_ w); 1579 ev_io_stop (EV_A_ w);
872 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1580 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
873 } 1581 }
874} 1582}
875 1583
876/* check whether the given fd is atcually valid, for error recovery */ 1584/* check whether the given fd is actually valid, for error recovery */
877inline_size int 1585inline_size int ecb_cold
878fd_valid (int fd) 1586fd_valid (int fd)
879{ 1587{
880#ifdef _WIN32 1588#ifdef _WIN32
881 return _get_osfhandle (fd) != -1; 1589 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
882#else 1590#else
883 return fcntl (fd, F_GETFD) != -1; 1591 return fcntl (fd, F_GETFD) != -1;
884#endif 1592#endif
885} 1593}
886 1594
887/* called on EBADF to verify fds */ 1595/* called on EBADF to verify fds */
888static void noinline 1596static void noinline ecb_cold
889fd_ebadf (EV_P) 1597fd_ebadf (EV_P)
890{ 1598{
891 int fd; 1599 int fd;
892 1600
893 for (fd = 0; fd < anfdmax; ++fd) 1601 for (fd = 0; fd < anfdmax; ++fd)
… …
895 if (!fd_valid (fd) && errno == EBADF) 1603 if (!fd_valid (fd) && errno == EBADF)
896 fd_kill (EV_A_ fd); 1604 fd_kill (EV_A_ fd);
897} 1605}
898 1606
899/* called on ENOMEM in select/poll to kill some fds and retry */ 1607/* called on ENOMEM in select/poll to kill some fds and retry */
900static void noinline 1608static void noinline ecb_cold
901fd_enomem (EV_P) 1609fd_enomem (EV_P)
902{ 1610{
903 int fd; 1611 int fd;
904 1612
905 for (fd = anfdmax; fd--; ) 1613 for (fd = anfdmax; fd--; )
906 if (anfds [fd].events) 1614 if (anfds [fd].events)
907 { 1615 {
908 fd_kill (EV_A_ fd); 1616 fd_kill (EV_A_ fd);
909 return; 1617 break;
910 } 1618 }
911} 1619}
912 1620
913/* usually called after fork if backend needs to re-arm all fds from scratch */ 1621/* usually called after fork if backend needs to re-arm all fds from scratch */
914static void noinline 1622static void noinline
… …
923 anfds [fd].emask = 0; 1631 anfds [fd].emask = 0;
924 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 1632 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
925 } 1633 }
926} 1634}
927 1635
1636/* used to prepare libev internal fd's */
1637/* this is not fork-safe */
1638inline_speed void
1639fd_intern (int fd)
1640{
1641#ifdef _WIN32
1642 unsigned long arg = 1;
1643 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1644#else
1645 fcntl (fd, F_SETFD, FD_CLOEXEC);
1646 fcntl (fd, F_SETFL, O_NONBLOCK);
1647#endif
1648}
1649
928/*****************************************************************************/ 1650/*****************************************************************************/
929 1651
930/* 1652/*
931 * the heap functions want a real array index. array index 0 uis guaranteed to not 1653 * the heap functions want a real array index. array index 0 is guaranteed to not
932 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1654 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
933 * the branching factor of the d-tree. 1655 * the branching factor of the d-tree.
934 */ 1656 */
935 1657
936/* 1658/*
… …
1004 1726
1005 for (;;) 1727 for (;;)
1006 { 1728 {
1007 int c = k << 1; 1729 int c = k << 1;
1008 1730
1009 if (c > N + HEAP0 - 1) 1731 if (c >= N + HEAP0)
1010 break; 1732 break;
1011 1733
1012 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1734 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
1013 ? 1 : 0; 1735 ? 1 : 0;
1014 1736
… …
1050 1772
1051/* move an element suitably so it is in a correct place */ 1773/* move an element suitably so it is in a correct place */
1052inline_size void 1774inline_size void
1053adjustheap (ANHE *heap, int N, int k) 1775adjustheap (ANHE *heap, int N, int k)
1054{ 1776{
1055 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1777 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1056 upheap (heap, k); 1778 upheap (heap, k);
1057 else 1779 else
1058 downheap (heap, N, k); 1780 downheap (heap, N, k);
1059} 1781}
1060 1782
… …
1073/*****************************************************************************/ 1795/*****************************************************************************/
1074 1796
1075/* associate signal watchers to a signal signal */ 1797/* associate signal watchers to a signal signal */
1076typedef struct 1798typedef struct
1077{ 1799{
1800 EV_ATOMIC_T pending;
1801#if EV_MULTIPLICITY
1802 EV_P;
1803#endif
1078 WL head; 1804 WL head;
1079 EV_ATOMIC_T gotsig;
1080} ANSIG; 1805} ANSIG;
1081 1806
1082static ANSIG *signals; 1807static ANSIG signals [EV_NSIG - 1];
1083static int signalmax;
1084
1085static EV_ATOMIC_T gotsig;
1086 1808
1087/*****************************************************************************/ 1809/*****************************************************************************/
1088 1810
1089/* used to prepare libev internal fd's */ 1811#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1090/* this is not fork-safe */
1091inline_speed void
1092fd_intern (int fd)
1093{
1094#ifdef _WIN32
1095 unsigned long arg = 1;
1096 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1097#else
1098 fcntl (fd, F_SETFD, FD_CLOEXEC);
1099 fcntl (fd, F_SETFL, O_NONBLOCK);
1100#endif
1101}
1102 1812
1103static void noinline 1813static void noinline ecb_cold
1104evpipe_init (EV_P) 1814evpipe_init (EV_P)
1105{ 1815{
1106 if (!ev_is_active (&pipe_w)) 1816 if (!ev_is_active (&pipe_w))
1107 { 1817 {
1108#if EV_USE_EVENTFD 1818# if EV_USE_EVENTFD
1819 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1820 if (evfd < 0 && errno == EINVAL)
1109 if ((evfd = eventfd (0, 0)) >= 0) 1821 evfd = eventfd (0, 0);
1822
1823 if (evfd >= 0)
1110 { 1824 {
1111 evpipe [0] = -1; 1825 evpipe [0] = -1;
1112 fd_intern (evfd); 1826 fd_intern (evfd); /* doing it twice doesn't hurt */
1113 ev_io_set (&pipe_w, evfd, EV_READ); 1827 ev_io_set (&pipe_w, evfd, EV_READ);
1114 } 1828 }
1115 else 1829 else
1116#endif 1830# endif
1117 { 1831 {
1118 while (pipe (evpipe)) 1832 while (pipe (evpipe))
1119 ev_syserr ("(libev) error creating signal/async pipe"); 1833 ev_syserr ("(libev) error creating signal/async pipe");
1120 1834
1121 fd_intern (evpipe [0]); 1835 fd_intern (evpipe [0]);
… …
1126 ev_io_start (EV_A_ &pipe_w); 1840 ev_io_start (EV_A_ &pipe_w);
1127 ev_unref (EV_A); /* watcher should not keep loop alive */ 1841 ev_unref (EV_A); /* watcher should not keep loop alive */
1128 } 1842 }
1129} 1843}
1130 1844
1131inline_size void 1845inline_speed void
1132evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1846evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1133{ 1847{
1134 if (!*flag) 1848 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1849
1850 if (expect_true (*flag))
1851 return;
1852
1853 *flag = 1;
1854 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1855
1856 pipe_write_skipped = 1;
1857
1858 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1859
1860 if (pipe_write_wanted)
1135 { 1861 {
1862 int old_errno;
1863
1864 pipe_write_skipped = 0;
1865 ECB_MEMORY_FENCE_RELEASE;
1866
1136 int old_errno = errno; /* save errno because write might clobber it */ 1867 old_errno = errno; /* save errno because write will clobber it */
1137
1138 *flag = 1;
1139 1868
1140#if EV_USE_EVENTFD 1869#if EV_USE_EVENTFD
1141 if (evfd >= 0) 1870 if (evfd >= 0)
1142 { 1871 {
1143 uint64_t counter = 1; 1872 uint64_t counter = 1;
1144 write (evfd, &counter, sizeof (uint64_t)); 1873 write (evfd, &counter, sizeof (uint64_t));
1145 } 1874 }
1146 else 1875 else
1147#endif 1876#endif
1877 {
1878#ifdef _WIN32
1879 WSABUF buf;
1880 DWORD sent;
1881 buf.buf = &buf;
1882 buf.len = 1;
1883 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1884#else
1148 write (evpipe [1], &old_errno, 1); 1885 write (evpipe [1], &(evpipe [1]), 1);
1886#endif
1887 }
1149 1888
1150 errno = old_errno; 1889 errno = old_errno;
1151 } 1890 }
1152} 1891}
1153 1892
1154/* called whenever the libev signal pipe */ 1893/* called whenever the libev signal pipe */
1155/* got some events (signal, async) */ 1894/* got some events (signal, async) */
1156static void 1895static void
1157pipecb (EV_P_ ev_io *iow, int revents) 1896pipecb (EV_P_ ev_io *iow, int revents)
1158{ 1897{
1898 int i;
1899
1900 if (revents & EV_READ)
1901 {
1159#if EV_USE_EVENTFD 1902#if EV_USE_EVENTFD
1160 if (evfd >= 0) 1903 if (evfd >= 0)
1161 { 1904 {
1162 uint64_t counter; 1905 uint64_t counter;
1163 read (evfd, &counter, sizeof (uint64_t)); 1906 read (evfd, &counter, sizeof (uint64_t));
1164 } 1907 }
1165 else 1908 else
1166#endif 1909#endif
1167 { 1910 {
1168 char dummy; 1911 char dummy[4];
1912#ifdef _WIN32
1913 WSABUF buf;
1914 DWORD recvd;
1915 DWORD flags = 0;
1916 buf.buf = dummy;
1917 buf.len = sizeof (dummy);
1918 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
1919#else
1169 read (evpipe [0], &dummy, 1); 1920 read (evpipe [0], &dummy, sizeof (dummy));
1921#endif
1922 }
1923 }
1924
1925 pipe_write_skipped = 0;
1926
1927 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1928
1929#if EV_SIGNAL_ENABLE
1930 if (sig_pending)
1170 } 1931 {
1932 sig_pending = 0;
1171 1933
1172 if (gotsig && ev_is_default_loop (EV_A)) 1934 ECB_MEMORY_FENCE;
1173 {
1174 int signum;
1175 gotsig = 0;
1176 1935
1177 for (signum = signalmax; signum--; ) 1936 for (i = EV_NSIG - 1; i--; )
1178 if (signals [signum].gotsig) 1937 if (expect_false (signals [i].pending))
1179 ev_feed_signal_event (EV_A_ signum + 1); 1938 ev_feed_signal_event (EV_A_ i + 1);
1180 } 1939 }
1940#endif
1181 1941
1182#if EV_ASYNC_ENABLE 1942#if EV_ASYNC_ENABLE
1183 if (gotasync) 1943 if (async_pending)
1184 { 1944 {
1185 int i; 1945 async_pending = 0;
1186 gotasync = 0; 1946
1947 ECB_MEMORY_FENCE;
1187 1948
1188 for (i = asynccnt; i--; ) 1949 for (i = asynccnt; i--; )
1189 if (asyncs [i]->sent) 1950 if (asyncs [i]->sent)
1190 { 1951 {
1191 asyncs [i]->sent = 0; 1952 asyncs [i]->sent = 0;
1953 ECB_MEMORY_FENCE_RELEASE;
1192 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 1954 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1193 } 1955 }
1194 } 1956 }
1195#endif 1957#endif
1196} 1958}
1197 1959
1198/*****************************************************************************/ 1960/*****************************************************************************/
1199 1961
1962void
1963ev_feed_signal (int signum) EV_THROW
1964{
1965#if EV_MULTIPLICITY
1966 EV_P = signals [signum - 1].loop;
1967
1968 if (!EV_A)
1969 return;
1970#endif
1971
1972 if (!ev_active (&pipe_w))
1973 return;
1974
1975 signals [signum - 1].pending = 1;
1976 evpipe_write (EV_A_ &sig_pending);
1977}
1978
1200static void 1979static void
1201ev_sighandler (int signum) 1980ev_sighandler (int signum)
1202{ 1981{
1982#ifdef _WIN32
1983 signal (signum, ev_sighandler);
1984#endif
1985
1986 ev_feed_signal (signum);
1987}
1988
1989void noinline
1990ev_feed_signal_event (EV_P_ int signum) EV_THROW
1991{
1992 WL w;
1993
1994 if (expect_false (signum <= 0 || signum > EV_NSIG))
1995 return;
1996
1997 --signum;
1998
1203#if EV_MULTIPLICITY 1999#if EV_MULTIPLICITY
1204 struct ev_loop *loop = &default_loop_struct; 2000 /* it is permissible to try to feed a signal to the wrong loop */
1205#endif 2001 /* or, likely more useful, feeding a signal nobody is waiting for */
1206 2002
1207#if _WIN32 2003 if (expect_false (signals [signum].loop != EV_A))
1208 signal (signum, ev_sighandler);
1209#endif
1210
1211 signals [signum - 1].gotsig = 1;
1212 evpipe_write (EV_A_ &gotsig);
1213}
1214
1215void noinline
1216ev_feed_signal_event (EV_P_ int signum)
1217{
1218 WL w;
1219
1220#if EV_MULTIPLICITY
1221 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1222#endif
1223
1224 --signum;
1225
1226 if (signum < 0 || signum >= signalmax)
1227 return; 2004 return;
2005#endif
1228 2006
1229 signals [signum].gotsig = 0; 2007 signals [signum].pending = 0;
2008 MEMORY_FENCE_RELEASE;
1230 2009
1231 for (w = signals [signum].head; w; w = w->next) 2010 for (w = signals [signum].head; w; w = w->next)
1232 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2011 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1233} 2012}
1234 2013
2014#if EV_USE_SIGNALFD
2015static void
2016sigfdcb (EV_P_ ev_io *iow, int revents)
2017{
2018 struct signalfd_siginfo si[2], *sip; /* these structs are big */
2019
2020 for (;;)
2021 {
2022 ssize_t res = read (sigfd, si, sizeof (si));
2023
2024 /* not ISO-C, as res might be -1, but works with SuS */
2025 for (sip = si; (char *)sip < (char *)si + res; ++sip)
2026 ev_feed_signal_event (EV_A_ sip->ssi_signo);
2027
2028 if (res < (ssize_t)sizeof (si))
2029 break;
2030 }
2031}
2032#endif
2033
2034#endif
2035
1235/*****************************************************************************/ 2036/*****************************************************************************/
1236 2037
2038#if EV_CHILD_ENABLE
1237static WL childs [EV_PID_HASHSIZE]; 2039static WL childs [EV_PID_HASHSIZE];
1238
1239#ifndef _WIN32
1240 2040
1241static ev_signal childev; 2041static ev_signal childev;
1242 2042
1243#ifndef WIFCONTINUED 2043#ifndef WIFCONTINUED
1244# define WIFCONTINUED(status) 0 2044# define WIFCONTINUED(status) 0
… …
1249child_reap (EV_P_ int chain, int pid, int status) 2049child_reap (EV_P_ int chain, int pid, int status)
1250{ 2050{
1251 ev_child *w; 2051 ev_child *w;
1252 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2052 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1253 2053
1254 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2054 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1255 { 2055 {
1256 if ((w->pid == pid || !w->pid) 2056 if ((w->pid == pid || !w->pid)
1257 && (!traced || (w->flags & 1))) 2057 && (!traced || (w->flags & 1)))
1258 { 2058 {
1259 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2059 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1284 /* make sure we are called again until all children have been reaped */ 2084 /* make sure we are called again until all children have been reaped */
1285 /* we need to do it this way so that the callback gets called before we continue */ 2085 /* we need to do it this way so that the callback gets called before we continue */
1286 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2086 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1287 2087
1288 child_reap (EV_A_ pid, pid, status); 2088 child_reap (EV_A_ pid, pid, status);
1289 if (EV_PID_HASHSIZE > 1) 2089 if ((EV_PID_HASHSIZE) > 1)
1290 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2090 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1291} 2091}
1292 2092
1293#endif 2093#endif
1294 2094
1295/*****************************************************************************/ 2095/*****************************************************************************/
1296 2096
2097#if EV_USE_IOCP
2098# include "ev_iocp.c"
2099#endif
1297#if EV_USE_PORT 2100#if EV_USE_PORT
1298# include "ev_port.c" 2101# include "ev_port.c"
1299#endif 2102#endif
1300#if EV_USE_KQUEUE 2103#if EV_USE_KQUEUE
1301# include "ev_kqueue.c" 2104# include "ev_kqueue.c"
… …
1308#endif 2111#endif
1309#if EV_USE_SELECT 2112#if EV_USE_SELECT
1310# include "ev_select.c" 2113# include "ev_select.c"
1311#endif 2114#endif
1312 2115
1313int 2116int ecb_cold
1314ev_version_major (void) 2117ev_version_major (void) EV_THROW
1315{ 2118{
1316 return EV_VERSION_MAJOR; 2119 return EV_VERSION_MAJOR;
1317} 2120}
1318 2121
1319int 2122int ecb_cold
1320ev_version_minor (void) 2123ev_version_minor (void) EV_THROW
1321{ 2124{
1322 return EV_VERSION_MINOR; 2125 return EV_VERSION_MINOR;
1323} 2126}
1324 2127
1325/* return true if we are running with elevated privileges and should ignore env variables */ 2128/* return true if we are running with elevated privileges and should ignore env variables */
1326int inline_size 2129int inline_size ecb_cold
1327enable_secure (void) 2130enable_secure (void)
1328{ 2131{
1329#ifdef _WIN32 2132#ifdef _WIN32
1330 return 0; 2133 return 0;
1331#else 2134#else
1332 return getuid () != geteuid () 2135 return getuid () != geteuid ()
1333 || getgid () != getegid (); 2136 || getgid () != getegid ();
1334#endif 2137#endif
1335} 2138}
1336 2139
1337unsigned int 2140unsigned int ecb_cold
1338ev_supported_backends (void) 2141ev_supported_backends (void) EV_THROW
1339{ 2142{
1340 unsigned int flags = 0; 2143 unsigned int flags = 0;
1341 2144
1342 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2145 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1343 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2146 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1346 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2149 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1347 2150
1348 return flags; 2151 return flags;
1349} 2152}
1350 2153
1351unsigned int 2154unsigned int ecb_cold
1352ev_recommended_backends (void) 2155ev_recommended_backends (void) EV_THROW
1353{ 2156{
1354 unsigned int flags = ev_supported_backends (); 2157 unsigned int flags = ev_supported_backends ();
1355 2158
1356#ifndef __NetBSD__ 2159#ifndef __NetBSD__
1357 /* kqueue is borked on everything but netbsd apparently */ 2160 /* kqueue is borked on everything but netbsd apparently */
… …
1361#ifdef __APPLE__ 2164#ifdef __APPLE__
1362 /* only select works correctly on that "unix-certified" platform */ 2165 /* only select works correctly on that "unix-certified" platform */
1363 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2166 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1364 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2167 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1365#endif 2168#endif
2169#ifdef __FreeBSD__
2170 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2171#endif
1366 2172
1367 return flags; 2173 return flags;
1368} 2174}
1369 2175
2176unsigned int ecb_cold
2177ev_embeddable_backends (void) EV_THROW
2178{
2179 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2180
2181 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2182 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2183 flags &= ~EVBACKEND_EPOLL;
2184
2185 return flags;
2186}
2187
1370unsigned int 2188unsigned int
1371ev_embeddable_backends (void) 2189ev_backend (EV_P) EV_THROW
1372{ 2190{
1373 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2191 return backend;
1374
1375 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1376 /* please fix it and tell me how to detect the fix */
1377 flags &= ~EVBACKEND_EPOLL;
1378
1379 return flags;
1380} 2192}
1381 2193
2194#if EV_FEATURE_API
1382unsigned int 2195unsigned int
1383ev_backend (EV_P) 2196ev_iteration (EV_P) EV_THROW
1384{ 2197{
1385 return backend; 2198 return loop_count;
1386} 2199}
1387 2200
1388#if EV_MINIMAL < 2
1389unsigned int 2201unsigned int
1390ev_loop_count (EV_P) 2202ev_depth (EV_P) EV_THROW
1391{
1392 return loop_count;
1393}
1394
1395unsigned int
1396ev_loop_depth (EV_P)
1397{ 2203{
1398 return loop_depth; 2204 return loop_depth;
1399} 2205}
1400 2206
1401void 2207void
1402ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2208ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1403{ 2209{
1404 io_blocktime = interval; 2210 io_blocktime = interval;
1405} 2211}
1406 2212
1407void 2213void
1408ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2214ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1409{ 2215{
1410 timeout_blocktime = interval; 2216 timeout_blocktime = interval;
1411} 2217}
1412 2218
1413void 2219void
1414ev_set_userdata (EV_P_ void *data) 2220ev_set_userdata (EV_P_ void *data) EV_THROW
1415{ 2221{
1416 userdata = data; 2222 userdata = data;
1417} 2223}
1418 2224
1419void * 2225void *
1420ev_userdata (EV_P) 2226ev_userdata (EV_P) EV_THROW
1421{ 2227{
1422 return userdata; 2228 return userdata;
1423} 2229}
1424 2230
2231void
1425void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2232ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
1426{ 2233{
1427 invoke_cb = invoke_pending_cb; 2234 invoke_cb = invoke_pending_cb;
1428} 2235}
1429 2236
2237void
1430void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2238ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1431{ 2239{
1432 release_cb = release; 2240 release_cb = release;
1433 acquire_cb = acquire; 2241 acquire_cb = acquire;
1434} 2242}
1435#endif 2243#endif
1436 2244
1437/* initialise a loop structure, must be zero-initialised */ 2245/* initialise a loop structure, must be zero-initialised */
1438static void noinline 2246static void noinline ecb_cold
1439loop_init (EV_P_ unsigned int flags) 2247loop_init (EV_P_ unsigned int flags) EV_THROW
1440{ 2248{
1441 if (!backend) 2249 if (!backend)
1442 { 2250 {
2251 origflags = flags;
2252
1443#if EV_USE_REALTIME 2253#if EV_USE_REALTIME
1444 if (!have_realtime) 2254 if (!have_realtime)
1445 { 2255 {
1446 struct timespec ts; 2256 struct timespec ts;
1447 2257
… …
1458 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2268 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1459 have_monotonic = 1; 2269 have_monotonic = 1;
1460 } 2270 }
1461#endif 2271#endif
1462 2272
1463 ev_rt_now = ev_time ();
1464 mn_now = get_clock ();
1465 now_floor = mn_now;
1466 rtmn_diff = ev_rt_now - mn_now;
1467#if EV_MINIMAL < 2
1468 invoke_cb = ev_invoke_pending;
1469#endif
1470
1471 io_blocktime = 0.;
1472 timeout_blocktime = 0.;
1473 backend = 0;
1474 backend_fd = -1;
1475 gotasync = 0;
1476#if EV_USE_INOTIFY
1477 fs_fd = -2;
1478#endif
1479
1480 /* pid check not overridable via env */ 2273 /* pid check not overridable via env */
1481#ifndef _WIN32 2274#ifndef _WIN32
1482 if (flags & EVFLAG_FORKCHECK) 2275 if (flags & EVFLAG_FORKCHECK)
1483 curpid = getpid (); 2276 curpid = getpid ();
1484#endif 2277#endif
… …
1486 if (!(flags & EVFLAG_NOENV) 2279 if (!(flags & EVFLAG_NOENV)
1487 && !enable_secure () 2280 && !enable_secure ()
1488 && getenv ("LIBEV_FLAGS")) 2281 && getenv ("LIBEV_FLAGS"))
1489 flags = atoi (getenv ("LIBEV_FLAGS")); 2282 flags = atoi (getenv ("LIBEV_FLAGS"));
1490 2283
1491 if (!(flags & 0x0000ffffU)) 2284 ev_rt_now = ev_time ();
2285 mn_now = get_clock ();
2286 now_floor = mn_now;
2287 rtmn_diff = ev_rt_now - mn_now;
2288#if EV_FEATURE_API
2289 invoke_cb = ev_invoke_pending;
2290#endif
2291
2292 io_blocktime = 0.;
2293 timeout_blocktime = 0.;
2294 backend = 0;
2295 backend_fd = -1;
2296 sig_pending = 0;
2297#if EV_ASYNC_ENABLE
2298 async_pending = 0;
2299#endif
2300 pipe_write_skipped = 0;
2301 pipe_write_wanted = 0;
2302#if EV_USE_INOTIFY
2303 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2304#endif
2305#if EV_USE_SIGNALFD
2306 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2307#endif
2308
2309 if (!(flags & EVBACKEND_MASK))
1492 flags |= ev_recommended_backends (); 2310 flags |= ev_recommended_backends ();
1493 2311
2312#if EV_USE_IOCP
2313 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2314#endif
1494#if EV_USE_PORT 2315#if EV_USE_PORT
1495 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2316 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1496#endif 2317#endif
1497#if EV_USE_KQUEUE 2318#if EV_USE_KQUEUE
1498 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2319 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1507 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2328 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1508#endif 2329#endif
1509 2330
1510 ev_prepare_init (&pending_w, pendingcb); 2331 ev_prepare_init (&pending_w, pendingcb);
1511 2332
2333#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1512 ev_init (&pipe_w, pipecb); 2334 ev_init (&pipe_w, pipecb);
1513 ev_set_priority (&pipe_w, EV_MAXPRI); 2335 ev_set_priority (&pipe_w, EV_MAXPRI);
2336#endif
1514 } 2337 }
1515} 2338}
1516 2339
1517/* free up a loop structure */ 2340/* free up a loop structure */
1518static void noinline 2341void ecb_cold
1519loop_destroy (EV_P) 2342ev_loop_destroy (EV_P)
1520{ 2343{
1521 int i; 2344 int i;
1522 2345
2346#if EV_MULTIPLICITY
2347 /* mimic free (0) */
2348 if (!EV_A)
2349 return;
2350#endif
2351
2352#if EV_CLEANUP_ENABLE
2353 /* queue cleanup watchers (and execute them) */
2354 if (expect_false (cleanupcnt))
2355 {
2356 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2357 EV_INVOKE_PENDING;
2358 }
2359#endif
2360
2361#if EV_CHILD_ENABLE
2362 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2363 {
2364 ev_ref (EV_A); /* child watcher */
2365 ev_signal_stop (EV_A_ &childev);
2366 }
2367#endif
2368
1523 if (ev_is_active (&pipe_w)) 2369 if (ev_is_active (&pipe_w))
1524 { 2370 {
1525 ev_ref (EV_A); /* signal watcher */ 2371 /*ev_ref (EV_A);*/
1526 ev_io_stop (EV_A_ &pipe_w); 2372 /*ev_io_stop (EV_A_ &pipe_w);*/
1527 2373
1528#if EV_USE_EVENTFD 2374#if EV_USE_EVENTFD
1529 if (evfd >= 0) 2375 if (evfd >= 0)
1530 close (evfd); 2376 close (evfd);
1531#endif 2377#endif
1532 2378
1533 if (evpipe [0] >= 0) 2379 if (evpipe [0] >= 0)
1534 { 2380 {
1535 close (evpipe [0]); 2381 EV_WIN32_CLOSE_FD (evpipe [0]);
1536 close (evpipe [1]); 2382 EV_WIN32_CLOSE_FD (evpipe [1]);
1537 } 2383 }
1538 } 2384 }
2385
2386#if EV_USE_SIGNALFD
2387 if (ev_is_active (&sigfd_w))
2388 close (sigfd);
2389#endif
1539 2390
1540#if EV_USE_INOTIFY 2391#if EV_USE_INOTIFY
1541 if (fs_fd >= 0) 2392 if (fs_fd >= 0)
1542 close (fs_fd); 2393 close (fs_fd);
1543#endif 2394#endif
1544 2395
1545 if (backend_fd >= 0) 2396 if (backend_fd >= 0)
1546 close (backend_fd); 2397 close (backend_fd);
1547 2398
2399#if EV_USE_IOCP
2400 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2401#endif
1548#if EV_USE_PORT 2402#if EV_USE_PORT
1549 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2403 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1550#endif 2404#endif
1551#if EV_USE_KQUEUE 2405#if EV_USE_KQUEUE
1552 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2406 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1567#if EV_IDLE_ENABLE 2421#if EV_IDLE_ENABLE
1568 array_free (idle, [i]); 2422 array_free (idle, [i]);
1569#endif 2423#endif
1570 } 2424 }
1571 2425
1572 ev_free (anfds); anfdmax = 0; 2426 ev_free (anfds); anfds = 0; anfdmax = 0;
1573 2427
1574 /* have to use the microsoft-never-gets-it-right macro */ 2428 /* have to use the microsoft-never-gets-it-right macro */
1575 array_free (rfeed, EMPTY); 2429 array_free (rfeed, EMPTY);
1576 array_free (fdchange, EMPTY); 2430 array_free (fdchange, EMPTY);
1577 array_free (timer, EMPTY); 2431 array_free (timer, EMPTY);
… …
1579 array_free (periodic, EMPTY); 2433 array_free (periodic, EMPTY);
1580#endif 2434#endif
1581#if EV_FORK_ENABLE 2435#if EV_FORK_ENABLE
1582 array_free (fork, EMPTY); 2436 array_free (fork, EMPTY);
1583#endif 2437#endif
2438#if EV_CLEANUP_ENABLE
2439 array_free (cleanup, EMPTY);
2440#endif
1584 array_free (prepare, EMPTY); 2441 array_free (prepare, EMPTY);
1585 array_free (check, EMPTY); 2442 array_free (check, EMPTY);
1586#if EV_ASYNC_ENABLE 2443#if EV_ASYNC_ENABLE
1587 array_free (async, EMPTY); 2444 array_free (async, EMPTY);
1588#endif 2445#endif
1589 2446
1590 backend = 0; 2447 backend = 0;
2448
2449#if EV_MULTIPLICITY
2450 if (ev_is_default_loop (EV_A))
2451#endif
2452 ev_default_loop_ptr = 0;
2453#if EV_MULTIPLICITY
2454 else
2455 ev_free (EV_A);
2456#endif
1591} 2457}
1592 2458
1593#if EV_USE_INOTIFY 2459#if EV_USE_INOTIFY
1594inline_size void infy_fork (EV_P); 2460inline_size void infy_fork (EV_P);
1595#endif 2461#endif
… …
1610 infy_fork (EV_A); 2476 infy_fork (EV_A);
1611#endif 2477#endif
1612 2478
1613 if (ev_is_active (&pipe_w)) 2479 if (ev_is_active (&pipe_w))
1614 { 2480 {
1615 /* this "locks" the handlers against writing to the pipe */ 2481 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1616 /* while we modify the fd vars */
1617 gotsig = 1;
1618#if EV_ASYNC_ENABLE
1619 gotasync = 1;
1620#endif
1621 2482
1622 ev_ref (EV_A); 2483 ev_ref (EV_A);
1623 ev_io_stop (EV_A_ &pipe_w); 2484 ev_io_stop (EV_A_ &pipe_w);
1624 2485
1625#if EV_USE_EVENTFD 2486#if EV_USE_EVENTFD
… …
1627 close (evfd); 2488 close (evfd);
1628#endif 2489#endif
1629 2490
1630 if (evpipe [0] >= 0) 2491 if (evpipe [0] >= 0)
1631 { 2492 {
1632 close (evpipe [0]); 2493 EV_WIN32_CLOSE_FD (evpipe [0]);
1633 close (evpipe [1]); 2494 EV_WIN32_CLOSE_FD (evpipe [1]);
1634 } 2495 }
1635 2496
2497#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1636 evpipe_init (EV_A); 2498 evpipe_init (EV_A);
1637 /* now iterate over everything, in case we missed something */ 2499 /* now iterate over everything, in case we missed something */
1638 pipecb (EV_A_ &pipe_w, EV_READ); 2500 pipecb (EV_A_ &pipe_w, EV_READ);
2501#endif
1639 } 2502 }
1640 2503
1641 postfork = 0; 2504 postfork = 0;
1642} 2505}
1643 2506
1644#if EV_MULTIPLICITY 2507#if EV_MULTIPLICITY
1645 2508
1646struct ev_loop * 2509struct ev_loop * ecb_cold
1647ev_loop_new (unsigned int flags) 2510ev_loop_new (unsigned int flags) EV_THROW
1648{ 2511{
1649 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2512 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1650 2513
1651 memset (loop, 0, sizeof (struct ev_loop)); 2514 memset (EV_A, 0, sizeof (struct ev_loop));
1652
1653 loop_init (EV_A_ flags); 2515 loop_init (EV_A_ flags);
1654 2516
1655 if (ev_backend (EV_A)) 2517 if (ev_backend (EV_A))
1656 return loop; 2518 return EV_A;
1657 2519
2520 ev_free (EV_A);
1658 return 0; 2521 return 0;
1659} 2522}
1660 2523
1661void
1662ev_loop_destroy (EV_P)
1663{
1664 loop_destroy (EV_A);
1665 ev_free (loop);
1666}
1667
1668void
1669ev_loop_fork (EV_P)
1670{
1671 postfork = 1; /* must be in line with ev_default_fork */
1672}
1673#endif /* multiplicity */ 2524#endif /* multiplicity */
1674 2525
1675#if EV_VERIFY 2526#if EV_VERIFY
1676static void noinline 2527static void noinline ecb_cold
1677verify_watcher (EV_P_ W w) 2528verify_watcher (EV_P_ W w)
1678{ 2529{
1679 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2530 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1680 2531
1681 if (w->pending) 2532 if (w->pending)
1682 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2533 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1683} 2534}
1684 2535
1685static void noinline 2536static void noinline ecb_cold
1686verify_heap (EV_P_ ANHE *heap, int N) 2537verify_heap (EV_P_ ANHE *heap, int N)
1687{ 2538{
1688 int i; 2539 int i;
1689 2540
1690 for (i = HEAP0; i < N + HEAP0; ++i) 2541 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1695 2546
1696 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2547 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1697 } 2548 }
1698} 2549}
1699 2550
1700static void noinline 2551static void noinline ecb_cold
1701array_verify (EV_P_ W *ws, int cnt) 2552array_verify (EV_P_ W *ws, int cnt)
1702{ 2553{
1703 while (cnt--) 2554 while (cnt--)
1704 { 2555 {
1705 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2556 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1706 verify_watcher (EV_A_ ws [cnt]); 2557 verify_watcher (EV_A_ ws [cnt]);
1707 } 2558 }
1708} 2559}
1709#endif 2560#endif
1710 2561
1711#if EV_MINIMAL < 2 2562#if EV_FEATURE_API
1712void 2563void ecb_cold
1713ev_loop_verify (EV_P) 2564ev_verify (EV_P) EV_THROW
1714{ 2565{
1715#if EV_VERIFY 2566#if EV_VERIFY
1716 int i; 2567 int i;
1717 WL w; 2568 WL w, w2;
1718 2569
1719 assert (activecnt >= -1); 2570 assert (activecnt >= -1);
1720 2571
1721 assert (fdchangemax >= fdchangecnt); 2572 assert (fdchangemax >= fdchangecnt);
1722 for (i = 0; i < fdchangecnt; ++i) 2573 for (i = 0; i < fdchangecnt; ++i)
1723 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2574 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1724 2575
1725 assert (anfdmax >= 0); 2576 assert (anfdmax >= 0);
1726 for (i = 0; i < anfdmax; ++i) 2577 for (i = 0; i < anfdmax; ++i)
2578 {
2579 int j = 0;
2580
1727 for (w = anfds [i].head; w; w = w->next) 2581 for (w = w2 = anfds [i].head; w; w = w->next)
1728 { 2582 {
1729 verify_watcher (EV_A_ (W)w); 2583 verify_watcher (EV_A_ (W)w);
2584
2585 if (j++ & 1)
2586 {
2587 assert (("libev: io watcher list contains a loop", w != w2));
2588 w2 = w2->next;
2589 }
2590
1730 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2591 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1731 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2592 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1732 } 2593 }
2594 }
1733 2595
1734 assert (timermax >= timercnt); 2596 assert (timermax >= timercnt);
1735 verify_heap (EV_A_ timers, timercnt); 2597 verify_heap (EV_A_ timers, timercnt);
1736 2598
1737#if EV_PERIODIC_ENABLE 2599#if EV_PERIODIC_ENABLE
… …
1752#if EV_FORK_ENABLE 2614#if EV_FORK_ENABLE
1753 assert (forkmax >= forkcnt); 2615 assert (forkmax >= forkcnt);
1754 array_verify (EV_A_ (W *)forks, forkcnt); 2616 array_verify (EV_A_ (W *)forks, forkcnt);
1755#endif 2617#endif
1756 2618
2619#if EV_CLEANUP_ENABLE
2620 assert (cleanupmax >= cleanupcnt);
2621 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2622#endif
2623
1757#if EV_ASYNC_ENABLE 2624#if EV_ASYNC_ENABLE
1758 assert (asyncmax >= asynccnt); 2625 assert (asyncmax >= asynccnt);
1759 array_verify (EV_A_ (W *)asyncs, asynccnt); 2626 array_verify (EV_A_ (W *)asyncs, asynccnt);
1760#endif 2627#endif
1761 2628
2629#if EV_PREPARE_ENABLE
1762 assert (preparemax >= preparecnt); 2630 assert (preparemax >= preparecnt);
1763 array_verify (EV_A_ (W *)prepares, preparecnt); 2631 array_verify (EV_A_ (W *)prepares, preparecnt);
2632#endif
1764 2633
2634#if EV_CHECK_ENABLE
1765 assert (checkmax >= checkcnt); 2635 assert (checkmax >= checkcnt);
1766 array_verify (EV_A_ (W *)checks, checkcnt); 2636 array_verify (EV_A_ (W *)checks, checkcnt);
2637#endif
1767 2638
1768# if 0 2639# if 0
2640#if EV_CHILD_ENABLE
1769 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2641 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1770 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2642 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2643#endif
1771# endif 2644# endif
1772#endif 2645#endif
1773} 2646}
1774#endif 2647#endif
1775 2648
1776#if EV_MULTIPLICITY 2649#if EV_MULTIPLICITY
1777struct ev_loop * 2650struct ev_loop * ecb_cold
1778ev_default_loop_init (unsigned int flags)
1779#else 2651#else
1780int 2652int
2653#endif
1781ev_default_loop (unsigned int flags) 2654ev_default_loop (unsigned int flags) EV_THROW
1782#endif
1783{ 2655{
1784 if (!ev_default_loop_ptr) 2656 if (!ev_default_loop_ptr)
1785 { 2657 {
1786#if EV_MULTIPLICITY 2658#if EV_MULTIPLICITY
1787 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2659 EV_P = ev_default_loop_ptr = &default_loop_struct;
1788#else 2660#else
1789 ev_default_loop_ptr = 1; 2661 ev_default_loop_ptr = 1;
1790#endif 2662#endif
1791 2663
1792 loop_init (EV_A_ flags); 2664 loop_init (EV_A_ flags);
1793 2665
1794 if (ev_backend (EV_A)) 2666 if (ev_backend (EV_A))
1795 { 2667 {
1796#ifndef _WIN32 2668#if EV_CHILD_ENABLE
1797 ev_signal_init (&childev, childcb, SIGCHLD); 2669 ev_signal_init (&childev, childcb, SIGCHLD);
1798 ev_set_priority (&childev, EV_MAXPRI); 2670 ev_set_priority (&childev, EV_MAXPRI);
1799 ev_signal_start (EV_A_ &childev); 2671 ev_signal_start (EV_A_ &childev);
1800 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2672 ev_unref (EV_A); /* child watcher should not keep loop alive */
1801#endif 2673#endif
… …
1806 2678
1807 return ev_default_loop_ptr; 2679 return ev_default_loop_ptr;
1808} 2680}
1809 2681
1810void 2682void
1811ev_default_destroy (void) 2683ev_loop_fork (EV_P) EV_THROW
1812{ 2684{
1813#if EV_MULTIPLICITY
1814 struct ev_loop *loop = ev_default_loop_ptr;
1815#endif
1816
1817 ev_default_loop_ptr = 0;
1818
1819#ifndef _WIN32
1820 ev_ref (EV_A); /* child watcher */
1821 ev_signal_stop (EV_A_ &childev);
1822#endif
1823
1824 loop_destroy (EV_A);
1825}
1826
1827void
1828ev_default_fork (void)
1829{
1830#if EV_MULTIPLICITY
1831 struct ev_loop *loop = ev_default_loop_ptr;
1832#endif
1833
1834 postfork = 1; /* must be in line with ev_loop_fork */ 2685 postfork = 1; /* must be in line with ev_default_fork */
1835} 2686}
1836 2687
1837/*****************************************************************************/ 2688/*****************************************************************************/
1838 2689
1839void 2690void
… …
1841{ 2692{
1842 EV_CB_INVOKE ((W)w, revents); 2693 EV_CB_INVOKE ((W)w, revents);
1843} 2694}
1844 2695
1845unsigned int 2696unsigned int
1846ev_pending_count (EV_P) 2697ev_pending_count (EV_P) EV_THROW
1847{ 2698{
1848 int pri; 2699 int pri;
1849 unsigned int count = 0; 2700 unsigned int count = 0;
1850 2701
1851 for (pri = NUMPRI; pri--; ) 2702 for (pri = NUMPRI; pri--; )
… …
1855} 2706}
1856 2707
1857void noinline 2708void noinline
1858ev_invoke_pending (EV_P) 2709ev_invoke_pending (EV_P)
1859{ 2710{
1860 int pri; 2711 for (pendingpri = NUMPRI; pendingpri--; ) /* pendingpri is modified during the loop */
1861
1862 for (pri = NUMPRI; pri--; )
1863 while (pendingcnt [pri]) 2712 while (pendingcnt [pendingpri])
1864 { 2713 {
1865 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2714 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1866
1867 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1868 /* ^ this is no longer true, as pending_w could be here */
1869 2715
1870 p->w->pending = 0; 2716 p->w->pending = 0;
1871 EV_CB_INVOKE (p->w, p->events); 2717 EV_CB_INVOKE (p->w, p->events);
1872 EV_FREQUENT_CHECK; 2718 EV_FREQUENT_CHECK;
1873 } 2719 }
… …
1930 EV_FREQUENT_CHECK; 2776 EV_FREQUENT_CHECK;
1931 feed_reverse (EV_A_ (W)w); 2777 feed_reverse (EV_A_ (W)w);
1932 } 2778 }
1933 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2779 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1934 2780
1935 feed_reverse_done (EV_A_ EV_TIMEOUT); 2781 feed_reverse_done (EV_A_ EV_TIMER);
1936 } 2782 }
1937} 2783}
1938 2784
1939#if EV_PERIODIC_ENABLE 2785#if EV_PERIODIC_ENABLE
2786
2787static void noinline
2788periodic_recalc (EV_P_ ev_periodic *w)
2789{
2790 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2791 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2792
2793 /* the above almost always errs on the low side */
2794 while (at <= ev_rt_now)
2795 {
2796 ev_tstamp nat = at + w->interval;
2797
2798 /* when resolution fails us, we use ev_rt_now */
2799 if (expect_false (nat == at))
2800 {
2801 at = ev_rt_now;
2802 break;
2803 }
2804
2805 at = nat;
2806 }
2807
2808 ev_at (w) = at;
2809}
2810
1940/* make periodics pending */ 2811/* make periodics pending */
1941inline_size void 2812inline_size void
1942periodics_reify (EV_P) 2813periodics_reify (EV_P)
1943{ 2814{
1944 EV_FREQUENT_CHECK; 2815 EV_FREQUENT_CHECK;
1945 2816
1946 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2817 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1947 { 2818 {
1948 int feed_count = 0;
1949
1950 do 2819 do
1951 { 2820 {
1952 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2821 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1953 2822
1954 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 2823 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
1963 ANHE_at_cache (periodics [HEAP0]); 2832 ANHE_at_cache (periodics [HEAP0]);
1964 downheap (periodics, periodiccnt, HEAP0); 2833 downheap (periodics, periodiccnt, HEAP0);
1965 } 2834 }
1966 else if (w->interval) 2835 else if (w->interval)
1967 { 2836 {
1968 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2837 periodic_recalc (EV_A_ w);
1969 /* if next trigger time is not sufficiently in the future, put it there */
1970 /* this might happen because of floating point inexactness */
1971 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1972 {
1973 ev_at (w) += w->interval;
1974
1975 /* if interval is unreasonably low we might still have a time in the past */
1976 /* so correct this. this will make the periodic very inexact, but the user */
1977 /* has effectively asked to get triggered more often than possible */
1978 if (ev_at (w) < ev_rt_now)
1979 ev_at (w) = ev_rt_now;
1980 }
1981
1982 ANHE_at_cache (periodics [HEAP0]); 2838 ANHE_at_cache (periodics [HEAP0]);
1983 downheap (periodics, periodiccnt, HEAP0); 2839 downheap (periodics, periodiccnt, HEAP0);
1984 } 2840 }
1985 else 2841 else
1986 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2842 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1993 feed_reverse_done (EV_A_ EV_PERIODIC); 2849 feed_reverse_done (EV_A_ EV_PERIODIC);
1994 } 2850 }
1995} 2851}
1996 2852
1997/* simply recalculate all periodics */ 2853/* simply recalculate all periodics */
1998/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2854/* TODO: maybe ensure that at least one event happens when jumping forward? */
1999static void noinline 2855static void noinline ecb_cold
2000periodics_reschedule (EV_P) 2856periodics_reschedule (EV_P)
2001{ 2857{
2002 int i; 2858 int i;
2003 2859
2004 /* adjust periodics after time jump */ 2860 /* adjust periodics after time jump */
… …
2007 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2863 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2008 2864
2009 if (w->reschedule_cb) 2865 if (w->reschedule_cb)
2010 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2866 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2011 else if (w->interval) 2867 else if (w->interval)
2012 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2868 periodic_recalc (EV_A_ w);
2013 2869
2014 ANHE_at_cache (periodics [i]); 2870 ANHE_at_cache (periodics [i]);
2015 } 2871 }
2016 2872
2017 reheap (periodics, periodiccnt); 2873 reheap (periodics, periodiccnt);
2018} 2874}
2019#endif 2875#endif
2020 2876
2021/* adjust all timers by a given offset */ 2877/* adjust all timers by a given offset */
2022static void noinline 2878static void noinline ecb_cold
2023timers_reschedule (EV_P_ ev_tstamp adjust) 2879timers_reschedule (EV_P_ ev_tstamp adjust)
2024{ 2880{
2025 int i; 2881 int i;
2026 2882
2027 for (i = 0; i < timercnt; ++i) 2883 for (i = 0; i < timercnt; ++i)
… …
2031 ANHE_at_cache (*he); 2887 ANHE_at_cache (*he);
2032 } 2888 }
2033} 2889}
2034 2890
2035/* fetch new monotonic and realtime times from the kernel */ 2891/* fetch new monotonic and realtime times from the kernel */
2036/* also detetc if there was a timejump, and act accordingly */ 2892/* also detect if there was a timejump, and act accordingly */
2037inline_speed void 2893inline_speed void
2038time_update (EV_P_ ev_tstamp max_block) 2894time_update (EV_P_ ev_tstamp max_block)
2039{ 2895{
2040#if EV_USE_MONOTONIC 2896#if EV_USE_MONOTONIC
2041 if (expect_true (have_monotonic)) 2897 if (expect_true (have_monotonic))
… …
2064 * doesn't hurt either as we only do this on time-jumps or 2920 * doesn't hurt either as we only do this on time-jumps or
2065 * in the unlikely event of having been preempted here. 2921 * in the unlikely event of having been preempted here.
2066 */ 2922 */
2067 for (i = 4; --i; ) 2923 for (i = 4; --i; )
2068 { 2924 {
2925 ev_tstamp diff;
2069 rtmn_diff = ev_rt_now - mn_now; 2926 rtmn_diff = ev_rt_now - mn_now;
2070 2927
2928 diff = odiff - rtmn_diff;
2929
2071 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2930 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2072 return; /* all is well */ 2931 return; /* all is well */
2073 2932
2074 ev_rt_now = ev_time (); 2933 ev_rt_now = ev_time ();
2075 mn_now = get_clock (); 2934 mn_now = get_clock ();
2076 now_floor = mn_now; 2935 now_floor = mn_now;
… …
2098 2957
2099 mn_now = ev_rt_now; 2958 mn_now = ev_rt_now;
2100 } 2959 }
2101} 2960}
2102 2961
2103void 2962int
2104ev_loop (EV_P_ int flags) 2963ev_run (EV_P_ int flags)
2105{ 2964{
2106#if EV_MINIMAL < 2 2965#if EV_FEATURE_API
2107 ++loop_depth; 2966 ++loop_depth;
2108#endif 2967#endif
2109 2968
2110 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 2969 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2111 2970
2112 loop_done = EVUNLOOP_CANCEL; 2971 loop_done = EVBREAK_CANCEL;
2113 2972
2114 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 2973 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2115 2974
2116 do 2975 do
2117 { 2976 {
2118#if EV_VERIFY >= 2 2977#if EV_VERIFY >= 2
2119 ev_loop_verify (EV_A); 2978 ev_verify (EV_A);
2120#endif 2979#endif
2121 2980
2122#ifndef _WIN32 2981#ifndef _WIN32
2123 if (expect_false (curpid)) /* penalise the forking check even more */ 2982 if (expect_false (curpid)) /* penalise the forking check even more */
2124 if (expect_false (getpid () != curpid)) 2983 if (expect_false (getpid () != curpid))
… …
2136 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2995 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2137 EV_INVOKE_PENDING; 2996 EV_INVOKE_PENDING;
2138 } 2997 }
2139#endif 2998#endif
2140 2999
3000#if EV_PREPARE_ENABLE
2141 /* queue prepare watchers (and execute them) */ 3001 /* queue prepare watchers (and execute them) */
2142 if (expect_false (preparecnt)) 3002 if (expect_false (preparecnt))
2143 { 3003 {
2144 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3004 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2145 EV_INVOKE_PENDING; 3005 EV_INVOKE_PENDING;
2146 } 3006 }
3007#endif
2147 3008
2148 if (expect_false (loop_done)) 3009 if (expect_false (loop_done))
2149 break; 3010 break;
2150 3011
2151 /* we might have forked, so reify kernel state if necessary */ 3012 /* we might have forked, so reify kernel state if necessary */
… …
2158 /* calculate blocking time */ 3019 /* calculate blocking time */
2159 { 3020 {
2160 ev_tstamp waittime = 0.; 3021 ev_tstamp waittime = 0.;
2161 ev_tstamp sleeptime = 0.; 3022 ev_tstamp sleeptime = 0.;
2162 3023
3024 /* remember old timestamp for io_blocktime calculation */
3025 ev_tstamp prev_mn_now = mn_now;
3026
3027 /* update time to cancel out callback processing overhead */
3028 time_update (EV_A_ 1e100);
3029
3030 /* from now on, we want a pipe-wake-up */
3031 pipe_write_wanted = 1;
3032
3033 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3034
2163 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3035 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2164 { 3036 {
2165 /* remember old timestamp for io_blocktime calculation */
2166 ev_tstamp prev_mn_now = mn_now;
2167
2168 /* update time to cancel out callback processing overhead */
2169 time_update (EV_A_ 1e100);
2170
2171 waittime = MAX_BLOCKTIME; 3037 waittime = MAX_BLOCKTIME;
2172 3038
2173 if (timercnt) 3039 if (timercnt)
2174 { 3040 {
2175 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3041 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2176 if (waittime > to) waittime = to; 3042 if (waittime > to) waittime = to;
2177 } 3043 }
2178 3044
2179#if EV_PERIODIC_ENABLE 3045#if EV_PERIODIC_ENABLE
2180 if (periodiccnt) 3046 if (periodiccnt)
2181 { 3047 {
2182 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3048 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2183 if (waittime > to) waittime = to; 3049 if (waittime > to) waittime = to;
2184 } 3050 }
2185#endif 3051#endif
2186 3052
2187 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3053 /* don't let timeouts decrease the waittime below timeout_blocktime */
2188 if (expect_false (waittime < timeout_blocktime)) 3054 if (expect_false (waittime < timeout_blocktime))
2189 waittime = timeout_blocktime; 3055 waittime = timeout_blocktime;
3056
3057 /* at this point, we NEED to wait, so we have to ensure */
3058 /* to pass a minimum nonzero value to the backend */
3059 if (expect_false (waittime < backend_mintime))
3060 waittime = backend_mintime;
2190 3061
2191 /* extra check because io_blocktime is commonly 0 */ 3062 /* extra check because io_blocktime is commonly 0 */
2192 if (expect_false (io_blocktime)) 3063 if (expect_false (io_blocktime))
2193 { 3064 {
2194 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3065 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2195 3066
2196 if (sleeptime > waittime - backend_fudge) 3067 if (sleeptime > waittime - backend_mintime)
2197 sleeptime = waittime - backend_fudge; 3068 sleeptime = waittime - backend_mintime;
2198 3069
2199 if (expect_true (sleeptime > 0.)) 3070 if (expect_true (sleeptime > 0.))
2200 { 3071 {
2201 ev_sleep (sleeptime); 3072 ev_sleep (sleeptime);
2202 waittime -= sleeptime; 3073 waittime -= sleeptime;
2203 } 3074 }
2204 } 3075 }
2205 } 3076 }
2206 3077
2207#if EV_MINIMAL < 2 3078#if EV_FEATURE_API
2208 ++loop_count; 3079 ++loop_count;
2209#endif 3080#endif
2210 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3081 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2211 backend_poll (EV_A_ waittime); 3082 backend_poll (EV_A_ waittime);
2212 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3083 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3084
3085 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3086
3087 if (pipe_write_skipped)
3088 {
3089 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3090 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3091 }
3092
2213 3093
2214 /* update ev_rt_now, do magic */ 3094 /* update ev_rt_now, do magic */
2215 time_update (EV_A_ waittime + sleeptime); 3095 time_update (EV_A_ waittime + sleeptime);
2216 } 3096 }
2217 3097
… …
2224#if EV_IDLE_ENABLE 3104#if EV_IDLE_ENABLE
2225 /* queue idle watchers unless other events are pending */ 3105 /* queue idle watchers unless other events are pending */
2226 idle_reify (EV_A); 3106 idle_reify (EV_A);
2227#endif 3107#endif
2228 3108
3109#if EV_CHECK_ENABLE
2229 /* queue check watchers, to be executed first */ 3110 /* queue check watchers, to be executed first */
2230 if (expect_false (checkcnt)) 3111 if (expect_false (checkcnt))
2231 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3112 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3113#endif
2232 3114
2233 EV_INVOKE_PENDING; 3115 EV_INVOKE_PENDING;
2234 } 3116 }
2235 while (expect_true ( 3117 while (expect_true (
2236 activecnt 3118 activecnt
2237 && !loop_done 3119 && !loop_done
2238 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3120 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2239 )); 3121 ));
2240 3122
2241 if (loop_done == EVUNLOOP_ONE) 3123 if (loop_done == EVBREAK_ONE)
2242 loop_done = EVUNLOOP_CANCEL; 3124 loop_done = EVBREAK_CANCEL;
2243 3125
2244#if EV_MINIMAL < 2 3126#if EV_FEATURE_API
2245 --loop_depth; 3127 --loop_depth;
2246#endif 3128#endif
3129
3130 return activecnt;
2247} 3131}
2248 3132
2249void 3133void
2250ev_unloop (EV_P_ int how) 3134ev_break (EV_P_ int how) EV_THROW
2251{ 3135{
2252 loop_done = how; 3136 loop_done = how;
2253} 3137}
2254 3138
2255void 3139void
2256ev_ref (EV_P) 3140ev_ref (EV_P) EV_THROW
2257{ 3141{
2258 ++activecnt; 3142 ++activecnt;
2259} 3143}
2260 3144
2261void 3145void
2262ev_unref (EV_P) 3146ev_unref (EV_P) EV_THROW
2263{ 3147{
2264 --activecnt; 3148 --activecnt;
2265} 3149}
2266 3150
2267void 3151void
2268ev_now_update (EV_P) 3152ev_now_update (EV_P) EV_THROW
2269{ 3153{
2270 time_update (EV_A_ 1e100); 3154 time_update (EV_A_ 1e100);
2271} 3155}
2272 3156
2273void 3157void
2274ev_suspend (EV_P) 3158ev_suspend (EV_P) EV_THROW
2275{ 3159{
2276 ev_now_update (EV_A); 3160 ev_now_update (EV_A);
2277} 3161}
2278 3162
2279void 3163void
2280ev_resume (EV_P) 3164ev_resume (EV_P) EV_THROW
2281{ 3165{
2282 ev_tstamp mn_prev = mn_now; 3166 ev_tstamp mn_prev = mn_now;
2283 3167
2284 ev_now_update (EV_A); 3168 ev_now_update (EV_A);
2285 timers_reschedule (EV_A_ mn_now - mn_prev); 3169 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2302inline_size void 3186inline_size void
2303wlist_del (WL *head, WL elem) 3187wlist_del (WL *head, WL elem)
2304{ 3188{
2305 while (*head) 3189 while (*head)
2306 { 3190 {
2307 if (*head == elem) 3191 if (expect_true (*head == elem))
2308 { 3192 {
2309 *head = elem->next; 3193 *head = elem->next;
2310 return; 3194 break;
2311 } 3195 }
2312 3196
2313 head = &(*head)->next; 3197 head = &(*head)->next;
2314 } 3198 }
2315} 3199}
… …
2324 w->pending = 0; 3208 w->pending = 0;
2325 } 3209 }
2326} 3210}
2327 3211
2328int 3212int
2329ev_clear_pending (EV_P_ void *w) 3213ev_clear_pending (EV_P_ void *w) EV_THROW
2330{ 3214{
2331 W w_ = (W)w; 3215 W w_ = (W)w;
2332 int pending = w_->pending; 3216 int pending = w_->pending;
2333 3217
2334 if (expect_true (pending)) 3218 if (expect_true (pending))
… …
2367} 3251}
2368 3252
2369/*****************************************************************************/ 3253/*****************************************************************************/
2370 3254
2371void noinline 3255void noinline
2372ev_io_start (EV_P_ ev_io *w) 3256ev_io_start (EV_P_ ev_io *w) EV_THROW
2373{ 3257{
2374 int fd = w->fd; 3258 int fd = w->fd;
2375 3259
2376 if (expect_false (ev_is_active (w))) 3260 if (expect_false (ev_is_active (w)))
2377 return; 3261 return;
2378 3262
2379 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3263 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2380 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3264 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2381 3265
2382 EV_FREQUENT_CHECK; 3266 EV_FREQUENT_CHECK;
2383 3267
2384 ev_start (EV_A_ (W)w, 1); 3268 ev_start (EV_A_ (W)w, 1);
2385 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3269 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2386 wlist_add (&anfds[fd].head, (WL)w); 3270 wlist_add (&anfds[fd].head, (WL)w);
2387 3271
3272 /* common bug, apparently */
3273 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3274
2388 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3275 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2389 w->events &= ~EV__IOFDSET; 3276 w->events &= ~EV__IOFDSET;
2390 3277
2391 EV_FREQUENT_CHECK; 3278 EV_FREQUENT_CHECK;
2392} 3279}
2393 3280
2394void noinline 3281void noinline
2395ev_io_stop (EV_P_ ev_io *w) 3282ev_io_stop (EV_P_ ev_io *w) EV_THROW
2396{ 3283{
2397 clear_pending (EV_A_ (W)w); 3284 clear_pending (EV_A_ (W)w);
2398 if (expect_false (!ev_is_active (w))) 3285 if (expect_false (!ev_is_active (w)))
2399 return; 3286 return;
2400 3287
… …
2403 EV_FREQUENT_CHECK; 3290 EV_FREQUENT_CHECK;
2404 3291
2405 wlist_del (&anfds[w->fd].head, (WL)w); 3292 wlist_del (&anfds[w->fd].head, (WL)w);
2406 ev_stop (EV_A_ (W)w); 3293 ev_stop (EV_A_ (W)w);
2407 3294
2408 fd_change (EV_A_ w->fd, 1); 3295 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2409 3296
2410 EV_FREQUENT_CHECK; 3297 EV_FREQUENT_CHECK;
2411} 3298}
2412 3299
2413void noinline 3300void noinline
2414ev_timer_start (EV_P_ ev_timer *w) 3301ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2415{ 3302{
2416 if (expect_false (ev_is_active (w))) 3303 if (expect_false (ev_is_active (w)))
2417 return; 3304 return;
2418 3305
2419 ev_at (w) += mn_now; 3306 ev_at (w) += mn_now;
… …
2433 3320
2434 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3321 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2435} 3322}
2436 3323
2437void noinline 3324void noinline
2438ev_timer_stop (EV_P_ ev_timer *w) 3325ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2439{ 3326{
2440 clear_pending (EV_A_ (W)w); 3327 clear_pending (EV_A_ (W)w);
2441 if (expect_false (!ev_is_active (w))) 3328 if (expect_false (!ev_is_active (w)))
2442 return; 3329 return;
2443 3330
… …
2455 timers [active] = timers [timercnt + HEAP0]; 3342 timers [active] = timers [timercnt + HEAP0];
2456 adjustheap (timers, timercnt, active); 3343 adjustheap (timers, timercnt, active);
2457 } 3344 }
2458 } 3345 }
2459 3346
2460 EV_FREQUENT_CHECK;
2461
2462 ev_at (w) -= mn_now; 3347 ev_at (w) -= mn_now;
2463 3348
2464 ev_stop (EV_A_ (W)w); 3349 ev_stop (EV_A_ (W)w);
3350
3351 EV_FREQUENT_CHECK;
2465} 3352}
2466 3353
2467void noinline 3354void noinline
2468ev_timer_again (EV_P_ ev_timer *w) 3355ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2469{ 3356{
2470 EV_FREQUENT_CHECK; 3357 EV_FREQUENT_CHECK;
3358
3359 clear_pending (EV_A_ (W)w);
2471 3360
2472 if (ev_is_active (w)) 3361 if (ev_is_active (w))
2473 { 3362 {
2474 if (w->repeat) 3363 if (w->repeat)
2475 { 3364 {
… …
2488 3377
2489 EV_FREQUENT_CHECK; 3378 EV_FREQUENT_CHECK;
2490} 3379}
2491 3380
2492ev_tstamp 3381ev_tstamp
2493ev_timer_remaining (EV_P_ ev_timer *w) 3382ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2494{ 3383{
2495 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3384 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2496} 3385}
2497 3386
2498#if EV_PERIODIC_ENABLE 3387#if EV_PERIODIC_ENABLE
2499void noinline 3388void noinline
2500ev_periodic_start (EV_P_ ev_periodic *w) 3389ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2501{ 3390{
2502 if (expect_false (ev_is_active (w))) 3391 if (expect_false (ev_is_active (w)))
2503 return; 3392 return;
2504 3393
2505 if (w->reschedule_cb) 3394 if (w->reschedule_cb)
2506 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3395 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2507 else if (w->interval) 3396 else if (w->interval)
2508 { 3397 {
2509 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3398 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2510 /* this formula differs from the one in periodic_reify because we do not always round up */ 3399 periodic_recalc (EV_A_ w);
2511 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2512 } 3400 }
2513 else 3401 else
2514 ev_at (w) = w->offset; 3402 ev_at (w) = w->offset;
2515 3403
2516 EV_FREQUENT_CHECK; 3404 EV_FREQUENT_CHECK;
… …
2526 3414
2527 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3415 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2528} 3416}
2529 3417
2530void noinline 3418void noinline
2531ev_periodic_stop (EV_P_ ev_periodic *w) 3419ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2532{ 3420{
2533 clear_pending (EV_A_ (W)w); 3421 clear_pending (EV_A_ (W)w);
2534 if (expect_false (!ev_is_active (w))) 3422 if (expect_false (!ev_is_active (w)))
2535 return; 3423 return;
2536 3424
… …
2548 periodics [active] = periodics [periodiccnt + HEAP0]; 3436 periodics [active] = periodics [periodiccnt + HEAP0];
2549 adjustheap (periodics, periodiccnt, active); 3437 adjustheap (periodics, periodiccnt, active);
2550 } 3438 }
2551 } 3439 }
2552 3440
2553 EV_FREQUENT_CHECK;
2554
2555 ev_stop (EV_A_ (W)w); 3441 ev_stop (EV_A_ (W)w);
3442
3443 EV_FREQUENT_CHECK;
2556} 3444}
2557 3445
2558void noinline 3446void noinline
2559ev_periodic_again (EV_P_ ev_periodic *w) 3447ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2560{ 3448{
2561 /* TODO: use adjustheap and recalculation */ 3449 /* TODO: use adjustheap and recalculation */
2562 ev_periodic_stop (EV_A_ w); 3450 ev_periodic_stop (EV_A_ w);
2563 ev_periodic_start (EV_A_ w); 3451 ev_periodic_start (EV_A_ w);
2564} 3452}
… …
2566 3454
2567#ifndef SA_RESTART 3455#ifndef SA_RESTART
2568# define SA_RESTART 0 3456# define SA_RESTART 0
2569#endif 3457#endif
2570 3458
3459#if EV_SIGNAL_ENABLE
3460
2571void noinline 3461void noinline
2572ev_signal_start (EV_P_ ev_signal *w) 3462ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2573{ 3463{
2574#if EV_MULTIPLICITY
2575 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2576#endif
2577 if (expect_false (ev_is_active (w))) 3464 if (expect_false (ev_is_active (w)))
2578 return; 3465 return;
2579 3466
2580 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 3467 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2581 3468
2582 evpipe_init (EV_A); 3469#if EV_MULTIPLICITY
3470 assert (("libev: a signal must not be attached to two different loops",
3471 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2583 3472
2584 EV_FREQUENT_CHECK; 3473 signals [w->signum - 1].loop = EV_A;
3474#endif
2585 3475
3476 EV_FREQUENT_CHECK;
3477
3478#if EV_USE_SIGNALFD
3479 if (sigfd == -2)
2586 { 3480 {
2587#ifndef _WIN32 3481 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2588 sigset_t full, prev; 3482 if (sigfd < 0 && errno == EINVAL)
2589 sigfillset (&full); 3483 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2590 sigprocmask (SIG_SETMASK, &full, &prev);
2591#endif
2592 3484
2593 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 3485 if (sigfd >= 0)
3486 {
3487 fd_intern (sigfd); /* doing it twice will not hurt */
2594 3488
2595#ifndef _WIN32 3489 sigemptyset (&sigfd_set);
2596 sigprocmask (SIG_SETMASK, &prev, 0); 3490
2597#endif 3491 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3492 ev_set_priority (&sigfd_w, EV_MAXPRI);
3493 ev_io_start (EV_A_ &sigfd_w);
3494 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3495 }
2598 } 3496 }
3497
3498 if (sigfd >= 0)
3499 {
3500 /* TODO: check .head */
3501 sigaddset (&sigfd_set, w->signum);
3502 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3503
3504 signalfd (sigfd, &sigfd_set, 0);
3505 }
3506#endif
2599 3507
2600 ev_start (EV_A_ (W)w, 1); 3508 ev_start (EV_A_ (W)w, 1);
2601 wlist_add (&signals [w->signum - 1].head, (WL)w); 3509 wlist_add (&signals [w->signum - 1].head, (WL)w);
2602 3510
2603 if (!((WL)w)->next) 3511 if (!((WL)w)->next)
3512# if EV_USE_SIGNALFD
3513 if (sigfd < 0) /*TODO*/
3514# endif
2604 { 3515 {
2605#if _WIN32 3516# ifdef _WIN32
3517 evpipe_init (EV_A);
3518
2606 signal (w->signum, ev_sighandler); 3519 signal (w->signum, ev_sighandler);
2607#else 3520# else
2608 struct sigaction sa = { }; 3521 struct sigaction sa;
3522
3523 evpipe_init (EV_A);
3524
2609 sa.sa_handler = ev_sighandler; 3525 sa.sa_handler = ev_sighandler;
2610 sigfillset (&sa.sa_mask); 3526 sigfillset (&sa.sa_mask);
2611 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3527 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2612 sigaction (w->signum, &sa, 0); 3528 sigaction (w->signum, &sa, 0);
3529
3530 if (origflags & EVFLAG_NOSIGMASK)
3531 {
3532 sigemptyset (&sa.sa_mask);
3533 sigaddset (&sa.sa_mask, w->signum);
3534 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3535 }
2613#endif 3536#endif
2614 } 3537 }
2615 3538
2616 EV_FREQUENT_CHECK; 3539 EV_FREQUENT_CHECK;
2617} 3540}
2618 3541
2619void noinline 3542void noinline
2620ev_signal_stop (EV_P_ ev_signal *w) 3543ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2621{ 3544{
2622 clear_pending (EV_A_ (W)w); 3545 clear_pending (EV_A_ (W)w);
2623 if (expect_false (!ev_is_active (w))) 3546 if (expect_false (!ev_is_active (w)))
2624 return; 3547 return;
2625 3548
… …
2627 3550
2628 wlist_del (&signals [w->signum - 1].head, (WL)w); 3551 wlist_del (&signals [w->signum - 1].head, (WL)w);
2629 ev_stop (EV_A_ (W)w); 3552 ev_stop (EV_A_ (W)w);
2630 3553
2631 if (!signals [w->signum - 1].head) 3554 if (!signals [w->signum - 1].head)
3555 {
3556#if EV_MULTIPLICITY
3557 signals [w->signum - 1].loop = 0; /* unattach from signal */
3558#endif
3559#if EV_USE_SIGNALFD
3560 if (sigfd >= 0)
3561 {
3562 sigset_t ss;
3563
3564 sigemptyset (&ss);
3565 sigaddset (&ss, w->signum);
3566 sigdelset (&sigfd_set, w->signum);
3567
3568 signalfd (sigfd, &sigfd_set, 0);
3569 sigprocmask (SIG_UNBLOCK, &ss, 0);
3570 }
3571 else
3572#endif
2632 signal (w->signum, SIG_DFL); 3573 signal (w->signum, SIG_DFL);
3574 }
2633 3575
2634 EV_FREQUENT_CHECK; 3576 EV_FREQUENT_CHECK;
2635} 3577}
3578
3579#endif
3580
3581#if EV_CHILD_ENABLE
2636 3582
2637void 3583void
2638ev_child_start (EV_P_ ev_child *w) 3584ev_child_start (EV_P_ ev_child *w) EV_THROW
2639{ 3585{
2640#if EV_MULTIPLICITY 3586#if EV_MULTIPLICITY
2641 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3587 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2642#endif 3588#endif
2643 if (expect_false (ev_is_active (w))) 3589 if (expect_false (ev_is_active (w)))
2644 return; 3590 return;
2645 3591
2646 EV_FREQUENT_CHECK; 3592 EV_FREQUENT_CHECK;
2647 3593
2648 ev_start (EV_A_ (W)w, 1); 3594 ev_start (EV_A_ (W)w, 1);
2649 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3595 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2650 3596
2651 EV_FREQUENT_CHECK; 3597 EV_FREQUENT_CHECK;
2652} 3598}
2653 3599
2654void 3600void
2655ev_child_stop (EV_P_ ev_child *w) 3601ev_child_stop (EV_P_ ev_child *w) EV_THROW
2656{ 3602{
2657 clear_pending (EV_A_ (W)w); 3603 clear_pending (EV_A_ (W)w);
2658 if (expect_false (!ev_is_active (w))) 3604 if (expect_false (!ev_is_active (w)))
2659 return; 3605 return;
2660 3606
2661 EV_FREQUENT_CHECK; 3607 EV_FREQUENT_CHECK;
2662 3608
2663 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3609 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2664 ev_stop (EV_A_ (W)w); 3610 ev_stop (EV_A_ (W)w);
2665 3611
2666 EV_FREQUENT_CHECK; 3612 EV_FREQUENT_CHECK;
2667} 3613}
3614
3615#endif
2668 3616
2669#if EV_STAT_ENABLE 3617#if EV_STAT_ENABLE
2670 3618
2671# ifdef _WIN32 3619# ifdef _WIN32
2672# undef lstat 3620# undef lstat
… …
2678#define MIN_STAT_INTERVAL 0.1074891 3626#define MIN_STAT_INTERVAL 0.1074891
2679 3627
2680static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3628static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2681 3629
2682#if EV_USE_INOTIFY 3630#if EV_USE_INOTIFY
2683# define EV_INOTIFY_BUFSIZE 8192 3631
3632/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3633# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2684 3634
2685static void noinline 3635static void noinline
2686infy_add (EV_P_ ev_stat *w) 3636infy_add (EV_P_ ev_stat *w)
2687{ 3637{
2688 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); 3638 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);
2689 3639
2690 if (w->wd < 0) 3640 if (w->wd >= 0)
3641 {
3642 struct statfs sfs;
3643
3644 /* now local changes will be tracked by inotify, but remote changes won't */
3645 /* unless the filesystem is known to be local, we therefore still poll */
3646 /* also do poll on <2.6.25, but with normal frequency */
3647
3648 if (!fs_2625)
3649 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3650 else if (!statfs (w->path, &sfs)
3651 && (sfs.f_type == 0x1373 /* devfs */
3652 || sfs.f_type == 0xEF53 /* ext2/3 */
3653 || sfs.f_type == 0x3153464a /* jfs */
3654 || sfs.f_type == 0x52654973 /* reiser3 */
3655 || sfs.f_type == 0x01021994 /* tempfs */
3656 || sfs.f_type == 0x58465342 /* xfs */))
3657 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3658 else
3659 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2691 { 3660 }
3661 else
3662 {
3663 /* can't use inotify, continue to stat */
2692 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3664 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2693 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2694 3665
2695 /* monitor some parent directory for speedup hints */ 3666 /* if path is not there, monitor some parent directory for speedup hints */
2696 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3667 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2697 /* but an efficiency issue only */ 3668 /* but an efficiency issue only */
2698 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3669 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2699 { 3670 {
2700 char path [4096]; 3671 char path [4096];
… …
2710 if (!pend || pend == path) 3681 if (!pend || pend == path)
2711 break; 3682 break;
2712 3683
2713 *pend = 0; 3684 *pend = 0;
2714 w->wd = inotify_add_watch (fs_fd, path, mask); 3685 w->wd = inotify_add_watch (fs_fd, path, mask);
2715 } 3686 }
2716 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3687 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2717 } 3688 }
2718 } 3689 }
2719 3690
2720 if (w->wd >= 0) 3691 if (w->wd >= 0)
2721 {
2722 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3692 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2723 3693
2724 /* now local changes will be tracked by inotify, but remote changes won't */ 3694 /* now re-arm timer, if required */
2725 /* unless the filesystem it known to be local, we therefore still poll */ 3695 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2726 /* also do poll on <2.6.25, but with normal frequency */
2727 struct statfs sfs;
2728
2729 if (fs_2625 && !statfs (w->path, &sfs))
2730 if (sfs.f_type == 0x1373 /* devfs */
2731 || sfs.f_type == 0xEF53 /* ext2/3 */
2732 || sfs.f_type == 0x3153464a /* jfs */
2733 || sfs.f_type == 0x52654973 /* reiser3 */
2734 || sfs.f_type == 0x01021994 /* tempfs */
2735 || sfs.f_type == 0x58465342 /* xfs */)
2736 return;
2737
2738 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2739 ev_timer_again (EV_A_ &w->timer); 3696 ev_timer_again (EV_A_ &w->timer);
2740 } 3697 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2741} 3698}
2742 3699
2743static void noinline 3700static void noinline
2744infy_del (EV_P_ ev_stat *w) 3701infy_del (EV_P_ ev_stat *w)
2745{ 3702{
… …
2748 3705
2749 if (wd < 0) 3706 if (wd < 0)
2750 return; 3707 return;
2751 3708
2752 w->wd = -2; 3709 w->wd = -2;
2753 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3710 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2754 wlist_del (&fs_hash [slot].head, (WL)w); 3711 wlist_del (&fs_hash [slot].head, (WL)w);
2755 3712
2756 /* remove this watcher, if others are watching it, they will rearm */ 3713 /* remove this watcher, if others are watching it, they will rearm */
2757 inotify_rm_watch (fs_fd, wd); 3714 inotify_rm_watch (fs_fd, wd);
2758} 3715}
… …
2760static void noinline 3717static void noinline
2761infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3718infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2762{ 3719{
2763 if (slot < 0) 3720 if (slot < 0)
2764 /* overflow, need to check for all hash slots */ 3721 /* overflow, need to check for all hash slots */
2765 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3722 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2766 infy_wd (EV_A_ slot, wd, ev); 3723 infy_wd (EV_A_ slot, wd, ev);
2767 else 3724 else
2768 { 3725 {
2769 WL w_; 3726 WL w_;
2770 3727
2771 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3728 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2772 { 3729 {
2773 ev_stat *w = (ev_stat *)w_; 3730 ev_stat *w = (ev_stat *)w_;
2774 w_ = w_->next; /* lets us remove this watcher and all before it */ 3731 w_ = w_->next; /* lets us remove this watcher and all before it */
2775 3732
2776 if (w->wd == wd || wd == -1) 3733 if (w->wd == wd || wd == -1)
2777 { 3734 {
2778 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3735 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2779 { 3736 {
2780 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3737 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2781 w->wd = -1; 3738 w->wd = -1;
2782 infy_add (EV_A_ w); /* re-add, no matter what */ 3739 infy_add (EV_A_ w); /* re-add, no matter what */
2783 } 3740 }
2784 3741
2785 stat_timer_cb (EV_A_ &w->timer, 0); 3742 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2790 3747
2791static void 3748static void
2792infy_cb (EV_P_ ev_io *w, int revents) 3749infy_cb (EV_P_ ev_io *w, int revents)
2793{ 3750{
2794 char buf [EV_INOTIFY_BUFSIZE]; 3751 char buf [EV_INOTIFY_BUFSIZE];
2795 struct inotify_event *ev = (struct inotify_event *)buf;
2796 int ofs; 3752 int ofs;
2797 int len = read (fs_fd, buf, sizeof (buf)); 3753 int len = read (fs_fd, buf, sizeof (buf));
2798 3754
2799 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3755 for (ofs = 0; ofs < len; )
3756 {
3757 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2800 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3758 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3759 ofs += sizeof (struct inotify_event) + ev->len;
3760 }
2801} 3761}
2802 3762
2803inline_size void 3763inline_size void ecb_cold
2804check_2625 (EV_P) 3764ev_check_2625 (EV_P)
2805{ 3765{
2806 /* kernels < 2.6.25 are borked 3766 /* kernels < 2.6.25 are borked
2807 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3767 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2808 */ 3768 */
2809 struct utsname buf; 3769 if (ev_linux_version () < 0x020619)
2810 int major, minor, micro;
2811
2812 if (uname (&buf))
2813 return; 3770 return;
2814 3771
2815 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2816 return;
2817
2818 if (major < 2
2819 || (major == 2 && minor < 6)
2820 || (major == 2 && minor == 6 && micro < 25))
2821 return;
2822
2823 fs_2625 = 1; 3772 fs_2625 = 1;
3773}
3774
3775inline_size int
3776infy_newfd (void)
3777{
3778#if defined IN_CLOEXEC && defined IN_NONBLOCK
3779 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3780 if (fd >= 0)
3781 return fd;
3782#endif
3783 return inotify_init ();
2824} 3784}
2825 3785
2826inline_size void 3786inline_size void
2827infy_init (EV_P) 3787infy_init (EV_P)
2828{ 3788{
2829 if (fs_fd != -2) 3789 if (fs_fd != -2)
2830 return; 3790 return;
2831 3791
2832 fs_fd = -1; 3792 fs_fd = -1;
2833 3793
2834 check_2625 (EV_A); 3794 ev_check_2625 (EV_A);
2835 3795
2836 fs_fd = inotify_init (); 3796 fs_fd = infy_newfd ();
2837 3797
2838 if (fs_fd >= 0) 3798 if (fs_fd >= 0)
2839 { 3799 {
3800 fd_intern (fs_fd);
2840 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3801 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2841 ev_set_priority (&fs_w, EV_MAXPRI); 3802 ev_set_priority (&fs_w, EV_MAXPRI);
2842 ev_io_start (EV_A_ &fs_w); 3803 ev_io_start (EV_A_ &fs_w);
3804 ev_unref (EV_A);
2843 } 3805 }
2844} 3806}
2845 3807
2846inline_size void 3808inline_size void
2847infy_fork (EV_P) 3809infy_fork (EV_P)
… …
2849 int slot; 3811 int slot;
2850 3812
2851 if (fs_fd < 0) 3813 if (fs_fd < 0)
2852 return; 3814 return;
2853 3815
3816 ev_ref (EV_A);
3817 ev_io_stop (EV_A_ &fs_w);
2854 close (fs_fd); 3818 close (fs_fd);
2855 fs_fd = inotify_init (); 3819 fs_fd = infy_newfd ();
2856 3820
3821 if (fs_fd >= 0)
3822 {
3823 fd_intern (fs_fd);
3824 ev_io_set (&fs_w, fs_fd, EV_READ);
3825 ev_io_start (EV_A_ &fs_w);
3826 ev_unref (EV_A);
3827 }
3828
2857 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3829 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2858 { 3830 {
2859 WL w_ = fs_hash [slot].head; 3831 WL w_ = fs_hash [slot].head;
2860 fs_hash [slot].head = 0; 3832 fs_hash [slot].head = 0;
2861 3833
2862 while (w_) 3834 while (w_)
… …
2867 w->wd = -1; 3839 w->wd = -1;
2868 3840
2869 if (fs_fd >= 0) 3841 if (fs_fd >= 0)
2870 infy_add (EV_A_ w); /* re-add, no matter what */ 3842 infy_add (EV_A_ w); /* re-add, no matter what */
2871 else 3843 else
3844 {
3845 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3846 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2872 ev_timer_again (EV_A_ &w->timer); 3847 ev_timer_again (EV_A_ &w->timer);
3848 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3849 }
2873 } 3850 }
2874 } 3851 }
2875} 3852}
2876 3853
2877#endif 3854#endif
… …
2881#else 3858#else
2882# define EV_LSTAT(p,b) lstat (p, b) 3859# define EV_LSTAT(p,b) lstat (p, b)
2883#endif 3860#endif
2884 3861
2885void 3862void
2886ev_stat_stat (EV_P_ ev_stat *w) 3863ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
2887{ 3864{
2888 if (lstat (w->path, &w->attr) < 0) 3865 if (lstat (w->path, &w->attr) < 0)
2889 w->attr.st_nlink = 0; 3866 w->attr.st_nlink = 0;
2890 else if (!w->attr.st_nlink) 3867 else if (!w->attr.st_nlink)
2891 w->attr.st_nlink = 1; 3868 w->attr.st_nlink = 1;
… …
2894static void noinline 3871static void noinline
2895stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3872stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2896{ 3873{
2897 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3874 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2898 3875
2899 /* we copy this here each the time so that */ 3876 ev_statdata prev = w->attr;
2900 /* prev has the old value when the callback gets invoked */
2901 w->prev = w->attr;
2902 ev_stat_stat (EV_A_ w); 3877 ev_stat_stat (EV_A_ w);
2903 3878
2904 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3879 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2905 if ( 3880 if (
2906 w->prev.st_dev != w->attr.st_dev 3881 prev.st_dev != w->attr.st_dev
2907 || w->prev.st_ino != w->attr.st_ino 3882 || prev.st_ino != w->attr.st_ino
2908 || w->prev.st_mode != w->attr.st_mode 3883 || prev.st_mode != w->attr.st_mode
2909 || w->prev.st_nlink != w->attr.st_nlink 3884 || prev.st_nlink != w->attr.st_nlink
2910 || w->prev.st_uid != w->attr.st_uid 3885 || prev.st_uid != w->attr.st_uid
2911 || w->prev.st_gid != w->attr.st_gid 3886 || prev.st_gid != w->attr.st_gid
2912 || w->prev.st_rdev != w->attr.st_rdev 3887 || prev.st_rdev != w->attr.st_rdev
2913 || w->prev.st_size != w->attr.st_size 3888 || prev.st_size != w->attr.st_size
2914 || w->prev.st_atime != w->attr.st_atime 3889 || prev.st_atime != w->attr.st_atime
2915 || w->prev.st_mtime != w->attr.st_mtime 3890 || prev.st_mtime != w->attr.st_mtime
2916 || w->prev.st_ctime != w->attr.st_ctime 3891 || prev.st_ctime != w->attr.st_ctime
2917 ) { 3892 ) {
3893 /* we only update w->prev on actual differences */
3894 /* in case we test more often than invoke the callback, */
3895 /* to ensure that prev is always different to attr */
3896 w->prev = prev;
3897
2918 #if EV_USE_INOTIFY 3898 #if EV_USE_INOTIFY
2919 if (fs_fd >= 0) 3899 if (fs_fd >= 0)
2920 { 3900 {
2921 infy_del (EV_A_ w); 3901 infy_del (EV_A_ w);
2922 infy_add (EV_A_ w); 3902 infy_add (EV_A_ w);
… …
2927 ev_feed_event (EV_A_ w, EV_STAT); 3907 ev_feed_event (EV_A_ w, EV_STAT);
2928 } 3908 }
2929} 3909}
2930 3910
2931void 3911void
2932ev_stat_start (EV_P_ ev_stat *w) 3912ev_stat_start (EV_P_ ev_stat *w) EV_THROW
2933{ 3913{
2934 if (expect_false (ev_is_active (w))) 3914 if (expect_false (ev_is_active (w)))
2935 return; 3915 return;
2936 3916
2937 ev_stat_stat (EV_A_ w); 3917 ev_stat_stat (EV_A_ w);
… …
2947 3927
2948 if (fs_fd >= 0) 3928 if (fs_fd >= 0)
2949 infy_add (EV_A_ w); 3929 infy_add (EV_A_ w);
2950 else 3930 else
2951#endif 3931#endif
3932 {
2952 ev_timer_again (EV_A_ &w->timer); 3933 ev_timer_again (EV_A_ &w->timer);
3934 ev_unref (EV_A);
3935 }
2953 3936
2954 ev_start (EV_A_ (W)w, 1); 3937 ev_start (EV_A_ (W)w, 1);
2955 3938
2956 EV_FREQUENT_CHECK; 3939 EV_FREQUENT_CHECK;
2957} 3940}
2958 3941
2959void 3942void
2960ev_stat_stop (EV_P_ ev_stat *w) 3943ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
2961{ 3944{
2962 clear_pending (EV_A_ (W)w); 3945 clear_pending (EV_A_ (W)w);
2963 if (expect_false (!ev_is_active (w))) 3946 if (expect_false (!ev_is_active (w)))
2964 return; 3947 return;
2965 3948
2966 EV_FREQUENT_CHECK; 3949 EV_FREQUENT_CHECK;
2967 3950
2968#if EV_USE_INOTIFY 3951#if EV_USE_INOTIFY
2969 infy_del (EV_A_ w); 3952 infy_del (EV_A_ w);
2970#endif 3953#endif
3954
3955 if (ev_is_active (&w->timer))
3956 {
3957 ev_ref (EV_A);
2971 ev_timer_stop (EV_A_ &w->timer); 3958 ev_timer_stop (EV_A_ &w->timer);
3959 }
2972 3960
2973 ev_stop (EV_A_ (W)w); 3961 ev_stop (EV_A_ (W)w);
2974 3962
2975 EV_FREQUENT_CHECK; 3963 EV_FREQUENT_CHECK;
2976} 3964}
2977#endif 3965#endif
2978 3966
2979#if EV_IDLE_ENABLE 3967#if EV_IDLE_ENABLE
2980void 3968void
2981ev_idle_start (EV_P_ ev_idle *w) 3969ev_idle_start (EV_P_ ev_idle *w) EV_THROW
2982{ 3970{
2983 if (expect_false (ev_is_active (w))) 3971 if (expect_false (ev_is_active (w)))
2984 return; 3972 return;
2985 3973
2986 pri_adjust (EV_A_ (W)w); 3974 pri_adjust (EV_A_ (W)w);
… …
2999 3987
3000 EV_FREQUENT_CHECK; 3988 EV_FREQUENT_CHECK;
3001} 3989}
3002 3990
3003void 3991void
3004ev_idle_stop (EV_P_ ev_idle *w) 3992ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3005{ 3993{
3006 clear_pending (EV_A_ (W)w); 3994 clear_pending (EV_A_ (W)w);
3007 if (expect_false (!ev_is_active (w))) 3995 if (expect_false (!ev_is_active (w)))
3008 return; 3996 return;
3009 3997
… …
3021 4009
3022 EV_FREQUENT_CHECK; 4010 EV_FREQUENT_CHECK;
3023} 4011}
3024#endif 4012#endif
3025 4013
4014#if EV_PREPARE_ENABLE
3026void 4015void
3027ev_prepare_start (EV_P_ ev_prepare *w) 4016ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3028{ 4017{
3029 if (expect_false (ev_is_active (w))) 4018 if (expect_false (ev_is_active (w)))
3030 return; 4019 return;
3031 4020
3032 EV_FREQUENT_CHECK; 4021 EV_FREQUENT_CHECK;
… …
3037 4026
3038 EV_FREQUENT_CHECK; 4027 EV_FREQUENT_CHECK;
3039} 4028}
3040 4029
3041void 4030void
3042ev_prepare_stop (EV_P_ ev_prepare *w) 4031ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3043{ 4032{
3044 clear_pending (EV_A_ (W)w); 4033 clear_pending (EV_A_ (W)w);
3045 if (expect_false (!ev_is_active (w))) 4034 if (expect_false (!ev_is_active (w)))
3046 return; 4035 return;
3047 4036
… …
3056 4045
3057 ev_stop (EV_A_ (W)w); 4046 ev_stop (EV_A_ (W)w);
3058 4047
3059 EV_FREQUENT_CHECK; 4048 EV_FREQUENT_CHECK;
3060} 4049}
4050#endif
3061 4051
4052#if EV_CHECK_ENABLE
3062void 4053void
3063ev_check_start (EV_P_ ev_check *w) 4054ev_check_start (EV_P_ ev_check *w) EV_THROW
3064{ 4055{
3065 if (expect_false (ev_is_active (w))) 4056 if (expect_false (ev_is_active (w)))
3066 return; 4057 return;
3067 4058
3068 EV_FREQUENT_CHECK; 4059 EV_FREQUENT_CHECK;
… …
3073 4064
3074 EV_FREQUENT_CHECK; 4065 EV_FREQUENT_CHECK;
3075} 4066}
3076 4067
3077void 4068void
3078ev_check_stop (EV_P_ ev_check *w) 4069ev_check_stop (EV_P_ ev_check *w) EV_THROW
3079{ 4070{
3080 clear_pending (EV_A_ (W)w); 4071 clear_pending (EV_A_ (W)w);
3081 if (expect_false (!ev_is_active (w))) 4072 if (expect_false (!ev_is_active (w)))
3082 return; 4073 return;
3083 4074
… …
3092 4083
3093 ev_stop (EV_A_ (W)w); 4084 ev_stop (EV_A_ (W)w);
3094 4085
3095 EV_FREQUENT_CHECK; 4086 EV_FREQUENT_CHECK;
3096} 4087}
4088#endif
3097 4089
3098#if EV_EMBED_ENABLE 4090#if EV_EMBED_ENABLE
3099void noinline 4091void noinline
3100ev_embed_sweep (EV_P_ ev_embed *w) 4092ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3101{ 4093{
3102 ev_loop (w->other, EVLOOP_NONBLOCK); 4094 ev_run (w->other, EVRUN_NOWAIT);
3103} 4095}
3104 4096
3105static void 4097static void
3106embed_io_cb (EV_P_ ev_io *io, int revents) 4098embed_io_cb (EV_P_ ev_io *io, int revents)
3107{ 4099{
3108 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4100 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3109 4101
3110 if (ev_cb (w)) 4102 if (ev_cb (w))
3111 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4103 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3112 else 4104 else
3113 ev_loop (w->other, EVLOOP_NONBLOCK); 4105 ev_run (w->other, EVRUN_NOWAIT);
3114} 4106}
3115 4107
3116static void 4108static void
3117embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4109embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3118{ 4110{
3119 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4111 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3120 4112
3121 { 4113 {
3122 struct ev_loop *loop = w->other; 4114 EV_P = w->other;
3123 4115
3124 while (fdchangecnt) 4116 while (fdchangecnt)
3125 { 4117 {
3126 fd_reify (EV_A); 4118 fd_reify (EV_A);
3127 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4119 ev_run (EV_A_ EVRUN_NOWAIT);
3128 } 4120 }
3129 } 4121 }
3130} 4122}
3131 4123
3132static void 4124static void
… …
3135 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 4127 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3136 4128
3137 ev_embed_stop (EV_A_ w); 4129 ev_embed_stop (EV_A_ w);
3138 4130
3139 { 4131 {
3140 struct ev_loop *loop = w->other; 4132 EV_P = w->other;
3141 4133
3142 ev_loop_fork (EV_A); 4134 ev_loop_fork (EV_A);
3143 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4135 ev_run (EV_A_ EVRUN_NOWAIT);
3144 } 4136 }
3145 4137
3146 ev_embed_start (EV_A_ w); 4138 ev_embed_start (EV_A_ w);
3147} 4139}
3148 4140
… …
3153 ev_idle_stop (EV_A_ idle); 4145 ev_idle_stop (EV_A_ idle);
3154} 4146}
3155#endif 4147#endif
3156 4148
3157void 4149void
3158ev_embed_start (EV_P_ ev_embed *w) 4150ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3159{ 4151{
3160 if (expect_false (ev_is_active (w))) 4152 if (expect_false (ev_is_active (w)))
3161 return; 4153 return;
3162 4154
3163 { 4155 {
3164 struct ev_loop *loop = w->other; 4156 EV_P = w->other;
3165 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4157 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3166 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4158 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3167 } 4159 }
3168 4160
3169 EV_FREQUENT_CHECK; 4161 EV_FREQUENT_CHECK;
… …
3184 4176
3185 EV_FREQUENT_CHECK; 4177 EV_FREQUENT_CHECK;
3186} 4178}
3187 4179
3188void 4180void
3189ev_embed_stop (EV_P_ ev_embed *w) 4181ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3190{ 4182{
3191 clear_pending (EV_A_ (W)w); 4183 clear_pending (EV_A_ (W)w);
3192 if (expect_false (!ev_is_active (w))) 4184 if (expect_false (!ev_is_active (w)))
3193 return; 4185 return;
3194 4186
… …
3196 4188
3197 ev_io_stop (EV_A_ &w->io); 4189 ev_io_stop (EV_A_ &w->io);
3198 ev_prepare_stop (EV_A_ &w->prepare); 4190 ev_prepare_stop (EV_A_ &w->prepare);
3199 ev_fork_stop (EV_A_ &w->fork); 4191 ev_fork_stop (EV_A_ &w->fork);
3200 4192
4193 ev_stop (EV_A_ (W)w);
4194
3201 EV_FREQUENT_CHECK; 4195 EV_FREQUENT_CHECK;
3202} 4196}
3203#endif 4197#endif
3204 4198
3205#if EV_FORK_ENABLE 4199#if EV_FORK_ENABLE
3206void 4200void
3207ev_fork_start (EV_P_ ev_fork *w) 4201ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3208{ 4202{
3209 if (expect_false (ev_is_active (w))) 4203 if (expect_false (ev_is_active (w)))
3210 return; 4204 return;
3211 4205
3212 EV_FREQUENT_CHECK; 4206 EV_FREQUENT_CHECK;
… …
3217 4211
3218 EV_FREQUENT_CHECK; 4212 EV_FREQUENT_CHECK;
3219} 4213}
3220 4214
3221void 4215void
3222ev_fork_stop (EV_P_ ev_fork *w) 4216ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3223{ 4217{
3224 clear_pending (EV_A_ (W)w); 4218 clear_pending (EV_A_ (W)w);
3225 if (expect_false (!ev_is_active (w))) 4219 if (expect_false (!ev_is_active (w)))
3226 return; 4220 return;
3227 4221
… …
3238 4232
3239 EV_FREQUENT_CHECK; 4233 EV_FREQUENT_CHECK;
3240} 4234}
3241#endif 4235#endif
3242 4236
4237#if EV_CLEANUP_ENABLE
4238void
4239ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4240{
4241 if (expect_false (ev_is_active (w)))
4242 return;
4243
4244 EV_FREQUENT_CHECK;
4245
4246 ev_start (EV_A_ (W)w, ++cleanupcnt);
4247 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4248 cleanups [cleanupcnt - 1] = w;
4249
4250 /* cleanup watchers should never keep a refcount on the loop */
4251 ev_unref (EV_A);
4252 EV_FREQUENT_CHECK;
4253}
4254
4255void
4256ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4257{
4258 clear_pending (EV_A_ (W)w);
4259 if (expect_false (!ev_is_active (w)))
4260 return;
4261
4262 EV_FREQUENT_CHECK;
4263 ev_ref (EV_A);
4264
4265 {
4266 int active = ev_active (w);
4267
4268 cleanups [active - 1] = cleanups [--cleanupcnt];
4269 ev_active (cleanups [active - 1]) = active;
4270 }
4271
4272 ev_stop (EV_A_ (W)w);
4273
4274 EV_FREQUENT_CHECK;
4275}
4276#endif
4277
3243#if EV_ASYNC_ENABLE 4278#if EV_ASYNC_ENABLE
3244void 4279void
3245ev_async_start (EV_P_ ev_async *w) 4280ev_async_start (EV_P_ ev_async *w) EV_THROW
3246{ 4281{
3247 if (expect_false (ev_is_active (w))) 4282 if (expect_false (ev_is_active (w)))
3248 return; 4283 return;
4284
4285 w->sent = 0;
3249 4286
3250 evpipe_init (EV_A); 4287 evpipe_init (EV_A);
3251 4288
3252 EV_FREQUENT_CHECK; 4289 EV_FREQUENT_CHECK;
3253 4290
… …
3257 4294
3258 EV_FREQUENT_CHECK; 4295 EV_FREQUENT_CHECK;
3259} 4296}
3260 4297
3261void 4298void
3262ev_async_stop (EV_P_ ev_async *w) 4299ev_async_stop (EV_P_ ev_async *w) EV_THROW
3263{ 4300{
3264 clear_pending (EV_A_ (W)w); 4301 clear_pending (EV_A_ (W)w);
3265 if (expect_false (!ev_is_active (w))) 4302 if (expect_false (!ev_is_active (w)))
3266 return; 4303 return;
3267 4304
… …
3278 4315
3279 EV_FREQUENT_CHECK; 4316 EV_FREQUENT_CHECK;
3280} 4317}
3281 4318
3282void 4319void
3283ev_async_send (EV_P_ ev_async *w) 4320ev_async_send (EV_P_ ev_async *w) EV_THROW
3284{ 4321{
3285 w->sent = 1; 4322 w->sent = 1;
3286 evpipe_write (EV_A_ &gotasync); 4323 evpipe_write (EV_A_ &async_pending);
3287} 4324}
3288#endif 4325#endif
3289 4326
3290/*****************************************************************************/ 4327/*****************************************************************************/
3291 4328
… …
3325 4362
3326 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4363 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3327} 4364}
3328 4365
3329void 4366void
3330ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4367ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3331{ 4368{
3332 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4369 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3333 4370
3334 if (expect_false (!once)) 4371 if (expect_false (!once))
3335 { 4372 {
3336 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4373 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3337 return; 4374 return;
3338 } 4375 }
3339 4376
3340 once->cb = cb; 4377 once->cb = cb;
3341 once->arg = arg; 4378 once->arg = arg;
… …
3356} 4393}
3357 4394
3358/*****************************************************************************/ 4395/*****************************************************************************/
3359 4396
3360#if EV_WALK_ENABLE 4397#if EV_WALK_ENABLE
3361void 4398void ecb_cold
3362ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4399ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3363{ 4400{
3364 int i, j; 4401 int i, j;
3365 ev_watcher_list *wl, *wn; 4402 ev_watcher_list *wl, *wn;
3366 4403
3367 if (types & (EV_IO | EV_EMBED)) 4404 if (types & (EV_IO | EV_EMBED))
… …
3410 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4447 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3411#endif 4448#endif
3412 4449
3413#if EV_IDLE_ENABLE 4450#if EV_IDLE_ENABLE
3414 if (types & EV_IDLE) 4451 if (types & EV_IDLE)
3415 for (j = NUMPRI; i--; ) 4452 for (j = NUMPRI; j--; )
3416 for (i = idlecnt [j]; i--; ) 4453 for (i = idlecnt [j]; i--; )
3417 cb (EV_A_ EV_IDLE, idles [j][i]); 4454 cb (EV_A_ EV_IDLE, idles [j][i]);
3418#endif 4455#endif
3419 4456
3420#if EV_FORK_ENABLE 4457#if EV_FORK_ENABLE
… …
3428 if (types & EV_ASYNC) 4465 if (types & EV_ASYNC)
3429 for (i = asynccnt; i--; ) 4466 for (i = asynccnt; i--; )
3430 cb (EV_A_ EV_ASYNC, asyncs [i]); 4467 cb (EV_A_ EV_ASYNC, asyncs [i]);
3431#endif 4468#endif
3432 4469
4470#if EV_PREPARE_ENABLE
3433 if (types & EV_PREPARE) 4471 if (types & EV_PREPARE)
3434 for (i = preparecnt; i--; ) 4472 for (i = preparecnt; i--; )
3435#if EV_EMBED_ENABLE 4473# if EV_EMBED_ENABLE
3436 if (ev_cb (prepares [i]) != embed_prepare_cb) 4474 if (ev_cb (prepares [i]) != embed_prepare_cb)
3437#endif 4475# endif
3438 cb (EV_A_ EV_PREPARE, prepares [i]); 4476 cb (EV_A_ EV_PREPARE, prepares [i]);
4477#endif
3439 4478
4479#if EV_CHECK_ENABLE
3440 if (types & EV_CHECK) 4480 if (types & EV_CHECK)
3441 for (i = checkcnt; i--; ) 4481 for (i = checkcnt; i--; )
3442 cb (EV_A_ EV_CHECK, checks [i]); 4482 cb (EV_A_ EV_CHECK, checks [i]);
4483#endif
3443 4484
4485#if EV_SIGNAL_ENABLE
3444 if (types & EV_SIGNAL) 4486 if (types & EV_SIGNAL)
3445 for (i = 0; i < signalmax; ++i) 4487 for (i = 0; i < EV_NSIG - 1; ++i)
3446 for (wl = signals [i].head; wl; ) 4488 for (wl = signals [i].head; wl; )
3447 { 4489 {
3448 wn = wl->next; 4490 wn = wl->next;
3449 cb (EV_A_ EV_SIGNAL, wl); 4491 cb (EV_A_ EV_SIGNAL, wl);
3450 wl = wn; 4492 wl = wn;
3451 } 4493 }
4494#endif
3452 4495
4496#if EV_CHILD_ENABLE
3453 if (types & EV_CHILD) 4497 if (types & EV_CHILD)
3454 for (i = EV_PID_HASHSIZE; i--; ) 4498 for (i = (EV_PID_HASHSIZE); i--; )
3455 for (wl = childs [i]; wl; ) 4499 for (wl = childs [i]; wl; )
3456 { 4500 {
3457 wn = wl->next; 4501 wn = wl->next;
3458 cb (EV_A_ EV_CHILD, wl); 4502 cb (EV_A_ EV_CHILD, wl);
3459 wl = wn; 4503 wl = wn;
3460 } 4504 }
4505#endif
3461/* EV_STAT 0x00001000 /* stat data changed */ 4506/* EV_STAT 0x00001000 /* stat data changed */
3462/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4507/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3463} 4508}
3464#endif 4509#endif
3465 4510
3466#if EV_MULTIPLICITY 4511#if EV_MULTIPLICITY
3467 #include "ev_wrap.h" 4512 #include "ev_wrap.h"
3468#endif 4513#endif
3469 4514
3470#ifdef __cplusplus
3471}
3472#endif
3473

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