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Comparing libev/ev.c (file contents):
Revision 1.303 by root, Sun Jul 19 01:36:34 2009 UTC vs.
Revision 1.430 by root, Wed May 9 16:50:23 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
138# ifndef EV_USE_SIGNALFD
139# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H 147# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
140# define EV_USE_SIGNALFD 1 148# ifndef EV_USE_SIGNALFD
141# else
142# define EV_USE_SIGNALFD 0 149# define EV_USE_SIGNALFD EV_FEATURE_OS
143# endif 150# endif
151# else
152# undef EV_USE_SIGNALFD
153# define EV_USE_SIGNALFD 0
144# endif 154# endif
145 155
156# if HAVE_EVENTFD
146# ifndef EV_USE_EVENTFD 157# ifndef EV_USE_EVENTFD
147# if HAVE_EVENTFD
148# define EV_USE_EVENTFD 1 158# define EV_USE_EVENTFD EV_FEATURE_OS
149# else
150# define EV_USE_EVENTFD 0
151# endif 159# endif
160# else
161# undef EV_USE_EVENTFD
162# define EV_USE_EVENTFD 0
152# endif 163# endif
153 164
154#endif 165#endif
155 166
156#include <math.h>
157#include <stdlib.h> 167#include <stdlib.h>
168#include <string.h>
158#include <fcntl.h> 169#include <fcntl.h>
159#include <stddef.h> 170#include <stddef.h>
160 171
161#include <stdio.h> 172#include <stdio.h>
162 173
163#include <assert.h> 174#include <assert.h>
164#include <errno.h> 175#include <errno.h>
165#include <sys/types.h> 176#include <sys/types.h>
166#include <time.h> 177#include <time.h>
178#include <limits.h>
167 179
168#include <signal.h> 180#include <signal.h>
169 181
170#ifdef EV_H 182#ifdef EV_H
171# include EV_H 183# include EV_H
172#else 184#else
173# 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
174#endif 197#endif
175 198
176#ifndef _WIN32 199#ifndef _WIN32
177# include <sys/time.h> 200# include <sys/time.h>
178# include <sys/wait.h> 201# include <sys/wait.h>
179# include <unistd.h> 202# include <unistd.h>
180#else 203#else
181# include <io.h> 204# include <io.h>
182# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
183# include <windows.h> 206# include <windows.h>
207# include <winsock2.h>
184# ifndef EV_SELECT_IS_WINSOCKET 208# ifndef EV_SELECT_IS_WINSOCKET
185# define EV_SELECT_IS_WINSOCKET 1 209# define EV_SELECT_IS_WINSOCKET 1
186# endif 210# endif
211# undef EV_AVOID_STDIO
187#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
188 221
189/* 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
190 255
191#ifndef EV_USE_CLOCK_SYSCALL 256#ifndef EV_USE_CLOCK_SYSCALL
192# if __linux && __GLIBC__ >= 2 257# if __linux && __GLIBC__ >= 2
193# define EV_USE_CLOCK_SYSCALL 1 258# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
194# else 259# else
195# define EV_USE_CLOCK_SYSCALL 0 260# define EV_USE_CLOCK_SYSCALL 0
196# endif 261# endif
197#endif 262#endif
198 263
199#ifndef EV_USE_MONOTONIC 264#ifndef EV_USE_MONOTONIC
200# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 265# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
201# define EV_USE_MONOTONIC 1 266# define EV_USE_MONOTONIC EV_FEATURE_OS
202# else 267# else
203# define EV_USE_MONOTONIC 0 268# define EV_USE_MONOTONIC 0
204# endif 269# endif
205#endif 270#endif
206 271
… …
208# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 273# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
209#endif 274#endif
210 275
211#ifndef EV_USE_NANOSLEEP 276#ifndef EV_USE_NANOSLEEP
212# if _POSIX_C_SOURCE >= 199309L 277# if _POSIX_C_SOURCE >= 199309L
213# define EV_USE_NANOSLEEP 1 278# define EV_USE_NANOSLEEP EV_FEATURE_OS
214# else 279# else
215# define EV_USE_NANOSLEEP 0 280# define EV_USE_NANOSLEEP 0
216# endif 281# endif
217#endif 282#endif
218 283
219#ifndef EV_USE_SELECT 284#ifndef EV_USE_SELECT
220# define EV_USE_SELECT 1 285# define EV_USE_SELECT EV_FEATURE_BACKENDS
221#endif 286#endif
222 287
223#ifndef EV_USE_POLL 288#ifndef EV_USE_POLL
224# ifdef _WIN32 289# ifdef _WIN32
225# define EV_USE_POLL 0 290# define EV_USE_POLL 0
226# else 291# else
227# define EV_USE_POLL 1 292# define EV_USE_POLL EV_FEATURE_BACKENDS
228# endif 293# endif
229#endif 294#endif
230 295
231#ifndef EV_USE_EPOLL 296#ifndef EV_USE_EPOLL
232# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 297# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
233# define EV_USE_EPOLL 1 298# define EV_USE_EPOLL EV_FEATURE_BACKENDS
234# else 299# else
235# define EV_USE_EPOLL 0 300# define EV_USE_EPOLL 0
236# endif 301# endif
237#endif 302#endif
238 303
… …
244# define EV_USE_PORT 0 309# define EV_USE_PORT 0
245#endif 310#endif
246 311
247#ifndef EV_USE_INOTIFY 312#ifndef EV_USE_INOTIFY
248# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 313# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
249# define EV_USE_INOTIFY 1 314# define EV_USE_INOTIFY EV_FEATURE_OS
250# else 315# else
251# define EV_USE_INOTIFY 0 316# define EV_USE_INOTIFY 0
252# endif 317# endif
253#endif 318#endif
254 319
255#ifndef EV_PID_HASHSIZE 320#ifndef EV_PID_HASHSIZE
256# if EV_MINIMAL 321# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
257# define EV_PID_HASHSIZE 1
258# else
259# define EV_PID_HASHSIZE 16
260# endif
261#endif 322#endif
262 323
263#ifndef EV_INOTIFY_HASHSIZE 324#ifndef EV_INOTIFY_HASHSIZE
264# if EV_MINIMAL 325# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
265# define EV_INOTIFY_HASHSIZE 1
266# else
267# define EV_INOTIFY_HASHSIZE 16
268# endif
269#endif 326#endif
270 327
271#ifndef EV_USE_EVENTFD 328#ifndef EV_USE_EVENTFD
272# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 329# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
273# define EV_USE_EVENTFD 1 330# define EV_USE_EVENTFD EV_FEATURE_OS
274# else 331# else
275# define EV_USE_EVENTFD 0 332# define EV_USE_EVENTFD 0
276# endif 333# endif
277#endif 334#endif
278 335
279#ifndef EV_USE_SIGNALFD 336#ifndef EV_USE_SIGNALFD
280# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 9)) 337# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
281# define EV_USE_SIGNALFD 1 338# define EV_USE_SIGNALFD EV_FEATURE_OS
282# else 339# else
283# define EV_USE_SIGNALFD 0 340# define EV_USE_SIGNALFD 0
284# endif 341# endif
285#endif 342#endif
286 343
… …
289# define EV_USE_4HEAP 1 346# define EV_USE_4HEAP 1
290# define EV_HEAP_CACHE_AT 1 347# define EV_HEAP_CACHE_AT 1
291#endif 348#endif
292 349
293#ifndef EV_VERIFY 350#ifndef EV_VERIFY
294# define EV_VERIFY !EV_MINIMAL 351# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
295#endif 352#endif
296 353
297#ifndef EV_USE_4HEAP 354#ifndef EV_USE_4HEAP
298# define EV_USE_4HEAP !EV_MINIMAL 355# define EV_USE_4HEAP EV_FEATURE_DATA
299#endif 356#endif
300 357
301#ifndef EV_HEAP_CACHE_AT 358#ifndef EV_HEAP_CACHE_AT
302# define EV_HEAP_CACHE_AT !EV_MINIMAL 359# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
303#endif 360#endif
304 361
305/* 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, */
306/* which makes programs even slower. might work on other unices, too. */ 363/* which makes programs even slower. might work on other unices, too. */
307#if EV_USE_CLOCK_SYSCALL 364#if EV_USE_CLOCK_SYSCALL
308# include <syscall.h> 365# include <sys/syscall.h>
309# ifdef SYS_clock_gettime 366# ifdef SYS_clock_gettime
310# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 367# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
311# undef EV_USE_MONOTONIC 368# undef EV_USE_MONOTONIC
312# define EV_USE_MONOTONIC 1 369# define EV_USE_MONOTONIC 1
313# else 370# else
… …
316# endif 373# endif
317#endif 374#endif
318 375
319/* 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 */
320 377
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
321#ifndef CLOCK_MONOTONIC 384#ifndef CLOCK_MONOTONIC
322# undef EV_USE_MONOTONIC 385# undef EV_USE_MONOTONIC
323# define EV_USE_MONOTONIC 0 386# define EV_USE_MONOTONIC 0
324#endif 387#endif
325 388
… …
332# undef EV_USE_INOTIFY 395# undef EV_USE_INOTIFY
333# define EV_USE_INOTIFY 0 396# define EV_USE_INOTIFY 0
334#endif 397#endif
335 398
336#if !EV_USE_NANOSLEEP 399#if !EV_USE_NANOSLEEP
337# ifndef _WIN32 400/* hp-ux has it in sys/time.h, which we unconditionally include above */
401# if !defined _WIN32 && !defined __hpux
338# include <sys/select.h> 402# include <sys/select.h>
339# endif 403# endif
340#endif 404#endif
341 405
342#if EV_USE_INOTIFY 406#if EV_USE_INOTIFY
343# include <sys/utsname.h>
344# include <sys/statfs.h> 407# include <sys/statfs.h>
345# include <sys/inotify.h> 408# include <sys/inotify.h>
346/* 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 */
347# ifndef IN_DONT_FOLLOW 410# ifndef IN_DONT_FOLLOW
348# undef EV_USE_INOTIFY 411# undef EV_USE_INOTIFY
349# define EV_USE_INOTIFY 0 412# define EV_USE_INOTIFY 0
350# endif 413# endif
351#endif 414#endif
352 415
353#if EV_SELECT_IS_WINSOCKET
354# include <winsock.h>
355#endif
356
357#if EV_USE_EVENTFD 416#if EV_USE_EVENTFD
358/* 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 */
359# include <stdint.h> 418# include <stdint.h>
360# ifndef EFD_NONBLOCK 419# ifndef EFD_NONBLOCK
361# define EFD_NONBLOCK O_NONBLOCK 420# define EFD_NONBLOCK O_NONBLOCK
362# endif 421# endif
363# ifndef EFD_CLOEXEC 422# ifndef EFD_CLOEXEC
423# ifdef O_CLOEXEC
364# define EFD_CLOEXEC O_CLOEXEC 424# define EFD_CLOEXEC O_CLOEXEC
425# else
426# define EFD_CLOEXEC 02000000
427# endif
365# endif 428# endif
366# ifdef __cplusplus 429EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
367extern "C" { 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
368# endif 437# endif
369int eventfd (unsigned int initval, int flags); 438# ifndef SFD_CLOEXEC
370# ifdef __cplusplus 439# ifdef O_CLOEXEC
371} 440# define SFD_CLOEXEC O_CLOEXEC
441# else
442# define SFD_CLOEXEC 02000000
443# endif
372# endif 444# endif
373#endif 445EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
374 446
375#if EV_USE_SIGNALFD 447struct signalfd_siginfo
376# include <sys/signalfd.h> 448{
449 uint32_t ssi_signo;
450 char pad[128 - sizeof (uint32_t)];
451};
377#endif 452#endif
378 453
379/**/ 454/**/
380 455
381#if EV_VERIFY >= 3 456#if EV_VERIFY >= 3
382# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 457# define EV_FREQUENT_CHECK ev_verify (EV_A)
383#else 458#else
384# define EV_FREQUENT_CHECK do { } while (0) 459# define EV_FREQUENT_CHECK do { } while (0)
385#endif 460#endif
386 461
387/* 462/*
388 * This is used to avoid floating point rounding problems. 463 * This is used to work around floating point rounding problems.
389 * It is added to ev_rt_now when scheduling periodics
390 * to ensure progress, time-wise, even when rounding
391 * errors are against us.
392 * This value is good at least till the year 4000. 464 * This value is good at least till the year 4000.
393 * Better solutions welcome.
394 */ 465 */
395#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 */
396 468
397#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) */
398#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) */
399/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
400 471
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;
401#if __GNUC__ >= 4 516 #if __GNUC__
402# define expect(expr,value) __builtin_expect ((expr),(value)) 517 typedef signed long long int64_t;
403# 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
404#else 523#else
405# define expect(expr,value) (expr) 524 #include <inttypes.h>
406# define noinline
407# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
408# define inline
409# 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)))
410#endif 539 #endif
540#endif
411 541
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. */
412#define expect_false(expr) expect ((expr) != 0, 0) 705#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
413#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
414#define inline_size static inline 957#define inline_size ecb_inline
415 958
416#if EV_MINIMAL 959#if EV_FEATURE_CODE
960# define inline_speed ecb_inline
961#else
417# define inline_speed static noinline 962# define inline_speed static noinline
418#else
419# define inline_speed static inline
420#endif 963#endif
421 964
422#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 965#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
423 966
424#if EV_MINPRI == EV_MAXPRI 967#if EV_MINPRI == EV_MAXPRI
… …
437#define ev_active(w) ((W)(w))->active 980#define ev_active(w) ((W)(w))->active
438#define ev_at(w) ((WT)(w))->at 981#define ev_at(w) ((WT)(w))->at
439 982
440#if EV_USE_REALTIME 983#if EV_USE_REALTIME
441/* 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 */
442/* giving it a reasonably high chance of working on typical architetcures */ 985/* giving it a reasonably high chance of working on typical architectures */
443static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 986static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
444#endif 987#endif
445 988
446#if EV_USE_MONOTONIC 989#if EV_USE_MONOTONIC
447static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 990static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
448#endif 991#endif
449 992
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
450#ifdef _WIN32 1003#ifdef _WIN32
451# include "ev_win32.c" 1004# include "ev_win32.c"
452#endif 1005#endif
453 1006
454/*****************************************************************************/ 1007/*****************************************************************************/
455 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
456static void (*syserr_cb)(const char *msg); 1107static void (*syserr_cb)(const char *msg) EV_THROW;
457 1108
458void 1109void ecb_cold
459ev_set_syserr_cb (void (*cb)(const char *msg)) 1110ev_set_syserr_cb (void (*cb)(const char *msg)) EV_THROW
460{ 1111{
461 syserr_cb = cb; 1112 syserr_cb = cb;
462} 1113}
463 1114
464static void noinline 1115static void noinline ecb_cold
465ev_syserr (const char *msg) 1116ev_syserr (const char *msg)
466{ 1117{
467 if (!msg) 1118 if (!msg)
468 msg = "(libev) system error"; 1119 msg = "(libev) system error";
469 1120
470 if (syserr_cb) 1121 if (syserr_cb)
471 syserr_cb (msg); 1122 syserr_cb (msg);
472 else 1123 else
473 { 1124 {
1125#if EV_AVOID_STDIO
1126 ev_printerr (msg);
1127 ev_printerr (": ");
1128 ev_printerr (strerror (errno));
1129 ev_printerr ("\n");
1130#else
474 perror (msg); 1131 perror (msg);
1132#endif
475 abort (); 1133 abort ();
476 } 1134 }
477} 1135}
478 1136
479static void * 1137static void *
480ev_realloc_emul (void *ptr, long size) 1138ev_realloc_emul (void *ptr, long size)
481{ 1139{
1140#if __GLIBC__
1141 return realloc (ptr, size);
1142#else
482 /* some systems, notably openbsd and darwin, fail to properly 1143 /* some systems, notably openbsd and darwin, fail to properly
483 * 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
484 * the single unix specification, so work around them here. 1145 * the single unix specification, so work around them here.
485 */ 1146 */
486 1147
487 if (size) 1148 if (size)
488 return realloc (ptr, size); 1149 return realloc (ptr, size);
489 1150
490 free (ptr); 1151 free (ptr);
491 return 0; 1152 return 0;
1153#endif
492} 1154}
493 1155
494static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1156static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
495 1157
496void 1158void ecb_cold
497ev_set_allocator (void *(*cb)(void *ptr, long size)) 1159ev_set_allocator (void *(*cb)(void *ptr, long size)) EV_THROW
498{ 1160{
499 alloc = cb; 1161 alloc = cb;
500} 1162}
501 1163
502inline_speed void * 1164inline_speed void *
… …
504{ 1166{
505 ptr = alloc (ptr, size); 1167 ptr = alloc (ptr, size);
506 1168
507 if (!ptr && size) 1169 if (!ptr && size)
508 { 1170 {
1171#if EV_AVOID_STDIO
1172 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1173#else
509 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1174 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1175#endif
510 abort (); 1176 abort ();
511 } 1177 }
512 1178
513 return ptr; 1179 return ptr;
514} 1180}
… …
530 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 */
531 unsigned char unused; 1197 unsigned char unused;
532#if EV_USE_EPOLL 1198#if EV_USE_EPOLL
533 unsigned int egen; /* generation counter to counter epoll bugs */ 1199 unsigned int egen; /* generation counter to counter epoll bugs */
534#endif 1200#endif
535#if EV_SELECT_IS_WINSOCKET 1201#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
536 SOCKET handle; 1202 SOCKET handle;
1203#endif
1204#if EV_USE_IOCP
1205 OVERLAPPED or, ow;
537#endif 1206#endif
538} ANFD; 1207} ANFD;
539 1208
540/* stores the pending event set for a given watcher */ 1209/* stores the pending event set for a given watcher */
541typedef struct 1210typedef struct
… …
583 #undef VAR 1252 #undef VAR
584 }; 1253 };
585 #include "ev_wrap.h" 1254 #include "ev_wrap.h"
586 1255
587 static struct ev_loop default_loop_struct; 1256 static struct ev_loop default_loop_struct;
588 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 */
589 1258
590#else 1259#else
591 1260
592 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 */
593 #define VAR(name,decl) static decl; 1262 #define VAR(name,decl) static decl;
594 #include "ev_vars.h" 1263 #include "ev_vars.h"
595 #undef VAR 1264 #undef VAR
596 1265
597 static int ev_default_loop_ptr; 1266 static int ev_default_loop_ptr;
598 1267
599#endif 1268#endif
600 1269
601#if EV_MINIMAL < 2 1270#if EV_FEATURE_API
602# 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)
603# 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)
604# define EV_INVOKE_PENDING invoke_cb (EV_A) 1273# define EV_INVOKE_PENDING invoke_cb (EV_A)
605#else 1274#else
606# define EV_RELEASE_CB (void)0 1275# define EV_RELEASE_CB (void)0
607# define EV_ACQUIRE_CB (void)0 1276# define EV_ACQUIRE_CB (void)0
608# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1277# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
609#endif 1278#endif
610 1279
611#define EVUNLOOP_RECURSE 0x80 1280#define EVBREAK_RECURSE 0x80
612 1281
613/*****************************************************************************/ 1282/*****************************************************************************/
614 1283
615#ifndef EV_HAVE_EV_TIME 1284#ifndef EV_HAVE_EV_TIME
616ev_tstamp 1285ev_tstamp
617ev_time (void) 1286ev_time (void) EV_THROW
618{ 1287{
619#if EV_USE_REALTIME 1288#if EV_USE_REALTIME
620 if (expect_true (have_realtime)) 1289 if (expect_true (have_realtime))
621 { 1290 {
622 struct timespec ts; 1291 struct timespec ts;
… …
646 return ev_time (); 1315 return ev_time ();
647} 1316}
648 1317
649#if EV_MULTIPLICITY 1318#if EV_MULTIPLICITY
650ev_tstamp 1319ev_tstamp
651ev_now (EV_P) 1320ev_now (EV_P) EV_THROW
652{ 1321{
653 return ev_rt_now; 1322 return ev_rt_now;
654} 1323}
655#endif 1324#endif
656 1325
657void 1326void
658ev_sleep (ev_tstamp delay) 1327ev_sleep (ev_tstamp delay) EV_THROW
659{ 1328{
660 if (delay > 0.) 1329 if (delay > 0.)
661 { 1330 {
662#if EV_USE_NANOSLEEP 1331#if EV_USE_NANOSLEEP
663 struct timespec ts; 1332 struct timespec ts;
664 1333
665 ts.tv_sec = (time_t)delay; 1334 EV_TS_SET (ts, delay);
666 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
667
668 nanosleep (&ts, 0); 1335 nanosleep (&ts, 0);
669#elif defined(_WIN32) 1336#elif defined _WIN32
670 Sleep ((unsigned long)(delay * 1e3)); 1337 Sleep ((unsigned long)(delay * 1e3));
671#else 1338#else
672 struct timeval tv; 1339 struct timeval tv;
673 1340
674 tv.tv_sec = (time_t)delay;
675 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
676
677 /* 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 */
678 /* something not guaranteed by newer posix versions, but guaranteed */ 1342 /* something not guaranteed by newer posix versions, but guaranteed */
679 /* by older ones */ 1343 /* by older ones */
1344 EV_TV_SET (tv, delay);
680 select (0, 0, 0, 0, &tv); 1345 select (0, 0, 0, 0, &tv);
681#endif 1346#endif
682 } 1347 }
683} 1348}
684 1349
685/*****************************************************************************/ 1350/*****************************************************************************/
686 1351
687#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 */
688 1353
689/* find a suitable new size for the given array, */ 1354/* find a suitable new size for the given array, */
690/* hopefully by rounding to a ncie-to-malloc size */ 1355/* hopefully by rounding to a nice-to-malloc size */
691inline_size int 1356inline_size int
692array_nextsize (int elem, int cur, int cnt) 1357array_nextsize (int elem, int cur, int cnt)
693{ 1358{
694 int ncur = cur + 1; 1359 int ncur = cur + 1;
695 1360
696 do 1361 do
697 ncur <<= 1; 1362 ncur <<= 1;
698 while (cnt > ncur); 1363 while (cnt > ncur);
699 1364
700 /* 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 */
701 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1366 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
702 { 1367 {
703 ncur *= elem; 1368 ncur *= elem;
704 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);
705 ncur = ncur - sizeof (void *) * 4; 1370 ncur = ncur - sizeof (void *) * 4;
… …
707 } 1372 }
708 1373
709 return ncur; 1374 return ncur;
710} 1375}
711 1376
712static noinline void * 1377static void * noinline ecb_cold
713array_realloc (int elem, void *base, int *cur, int cnt) 1378array_realloc (int elem, void *base, int *cur, int cnt)
714{ 1379{
715 *cur = array_nextsize (elem, *cur, cnt); 1380 *cur = array_nextsize (elem, *cur, cnt);
716 return ev_realloc (base, elem * *cur); 1381 return ev_realloc (base, elem * *cur);
717} 1382}
… …
720 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1385 memset ((void *)(base), 0, sizeof (*(base)) * (count))
721 1386
722#define array_needsize(type,base,cur,cnt,init) \ 1387#define array_needsize(type,base,cur,cnt,init) \
723 if (expect_false ((cnt) > (cur))) \ 1388 if (expect_false ((cnt) > (cur))) \
724 { \ 1389 { \
725 int ocur_ = (cur); \ 1390 int ecb_unused ocur_ = (cur); \
726 (base) = (type *)array_realloc \ 1391 (base) = (type *)array_realloc \
727 (sizeof (type), (base), &(cur), (cnt)); \ 1392 (sizeof (type), (base), &(cur), (cnt)); \
728 init ((base) + (ocur_), (cur) - ocur_); \ 1393 init ((base) + (ocur_), (cur) - ocur_); \
729 } 1394 }
730 1395
… …
748pendingcb (EV_P_ ev_prepare *w, int revents) 1413pendingcb (EV_P_ ev_prepare *w, int revents)
749{ 1414{
750} 1415}
751 1416
752void noinline 1417void noinline
753ev_feed_event (EV_P_ void *w, int revents) 1418ev_feed_event (EV_P_ void *w, int revents) EV_THROW
754{ 1419{
755 W w_ = (W)w; 1420 W w_ = (W)w;
756 int pri = ABSPRI (w_); 1421 int pri = ABSPRI (w_);
757 1422
758 if (expect_false (w_->pending)) 1423 if (expect_false (w_->pending))
… …
762 w_->pending = ++pendingcnt [pri]; 1427 w_->pending = ++pendingcnt [pri];
763 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1428 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
764 pendings [pri][w_->pending - 1].w = w_; 1429 pendings [pri][w_->pending - 1].w = w_;
765 pendings [pri][w_->pending - 1].events = revents; 1430 pendings [pri][w_->pending - 1].events = revents;
766 } 1431 }
1432
1433 pendingpri = NUMPRI - 1;
767} 1434}
768 1435
769inline_speed void 1436inline_speed void
770feed_reverse (EV_P_ W w) 1437feed_reverse (EV_P_ W w)
771{ 1438{
… …
791} 1458}
792 1459
793/*****************************************************************************/ 1460/*****************************************************************************/
794 1461
795inline_speed void 1462inline_speed void
796fd_event_nc (EV_P_ int fd, int revents) 1463fd_event_nocheck (EV_P_ int fd, int revents)
797{ 1464{
798 ANFD *anfd = anfds + fd; 1465 ANFD *anfd = anfds + fd;
799 ev_io *w; 1466 ev_io *w;
800 1467
801 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)
… …
813fd_event (EV_P_ int fd, int revents) 1480fd_event (EV_P_ int fd, int revents)
814{ 1481{
815 ANFD *anfd = anfds + fd; 1482 ANFD *anfd = anfds + fd;
816 1483
817 if (expect_true (!anfd->reify)) 1484 if (expect_true (!anfd->reify))
818 fd_event_nc (EV_A_ fd, revents); 1485 fd_event_nocheck (EV_A_ fd, revents);
819} 1486}
820 1487
821void 1488void
822ev_feed_fd_event (EV_P_ int fd, int revents) 1489ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
823{ 1490{
824 if (fd >= 0 && fd < anfdmax) 1491 if (fd >= 0 && fd < anfdmax)
825 fd_event_nc (EV_A_ fd, revents); 1492 fd_event_nocheck (EV_A_ fd, revents);
826} 1493}
827 1494
828/* make sure the external fd watch events are in-sync */ 1495/* make sure the external fd watch events are in-sync */
829/* with the kernel/libev internal state */ 1496/* with the kernel/libev internal state */
830inline_size void 1497inline_size void
831fd_reify (EV_P) 1498fd_reify (EV_P)
832{ 1499{
833 int i; 1500 int i;
834 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
835 for (i = 0; i < fdchangecnt; ++i) 1527 for (i = 0; i < fdchangecnt; ++i)
836 { 1528 {
837 int fd = fdchanges [i]; 1529 int fd = fdchanges [i];
838 ANFD *anfd = anfds + fd; 1530 ANFD *anfd = anfds + fd;
839 ev_io *w; 1531 ev_io *w;
840 1532
841 unsigned char events = 0; 1533 unsigned char o_events = anfd->events;
1534 unsigned char o_reify = anfd->reify;
842 1535
843 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1536 anfd->reify = 0;
844 events |= (unsigned char)w->events;
845 1537
846#if EV_SELECT_IS_WINSOCKET 1538 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
847 if (events)
848 { 1539 {
849 unsigned long arg; 1540 anfd->events = 0;
850 #ifdef EV_FD_TO_WIN32_HANDLE 1541
851 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1542 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
852 #else 1543 anfd->events |= (unsigned char)w->events;
853 anfd->handle = _get_osfhandle (fd); 1544
854 #endif 1545 if (o_events != anfd->events)
855 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1546 o_reify = EV__IOFDSET; /* actually |= */
856 } 1547 }
857#endif
858 1548
859 { 1549 if (o_reify & EV__IOFDSET)
860 unsigned char o_events = anfd->events;
861 unsigned char o_reify = anfd->reify;
862
863 anfd->reify = 0;
864 anfd->events = events;
865
866 if (o_events != events || o_reify & EV__IOFDSET)
867 backend_modify (EV_A_ fd, o_events, events); 1550 backend_modify (EV_A_ fd, o_events, anfd->events);
868 }
869 } 1551 }
870 1552
871 fdchangecnt = 0; 1553 fdchangecnt = 0;
872} 1554}
873 1555
… …
885 fdchanges [fdchangecnt - 1] = fd; 1567 fdchanges [fdchangecnt - 1] = fd;
886 } 1568 }
887} 1569}
888 1570
889/* 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 */
890inline_speed void 1572inline_speed void ecb_cold
891fd_kill (EV_P_ int fd) 1573fd_kill (EV_P_ int fd)
892{ 1574{
893 ev_io *w; 1575 ev_io *w;
894 1576
895 while ((w = (ev_io *)anfds [fd].head)) 1577 while ((w = (ev_io *)anfds [fd].head))
… …
897 ev_io_stop (EV_A_ w); 1579 ev_io_stop (EV_A_ w);
898 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);
899 } 1581 }
900} 1582}
901 1583
902/* check whether the given fd is atcually valid, for error recovery */ 1584/* check whether the given fd is actually valid, for error recovery */
903inline_size int 1585inline_size int ecb_cold
904fd_valid (int fd) 1586fd_valid (int fd)
905{ 1587{
906#ifdef _WIN32 1588#ifdef _WIN32
907 return _get_osfhandle (fd) != -1; 1589 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
908#else 1590#else
909 return fcntl (fd, F_GETFD) != -1; 1591 return fcntl (fd, F_GETFD) != -1;
910#endif 1592#endif
911} 1593}
912 1594
913/* called on EBADF to verify fds */ 1595/* called on EBADF to verify fds */
914static void noinline 1596static void noinline ecb_cold
915fd_ebadf (EV_P) 1597fd_ebadf (EV_P)
916{ 1598{
917 int fd; 1599 int fd;
918 1600
919 for (fd = 0; fd < anfdmax; ++fd) 1601 for (fd = 0; fd < anfdmax; ++fd)
… …
921 if (!fd_valid (fd) && errno == EBADF) 1603 if (!fd_valid (fd) && errno == EBADF)
922 fd_kill (EV_A_ fd); 1604 fd_kill (EV_A_ fd);
923} 1605}
924 1606
925/* 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 */
926static void noinline 1608static void noinline ecb_cold
927fd_enomem (EV_P) 1609fd_enomem (EV_P)
928{ 1610{
929 int fd; 1611 int fd;
930 1612
931 for (fd = anfdmax; fd--; ) 1613 for (fd = anfdmax; fd--; )
932 if (anfds [fd].events) 1614 if (anfds [fd].events)
933 { 1615 {
934 fd_kill (EV_A_ fd); 1616 fd_kill (EV_A_ fd);
935 return; 1617 break;
936 } 1618 }
937} 1619}
938 1620
939/* 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 */
940static void noinline 1622static void noinline
… …
949 anfds [fd].emask = 0; 1631 anfds [fd].emask = 0;
950 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 1632 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
951 } 1633 }
952} 1634}
953 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
954/*****************************************************************************/ 1650/*****************************************************************************/
955 1651
956/* 1652/*
957 * 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
958 * 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
959 * the branching factor of the d-tree. 1655 * the branching factor of the d-tree.
960 */ 1656 */
961 1657
962/* 1658/*
… …
1030 1726
1031 for (;;) 1727 for (;;)
1032 { 1728 {
1033 int c = k << 1; 1729 int c = k << 1;
1034 1730
1035 if (c > N + HEAP0 - 1) 1731 if (c >= N + HEAP0)
1036 break; 1732 break;
1037 1733
1038 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])
1039 ? 1 : 0; 1735 ? 1 : 0;
1040 1736
… …
1076 1772
1077/* move an element suitably so it is in a correct place */ 1773/* move an element suitably so it is in a correct place */
1078inline_size void 1774inline_size void
1079adjustheap (ANHE *heap, int N, int k) 1775adjustheap (ANHE *heap, int N, int k)
1080{ 1776{
1081 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)]))
1082 upheap (heap, k); 1778 upheap (heap, k);
1083 else 1779 else
1084 downheap (heap, N, k); 1780 downheap (heap, N, k);
1085} 1781}
1086 1782
… …
1099/*****************************************************************************/ 1795/*****************************************************************************/
1100 1796
1101/* associate signal watchers to a signal signal */ 1797/* associate signal watchers to a signal signal */
1102typedef struct 1798typedef struct
1103{ 1799{
1800 EV_ATOMIC_T pending;
1801#if EV_MULTIPLICITY
1802 EV_P;
1803#endif
1104 WL head; 1804 WL head;
1105 EV_ATOMIC_T gotsig;
1106} ANSIG; 1805} ANSIG;
1107 1806
1108static ANSIG *signals; 1807static ANSIG signals [EV_NSIG - 1];
1109static int signalmax;
1110
1111static EV_ATOMIC_T gotsig;
1112 1808
1113/*****************************************************************************/ 1809/*****************************************************************************/
1114 1810
1115/* used to prepare libev internal fd's */ 1811#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1116/* this is not fork-safe */
1117inline_speed void
1118fd_intern (int fd)
1119{
1120#ifdef _WIN32
1121 unsigned long arg = 1;
1122 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1123#else
1124 fcntl (fd, F_SETFD, FD_CLOEXEC);
1125 fcntl (fd, F_SETFL, O_NONBLOCK);
1126#endif
1127}
1128 1812
1129static void noinline 1813static void noinline ecb_cold
1130evpipe_init (EV_P) 1814evpipe_init (EV_P)
1131{ 1815{
1132 if (!ev_is_active (&pipe_w)) 1816 if (!ev_is_active (&pipe_w))
1133 { 1817 {
1134#if EV_USE_EVENTFD 1818# if EV_USE_EVENTFD
1135 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 1819 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1136 if (evfd < 0 && errno == EINVAL) 1820 if (evfd < 0 && errno == EINVAL)
1137 evfd = eventfd (0, 0); 1821 evfd = eventfd (0, 0);
1138 1822
1139 if (evfd >= 0) 1823 if (evfd >= 0)
… …
1141 evpipe [0] = -1; 1825 evpipe [0] = -1;
1142 fd_intern (evfd); /* doing it twice doesn't hurt */ 1826 fd_intern (evfd); /* doing it twice doesn't hurt */
1143 ev_io_set (&pipe_w, evfd, EV_READ); 1827 ev_io_set (&pipe_w, evfd, EV_READ);
1144 } 1828 }
1145 else 1829 else
1146#endif 1830# endif
1147 { 1831 {
1148 while (pipe (evpipe)) 1832 while (pipe (evpipe))
1149 ev_syserr ("(libev) error creating signal/async pipe"); 1833 ev_syserr ("(libev) error creating signal/async pipe");
1150 1834
1151 fd_intern (evpipe [0]); 1835 fd_intern (evpipe [0]);
… …
1156 ev_io_start (EV_A_ &pipe_w); 1840 ev_io_start (EV_A_ &pipe_w);
1157 ev_unref (EV_A); /* watcher should not keep loop alive */ 1841 ev_unref (EV_A); /* watcher should not keep loop alive */
1158 } 1842 }
1159} 1843}
1160 1844
1161inline_size void 1845inline_speed void
1162evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1846evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1163{ 1847{
1164 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
1855 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1856
1857 pipe_write_skipped = 1;
1858
1859 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1860
1861 if (pipe_write_wanted)
1165 { 1862 {
1863 int old_errno;
1864
1865 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1866
1166 int old_errno = errno; /* save errno because write might clobber it */ 1867 old_errno = errno; /* save errno because write will clobber it */
1167
1168 *flag = 1;
1169 1868
1170#if EV_USE_EVENTFD 1869#if EV_USE_EVENTFD
1171 if (evfd >= 0) 1870 if (evfd >= 0)
1172 { 1871 {
1173 uint64_t counter = 1; 1872 uint64_t counter = 1;
1174 write (evfd, &counter, sizeof (uint64_t)); 1873 write (evfd, &counter, sizeof (uint64_t));
1175 } 1874 }
1176 else 1875 else
1177#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
1178 write (evpipe [1], &old_errno, 1); 1885 write (evpipe [1], &(evpipe [1]), 1);
1886#endif
1887 }
1179 1888
1180 errno = old_errno; 1889 errno = old_errno;
1181 } 1890 }
1182} 1891}
1183 1892
1184/* called whenever the libev signal pipe */ 1893/* called whenever the libev signal pipe */
1185/* got some events (signal, async) */ 1894/* got some events (signal, async) */
1186static void 1895static void
1187pipecb (EV_P_ ev_io *iow, int revents) 1896pipecb (EV_P_ ev_io *iow, int revents)
1188{ 1897{
1898 int i;
1899
1900 if (revents & EV_READ)
1901 {
1189#if EV_USE_EVENTFD 1902#if EV_USE_EVENTFD
1190 if (evfd >= 0) 1903 if (evfd >= 0)
1191 { 1904 {
1192 uint64_t counter; 1905 uint64_t counter;
1193 read (evfd, &counter, sizeof (uint64_t)); 1906 read (evfd, &counter, sizeof (uint64_t));
1194 } 1907 }
1195 else 1908 else
1196#endif 1909#endif
1197 { 1910 {
1198 char dummy; 1911 char dummy[4];
1912#ifdef _WIN32
1913 WSABUF buf;
1914 DWORD recvd;
1915 buf.buf = dummy;
1916 buf.len = sizeof (dummy);
1917 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, 0, 0, 0);
1918#else
1199 read (evpipe [0], &dummy, 1); 1919 read (evpipe [0], &dummy, sizeof (dummy));
1920#endif
1921 }
1922 }
1923
1924 pipe_write_skipped = 0;
1925
1926 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1927
1928#if EV_SIGNAL_ENABLE
1929 if (sig_pending)
1200 } 1930 {
1931 sig_pending = 0;
1201 1932
1202 if (gotsig && ev_is_default_loop (EV_A)) 1933 ECB_MEMORY_FENCE_RELEASE;
1203 {
1204 int signum;
1205 gotsig = 0;
1206 1934
1207 for (signum = signalmax; signum--; ) 1935 for (i = EV_NSIG - 1; i--; )
1208 if (signals [signum].gotsig) 1936 if (expect_false (signals [i].pending))
1209 ev_feed_signal_event (EV_A_ signum + 1); 1937 ev_feed_signal_event (EV_A_ i + 1);
1210 } 1938 }
1939#endif
1211 1940
1212#if EV_ASYNC_ENABLE 1941#if EV_ASYNC_ENABLE
1213 if (gotasync) 1942 if (async_pending)
1214 { 1943 {
1215 int i; 1944 async_pending = 0;
1216 gotasync = 0; 1945
1946 ECB_MEMORY_FENCE_RELEASE;
1217 1947
1218 for (i = asynccnt; i--; ) 1948 for (i = asynccnt; i--; )
1219 if (asyncs [i]->sent) 1949 if (asyncs [i]->sent)
1220 { 1950 {
1221 asyncs [i]->sent = 0; 1951 asyncs [i]->sent = 0;
… …
1225#endif 1955#endif
1226} 1956}
1227 1957
1228/*****************************************************************************/ 1958/*****************************************************************************/
1229 1959
1960void
1961ev_feed_signal (int signum) EV_THROW
1962{
1963#if EV_MULTIPLICITY
1964 EV_P = signals [signum - 1].loop;
1965
1966 if (!EV_A)
1967 return;
1968#endif
1969
1970 if (!ev_active (&pipe_w))
1971 return;
1972
1973 signals [signum - 1].pending = 1;
1974 evpipe_write (EV_A_ &sig_pending);
1975}
1976
1230static void 1977static void
1231ev_sighandler (int signum) 1978ev_sighandler (int signum)
1232{ 1979{
1980#ifdef _WIN32
1981 signal (signum, ev_sighandler);
1982#endif
1983
1984 ev_feed_signal (signum);
1985}
1986
1987void noinline
1988ev_feed_signal_event (EV_P_ int signum) EV_THROW
1989{
1990 WL w;
1991
1992 if (expect_false (signum <= 0 || signum > EV_NSIG))
1993 return;
1994
1995 --signum;
1996
1233#if EV_MULTIPLICITY 1997#if EV_MULTIPLICITY
1234 struct ev_loop *loop = &default_loop_struct; 1998 /* it is permissible to try to feed a signal to the wrong loop */
1235#endif 1999 /* or, likely more useful, feeding a signal nobody is waiting for */
1236 2000
1237#if _WIN32 2001 if (expect_false (signals [signum].loop != EV_A))
1238 signal (signum, ev_sighandler);
1239#endif
1240
1241 signals [signum - 1].gotsig = 1;
1242 evpipe_write (EV_A_ &gotsig);
1243}
1244
1245void noinline
1246ev_feed_signal_event (EV_P_ int signum)
1247{
1248 WL w;
1249
1250#if EV_MULTIPLICITY
1251 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1252#endif
1253
1254 --signum;
1255
1256 if (signum < 0 || signum >= signalmax)
1257 return; 2002 return;
2003#endif
1258 2004
1259 signals [signum].gotsig = 0; 2005 signals [signum].pending = 0;
1260 2006
1261 for (w = signals [signum].head; w; w = w->next) 2007 for (w = signals [signum].head; w; w = w->next)
1262 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2008 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1263} 2009}
1264 2010
1265#if EV_USE_SIGNALFD 2011#if EV_USE_SIGNALFD
1266static void 2012static void
1267sigfdcb (EV_P_ ev_io *iow, int revents) 2013sigfdcb (EV_P_ ev_io *iow, int revents)
1268{ 2014{
1269 struct signalfd_siginfo si[4], *sip; 2015 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1270 2016
1271 for (;;) 2017 for (;;)
1272 { 2018 {
1273 ssize_t res = read (sigfd, si, sizeof (si)); 2019 ssize_t res = read (sigfd, si, sizeof (si));
1274 2020
… …
1280 break; 2026 break;
1281 } 2027 }
1282} 2028}
1283#endif 2029#endif
1284 2030
2031#endif
2032
1285/*****************************************************************************/ 2033/*****************************************************************************/
1286 2034
2035#if EV_CHILD_ENABLE
1287static WL childs [EV_PID_HASHSIZE]; 2036static WL childs [EV_PID_HASHSIZE];
1288
1289#ifndef _WIN32
1290 2037
1291static ev_signal childev; 2038static ev_signal childev;
1292 2039
1293#ifndef WIFCONTINUED 2040#ifndef WIFCONTINUED
1294# define WIFCONTINUED(status) 0 2041# define WIFCONTINUED(status) 0
… …
1299child_reap (EV_P_ int chain, int pid, int status) 2046child_reap (EV_P_ int chain, int pid, int status)
1300{ 2047{
1301 ev_child *w; 2048 ev_child *w;
1302 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2049 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1303 2050
1304 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2051 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1305 { 2052 {
1306 if ((w->pid == pid || !w->pid) 2053 if ((w->pid == pid || !w->pid)
1307 && (!traced || (w->flags & 1))) 2054 && (!traced || (w->flags & 1)))
1308 { 2055 {
1309 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2056 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1334 /* make sure we are called again until all children have been reaped */ 2081 /* make sure we are called again until all children have been reaped */
1335 /* we need to do it this way so that the callback gets called before we continue */ 2082 /* we need to do it this way so that the callback gets called before we continue */
1336 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2083 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1337 2084
1338 child_reap (EV_A_ pid, pid, status); 2085 child_reap (EV_A_ pid, pid, status);
1339 if (EV_PID_HASHSIZE > 1) 2086 if ((EV_PID_HASHSIZE) > 1)
1340 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2087 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1341} 2088}
1342 2089
1343#endif 2090#endif
1344 2091
1345/*****************************************************************************/ 2092/*****************************************************************************/
1346 2093
2094#if EV_USE_IOCP
2095# include "ev_iocp.c"
2096#endif
1347#if EV_USE_PORT 2097#if EV_USE_PORT
1348# include "ev_port.c" 2098# include "ev_port.c"
1349#endif 2099#endif
1350#if EV_USE_KQUEUE 2100#if EV_USE_KQUEUE
1351# include "ev_kqueue.c" 2101# include "ev_kqueue.c"
… …
1358#endif 2108#endif
1359#if EV_USE_SELECT 2109#if EV_USE_SELECT
1360# include "ev_select.c" 2110# include "ev_select.c"
1361#endif 2111#endif
1362 2112
1363int 2113int ecb_cold
1364ev_version_major (void) 2114ev_version_major (void) EV_THROW
1365{ 2115{
1366 return EV_VERSION_MAJOR; 2116 return EV_VERSION_MAJOR;
1367} 2117}
1368 2118
1369int 2119int ecb_cold
1370ev_version_minor (void) 2120ev_version_minor (void) EV_THROW
1371{ 2121{
1372 return EV_VERSION_MINOR; 2122 return EV_VERSION_MINOR;
1373} 2123}
1374 2124
1375/* return true if we are running with elevated privileges and should ignore env variables */ 2125/* return true if we are running with elevated privileges and should ignore env variables */
1376int inline_size 2126int inline_size ecb_cold
1377enable_secure (void) 2127enable_secure (void)
1378{ 2128{
1379#ifdef _WIN32 2129#ifdef _WIN32
1380 return 0; 2130 return 0;
1381#else 2131#else
1382 return getuid () != geteuid () 2132 return getuid () != geteuid ()
1383 || getgid () != getegid (); 2133 || getgid () != getegid ();
1384#endif 2134#endif
1385} 2135}
1386 2136
1387unsigned int 2137unsigned int ecb_cold
1388ev_supported_backends (void) 2138ev_supported_backends (void) EV_THROW
1389{ 2139{
1390 unsigned int flags = 0; 2140 unsigned int flags = 0;
1391 2141
1392 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2142 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1393 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2143 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1396 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2146 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1397 2147
1398 return flags; 2148 return flags;
1399} 2149}
1400 2150
1401unsigned int 2151unsigned int ecb_cold
1402ev_recommended_backends (void) 2152ev_recommended_backends (void) EV_THROW
1403{ 2153{
1404 unsigned int flags = ev_supported_backends (); 2154 unsigned int flags = ev_supported_backends ();
1405 2155
1406#ifndef __NetBSD__ 2156#ifndef __NetBSD__
1407 /* kqueue is borked on everything but netbsd apparently */ 2157 /* kqueue is borked on everything but netbsd apparently */
… …
1411#ifdef __APPLE__ 2161#ifdef __APPLE__
1412 /* only select works correctly on that "unix-certified" platform */ 2162 /* only select works correctly on that "unix-certified" platform */
1413 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2163 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1414 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2164 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1415#endif 2165#endif
2166#ifdef __FreeBSD__
2167 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2168#endif
1416 2169
1417 return flags; 2170 return flags;
1418} 2171}
1419 2172
2173unsigned int ecb_cold
2174ev_embeddable_backends (void) EV_THROW
2175{
2176 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2177
2178 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2179 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2180 flags &= ~EVBACKEND_EPOLL;
2181
2182 return flags;
2183}
2184
1420unsigned int 2185unsigned int
1421ev_embeddable_backends (void) 2186ev_backend (EV_P) EV_THROW
1422{ 2187{
1423 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2188 return backend;
1424
1425 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1426 /* please fix it and tell me how to detect the fix */
1427 flags &= ~EVBACKEND_EPOLL;
1428
1429 return flags;
1430} 2189}
1431 2190
2191#if EV_FEATURE_API
1432unsigned int 2192unsigned int
1433ev_backend (EV_P) 2193ev_iteration (EV_P) EV_THROW
1434{ 2194{
1435 return backend; 2195 return loop_count;
1436} 2196}
1437 2197
1438#if EV_MINIMAL < 2
1439unsigned int 2198unsigned int
1440ev_loop_count (EV_P) 2199ev_depth (EV_P) EV_THROW
1441{
1442 return loop_count;
1443}
1444
1445unsigned int
1446ev_loop_depth (EV_P)
1447{ 2200{
1448 return loop_depth; 2201 return loop_depth;
1449} 2202}
1450 2203
1451void 2204void
1452ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2205ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1453{ 2206{
1454 io_blocktime = interval; 2207 io_blocktime = interval;
1455} 2208}
1456 2209
1457void 2210void
1458ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2211ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1459{ 2212{
1460 timeout_blocktime = interval; 2213 timeout_blocktime = interval;
1461} 2214}
1462 2215
1463void 2216void
1464ev_set_userdata (EV_P_ void *data) 2217ev_set_userdata (EV_P_ void *data) EV_THROW
1465{ 2218{
1466 userdata = data; 2219 userdata = data;
1467} 2220}
1468 2221
1469void * 2222void *
1470ev_userdata (EV_P) 2223ev_userdata (EV_P) EV_THROW
1471{ 2224{
1472 return userdata; 2225 return userdata;
1473} 2226}
1474 2227
2228void
1475void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2229ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
1476{ 2230{
1477 invoke_cb = invoke_pending_cb; 2231 invoke_cb = invoke_pending_cb;
1478} 2232}
1479 2233
2234void
1480void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2235ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1481{ 2236{
1482 release_cb = release; 2237 release_cb = release;
1483 acquire_cb = acquire; 2238 acquire_cb = acquire;
1484} 2239}
1485#endif 2240#endif
1486 2241
1487/* initialise a loop structure, must be zero-initialised */ 2242/* initialise a loop structure, must be zero-initialised */
1488static void noinline 2243static void noinline ecb_cold
1489loop_init (EV_P_ unsigned int flags) 2244loop_init (EV_P_ unsigned int flags) EV_THROW
1490{ 2245{
1491 if (!backend) 2246 if (!backend)
1492 { 2247 {
2248 origflags = flags;
2249
1493#if EV_USE_REALTIME 2250#if EV_USE_REALTIME
1494 if (!have_realtime) 2251 if (!have_realtime)
1495 { 2252 {
1496 struct timespec ts; 2253 struct timespec ts;
1497 2254
… …
1508 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2265 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1509 have_monotonic = 1; 2266 have_monotonic = 1;
1510 } 2267 }
1511#endif 2268#endif
1512 2269
1513 ev_rt_now = ev_time ();
1514 mn_now = get_clock ();
1515 now_floor = mn_now;
1516 rtmn_diff = ev_rt_now - mn_now;
1517#if EV_MINIMAL < 2
1518 invoke_cb = ev_invoke_pending;
1519#endif
1520
1521 io_blocktime = 0.;
1522 timeout_blocktime = 0.;
1523 backend = 0;
1524 backend_fd = -1;
1525 gotasync = 0;
1526#if EV_USE_INOTIFY
1527 fs_fd = -2;
1528#endif
1529#if EV_USE_SIGNALFD
1530 sigfd = -2;
1531#endif
1532
1533 /* pid check not overridable via env */ 2270 /* pid check not overridable via env */
1534#ifndef _WIN32 2271#ifndef _WIN32
1535 if (flags & EVFLAG_FORKCHECK) 2272 if (flags & EVFLAG_FORKCHECK)
1536 curpid = getpid (); 2273 curpid = getpid ();
1537#endif 2274#endif
… …
1539 if (!(flags & EVFLAG_NOENV) 2276 if (!(flags & EVFLAG_NOENV)
1540 && !enable_secure () 2277 && !enable_secure ()
1541 && getenv ("LIBEV_FLAGS")) 2278 && getenv ("LIBEV_FLAGS"))
1542 flags = atoi (getenv ("LIBEV_FLAGS")); 2279 flags = atoi (getenv ("LIBEV_FLAGS"));
1543 2280
1544 if (!(flags & 0x0000ffffU)) 2281 ev_rt_now = ev_time ();
2282 mn_now = get_clock ();
2283 now_floor = mn_now;
2284 rtmn_diff = ev_rt_now - mn_now;
2285#if EV_FEATURE_API
2286 invoke_cb = ev_invoke_pending;
2287#endif
2288
2289 io_blocktime = 0.;
2290 timeout_blocktime = 0.;
2291 backend = 0;
2292 backend_fd = -1;
2293 sig_pending = 0;
2294#if EV_ASYNC_ENABLE
2295 async_pending = 0;
2296#endif
2297 pipe_write_skipped = 0;
2298 pipe_write_wanted = 0;
2299#if EV_USE_INOTIFY
2300 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2301#endif
2302#if EV_USE_SIGNALFD
2303 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2304#endif
2305
2306 if (!(flags & EVBACKEND_MASK))
1545 flags |= ev_recommended_backends (); 2307 flags |= ev_recommended_backends ();
1546 2308
2309#if EV_USE_IOCP
2310 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2311#endif
1547#if EV_USE_PORT 2312#if EV_USE_PORT
1548 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2313 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1549#endif 2314#endif
1550#if EV_USE_KQUEUE 2315#if EV_USE_KQUEUE
1551 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2316 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1560 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2325 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1561#endif 2326#endif
1562 2327
1563 ev_prepare_init (&pending_w, pendingcb); 2328 ev_prepare_init (&pending_w, pendingcb);
1564 2329
2330#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1565 ev_init (&pipe_w, pipecb); 2331 ev_init (&pipe_w, pipecb);
1566 ev_set_priority (&pipe_w, EV_MAXPRI); 2332 ev_set_priority (&pipe_w, EV_MAXPRI);
2333#endif
1567 } 2334 }
1568} 2335}
1569 2336
1570/* free up a loop structure */ 2337/* free up a loop structure */
1571static void noinline 2338void ecb_cold
1572loop_destroy (EV_P) 2339ev_loop_destroy (EV_P)
1573{ 2340{
1574 int i; 2341 int i;
2342
2343#if EV_MULTIPLICITY
2344 /* mimic free (0) */
2345 if (!EV_A)
2346 return;
2347#endif
2348
2349#if EV_CLEANUP_ENABLE
2350 /* queue cleanup watchers (and execute them) */
2351 if (expect_false (cleanupcnt))
2352 {
2353 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2354 EV_INVOKE_PENDING;
2355 }
2356#endif
2357
2358#if EV_CHILD_ENABLE
2359 if (ev_is_active (&childev))
2360 {
2361 ev_ref (EV_A); /* child watcher */
2362 ev_signal_stop (EV_A_ &childev);
2363 }
2364#endif
1575 2365
1576 if (ev_is_active (&pipe_w)) 2366 if (ev_is_active (&pipe_w))
1577 { 2367 {
1578 /*ev_ref (EV_A);*/ 2368 /*ev_ref (EV_A);*/
1579 /*ev_io_stop (EV_A_ &pipe_w);*/ 2369 /*ev_io_stop (EV_A_ &pipe_w);*/
… …
1583 close (evfd); 2373 close (evfd);
1584#endif 2374#endif
1585 2375
1586 if (evpipe [0] >= 0) 2376 if (evpipe [0] >= 0)
1587 { 2377 {
1588 close (evpipe [0]); 2378 EV_WIN32_CLOSE_FD (evpipe [0]);
1589 close (evpipe [1]); 2379 EV_WIN32_CLOSE_FD (evpipe [1]);
1590 } 2380 }
1591 } 2381 }
1592 2382
1593#if EV_USE_SIGNALFD 2383#if EV_USE_SIGNALFD
1594 if (ev_is_active (&sigfd_w)) 2384 if (ev_is_active (&sigfd_w))
1595 {
1596 /*ev_ref (EV_A);*/
1597 /*ev_io_stop (EV_A_ &sigfd_w);*/
1598
1599 close (sigfd); 2385 close (sigfd);
1600 }
1601#endif 2386#endif
1602 2387
1603#if EV_USE_INOTIFY 2388#if EV_USE_INOTIFY
1604 if (fs_fd >= 0) 2389 if (fs_fd >= 0)
1605 close (fs_fd); 2390 close (fs_fd);
1606#endif 2391#endif
1607 2392
1608 if (backend_fd >= 0) 2393 if (backend_fd >= 0)
1609 close (backend_fd); 2394 close (backend_fd);
1610 2395
2396#if EV_USE_IOCP
2397 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2398#endif
1611#if EV_USE_PORT 2399#if EV_USE_PORT
1612 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2400 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1613#endif 2401#endif
1614#if EV_USE_KQUEUE 2402#if EV_USE_KQUEUE
1615 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2403 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1630#if EV_IDLE_ENABLE 2418#if EV_IDLE_ENABLE
1631 array_free (idle, [i]); 2419 array_free (idle, [i]);
1632#endif 2420#endif
1633 } 2421 }
1634 2422
1635 ev_free (anfds); anfdmax = 0; 2423 ev_free (anfds); anfds = 0; anfdmax = 0;
1636 2424
1637 /* have to use the microsoft-never-gets-it-right macro */ 2425 /* have to use the microsoft-never-gets-it-right macro */
1638 array_free (rfeed, EMPTY); 2426 array_free (rfeed, EMPTY);
1639 array_free (fdchange, EMPTY); 2427 array_free (fdchange, EMPTY);
1640 array_free (timer, EMPTY); 2428 array_free (timer, EMPTY);
… …
1642 array_free (periodic, EMPTY); 2430 array_free (periodic, EMPTY);
1643#endif 2431#endif
1644#if EV_FORK_ENABLE 2432#if EV_FORK_ENABLE
1645 array_free (fork, EMPTY); 2433 array_free (fork, EMPTY);
1646#endif 2434#endif
2435#if EV_CLEANUP_ENABLE
2436 array_free (cleanup, EMPTY);
2437#endif
1647 array_free (prepare, EMPTY); 2438 array_free (prepare, EMPTY);
1648 array_free (check, EMPTY); 2439 array_free (check, EMPTY);
1649#if EV_ASYNC_ENABLE 2440#if EV_ASYNC_ENABLE
1650 array_free (async, EMPTY); 2441 array_free (async, EMPTY);
1651#endif 2442#endif
1652 2443
1653 backend = 0; 2444 backend = 0;
2445
2446#if EV_MULTIPLICITY
2447 if (ev_is_default_loop (EV_A))
2448#endif
2449 ev_default_loop_ptr = 0;
2450#if EV_MULTIPLICITY
2451 else
2452 ev_free (EV_A);
2453#endif
1654} 2454}
1655 2455
1656#if EV_USE_INOTIFY 2456#if EV_USE_INOTIFY
1657inline_size void infy_fork (EV_P); 2457inline_size void infy_fork (EV_P);
1658#endif 2458#endif
… …
1673 infy_fork (EV_A); 2473 infy_fork (EV_A);
1674#endif 2474#endif
1675 2475
1676 if (ev_is_active (&pipe_w)) 2476 if (ev_is_active (&pipe_w))
1677 { 2477 {
1678 /* this "locks" the handlers against writing to the pipe */ 2478 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1679 /* while we modify the fd vars */
1680 gotsig = 1;
1681#if EV_ASYNC_ENABLE
1682 gotasync = 1;
1683#endif
1684 2479
1685 ev_ref (EV_A); 2480 ev_ref (EV_A);
1686 ev_io_stop (EV_A_ &pipe_w); 2481 ev_io_stop (EV_A_ &pipe_w);
1687 2482
1688#if EV_USE_EVENTFD 2483#if EV_USE_EVENTFD
… …
1690 close (evfd); 2485 close (evfd);
1691#endif 2486#endif
1692 2487
1693 if (evpipe [0] >= 0) 2488 if (evpipe [0] >= 0)
1694 { 2489 {
1695 close (evpipe [0]); 2490 EV_WIN32_CLOSE_FD (evpipe [0]);
1696 close (evpipe [1]); 2491 EV_WIN32_CLOSE_FD (evpipe [1]);
1697 } 2492 }
1698 2493
2494#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1699 evpipe_init (EV_A); 2495 evpipe_init (EV_A);
1700 /* now iterate over everything, in case we missed something */ 2496 /* now iterate over everything, in case we missed something */
1701 pipecb (EV_A_ &pipe_w, EV_READ); 2497 pipecb (EV_A_ &pipe_w, EV_READ);
2498#endif
1702 } 2499 }
1703 2500
1704 postfork = 0; 2501 postfork = 0;
1705} 2502}
1706 2503
1707#if EV_MULTIPLICITY 2504#if EV_MULTIPLICITY
1708 2505
1709struct ev_loop * 2506struct ev_loop * ecb_cold
1710ev_loop_new (unsigned int flags) 2507ev_loop_new (unsigned int flags) EV_THROW
1711{ 2508{
1712 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2509 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1713 2510
1714 memset (loop, 0, sizeof (struct ev_loop)); 2511 memset (EV_A, 0, sizeof (struct ev_loop));
1715 loop_init (EV_A_ flags); 2512 loop_init (EV_A_ flags);
1716 2513
1717 if (ev_backend (EV_A)) 2514 if (ev_backend (EV_A))
1718 return loop; 2515 return EV_A;
1719 2516
2517 ev_free (EV_A);
1720 return 0; 2518 return 0;
1721} 2519}
1722 2520
1723void
1724ev_loop_destroy (EV_P)
1725{
1726 loop_destroy (EV_A);
1727 ev_free (loop);
1728}
1729
1730void
1731ev_loop_fork (EV_P)
1732{
1733 postfork = 1; /* must be in line with ev_default_fork */
1734}
1735#endif /* multiplicity */ 2521#endif /* multiplicity */
1736 2522
1737#if EV_VERIFY 2523#if EV_VERIFY
1738static void noinline 2524static void noinline ecb_cold
1739verify_watcher (EV_P_ W w) 2525verify_watcher (EV_P_ W w)
1740{ 2526{
1741 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2527 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1742 2528
1743 if (w->pending) 2529 if (w->pending)
1744 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2530 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1745} 2531}
1746 2532
1747static void noinline 2533static void noinline ecb_cold
1748verify_heap (EV_P_ ANHE *heap, int N) 2534verify_heap (EV_P_ ANHE *heap, int N)
1749{ 2535{
1750 int i; 2536 int i;
1751 2537
1752 for (i = HEAP0; i < N + HEAP0; ++i) 2538 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1757 2543
1758 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2544 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1759 } 2545 }
1760} 2546}
1761 2547
1762static void noinline 2548static void noinline ecb_cold
1763array_verify (EV_P_ W *ws, int cnt) 2549array_verify (EV_P_ W *ws, int cnt)
1764{ 2550{
1765 while (cnt--) 2551 while (cnt--)
1766 { 2552 {
1767 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2553 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1768 verify_watcher (EV_A_ ws [cnt]); 2554 verify_watcher (EV_A_ ws [cnt]);
1769 } 2555 }
1770} 2556}
1771#endif 2557#endif
1772 2558
1773#if EV_MINIMAL < 2 2559#if EV_FEATURE_API
1774void 2560void ecb_cold
1775ev_loop_verify (EV_P) 2561ev_verify (EV_P) EV_THROW
1776{ 2562{
1777#if EV_VERIFY 2563#if EV_VERIFY
1778 int i; 2564 int i;
1779 WL w; 2565 WL w, w2;
1780 2566
1781 assert (activecnt >= -1); 2567 assert (activecnt >= -1);
1782 2568
1783 assert (fdchangemax >= fdchangecnt); 2569 assert (fdchangemax >= fdchangecnt);
1784 for (i = 0; i < fdchangecnt; ++i) 2570 for (i = 0; i < fdchangecnt; ++i)
1785 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2571 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1786 2572
1787 assert (anfdmax >= 0); 2573 assert (anfdmax >= 0);
1788 for (i = 0; i < anfdmax; ++i) 2574 for (i = 0; i < anfdmax; ++i)
2575 {
2576 int j = 0;
2577
1789 for (w = anfds [i].head; w; w = w->next) 2578 for (w = w2 = anfds [i].head; w; w = w->next)
1790 { 2579 {
1791 verify_watcher (EV_A_ (W)w); 2580 verify_watcher (EV_A_ (W)w);
2581
2582 if (j++ & 1)
2583 {
2584 assert (("libev: io watcher list contains a loop", w != w2));
2585 w2 = w2->next;
2586 }
2587
1792 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2588 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1793 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2589 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1794 } 2590 }
2591 }
1795 2592
1796 assert (timermax >= timercnt); 2593 assert (timermax >= timercnt);
1797 verify_heap (EV_A_ timers, timercnt); 2594 verify_heap (EV_A_ timers, timercnt);
1798 2595
1799#if EV_PERIODIC_ENABLE 2596#if EV_PERIODIC_ENABLE
… …
1814#if EV_FORK_ENABLE 2611#if EV_FORK_ENABLE
1815 assert (forkmax >= forkcnt); 2612 assert (forkmax >= forkcnt);
1816 array_verify (EV_A_ (W *)forks, forkcnt); 2613 array_verify (EV_A_ (W *)forks, forkcnt);
1817#endif 2614#endif
1818 2615
2616#if EV_CLEANUP_ENABLE
2617 assert (cleanupmax >= cleanupcnt);
2618 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2619#endif
2620
1819#if EV_ASYNC_ENABLE 2621#if EV_ASYNC_ENABLE
1820 assert (asyncmax >= asynccnt); 2622 assert (asyncmax >= asynccnt);
1821 array_verify (EV_A_ (W *)asyncs, asynccnt); 2623 array_verify (EV_A_ (W *)asyncs, asynccnt);
1822#endif 2624#endif
1823 2625
2626#if EV_PREPARE_ENABLE
1824 assert (preparemax >= preparecnt); 2627 assert (preparemax >= preparecnt);
1825 array_verify (EV_A_ (W *)prepares, preparecnt); 2628 array_verify (EV_A_ (W *)prepares, preparecnt);
2629#endif
1826 2630
2631#if EV_CHECK_ENABLE
1827 assert (checkmax >= checkcnt); 2632 assert (checkmax >= checkcnt);
1828 array_verify (EV_A_ (W *)checks, checkcnt); 2633 array_verify (EV_A_ (W *)checks, checkcnt);
2634#endif
1829 2635
1830# if 0 2636# if 0
2637#if EV_CHILD_ENABLE
1831 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2638 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1832 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2639 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2640#endif
1833# endif 2641# endif
1834#endif 2642#endif
1835} 2643}
1836#endif 2644#endif
1837 2645
1838#if EV_MULTIPLICITY 2646#if EV_MULTIPLICITY
1839struct ev_loop * 2647struct ev_loop * ecb_cold
1840ev_default_loop_init (unsigned int flags)
1841#else 2648#else
1842int 2649int
2650#endif
1843ev_default_loop (unsigned int flags) 2651ev_default_loop (unsigned int flags) EV_THROW
1844#endif
1845{ 2652{
1846 if (!ev_default_loop_ptr) 2653 if (!ev_default_loop_ptr)
1847 { 2654 {
1848#if EV_MULTIPLICITY 2655#if EV_MULTIPLICITY
1849 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2656 EV_P = ev_default_loop_ptr = &default_loop_struct;
1850#else 2657#else
1851 ev_default_loop_ptr = 1; 2658 ev_default_loop_ptr = 1;
1852#endif 2659#endif
1853 2660
1854 loop_init (EV_A_ flags); 2661 loop_init (EV_A_ flags);
1855 2662
1856 if (ev_backend (EV_A)) 2663 if (ev_backend (EV_A))
1857 { 2664 {
1858#ifndef _WIN32 2665#if EV_CHILD_ENABLE
1859 ev_signal_init (&childev, childcb, SIGCHLD); 2666 ev_signal_init (&childev, childcb, SIGCHLD);
1860 ev_set_priority (&childev, EV_MAXPRI); 2667 ev_set_priority (&childev, EV_MAXPRI);
1861 ev_signal_start (EV_A_ &childev); 2668 ev_signal_start (EV_A_ &childev);
1862 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2669 ev_unref (EV_A); /* child watcher should not keep loop alive */
1863#endif 2670#endif
… …
1868 2675
1869 return ev_default_loop_ptr; 2676 return ev_default_loop_ptr;
1870} 2677}
1871 2678
1872void 2679void
1873ev_default_destroy (void) 2680ev_loop_fork (EV_P) EV_THROW
1874{ 2681{
1875#if EV_MULTIPLICITY
1876 struct ev_loop *loop = ev_default_loop_ptr;
1877#endif
1878
1879 ev_default_loop_ptr = 0;
1880
1881#ifndef _WIN32
1882 ev_ref (EV_A); /* child watcher */
1883 ev_signal_stop (EV_A_ &childev);
1884#endif
1885
1886 loop_destroy (EV_A);
1887}
1888
1889void
1890ev_default_fork (void)
1891{
1892#if EV_MULTIPLICITY
1893 struct ev_loop *loop = ev_default_loop_ptr;
1894#endif
1895
1896 postfork = 1; /* must be in line with ev_loop_fork */ 2682 postfork = 1; /* must be in line with ev_default_fork */
1897} 2683}
1898 2684
1899/*****************************************************************************/ 2685/*****************************************************************************/
1900 2686
1901void 2687void
… …
1903{ 2689{
1904 EV_CB_INVOKE ((W)w, revents); 2690 EV_CB_INVOKE ((W)w, revents);
1905} 2691}
1906 2692
1907unsigned int 2693unsigned int
1908ev_pending_count (EV_P) 2694ev_pending_count (EV_P) EV_THROW
1909{ 2695{
1910 int pri; 2696 int pri;
1911 unsigned int count = 0; 2697 unsigned int count = 0;
1912 2698
1913 for (pri = NUMPRI; pri--; ) 2699 for (pri = NUMPRI; pri--; )
… …
1917} 2703}
1918 2704
1919void noinline 2705void noinline
1920ev_invoke_pending (EV_P) 2706ev_invoke_pending (EV_P)
1921{ 2707{
1922 int pri; 2708 for (pendingpri = NUMPRI; pendingpri--; ) /* pendingpri is modified during the loop */
1923
1924 for (pri = NUMPRI; pri--; )
1925 while (pendingcnt [pri]) 2709 while (pendingcnt [pendingpri])
1926 { 2710 {
1927 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2711 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1928
1929 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1930 /* ^ this is no longer true, as pending_w could be here */
1931 2712
1932 p->w->pending = 0; 2713 p->w->pending = 0;
1933 EV_CB_INVOKE (p->w, p->events); 2714 EV_CB_INVOKE (p->w, p->events);
1934 EV_FREQUENT_CHECK; 2715 EV_FREQUENT_CHECK;
1935 } 2716 }
… …
1992 EV_FREQUENT_CHECK; 2773 EV_FREQUENT_CHECK;
1993 feed_reverse (EV_A_ (W)w); 2774 feed_reverse (EV_A_ (W)w);
1994 } 2775 }
1995 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2776 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1996 2777
1997 feed_reverse_done (EV_A_ EV_TIMEOUT); 2778 feed_reverse_done (EV_A_ EV_TIMER);
1998 } 2779 }
1999} 2780}
2000 2781
2001#if EV_PERIODIC_ENABLE 2782#if EV_PERIODIC_ENABLE
2783
2784static void noinline
2785periodic_recalc (EV_P_ ev_periodic *w)
2786{
2787 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2788 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2789
2790 /* the above almost always errs on the low side */
2791 while (at <= ev_rt_now)
2792 {
2793 ev_tstamp nat = at + w->interval;
2794
2795 /* when resolution fails us, we use ev_rt_now */
2796 if (expect_false (nat == at))
2797 {
2798 at = ev_rt_now;
2799 break;
2800 }
2801
2802 at = nat;
2803 }
2804
2805 ev_at (w) = at;
2806}
2807
2002/* make periodics pending */ 2808/* make periodics pending */
2003inline_size void 2809inline_size void
2004periodics_reify (EV_P) 2810periodics_reify (EV_P)
2005{ 2811{
2006 EV_FREQUENT_CHECK; 2812 EV_FREQUENT_CHECK;
… …
2025 ANHE_at_cache (periodics [HEAP0]); 2831 ANHE_at_cache (periodics [HEAP0]);
2026 downheap (periodics, periodiccnt, HEAP0); 2832 downheap (periodics, periodiccnt, HEAP0);
2027 } 2833 }
2028 else if (w->interval) 2834 else if (w->interval)
2029 { 2835 {
2030 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2836 periodic_recalc (EV_A_ w);
2031 /* if next trigger time is not sufficiently in the future, put it there */
2032 /* this might happen because of floating point inexactness */
2033 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2034 {
2035 ev_at (w) += w->interval;
2036
2037 /* if interval is unreasonably low we might still have a time in the past */
2038 /* so correct this. this will make the periodic very inexact, but the user */
2039 /* has effectively asked to get triggered more often than possible */
2040 if (ev_at (w) < ev_rt_now)
2041 ev_at (w) = ev_rt_now;
2042 }
2043
2044 ANHE_at_cache (periodics [HEAP0]); 2837 ANHE_at_cache (periodics [HEAP0]);
2045 downheap (periodics, periodiccnt, HEAP0); 2838 downheap (periodics, periodiccnt, HEAP0);
2046 } 2839 }
2047 else 2840 else
2048 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2841 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2055 feed_reverse_done (EV_A_ EV_PERIODIC); 2848 feed_reverse_done (EV_A_ EV_PERIODIC);
2056 } 2849 }
2057} 2850}
2058 2851
2059/* simply recalculate all periodics */ 2852/* simply recalculate all periodics */
2060/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2853/* TODO: maybe ensure that at least one event happens when jumping forward? */
2061static void noinline 2854static void noinline ecb_cold
2062periodics_reschedule (EV_P) 2855periodics_reschedule (EV_P)
2063{ 2856{
2064 int i; 2857 int i;
2065 2858
2066 /* adjust periodics after time jump */ 2859 /* adjust periodics after time jump */
… …
2069 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2862 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2070 2863
2071 if (w->reschedule_cb) 2864 if (w->reschedule_cb)
2072 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2865 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2073 else if (w->interval) 2866 else if (w->interval)
2074 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2867 periodic_recalc (EV_A_ w);
2075 2868
2076 ANHE_at_cache (periodics [i]); 2869 ANHE_at_cache (periodics [i]);
2077 } 2870 }
2078 2871
2079 reheap (periodics, periodiccnt); 2872 reheap (periodics, periodiccnt);
2080} 2873}
2081#endif 2874#endif
2082 2875
2083/* adjust all timers by a given offset */ 2876/* adjust all timers by a given offset */
2084static void noinline 2877static void noinline ecb_cold
2085timers_reschedule (EV_P_ ev_tstamp adjust) 2878timers_reschedule (EV_P_ ev_tstamp adjust)
2086{ 2879{
2087 int i; 2880 int i;
2088 2881
2089 for (i = 0; i < timercnt; ++i) 2882 for (i = 0; i < timercnt; ++i)
… …
2093 ANHE_at_cache (*he); 2886 ANHE_at_cache (*he);
2094 } 2887 }
2095} 2888}
2096 2889
2097/* fetch new monotonic and realtime times from the kernel */ 2890/* fetch new monotonic and realtime times from the kernel */
2098/* also detetc if there was a timejump, and act accordingly */ 2891/* also detect if there was a timejump, and act accordingly */
2099inline_speed void 2892inline_speed void
2100time_update (EV_P_ ev_tstamp max_block) 2893time_update (EV_P_ ev_tstamp max_block)
2101{ 2894{
2102#if EV_USE_MONOTONIC 2895#if EV_USE_MONOTONIC
2103 if (expect_true (have_monotonic)) 2896 if (expect_true (have_monotonic))
… …
2126 * doesn't hurt either as we only do this on time-jumps or 2919 * doesn't hurt either as we only do this on time-jumps or
2127 * in the unlikely event of having been preempted here. 2920 * in the unlikely event of having been preempted here.
2128 */ 2921 */
2129 for (i = 4; --i; ) 2922 for (i = 4; --i; )
2130 { 2923 {
2924 ev_tstamp diff;
2131 rtmn_diff = ev_rt_now - mn_now; 2925 rtmn_diff = ev_rt_now - mn_now;
2132 2926
2927 diff = odiff - rtmn_diff;
2928
2133 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2929 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2134 return; /* all is well */ 2930 return; /* all is well */
2135 2931
2136 ev_rt_now = ev_time (); 2932 ev_rt_now = ev_time ();
2137 mn_now = get_clock (); 2933 mn_now = get_clock ();
2138 now_floor = mn_now; 2934 now_floor = mn_now;
… …
2160 2956
2161 mn_now = ev_rt_now; 2957 mn_now = ev_rt_now;
2162 } 2958 }
2163} 2959}
2164 2960
2165void 2961int
2166ev_loop (EV_P_ int flags) 2962ev_run (EV_P_ int flags)
2167{ 2963{
2168#if EV_MINIMAL < 2 2964#if EV_FEATURE_API
2169 ++loop_depth; 2965 ++loop_depth;
2170#endif 2966#endif
2171 2967
2172 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 2968 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2173 2969
2174 loop_done = EVUNLOOP_CANCEL; 2970 loop_done = EVBREAK_CANCEL;
2175 2971
2176 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 2972 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2177 2973
2178 do 2974 do
2179 { 2975 {
2180#if EV_VERIFY >= 2 2976#if EV_VERIFY >= 2
2181 ev_loop_verify (EV_A); 2977 ev_verify (EV_A);
2182#endif 2978#endif
2183 2979
2184#ifndef _WIN32 2980#ifndef _WIN32
2185 if (expect_false (curpid)) /* penalise the forking check even more */ 2981 if (expect_false (curpid)) /* penalise the forking check even more */
2186 if (expect_false (getpid () != curpid)) 2982 if (expect_false (getpid () != curpid))
… …
2198 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2994 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2199 EV_INVOKE_PENDING; 2995 EV_INVOKE_PENDING;
2200 } 2996 }
2201#endif 2997#endif
2202 2998
2999#if EV_PREPARE_ENABLE
2203 /* queue prepare watchers (and execute them) */ 3000 /* queue prepare watchers (and execute them) */
2204 if (expect_false (preparecnt)) 3001 if (expect_false (preparecnt))
2205 { 3002 {
2206 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3003 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2207 EV_INVOKE_PENDING; 3004 EV_INVOKE_PENDING;
2208 } 3005 }
3006#endif
2209 3007
2210 if (expect_false (loop_done)) 3008 if (expect_false (loop_done))
2211 break; 3009 break;
2212 3010
2213 /* we might have forked, so reify kernel state if necessary */ 3011 /* we might have forked, so reify kernel state if necessary */
… …
2220 /* calculate blocking time */ 3018 /* calculate blocking time */
2221 { 3019 {
2222 ev_tstamp waittime = 0.; 3020 ev_tstamp waittime = 0.;
2223 ev_tstamp sleeptime = 0.; 3021 ev_tstamp sleeptime = 0.;
2224 3022
3023 /* remember old timestamp for io_blocktime calculation */
3024 ev_tstamp prev_mn_now = mn_now;
3025
3026 /* update time to cancel out callback processing overhead */
3027 time_update (EV_A_ 1e100);
3028
3029 /* from now on, we want a pipe-wake-up */
3030 pipe_write_wanted = 1;
3031
3032 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3033
2225 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3034 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2226 { 3035 {
2227 /* remember old timestamp for io_blocktime calculation */
2228 ev_tstamp prev_mn_now = mn_now;
2229
2230 /* update time to cancel out callback processing overhead */
2231 time_update (EV_A_ 1e100);
2232
2233 waittime = MAX_BLOCKTIME; 3036 waittime = MAX_BLOCKTIME;
2234 3037
2235 if (timercnt) 3038 if (timercnt)
2236 { 3039 {
2237 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3040 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2238 if (waittime > to) waittime = to; 3041 if (waittime > to) waittime = to;
2239 } 3042 }
2240 3043
2241#if EV_PERIODIC_ENABLE 3044#if EV_PERIODIC_ENABLE
2242 if (periodiccnt) 3045 if (periodiccnt)
2243 { 3046 {
2244 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3047 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2245 if (waittime > to) waittime = to; 3048 if (waittime > to) waittime = to;
2246 } 3049 }
2247#endif 3050#endif
2248 3051
2249 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3052 /* don't let timeouts decrease the waittime below timeout_blocktime */
2250 if (expect_false (waittime < timeout_blocktime)) 3053 if (expect_false (waittime < timeout_blocktime))
2251 waittime = timeout_blocktime; 3054 waittime = timeout_blocktime;
3055
3056 /* at this point, we NEED to wait, so we have to ensure */
3057 /* to pass a minimum nonzero value to the backend */
3058 if (expect_false (waittime < backend_mintime))
3059 waittime = backend_mintime;
2252 3060
2253 /* extra check because io_blocktime is commonly 0 */ 3061 /* extra check because io_blocktime is commonly 0 */
2254 if (expect_false (io_blocktime)) 3062 if (expect_false (io_blocktime))
2255 { 3063 {
2256 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3064 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2257 3065
2258 if (sleeptime > waittime - backend_fudge) 3066 if (sleeptime > waittime - backend_mintime)
2259 sleeptime = waittime - backend_fudge; 3067 sleeptime = waittime - backend_mintime;
2260 3068
2261 if (expect_true (sleeptime > 0.)) 3069 if (expect_true (sleeptime > 0.))
2262 { 3070 {
2263 ev_sleep (sleeptime); 3071 ev_sleep (sleeptime);
2264 waittime -= sleeptime; 3072 waittime -= sleeptime;
2265 } 3073 }
2266 } 3074 }
2267 } 3075 }
2268 3076
2269#if EV_MINIMAL < 2 3077#if EV_FEATURE_API
2270 ++loop_count; 3078 ++loop_count;
2271#endif 3079#endif
2272 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3080 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2273 backend_poll (EV_A_ waittime); 3081 backend_poll (EV_A_ waittime);
2274 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3082 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3083
3084 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3085
3086 if (pipe_write_skipped)
3087 {
3088 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3089 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3090 }
3091
2275 3092
2276 /* update ev_rt_now, do magic */ 3093 /* update ev_rt_now, do magic */
2277 time_update (EV_A_ waittime + sleeptime); 3094 time_update (EV_A_ waittime + sleeptime);
2278 } 3095 }
2279 3096
… …
2286#if EV_IDLE_ENABLE 3103#if EV_IDLE_ENABLE
2287 /* queue idle watchers unless other events are pending */ 3104 /* queue idle watchers unless other events are pending */
2288 idle_reify (EV_A); 3105 idle_reify (EV_A);
2289#endif 3106#endif
2290 3107
3108#if EV_CHECK_ENABLE
2291 /* queue check watchers, to be executed first */ 3109 /* queue check watchers, to be executed first */
2292 if (expect_false (checkcnt)) 3110 if (expect_false (checkcnt))
2293 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3111 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3112#endif
2294 3113
2295 EV_INVOKE_PENDING; 3114 EV_INVOKE_PENDING;
2296 } 3115 }
2297 while (expect_true ( 3116 while (expect_true (
2298 activecnt 3117 activecnt
2299 && !loop_done 3118 && !loop_done
2300 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3119 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2301 )); 3120 ));
2302 3121
2303 if (loop_done == EVUNLOOP_ONE) 3122 if (loop_done == EVBREAK_ONE)
2304 loop_done = EVUNLOOP_CANCEL; 3123 loop_done = EVBREAK_CANCEL;
2305 3124
2306#if EV_MINIMAL < 2 3125#if EV_FEATURE_API
2307 --loop_depth; 3126 --loop_depth;
2308#endif 3127#endif
3128
3129 return activecnt;
2309} 3130}
2310 3131
2311void 3132void
2312ev_unloop (EV_P_ int how) 3133ev_break (EV_P_ int how) EV_THROW
2313{ 3134{
2314 loop_done = how; 3135 loop_done = how;
2315} 3136}
2316 3137
2317void 3138void
2318ev_ref (EV_P) 3139ev_ref (EV_P) EV_THROW
2319{ 3140{
2320 ++activecnt; 3141 ++activecnt;
2321} 3142}
2322 3143
2323void 3144void
2324ev_unref (EV_P) 3145ev_unref (EV_P) EV_THROW
2325{ 3146{
2326 --activecnt; 3147 --activecnt;
2327} 3148}
2328 3149
2329void 3150void
2330ev_now_update (EV_P) 3151ev_now_update (EV_P) EV_THROW
2331{ 3152{
2332 time_update (EV_A_ 1e100); 3153 time_update (EV_A_ 1e100);
2333} 3154}
2334 3155
2335void 3156void
2336ev_suspend (EV_P) 3157ev_suspend (EV_P) EV_THROW
2337{ 3158{
2338 ev_now_update (EV_A); 3159 ev_now_update (EV_A);
2339} 3160}
2340 3161
2341void 3162void
2342ev_resume (EV_P) 3163ev_resume (EV_P) EV_THROW
2343{ 3164{
2344 ev_tstamp mn_prev = mn_now; 3165 ev_tstamp mn_prev = mn_now;
2345 3166
2346 ev_now_update (EV_A); 3167 ev_now_update (EV_A);
2347 timers_reschedule (EV_A_ mn_now - mn_prev); 3168 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2364inline_size void 3185inline_size void
2365wlist_del (WL *head, WL elem) 3186wlist_del (WL *head, WL elem)
2366{ 3187{
2367 while (*head) 3188 while (*head)
2368 { 3189 {
2369 if (*head == elem) 3190 if (expect_true (*head == elem))
2370 { 3191 {
2371 *head = elem->next; 3192 *head = elem->next;
2372 return; 3193 break;
2373 } 3194 }
2374 3195
2375 head = &(*head)->next; 3196 head = &(*head)->next;
2376 } 3197 }
2377} 3198}
… …
2386 w->pending = 0; 3207 w->pending = 0;
2387 } 3208 }
2388} 3209}
2389 3210
2390int 3211int
2391ev_clear_pending (EV_P_ void *w) 3212ev_clear_pending (EV_P_ void *w) EV_THROW
2392{ 3213{
2393 W w_ = (W)w; 3214 W w_ = (W)w;
2394 int pending = w_->pending; 3215 int pending = w_->pending;
2395 3216
2396 if (expect_true (pending)) 3217 if (expect_true (pending))
… …
2429} 3250}
2430 3251
2431/*****************************************************************************/ 3252/*****************************************************************************/
2432 3253
2433void noinline 3254void noinline
2434ev_io_start (EV_P_ ev_io *w) 3255ev_io_start (EV_P_ ev_io *w) EV_THROW
2435{ 3256{
2436 int fd = w->fd; 3257 int fd = w->fd;
2437 3258
2438 if (expect_false (ev_is_active (w))) 3259 if (expect_false (ev_is_active (w)))
2439 return; 3260 return;
2440 3261
2441 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3262 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2442 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3263 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2443 3264
2444 EV_FREQUENT_CHECK; 3265 EV_FREQUENT_CHECK;
2445 3266
2446 ev_start (EV_A_ (W)w, 1); 3267 ev_start (EV_A_ (W)w, 1);
2447 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3268 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2448 wlist_add (&anfds[fd].head, (WL)w); 3269 wlist_add (&anfds[fd].head, (WL)w);
2449 3270
3271 /* common bug, apparently */
3272 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3273
2450 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3274 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2451 w->events &= ~EV__IOFDSET; 3275 w->events &= ~EV__IOFDSET;
2452 3276
2453 EV_FREQUENT_CHECK; 3277 EV_FREQUENT_CHECK;
2454} 3278}
2455 3279
2456void noinline 3280void noinline
2457ev_io_stop (EV_P_ ev_io *w) 3281ev_io_stop (EV_P_ ev_io *w) EV_THROW
2458{ 3282{
2459 clear_pending (EV_A_ (W)w); 3283 clear_pending (EV_A_ (W)w);
2460 if (expect_false (!ev_is_active (w))) 3284 if (expect_false (!ev_is_active (w)))
2461 return; 3285 return;
2462 3286
… …
2465 EV_FREQUENT_CHECK; 3289 EV_FREQUENT_CHECK;
2466 3290
2467 wlist_del (&anfds[w->fd].head, (WL)w); 3291 wlist_del (&anfds[w->fd].head, (WL)w);
2468 ev_stop (EV_A_ (W)w); 3292 ev_stop (EV_A_ (W)w);
2469 3293
2470 fd_change (EV_A_ w->fd, 1); 3294 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2471 3295
2472 EV_FREQUENT_CHECK; 3296 EV_FREQUENT_CHECK;
2473} 3297}
2474 3298
2475void noinline 3299void noinline
2476ev_timer_start (EV_P_ ev_timer *w) 3300ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2477{ 3301{
2478 if (expect_false (ev_is_active (w))) 3302 if (expect_false (ev_is_active (w)))
2479 return; 3303 return;
2480 3304
2481 ev_at (w) += mn_now; 3305 ev_at (w) += mn_now;
… …
2495 3319
2496 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3320 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2497} 3321}
2498 3322
2499void noinline 3323void noinline
2500ev_timer_stop (EV_P_ ev_timer *w) 3324ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2501{ 3325{
2502 clear_pending (EV_A_ (W)w); 3326 clear_pending (EV_A_ (W)w);
2503 if (expect_false (!ev_is_active (w))) 3327 if (expect_false (!ev_is_active (w)))
2504 return; 3328 return;
2505 3329
… …
2517 timers [active] = timers [timercnt + HEAP0]; 3341 timers [active] = timers [timercnt + HEAP0];
2518 adjustheap (timers, timercnt, active); 3342 adjustheap (timers, timercnt, active);
2519 } 3343 }
2520 } 3344 }
2521 3345
2522 EV_FREQUENT_CHECK;
2523
2524 ev_at (w) -= mn_now; 3346 ev_at (w) -= mn_now;
2525 3347
2526 ev_stop (EV_A_ (W)w); 3348 ev_stop (EV_A_ (W)w);
3349
3350 EV_FREQUENT_CHECK;
2527} 3351}
2528 3352
2529void noinline 3353void noinline
2530ev_timer_again (EV_P_ ev_timer *w) 3354ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2531{ 3355{
2532 EV_FREQUENT_CHECK; 3356 EV_FREQUENT_CHECK;
3357
3358 clear_pending (EV_A_ (W)w);
2533 3359
2534 if (ev_is_active (w)) 3360 if (ev_is_active (w))
2535 { 3361 {
2536 if (w->repeat) 3362 if (w->repeat)
2537 { 3363 {
… …
2550 3376
2551 EV_FREQUENT_CHECK; 3377 EV_FREQUENT_CHECK;
2552} 3378}
2553 3379
2554ev_tstamp 3380ev_tstamp
2555ev_timer_remaining (EV_P_ ev_timer *w) 3381ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2556{ 3382{
2557 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3383 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2558} 3384}
2559 3385
2560#if EV_PERIODIC_ENABLE 3386#if EV_PERIODIC_ENABLE
2561void noinline 3387void noinline
2562ev_periodic_start (EV_P_ ev_periodic *w) 3388ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2563{ 3389{
2564 if (expect_false (ev_is_active (w))) 3390 if (expect_false (ev_is_active (w)))
2565 return; 3391 return;
2566 3392
2567 if (w->reschedule_cb) 3393 if (w->reschedule_cb)
2568 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3394 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2569 else if (w->interval) 3395 else if (w->interval)
2570 { 3396 {
2571 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3397 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2572 /* this formula differs from the one in periodic_reify because we do not always round up */ 3398 periodic_recalc (EV_A_ w);
2573 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2574 } 3399 }
2575 else 3400 else
2576 ev_at (w) = w->offset; 3401 ev_at (w) = w->offset;
2577 3402
2578 EV_FREQUENT_CHECK; 3403 EV_FREQUENT_CHECK;
… …
2588 3413
2589 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3414 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2590} 3415}
2591 3416
2592void noinline 3417void noinline
2593ev_periodic_stop (EV_P_ ev_periodic *w) 3418ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2594{ 3419{
2595 clear_pending (EV_A_ (W)w); 3420 clear_pending (EV_A_ (W)w);
2596 if (expect_false (!ev_is_active (w))) 3421 if (expect_false (!ev_is_active (w)))
2597 return; 3422 return;
2598 3423
… …
2610 periodics [active] = periodics [periodiccnt + HEAP0]; 3435 periodics [active] = periodics [periodiccnt + HEAP0];
2611 adjustheap (periodics, periodiccnt, active); 3436 adjustheap (periodics, periodiccnt, active);
2612 } 3437 }
2613 } 3438 }
2614 3439
2615 EV_FREQUENT_CHECK;
2616
2617 ev_stop (EV_A_ (W)w); 3440 ev_stop (EV_A_ (W)w);
3441
3442 EV_FREQUENT_CHECK;
2618} 3443}
2619 3444
2620void noinline 3445void noinline
2621ev_periodic_again (EV_P_ ev_periodic *w) 3446ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2622{ 3447{
2623 /* TODO: use adjustheap and recalculation */ 3448 /* TODO: use adjustheap and recalculation */
2624 ev_periodic_stop (EV_A_ w); 3449 ev_periodic_stop (EV_A_ w);
2625 ev_periodic_start (EV_A_ w); 3450 ev_periodic_start (EV_A_ w);
2626} 3451}
… …
2628 3453
2629#ifndef SA_RESTART 3454#ifndef SA_RESTART
2630# define SA_RESTART 0 3455# define SA_RESTART 0
2631#endif 3456#endif
2632 3457
3458#if EV_SIGNAL_ENABLE
3459
2633void noinline 3460void noinline
2634ev_signal_start (EV_P_ ev_signal *w) 3461ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2635{ 3462{
2636#if EV_MULTIPLICITY
2637 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2638#endif
2639 if (expect_false (ev_is_active (w))) 3463 if (expect_false (ev_is_active (w)))
2640 return; 3464 return;
2641 3465
2642 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 3466 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
3467
3468#if EV_MULTIPLICITY
3469 assert (("libev: a signal must not be attached to two different loops",
3470 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3471
3472 signals [w->signum - 1].loop = EV_A;
3473#endif
2643 3474
2644 EV_FREQUENT_CHECK; 3475 EV_FREQUENT_CHECK;
2645 3476
2646#if EV_USE_SIGNALFD 3477#if EV_USE_SIGNALFD
2647 if (sigfd == -2) 3478 if (sigfd == -2)
… …
2669 sigaddset (&sigfd_set, w->signum); 3500 sigaddset (&sigfd_set, w->signum);
2670 sigprocmask (SIG_BLOCK, &sigfd_set, 0); 3501 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2671 3502
2672 signalfd (sigfd, &sigfd_set, 0); 3503 signalfd (sigfd, &sigfd_set, 0);
2673 } 3504 }
2674 else
2675#endif 3505#endif
2676 evpipe_init (EV_A);
2677
2678 {
2679#ifndef _WIN32
2680 sigset_t full, prev;
2681 sigfillset (&full);
2682 sigprocmask (SIG_SETMASK, &full, &prev);
2683#endif
2684
2685 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
2686
2687#ifndef _WIN32
2688 if (sigfd < 0)/*TODO*/
2689 sigdelset (&prev, w->signum);
2690 sigprocmask (SIG_SETMASK, &prev, 0);
2691#endif
2692 }
2693 3506
2694 ev_start (EV_A_ (W)w, 1); 3507 ev_start (EV_A_ (W)w, 1);
2695 wlist_add (&signals [w->signum - 1].head, (WL)w); 3508 wlist_add (&signals [w->signum - 1].head, (WL)w);
2696 3509
2697 if (!((WL)w)->next) 3510 if (!((WL)w)->next)
3511# if EV_USE_SIGNALFD
3512 if (sigfd < 0) /*TODO*/
3513# endif
2698 { 3514 {
2699#if _WIN32 3515# ifdef _WIN32
3516 evpipe_init (EV_A);
3517
2700 signal (w->signum, ev_sighandler); 3518 signal (w->signum, ev_sighandler);
2701#else 3519# else
2702 if (sigfd < 0) /*TODO*/
2703 {
2704 struct sigaction sa = { }; 3520 struct sigaction sa;
3521
3522 evpipe_init (EV_A);
3523
2705 sa.sa_handler = ev_sighandler; 3524 sa.sa_handler = ev_sighandler;
2706 sigfillset (&sa.sa_mask); 3525 sigfillset (&sa.sa_mask);
2707 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3526 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2708 sigaction (w->signum, &sa, 0); 3527 sigaction (w->signum, &sa, 0);
3528
3529 if (origflags & EVFLAG_NOSIGMASK)
3530 {
3531 sigemptyset (&sa.sa_mask);
3532 sigaddset (&sa.sa_mask, w->signum);
3533 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2709 } 3534 }
2710#endif 3535#endif
2711 } 3536 }
2712 3537
2713 EV_FREQUENT_CHECK; 3538 EV_FREQUENT_CHECK;
2714} 3539}
2715 3540
2716void noinline 3541void noinline
2717ev_signal_stop (EV_P_ ev_signal *w) 3542ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2718{ 3543{
2719 clear_pending (EV_A_ (W)w); 3544 clear_pending (EV_A_ (W)w);
2720 if (expect_false (!ev_is_active (w))) 3545 if (expect_false (!ev_is_active (w)))
2721 return; 3546 return;
2722 3547
… …
2724 3549
2725 wlist_del (&signals [w->signum - 1].head, (WL)w); 3550 wlist_del (&signals [w->signum - 1].head, (WL)w);
2726 ev_stop (EV_A_ (W)w); 3551 ev_stop (EV_A_ (W)w);
2727 3552
2728 if (!signals [w->signum - 1].head) 3553 if (!signals [w->signum - 1].head)
3554 {
3555#if EV_MULTIPLICITY
3556 signals [w->signum - 1].loop = 0; /* unattach from signal */
3557#endif
2729#if EV_USE_SIGNALFD 3558#if EV_USE_SIGNALFD
2730 if (sigfd >= 0) 3559 if (sigfd >= 0)
2731 { 3560 {
2732 sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D 3561 sigset_t ss;
3562
3563 sigemptyset (&ss);
3564 sigaddset (&ss, w->signum);
2733 sigdelset (&sigfd_set, w->signum); 3565 sigdelset (&sigfd_set, w->signum);
3566
2734 signalfd (sigfd, &sigfd_set, 0); 3567 signalfd (sigfd, &sigfd_set, 0);
2735 sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D 3568 sigprocmask (SIG_UNBLOCK, &ss, 0);
2736 /*TODO: maybe unblock signal? */
2737 } 3569 }
2738 else 3570 else
2739#endif 3571#endif
2740 signal (w->signum, SIG_DFL); 3572 signal (w->signum, SIG_DFL);
3573 }
2741 3574
2742 EV_FREQUENT_CHECK; 3575 EV_FREQUENT_CHECK;
2743} 3576}
3577
3578#endif
3579
3580#if EV_CHILD_ENABLE
2744 3581
2745void 3582void
2746ev_child_start (EV_P_ ev_child *w) 3583ev_child_start (EV_P_ ev_child *w) EV_THROW
2747{ 3584{
2748#if EV_MULTIPLICITY 3585#if EV_MULTIPLICITY
2749 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3586 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2750#endif 3587#endif
2751 if (expect_false (ev_is_active (w))) 3588 if (expect_false (ev_is_active (w)))
2752 return; 3589 return;
2753 3590
2754 EV_FREQUENT_CHECK; 3591 EV_FREQUENT_CHECK;
2755 3592
2756 ev_start (EV_A_ (W)w, 1); 3593 ev_start (EV_A_ (W)w, 1);
2757 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3594 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2758 3595
2759 EV_FREQUENT_CHECK; 3596 EV_FREQUENT_CHECK;
2760} 3597}
2761 3598
2762void 3599void
2763ev_child_stop (EV_P_ ev_child *w) 3600ev_child_stop (EV_P_ ev_child *w) EV_THROW
2764{ 3601{
2765 clear_pending (EV_A_ (W)w); 3602 clear_pending (EV_A_ (W)w);
2766 if (expect_false (!ev_is_active (w))) 3603 if (expect_false (!ev_is_active (w)))
2767 return; 3604 return;
2768 3605
2769 EV_FREQUENT_CHECK; 3606 EV_FREQUENT_CHECK;
2770 3607
2771 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3608 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2772 ev_stop (EV_A_ (W)w); 3609 ev_stop (EV_A_ (W)w);
2773 3610
2774 EV_FREQUENT_CHECK; 3611 EV_FREQUENT_CHECK;
2775} 3612}
3613
3614#endif
2776 3615
2777#if EV_STAT_ENABLE 3616#if EV_STAT_ENABLE
2778 3617
2779# ifdef _WIN32 3618# ifdef _WIN32
2780# undef lstat 3619# undef lstat
… …
2786#define MIN_STAT_INTERVAL 0.1074891 3625#define MIN_STAT_INTERVAL 0.1074891
2787 3626
2788static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3627static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2789 3628
2790#if EV_USE_INOTIFY 3629#if EV_USE_INOTIFY
2791# define EV_INOTIFY_BUFSIZE 8192 3630
3631/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3632# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2792 3633
2793static void noinline 3634static void noinline
2794infy_add (EV_P_ ev_stat *w) 3635infy_add (EV_P_ ev_stat *w)
2795{ 3636{
2796 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); 3637 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);
2797 3638
2798 if (w->wd < 0) 3639 if (w->wd >= 0)
3640 {
3641 struct statfs sfs;
3642
3643 /* now local changes will be tracked by inotify, but remote changes won't */
3644 /* unless the filesystem is known to be local, we therefore still poll */
3645 /* also do poll on <2.6.25, but with normal frequency */
3646
3647 if (!fs_2625)
3648 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3649 else if (!statfs (w->path, &sfs)
3650 && (sfs.f_type == 0x1373 /* devfs */
3651 || sfs.f_type == 0xEF53 /* ext2/3 */
3652 || sfs.f_type == 0x3153464a /* jfs */
3653 || sfs.f_type == 0x52654973 /* reiser3 */
3654 || sfs.f_type == 0x01021994 /* tempfs */
3655 || sfs.f_type == 0x58465342 /* xfs */))
3656 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3657 else
3658 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2799 { 3659 }
3660 else
3661 {
3662 /* can't use inotify, continue to stat */
2800 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3663 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2801 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2802 3664
2803 /* monitor some parent directory for speedup hints */ 3665 /* if path is not there, monitor some parent directory for speedup hints */
2804 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3666 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2805 /* but an efficiency issue only */ 3667 /* but an efficiency issue only */
2806 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3668 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2807 { 3669 {
2808 char path [4096]; 3670 char path [4096];
… …
2818 if (!pend || pend == path) 3680 if (!pend || pend == path)
2819 break; 3681 break;
2820 3682
2821 *pend = 0; 3683 *pend = 0;
2822 w->wd = inotify_add_watch (fs_fd, path, mask); 3684 w->wd = inotify_add_watch (fs_fd, path, mask);
2823 } 3685 }
2824 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3686 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2825 } 3687 }
2826 } 3688 }
2827 3689
2828 if (w->wd >= 0) 3690 if (w->wd >= 0)
2829 {
2830 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3691 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2831 3692
2832 /* now local changes will be tracked by inotify, but remote changes won't */ 3693 /* now re-arm timer, if required */
2833 /* unless the filesystem it known to be local, we therefore still poll */ 3694 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2834 /* also do poll on <2.6.25, but with normal frequency */
2835 struct statfs sfs;
2836
2837 if (fs_2625 && !statfs (w->path, &sfs))
2838 if (sfs.f_type == 0x1373 /* devfs */
2839 || sfs.f_type == 0xEF53 /* ext2/3 */
2840 || sfs.f_type == 0x3153464a /* jfs */
2841 || sfs.f_type == 0x52654973 /* reiser3 */
2842 || sfs.f_type == 0x01021994 /* tempfs */
2843 || sfs.f_type == 0x58465342 /* xfs */)
2844 return;
2845
2846 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2847 ev_timer_again (EV_A_ &w->timer); 3695 ev_timer_again (EV_A_ &w->timer);
2848 } 3696 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2849} 3697}
2850 3698
2851static void noinline 3699static void noinline
2852infy_del (EV_P_ ev_stat *w) 3700infy_del (EV_P_ ev_stat *w)
2853{ 3701{
… …
2856 3704
2857 if (wd < 0) 3705 if (wd < 0)
2858 return; 3706 return;
2859 3707
2860 w->wd = -2; 3708 w->wd = -2;
2861 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3709 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2862 wlist_del (&fs_hash [slot].head, (WL)w); 3710 wlist_del (&fs_hash [slot].head, (WL)w);
2863 3711
2864 /* remove this watcher, if others are watching it, they will rearm */ 3712 /* remove this watcher, if others are watching it, they will rearm */
2865 inotify_rm_watch (fs_fd, wd); 3713 inotify_rm_watch (fs_fd, wd);
2866} 3714}
… …
2868static void noinline 3716static void noinline
2869infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3717infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2870{ 3718{
2871 if (slot < 0) 3719 if (slot < 0)
2872 /* overflow, need to check for all hash slots */ 3720 /* overflow, need to check for all hash slots */
2873 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3721 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2874 infy_wd (EV_A_ slot, wd, ev); 3722 infy_wd (EV_A_ slot, wd, ev);
2875 else 3723 else
2876 { 3724 {
2877 WL w_; 3725 WL w_;
2878 3726
2879 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3727 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2880 { 3728 {
2881 ev_stat *w = (ev_stat *)w_; 3729 ev_stat *w = (ev_stat *)w_;
2882 w_ = w_->next; /* lets us remove this watcher and all before it */ 3730 w_ = w_->next; /* lets us remove this watcher and all before it */
2883 3731
2884 if (w->wd == wd || wd == -1) 3732 if (w->wd == wd || wd == -1)
2885 { 3733 {
2886 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3734 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2887 { 3735 {
2888 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3736 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2889 w->wd = -1; 3737 w->wd = -1;
2890 infy_add (EV_A_ w); /* re-add, no matter what */ 3738 infy_add (EV_A_ w); /* re-add, no matter what */
2891 } 3739 }
2892 3740
2893 stat_timer_cb (EV_A_ &w->timer, 0); 3741 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2898 3746
2899static void 3747static void
2900infy_cb (EV_P_ ev_io *w, int revents) 3748infy_cb (EV_P_ ev_io *w, int revents)
2901{ 3749{
2902 char buf [EV_INOTIFY_BUFSIZE]; 3750 char buf [EV_INOTIFY_BUFSIZE];
2903 struct inotify_event *ev = (struct inotify_event *)buf;
2904 int ofs; 3751 int ofs;
2905 int len = read (fs_fd, buf, sizeof (buf)); 3752 int len = read (fs_fd, buf, sizeof (buf));
2906 3753
2907 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3754 for (ofs = 0; ofs < len; )
3755 {
3756 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2908 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3757 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3758 ofs += sizeof (struct inotify_event) + ev->len;
3759 }
2909} 3760}
2910 3761
2911inline_size void 3762inline_size void ecb_cold
2912check_2625 (EV_P) 3763ev_check_2625 (EV_P)
2913{ 3764{
2914 /* kernels < 2.6.25 are borked 3765 /* kernels < 2.6.25 are borked
2915 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3766 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2916 */ 3767 */
2917 struct utsname buf; 3768 if (ev_linux_version () < 0x020619)
2918 int major, minor, micro;
2919
2920 if (uname (&buf))
2921 return; 3769 return;
2922 3770
2923 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2924 return;
2925
2926 if (major < 2
2927 || (major == 2 && minor < 6)
2928 || (major == 2 && minor == 6 && micro < 25))
2929 return;
2930
2931 fs_2625 = 1; 3771 fs_2625 = 1;
3772}
3773
3774inline_size int
3775infy_newfd (void)
3776{
3777#if defined IN_CLOEXEC && defined IN_NONBLOCK
3778 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3779 if (fd >= 0)
3780 return fd;
3781#endif
3782 return inotify_init ();
2932} 3783}
2933 3784
2934inline_size void 3785inline_size void
2935infy_init (EV_P) 3786infy_init (EV_P)
2936{ 3787{
2937 if (fs_fd != -2) 3788 if (fs_fd != -2)
2938 return; 3789 return;
2939 3790
2940 fs_fd = -1; 3791 fs_fd = -1;
2941 3792
2942 check_2625 (EV_A); 3793 ev_check_2625 (EV_A);
2943 3794
2944 fs_fd = inotify_init (); 3795 fs_fd = infy_newfd ();
2945 3796
2946 if (fs_fd >= 0) 3797 if (fs_fd >= 0)
2947 { 3798 {
3799 fd_intern (fs_fd);
2948 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3800 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2949 ev_set_priority (&fs_w, EV_MAXPRI); 3801 ev_set_priority (&fs_w, EV_MAXPRI);
2950 ev_io_start (EV_A_ &fs_w); 3802 ev_io_start (EV_A_ &fs_w);
3803 ev_unref (EV_A);
2951 } 3804 }
2952} 3805}
2953 3806
2954inline_size void 3807inline_size void
2955infy_fork (EV_P) 3808infy_fork (EV_P)
… …
2957 int slot; 3810 int slot;
2958 3811
2959 if (fs_fd < 0) 3812 if (fs_fd < 0)
2960 return; 3813 return;
2961 3814
3815 ev_ref (EV_A);
3816 ev_io_stop (EV_A_ &fs_w);
2962 close (fs_fd); 3817 close (fs_fd);
2963 fs_fd = inotify_init (); 3818 fs_fd = infy_newfd ();
2964 3819
3820 if (fs_fd >= 0)
3821 {
3822 fd_intern (fs_fd);
3823 ev_io_set (&fs_w, fs_fd, EV_READ);
3824 ev_io_start (EV_A_ &fs_w);
3825 ev_unref (EV_A);
3826 }
3827
2965 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3828 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2966 { 3829 {
2967 WL w_ = fs_hash [slot].head; 3830 WL w_ = fs_hash [slot].head;
2968 fs_hash [slot].head = 0; 3831 fs_hash [slot].head = 0;
2969 3832
2970 while (w_) 3833 while (w_)
… …
2975 w->wd = -1; 3838 w->wd = -1;
2976 3839
2977 if (fs_fd >= 0) 3840 if (fs_fd >= 0)
2978 infy_add (EV_A_ w); /* re-add, no matter what */ 3841 infy_add (EV_A_ w); /* re-add, no matter what */
2979 else 3842 else
3843 {
3844 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3845 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2980 ev_timer_again (EV_A_ &w->timer); 3846 ev_timer_again (EV_A_ &w->timer);
3847 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3848 }
2981 } 3849 }
2982 } 3850 }
2983} 3851}
2984 3852
2985#endif 3853#endif
… …
2989#else 3857#else
2990# define EV_LSTAT(p,b) lstat (p, b) 3858# define EV_LSTAT(p,b) lstat (p, b)
2991#endif 3859#endif
2992 3860
2993void 3861void
2994ev_stat_stat (EV_P_ ev_stat *w) 3862ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
2995{ 3863{
2996 if (lstat (w->path, &w->attr) < 0) 3864 if (lstat (w->path, &w->attr) < 0)
2997 w->attr.st_nlink = 0; 3865 w->attr.st_nlink = 0;
2998 else if (!w->attr.st_nlink) 3866 else if (!w->attr.st_nlink)
2999 w->attr.st_nlink = 1; 3867 w->attr.st_nlink = 1;
… …
3002static void noinline 3870static void noinline
3003stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3871stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3004{ 3872{
3005 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3873 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3006 3874
3007 /* we copy this here each the time so that */ 3875 ev_statdata prev = w->attr;
3008 /* prev has the old value when the callback gets invoked */
3009 w->prev = w->attr;
3010 ev_stat_stat (EV_A_ w); 3876 ev_stat_stat (EV_A_ w);
3011 3877
3012 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3878 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
3013 if ( 3879 if (
3014 w->prev.st_dev != w->attr.st_dev 3880 prev.st_dev != w->attr.st_dev
3015 || w->prev.st_ino != w->attr.st_ino 3881 || prev.st_ino != w->attr.st_ino
3016 || w->prev.st_mode != w->attr.st_mode 3882 || prev.st_mode != w->attr.st_mode
3017 || w->prev.st_nlink != w->attr.st_nlink 3883 || prev.st_nlink != w->attr.st_nlink
3018 || w->prev.st_uid != w->attr.st_uid 3884 || prev.st_uid != w->attr.st_uid
3019 || w->prev.st_gid != w->attr.st_gid 3885 || prev.st_gid != w->attr.st_gid
3020 || w->prev.st_rdev != w->attr.st_rdev 3886 || prev.st_rdev != w->attr.st_rdev
3021 || w->prev.st_size != w->attr.st_size 3887 || prev.st_size != w->attr.st_size
3022 || w->prev.st_atime != w->attr.st_atime 3888 || prev.st_atime != w->attr.st_atime
3023 || w->prev.st_mtime != w->attr.st_mtime 3889 || prev.st_mtime != w->attr.st_mtime
3024 || w->prev.st_ctime != w->attr.st_ctime 3890 || prev.st_ctime != w->attr.st_ctime
3025 ) { 3891 ) {
3892 /* we only update w->prev on actual differences */
3893 /* in case we test more often than invoke the callback, */
3894 /* to ensure that prev is always different to attr */
3895 w->prev = prev;
3896
3026 #if EV_USE_INOTIFY 3897 #if EV_USE_INOTIFY
3027 if (fs_fd >= 0) 3898 if (fs_fd >= 0)
3028 { 3899 {
3029 infy_del (EV_A_ w); 3900 infy_del (EV_A_ w);
3030 infy_add (EV_A_ w); 3901 infy_add (EV_A_ w);
… …
3035 ev_feed_event (EV_A_ w, EV_STAT); 3906 ev_feed_event (EV_A_ w, EV_STAT);
3036 } 3907 }
3037} 3908}
3038 3909
3039void 3910void
3040ev_stat_start (EV_P_ ev_stat *w) 3911ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3041{ 3912{
3042 if (expect_false (ev_is_active (w))) 3913 if (expect_false (ev_is_active (w)))
3043 return; 3914 return;
3044 3915
3045 ev_stat_stat (EV_A_ w); 3916 ev_stat_stat (EV_A_ w);
… …
3055 3926
3056 if (fs_fd >= 0) 3927 if (fs_fd >= 0)
3057 infy_add (EV_A_ w); 3928 infy_add (EV_A_ w);
3058 else 3929 else
3059#endif 3930#endif
3931 {
3060 ev_timer_again (EV_A_ &w->timer); 3932 ev_timer_again (EV_A_ &w->timer);
3933 ev_unref (EV_A);
3934 }
3061 3935
3062 ev_start (EV_A_ (W)w, 1); 3936 ev_start (EV_A_ (W)w, 1);
3063 3937
3064 EV_FREQUENT_CHECK; 3938 EV_FREQUENT_CHECK;
3065} 3939}
3066 3940
3067void 3941void
3068ev_stat_stop (EV_P_ ev_stat *w) 3942ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3069{ 3943{
3070 clear_pending (EV_A_ (W)w); 3944 clear_pending (EV_A_ (W)w);
3071 if (expect_false (!ev_is_active (w))) 3945 if (expect_false (!ev_is_active (w)))
3072 return; 3946 return;
3073 3947
3074 EV_FREQUENT_CHECK; 3948 EV_FREQUENT_CHECK;
3075 3949
3076#if EV_USE_INOTIFY 3950#if EV_USE_INOTIFY
3077 infy_del (EV_A_ w); 3951 infy_del (EV_A_ w);
3078#endif 3952#endif
3953
3954 if (ev_is_active (&w->timer))
3955 {
3956 ev_ref (EV_A);
3079 ev_timer_stop (EV_A_ &w->timer); 3957 ev_timer_stop (EV_A_ &w->timer);
3958 }
3080 3959
3081 ev_stop (EV_A_ (W)w); 3960 ev_stop (EV_A_ (W)w);
3082 3961
3083 EV_FREQUENT_CHECK; 3962 EV_FREQUENT_CHECK;
3084} 3963}
3085#endif 3964#endif
3086 3965
3087#if EV_IDLE_ENABLE 3966#if EV_IDLE_ENABLE
3088void 3967void
3089ev_idle_start (EV_P_ ev_idle *w) 3968ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3090{ 3969{
3091 if (expect_false (ev_is_active (w))) 3970 if (expect_false (ev_is_active (w)))
3092 return; 3971 return;
3093 3972
3094 pri_adjust (EV_A_ (W)w); 3973 pri_adjust (EV_A_ (W)w);
… …
3107 3986
3108 EV_FREQUENT_CHECK; 3987 EV_FREQUENT_CHECK;
3109} 3988}
3110 3989
3111void 3990void
3112ev_idle_stop (EV_P_ ev_idle *w) 3991ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3113{ 3992{
3114 clear_pending (EV_A_ (W)w); 3993 clear_pending (EV_A_ (W)w);
3115 if (expect_false (!ev_is_active (w))) 3994 if (expect_false (!ev_is_active (w)))
3116 return; 3995 return;
3117 3996
… …
3129 4008
3130 EV_FREQUENT_CHECK; 4009 EV_FREQUENT_CHECK;
3131} 4010}
3132#endif 4011#endif
3133 4012
4013#if EV_PREPARE_ENABLE
3134void 4014void
3135ev_prepare_start (EV_P_ ev_prepare *w) 4015ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3136{ 4016{
3137 if (expect_false (ev_is_active (w))) 4017 if (expect_false (ev_is_active (w)))
3138 return; 4018 return;
3139 4019
3140 EV_FREQUENT_CHECK; 4020 EV_FREQUENT_CHECK;
… …
3145 4025
3146 EV_FREQUENT_CHECK; 4026 EV_FREQUENT_CHECK;
3147} 4027}
3148 4028
3149void 4029void
3150ev_prepare_stop (EV_P_ ev_prepare *w) 4030ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3151{ 4031{
3152 clear_pending (EV_A_ (W)w); 4032 clear_pending (EV_A_ (W)w);
3153 if (expect_false (!ev_is_active (w))) 4033 if (expect_false (!ev_is_active (w)))
3154 return; 4034 return;
3155 4035
… …
3164 4044
3165 ev_stop (EV_A_ (W)w); 4045 ev_stop (EV_A_ (W)w);
3166 4046
3167 EV_FREQUENT_CHECK; 4047 EV_FREQUENT_CHECK;
3168} 4048}
4049#endif
3169 4050
4051#if EV_CHECK_ENABLE
3170void 4052void
3171ev_check_start (EV_P_ ev_check *w) 4053ev_check_start (EV_P_ ev_check *w) EV_THROW
3172{ 4054{
3173 if (expect_false (ev_is_active (w))) 4055 if (expect_false (ev_is_active (w)))
3174 return; 4056 return;
3175 4057
3176 EV_FREQUENT_CHECK; 4058 EV_FREQUENT_CHECK;
… …
3181 4063
3182 EV_FREQUENT_CHECK; 4064 EV_FREQUENT_CHECK;
3183} 4065}
3184 4066
3185void 4067void
3186ev_check_stop (EV_P_ ev_check *w) 4068ev_check_stop (EV_P_ ev_check *w) EV_THROW
3187{ 4069{
3188 clear_pending (EV_A_ (W)w); 4070 clear_pending (EV_A_ (W)w);
3189 if (expect_false (!ev_is_active (w))) 4071 if (expect_false (!ev_is_active (w)))
3190 return; 4072 return;
3191 4073
… …
3200 4082
3201 ev_stop (EV_A_ (W)w); 4083 ev_stop (EV_A_ (W)w);
3202 4084
3203 EV_FREQUENT_CHECK; 4085 EV_FREQUENT_CHECK;
3204} 4086}
4087#endif
3205 4088
3206#if EV_EMBED_ENABLE 4089#if EV_EMBED_ENABLE
3207void noinline 4090void noinline
3208ev_embed_sweep (EV_P_ ev_embed *w) 4091ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3209{ 4092{
3210 ev_loop (w->other, EVLOOP_NONBLOCK); 4093 ev_run (w->other, EVRUN_NOWAIT);
3211} 4094}
3212 4095
3213static void 4096static void
3214embed_io_cb (EV_P_ ev_io *io, int revents) 4097embed_io_cb (EV_P_ ev_io *io, int revents)
3215{ 4098{
3216 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4099 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3217 4100
3218 if (ev_cb (w)) 4101 if (ev_cb (w))
3219 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4102 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3220 else 4103 else
3221 ev_loop (w->other, EVLOOP_NONBLOCK); 4104 ev_run (w->other, EVRUN_NOWAIT);
3222} 4105}
3223 4106
3224static void 4107static void
3225embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4108embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3226{ 4109{
3227 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4110 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3228 4111
3229 { 4112 {
3230 struct ev_loop *loop = w->other; 4113 EV_P = w->other;
3231 4114
3232 while (fdchangecnt) 4115 while (fdchangecnt)
3233 { 4116 {
3234 fd_reify (EV_A); 4117 fd_reify (EV_A);
3235 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4118 ev_run (EV_A_ EVRUN_NOWAIT);
3236 } 4119 }
3237 } 4120 }
3238} 4121}
3239 4122
3240static void 4123static void
… …
3243 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 4126 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3244 4127
3245 ev_embed_stop (EV_A_ w); 4128 ev_embed_stop (EV_A_ w);
3246 4129
3247 { 4130 {
3248 struct ev_loop *loop = w->other; 4131 EV_P = w->other;
3249 4132
3250 ev_loop_fork (EV_A); 4133 ev_loop_fork (EV_A);
3251 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4134 ev_run (EV_A_ EVRUN_NOWAIT);
3252 } 4135 }
3253 4136
3254 ev_embed_start (EV_A_ w); 4137 ev_embed_start (EV_A_ w);
3255} 4138}
3256 4139
… …
3261 ev_idle_stop (EV_A_ idle); 4144 ev_idle_stop (EV_A_ idle);
3262} 4145}
3263#endif 4146#endif
3264 4147
3265void 4148void
3266ev_embed_start (EV_P_ ev_embed *w) 4149ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3267{ 4150{
3268 if (expect_false (ev_is_active (w))) 4151 if (expect_false (ev_is_active (w)))
3269 return; 4152 return;
3270 4153
3271 { 4154 {
3272 struct ev_loop *loop = w->other; 4155 EV_P = w->other;
3273 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4156 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3274 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4157 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3275 } 4158 }
3276 4159
3277 EV_FREQUENT_CHECK; 4160 EV_FREQUENT_CHECK;
… …
3292 4175
3293 EV_FREQUENT_CHECK; 4176 EV_FREQUENT_CHECK;
3294} 4177}
3295 4178
3296void 4179void
3297ev_embed_stop (EV_P_ ev_embed *w) 4180ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3298{ 4181{
3299 clear_pending (EV_A_ (W)w); 4182 clear_pending (EV_A_ (W)w);
3300 if (expect_false (!ev_is_active (w))) 4183 if (expect_false (!ev_is_active (w)))
3301 return; 4184 return;
3302 4185
… …
3304 4187
3305 ev_io_stop (EV_A_ &w->io); 4188 ev_io_stop (EV_A_ &w->io);
3306 ev_prepare_stop (EV_A_ &w->prepare); 4189 ev_prepare_stop (EV_A_ &w->prepare);
3307 ev_fork_stop (EV_A_ &w->fork); 4190 ev_fork_stop (EV_A_ &w->fork);
3308 4191
4192 ev_stop (EV_A_ (W)w);
4193
3309 EV_FREQUENT_CHECK; 4194 EV_FREQUENT_CHECK;
3310} 4195}
3311#endif 4196#endif
3312 4197
3313#if EV_FORK_ENABLE 4198#if EV_FORK_ENABLE
3314void 4199void
3315ev_fork_start (EV_P_ ev_fork *w) 4200ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3316{ 4201{
3317 if (expect_false (ev_is_active (w))) 4202 if (expect_false (ev_is_active (w)))
3318 return; 4203 return;
3319 4204
3320 EV_FREQUENT_CHECK; 4205 EV_FREQUENT_CHECK;
… …
3325 4210
3326 EV_FREQUENT_CHECK; 4211 EV_FREQUENT_CHECK;
3327} 4212}
3328 4213
3329void 4214void
3330ev_fork_stop (EV_P_ ev_fork *w) 4215ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3331{ 4216{
3332 clear_pending (EV_A_ (W)w); 4217 clear_pending (EV_A_ (W)w);
3333 if (expect_false (!ev_is_active (w))) 4218 if (expect_false (!ev_is_active (w)))
3334 return; 4219 return;
3335 4220
… …
3346 4231
3347 EV_FREQUENT_CHECK; 4232 EV_FREQUENT_CHECK;
3348} 4233}
3349#endif 4234#endif
3350 4235
4236#if EV_CLEANUP_ENABLE
4237void
4238ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4239{
4240 if (expect_false (ev_is_active (w)))
4241 return;
4242
4243 EV_FREQUENT_CHECK;
4244
4245 ev_start (EV_A_ (W)w, ++cleanupcnt);
4246 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4247 cleanups [cleanupcnt - 1] = w;
4248
4249 /* cleanup watchers should never keep a refcount on the loop */
4250 ev_unref (EV_A);
4251 EV_FREQUENT_CHECK;
4252}
4253
4254void
4255ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4256{
4257 clear_pending (EV_A_ (W)w);
4258 if (expect_false (!ev_is_active (w)))
4259 return;
4260
4261 EV_FREQUENT_CHECK;
4262 ev_ref (EV_A);
4263
4264 {
4265 int active = ev_active (w);
4266
4267 cleanups [active - 1] = cleanups [--cleanupcnt];
4268 ev_active (cleanups [active - 1]) = active;
4269 }
4270
4271 ev_stop (EV_A_ (W)w);
4272
4273 EV_FREQUENT_CHECK;
4274}
4275#endif
4276
3351#if EV_ASYNC_ENABLE 4277#if EV_ASYNC_ENABLE
3352void 4278void
3353ev_async_start (EV_P_ ev_async *w) 4279ev_async_start (EV_P_ ev_async *w) EV_THROW
3354{ 4280{
3355 if (expect_false (ev_is_active (w))) 4281 if (expect_false (ev_is_active (w)))
3356 return; 4282 return;
4283
4284 w->sent = 0;
3357 4285
3358 evpipe_init (EV_A); 4286 evpipe_init (EV_A);
3359 4287
3360 EV_FREQUENT_CHECK; 4288 EV_FREQUENT_CHECK;
3361 4289
… …
3365 4293
3366 EV_FREQUENT_CHECK; 4294 EV_FREQUENT_CHECK;
3367} 4295}
3368 4296
3369void 4297void
3370ev_async_stop (EV_P_ ev_async *w) 4298ev_async_stop (EV_P_ ev_async *w) EV_THROW
3371{ 4299{
3372 clear_pending (EV_A_ (W)w); 4300 clear_pending (EV_A_ (W)w);
3373 if (expect_false (!ev_is_active (w))) 4301 if (expect_false (!ev_is_active (w)))
3374 return; 4302 return;
3375 4303
… …
3386 4314
3387 EV_FREQUENT_CHECK; 4315 EV_FREQUENT_CHECK;
3388} 4316}
3389 4317
3390void 4318void
3391ev_async_send (EV_P_ ev_async *w) 4319ev_async_send (EV_P_ ev_async *w) EV_THROW
3392{ 4320{
3393 w->sent = 1; 4321 w->sent = 1;
3394 evpipe_write (EV_A_ &gotasync); 4322 evpipe_write (EV_A_ &async_pending);
3395} 4323}
3396#endif 4324#endif
3397 4325
3398/*****************************************************************************/ 4326/*****************************************************************************/
3399 4327
… …
3433 4361
3434 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4362 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3435} 4363}
3436 4364
3437void 4365void
3438ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4366ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3439{ 4367{
3440 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4368 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3441 4369
3442 if (expect_false (!once)) 4370 if (expect_false (!once))
3443 { 4371 {
3444 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4372 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3445 return; 4373 return;
3446 } 4374 }
3447 4375
3448 once->cb = cb; 4376 once->cb = cb;
3449 once->arg = arg; 4377 once->arg = arg;
… …
3464} 4392}
3465 4393
3466/*****************************************************************************/ 4394/*****************************************************************************/
3467 4395
3468#if EV_WALK_ENABLE 4396#if EV_WALK_ENABLE
3469void 4397void ecb_cold
3470ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4398ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3471{ 4399{
3472 int i, j; 4400 int i, j;
3473 ev_watcher_list *wl, *wn; 4401 ev_watcher_list *wl, *wn;
3474 4402
3475 if (types & (EV_IO | EV_EMBED)) 4403 if (types & (EV_IO | EV_EMBED))
… …
3518 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4446 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3519#endif 4447#endif
3520 4448
3521#if EV_IDLE_ENABLE 4449#if EV_IDLE_ENABLE
3522 if (types & EV_IDLE) 4450 if (types & EV_IDLE)
3523 for (j = NUMPRI; i--; ) 4451 for (j = NUMPRI; j--; )
3524 for (i = idlecnt [j]; i--; ) 4452 for (i = idlecnt [j]; i--; )
3525 cb (EV_A_ EV_IDLE, idles [j][i]); 4453 cb (EV_A_ EV_IDLE, idles [j][i]);
3526#endif 4454#endif
3527 4455
3528#if EV_FORK_ENABLE 4456#if EV_FORK_ENABLE
… …
3536 if (types & EV_ASYNC) 4464 if (types & EV_ASYNC)
3537 for (i = asynccnt; i--; ) 4465 for (i = asynccnt; i--; )
3538 cb (EV_A_ EV_ASYNC, asyncs [i]); 4466 cb (EV_A_ EV_ASYNC, asyncs [i]);
3539#endif 4467#endif
3540 4468
4469#if EV_PREPARE_ENABLE
3541 if (types & EV_PREPARE) 4470 if (types & EV_PREPARE)
3542 for (i = preparecnt; i--; ) 4471 for (i = preparecnt; i--; )
3543#if EV_EMBED_ENABLE 4472# if EV_EMBED_ENABLE
3544 if (ev_cb (prepares [i]) != embed_prepare_cb) 4473 if (ev_cb (prepares [i]) != embed_prepare_cb)
3545#endif 4474# endif
3546 cb (EV_A_ EV_PREPARE, prepares [i]); 4475 cb (EV_A_ EV_PREPARE, prepares [i]);
4476#endif
3547 4477
4478#if EV_CHECK_ENABLE
3548 if (types & EV_CHECK) 4479 if (types & EV_CHECK)
3549 for (i = checkcnt; i--; ) 4480 for (i = checkcnt; i--; )
3550 cb (EV_A_ EV_CHECK, checks [i]); 4481 cb (EV_A_ EV_CHECK, checks [i]);
4482#endif
3551 4483
4484#if EV_SIGNAL_ENABLE
3552 if (types & EV_SIGNAL) 4485 if (types & EV_SIGNAL)
3553 for (i = 0; i < signalmax; ++i) 4486 for (i = 0; i < EV_NSIG - 1; ++i)
3554 for (wl = signals [i].head; wl; ) 4487 for (wl = signals [i].head; wl; )
3555 { 4488 {
3556 wn = wl->next; 4489 wn = wl->next;
3557 cb (EV_A_ EV_SIGNAL, wl); 4490 cb (EV_A_ EV_SIGNAL, wl);
3558 wl = wn; 4491 wl = wn;
3559 } 4492 }
4493#endif
3560 4494
4495#if EV_CHILD_ENABLE
3561 if (types & EV_CHILD) 4496 if (types & EV_CHILD)
3562 for (i = EV_PID_HASHSIZE; i--; ) 4497 for (i = (EV_PID_HASHSIZE); i--; )
3563 for (wl = childs [i]; wl; ) 4498 for (wl = childs [i]; wl; )
3564 { 4499 {
3565 wn = wl->next; 4500 wn = wl->next;
3566 cb (EV_A_ EV_CHILD, wl); 4501 cb (EV_A_ EV_CHILD, wl);
3567 wl = wn; 4502 wl = wn;
3568 } 4503 }
4504#endif
3569/* EV_STAT 0x00001000 /* stat data changed */ 4505/* EV_STAT 0x00001000 /* stat data changed */
3570/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4506/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3571} 4507}
3572#endif 4508#endif
3573 4509
3574#if EV_MULTIPLICITY 4510#if EV_MULTIPLICITY
3575 #include "ev_wrap.h" 4511 #include "ev_wrap.h"
3576#endif 4512#endif
3577 4513
3578#ifdef __cplusplus
3579}
3580#endif
3581

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