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Comparing libev/ev.c (file contents):
Revision 1.293 by root, Mon Jun 29 18:46:52 2009 UTC vs.
Revision 1.440 by root, Tue May 29 21:37:14 2012 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011,2012 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
10 * 1. Redistributions of source code must retain the above copyright notice, 10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer. 11 * this list of conditions and the following disclaimer.
12 * 12 *
13 * 2. Redistributions in binary form must reproduce the above copyright 13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the 14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution. 15 * documentation and/or other materials provided with the distribution.
16 * 16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
50# endif 46# endif
47
48#if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
52#endif
51 53
52# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
55# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
57# endif 59# endif
58# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
60# endif 62# endif
61# endif 63# endif
62# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
63# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
64# endif 66# endif
65 67
66# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
67# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
77# ifndef EV_USE_REALTIME 79# ifndef EV_USE_REALTIME
78# define EV_USE_REALTIME 0 80# define EV_USE_REALTIME 0
79# endif 81# endif
80# endif 82# endif
81 83
84# if HAVE_NANOSLEEP
82# ifndef EV_USE_NANOSLEEP 85# ifndef EV_USE_NANOSLEEP
83# if HAVE_NANOSLEEP
84# define EV_USE_NANOSLEEP 1 86# define EV_USE_NANOSLEEP EV_FEATURE_OS
87# endif
85# else 88# else
89# undef EV_USE_NANOSLEEP
86# define EV_USE_NANOSLEEP 0 90# define EV_USE_NANOSLEEP 0
91# endif
92
93# if HAVE_SELECT && HAVE_SYS_SELECT_H
94# ifndef EV_USE_SELECT
95# define EV_USE_SELECT EV_FEATURE_BACKENDS
87# endif 96# endif
97# else
98# undef EV_USE_SELECT
99# define EV_USE_SELECT 0
88# endif 100# endif
89 101
102# if HAVE_POLL && HAVE_POLL_H
90# ifndef EV_USE_SELECT 103# ifndef EV_USE_POLL
91# if HAVE_SELECT && HAVE_SYS_SELECT_H 104# define EV_USE_POLL EV_FEATURE_BACKENDS
92# define EV_USE_SELECT 1
93# else
94# define EV_USE_SELECT 0
95# endif 105# endif
96# endif
97
98# ifndef EV_USE_POLL
99# if HAVE_POLL && HAVE_POLL_H
100# define EV_USE_POLL 1
101# else 106# else
107# undef EV_USE_POLL
102# define EV_USE_POLL 0 108# define EV_USE_POLL 0
103# endif
104# endif 109# endif
105 110
106# ifndef EV_USE_EPOLL
107# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 111# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
108# define EV_USE_EPOLL 1 112# ifndef EV_USE_EPOLL
109# else 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
110# define EV_USE_EPOLL 0
111# endif 114# endif
115# else
116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0
112# endif 118# endif
113 119
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
114# ifndef EV_USE_KQUEUE 121# ifndef EV_USE_KQUEUE
115# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
116# define EV_USE_KQUEUE 1
117# else
118# define EV_USE_KQUEUE 0
119# endif 123# endif
124# else
125# undef EV_USE_KQUEUE
126# define EV_USE_KQUEUE 0
120# endif 127# endif
121 128
122# ifndef EV_USE_PORT
123# if HAVE_PORT_H && HAVE_PORT_CREATE 129# if HAVE_PORT_H && HAVE_PORT_CREATE
124# define EV_USE_PORT 1 130# ifndef EV_USE_PORT
125# else 131# define EV_USE_PORT EV_FEATURE_BACKENDS
126# define EV_USE_PORT 0
127# endif 132# endif
133# else
134# undef EV_USE_PORT
135# define EV_USE_PORT 0
128# endif 136# endif
129 137
130# ifndef EV_USE_INOTIFY
131# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 138# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
132# define EV_USE_INOTIFY 1 139# ifndef EV_USE_INOTIFY
133# else
134# define EV_USE_INOTIFY 0 140# define EV_USE_INOTIFY EV_FEATURE_OS
135# endif 141# endif
142# else
143# undef EV_USE_INOTIFY
144# define EV_USE_INOTIFY 0
136# endif 145# endif
137 146
147# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
138# ifndef EV_USE_EVENTFD 148# ifndef EV_USE_SIGNALFD
139# if HAVE_EVENTFD 149# define EV_USE_SIGNALFD EV_FEATURE_OS
140# define EV_USE_EVENTFD 1
141# else
142# define EV_USE_EVENTFD 0
143# endif 150# endif
151# else
152# undef EV_USE_SIGNALFD
153# define EV_USE_SIGNALFD 0
154# endif
155
156# if HAVE_EVENTFD
157# ifndef EV_USE_EVENTFD
158# define EV_USE_EVENTFD EV_FEATURE_OS
159# endif
160# else
161# undef EV_USE_EVENTFD
162# define EV_USE_EVENTFD 0
144# endif 163# endif
145 164
146#endif 165#endif
147 166
148#include <math.h>
149#include <stdlib.h> 167#include <stdlib.h>
168#include <string.h>
150#include <fcntl.h> 169#include <fcntl.h>
151#include <stddef.h> 170#include <stddef.h>
152 171
153#include <stdio.h> 172#include <stdio.h>
154 173
155#include <assert.h> 174#include <assert.h>
156#include <errno.h> 175#include <errno.h>
157#include <sys/types.h> 176#include <sys/types.h>
158#include <time.h> 177#include <time.h>
178#include <limits.h>
159 179
160#include <signal.h> 180#include <signal.h>
161 181
162#ifdef EV_H 182#ifdef EV_H
163# include EV_H 183# include EV_H
164#else 184#else
165# include "ev.h" 185# include "ev.h"
186#endif
187
188#if EV_NO_THREADS
189# undef EV_NO_SMP
190# define EV_NO_SMP 1
191# undef ECB_NO_THREADS
192# define ECB_NO_THREADS 1
193#endif
194#if EV_NO_SMP
195# undef EV_NO_SMP
196# define ECB_NO_SMP 1
166#endif 197#endif
167 198
168#ifndef _WIN32 199#ifndef _WIN32
169# include <sys/time.h> 200# include <sys/time.h>
170# include <sys/wait.h> 201# include <sys/wait.h>
171# include <unistd.h> 202# include <unistd.h>
172#else 203#else
173# include <io.h> 204# include <io.h>
174# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
206# include <winsock2.h>
175# include <windows.h> 207# include <windows.h>
176# ifndef EV_SELECT_IS_WINSOCKET 208# ifndef EV_SELECT_IS_WINSOCKET
177# define EV_SELECT_IS_WINSOCKET 1 209# define EV_SELECT_IS_WINSOCKET 1
178# endif 210# endif
211# undef EV_AVOID_STDIO
179#endif 212#endif
213
214/* OS X, in its infinite idiocy, actually HARDCODES
215 * a limit of 1024 into their select. Where people have brains,
216 * OS X engineers apparently have a vacuum. Or maybe they were
217 * ordered to have a vacuum, or they do anything for money.
218 * This might help. Or not.
219 */
220#define _DARWIN_UNLIMITED_SELECT 1
180 221
181/* this block tries to deduce configuration from header-defined symbols and defaults */ 222/* this block tries to deduce configuration from header-defined symbols and defaults */
223
224/* try to deduce the maximum number of signals on this platform */
225#if defined EV_NSIG
226/* use what's provided */
227#elif defined NSIG
228# define EV_NSIG (NSIG)
229#elif defined _NSIG
230# define EV_NSIG (_NSIG)
231#elif defined SIGMAX
232# define EV_NSIG (SIGMAX+1)
233#elif defined SIG_MAX
234# define EV_NSIG (SIG_MAX+1)
235#elif defined _SIG_MAX
236# define EV_NSIG (_SIG_MAX+1)
237#elif defined MAXSIG
238# define EV_NSIG (MAXSIG+1)
239#elif defined MAX_SIG
240# define EV_NSIG (MAX_SIG+1)
241#elif defined SIGARRAYSIZE
242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
243#elif defined _sys_nsig
244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
245#else
246# error "unable to find value for NSIG, please report"
247/* to make it compile regardless, just remove the above line, */
248/* but consider reporting it, too! :) */
249# define EV_NSIG 65
250#endif
251
252#ifndef EV_USE_FLOOR
253# define EV_USE_FLOOR 0
254#endif
182 255
183#ifndef EV_USE_CLOCK_SYSCALL 256#ifndef EV_USE_CLOCK_SYSCALL
184# if __linux && __GLIBC__ >= 2 257# if __linux && __GLIBC__ >= 2
185# define EV_USE_CLOCK_SYSCALL 1 258# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
186# else 259# else
187# define EV_USE_CLOCK_SYSCALL 0 260# define EV_USE_CLOCK_SYSCALL 0
188# endif 261# endif
189#endif 262#endif
190 263
191#ifndef EV_USE_MONOTONIC 264#ifndef EV_USE_MONOTONIC
192# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 265# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
193# define EV_USE_MONOTONIC 1 266# define EV_USE_MONOTONIC EV_FEATURE_OS
194# else 267# else
195# define EV_USE_MONOTONIC 0 268# define EV_USE_MONOTONIC 0
196# endif 269# endif
197#endif 270#endif
198 271
… …
200# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 273# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
201#endif 274#endif
202 275
203#ifndef EV_USE_NANOSLEEP 276#ifndef EV_USE_NANOSLEEP
204# if _POSIX_C_SOURCE >= 199309L 277# if _POSIX_C_SOURCE >= 199309L
205# define EV_USE_NANOSLEEP 1 278# define EV_USE_NANOSLEEP EV_FEATURE_OS
206# else 279# else
207# define EV_USE_NANOSLEEP 0 280# define EV_USE_NANOSLEEP 0
208# endif 281# endif
209#endif 282#endif
210 283
211#ifndef EV_USE_SELECT 284#ifndef EV_USE_SELECT
212# define EV_USE_SELECT 1 285# define EV_USE_SELECT EV_FEATURE_BACKENDS
213#endif 286#endif
214 287
215#ifndef EV_USE_POLL 288#ifndef EV_USE_POLL
216# ifdef _WIN32 289# ifdef _WIN32
217# define EV_USE_POLL 0 290# define EV_USE_POLL 0
218# else 291# else
219# define EV_USE_POLL 1 292# define EV_USE_POLL EV_FEATURE_BACKENDS
220# endif 293# endif
221#endif 294#endif
222 295
223#ifndef EV_USE_EPOLL 296#ifndef EV_USE_EPOLL
224# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 297# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
225# define EV_USE_EPOLL 1 298# define EV_USE_EPOLL EV_FEATURE_BACKENDS
226# else 299# else
227# define EV_USE_EPOLL 0 300# define EV_USE_EPOLL 0
228# endif 301# endif
229#endif 302#endif
230 303
… …
236# define EV_USE_PORT 0 309# define EV_USE_PORT 0
237#endif 310#endif
238 311
239#ifndef EV_USE_INOTIFY 312#ifndef EV_USE_INOTIFY
240# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 313# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
241# define EV_USE_INOTIFY 1 314# define EV_USE_INOTIFY EV_FEATURE_OS
242# else 315# else
243# define EV_USE_INOTIFY 0 316# define EV_USE_INOTIFY 0
244# endif 317# endif
245#endif 318#endif
246 319
247#ifndef EV_PID_HASHSIZE 320#ifndef EV_PID_HASHSIZE
248# if EV_MINIMAL 321# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
249# define EV_PID_HASHSIZE 1
250# else
251# define EV_PID_HASHSIZE 16
252# endif
253#endif 322#endif
254 323
255#ifndef EV_INOTIFY_HASHSIZE 324#ifndef EV_INOTIFY_HASHSIZE
256# if EV_MINIMAL 325# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
257# define EV_INOTIFY_HASHSIZE 1
258# else
259# define EV_INOTIFY_HASHSIZE 16
260# endif
261#endif 326#endif
262 327
263#ifndef EV_USE_EVENTFD 328#ifndef EV_USE_EVENTFD
264# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 329# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
265# define EV_USE_EVENTFD 1 330# define EV_USE_EVENTFD EV_FEATURE_OS
266# else 331# else
267# define EV_USE_EVENTFD 0 332# define EV_USE_EVENTFD 0
333# endif
334#endif
335
336#ifndef EV_USE_SIGNALFD
337# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
338# define EV_USE_SIGNALFD EV_FEATURE_OS
339# else
340# define EV_USE_SIGNALFD 0
268# endif 341# endif
269#endif 342#endif
270 343
271#if 0 /* debugging */ 344#if 0 /* debugging */
272# define EV_VERIFY 3 345# define EV_VERIFY 3
273# define EV_USE_4HEAP 1 346# define EV_USE_4HEAP 1
274# define EV_HEAP_CACHE_AT 1 347# define EV_HEAP_CACHE_AT 1
275#endif 348#endif
276 349
277#ifndef EV_VERIFY 350#ifndef EV_VERIFY
278# define EV_VERIFY !EV_MINIMAL 351# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
279#endif 352#endif
280 353
281#ifndef EV_USE_4HEAP 354#ifndef EV_USE_4HEAP
282# define EV_USE_4HEAP !EV_MINIMAL 355# define EV_USE_4HEAP EV_FEATURE_DATA
283#endif 356#endif
284 357
285#ifndef EV_HEAP_CACHE_AT 358#ifndef EV_HEAP_CACHE_AT
286# define EV_HEAP_CACHE_AT !EV_MINIMAL 359# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
287#endif 360#endif
288 361
289/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 362/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
290/* which makes programs even slower. might work on other unices, too. */ 363/* which makes programs even slower. might work on other unices, too. */
291#if EV_USE_CLOCK_SYSCALL 364#if EV_USE_CLOCK_SYSCALL
292# include <syscall.h> 365# include <sys/syscall.h>
293# ifdef SYS_clock_gettime 366# ifdef SYS_clock_gettime
294# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 367# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
295# undef EV_USE_MONOTONIC 368# undef EV_USE_MONOTONIC
296# define EV_USE_MONOTONIC 1 369# define EV_USE_MONOTONIC 1
297# else 370# else
… …
300# endif 373# endif
301#endif 374#endif
302 375
303/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 376/* this block fixes any misconfiguration where we know we run into trouble otherwise */
304 377
378#ifdef _AIX
379/* AIX has a completely broken poll.h header */
380# undef EV_USE_POLL
381# define EV_USE_POLL 0
382#endif
383
305#ifndef CLOCK_MONOTONIC 384#ifndef CLOCK_MONOTONIC
306# undef EV_USE_MONOTONIC 385# undef EV_USE_MONOTONIC
307# define EV_USE_MONOTONIC 0 386# define EV_USE_MONOTONIC 0
308#endif 387#endif
309 388
… …
316# undef EV_USE_INOTIFY 395# undef EV_USE_INOTIFY
317# define EV_USE_INOTIFY 0 396# define EV_USE_INOTIFY 0
318#endif 397#endif
319 398
320#if !EV_USE_NANOSLEEP 399#if !EV_USE_NANOSLEEP
321# ifndef _WIN32 400/* hp-ux has it in sys/time.h, which we unconditionally include above */
401# if !defined _WIN32 && !defined __hpux
322# include <sys/select.h> 402# include <sys/select.h>
323# endif 403# endif
324#endif 404#endif
325 405
326#if EV_USE_INOTIFY 406#if EV_USE_INOTIFY
327# include <sys/utsname.h>
328# include <sys/statfs.h> 407# include <sys/statfs.h>
329# include <sys/inotify.h> 408# include <sys/inotify.h>
330/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 409/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
331# ifndef IN_DONT_FOLLOW 410# ifndef IN_DONT_FOLLOW
332# undef EV_USE_INOTIFY 411# undef EV_USE_INOTIFY
333# define EV_USE_INOTIFY 0 412# define EV_USE_INOTIFY 0
334# endif 413# endif
335#endif 414#endif
336 415
337#if EV_SELECT_IS_WINSOCKET
338# include <winsock.h>
339#endif
340
341#if EV_USE_EVENTFD 416#if EV_USE_EVENTFD
342/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 417/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
343# include <stdint.h> 418# include <stdint.h>
344# ifdef __cplusplus 419# ifndef EFD_NONBLOCK
345extern "C" { 420# define EFD_NONBLOCK O_NONBLOCK
346# endif 421# endif
347int eventfd (unsigned int initval, int flags); 422# ifndef EFD_CLOEXEC
348# ifdef __cplusplus 423# ifdef O_CLOEXEC
349} 424# define EFD_CLOEXEC O_CLOEXEC
425# else
426# define EFD_CLOEXEC 02000000
427# endif
350# endif 428# endif
429EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
430#endif
431
432#if EV_USE_SIGNALFD
433/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
434# include <stdint.h>
435# ifndef SFD_NONBLOCK
436# define SFD_NONBLOCK O_NONBLOCK
437# endif
438# ifndef SFD_CLOEXEC
439# ifdef O_CLOEXEC
440# define SFD_CLOEXEC O_CLOEXEC
441# else
442# define SFD_CLOEXEC 02000000
443# endif
444# endif
445EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
446
447struct signalfd_siginfo
448{
449 uint32_t ssi_signo;
450 char pad[128 - sizeof (uint32_t)];
451};
351#endif 452#endif
352 453
353/**/ 454/**/
354 455
355#if EV_VERIFY >= 3 456#if EV_VERIFY >= 3
356# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 457# define EV_FREQUENT_CHECK ev_verify (EV_A)
357#else 458#else
358# define EV_FREQUENT_CHECK do { } while (0) 459# define EV_FREQUENT_CHECK do { } while (0)
359#endif 460#endif
360 461
361/* 462/*
362 * This is used to avoid floating point rounding problems. 463 * This is used to work around floating point rounding problems.
363 * It is added to ev_rt_now when scheduling periodics
364 * to ensure progress, time-wise, even when rounding
365 * errors are against us.
366 * This value is good at least till the year 4000. 464 * This value is good at least till the year 4000.
367 * Better solutions welcome.
368 */ 465 */
369#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 466#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
467/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
370 468
371#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 469#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
372#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 470#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
373/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
374 471
472#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
473#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
474
475/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
476/* ECB.H BEGIN */
477/*
478 * libecb - http://software.schmorp.de/pkg/libecb
479 *
480 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de>
481 * Copyright (©) 2011 Emanuele Giaquinta
482 * All rights reserved.
483 *
484 * Redistribution and use in source and binary forms, with or without modifica-
485 * tion, are permitted provided that the following conditions are met:
486 *
487 * 1. Redistributions of source code must retain the above copyright notice,
488 * this list of conditions and the following disclaimer.
489 *
490 * 2. Redistributions in binary form must reproduce the above copyright
491 * notice, this list of conditions and the following disclaimer in the
492 * documentation and/or other materials provided with the distribution.
493 *
494 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
495 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
496 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
497 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
498 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
499 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
500 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
501 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
502 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
503 * OF THE POSSIBILITY OF SUCH DAMAGE.
504 */
505
506#ifndef ECB_H
507#define ECB_H
508
509/* 16 bits major, 16 bits minor */
510#define ECB_VERSION 0x00010001
511
512#ifdef _WIN32
513 typedef signed char int8_t;
514 typedef unsigned char uint8_t;
515 typedef signed short int16_t;
516 typedef unsigned short uint16_t;
517 typedef signed int int32_t;
518 typedef unsigned int uint32_t;
375#if __GNUC__ >= 4 519 #if __GNUC__
376# define expect(expr,value) __builtin_expect ((expr),(value)) 520 typedef signed long long int64_t;
377# define noinline __attribute__ ((noinline)) 521 typedef unsigned long long uint64_t;
522 #else /* _MSC_VER || __BORLANDC__ */
523 typedef signed __int64 int64_t;
524 typedef unsigned __int64 uint64_t;
525 #endif
526 #ifdef _WIN64
527 #define ECB_PTRSIZE 8
528 typedef uint64_t uintptr_t;
529 typedef int64_t intptr_t;
530 #else
531 #define ECB_PTRSIZE 4
532 typedef uint32_t uintptr_t;
533 typedef int32_t intptr_t;
534 #endif
535 typedef intptr_t ptrdiff_t;
378#else 536#else
379# define expect(expr,value) (expr) 537 #include <inttypes.h>
380# define noinline 538 #if UINTMAX_MAX > 0xffffffffU
381# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 539 #define ECB_PTRSIZE 8
382# define inline 540 #else
541 #define ECB_PTRSIZE 4
542 #endif
383# endif 543#endif
544
545/* many compilers define _GNUC_ to some versions but then only implement
546 * what their idiot authors think are the "more important" extensions,
547 * causing enormous grief in return for some better fake benchmark numbers.
548 * or so.
549 * we try to detect these and simply assume they are not gcc - if they have
550 * an issue with that they should have done it right in the first place.
551 */
552#ifndef ECB_GCC_VERSION
553 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
554 #define ECB_GCC_VERSION(major,minor) 0
555 #else
556 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
384#endif 557 #endif
558#endif
385 559
560#define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */
561#define ECB_C99 (__STDC_VERSION__ >= 199901L)
562#define ECB_C11 (__STDC_VERSION__ >= 201112L)
563#define ECB_CPP (__cplusplus+0)
564#define ECB_CPP98 (__cplusplus >= 199711L)
565#define ECB_CPP11 (__cplusplus >= 201103L)
566
567/*****************************************************************************/
568
569/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
570/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
571
572#if ECB_NO_THREADS
573 #define ECB_NO_SMP 1
574#endif
575
576#if ECB_NO_SMP
577 #define ECB_MEMORY_FENCE do { } while (0)
578#endif
579
580#ifndef ECB_MEMORY_FENCE
581 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
582 #if __i386 || __i386__
583 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
584 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
585 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
586 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
587 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
588 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
589 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
590 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
591 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
592 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
593 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
594 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
595 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
596 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
597 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
598 #elif __sparc || __sparc__
599 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
600 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
601 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
602 #elif defined __s390__ || defined __s390x__
603 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
604 #elif defined __mips__
605 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
606 #elif defined __alpha__
607 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
608 #elif defined __hppa__
609 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
610 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
611 #elif defined __ia64__
612 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
613 #endif
614 #endif
615#endif
616
617#ifndef ECB_MEMORY_FENCE
618 #if ECB_GCC_VERSION(4,7)
619 /* see comment below about the C11 memory model. in short - avoid */
620 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
621 #elif defined __clang && __has_feature (cxx_atomic)
622 /* see above */
623 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
624 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
625 #define ECB_MEMORY_FENCE __sync_synchronize ()
626 #elif _MSC_VER >= 1400 /* VC++ 2005 */
627 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
628 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
629 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
630 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
631 #elif defined _WIN32
632 #include <WinNT.h>
633 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
634 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
635 #include <mbarrier.h>
636 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
637 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
638 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
639 #elif __xlC__
640 #define ECB_MEMORY_FENCE __sync ()
641 #endif
642#endif
643
644#ifndef ECB_MEMORY_FENCE
645 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
646 /* we assume that these memory fences work on all variables/all memory accesses, */
647 /* not just C11 atomics and atomic accesses */
648 #include <stdatomic.h>
649 /* unfortunately, the C11 memory model seems to be very limited, and unable to express */
650 /* simple barrier semantics. That means we need to take out thor's hammer. */
651 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
652 #endif
653#endif
654
655#ifndef ECB_MEMORY_FENCE
656 #if !ECB_AVOID_PTHREADS
657 /*
658 * if you get undefined symbol references to pthread_mutex_lock,
659 * or failure to find pthread.h, then you should implement
660 * the ECB_MEMORY_FENCE operations for your cpu/compiler
661 * OR provide pthread.h and link against the posix thread library
662 * of your system.
663 */
664 #include <pthread.h>
665 #define ECB_NEEDS_PTHREADS 1
666 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
667
668 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
669 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
670 #endif
671#endif
672
673#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
674 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
675#endif
676
677#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
678 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
679#endif
680
681/*****************************************************************************/
682
683#if __cplusplus
684 #define ecb_inline static inline
685#elif ECB_GCC_VERSION(2,5)
686 #define ecb_inline static __inline__
687#elif ECB_C99
688 #define ecb_inline static inline
689#else
690 #define ecb_inline static
691#endif
692
693#if ECB_GCC_VERSION(3,3)
694 #define ecb_restrict __restrict__
695#elif ECB_C99
696 #define ecb_restrict restrict
697#else
698 #define ecb_restrict
699#endif
700
701typedef int ecb_bool;
702
703#define ECB_CONCAT_(a, b) a ## b
704#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
705#define ECB_STRINGIFY_(a) # a
706#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
707
708#define ecb_function_ ecb_inline
709
710#if ECB_GCC_VERSION(3,1)
711 #define ecb_attribute(attrlist) __attribute__(attrlist)
712 #define ecb_is_constant(expr) __builtin_constant_p (expr)
713 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
714 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
715#else
716 #define ecb_attribute(attrlist)
717 #define ecb_is_constant(expr) 0
718 #define ecb_expect(expr,value) (expr)
719 #define ecb_prefetch(addr,rw,locality)
720#endif
721
722/* no emulation for ecb_decltype */
723#if ECB_GCC_VERSION(4,5)
724 #define ecb_decltype(x) __decltype(x)
725#elif ECB_GCC_VERSION(3,0)
726 #define ecb_decltype(x) __typeof(x)
727#endif
728
729#define ecb_noinline ecb_attribute ((__noinline__))
730#define ecb_unused ecb_attribute ((__unused__))
731#define ecb_const ecb_attribute ((__const__))
732#define ecb_pure ecb_attribute ((__pure__))
733
734#if ECB_C11
735 #define ecb_noreturn _Noreturn
736#else
737 #define ecb_noreturn ecb_attribute ((__noreturn__))
738#endif
739
740#if ECB_GCC_VERSION(4,3)
741 #define ecb_artificial ecb_attribute ((__artificial__))
742 #define ecb_hot ecb_attribute ((__hot__))
743 #define ecb_cold ecb_attribute ((__cold__))
744#else
745 #define ecb_artificial
746 #define ecb_hot
747 #define ecb_cold
748#endif
749
750/* put around conditional expressions if you are very sure that the */
751/* expression is mostly true or mostly false. note that these return */
752/* booleans, not the expression. */
386#define expect_false(expr) expect ((expr) != 0, 0) 753#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
387#define expect_true(expr) expect ((expr) != 0, 1) 754#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
755/* for compatibility to the rest of the world */
756#define ecb_likely(expr) ecb_expect_true (expr)
757#define ecb_unlikely(expr) ecb_expect_false (expr)
758
759/* count trailing zero bits and count # of one bits */
760#if ECB_GCC_VERSION(3,4)
761 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
762 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
763 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
764 #define ecb_ctz32(x) __builtin_ctz (x)
765 #define ecb_ctz64(x) __builtin_ctzll (x)
766 #define ecb_popcount32(x) __builtin_popcount (x)
767 /* no popcountll */
768#else
769 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
770 ecb_function_ int
771 ecb_ctz32 (uint32_t x)
772 {
773 int r = 0;
774
775 x &= ~x + 1; /* this isolates the lowest bit */
776
777#if ECB_branchless_on_i386
778 r += !!(x & 0xaaaaaaaa) << 0;
779 r += !!(x & 0xcccccccc) << 1;
780 r += !!(x & 0xf0f0f0f0) << 2;
781 r += !!(x & 0xff00ff00) << 3;
782 r += !!(x & 0xffff0000) << 4;
783#else
784 if (x & 0xaaaaaaaa) r += 1;
785 if (x & 0xcccccccc) r += 2;
786 if (x & 0xf0f0f0f0) r += 4;
787 if (x & 0xff00ff00) r += 8;
788 if (x & 0xffff0000) r += 16;
789#endif
790
791 return r;
792 }
793
794 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
795 ecb_function_ int
796 ecb_ctz64 (uint64_t x)
797 {
798 int shift = x & 0xffffffffU ? 0 : 32;
799 return ecb_ctz32 (x >> shift) + shift;
800 }
801
802 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
803 ecb_function_ int
804 ecb_popcount32 (uint32_t x)
805 {
806 x -= (x >> 1) & 0x55555555;
807 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
808 x = ((x >> 4) + x) & 0x0f0f0f0f;
809 x *= 0x01010101;
810
811 return x >> 24;
812 }
813
814 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
815 ecb_function_ int ecb_ld32 (uint32_t x)
816 {
817 int r = 0;
818
819 if (x >> 16) { x >>= 16; r += 16; }
820 if (x >> 8) { x >>= 8; r += 8; }
821 if (x >> 4) { x >>= 4; r += 4; }
822 if (x >> 2) { x >>= 2; r += 2; }
823 if (x >> 1) { r += 1; }
824
825 return r;
826 }
827
828 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
829 ecb_function_ int ecb_ld64 (uint64_t x)
830 {
831 int r = 0;
832
833 if (x >> 32) { x >>= 32; r += 32; }
834
835 return r + ecb_ld32 (x);
836 }
837#endif
838
839ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;
840ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
841ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;
842ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
843
844ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
845ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
846{
847 return ( (x * 0x0802U & 0x22110U)
848 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
849}
850
851ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
852ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
853{
854 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
855 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
856 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
857 x = ( x >> 8 ) | ( x << 8);
858
859 return x;
860}
861
862ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
863ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
864{
865 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
866 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
867 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
868 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
869 x = ( x >> 16 ) | ( x << 16);
870
871 return x;
872}
873
874/* popcount64 is only available on 64 bit cpus as gcc builtin */
875/* so for this version we are lazy */
876ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
877ecb_function_ int
878ecb_popcount64 (uint64_t x)
879{
880 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
881}
882
883ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
884ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
885ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
886ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
887ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
888ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
889ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
890ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
891
892ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
893ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
894ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
895ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
896ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
897ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
898ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
899ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
900
901#if ECB_GCC_VERSION(4,3)
902 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
903 #define ecb_bswap32(x) __builtin_bswap32 (x)
904 #define ecb_bswap64(x) __builtin_bswap64 (x)
905#else
906 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
907 ecb_function_ uint16_t
908 ecb_bswap16 (uint16_t x)
909 {
910 return ecb_rotl16 (x, 8);
911 }
912
913 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
914 ecb_function_ uint32_t
915 ecb_bswap32 (uint32_t x)
916 {
917 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
918 }
919
920 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
921 ecb_function_ uint64_t
922 ecb_bswap64 (uint64_t x)
923 {
924 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
925 }
926#endif
927
928#if ECB_GCC_VERSION(4,5)
929 #define ecb_unreachable() __builtin_unreachable ()
930#else
931 /* this seems to work fine, but gcc always emits a warning for it :/ */
932 ecb_inline void ecb_unreachable (void) ecb_noreturn;
933 ecb_inline void ecb_unreachable (void) { }
934#endif
935
936/* try to tell the compiler that some condition is definitely true */
937#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
938
939ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
940ecb_inline unsigned char
941ecb_byteorder_helper (void)
942{
943 const uint32_t u = 0x11223344;
944 return *(unsigned char *)&u;
945}
946
947ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
948ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
949ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
950ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
951
952#if ECB_GCC_VERSION(3,0) || ECB_C99
953 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
954#else
955 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
956#endif
957
958#if __cplusplus
959 template<typename T>
960 static inline T ecb_div_rd (T val, T div)
961 {
962 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
963 }
964 template<typename T>
965 static inline T ecb_div_ru (T val, T div)
966 {
967 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
968 }
969#else
970 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
971 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
972#endif
973
974#if ecb_cplusplus_does_not_suck
975 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
976 template<typename T, int N>
977 static inline int ecb_array_length (const T (&arr)[N])
978 {
979 return N;
980 }
981#else
982 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
983#endif
984
985#endif
986
987/* ECB.H END */
988
989#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
990/* if your architecture doesn't need memory fences, e.g. because it is
991 * single-cpu/core, or if you use libev in a project that doesn't use libev
992 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
993 * libev, in which cases the memory fences become nops.
994 * alternatively, you can remove this #error and link against libpthread,
995 * which will then provide the memory fences.
996 */
997# error "memory fences not defined for your architecture, please report"
998#endif
999
1000#ifndef ECB_MEMORY_FENCE
1001# define ECB_MEMORY_FENCE do { } while (0)
1002# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1003# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1004#endif
1005
1006#define expect_false(cond) ecb_expect_false (cond)
1007#define expect_true(cond) ecb_expect_true (cond)
1008#define noinline ecb_noinline
1009
388#define inline_size static inline 1010#define inline_size ecb_inline
389 1011
390#if EV_MINIMAL 1012#if EV_FEATURE_CODE
1013# define inline_speed ecb_inline
1014#else
391# define inline_speed static noinline 1015# define inline_speed static noinline
1016#endif
1017
1018#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
1019
1020#if EV_MINPRI == EV_MAXPRI
1021# define ABSPRI(w) (((W)w), 0)
392#else 1022#else
393# define inline_speed static inline
394#endif
395
396#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
397#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1023# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
1024#endif
398 1025
399#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1026#define EMPTY /* required for microsofts broken pseudo-c compiler */
400#define EMPTY2(a,b) /* used to suppress some warnings */ 1027#define EMPTY2(a,b) /* used to suppress some warnings */
401 1028
402typedef ev_watcher *W; 1029typedef ev_watcher *W;
… …
406#define ev_active(w) ((W)(w))->active 1033#define ev_active(w) ((W)(w))->active
407#define ev_at(w) ((WT)(w))->at 1034#define ev_at(w) ((WT)(w))->at
408 1035
409#if EV_USE_REALTIME 1036#if EV_USE_REALTIME
410/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1037/* sig_atomic_t is used to avoid per-thread variables or locking but still */
411/* giving it a reasonably high chance of working on typical architetcures */ 1038/* giving it a reasonably high chance of working on typical architectures */
412static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1039static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
413#endif 1040#endif
414 1041
415#if EV_USE_MONOTONIC 1042#if EV_USE_MONOTONIC
416static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1043static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
417#endif 1044#endif
418 1045
1046#ifndef EV_FD_TO_WIN32_HANDLE
1047# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
1048#endif
1049#ifndef EV_WIN32_HANDLE_TO_FD
1050# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
1051#endif
1052#ifndef EV_WIN32_CLOSE_FD
1053# define EV_WIN32_CLOSE_FD(fd) close (fd)
1054#endif
1055
419#ifdef _WIN32 1056#ifdef _WIN32
420# include "ev_win32.c" 1057# include "ev_win32.c"
421#endif 1058#endif
422 1059
423/*****************************************************************************/ 1060/*****************************************************************************/
424 1061
1062/* define a suitable floor function (only used by periodics atm) */
1063
1064#if EV_USE_FLOOR
1065# include <math.h>
1066# define ev_floor(v) floor (v)
1067#else
1068
1069#include <float.h>
1070
1071/* a floor() replacement function, should be independent of ev_tstamp type */
1072static ev_tstamp noinline
1073ev_floor (ev_tstamp v)
1074{
1075 /* the choice of shift factor is not terribly important */
1076#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1077 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1078#else
1079 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1080#endif
1081
1082 /* argument too large for an unsigned long? */
1083 if (expect_false (v >= shift))
1084 {
1085 ev_tstamp f;
1086
1087 if (v == v - 1.)
1088 return v; /* very large number */
1089
1090 f = shift * ev_floor (v * (1. / shift));
1091 return f + ev_floor (v - f);
1092 }
1093
1094 /* special treatment for negative args? */
1095 if (expect_false (v < 0.))
1096 {
1097 ev_tstamp f = -ev_floor (-v);
1098
1099 return f - (f == v ? 0 : 1);
1100 }
1101
1102 /* fits into an unsigned long */
1103 return (unsigned long)v;
1104}
1105
1106#endif
1107
1108/*****************************************************************************/
1109
1110#ifdef __linux
1111# include <sys/utsname.h>
1112#endif
1113
1114static unsigned int noinline ecb_cold
1115ev_linux_version (void)
1116{
1117#ifdef __linux
1118 unsigned int v = 0;
1119 struct utsname buf;
1120 int i;
1121 char *p = buf.release;
1122
1123 if (uname (&buf))
1124 return 0;
1125
1126 for (i = 3+1; --i; )
1127 {
1128 unsigned int c = 0;
1129
1130 for (;;)
1131 {
1132 if (*p >= '0' && *p <= '9')
1133 c = c * 10 + *p++ - '0';
1134 else
1135 {
1136 p += *p == '.';
1137 break;
1138 }
1139 }
1140
1141 v = (v << 8) | c;
1142 }
1143
1144 return v;
1145#else
1146 return 0;
1147#endif
1148}
1149
1150/*****************************************************************************/
1151
1152#if EV_AVOID_STDIO
1153static void noinline ecb_cold
1154ev_printerr (const char *msg)
1155{
1156 write (STDERR_FILENO, msg, strlen (msg));
1157}
1158#endif
1159
425static void (*syserr_cb)(const char *msg); 1160static void (*syserr_cb)(const char *msg) EV_THROW;
426 1161
427void 1162void ecb_cold
428ev_set_syserr_cb (void (*cb)(const char *msg)) 1163ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
429{ 1164{
430 syserr_cb = cb; 1165 syserr_cb = cb;
431} 1166}
432 1167
433static void noinline 1168static void noinline ecb_cold
434ev_syserr (const char *msg) 1169ev_syserr (const char *msg)
435{ 1170{
436 if (!msg) 1171 if (!msg)
437 msg = "(libev) system error"; 1172 msg = "(libev) system error";
438 1173
439 if (syserr_cb) 1174 if (syserr_cb)
440 syserr_cb (msg); 1175 syserr_cb (msg);
441 else 1176 else
442 { 1177 {
1178#if EV_AVOID_STDIO
1179 ev_printerr (msg);
1180 ev_printerr (": ");
1181 ev_printerr (strerror (errno));
1182 ev_printerr ("\n");
1183#else
443 perror (msg); 1184 perror (msg);
1185#endif
444 abort (); 1186 abort ();
445 } 1187 }
446} 1188}
447 1189
448static void * 1190static void *
449ev_realloc_emul (void *ptr, long size) 1191ev_realloc_emul (void *ptr, long size) EV_THROW
450{ 1192{
1193#if __GLIBC__
1194 return realloc (ptr, size);
1195#else
451 /* some systems, notably openbsd and darwin, fail to properly 1196 /* some systems, notably openbsd and darwin, fail to properly
452 * implement realloc (x, 0) (as required by both ansi c-98 and 1197 * implement realloc (x, 0) (as required by both ansi c-89 and
453 * the single unix specification, so work around them here. 1198 * the single unix specification, so work around them here.
454 */ 1199 */
455 1200
456 if (size) 1201 if (size)
457 return realloc (ptr, size); 1202 return realloc (ptr, size);
458 1203
459 free (ptr); 1204 free (ptr);
460 return 0; 1205 return 0;
1206#endif
461} 1207}
462 1208
463static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1209static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
464 1210
465void 1211void ecb_cold
466ev_set_allocator (void *(*cb)(void *ptr, long size)) 1212ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
467{ 1213{
468 alloc = cb; 1214 alloc = cb;
469} 1215}
470 1216
471inline_speed void * 1217inline_speed void *
… …
473{ 1219{
474 ptr = alloc (ptr, size); 1220 ptr = alloc (ptr, size);
475 1221
476 if (!ptr && size) 1222 if (!ptr && size)
477 { 1223 {
1224#if EV_AVOID_STDIO
1225 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1226#else
478 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1227 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1228#endif
479 abort (); 1229 abort ();
480 } 1230 }
481 1231
482 return ptr; 1232 return ptr;
483} 1233}
… …
485#define ev_malloc(size) ev_realloc (0, (size)) 1235#define ev_malloc(size) ev_realloc (0, (size))
486#define ev_free(ptr) ev_realloc ((ptr), 0) 1236#define ev_free(ptr) ev_realloc ((ptr), 0)
487 1237
488/*****************************************************************************/ 1238/*****************************************************************************/
489 1239
1240/* set in reify when reification needed */
1241#define EV_ANFD_REIFY 1
1242
490/* file descriptor info structure */ 1243/* file descriptor info structure */
491typedef struct 1244typedef struct
492{ 1245{
493 WL head; 1246 WL head;
494 unsigned char events; /* the events watched for */ 1247 unsigned char events; /* the events watched for */
495 unsigned char reify; /* flag set when this ANFD needs reification */ 1248 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
496 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1249 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
497 unsigned char unused; 1250 unsigned char unused;
498#if EV_USE_EPOLL 1251#if EV_USE_EPOLL
499 unsigned int egen; /* generation counter to counter epoll bugs */ 1252 unsigned int egen; /* generation counter to counter epoll bugs */
500#endif 1253#endif
501#if EV_SELECT_IS_WINSOCKET 1254#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
502 SOCKET handle; 1255 SOCKET handle;
1256#endif
1257#if EV_USE_IOCP
1258 OVERLAPPED or, ow;
503#endif 1259#endif
504} ANFD; 1260} ANFD;
505 1261
506/* stores the pending event set for a given watcher */ 1262/* stores the pending event set for a given watcher */
507typedef struct 1263typedef struct
… …
549 #undef VAR 1305 #undef VAR
550 }; 1306 };
551 #include "ev_wrap.h" 1307 #include "ev_wrap.h"
552 1308
553 static struct ev_loop default_loop_struct; 1309 static struct ev_loop default_loop_struct;
554 struct ev_loop *ev_default_loop_ptr; 1310 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
555 1311
556#else 1312#else
557 1313
558 ev_tstamp ev_rt_now; 1314 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
559 #define VAR(name,decl) static decl; 1315 #define VAR(name,decl) static decl;
560 #include "ev_vars.h" 1316 #include "ev_vars.h"
561 #undef VAR 1317 #undef VAR
562 1318
563 static int ev_default_loop_ptr; 1319 static int ev_default_loop_ptr;
564 1320
565#endif 1321#endif
566 1322
1323#if EV_FEATURE_API
1324# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
1325# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
1326# define EV_INVOKE_PENDING invoke_cb (EV_A)
1327#else
1328# define EV_RELEASE_CB (void)0
1329# define EV_ACQUIRE_CB (void)0
1330# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
1331#endif
1332
1333#define EVBREAK_RECURSE 0x80
1334
567/*****************************************************************************/ 1335/*****************************************************************************/
568 1336
569#ifndef EV_HAVE_EV_TIME 1337#ifndef EV_HAVE_EV_TIME
570ev_tstamp 1338ev_tstamp
571ev_time (void) 1339ev_time (void) EV_THROW
572{ 1340{
573#if EV_USE_REALTIME 1341#if EV_USE_REALTIME
574 if (expect_true (have_realtime)) 1342 if (expect_true (have_realtime))
575 { 1343 {
576 struct timespec ts; 1344 struct timespec ts;
… …
600 return ev_time (); 1368 return ev_time ();
601} 1369}
602 1370
603#if EV_MULTIPLICITY 1371#if EV_MULTIPLICITY
604ev_tstamp 1372ev_tstamp
605ev_now (EV_P) 1373ev_now (EV_P) EV_THROW
606{ 1374{
607 return ev_rt_now; 1375 return ev_rt_now;
608} 1376}
609#endif 1377#endif
610 1378
611void 1379void
612ev_sleep (ev_tstamp delay) 1380ev_sleep (ev_tstamp delay) EV_THROW
613{ 1381{
614 if (delay > 0.) 1382 if (delay > 0.)
615 { 1383 {
616#if EV_USE_NANOSLEEP 1384#if EV_USE_NANOSLEEP
617 struct timespec ts; 1385 struct timespec ts;
618 1386
619 ts.tv_sec = (time_t)delay; 1387 EV_TS_SET (ts, delay);
620 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
621
622 nanosleep (&ts, 0); 1388 nanosleep (&ts, 0);
623#elif defined(_WIN32) 1389#elif defined _WIN32
624 Sleep ((unsigned long)(delay * 1e3)); 1390 Sleep ((unsigned long)(delay * 1e3));
625#else 1391#else
626 struct timeval tv; 1392 struct timeval tv;
627 1393
628 tv.tv_sec = (time_t)delay;
629 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
630
631 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1394 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
632 /* somehting not guaranteed by newer posix versions, but guaranteed */ 1395 /* something not guaranteed by newer posix versions, but guaranteed */
633 /* by older ones */ 1396 /* by older ones */
1397 EV_TV_SET (tv, delay);
634 select (0, 0, 0, 0, &tv); 1398 select (0, 0, 0, 0, &tv);
635#endif 1399#endif
636 } 1400 }
637} 1401}
638 1402
639/*****************************************************************************/ 1403/*****************************************************************************/
640 1404
641#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1405#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
642 1406
643/* find a suitable new size for the given array, */ 1407/* find a suitable new size for the given array, */
644/* hopefully by rounding to a ncie-to-malloc size */ 1408/* hopefully by rounding to a nice-to-malloc size */
645inline_size int 1409inline_size int
646array_nextsize (int elem, int cur, int cnt) 1410array_nextsize (int elem, int cur, int cnt)
647{ 1411{
648 int ncur = cur + 1; 1412 int ncur = cur + 1;
649 1413
650 do 1414 do
651 ncur <<= 1; 1415 ncur <<= 1;
652 while (cnt > ncur); 1416 while (cnt > ncur);
653 1417
654 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1418 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
655 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1419 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
656 { 1420 {
657 ncur *= elem; 1421 ncur *= elem;
658 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1422 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
659 ncur = ncur - sizeof (void *) * 4; 1423 ncur = ncur - sizeof (void *) * 4;
… …
661 } 1425 }
662 1426
663 return ncur; 1427 return ncur;
664} 1428}
665 1429
666static noinline void * 1430static void * noinline ecb_cold
667array_realloc (int elem, void *base, int *cur, int cnt) 1431array_realloc (int elem, void *base, int *cur, int cnt)
668{ 1432{
669 *cur = array_nextsize (elem, *cur, cnt); 1433 *cur = array_nextsize (elem, *cur, cnt);
670 return ev_realloc (base, elem * *cur); 1434 return ev_realloc (base, elem * *cur);
671} 1435}
… …
674 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1438 memset ((void *)(base), 0, sizeof (*(base)) * (count))
675 1439
676#define array_needsize(type,base,cur,cnt,init) \ 1440#define array_needsize(type,base,cur,cnt,init) \
677 if (expect_false ((cnt) > (cur))) \ 1441 if (expect_false ((cnt) > (cur))) \
678 { \ 1442 { \
679 int ocur_ = (cur); \ 1443 int ecb_unused ocur_ = (cur); \
680 (base) = (type *)array_realloc \ 1444 (base) = (type *)array_realloc \
681 (sizeof (type), (base), &(cur), (cnt)); \ 1445 (sizeof (type), (base), &(cur), (cnt)); \
682 init ((base) + (ocur_), (cur) - ocur_); \ 1446 init ((base) + (ocur_), (cur) - ocur_); \
683 } 1447 }
684 1448
… …
702pendingcb (EV_P_ ev_prepare *w, int revents) 1466pendingcb (EV_P_ ev_prepare *w, int revents)
703{ 1467{
704} 1468}
705 1469
706void noinline 1470void noinline
707ev_feed_event (EV_P_ void *w, int revents) 1471ev_feed_event (EV_P_ void *w, int revents) EV_THROW
708{ 1472{
709 W w_ = (W)w; 1473 W w_ = (W)w;
710 int pri = ABSPRI (w_); 1474 int pri = ABSPRI (w_);
711 1475
712 if (expect_false (w_->pending)) 1476 if (expect_false (w_->pending))
… …
716 w_->pending = ++pendingcnt [pri]; 1480 w_->pending = ++pendingcnt [pri];
717 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1481 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
718 pendings [pri][w_->pending - 1].w = w_; 1482 pendings [pri][w_->pending - 1].w = w_;
719 pendings [pri][w_->pending - 1].events = revents; 1483 pendings [pri][w_->pending - 1].events = revents;
720 } 1484 }
1485
1486 pendingpri = NUMPRI - 1;
721} 1487}
722 1488
723inline_speed void 1489inline_speed void
724feed_reverse (EV_P_ W w) 1490feed_reverse (EV_P_ W w)
725{ 1491{
… …
745} 1511}
746 1512
747/*****************************************************************************/ 1513/*****************************************************************************/
748 1514
749inline_speed void 1515inline_speed void
750fd_event (EV_P_ int fd, int revents) 1516fd_event_nocheck (EV_P_ int fd, int revents)
751{ 1517{
752 ANFD *anfd = anfds + fd; 1518 ANFD *anfd = anfds + fd;
753 ev_io *w; 1519 ev_io *w;
754 1520
755 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1521 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
759 if (ev) 1525 if (ev)
760 ev_feed_event (EV_A_ (W)w, ev); 1526 ev_feed_event (EV_A_ (W)w, ev);
761 } 1527 }
762} 1528}
763 1529
1530/* do not submit kernel events for fds that have reify set */
1531/* because that means they changed while we were polling for new events */
1532inline_speed void
1533fd_event (EV_P_ int fd, int revents)
1534{
1535 ANFD *anfd = anfds + fd;
1536
1537 if (expect_true (!anfd->reify))
1538 fd_event_nocheck (EV_A_ fd, revents);
1539}
1540
764void 1541void
765ev_feed_fd_event (EV_P_ int fd, int revents) 1542ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
766{ 1543{
767 if (fd >= 0 && fd < anfdmax) 1544 if (fd >= 0 && fd < anfdmax)
768 fd_event (EV_A_ fd, revents); 1545 fd_event_nocheck (EV_A_ fd, revents);
769} 1546}
770 1547
771/* make sure the external fd watch events are in-sync */ 1548/* make sure the external fd watch events are in-sync */
772/* with the kernel/libev internal state */ 1549/* with the kernel/libev internal state */
773inline_size void 1550inline_size void
774fd_reify (EV_P) 1551fd_reify (EV_P)
775{ 1552{
776 int i; 1553 int i;
777 1554
1555#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1556 for (i = 0; i < fdchangecnt; ++i)
1557 {
1558 int fd = fdchanges [i];
1559 ANFD *anfd = anfds + fd;
1560
1561 if (anfd->reify & EV__IOFDSET && anfd->head)
1562 {
1563 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1564
1565 if (handle != anfd->handle)
1566 {
1567 unsigned long arg;
1568
1569 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1570
1571 /* handle changed, but fd didn't - we need to do it in two steps */
1572 backend_modify (EV_A_ fd, anfd->events, 0);
1573 anfd->events = 0;
1574 anfd->handle = handle;
1575 }
1576 }
1577 }
1578#endif
1579
778 for (i = 0; i < fdchangecnt; ++i) 1580 for (i = 0; i < fdchangecnt; ++i)
779 { 1581 {
780 int fd = fdchanges [i]; 1582 int fd = fdchanges [i];
781 ANFD *anfd = anfds + fd; 1583 ANFD *anfd = anfds + fd;
782 ev_io *w; 1584 ev_io *w;
783 1585
784 unsigned char events = 0; 1586 unsigned char o_events = anfd->events;
1587 unsigned char o_reify = anfd->reify;
785 1588
786 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1589 anfd->reify = 0;
787 events |= (unsigned char)w->events;
788 1590
789#if EV_SELECT_IS_WINSOCKET 1591 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
790 if (events)
791 { 1592 {
792 unsigned long arg; 1593 anfd->events = 0;
793 #ifdef EV_FD_TO_WIN32_HANDLE 1594
794 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1595 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
795 #else 1596 anfd->events |= (unsigned char)w->events;
796 anfd->handle = _get_osfhandle (fd); 1597
797 #endif 1598 if (o_events != anfd->events)
798 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1599 o_reify = EV__IOFDSET; /* actually |= */
799 } 1600 }
800#endif
801 1601
802 { 1602 if (o_reify & EV__IOFDSET)
803 unsigned char o_events = anfd->events;
804 unsigned char o_reify = anfd->reify;
805
806 anfd->reify = 0;
807 anfd->events = events;
808
809 if (o_events != events || o_reify & EV__IOFDSET)
810 backend_modify (EV_A_ fd, o_events, events); 1603 backend_modify (EV_A_ fd, o_events, anfd->events);
811 }
812 } 1604 }
813 1605
814 fdchangecnt = 0; 1606 fdchangecnt = 0;
815} 1607}
816 1608
… …
828 fdchanges [fdchangecnt - 1] = fd; 1620 fdchanges [fdchangecnt - 1] = fd;
829 } 1621 }
830} 1622}
831 1623
832/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1624/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
833inline_speed void 1625inline_speed void ecb_cold
834fd_kill (EV_P_ int fd) 1626fd_kill (EV_P_ int fd)
835{ 1627{
836 ev_io *w; 1628 ev_io *w;
837 1629
838 while ((w = (ev_io *)anfds [fd].head)) 1630 while ((w = (ev_io *)anfds [fd].head))
… …
840 ev_io_stop (EV_A_ w); 1632 ev_io_stop (EV_A_ w);
841 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1633 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
842 } 1634 }
843} 1635}
844 1636
845/* check whether the given fd is atcually valid, for error recovery */ 1637/* check whether the given fd is actually valid, for error recovery */
846inline_size int 1638inline_size int ecb_cold
847fd_valid (int fd) 1639fd_valid (int fd)
848{ 1640{
849#ifdef _WIN32 1641#ifdef _WIN32
850 return _get_osfhandle (fd) != -1; 1642 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
851#else 1643#else
852 return fcntl (fd, F_GETFD) != -1; 1644 return fcntl (fd, F_GETFD) != -1;
853#endif 1645#endif
854} 1646}
855 1647
856/* called on EBADF to verify fds */ 1648/* called on EBADF to verify fds */
857static void noinline 1649static void noinline ecb_cold
858fd_ebadf (EV_P) 1650fd_ebadf (EV_P)
859{ 1651{
860 int fd; 1652 int fd;
861 1653
862 for (fd = 0; fd < anfdmax; ++fd) 1654 for (fd = 0; fd < anfdmax; ++fd)
… …
864 if (!fd_valid (fd) && errno == EBADF) 1656 if (!fd_valid (fd) && errno == EBADF)
865 fd_kill (EV_A_ fd); 1657 fd_kill (EV_A_ fd);
866} 1658}
867 1659
868/* called on ENOMEM in select/poll to kill some fds and retry */ 1660/* called on ENOMEM in select/poll to kill some fds and retry */
869static void noinline 1661static void noinline ecb_cold
870fd_enomem (EV_P) 1662fd_enomem (EV_P)
871{ 1663{
872 int fd; 1664 int fd;
873 1665
874 for (fd = anfdmax; fd--; ) 1666 for (fd = anfdmax; fd--; )
875 if (anfds [fd].events) 1667 if (anfds [fd].events)
876 { 1668 {
877 fd_kill (EV_A_ fd); 1669 fd_kill (EV_A_ fd);
878 return; 1670 break;
879 } 1671 }
880} 1672}
881 1673
882/* usually called after fork if backend needs to re-arm all fds from scratch */ 1674/* usually called after fork if backend needs to re-arm all fds from scratch */
883static void noinline 1675static void noinline
… …
888 for (fd = 0; fd < anfdmax; ++fd) 1680 for (fd = 0; fd < anfdmax; ++fd)
889 if (anfds [fd].events) 1681 if (anfds [fd].events)
890 { 1682 {
891 anfds [fd].events = 0; 1683 anfds [fd].events = 0;
892 anfds [fd].emask = 0; 1684 anfds [fd].emask = 0;
893 fd_change (EV_A_ fd, EV__IOFDSET | 1); 1685 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
894 } 1686 }
895} 1687}
896 1688
1689/* used to prepare libev internal fd's */
1690/* this is not fork-safe */
1691inline_speed void
1692fd_intern (int fd)
1693{
1694#ifdef _WIN32
1695 unsigned long arg = 1;
1696 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1697#else
1698 fcntl (fd, F_SETFD, FD_CLOEXEC);
1699 fcntl (fd, F_SETFL, O_NONBLOCK);
1700#endif
1701}
1702
897/*****************************************************************************/ 1703/*****************************************************************************/
898 1704
899/* 1705/*
900 * the heap functions want a real array index. array index 0 uis guaranteed to not 1706 * the heap functions want a real array index. array index 0 is guaranteed to not
901 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1707 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
902 * the branching factor of the d-tree. 1708 * the branching factor of the d-tree.
903 */ 1709 */
904 1710
905/* 1711/*
… …
973 1779
974 for (;;) 1780 for (;;)
975 { 1781 {
976 int c = k << 1; 1782 int c = k << 1;
977 1783
978 if (c > N + HEAP0 - 1) 1784 if (c >= N + HEAP0)
979 break; 1785 break;
980 1786
981 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1787 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
982 ? 1 : 0; 1788 ? 1 : 0;
983 1789
… …
1019 1825
1020/* move an element suitably so it is in a correct place */ 1826/* move an element suitably so it is in a correct place */
1021inline_size void 1827inline_size void
1022adjustheap (ANHE *heap, int N, int k) 1828adjustheap (ANHE *heap, int N, int k)
1023{ 1829{
1024 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1830 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1025 upheap (heap, k); 1831 upheap (heap, k);
1026 else 1832 else
1027 downheap (heap, N, k); 1833 downheap (heap, N, k);
1028} 1834}
1029 1835
… …
1042/*****************************************************************************/ 1848/*****************************************************************************/
1043 1849
1044/* associate signal watchers to a signal signal */ 1850/* associate signal watchers to a signal signal */
1045typedef struct 1851typedef struct
1046{ 1852{
1853 EV_ATOMIC_T pending;
1854#if EV_MULTIPLICITY
1855 EV_P;
1856#endif
1047 WL head; 1857 WL head;
1048 EV_ATOMIC_T gotsig;
1049} ANSIG; 1858} ANSIG;
1050 1859
1051static ANSIG *signals; 1860static ANSIG signals [EV_NSIG - 1];
1052static int signalmax;
1053
1054static EV_ATOMIC_T gotsig;
1055 1861
1056/*****************************************************************************/ 1862/*****************************************************************************/
1057 1863
1058/* used to prepare libev internal fd's */ 1864#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1059/* this is not fork-safe */
1060inline_speed void
1061fd_intern (int fd)
1062{
1063#ifdef _WIN32
1064 unsigned long arg = 1;
1065 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1066#else
1067 fcntl (fd, F_SETFD, FD_CLOEXEC);
1068 fcntl (fd, F_SETFL, O_NONBLOCK);
1069#endif
1070}
1071 1865
1072static void noinline 1866static void noinline ecb_cold
1073evpipe_init (EV_P) 1867evpipe_init (EV_P)
1074{ 1868{
1075 if (!ev_is_active (&pipe_w)) 1869 if (!ev_is_active (&pipe_w))
1076 { 1870 {
1077#if EV_USE_EVENTFD 1871# if EV_USE_EVENTFD
1872 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1873 if (evfd < 0 && errno == EINVAL)
1078 if ((evfd = eventfd (0, 0)) >= 0) 1874 evfd = eventfd (0, 0);
1875
1876 if (evfd >= 0)
1079 { 1877 {
1080 evpipe [0] = -1; 1878 evpipe [0] = -1;
1081 fd_intern (evfd); 1879 fd_intern (evfd); /* doing it twice doesn't hurt */
1082 ev_io_set (&pipe_w, evfd, EV_READ); 1880 ev_io_set (&pipe_w, evfd, EV_READ);
1083 } 1881 }
1084 else 1882 else
1085#endif 1883# endif
1086 { 1884 {
1087 while (pipe (evpipe)) 1885 while (pipe (evpipe))
1088 ev_syserr ("(libev) error creating signal/async pipe"); 1886 ev_syserr ("(libev) error creating signal/async pipe");
1089 1887
1090 fd_intern (evpipe [0]); 1888 fd_intern (evpipe [0]);
… …
1095 ev_io_start (EV_A_ &pipe_w); 1893 ev_io_start (EV_A_ &pipe_w);
1096 ev_unref (EV_A); /* watcher should not keep loop alive */ 1894 ev_unref (EV_A); /* watcher should not keep loop alive */
1097 } 1895 }
1098} 1896}
1099 1897
1100inline_size void 1898inline_speed void
1101evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1899evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1102{ 1900{
1103 if (!*flag) 1901 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1902
1903 if (expect_true (*flag))
1904 return;
1905
1906 *flag = 1;
1907 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1908
1909 pipe_write_skipped = 1;
1910
1911 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1912
1913 if (pipe_write_wanted)
1104 { 1914 {
1915 int old_errno;
1916
1917 pipe_write_skipped = 0;
1918 ECB_MEMORY_FENCE_RELEASE;
1919
1105 int old_errno = errno; /* save errno because write might clobber it */ 1920 old_errno = errno; /* save errno because write will clobber it */
1106
1107 *flag = 1;
1108 1921
1109#if EV_USE_EVENTFD 1922#if EV_USE_EVENTFD
1110 if (evfd >= 0) 1923 if (evfd >= 0)
1111 { 1924 {
1112 uint64_t counter = 1; 1925 uint64_t counter = 1;
1113 write (evfd, &counter, sizeof (uint64_t)); 1926 write (evfd, &counter, sizeof (uint64_t));
1114 } 1927 }
1115 else 1928 else
1116#endif 1929#endif
1930 {
1931#ifdef _WIN32
1932 WSABUF buf;
1933 DWORD sent;
1934 buf.buf = &buf;
1935 buf.len = 1;
1936 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1937#else
1117 write (evpipe [1], &old_errno, 1); 1938 write (evpipe [1], &(evpipe [1]), 1);
1939#endif
1940 }
1118 1941
1119 errno = old_errno; 1942 errno = old_errno;
1120 } 1943 }
1121} 1944}
1122 1945
1123/* called whenever the libev signal pipe */ 1946/* called whenever the libev signal pipe */
1124/* got some events (signal, async) */ 1947/* got some events (signal, async) */
1125static void 1948static void
1126pipecb (EV_P_ ev_io *iow, int revents) 1949pipecb (EV_P_ ev_io *iow, int revents)
1127{ 1950{
1951 int i;
1952
1953 if (revents & EV_READ)
1954 {
1128#if EV_USE_EVENTFD 1955#if EV_USE_EVENTFD
1129 if (evfd >= 0) 1956 if (evfd >= 0)
1130 { 1957 {
1131 uint64_t counter; 1958 uint64_t counter;
1132 read (evfd, &counter, sizeof (uint64_t)); 1959 read (evfd, &counter, sizeof (uint64_t));
1133 } 1960 }
1134 else 1961 else
1135#endif 1962#endif
1136 { 1963 {
1137 char dummy; 1964 char dummy[4];
1965#ifdef _WIN32
1966 WSABUF buf;
1967 DWORD recvd;
1968 DWORD flags = 0;
1969 buf.buf = dummy;
1970 buf.len = sizeof (dummy);
1971 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
1972#else
1138 read (evpipe [0], &dummy, 1); 1973 read (evpipe [0], &dummy, sizeof (dummy));
1974#endif
1975 }
1976 }
1977
1978 pipe_write_skipped = 0;
1979
1980 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1981
1982#if EV_SIGNAL_ENABLE
1983 if (sig_pending)
1139 } 1984 {
1985 sig_pending = 0;
1140 1986
1141 if (gotsig && ev_is_default_loop (EV_A)) 1987 ECB_MEMORY_FENCE;
1142 {
1143 int signum;
1144 gotsig = 0;
1145 1988
1146 for (signum = signalmax; signum--; ) 1989 for (i = EV_NSIG - 1; i--; )
1147 if (signals [signum].gotsig) 1990 if (expect_false (signals [i].pending))
1148 ev_feed_signal_event (EV_A_ signum + 1); 1991 ev_feed_signal_event (EV_A_ i + 1);
1149 } 1992 }
1993#endif
1150 1994
1151#if EV_ASYNC_ENABLE 1995#if EV_ASYNC_ENABLE
1152 if (gotasync) 1996 if (async_pending)
1153 { 1997 {
1154 int i; 1998 async_pending = 0;
1155 gotasync = 0; 1999
2000 ECB_MEMORY_FENCE;
1156 2001
1157 for (i = asynccnt; i--; ) 2002 for (i = asynccnt; i--; )
1158 if (asyncs [i]->sent) 2003 if (asyncs [i]->sent)
1159 { 2004 {
1160 asyncs [i]->sent = 0; 2005 asyncs [i]->sent = 0;
2006 ECB_MEMORY_FENCE_RELEASE;
1161 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2007 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1162 } 2008 }
1163 } 2009 }
1164#endif 2010#endif
1165} 2011}
1166 2012
1167/*****************************************************************************/ 2013/*****************************************************************************/
1168 2014
2015void
2016ev_feed_signal (int signum) EV_THROW
2017{
2018#if EV_MULTIPLICITY
2019 EV_P = signals [signum - 1].loop;
2020
2021 if (!EV_A)
2022 return;
2023#endif
2024
2025 if (!ev_active (&pipe_w))
2026 return;
2027
2028 signals [signum - 1].pending = 1;
2029 evpipe_write (EV_A_ &sig_pending);
2030}
2031
1169static void 2032static void
1170ev_sighandler (int signum) 2033ev_sighandler (int signum)
1171{ 2034{
2035#ifdef _WIN32
2036 signal (signum, ev_sighandler);
2037#endif
2038
2039 ev_feed_signal (signum);
2040}
2041
2042void noinline
2043ev_feed_signal_event (EV_P_ int signum) EV_THROW
2044{
2045 WL w;
2046
2047 if (expect_false (signum <= 0 || signum > EV_NSIG))
2048 return;
2049
2050 --signum;
2051
1172#if EV_MULTIPLICITY 2052#if EV_MULTIPLICITY
1173 struct ev_loop *loop = &default_loop_struct; 2053 /* it is permissible to try to feed a signal to the wrong loop */
1174#endif 2054 /* or, likely more useful, feeding a signal nobody is waiting for */
1175 2055
1176#if _WIN32 2056 if (expect_false (signals [signum].loop != EV_A))
1177 signal (signum, ev_sighandler);
1178#endif
1179
1180 signals [signum - 1].gotsig = 1;
1181 evpipe_write (EV_A_ &gotsig);
1182}
1183
1184void noinline
1185ev_feed_signal_event (EV_P_ int signum)
1186{
1187 WL w;
1188
1189#if EV_MULTIPLICITY
1190 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1191#endif
1192
1193 --signum;
1194
1195 if (signum < 0 || signum >= signalmax)
1196 return; 2057 return;
2058#endif
1197 2059
1198 signals [signum].gotsig = 0; 2060 signals [signum].pending = 0;
2061 ECB_MEMORY_FENCE_RELEASE;
1199 2062
1200 for (w = signals [signum].head; w; w = w->next) 2063 for (w = signals [signum].head; w; w = w->next)
1201 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2064 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1202} 2065}
1203 2066
2067#if EV_USE_SIGNALFD
2068static void
2069sigfdcb (EV_P_ ev_io *iow, int revents)
2070{
2071 struct signalfd_siginfo si[2], *sip; /* these structs are big */
2072
2073 for (;;)
2074 {
2075 ssize_t res = read (sigfd, si, sizeof (si));
2076
2077 /* not ISO-C, as res might be -1, but works with SuS */
2078 for (sip = si; (char *)sip < (char *)si + res; ++sip)
2079 ev_feed_signal_event (EV_A_ sip->ssi_signo);
2080
2081 if (res < (ssize_t)sizeof (si))
2082 break;
2083 }
2084}
2085#endif
2086
2087#endif
2088
1204/*****************************************************************************/ 2089/*****************************************************************************/
1205 2090
2091#if EV_CHILD_ENABLE
1206static WL childs [EV_PID_HASHSIZE]; 2092static WL childs [EV_PID_HASHSIZE];
1207
1208#ifndef _WIN32
1209 2093
1210static ev_signal childev; 2094static ev_signal childev;
1211 2095
1212#ifndef WIFCONTINUED 2096#ifndef WIFCONTINUED
1213# define WIFCONTINUED(status) 0 2097# define WIFCONTINUED(status) 0
… …
1218child_reap (EV_P_ int chain, int pid, int status) 2102child_reap (EV_P_ int chain, int pid, int status)
1219{ 2103{
1220 ev_child *w; 2104 ev_child *w;
1221 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2105 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1222 2106
1223 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2107 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1224 { 2108 {
1225 if ((w->pid == pid || !w->pid) 2109 if ((w->pid == pid || !w->pid)
1226 && (!traced || (w->flags & 1))) 2110 && (!traced || (w->flags & 1)))
1227 { 2111 {
1228 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2112 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1253 /* make sure we are called again until all children have been reaped */ 2137 /* make sure we are called again until all children have been reaped */
1254 /* we need to do it this way so that the callback gets called before we continue */ 2138 /* we need to do it this way so that the callback gets called before we continue */
1255 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2139 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1256 2140
1257 child_reap (EV_A_ pid, pid, status); 2141 child_reap (EV_A_ pid, pid, status);
1258 if (EV_PID_HASHSIZE > 1) 2142 if ((EV_PID_HASHSIZE) > 1)
1259 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2143 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1260} 2144}
1261 2145
1262#endif 2146#endif
1263 2147
1264/*****************************************************************************/ 2148/*****************************************************************************/
1265 2149
2150#if EV_USE_IOCP
2151# include "ev_iocp.c"
2152#endif
1266#if EV_USE_PORT 2153#if EV_USE_PORT
1267# include "ev_port.c" 2154# include "ev_port.c"
1268#endif 2155#endif
1269#if EV_USE_KQUEUE 2156#if EV_USE_KQUEUE
1270# include "ev_kqueue.c" 2157# include "ev_kqueue.c"
… …
1277#endif 2164#endif
1278#if EV_USE_SELECT 2165#if EV_USE_SELECT
1279# include "ev_select.c" 2166# include "ev_select.c"
1280#endif 2167#endif
1281 2168
1282int 2169int ecb_cold
1283ev_version_major (void) 2170ev_version_major (void) EV_THROW
1284{ 2171{
1285 return EV_VERSION_MAJOR; 2172 return EV_VERSION_MAJOR;
1286} 2173}
1287 2174
1288int 2175int ecb_cold
1289ev_version_minor (void) 2176ev_version_minor (void) EV_THROW
1290{ 2177{
1291 return EV_VERSION_MINOR; 2178 return EV_VERSION_MINOR;
1292} 2179}
1293 2180
1294/* return true if we are running with elevated privileges and should ignore env variables */ 2181/* return true if we are running with elevated privileges and should ignore env variables */
1295int inline_size 2182int inline_size ecb_cold
1296enable_secure (void) 2183enable_secure (void)
1297{ 2184{
1298#ifdef _WIN32 2185#ifdef _WIN32
1299 return 0; 2186 return 0;
1300#else 2187#else
1301 return getuid () != geteuid () 2188 return getuid () != geteuid ()
1302 || getgid () != getegid (); 2189 || getgid () != getegid ();
1303#endif 2190#endif
1304} 2191}
1305 2192
1306unsigned int 2193unsigned int ecb_cold
1307ev_supported_backends (void) 2194ev_supported_backends (void) EV_THROW
1308{ 2195{
1309 unsigned int flags = 0; 2196 unsigned int flags = 0;
1310 2197
1311 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2198 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1312 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2199 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1315 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2202 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1316 2203
1317 return flags; 2204 return flags;
1318} 2205}
1319 2206
1320unsigned int 2207unsigned int ecb_cold
1321ev_recommended_backends (void) 2208ev_recommended_backends (void) EV_THROW
1322{ 2209{
1323 unsigned int flags = ev_supported_backends (); 2210 unsigned int flags = ev_supported_backends ();
1324 2211
1325#ifndef __NetBSD__ 2212#ifndef __NetBSD__
1326 /* kqueue is borked on everything but netbsd apparently */ 2213 /* kqueue is borked on everything but netbsd apparently */
… …
1330#ifdef __APPLE__ 2217#ifdef __APPLE__
1331 /* only select works correctly on that "unix-certified" platform */ 2218 /* only select works correctly on that "unix-certified" platform */
1332 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2219 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1333 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2220 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1334#endif 2221#endif
2222#ifdef __FreeBSD__
2223 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2224#endif
1335 2225
1336 return flags; 2226 return flags;
1337} 2227}
1338 2228
2229unsigned int ecb_cold
2230ev_embeddable_backends (void) EV_THROW
2231{
2232 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2233
2234 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2235 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2236 flags &= ~EVBACKEND_EPOLL;
2237
2238 return flags;
2239}
2240
1339unsigned int 2241unsigned int
1340ev_embeddable_backends (void) 2242ev_backend (EV_P) EV_THROW
1341{ 2243{
1342 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2244 return backend;
1343
1344 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1345 /* please fix it and tell me how to detect the fix */
1346 flags &= ~EVBACKEND_EPOLL;
1347
1348 return flags;
1349} 2245}
1350 2246
2247#if EV_FEATURE_API
1351unsigned int 2248unsigned int
1352ev_backend (EV_P) 2249ev_iteration (EV_P) EV_THROW
1353{ 2250{
1354 return backend; 2251 return loop_count;
1355} 2252}
1356 2253
1357unsigned int 2254unsigned int
1358ev_loop_count (EV_P) 2255ev_depth (EV_P) EV_THROW
1359{ 2256{
1360 return loop_count; 2257 return loop_depth;
1361} 2258}
1362 2259
1363void 2260void
1364ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2261ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1365{ 2262{
1366 io_blocktime = interval; 2263 io_blocktime = interval;
1367} 2264}
1368 2265
1369void 2266void
1370ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2267ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1371{ 2268{
1372 timeout_blocktime = interval; 2269 timeout_blocktime = interval;
1373} 2270}
1374 2271
2272void
2273ev_set_userdata (EV_P_ void *data) EV_THROW
2274{
2275 userdata = data;
2276}
2277
2278void *
2279ev_userdata (EV_P) EV_THROW
2280{
2281 return userdata;
2282}
2283
2284void
2285ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
2286{
2287 invoke_cb = invoke_pending_cb;
2288}
2289
2290void
2291ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
2292{
2293 release_cb = release;
2294 acquire_cb = acquire;
2295}
2296#endif
2297
1375/* initialise a loop structure, must be zero-initialised */ 2298/* initialise a loop structure, must be zero-initialised */
1376static void noinline 2299static void noinline ecb_cold
1377loop_init (EV_P_ unsigned int flags) 2300loop_init (EV_P_ unsigned int flags) EV_THROW
1378{ 2301{
1379 if (!backend) 2302 if (!backend)
1380 { 2303 {
2304 origflags = flags;
2305
1381#if EV_USE_REALTIME 2306#if EV_USE_REALTIME
1382 if (!have_realtime) 2307 if (!have_realtime)
1383 { 2308 {
1384 struct timespec ts; 2309 struct timespec ts;
1385 2310
… …
1396 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2321 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1397 have_monotonic = 1; 2322 have_monotonic = 1;
1398 } 2323 }
1399#endif 2324#endif
1400 2325
1401 ev_rt_now = ev_time ();
1402 mn_now = get_clock ();
1403 now_floor = mn_now;
1404 rtmn_diff = ev_rt_now - mn_now;
1405
1406 io_blocktime = 0.;
1407 timeout_blocktime = 0.;
1408 backend = 0;
1409 backend_fd = -1;
1410 gotasync = 0;
1411#if EV_USE_INOTIFY
1412 fs_fd = -2;
1413#endif
1414
1415 /* pid check not overridable via env */ 2326 /* pid check not overridable via env */
1416#ifndef _WIN32 2327#ifndef _WIN32
1417 if (flags & EVFLAG_FORKCHECK) 2328 if (flags & EVFLAG_FORKCHECK)
1418 curpid = getpid (); 2329 curpid = getpid ();
1419#endif 2330#endif
… …
1421 if (!(flags & EVFLAG_NOENV) 2332 if (!(flags & EVFLAG_NOENV)
1422 && !enable_secure () 2333 && !enable_secure ()
1423 && getenv ("LIBEV_FLAGS")) 2334 && getenv ("LIBEV_FLAGS"))
1424 flags = atoi (getenv ("LIBEV_FLAGS")); 2335 flags = atoi (getenv ("LIBEV_FLAGS"));
1425 2336
1426 if (!(flags & 0x0000ffffU)) 2337 ev_rt_now = ev_time ();
2338 mn_now = get_clock ();
2339 now_floor = mn_now;
2340 rtmn_diff = ev_rt_now - mn_now;
2341#if EV_FEATURE_API
2342 invoke_cb = ev_invoke_pending;
2343#endif
2344
2345 io_blocktime = 0.;
2346 timeout_blocktime = 0.;
2347 backend = 0;
2348 backend_fd = -1;
2349 sig_pending = 0;
2350#if EV_ASYNC_ENABLE
2351 async_pending = 0;
2352#endif
2353 pipe_write_skipped = 0;
2354 pipe_write_wanted = 0;
2355#if EV_USE_INOTIFY
2356 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2357#endif
2358#if EV_USE_SIGNALFD
2359 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2360#endif
2361
2362 if (!(flags & EVBACKEND_MASK))
1427 flags |= ev_recommended_backends (); 2363 flags |= ev_recommended_backends ();
1428 2364
2365#if EV_USE_IOCP
2366 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2367#endif
1429#if EV_USE_PORT 2368#if EV_USE_PORT
1430 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2369 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1431#endif 2370#endif
1432#if EV_USE_KQUEUE 2371#if EV_USE_KQUEUE
1433 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2372 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1442 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2381 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1443#endif 2382#endif
1444 2383
1445 ev_prepare_init (&pending_w, pendingcb); 2384 ev_prepare_init (&pending_w, pendingcb);
1446 2385
2386#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1447 ev_init (&pipe_w, pipecb); 2387 ev_init (&pipe_w, pipecb);
1448 ev_set_priority (&pipe_w, EV_MAXPRI); 2388 ev_set_priority (&pipe_w, EV_MAXPRI);
2389#endif
1449 } 2390 }
1450} 2391}
1451 2392
1452/* free up a loop structure */ 2393/* free up a loop structure */
1453static void noinline 2394void ecb_cold
1454loop_destroy (EV_P) 2395ev_loop_destroy (EV_P)
1455{ 2396{
1456 int i; 2397 int i;
1457 2398
2399#if EV_MULTIPLICITY
2400 /* mimic free (0) */
2401 if (!EV_A)
2402 return;
2403#endif
2404
2405#if EV_CLEANUP_ENABLE
2406 /* queue cleanup watchers (and execute them) */
2407 if (expect_false (cleanupcnt))
2408 {
2409 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2410 EV_INVOKE_PENDING;
2411 }
2412#endif
2413
2414#if EV_CHILD_ENABLE
2415 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2416 {
2417 ev_ref (EV_A); /* child watcher */
2418 ev_signal_stop (EV_A_ &childev);
2419 }
2420#endif
2421
1458 if (ev_is_active (&pipe_w)) 2422 if (ev_is_active (&pipe_w))
1459 { 2423 {
1460 ev_ref (EV_A); /* signal watcher */ 2424 /*ev_ref (EV_A);*/
1461 ev_io_stop (EV_A_ &pipe_w); 2425 /*ev_io_stop (EV_A_ &pipe_w);*/
1462 2426
1463#if EV_USE_EVENTFD 2427#if EV_USE_EVENTFD
1464 if (evfd >= 0) 2428 if (evfd >= 0)
1465 close (evfd); 2429 close (evfd);
1466#endif 2430#endif
1467 2431
1468 if (evpipe [0] >= 0) 2432 if (evpipe [0] >= 0)
1469 { 2433 {
1470 close (evpipe [0]); 2434 EV_WIN32_CLOSE_FD (evpipe [0]);
1471 close (evpipe [1]); 2435 EV_WIN32_CLOSE_FD (evpipe [1]);
1472 } 2436 }
1473 } 2437 }
2438
2439#if EV_USE_SIGNALFD
2440 if (ev_is_active (&sigfd_w))
2441 close (sigfd);
2442#endif
1474 2443
1475#if EV_USE_INOTIFY 2444#if EV_USE_INOTIFY
1476 if (fs_fd >= 0) 2445 if (fs_fd >= 0)
1477 close (fs_fd); 2446 close (fs_fd);
1478#endif 2447#endif
1479 2448
1480 if (backend_fd >= 0) 2449 if (backend_fd >= 0)
1481 close (backend_fd); 2450 close (backend_fd);
1482 2451
2452#if EV_USE_IOCP
2453 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2454#endif
1483#if EV_USE_PORT 2455#if EV_USE_PORT
1484 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2456 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1485#endif 2457#endif
1486#if EV_USE_KQUEUE 2458#if EV_USE_KQUEUE
1487 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2459 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1502#if EV_IDLE_ENABLE 2474#if EV_IDLE_ENABLE
1503 array_free (idle, [i]); 2475 array_free (idle, [i]);
1504#endif 2476#endif
1505 } 2477 }
1506 2478
1507 ev_free (anfds); anfdmax = 0; 2479 ev_free (anfds); anfds = 0; anfdmax = 0;
1508 2480
1509 /* have to use the microsoft-never-gets-it-right macro */ 2481 /* have to use the microsoft-never-gets-it-right macro */
1510 array_free (rfeed, EMPTY); 2482 array_free (rfeed, EMPTY);
1511 array_free (fdchange, EMPTY); 2483 array_free (fdchange, EMPTY);
1512 array_free (timer, EMPTY); 2484 array_free (timer, EMPTY);
… …
1514 array_free (periodic, EMPTY); 2486 array_free (periodic, EMPTY);
1515#endif 2487#endif
1516#if EV_FORK_ENABLE 2488#if EV_FORK_ENABLE
1517 array_free (fork, EMPTY); 2489 array_free (fork, EMPTY);
1518#endif 2490#endif
2491#if EV_CLEANUP_ENABLE
2492 array_free (cleanup, EMPTY);
2493#endif
1519 array_free (prepare, EMPTY); 2494 array_free (prepare, EMPTY);
1520 array_free (check, EMPTY); 2495 array_free (check, EMPTY);
1521#if EV_ASYNC_ENABLE 2496#if EV_ASYNC_ENABLE
1522 array_free (async, EMPTY); 2497 array_free (async, EMPTY);
1523#endif 2498#endif
1524 2499
1525 backend = 0; 2500 backend = 0;
2501
2502#if EV_MULTIPLICITY
2503 if (ev_is_default_loop (EV_A))
2504#endif
2505 ev_default_loop_ptr = 0;
2506#if EV_MULTIPLICITY
2507 else
2508 ev_free (EV_A);
2509#endif
1526} 2510}
1527 2511
1528#if EV_USE_INOTIFY 2512#if EV_USE_INOTIFY
1529inline_size void infy_fork (EV_P); 2513inline_size void infy_fork (EV_P);
1530#endif 2514#endif
… …
1545 infy_fork (EV_A); 2529 infy_fork (EV_A);
1546#endif 2530#endif
1547 2531
1548 if (ev_is_active (&pipe_w)) 2532 if (ev_is_active (&pipe_w))
1549 { 2533 {
1550 /* this "locks" the handlers against writing to the pipe */ 2534 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1551 /* while we modify the fd vars */
1552 gotsig = 1;
1553#if EV_ASYNC_ENABLE
1554 gotasync = 1;
1555#endif
1556 2535
1557 ev_ref (EV_A); 2536 ev_ref (EV_A);
1558 ev_io_stop (EV_A_ &pipe_w); 2537 ev_io_stop (EV_A_ &pipe_w);
1559 2538
1560#if EV_USE_EVENTFD 2539#if EV_USE_EVENTFD
… …
1562 close (evfd); 2541 close (evfd);
1563#endif 2542#endif
1564 2543
1565 if (evpipe [0] >= 0) 2544 if (evpipe [0] >= 0)
1566 { 2545 {
1567 close (evpipe [0]); 2546 EV_WIN32_CLOSE_FD (evpipe [0]);
1568 close (evpipe [1]); 2547 EV_WIN32_CLOSE_FD (evpipe [1]);
1569 } 2548 }
1570 2549
2550#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1571 evpipe_init (EV_A); 2551 evpipe_init (EV_A);
1572 /* now iterate over everything, in case we missed something */ 2552 /* now iterate over everything, in case we missed something */
1573 pipecb (EV_A_ &pipe_w, EV_READ); 2553 pipecb (EV_A_ &pipe_w, EV_READ);
2554#endif
1574 } 2555 }
1575 2556
1576 postfork = 0; 2557 postfork = 0;
1577} 2558}
1578 2559
1579#if EV_MULTIPLICITY 2560#if EV_MULTIPLICITY
1580 2561
1581struct ev_loop * 2562struct ev_loop * ecb_cold
1582ev_loop_new (unsigned int flags) 2563ev_loop_new (unsigned int flags) EV_THROW
1583{ 2564{
1584 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2565 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1585 2566
1586 memset (loop, 0, sizeof (struct ev_loop)); 2567 memset (EV_A, 0, sizeof (struct ev_loop));
1587
1588 loop_init (EV_A_ flags); 2568 loop_init (EV_A_ flags);
1589 2569
1590 if (ev_backend (EV_A)) 2570 if (ev_backend (EV_A))
1591 return loop; 2571 return EV_A;
1592 2572
2573 ev_free (EV_A);
1593 return 0; 2574 return 0;
1594} 2575}
1595 2576
1596void 2577#endif /* multiplicity */
1597ev_loop_destroy (EV_P)
1598{
1599 loop_destroy (EV_A);
1600 ev_free (loop);
1601}
1602
1603void
1604ev_loop_fork (EV_P)
1605{
1606 postfork = 1; /* must be in line with ev_default_fork */
1607}
1608 2578
1609#if EV_VERIFY 2579#if EV_VERIFY
1610static void noinline 2580static void noinline ecb_cold
1611verify_watcher (EV_P_ W w) 2581verify_watcher (EV_P_ W w)
1612{ 2582{
1613 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2583 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1614 2584
1615 if (w->pending) 2585 if (w->pending)
1616 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2586 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1617} 2587}
1618 2588
1619static void noinline 2589static void noinline ecb_cold
1620verify_heap (EV_P_ ANHE *heap, int N) 2590verify_heap (EV_P_ ANHE *heap, int N)
1621{ 2591{
1622 int i; 2592 int i;
1623 2593
1624 for (i = HEAP0; i < N + HEAP0; ++i) 2594 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1629 2599
1630 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2600 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1631 } 2601 }
1632} 2602}
1633 2603
1634static void noinline 2604static void noinline ecb_cold
1635array_verify (EV_P_ W *ws, int cnt) 2605array_verify (EV_P_ W *ws, int cnt)
1636{ 2606{
1637 while (cnt--) 2607 while (cnt--)
1638 { 2608 {
1639 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2609 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1640 verify_watcher (EV_A_ ws [cnt]); 2610 verify_watcher (EV_A_ ws [cnt]);
1641 } 2611 }
1642} 2612}
1643#endif 2613#endif
1644 2614
1645void 2615#if EV_FEATURE_API
1646ev_loop_verify (EV_P) 2616void ecb_cold
2617ev_verify (EV_P) EV_THROW
1647{ 2618{
1648#if EV_VERIFY 2619#if EV_VERIFY
1649 int i; 2620 int i;
1650 WL w; 2621 WL w, w2;
1651 2622
1652 assert (activecnt >= -1); 2623 assert (activecnt >= -1);
1653 2624
1654 assert (fdchangemax >= fdchangecnt); 2625 assert (fdchangemax >= fdchangecnt);
1655 for (i = 0; i < fdchangecnt; ++i) 2626 for (i = 0; i < fdchangecnt; ++i)
1656 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2627 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1657 2628
1658 assert (anfdmax >= 0); 2629 assert (anfdmax >= 0);
1659 for (i = 0; i < anfdmax; ++i) 2630 for (i = 0; i < anfdmax; ++i)
2631 {
2632 int j = 0;
2633
1660 for (w = anfds [i].head; w; w = w->next) 2634 for (w = w2 = anfds [i].head; w; w = w->next)
1661 { 2635 {
1662 verify_watcher (EV_A_ (W)w); 2636 verify_watcher (EV_A_ (W)w);
2637
2638 if (j++ & 1)
2639 {
2640 assert (("libev: io watcher list contains a loop", w != w2));
2641 w2 = w2->next;
2642 }
2643
1663 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2644 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1664 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2645 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1665 } 2646 }
2647 }
1666 2648
1667 assert (timermax >= timercnt); 2649 assert (timermax >= timercnt);
1668 verify_heap (EV_A_ timers, timercnt); 2650 verify_heap (EV_A_ timers, timercnt);
1669 2651
1670#if EV_PERIODIC_ENABLE 2652#if EV_PERIODIC_ENABLE
… …
1685#if EV_FORK_ENABLE 2667#if EV_FORK_ENABLE
1686 assert (forkmax >= forkcnt); 2668 assert (forkmax >= forkcnt);
1687 array_verify (EV_A_ (W *)forks, forkcnt); 2669 array_verify (EV_A_ (W *)forks, forkcnt);
1688#endif 2670#endif
1689 2671
2672#if EV_CLEANUP_ENABLE
2673 assert (cleanupmax >= cleanupcnt);
2674 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2675#endif
2676
1690#if EV_ASYNC_ENABLE 2677#if EV_ASYNC_ENABLE
1691 assert (asyncmax >= asynccnt); 2678 assert (asyncmax >= asynccnt);
1692 array_verify (EV_A_ (W *)asyncs, asynccnt); 2679 array_verify (EV_A_ (W *)asyncs, asynccnt);
1693#endif 2680#endif
1694 2681
2682#if EV_PREPARE_ENABLE
1695 assert (preparemax >= preparecnt); 2683 assert (preparemax >= preparecnt);
1696 array_verify (EV_A_ (W *)prepares, preparecnt); 2684 array_verify (EV_A_ (W *)prepares, preparecnt);
2685#endif
1697 2686
2687#if EV_CHECK_ENABLE
1698 assert (checkmax >= checkcnt); 2688 assert (checkmax >= checkcnt);
1699 array_verify (EV_A_ (W *)checks, checkcnt); 2689 array_verify (EV_A_ (W *)checks, checkcnt);
2690#endif
1700 2691
1701# if 0 2692# if 0
2693#if EV_CHILD_ENABLE
1702 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2694 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1703 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2695 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2696#endif
1704# endif 2697# endif
1705#endif 2698#endif
1706} 2699}
1707 2700#endif
1708#endif /* multiplicity */
1709 2701
1710#if EV_MULTIPLICITY 2702#if EV_MULTIPLICITY
1711struct ev_loop * 2703struct ev_loop * ecb_cold
1712ev_default_loop_init (unsigned int flags)
1713#else 2704#else
1714int 2705int
2706#endif
1715ev_default_loop (unsigned int flags) 2707ev_default_loop (unsigned int flags) EV_THROW
1716#endif
1717{ 2708{
1718 if (!ev_default_loop_ptr) 2709 if (!ev_default_loop_ptr)
1719 { 2710 {
1720#if EV_MULTIPLICITY 2711#if EV_MULTIPLICITY
1721 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2712 EV_P = ev_default_loop_ptr = &default_loop_struct;
1722#else 2713#else
1723 ev_default_loop_ptr = 1; 2714 ev_default_loop_ptr = 1;
1724#endif 2715#endif
1725 2716
1726 loop_init (EV_A_ flags); 2717 loop_init (EV_A_ flags);
1727 2718
1728 if (ev_backend (EV_A)) 2719 if (ev_backend (EV_A))
1729 { 2720 {
1730#ifndef _WIN32 2721#if EV_CHILD_ENABLE
1731 ev_signal_init (&childev, childcb, SIGCHLD); 2722 ev_signal_init (&childev, childcb, SIGCHLD);
1732 ev_set_priority (&childev, EV_MAXPRI); 2723 ev_set_priority (&childev, EV_MAXPRI);
1733 ev_signal_start (EV_A_ &childev); 2724 ev_signal_start (EV_A_ &childev);
1734 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2725 ev_unref (EV_A); /* child watcher should not keep loop alive */
1735#endif 2726#endif
… …
1740 2731
1741 return ev_default_loop_ptr; 2732 return ev_default_loop_ptr;
1742} 2733}
1743 2734
1744void 2735void
1745ev_default_destroy (void) 2736ev_loop_fork (EV_P) EV_THROW
1746{ 2737{
1747#if EV_MULTIPLICITY 2738 postfork = 1;
1748 struct ev_loop *loop = ev_default_loop_ptr;
1749#endif
1750
1751 ev_default_loop_ptr = 0;
1752
1753#ifndef _WIN32
1754 ev_ref (EV_A); /* child watcher */
1755 ev_signal_stop (EV_A_ &childev);
1756#endif
1757
1758 loop_destroy (EV_A);
1759}
1760
1761void
1762ev_default_fork (void)
1763{
1764#if EV_MULTIPLICITY
1765 struct ev_loop *loop = ev_default_loop_ptr;
1766#endif
1767
1768 postfork = 1; /* must be in line with ev_loop_fork */
1769} 2739}
1770 2740
1771/*****************************************************************************/ 2741/*****************************************************************************/
1772 2742
1773void 2743void
1774ev_invoke (EV_P_ void *w, int revents) 2744ev_invoke (EV_P_ void *w, int revents)
1775{ 2745{
1776 EV_CB_INVOKE ((W)w, revents); 2746 EV_CB_INVOKE ((W)w, revents);
1777} 2747}
1778 2748
1779inline_speed void 2749unsigned int
1780call_pending (EV_P) 2750ev_pending_count (EV_P) EV_THROW
1781{ 2751{
1782 int pri; 2752 int pri;
2753 unsigned int count = 0;
1783 2754
1784 for (pri = NUMPRI; pri--; ) 2755 for (pri = NUMPRI; pri--; )
2756 count += pendingcnt [pri];
2757
2758 return count;
2759}
2760
2761void noinline
2762ev_invoke_pending (EV_P)
2763{
2764 for (pendingpri = NUMPRI; pendingpri--; ) /* pendingpri is modified during the loop */
1785 while (pendingcnt [pri]) 2765 while (pendingcnt [pendingpri])
1786 { 2766 {
1787 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2767 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1788
1789 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1790 /* ^ this is no longer true, as pending_w could be here */
1791 2768
1792 p->w->pending = 0; 2769 p->w->pending = 0;
1793 EV_CB_INVOKE (p->w, p->events); 2770 EV_CB_INVOKE (p->w, p->events);
1794 EV_FREQUENT_CHECK; 2771 EV_FREQUENT_CHECK;
1795 } 2772 }
… …
1852 EV_FREQUENT_CHECK; 2829 EV_FREQUENT_CHECK;
1853 feed_reverse (EV_A_ (W)w); 2830 feed_reverse (EV_A_ (W)w);
1854 } 2831 }
1855 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2832 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1856 2833
1857 feed_reverse_done (EV_A_ EV_TIMEOUT); 2834 feed_reverse_done (EV_A_ EV_TIMER);
1858 } 2835 }
1859} 2836}
1860 2837
1861#if EV_PERIODIC_ENABLE 2838#if EV_PERIODIC_ENABLE
2839
2840static void noinline
2841periodic_recalc (EV_P_ ev_periodic *w)
2842{
2843 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2844 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2845
2846 /* the above almost always errs on the low side */
2847 while (at <= ev_rt_now)
2848 {
2849 ev_tstamp nat = at + w->interval;
2850
2851 /* when resolution fails us, we use ev_rt_now */
2852 if (expect_false (nat == at))
2853 {
2854 at = ev_rt_now;
2855 break;
2856 }
2857
2858 at = nat;
2859 }
2860
2861 ev_at (w) = at;
2862}
2863
1862/* make periodics pending */ 2864/* make periodics pending */
1863inline_size void 2865inline_size void
1864periodics_reify (EV_P) 2866periodics_reify (EV_P)
1865{ 2867{
1866 EV_FREQUENT_CHECK; 2868 EV_FREQUENT_CHECK;
1867 2869
1868 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2870 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1869 { 2871 {
1870 int feed_count = 0;
1871
1872 do 2872 do
1873 { 2873 {
1874 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2874 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1875 2875
1876 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 2876 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
1885 ANHE_at_cache (periodics [HEAP0]); 2885 ANHE_at_cache (periodics [HEAP0]);
1886 downheap (periodics, periodiccnt, HEAP0); 2886 downheap (periodics, periodiccnt, HEAP0);
1887 } 2887 }
1888 else if (w->interval) 2888 else if (w->interval)
1889 { 2889 {
1890 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2890 periodic_recalc (EV_A_ w);
1891 /* if next trigger time is not sufficiently in the future, put it there */
1892 /* this might happen because of floating point inexactness */
1893 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1894 {
1895 ev_at (w) += w->interval;
1896
1897 /* if interval is unreasonably low we might still have a time in the past */
1898 /* so correct this. this will make the periodic very inexact, but the user */
1899 /* has effectively asked to get triggered more often than possible */
1900 if (ev_at (w) < ev_rt_now)
1901 ev_at (w) = ev_rt_now;
1902 }
1903
1904 ANHE_at_cache (periodics [HEAP0]); 2891 ANHE_at_cache (periodics [HEAP0]);
1905 downheap (periodics, periodiccnt, HEAP0); 2892 downheap (periodics, periodiccnt, HEAP0);
1906 } 2893 }
1907 else 2894 else
1908 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2895 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1915 feed_reverse_done (EV_A_ EV_PERIODIC); 2902 feed_reverse_done (EV_A_ EV_PERIODIC);
1916 } 2903 }
1917} 2904}
1918 2905
1919/* simply recalculate all periodics */ 2906/* simply recalculate all periodics */
1920/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2907/* TODO: maybe ensure that at least one event happens when jumping forward? */
1921static void noinline 2908static void noinline ecb_cold
1922periodics_reschedule (EV_P) 2909periodics_reschedule (EV_P)
1923{ 2910{
1924 int i; 2911 int i;
1925 2912
1926 /* adjust periodics after time jump */ 2913 /* adjust periodics after time jump */
… …
1929 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2916 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1930 2917
1931 if (w->reschedule_cb) 2918 if (w->reschedule_cb)
1932 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2919 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1933 else if (w->interval) 2920 else if (w->interval)
1934 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2921 periodic_recalc (EV_A_ w);
1935 2922
1936 ANHE_at_cache (periodics [i]); 2923 ANHE_at_cache (periodics [i]);
1937 } 2924 }
1938 2925
1939 reheap (periodics, periodiccnt); 2926 reheap (periodics, periodiccnt);
1940} 2927}
1941#endif 2928#endif
1942 2929
1943/* adjust all timers by a given offset */ 2930/* adjust all timers by a given offset */
1944static void noinline 2931static void noinline ecb_cold
1945timers_reschedule (EV_P_ ev_tstamp adjust) 2932timers_reschedule (EV_P_ ev_tstamp adjust)
1946{ 2933{
1947 int i; 2934 int i;
1948 2935
1949 for (i = 0; i < timercnt; ++i) 2936 for (i = 0; i < timercnt; ++i)
… …
1953 ANHE_at_cache (*he); 2940 ANHE_at_cache (*he);
1954 } 2941 }
1955} 2942}
1956 2943
1957/* fetch new monotonic and realtime times from the kernel */ 2944/* fetch new monotonic and realtime times from the kernel */
1958/* also detetc if there was a timejump, and act accordingly */ 2945/* also detect if there was a timejump, and act accordingly */
1959inline_speed void 2946inline_speed void
1960time_update (EV_P_ ev_tstamp max_block) 2947time_update (EV_P_ ev_tstamp max_block)
1961{ 2948{
1962#if EV_USE_MONOTONIC 2949#if EV_USE_MONOTONIC
1963 if (expect_true (have_monotonic)) 2950 if (expect_true (have_monotonic))
… …
1986 * doesn't hurt either as we only do this on time-jumps or 2973 * doesn't hurt either as we only do this on time-jumps or
1987 * in the unlikely event of having been preempted here. 2974 * in the unlikely event of having been preempted here.
1988 */ 2975 */
1989 for (i = 4; --i; ) 2976 for (i = 4; --i; )
1990 { 2977 {
2978 ev_tstamp diff;
1991 rtmn_diff = ev_rt_now - mn_now; 2979 rtmn_diff = ev_rt_now - mn_now;
1992 2980
2981 diff = odiff - rtmn_diff;
2982
1993 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2983 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1994 return; /* all is well */ 2984 return; /* all is well */
1995 2985
1996 ev_rt_now = ev_time (); 2986 ev_rt_now = ev_time ();
1997 mn_now = get_clock (); 2987 mn_now = get_clock ();
1998 now_floor = mn_now; 2988 now_floor = mn_now;
… …
2020 3010
2021 mn_now = ev_rt_now; 3011 mn_now = ev_rt_now;
2022 } 3012 }
2023} 3013}
2024 3014
2025static int loop_done; 3015int
2026
2027void
2028ev_loop (EV_P_ int flags) 3016ev_run (EV_P_ int flags)
2029{ 3017{
3018#if EV_FEATURE_API
3019 ++loop_depth;
3020#endif
3021
3022 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
3023
2030 loop_done = EVUNLOOP_CANCEL; 3024 loop_done = EVBREAK_CANCEL;
2031 3025
2032 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 3026 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2033 3027
2034 do 3028 do
2035 { 3029 {
2036#if EV_VERIFY >= 2 3030#if EV_VERIFY >= 2
2037 ev_loop_verify (EV_A); 3031 ev_verify (EV_A);
2038#endif 3032#endif
2039 3033
2040#ifndef _WIN32 3034#ifndef _WIN32
2041 if (expect_false (curpid)) /* penalise the forking check even more */ 3035 if (expect_false (curpid)) /* penalise the forking check even more */
2042 if (expect_false (getpid () != curpid)) 3036 if (expect_false (getpid () != curpid))
… …
2050 /* we might have forked, so queue fork handlers */ 3044 /* we might have forked, so queue fork handlers */
2051 if (expect_false (postfork)) 3045 if (expect_false (postfork))
2052 if (forkcnt) 3046 if (forkcnt)
2053 { 3047 {
2054 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3048 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2055 call_pending (EV_A); 3049 EV_INVOKE_PENDING;
2056 } 3050 }
2057#endif 3051#endif
2058 3052
3053#if EV_PREPARE_ENABLE
2059 /* queue prepare watchers (and execute them) */ 3054 /* queue prepare watchers (and execute them) */
2060 if (expect_false (preparecnt)) 3055 if (expect_false (preparecnt))
2061 { 3056 {
2062 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3057 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2063 call_pending (EV_A); 3058 EV_INVOKE_PENDING;
2064 } 3059 }
3060#endif
3061
3062 if (expect_false (loop_done))
3063 break;
2065 3064
2066 /* we might have forked, so reify kernel state if necessary */ 3065 /* we might have forked, so reify kernel state if necessary */
2067 if (expect_false (postfork)) 3066 if (expect_false (postfork))
2068 loop_fork (EV_A); 3067 loop_fork (EV_A);
2069 3068
… …
2073 /* calculate blocking time */ 3072 /* calculate blocking time */
2074 { 3073 {
2075 ev_tstamp waittime = 0.; 3074 ev_tstamp waittime = 0.;
2076 ev_tstamp sleeptime = 0.; 3075 ev_tstamp sleeptime = 0.;
2077 3076
3077 /* remember old timestamp for io_blocktime calculation */
3078 ev_tstamp prev_mn_now = mn_now;
3079
3080 /* update time to cancel out callback processing overhead */
3081 time_update (EV_A_ 1e100);
3082
3083 /* from now on, we want a pipe-wake-up */
3084 pipe_write_wanted = 1;
3085
3086 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3087
2078 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3088 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2079 { 3089 {
2080 /* remember old timestamp for io_blocktime calculation */
2081 ev_tstamp prev_mn_now = mn_now;
2082
2083 /* update time to cancel out callback processing overhead */
2084 time_update (EV_A_ 1e100);
2085
2086 waittime = MAX_BLOCKTIME; 3090 waittime = MAX_BLOCKTIME;
2087 3091
2088 if (timercnt) 3092 if (timercnt)
2089 { 3093 {
2090 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3094 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2091 if (waittime > to) waittime = to; 3095 if (waittime > to) waittime = to;
2092 } 3096 }
2093 3097
2094#if EV_PERIODIC_ENABLE 3098#if EV_PERIODIC_ENABLE
2095 if (periodiccnt) 3099 if (periodiccnt)
2096 { 3100 {
2097 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3101 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2098 if (waittime > to) waittime = to; 3102 if (waittime > to) waittime = to;
2099 } 3103 }
2100#endif 3104#endif
2101 3105
2102 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3106 /* don't let timeouts decrease the waittime below timeout_blocktime */
2103 if (expect_false (waittime < timeout_blocktime)) 3107 if (expect_false (waittime < timeout_blocktime))
2104 waittime = timeout_blocktime; 3108 waittime = timeout_blocktime;
3109
3110 /* at this point, we NEED to wait, so we have to ensure */
3111 /* to pass a minimum nonzero value to the backend */
3112 if (expect_false (waittime < backend_mintime))
3113 waittime = backend_mintime;
2105 3114
2106 /* extra check because io_blocktime is commonly 0 */ 3115 /* extra check because io_blocktime is commonly 0 */
2107 if (expect_false (io_blocktime)) 3116 if (expect_false (io_blocktime))
2108 { 3117 {
2109 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3118 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2110 3119
2111 if (sleeptime > waittime - backend_fudge) 3120 if (sleeptime > waittime - backend_mintime)
2112 sleeptime = waittime - backend_fudge; 3121 sleeptime = waittime - backend_mintime;
2113 3122
2114 if (expect_true (sleeptime > 0.)) 3123 if (expect_true (sleeptime > 0.))
2115 { 3124 {
2116 ev_sleep (sleeptime); 3125 ev_sleep (sleeptime);
2117 waittime -= sleeptime; 3126 waittime -= sleeptime;
2118 } 3127 }
2119 } 3128 }
2120 } 3129 }
2121 3130
3131#if EV_FEATURE_API
2122 ++loop_count; 3132 ++loop_count;
3133#endif
3134 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2123 backend_poll (EV_A_ waittime); 3135 backend_poll (EV_A_ waittime);
3136 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3137
3138 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3139
3140 if (pipe_write_skipped)
3141 {
3142 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3143 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3144 }
3145
2124 3146
2125 /* update ev_rt_now, do magic */ 3147 /* update ev_rt_now, do magic */
2126 time_update (EV_A_ waittime + sleeptime); 3148 time_update (EV_A_ waittime + sleeptime);
2127 } 3149 }
2128 3150
… …
2135#if EV_IDLE_ENABLE 3157#if EV_IDLE_ENABLE
2136 /* queue idle watchers unless other events are pending */ 3158 /* queue idle watchers unless other events are pending */
2137 idle_reify (EV_A); 3159 idle_reify (EV_A);
2138#endif 3160#endif
2139 3161
3162#if EV_CHECK_ENABLE
2140 /* queue check watchers, to be executed first */ 3163 /* queue check watchers, to be executed first */
2141 if (expect_false (checkcnt)) 3164 if (expect_false (checkcnt))
2142 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3165 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3166#endif
2143 3167
2144 call_pending (EV_A); 3168 EV_INVOKE_PENDING;
2145 } 3169 }
2146 while (expect_true ( 3170 while (expect_true (
2147 activecnt 3171 activecnt
2148 && !loop_done 3172 && !loop_done
2149 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3173 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2150 )); 3174 ));
2151 3175
2152 if (loop_done == EVUNLOOP_ONE) 3176 if (loop_done == EVBREAK_ONE)
2153 loop_done = EVUNLOOP_CANCEL; 3177 loop_done = EVBREAK_CANCEL;
3178
3179#if EV_FEATURE_API
3180 --loop_depth;
3181#endif
3182
3183 return activecnt;
2154} 3184}
2155 3185
2156void 3186void
2157ev_unloop (EV_P_ int how) 3187ev_break (EV_P_ int how) EV_THROW
2158{ 3188{
2159 loop_done = how; 3189 loop_done = how;
2160} 3190}
2161 3191
2162void 3192void
2163ev_ref (EV_P) 3193ev_ref (EV_P) EV_THROW
2164{ 3194{
2165 ++activecnt; 3195 ++activecnt;
2166} 3196}
2167 3197
2168void 3198void
2169ev_unref (EV_P) 3199ev_unref (EV_P) EV_THROW
2170{ 3200{
2171 --activecnt; 3201 --activecnt;
2172} 3202}
2173 3203
2174void 3204void
2175ev_now_update (EV_P) 3205ev_now_update (EV_P) EV_THROW
2176{ 3206{
2177 time_update (EV_A_ 1e100); 3207 time_update (EV_A_ 1e100);
2178} 3208}
2179 3209
2180void 3210void
2181ev_suspend (EV_P) 3211ev_suspend (EV_P) EV_THROW
2182{ 3212{
2183 ev_now_update (EV_A); 3213 ev_now_update (EV_A);
2184} 3214}
2185 3215
2186void 3216void
2187ev_resume (EV_P) 3217ev_resume (EV_P) EV_THROW
2188{ 3218{
2189 ev_tstamp mn_prev = mn_now; 3219 ev_tstamp mn_prev = mn_now;
2190 3220
2191 ev_now_update (EV_A); 3221 ev_now_update (EV_A);
2192 timers_reschedule (EV_A_ mn_now - mn_prev); 3222 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2209inline_size void 3239inline_size void
2210wlist_del (WL *head, WL elem) 3240wlist_del (WL *head, WL elem)
2211{ 3241{
2212 while (*head) 3242 while (*head)
2213 { 3243 {
2214 if (*head == elem) 3244 if (expect_true (*head == elem))
2215 { 3245 {
2216 *head = elem->next; 3246 *head = elem->next;
2217 return; 3247 break;
2218 } 3248 }
2219 3249
2220 head = &(*head)->next; 3250 head = &(*head)->next;
2221 } 3251 }
2222} 3252}
… …
2231 w->pending = 0; 3261 w->pending = 0;
2232 } 3262 }
2233} 3263}
2234 3264
2235int 3265int
2236ev_clear_pending (EV_P_ void *w) 3266ev_clear_pending (EV_P_ void *w) EV_THROW
2237{ 3267{
2238 W w_ = (W)w; 3268 W w_ = (W)w;
2239 int pending = w_->pending; 3269 int pending = w_->pending;
2240 3270
2241 if (expect_true (pending)) 3271 if (expect_true (pending))
… …
2250} 3280}
2251 3281
2252inline_size void 3282inline_size void
2253pri_adjust (EV_P_ W w) 3283pri_adjust (EV_P_ W w)
2254{ 3284{
2255 int pri = w->priority; 3285 int pri = ev_priority (w);
2256 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 3286 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2257 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 3287 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2258 w->priority = pri; 3288 ev_set_priority (w, pri);
2259} 3289}
2260 3290
2261inline_speed void 3291inline_speed void
2262ev_start (EV_P_ W w, int active) 3292ev_start (EV_P_ W w, int active)
2263{ 3293{
… …
2274} 3304}
2275 3305
2276/*****************************************************************************/ 3306/*****************************************************************************/
2277 3307
2278void noinline 3308void noinline
2279ev_io_start (EV_P_ ev_io *w) 3309ev_io_start (EV_P_ ev_io *w) EV_THROW
2280{ 3310{
2281 int fd = w->fd; 3311 int fd = w->fd;
2282 3312
2283 if (expect_false (ev_is_active (w))) 3313 if (expect_false (ev_is_active (w)))
2284 return; 3314 return;
2285 3315
2286 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3316 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2287 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3317 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2288 3318
2289 EV_FREQUENT_CHECK; 3319 EV_FREQUENT_CHECK;
2290 3320
2291 ev_start (EV_A_ (W)w, 1); 3321 ev_start (EV_A_ (W)w, 1);
2292 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3322 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2293 wlist_add (&anfds[fd].head, (WL)w); 3323 wlist_add (&anfds[fd].head, (WL)w);
2294 3324
3325 /* common bug, apparently */
3326 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3327
2295 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); 3328 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2296 w->events &= ~EV__IOFDSET; 3329 w->events &= ~EV__IOFDSET;
2297 3330
2298 EV_FREQUENT_CHECK; 3331 EV_FREQUENT_CHECK;
2299} 3332}
2300 3333
2301void noinline 3334void noinline
2302ev_io_stop (EV_P_ ev_io *w) 3335ev_io_stop (EV_P_ ev_io *w) EV_THROW
2303{ 3336{
2304 clear_pending (EV_A_ (W)w); 3337 clear_pending (EV_A_ (W)w);
2305 if (expect_false (!ev_is_active (w))) 3338 if (expect_false (!ev_is_active (w)))
2306 return; 3339 return;
2307 3340
… …
2310 EV_FREQUENT_CHECK; 3343 EV_FREQUENT_CHECK;
2311 3344
2312 wlist_del (&anfds[w->fd].head, (WL)w); 3345 wlist_del (&anfds[w->fd].head, (WL)w);
2313 ev_stop (EV_A_ (W)w); 3346 ev_stop (EV_A_ (W)w);
2314 3347
2315 fd_change (EV_A_ w->fd, 1); 3348 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2316 3349
2317 EV_FREQUENT_CHECK; 3350 EV_FREQUENT_CHECK;
2318} 3351}
2319 3352
2320void noinline 3353void noinline
2321ev_timer_start (EV_P_ ev_timer *w) 3354ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2322{ 3355{
2323 if (expect_false (ev_is_active (w))) 3356 if (expect_false (ev_is_active (w)))
2324 return; 3357 return;
2325 3358
2326 ev_at (w) += mn_now; 3359 ev_at (w) += mn_now;
… …
2340 3373
2341 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3374 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2342} 3375}
2343 3376
2344void noinline 3377void noinline
2345ev_timer_stop (EV_P_ ev_timer *w) 3378ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2346{ 3379{
2347 clear_pending (EV_A_ (W)w); 3380 clear_pending (EV_A_ (W)w);
2348 if (expect_false (!ev_is_active (w))) 3381 if (expect_false (!ev_is_active (w)))
2349 return; 3382 return;
2350 3383
… …
2362 timers [active] = timers [timercnt + HEAP0]; 3395 timers [active] = timers [timercnt + HEAP0];
2363 adjustheap (timers, timercnt, active); 3396 adjustheap (timers, timercnt, active);
2364 } 3397 }
2365 } 3398 }
2366 3399
2367 EV_FREQUENT_CHECK;
2368
2369 ev_at (w) -= mn_now; 3400 ev_at (w) -= mn_now;
2370 3401
2371 ev_stop (EV_A_ (W)w); 3402 ev_stop (EV_A_ (W)w);
3403
3404 EV_FREQUENT_CHECK;
2372} 3405}
2373 3406
2374void noinline 3407void noinline
2375ev_timer_again (EV_P_ ev_timer *w) 3408ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2376{ 3409{
2377 EV_FREQUENT_CHECK; 3410 EV_FREQUENT_CHECK;
3411
3412 clear_pending (EV_A_ (W)w);
2378 3413
2379 if (ev_is_active (w)) 3414 if (ev_is_active (w))
2380 { 3415 {
2381 if (w->repeat) 3416 if (w->repeat)
2382 { 3417 {
… …
2394 } 3429 }
2395 3430
2396 EV_FREQUENT_CHECK; 3431 EV_FREQUENT_CHECK;
2397} 3432}
2398 3433
3434ev_tstamp
3435ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
3436{
3437 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3438}
3439
2399#if EV_PERIODIC_ENABLE 3440#if EV_PERIODIC_ENABLE
2400void noinline 3441void noinline
2401ev_periodic_start (EV_P_ ev_periodic *w) 3442ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2402{ 3443{
2403 if (expect_false (ev_is_active (w))) 3444 if (expect_false (ev_is_active (w)))
2404 return; 3445 return;
2405 3446
2406 if (w->reschedule_cb) 3447 if (w->reschedule_cb)
2407 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3448 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2408 else if (w->interval) 3449 else if (w->interval)
2409 { 3450 {
2410 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3451 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2411 /* this formula differs from the one in periodic_reify because we do not always round up */ 3452 periodic_recalc (EV_A_ w);
2412 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2413 } 3453 }
2414 else 3454 else
2415 ev_at (w) = w->offset; 3455 ev_at (w) = w->offset;
2416 3456
2417 EV_FREQUENT_CHECK; 3457 EV_FREQUENT_CHECK;
… …
2427 3467
2428 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3468 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2429} 3469}
2430 3470
2431void noinline 3471void noinline
2432ev_periodic_stop (EV_P_ ev_periodic *w) 3472ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2433{ 3473{
2434 clear_pending (EV_A_ (W)w); 3474 clear_pending (EV_A_ (W)w);
2435 if (expect_false (!ev_is_active (w))) 3475 if (expect_false (!ev_is_active (w)))
2436 return; 3476 return;
2437 3477
… …
2449 periodics [active] = periodics [periodiccnt + HEAP0]; 3489 periodics [active] = periodics [periodiccnt + HEAP0];
2450 adjustheap (periodics, periodiccnt, active); 3490 adjustheap (periodics, periodiccnt, active);
2451 } 3491 }
2452 } 3492 }
2453 3493
2454 EV_FREQUENT_CHECK;
2455
2456 ev_stop (EV_A_ (W)w); 3494 ev_stop (EV_A_ (W)w);
3495
3496 EV_FREQUENT_CHECK;
2457} 3497}
2458 3498
2459void noinline 3499void noinline
2460ev_periodic_again (EV_P_ ev_periodic *w) 3500ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2461{ 3501{
2462 /* TODO: use adjustheap and recalculation */ 3502 /* TODO: use adjustheap and recalculation */
2463 ev_periodic_stop (EV_A_ w); 3503 ev_periodic_stop (EV_A_ w);
2464 ev_periodic_start (EV_A_ w); 3504 ev_periodic_start (EV_A_ w);
2465} 3505}
… …
2467 3507
2468#ifndef SA_RESTART 3508#ifndef SA_RESTART
2469# define SA_RESTART 0 3509# define SA_RESTART 0
2470#endif 3510#endif
2471 3511
3512#if EV_SIGNAL_ENABLE
3513
2472void noinline 3514void noinline
2473ev_signal_start (EV_P_ ev_signal *w) 3515ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2474{ 3516{
2475#if EV_MULTIPLICITY
2476 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2477#endif
2478 if (expect_false (ev_is_active (w))) 3517 if (expect_false (ev_is_active (w)))
2479 return; 3518 return;
2480 3519
2481 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 3520 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2482 3521
2483 evpipe_init (EV_A); 3522#if EV_MULTIPLICITY
3523 assert (("libev: a signal must not be attached to two different loops",
3524 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2484 3525
2485 EV_FREQUENT_CHECK; 3526 signals [w->signum - 1].loop = EV_A;
3527#endif
2486 3528
3529 EV_FREQUENT_CHECK;
3530
3531#if EV_USE_SIGNALFD
3532 if (sigfd == -2)
2487 { 3533 {
2488#ifndef _WIN32 3534 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2489 sigset_t full, prev; 3535 if (sigfd < 0 && errno == EINVAL)
2490 sigfillset (&full); 3536 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2491 sigprocmask (SIG_SETMASK, &full, &prev);
2492#endif
2493 3537
2494 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 3538 if (sigfd >= 0)
3539 {
3540 fd_intern (sigfd); /* doing it twice will not hurt */
2495 3541
2496#ifndef _WIN32 3542 sigemptyset (&sigfd_set);
2497 sigprocmask (SIG_SETMASK, &prev, 0); 3543
2498#endif 3544 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3545 ev_set_priority (&sigfd_w, EV_MAXPRI);
3546 ev_io_start (EV_A_ &sigfd_w);
3547 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3548 }
2499 } 3549 }
3550
3551 if (sigfd >= 0)
3552 {
3553 /* TODO: check .head */
3554 sigaddset (&sigfd_set, w->signum);
3555 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3556
3557 signalfd (sigfd, &sigfd_set, 0);
3558 }
3559#endif
2500 3560
2501 ev_start (EV_A_ (W)w, 1); 3561 ev_start (EV_A_ (W)w, 1);
2502 wlist_add (&signals [w->signum - 1].head, (WL)w); 3562 wlist_add (&signals [w->signum - 1].head, (WL)w);
2503 3563
2504 if (!((WL)w)->next) 3564 if (!((WL)w)->next)
3565# if EV_USE_SIGNALFD
3566 if (sigfd < 0) /*TODO*/
3567# endif
2505 { 3568 {
2506#if _WIN32 3569# ifdef _WIN32
3570 evpipe_init (EV_A);
3571
2507 signal (w->signum, ev_sighandler); 3572 signal (w->signum, ev_sighandler);
2508#else 3573# else
2509 struct sigaction sa; 3574 struct sigaction sa;
3575
3576 evpipe_init (EV_A);
3577
2510 sa.sa_handler = ev_sighandler; 3578 sa.sa_handler = ev_sighandler;
2511 sigfillset (&sa.sa_mask); 3579 sigfillset (&sa.sa_mask);
2512 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3580 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2513 sigaction (w->signum, &sa, 0); 3581 sigaction (w->signum, &sa, 0);
3582
3583 if (origflags & EVFLAG_NOSIGMASK)
3584 {
3585 sigemptyset (&sa.sa_mask);
3586 sigaddset (&sa.sa_mask, w->signum);
3587 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3588 }
2514#endif 3589#endif
2515 } 3590 }
2516 3591
2517 EV_FREQUENT_CHECK; 3592 EV_FREQUENT_CHECK;
2518} 3593}
2519 3594
2520void noinline 3595void noinline
2521ev_signal_stop (EV_P_ ev_signal *w) 3596ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2522{ 3597{
2523 clear_pending (EV_A_ (W)w); 3598 clear_pending (EV_A_ (W)w);
2524 if (expect_false (!ev_is_active (w))) 3599 if (expect_false (!ev_is_active (w)))
2525 return; 3600 return;
2526 3601
… …
2528 3603
2529 wlist_del (&signals [w->signum - 1].head, (WL)w); 3604 wlist_del (&signals [w->signum - 1].head, (WL)w);
2530 ev_stop (EV_A_ (W)w); 3605 ev_stop (EV_A_ (W)w);
2531 3606
2532 if (!signals [w->signum - 1].head) 3607 if (!signals [w->signum - 1].head)
3608 {
3609#if EV_MULTIPLICITY
3610 signals [w->signum - 1].loop = 0; /* unattach from signal */
3611#endif
3612#if EV_USE_SIGNALFD
3613 if (sigfd >= 0)
3614 {
3615 sigset_t ss;
3616
3617 sigemptyset (&ss);
3618 sigaddset (&ss, w->signum);
3619 sigdelset (&sigfd_set, w->signum);
3620
3621 signalfd (sigfd, &sigfd_set, 0);
3622 sigprocmask (SIG_UNBLOCK, &ss, 0);
3623 }
3624 else
3625#endif
2533 signal (w->signum, SIG_DFL); 3626 signal (w->signum, SIG_DFL);
3627 }
2534 3628
2535 EV_FREQUENT_CHECK; 3629 EV_FREQUENT_CHECK;
2536} 3630}
3631
3632#endif
3633
3634#if EV_CHILD_ENABLE
2537 3635
2538void 3636void
2539ev_child_start (EV_P_ ev_child *w) 3637ev_child_start (EV_P_ ev_child *w) EV_THROW
2540{ 3638{
2541#if EV_MULTIPLICITY 3639#if EV_MULTIPLICITY
2542 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3640 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2543#endif 3641#endif
2544 if (expect_false (ev_is_active (w))) 3642 if (expect_false (ev_is_active (w)))
2545 return; 3643 return;
2546 3644
2547 EV_FREQUENT_CHECK; 3645 EV_FREQUENT_CHECK;
2548 3646
2549 ev_start (EV_A_ (W)w, 1); 3647 ev_start (EV_A_ (W)w, 1);
2550 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3648 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2551 3649
2552 EV_FREQUENT_CHECK; 3650 EV_FREQUENT_CHECK;
2553} 3651}
2554 3652
2555void 3653void
2556ev_child_stop (EV_P_ ev_child *w) 3654ev_child_stop (EV_P_ ev_child *w) EV_THROW
2557{ 3655{
2558 clear_pending (EV_A_ (W)w); 3656 clear_pending (EV_A_ (W)w);
2559 if (expect_false (!ev_is_active (w))) 3657 if (expect_false (!ev_is_active (w)))
2560 return; 3658 return;
2561 3659
2562 EV_FREQUENT_CHECK; 3660 EV_FREQUENT_CHECK;
2563 3661
2564 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3662 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2565 ev_stop (EV_A_ (W)w); 3663 ev_stop (EV_A_ (W)w);
2566 3664
2567 EV_FREQUENT_CHECK; 3665 EV_FREQUENT_CHECK;
2568} 3666}
3667
3668#endif
2569 3669
2570#if EV_STAT_ENABLE 3670#if EV_STAT_ENABLE
2571 3671
2572# ifdef _WIN32 3672# ifdef _WIN32
2573# undef lstat 3673# undef lstat
… …
2579#define MIN_STAT_INTERVAL 0.1074891 3679#define MIN_STAT_INTERVAL 0.1074891
2580 3680
2581static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3681static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2582 3682
2583#if EV_USE_INOTIFY 3683#if EV_USE_INOTIFY
2584# define EV_INOTIFY_BUFSIZE 8192 3684
3685/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3686# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2585 3687
2586static void noinline 3688static void noinline
2587infy_add (EV_P_ ev_stat *w) 3689infy_add (EV_P_ ev_stat *w)
2588{ 3690{
2589 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 3691 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
2590 3692
2591 if (w->wd < 0) 3693 if (w->wd >= 0)
3694 {
3695 struct statfs sfs;
3696
3697 /* now local changes will be tracked by inotify, but remote changes won't */
3698 /* unless the filesystem is known to be local, we therefore still poll */
3699 /* also do poll on <2.6.25, but with normal frequency */
3700
3701 if (!fs_2625)
3702 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3703 else if (!statfs (w->path, &sfs)
3704 && (sfs.f_type == 0x1373 /* devfs */
3705 || sfs.f_type == 0xEF53 /* ext2/3 */
3706 || sfs.f_type == 0x3153464a /* jfs */
3707 || sfs.f_type == 0x52654973 /* reiser3 */
3708 || sfs.f_type == 0x01021994 /* tempfs */
3709 || sfs.f_type == 0x58465342 /* xfs */))
3710 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3711 else
3712 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2592 { 3713 }
3714 else
3715 {
3716 /* can't use inotify, continue to stat */
2593 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3717 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2594 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2595 3718
2596 /* monitor some parent directory for speedup hints */ 3719 /* if path is not there, monitor some parent directory for speedup hints */
2597 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3720 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2598 /* but an efficiency issue only */ 3721 /* but an efficiency issue only */
2599 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3722 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2600 { 3723 {
2601 char path [4096]; 3724 char path [4096];
… …
2611 if (!pend || pend == path) 3734 if (!pend || pend == path)
2612 break; 3735 break;
2613 3736
2614 *pend = 0; 3737 *pend = 0;
2615 w->wd = inotify_add_watch (fs_fd, path, mask); 3738 w->wd = inotify_add_watch (fs_fd, path, mask);
2616 } 3739 }
2617 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3740 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2618 } 3741 }
2619 } 3742 }
2620 3743
2621 if (w->wd >= 0) 3744 if (w->wd >= 0)
2622 {
2623 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3745 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2624 3746
2625 /* now local changes will be tracked by inotify, but remote changes won't */ 3747 /* now re-arm timer, if required */
2626 /* unless the filesystem it known to be local, we therefore still poll */ 3748 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2627 /* also do poll on <2.6.25, but with normal frequency */
2628 struct statfs sfs;
2629
2630 if (fs_2625 && !statfs (w->path, &sfs))
2631 if (sfs.f_type == 0x1373 /* devfs */
2632 || sfs.f_type == 0xEF53 /* ext2/3 */
2633 || sfs.f_type == 0x3153464a /* jfs */
2634 || sfs.f_type == 0x52654973 /* reiser3 */
2635 || sfs.f_type == 0x01021994 /* tempfs */
2636 || sfs.f_type == 0x58465342 /* xfs */)
2637 return;
2638
2639 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2640 ev_timer_again (EV_A_ &w->timer); 3749 ev_timer_again (EV_A_ &w->timer);
2641 } 3750 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2642} 3751}
2643 3752
2644static void noinline 3753static void noinline
2645infy_del (EV_P_ ev_stat *w) 3754infy_del (EV_P_ ev_stat *w)
2646{ 3755{
… …
2649 3758
2650 if (wd < 0) 3759 if (wd < 0)
2651 return; 3760 return;
2652 3761
2653 w->wd = -2; 3762 w->wd = -2;
2654 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3763 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2655 wlist_del (&fs_hash [slot].head, (WL)w); 3764 wlist_del (&fs_hash [slot].head, (WL)w);
2656 3765
2657 /* remove this watcher, if others are watching it, they will rearm */ 3766 /* remove this watcher, if others are watching it, they will rearm */
2658 inotify_rm_watch (fs_fd, wd); 3767 inotify_rm_watch (fs_fd, wd);
2659} 3768}
… …
2661static void noinline 3770static void noinline
2662infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3771infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2663{ 3772{
2664 if (slot < 0) 3773 if (slot < 0)
2665 /* overflow, need to check for all hash slots */ 3774 /* overflow, need to check for all hash slots */
2666 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3775 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2667 infy_wd (EV_A_ slot, wd, ev); 3776 infy_wd (EV_A_ slot, wd, ev);
2668 else 3777 else
2669 { 3778 {
2670 WL w_; 3779 WL w_;
2671 3780
2672 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3781 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2673 { 3782 {
2674 ev_stat *w = (ev_stat *)w_; 3783 ev_stat *w = (ev_stat *)w_;
2675 w_ = w_->next; /* lets us remove this watcher and all before it */ 3784 w_ = w_->next; /* lets us remove this watcher and all before it */
2676 3785
2677 if (w->wd == wd || wd == -1) 3786 if (w->wd == wd || wd == -1)
2678 { 3787 {
2679 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3788 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2680 { 3789 {
2681 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3790 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2682 w->wd = -1; 3791 w->wd = -1;
2683 infy_add (EV_A_ w); /* re-add, no matter what */ 3792 infy_add (EV_A_ w); /* re-add, no matter what */
2684 } 3793 }
2685 3794
2686 stat_timer_cb (EV_A_ &w->timer, 0); 3795 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2691 3800
2692static void 3801static void
2693infy_cb (EV_P_ ev_io *w, int revents) 3802infy_cb (EV_P_ ev_io *w, int revents)
2694{ 3803{
2695 char buf [EV_INOTIFY_BUFSIZE]; 3804 char buf [EV_INOTIFY_BUFSIZE];
2696 struct inotify_event *ev = (struct inotify_event *)buf;
2697 int ofs; 3805 int ofs;
2698 int len = read (fs_fd, buf, sizeof (buf)); 3806 int len = read (fs_fd, buf, sizeof (buf));
2699 3807
2700 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3808 for (ofs = 0; ofs < len; )
3809 {
3810 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2701 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3811 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3812 ofs += sizeof (struct inotify_event) + ev->len;
3813 }
2702} 3814}
2703 3815
2704inline_size void 3816inline_size void ecb_cold
2705check_2625 (EV_P) 3817ev_check_2625 (EV_P)
2706{ 3818{
2707 /* kernels < 2.6.25 are borked 3819 /* kernels < 2.6.25 are borked
2708 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3820 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2709 */ 3821 */
2710 struct utsname buf; 3822 if (ev_linux_version () < 0x020619)
2711 int major, minor, micro;
2712
2713 if (uname (&buf))
2714 return; 3823 return;
2715 3824
2716 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2717 return;
2718
2719 if (major < 2
2720 || (major == 2 && minor < 6)
2721 || (major == 2 && minor == 6 && micro < 25))
2722 return;
2723
2724 fs_2625 = 1; 3825 fs_2625 = 1;
3826}
3827
3828inline_size int
3829infy_newfd (void)
3830{
3831#if defined IN_CLOEXEC && defined IN_NONBLOCK
3832 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3833 if (fd >= 0)
3834 return fd;
3835#endif
3836 return inotify_init ();
2725} 3837}
2726 3838
2727inline_size void 3839inline_size void
2728infy_init (EV_P) 3840infy_init (EV_P)
2729{ 3841{
2730 if (fs_fd != -2) 3842 if (fs_fd != -2)
2731 return; 3843 return;
2732 3844
2733 fs_fd = -1; 3845 fs_fd = -1;
2734 3846
2735 check_2625 (EV_A); 3847 ev_check_2625 (EV_A);
2736 3848
2737 fs_fd = inotify_init (); 3849 fs_fd = infy_newfd ();
2738 3850
2739 if (fs_fd >= 0) 3851 if (fs_fd >= 0)
2740 { 3852 {
3853 fd_intern (fs_fd);
2741 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3854 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2742 ev_set_priority (&fs_w, EV_MAXPRI); 3855 ev_set_priority (&fs_w, EV_MAXPRI);
2743 ev_io_start (EV_A_ &fs_w); 3856 ev_io_start (EV_A_ &fs_w);
3857 ev_unref (EV_A);
2744 } 3858 }
2745} 3859}
2746 3860
2747inline_size void 3861inline_size void
2748infy_fork (EV_P) 3862infy_fork (EV_P)
… …
2750 int slot; 3864 int slot;
2751 3865
2752 if (fs_fd < 0) 3866 if (fs_fd < 0)
2753 return; 3867 return;
2754 3868
3869 ev_ref (EV_A);
3870 ev_io_stop (EV_A_ &fs_w);
2755 close (fs_fd); 3871 close (fs_fd);
2756 fs_fd = inotify_init (); 3872 fs_fd = infy_newfd ();
2757 3873
3874 if (fs_fd >= 0)
3875 {
3876 fd_intern (fs_fd);
3877 ev_io_set (&fs_w, fs_fd, EV_READ);
3878 ev_io_start (EV_A_ &fs_w);
3879 ev_unref (EV_A);
3880 }
3881
2758 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3882 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2759 { 3883 {
2760 WL w_ = fs_hash [slot].head; 3884 WL w_ = fs_hash [slot].head;
2761 fs_hash [slot].head = 0; 3885 fs_hash [slot].head = 0;
2762 3886
2763 while (w_) 3887 while (w_)
… …
2768 w->wd = -1; 3892 w->wd = -1;
2769 3893
2770 if (fs_fd >= 0) 3894 if (fs_fd >= 0)
2771 infy_add (EV_A_ w); /* re-add, no matter what */ 3895 infy_add (EV_A_ w); /* re-add, no matter what */
2772 else 3896 else
3897 {
3898 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3899 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2773 ev_timer_again (EV_A_ &w->timer); 3900 ev_timer_again (EV_A_ &w->timer);
3901 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3902 }
2774 } 3903 }
2775 } 3904 }
2776} 3905}
2777 3906
2778#endif 3907#endif
… …
2782#else 3911#else
2783# define EV_LSTAT(p,b) lstat (p, b) 3912# define EV_LSTAT(p,b) lstat (p, b)
2784#endif 3913#endif
2785 3914
2786void 3915void
2787ev_stat_stat (EV_P_ ev_stat *w) 3916ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
2788{ 3917{
2789 if (lstat (w->path, &w->attr) < 0) 3918 if (lstat (w->path, &w->attr) < 0)
2790 w->attr.st_nlink = 0; 3919 w->attr.st_nlink = 0;
2791 else if (!w->attr.st_nlink) 3920 else if (!w->attr.st_nlink)
2792 w->attr.st_nlink = 1; 3921 w->attr.st_nlink = 1;
… …
2795static void noinline 3924static void noinline
2796stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3925stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2797{ 3926{
2798 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3927 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2799 3928
2800 /* we copy this here each the time so that */ 3929 ev_statdata prev = w->attr;
2801 /* prev has the old value when the callback gets invoked */
2802 w->prev = w->attr;
2803 ev_stat_stat (EV_A_ w); 3930 ev_stat_stat (EV_A_ w);
2804 3931
2805 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3932 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2806 if ( 3933 if (
2807 w->prev.st_dev != w->attr.st_dev 3934 prev.st_dev != w->attr.st_dev
2808 || w->prev.st_ino != w->attr.st_ino 3935 || prev.st_ino != w->attr.st_ino
2809 || w->prev.st_mode != w->attr.st_mode 3936 || prev.st_mode != w->attr.st_mode
2810 || w->prev.st_nlink != w->attr.st_nlink 3937 || prev.st_nlink != w->attr.st_nlink
2811 || w->prev.st_uid != w->attr.st_uid 3938 || prev.st_uid != w->attr.st_uid
2812 || w->prev.st_gid != w->attr.st_gid 3939 || prev.st_gid != w->attr.st_gid
2813 || w->prev.st_rdev != w->attr.st_rdev 3940 || prev.st_rdev != w->attr.st_rdev
2814 || w->prev.st_size != w->attr.st_size 3941 || prev.st_size != w->attr.st_size
2815 || w->prev.st_atime != w->attr.st_atime 3942 || prev.st_atime != w->attr.st_atime
2816 || w->prev.st_mtime != w->attr.st_mtime 3943 || prev.st_mtime != w->attr.st_mtime
2817 || w->prev.st_ctime != w->attr.st_ctime 3944 || prev.st_ctime != w->attr.st_ctime
2818 ) { 3945 ) {
3946 /* we only update w->prev on actual differences */
3947 /* in case we test more often than invoke the callback, */
3948 /* to ensure that prev is always different to attr */
3949 w->prev = prev;
3950
2819 #if EV_USE_INOTIFY 3951 #if EV_USE_INOTIFY
2820 if (fs_fd >= 0) 3952 if (fs_fd >= 0)
2821 { 3953 {
2822 infy_del (EV_A_ w); 3954 infy_del (EV_A_ w);
2823 infy_add (EV_A_ w); 3955 infy_add (EV_A_ w);
… …
2828 ev_feed_event (EV_A_ w, EV_STAT); 3960 ev_feed_event (EV_A_ w, EV_STAT);
2829 } 3961 }
2830} 3962}
2831 3963
2832void 3964void
2833ev_stat_start (EV_P_ ev_stat *w) 3965ev_stat_start (EV_P_ ev_stat *w) EV_THROW
2834{ 3966{
2835 if (expect_false (ev_is_active (w))) 3967 if (expect_false (ev_is_active (w)))
2836 return; 3968 return;
2837 3969
2838 ev_stat_stat (EV_A_ w); 3970 ev_stat_stat (EV_A_ w);
… …
2848 3980
2849 if (fs_fd >= 0) 3981 if (fs_fd >= 0)
2850 infy_add (EV_A_ w); 3982 infy_add (EV_A_ w);
2851 else 3983 else
2852#endif 3984#endif
3985 {
2853 ev_timer_again (EV_A_ &w->timer); 3986 ev_timer_again (EV_A_ &w->timer);
3987 ev_unref (EV_A);
3988 }
2854 3989
2855 ev_start (EV_A_ (W)w, 1); 3990 ev_start (EV_A_ (W)w, 1);
2856 3991
2857 EV_FREQUENT_CHECK; 3992 EV_FREQUENT_CHECK;
2858} 3993}
2859 3994
2860void 3995void
2861ev_stat_stop (EV_P_ ev_stat *w) 3996ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
2862{ 3997{
2863 clear_pending (EV_A_ (W)w); 3998 clear_pending (EV_A_ (W)w);
2864 if (expect_false (!ev_is_active (w))) 3999 if (expect_false (!ev_is_active (w)))
2865 return; 4000 return;
2866 4001
2867 EV_FREQUENT_CHECK; 4002 EV_FREQUENT_CHECK;
2868 4003
2869#if EV_USE_INOTIFY 4004#if EV_USE_INOTIFY
2870 infy_del (EV_A_ w); 4005 infy_del (EV_A_ w);
2871#endif 4006#endif
4007
4008 if (ev_is_active (&w->timer))
4009 {
4010 ev_ref (EV_A);
2872 ev_timer_stop (EV_A_ &w->timer); 4011 ev_timer_stop (EV_A_ &w->timer);
4012 }
2873 4013
2874 ev_stop (EV_A_ (W)w); 4014 ev_stop (EV_A_ (W)w);
2875 4015
2876 EV_FREQUENT_CHECK; 4016 EV_FREQUENT_CHECK;
2877} 4017}
2878#endif 4018#endif
2879 4019
2880#if EV_IDLE_ENABLE 4020#if EV_IDLE_ENABLE
2881void 4021void
2882ev_idle_start (EV_P_ ev_idle *w) 4022ev_idle_start (EV_P_ ev_idle *w) EV_THROW
2883{ 4023{
2884 if (expect_false (ev_is_active (w))) 4024 if (expect_false (ev_is_active (w)))
2885 return; 4025 return;
2886 4026
2887 pri_adjust (EV_A_ (W)w); 4027 pri_adjust (EV_A_ (W)w);
… …
2900 4040
2901 EV_FREQUENT_CHECK; 4041 EV_FREQUENT_CHECK;
2902} 4042}
2903 4043
2904void 4044void
2905ev_idle_stop (EV_P_ ev_idle *w) 4045ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
2906{ 4046{
2907 clear_pending (EV_A_ (W)w); 4047 clear_pending (EV_A_ (W)w);
2908 if (expect_false (!ev_is_active (w))) 4048 if (expect_false (!ev_is_active (w)))
2909 return; 4049 return;
2910 4050
… …
2922 4062
2923 EV_FREQUENT_CHECK; 4063 EV_FREQUENT_CHECK;
2924} 4064}
2925#endif 4065#endif
2926 4066
4067#if EV_PREPARE_ENABLE
2927void 4068void
2928ev_prepare_start (EV_P_ ev_prepare *w) 4069ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
2929{ 4070{
2930 if (expect_false (ev_is_active (w))) 4071 if (expect_false (ev_is_active (w)))
2931 return; 4072 return;
2932 4073
2933 EV_FREQUENT_CHECK; 4074 EV_FREQUENT_CHECK;
… …
2938 4079
2939 EV_FREQUENT_CHECK; 4080 EV_FREQUENT_CHECK;
2940} 4081}
2941 4082
2942void 4083void
2943ev_prepare_stop (EV_P_ ev_prepare *w) 4084ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
2944{ 4085{
2945 clear_pending (EV_A_ (W)w); 4086 clear_pending (EV_A_ (W)w);
2946 if (expect_false (!ev_is_active (w))) 4087 if (expect_false (!ev_is_active (w)))
2947 return; 4088 return;
2948 4089
… …
2957 4098
2958 ev_stop (EV_A_ (W)w); 4099 ev_stop (EV_A_ (W)w);
2959 4100
2960 EV_FREQUENT_CHECK; 4101 EV_FREQUENT_CHECK;
2961} 4102}
4103#endif
2962 4104
4105#if EV_CHECK_ENABLE
2963void 4106void
2964ev_check_start (EV_P_ ev_check *w) 4107ev_check_start (EV_P_ ev_check *w) EV_THROW
2965{ 4108{
2966 if (expect_false (ev_is_active (w))) 4109 if (expect_false (ev_is_active (w)))
2967 return; 4110 return;
2968 4111
2969 EV_FREQUENT_CHECK; 4112 EV_FREQUENT_CHECK;
… …
2974 4117
2975 EV_FREQUENT_CHECK; 4118 EV_FREQUENT_CHECK;
2976} 4119}
2977 4120
2978void 4121void
2979ev_check_stop (EV_P_ ev_check *w) 4122ev_check_stop (EV_P_ ev_check *w) EV_THROW
2980{ 4123{
2981 clear_pending (EV_A_ (W)w); 4124 clear_pending (EV_A_ (W)w);
2982 if (expect_false (!ev_is_active (w))) 4125 if (expect_false (!ev_is_active (w)))
2983 return; 4126 return;
2984 4127
… …
2993 4136
2994 ev_stop (EV_A_ (W)w); 4137 ev_stop (EV_A_ (W)w);
2995 4138
2996 EV_FREQUENT_CHECK; 4139 EV_FREQUENT_CHECK;
2997} 4140}
4141#endif
2998 4142
2999#if EV_EMBED_ENABLE 4143#if EV_EMBED_ENABLE
3000void noinline 4144void noinline
3001ev_embed_sweep (EV_P_ ev_embed *w) 4145ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3002{ 4146{
3003 ev_loop (w->other, EVLOOP_NONBLOCK); 4147 ev_run (w->other, EVRUN_NOWAIT);
3004} 4148}
3005 4149
3006static void 4150static void
3007embed_io_cb (EV_P_ ev_io *io, int revents) 4151embed_io_cb (EV_P_ ev_io *io, int revents)
3008{ 4152{
3009 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4153 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3010 4154
3011 if (ev_cb (w)) 4155 if (ev_cb (w))
3012 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4156 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3013 else 4157 else
3014 ev_loop (w->other, EVLOOP_NONBLOCK); 4158 ev_run (w->other, EVRUN_NOWAIT);
3015} 4159}
3016 4160
3017static void 4161static void
3018embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4162embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3019{ 4163{
3020 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4164 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3021 4165
3022 { 4166 {
3023 struct ev_loop *loop = w->other; 4167 EV_P = w->other;
3024 4168
3025 while (fdchangecnt) 4169 while (fdchangecnt)
3026 { 4170 {
3027 fd_reify (EV_A); 4171 fd_reify (EV_A);
3028 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4172 ev_run (EV_A_ EVRUN_NOWAIT);
3029 } 4173 }
3030 } 4174 }
3031} 4175}
3032 4176
3033static void 4177static void
… …
3036 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 4180 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3037 4181
3038 ev_embed_stop (EV_A_ w); 4182 ev_embed_stop (EV_A_ w);
3039 4183
3040 { 4184 {
3041 struct ev_loop *loop = w->other; 4185 EV_P = w->other;
3042 4186
3043 ev_loop_fork (EV_A); 4187 ev_loop_fork (EV_A);
3044 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4188 ev_run (EV_A_ EVRUN_NOWAIT);
3045 } 4189 }
3046 4190
3047 ev_embed_start (EV_A_ w); 4191 ev_embed_start (EV_A_ w);
3048} 4192}
3049 4193
… …
3054 ev_idle_stop (EV_A_ idle); 4198 ev_idle_stop (EV_A_ idle);
3055} 4199}
3056#endif 4200#endif
3057 4201
3058void 4202void
3059ev_embed_start (EV_P_ ev_embed *w) 4203ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3060{ 4204{
3061 if (expect_false (ev_is_active (w))) 4205 if (expect_false (ev_is_active (w)))
3062 return; 4206 return;
3063 4207
3064 { 4208 {
3065 struct ev_loop *loop = w->other; 4209 EV_P = w->other;
3066 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4210 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3067 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4211 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3068 } 4212 }
3069 4213
3070 EV_FREQUENT_CHECK; 4214 EV_FREQUENT_CHECK;
… …
3085 4229
3086 EV_FREQUENT_CHECK; 4230 EV_FREQUENT_CHECK;
3087} 4231}
3088 4232
3089void 4233void
3090ev_embed_stop (EV_P_ ev_embed *w) 4234ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3091{ 4235{
3092 clear_pending (EV_A_ (W)w); 4236 clear_pending (EV_A_ (W)w);
3093 if (expect_false (!ev_is_active (w))) 4237 if (expect_false (!ev_is_active (w)))
3094 return; 4238 return;
3095 4239
… …
3097 4241
3098 ev_io_stop (EV_A_ &w->io); 4242 ev_io_stop (EV_A_ &w->io);
3099 ev_prepare_stop (EV_A_ &w->prepare); 4243 ev_prepare_stop (EV_A_ &w->prepare);
3100 ev_fork_stop (EV_A_ &w->fork); 4244 ev_fork_stop (EV_A_ &w->fork);
3101 4245
4246 ev_stop (EV_A_ (W)w);
4247
3102 EV_FREQUENT_CHECK; 4248 EV_FREQUENT_CHECK;
3103} 4249}
3104#endif 4250#endif
3105 4251
3106#if EV_FORK_ENABLE 4252#if EV_FORK_ENABLE
3107void 4253void
3108ev_fork_start (EV_P_ ev_fork *w) 4254ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3109{ 4255{
3110 if (expect_false (ev_is_active (w))) 4256 if (expect_false (ev_is_active (w)))
3111 return; 4257 return;
3112 4258
3113 EV_FREQUENT_CHECK; 4259 EV_FREQUENT_CHECK;
… …
3118 4264
3119 EV_FREQUENT_CHECK; 4265 EV_FREQUENT_CHECK;
3120} 4266}
3121 4267
3122void 4268void
3123ev_fork_stop (EV_P_ ev_fork *w) 4269ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3124{ 4270{
3125 clear_pending (EV_A_ (W)w); 4271 clear_pending (EV_A_ (W)w);
3126 if (expect_false (!ev_is_active (w))) 4272 if (expect_false (!ev_is_active (w)))
3127 return; 4273 return;
3128 4274
… …
3139 4285
3140 EV_FREQUENT_CHECK; 4286 EV_FREQUENT_CHECK;
3141} 4287}
3142#endif 4288#endif
3143 4289
4290#if EV_CLEANUP_ENABLE
4291void
4292ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4293{
4294 if (expect_false (ev_is_active (w)))
4295 return;
4296
4297 EV_FREQUENT_CHECK;
4298
4299 ev_start (EV_A_ (W)w, ++cleanupcnt);
4300 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4301 cleanups [cleanupcnt - 1] = w;
4302
4303 /* cleanup watchers should never keep a refcount on the loop */
4304 ev_unref (EV_A);
4305 EV_FREQUENT_CHECK;
4306}
4307
4308void
4309ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4310{
4311 clear_pending (EV_A_ (W)w);
4312 if (expect_false (!ev_is_active (w)))
4313 return;
4314
4315 EV_FREQUENT_CHECK;
4316 ev_ref (EV_A);
4317
4318 {
4319 int active = ev_active (w);
4320
4321 cleanups [active - 1] = cleanups [--cleanupcnt];
4322 ev_active (cleanups [active - 1]) = active;
4323 }
4324
4325 ev_stop (EV_A_ (W)w);
4326
4327 EV_FREQUENT_CHECK;
4328}
4329#endif
4330
3144#if EV_ASYNC_ENABLE 4331#if EV_ASYNC_ENABLE
3145void 4332void
3146ev_async_start (EV_P_ ev_async *w) 4333ev_async_start (EV_P_ ev_async *w) EV_THROW
3147{ 4334{
3148 if (expect_false (ev_is_active (w))) 4335 if (expect_false (ev_is_active (w)))
3149 return; 4336 return;
4337
4338 w->sent = 0;
3150 4339
3151 evpipe_init (EV_A); 4340 evpipe_init (EV_A);
3152 4341
3153 EV_FREQUENT_CHECK; 4342 EV_FREQUENT_CHECK;
3154 4343
… …
3158 4347
3159 EV_FREQUENT_CHECK; 4348 EV_FREQUENT_CHECK;
3160} 4349}
3161 4350
3162void 4351void
3163ev_async_stop (EV_P_ ev_async *w) 4352ev_async_stop (EV_P_ ev_async *w) EV_THROW
3164{ 4353{
3165 clear_pending (EV_A_ (W)w); 4354 clear_pending (EV_A_ (W)w);
3166 if (expect_false (!ev_is_active (w))) 4355 if (expect_false (!ev_is_active (w)))
3167 return; 4356 return;
3168 4357
… …
3179 4368
3180 EV_FREQUENT_CHECK; 4369 EV_FREQUENT_CHECK;
3181} 4370}
3182 4371
3183void 4372void
3184ev_async_send (EV_P_ ev_async *w) 4373ev_async_send (EV_P_ ev_async *w) EV_THROW
3185{ 4374{
3186 w->sent = 1; 4375 w->sent = 1;
3187 evpipe_write (EV_A_ &gotasync); 4376 evpipe_write (EV_A_ &async_pending);
3188} 4377}
3189#endif 4378#endif
3190 4379
3191/*****************************************************************************/ 4380/*****************************************************************************/
3192 4381
… …
3226 4415
3227 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4416 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3228} 4417}
3229 4418
3230void 4419void
3231ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4420ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3232{ 4421{
3233 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4422 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3234 4423
3235 if (expect_false (!once)) 4424 if (expect_false (!once))
3236 { 4425 {
3237 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4426 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3238 return; 4427 return;
3239 } 4428 }
3240 4429
3241 once->cb = cb; 4430 once->cb = cb;
3242 once->arg = arg; 4431 once->arg = arg;
… …
3257} 4446}
3258 4447
3259/*****************************************************************************/ 4448/*****************************************************************************/
3260 4449
3261#if EV_WALK_ENABLE 4450#if EV_WALK_ENABLE
3262void 4451void ecb_cold
3263ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4452ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3264{ 4453{
3265 int i, j; 4454 int i, j;
3266 ev_watcher_list *wl, *wn; 4455 ev_watcher_list *wl, *wn;
3267 4456
3268 if (types & (EV_IO | EV_EMBED)) 4457 if (types & (EV_IO | EV_EMBED))
… …
3311 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4500 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3312#endif 4501#endif
3313 4502
3314#if EV_IDLE_ENABLE 4503#if EV_IDLE_ENABLE
3315 if (types & EV_IDLE) 4504 if (types & EV_IDLE)
3316 for (j = NUMPRI; i--; ) 4505 for (j = NUMPRI; j--; )
3317 for (i = idlecnt [j]; i--; ) 4506 for (i = idlecnt [j]; i--; )
3318 cb (EV_A_ EV_IDLE, idles [j][i]); 4507 cb (EV_A_ EV_IDLE, idles [j][i]);
3319#endif 4508#endif
3320 4509
3321#if EV_FORK_ENABLE 4510#if EV_FORK_ENABLE
… …
3329 if (types & EV_ASYNC) 4518 if (types & EV_ASYNC)
3330 for (i = asynccnt; i--; ) 4519 for (i = asynccnt; i--; )
3331 cb (EV_A_ EV_ASYNC, asyncs [i]); 4520 cb (EV_A_ EV_ASYNC, asyncs [i]);
3332#endif 4521#endif
3333 4522
4523#if EV_PREPARE_ENABLE
3334 if (types & EV_PREPARE) 4524 if (types & EV_PREPARE)
3335 for (i = preparecnt; i--; ) 4525 for (i = preparecnt; i--; )
3336#if EV_EMBED_ENABLE 4526# if EV_EMBED_ENABLE
3337 if (ev_cb (prepares [i]) != embed_prepare_cb) 4527 if (ev_cb (prepares [i]) != embed_prepare_cb)
3338#endif 4528# endif
3339 cb (EV_A_ EV_PREPARE, prepares [i]); 4529 cb (EV_A_ EV_PREPARE, prepares [i]);
4530#endif
3340 4531
4532#if EV_CHECK_ENABLE
3341 if (types & EV_CHECK) 4533 if (types & EV_CHECK)
3342 for (i = checkcnt; i--; ) 4534 for (i = checkcnt; i--; )
3343 cb (EV_A_ EV_CHECK, checks [i]); 4535 cb (EV_A_ EV_CHECK, checks [i]);
4536#endif
3344 4537
4538#if EV_SIGNAL_ENABLE
3345 if (types & EV_SIGNAL) 4539 if (types & EV_SIGNAL)
3346 for (i = 0; i < signalmax; ++i) 4540 for (i = 0; i < EV_NSIG - 1; ++i)
3347 for (wl = signals [i].head; wl; ) 4541 for (wl = signals [i].head; wl; )
3348 { 4542 {
3349 wn = wl->next; 4543 wn = wl->next;
3350 cb (EV_A_ EV_SIGNAL, wl); 4544 cb (EV_A_ EV_SIGNAL, wl);
3351 wl = wn; 4545 wl = wn;
3352 } 4546 }
4547#endif
3353 4548
4549#if EV_CHILD_ENABLE
3354 if (types & EV_CHILD) 4550 if (types & EV_CHILD)
3355 for (i = EV_PID_HASHSIZE; i--; ) 4551 for (i = (EV_PID_HASHSIZE); i--; )
3356 for (wl = childs [i]; wl; ) 4552 for (wl = childs [i]; wl; )
3357 { 4553 {
3358 wn = wl->next; 4554 wn = wl->next;
3359 cb (EV_A_ EV_CHILD, wl); 4555 cb (EV_A_ EV_CHILD, wl);
3360 wl = wn; 4556 wl = wn;
3361 } 4557 }
4558#endif
3362/* EV_STAT 0x00001000 /* stat data changed */ 4559/* EV_STAT 0x00001000 /* stat data changed */
3363/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4560/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3364} 4561}
3365#endif 4562#endif
3366 4563
3367#if EV_MULTIPLICITY 4564#if EV_MULTIPLICITY
3368 #include "ev_wrap.h" 4565 #include "ev_wrap.h"
3369#endif 4566#endif
3370 4567
3371#ifdef __cplusplus
3372}
3373#endif
3374

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