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Comparing libev/ev.c (file contents):
Revision 1.291 by root, Mon Jun 29 04:44:18 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
1337#ifndef EV_HAVE_EV_TIME
569ev_tstamp 1338ev_tstamp
570ev_time (void) 1339ev_time (void) EV_THROW
571{ 1340{
572#if EV_USE_REALTIME 1341#if EV_USE_REALTIME
573 if (expect_true (have_realtime)) 1342 if (expect_true (have_realtime))
574 { 1343 {
575 struct timespec ts; 1344 struct timespec ts;
… …
580 1349
581 struct timeval tv; 1350 struct timeval tv;
582 gettimeofday (&tv, 0); 1351 gettimeofday (&tv, 0);
583 return tv.tv_sec + tv.tv_usec * 1e-6; 1352 return tv.tv_sec + tv.tv_usec * 1e-6;
584} 1353}
1354#endif
585 1355
586inline_size ev_tstamp 1356inline_size ev_tstamp
587get_clock (void) 1357get_clock (void)
588{ 1358{
589#if EV_USE_MONOTONIC 1359#if EV_USE_MONOTONIC
… …
598 return ev_time (); 1368 return ev_time ();
599} 1369}
600 1370
601#if EV_MULTIPLICITY 1371#if EV_MULTIPLICITY
602ev_tstamp 1372ev_tstamp
603ev_now (EV_P) 1373ev_now (EV_P) EV_THROW
604{ 1374{
605 return ev_rt_now; 1375 return ev_rt_now;
606} 1376}
607#endif 1377#endif
608 1378
609void 1379void
610ev_sleep (ev_tstamp delay) 1380ev_sleep (ev_tstamp delay) EV_THROW
611{ 1381{
612 if (delay > 0.) 1382 if (delay > 0.)
613 { 1383 {
614#if EV_USE_NANOSLEEP 1384#if EV_USE_NANOSLEEP
615 struct timespec ts; 1385 struct timespec ts;
616 1386
617 ts.tv_sec = (time_t)delay; 1387 EV_TS_SET (ts, delay);
618 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
619
620 nanosleep (&ts, 0); 1388 nanosleep (&ts, 0);
621#elif defined(_WIN32) 1389#elif defined _WIN32
622 Sleep ((unsigned long)(delay * 1e3)); 1390 Sleep ((unsigned long)(delay * 1e3));
623#else 1391#else
624 struct timeval tv; 1392 struct timeval tv;
625 1393
626 tv.tv_sec = (time_t)delay;
627 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
628
629 /* 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 */
630 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 1395 /* something not guaranteed by newer posix versions, but guaranteed */
631 /* by older ones */ 1396 /* by older ones */
1397 EV_TV_SET (tv, delay);
632 select (0, 0, 0, 0, &tv); 1398 select (0, 0, 0, 0, &tv);
633#endif 1399#endif
634 } 1400 }
635} 1401}
636 1402
637/*****************************************************************************/ 1403/*****************************************************************************/
638 1404
639#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 */
640 1406
641/* find a suitable new size for the given array, */ 1407/* find a suitable new size for the given array, */
642/* hopefully by rounding to a ncie-to-malloc size */ 1408/* hopefully by rounding to a nice-to-malloc size */
643inline_size int 1409inline_size int
644array_nextsize (int elem, int cur, int cnt) 1410array_nextsize (int elem, int cur, int cnt)
645{ 1411{
646 int ncur = cur + 1; 1412 int ncur = cur + 1;
647 1413
648 do 1414 do
649 ncur <<= 1; 1415 ncur <<= 1;
650 while (cnt > ncur); 1416 while (cnt > ncur);
651 1417
652 /* 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 */
653 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1419 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
654 { 1420 {
655 ncur *= elem; 1421 ncur *= elem;
656 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);
657 ncur = ncur - sizeof (void *) * 4; 1423 ncur = ncur - sizeof (void *) * 4;
… …
659 } 1425 }
660 1426
661 return ncur; 1427 return ncur;
662} 1428}
663 1429
664static noinline void * 1430static void * noinline ecb_cold
665array_realloc (int elem, void *base, int *cur, int cnt) 1431array_realloc (int elem, void *base, int *cur, int cnt)
666{ 1432{
667 *cur = array_nextsize (elem, *cur, cnt); 1433 *cur = array_nextsize (elem, *cur, cnt);
668 return ev_realloc (base, elem * *cur); 1434 return ev_realloc (base, elem * *cur);
669} 1435}
… …
672 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1438 memset ((void *)(base), 0, sizeof (*(base)) * (count))
673 1439
674#define array_needsize(type,base,cur,cnt,init) \ 1440#define array_needsize(type,base,cur,cnt,init) \
675 if (expect_false ((cnt) > (cur))) \ 1441 if (expect_false ((cnt) > (cur))) \
676 { \ 1442 { \
677 int ocur_ = (cur); \ 1443 int ecb_unused ocur_ = (cur); \
678 (base) = (type *)array_realloc \ 1444 (base) = (type *)array_realloc \
679 (sizeof (type), (base), &(cur), (cnt)); \ 1445 (sizeof (type), (base), &(cur), (cnt)); \
680 init ((base) + (ocur_), (cur) - ocur_); \ 1446 init ((base) + (ocur_), (cur) - ocur_); \
681 } 1447 }
682 1448
… …
700pendingcb (EV_P_ ev_prepare *w, int revents) 1466pendingcb (EV_P_ ev_prepare *w, int revents)
701{ 1467{
702} 1468}
703 1469
704void noinline 1470void noinline
705ev_feed_event (EV_P_ void *w, int revents) 1471ev_feed_event (EV_P_ void *w, int revents) EV_THROW
706{ 1472{
707 W w_ = (W)w; 1473 W w_ = (W)w;
708 int pri = ABSPRI (w_); 1474 int pri = ABSPRI (w_);
709 1475
710 if (expect_false (w_->pending)) 1476 if (expect_false (w_->pending))
… …
714 w_->pending = ++pendingcnt [pri]; 1480 w_->pending = ++pendingcnt [pri];
715 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1481 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
716 pendings [pri][w_->pending - 1].w = w_; 1482 pendings [pri][w_->pending - 1].w = w_;
717 pendings [pri][w_->pending - 1].events = revents; 1483 pendings [pri][w_->pending - 1].events = revents;
718 } 1484 }
1485
1486 pendingpri = NUMPRI - 1;
719} 1487}
720 1488
721inline_speed void 1489inline_speed void
722feed_reverse (EV_P_ W w) 1490feed_reverse (EV_P_ W w)
723{ 1491{
… …
743} 1511}
744 1512
745/*****************************************************************************/ 1513/*****************************************************************************/
746 1514
747inline_speed void 1515inline_speed void
748fd_event (EV_P_ int fd, int revents) 1516fd_event_nocheck (EV_P_ int fd, int revents)
749{ 1517{
750 ANFD *anfd = anfds + fd; 1518 ANFD *anfd = anfds + fd;
751 ev_io *w; 1519 ev_io *w;
752 1520
753 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)
… …
757 if (ev) 1525 if (ev)
758 ev_feed_event (EV_A_ (W)w, ev); 1526 ev_feed_event (EV_A_ (W)w, ev);
759 } 1527 }
760} 1528}
761 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
762void 1541void
763ev_feed_fd_event (EV_P_ int fd, int revents) 1542ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
764{ 1543{
765 if (fd >= 0 && fd < anfdmax) 1544 if (fd >= 0 && fd < anfdmax)
766 fd_event (EV_A_ fd, revents); 1545 fd_event_nocheck (EV_A_ fd, revents);
767} 1546}
768 1547
769/* make sure the external fd watch events are in-sync */ 1548/* make sure the external fd watch events are in-sync */
770/* with the kernel/libev internal state */ 1549/* with the kernel/libev internal state */
771inline_size void 1550inline_size void
772fd_reify (EV_P) 1551fd_reify (EV_P)
773{ 1552{
774 int i; 1553 int i;
775 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
776 for (i = 0; i < fdchangecnt; ++i) 1580 for (i = 0; i < fdchangecnt; ++i)
777 { 1581 {
778 int fd = fdchanges [i]; 1582 int fd = fdchanges [i];
779 ANFD *anfd = anfds + fd; 1583 ANFD *anfd = anfds + fd;
780 ev_io *w; 1584 ev_io *w;
781 1585
782 unsigned char events = 0; 1586 unsigned char o_events = anfd->events;
1587 unsigned char o_reify = anfd->reify;
783 1588
784 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1589 anfd->reify = 0;
785 events |= (unsigned char)w->events;
786 1590
787#if EV_SELECT_IS_WINSOCKET 1591 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
788 if (events)
789 { 1592 {
790 unsigned long arg; 1593 anfd->events = 0;
791 #ifdef EV_FD_TO_WIN32_HANDLE 1594
792 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1595 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
793 #else 1596 anfd->events |= (unsigned char)w->events;
794 anfd->handle = _get_osfhandle (fd); 1597
795 #endif 1598 if (o_events != anfd->events)
796 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1599 o_reify = EV__IOFDSET; /* actually |= */
797 } 1600 }
798#endif
799 1601
800 { 1602 if (o_reify & EV__IOFDSET)
801 unsigned char o_events = anfd->events;
802 unsigned char o_reify = anfd->reify;
803
804 anfd->reify = 0;
805 anfd->events = events;
806
807 if (o_events != events || o_reify & EV__IOFDSET)
808 backend_modify (EV_A_ fd, o_events, events); 1603 backend_modify (EV_A_ fd, o_events, anfd->events);
809 }
810 } 1604 }
811 1605
812 fdchangecnt = 0; 1606 fdchangecnt = 0;
813} 1607}
814 1608
… …
826 fdchanges [fdchangecnt - 1] = fd; 1620 fdchanges [fdchangecnt - 1] = fd;
827 } 1621 }
828} 1622}
829 1623
830/* 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 */
831inline_speed void 1625inline_speed void ecb_cold
832fd_kill (EV_P_ int fd) 1626fd_kill (EV_P_ int fd)
833{ 1627{
834 ev_io *w; 1628 ev_io *w;
835 1629
836 while ((w = (ev_io *)anfds [fd].head)) 1630 while ((w = (ev_io *)anfds [fd].head))
… …
838 ev_io_stop (EV_A_ w); 1632 ev_io_stop (EV_A_ w);
839 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);
840 } 1634 }
841} 1635}
842 1636
843/* check whether the given fd is atcually valid, for error recovery */ 1637/* check whether the given fd is actually valid, for error recovery */
844inline_size int 1638inline_size int ecb_cold
845fd_valid (int fd) 1639fd_valid (int fd)
846{ 1640{
847#ifdef _WIN32 1641#ifdef _WIN32
848 return _get_osfhandle (fd) != -1; 1642 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
849#else 1643#else
850 return fcntl (fd, F_GETFD) != -1; 1644 return fcntl (fd, F_GETFD) != -1;
851#endif 1645#endif
852} 1646}
853 1647
854/* called on EBADF to verify fds */ 1648/* called on EBADF to verify fds */
855static void noinline 1649static void noinline ecb_cold
856fd_ebadf (EV_P) 1650fd_ebadf (EV_P)
857{ 1651{
858 int fd; 1652 int fd;
859 1653
860 for (fd = 0; fd < anfdmax; ++fd) 1654 for (fd = 0; fd < anfdmax; ++fd)
… …
862 if (!fd_valid (fd) && errno == EBADF) 1656 if (!fd_valid (fd) && errno == EBADF)
863 fd_kill (EV_A_ fd); 1657 fd_kill (EV_A_ fd);
864} 1658}
865 1659
866/* 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 */
867static void noinline 1661static void noinline ecb_cold
868fd_enomem (EV_P) 1662fd_enomem (EV_P)
869{ 1663{
870 int fd; 1664 int fd;
871 1665
872 for (fd = anfdmax; fd--; ) 1666 for (fd = anfdmax; fd--; )
873 if (anfds [fd].events) 1667 if (anfds [fd].events)
874 { 1668 {
875 fd_kill (EV_A_ fd); 1669 fd_kill (EV_A_ fd);
876 return; 1670 break;
877 } 1671 }
878} 1672}
879 1673
880/* 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 */
881static void noinline 1675static void noinline
… …
886 for (fd = 0; fd < anfdmax; ++fd) 1680 for (fd = 0; fd < anfdmax; ++fd)
887 if (anfds [fd].events) 1681 if (anfds [fd].events)
888 { 1682 {
889 anfds [fd].events = 0; 1683 anfds [fd].events = 0;
890 anfds [fd].emask = 0; 1684 anfds [fd].emask = 0;
891 fd_change (EV_A_ fd, EV__IOFDSET | 1); 1685 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
892 } 1686 }
893} 1687}
894 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
895/*****************************************************************************/ 1703/*****************************************************************************/
896 1704
897/* 1705/*
898 * 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
899 * 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
900 * the branching factor of the d-tree. 1708 * the branching factor of the d-tree.
901 */ 1709 */
902 1710
903/* 1711/*
… …
971 1779
972 for (;;) 1780 for (;;)
973 { 1781 {
974 int c = k << 1; 1782 int c = k << 1;
975 1783
976 if (c > N + HEAP0 - 1) 1784 if (c >= N + HEAP0)
977 break; 1785 break;
978 1786
979 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])
980 ? 1 : 0; 1788 ? 1 : 0;
981 1789
… …
1017 1825
1018/* move an element suitably so it is in a correct place */ 1826/* move an element suitably so it is in a correct place */
1019inline_size void 1827inline_size void
1020adjustheap (ANHE *heap, int N, int k) 1828adjustheap (ANHE *heap, int N, int k)
1021{ 1829{
1022 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)]))
1023 upheap (heap, k); 1831 upheap (heap, k);
1024 else 1832 else
1025 downheap (heap, N, k); 1833 downheap (heap, N, k);
1026} 1834}
1027 1835
… …
1040/*****************************************************************************/ 1848/*****************************************************************************/
1041 1849
1042/* associate signal watchers to a signal signal */ 1850/* associate signal watchers to a signal signal */
1043typedef struct 1851typedef struct
1044{ 1852{
1853 EV_ATOMIC_T pending;
1854#if EV_MULTIPLICITY
1855 EV_P;
1856#endif
1045 WL head; 1857 WL head;
1046 EV_ATOMIC_T gotsig;
1047} ANSIG; 1858} ANSIG;
1048 1859
1049static ANSIG *signals; 1860static ANSIG signals [EV_NSIG - 1];
1050static int signalmax;
1051
1052static EV_ATOMIC_T gotsig;
1053 1861
1054/*****************************************************************************/ 1862/*****************************************************************************/
1055 1863
1056/* used to prepare libev internal fd's */ 1864#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1057/* this is not fork-safe */
1058inline_speed void
1059fd_intern (int fd)
1060{
1061#ifdef _WIN32
1062 unsigned long arg = 1;
1063 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1064#else
1065 fcntl (fd, F_SETFD, FD_CLOEXEC);
1066 fcntl (fd, F_SETFL, O_NONBLOCK);
1067#endif
1068}
1069 1865
1070static void noinline 1866static void noinline ecb_cold
1071evpipe_init (EV_P) 1867evpipe_init (EV_P)
1072{ 1868{
1073 if (!ev_is_active (&pipe_w)) 1869 if (!ev_is_active (&pipe_w))
1074 { 1870 {
1075#if EV_USE_EVENTFD 1871# if EV_USE_EVENTFD
1872 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1873 if (evfd < 0 && errno == EINVAL)
1076 if ((evfd = eventfd (0, 0)) >= 0) 1874 evfd = eventfd (0, 0);
1875
1876 if (evfd >= 0)
1077 { 1877 {
1078 evpipe [0] = -1; 1878 evpipe [0] = -1;
1079 fd_intern (evfd); 1879 fd_intern (evfd); /* doing it twice doesn't hurt */
1080 ev_io_set (&pipe_w, evfd, EV_READ); 1880 ev_io_set (&pipe_w, evfd, EV_READ);
1081 } 1881 }
1082 else 1882 else
1083#endif 1883# endif
1084 { 1884 {
1085 while (pipe (evpipe)) 1885 while (pipe (evpipe))
1086 ev_syserr ("(libev) error creating signal/async pipe"); 1886 ev_syserr ("(libev) error creating signal/async pipe");
1087 1887
1088 fd_intern (evpipe [0]); 1888 fd_intern (evpipe [0]);
… …
1093 ev_io_start (EV_A_ &pipe_w); 1893 ev_io_start (EV_A_ &pipe_w);
1094 ev_unref (EV_A); /* watcher should not keep loop alive */ 1894 ev_unref (EV_A); /* watcher should not keep loop alive */
1095 } 1895 }
1096} 1896}
1097 1897
1098inline_size void 1898inline_speed void
1099evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1899evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1100{ 1900{
1101 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)
1102 { 1914 {
1915 int old_errno;
1916
1917 pipe_write_skipped = 0;
1918 ECB_MEMORY_FENCE_RELEASE;
1919
1103 int old_errno = errno; /* save errno because write might clobber it */ 1920 old_errno = errno; /* save errno because write will clobber it */
1104
1105 *flag = 1;
1106 1921
1107#if EV_USE_EVENTFD 1922#if EV_USE_EVENTFD
1108 if (evfd >= 0) 1923 if (evfd >= 0)
1109 { 1924 {
1110 uint64_t counter = 1; 1925 uint64_t counter = 1;
1111 write (evfd, &counter, sizeof (uint64_t)); 1926 write (evfd, &counter, sizeof (uint64_t));
1112 } 1927 }
1113 else 1928 else
1114#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
1115 write (evpipe [1], &old_errno, 1); 1938 write (evpipe [1], &(evpipe [1]), 1);
1939#endif
1940 }
1116 1941
1117 errno = old_errno; 1942 errno = old_errno;
1118 } 1943 }
1119} 1944}
1120 1945
1121/* called whenever the libev signal pipe */ 1946/* called whenever the libev signal pipe */
1122/* got some events (signal, async) */ 1947/* got some events (signal, async) */
1123static void 1948static void
1124pipecb (EV_P_ ev_io *iow, int revents) 1949pipecb (EV_P_ ev_io *iow, int revents)
1125{ 1950{
1951 int i;
1952
1953 if (revents & EV_READ)
1954 {
1126#if EV_USE_EVENTFD 1955#if EV_USE_EVENTFD
1127 if (evfd >= 0) 1956 if (evfd >= 0)
1128 { 1957 {
1129 uint64_t counter; 1958 uint64_t counter;
1130 read (evfd, &counter, sizeof (uint64_t)); 1959 read (evfd, &counter, sizeof (uint64_t));
1131 } 1960 }
1132 else 1961 else
1133#endif 1962#endif
1134 { 1963 {
1135 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
1136 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)
1137 } 1984 {
1985 sig_pending = 0;
1138 1986
1139 if (gotsig && ev_is_default_loop (EV_A)) 1987 ECB_MEMORY_FENCE;
1140 {
1141 int signum;
1142 gotsig = 0;
1143 1988
1144 for (signum = signalmax; signum--; ) 1989 for (i = EV_NSIG - 1; i--; )
1145 if (signals [signum].gotsig) 1990 if (expect_false (signals [i].pending))
1146 ev_feed_signal_event (EV_A_ signum + 1); 1991 ev_feed_signal_event (EV_A_ i + 1);
1147 } 1992 }
1993#endif
1148 1994
1149#if EV_ASYNC_ENABLE 1995#if EV_ASYNC_ENABLE
1150 if (gotasync) 1996 if (async_pending)
1151 { 1997 {
1152 int i; 1998 async_pending = 0;
1153 gotasync = 0; 1999
2000 ECB_MEMORY_FENCE;
1154 2001
1155 for (i = asynccnt; i--; ) 2002 for (i = asynccnt; i--; )
1156 if (asyncs [i]->sent) 2003 if (asyncs [i]->sent)
1157 { 2004 {
1158 asyncs [i]->sent = 0; 2005 asyncs [i]->sent = 0;
2006 ECB_MEMORY_FENCE_RELEASE;
1159 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2007 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1160 } 2008 }
1161 } 2009 }
1162#endif 2010#endif
1163} 2011}
1164 2012
1165/*****************************************************************************/ 2013/*****************************************************************************/
1166 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
1167static void 2032static void
1168ev_sighandler (int signum) 2033ev_sighandler (int signum)
1169{ 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
1170#if EV_MULTIPLICITY 2052#if EV_MULTIPLICITY
1171 struct ev_loop *loop = &default_loop_struct; 2053 /* it is permissible to try to feed a signal to the wrong loop */
1172#endif 2054 /* or, likely more useful, feeding a signal nobody is waiting for */
1173 2055
1174#if _WIN32 2056 if (expect_false (signals [signum].loop != EV_A))
1175 signal (signum, ev_sighandler);
1176#endif
1177
1178 signals [signum - 1].gotsig = 1;
1179 evpipe_write (EV_A_ &gotsig);
1180}
1181
1182void noinline
1183ev_feed_signal_event (EV_P_ int signum)
1184{
1185 WL w;
1186
1187#if EV_MULTIPLICITY
1188 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1189#endif
1190
1191 --signum;
1192
1193 if (signum < 0 || signum >= signalmax)
1194 return; 2057 return;
2058#endif
1195 2059
1196 signals [signum].gotsig = 0; 2060 signals [signum].pending = 0;
2061 ECB_MEMORY_FENCE_RELEASE;
1197 2062
1198 for (w = signals [signum].head; w; w = w->next) 2063 for (w = signals [signum].head; w; w = w->next)
1199 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2064 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1200} 2065}
1201 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
1202/*****************************************************************************/ 2089/*****************************************************************************/
1203 2090
2091#if EV_CHILD_ENABLE
1204static WL childs [EV_PID_HASHSIZE]; 2092static WL childs [EV_PID_HASHSIZE];
1205
1206#ifndef _WIN32
1207 2093
1208static ev_signal childev; 2094static ev_signal childev;
1209 2095
1210#ifndef WIFCONTINUED 2096#ifndef WIFCONTINUED
1211# define WIFCONTINUED(status) 0 2097# define WIFCONTINUED(status) 0
… …
1216child_reap (EV_P_ int chain, int pid, int status) 2102child_reap (EV_P_ int chain, int pid, int status)
1217{ 2103{
1218 ev_child *w; 2104 ev_child *w;
1219 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2105 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1220 2106
1221 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)
1222 { 2108 {
1223 if ((w->pid == pid || !w->pid) 2109 if ((w->pid == pid || !w->pid)
1224 && (!traced || (w->flags & 1))) 2110 && (!traced || (w->flags & 1)))
1225 { 2111 {
1226 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 */
… …
1251 /* 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 */
1252 /* 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 */
1253 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2139 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1254 2140
1255 child_reap (EV_A_ pid, pid, status); 2141 child_reap (EV_A_ pid, pid, status);
1256 if (EV_PID_HASHSIZE > 1) 2142 if ((EV_PID_HASHSIZE) > 1)
1257 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 */
1258} 2144}
1259 2145
1260#endif 2146#endif
1261 2147
1262/*****************************************************************************/ 2148/*****************************************************************************/
1263 2149
2150#if EV_USE_IOCP
2151# include "ev_iocp.c"
2152#endif
1264#if EV_USE_PORT 2153#if EV_USE_PORT
1265# include "ev_port.c" 2154# include "ev_port.c"
1266#endif 2155#endif
1267#if EV_USE_KQUEUE 2156#if EV_USE_KQUEUE
1268# include "ev_kqueue.c" 2157# include "ev_kqueue.c"
… …
1275#endif 2164#endif
1276#if EV_USE_SELECT 2165#if EV_USE_SELECT
1277# include "ev_select.c" 2166# include "ev_select.c"
1278#endif 2167#endif
1279 2168
1280int 2169int ecb_cold
1281ev_version_major (void) 2170ev_version_major (void) EV_THROW
1282{ 2171{
1283 return EV_VERSION_MAJOR; 2172 return EV_VERSION_MAJOR;
1284} 2173}
1285 2174
1286int 2175int ecb_cold
1287ev_version_minor (void) 2176ev_version_minor (void) EV_THROW
1288{ 2177{
1289 return EV_VERSION_MINOR; 2178 return EV_VERSION_MINOR;
1290} 2179}
1291 2180
1292/* 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 */
1293int inline_size 2182int inline_size ecb_cold
1294enable_secure (void) 2183enable_secure (void)
1295{ 2184{
1296#ifdef _WIN32 2185#ifdef _WIN32
1297 return 0; 2186 return 0;
1298#else 2187#else
1299 return getuid () != geteuid () 2188 return getuid () != geteuid ()
1300 || getgid () != getegid (); 2189 || getgid () != getegid ();
1301#endif 2190#endif
1302} 2191}
1303 2192
1304unsigned int 2193unsigned int ecb_cold
1305ev_supported_backends (void) 2194ev_supported_backends (void) EV_THROW
1306{ 2195{
1307 unsigned int flags = 0; 2196 unsigned int flags = 0;
1308 2197
1309 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2198 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1310 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2199 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1313 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2202 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1314 2203
1315 return flags; 2204 return flags;
1316} 2205}
1317 2206
1318unsigned int 2207unsigned int ecb_cold
1319ev_recommended_backends (void) 2208ev_recommended_backends (void) EV_THROW
1320{ 2209{
1321 unsigned int flags = ev_supported_backends (); 2210 unsigned int flags = ev_supported_backends ();
1322 2211
1323#ifndef __NetBSD__ 2212#ifndef __NetBSD__
1324 /* kqueue is borked on everything but netbsd apparently */ 2213 /* kqueue is borked on everything but netbsd apparently */
… …
1328#ifdef __APPLE__ 2217#ifdef __APPLE__
1329 /* only select works correctly on that "unix-certified" platform */ 2218 /* only select works correctly on that "unix-certified" platform */
1330 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2219 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1331 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 */
1332#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
1333 2225
1334 return flags; 2226 return flags;
1335} 2227}
1336 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
1337unsigned int 2241unsigned int
1338ev_embeddable_backends (void) 2242ev_backend (EV_P) EV_THROW
1339{ 2243{
1340 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2244 return backend;
1341
1342 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1343 /* please fix it and tell me how to detect the fix */
1344 flags &= ~EVBACKEND_EPOLL;
1345
1346 return flags;
1347} 2245}
1348 2246
2247#if EV_FEATURE_API
1349unsigned int 2248unsigned int
1350ev_backend (EV_P) 2249ev_iteration (EV_P) EV_THROW
1351{ 2250{
1352 return backend; 2251 return loop_count;
1353} 2252}
1354 2253
1355unsigned int 2254unsigned int
1356ev_loop_count (EV_P) 2255ev_depth (EV_P) EV_THROW
1357{ 2256{
1358 return loop_count; 2257 return loop_depth;
1359} 2258}
1360 2259
1361void 2260void
1362ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2261ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1363{ 2262{
1364 io_blocktime = interval; 2263 io_blocktime = interval;
1365} 2264}
1366 2265
1367void 2266void
1368ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2267ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1369{ 2268{
1370 timeout_blocktime = interval; 2269 timeout_blocktime = interval;
1371} 2270}
1372 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
1373/* initialise a loop structure, must be zero-initialised */ 2298/* initialise a loop structure, must be zero-initialised */
1374static void noinline 2299static void noinline ecb_cold
1375loop_init (EV_P_ unsigned int flags) 2300loop_init (EV_P_ unsigned int flags) EV_THROW
1376{ 2301{
1377 if (!backend) 2302 if (!backend)
1378 { 2303 {
2304 origflags = flags;
2305
1379#if EV_USE_REALTIME 2306#if EV_USE_REALTIME
1380 if (!have_realtime) 2307 if (!have_realtime)
1381 { 2308 {
1382 struct timespec ts; 2309 struct timespec ts;
1383 2310
… …
1394 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2321 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1395 have_monotonic = 1; 2322 have_monotonic = 1;
1396 } 2323 }
1397#endif 2324#endif
1398 2325
1399 ev_rt_now = ev_time ();
1400 mn_now = get_clock ();
1401 now_floor = mn_now;
1402 rtmn_diff = ev_rt_now - mn_now;
1403
1404 io_blocktime = 0.;
1405 timeout_blocktime = 0.;
1406 backend = 0;
1407 backend_fd = -1;
1408 gotasync = 0;
1409#if EV_USE_INOTIFY
1410 fs_fd = -2;
1411#endif
1412
1413 /* pid check not overridable via env */ 2326 /* pid check not overridable via env */
1414#ifndef _WIN32 2327#ifndef _WIN32
1415 if (flags & EVFLAG_FORKCHECK) 2328 if (flags & EVFLAG_FORKCHECK)
1416 curpid = getpid (); 2329 curpid = getpid ();
1417#endif 2330#endif
… …
1419 if (!(flags & EVFLAG_NOENV) 2332 if (!(flags & EVFLAG_NOENV)
1420 && !enable_secure () 2333 && !enable_secure ()
1421 && getenv ("LIBEV_FLAGS")) 2334 && getenv ("LIBEV_FLAGS"))
1422 flags = atoi (getenv ("LIBEV_FLAGS")); 2335 flags = atoi (getenv ("LIBEV_FLAGS"));
1423 2336
1424 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))
1425 flags |= ev_recommended_backends (); 2363 flags |= ev_recommended_backends ();
1426 2364
2365#if EV_USE_IOCP
2366 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2367#endif
1427#if EV_USE_PORT 2368#if EV_USE_PORT
1428 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2369 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1429#endif 2370#endif
1430#if EV_USE_KQUEUE 2371#if EV_USE_KQUEUE
1431 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2372 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1440 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2381 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1441#endif 2382#endif
1442 2383
1443 ev_prepare_init (&pending_w, pendingcb); 2384 ev_prepare_init (&pending_w, pendingcb);
1444 2385
2386#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1445 ev_init (&pipe_w, pipecb); 2387 ev_init (&pipe_w, pipecb);
1446 ev_set_priority (&pipe_w, EV_MAXPRI); 2388 ev_set_priority (&pipe_w, EV_MAXPRI);
2389#endif
1447 } 2390 }
1448} 2391}
1449 2392
1450/* free up a loop structure */ 2393/* free up a loop structure */
1451static void noinline 2394void ecb_cold
1452loop_destroy (EV_P) 2395ev_loop_destroy (EV_P)
1453{ 2396{
1454 int i; 2397 int i;
1455 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
1456 if (ev_is_active (&pipe_w)) 2422 if (ev_is_active (&pipe_w))
1457 { 2423 {
1458 ev_ref (EV_A); /* signal watcher */ 2424 /*ev_ref (EV_A);*/
1459 ev_io_stop (EV_A_ &pipe_w); 2425 /*ev_io_stop (EV_A_ &pipe_w);*/
1460 2426
1461#if EV_USE_EVENTFD 2427#if EV_USE_EVENTFD
1462 if (evfd >= 0) 2428 if (evfd >= 0)
1463 close (evfd); 2429 close (evfd);
1464#endif 2430#endif
1465 2431
1466 if (evpipe [0] >= 0) 2432 if (evpipe [0] >= 0)
1467 { 2433 {
1468 close (evpipe [0]); 2434 EV_WIN32_CLOSE_FD (evpipe [0]);
1469 close (evpipe [1]); 2435 EV_WIN32_CLOSE_FD (evpipe [1]);
1470 } 2436 }
1471 } 2437 }
2438
2439#if EV_USE_SIGNALFD
2440 if (ev_is_active (&sigfd_w))
2441 close (sigfd);
2442#endif
1472 2443
1473#if EV_USE_INOTIFY 2444#if EV_USE_INOTIFY
1474 if (fs_fd >= 0) 2445 if (fs_fd >= 0)
1475 close (fs_fd); 2446 close (fs_fd);
1476#endif 2447#endif
1477 2448
1478 if (backend_fd >= 0) 2449 if (backend_fd >= 0)
1479 close (backend_fd); 2450 close (backend_fd);
1480 2451
2452#if EV_USE_IOCP
2453 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2454#endif
1481#if EV_USE_PORT 2455#if EV_USE_PORT
1482 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2456 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1483#endif 2457#endif
1484#if EV_USE_KQUEUE 2458#if EV_USE_KQUEUE
1485 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2459 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1500#if EV_IDLE_ENABLE 2474#if EV_IDLE_ENABLE
1501 array_free (idle, [i]); 2475 array_free (idle, [i]);
1502#endif 2476#endif
1503 } 2477 }
1504 2478
1505 ev_free (anfds); anfdmax = 0; 2479 ev_free (anfds); anfds = 0; anfdmax = 0;
1506 2480
1507 /* have to use the microsoft-never-gets-it-right macro */ 2481 /* have to use the microsoft-never-gets-it-right macro */
1508 array_free (rfeed, EMPTY); 2482 array_free (rfeed, EMPTY);
1509 array_free (fdchange, EMPTY); 2483 array_free (fdchange, EMPTY);
1510 array_free (timer, EMPTY); 2484 array_free (timer, EMPTY);
… …
1512 array_free (periodic, EMPTY); 2486 array_free (periodic, EMPTY);
1513#endif 2487#endif
1514#if EV_FORK_ENABLE 2488#if EV_FORK_ENABLE
1515 array_free (fork, EMPTY); 2489 array_free (fork, EMPTY);
1516#endif 2490#endif
2491#if EV_CLEANUP_ENABLE
2492 array_free (cleanup, EMPTY);
2493#endif
1517 array_free (prepare, EMPTY); 2494 array_free (prepare, EMPTY);
1518 array_free (check, EMPTY); 2495 array_free (check, EMPTY);
1519#if EV_ASYNC_ENABLE 2496#if EV_ASYNC_ENABLE
1520 array_free (async, EMPTY); 2497 array_free (async, EMPTY);
1521#endif 2498#endif
1522 2499
1523 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
1524} 2510}
1525 2511
1526#if EV_USE_INOTIFY 2512#if EV_USE_INOTIFY
1527inline_size void infy_fork (EV_P); 2513inline_size void infy_fork (EV_P);
1528#endif 2514#endif
… …
1543 infy_fork (EV_A); 2529 infy_fork (EV_A);
1544#endif 2530#endif
1545 2531
1546 if (ev_is_active (&pipe_w)) 2532 if (ev_is_active (&pipe_w))
1547 { 2533 {
1548 /* this "locks" the handlers against writing to the pipe */ 2534 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1549 /* while we modify the fd vars */
1550 gotsig = 1;
1551#if EV_ASYNC_ENABLE
1552 gotasync = 1;
1553#endif
1554 2535
1555 ev_ref (EV_A); 2536 ev_ref (EV_A);
1556 ev_io_stop (EV_A_ &pipe_w); 2537 ev_io_stop (EV_A_ &pipe_w);
1557 2538
1558#if EV_USE_EVENTFD 2539#if EV_USE_EVENTFD
… …
1560 close (evfd); 2541 close (evfd);
1561#endif 2542#endif
1562 2543
1563 if (evpipe [0] >= 0) 2544 if (evpipe [0] >= 0)
1564 { 2545 {
1565 close (evpipe [0]); 2546 EV_WIN32_CLOSE_FD (evpipe [0]);
1566 close (evpipe [1]); 2547 EV_WIN32_CLOSE_FD (evpipe [1]);
1567 } 2548 }
1568 2549
2550#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1569 evpipe_init (EV_A); 2551 evpipe_init (EV_A);
1570 /* now iterate over everything, in case we missed something */ 2552 /* now iterate over everything, in case we missed something */
1571 pipecb (EV_A_ &pipe_w, EV_READ); 2553 pipecb (EV_A_ &pipe_w, EV_READ);
2554#endif
1572 } 2555 }
1573 2556
1574 postfork = 0; 2557 postfork = 0;
1575} 2558}
1576 2559
1577#if EV_MULTIPLICITY 2560#if EV_MULTIPLICITY
1578 2561
1579struct ev_loop * 2562struct ev_loop * ecb_cold
1580ev_loop_new (unsigned int flags) 2563ev_loop_new (unsigned int flags) EV_THROW
1581{ 2564{
1582 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));
1583 2566
1584 memset (loop, 0, sizeof (struct ev_loop)); 2567 memset (EV_A, 0, sizeof (struct ev_loop));
1585
1586 loop_init (EV_A_ flags); 2568 loop_init (EV_A_ flags);
1587 2569
1588 if (ev_backend (EV_A)) 2570 if (ev_backend (EV_A))
1589 return loop; 2571 return EV_A;
1590 2572
2573 ev_free (EV_A);
1591 return 0; 2574 return 0;
1592} 2575}
1593 2576
1594void 2577#endif /* multiplicity */
1595ev_loop_destroy (EV_P)
1596{
1597 loop_destroy (EV_A);
1598 ev_free (loop);
1599}
1600
1601void
1602ev_loop_fork (EV_P)
1603{
1604 postfork = 1; /* must be in line with ev_default_fork */
1605}
1606 2578
1607#if EV_VERIFY 2579#if EV_VERIFY
1608static void noinline 2580static void noinline ecb_cold
1609verify_watcher (EV_P_ W w) 2581verify_watcher (EV_P_ W w)
1610{ 2582{
1611 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));
1612 2584
1613 if (w->pending) 2585 if (w->pending)
1614 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));
1615} 2587}
1616 2588
1617static void noinline 2589static void noinline ecb_cold
1618verify_heap (EV_P_ ANHE *heap, int N) 2590verify_heap (EV_P_ ANHE *heap, int N)
1619{ 2591{
1620 int i; 2592 int i;
1621 2593
1622 for (i = HEAP0; i < N + HEAP0; ++i) 2594 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1627 2599
1628 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2600 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1629 } 2601 }
1630} 2602}
1631 2603
1632static void noinline 2604static void noinline ecb_cold
1633array_verify (EV_P_ W *ws, int cnt) 2605array_verify (EV_P_ W *ws, int cnt)
1634{ 2606{
1635 while (cnt--) 2607 while (cnt--)
1636 { 2608 {
1637 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2609 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1638 verify_watcher (EV_A_ ws [cnt]); 2610 verify_watcher (EV_A_ ws [cnt]);
1639 } 2611 }
1640} 2612}
1641#endif 2613#endif
1642 2614
1643void 2615#if EV_FEATURE_API
1644ev_loop_verify (EV_P) 2616void ecb_cold
2617ev_verify (EV_P) EV_THROW
1645{ 2618{
1646#if EV_VERIFY 2619#if EV_VERIFY
1647 int i; 2620 int i;
1648 WL w; 2621 WL w, w2;
1649 2622
1650 assert (activecnt >= -1); 2623 assert (activecnt >= -1);
1651 2624
1652 assert (fdchangemax >= fdchangecnt); 2625 assert (fdchangemax >= fdchangecnt);
1653 for (i = 0; i < fdchangecnt; ++i) 2626 for (i = 0; i < fdchangecnt; ++i)
1654 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2627 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1655 2628
1656 assert (anfdmax >= 0); 2629 assert (anfdmax >= 0);
1657 for (i = 0; i < anfdmax; ++i) 2630 for (i = 0; i < anfdmax; ++i)
2631 {
2632 int j = 0;
2633
1658 for (w = anfds [i].head; w; w = w->next) 2634 for (w = w2 = anfds [i].head; w; w = w->next)
1659 { 2635 {
1660 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
1661 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));
1662 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));
1663 } 2646 }
2647 }
1664 2648
1665 assert (timermax >= timercnt); 2649 assert (timermax >= timercnt);
1666 verify_heap (EV_A_ timers, timercnt); 2650 verify_heap (EV_A_ timers, timercnt);
1667 2651
1668#if EV_PERIODIC_ENABLE 2652#if EV_PERIODIC_ENABLE
… …
1683#if EV_FORK_ENABLE 2667#if EV_FORK_ENABLE
1684 assert (forkmax >= forkcnt); 2668 assert (forkmax >= forkcnt);
1685 array_verify (EV_A_ (W *)forks, forkcnt); 2669 array_verify (EV_A_ (W *)forks, forkcnt);
1686#endif 2670#endif
1687 2671
2672#if EV_CLEANUP_ENABLE
2673 assert (cleanupmax >= cleanupcnt);
2674 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2675#endif
2676
1688#if EV_ASYNC_ENABLE 2677#if EV_ASYNC_ENABLE
1689 assert (asyncmax >= asynccnt); 2678 assert (asyncmax >= asynccnt);
1690 array_verify (EV_A_ (W *)asyncs, asynccnt); 2679 array_verify (EV_A_ (W *)asyncs, asynccnt);
1691#endif 2680#endif
1692 2681
2682#if EV_PREPARE_ENABLE
1693 assert (preparemax >= preparecnt); 2683 assert (preparemax >= preparecnt);
1694 array_verify (EV_A_ (W *)prepares, preparecnt); 2684 array_verify (EV_A_ (W *)prepares, preparecnt);
2685#endif
1695 2686
2687#if EV_CHECK_ENABLE
1696 assert (checkmax >= checkcnt); 2688 assert (checkmax >= checkcnt);
1697 array_verify (EV_A_ (W *)checks, checkcnt); 2689 array_verify (EV_A_ (W *)checks, checkcnt);
2690#endif
1698 2691
1699# if 0 2692# if 0
2693#if EV_CHILD_ENABLE
1700 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)
1701 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2695 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2696#endif
1702# endif 2697# endif
1703#endif 2698#endif
1704} 2699}
1705 2700#endif
1706#endif /* multiplicity */
1707 2701
1708#if EV_MULTIPLICITY 2702#if EV_MULTIPLICITY
1709struct ev_loop * 2703struct ev_loop * ecb_cold
1710ev_default_loop_init (unsigned int flags)
1711#else 2704#else
1712int 2705int
2706#endif
1713ev_default_loop (unsigned int flags) 2707ev_default_loop (unsigned int flags) EV_THROW
1714#endif
1715{ 2708{
1716 if (!ev_default_loop_ptr) 2709 if (!ev_default_loop_ptr)
1717 { 2710 {
1718#if EV_MULTIPLICITY 2711#if EV_MULTIPLICITY
1719 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2712 EV_P = ev_default_loop_ptr = &default_loop_struct;
1720#else 2713#else
1721 ev_default_loop_ptr = 1; 2714 ev_default_loop_ptr = 1;
1722#endif 2715#endif
1723 2716
1724 loop_init (EV_A_ flags); 2717 loop_init (EV_A_ flags);
1725 2718
1726 if (ev_backend (EV_A)) 2719 if (ev_backend (EV_A))
1727 { 2720 {
1728#ifndef _WIN32 2721#if EV_CHILD_ENABLE
1729 ev_signal_init (&childev, childcb, SIGCHLD); 2722 ev_signal_init (&childev, childcb, SIGCHLD);
1730 ev_set_priority (&childev, EV_MAXPRI); 2723 ev_set_priority (&childev, EV_MAXPRI);
1731 ev_signal_start (EV_A_ &childev); 2724 ev_signal_start (EV_A_ &childev);
1732 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2725 ev_unref (EV_A); /* child watcher should not keep loop alive */
1733#endif 2726#endif
… …
1738 2731
1739 return ev_default_loop_ptr; 2732 return ev_default_loop_ptr;
1740} 2733}
1741 2734
1742void 2735void
1743ev_default_destroy (void) 2736ev_loop_fork (EV_P) EV_THROW
1744{ 2737{
1745#if EV_MULTIPLICITY 2738 postfork = 1;
1746 struct ev_loop *loop = ev_default_loop_ptr;
1747#endif
1748
1749 ev_default_loop_ptr = 0;
1750
1751#ifndef _WIN32
1752 ev_ref (EV_A); /* child watcher */
1753 ev_signal_stop (EV_A_ &childev);
1754#endif
1755
1756 loop_destroy (EV_A);
1757}
1758
1759void
1760ev_default_fork (void)
1761{
1762#if EV_MULTIPLICITY
1763 struct ev_loop *loop = ev_default_loop_ptr;
1764#endif
1765
1766 postfork = 1; /* must be in line with ev_loop_fork */
1767} 2739}
1768 2740
1769/*****************************************************************************/ 2741/*****************************************************************************/
1770 2742
1771void 2743void
1772ev_invoke (EV_P_ void *w, int revents) 2744ev_invoke (EV_P_ void *w, int revents)
1773{ 2745{
1774 EV_CB_INVOKE ((W)w, revents); 2746 EV_CB_INVOKE ((W)w, revents);
1775} 2747}
1776 2748
1777inline_speed void 2749unsigned int
1778call_pending (EV_P) 2750ev_pending_count (EV_P) EV_THROW
1779{ 2751{
1780 int pri; 2752 int pri;
2753 unsigned int count = 0;
1781 2754
1782 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 */
1783 while (pendingcnt [pri]) 2765 while (pendingcnt [pendingpri])
1784 { 2766 {
1785 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2767 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1786
1787 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1788 /* ^ this is no longer true, as pending_w could be here */
1789 2768
1790 p->w->pending = 0; 2769 p->w->pending = 0;
1791 EV_CB_INVOKE (p->w, p->events); 2770 EV_CB_INVOKE (p->w, p->events);
1792 EV_FREQUENT_CHECK; 2771 EV_FREQUENT_CHECK;
1793 } 2772 }
… …
1850 EV_FREQUENT_CHECK; 2829 EV_FREQUENT_CHECK;
1851 feed_reverse (EV_A_ (W)w); 2830 feed_reverse (EV_A_ (W)w);
1852 } 2831 }
1853 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2832 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1854 2833
1855 feed_reverse_done (EV_A_ EV_TIMEOUT); 2834 feed_reverse_done (EV_A_ EV_TIMER);
1856 } 2835 }
1857} 2836}
1858 2837
1859#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
1860/* make periodics pending */ 2864/* make periodics pending */
1861inline_size void 2865inline_size void
1862periodics_reify (EV_P) 2866periodics_reify (EV_P)
1863{ 2867{
1864 EV_FREQUENT_CHECK; 2868 EV_FREQUENT_CHECK;
1865 2869
1866 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2870 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1867 { 2871 {
1868 int feed_count = 0;
1869
1870 do 2872 do
1871 { 2873 {
1872 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2874 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1873 2875
1874 /*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)));*/
… …
1883 ANHE_at_cache (periodics [HEAP0]); 2885 ANHE_at_cache (periodics [HEAP0]);
1884 downheap (periodics, periodiccnt, HEAP0); 2886 downheap (periodics, periodiccnt, HEAP0);
1885 } 2887 }
1886 else if (w->interval) 2888 else if (w->interval)
1887 { 2889 {
1888 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2890 periodic_recalc (EV_A_ w);
1889 /* if next trigger time is not sufficiently in the future, put it there */
1890 /* this might happen because of floating point inexactness */
1891 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1892 {
1893 ev_at (w) += w->interval;
1894
1895 /* if interval is unreasonably low we might still have a time in the past */
1896 /* so correct this. this will make the periodic very inexact, but the user */
1897 /* has effectively asked to get triggered more often than possible */
1898 if (ev_at (w) < ev_rt_now)
1899 ev_at (w) = ev_rt_now;
1900 }
1901
1902 ANHE_at_cache (periodics [HEAP0]); 2891 ANHE_at_cache (periodics [HEAP0]);
1903 downheap (periodics, periodiccnt, HEAP0); 2892 downheap (periodics, periodiccnt, HEAP0);
1904 } 2893 }
1905 else 2894 else
1906 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2895 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1913 feed_reverse_done (EV_A_ EV_PERIODIC); 2902 feed_reverse_done (EV_A_ EV_PERIODIC);
1914 } 2903 }
1915} 2904}
1916 2905
1917/* simply recalculate all periodics */ 2906/* simply recalculate all periodics */
1918/* 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? */
1919static void noinline 2908static void noinline ecb_cold
1920periodics_reschedule (EV_P) 2909periodics_reschedule (EV_P)
1921{ 2910{
1922 int i; 2911 int i;
1923 2912
1924 /* adjust periodics after time jump */ 2913 /* adjust periodics after time jump */
… …
1927 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2916 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1928 2917
1929 if (w->reschedule_cb) 2918 if (w->reschedule_cb)
1930 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2919 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1931 else if (w->interval) 2920 else if (w->interval)
1932 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2921 periodic_recalc (EV_A_ w);
1933 2922
1934 ANHE_at_cache (periodics [i]); 2923 ANHE_at_cache (periodics [i]);
1935 } 2924 }
1936 2925
1937 reheap (periodics, periodiccnt); 2926 reheap (periodics, periodiccnt);
1938} 2927}
1939#endif 2928#endif
1940 2929
1941/* adjust all timers by a given offset */ 2930/* adjust all timers by a given offset */
1942static void noinline 2931static void noinline ecb_cold
1943timers_reschedule (EV_P_ ev_tstamp adjust) 2932timers_reschedule (EV_P_ ev_tstamp adjust)
1944{ 2933{
1945 int i; 2934 int i;
1946 2935
1947 for (i = 0; i < timercnt; ++i) 2936 for (i = 0; i < timercnt; ++i)
… …
1951 ANHE_at_cache (*he); 2940 ANHE_at_cache (*he);
1952 } 2941 }
1953} 2942}
1954 2943
1955/* fetch new monotonic and realtime times from the kernel */ 2944/* fetch new monotonic and realtime times from the kernel */
1956/* also detetc if there was a timejump, and act accordingly */ 2945/* also detect if there was a timejump, and act accordingly */
1957inline_speed void 2946inline_speed void
1958time_update (EV_P_ ev_tstamp max_block) 2947time_update (EV_P_ ev_tstamp max_block)
1959{ 2948{
1960#if EV_USE_MONOTONIC 2949#if EV_USE_MONOTONIC
1961 if (expect_true (have_monotonic)) 2950 if (expect_true (have_monotonic))
… …
1984 * 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
1985 * in the unlikely event of having been preempted here. 2974 * in the unlikely event of having been preempted here.
1986 */ 2975 */
1987 for (i = 4; --i; ) 2976 for (i = 4; --i; )
1988 { 2977 {
2978 ev_tstamp diff;
1989 rtmn_diff = ev_rt_now - mn_now; 2979 rtmn_diff = ev_rt_now - mn_now;
1990 2980
2981 diff = odiff - rtmn_diff;
2982
1991 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2983 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1992 return; /* all is well */ 2984 return; /* all is well */
1993 2985
1994 ev_rt_now = ev_time (); 2986 ev_rt_now = ev_time ();
1995 mn_now = get_clock (); 2987 mn_now = get_clock ();
1996 now_floor = mn_now; 2988 now_floor = mn_now;
… …
2018 3010
2019 mn_now = ev_rt_now; 3011 mn_now = ev_rt_now;
2020 } 3012 }
2021} 3013}
2022 3014
2023static int loop_done; 3015int
2024
2025void
2026ev_loop (EV_P_ int flags) 3016ev_run (EV_P_ int flags)
2027{ 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
2028 loop_done = EVUNLOOP_CANCEL; 3024 loop_done = EVBREAK_CANCEL;
2029 3025
2030 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 */
2031 3027
2032 do 3028 do
2033 { 3029 {
2034#if EV_VERIFY >= 2 3030#if EV_VERIFY >= 2
2035 ev_loop_verify (EV_A); 3031 ev_verify (EV_A);
2036#endif 3032#endif
2037 3033
2038#ifndef _WIN32 3034#ifndef _WIN32
2039 if (expect_false (curpid)) /* penalise the forking check even more */ 3035 if (expect_false (curpid)) /* penalise the forking check even more */
2040 if (expect_false (getpid () != curpid)) 3036 if (expect_false (getpid () != curpid))
… …
2048 /* we might have forked, so queue fork handlers */ 3044 /* we might have forked, so queue fork handlers */
2049 if (expect_false (postfork)) 3045 if (expect_false (postfork))
2050 if (forkcnt) 3046 if (forkcnt)
2051 { 3047 {
2052 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3048 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2053 call_pending (EV_A); 3049 EV_INVOKE_PENDING;
2054 } 3050 }
2055#endif 3051#endif
2056 3052
3053#if EV_PREPARE_ENABLE
2057 /* queue prepare watchers (and execute them) */ 3054 /* queue prepare watchers (and execute them) */
2058 if (expect_false (preparecnt)) 3055 if (expect_false (preparecnt))
2059 { 3056 {
2060 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3057 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2061 call_pending (EV_A); 3058 EV_INVOKE_PENDING;
2062 } 3059 }
3060#endif
3061
3062 if (expect_false (loop_done))
3063 break;
2063 3064
2064 /* we might have forked, so reify kernel state if necessary */ 3065 /* we might have forked, so reify kernel state if necessary */
2065 if (expect_false (postfork)) 3066 if (expect_false (postfork))
2066 loop_fork (EV_A); 3067 loop_fork (EV_A);
2067 3068
… …
2071 /* calculate blocking time */ 3072 /* calculate blocking time */
2072 { 3073 {
2073 ev_tstamp waittime = 0.; 3074 ev_tstamp waittime = 0.;
2074 ev_tstamp sleeptime = 0.; 3075 ev_tstamp sleeptime = 0.;
2075 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
2076 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3088 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2077 { 3089 {
2078 /* update time to cancel out callback processing overhead */
2079 time_update (EV_A_ 1e100);
2080
2081 waittime = MAX_BLOCKTIME; 3090 waittime = MAX_BLOCKTIME;
2082 3091
2083 if (timercnt) 3092 if (timercnt)
2084 { 3093 {
2085 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3094 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2086 if (waittime > to) waittime = to; 3095 if (waittime > to) waittime = to;
2087 } 3096 }
2088 3097
2089#if EV_PERIODIC_ENABLE 3098#if EV_PERIODIC_ENABLE
2090 if (periodiccnt) 3099 if (periodiccnt)
2091 { 3100 {
2092 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3101 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2093 if (waittime > to) waittime = to; 3102 if (waittime > to) waittime = to;
2094 } 3103 }
2095#endif 3104#endif
2096 3105
3106 /* don't let timeouts decrease the waittime below timeout_blocktime */
2097 if (expect_false (waittime < timeout_blocktime)) 3107 if (expect_false (waittime < timeout_blocktime))
2098 waittime = timeout_blocktime; 3108 waittime = timeout_blocktime;
2099 3109
2100 sleeptime = waittime - backend_fudge; 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;
2101 3114
3115 /* extra check because io_blocktime is commonly 0 */
2102 if (expect_true (sleeptime > io_blocktime)) 3116 if (expect_false (io_blocktime))
2103 sleeptime = io_blocktime;
2104
2105 if (sleeptime)
2106 { 3117 {
3118 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3119
3120 if (sleeptime > waittime - backend_mintime)
3121 sleeptime = waittime - backend_mintime;
3122
3123 if (expect_true (sleeptime > 0.))
3124 {
2107 ev_sleep (sleeptime); 3125 ev_sleep (sleeptime);
2108 waittime -= sleeptime; 3126 waittime -= sleeptime;
3127 }
2109 } 3128 }
2110 } 3129 }
2111 3130
3131#if EV_FEATURE_API
2112 ++loop_count; 3132 ++loop_count;
3133#endif
3134 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2113 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
2114 3146
2115 /* update ev_rt_now, do magic */ 3147 /* update ev_rt_now, do magic */
2116 time_update (EV_A_ waittime + sleeptime); 3148 time_update (EV_A_ waittime + sleeptime);
2117 } 3149 }
2118 3150
… …
2125#if EV_IDLE_ENABLE 3157#if EV_IDLE_ENABLE
2126 /* queue idle watchers unless other events are pending */ 3158 /* queue idle watchers unless other events are pending */
2127 idle_reify (EV_A); 3159 idle_reify (EV_A);
2128#endif 3160#endif
2129 3161
3162#if EV_CHECK_ENABLE
2130 /* queue check watchers, to be executed first */ 3163 /* queue check watchers, to be executed first */
2131 if (expect_false (checkcnt)) 3164 if (expect_false (checkcnt))
2132 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3165 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3166#endif
2133 3167
2134 call_pending (EV_A); 3168 EV_INVOKE_PENDING;
2135 } 3169 }
2136 while (expect_true ( 3170 while (expect_true (
2137 activecnt 3171 activecnt
2138 && !loop_done 3172 && !loop_done
2139 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3173 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2140 )); 3174 ));
2141 3175
2142 if (loop_done == EVUNLOOP_ONE) 3176 if (loop_done == EVBREAK_ONE)
2143 loop_done = EVUNLOOP_CANCEL; 3177 loop_done = EVBREAK_CANCEL;
3178
3179#if EV_FEATURE_API
3180 --loop_depth;
3181#endif
3182
3183 return activecnt;
2144} 3184}
2145 3185
2146void 3186void
2147ev_unloop (EV_P_ int how) 3187ev_break (EV_P_ int how) EV_THROW
2148{ 3188{
2149 loop_done = how; 3189 loop_done = how;
2150} 3190}
2151 3191
2152void 3192void
2153ev_ref (EV_P) 3193ev_ref (EV_P) EV_THROW
2154{ 3194{
2155 ++activecnt; 3195 ++activecnt;
2156} 3196}
2157 3197
2158void 3198void
2159ev_unref (EV_P) 3199ev_unref (EV_P) EV_THROW
2160{ 3200{
2161 --activecnt; 3201 --activecnt;
2162} 3202}
2163 3203
2164void 3204void
2165ev_now_update (EV_P) 3205ev_now_update (EV_P) EV_THROW
2166{ 3206{
2167 time_update (EV_A_ 1e100); 3207 time_update (EV_A_ 1e100);
2168} 3208}
2169 3209
2170void 3210void
2171ev_suspend (EV_P) 3211ev_suspend (EV_P) EV_THROW
2172{ 3212{
2173 ev_now_update (EV_A); 3213 ev_now_update (EV_A);
2174} 3214}
2175 3215
2176void 3216void
2177ev_resume (EV_P) 3217ev_resume (EV_P) EV_THROW
2178{ 3218{
2179 ev_tstamp mn_prev = mn_now; 3219 ev_tstamp mn_prev = mn_now;
2180 3220
2181 ev_now_update (EV_A); 3221 ev_now_update (EV_A);
2182 timers_reschedule (EV_A_ mn_now - mn_prev); 3222 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2199inline_size void 3239inline_size void
2200wlist_del (WL *head, WL elem) 3240wlist_del (WL *head, WL elem)
2201{ 3241{
2202 while (*head) 3242 while (*head)
2203 { 3243 {
2204 if (*head == elem) 3244 if (expect_true (*head == elem))
2205 { 3245 {
2206 *head = elem->next; 3246 *head = elem->next;
2207 return; 3247 break;
2208 } 3248 }
2209 3249
2210 head = &(*head)->next; 3250 head = &(*head)->next;
2211 } 3251 }
2212} 3252}
… …
2221 w->pending = 0; 3261 w->pending = 0;
2222 } 3262 }
2223} 3263}
2224 3264
2225int 3265int
2226ev_clear_pending (EV_P_ void *w) 3266ev_clear_pending (EV_P_ void *w) EV_THROW
2227{ 3267{
2228 W w_ = (W)w; 3268 W w_ = (W)w;
2229 int pending = w_->pending; 3269 int pending = w_->pending;
2230 3270
2231 if (expect_true (pending)) 3271 if (expect_true (pending))
… …
2240} 3280}
2241 3281
2242inline_size void 3282inline_size void
2243pri_adjust (EV_P_ W w) 3283pri_adjust (EV_P_ W w)
2244{ 3284{
2245 int pri = w->priority; 3285 int pri = ev_priority (w);
2246 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 3286 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2247 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 3287 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2248 w->priority = pri; 3288 ev_set_priority (w, pri);
2249} 3289}
2250 3290
2251inline_speed void 3291inline_speed void
2252ev_start (EV_P_ W w, int active) 3292ev_start (EV_P_ W w, int active)
2253{ 3293{
… …
2264} 3304}
2265 3305
2266/*****************************************************************************/ 3306/*****************************************************************************/
2267 3307
2268void noinline 3308void noinline
2269ev_io_start (EV_P_ ev_io *w) 3309ev_io_start (EV_P_ ev_io *w) EV_THROW
2270{ 3310{
2271 int fd = w->fd; 3311 int fd = w->fd;
2272 3312
2273 if (expect_false (ev_is_active (w))) 3313 if (expect_false (ev_is_active (w)))
2274 return; 3314 return;
2275 3315
2276 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3316 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2277 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))));
2278 3318
2279 EV_FREQUENT_CHECK; 3319 EV_FREQUENT_CHECK;
2280 3320
2281 ev_start (EV_A_ (W)w, 1); 3321 ev_start (EV_A_ (W)w, 1);
2282 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3322 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2283 wlist_add (&anfds[fd].head, (WL)w); 3323 wlist_add (&anfds[fd].head, (WL)w);
2284 3324
3325 /* common bug, apparently */
3326 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3327
2285 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); 3328 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2286 w->events &= ~EV__IOFDSET; 3329 w->events &= ~EV__IOFDSET;
2287 3330
2288 EV_FREQUENT_CHECK; 3331 EV_FREQUENT_CHECK;
2289} 3332}
2290 3333
2291void noinline 3334void noinline
2292ev_io_stop (EV_P_ ev_io *w) 3335ev_io_stop (EV_P_ ev_io *w) EV_THROW
2293{ 3336{
2294 clear_pending (EV_A_ (W)w); 3337 clear_pending (EV_A_ (W)w);
2295 if (expect_false (!ev_is_active (w))) 3338 if (expect_false (!ev_is_active (w)))
2296 return; 3339 return;
2297 3340
… …
2300 EV_FREQUENT_CHECK; 3343 EV_FREQUENT_CHECK;
2301 3344
2302 wlist_del (&anfds[w->fd].head, (WL)w); 3345 wlist_del (&anfds[w->fd].head, (WL)w);
2303 ev_stop (EV_A_ (W)w); 3346 ev_stop (EV_A_ (W)w);
2304 3347
2305 fd_change (EV_A_ w->fd, 1); 3348 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2306 3349
2307 EV_FREQUENT_CHECK; 3350 EV_FREQUENT_CHECK;
2308} 3351}
2309 3352
2310void noinline 3353void noinline
2311ev_timer_start (EV_P_ ev_timer *w) 3354ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2312{ 3355{
2313 if (expect_false (ev_is_active (w))) 3356 if (expect_false (ev_is_active (w)))
2314 return; 3357 return;
2315 3358
2316 ev_at (w) += mn_now; 3359 ev_at (w) += mn_now;
… …
2330 3373
2331 /*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));*/
2332} 3375}
2333 3376
2334void noinline 3377void noinline
2335ev_timer_stop (EV_P_ ev_timer *w) 3378ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2336{ 3379{
2337 clear_pending (EV_A_ (W)w); 3380 clear_pending (EV_A_ (W)w);
2338 if (expect_false (!ev_is_active (w))) 3381 if (expect_false (!ev_is_active (w)))
2339 return; 3382 return;
2340 3383
… …
2352 timers [active] = timers [timercnt + HEAP0]; 3395 timers [active] = timers [timercnt + HEAP0];
2353 adjustheap (timers, timercnt, active); 3396 adjustheap (timers, timercnt, active);
2354 } 3397 }
2355 } 3398 }
2356 3399
2357 EV_FREQUENT_CHECK;
2358
2359 ev_at (w) -= mn_now; 3400 ev_at (w) -= mn_now;
2360 3401
2361 ev_stop (EV_A_ (W)w); 3402 ev_stop (EV_A_ (W)w);
3403
3404 EV_FREQUENT_CHECK;
2362} 3405}
2363 3406
2364void noinline 3407void noinline
2365ev_timer_again (EV_P_ ev_timer *w) 3408ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2366{ 3409{
2367 EV_FREQUENT_CHECK; 3410 EV_FREQUENT_CHECK;
3411
3412 clear_pending (EV_A_ (W)w);
2368 3413
2369 if (ev_is_active (w)) 3414 if (ev_is_active (w))
2370 { 3415 {
2371 if (w->repeat) 3416 if (w->repeat)
2372 { 3417 {
… …
2384 } 3429 }
2385 3430
2386 EV_FREQUENT_CHECK; 3431 EV_FREQUENT_CHECK;
2387} 3432}
2388 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
2389#if EV_PERIODIC_ENABLE 3440#if EV_PERIODIC_ENABLE
2390void noinline 3441void noinline
2391ev_periodic_start (EV_P_ ev_periodic *w) 3442ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2392{ 3443{
2393 if (expect_false (ev_is_active (w))) 3444 if (expect_false (ev_is_active (w)))
2394 return; 3445 return;
2395 3446
2396 if (w->reschedule_cb) 3447 if (w->reschedule_cb)
2397 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3448 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2398 else if (w->interval) 3449 else if (w->interval)
2399 { 3450 {
2400 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.));
2401 /* this formula differs from the one in periodic_reify because we do not always round up */ 3452 periodic_recalc (EV_A_ w);
2402 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2403 } 3453 }
2404 else 3454 else
2405 ev_at (w) = w->offset; 3455 ev_at (w) = w->offset;
2406 3456
2407 EV_FREQUENT_CHECK; 3457 EV_FREQUENT_CHECK;
… …
2417 3467
2418 /*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));*/
2419} 3469}
2420 3470
2421void noinline 3471void noinline
2422ev_periodic_stop (EV_P_ ev_periodic *w) 3472ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2423{ 3473{
2424 clear_pending (EV_A_ (W)w); 3474 clear_pending (EV_A_ (W)w);
2425 if (expect_false (!ev_is_active (w))) 3475 if (expect_false (!ev_is_active (w)))
2426 return; 3476 return;
2427 3477
… …
2439 periodics [active] = periodics [periodiccnt + HEAP0]; 3489 periodics [active] = periodics [periodiccnt + HEAP0];
2440 adjustheap (periodics, periodiccnt, active); 3490 adjustheap (periodics, periodiccnt, active);
2441 } 3491 }
2442 } 3492 }
2443 3493
2444 EV_FREQUENT_CHECK;
2445
2446 ev_stop (EV_A_ (W)w); 3494 ev_stop (EV_A_ (W)w);
3495
3496 EV_FREQUENT_CHECK;
2447} 3497}
2448 3498
2449void noinline 3499void noinline
2450ev_periodic_again (EV_P_ ev_periodic *w) 3500ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2451{ 3501{
2452 /* TODO: use adjustheap and recalculation */ 3502 /* TODO: use adjustheap and recalculation */
2453 ev_periodic_stop (EV_A_ w); 3503 ev_periodic_stop (EV_A_ w);
2454 ev_periodic_start (EV_A_ w); 3504 ev_periodic_start (EV_A_ w);
2455} 3505}
… …
2457 3507
2458#ifndef SA_RESTART 3508#ifndef SA_RESTART
2459# define SA_RESTART 0 3509# define SA_RESTART 0
2460#endif 3510#endif
2461 3511
3512#if EV_SIGNAL_ENABLE
3513
2462void noinline 3514void noinline
2463ev_signal_start (EV_P_ ev_signal *w) 3515ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2464{ 3516{
2465#if EV_MULTIPLICITY
2466 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2467#endif
2468 if (expect_false (ev_is_active (w))) 3517 if (expect_false (ev_is_active (w)))
2469 return; 3518 return;
2470 3519
2471 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));
2472 3521
2473 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));
2474 3525
2475 EV_FREQUENT_CHECK; 3526 signals [w->signum - 1].loop = EV_A;
3527#endif
2476 3528
3529 EV_FREQUENT_CHECK;
3530
3531#if EV_USE_SIGNALFD
3532 if (sigfd == -2)
2477 { 3533 {
2478#ifndef _WIN32 3534 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2479 sigset_t full, prev; 3535 if (sigfd < 0 && errno == EINVAL)
2480 sigfillset (&full); 3536 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2481 sigprocmask (SIG_SETMASK, &full, &prev);
2482#endif
2483 3537
2484 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 */
2485 3541
2486#ifndef _WIN32 3542 sigemptyset (&sigfd_set);
2487 sigprocmask (SIG_SETMASK, &prev, 0); 3543
2488#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 }
2489 } 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
2490 3560
2491 ev_start (EV_A_ (W)w, 1); 3561 ev_start (EV_A_ (W)w, 1);
2492 wlist_add (&signals [w->signum - 1].head, (WL)w); 3562 wlist_add (&signals [w->signum - 1].head, (WL)w);
2493 3563
2494 if (!((WL)w)->next) 3564 if (!((WL)w)->next)
3565# if EV_USE_SIGNALFD
3566 if (sigfd < 0) /*TODO*/
3567# endif
2495 { 3568 {
2496#if _WIN32 3569# ifdef _WIN32
3570 evpipe_init (EV_A);
3571
2497 signal (w->signum, ev_sighandler); 3572 signal (w->signum, ev_sighandler);
2498#else 3573# else
2499 struct sigaction sa; 3574 struct sigaction sa;
3575
3576 evpipe_init (EV_A);
3577
2500 sa.sa_handler = ev_sighandler; 3578 sa.sa_handler = ev_sighandler;
2501 sigfillset (&sa.sa_mask); 3579 sigfillset (&sa.sa_mask);
2502 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 */
2503 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 }
2504#endif 3589#endif
2505 } 3590 }
2506 3591
2507 EV_FREQUENT_CHECK; 3592 EV_FREQUENT_CHECK;
2508} 3593}
2509 3594
2510void noinline 3595void noinline
2511ev_signal_stop (EV_P_ ev_signal *w) 3596ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2512{ 3597{
2513 clear_pending (EV_A_ (W)w); 3598 clear_pending (EV_A_ (W)w);
2514 if (expect_false (!ev_is_active (w))) 3599 if (expect_false (!ev_is_active (w)))
2515 return; 3600 return;
2516 3601
… …
2518 3603
2519 wlist_del (&signals [w->signum - 1].head, (WL)w); 3604 wlist_del (&signals [w->signum - 1].head, (WL)w);
2520 ev_stop (EV_A_ (W)w); 3605 ev_stop (EV_A_ (W)w);
2521 3606
2522 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
2523 signal (w->signum, SIG_DFL); 3626 signal (w->signum, SIG_DFL);
3627 }
2524 3628
2525 EV_FREQUENT_CHECK; 3629 EV_FREQUENT_CHECK;
2526} 3630}
3631
3632#endif
3633
3634#if EV_CHILD_ENABLE
2527 3635
2528void 3636void
2529ev_child_start (EV_P_ ev_child *w) 3637ev_child_start (EV_P_ ev_child *w) EV_THROW
2530{ 3638{
2531#if EV_MULTIPLICITY 3639#if EV_MULTIPLICITY
2532 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));
2533#endif 3641#endif
2534 if (expect_false (ev_is_active (w))) 3642 if (expect_false (ev_is_active (w)))
2535 return; 3643 return;
2536 3644
2537 EV_FREQUENT_CHECK; 3645 EV_FREQUENT_CHECK;
2538 3646
2539 ev_start (EV_A_ (W)w, 1); 3647 ev_start (EV_A_ (W)w, 1);
2540 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3648 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2541 3649
2542 EV_FREQUENT_CHECK; 3650 EV_FREQUENT_CHECK;
2543} 3651}
2544 3652
2545void 3653void
2546ev_child_stop (EV_P_ ev_child *w) 3654ev_child_stop (EV_P_ ev_child *w) EV_THROW
2547{ 3655{
2548 clear_pending (EV_A_ (W)w); 3656 clear_pending (EV_A_ (W)w);
2549 if (expect_false (!ev_is_active (w))) 3657 if (expect_false (!ev_is_active (w)))
2550 return; 3658 return;
2551 3659
2552 EV_FREQUENT_CHECK; 3660 EV_FREQUENT_CHECK;
2553 3661
2554 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3662 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2555 ev_stop (EV_A_ (W)w); 3663 ev_stop (EV_A_ (W)w);
2556 3664
2557 EV_FREQUENT_CHECK; 3665 EV_FREQUENT_CHECK;
2558} 3666}
3667
3668#endif
2559 3669
2560#if EV_STAT_ENABLE 3670#if EV_STAT_ENABLE
2561 3671
2562# ifdef _WIN32 3672# ifdef _WIN32
2563# undef lstat 3673# undef lstat
… …
2569#define MIN_STAT_INTERVAL 0.1074891 3679#define MIN_STAT_INTERVAL 0.1074891
2570 3680
2571static 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);
2572 3682
2573#if EV_USE_INOTIFY 3683#if EV_USE_INOTIFY
2574# 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)
2575 3687
2576static void noinline 3688static void noinline
2577infy_add (EV_P_ ev_stat *w) 3689infy_add (EV_P_ ev_stat *w)
2578{ 3690{
2579 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);
2580 3692
2581 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 */
2582 { 3713 }
3714 else
3715 {
3716 /* can't use inotify, continue to stat */
2583 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3717 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2584 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2585 3718
2586 /* monitor some parent directory for speedup hints */ 3719 /* if path is not there, monitor some parent directory for speedup hints */
2587 /* 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, */
2588 /* but an efficiency issue only */ 3721 /* but an efficiency issue only */
2589 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3722 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2590 { 3723 {
2591 char path [4096]; 3724 char path [4096];
… …
2601 if (!pend || pend == path) 3734 if (!pend || pend == path)
2602 break; 3735 break;
2603 3736
2604 *pend = 0; 3737 *pend = 0;
2605 w->wd = inotify_add_watch (fs_fd, path, mask); 3738 w->wd = inotify_add_watch (fs_fd, path, mask);
2606 } 3739 }
2607 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3740 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2608 } 3741 }
2609 } 3742 }
2610 3743
2611 if (w->wd >= 0) 3744 if (w->wd >= 0)
2612 {
2613 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);
2614 3746
2615 /* now local changes will be tracked by inotify, but remote changes won't */ 3747 /* now re-arm timer, if required */
2616 /* unless the filesystem it known to be local, we therefore still poll */ 3748 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2617 /* also do poll on <2.6.25, but with normal frequency */
2618 struct statfs sfs;
2619
2620 if (fs_2625 && !statfs (w->path, &sfs))
2621 if (sfs.f_type == 0x1373 /* devfs */
2622 || sfs.f_type == 0xEF53 /* ext2/3 */
2623 || sfs.f_type == 0x3153464a /* jfs */
2624 || sfs.f_type == 0x52654973 /* reiser3 */
2625 || sfs.f_type == 0x01021994 /* tempfs */
2626 || sfs.f_type == 0x58465342 /* xfs */)
2627 return;
2628
2629 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2630 ev_timer_again (EV_A_ &w->timer); 3749 ev_timer_again (EV_A_ &w->timer);
2631 } 3750 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2632} 3751}
2633 3752
2634static void noinline 3753static void noinline
2635infy_del (EV_P_ ev_stat *w) 3754infy_del (EV_P_ ev_stat *w)
2636{ 3755{
… …
2639 3758
2640 if (wd < 0) 3759 if (wd < 0)
2641 return; 3760 return;
2642 3761
2643 w->wd = -2; 3762 w->wd = -2;
2644 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3763 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2645 wlist_del (&fs_hash [slot].head, (WL)w); 3764 wlist_del (&fs_hash [slot].head, (WL)w);
2646 3765
2647 /* remove this watcher, if others are watching it, they will rearm */ 3766 /* remove this watcher, if others are watching it, they will rearm */
2648 inotify_rm_watch (fs_fd, wd); 3767 inotify_rm_watch (fs_fd, wd);
2649} 3768}
… …
2651static void noinline 3770static void noinline
2652infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3771infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2653{ 3772{
2654 if (slot < 0) 3773 if (slot < 0)
2655 /* overflow, need to check for all hash slots */ 3774 /* overflow, need to check for all hash slots */
2656 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3775 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2657 infy_wd (EV_A_ slot, wd, ev); 3776 infy_wd (EV_A_ slot, wd, ev);
2658 else 3777 else
2659 { 3778 {
2660 WL w_; 3779 WL w_;
2661 3780
2662 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3781 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2663 { 3782 {
2664 ev_stat *w = (ev_stat *)w_; 3783 ev_stat *w = (ev_stat *)w_;
2665 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 */
2666 3785
2667 if (w->wd == wd || wd == -1) 3786 if (w->wd == wd || wd == -1)
2668 { 3787 {
2669 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3788 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2670 { 3789 {
2671 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);
2672 w->wd = -1; 3791 w->wd = -1;
2673 infy_add (EV_A_ w); /* re-add, no matter what */ 3792 infy_add (EV_A_ w); /* re-add, no matter what */
2674 } 3793 }
2675 3794
2676 stat_timer_cb (EV_A_ &w->timer, 0); 3795 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2681 3800
2682static void 3801static void
2683infy_cb (EV_P_ ev_io *w, int revents) 3802infy_cb (EV_P_ ev_io *w, int revents)
2684{ 3803{
2685 char buf [EV_INOTIFY_BUFSIZE]; 3804 char buf [EV_INOTIFY_BUFSIZE];
2686 struct inotify_event *ev = (struct inotify_event *)buf;
2687 int ofs; 3805 int ofs;
2688 int len = read (fs_fd, buf, sizeof (buf)); 3806 int len = read (fs_fd, buf, sizeof (buf));
2689 3807
2690 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);
2691 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 }
2692} 3814}
2693 3815
2694inline_size void 3816inline_size void ecb_cold
2695check_2625 (EV_P) 3817ev_check_2625 (EV_P)
2696{ 3818{
2697 /* kernels < 2.6.25 are borked 3819 /* kernels < 2.6.25 are borked
2698 * 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
2699 */ 3821 */
2700 struct utsname buf; 3822 if (ev_linux_version () < 0x020619)
2701 int major, minor, micro;
2702
2703 if (uname (&buf))
2704 return; 3823 return;
2705 3824
2706 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2707 return;
2708
2709 if (major < 2
2710 || (major == 2 && minor < 6)
2711 || (major == 2 && minor == 6 && micro < 25))
2712 return;
2713
2714 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 ();
2715} 3837}
2716 3838
2717inline_size void 3839inline_size void
2718infy_init (EV_P) 3840infy_init (EV_P)
2719{ 3841{
2720 if (fs_fd != -2) 3842 if (fs_fd != -2)
2721 return; 3843 return;
2722 3844
2723 fs_fd = -1; 3845 fs_fd = -1;
2724 3846
2725 check_2625 (EV_A); 3847 ev_check_2625 (EV_A);
2726 3848
2727 fs_fd = inotify_init (); 3849 fs_fd = infy_newfd ();
2728 3850
2729 if (fs_fd >= 0) 3851 if (fs_fd >= 0)
2730 { 3852 {
3853 fd_intern (fs_fd);
2731 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3854 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2732 ev_set_priority (&fs_w, EV_MAXPRI); 3855 ev_set_priority (&fs_w, EV_MAXPRI);
2733 ev_io_start (EV_A_ &fs_w); 3856 ev_io_start (EV_A_ &fs_w);
3857 ev_unref (EV_A);
2734 } 3858 }
2735} 3859}
2736 3860
2737inline_size void 3861inline_size void
2738infy_fork (EV_P) 3862infy_fork (EV_P)
… …
2740 int slot; 3864 int slot;
2741 3865
2742 if (fs_fd < 0) 3866 if (fs_fd < 0)
2743 return; 3867 return;
2744 3868
3869 ev_ref (EV_A);
3870 ev_io_stop (EV_A_ &fs_w);
2745 close (fs_fd); 3871 close (fs_fd);
2746 fs_fd = inotify_init (); 3872 fs_fd = infy_newfd ();
2747 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
2748 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3882 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2749 { 3883 {
2750 WL w_ = fs_hash [slot].head; 3884 WL w_ = fs_hash [slot].head;
2751 fs_hash [slot].head = 0; 3885 fs_hash [slot].head = 0;
2752 3886
2753 while (w_) 3887 while (w_)
… …
2758 w->wd = -1; 3892 w->wd = -1;
2759 3893
2760 if (fs_fd >= 0) 3894 if (fs_fd >= 0)
2761 infy_add (EV_A_ w); /* re-add, no matter what */ 3895 infy_add (EV_A_ w); /* re-add, no matter what */
2762 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);
2763 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 }
2764 } 3903 }
2765 } 3904 }
2766} 3905}
2767 3906
2768#endif 3907#endif
… …
2772#else 3911#else
2773# define EV_LSTAT(p,b) lstat (p, b) 3912# define EV_LSTAT(p,b) lstat (p, b)
2774#endif 3913#endif
2775 3914
2776void 3915void
2777ev_stat_stat (EV_P_ ev_stat *w) 3916ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
2778{ 3917{
2779 if (lstat (w->path, &w->attr) < 0) 3918 if (lstat (w->path, &w->attr) < 0)
2780 w->attr.st_nlink = 0; 3919 w->attr.st_nlink = 0;
2781 else if (!w->attr.st_nlink) 3920 else if (!w->attr.st_nlink)
2782 w->attr.st_nlink = 1; 3921 w->attr.st_nlink = 1;
… …
2785static void noinline 3924static void noinline
2786stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3925stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2787{ 3926{
2788 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3927 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2789 3928
2790 /* we copy this here each the time so that */ 3929 ev_statdata prev = w->attr;
2791 /* prev has the old value when the callback gets invoked */
2792 w->prev = w->attr;
2793 ev_stat_stat (EV_A_ w); 3930 ev_stat_stat (EV_A_ w);
2794 3931
2795 /* 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 */
2796 if ( 3933 if (
2797 w->prev.st_dev != w->attr.st_dev 3934 prev.st_dev != w->attr.st_dev
2798 || w->prev.st_ino != w->attr.st_ino 3935 || prev.st_ino != w->attr.st_ino
2799 || w->prev.st_mode != w->attr.st_mode 3936 || prev.st_mode != w->attr.st_mode
2800 || w->prev.st_nlink != w->attr.st_nlink 3937 || prev.st_nlink != w->attr.st_nlink
2801 || w->prev.st_uid != w->attr.st_uid 3938 || prev.st_uid != w->attr.st_uid
2802 || w->prev.st_gid != w->attr.st_gid 3939 || prev.st_gid != w->attr.st_gid
2803 || w->prev.st_rdev != w->attr.st_rdev 3940 || prev.st_rdev != w->attr.st_rdev
2804 || w->prev.st_size != w->attr.st_size 3941 || prev.st_size != w->attr.st_size
2805 || w->prev.st_atime != w->attr.st_atime 3942 || prev.st_atime != w->attr.st_atime
2806 || w->prev.st_mtime != w->attr.st_mtime 3943 || prev.st_mtime != w->attr.st_mtime
2807 || w->prev.st_ctime != w->attr.st_ctime 3944 || prev.st_ctime != w->attr.st_ctime
2808 ) { 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
2809 #if EV_USE_INOTIFY 3951 #if EV_USE_INOTIFY
2810 if (fs_fd >= 0) 3952 if (fs_fd >= 0)
2811 { 3953 {
2812 infy_del (EV_A_ w); 3954 infy_del (EV_A_ w);
2813 infy_add (EV_A_ w); 3955 infy_add (EV_A_ w);
… …
2818 ev_feed_event (EV_A_ w, EV_STAT); 3960 ev_feed_event (EV_A_ w, EV_STAT);
2819 } 3961 }
2820} 3962}
2821 3963
2822void 3964void
2823ev_stat_start (EV_P_ ev_stat *w) 3965ev_stat_start (EV_P_ ev_stat *w) EV_THROW
2824{ 3966{
2825 if (expect_false (ev_is_active (w))) 3967 if (expect_false (ev_is_active (w)))
2826 return; 3968 return;
2827 3969
2828 ev_stat_stat (EV_A_ w); 3970 ev_stat_stat (EV_A_ w);
… …
2838 3980
2839 if (fs_fd >= 0) 3981 if (fs_fd >= 0)
2840 infy_add (EV_A_ w); 3982 infy_add (EV_A_ w);
2841 else 3983 else
2842#endif 3984#endif
3985 {
2843 ev_timer_again (EV_A_ &w->timer); 3986 ev_timer_again (EV_A_ &w->timer);
3987 ev_unref (EV_A);
3988 }
2844 3989
2845 ev_start (EV_A_ (W)w, 1); 3990 ev_start (EV_A_ (W)w, 1);
2846 3991
2847 EV_FREQUENT_CHECK; 3992 EV_FREQUENT_CHECK;
2848} 3993}
2849 3994
2850void 3995void
2851ev_stat_stop (EV_P_ ev_stat *w) 3996ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
2852{ 3997{
2853 clear_pending (EV_A_ (W)w); 3998 clear_pending (EV_A_ (W)w);
2854 if (expect_false (!ev_is_active (w))) 3999 if (expect_false (!ev_is_active (w)))
2855 return; 4000 return;
2856 4001
2857 EV_FREQUENT_CHECK; 4002 EV_FREQUENT_CHECK;
2858 4003
2859#if EV_USE_INOTIFY 4004#if EV_USE_INOTIFY
2860 infy_del (EV_A_ w); 4005 infy_del (EV_A_ w);
2861#endif 4006#endif
4007
4008 if (ev_is_active (&w->timer))
4009 {
4010 ev_ref (EV_A);
2862 ev_timer_stop (EV_A_ &w->timer); 4011 ev_timer_stop (EV_A_ &w->timer);
4012 }
2863 4013
2864 ev_stop (EV_A_ (W)w); 4014 ev_stop (EV_A_ (W)w);
2865 4015
2866 EV_FREQUENT_CHECK; 4016 EV_FREQUENT_CHECK;
2867} 4017}
2868#endif 4018#endif
2869 4019
2870#if EV_IDLE_ENABLE 4020#if EV_IDLE_ENABLE
2871void 4021void
2872ev_idle_start (EV_P_ ev_idle *w) 4022ev_idle_start (EV_P_ ev_idle *w) EV_THROW
2873{ 4023{
2874 if (expect_false (ev_is_active (w))) 4024 if (expect_false (ev_is_active (w)))
2875 return; 4025 return;
2876 4026
2877 pri_adjust (EV_A_ (W)w); 4027 pri_adjust (EV_A_ (W)w);
… …
2890 4040
2891 EV_FREQUENT_CHECK; 4041 EV_FREQUENT_CHECK;
2892} 4042}
2893 4043
2894void 4044void
2895ev_idle_stop (EV_P_ ev_idle *w) 4045ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
2896{ 4046{
2897 clear_pending (EV_A_ (W)w); 4047 clear_pending (EV_A_ (W)w);
2898 if (expect_false (!ev_is_active (w))) 4048 if (expect_false (!ev_is_active (w)))
2899 return; 4049 return;
2900 4050
… …
2912 4062
2913 EV_FREQUENT_CHECK; 4063 EV_FREQUENT_CHECK;
2914} 4064}
2915#endif 4065#endif
2916 4066
4067#if EV_PREPARE_ENABLE
2917void 4068void
2918ev_prepare_start (EV_P_ ev_prepare *w) 4069ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
2919{ 4070{
2920 if (expect_false (ev_is_active (w))) 4071 if (expect_false (ev_is_active (w)))
2921 return; 4072 return;
2922 4073
2923 EV_FREQUENT_CHECK; 4074 EV_FREQUENT_CHECK;
… …
2928 4079
2929 EV_FREQUENT_CHECK; 4080 EV_FREQUENT_CHECK;
2930} 4081}
2931 4082
2932void 4083void
2933ev_prepare_stop (EV_P_ ev_prepare *w) 4084ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
2934{ 4085{
2935 clear_pending (EV_A_ (W)w); 4086 clear_pending (EV_A_ (W)w);
2936 if (expect_false (!ev_is_active (w))) 4087 if (expect_false (!ev_is_active (w)))
2937 return; 4088 return;
2938 4089
… …
2947 4098
2948 ev_stop (EV_A_ (W)w); 4099 ev_stop (EV_A_ (W)w);
2949 4100
2950 EV_FREQUENT_CHECK; 4101 EV_FREQUENT_CHECK;
2951} 4102}
4103#endif
2952 4104
4105#if EV_CHECK_ENABLE
2953void 4106void
2954ev_check_start (EV_P_ ev_check *w) 4107ev_check_start (EV_P_ ev_check *w) EV_THROW
2955{ 4108{
2956 if (expect_false (ev_is_active (w))) 4109 if (expect_false (ev_is_active (w)))
2957 return; 4110 return;
2958 4111
2959 EV_FREQUENT_CHECK; 4112 EV_FREQUENT_CHECK;
… …
2964 4117
2965 EV_FREQUENT_CHECK; 4118 EV_FREQUENT_CHECK;
2966} 4119}
2967 4120
2968void 4121void
2969ev_check_stop (EV_P_ ev_check *w) 4122ev_check_stop (EV_P_ ev_check *w) EV_THROW
2970{ 4123{
2971 clear_pending (EV_A_ (W)w); 4124 clear_pending (EV_A_ (W)w);
2972 if (expect_false (!ev_is_active (w))) 4125 if (expect_false (!ev_is_active (w)))
2973 return; 4126 return;
2974 4127
… …
2983 4136
2984 ev_stop (EV_A_ (W)w); 4137 ev_stop (EV_A_ (W)w);
2985 4138
2986 EV_FREQUENT_CHECK; 4139 EV_FREQUENT_CHECK;
2987} 4140}
4141#endif
2988 4142
2989#if EV_EMBED_ENABLE 4143#if EV_EMBED_ENABLE
2990void noinline 4144void noinline
2991ev_embed_sweep (EV_P_ ev_embed *w) 4145ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
2992{ 4146{
2993 ev_loop (w->other, EVLOOP_NONBLOCK); 4147 ev_run (w->other, EVRUN_NOWAIT);
2994} 4148}
2995 4149
2996static void 4150static void
2997embed_io_cb (EV_P_ ev_io *io, int revents) 4151embed_io_cb (EV_P_ ev_io *io, int revents)
2998{ 4152{
2999 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4153 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3000 4154
3001 if (ev_cb (w)) 4155 if (ev_cb (w))
3002 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4156 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3003 else 4157 else
3004 ev_loop (w->other, EVLOOP_NONBLOCK); 4158 ev_run (w->other, EVRUN_NOWAIT);
3005} 4159}
3006 4160
3007static void 4161static void
3008embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4162embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3009{ 4163{
3010 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4164 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3011 4165
3012 { 4166 {
3013 struct ev_loop *loop = w->other; 4167 EV_P = w->other;
3014 4168
3015 while (fdchangecnt) 4169 while (fdchangecnt)
3016 { 4170 {
3017 fd_reify (EV_A); 4171 fd_reify (EV_A);
3018 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4172 ev_run (EV_A_ EVRUN_NOWAIT);
3019 } 4173 }
3020 } 4174 }
3021} 4175}
3022 4176
3023static void 4177static void
… …
3026 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));
3027 4181
3028 ev_embed_stop (EV_A_ w); 4182 ev_embed_stop (EV_A_ w);
3029 4183
3030 { 4184 {
3031 struct ev_loop *loop = w->other; 4185 EV_P = w->other;
3032 4186
3033 ev_loop_fork (EV_A); 4187 ev_loop_fork (EV_A);
3034 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4188 ev_run (EV_A_ EVRUN_NOWAIT);
3035 } 4189 }
3036 4190
3037 ev_embed_start (EV_A_ w); 4191 ev_embed_start (EV_A_ w);
3038} 4192}
3039 4193
… …
3044 ev_idle_stop (EV_A_ idle); 4198 ev_idle_stop (EV_A_ idle);
3045} 4199}
3046#endif 4200#endif
3047 4201
3048void 4202void
3049ev_embed_start (EV_P_ ev_embed *w) 4203ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3050{ 4204{
3051 if (expect_false (ev_is_active (w))) 4205 if (expect_false (ev_is_active (w)))
3052 return; 4206 return;
3053 4207
3054 { 4208 {
3055 struct ev_loop *loop = w->other; 4209 EV_P = w->other;
3056 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 ()));
3057 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);
3058 } 4212 }
3059 4213
3060 EV_FREQUENT_CHECK; 4214 EV_FREQUENT_CHECK;
… …
3075 4229
3076 EV_FREQUENT_CHECK; 4230 EV_FREQUENT_CHECK;
3077} 4231}
3078 4232
3079void 4233void
3080ev_embed_stop (EV_P_ ev_embed *w) 4234ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3081{ 4235{
3082 clear_pending (EV_A_ (W)w); 4236 clear_pending (EV_A_ (W)w);
3083 if (expect_false (!ev_is_active (w))) 4237 if (expect_false (!ev_is_active (w)))
3084 return; 4238 return;
3085 4239
… …
3087 4241
3088 ev_io_stop (EV_A_ &w->io); 4242 ev_io_stop (EV_A_ &w->io);
3089 ev_prepare_stop (EV_A_ &w->prepare); 4243 ev_prepare_stop (EV_A_ &w->prepare);
3090 ev_fork_stop (EV_A_ &w->fork); 4244 ev_fork_stop (EV_A_ &w->fork);
3091 4245
4246 ev_stop (EV_A_ (W)w);
4247
3092 EV_FREQUENT_CHECK; 4248 EV_FREQUENT_CHECK;
3093} 4249}
3094#endif 4250#endif
3095 4251
3096#if EV_FORK_ENABLE 4252#if EV_FORK_ENABLE
3097void 4253void
3098ev_fork_start (EV_P_ ev_fork *w) 4254ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3099{ 4255{
3100 if (expect_false (ev_is_active (w))) 4256 if (expect_false (ev_is_active (w)))
3101 return; 4257 return;
3102 4258
3103 EV_FREQUENT_CHECK; 4259 EV_FREQUENT_CHECK;
… …
3108 4264
3109 EV_FREQUENT_CHECK; 4265 EV_FREQUENT_CHECK;
3110} 4266}
3111 4267
3112void 4268void
3113ev_fork_stop (EV_P_ ev_fork *w) 4269ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3114{ 4270{
3115 clear_pending (EV_A_ (W)w); 4271 clear_pending (EV_A_ (W)w);
3116 if (expect_false (!ev_is_active (w))) 4272 if (expect_false (!ev_is_active (w)))
3117 return; 4273 return;
3118 4274
… …
3129 4285
3130 EV_FREQUENT_CHECK; 4286 EV_FREQUENT_CHECK;
3131} 4287}
3132#endif 4288#endif
3133 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
3134#if EV_ASYNC_ENABLE 4331#if EV_ASYNC_ENABLE
3135void 4332void
3136ev_async_start (EV_P_ ev_async *w) 4333ev_async_start (EV_P_ ev_async *w) EV_THROW
3137{ 4334{
3138 if (expect_false (ev_is_active (w))) 4335 if (expect_false (ev_is_active (w)))
3139 return; 4336 return;
4337
4338 w->sent = 0;
3140 4339
3141 evpipe_init (EV_A); 4340 evpipe_init (EV_A);
3142 4341
3143 EV_FREQUENT_CHECK; 4342 EV_FREQUENT_CHECK;
3144 4343
… …
3148 4347
3149 EV_FREQUENT_CHECK; 4348 EV_FREQUENT_CHECK;
3150} 4349}
3151 4350
3152void 4351void
3153ev_async_stop (EV_P_ ev_async *w) 4352ev_async_stop (EV_P_ ev_async *w) EV_THROW
3154{ 4353{
3155 clear_pending (EV_A_ (W)w); 4354 clear_pending (EV_A_ (W)w);
3156 if (expect_false (!ev_is_active (w))) 4355 if (expect_false (!ev_is_active (w)))
3157 return; 4356 return;
3158 4357
… …
3169 4368
3170 EV_FREQUENT_CHECK; 4369 EV_FREQUENT_CHECK;
3171} 4370}
3172 4371
3173void 4372void
3174ev_async_send (EV_P_ ev_async *w) 4373ev_async_send (EV_P_ ev_async *w) EV_THROW
3175{ 4374{
3176 w->sent = 1; 4375 w->sent = 1;
3177 evpipe_write (EV_A_ &gotasync); 4376 evpipe_write (EV_A_ &async_pending);
3178} 4377}
3179#endif 4378#endif
3180 4379
3181/*****************************************************************************/ 4380/*****************************************************************************/
3182 4381
… …
3216 4415
3217 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));
3218} 4417}
3219 4418
3220void 4419void
3221ev_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
3222{ 4421{
3223 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));
3224 4423
3225 if (expect_false (!once)) 4424 if (expect_false (!once))
3226 { 4425 {
3227 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4426 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3228 return; 4427 return;
3229 } 4428 }
3230 4429
3231 once->cb = cb; 4430 once->cb = cb;
3232 once->arg = arg; 4431 once->arg = arg;
… …
3247} 4446}
3248 4447
3249/*****************************************************************************/ 4448/*****************************************************************************/
3250 4449
3251#if EV_WALK_ENABLE 4450#if EV_WALK_ENABLE
3252void 4451void ecb_cold
3253ev_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
3254{ 4453{
3255 int i, j; 4454 int i, j;
3256 ev_watcher_list *wl, *wn; 4455 ev_watcher_list *wl, *wn;
3257 4456
3258 if (types & (EV_IO | EV_EMBED)) 4457 if (types & (EV_IO | EV_EMBED))
… …
3301 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4500 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3302#endif 4501#endif
3303 4502
3304#if EV_IDLE_ENABLE 4503#if EV_IDLE_ENABLE
3305 if (types & EV_IDLE) 4504 if (types & EV_IDLE)
3306 for (j = NUMPRI; i--; ) 4505 for (j = NUMPRI; j--; )
3307 for (i = idlecnt [j]; i--; ) 4506 for (i = idlecnt [j]; i--; )
3308 cb (EV_A_ EV_IDLE, idles [j][i]); 4507 cb (EV_A_ EV_IDLE, idles [j][i]);
3309#endif 4508#endif
3310 4509
3311#if EV_FORK_ENABLE 4510#if EV_FORK_ENABLE
… …
3319 if (types & EV_ASYNC) 4518 if (types & EV_ASYNC)
3320 for (i = asynccnt; i--; ) 4519 for (i = asynccnt; i--; )
3321 cb (EV_A_ EV_ASYNC, asyncs [i]); 4520 cb (EV_A_ EV_ASYNC, asyncs [i]);
3322#endif 4521#endif
3323 4522
4523#if EV_PREPARE_ENABLE
3324 if (types & EV_PREPARE) 4524 if (types & EV_PREPARE)
3325 for (i = preparecnt; i--; ) 4525 for (i = preparecnt; i--; )
3326#if EV_EMBED_ENABLE 4526# if EV_EMBED_ENABLE
3327 if (ev_cb (prepares [i]) != embed_prepare_cb) 4527 if (ev_cb (prepares [i]) != embed_prepare_cb)
3328#endif 4528# endif
3329 cb (EV_A_ EV_PREPARE, prepares [i]); 4529 cb (EV_A_ EV_PREPARE, prepares [i]);
4530#endif
3330 4531
4532#if EV_CHECK_ENABLE
3331 if (types & EV_CHECK) 4533 if (types & EV_CHECK)
3332 for (i = checkcnt; i--; ) 4534 for (i = checkcnt; i--; )
3333 cb (EV_A_ EV_CHECK, checks [i]); 4535 cb (EV_A_ EV_CHECK, checks [i]);
4536#endif
3334 4537
4538#if EV_SIGNAL_ENABLE
3335 if (types & EV_SIGNAL) 4539 if (types & EV_SIGNAL)
3336 for (i = 0; i < signalmax; ++i) 4540 for (i = 0; i < EV_NSIG - 1; ++i)
3337 for (wl = signals [i].head; wl; ) 4541 for (wl = signals [i].head; wl; )
3338 { 4542 {
3339 wn = wl->next; 4543 wn = wl->next;
3340 cb (EV_A_ EV_SIGNAL, wl); 4544 cb (EV_A_ EV_SIGNAL, wl);
3341 wl = wn; 4545 wl = wn;
3342 } 4546 }
4547#endif
3343 4548
4549#if EV_CHILD_ENABLE
3344 if (types & EV_CHILD) 4550 if (types & EV_CHILD)
3345 for (i = EV_PID_HASHSIZE; i--; ) 4551 for (i = (EV_PID_HASHSIZE); i--; )
3346 for (wl = childs [i]; wl; ) 4552 for (wl = childs [i]; wl; )
3347 { 4553 {
3348 wn = wl->next; 4554 wn = wl->next;
3349 cb (EV_A_ EV_CHILD, wl); 4555 cb (EV_A_ EV_CHILD, wl);
3350 wl = wn; 4556 wl = wn;
3351 } 4557 }
4558#endif
3352/* EV_STAT 0x00001000 /* stat data changed */ 4559/* EV_STAT 0x00001000 /* stat data changed */
3353/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4560/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3354} 4561}
3355#endif 4562#endif
3356 4563
3357#if EV_MULTIPLICITY 4564#if EV_MULTIPLICITY
3358 #include "ev_wrap.h" 4565 #include "ev_wrap.h"
3359#endif 4566#endif
3360 4567
3361#ifdef __cplusplus
3362}
3363#endif
3364

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