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Comparing libev/ev.c (file contents):
Revision 1.297 by root, Fri Jul 10 00:36:21 2009 UTC vs.
Revision 1.443 by root, Thu May 31 17:53:26 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_CPP11 (__cplusplus >= 201103L)
565
566/*****************************************************************************/
567
568/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
569/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
570
571#if ECB_NO_THREADS
572 #define ECB_NO_SMP 1
573#endif
574
575#if ECB_NO_SMP
576 #define ECB_MEMORY_FENCE do { } while (0)
577#endif
578
579#ifndef ECB_MEMORY_FENCE
580 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
581 #if __i386 || __i386__
582 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
583 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
584 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
585 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
586 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
587 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
588 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
589 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
590 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
591 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
592 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
593 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
594 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
595 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
596 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
597 #elif __sparc || __sparc__
598 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
599 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
600 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
601 #elif defined __s390__ || defined __s390x__
602 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
603 #elif defined __mips__
604 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
605 #elif defined __alpha__
606 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
607 #elif defined __hppa__
608 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
609 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
610 #elif defined __ia64__
611 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
612 #endif
613 #endif
614#endif
615
616#ifndef ECB_MEMORY_FENCE
617 #if ECB_GCC_VERSION(4,7)
618 /* see comment below (stdatomic.h) about the C11 memory model. */
619 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
620 #elif defined __clang && __has_feature (cxx_atomic)
621 /* see comment below (stdatomic.h) about the C11 memory model. */
622 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
623 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
624 #define ECB_MEMORY_FENCE __sync_synchronize ()
625 #elif _MSC_VER >= 1400 /* VC++ 2005 */
626 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
627 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
628 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
629 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
630 #elif defined _WIN32
631 #include <WinNT.h>
632 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
633 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
634 #include <mbarrier.h>
635 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
636 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
637 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
638 #elif __xlC__
639 #define ECB_MEMORY_FENCE __sync ()
640 #endif
641#endif
642
643#ifndef ECB_MEMORY_FENCE
644 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
645 /* we assume that these memory fences work on all variables/all memory accesses, */
646 /* not just C11 atomics and atomic accesses */
647 #include <stdatomic.h>
648 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
649 /* any fence other than seq_cst, which isn't very efficient for us. */
650 /* Why that is, we don't know - either the C11 memory model is quite useless */
651 /* for most usages, or gcc and clang have a bug */
652 /* I *currently* lean towards the latter, and inefficiently implement */
653 /* all three of ecb's fences as a seq_cst fence */
654 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
655 #endif
656#endif
657
658#ifndef ECB_MEMORY_FENCE
659 #if !ECB_AVOID_PTHREADS
660 /*
661 * if you get undefined symbol references to pthread_mutex_lock,
662 * or failure to find pthread.h, then you should implement
663 * the ECB_MEMORY_FENCE operations for your cpu/compiler
664 * OR provide pthread.h and link against the posix thread library
665 * of your system.
666 */
667 #include <pthread.h>
668 #define ECB_NEEDS_PTHREADS 1
669 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
670
671 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
672 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
673 #endif
674#endif
675
676#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
677 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
678#endif
679
680#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
681 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
682#endif
683
684/*****************************************************************************/
685
686#if __cplusplus
687 #define ecb_inline static inline
688#elif ECB_GCC_VERSION(2,5)
689 #define ecb_inline static __inline__
690#elif ECB_C99
691 #define ecb_inline static inline
692#else
693 #define ecb_inline static
694#endif
695
696#if ECB_GCC_VERSION(3,3)
697 #define ecb_restrict __restrict__
698#elif ECB_C99
699 #define ecb_restrict restrict
700#else
701 #define ecb_restrict
702#endif
703
704typedef int ecb_bool;
705
706#define ECB_CONCAT_(a, b) a ## b
707#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
708#define ECB_STRINGIFY_(a) # a
709#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
710
711#define ecb_function_ ecb_inline
712
713#if ECB_GCC_VERSION(3,1)
714 #define ecb_attribute(attrlist) __attribute__(attrlist)
715 #define ecb_is_constant(expr) __builtin_constant_p (expr)
716 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
717 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
718#else
719 #define ecb_attribute(attrlist)
720 #define ecb_is_constant(expr) 0
721 #define ecb_expect(expr,value) (expr)
722 #define ecb_prefetch(addr,rw,locality)
723#endif
724
725/* no emulation for ecb_decltype */
726#if ECB_GCC_VERSION(4,5)
727 #define ecb_decltype(x) __decltype(x)
728#elif ECB_GCC_VERSION(3,0)
729 #define ecb_decltype(x) __typeof(x)
730#endif
731
732#define ecb_noinline ecb_attribute ((__noinline__))
733#define ecb_unused ecb_attribute ((__unused__))
734#define ecb_const ecb_attribute ((__const__))
735#define ecb_pure ecb_attribute ((__pure__))
736
737#if ECB_C11
738 #define ecb_noreturn _Noreturn
739#else
740 #define ecb_noreturn ecb_attribute ((__noreturn__))
741#endif
742
743#if ECB_GCC_VERSION(4,3)
744 #define ecb_artificial ecb_attribute ((__artificial__))
745 #define ecb_hot ecb_attribute ((__hot__))
746 #define ecb_cold ecb_attribute ((__cold__))
747#else
748 #define ecb_artificial
749 #define ecb_hot
750 #define ecb_cold
751#endif
752
753/* put around conditional expressions if you are very sure that the */
754/* expression is mostly true or mostly false. note that these return */
755/* booleans, not the expression. */
386#define expect_false(expr) expect ((expr) != 0, 0) 756#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
387#define expect_true(expr) expect ((expr) != 0, 1) 757#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
758/* for compatibility to the rest of the world */
759#define ecb_likely(expr) ecb_expect_true (expr)
760#define ecb_unlikely(expr) ecb_expect_false (expr)
761
762/* count trailing zero bits and count # of one bits */
763#if ECB_GCC_VERSION(3,4)
764 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
765 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
766 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
767 #define ecb_ctz32(x) __builtin_ctz (x)
768 #define ecb_ctz64(x) __builtin_ctzll (x)
769 #define ecb_popcount32(x) __builtin_popcount (x)
770 /* no popcountll */
771#else
772 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
773 ecb_function_ int
774 ecb_ctz32 (uint32_t x)
775 {
776 int r = 0;
777
778 x &= ~x + 1; /* this isolates the lowest bit */
779
780#if ECB_branchless_on_i386
781 r += !!(x & 0xaaaaaaaa) << 0;
782 r += !!(x & 0xcccccccc) << 1;
783 r += !!(x & 0xf0f0f0f0) << 2;
784 r += !!(x & 0xff00ff00) << 3;
785 r += !!(x & 0xffff0000) << 4;
786#else
787 if (x & 0xaaaaaaaa) r += 1;
788 if (x & 0xcccccccc) r += 2;
789 if (x & 0xf0f0f0f0) r += 4;
790 if (x & 0xff00ff00) r += 8;
791 if (x & 0xffff0000) r += 16;
792#endif
793
794 return r;
795 }
796
797 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
798 ecb_function_ int
799 ecb_ctz64 (uint64_t x)
800 {
801 int shift = x & 0xffffffffU ? 0 : 32;
802 return ecb_ctz32 (x >> shift) + shift;
803 }
804
805 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
806 ecb_function_ int
807 ecb_popcount32 (uint32_t x)
808 {
809 x -= (x >> 1) & 0x55555555;
810 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
811 x = ((x >> 4) + x) & 0x0f0f0f0f;
812 x *= 0x01010101;
813
814 return x >> 24;
815 }
816
817 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
818 ecb_function_ int ecb_ld32 (uint32_t x)
819 {
820 int r = 0;
821
822 if (x >> 16) { x >>= 16; r += 16; }
823 if (x >> 8) { x >>= 8; r += 8; }
824 if (x >> 4) { x >>= 4; r += 4; }
825 if (x >> 2) { x >>= 2; r += 2; }
826 if (x >> 1) { r += 1; }
827
828 return r;
829 }
830
831 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
832 ecb_function_ int ecb_ld64 (uint64_t x)
833 {
834 int r = 0;
835
836 if (x >> 32) { x >>= 32; r += 32; }
837
838 return r + ecb_ld32 (x);
839 }
840#endif
841
842ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;
843ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
844ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;
845ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
846
847ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
848ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
849{
850 return ( (x * 0x0802U & 0x22110U)
851 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
852}
853
854ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
855ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
856{
857 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
858 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
859 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
860 x = ( x >> 8 ) | ( x << 8);
861
862 return x;
863}
864
865ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
866ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
867{
868 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
869 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
870 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
871 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
872 x = ( x >> 16 ) | ( x << 16);
873
874 return x;
875}
876
877/* popcount64 is only available on 64 bit cpus as gcc builtin */
878/* so for this version we are lazy */
879ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
880ecb_function_ int
881ecb_popcount64 (uint64_t x)
882{
883 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
884}
885
886ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
887ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
888ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
889ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
890ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
891ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
892ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
893ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
894
895ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
896ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
897ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
898ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
899ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
900ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
901ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
902ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
903
904#if ECB_GCC_VERSION(4,3)
905 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
906 #define ecb_bswap32(x) __builtin_bswap32 (x)
907 #define ecb_bswap64(x) __builtin_bswap64 (x)
908#else
909 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
910 ecb_function_ uint16_t
911 ecb_bswap16 (uint16_t x)
912 {
913 return ecb_rotl16 (x, 8);
914 }
915
916 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
917 ecb_function_ uint32_t
918 ecb_bswap32 (uint32_t x)
919 {
920 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
921 }
922
923 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
924 ecb_function_ uint64_t
925 ecb_bswap64 (uint64_t x)
926 {
927 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
928 }
929#endif
930
931#if ECB_GCC_VERSION(4,5)
932 #define ecb_unreachable() __builtin_unreachable ()
933#else
934 /* this seems to work fine, but gcc always emits a warning for it :/ */
935 ecb_inline void ecb_unreachable (void) ecb_noreturn;
936 ecb_inline void ecb_unreachable (void) { }
937#endif
938
939/* try to tell the compiler that some condition is definitely true */
940#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
941
942ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
943ecb_inline unsigned char
944ecb_byteorder_helper (void)
945{
946 const uint32_t u = 0x11223344;
947 return *(unsigned char *)&u;
948}
949
950ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
951ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
952ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
953ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
954
955#if ECB_GCC_VERSION(3,0) || ECB_C99
956 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
957#else
958 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
959#endif
960
961#if __cplusplus
962 template<typename T>
963 static inline T ecb_div_rd (T val, T div)
964 {
965 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
966 }
967 template<typename T>
968 static inline T ecb_div_ru (T val, T div)
969 {
970 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
971 }
972#else
973 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
974 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
975#endif
976
977#if ecb_cplusplus_does_not_suck
978 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
979 template<typename T, int N>
980 static inline int ecb_array_length (const T (&arr)[N])
981 {
982 return N;
983 }
984#else
985 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
986#endif
987
988#endif
989
990/* ECB.H END */
991
992#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
993/* if your architecture doesn't need memory fences, e.g. because it is
994 * single-cpu/core, or if you use libev in a project that doesn't use libev
995 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
996 * libev, in which cases the memory fences become nops.
997 * alternatively, you can remove this #error and link against libpthread,
998 * which will then provide the memory fences.
999 */
1000# error "memory fences not defined for your architecture, please report"
1001#endif
1002
1003#ifndef ECB_MEMORY_FENCE
1004# define ECB_MEMORY_FENCE do { } while (0)
1005# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1006# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1007#endif
1008
1009#define expect_false(cond) ecb_expect_false (cond)
1010#define expect_true(cond) ecb_expect_true (cond)
1011#define noinline ecb_noinline
1012
388#define inline_size static inline 1013#define inline_size ecb_inline
389 1014
390#if EV_MINIMAL 1015#if EV_FEATURE_CODE
1016# define inline_speed ecb_inline
1017#else
391# define inline_speed static noinline 1018# define inline_speed static noinline
392#else
393# define inline_speed static inline
394#endif 1019#endif
395 1020
396#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1021#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
397 1022
398#if EV_MINPRI == EV_MAXPRI 1023#if EV_MINPRI == EV_MAXPRI
… …
411#define ev_active(w) ((W)(w))->active 1036#define ev_active(w) ((W)(w))->active
412#define ev_at(w) ((WT)(w))->at 1037#define ev_at(w) ((WT)(w))->at
413 1038
414#if EV_USE_REALTIME 1039#if EV_USE_REALTIME
415/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1040/* sig_atomic_t is used to avoid per-thread variables or locking but still */
416/* giving it a reasonably high chance of working on typical architetcures */ 1041/* giving it a reasonably high chance of working on typical architectures */
417static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1042static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
418#endif 1043#endif
419 1044
420#if EV_USE_MONOTONIC 1045#if EV_USE_MONOTONIC
421static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1046static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
422#endif 1047#endif
423 1048
1049#ifndef EV_FD_TO_WIN32_HANDLE
1050# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
1051#endif
1052#ifndef EV_WIN32_HANDLE_TO_FD
1053# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
1054#endif
1055#ifndef EV_WIN32_CLOSE_FD
1056# define EV_WIN32_CLOSE_FD(fd) close (fd)
1057#endif
1058
424#ifdef _WIN32 1059#ifdef _WIN32
425# include "ev_win32.c" 1060# include "ev_win32.c"
426#endif 1061#endif
427 1062
428/*****************************************************************************/ 1063/*****************************************************************************/
429 1064
1065/* define a suitable floor function (only used by periodics atm) */
1066
1067#if EV_USE_FLOOR
1068# include <math.h>
1069# define ev_floor(v) floor (v)
1070#else
1071
1072#include <float.h>
1073
1074/* a floor() replacement function, should be independent of ev_tstamp type */
1075static ev_tstamp noinline
1076ev_floor (ev_tstamp v)
1077{
1078 /* the choice of shift factor is not terribly important */
1079#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1080 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1081#else
1082 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1083#endif
1084
1085 /* argument too large for an unsigned long? */
1086 if (expect_false (v >= shift))
1087 {
1088 ev_tstamp f;
1089
1090 if (v == v - 1.)
1091 return v; /* very large number */
1092
1093 f = shift * ev_floor (v * (1. / shift));
1094 return f + ev_floor (v - f);
1095 }
1096
1097 /* special treatment for negative args? */
1098 if (expect_false (v < 0.))
1099 {
1100 ev_tstamp f = -ev_floor (-v);
1101
1102 return f - (f == v ? 0 : 1);
1103 }
1104
1105 /* fits into an unsigned long */
1106 return (unsigned long)v;
1107}
1108
1109#endif
1110
1111/*****************************************************************************/
1112
1113#ifdef __linux
1114# include <sys/utsname.h>
1115#endif
1116
1117static unsigned int noinline ecb_cold
1118ev_linux_version (void)
1119{
1120#ifdef __linux
1121 unsigned int v = 0;
1122 struct utsname buf;
1123 int i;
1124 char *p = buf.release;
1125
1126 if (uname (&buf))
1127 return 0;
1128
1129 for (i = 3+1; --i; )
1130 {
1131 unsigned int c = 0;
1132
1133 for (;;)
1134 {
1135 if (*p >= '0' && *p <= '9')
1136 c = c * 10 + *p++ - '0';
1137 else
1138 {
1139 p += *p == '.';
1140 break;
1141 }
1142 }
1143
1144 v = (v << 8) | c;
1145 }
1146
1147 return v;
1148#else
1149 return 0;
1150#endif
1151}
1152
1153/*****************************************************************************/
1154
1155#if EV_AVOID_STDIO
1156static void noinline ecb_cold
1157ev_printerr (const char *msg)
1158{
1159 write (STDERR_FILENO, msg, strlen (msg));
1160}
1161#endif
1162
430static void (*syserr_cb)(const char *msg); 1163static void (*syserr_cb)(const char *msg) EV_THROW;
431 1164
432void 1165void ecb_cold
433ev_set_syserr_cb (void (*cb)(const char *msg)) 1166ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
434{ 1167{
435 syserr_cb = cb; 1168 syserr_cb = cb;
436} 1169}
437 1170
438static void noinline 1171static void noinline ecb_cold
439ev_syserr (const char *msg) 1172ev_syserr (const char *msg)
440{ 1173{
441 if (!msg) 1174 if (!msg)
442 msg = "(libev) system error"; 1175 msg = "(libev) system error";
443 1176
444 if (syserr_cb) 1177 if (syserr_cb)
445 syserr_cb (msg); 1178 syserr_cb (msg);
446 else 1179 else
447 { 1180 {
1181#if EV_AVOID_STDIO
1182 ev_printerr (msg);
1183 ev_printerr (": ");
1184 ev_printerr (strerror (errno));
1185 ev_printerr ("\n");
1186#else
448 perror (msg); 1187 perror (msg);
1188#endif
449 abort (); 1189 abort ();
450 } 1190 }
451} 1191}
452 1192
453static void * 1193static void *
454ev_realloc_emul (void *ptr, long size) 1194ev_realloc_emul (void *ptr, long size) EV_THROW
455{ 1195{
1196#if __GLIBC__
1197 return realloc (ptr, size);
1198#else
456 /* some systems, notably openbsd and darwin, fail to properly 1199 /* some systems, notably openbsd and darwin, fail to properly
457 * implement realloc (x, 0) (as required by both ansi c-98 and 1200 * implement realloc (x, 0) (as required by both ansi c-89 and
458 * the single unix specification, so work around them here. 1201 * the single unix specification, so work around them here.
459 */ 1202 */
460 1203
461 if (size) 1204 if (size)
462 return realloc (ptr, size); 1205 return realloc (ptr, size);
463 1206
464 free (ptr); 1207 free (ptr);
465 return 0; 1208 return 0;
1209#endif
466} 1210}
467 1211
468static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1212static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
469 1213
470void 1214void ecb_cold
471ev_set_allocator (void *(*cb)(void *ptr, long size)) 1215ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
472{ 1216{
473 alloc = cb; 1217 alloc = cb;
474} 1218}
475 1219
476inline_speed void * 1220inline_speed void *
… …
478{ 1222{
479 ptr = alloc (ptr, size); 1223 ptr = alloc (ptr, size);
480 1224
481 if (!ptr && size) 1225 if (!ptr && size)
482 { 1226 {
1227#if EV_AVOID_STDIO
1228 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1229#else
483 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1230 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1231#endif
484 abort (); 1232 abort ();
485 } 1233 }
486 1234
487 return ptr; 1235 return ptr;
488} 1236}
… …
490#define ev_malloc(size) ev_realloc (0, (size)) 1238#define ev_malloc(size) ev_realloc (0, (size))
491#define ev_free(ptr) ev_realloc ((ptr), 0) 1239#define ev_free(ptr) ev_realloc ((ptr), 0)
492 1240
493/*****************************************************************************/ 1241/*****************************************************************************/
494 1242
1243/* set in reify when reification needed */
1244#define EV_ANFD_REIFY 1
1245
495/* file descriptor info structure */ 1246/* file descriptor info structure */
496typedef struct 1247typedef struct
497{ 1248{
498 WL head; 1249 WL head;
499 unsigned char events; /* the events watched for */ 1250 unsigned char events; /* the events watched for */
500 unsigned char reify; /* flag set when this ANFD needs reification */ 1251 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
501 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1252 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
502 unsigned char unused; 1253 unsigned char unused;
503#if EV_USE_EPOLL 1254#if EV_USE_EPOLL
504 unsigned int egen; /* generation counter to counter epoll bugs */ 1255 unsigned int egen; /* generation counter to counter epoll bugs */
505#endif 1256#endif
506#if EV_SELECT_IS_WINSOCKET 1257#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
507 SOCKET handle; 1258 SOCKET handle;
1259#endif
1260#if EV_USE_IOCP
1261 OVERLAPPED or, ow;
508#endif 1262#endif
509} ANFD; 1263} ANFD;
510 1264
511/* stores the pending event set for a given watcher */ 1265/* stores the pending event set for a given watcher */
512typedef struct 1266typedef struct
… …
554 #undef VAR 1308 #undef VAR
555 }; 1309 };
556 #include "ev_wrap.h" 1310 #include "ev_wrap.h"
557 1311
558 static struct ev_loop default_loop_struct; 1312 static struct ev_loop default_loop_struct;
559 struct ev_loop *ev_default_loop_ptr; 1313 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
560 1314
561#else 1315#else
562 1316
563 ev_tstamp ev_rt_now; 1317 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
564 #define VAR(name,decl) static decl; 1318 #define VAR(name,decl) static decl;
565 #include "ev_vars.h" 1319 #include "ev_vars.h"
566 #undef VAR 1320 #undef VAR
567 1321
568 static int ev_default_loop_ptr; 1322 static int ev_default_loop_ptr;
569 1323
570#endif 1324#endif
571 1325
572#if EV_MINIMAL < 2 1326#if EV_FEATURE_API
573# define EV_SUSPEND_CB if (expect_false (suspend_cb)) suspend_cb (EV_A)
574# define EV_RESUME_CB if (expect_false (resume_cb )) resume_cb (EV_A) 1327# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
1328# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
575# define EV_INVOKE_PENDING invoke_cb (EV_A) 1329# define EV_INVOKE_PENDING invoke_cb (EV_A)
576#else 1330#else
577# define EV_SUSPEND_CB (void)0
578# define EV_RESUME_CB (void)0 1331# define EV_RELEASE_CB (void)0
1332# define EV_ACQUIRE_CB (void)0
579# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1333# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
580#endif 1334#endif
1335
1336#define EVBREAK_RECURSE 0x80
581 1337
582/*****************************************************************************/ 1338/*****************************************************************************/
583 1339
584#ifndef EV_HAVE_EV_TIME 1340#ifndef EV_HAVE_EV_TIME
585ev_tstamp 1341ev_tstamp
586ev_time (void) 1342ev_time (void) EV_THROW
587{ 1343{
588#if EV_USE_REALTIME 1344#if EV_USE_REALTIME
589 if (expect_true (have_realtime)) 1345 if (expect_true (have_realtime))
590 { 1346 {
591 struct timespec ts; 1347 struct timespec ts;
… …
615 return ev_time (); 1371 return ev_time ();
616} 1372}
617 1373
618#if EV_MULTIPLICITY 1374#if EV_MULTIPLICITY
619ev_tstamp 1375ev_tstamp
620ev_now (EV_P) 1376ev_now (EV_P) EV_THROW
621{ 1377{
622 return ev_rt_now; 1378 return ev_rt_now;
623} 1379}
624#endif 1380#endif
625 1381
626void 1382void
627ev_sleep (ev_tstamp delay) 1383ev_sleep (ev_tstamp delay) EV_THROW
628{ 1384{
629 if (delay > 0.) 1385 if (delay > 0.)
630 { 1386 {
631#if EV_USE_NANOSLEEP 1387#if EV_USE_NANOSLEEP
632 struct timespec ts; 1388 struct timespec ts;
633 1389
634 ts.tv_sec = (time_t)delay; 1390 EV_TS_SET (ts, delay);
635 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
636
637 nanosleep (&ts, 0); 1391 nanosleep (&ts, 0);
638#elif defined(_WIN32) 1392#elif defined _WIN32
639 Sleep ((unsigned long)(delay * 1e3)); 1393 Sleep ((unsigned long)(delay * 1e3));
640#else 1394#else
641 struct timeval tv; 1395 struct timeval tv;
642 1396
643 tv.tv_sec = (time_t)delay;
644 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
645
646 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1397 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
647 /* somehting not guaranteed by newer posix versions, but guaranteed */ 1398 /* something not guaranteed by newer posix versions, but guaranteed */
648 /* by older ones */ 1399 /* by older ones */
1400 EV_TV_SET (tv, delay);
649 select (0, 0, 0, 0, &tv); 1401 select (0, 0, 0, 0, &tv);
650#endif 1402#endif
651 } 1403 }
652} 1404}
653 1405
654/*****************************************************************************/ 1406/*****************************************************************************/
655 1407
656#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1408#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
657 1409
658/* find a suitable new size for the given array, */ 1410/* find a suitable new size for the given array, */
659/* hopefully by rounding to a ncie-to-malloc size */ 1411/* hopefully by rounding to a nice-to-malloc size */
660inline_size int 1412inline_size int
661array_nextsize (int elem, int cur, int cnt) 1413array_nextsize (int elem, int cur, int cnt)
662{ 1414{
663 int ncur = cur + 1; 1415 int ncur = cur + 1;
664 1416
665 do 1417 do
666 ncur <<= 1; 1418 ncur <<= 1;
667 while (cnt > ncur); 1419 while (cnt > ncur);
668 1420
669 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1421 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
670 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1422 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
671 { 1423 {
672 ncur *= elem; 1424 ncur *= elem;
673 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1425 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
674 ncur = ncur - sizeof (void *) * 4; 1426 ncur = ncur - sizeof (void *) * 4;
… …
676 } 1428 }
677 1429
678 return ncur; 1430 return ncur;
679} 1431}
680 1432
681static noinline void * 1433static void * noinline ecb_cold
682array_realloc (int elem, void *base, int *cur, int cnt) 1434array_realloc (int elem, void *base, int *cur, int cnt)
683{ 1435{
684 *cur = array_nextsize (elem, *cur, cnt); 1436 *cur = array_nextsize (elem, *cur, cnt);
685 return ev_realloc (base, elem * *cur); 1437 return ev_realloc (base, elem * *cur);
686} 1438}
… …
689 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1441 memset ((void *)(base), 0, sizeof (*(base)) * (count))
690 1442
691#define array_needsize(type,base,cur,cnt,init) \ 1443#define array_needsize(type,base,cur,cnt,init) \
692 if (expect_false ((cnt) > (cur))) \ 1444 if (expect_false ((cnt) > (cur))) \
693 { \ 1445 { \
694 int ocur_ = (cur); \ 1446 int ecb_unused ocur_ = (cur); \
695 (base) = (type *)array_realloc \ 1447 (base) = (type *)array_realloc \
696 (sizeof (type), (base), &(cur), (cnt)); \ 1448 (sizeof (type), (base), &(cur), (cnt)); \
697 init ((base) + (ocur_), (cur) - ocur_); \ 1449 init ((base) + (ocur_), (cur) - ocur_); \
698 } 1450 }
699 1451
… …
717pendingcb (EV_P_ ev_prepare *w, int revents) 1469pendingcb (EV_P_ ev_prepare *w, int revents)
718{ 1470{
719} 1471}
720 1472
721void noinline 1473void noinline
722ev_feed_event (EV_P_ void *w, int revents) 1474ev_feed_event (EV_P_ void *w, int revents) EV_THROW
723{ 1475{
724 W w_ = (W)w; 1476 W w_ = (W)w;
725 int pri = ABSPRI (w_); 1477 int pri = ABSPRI (w_);
726 1478
727 if (expect_false (w_->pending)) 1479 if (expect_false (w_->pending))
… …
731 w_->pending = ++pendingcnt [pri]; 1483 w_->pending = ++pendingcnt [pri];
732 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1484 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
733 pendings [pri][w_->pending - 1].w = w_; 1485 pendings [pri][w_->pending - 1].w = w_;
734 pendings [pri][w_->pending - 1].events = revents; 1486 pendings [pri][w_->pending - 1].events = revents;
735 } 1487 }
1488
1489 pendingpri = NUMPRI - 1;
736} 1490}
737 1491
738inline_speed void 1492inline_speed void
739feed_reverse (EV_P_ W w) 1493feed_reverse (EV_P_ W w)
740{ 1494{
… …
760} 1514}
761 1515
762/*****************************************************************************/ 1516/*****************************************************************************/
763 1517
764inline_speed void 1518inline_speed void
765fd_event (EV_P_ int fd, int revents) 1519fd_event_nocheck (EV_P_ int fd, int revents)
766{ 1520{
767 ANFD *anfd = anfds + fd; 1521 ANFD *anfd = anfds + fd;
768 ev_io *w; 1522 ev_io *w;
769 1523
770 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1524 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
774 if (ev) 1528 if (ev)
775 ev_feed_event (EV_A_ (W)w, ev); 1529 ev_feed_event (EV_A_ (W)w, ev);
776 } 1530 }
777} 1531}
778 1532
1533/* do not submit kernel events for fds that have reify set */
1534/* because that means they changed while we were polling for new events */
1535inline_speed void
1536fd_event (EV_P_ int fd, int revents)
1537{
1538 ANFD *anfd = anfds + fd;
1539
1540 if (expect_true (!anfd->reify))
1541 fd_event_nocheck (EV_A_ fd, revents);
1542}
1543
779void 1544void
780ev_feed_fd_event (EV_P_ int fd, int revents) 1545ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
781{ 1546{
782 if (fd >= 0 && fd < anfdmax) 1547 if (fd >= 0 && fd < anfdmax)
783 fd_event (EV_A_ fd, revents); 1548 fd_event_nocheck (EV_A_ fd, revents);
784} 1549}
785 1550
786/* make sure the external fd watch events are in-sync */ 1551/* make sure the external fd watch events are in-sync */
787/* with the kernel/libev internal state */ 1552/* with the kernel/libev internal state */
788inline_size void 1553inline_size void
789fd_reify (EV_P) 1554fd_reify (EV_P)
790{ 1555{
791 int i; 1556 int i;
792 1557
1558#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1559 for (i = 0; i < fdchangecnt; ++i)
1560 {
1561 int fd = fdchanges [i];
1562 ANFD *anfd = anfds + fd;
1563
1564 if (anfd->reify & EV__IOFDSET && anfd->head)
1565 {
1566 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1567
1568 if (handle != anfd->handle)
1569 {
1570 unsigned long arg;
1571
1572 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1573
1574 /* handle changed, but fd didn't - we need to do it in two steps */
1575 backend_modify (EV_A_ fd, anfd->events, 0);
1576 anfd->events = 0;
1577 anfd->handle = handle;
1578 }
1579 }
1580 }
1581#endif
1582
793 for (i = 0; i < fdchangecnt; ++i) 1583 for (i = 0; i < fdchangecnt; ++i)
794 { 1584 {
795 int fd = fdchanges [i]; 1585 int fd = fdchanges [i];
796 ANFD *anfd = anfds + fd; 1586 ANFD *anfd = anfds + fd;
797 ev_io *w; 1587 ev_io *w;
798 1588
799 unsigned char events = 0; 1589 unsigned char o_events = anfd->events;
1590 unsigned char o_reify = anfd->reify;
800 1591
801 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1592 anfd->reify = 0;
802 events |= (unsigned char)w->events;
803 1593
804#if EV_SELECT_IS_WINSOCKET 1594 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
805 if (events)
806 { 1595 {
807 unsigned long arg; 1596 anfd->events = 0;
808 #ifdef EV_FD_TO_WIN32_HANDLE 1597
809 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1598 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
810 #else 1599 anfd->events |= (unsigned char)w->events;
811 anfd->handle = _get_osfhandle (fd); 1600
812 #endif 1601 if (o_events != anfd->events)
813 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1602 o_reify = EV__IOFDSET; /* actually |= */
814 } 1603 }
815#endif
816 1604
817 { 1605 if (o_reify & EV__IOFDSET)
818 unsigned char o_events = anfd->events;
819 unsigned char o_reify = anfd->reify;
820
821 anfd->reify = 0;
822 anfd->events = events;
823
824 if (o_events != events || o_reify & EV__IOFDSET)
825 backend_modify (EV_A_ fd, o_events, events); 1606 backend_modify (EV_A_ fd, o_events, anfd->events);
826 }
827 } 1607 }
828 1608
829 fdchangecnt = 0; 1609 fdchangecnt = 0;
830} 1610}
831 1611
… …
843 fdchanges [fdchangecnt - 1] = fd; 1623 fdchanges [fdchangecnt - 1] = fd;
844 } 1624 }
845} 1625}
846 1626
847/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1627/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
848inline_speed void 1628inline_speed void ecb_cold
849fd_kill (EV_P_ int fd) 1629fd_kill (EV_P_ int fd)
850{ 1630{
851 ev_io *w; 1631 ev_io *w;
852 1632
853 while ((w = (ev_io *)anfds [fd].head)) 1633 while ((w = (ev_io *)anfds [fd].head))
… …
855 ev_io_stop (EV_A_ w); 1635 ev_io_stop (EV_A_ w);
856 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1636 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
857 } 1637 }
858} 1638}
859 1639
860/* check whether the given fd is atcually valid, for error recovery */ 1640/* check whether the given fd is actually valid, for error recovery */
861inline_size int 1641inline_size int ecb_cold
862fd_valid (int fd) 1642fd_valid (int fd)
863{ 1643{
864#ifdef _WIN32 1644#ifdef _WIN32
865 return _get_osfhandle (fd) != -1; 1645 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
866#else 1646#else
867 return fcntl (fd, F_GETFD) != -1; 1647 return fcntl (fd, F_GETFD) != -1;
868#endif 1648#endif
869} 1649}
870 1650
871/* called on EBADF to verify fds */ 1651/* called on EBADF to verify fds */
872static void noinline 1652static void noinline ecb_cold
873fd_ebadf (EV_P) 1653fd_ebadf (EV_P)
874{ 1654{
875 int fd; 1655 int fd;
876 1656
877 for (fd = 0; fd < anfdmax; ++fd) 1657 for (fd = 0; fd < anfdmax; ++fd)
… …
879 if (!fd_valid (fd) && errno == EBADF) 1659 if (!fd_valid (fd) && errno == EBADF)
880 fd_kill (EV_A_ fd); 1660 fd_kill (EV_A_ fd);
881} 1661}
882 1662
883/* called on ENOMEM in select/poll to kill some fds and retry */ 1663/* called on ENOMEM in select/poll to kill some fds and retry */
884static void noinline 1664static void noinline ecb_cold
885fd_enomem (EV_P) 1665fd_enomem (EV_P)
886{ 1666{
887 int fd; 1667 int fd;
888 1668
889 for (fd = anfdmax; fd--; ) 1669 for (fd = anfdmax; fd--; )
890 if (anfds [fd].events) 1670 if (anfds [fd].events)
891 { 1671 {
892 fd_kill (EV_A_ fd); 1672 fd_kill (EV_A_ fd);
893 return; 1673 break;
894 } 1674 }
895} 1675}
896 1676
897/* usually called after fork if backend needs to re-arm all fds from scratch */ 1677/* usually called after fork if backend needs to re-arm all fds from scratch */
898static void noinline 1678static void noinline
… …
903 for (fd = 0; fd < anfdmax; ++fd) 1683 for (fd = 0; fd < anfdmax; ++fd)
904 if (anfds [fd].events) 1684 if (anfds [fd].events)
905 { 1685 {
906 anfds [fd].events = 0; 1686 anfds [fd].events = 0;
907 anfds [fd].emask = 0; 1687 anfds [fd].emask = 0;
908 fd_change (EV_A_ fd, EV__IOFDSET | 1); 1688 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
909 } 1689 }
910} 1690}
911 1691
1692/* used to prepare libev internal fd's */
1693/* this is not fork-safe */
1694inline_speed void
1695fd_intern (int fd)
1696{
1697#ifdef _WIN32
1698 unsigned long arg = 1;
1699 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1700#else
1701 fcntl (fd, F_SETFD, FD_CLOEXEC);
1702 fcntl (fd, F_SETFL, O_NONBLOCK);
1703#endif
1704}
1705
912/*****************************************************************************/ 1706/*****************************************************************************/
913 1707
914/* 1708/*
915 * the heap functions want a real array index. array index 0 uis guaranteed to not 1709 * the heap functions want a real array index. array index 0 is guaranteed to not
916 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1710 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
917 * the branching factor of the d-tree. 1711 * the branching factor of the d-tree.
918 */ 1712 */
919 1713
920/* 1714/*
… …
988 1782
989 for (;;) 1783 for (;;)
990 { 1784 {
991 int c = k << 1; 1785 int c = k << 1;
992 1786
993 if (c > N + HEAP0 - 1) 1787 if (c >= N + HEAP0)
994 break; 1788 break;
995 1789
996 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1790 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
997 ? 1 : 0; 1791 ? 1 : 0;
998 1792
… …
1034 1828
1035/* move an element suitably so it is in a correct place */ 1829/* move an element suitably so it is in a correct place */
1036inline_size void 1830inline_size void
1037adjustheap (ANHE *heap, int N, int k) 1831adjustheap (ANHE *heap, int N, int k)
1038{ 1832{
1039 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1833 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1040 upheap (heap, k); 1834 upheap (heap, k);
1041 else 1835 else
1042 downheap (heap, N, k); 1836 downheap (heap, N, k);
1043} 1837}
1044 1838
… …
1057/*****************************************************************************/ 1851/*****************************************************************************/
1058 1852
1059/* associate signal watchers to a signal signal */ 1853/* associate signal watchers to a signal signal */
1060typedef struct 1854typedef struct
1061{ 1855{
1856 EV_ATOMIC_T pending;
1857#if EV_MULTIPLICITY
1858 EV_P;
1859#endif
1062 WL head; 1860 WL head;
1063 EV_ATOMIC_T gotsig;
1064} ANSIG; 1861} ANSIG;
1065 1862
1066static ANSIG *signals; 1863static ANSIG signals [EV_NSIG - 1];
1067static int signalmax;
1068
1069static EV_ATOMIC_T gotsig;
1070 1864
1071/*****************************************************************************/ 1865/*****************************************************************************/
1072 1866
1073/* used to prepare libev internal fd's */ 1867#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1074/* this is not fork-safe */
1075inline_speed void
1076fd_intern (int fd)
1077{
1078#ifdef _WIN32
1079 unsigned long arg = 1;
1080 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1081#else
1082 fcntl (fd, F_SETFD, FD_CLOEXEC);
1083 fcntl (fd, F_SETFL, O_NONBLOCK);
1084#endif
1085}
1086 1868
1087static void noinline 1869static void noinline ecb_cold
1088evpipe_init (EV_P) 1870evpipe_init (EV_P)
1089{ 1871{
1090 if (!ev_is_active (&pipe_w)) 1872 if (!ev_is_active (&pipe_w))
1091 { 1873 {
1092#if EV_USE_EVENTFD 1874# if EV_USE_EVENTFD
1875 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1876 if (evfd < 0 && errno == EINVAL)
1093 if ((evfd = eventfd (0, 0)) >= 0) 1877 evfd = eventfd (0, 0);
1878
1879 if (evfd >= 0)
1094 { 1880 {
1095 evpipe [0] = -1; 1881 evpipe [0] = -1;
1096 fd_intern (evfd); 1882 fd_intern (evfd); /* doing it twice doesn't hurt */
1097 ev_io_set (&pipe_w, evfd, EV_READ); 1883 ev_io_set (&pipe_w, evfd, EV_READ);
1098 } 1884 }
1099 else 1885 else
1100#endif 1886# endif
1101 { 1887 {
1102 while (pipe (evpipe)) 1888 while (pipe (evpipe))
1103 ev_syserr ("(libev) error creating signal/async pipe"); 1889 ev_syserr ("(libev) error creating signal/async pipe");
1104 1890
1105 fd_intern (evpipe [0]); 1891 fd_intern (evpipe [0]);
… …
1110 ev_io_start (EV_A_ &pipe_w); 1896 ev_io_start (EV_A_ &pipe_w);
1111 ev_unref (EV_A); /* watcher should not keep loop alive */ 1897 ev_unref (EV_A); /* watcher should not keep loop alive */
1112 } 1898 }
1113} 1899}
1114 1900
1115inline_size void 1901inline_speed void
1116evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1902evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1117{ 1903{
1118 if (!*flag) 1904 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1905
1906 if (expect_true (*flag))
1907 return;
1908
1909 *flag = 1;
1910 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1911
1912 pipe_write_skipped = 1;
1913
1914 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1915
1916 if (pipe_write_wanted)
1119 { 1917 {
1918 int old_errno;
1919
1920 pipe_write_skipped = 0;
1921 ECB_MEMORY_FENCE_RELEASE;
1922
1120 int old_errno = errno; /* save errno because write might clobber it */ 1923 old_errno = errno; /* save errno because write will clobber it */
1121
1122 *flag = 1;
1123 1924
1124#if EV_USE_EVENTFD 1925#if EV_USE_EVENTFD
1125 if (evfd >= 0) 1926 if (evfd >= 0)
1126 { 1927 {
1127 uint64_t counter = 1; 1928 uint64_t counter = 1;
1128 write (evfd, &counter, sizeof (uint64_t)); 1929 write (evfd, &counter, sizeof (uint64_t));
1129 } 1930 }
1130 else 1931 else
1131#endif 1932#endif
1933 {
1934#ifdef _WIN32
1935 WSABUF buf;
1936 DWORD sent;
1937 buf.buf = &buf;
1938 buf.len = 1;
1939 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1940#else
1132 write (evpipe [1], &old_errno, 1); 1941 write (evpipe [1], &(evpipe [1]), 1);
1942#endif
1943 }
1133 1944
1134 errno = old_errno; 1945 errno = old_errno;
1135 } 1946 }
1136} 1947}
1137 1948
1138/* called whenever the libev signal pipe */ 1949/* called whenever the libev signal pipe */
1139/* got some events (signal, async) */ 1950/* got some events (signal, async) */
1140static void 1951static void
1141pipecb (EV_P_ ev_io *iow, int revents) 1952pipecb (EV_P_ ev_io *iow, int revents)
1142{ 1953{
1954 int i;
1955
1956 if (revents & EV_READ)
1957 {
1143#if EV_USE_EVENTFD 1958#if EV_USE_EVENTFD
1144 if (evfd >= 0) 1959 if (evfd >= 0)
1145 { 1960 {
1146 uint64_t counter; 1961 uint64_t counter;
1147 read (evfd, &counter, sizeof (uint64_t)); 1962 read (evfd, &counter, sizeof (uint64_t));
1148 } 1963 }
1149 else 1964 else
1150#endif 1965#endif
1151 { 1966 {
1152 char dummy; 1967 char dummy[4];
1968#ifdef _WIN32
1969 WSABUF buf;
1970 DWORD recvd;
1971 DWORD flags = 0;
1972 buf.buf = dummy;
1973 buf.len = sizeof (dummy);
1974 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
1975#else
1153 read (evpipe [0], &dummy, 1); 1976 read (evpipe [0], &dummy, sizeof (dummy));
1977#endif
1978 }
1979 }
1980
1981 pipe_write_skipped = 0;
1982
1983 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1984
1985#if EV_SIGNAL_ENABLE
1986 if (sig_pending)
1154 } 1987 {
1988 sig_pending = 0;
1155 1989
1156 if (gotsig && ev_is_default_loop (EV_A)) 1990 ECB_MEMORY_FENCE;
1157 {
1158 int signum;
1159 gotsig = 0;
1160 1991
1161 for (signum = signalmax; signum--; ) 1992 for (i = EV_NSIG - 1; i--; )
1162 if (signals [signum].gotsig) 1993 if (expect_false (signals [i].pending))
1163 ev_feed_signal_event (EV_A_ signum + 1); 1994 ev_feed_signal_event (EV_A_ i + 1);
1164 } 1995 }
1996#endif
1165 1997
1166#if EV_ASYNC_ENABLE 1998#if EV_ASYNC_ENABLE
1167 if (gotasync) 1999 if (async_pending)
1168 { 2000 {
1169 int i; 2001 async_pending = 0;
1170 gotasync = 0; 2002
2003 ECB_MEMORY_FENCE;
1171 2004
1172 for (i = asynccnt; i--; ) 2005 for (i = asynccnt; i--; )
1173 if (asyncs [i]->sent) 2006 if (asyncs [i]->sent)
1174 { 2007 {
1175 asyncs [i]->sent = 0; 2008 asyncs [i]->sent = 0;
2009 ECB_MEMORY_FENCE_RELEASE;
1176 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2010 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1177 } 2011 }
1178 } 2012 }
1179#endif 2013#endif
1180} 2014}
1181 2015
1182/*****************************************************************************/ 2016/*****************************************************************************/
1183 2017
2018void
2019ev_feed_signal (int signum) EV_THROW
2020{
2021#if EV_MULTIPLICITY
2022 EV_P = signals [signum - 1].loop;
2023
2024 if (!EV_A)
2025 return;
2026#endif
2027
2028 if (!ev_active (&pipe_w))
2029 return;
2030
2031 signals [signum - 1].pending = 1;
2032 evpipe_write (EV_A_ &sig_pending);
2033}
2034
1184static void 2035static void
1185ev_sighandler (int signum) 2036ev_sighandler (int signum)
1186{ 2037{
2038#ifdef _WIN32
2039 signal (signum, ev_sighandler);
2040#endif
2041
2042 ev_feed_signal (signum);
2043}
2044
2045void noinline
2046ev_feed_signal_event (EV_P_ int signum) EV_THROW
2047{
2048 WL w;
2049
2050 if (expect_false (signum <= 0 || signum > EV_NSIG))
2051 return;
2052
2053 --signum;
2054
1187#if EV_MULTIPLICITY 2055#if EV_MULTIPLICITY
1188 struct ev_loop *loop = &default_loop_struct; 2056 /* it is permissible to try to feed a signal to the wrong loop */
1189#endif 2057 /* or, likely more useful, feeding a signal nobody is waiting for */
1190 2058
1191#if _WIN32 2059 if (expect_false (signals [signum].loop != EV_A))
1192 signal (signum, ev_sighandler);
1193#endif
1194
1195 signals [signum - 1].gotsig = 1;
1196 evpipe_write (EV_A_ &gotsig);
1197}
1198
1199void noinline
1200ev_feed_signal_event (EV_P_ int signum)
1201{
1202 WL w;
1203
1204#if EV_MULTIPLICITY
1205 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1206#endif
1207
1208 --signum;
1209
1210 if (signum < 0 || signum >= signalmax)
1211 return; 2060 return;
2061#endif
1212 2062
1213 signals [signum].gotsig = 0; 2063 signals [signum].pending = 0;
2064 ECB_MEMORY_FENCE_RELEASE;
1214 2065
1215 for (w = signals [signum].head; w; w = w->next) 2066 for (w = signals [signum].head; w; w = w->next)
1216 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2067 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1217} 2068}
1218 2069
2070#if EV_USE_SIGNALFD
2071static void
2072sigfdcb (EV_P_ ev_io *iow, int revents)
2073{
2074 struct signalfd_siginfo si[2], *sip; /* these structs are big */
2075
2076 for (;;)
2077 {
2078 ssize_t res = read (sigfd, si, sizeof (si));
2079
2080 /* not ISO-C, as res might be -1, but works with SuS */
2081 for (sip = si; (char *)sip < (char *)si + res; ++sip)
2082 ev_feed_signal_event (EV_A_ sip->ssi_signo);
2083
2084 if (res < (ssize_t)sizeof (si))
2085 break;
2086 }
2087}
2088#endif
2089
2090#endif
2091
1219/*****************************************************************************/ 2092/*****************************************************************************/
1220 2093
2094#if EV_CHILD_ENABLE
1221static WL childs [EV_PID_HASHSIZE]; 2095static WL childs [EV_PID_HASHSIZE];
1222
1223#ifndef _WIN32
1224 2096
1225static ev_signal childev; 2097static ev_signal childev;
1226 2098
1227#ifndef WIFCONTINUED 2099#ifndef WIFCONTINUED
1228# define WIFCONTINUED(status) 0 2100# define WIFCONTINUED(status) 0
… …
1233child_reap (EV_P_ int chain, int pid, int status) 2105child_reap (EV_P_ int chain, int pid, int status)
1234{ 2106{
1235 ev_child *w; 2107 ev_child *w;
1236 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2108 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1237 2109
1238 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2110 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1239 { 2111 {
1240 if ((w->pid == pid || !w->pid) 2112 if ((w->pid == pid || !w->pid)
1241 && (!traced || (w->flags & 1))) 2113 && (!traced || (w->flags & 1)))
1242 { 2114 {
1243 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2115 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1268 /* make sure we are called again until all children have been reaped */ 2140 /* make sure we are called again until all children have been reaped */
1269 /* we need to do it this way so that the callback gets called before we continue */ 2141 /* we need to do it this way so that the callback gets called before we continue */
1270 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2142 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1271 2143
1272 child_reap (EV_A_ pid, pid, status); 2144 child_reap (EV_A_ pid, pid, status);
1273 if (EV_PID_HASHSIZE > 1) 2145 if ((EV_PID_HASHSIZE) > 1)
1274 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2146 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1275} 2147}
1276 2148
1277#endif 2149#endif
1278 2150
1279/*****************************************************************************/ 2151/*****************************************************************************/
1280 2152
2153#if EV_USE_IOCP
2154# include "ev_iocp.c"
2155#endif
1281#if EV_USE_PORT 2156#if EV_USE_PORT
1282# include "ev_port.c" 2157# include "ev_port.c"
1283#endif 2158#endif
1284#if EV_USE_KQUEUE 2159#if EV_USE_KQUEUE
1285# include "ev_kqueue.c" 2160# include "ev_kqueue.c"
… …
1292#endif 2167#endif
1293#if EV_USE_SELECT 2168#if EV_USE_SELECT
1294# include "ev_select.c" 2169# include "ev_select.c"
1295#endif 2170#endif
1296 2171
1297int 2172int ecb_cold
1298ev_version_major (void) 2173ev_version_major (void) EV_THROW
1299{ 2174{
1300 return EV_VERSION_MAJOR; 2175 return EV_VERSION_MAJOR;
1301} 2176}
1302 2177
1303int 2178int ecb_cold
1304ev_version_minor (void) 2179ev_version_minor (void) EV_THROW
1305{ 2180{
1306 return EV_VERSION_MINOR; 2181 return EV_VERSION_MINOR;
1307} 2182}
1308 2183
1309/* return true if we are running with elevated privileges and should ignore env variables */ 2184/* return true if we are running with elevated privileges and should ignore env variables */
1310int inline_size 2185int inline_size ecb_cold
1311enable_secure (void) 2186enable_secure (void)
1312{ 2187{
1313#ifdef _WIN32 2188#ifdef _WIN32
1314 return 0; 2189 return 0;
1315#else 2190#else
1316 return getuid () != geteuid () 2191 return getuid () != geteuid ()
1317 || getgid () != getegid (); 2192 || getgid () != getegid ();
1318#endif 2193#endif
1319} 2194}
1320 2195
1321unsigned int 2196unsigned int ecb_cold
1322ev_supported_backends (void) 2197ev_supported_backends (void) EV_THROW
1323{ 2198{
1324 unsigned int flags = 0; 2199 unsigned int flags = 0;
1325 2200
1326 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2201 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1327 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2202 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1330 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2205 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1331 2206
1332 return flags; 2207 return flags;
1333} 2208}
1334 2209
1335unsigned int 2210unsigned int ecb_cold
1336ev_recommended_backends (void) 2211ev_recommended_backends (void) EV_THROW
1337{ 2212{
1338 unsigned int flags = ev_supported_backends (); 2213 unsigned int flags = ev_supported_backends ();
1339 2214
1340#ifndef __NetBSD__ 2215#ifndef __NetBSD__
1341 /* kqueue is borked on everything but netbsd apparently */ 2216 /* kqueue is borked on everything but netbsd apparently */
… …
1345#ifdef __APPLE__ 2220#ifdef __APPLE__
1346 /* only select works correctly on that "unix-certified" platform */ 2221 /* only select works correctly on that "unix-certified" platform */
1347 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2222 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1348 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2223 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1349#endif 2224#endif
2225#ifdef __FreeBSD__
2226 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2227#endif
1350 2228
1351 return flags; 2229 return flags;
1352} 2230}
1353 2231
2232unsigned int ecb_cold
2233ev_embeddable_backends (void) EV_THROW
2234{
2235 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2236
2237 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2238 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2239 flags &= ~EVBACKEND_EPOLL;
2240
2241 return flags;
2242}
2243
1354unsigned int 2244unsigned int
1355ev_embeddable_backends (void) 2245ev_backend (EV_P) EV_THROW
1356{ 2246{
1357 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2247 return backend;
1358
1359 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1360 /* please fix it and tell me how to detect the fix */
1361 flags &= ~EVBACKEND_EPOLL;
1362
1363 return flags;
1364} 2248}
1365 2249
2250#if EV_FEATURE_API
1366unsigned int 2251unsigned int
1367ev_backend (EV_P) 2252ev_iteration (EV_P) EV_THROW
1368{ 2253{
1369 return backend; 2254 return loop_count;
1370} 2255}
1371 2256
1372#if EV_MINIMAL < 2
1373unsigned int 2257unsigned int
1374ev_loop_count (EV_P) 2258ev_depth (EV_P) EV_THROW
1375{
1376 return loop_count;
1377}
1378
1379unsigned int
1380ev_loop_depth (EV_P)
1381{ 2259{
1382 return loop_depth; 2260 return loop_depth;
1383} 2261}
1384 2262
1385void 2263void
1386ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2264ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1387{ 2265{
1388 io_blocktime = interval; 2266 io_blocktime = interval;
1389} 2267}
1390 2268
1391void 2269void
1392ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2270ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1393{ 2271{
1394 timeout_blocktime = interval; 2272 timeout_blocktime = interval;
1395} 2273}
1396 2274
1397void 2275void
1398ev_set_userdata (EV_P_ void *data) 2276ev_set_userdata (EV_P_ void *data) EV_THROW
1399{ 2277{
1400 userdata = data; 2278 userdata = data;
1401} 2279}
1402 2280
1403void * 2281void *
1404ev_userdata (EV_P) 2282ev_userdata (EV_P) EV_THROW
1405{ 2283{
1406 return userdata; 2284 return userdata;
1407} 2285}
1408 2286
2287void
1409void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2288ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
1410{ 2289{
1411 invoke_cb = invoke_pending_cb; 2290 invoke_cb = invoke_pending_cb;
1412} 2291}
1413 2292
1414void ev_set_blocking_cb (EV_P_ void (*suspend_cb_)(EV_P), void (*resume_cb_)(EV_P)) 2293void
2294ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1415{ 2295{
1416 suspend_cb = suspend_cb_; 2296 release_cb = release;
1417 resume_cb = resume_cb_; 2297 acquire_cb = acquire;
1418} 2298}
1419#endif 2299#endif
1420 2300
1421/* initialise a loop structure, must be zero-initialised */ 2301/* initialise a loop structure, must be zero-initialised */
1422static void noinline 2302static void noinline ecb_cold
1423loop_init (EV_P_ unsigned int flags) 2303loop_init (EV_P_ unsigned int flags) EV_THROW
1424{ 2304{
1425 if (!backend) 2305 if (!backend)
1426 { 2306 {
2307 origflags = flags;
2308
1427#if EV_USE_REALTIME 2309#if EV_USE_REALTIME
1428 if (!have_realtime) 2310 if (!have_realtime)
1429 { 2311 {
1430 struct timespec ts; 2312 struct timespec ts;
1431 2313
… …
1442 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2324 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1443 have_monotonic = 1; 2325 have_monotonic = 1;
1444 } 2326 }
1445#endif 2327#endif
1446 2328
1447 ev_rt_now = ev_time ();
1448 mn_now = get_clock ();
1449 now_floor = mn_now;
1450 rtmn_diff = ev_rt_now - mn_now;
1451#if EV_MINIMAL < 2
1452 invoke_cb = ev_invoke_pending;
1453#endif
1454
1455 io_blocktime = 0.;
1456 timeout_blocktime = 0.;
1457 backend = 0;
1458 backend_fd = -1;
1459 gotasync = 0;
1460#if EV_USE_INOTIFY
1461 fs_fd = -2;
1462#endif
1463
1464 /* pid check not overridable via env */ 2329 /* pid check not overridable via env */
1465#ifndef _WIN32 2330#ifndef _WIN32
1466 if (flags & EVFLAG_FORKCHECK) 2331 if (flags & EVFLAG_FORKCHECK)
1467 curpid = getpid (); 2332 curpid = getpid ();
1468#endif 2333#endif
… …
1470 if (!(flags & EVFLAG_NOENV) 2335 if (!(flags & EVFLAG_NOENV)
1471 && !enable_secure () 2336 && !enable_secure ()
1472 && getenv ("LIBEV_FLAGS")) 2337 && getenv ("LIBEV_FLAGS"))
1473 flags = atoi (getenv ("LIBEV_FLAGS")); 2338 flags = atoi (getenv ("LIBEV_FLAGS"));
1474 2339
1475 if (!(flags & 0x0000ffffU)) 2340 ev_rt_now = ev_time ();
2341 mn_now = get_clock ();
2342 now_floor = mn_now;
2343 rtmn_diff = ev_rt_now - mn_now;
2344#if EV_FEATURE_API
2345 invoke_cb = ev_invoke_pending;
2346#endif
2347
2348 io_blocktime = 0.;
2349 timeout_blocktime = 0.;
2350 backend = 0;
2351 backend_fd = -1;
2352 sig_pending = 0;
2353#if EV_ASYNC_ENABLE
2354 async_pending = 0;
2355#endif
2356 pipe_write_skipped = 0;
2357 pipe_write_wanted = 0;
2358#if EV_USE_INOTIFY
2359 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2360#endif
2361#if EV_USE_SIGNALFD
2362 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2363#endif
2364
2365 if (!(flags & EVBACKEND_MASK))
1476 flags |= ev_recommended_backends (); 2366 flags |= ev_recommended_backends ();
1477 2367
2368#if EV_USE_IOCP
2369 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2370#endif
1478#if EV_USE_PORT 2371#if EV_USE_PORT
1479 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2372 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1480#endif 2373#endif
1481#if EV_USE_KQUEUE 2374#if EV_USE_KQUEUE
1482 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2375 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1491 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2384 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1492#endif 2385#endif
1493 2386
1494 ev_prepare_init (&pending_w, pendingcb); 2387 ev_prepare_init (&pending_w, pendingcb);
1495 2388
2389#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1496 ev_init (&pipe_w, pipecb); 2390 ev_init (&pipe_w, pipecb);
1497 ev_set_priority (&pipe_w, EV_MAXPRI); 2391 ev_set_priority (&pipe_w, EV_MAXPRI);
2392#endif
1498 } 2393 }
1499} 2394}
1500 2395
1501/* free up a loop structure */ 2396/* free up a loop structure */
1502static void noinline 2397void ecb_cold
1503loop_destroy (EV_P) 2398ev_loop_destroy (EV_P)
1504{ 2399{
1505 int i; 2400 int i;
1506 2401
2402#if EV_MULTIPLICITY
2403 /* mimic free (0) */
2404 if (!EV_A)
2405 return;
2406#endif
2407
2408#if EV_CLEANUP_ENABLE
2409 /* queue cleanup watchers (and execute them) */
2410 if (expect_false (cleanupcnt))
2411 {
2412 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2413 EV_INVOKE_PENDING;
2414 }
2415#endif
2416
2417#if EV_CHILD_ENABLE
2418 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2419 {
2420 ev_ref (EV_A); /* child watcher */
2421 ev_signal_stop (EV_A_ &childev);
2422 }
2423#endif
2424
1507 if (ev_is_active (&pipe_w)) 2425 if (ev_is_active (&pipe_w))
1508 { 2426 {
1509 ev_ref (EV_A); /* signal watcher */ 2427 /*ev_ref (EV_A);*/
1510 ev_io_stop (EV_A_ &pipe_w); 2428 /*ev_io_stop (EV_A_ &pipe_w);*/
1511 2429
1512#if EV_USE_EVENTFD 2430#if EV_USE_EVENTFD
1513 if (evfd >= 0) 2431 if (evfd >= 0)
1514 close (evfd); 2432 close (evfd);
1515#endif 2433#endif
1516 2434
1517 if (evpipe [0] >= 0) 2435 if (evpipe [0] >= 0)
1518 { 2436 {
1519 close (evpipe [0]); 2437 EV_WIN32_CLOSE_FD (evpipe [0]);
1520 close (evpipe [1]); 2438 EV_WIN32_CLOSE_FD (evpipe [1]);
1521 } 2439 }
1522 } 2440 }
2441
2442#if EV_USE_SIGNALFD
2443 if (ev_is_active (&sigfd_w))
2444 close (sigfd);
2445#endif
1523 2446
1524#if EV_USE_INOTIFY 2447#if EV_USE_INOTIFY
1525 if (fs_fd >= 0) 2448 if (fs_fd >= 0)
1526 close (fs_fd); 2449 close (fs_fd);
1527#endif 2450#endif
1528 2451
1529 if (backend_fd >= 0) 2452 if (backend_fd >= 0)
1530 close (backend_fd); 2453 close (backend_fd);
1531 2454
2455#if EV_USE_IOCP
2456 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2457#endif
1532#if EV_USE_PORT 2458#if EV_USE_PORT
1533 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2459 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1534#endif 2460#endif
1535#if EV_USE_KQUEUE 2461#if EV_USE_KQUEUE
1536 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2462 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1551#if EV_IDLE_ENABLE 2477#if EV_IDLE_ENABLE
1552 array_free (idle, [i]); 2478 array_free (idle, [i]);
1553#endif 2479#endif
1554 } 2480 }
1555 2481
1556 ev_free (anfds); anfdmax = 0; 2482 ev_free (anfds); anfds = 0; anfdmax = 0;
1557 2483
1558 /* have to use the microsoft-never-gets-it-right macro */ 2484 /* have to use the microsoft-never-gets-it-right macro */
1559 array_free (rfeed, EMPTY); 2485 array_free (rfeed, EMPTY);
1560 array_free (fdchange, EMPTY); 2486 array_free (fdchange, EMPTY);
1561 array_free (timer, EMPTY); 2487 array_free (timer, EMPTY);
… …
1563 array_free (periodic, EMPTY); 2489 array_free (periodic, EMPTY);
1564#endif 2490#endif
1565#if EV_FORK_ENABLE 2491#if EV_FORK_ENABLE
1566 array_free (fork, EMPTY); 2492 array_free (fork, EMPTY);
1567#endif 2493#endif
2494#if EV_CLEANUP_ENABLE
2495 array_free (cleanup, EMPTY);
2496#endif
1568 array_free (prepare, EMPTY); 2497 array_free (prepare, EMPTY);
1569 array_free (check, EMPTY); 2498 array_free (check, EMPTY);
1570#if EV_ASYNC_ENABLE 2499#if EV_ASYNC_ENABLE
1571 array_free (async, EMPTY); 2500 array_free (async, EMPTY);
1572#endif 2501#endif
1573 2502
1574 backend = 0; 2503 backend = 0;
2504
2505#if EV_MULTIPLICITY
2506 if (ev_is_default_loop (EV_A))
2507#endif
2508 ev_default_loop_ptr = 0;
2509#if EV_MULTIPLICITY
2510 else
2511 ev_free (EV_A);
2512#endif
1575} 2513}
1576 2514
1577#if EV_USE_INOTIFY 2515#if EV_USE_INOTIFY
1578inline_size void infy_fork (EV_P); 2516inline_size void infy_fork (EV_P);
1579#endif 2517#endif
… …
1594 infy_fork (EV_A); 2532 infy_fork (EV_A);
1595#endif 2533#endif
1596 2534
1597 if (ev_is_active (&pipe_w)) 2535 if (ev_is_active (&pipe_w))
1598 { 2536 {
1599 /* this "locks" the handlers against writing to the pipe */ 2537 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1600 /* while we modify the fd vars */
1601 gotsig = 1;
1602#if EV_ASYNC_ENABLE
1603 gotasync = 1;
1604#endif
1605 2538
1606 ev_ref (EV_A); 2539 ev_ref (EV_A);
1607 ev_io_stop (EV_A_ &pipe_w); 2540 ev_io_stop (EV_A_ &pipe_w);
1608 2541
1609#if EV_USE_EVENTFD 2542#if EV_USE_EVENTFD
… …
1611 close (evfd); 2544 close (evfd);
1612#endif 2545#endif
1613 2546
1614 if (evpipe [0] >= 0) 2547 if (evpipe [0] >= 0)
1615 { 2548 {
1616 close (evpipe [0]); 2549 EV_WIN32_CLOSE_FD (evpipe [0]);
1617 close (evpipe [1]); 2550 EV_WIN32_CLOSE_FD (evpipe [1]);
1618 } 2551 }
1619 2552
2553#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1620 evpipe_init (EV_A); 2554 evpipe_init (EV_A);
1621 /* now iterate over everything, in case we missed something */ 2555 /* iterate over everything, in case we missed something before */
1622 pipecb (EV_A_ &pipe_w, EV_READ); 2556 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2557#endif
1623 } 2558 }
1624 2559
1625 postfork = 0; 2560 postfork = 0;
1626} 2561}
1627 2562
1628#if EV_MULTIPLICITY 2563#if EV_MULTIPLICITY
1629 2564
1630struct ev_loop * 2565struct ev_loop * ecb_cold
1631ev_loop_new (unsigned int flags) 2566ev_loop_new (unsigned int flags) EV_THROW
1632{ 2567{
1633 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2568 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1634 2569
1635 memset (loop, 0, sizeof (struct ev_loop)); 2570 memset (EV_A, 0, sizeof (struct ev_loop));
1636
1637 loop_init (EV_A_ flags); 2571 loop_init (EV_A_ flags);
1638 2572
1639 if (ev_backend (EV_A)) 2573 if (ev_backend (EV_A))
1640 return loop; 2574 return EV_A;
1641 2575
2576 ev_free (EV_A);
1642 return 0; 2577 return 0;
1643} 2578}
1644 2579
1645void
1646ev_loop_destroy (EV_P)
1647{
1648 loop_destroy (EV_A);
1649 ev_free (loop);
1650}
1651
1652void
1653ev_loop_fork (EV_P)
1654{
1655 postfork = 1; /* must be in line with ev_default_fork */
1656}
1657#endif /* multiplicity */ 2580#endif /* multiplicity */
1658 2581
1659#if EV_VERIFY 2582#if EV_VERIFY
1660static void noinline 2583static void noinline ecb_cold
1661verify_watcher (EV_P_ W w) 2584verify_watcher (EV_P_ W w)
1662{ 2585{
1663 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2586 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1664 2587
1665 if (w->pending) 2588 if (w->pending)
1666 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2589 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1667} 2590}
1668 2591
1669static void noinline 2592static void noinline ecb_cold
1670verify_heap (EV_P_ ANHE *heap, int N) 2593verify_heap (EV_P_ ANHE *heap, int N)
1671{ 2594{
1672 int i; 2595 int i;
1673 2596
1674 for (i = HEAP0; i < N + HEAP0; ++i) 2597 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1679 2602
1680 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2603 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1681 } 2604 }
1682} 2605}
1683 2606
1684static void noinline 2607static void noinline ecb_cold
1685array_verify (EV_P_ W *ws, int cnt) 2608array_verify (EV_P_ W *ws, int cnt)
1686{ 2609{
1687 while (cnt--) 2610 while (cnt--)
1688 { 2611 {
1689 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2612 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1690 verify_watcher (EV_A_ ws [cnt]); 2613 verify_watcher (EV_A_ ws [cnt]);
1691 } 2614 }
1692} 2615}
1693#endif 2616#endif
1694 2617
1695#if EV_MINIMAL < 2 2618#if EV_FEATURE_API
1696void 2619void ecb_cold
1697ev_loop_verify (EV_P) 2620ev_verify (EV_P) EV_THROW
1698{ 2621{
1699#if EV_VERIFY 2622#if EV_VERIFY
1700 int i; 2623 int i;
1701 WL w; 2624 WL w, w2;
1702 2625
1703 assert (activecnt >= -1); 2626 assert (activecnt >= -1);
1704 2627
1705 assert (fdchangemax >= fdchangecnt); 2628 assert (fdchangemax >= fdchangecnt);
1706 for (i = 0; i < fdchangecnt; ++i) 2629 for (i = 0; i < fdchangecnt; ++i)
1707 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2630 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1708 2631
1709 assert (anfdmax >= 0); 2632 assert (anfdmax >= 0);
1710 for (i = 0; i < anfdmax; ++i) 2633 for (i = 0; i < anfdmax; ++i)
2634 {
2635 int j = 0;
2636
1711 for (w = anfds [i].head; w; w = w->next) 2637 for (w = w2 = anfds [i].head; w; w = w->next)
1712 { 2638 {
1713 verify_watcher (EV_A_ (W)w); 2639 verify_watcher (EV_A_ (W)w);
2640
2641 if (j++ & 1)
2642 {
2643 assert (("libev: io watcher list contains a loop", w != w2));
2644 w2 = w2->next;
2645 }
2646
1714 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2647 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1715 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2648 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1716 } 2649 }
2650 }
1717 2651
1718 assert (timermax >= timercnt); 2652 assert (timermax >= timercnt);
1719 verify_heap (EV_A_ timers, timercnt); 2653 verify_heap (EV_A_ timers, timercnt);
1720 2654
1721#if EV_PERIODIC_ENABLE 2655#if EV_PERIODIC_ENABLE
… …
1736#if EV_FORK_ENABLE 2670#if EV_FORK_ENABLE
1737 assert (forkmax >= forkcnt); 2671 assert (forkmax >= forkcnt);
1738 array_verify (EV_A_ (W *)forks, forkcnt); 2672 array_verify (EV_A_ (W *)forks, forkcnt);
1739#endif 2673#endif
1740 2674
2675#if EV_CLEANUP_ENABLE
2676 assert (cleanupmax >= cleanupcnt);
2677 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2678#endif
2679
1741#if EV_ASYNC_ENABLE 2680#if EV_ASYNC_ENABLE
1742 assert (asyncmax >= asynccnt); 2681 assert (asyncmax >= asynccnt);
1743 array_verify (EV_A_ (W *)asyncs, asynccnt); 2682 array_verify (EV_A_ (W *)asyncs, asynccnt);
1744#endif 2683#endif
1745 2684
2685#if EV_PREPARE_ENABLE
1746 assert (preparemax >= preparecnt); 2686 assert (preparemax >= preparecnt);
1747 array_verify (EV_A_ (W *)prepares, preparecnt); 2687 array_verify (EV_A_ (W *)prepares, preparecnt);
2688#endif
1748 2689
2690#if EV_CHECK_ENABLE
1749 assert (checkmax >= checkcnt); 2691 assert (checkmax >= checkcnt);
1750 array_verify (EV_A_ (W *)checks, checkcnt); 2692 array_verify (EV_A_ (W *)checks, checkcnt);
2693#endif
1751 2694
1752# if 0 2695# if 0
2696#if EV_CHILD_ENABLE
1753 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2697 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1754 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2698 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2699#endif
1755# endif 2700# endif
1756#endif 2701#endif
1757} 2702}
1758#endif 2703#endif
1759 2704
1760#if EV_MULTIPLICITY 2705#if EV_MULTIPLICITY
1761struct ev_loop * 2706struct ev_loop * ecb_cold
1762ev_default_loop_init (unsigned int flags)
1763#else 2707#else
1764int 2708int
2709#endif
1765ev_default_loop (unsigned int flags) 2710ev_default_loop (unsigned int flags) EV_THROW
1766#endif
1767{ 2711{
1768 if (!ev_default_loop_ptr) 2712 if (!ev_default_loop_ptr)
1769 { 2713 {
1770#if EV_MULTIPLICITY 2714#if EV_MULTIPLICITY
1771 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2715 EV_P = ev_default_loop_ptr = &default_loop_struct;
1772#else 2716#else
1773 ev_default_loop_ptr = 1; 2717 ev_default_loop_ptr = 1;
1774#endif 2718#endif
1775 2719
1776 loop_init (EV_A_ flags); 2720 loop_init (EV_A_ flags);
1777 2721
1778 if (ev_backend (EV_A)) 2722 if (ev_backend (EV_A))
1779 { 2723 {
1780#ifndef _WIN32 2724#if EV_CHILD_ENABLE
1781 ev_signal_init (&childev, childcb, SIGCHLD); 2725 ev_signal_init (&childev, childcb, SIGCHLD);
1782 ev_set_priority (&childev, EV_MAXPRI); 2726 ev_set_priority (&childev, EV_MAXPRI);
1783 ev_signal_start (EV_A_ &childev); 2727 ev_signal_start (EV_A_ &childev);
1784 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2728 ev_unref (EV_A); /* child watcher should not keep loop alive */
1785#endif 2729#endif
… …
1790 2734
1791 return ev_default_loop_ptr; 2735 return ev_default_loop_ptr;
1792} 2736}
1793 2737
1794void 2738void
1795ev_default_destroy (void) 2739ev_loop_fork (EV_P) EV_THROW
1796{ 2740{
1797#if EV_MULTIPLICITY 2741 postfork = 1;
1798 struct ev_loop *loop = ev_default_loop_ptr;
1799#endif
1800
1801 ev_default_loop_ptr = 0;
1802
1803#ifndef _WIN32
1804 ev_ref (EV_A); /* child watcher */
1805 ev_signal_stop (EV_A_ &childev);
1806#endif
1807
1808 loop_destroy (EV_A);
1809}
1810
1811void
1812ev_default_fork (void)
1813{
1814#if EV_MULTIPLICITY
1815 struct ev_loop *loop = ev_default_loop_ptr;
1816#endif
1817
1818 postfork = 1; /* must be in line with ev_loop_fork */
1819} 2742}
1820 2743
1821/*****************************************************************************/ 2744/*****************************************************************************/
1822 2745
1823void 2746void
1824ev_invoke (EV_P_ void *w, int revents) 2747ev_invoke (EV_P_ void *w, int revents)
1825{ 2748{
1826 EV_CB_INVOKE ((W)w, revents); 2749 EV_CB_INVOKE ((W)w, revents);
1827} 2750}
1828 2751
2752unsigned int
2753ev_pending_count (EV_P) EV_THROW
2754{
2755 int pri;
2756 unsigned int count = 0;
2757
2758 for (pri = NUMPRI; pri--; )
2759 count += pendingcnt [pri];
2760
2761 return count;
2762}
2763
1829void noinline 2764void noinline
1830ev_invoke_pending (EV_P) 2765ev_invoke_pending (EV_P)
1831{ 2766{
1832 int pri; 2767 for (pendingpri = NUMPRI; pendingpri--; ) /* pendingpri is modified during the loop */
1833
1834 for (pri = NUMPRI; pri--; )
1835 while (pendingcnt [pri]) 2768 while (pendingcnt [pendingpri])
1836 { 2769 {
1837 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2770 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1838
1839 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1840 /* ^ this is no longer true, as pending_w could be here */
1841 2771
1842 p->w->pending = 0; 2772 p->w->pending = 0;
1843 EV_CB_INVOKE (p->w, p->events); 2773 EV_CB_INVOKE (p->w, p->events);
1844 EV_FREQUENT_CHECK; 2774 EV_FREQUENT_CHECK;
1845 } 2775 }
… …
1902 EV_FREQUENT_CHECK; 2832 EV_FREQUENT_CHECK;
1903 feed_reverse (EV_A_ (W)w); 2833 feed_reverse (EV_A_ (W)w);
1904 } 2834 }
1905 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2835 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1906 2836
1907 feed_reverse_done (EV_A_ EV_TIMEOUT); 2837 feed_reverse_done (EV_A_ EV_TIMER);
1908 } 2838 }
1909} 2839}
1910 2840
1911#if EV_PERIODIC_ENABLE 2841#if EV_PERIODIC_ENABLE
2842
2843static void noinline
2844periodic_recalc (EV_P_ ev_periodic *w)
2845{
2846 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2847 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2848
2849 /* the above almost always errs on the low side */
2850 while (at <= ev_rt_now)
2851 {
2852 ev_tstamp nat = at + w->interval;
2853
2854 /* when resolution fails us, we use ev_rt_now */
2855 if (expect_false (nat == at))
2856 {
2857 at = ev_rt_now;
2858 break;
2859 }
2860
2861 at = nat;
2862 }
2863
2864 ev_at (w) = at;
2865}
2866
1912/* make periodics pending */ 2867/* make periodics pending */
1913inline_size void 2868inline_size void
1914periodics_reify (EV_P) 2869periodics_reify (EV_P)
1915{ 2870{
1916 EV_FREQUENT_CHECK; 2871 EV_FREQUENT_CHECK;
1917 2872
1918 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2873 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1919 { 2874 {
1920 int feed_count = 0;
1921
1922 do 2875 do
1923 { 2876 {
1924 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2877 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1925 2878
1926 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 2879 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
1935 ANHE_at_cache (periodics [HEAP0]); 2888 ANHE_at_cache (periodics [HEAP0]);
1936 downheap (periodics, periodiccnt, HEAP0); 2889 downheap (periodics, periodiccnt, HEAP0);
1937 } 2890 }
1938 else if (w->interval) 2891 else if (w->interval)
1939 { 2892 {
1940 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2893 periodic_recalc (EV_A_ w);
1941 /* if next trigger time is not sufficiently in the future, put it there */
1942 /* this might happen because of floating point inexactness */
1943 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1944 {
1945 ev_at (w) += w->interval;
1946
1947 /* if interval is unreasonably low we might still have a time in the past */
1948 /* so correct this. this will make the periodic very inexact, but the user */
1949 /* has effectively asked to get triggered more often than possible */
1950 if (ev_at (w) < ev_rt_now)
1951 ev_at (w) = ev_rt_now;
1952 }
1953
1954 ANHE_at_cache (periodics [HEAP0]); 2894 ANHE_at_cache (periodics [HEAP0]);
1955 downheap (periodics, periodiccnt, HEAP0); 2895 downheap (periodics, periodiccnt, HEAP0);
1956 } 2896 }
1957 else 2897 else
1958 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2898 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1965 feed_reverse_done (EV_A_ EV_PERIODIC); 2905 feed_reverse_done (EV_A_ EV_PERIODIC);
1966 } 2906 }
1967} 2907}
1968 2908
1969/* simply recalculate all periodics */ 2909/* simply recalculate all periodics */
1970/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2910/* TODO: maybe ensure that at least one event happens when jumping forward? */
1971static void noinline 2911static void noinline ecb_cold
1972periodics_reschedule (EV_P) 2912periodics_reschedule (EV_P)
1973{ 2913{
1974 int i; 2914 int i;
1975 2915
1976 /* adjust periodics after time jump */ 2916 /* adjust periodics after time jump */
… …
1979 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2919 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1980 2920
1981 if (w->reschedule_cb) 2921 if (w->reschedule_cb)
1982 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2922 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1983 else if (w->interval) 2923 else if (w->interval)
1984 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2924 periodic_recalc (EV_A_ w);
1985 2925
1986 ANHE_at_cache (periodics [i]); 2926 ANHE_at_cache (periodics [i]);
1987 } 2927 }
1988 2928
1989 reheap (periodics, periodiccnt); 2929 reheap (periodics, periodiccnt);
1990} 2930}
1991#endif 2931#endif
1992 2932
1993/* adjust all timers by a given offset */ 2933/* adjust all timers by a given offset */
1994static void noinline 2934static void noinline ecb_cold
1995timers_reschedule (EV_P_ ev_tstamp adjust) 2935timers_reschedule (EV_P_ ev_tstamp adjust)
1996{ 2936{
1997 int i; 2937 int i;
1998 2938
1999 for (i = 0; i < timercnt; ++i) 2939 for (i = 0; i < timercnt; ++i)
… …
2003 ANHE_at_cache (*he); 2943 ANHE_at_cache (*he);
2004 } 2944 }
2005} 2945}
2006 2946
2007/* fetch new monotonic and realtime times from the kernel */ 2947/* fetch new monotonic and realtime times from the kernel */
2008/* also detetc if there was a timejump, and act accordingly */ 2948/* also detect if there was a timejump, and act accordingly */
2009inline_speed void 2949inline_speed void
2010time_update (EV_P_ ev_tstamp max_block) 2950time_update (EV_P_ ev_tstamp max_block)
2011{ 2951{
2012#if EV_USE_MONOTONIC 2952#if EV_USE_MONOTONIC
2013 if (expect_true (have_monotonic)) 2953 if (expect_true (have_monotonic))
… …
2036 * doesn't hurt either as we only do this on time-jumps or 2976 * doesn't hurt either as we only do this on time-jumps or
2037 * in the unlikely event of having been preempted here. 2977 * in the unlikely event of having been preempted here.
2038 */ 2978 */
2039 for (i = 4; --i; ) 2979 for (i = 4; --i; )
2040 { 2980 {
2981 ev_tstamp diff;
2041 rtmn_diff = ev_rt_now - mn_now; 2982 rtmn_diff = ev_rt_now - mn_now;
2042 2983
2984 diff = odiff - rtmn_diff;
2985
2043 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2986 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2044 return; /* all is well */ 2987 return; /* all is well */
2045 2988
2046 ev_rt_now = ev_time (); 2989 ev_rt_now = ev_time ();
2047 mn_now = get_clock (); 2990 mn_now = get_clock ();
2048 now_floor = mn_now; 2991 now_floor = mn_now;
… …
2070 3013
2071 mn_now = ev_rt_now; 3014 mn_now = ev_rt_now;
2072 } 3015 }
2073} 3016}
2074 3017
2075void 3018int
2076ev_loop (EV_P_ int flags) 3019ev_run (EV_P_ int flags)
2077{ 3020{
2078#if EV_MINIMAL < 2 3021#if EV_FEATURE_API
2079 ++loop_depth; 3022 ++loop_depth;
2080#endif 3023#endif
2081 3024
3025 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
3026
2082 loop_done = EVUNLOOP_CANCEL; 3027 loop_done = EVBREAK_CANCEL;
2083 3028
2084 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3029 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2085 3030
2086 do 3031 do
2087 { 3032 {
2088#if EV_VERIFY >= 2 3033#if EV_VERIFY >= 2
2089 ev_loop_verify (EV_A); 3034 ev_verify (EV_A);
2090#endif 3035#endif
2091 3036
2092#ifndef _WIN32 3037#ifndef _WIN32
2093 if (expect_false (curpid)) /* penalise the forking check even more */ 3038 if (expect_false (curpid)) /* penalise the forking check even more */
2094 if (expect_false (getpid () != curpid)) 3039 if (expect_false (getpid () != curpid))
… …
2106 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3051 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2107 EV_INVOKE_PENDING; 3052 EV_INVOKE_PENDING;
2108 } 3053 }
2109#endif 3054#endif
2110 3055
3056#if EV_PREPARE_ENABLE
2111 /* queue prepare watchers (and execute them) */ 3057 /* queue prepare watchers (and execute them) */
2112 if (expect_false (preparecnt)) 3058 if (expect_false (preparecnt))
2113 { 3059 {
2114 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3060 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2115 EV_INVOKE_PENDING; 3061 EV_INVOKE_PENDING;
2116 } 3062 }
3063#endif
3064
3065 if (expect_false (loop_done))
3066 break;
2117 3067
2118 /* we might have forked, so reify kernel state if necessary */ 3068 /* we might have forked, so reify kernel state if necessary */
2119 if (expect_false (postfork)) 3069 if (expect_false (postfork))
2120 loop_fork (EV_A); 3070 loop_fork (EV_A);
2121 3071
… …
2125 /* calculate blocking time */ 3075 /* calculate blocking time */
2126 { 3076 {
2127 ev_tstamp waittime = 0.; 3077 ev_tstamp waittime = 0.;
2128 ev_tstamp sleeptime = 0.; 3078 ev_tstamp sleeptime = 0.;
2129 3079
3080 /* remember old timestamp for io_blocktime calculation */
3081 ev_tstamp prev_mn_now = mn_now;
3082
3083 /* update time to cancel out callback processing overhead */
3084 time_update (EV_A_ 1e100);
3085
3086 /* from now on, we want a pipe-wake-up */
3087 pipe_write_wanted = 1;
3088
3089 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3090
2130 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3091 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2131 { 3092 {
2132 /* remember old timestamp for io_blocktime calculation */
2133 ev_tstamp prev_mn_now = mn_now;
2134
2135 /* update time to cancel out callback processing overhead */
2136 time_update (EV_A_ 1e100);
2137
2138 waittime = MAX_BLOCKTIME; 3093 waittime = MAX_BLOCKTIME;
2139 3094
2140 if (timercnt) 3095 if (timercnt)
2141 { 3096 {
2142 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3097 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2143 if (waittime > to) waittime = to; 3098 if (waittime > to) waittime = to;
2144 } 3099 }
2145 3100
2146#if EV_PERIODIC_ENABLE 3101#if EV_PERIODIC_ENABLE
2147 if (periodiccnt) 3102 if (periodiccnt)
2148 { 3103 {
2149 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3104 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2150 if (waittime > to) waittime = to; 3105 if (waittime > to) waittime = to;
2151 } 3106 }
2152#endif 3107#endif
2153 3108
2154 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3109 /* don't let timeouts decrease the waittime below timeout_blocktime */
2155 if (expect_false (waittime < timeout_blocktime)) 3110 if (expect_false (waittime < timeout_blocktime))
2156 waittime = timeout_blocktime; 3111 waittime = timeout_blocktime;
3112
3113 /* at this point, we NEED to wait, so we have to ensure */
3114 /* to pass a minimum nonzero value to the backend */
3115 if (expect_false (waittime < backend_mintime))
3116 waittime = backend_mintime;
2157 3117
2158 /* extra check because io_blocktime is commonly 0 */ 3118 /* extra check because io_blocktime is commonly 0 */
2159 if (expect_false (io_blocktime)) 3119 if (expect_false (io_blocktime))
2160 { 3120 {
2161 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3121 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2162 3122
2163 if (sleeptime > waittime - backend_fudge) 3123 if (sleeptime > waittime - backend_mintime)
2164 sleeptime = waittime - backend_fudge; 3124 sleeptime = waittime - backend_mintime;
2165 3125
2166 if (expect_true (sleeptime > 0.)) 3126 if (expect_true (sleeptime > 0.))
2167 { 3127 {
2168 ev_sleep (sleeptime); 3128 ev_sleep (sleeptime);
2169 waittime -= sleeptime; 3129 waittime -= sleeptime;
2170 } 3130 }
2171 } 3131 }
2172 } 3132 }
2173 3133
2174#if EV_MINIMAL < 2 3134#if EV_FEATURE_API
2175 ++loop_count; 3135 ++loop_count;
2176#endif 3136#endif
3137 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2177 backend_poll (EV_A_ waittime); 3138 backend_poll (EV_A_ waittime);
3139 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3140
3141 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3142
3143 ECB_MEMORY_FENCE_ACQUIRE;
3144 if (pipe_write_skipped)
3145 {
3146 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3147 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3148 }
3149
2178 3150
2179 /* update ev_rt_now, do magic */ 3151 /* update ev_rt_now, do magic */
2180 time_update (EV_A_ waittime + sleeptime); 3152 time_update (EV_A_ waittime + sleeptime);
2181 } 3153 }
2182 3154
… …
2189#if EV_IDLE_ENABLE 3161#if EV_IDLE_ENABLE
2190 /* queue idle watchers unless other events are pending */ 3162 /* queue idle watchers unless other events are pending */
2191 idle_reify (EV_A); 3163 idle_reify (EV_A);
2192#endif 3164#endif
2193 3165
3166#if EV_CHECK_ENABLE
2194 /* queue check watchers, to be executed first */ 3167 /* queue check watchers, to be executed first */
2195 if (expect_false (checkcnt)) 3168 if (expect_false (checkcnt))
2196 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3169 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3170#endif
2197 3171
2198 EV_INVOKE_PENDING; 3172 EV_INVOKE_PENDING;
2199 } 3173 }
2200 while (expect_true ( 3174 while (expect_true (
2201 activecnt 3175 activecnt
2202 && !loop_done 3176 && !loop_done
2203 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3177 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2204 )); 3178 ));
2205 3179
2206 if (loop_done == EVUNLOOP_ONE) 3180 if (loop_done == EVBREAK_ONE)
2207 loop_done = EVUNLOOP_CANCEL; 3181 loop_done = EVBREAK_CANCEL;
2208 3182
2209#if EV_MINIMAL < 2 3183#if EV_FEATURE_API
2210 --loop_depth; 3184 --loop_depth;
2211#endif 3185#endif
3186
3187 return activecnt;
2212} 3188}
2213 3189
2214void 3190void
2215ev_unloop (EV_P_ int how) 3191ev_break (EV_P_ int how) EV_THROW
2216{ 3192{
2217 loop_done = how; 3193 loop_done = how;
2218} 3194}
2219 3195
2220void 3196void
2221ev_ref (EV_P) 3197ev_ref (EV_P) EV_THROW
2222{ 3198{
2223 ++activecnt; 3199 ++activecnt;
2224} 3200}
2225 3201
2226void 3202void
2227ev_unref (EV_P) 3203ev_unref (EV_P) EV_THROW
2228{ 3204{
2229 --activecnt; 3205 --activecnt;
2230} 3206}
2231 3207
2232void 3208void
2233ev_now_update (EV_P) 3209ev_now_update (EV_P) EV_THROW
2234{ 3210{
2235 time_update (EV_A_ 1e100); 3211 time_update (EV_A_ 1e100);
2236} 3212}
2237 3213
2238void 3214void
2239ev_suspend (EV_P) 3215ev_suspend (EV_P) EV_THROW
2240{ 3216{
2241 ev_now_update (EV_A); 3217 ev_now_update (EV_A);
2242} 3218}
2243 3219
2244void 3220void
2245ev_resume (EV_P) 3221ev_resume (EV_P) EV_THROW
2246{ 3222{
2247 ev_tstamp mn_prev = mn_now; 3223 ev_tstamp mn_prev = mn_now;
2248 3224
2249 ev_now_update (EV_A); 3225 ev_now_update (EV_A);
2250 timers_reschedule (EV_A_ mn_now - mn_prev); 3226 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2267inline_size void 3243inline_size void
2268wlist_del (WL *head, WL elem) 3244wlist_del (WL *head, WL elem)
2269{ 3245{
2270 while (*head) 3246 while (*head)
2271 { 3247 {
2272 if (*head == elem) 3248 if (expect_true (*head == elem))
2273 { 3249 {
2274 *head = elem->next; 3250 *head = elem->next;
2275 return; 3251 break;
2276 } 3252 }
2277 3253
2278 head = &(*head)->next; 3254 head = &(*head)->next;
2279 } 3255 }
2280} 3256}
… …
2289 w->pending = 0; 3265 w->pending = 0;
2290 } 3266 }
2291} 3267}
2292 3268
2293int 3269int
2294ev_clear_pending (EV_P_ void *w) 3270ev_clear_pending (EV_P_ void *w) EV_THROW
2295{ 3271{
2296 W w_ = (W)w; 3272 W w_ = (W)w;
2297 int pending = w_->pending; 3273 int pending = w_->pending;
2298 3274
2299 if (expect_true (pending)) 3275 if (expect_true (pending))
… …
2332} 3308}
2333 3309
2334/*****************************************************************************/ 3310/*****************************************************************************/
2335 3311
2336void noinline 3312void noinline
2337ev_io_start (EV_P_ ev_io *w) 3313ev_io_start (EV_P_ ev_io *w) EV_THROW
2338{ 3314{
2339 int fd = w->fd; 3315 int fd = w->fd;
2340 3316
2341 if (expect_false (ev_is_active (w))) 3317 if (expect_false (ev_is_active (w)))
2342 return; 3318 return;
2343 3319
2344 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3320 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2345 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3321 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2346 3322
2347 EV_FREQUENT_CHECK; 3323 EV_FREQUENT_CHECK;
2348 3324
2349 ev_start (EV_A_ (W)w, 1); 3325 ev_start (EV_A_ (W)w, 1);
2350 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3326 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2351 wlist_add (&anfds[fd].head, (WL)w); 3327 wlist_add (&anfds[fd].head, (WL)w);
2352 3328
3329 /* common bug, apparently */
3330 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3331
2353 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); 3332 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2354 w->events &= ~EV__IOFDSET; 3333 w->events &= ~EV__IOFDSET;
2355 3334
2356 EV_FREQUENT_CHECK; 3335 EV_FREQUENT_CHECK;
2357} 3336}
2358 3337
2359void noinline 3338void noinline
2360ev_io_stop (EV_P_ ev_io *w) 3339ev_io_stop (EV_P_ ev_io *w) EV_THROW
2361{ 3340{
2362 clear_pending (EV_A_ (W)w); 3341 clear_pending (EV_A_ (W)w);
2363 if (expect_false (!ev_is_active (w))) 3342 if (expect_false (!ev_is_active (w)))
2364 return; 3343 return;
2365 3344
… …
2368 EV_FREQUENT_CHECK; 3347 EV_FREQUENT_CHECK;
2369 3348
2370 wlist_del (&anfds[w->fd].head, (WL)w); 3349 wlist_del (&anfds[w->fd].head, (WL)w);
2371 ev_stop (EV_A_ (W)w); 3350 ev_stop (EV_A_ (W)w);
2372 3351
2373 fd_change (EV_A_ w->fd, 1); 3352 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2374 3353
2375 EV_FREQUENT_CHECK; 3354 EV_FREQUENT_CHECK;
2376} 3355}
2377 3356
2378void noinline 3357void noinline
2379ev_timer_start (EV_P_ ev_timer *w) 3358ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2380{ 3359{
2381 if (expect_false (ev_is_active (w))) 3360 if (expect_false (ev_is_active (w)))
2382 return; 3361 return;
2383 3362
2384 ev_at (w) += mn_now; 3363 ev_at (w) += mn_now;
… …
2398 3377
2399 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3378 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2400} 3379}
2401 3380
2402void noinline 3381void noinline
2403ev_timer_stop (EV_P_ ev_timer *w) 3382ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2404{ 3383{
2405 clear_pending (EV_A_ (W)w); 3384 clear_pending (EV_A_ (W)w);
2406 if (expect_false (!ev_is_active (w))) 3385 if (expect_false (!ev_is_active (w)))
2407 return; 3386 return;
2408 3387
… …
2420 timers [active] = timers [timercnt + HEAP0]; 3399 timers [active] = timers [timercnt + HEAP0];
2421 adjustheap (timers, timercnt, active); 3400 adjustheap (timers, timercnt, active);
2422 } 3401 }
2423 } 3402 }
2424 3403
2425 EV_FREQUENT_CHECK;
2426
2427 ev_at (w) -= mn_now; 3404 ev_at (w) -= mn_now;
2428 3405
2429 ev_stop (EV_A_ (W)w); 3406 ev_stop (EV_A_ (W)w);
3407
3408 EV_FREQUENT_CHECK;
2430} 3409}
2431 3410
2432void noinline 3411void noinline
2433ev_timer_again (EV_P_ ev_timer *w) 3412ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2434{ 3413{
2435 EV_FREQUENT_CHECK; 3414 EV_FREQUENT_CHECK;
3415
3416 clear_pending (EV_A_ (W)w);
2436 3417
2437 if (ev_is_active (w)) 3418 if (ev_is_active (w))
2438 { 3419 {
2439 if (w->repeat) 3420 if (w->repeat)
2440 { 3421 {
… …
2452 } 3433 }
2453 3434
2454 EV_FREQUENT_CHECK; 3435 EV_FREQUENT_CHECK;
2455} 3436}
2456 3437
3438ev_tstamp
3439ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
3440{
3441 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3442}
3443
2457#if EV_PERIODIC_ENABLE 3444#if EV_PERIODIC_ENABLE
2458void noinline 3445void noinline
2459ev_periodic_start (EV_P_ ev_periodic *w) 3446ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2460{ 3447{
2461 if (expect_false (ev_is_active (w))) 3448 if (expect_false (ev_is_active (w)))
2462 return; 3449 return;
2463 3450
2464 if (w->reschedule_cb) 3451 if (w->reschedule_cb)
2465 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3452 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2466 else if (w->interval) 3453 else if (w->interval)
2467 { 3454 {
2468 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3455 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2469 /* this formula differs from the one in periodic_reify because we do not always round up */ 3456 periodic_recalc (EV_A_ w);
2470 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2471 } 3457 }
2472 else 3458 else
2473 ev_at (w) = w->offset; 3459 ev_at (w) = w->offset;
2474 3460
2475 EV_FREQUENT_CHECK; 3461 EV_FREQUENT_CHECK;
… …
2485 3471
2486 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3472 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2487} 3473}
2488 3474
2489void noinline 3475void noinline
2490ev_periodic_stop (EV_P_ ev_periodic *w) 3476ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2491{ 3477{
2492 clear_pending (EV_A_ (W)w); 3478 clear_pending (EV_A_ (W)w);
2493 if (expect_false (!ev_is_active (w))) 3479 if (expect_false (!ev_is_active (w)))
2494 return; 3480 return;
2495 3481
… …
2507 periodics [active] = periodics [periodiccnt + HEAP0]; 3493 periodics [active] = periodics [periodiccnt + HEAP0];
2508 adjustheap (periodics, periodiccnt, active); 3494 adjustheap (periodics, periodiccnt, active);
2509 } 3495 }
2510 } 3496 }
2511 3497
2512 EV_FREQUENT_CHECK;
2513
2514 ev_stop (EV_A_ (W)w); 3498 ev_stop (EV_A_ (W)w);
3499
3500 EV_FREQUENT_CHECK;
2515} 3501}
2516 3502
2517void noinline 3503void noinline
2518ev_periodic_again (EV_P_ ev_periodic *w) 3504ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2519{ 3505{
2520 /* TODO: use adjustheap and recalculation */ 3506 /* TODO: use adjustheap and recalculation */
2521 ev_periodic_stop (EV_A_ w); 3507 ev_periodic_stop (EV_A_ w);
2522 ev_periodic_start (EV_A_ w); 3508 ev_periodic_start (EV_A_ w);
2523} 3509}
… …
2525 3511
2526#ifndef SA_RESTART 3512#ifndef SA_RESTART
2527# define SA_RESTART 0 3513# define SA_RESTART 0
2528#endif 3514#endif
2529 3515
3516#if EV_SIGNAL_ENABLE
3517
2530void noinline 3518void noinline
2531ev_signal_start (EV_P_ ev_signal *w) 3519ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2532{ 3520{
2533#if EV_MULTIPLICITY
2534 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2535#endif
2536 if (expect_false (ev_is_active (w))) 3521 if (expect_false (ev_is_active (w)))
2537 return; 3522 return;
2538 3523
2539 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 3524 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2540 3525
2541 evpipe_init (EV_A); 3526#if EV_MULTIPLICITY
3527 assert (("libev: a signal must not be attached to two different loops",
3528 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2542 3529
2543 EV_FREQUENT_CHECK; 3530 signals [w->signum - 1].loop = EV_A;
3531#endif
2544 3532
3533 EV_FREQUENT_CHECK;
3534
3535#if EV_USE_SIGNALFD
3536 if (sigfd == -2)
2545 { 3537 {
2546#ifndef _WIN32 3538 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2547 sigset_t full, prev; 3539 if (sigfd < 0 && errno == EINVAL)
2548 sigfillset (&full); 3540 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2549 sigprocmask (SIG_SETMASK, &full, &prev);
2550#endif
2551 3541
2552 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 3542 if (sigfd >= 0)
3543 {
3544 fd_intern (sigfd); /* doing it twice will not hurt */
2553 3545
2554#ifndef _WIN32 3546 sigemptyset (&sigfd_set);
2555 sigprocmask (SIG_SETMASK, &prev, 0); 3547
2556#endif 3548 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3549 ev_set_priority (&sigfd_w, EV_MAXPRI);
3550 ev_io_start (EV_A_ &sigfd_w);
3551 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3552 }
2557 } 3553 }
3554
3555 if (sigfd >= 0)
3556 {
3557 /* TODO: check .head */
3558 sigaddset (&sigfd_set, w->signum);
3559 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3560
3561 signalfd (sigfd, &sigfd_set, 0);
3562 }
3563#endif
2558 3564
2559 ev_start (EV_A_ (W)w, 1); 3565 ev_start (EV_A_ (W)w, 1);
2560 wlist_add (&signals [w->signum - 1].head, (WL)w); 3566 wlist_add (&signals [w->signum - 1].head, (WL)w);
2561 3567
2562 if (!((WL)w)->next) 3568 if (!((WL)w)->next)
3569# if EV_USE_SIGNALFD
3570 if (sigfd < 0) /*TODO*/
3571# endif
2563 { 3572 {
2564#if _WIN32 3573# ifdef _WIN32
3574 evpipe_init (EV_A);
3575
2565 signal (w->signum, ev_sighandler); 3576 signal (w->signum, ev_sighandler);
2566#else 3577# else
2567 struct sigaction sa; 3578 struct sigaction sa;
3579
3580 evpipe_init (EV_A);
3581
2568 sa.sa_handler = ev_sighandler; 3582 sa.sa_handler = ev_sighandler;
2569 sigfillset (&sa.sa_mask); 3583 sigfillset (&sa.sa_mask);
2570 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3584 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2571 sigaction (w->signum, &sa, 0); 3585 sigaction (w->signum, &sa, 0);
3586
3587 if (origflags & EVFLAG_NOSIGMASK)
3588 {
3589 sigemptyset (&sa.sa_mask);
3590 sigaddset (&sa.sa_mask, w->signum);
3591 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3592 }
2572#endif 3593#endif
2573 } 3594 }
2574 3595
2575 EV_FREQUENT_CHECK; 3596 EV_FREQUENT_CHECK;
2576} 3597}
2577 3598
2578void noinline 3599void noinline
2579ev_signal_stop (EV_P_ ev_signal *w) 3600ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2580{ 3601{
2581 clear_pending (EV_A_ (W)w); 3602 clear_pending (EV_A_ (W)w);
2582 if (expect_false (!ev_is_active (w))) 3603 if (expect_false (!ev_is_active (w)))
2583 return; 3604 return;
2584 3605
… …
2586 3607
2587 wlist_del (&signals [w->signum - 1].head, (WL)w); 3608 wlist_del (&signals [w->signum - 1].head, (WL)w);
2588 ev_stop (EV_A_ (W)w); 3609 ev_stop (EV_A_ (W)w);
2589 3610
2590 if (!signals [w->signum - 1].head) 3611 if (!signals [w->signum - 1].head)
3612 {
3613#if EV_MULTIPLICITY
3614 signals [w->signum - 1].loop = 0; /* unattach from signal */
3615#endif
3616#if EV_USE_SIGNALFD
3617 if (sigfd >= 0)
3618 {
3619 sigset_t ss;
3620
3621 sigemptyset (&ss);
3622 sigaddset (&ss, w->signum);
3623 sigdelset (&sigfd_set, w->signum);
3624
3625 signalfd (sigfd, &sigfd_set, 0);
3626 sigprocmask (SIG_UNBLOCK, &ss, 0);
3627 }
3628 else
3629#endif
2591 signal (w->signum, SIG_DFL); 3630 signal (w->signum, SIG_DFL);
3631 }
2592 3632
2593 EV_FREQUENT_CHECK; 3633 EV_FREQUENT_CHECK;
2594} 3634}
3635
3636#endif
3637
3638#if EV_CHILD_ENABLE
2595 3639
2596void 3640void
2597ev_child_start (EV_P_ ev_child *w) 3641ev_child_start (EV_P_ ev_child *w) EV_THROW
2598{ 3642{
2599#if EV_MULTIPLICITY 3643#if EV_MULTIPLICITY
2600 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3644 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2601#endif 3645#endif
2602 if (expect_false (ev_is_active (w))) 3646 if (expect_false (ev_is_active (w)))
2603 return; 3647 return;
2604 3648
2605 EV_FREQUENT_CHECK; 3649 EV_FREQUENT_CHECK;
2606 3650
2607 ev_start (EV_A_ (W)w, 1); 3651 ev_start (EV_A_ (W)w, 1);
2608 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3652 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2609 3653
2610 EV_FREQUENT_CHECK; 3654 EV_FREQUENT_CHECK;
2611} 3655}
2612 3656
2613void 3657void
2614ev_child_stop (EV_P_ ev_child *w) 3658ev_child_stop (EV_P_ ev_child *w) EV_THROW
2615{ 3659{
2616 clear_pending (EV_A_ (W)w); 3660 clear_pending (EV_A_ (W)w);
2617 if (expect_false (!ev_is_active (w))) 3661 if (expect_false (!ev_is_active (w)))
2618 return; 3662 return;
2619 3663
2620 EV_FREQUENT_CHECK; 3664 EV_FREQUENT_CHECK;
2621 3665
2622 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3666 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2623 ev_stop (EV_A_ (W)w); 3667 ev_stop (EV_A_ (W)w);
2624 3668
2625 EV_FREQUENT_CHECK; 3669 EV_FREQUENT_CHECK;
2626} 3670}
3671
3672#endif
2627 3673
2628#if EV_STAT_ENABLE 3674#if EV_STAT_ENABLE
2629 3675
2630# ifdef _WIN32 3676# ifdef _WIN32
2631# undef lstat 3677# undef lstat
… …
2637#define MIN_STAT_INTERVAL 0.1074891 3683#define MIN_STAT_INTERVAL 0.1074891
2638 3684
2639static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3685static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2640 3686
2641#if EV_USE_INOTIFY 3687#if EV_USE_INOTIFY
2642# define EV_INOTIFY_BUFSIZE 8192 3688
3689/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3690# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2643 3691
2644static void noinline 3692static void noinline
2645infy_add (EV_P_ ev_stat *w) 3693infy_add (EV_P_ ev_stat *w)
2646{ 3694{
2647 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); 3695 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);
2648 3696
2649 if (w->wd < 0) 3697 if (w->wd >= 0)
3698 {
3699 struct statfs sfs;
3700
3701 /* now local changes will be tracked by inotify, but remote changes won't */
3702 /* unless the filesystem is known to be local, we therefore still poll */
3703 /* also do poll on <2.6.25, but with normal frequency */
3704
3705 if (!fs_2625)
3706 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3707 else if (!statfs (w->path, &sfs)
3708 && (sfs.f_type == 0x1373 /* devfs */
3709 || sfs.f_type == 0xEF53 /* ext2/3 */
3710 || sfs.f_type == 0x3153464a /* jfs */
3711 || sfs.f_type == 0x52654973 /* reiser3 */
3712 || sfs.f_type == 0x01021994 /* tempfs */
3713 || sfs.f_type == 0x58465342 /* xfs */))
3714 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3715 else
3716 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2650 { 3717 }
3718 else
3719 {
3720 /* can't use inotify, continue to stat */
2651 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3721 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2652 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2653 3722
2654 /* monitor some parent directory for speedup hints */ 3723 /* if path is not there, monitor some parent directory for speedup hints */
2655 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3724 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2656 /* but an efficiency issue only */ 3725 /* but an efficiency issue only */
2657 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3726 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2658 { 3727 {
2659 char path [4096]; 3728 char path [4096];
… …
2669 if (!pend || pend == path) 3738 if (!pend || pend == path)
2670 break; 3739 break;
2671 3740
2672 *pend = 0; 3741 *pend = 0;
2673 w->wd = inotify_add_watch (fs_fd, path, mask); 3742 w->wd = inotify_add_watch (fs_fd, path, mask);
2674 } 3743 }
2675 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3744 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2676 } 3745 }
2677 } 3746 }
2678 3747
2679 if (w->wd >= 0) 3748 if (w->wd >= 0)
2680 {
2681 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3749 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2682 3750
2683 /* now local changes will be tracked by inotify, but remote changes won't */ 3751 /* now re-arm timer, if required */
2684 /* unless the filesystem it known to be local, we therefore still poll */ 3752 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2685 /* also do poll on <2.6.25, but with normal frequency */
2686 struct statfs sfs;
2687
2688 if (fs_2625 && !statfs (w->path, &sfs))
2689 if (sfs.f_type == 0x1373 /* devfs */
2690 || sfs.f_type == 0xEF53 /* ext2/3 */
2691 || sfs.f_type == 0x3153464a /* jfs */
2692 || sfs.f_type == 0x52654973 /* reiser3 */
2693 || sfs.f_type == 0x01021994 /* tempfs */
2694 || sfs.f_type == 0x58465342 /* xfs */)
2695 return;
2696
2697 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2698 ev_timer_again (EV_A_ &w->timer); 3753 ev_timer_again (EV_A_ &w->timer);
2699 } 3754 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2700} 3755}
2701 3756
2702static void noinline 3757static void noinline
2703infy_del (EV_P_ ev_stat *w) 3758infy_del (EV_P_ ev_stat *w)
2704{ 3759{
… …
2707 3762
2708 if (wd < 0) 3763 if (wd < 0)
2709 return; 3764 return;
2710 3765
2711 w->wd = -2; 3766 w->wd = -2;
2712 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3767 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2713 wlist_del (&fs_hash [slot].head, (WL)w); 3768 wlist_del (&fs_hash [slot].head, (WL)w);
2714 3769
2715 /* remove this watcher, if others are watching it, they will rearm */ 3770 /* remove this watcher, if others are watching it, they will rearm */
2716 inotify_rm_watch (fs_fd, wd); 3771 inotify_rm_watch (fs_fd, wd);
2717} 3772}
… …
2719static void noinline 3774static void noinline
2720infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3775infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2721{ 3776{
2722 if (slot < 0) 3777 if (slot < 0)
2723 /* overflow, need to check for all hash slots */ 3778 /* overflow, need to check for all hash slots */
2724 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3779 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2725 infy_wd (EV_A_ slot, wd, ev); 3780 infy_wd (EV_A_ slot, wd, ev);
2726 else 3781 else
2727 { 3782 {
2728 WL w_; 3783 WL w_;
2729 3784
2730 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3785 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2731 { 3786 {
2732 ev_stat *w = (ev_stat *)w_; 3787 ev_stat *w = (ev_stat *)w_;
2733 w_ = w_->next; /* lets us remove this watcher and all before it */ 3788 w_ = w_->next; /* lets us remove this watcher and all before it */
2734 3789
2735 if (w->wd == wd || wd == -1) 3790 if (w->wd == wd || wd == -1)
2736 { 3791 {
2737 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3792 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2738 { 3793 {
2739 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3794 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2740 w->wd = -1; 3795 w->wd = -1;
2741 infy_add (EV_A_ w); /* re-add, no matter what */ 3796 infy_add (EV_A_ w); /* re-add, no matter what */
2742 } 3797 }
2743 3798
2744 stat_timer_cb (EV_A_ &w->timer, 0); 3799 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2749 3804
2750static void 3805static void
2751infy_cb (EV_P_ ev_io *w, int revents) 3806infy_cb (EV_P_ ev_io *w, int revents)
2752{ 3807{
2753 char buf [EV_INOTIFY_BUFSIZE]; 3808 char buf [EV_INOTIFY_BUFSIZE];
2754 struct inotify_event *ev = (struct inotify_event *)buf;
2755 int ofs; 3809 int ofs;
2756 int len = read (fs_fd, buf, sizeof (buf)); 3810 int len = read (fs_fd, buf, sizeof (buf));
2757 3811
2758 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3812 for (ofs = 0; ofs < len; )
3813 {
3814 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2759 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3815 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3816 ofs += sizeof (struct inotify_event) + ev->len;
3817 }
2760} 3818}
2761 3819
2762inline_size void 3820inline_size void ecb_cold
2763check_2625 (EV_P) 3821ev_check_2625 (EV_P)
2764{ 3822{
2765 /* kernels < 2.6.25 are borked 3823 /* kernels < 2.6.25 are borked
2766 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3824 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2767 */ 3825 */
2768 struct utsname buf; 3826 if (ev_linux_version () < 0x020619)
2769 int major, minor, micro;
2770
2771 if (uname (&buf))
2772 return; 3827 return;
2773 3828
2774 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2775 return;
2776
2777 if (major < 2
2778 || (major == 2 && minor < 6)
2779 || (major == 2 && minor == 6 && micro < 25))
2780 return;
2781
2782 fs_2625 = 1; 3829 fs_2625 = 1;
3830}
3831
3832inline_size int
3833infy_newfd (void)
3834{
3835#if defined IN_CLOEXEC && defined IN_NONBLOCK
3836 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3837 if (fd >= 0)
3838 return fd;
3839#endif
3840 return inotify_init ();
2783} 3841}
2784 3842
2785inline_size void 3843inline_size void
2786infy_init (EV_P) 3844infy_init (EV_P)
2787{ 3845{
2788 if (fs_fd != -2) 3846 if (fs_fd != -2)
2789 return; 3847 return;
2790 3848
2791 fs_fd = -1; 3849 fs_fd = -1;
2792 3850
2793 check_2625 (EV_A); 3851 ev_check_2625 (EV_A);
2794 3852
2795 fs_fd = inotify_init (); 3853 fs_fd = infy_newfd ();
2796 3854
2797 if (fs_fd >= 0) 3855 if (fs_fd >= 0)
2798 { 3856 {
3857 fd_intern (fs_fd);
2799 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3858 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2800 ev_set_priority (&fs_w, EV_MAXPRI); 3859 ev_set_priority (&fs_w, EV_MAXPRI);
2801 ev_io_start (EV_A_ &fs_w); 3860 ev_io_start (EV_A_ &fs_w);
3861 ev_unref (EV_A);
2802 } 3862 }
2803} 3863}
2804 3864
2805inline_size void 3865inline_size void
2806infy_fork (EV_P) 3866infy_fork (EV_P)
… …
2808 int slot; 3868 int slot;
2809 3869
2810 if (fs_fd < 0) 3870 if (fs_fd < 0)
2811 return; 3871 return;
2812 3872
3873 ev_ref (EV_A);
3874 ev_io_stop (EV_A_ &fs_w);
2813 close (fs_fd); 3875 close (fs_fd);
2814 fs_fd = inotify_init (); 3876 fs_fd = infy_newfd ();
2815 3877
3878 if (fs_fd >= 0)
3879 {
3880 fd_intern (fs_fd);
3881 ev_io_set (&fs_w, fs_fd, EV_READ);
3882 ev_io_start (EV_A_ &fs_w);
3883 ev_unref (EV_A);
3884 }
3885
2816 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3886 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2817 { 3887 {
2818 WL w_ = fs_hash [slot].head; 3888 WL w_ = fs_hash [slot].head;
2819 fs_hash [slot].head = 0; 3889 fs_hash [slot].head = 0;
2820 3890
2821 while (w_) 3891 while (w_)
… …
2826 w->wd = -1; 3896 w->wd = -1;
2827 3897
2828 if (fs_fd >= 0) 3898 if (fs_fd >= 0)
2829 infy_add (EV_A_ w); /* re-add, no matter what */ 3899 infy_add (EV_A_ w); /* re-add, no matter what */
2830 else 3900 else
3901 {
3902 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3903 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2831 ev_timer_again (EV_A_ &w->timer); 3904 ev_timer_again (EV_A_ &w->timer);
3905 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3906 }
2832 } 3907 }
2833 } 3908 }
2834} 3909}
2835 3910
2836#endif 3911#endif
… …
2840#else 3915#else
2841# define EV_LSTAT(p,b) lstat (p, b) 3916# define EV_LSTAT(p,b) lstat (p, b)
2842#endif 3917#endif
2843 3918
2844void 3919void
2845ev_stat_stat (EV_P_ ev_stat *w) 3920ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
2846{ 3921{
2847 if (lstat (w->path, &w->attr) < 0) 3922 if (lstat (w->path, &w->attr) < 0)
2848 w->attr.st_nlink = 0; 3923 w->attr.st_nlink = 0;
2849 else if (!w->attr.st_nlink) 3924 else if (!w->attr.st_nlink)
2850 w->attr.st_nlink = 1; 3925 w->attr.st_nlink = 1;
… …
2853static void noinline 3928static void noinline
2854stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3929stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2855{ 3930{
2856 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3931 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2857 3932
2858 /* we copy this here each the time so that */ 3933 ev_statdata prev = w->attr;
2859 /* prev has the old value when the callback gets invoked */
2860 w->prev = w->attr;
2861 ev_stat_stat (EV_A_ w); 3934 ev_stat_stat (EV_A_ w);
2862 3935
2863 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3936 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2864 if ( 3937 if (
2865 w->prev.st_dev != w->attr.st_dev 3938 prev.st_dev != w->attr.st_dev
2866 || w->prev.st_ino != w->attr.st_ino 3939 || prev.st_ino != w->attr.st_ino
2867 || w->prev.st_mode != w->attr.st_mode 3940 || prev.st_mode != w->attr.st_mode
2868 || w->prev.st_nlink != w->attr.st_nlink 3941 || prev.st_nlink != w->attr.st_nlink
2869 || w->prev.st_uid != w->attr.st_uid 3942 || prev.st_uid != w->attr.st_uid
2870 || w->prev.st_gid != w->attr.st_gid 3943 || prev.st_gid != w->attr.st_gid
2871 || w->prev.st_rdev != w->attr.st_rdev 3944 || prev.st_rdev != w->attr.st_rdev
2872 || w->prev.st_size != w->attr.st_size 3945 || prev.st_size != w->attr.st_size
2873 || w->prev.st_atime != w->attr.st_atime 3946 || prev.st_atime != w->attr.st_atime
2874 || w->prev.st_mtime != w->attr.st_mtime 3947 || prev.st_mtime != w->attr.st_mtime
2875 || w->prev.st_ctime != w->attr.st_ctime 3948 || prev.st_ctime != w->attr.st_ctime
2876 ) { 3949 ) {
3950 /* we only update w->prev on actual differences */
3951 /* in case we test more often than invoke the callback, */
3952 /* to ensure that prev is always different to attr */
3953 w->prev = prev;
3954
2877 #if EV_USE_INOTIFY 3955 #if EV_USE_INOTIFY
2878 if (fs_fd >= 0) 3956 if (fs_fd >= 0)
2879 { 3957 {
2880 infy_del (EV_A_ w); 3958 infy_del (EV_A_ w);
2881 infy_add (EV_A_ w); 3959 infy_add (EV_A_ w);
… …
2886 ev_feed_event (EV_A_ w, EV_STAT); 3964 ev_feed_event (EV_A_ w, EV_STAT);
2887 } 3965 }
2888} 3966}
2889 3967
2890void 3968void
2891ev_stat_start (EV_P_ ev_stat *w) 3969ev_stat_start (EV_P_ ev_stat *w) EV_THROW
2892{ 3970{
2893 if (expect_false (ev_is_active (w))) 3971 if (expect_false (ev_is_active (w)))
2894 return; 3972 return;
2895 3973
2896 ev_stat_stat (EV_A_ w); 3974 ev_stat_stat (EV_A_ w);
… …
2906 3984
2907 if (fs_fd >= 0) 3985 if (fs_fd >= 0)
2908 infy_add (EV_A_ w); 3986 infy_add (EV_A_ w);
2909 else 3987 else
2910#endif 3988#endif
3989 {
2911 ev_timer_again (EV_A_ &w->timer); 3990 ev_timer_again (EV_A_ &w->timer);
3991 ev_unref (EV_A);
3992 }
2912 3993
2913 ev_start (EV_A_ (W)w, 1); 3994 ev_start (EV_A_ (W)w, 1);
2914 3995
2915 EV_FREQUENT_CHECK; 3996 EV_FREQUENT_CHECK;
2916} 3997}
2917 3998
2918void 3999void
2919ev_stat_stop (EV_P_ ev_stat *w) 4000ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
2920{ 4001{
2921 clear_pending (EV_A_ (W)w); 4002 clear_pending (EV_A_ (W)w);
2922 if (expect_false (!ev_is_active (w))) 4003 if (expect_false (!ev_is_active (w)))
2923 return; 4004 return;
2924 4005
2925 EV_FREQUENT_CHECK; 4006 EV_FREQUENT_CHECK;
2926 4007
2927#if EV_USE_INOTIFY 4008#if EV_USE_INOTIFY
2928 infy_del (EV_A_ w); 4009 infy_del (EV_A_ w);
2929#endif 4010#endif
4011
4012 if (ev_is_active (&w->timer))
4013 {
4014 ev_ref (EV_A);
2930 ev_timer_stop (EV_A_ &w->timer); 4015 ev_timer_stop (EV_A_ &w->timer);
4016 }
2931 4017
2932 ev_stop (EV_A_ (W)w); 4018 ev_stop (EV_A_ (W)w);
2933 4019
2934 EV_FREQUENT_CHECK; 4020 EV_FREQUENT_CHECK;
2935} 4021}
2936#endif 4022#endif
2937 4023
2938#if EV_IDLE_ENABLE 4024#if EV_IDLE_ENABLE
2939void 4025void
2940ev_idle_start (EV_P_ ev_idle *w) 4026ev_idle_start (EV_P_ ev_idle *w) EV_THROW
2941{ 4027{
2942 if (expect_false (ev_is_active (w))) 4028 if (expect_false (ev_is_active (w)))
2943 return; 4029 return;
2944 4030
2945 pri_adjust (EV_A_ (W)w); 4031 pri_adjust (EV_A_ (W)w);
… …
2958 4044
2959 EV_FREQUENT_CHECK; 4045 EV_FREQUENT_CHECK;
2960} 4046}
2961 4047
2962void 4048void
2963ev_idle_stop (EV_P_ ev_idle *w) 4049ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
2964{ 4050{
2965 clear_pending (EV_A_ (W)w); 4051 clear_pending (EV_A_ (W)w);
2966 if (expect_false (!ev_is_active (w))) 4052 if (expect_false (!ev_is_active (w)))
2967 return; 4053 return;
2968 4054
… …
2980 4066
2981 EV_FREQUENT_CHECK; 4067 EV_FREQUENT_CHECK;
2982} 4068}
2983#endif 4069#endif
2984 4070
4071#if EV_PREPARE_ENABLE
2985void 4072void
2986ev_prepare_start (EV_P_ ev_prepare *w) 4073ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
2987{ 4074{
2988 if (expect_false (ev_is_active (w))) 4075 if (expect_false (ev_is_active (w)))
2989 return; 4076 return;
2990 4077
2991 EV_FREQUENT_CHECK; 4078 EV_FREQUENT_CHECK;
… …
2996 4083
2997 EV_FREQUENT_CHECK; 4084 EV_FREQUENT_CHECK;
2998} 4085}
2999 4086
3000void 4087void
3001ev_prepare_stop (EV_P_ ev_prepare *w) 4088ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3002{ 4089{
3003 clear_pending (EV_A_ (W)w); 4090 clear_pending (EV_A_ (W)w);
3004 if (expect_false (!ev_is_active (w))) 4091 if (expect_false (!ev_is_active (w)))
3005 return; 4092 return;
3006 4093
… …
3015 4102
3016 ev_stop (EV_A_ (W)w); 4103 ev_stop (EV_A_ (W)w);
3017 4104
3018 EV_FREQUENT_CHECK; 4105 EV_FREQUENT_CHECK;
3019} 4106}
4107#endif
3020 4108
4109#if EV_CHECK_ENABLE
3021void 4110void
3022ev_check_start (EV_P_ ev_check *w) 4111ev_check_start (EV_P_ ev_check *w) EV_THROW
3023{ 4112{
3024 if (expect_false (ev_is_active (w))) 4113 if (expect_false (ev_is_active (w)))
3025 return; 4114 return;
3026 4115
3027 EV_FREQUENT_CHECK; 4116 EV_FREQUENT_CHECK;
… …
3032 4121
3033 EV_FREQUENT_CHECK; 4122 EV_FREQUENT_CHECK;
3034} 4123}
3035 4124
3036void 4125void
3037ev_check_stop (EV_P_ ev_check *w) 4126ev_check_stop (EV_P_ ev_check *w) EV_THROW
3038{ 4127{
3039 clear_pending (EV_A_ (W)w); 4128 clear_pending (EV_A_ (W)w);
3040 if (expect_false (!ev_is_active (w))) 4129 if (expect_false (!ev_is_active (w)))
3041 return; 4130 return;
3042 4131
… …
3051 4140
3052 ev_stop (EV_A_ (W)w); 4141 ev_stop (EV_A_ (W)w);
3053 4142
3054 EV_FREQUENT_CHECK; 4143 EV_FREQUENT_CHECK;
3055} 4144}
4145#endif
3056 4146
3057#if EV_EMBED_ENABLE 4147#if EV_EMBED_ENABLE
3058void noinline 4148void noinline
3059ev_embed_sweep (EV_P_ ev_embed *w) 4149ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3060{ 4150{
3061 ev_loop (w->other, EVLOOP_NONBLOCK); 4151 ev_run (w->other, EVRUN_NOWAIT);
3062} 4152}
3063 4153
3064static void 4154static void
3065embed_io_cb (EV_P_ ev_io *io, int revents) 4155embed_io_cb (EV_P_ ev_io *io, int revents)
3066{ 4156{
3067 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4157 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3068 4158
3069 if (ev_cb (w)) 4159 if (ev_cb (w))
3070 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4160 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3071 else 4161 else
3072 ev_loop (w->other, EVLOOP_NONBLOCK); 4162 ev_run (w->other, EVRUN_NOWAIT);
3073} 4163}
3074 4164
3075static void 4165static void
3076embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4166embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3077{ 4167{
3078 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4168 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3079 4169
3080 { 4170 {
3081 struct ev_loop *loop = w->other; 4171 EV_P = w->other;
3082 4172
3083 while (fdchangecnt) 4173 while (fdchangecnt)
3084 { 4174 {
3085 fd_reify (EV_A); 4175 fd_reify (EV_A);
3086 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4176 ev_run (EV_A_ EVRUN_NOWAIT);
3087 } 4177 }
3088 } 4178 }
3089} 4179}
3090 4180
3091static void 4181static void
… …
3094 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 4184 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3095 4185
3096 ev_embed_stop (EV_A_ w); 4186 ev_embed_stop (EV_A_ w);
3097 4187
3098 { 4188 {
3099 struct ev_loop *loop = w->other; 4189 EV_P = w->other;
3100 4190
3101 ev_loop_fork (EV_A); 4191 ev_loop_fork (EV_A);
3102 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4192 ev_run (EV_A_ EVRUN_NOWAIT);
3103 } 4193 }
3104 4194
3105 ev_embed_start (EV_A_ w); 4195 ev_embed_start (EV_A_ w);
3106} 4196}
3107 4197
… …
3112 ev_idle_stop (EV_A_ idle); 4202 ev_idle_stop (EV_A_ idle);
3113} 4203}
3114#endif 4204#endif
3115 4205
3116void 4206void
3117ev_embed_start (EV_P_ ev_embed *w) 4207ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3118{ 4208{
3119 if (expect_false (ev_is_active (w))) 4209 if (expect_false (ev_is_active (w)))
3120 return; 4210 return;
3121 4211
3122 { 4212 {
3123 struct ev_loop *loop = w->other; 4213 EV_P = w->other;
3124 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4214 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3125 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4215 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3126 } 4216 }
3127 4217
3128 EV_FREQUENT_CHECK; 4218 EV_FREQUENT_CHECK;
… …
3143 4233
3144 EV_FREQUENT_CHECK; 4234 EV_FREQUENT_CHECK;
3145} 4235}
3146 4236
3147void 4237void
3148ev_embed_stop (EV_P_ ev_embed *w) 4238ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3149{ 4239{
3150 clear_pending (EV_A_ (W)w); 4240 clear_pending (EV_A_ (W)w);
3151 if (expect_false (!ev_is_active (w))) 4241 if (expect_false (!ev_is_active (w)))
3152 return; 4242 return;
3153 4243
… …
3155 4245
3156 ev_io_stop (EV_A_ &w->io); 4246 ev_io_stop (EV_A_ &w->io);
3157 ev_prepare_stop (EV_A_ &w->prepare); 4247 ev_prepare_stop (EV_A_ &w->prepare);
3158 ev_fork_stop (EV_A_ &w->fork); 4248 ev_fork_stop (EV_A_ &w->fork);
3159 4249
4250 ev_stop (EV_A_ (W)w);
4251
3160 EV_FREQUENT_CHECK; 4252 EV_FREQUENT_CHECK;
3161} 4253}
3162#endif 4254#endif
3163 4255
3164#if EV_FORK_ENABLE 4256#if EV_FORK_ENABLE
3165void 4257void
3166ev_fork_start (EV_P_ ev_fork *w) 4258ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3167{ 4259{
3168 if (expect_false (ev_is_active (w))) 4260 if (expect_false (ev_is_active (w)))
3169 return; 4261 return;
3170 4262
3171 EV_FREQUENT_CHECK; 4263 EV_FREQUENT_CHECK;
… …
3176 4268
3177 EV_FREQUENT_CHECK; 4269 EV_FREQUENT_CHECK;
3178} 4270}
3179 4271
3180void 4272void
3181ev_fork_stop (EV_P_ ev_fork *w) 4273ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3182{ 4274{
3183 clear_pending (EV_A_ (W)w); 4275 clear_pending (EV_A_ (W)w);
3184 if (expect_false (!ev_is_active (w))) 4276 if (expect_false (!ev_is_active (w)))
3185 return; 4277 return;
3186 4278
… …
3197 4289
3198 EV_FREQUENT_CHECK; 4290 EV_FREQUENT_CHECK;
3199} 4291}
3200#endif 4292#endif
3201 4293
4294#if EV_CLEANUP_ENABLE
4295void
4296ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4297{
4298 if (expect_false (ev_is_active (w)))
4299 return;
4300
4301 EV_FREQUENT_CHECK;
4302
4303 ev_start (EV_A_ (W)w, ++cleanupcnt);
4304 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4305 cleanups [cleanupcnt - 1] = w;
4306
4307 /* cleanup watchers should never keep a refcount on the loop */
4308 ev_unref (EV_A);
4309 EV_FREQUENT_CHECK;
4310}
4311
4312void
4313ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4314{
4315 clear_pending (EV_A_ (W)w);
4316 if (expect_false (!ev_is_active (w)))
4317 return;
4318
4319 EV_FREQUENT_CHECK;
4320 ev_ref (EV_A);
4321
4322 {
4323 int active = ev_active (w);
4324
4325 cleanups [active - 1] = cleanups [--cleanupcnt];
4326 ev_active (cleanups [active - 1]) = active;
4327 }
4328
4329 ev_stop (EV_A_ (W)w);
4330
4331 EV_FREQUENT_CHECK;
4332}
4333#endif
4334
3202#if EV_ASYNC_ENABLE 4335#if EV_ASYNC_ENABLE
3203void 4336void
3204ev_async_start (EV_P_ ev_async *w) 4337ev_async_start (EV_P_ ev_async *w) EV_THROW
3205{ 4338{
3206 if (expect_false (ev_is_active (w))) 4339 if (expect_false (ev_is_active (w)))
3207 return; 4340 return;
4341
4342 w->sent = 0;
3208 4343
3209 evpipe_init (EV_A); 4344 evpipe_init (EV_A);
3210 4345
3211 EV_FREQUENT_CHECK; 4346 EV_FREQUENT_CHECK;
3212 4347
… …
3216 4351
3217 EV_FREQUENT_CHECK; 4352 EV_FREQUENT_CHECK;
3218} 4353}
3219 4354
3220void 4355void
3221ev_async_stop (EV_P_ ev_async *w) 4356ev_async_stop (EV_P_ ev_async *w) EV_THROW
3222{ 4357{
3223 clear_pending (EV_A_ (W)w); 4358 clear_pending (EV_A_ (W)w);
3224 if (expect_false (!ev_is_active (w))) 4359 if (expect_false (!ev_is_active (w)))
3225 return; 4360 return;
3226 4361
… …
3237 4372
3238 EV_FREQUENT_CHECK; 4373 EV_FREQUENT_CHECK;
3239} 4374}
3240 4375
3241void 4376void
3242ev_async_send (EV_P_ ev_async *w) 4377ev_async_send (EV_P_ ev_async *w) EV_THROW
3243{ 4378{
3244 w->sent = 1; 4379 w->sent = 1;
3245 evpipe_write (EV_A_ &gotasync); 4380 evpipe_write (EV_A_ &async_pending);
3246} 4381}
3247#endif 4382#endif
3248 4383
3249/*****************************************************************************/ 4384/*****************************************************************************/
3250 4385
… …
3284 4419
3285 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4420 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3286} 4421}
3287 4422
3288void 4423void
3289ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4424ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3290{ 4425{
3291 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4426 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3292 4427
3293 if (expect_false (!once)) 4428 if (expect_false (!once))
3294 { 4429 {
3295 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4430 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3296 return; 4431 return;
3297 } 4432 }
3298 4433
3299 once->cb = cb; 4434 once->cb = cb;
3300 once->arg = arg; 4435 once->arg = arg;
… …
3315} 4450}
3316 4451
3317/*****************************************************************************/ 4452/*****************************************************************************/
3318 4453
3319#if EV_WALK_ENABLE 4454#if EV_WALK_ENABLE
3320void 4455void ecb_cold
3321ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4456ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3322{ 4457{
3323 int i, j; 4458 int i, j;
3324 ev_watcher_list *wl, *wn; 4459 ev_watcher_list *wl, *wn;
3325 4460
3326 if (types & (EV_IO | EV_EMBED)) 4461 if (types & (EV_IO | EV_EMBED))
… …
3369 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4504 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3370#endif 4505#endif
3371 4506
3372#if EV_IDLE_ENABLE 4507#if EV_IDLE_ENABLE
3373 if (types & EV_IDLE) 4508 if (types & EV_IDLE)
3374 for (j = NUMPRI; i--; ) 4509 for (j = NUMPRI; j--; )
3375 for (i = idlecnt [j]; i--; ) 4510 for (i = idlecnt [j]; i--; )
3376 cb (EV_A_ EV_IDLE, idles [j][i]); 4511 cb (EV_A_ EV_IDLE, idles [j][i]);
3377#endif 4512#endif
3378 4513
3379#if EV_FORK_ENABLE 4514#if EV_FORK_ENABLE
… …
3387 if (types & EV_ASYNC) 4522 if (types & EV_ASYNC)
3388 for (i = asynccnt; i--; ) 4523 for (i = asynccnt; i--; )
3389 cb (EV_A_ EV_ASYNC, asyncs [i]); 4524 cb (EV_A_ EV_ASYNC, asyncs [i]);
3390#endif 4525#endif
3391 4526
4527#if EV_PREPARE_ENABLE
3392 if (types & EV_PREPARE) 4528 if (types & EV_PREPARE)
3393 for (i = preparecnt; i--; ) 4529 for (i = preparecnt; i--; )
3394#if EV_EMBED_ENABLE 4530# if EV_EMBED_ENABLE
3395 if (ev_cb (prepares [i]) != embed_prepare_cb) 4531 if (ev_cb (prepares [i]) != embed_prepare_cb)
3396#endif 4532# endif
3397 cb (EV_A_ EV_PREPARE, prepares [i]); 4533 cb (EV_A_ EV_PREPARE, prepares [i]);
4534#endif
3398 4535
4536#if EV_CHECK_ENABLE
3399 if (types & EV_CHECK) 4537 if (types & EV_CHECK)
3400 for (i = checkcnt; i--; ) 4538 for (i = checkcnt; i--; )
3401 cb (EV_A_ EV_CHECK, checks [i]); 4539 cb (EV_A_ EV_CHECK, checks [i]);
4540#endif
3402 4541
4542#if EV_SIGNAL_ENABLE
3403 if (types & EV_SIGNAL) 4543 if (types & EV_SIGNAL)
3404 for (i = 0; i < signalmax; ++i) 4544 for (i = 0; i < EV_NSIG - 1; ++i)
3405 for (wl = signals [i].head; wl; ) 4545 for (wl = signals [i].head; wl; )
3406 { 4546 {
3407 wn = wl->next; 4547 wn = wl->next;
3408 cb (EV_A_ EV_SIGNAL, wl); 4548 cb (EV_A_ EV_SIGNAL, wl);
3409 wl = wn; 4549 wl = wn;
3410 } 4550 }
4551#endif
3411 4552
4553#if EV_CHILD_ENABLE
3412 if (types & EV_CHILD) 4554 if (types & EV_CHILD)
3413 for (i = EV_PID_HASHSIZE; i--; ) 4555 for (i = (EV_PID_HASHSIZE); i--; )
3414 for (wl = childs [i]; wl; ) 4556 for (wl = childs [i]; wl; )
3415 { 4557 {
3416 wn = wl->next; 4558 wn = wl->next;
3417 cb (EV_A_ EV_CHILD, wl); 4559 cb (EV_A_ EV_CHILD, wl);
3418 wl = wn; 4560 wl = wn;
3419 } 4561 }
4562#endif
3420/* EV_STAT 0x00001000 /* stat data changed */ 4563/* EV_STAT 0x00001000 /* stat data changed */
3421/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4564/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3422} 4565}
3423#endif 4566#endif
3424 4567
3425#if EV_MULTIPLICITY 4568#if EV_MULTIPLICITY
3426 #include "ev_wrap.h" 4569 #include "ev_wrap.h"
3427#endif 4570#endif
3428 4571
3429#ifdef __cplusplus
3430}
3431#endif
3432

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