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Comparing libev/ev.c (file contents):
Revision 1.264 by root, Mon Oct 13 23:20:12 2008 UTC vs.
Revision 1.429 by root, Tue May 8 15:50:49 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 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
51 47
48#if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
52#endif
53
54# if HAVE_CLOCK_SYSCALL
55# ifndef EV_USE_CLOCK_SYSCALL
56# define EV_USE_CLOCK_SYSCALL 1
57# ifndef EV_USE_REALTIME
58# define EV_USE_REALTIME 0
59# endif
60# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 1
62# endif
63# endif
64# elif !defined EV_USE_CLOCK_SYSCALL
65# define EV_USE_CLOCK_SYSCALL 0
66# endif
67
52# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
53# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
54# define EV_USE_MONOTONIC 1 70# define EV_USE_MONOTONIC 1
55# endif 71# endif
56# ifndef EV_USE_REALTIME 72# ifndef EV_USE_REALTIME
57# define EV_USE_REALTIME 1 73# define EV_USE_REALTIME 0
58# endif 74# endif
59# else 75# else
60# ifndef EV_USE_MONOTONIC 76# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 0 77# define EV_USE_MONOTONIC 0
62# endif 78# endif
63# ifndef EV_USE_REALTIME 79# ifndef EV_USE_REALTIME
64# define EV_USE_REALTIME 0 80# define EV_USE_REALTIME 0
65# endif 81# endif
66# endif 82# endif
67 83
84# if HAVE_NANOSLEEP
68# ifndef EV_USE_NANOSLEEP 85# ifndef EV_USE_NANOSLEEP
69# if HAVE_NANOSLEEP
70# define EV_USE_NANOSLEEP 1 86# define EV_USE_NANOSLEEP EV_FEATURE_OS
87# endif
71# else 88# else
89# undef EV_USE_NANOSLEEP
72# 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
73# endif 96# endif
97# else
98# undef EV_USE_SELECT
99# define EV_USE_SELECT 0
74# endif 100# endif
75 101
102# if HAVE_POLL && HAVE_POLL_H
76# ifndef EV_USE_SELECT 103# ifndef EV_USE_POLL
77# if HAVE_SELECT && HAVE_SYS_SELECT_H 104# define EV_USE_POLL EV_FEATURE_BACKENDS
78# define EV_USE_SELECT 1
79# else
80# define EV_USE_SELECT 0
81# endif 105# endif
82# endif
83
84# ifndef EV_USE_POLL
85# if HAVE_POLL && HAVE_POLL_H
86# define EV_USE_POLL 1
87# else 106# else
107# undef EV_USE_POLL
88# define EV_USE_POLL 0 108# define EV_USE_POLL 0
89# endif
90# endif 109# endif
91 110
92# ifndef EV_USE_EPOLL
93# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 111# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
94# define EV_USE_EPOLL 1 112# ifndef EV_USE_EPOLL
95# else 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
96# define EV_USE_EPOLL 0
97# endif 114# endif
115# else
116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0
98# endif 118# endif
99 119
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
100# ifndef EV_USE_KQUEUE 121# ifndef EV_USE_KQUEUE
101# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
102# define EV_USE_KQUEUE 1
103# else
104# define EV_USE_KQUEUE 0
105# endif 123# endif
124# else
125# undef EV_USE_KQUEUE
126# define EV_USE_KQUEUE 0
106# endif 127# endif
107 128
108# ifndef EV_USE_PORT
109# if HAVE_PORT_H && HAVE_PORT_CREATE 129# if HAVE_PORT_H && HAVE_PORT_CREATE
110# define EV_USE_PORT 1 130# ifndef EV_USE_PORT
111# else 131# define EV_USE_PORT EV_FEATURE_BACKENDS
112# define EV_USE_PORT 0
113# endif 132# endif
133# else
134# undef EV_USE_PORT
135# define EV_USE_PORT 0
114# endif 136# endif
115 137
116# ifndef EV_USE_INOTIFY
117# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 138# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
118# define EV_USE_INOTIFY 1 139# ifndef EV_USE_INOTIFY
119# else
120# define EV_USE_INOTIFY 0 140# define EV_USE_INOTIFY EV_FEATURE_OS
121# endif 141# endif
142# else
143# undef EV_USE_INOTIFY
144# define EV_USE_INOTIFY 0
122# endif 145# endif
123 146
147# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
124# ifndef EV_USE_EVENTFD 148# ifndef EV_USE_SIGNALFD
125# if HAVE_EVENTFD 149# define EV_USE_SIGNALFD EV_FEATURE_OS
126# define EV_USE_EVENTFD 1
127# else
128# define EV_USE_EVENTFD 0
129# 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
130# endif 163# endif
131 164
132#endif 165#endif
133 166
134#include <math.h>
135#include <stdlib.h> 167#include <stdlib.h>
168#include <string.h>
136#include <fcntl.h> 169#include <fcntl.h>
137#include <stddef.h> 170#include <stddef.h>
138 171
139#include <stdio.h> 172#include <stdio.h>
140 173
141#include <assert.h> 174#include <assert.h>
142#include <errno.h> 175#include <errno.h>
143#include <sys/types.h> 176#include <sys/types.h>
144#include <time.h> 177#include <time.h>
178#include <limits.h>
145 179
146#include <signal.h> 180#include <signal.h>
147 181
148#ifdef EV_H 182#ifdef EV_H
149# include EV_H 183# include EV_H
150#else 184#else
151# 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
152#endif 197#endif
153 198
154#ifndef _WIN32 199#ifndef _WIN32
155# include <sys/time.h> 200# include <sys/time.h>
156# include <sys/wait.h> 201# include <sys/wait.h>
157# include <unistd.h> 202# include <unistd.h>
158#else 203#else
159# include <io.h> 204# include <io.h>
160# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
161# include <windows.h> 206# include <windows.h>
207# include <winsock2.h>
162# ifndef EV_SELECT_IS_WINSOCKET 208# ifndef EV_SELECT_IS_WINSOCKET
163# define EV_SELECT_IS_WINSOCKET 1 209# define EV_SELECT_IS_WINSOCKET 1
164# endif 210# endif
211# undef EV_AVOID_STDIO
165#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
166 221
167/* 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 */
168 223
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
255
256#ifndef EV_USE_CLOCK_SYSCALL
257# if __linux && __GLIBC__ >= 2
258# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
259# else
260# define EV_USE_CLOCK_SYSCALL 0
261# endif
262#endif
263
169#ifndef EV_USE_MONOTONIC 264#ifndef EV_USE_MONOTONIC
170# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 265# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
171# define EV_USE_MONOTONIC 1 266# define EV_USE_MONOTONIC EV_FEATURE_OS
172# else 267# else
173# define EV_USE_MONOTONIC 0 268# define EV_USE_MONOTONIC 0
174# endif 269# endif
175#endif 270#endif
176 271
177#ifndef EV_USE_REALTIME 272#ifndef EV_USE_REALTIME
178# define EV_USE_REALTIME 0 273# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
179#endif 274#endif
180 275
181#ifndef EV_USE_NANOSLEEP 276#ifndef EV_USE_NANOSLEEP
182# if _POSIX_C_SOURCE >= 199309L 277# if _POSIX_C_SOURCE >= 199309L
183# define EV_USE_NANOSLEEP 1 278# define EV_USE_NANOSLEEP EV_FEATURE_OS
184# else 279# else
185# define EV_USE_NANOSLEEP 0 280# define EV_USE_NANOSLEEP 0
186# endif 281# endif
187#endif 282#endif
188 283
189#ifndef EV_USE_SELECT 284#ifndef EV_USE_SELECT
190# define EV_USE_SELECT 1 285# define EV_USE_SELECT EV_FEATURE_BACKENDS
191#endif 286#endif
192 287
193#ifndef EV_USE_POLL 288#ifndef EV_USE_POLL
194# ifdef _WIN32 289# ifdef _WIN32
195# define EV_USE_POLL 0 290# define EV_USE_POLL 0
196# else 291# else
197# define EV_USE_POLL 1 292# define EV_USE_POLL EV_FEATURE_BACKENDS
198# endif 293# endif
199#endif 294#endif
200 295
201#ifndef EV_USE_EPOLL 296#ifndef EV_USE_EPOLL
202# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 297# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
203# define EV_USE_EPOLL 1 298# define EV_USE_EPOLL EV_FEATURE_BACKENDS
204# else 299# else
205# define EV_USE_EPOLL 0 300# define EV_USE_EPOLL 0
206# endif 301# endif
207#endif 302#endif
208 303
… …
214# define EV_USE_PORT 0 309# define EV_USE_PORT 0
215#endif 310#endif
216 311
217#ifndef EV_USE_INOTIFY 312#ifndef EV_USE_INOTIFY
218# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 313# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
219# define EV_USE_INOTIFY 1 314# define EV_USE_INOTIFY EV_FEATURE_OS
220# else 315# else
221# define EV_USE_INOTIFY 0 316# define EV_USE_INOTIFY 0
222# endif 317# endif
223#endif 318#endif
224 319
225#ifndef EV_PID_HASHSIZE 320#ifndef EV_PID_HASHSIZE
226# if EV_MINIMAL 321# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
227# define EV_PID_HASHSIZE 1
228# else
229# define EV_PID_HASHSIZE 16
230# endif
231#endif 322#endif
232 323
233#ifndef EV_INOTIFY_HASHSIZE 324#ifndef EV_INOTIFY_HASHSIZE
234# if EV_MINIMAL 325# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
235# define EV_INOTIFY_HASHSIZE 1
236# else
237# define EV_INOTIFY_HASHSIZE 16
238# endif
239#endif 326#endif
240 327
241#ifndef EV_USE_EVENTFD 328#ifndef EV_USE_EVENTFD
242# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 329# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
243# define EV_USE_EVENTFD 1 330# define EV_USE_EVENTFD EV_FEATURE_OS
244# else 331# else
245# 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
246# endif 341# endif
247#endif 342#endif
248 343
249#if 0 /* debugging */ 344#if 0 /* debugging */
250# define EV_VERIFY 3 345# define EV_VERIFY 3
251# define EV_USE_4HEAP 1 346# define EV_USE_4HEAP 1
252# define EV_HEAP_CACHE_AT 1 347# define EV_HEAP_CACHE_AT 1
253#endif 348#endif
254 349
255#ifndef EV_VERIFY 350#ifndef EV_VERIFY
256# define EV_VERIFY !EV_MINIMAL 351# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
257#endif 352#endif
258 353
259#ifndef EV_USE_4HEAP 354#ifndef EV_USE_4HEAP
260# define EV_USE_4HEAP !EV_MINIMAL 355# define EV_USE_4HEAP EV_FEATURE_DATA
261#endif 356#endif
262 357
263#ifndef EV_HEAP_CACHE_AT 358#ifndef EV_HEAP_CACHE_AT
264# define EV_HEAP_CACHE_AT !EV_MINIMAL 359# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
360#endif
361
362/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
363/* which makes programs even slower. might work on other unices, too. */
364#if EV_USE_CLOCK_SYSCALL
365# include <sys/syscall.h>
366# ifdef SYS_clock_gettime
367# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
368# undef EV_USE_MONOTONIC
369# define EV_USE_MONOTONIC 1
370# else
371# undef EV_USE_CLOCK_SYSCALL
372# define EV_USE_CLOCK_SYSCALL 0
373# endif
265#endif 374#endif
266 375
267/* 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 */
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
268 383
269#ifndef CLOCK_MONOTONIC 384#ifndef CLOCK_MONOTONIC
270# undef EV_USE_MONOTONIC 385# undef EV_USE_MONOTONIC
271# define EV_USE_MONOTONIC 0 386# define EV_USE_MONOTONIC 0
272#endif 387#endif
… …
280# undef EV_USE_INOTIFY 395# undef EV_USE_INOTIFY
281# define EV_USE_INOTIFY 0 396# define EV_USE_INOTIFY 0
282#endif 397#endif
283 398
284#if !EV_USE_NANOSLEEP 399#if !EV_USE_NANOSLEEP
285# ifndef _WIN32 400/* hp-ux has it in sys/time.h, which we unconditionally include above */
401# if !defined _WIN32 && !defined __hpux
286# include <sys/select.h> 402# include <sys/select.h>
287# endif 403# endif
288#endif 404#endif
289 405
290#if EV_USE_INOTIFY 406#if EV_USE_INOTIFY
291# include <sys/utsname.h> 407# include <sys/statfs.h>
292# include <sys/inotify.h> 408# include <sys/inotify.h>
293/* 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 */
294# ifndef IN_DONT_FOLLOW 410# ifndef IN_DONT_FOLLOW
295# undef EV_USE_INOTIFY 411# undef EV_USE_INOTIFY
296# define EV_USE_INOTIFY 0 412# define EV_USE_INOTIFY 0
… …
302#endif 418#endif
303 419
304#if EV_USE_EVENTFD 420#if EV_USE_EVENTFD
305/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 421/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
306# include <stdint.h> 422# include <stdint.h>
307# ifdef __cplusplus 423# ifndef EFD_NONBLOCK
308extern "C" { 424# define EFD_NONBLOCK O_NONBLOCK
309# endif 425# endif
310int eventfd (unsigned int initval, int flags); 426# ifndef EFD_CLOEXEC
311# ifdef __cplusplus 427# ifdef O_CLOEXEC
312} 428# define EFD_CLOEXEC O_CLOEXEC
429# else
430# define EFD_CLOEXEC 02000000
431# endif
313# endif 432# endif
433EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
434#endif
435
436#if EV_USE_SIGNALFD
437/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
438# include <stdint.h>
439# ifndef SFD_NONBLOCK
440# define SFD_NONBLOCK O_NONBLOCK
441# endif
442# ifndef SFD_CLOEXEC
443# ifdef O_CLOEXEC
444# define SFD_CLOEXEC O_CLOEXEC
445# else
446# define SFD_CLOEXEC 02000000
447# endif
448# endif
449EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
450
451struct signalfd_siginfo
452{
453 uint32_t ssi_signo;
454 char pad[128 - sizeof (uint32_t)];
455};
314#endif 456#endif
315 457
316/**/ 458/**/
317 459
318#if EV_VERIFY >= 3 460#if EV_VERIFY >= 3
319# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 461# define EV_FREQUENT_CHECK ev_verify (EV_A)
320#else 462#else
321# define EV_FREQUENT_CHECK do { } while (0) 463# define EV_FREQUENT_CHECK do { } while (0)
322#endif 464#endif
323 465
324/* 466/*
325 * This is used to avoid floating point rounding problems. 467 * This is used to work around floating point rounding problems.
326 * It is added to ev_rt_now when scheduling periodics
327 * to ensure progress, time-wise, even when rounding
328 * errors are against us.
329 * This value is good at least till the year 4000. 468 * This value is good at least till the year 4000.
330 * Better solutions welcome.
331 */ 469 */
332#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 470#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
471/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
333 472
334#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 473#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
335#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 474#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
336/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
337 475
476#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
477#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
478
479/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
480/* ECB.H BEGIN */
481/*
482 * libecb - http://software.schmorp.de/pkg/libecb
483 *
484 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de>
485 * Copyright (©) 2011 Emanuele Giaquinta
486 * All rights reserved.
487 *
488 * Redistribution and use in source and binary forms, with or without modifica-
489 * tion, are permitted provided that the following conditions are met:
490 *
491 * 1. Redistributions of source code must retain the above copyright notice,
492 * this list of conditions and the following disclaimer.
493 *
494 * 2. Redistributions in binary form must reproduce the above copyright
495 * notice, this list of conditions and the following disclaimer in the
496 * documentation and/or other materials provided with the distribution.
497 *
498 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
499 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
500 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
501 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
502 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
503 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
504 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
505 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
506 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
507 * OF THE POSSIBILITY OF SUCH DAMAGE.
508 */
509
510#ifndef ECB_H
511#define ECB_H
512
513#ifdef _WIN32
514 typedef signed char int8_t;
515 typedef unsigned char uint8_t;
516 typedef signed short int16_t;
517 typedef unsigned short uint16_t;
518 typedef signed int int32_t;
519 typedef unsigned int uint32_t;
338#if __GNUC__ >= 4 520 #if __GNUC__
339# define expect(expr,value) __builtin_expect ((expr),(value)) 521 typedef signed long long int64_t;
340# define noinline __attribute__ ((noinline)) 522 typedef unsigned long long uint64_t;
523 #else /* _MSC_VER || __BORLANDC__ */
524 typedef signed __int64 int64_t;
525 typedef unsigned __int64 uint64_t;
526 #endif
341#else 527#else
342# define expect(expr,value) (expr) 528 #include <inttypes.h>
343# define noinline
344# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
345# define inline
346# endif 529#endif
530
531/* many compilers define _GNUC_ to some versions but then only implement
532 * what their idiot authors think are the "more important" extensions,
533 * causing enormous grief in return for some better fake benchmark numbers.
534 * or so.
535 * we try to detect these and simply assume they are not gcc - if they have
536 * an issue with that they should have done it right in the first place.
537 */
538#ifndef ECB_GCC_VERSION
539 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
540 #define ECB_GCC_VERSION(major,minor) 0
541 #else
542 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
347#endif 543 #endif
544#endif
348 545
546/*****************************************************************************/
547
548/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
549/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
550
551#if ECB_NO_THREADS
552# define ECB_NO_SMP 1
553#endif
554
555#if ECB_NO_THREADS || ECB_NO_SMP
556 #define ECB_MEMORY_FENCE do { } while (0)
557#endif
558
559#ifndef ECB_MEMORY_FENCE
560 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
561 #if __i386 || __i386__
562 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
563 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */
564 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */
565 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
566 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
567 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
568 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */
569 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
570 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
571 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
572 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
573 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
574 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
575 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
576 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
577 #elif __sparc || __sparc__
578 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad | " : : : "memory")
579 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
580 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
581 #elif defined __s390__ || defined __s390x__
582 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
583 #elif defined __mips__
584 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
585 #elif defined __alpha__
586 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
587 #endif
588 #endif
589#endif
590
591#ifndef ECB_MEMORY_FENCE
592 #if ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
593 #define ECB_MEMORY_FENCE __sync_synchronize ()
594 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */
595 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */
596 #elif _MSC_VER >= 1400 /* VC++ 2005 */
597 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
598 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
599 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
600 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
601 #elif defined _WIN32
602 #include <WinNT.h>
603 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
604 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
605 #include <mbarrier.h>
606 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
607 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
608 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
609 #elif __xlC__
610 #define ECB_MEMORY_FENCE __sync ()
611 #endif
612#endif
613
614#ifndef ECB_MEMORY_FENCE
615 #if !ECB_AVOID_PTHREADS
616 /*
617 * if you get undefined symbol references to pthread_mutex_lock,
618 * or failure to find pthread.h, then you should implement
619 * the ECB_MEMORY_FENCE operations for your cpu/compiler
620 * OR provide pthread.h and link against the posix thread library
621 * of your system.
622 */
623 #include <pthread.h>
624 #define ECB_NEEDS_PTHREADS 1
625 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
626
627 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
628 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
629 #endif
630#endif
631
632#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
633 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
634#endif
635
636#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
637 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
638#endif
639
640/*****************************************************************************/
641
642#define ECB_C99 (__STDC_VERSION__ >= 199901L)
643
644#if __cplusplus
645 #define ecb_inline static inline
646#elif ECB_GCC_VERSION(2,5)
647 #define ecb_inline static __inline__
648#elif ECB_C99
649 #define ecb_inline static inline
650#else
651 #define ecb_inline static
652#endif
653
654#if ECB_GCC_VERSION(3,3)
655 #define ecb_restrict __restrict__
656#elif ECB_C99
657 #define ecb_restrict restrict
658#else
659 #define ecb_restrict
660#endif
661
662typedef int ecb_bool;
663
664#define ECB_CONCAT_(a, b) a ## b
665#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
666#define ECB_STRINGIFY_(a) # a
667#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
668
669#define ecb_function_ ecb_inline
670
671#if ECB_GCC_VERSION(3,1)
672 #define ecb_attribute(attrlist) __attribute__(attrlist)
673 #define ecb_is_constant(expr) __builtin_constant_p (expr)
674 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
675 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
676#else
677 #define ecb_attribute(attrlist)
678 #define ecb_is_constant(expr) 0
679 #define ecb_expect(expr,value) (expr)
680 #define ecb_prefetch(addr,rw,locality)
681#endif
682
683/* no emulation for ecb_decltype */
684#if ECB_GCC_VERSION(4,5)
685 #define ecb_decltype(x) __decltype(x)
686#elif ECB_GCC_VERSION(3,0)
687 #define ecb_decltype(x) __typeof(x)
688#endif
689
690#define ecb_noinline ecb_attribute ((__noinline__))
691#define ecb_noreturn ecb_attribute ((__noreturn__))
692#define ecb_unused ecb_attribute ((__unused__))
693#define ecb_const ecb_attribute ((__const__))
694#define ecb_pure ecb_attribute ((__pure__))
695
696#if ECB_GCC_VERSION(4,3)
697 #define ecb_artificial ecb_attribute ((__artificial__))
698 #define ecb_hot ecb_attribute ((__hot__))
699 #define ecb_cold ecb_attribute ((__cold__))
700#else
701 #define ecb_artificial
702 #define ecb_hot
703 #define ecb_cold
704#endif
705
706/* put around conditional expressions if you are very sure that the */
707/* expression is mostly true or mostly false. note that these return */
708/* booleans, not the expression. */
349#define expect_false(expr) expect ((expr) != 0, 0) 709#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
350#define expect_true(expr) expect ((expr) != 0, 1) 710#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
711/* for compatibility to the rest of the world */
712#define ecb_likely(expr) ecb_expect_true (expr)
713#define ecb_unlikely(expr) ecb_expect_false (expr)
714
715/* count trailing zero bits and count # of one bits */
716#if ECB_GCC_VERSION(3,4)
717 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
718 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
719 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
720 #define ecb_ctz32(x) __builtin_ctz (x)
721 #define ecb_ctz64(x) __builtin_ctzll (x)
722 #define ecb_popcount32(x) __builtin_popcount (x)
723 /* no popcountll */
724#else
725 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
726 ecb_function_ int
727 ecb_ctz32 (uint32_t x)
728 {
729 int r = 0;
730
731 x &= ~x + 1; /* this isolates the lowest bit */
732
733#if ECB_branchless_on_i386
734 r += !!(x & 0xaaaaaaaa) << 0;
735 r += !!(x & 0xcccccccc) << 1;
736 r += !!(x & 0xf0f0f0f0) << 2;
737 r += !!(x & 0xff00ff00) << 3;
738 r += !!(x & 0xffff0000) << 4;
739#else
740 if (x & 0xaaaaaaaa) r += 1;
741 if (x & 0xcccccccc) r += 2;
742 if (x & 0xf0f0f0f0) r += 4;
743 if (x & 0xff00ff00) r += 8;
744 if (x & 0xffff0000) r += 16;
745#endif
746
747 return r;
748 }
749
750 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
751 ecb_function_ int
752 ecb_ctz64 (uint64_t x)
753 {
754 int shift = x & 0xffffffffU ? 0 : 32;
755 return ecb_ctz32 (x >> shift) + shift;
756 }
757
758 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
759 ecb_function_ int
760 ecb_popcount32 (uint32_t x)
761 {
762 x -= (x >> 1) & 0x55555555;
763 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
764 x = ((x >> 4) + x) & 0x0f0f0f0f;
765 x *= 0x01010101;
766
767 return x >> 24;
768 }
769
770 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
771 ecb_function_ int ecb_ld32 (uint32_t x)
772 {
773 int r = 0;
774
775 if (x >> 16) { x >>= 16; r += 16; }
776 if (x >> 8) { x >>= 8; r += 8; }
777 if (x >> 4) { x >>= 4; r += 4; }
778 if (x >> 2) { x >>= 2; r += 2; }
779 if (x >> 1) { r += 1; }
780
781 return r;
782 }
783
784 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
785 ecb_function_ int ecb_ld64 (uint64_t x)
786 {
787 int r = 0;
788
789 if (x >> 32) { x >>= 32; r += 32; }
790
791 return r + ecb_ld32 (x);
792 }
793#endif
794
795ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
796ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
797{
798 return ( (x * 0x0802U & 0x22110U)
799 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
800}
801
802ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
803ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
804{
805 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
806 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
807 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
808 x = ( x >> 8 ) | ( x << 8);
809
810 return x;
811}
812
813ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
814ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
815{
816 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
817 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
818 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
819 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
820 x = ( x >> 16 ) | ( x << 16);
821
822 return x;
823}
824
825/* popcount64 is only available on 64 bit cpus as gcc builtin */
826/* so for this version we are lazy */
827ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
828ecb_function_ int
829ecb_popcount64 (uint64_t x)
830{
831 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
832}
833
834ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
835ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
836ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
837ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
838ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
839ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
840ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
841ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
842
843ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
844ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
845ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
846ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
847ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
848ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
849ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
850ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
851
852#if ECB_GCC_VERSION(4,3)
853 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
854 #define ecb_bswap32(x) __builtin_bswap32 (x)
855 #define ecb_bswap64(x) __builtin_bswap64 (x)
856#else
857 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
858 ecb_function_ uint16_t
859 ecb_bswap16 (uint16_t x)
860 {
861 return ecb_rotl16 (x, 8);
862 }
863
864 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
865 ecb_function_ uint32_t
866 ecb_bswap32 (uint32_t x)
867 {
868 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
869 }
870
871 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
872 ecb_function_ uint64_t
873 ecb_bswap64 (uint64_t x)
874 {
875 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
876 }
877#endif
878
879#if ECB_GCC_VERSION(4,5)
880 #define ecb_unreachable() __builtin_unreachable ()
881#else
882 /* this seems to work fine, but gcc always emits a warning for it :/ */
883 ecb_inline void ecb_unreachable (void) ecb_noreturn;
884 ecb_inline void ecb_unreachable (void) { }
885#endif
886
887/* try to tell the compiler that some condition is definitely true */
888#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
889
890ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
891ecb_inline unsigned char
892ecb_byteorder_helper (void)
893{
894 const uint32_t u = 0x11223344;
895 return *(unsigned char *)&u;
896}
897
898ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
899ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
900ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
901ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
902
903#if ECB_GCC_VERSION(3,0) || ECB_C99
904 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
905#else
906 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
907#endif
908
909#if __cplusplus
910 template<typename T>
911 static inline T ecb_div_rd (T val, T div)
912 {
913 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
914 }
915 template<typename T>
916 static inline T ecb_div_ru (T val, T div)
917 {
918 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
919 }
920#else
921 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
922 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
923#endif
924
925#if ecb_cplusplus_does_not_suck
926 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
927 template<typename T, int N>
928 static inline int ecb_array_length (const T (&arr)[N])
929 {
930 return N;
931 }
932#else
933 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
934#endif
935
936#endif
937
938/* ECB.H END */
939
940#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
941/* if your architecture doesn't need memory fences, e.g. because it is
942 * single-cpu/core, or if you use libev in a project that doesn't use libev
943 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
944 * libev, in which cases the memory fences become nops.
945 * alternatively, you can remove this #error and link against libpthread,
946 * which will then provide the memory fences.
947 */
948# error "memory fences not defined for your architecture, please report"
949#endif
950
951#ifndef ECB_MEMORY_FENCE
952# define ECB_MEMORY_FENCE do { } while (0)
953# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
954# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
955#endif
956
957#define expect_false(cond) ecb_expect_false (cond)
958#define expect_true(cond) ecb_expect_true (cond)
959#define noinline ecb_noinline
960
351#define inline_size static inline 961#define inline_size ecb_inline
352 962
353#if EV_MINIMAL 963#if EV_FEATURE_CODE
964# define inline_speed ecb_inline
965#else
354# define inline_speed static noinline 966# define inline_speed static noinline
967#endif
968
969#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
970
971#if EV_MINPRI == EV_MAXPRI
972# define ABSPRI(w) (((W)w), 0)
355#else 973#else
356# define inline_speed static inline
357#endif
358
359#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
360#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 974# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
975#endif
361 976
362#define EMPTY /* required for microsofts broken pseudo-c compiler */ 977#define EMPTY /* required for microsofts broken pseudo-c compiler */
363#define EMPTY2(a,b) /* used to suppress some warnings */ 978#define EMPTY2(a,b) /* used to suppress some warnings */
364 979
365typedef ev_watcher *W; 980typedef ev_watcher *W;
… …
367typedef ev_watcher_time *WT; 982typedef ev_watcher_time *WT;
368 983
369#define ev_active(w) ((W)(w))->active 984#define ev_active(w) ((W)(w))->active
370#define ev_at(w) ((WT)(w))->at 985#define ev_at(w) ((WT)(w))->at
371 986
987#if EV_USE_REALTIME
988/* sig_atomic_t is used to avoid per-thread variables or locking but still */
989/* giving it a reasonably high chance of working on typical architectures */
990static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
991#endif
992
372#if EV_USE_MONOTONIC 993#if EV_USE_MONOTONIC
373/* sig_atomic_t is used to avoid per-thread variables or locking but still */
374/* giving it a reasonably high chance of working on typical architetcures */
375static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 994static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
995#endif
996
997#ifndef EV_FD_TO_WIN32_HANDLE
998# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
999#endif
1000#ifndef EV_WIN32_HANDLE_TO_FD
1001# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
1002#endif
1003#ifndef EV_WIN32_CLOSE_FD
1004# define EV_WIN32_CLOSE_FD(fd) close (fd)
376#endif 1005#endif
377 1006
378#ifdef _WIN32 1007#ifdef _WIN32
379# include "ev_win32.c" 1008# include "ev_win32.c"
380#endif 1009#endif
381 1010
382/*****************************************************************************/ 1011/*****************************************************************************/
383 1012
1013/* define a suitable floor function (only used by periodics atm) */
1014
1015#if EV_USE_FLOOR
1016# include <math.h>
1017# define ev_floor(v) floor (v)
1018#else
1019
1020#include <float.h>
1021
1022/* a floor() replacement function, should be independent of ev_tstamp type */
1023static ev_tstamp noinline
1024ev_floor (ev_tstamp v)
1025{
1026 /* the choice of shift factor is not terribly important */
1027#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1028 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1029#else
1030 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1031#endif
1032
1033 /* argument too large for an unsigned long? */
1034 if (expect_false (v >= shift))
1035 {
1036 ev_tstamp f;
1037
1038 if (v == v - 1.)
1039 return v; /* very large number */
1040
1041 f = shift * ev_floor (v * (1. / shift));
1042 return f + ev_floor (v - f);
1043 }
1044
1045 /* special treatment for negative args? */
1046 if (expect_false (v < 0.))
1047 {
1048 ev_tstamp f = -ev_floor (-v);
1049
1050 return f - (f == v ? 0 : 1);
1051 }
1052
1053 /* fits into an unsigned long */
1054 return (unsigned long)v;
1055}
1056
1057#endif
1058
1059/*****************************************************************************/
1060
1061#ifdef __linux
1062# include <sys/utsname.h>
1063#endif
1064
1065static unsigned int noinline ecb_cold
1066ev_linux_version (void)
1067{
1068#ifdef __linux
1069 unsigned int v = 0;
1070 struct utsname buf;
1071 int i;
1072 char *p = buf.release;
1073
1074 if (uname (&buf))
1075 return 0;
1076
1077 for (i = 3+1; --i; )
1078 {
1079 unsigned int c = 0;
1080
1081 for (;;)
1082 {
1083 if (*p >= '0' && *p <= '9')
1084 c = c * 10 + *p++ - '0';
1085 else
1086 {
1087 p += *p == '.';
1088 break;
1089 }
1090 }
1091
1092 v = (v << 8) | c;
1093 }
1094
1095 return v;
1096#else
1097 return 0;
1098#endif
1099}
1100
1101/*****************************************************************************/
1102
1103#if EV_AVOID_STDIO
1104static void noinline ecb_cold
1105ev_printerr (const char *msg)
1106{
1107 write (STDERR_FILENO, msg, strlen (msg));
1108}
1109#endif
1110
384static void (*syserr_cb)(const char *msg); 1111static void (*syserr_cb)(const char *msg) EV_THROW;
385 1112
386void 1113void ecb_cold
387ev_set_syserr_cb (void (*cb)(const char *msg)) 1114ev_set_syserr_cb (void (*cb)(const char *msg)) EV_THROW
388{ 1115{
389 syserr_cb = cb; 1116 syserr_cb = cb;
390} 1117}
391 1118
392static void noinline 1119static void noinline ecb_cold
393syserr (const char *msg) 1120ev_syserr (const char *msg)
394{ 1121{
395 if (!msg) 1122 if (!msg)
396 msg = "(libev) system error"; 1123 msg = "(libev) system error";
397 1124
398 if (syserr_cb) 1125 if (syserr_cb)
399 syserr_cb (msg); 1126 syserr_cb (msg);
400 else 1127 else
401 { 1128 {
1129#if EV_AVOID_STDIO
1130 ev_printerr (msg);
1131 ev_printerr (": ");
1132 ev_printerr (strerror (errno));
1133 ev_printerr ("\n");
1134#else
402 perror (msg); 1135 perror (msg);
1136#endif
403 abort (); 1137 abort ();
404 } 1138 }
405} 1139}
406 1140
407static void * 1141static void *
408ev_realloc_emul (void *ptr, long size) 1142ev_realloc_emul (void *ptr, long size)
409{ 1143{
1144#if __GLIBC__
1145 return realloc (ptr, size);
1146#else
410 /* some systems, notably openbsd and darwin, fail to properly 1147 /* some systems, notably openbsd and darwin, fail to properly
411 * implement realloc (x, 0) (as required by both ansi c-98 and 1148 * implement realloc (x, 0) (as required by both ansi c-89 and
412 * the single unix specification, so work around them here. 1149 * the single unix specification, so work around them here.
413 */ 1150 */
414 1151
415 if (size) 1152 if (size)
416 return realloc (ptr, size); 1153 return realloc (ptr, size);
417 1154
418 free (ptr); 1155 free (ptr);
419 return 0; 1156 return 0;
1157#endif
420} 1158}
421 1159
422static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1160static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
423 1161
424void 1162void ecb_cold
425ev_set_allocator (void *(*cb)(void *ptr, long size)) 1163ev_set_allocator (void *(*cb)(void *ptr, long size)) EV_THROW
426{ 1164{
427 alloc = cb; 1165 alloc = cb;
428} 1166}
429 1167
430inline_speed void * 1168inline_speed void *
… …
432{ 1170{
433 ptr = alloc (ptr, size); 1171 ptr = alloc (ptr, size);
434 1172
435 if (!ptr && size) 1173 if (!ptr && size)
436 { 1174 {
1175#if EV_AVOID_STDIO
1176 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1177#else
437 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1178 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1179#endif
438 abort (); 1180 abort ();
439 } 1181 }
440 1182
441 return ptr; 1183 return ptr;
442} 1184}
… …
444#define ev_malloc(size) ev_realloc (0, (size)) 1186#define ev_malloc(size) ev_realloc (0, (size))
445#define ev_free(ptr) ev_realloc ((ptr), 0) 1187#define ev_free(ptr) ev_realloc ((ptr), 0)
446 1188
447/*****************************************************************************/ 1189/*****************************************************************************/
448 1190
1191/* set in reify when reification needed */
1192#define EV_ANFD_REIFY 1
1193
1194/* file descriptor info structure */
449typedef struct 1195typedef struct
450{ 1196{
451 WL head; 1197 WL head;
452 unsigned char events; 1198 unsigned char events; /* the events watched for */
1199 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
1200 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
453 unsigned char reify; 1201 unsigned char unused;
1202#if EV_USE_EPOLL
1203 unsigned int egen; /* generation counter to counter epoll bugs */
1204#endif
454#if EV_SELECT_IS_WINSOCKET 1205#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
455 SOCKET handle; 1206 SOCKET handle;
456#endif 1207#endif
1208#if EV_USE_IOCP
1209 OVERLAPPED or, ow;
1210#endif
457} ANFD; 1211} ANFD;
458 1212
1213/* stores the pending event set for a given watcher */
459typedef struct 1214typedef struct
460{ 1215{
461 W w; 1216 W w;
462 int events; 1217 int events; /* the pending event set for the given watcher */
463} ANPENDING; 1218} ANPENDING;
464 1219
465#if EV_USE_INOTIFY 1220#if EV_USE_INOTIFY
466/* hash table entry per inotify-id */ 1221/* hash table entry per inotify-id */
467typedef struct 1222typedef struct
… …
470} ANFS; 1225} ANFS;
471#endif 1226#endif
472 1227
473/* Heap Entry */ 1228/* Heap Entry */
474#if EV_HEAP_CACHE_AT 1229#if EV_HEAP_CACHE_AT
1230 /* a heap element */
475 typedef struct { 1231 typedef struct {
476 ev_tstamp at; 1232 ev_tstamp at;
477 WT w; 1233 WT w;
478 } ANHE; 1234 } ANHE;
479 1235
480 #define ANHE_w(he) (he).w /* access watcher, read-write */ 1236 #define ANHE_w(he) (he).w /* access watcher, read-write */
481 #define ANHE_at(he) (he).at /* access cached at, read-only */ 1237 #define ANHE_at(he) (he).at /* access cached at, read-only */
482 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ 1238 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
483#else 1239#else
1240 /* a heap element */
484 typedef WT ANHE; 1241 typedef WT ANHE;
485 1242
486 #define ANHE_w(he) (he) 1243 #define ANHE_w(he) (he)
487 #define ANHE_at(he) (he)->at 1244 #define ANHE_at(he) (he)->at
488 #define ANHE_at_cache(he) 1245 #define ANHE_at_cache(he)
… …
499 #undef VAR 1256 #undef VAR
500 }; 1257 };
501 #include "ev_wrap.h" 1258 #include "ev_wrap.h"
502 1259
503 static struct ev_loop default_loop_struct; 1260 static struct ev_loop default_loop_struct;
504 struct ev_loop *ev_default_loop_ptr; 1261 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
505 1262
506#else 1263#else
507 1264
508 ev_tstamp ev_rt_now; 1265 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
509 #define VAR(name,decl) static decl; 1266 #define VAR(name,decl) static decl;
510 #include "ev_vars.h" 1267 #include "ev_vars.h"
511 #undef VAR 1268 #undef VAR
512 1269
513 static int ev_default_loop_ptr; 1270 static int ev_default_loop_ptr;
514 1271
515#endif 1272#endif
516 1273
1274#if EV_FEATURE_API
1275# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
1276# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
1277# define EV_INVOKE_PENDING invoke_cb (EV_A)
1278#else
1279# define EV_RELEASE_CB (void)0
1280# define EV_ACQUIRE_CB (void)0
1281# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
1282#endif
1283
1284#define EVBREAK_RECURSE 0x80
1285
517/*****************************************************************************/ 1286/*****************************************************************************/
518 1287
1288#ifndef EV_HAVE_EV_TIME
519ev_tstamp 1289ev_tstamp
520ev_time (void) 1290ev_time (void) EV_THROW
521{ 1291{
522#if EV_USE_REALTIME 1292#if EV_USE_REALTIME
1293 if (expect_true (have_realtime))
1294 {
523 struct timespec ts; 1295 struct timespec ts;
524 clock_gettime (CLOCK_REALTIME, &ts); 1296 clock_gettime (CLOCK_REALTIME, &ts);
525 return ts.tv_sec + ts.tv_nsec * 1e-9; 1297 return ts.tv_sec + ts.tv_nsec * 1e-9;
526#else 1298 }
1299#endif
1300
527 struct timeval tv; 1301 struct timeval tv;
528 gettimeofday (&tv, 0); 1302 gettimeofday (&tv, 0);
529 return tv.tv_sec + tv.tv_usec * 1e-6; 1303 return tv.tv_sec + tv.tv_usec * 1e-6;
530#endif
531} 1304}
1305#endif
532 1306
533ev_tstamp inline_size 1307inline_size ev_tstamp
534get_clock (void) 1308get_clock (void)
535{ 1309{
536#if EV_USE_MONOTONIC 1310#if EV_USE_MONOTONIC
537 if (expect_true (have_monotonic)) 1311 if (expect_true (have_monotonic))
538 { 1312 {
… …
545 return ev_time (); 1319 return ev_time ();
546} 1320}
547 1321
548#if EV_MULTIPLICITY 1322#if EV_MULTIPLICITY
549ev_tstamp 1323ev_tstamp
550ev_now (EV_P) 1324ev_now (EV_P) EV_THROW
551{ 1325{
552 return ev_rt_now; 1326 return ev_rt_now;
553} 1327}
554#endif 1328#endif
555 1329
556void 1330void
557ev_sleep (ev_tstamp delay) 1331ev_sleep (ev_tstamp delay) EV_THROW
558{ 1332{
559 if (delay > 0.) 1333 if (delay > 0.)
560 { 1334 {
561#if EV_USE_NANOSLEEP 1335#if EV_USE_NANOSLEEP
562 struct timespec ts; 1336 struct timespec ts;
563 1337
564 ts.tv_sec = (time_t)delay; 1338 EV_TS_SET (ts, delay);
565 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
566
567 nanosleep (&ts, 0); 1339 nanosleep (&ts, 0);
568#elif defined(_WIN32) 1340#elif defined _WIN32
569 Sleep ((unsigned long)(delay * 1e3)); 1341 Sleep ((unsigned long)(delay * 1e3));
570#else 1342#else
571 struct timeval tv; 1343 struct timeval tv;
572 1344
573 tv.tv_sec = (time_t)delay;
574 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
575
576 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1345 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
577 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 1346 /* something not guaranteed by newer posix versions, but guaranteed */
578 /* by older ones */ 1347 /* by older ones */
1348 EV_TV_SET (tv, delay);
579 select (0, 0, 0, 0, &tv); 1349 select (0, 0, 0, 0, &tv);
580#endif 1350#endif
581 } 1351 }
582} 1352}
583 1353
584/*****************************************************************************/ 1354/*****************************************************************************/
585 1355
586#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1356#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
587 1357
588int inline_size 1358/* find a suitable new size for the given array, */
1359/* hopefully by rounding to a nice-to-malloc size */
1360inline_size int
589array_nextsize (int elem, int cur, int cnt) 1361array_nextsize (int elem, int cur, int cnt)
590{ 1362{
591 int ncur = cur + 1; 1363 int ncur = cur + 1;
592 1364
593 do 1365 do
594 ncur <<= 1; 1366 ncur <<= 1;
595 while (cnt > ncur); 1367 while (cnt > ncur);
596 1368
597 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1369 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
598 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1370 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
599 { 1371 {
600 ncur *= elem; 1372 ncur *= elem;
601 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1373 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
602 ncur = ncur - sizeof (void *) * 4; 1374 ncur = ncur - sizeof (void *) * 4;
… …
604 } 1376 }
605 1377
606 return ncur; 1378 return ncur;
607} 1379}
608 1380
609static noinline void * 1381static void * noinline ecb_cold
610array_realloc (int elem, void *base, int *cur, int cnt) 1382array_realloc (int elem, void *base, int *cur, int cnt)
611{ 1383{
612 *cur = array_nextsize (elem, *cur, cnt); 1384 *cur = array_nextsize (elem, *cur, cnt);
613 return ev_realloc (base, elem * *cur); 1385 return ev_realloc (base, elem * *cur);
614} 1386}
1387
1388#define array_init_zero(base,count) \
1389 memset ((void *)(base), 0, sizeof (*(base)) * (count))
615 1390
616#define array_needsize(type,base,cur,cnt,init) \ 1391#define array_needsize(type,base,cur,cnt,init) \
617 if (expect_false ((cnt) > (cur))) \ 1392 if (expect_false ((cnt) > (cur))) \
618 { \ 1393 { \
619 int ocur_ = (cur); \ 1394 int ecb_unused ocur_ = (cur); \
620 (base) = (type *)array_realloc \ 1395 (base) = (type *)array_realloc \
621 (sizeof (type), (base), &(cur), (cnt)); \ 1396 (sizeof (type), (base), &(cur), (cnt)); \
622 init ((base) + (ocur_), (cur) - ocur_); \ 1397 init ((base) + (ocur_), (cur) - ocur_); \
623 } 1398 }
624 1399
… …
631 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 1406 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
632 } 1407 }
633#endif 1408#endif
634 1409
635#define array_free(stem, idx) \ 1410#define array_free(stem, idx) \
636 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 1411 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
637 1412
638/*****************************************************************************/ 1413/*****************************************************************************/
639 1414
1415/* dummy callback for pending events */
1416static void noinline
1417pendingcb (EV_P_ ev_prepare *w, int revents)
1418{
1419}
1420
640void noinline 1421void noinline
641ev_feed_event (EV_P_ void *w, int revents) 1422ev_feed_event (EV_P_ void *w, int revents) EV_THROW
642{ 1423{
643 W w_ = (W)w; 1424 W w_ = (W)w;
644 int pri = ABSPRI (w_); 1425 int pri = ABSPRI (w_);
645 1426
646 if (expect_false (w_->pending)) 1427 if (expect_false (w_->pending))
… …
650 w_->pending = ++pendingcnt [pri]; 1431 w_->pending = ++pendingcnt [pri];
651 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1432 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
652 pendings [pri][w_->pending - 1].w = w_; 1433 pendings [pri][w_->pending - 1].w = w_;
653 pendings [pri][w_->pending - 1].events = revents; 1434 pendings [pri][w_->pending - 1].events = revents;
654 } 1435 }
655}
656 1436
657void inline_speed 1437 pendingpri = NUMPRI - 1;
1438}
1439
1440inline_speed void
1441feed_reverse (EV_P_ W w)
1442{
1443 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
1444 rfeeds [rfeedcnt++] = w;
1445}
1446
1447inline_size void
1448feed_reverse_done (EV_P_ int revents)
1449{
1450 do
1451 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
1452 while (rfeedcnt);
1453}
1454
1455inline_speed void
658queue_events (EV_P_ W *events, int eventcnt, int type) 1456queue_events (EV_P_ W *events, int eventcnt, int type)
659{ 1457{
660 int i; 1458 int i;
661 1459
662 for (i = 0; i < eventcnt; ++i) 1460 for (i = 0; i < eventcnt; ++i)
663 ev_feed_event (EV_A_ events [i], type); 1461 ev_feed_event (EV_A_ events [i], type);
664} 1462}
665 1463
666/*****************************************************************************/ 1464/*****************************************************************************/
667 1465
668void inline_size 1466inline_speed void
669anfds_init (ANFD *base, int count)
670{
671 while (count--)
672 {
673 base->head = 0;
674 base->events = EV_NONE;
675 base->reify = 0;
676
677 ++base;
678 }
679}
680
681void inline_speed
682fd_event (EV_P_ int fd, int revents) 1467fd_event_nocheck (EV_P_ int fd, int revents)
683{ 1468{
684 ANFD *anfd = anfds + fd; 1469 ANFD *anfd = anfds + fd;
685 ev_io *w; 1470 ev_io *w;
686 1471
687 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1472 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
691 if (ev) 1476 if (ev)
692 ev_feed_event (EV_A_ (W)w, ev); 1477 ev_feed_event (EV_A_ (W)w, ev);
693 } 1478 }
694} 1479}
695 1480
1481/* do not submit kernel events for fds that have reify set */
1482/* because that means they changed while we were polling for new events */
1483inline_speed void
1484fd_event (EV_P_ int fd, int revents)
1485{
1486 ANFD *anfd = anfds + fd;
1487
1488 if (expect_true (!anfd->reify))
1489 fd_event_nocheck (EV_A_ fd, revents);
1490}
1491
696void 1492void
697ev_feed_fd_event (EV_P_ int fd, int revents) 1493ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
698{ 1494{
699 if (fd >= 0 && fd < anfdmax) 1495 if (fd >= 0 && fd < anfdmax)
700 fd_event (EV_A_ fd, revents); 1496 fd_event_nocheck (EV_A_ fd, revents);
701} 1497}
702 1498
703void inline_size 1499/* make sure the external fd watch events are in-sync */
1500/* with the kernel/libev internal state */
1501inline_size void
704fd_reify (EV_P) 1502fd_reify (EV_P)
705{ 1503{
706 int i; 1504 int i;
1505
1506#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1507 for (i = 0; i < fdchangecnt; ++i)
1508 {
1509 int fd = fdchanges [i];
1510 ANFD *anfd = anfds + fd;
1511
1512 if (anfd->reify & EV__IOFDSET && anfd->head)
1513 {
1514 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1515
1516 if (handle != anfd->handle)
1517 {
1518 unsigned long arg;
1519
1520 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1521
1522 /* handle changed, but fd didn't - we need to do it in two steps */
1523 backend_modify (EV_A_ fd, anfd->events, 0);
1524 anfd->events = 0;
1525 anfd->handle = handle;
1526 }
1527 }
1528 }
1529#endif
707 1530
708 for (i = 0; i < fdchangecnt; ++i) 1531 for (i = 0; i < fdchangecnt; ++i)
709 { 1532 {
710 int fd = fdchanges [i]; 1533 int fd = fdchanges [i];
711 ANFD *anfd = anfds + fd; 1534 ANFD *anfd = anfds + fd;
712 ev_io *w; 1535 ev_io *w;
713 1536
714 unsigned char events = 0; 1537 unsigned char o_events = anfd->events;
1538 unsigned char o_reify = anfd->reify;
715 1539
716 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1540 anfd->reify = 0;
717 events |= (unsigned char)w->events;
718 1541
719#if EV_SELECT_IS_WINSOCKET 1542 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
720 if (events)
721 { 1543 {
722 unsigned long arg; 1544 anfd->events = 0;
723 #ifdef EV_FD_TO_WIN32_HANDLE 1545
724 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1546 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
725 #else 1547 anfd->events |= (unsigned char)w->events;
726 anfd->handle = _get_osfhandle (fd); 1548
727 #endif 1549 if (o_events != anfd->events)
728 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1550 o_reify = EV__IOFDSET; /* actually |= */
729 } 1551 }
730#endif
731 1552
732 { 1553 if (o_reify & EV__IOFDSET)
733 unsigned char o_events = anfd->events;
734 unsigned char o_reify = anfd->reify;
735
736 anfd->reify = 0;
737 anfd->events = events;
738
739 if (o_events != events || o_reify & EV_IOFDSET)
740 backend_modify (EV_A_ fd, o_events, events); 1554 backend_modify (EV_A_ fd, o_events, anfd->events);
741 }
742 } 1555 }
743 1556
744 fdchangecnt = 0; 1557 fdchangecnt = 0;
745} 1558}
746 1559
747void inline_size 1560/* something about the given fd changed */
1561inline_size void
748fd_change (EV_P_ int fd, int flags) 1562fd_change (EV_P_ int fd, int flags)
749{ 1563{
750 unsigned char reify = anfds [fd].reify; 1564 unsigned char reify = anfds [fd].reify;
751 anfds [fd].reify |= flags; 1565 anfds [fd].reify |= flags;
752 1566
… …
756 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1570 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
757 fdchanges [fdchangecnt - 1] = fd; 1571 fdchanges [fdchangecnt - 1] = fd;
758 } 1572 }
759} 1573}
760 1574
761void inline_speed 1575/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1576inline_speed void ecb_cold
762fd_kill (EV_P_ int fd) 1577fd_kill (EV_P_ int fd)
763{ 1578{
764 ev_io *w; 1579 ev_io *w;
765 1580
766 while ((w = (ev_io *)anfds [fd].head)) 1581 while ((w = (ev_io *)anfds [fd].head))
… …
768 ev_io_stop (EV_A_ w); 1583 ev_io_stop (EV_A_ w);
769 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1584 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
770 } 1585 }
771} 1586}
772 1587
773int inline_size 1588/* check whether the given fd is actually valid, for error recovery */
1589inline_size int ecb_cold
774fd_valid (int fd) 1590fd_valid (int fd)
775{ 1591{
776#ifdef _WIN32 1592#ifdef _WIN32
777 return _get_osfhandle (fd) != -1; 1593 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
778#else 1594#else
779 return fcntl (fd, F_GETFD) != -1; 1595 return fcntl (fd, F_GETFD) != -1;
780#endif 1596#endif
781} 1597}
782 1598
783/* called on EBADF to verify fds */ 1599/* called on EBADF to verify fds */
784static void noinline 1600static void noinline ecb_cold
785fd_ebadf (EV_P) 1601fd_ebadf (EV_P)
786{ 1602{
787 int fd; 1603 int fd;
788 1604
789 for (fd = 0; fd < anfdmax; ++fd) 1605 for (fd = 0; fd < anfdmax; ++fd)
… …
791 if (!fd_valid (fd) && errno == EBADF) 1607 if (!fd_valid (fd) && errno == EBADF)
792 fd_kill (EV_A_ fd); 1608 fd_kill (EV_A_ fd);
793} 1609}
794 1610
795/* called on ENOMEM in select/poll to kill some fds and retry */ 1611/* called on ENOMEM in select/poll to kill some fds and retry */
796static void noinline 1612static void noinline ecb_cold
797fd_enomem (EV_P) 1613fd_enomem (EV_P)
798{ 1614{
799 int fd; 1615 int fd;
800 1616
801 for (fd = anfdmax; fd--; ) 1617 for (fd = anfdmax; fd--; )
802 if (anfds [fd].events) 1618 if (anfds [fd].events)
803 { 1619 {
804 fd_kill (EV_A_ fd); 1620 fd_kill (EV_A_ fd);
805 return; 1621 break;
806 } 1622 }
807} 1623}
808 1624
809/* usually called after fork if backend needs to re-arm all fds from scratch */ 1625/* usually called after fork if backend needs to re-arm all fds from scratch */
810static void noinline 1626static void noinline
… …
814 1630
815 for (fd = 0; fd < anfdmax; ++fd) 1631 for (fd = 0; fd < anfdmax; ++fd)
816 if (anfds [fd].events) 1632 if (anfds [fd].events)
817 { 1633 {
818 anfds [fd].events = 0; 1634 anfds [fd].events = 0;
1635 anfds [fd].emask = 0;
819 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1636 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
820 } 1637 }
821} 1638}
822 1639
1640/* used to prepare libev internal fd's */
1641/* this is not fork-safe */
1642inline_speed void
1643fd_intern (int fd)
1644{
1645#ifdef _WIN32
1646 unsigned long arg = 1;
1647 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1648#else
1649 fcntl (fd, F_SETFD, FD_CLOEXEC);
1650 fcntl (fd, F_SETFL, O_NONBLOCK);
1651#endif
1652}
1653
823/*****************************************************************************/ 1654/*****************************************************************************/
824 1655
825/* 1656/*
826 * the heap functions want a real array index. array index 0 uis guaranteed to not 1657 * the heap functions want a real array index. array index 0 is guaranteed to not
827 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1658 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
828 * the branching factor of the d-tree. 1659 * the branching factor of the d-tree.
829 */ 1660 */
830 1661
831/* 1662/*
… …
840#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1671#define HEAP0 (DHEAP - 1) /* index of first element in heap */
841#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 1672#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
842#define UPHEAP_DONE(p,k) ((p) == (k)) 1673#define UPHEAP_DONE(p,k) ((p) == (k))
843 1674
844/* away from the root */ 1675/* away from the root */
845void inline_speed 1676inline_speed void
846downheap (ANHE *heap, int N, int k) 1677downheap (ANHE *heap, int N, int k)
847{ 1678{
848 ANHE he = heap [k]; 1679 ANHE he = heap [k];
849 ANHE *E = heap + N + HEAP0; 1680 ANHE *E = heap + N + HEAP0;
850 1681
… …
890#define HEAP0 1 1721#define HEAP0 1
891#define HPARENT(k) ((k) >> 1) 1722#define HPARENT(k) ((k) >> 1)
892#define UPHEAP_DONE(p,k) (!(p)) 1723#define UPHEAP_DONE(p,k) (!(p))
893 1724
894/* away from the root */ 1725/* away from the root */
895void inline_speed 1726inline_speed void
896downheap (ANHE *heap, int N, int k) 1727downheap (ANHE *heap, int N, int k)
897{ 1728{
898 ANHE he = heap [k]; 1729 ANHE he = heap [k];
899 1730
900 for (;;) 1731 for (;;)
901 { 1732 {
902 int c = k << 1; 1733 int c = k << 1;
903 1734
904 if (c > N + HEAP0 - 1) 1735 if (c >= N + HEAP0)
905 break; 1736 break;
906 1737
907 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1738 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
908 ? 1 : 0; 1739 ? 1 : 0;
909 1740
… …
920 ev_active (ANHE_w (he)) = k; 1751 ev_active (ANHE_w (he)) = k;
921} 1752}
922#endif 1753#endif
923 1754
924/* towards the root */ 1755/* towards the root */
925void inline_speed 1756inline_speed void
926upheap (ANHE *heap, int k) 1757upheap (ANHE *heap, int k)
927{ 1758{
928 ANHE he = heap [k]; 1759 ANHE he = heap [k];
929 1760
930 for (;;) 1761 for (;;)
… …
941 1772
942 heap [k] = he; 1773 heap [k] = he;
943 ev_active (ANHE_w (he)) = k; 1774 ev_active (ANHE_w (he)) = k;
944} 1775}
945 1776
946void inline_size 1777/* move an element suitably so it is in a correct place */
1778inline_size void
947adjustheap (ANHE *heap, int N, int k) 1779adjustheap (ANHE *heap, int N, int k)
948{ 1780{
949 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1781 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
950 upheap (heap, k); 1782 upheap (heap, k);
951 else 1783 else
952 downheap (heap, N, k); 1784 downheap (heap, N, k);
953} 1785}
954 1786
955/* rebuild the heap: this function is used only once and executed rarely */ 1787/* rebuild the heap: this function is used only once and executed rarely */
956void inline_size 1788inline_size void
957reheap (ANHE *heap, int N) 1789reheap (ANHE *heap, int N)
958{ 1790{
959 int i; 1791 int i;
960 1792
961 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ 1793 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
… …
964 upheap (heap, i + HEAP0); 1796 upheap (heap, i + HEAP0);
965} 1797}
966 1798
967/*****************************************************************************/ 1799/*****************************************************************************/
968 1800
1801/* associate signal watchers to a signal signal */
969typedef struct 1802typedef struct
970{ 1803{
1804 EV_ATOMIC_T pending;
1805#if EV_MULTIPLICITY
1806 EV_P;
1807#endif
971 WL head; 1808 WL head;
972 EV_ATOMIC_T gotsig;
973} ANSIG; 1809} ANSIG;
974 1810
975static ANSIG *signals; 1811static ANSIG signals [EV_NSIG - 1];
976static int signalmax;
977
978static EV_ATOMIC_T gotsig;
979
980void inline_size
981signals_init (ANSIG *base, int count)
982{
983 while (count--)
984 {
985 base->head = 0;
986 base->gotsig = 0;
987
988 ++base;
989 }
990}
991 1812
992/*****************************************************************************/ 1813/*****************************************************************************/
993 1814
994void inline_speed 1815#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
995fd_intern (int fd)
996{
997#ifdef _WIN32
998 unsigned long arg = 1;
999 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1000#else
1001 fcntl (fd, F_SETFD, FD_CLOEXEC);
1002 fcntl (fd, F_SETFL, O_NONBLOCK);
1003#endif
1004}
1005 1816
1006static void noinline 1817static void noinline ecb_cold
1007evpipe_init (EV_P) 1818evpipe_init (EV_P)
1008{ 1819{
1009 if (!ev_is_active (&pipeev)) 1820 if (!ev_is_active (&pipe_w))
1010 { 1821 {
1011#if EV_USE_EVENTFD 1822# if EV_USE_EVENTFD
1823 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1824 if (evfd < 0 && errno == EINVAL)
1012 if ((evfd = eventfd (0, 0)) >= 0) 1825 evfd = eventfd (0, 0);
1826
1827 if (evfd >= 0)
1013 { 1828 {
1014 evpipe [0] = -1; 1829 evpipe [0] = -1;
1015 fd_intern (evfd); 1830 fd_intern (evfd); /* doing it twice doesn't hurt */
1016 ev_io_set (&pipeev, evfd, EV_READ); 1831 ev_io_set (&pipe_w, evfd, EV_READ);
1017 } 1832 }
1018 else 1833 else
1019#endif 1834# endif
1020 { 1835 {
1021 while (pipe (evpipe)) 1836 while (pipe (evpipe))
1022 syserr ("(libev) error creating signal/async pipe"); 1837 ev_syserr ("(libev) error creating signal/async pipe");
1023 1838
1024 fd_intern (evpipe [0]); 1839 fd_intern (evpipe [0]);
1025 fd_intern (evpipe [1]); 1840 fd_intern (evpipe [1]);
1026 ev_io_set (&pipeev, evpipe [0], EV_READ); 1841 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1027 } 1842 }
1028 1843
1029 ev_io_start (EV_A_ &pipeev); 1844 ev_io_start (EV_A_ &pipe_w);
1030 ev_unref (EV_A); /* watcher should not keep loop alive */ 1845 ev_unref (EV_A); /* watcher should not keep loop alive */
1031 } 1846 }
1032} 1847}
1033 1848
1034void inline_size 1849inline_speed void
1035evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1850evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1036{ 1851{
1037 if (!*flag) 1852 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1853
1854 if (expect_true (*flag))
1855 return;
1856
1857 *flag = 1;
1858
1859 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1860
1861 pipe_write_skipped = 1;
1862
1863 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1864
1865 if (pipe_write_wanted)
1038 { 1866 {
1867 int old_errno;
1868
1869 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1870
1039 int old_errno = errno; /* save errno because write might clobber it */ 1871 old_errno = errno; /* save errno because write will clobber it */
1040
1041 *flag = 1;
1042 1872
1043#if EV_USE_EVENTFD 1873#if EV_USE_EVENTFD
1044 if (evfd >= 0) 1874 if (evfd >= 0)
1045 { 1875 {
1046 uint64_t counter = 1; 1876 uint64_t counter = 1;
1047 write (evfd, &counter, sizeof (uint64_t)); 1877 write (evfd, &counter, sizeof (uint64_t));
1048 } 1878 }
1049 else 1879 else
1050#endif 1880#endif
1881 {
1882#ifdef _WIN32
1883 WSABUF buf;
1884 DWORD sent;
1885 buf.buf = &buf;
1886 buf.len = 1;
1887 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1888#else
1051 write (evpipe [1], &old_errno, 1); 1889 write (evpipe [1], &(evpipe [1]), 1);
1890#endif
1891 }
1052 1892
1053 errno = old_errno; 1893 errno = old_errno;
1054 } 1894 }
1055} 1895}
1056 1896
1897/* called whenever the libev signal pipe */
1898/* got some events (signal, async) */
1057static void 1899static void
1058pipecb (EV_P_ ev_io *iow, int revents) 1900pipecb (EV_P_ ev_io *iow, int revents)
1059{ 1901{
1902 int i;
1903
1904 if (revents & EV_READ)
1905 {
1060#if EV_USE_EVENTFD 1906#if EV_USE_EVENTFD
1061 if (evfd >= 0) 1907 if (evfd >= 0)
1062 { 1908 {
1063 uint64_t counter; 1909 uint64_t counter;
1064 read (evfd, &counter, sizeof (uint64_t)); 1910 read (evfd, &counter, sizeof (uint64_t));
1065 } 1911 }
1066 else 1912 else
1067#endif 1913#endif
1068 { 1914 {
1069 char dummy; 1915 char dummy[4];
1916#ifdef _WIN32
1917 WSABUF buf;
1918 DWORD recvd;
1919 buf.buf = dummy;
1920 buf.len = sizeof (dummy);
1921 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, 0, 0, 0);
1922#else
1070 read (evpipe [0], &dummy, 1); 1923 read (evpipe [0], &dummy, sizeof (dummy));
1924#endif
1925 }
1926 }
1927
1928 pipe_write_skipped = 0;
1929
1930 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1931
1932#if EV_SIGNAL_ENABLE
1933 if (sig_pending)
1071 } 1934 {
1935 sig_pending = 0;
1072 1936
1073 if (gotsig && ev_is_default_loop (EV_A)) 1937 ECB_MEMORY_FENCE_RELEASE;
1074 {
1075 int signum;
1076 gotsig = 0;
1077 1938
1078 for (signum = signalmax; signum--; ) 1939 for (i = EV_NSIG - 1; i--; )
1079 if (signals [signum].gotsig) 1940 if (expect_false (signals [i].pending))
1080 ev_feed_signal_event (EV_A_ signum + 1); 1941 ev_feed_signal_event (EV_A_ i + 1);
1081 } 1942 }
1943#endif
1082 1944
1083#if EV_ASYNC_ENABLE 1945#if EV_ASYNC_ENABLE
1084 if (gotasync) 1946 if (async_pending)
1085 { 1947 {
1086 int i; 1948 async_pending = 0;
1087 gotasync = 0; 1949
1950 ECB_MEMORY_FENCE_RELEASE;
1088 1951
1089 for (i = asynccnt; i--; ) 1952 for (i = asynccnt; i--; )
1090 if (asyncs [i]->sent) 1953 if (asyncs [i]->sent)
1091 { 1954 {
1092 asyncs [i]->sent = 0; 1955 asyncs [i]->sent = 0;
… …
1096#endif 1959#endif
1097} 1960}
1098 1961
1099/*****************************************************************************/ 1962/*****************************************************************************/
1100 1963
1964void
1965ev_feed_signal (int signum) EV_THROW
1966{
1967#if EV_MULTIPLICITY
1968 EV_P = signals [signum - 1].loop;
1969
1970 if (!EV_A)
1971 return;
1972#endif
1973
1974 if (!ev_active (&pipe_w))
1975 return;
1976
1977 signals [signum - 1].pending = 1;
1978 evpipe_write (EV_A_ &sig_pending);
1979}
1980
1101static void 1981static void
1102ev_sighandler (int signum) 1982ev_sighandler (int signum)
1103{ 1983{
1984#ifdef _WIN32
1985 signal (signum, ev_sighandler);
1986#endif
1987
1988 ev_feed_signal (signum);
1989}
1990
1991void noinline
1992ev_feed_signal_event (EV_P_ int signum) EV_THROW
1993{
1994 WL w;
1995
1996 if (expect_false (signum <= 0 || signum > EV_NSIG))
1997 return;
1998
1999 --signum;
2000
1104#if EV_MULTIPLICITY 2001#if EV_MULTIPLICITY
1105 struct ev_loop *loop = &default_loop_struct; 2002 /* it is permissible to try to feed a signal to the wrong loop */
1106#endif 2003 /* or, likely more useful, feeding a signal nobody is waiting for */
1107 2004
1108#if _WIN32 2005 if (expect_false (signals [signum].loop != EV_A))
1109 signal (signum, ev_sighandler);
1110#endif
1111
1112 signals [signum - 1].gotsig = 1;
1113 evpipe_write (EV_A_ &gotsig);
1114}
1115
1116void noinline
1117ev_feed_signal_event (EV_P_ int signum)
1118{
1119 WL w;
1120
1121#if EV_MULTIPLICITY
1122 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1123#endif
1124
1125 --signum;
1126
1127 if (signum < 0 || signum >= signalmax)
1128 return; 2006 return;
2007#endif
1129 2008
1130 signals [signum].gotsig = 0; 2009 signals [signum].pending = 0;
1131 2010
1132 for (w = signals [signum].head; w; w = w->next) 2011 for (w = signals [signum].head; w; w = w->next)
1133 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2012 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1134} 2013}
1135 2014
2015#if EV_USE_SIGNALFD
2016static void
2017sigfdcb (EV_P_ ev_io *iow, int revents)
2018{
2019 struct signalfd_siginfo si[2], *sip; /* these structs are big */
2020
2021 for (;;)
2022 {
2023 ssize_t res = read (sigfd, si, sizeof (si));
2024
2025 /* not ISO-C, as res might be -1, but works with SuS */
2026 for (sip = si; (char *)sip < (char *)si + res; ++sip)
2027 ev_feed_signal_event (EV_A_ sip->ssi_signo);
2028
2029 if (res < (ssize_t)sizeof (si))
2030 break;
2031 }
2032}
2033#endif
2034
2035#endif
2036
1136/*****************************************************************************/ 2037/*****************************************************************************/
1137 2038
2039#if EV_CHILD_ENABLE
1138static WL childs [EV_PID_HASHSIZE]; 2040static WL childs [EV_PID_HASHSIZE];
1139
1140#ifndef _WIN32
1141 2041
1142static ev_signal childev; 2042static ev_signal childev;
1143 2043
1144#ifndef WIFCONTINUED 2044#ifndef WIFCONTINUED
1145# define WIFCONTINUED(status) 0 2045# define WIFCONTINUED(status) 0
1146#endif 2046#endif
1147 2047
1148void inline_speed 2048/* handle a single child status event */
2049inline_speed void
1149child_reap (EV_P_ int chain, int pid, int status) 2050child_reap (EV_P_ int chain, int pid, int status)
1150{ 2051{
1151 ev_child *w; 2052 ev_child *w;
1152 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2053 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1153 2054
1154 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2055 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1155 { 2056 {
1156 if ((w->pid == pid || !w->pid) 2057 if ((w->pid == pid || !w->pid)
1157 && (!traced || (w->flags & 1))) 2058 && (!traced || (w->flags & 1)))
1158 { 2059 {
1159 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2060 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1166 2067
1167#ifndef WCONTINUED 2068#ifndef WCONTINUED
1168# define WCONTINUED 0 2069# define WCONTINUED 0
1169#endif 2070#endif
1170 2071
2072/* called on sigchld etc., calls waitpid */
1171static void 2073static void
1172childcb (EV_P_ ev_signal *sw, int revents) 2074childcb (EV_P_ ev_signal *sw, int revents)
1173{ 2075{
1174 int pid, status; 2076 int pid, status;
1175 2077
… …
1183 /* make sure we are called again until all children have been reaped */ 2085 /* make sure we are called again until all children have been reaped */
1184 /* we need to do it this way so that the callback gets called before we continue */ 2086 /* we need to do it this way so that the callback gets called before we continue */
1185 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2087 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1186 2088
1187 child_reap (EV_A_ pid, pid, status); 2089 child_reap (EV_A_ pid, pid, status);
1188 if (EV_PID_HASHSIZE > 1) 2090 if ((EV_PID_HASHSIZE) > 1)
1189 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2091 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1190} 2092}
1191 2093
1192#endif 2094#endif
1193 2095
1194/*****************************************************************************/ 2096/*****************************************************************************/
1195 2097
2098#if EV_USE_IOCP
2099# include "ev_iocp.c"
2100#endif
1196#if EV_USE_PORT 2101#if EV_USE_PORT
1197# include "ev_port.c" 2102# include "ev_port.c"
1198#endif 2103#endif
1199#if EV_USE_KQUEUE 2104#if EV_USE_KQUEUE
1200# include "ev_kqueue.c" 2105# include "ev_kqueue.c"
… …
1207#endif 2112#endif
1208#if EV_USE_SELECT 2113#if EV_USE_SELECT
1209# include "ev_select.c" 2114# include "ev_select.c"
1210#endif 2115#endif
1211 2116
1212int 2117int ecb_cold
1213ev_version_major (void) 2118ev_version_major (void) EV_THROW
1214{ 2119{
1215 return EV_VERSION_MAJOR; 2120 return EV_VERSION_MAJOR;
1216} 2121}
1217 2122
1218int 2123int ecb_cold
1219ev_version_minor (void) 2124ev_version_minor (void) EV_THROW
1220{ 2125{
1221 return EV_VERSION_MINOR; 2126 return EV_VERSION_MINOR;
1222} 2127}
1223 2128
1224/* return true if we are running with elevated privileges and should ignore env variables */ 2129/* return true if we are running with elevated privileges and should ignore env variables */
1225int inline_size 2130int inline_size ecb_cold
1226enable_secure (void) 2131enable_secure (void)
1227{ 2132{
1228#ifdef _WIN32 2133#ifdef _WIN32
1229 return 0; 2134 return 0;
1230#else 2135#else
1231 return getuid () != geteuid () 2136 return getuid () != geteuid ()
1232 || getgid () != getegid (); 2137 || getgid () != getegid ();
1233#endif 2138#endif
1234} 2139}
1235 2140
1236unsigned int 2141unsigned int ecb_cold
1237ev_supported_backends (void) 2142ev_supported_backends (void) EV_THROW
1238{ 2143{
1239 unsigned int flags = 0; 2144 unsigned int flags = 0;
1240 2145
1241 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2146 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1242 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2147 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1245 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2150 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1246 2151
1247 return flags; 2152 return flags;
1248} 2153}
1249 2154
1250unsigned int 2155unsigned int ecb_cold
1251ev_recommended_backends (void) 2156ev_recommended_backends (void) EV_THROW
1252{ 2157{
1253 unsigned int flags = ev_supported_backends (); 2158 unsigned int flags = ev_supported_backends ();
1254 2159
1255#ifndef __NetBSD__ 2160#ifndef __NetBSD__
1256 /* kqueue is borked on everything but netbsd apparently */ 2161 /* kqueue is borked on everything but netbsd apparently */
1257 /* it usually doesn't work correctly on anything but sockets and pipes */ 2162 /* it usually doesn't work correctly on anything but sockets and pipes */
1258 flags &= ~EVBACKEND_KQUEUE; 2163 flags &= ~EVBACKEND_KQUEUE;
1259#endif 2164#endif
1260#ifdef __APPLE__ 2165#ifdef __APPLE__
1261 // flags &= ~EVBACKEND_KQUEUE; for documentation 2166 /* only select works correctly on that "unix-certified" platform */
1262 flags &= ~EVBACKEND_POLL; 2167 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
2168 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
2169#endif
2170#ifdef __FreeBSD__
2171 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1263#endif 2172#endif
1264 2173
1265 return flags; 2174 return flags;
1266} 2175}
1267 2176
2177unsigned int ecb_cold
2178ev_embeddable_backends (void) EV_THROW
2179{
2180 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2181
2182 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2183 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2184 flags &= ~EVBACKEND_EPOLL;
2185
2186 return flags;
2187}
2188
1268unsigned int 2189unsigned int
1269ev_embeddable_backends (void) 2190ev_backend (EV_P) EV_THROW
1270{ 2191{
1271 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2192 return backend;
1272
1273 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1274 /* please fix it and tell me how to detect the fix */
1275 flags &= ~EVBACKEND_EPOLL;
1276
1277 return flags;
1278} 2193}
1279 2194
2195#if EV_FEATURE_API
1280unsigned int 2196unsigned int
1281ev_backend (EV_P) 2197ev_iteration (EV_P) EV_THROW
1282{ 2198{
1283 return backend; 2199 return loop_count;
1284} 2200}
1285 2201
1286unsigned int 2202unsigned int
1287ev_loop_count (EV_P) 2203ev_depth (EV_P) EV_THROW
1288{ 2204{
1289 return loop_count; 2205 return loop_depth;
1290} 2206}
1291 2207
1292void 2208void
1293ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2209ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1294{ 2210{
1295 io_blocktime = interval; 2211 io_blocktime = interval;
1296} 2212}
1297 2213
1298void 2214void
1299ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2215ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1300{ 2216{
1301 timeout_blocktime = interval; 2217 timeout_blocktime = interval;
1302} 2218}
1303 2219
2220void
2221ev_set_userdata (EV_P_ void *data) EV_THROW
2222{
2223 userdata = data;
2224}
2225
2226void *
2227ev_userdata (EV_P) EV_THROW
2228{
2229 return userdata;
2230}
2231
2232void
2233ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
2234{
2235 invoke_cb = invoke_pending_cb;
2236}
2237
2238void
2239ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
2240{
2241 release_cb = release;
2242 acquire_cb = acquire;
2243}
2244#endif
2245
2246/* initialise a loop structure, must be zero-initialised */
1304static void noinline 2247static void noinline ecb_cold
1305loop_init (EV_P_ unsigned int flags) 2248loop_init (EV_P_ unsigned int flags) EV_THROW
1306{ 2249{
1307 if (!backend) 2250 if (!backend)
1308 { 2251 {
2252 origflags = flags;
2253
2254#if EV_USE_REALTIME
2255 if (!have_realtime)
2256 {
2257 struct timespec ts;
2258
2259 if (!clock_gettime (CLOCK_REALTIME, &ts))
2260 have_realtime = 1;
2261 }
2262#endif
2263
1309#if EV_USE_MONOTONIC 2264#if EV_USE_MONOTONIC
2265 if (!have_monotonic)
1310 { 2266 {
1311 struct timespec ts; 2267 struct timespec ts;
2268
1312 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2269 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1313 have_monotonic = 1; 2270 have_monotonic = 1;
1314 } 2271 }
1315#endif
1316
1317 ev_rt_now = ev_time ();
1318 mn_now = get_clock ();
1319 now_floor = mn_now;
1320 rtmn_diff = ev_rt_now - mn_now;
1321
1322 io_blocktime = 0.;
1323 timeout_blocktime = 0.;
1324 backend = 0;
1325 backend_fd = -1;
1326 gotasync = 0;
1327#if EV_USE_INOTIFY
1328 fs_fd = -2;
1329#endif 2272#endif
1330 2273
1331 /* pid check not overridable via env */ 2274 /* pid check not overridable via env */
1332#ifndef _WIN32 2275#ifndef _WIN32
1333 if (flags & EVFLAG_FORKCHECK) 2276 if (flags & EVFLAG_FORKCHECK)
… …
1337 if (!(flags & EVFLAG_NOENV) 2280 if (!(flags & EVFLAG_NOENV)
1338 && !enable_secure () 2281 && !enable_secure ()
1339 && getenv ("LIBEV_FLAGS")) 2282 && getenv ("LIBEV_FLAGS"))
1340 flags = atoi (getenv ("LIBEV_FLAGS")); 2283 flags = atoi (getenv ("LIBEV_FLAGS"));
1341 2284
1342 if (!(flags & 0x0000ffffU)) 2285 ev_rt_now = ev_time ();
2286 mn_now = get_clock ();
2287 now_floor = mn_now;
2288 rtmn_diff = ev_rt_now - mn_now;
2289#if EV_FEATURE_API
2290 invoke_cb = ev_invoke_pending;
2291#endif
2292
2293 io_blocktime = 0.;
2294 timeout_blocktime = 0.;
2295 backend = 0;
2296 backend_fd = -1;
2297 sig_pending = 0;
2298#if EV_ASYNC_ENABLE
2299 async_pending = 0;
2300#endif
2301 pipe_write_skipped = 0;
2302 pipe_write_wanted = 0;
2303#if EV_USE_INOTIFY
2304 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2305#endif
2306#if EV_USE_SIGNALFD
2307 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2308#endif
2309
2310 if (!(flags & EVBACKEND_MASK))
1343 flags |= ev_recommended_backends (); 2311 flags |= ev_recommended_backends ();
1344 2312
2313#if EV_USE_IOCP
2314 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2315#endif
1345#if EV_USE_PORT 2316#if EV_USE_PORT
1346 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2317 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1347#endif 2318#endif
1348#if EV_USE_KQUEUE 2319#if EV_USE_KQUEUE
1349 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2320 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1356#endif 2327#endif
1357#if EV_USE_SELECT 2328#if EV_USE_SELECT
1358 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2329 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1359#endif 2330#endif
1360 2331
2332 ev_prepare_init (&pending_w, pendingcb);
2333
2334#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1361 ev_init (&pipeev, pipecb); 2335 ev_init (&pipe_w, pipecb);
1362 ev_set_priority (&pipeev, EV_MAXPRI); 2336 ev_set_priority (&pipe_w, EV_MAXPRI);
2337#endif
1363 } 2338 }
1364} 2339}
1365 2340
1366static void noinline 2341/* free up a loop structure */
2342void ecb_cold
1367loop_destroy (EV_P) 2343ev_loop_destroy (EV_P)
1368{ 2344{
1369 int i; 2345 int i;
1370 2346
2347#if EV_MULTIPLICITY
2348 /* mimic free (0) */
2349 if (!EV_A)
2350 return;
2351#endif
2352
2353#if EV_CLEANUP_ENABLE
2354 /* queue cleanup watchers (and execute them) */
2355 if (expect_false (cleanupcnt))
2356 {
2357 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2358 EV_INVOKE_PENDING;
2359 }
2360#endif
2361
2362#if EV_CHILD_ENABLE
2363 if (ev_is_active (&childev))
2364 {
2365 ev_ref (EV_A); /* child watcher */
2366 ev_signal_stop (EV_A_ &childev);
2367 }
2368#endif
2369
1371 if (ev_is_active (&pipeev)) 2370 if (ev_is_active (&pipe_w))
1372 { 2371 {
1373 ev_ref (EV_A); /* signal watcher */ 2372 /*ev_ref (EV_A);*/
1374 ev_io_stop (EV_A_ &pipeev); 2373 /*ev_io_stop (EV_A_ &pipe_w);*/
1375 2374
1376#if EV_USE_EVENTFD 2375#if EV_USE_EVENTFD
1377 if (evfd >= 0) 2376 if (evfd >= 0)
1378 close (evfd); 2377 close (evfd);
1379#endif 2378#endif
1380 2379
1381 if (evpipe [0] >= 0) 2380 if (evpipe [0] >= 0)
1382 { 2381 {
1383 close (evpipe [0]); 2382 EV_WIN32_CLOSE_FD (evpipe [0]);
1384 close (evpipe [1]); 2383 EV_WIN32_CLOSE_FD (evpipe [1]);
1385 } 2384 }
1386 } 2385 }
2386
2387#if EV_USE_SIGNALFD
2388 if (ev_is_active (&sigfd_w))
2389 close (sigfd);
2390#endif
1387 2391
1388#if EV_USE_INOTIFY 2392#if EV_USE_INOTIFY
1389 if (fs_fd >= 0) 2393 if (fs_fd >= 0)
1390 close (fs_fd); 2394 close (fs_fd);
1391#endif 2395#endif
1392 2396
1393 if (backend_fd >= 0) 2397 if (backend_fd >= 0)
1394 close (backend_fd); 2398 close (backend_fd);
1395 2399
2400#if EV_USE_IOCP
2401 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2402#endif
1396#if EV_USE_PORT 2403#if EV_USE_PORT
1397 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2404 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1398#endif 2405#endif
1399#if EV_USE_KQUEUE 2406#if EV_USE_KQUEUE
1400 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2407 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1415#if EV_IDLE_ENABLE 2422#if EV_IDLE_ENABLE
1416 array_free (idle, [i]); 2423 array_free (idle, [i]);
1417#endif 2424#endif
1418 } 2425 }
1419 2426
1420 ev_free (anfds); anfdmax = 0; 2427 ev_free (anfds); anfds = 0; anfdmax = 0;
1421 2428
1422 /* have to use the microsoft-never-gets-it-right macro */ 2429 /* have to use the microsoft-never-gets-it-right macro */
2430 array_free (rfeed, EMPTY);
1423 array_free (fdchange, EMPTY); 2431 array_free (fdchange, EMPTY);
1424 array_free (timer, EMPTY); 2432 array_free (timer, EMPTY);
1425#if EV_PERIODIC_ENABLE 2433#if EV_PERIODIC_ENABLE
1426 array_free (periodic, EMPTY); 2434 array_free (periodic, EMPTY);
1427#endif 2435#endif
1428#if EV_FORK_ENABLE 2436#if EV_FORK_ENABLE
1429 array_free (fork, EMPTY); 2437 array_free (fork, EMPTY);
1430#endif 2438#endif
2439#if EV_CLEANUP_ENABLE
2440 array_free (cleanup, EMPTY);
2441#endif
1431 array_free (prepare, EMPTY); 2442 array_free (prepare, EMPTY);
1432 array_free (check, EMPTY); 2443 array_free (check, EMPTY);
1433#if EV_ASYNC_ENABLE 2444#if EV_ASYNC_ENABLE
1434 array_free (async, EMPTY); 2445 array_free (async, EMPTY);
1435#endif 2446#endif
1436 2447
1437 backend = 0; 2448 backend = 0;
2449
2450#if EV_MULTIPLICITY
2451 if (ev_is_default_loop (EV_A))
2452#endif
2453 ev_default_loop_ptr = 0;
2454#if EV_MULTIPLICITY
2455 else
2456 ev_free (EV_A);
2457#endif
1438} 2458}
1439 2459
1440#if EV_USE_INOTIFY 2460#if EV_USE_INOTIFY
1441void inline_size infy_fork (EV_P); 2461inline_size void infy_fork (EV_P);
1442#endif 2462#endif
1443 2463
1444void inline_size 2464inline_size void
1445loop_fork (EV_P) 2465loop_fork (EV_P)
1446{ 2466{
1447#if EV_USE_PORT 2467#if EV_USE_PORT
1448 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 2468 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1449#endif 2469#endif
… …
1455#endif 2475#endif
1456#if EV_USE_INOTIFY 2476#if EV_USE_INOTIFY
1457 infy_fork (EV_A); 2477 infy_fork (EV_A);
1458#endif 2478#endif
1459 2479
1460 if (ev_is_active (&pipeev)) 2480 if (ev_is_active (&pipe_w))
1461 { 2481 {
1462 /* this "locks" the handlers against writing to the pipe */ 2482 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1463 /* while we modify the fd vars */
1464 gotsig = 1;
1465#if EV_ASYNC_ENABLE
1466 gotasync = 1;
1467#endif
1468 2483
1469 ev_ref (EV_A); 2484 ev_ref (EV_A);
1470 ev_io_stop (EV_A_ &pipeev); 2485 ev_io_stop (EV_A_ &pipe_w);
1471 2486
1472#if EV_USE_EVENTFD 2487#if EV_USE_EVENTFD
1473 if (evfd >= 0) 2488 if (evfd >= 0)
1474 close (evfd); 2489 close (evfd);
1475#endif 2490#endif
1476 2491
1477 if (evpipe [0] >= 0) 2492 if (evpipe [0] >= 0)
1478 { 2493 {
1479 close (evpipe [0]); 2494 EV_WIN32_CLOSE_FD (evpipe [0]);
1480 close (evpipe [1]); 2495 EV_WIN32_CLOSE_FD (evpipe [1]);
1481 } 2496 }
1482 2497
2498#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1483 evpipe_init (EV_A); 2499 evpipe_init (EV_A);
1484 /* now iterate over everything, in case we missed something */ 2500 /* now iterate over everything, in case we missed something */
1485 pipecb (EV_A_ &pipeev, EV_READ); 2501 pipecb (EV_A_ &pipe_w, EV_READ);
2502#endif
1486 } 2503 }
1487 2504
1488 postfork = 0; 2505 postfork = 0;
1489} 2506}
1490 2507
1491#if EV_MULTIPLICITY 2508#if EV_MULTIPLICITY
1492 2509
1493struct ev_loop * 2510struct ev_loop * ecb_cold
1494ev_loop_new (unsigned int flags) 2511ev_loop_new (unsigned int flags) EV_THROW
1495{ 2512{
1496 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2513 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1497 2514
1498 memset (loop, 0, sizeof (struct ev_loop)); 2515 memset (EV_A, 0, sizeof (struct ev_loop));
1499
1500 loop_init (EV_A_ flags); 2516 loop_init (EV_A_ flags);
1501 2517
1502 if (ev_backend (EV_A)) 2518 if (ev_backend (EV_A))
1503 return loop; 2519 return EV_A;
1504 2520
2521 ev_free (EV_A);
1505 return 0; 2522 return 0;
1506} 2523}
1507 2524
1508void 2525#endif /* multiplicity */
1509ev_loop_destroy (EV_P)
1510{
1511 loop_destroy (EV_A);
1512 ev_free (loop);
1513}
1514
1515void
1516ev_loop_fork (EV_P)
1517{
1518 postfork = 1; /* must be in line with ev_default_fork */
1519}
1520 2526
1521#if EV_VERIFY 2527#if EV_VERIFY
1522static void noinline 2528static void noinline ecb_cold
1523verify_watcher (EV_P_ W w) 2529verify_watcher (EV_P_ W w)
1524{ 2530{
1525 assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2531 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1526 2532
1527 if (w->pending) 2533 if (w->pending)
1528 assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2534 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1529} 2535}
1530 2536
1531static void noinline 2537static void noinline ecb_cold
1532verify_heap (EV_P_ ANHE *heap, int N) 2538verify_heap (EV_P_ ANHE *heap, int N)
1533{ 2539{
1534 int i; 2540 int i;
1535 2541
1536 for (i = HEAP0; i < N + HEAP0; ++i) 2542 for (i = HEAP0; i < N + HEAP0; ++i)
1537 { 2543 {
1538 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); 2544 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1539 assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i]))); 2545 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1540 assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i])))); 2546 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1541 2547
1542 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2548 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1543 } 2549 }
1544} 2550}
1545 2551
1546static void noinline 2552static void noinline ecb_cold
1547array_verify (EV_P_ W *ws, int cnt) 2553array_verify (EV_P_ W *ws, int cnt)
1548{ 2554{
1549 while (cnt--) 2555 while (cnt--)
1550 { 2556 {
1551 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2557 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1552 verify_watcher (EV_A_ ws [cnt]); 2558 verify_watcher (EV_A_ ws [cnt]);
1553 } 2559 }
1554} 2560}
1555#endif 2561#endif
1556 2562
1557void 2563#if EV_FEATURE_API
1558ev_loop_verify (EV_P) 2564void ecb_cold
2565ev_verify (EV_P) EV_THROW
1559{ 2566{
1560#if EV_VERIFY 2567#if EV_VERIFY
1561 int i; 2568 int i;
1562 WL w; 2569 WL w, w2;
1563 2570
1564 assert (activecnt >= -1); 2571 assert (activecnt >= -1);
1565 2572
1566 assert (fdchangemax >= fdchangecnt); 2573 assert (fdchangemax >= fdchangecnt);
1567 for (i = 0; i < fdchangecnt; ++i) 2574 for (i = 0; i < fdchangecnt; ++i)
1568 assert (("negative fd in fdchanges", fdchanges [i] >= 0)); 2575 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1569 2576
1570 assert (anfdmax >= 0); 2577 assert (anfdmax >= 0);
1571 for (i = 0; i < anfdmax; ++i) 2578 for (i = 0; i < anfdmax; ++i)
2579 {
2580 int j = 0;
2581
1572 for (w = anfds [i].head; w; w = w->next) 2582 for (w = w2 = anfds [i].head; w; w = w->next)
1573 { 2583 {
1574 verify_watcher (EV_A_ (W)w); 2584 verify_watcher (EV_A_ (W)w);
2585
2586 if (j++ & 1)
2587 {
2588 assert (("libev: io watcher list contains a loop", w != w2));
2589 w2 = w2->next;
2590 }
2591
1575 assert (("inactive fd watcher on anfd list", ev_active (w) == 1)); 2592 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1576 assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2593 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1577 } 2594 }
2595 }
1578 2596
1579 assert (timermax >= timercnt); 2597 assert (timermax >= timercnt);
1580 verify_heap (EV_A_ timers, timercnt); 2598 verify_heap (EV_A_ timers, timercnt);
1581 2599
1582#if EV_PERIODIC_ENABLE 2600#if EV_PERIODIC_ENABLE
… …
1597#if EV_FORK_ENABLE 2615#if EV_FORK_ENABLE
1598 assert (forkmax >= forkcnt); 2616 assert (forkmax >= forkcnt);
1599 array_verify (EV_A_ (W *)forks, forkcnt); 2617 array_verify (EV_A_ (W *)forks, forkcnt);
1600#endif 2618#endif
1601 2619
2620#if EV_CLEANUP_ENABLE
2621 assert (cleanupmax >= cleanupcnt);
2622 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2623#endif
2624
1602#if EV_ASYNC_ENABLE 2625#if EV_ASYNC_ENABLE
1603 assert (asyncmax >= asynccnt); 2626 assert (asyncmax >= asynccnt);
1604 array_verify (EV_A_ (W *)asyncs, asynccnt); 2627 array_verify (EV_A_ (W *)asyncs, asynccnt);
1605#endif 2628#endif
1606 2629
2630#if EV_PREPARE_ENABLE
1607 assert (preparemax >= preparecnt); 2631 assert (preparemax >= preparecnt);
1608 array_verify (EV_A_ (W *)prepares, preparecnt); 2632 array_verify (EV_A_ (W *)prepares, preparecnt);
2633#endif
1609 2634
2635#if EV_CHECK_ENABLE
1610 assert (checkmax >= checkcnt); 2636 assert (checkmax >= checkcnt);
1611 array_verify (EV_A_ (W *)checks, checkcnt); 2637 array_verify (EV_A_ (W *)checks, checkcnt);
2638#endif
1612 2639
1613# if 0 2640# if 0
2641#if EV_CHILD_ENABLE
1614 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2642 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1615 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2643 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2644#endif
1616# endif 2645# endif
1617#endif 2646#endif
1618} 2647}
1619 2648#endif
1620#endif /* multiplicity */
1621 2649
1622#if EV_MULTIPLICITY 2650#if EV_MULTIPLICITY
1623struct ev_loop * 2651struct ev_loop * ecb_cold
1624ev_default_loop_init (unsigned int flags)
1625#else 2652#else
1626int 2653int
2654#endif
1627ev_default_loop (unsigned int flags) 2655ev_default_loop (unsigned int flags) EV_THROW
1628#endif
1629{ 2656{
1630 if (!ev_default_loop_ptr) 2657 if (!ev_default_loop_ptr)
1631 { 2658 {
1632#if EV_MULTIPLICITY 2659#if EV_MULTIPLICITY
1633 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2660 EV_P = ev_default_loop_ptr = &default_loop_struct;
1634#else 2661#else
1635 ev_default_loop_ptr = 1; 2662 ev_default_loop_ptr = 1;
1636#endif 2663#endif
1637 2664
1638 loop_init (EV_A_ flags); 2665 loop_init (EV_A_ flags);
1639 2666
1640 if (ev_backend (EV_A)) 2667 if (ev_backend (EV_A))
1641 { 2668 {
1642#ifndef _WIN32 2669#if EV_CHILD_ENABLE
1643 ev_signal_init (&childev, childcb, SIGCHLD); 2670 ev_signal_init (&childev, childcb, SIGCHLD);
1644 ev_set_priority (&childev, EV_MAXPRI); 2671 ev_set_priority (&childev, EV_MAXPRI);
1645 ev_signal_start (EV_A_ &childev); 2672 ev_signal_start (EV_A_ &childev);
1646 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2673 ev_unref (EV_A); /* child watcher should not keep loop alive */
1647#endif 2674#endif
… …
1652 2679
1653 return ev_default_loop_ptr; 2680 return ev_default_loop_ptr;
1654} 2681}
1655 2682
1656void 2683void
1657ev_default_destroy (void) 2684ev_loop_fork (EV_P) EV_THROW
1658{ 2685{
1659#if EV_MULTIPLICITY
1660 struct ev_loop *loop = ev_default_loop_ptr;
1661#endif
1662
1663#ifndef _WIN32
1664 ev_ref (EV_A); /* child watcher */
1665 ev_signal_stop (EV_A_ &childev);
1666#endif
1667
1668 loop_destroy (EV_A);
1669}
1670
1671void
1672ev_default_fork (void)
1673{
1674#if EV_MULTIPLICITY
1675 struct ev_loop *loop = ev_default_loop_ptr;
1676#endif
1677
1678 if (backend)
1679 postfork = 1; /* must be in line with ev_loop_fork */ 2686 postfork = 1; /* must be in line with ev_default_fork */
1680} 2687}
1681 2688
1682/*****************************************************************************/ 2689/*****************************************************************************/
1683 2690
1684void 2691void
1685ev_invoke (EV_P_ void *w, int revents) 2692ev_invoke (EV_P_ void *w, int revents)
1686{ 2693{
1687 EV_CB_INVOKE ((W)w, revents); 2694 EV_CB_INVOKE ((W)w, revents);
1688} 2695}
1689 2696
1690void inline_speed 2697unsigned int
1691call_pending (EV_P) 2698ev_pending_count (EV_P) EV_THROW
1692{ 2699{
1693 int pri; 2700 int pri;
2701 unsigned int count = 0;
1694 2702
1695 for (pri = NUMPRI; pri--; ) 2703 for (pri = NUMPRI; pri--; )
2704 count += pendingcnt [pri];
2705
2706 return count;
2707}
2708
2709void noinline
2710ev_invoke_pending (EV_P)
2711{
2712 for (pendingpri = NUMPRI; pendingpri--; ) /* pendingpri is modified during the loop */
1696 while (pendingcnt [pri]) 2713 while (pendingcnt [pendingpri])
1697 { 2714 {
1698 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2715 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1699 2716
1700 if (expect_true (p->w))
1701 {
1702 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1703
1704 p->w->pending = 0; 2717 p->w->pending = 0;
1705 EV_CB_INVOKE (p->w, p->events); 2718 EV_CB_INVOKE (p->w, p->events);
1706 EV_FREQUENT_CHECK; 2719 EV_FREQUENT_CHECK;
1707 }
1708 } 2720 }
1709} 2721}
1710 2722
1711#if EV_IDLE_ENABLE 2723#if EV_IDLE_ENABLE
1712void inline_size 2724/* make idle watchers pending. this handles the "call-idle */
2725/* only when higher priorities are idle" logic */
2726inline_size void
1713idle_reify (EV_P) 2727idle_reify (EV_P)
1714{ 2728{
1715 if (expect_false (idleall)) 2729 if (expect_false (idleall))
1716 { 2730 {
1717 int pri; 2731 int pri;
… …
1729 } 2743 }
1730 } 2744 }
1731} 2745}
1732#endif 2746#endif
1733 2747
1734void inline_size 2748/* make timers pending */
2749inline_size void
1735timers_reify (EV_P) 2750timers_reify (EV_P)
1736{ 2751{
1737 EV_FREQUENT_CHECK; 2752 EV_FREQUENT_CHECK;
1738 2753
1739 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 2754 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1740 { 2755 {
1741 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2756 do
1742
1743 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1744
1745 /* first reschedule or stop timer */
1746 if (w->repeat)
1747 { 2757 {
2758 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2759
2760 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2761
2762 /* first reschedule or stop timer */
2763 if (w->repeat)
2764 {
1748 ev_at (w) += w->repeat; 2765 ev_at (w) += w->repeat;
1749 if (ev_at (w) < mn_now) 2766 if (ev_at (w) < mn_now)
1750 ev_at (w) = mn_now; 2767 ev_at (w) = mn_now;
1751 2768
1752 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2769 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1753 2770
1754 ANHE_at_cache (timers [HEAP0]); 2771 ANHE_at_cache (timers [HEAP0]);
1755 downheap (timers, timercnt, HEAP0); 2772 downheap (timers, timercnt, HEAP0);
2773 }
2774 else
2775 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2776
2777 EV_FREQUENT_CHECK;
2778 feed_reverse (EV_A_ (W)w);
1756 } 2779 }
1757 else 2780 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1758 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1759 2781
1760 EV_FREQUENT_CHECK; 2782 feed_reverse_done (EV_A_ EV_TIMER);
1761 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1762 } 2783 }
1763} 2784}
1764 2785
1765#if EV_PERIODIC_ENABLE 2786#if EV_PERIODIC_ENABLE
1766void inline_size 2787
2788static void noinline
2789periodic_recalc (EV_P_ ev_periodic *w)
2790{
2791 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2792 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2793
2794 /* the above almost always errs on the low side */
2795 while (at <= ev_rt_now)
2796 {
2797 ev_tstamp nat = at + w->interval;
2798
2799 /* when resolution fails us, we use ev_rt_now */
2800 if (expect_false (nat == at))
2801 {
2802 at = ev_rt_now;
2803 break;
2804 }
2805
2806 at = nat;
2807 }
2808
2809 ev_at (w) = at;
2810}
2811
2812/* make periodics pending */
2813inline_size void
1767periodics_reify (EV_P) 2814periodics_reify (EV_P)
1768{ 2815{
1769 EV_FREQUENT_CHECK; 2816 EV_FREQUENT_CHECK;
1770 2817
1771 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2818 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1772 { 2819 {
1773 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2820 int feed_count = 0;
1774 2821
1775 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2822 do
1776
1777 /* first reschedule or stop timer */
1778 if (w->reschedule_cb)
1779 { 2823 {
2824 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2825
2826 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2827
2828 /* first reschedule or stop timer */
2829 if (w->reschedule_cb)
2830 {
1780 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2831 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1781 2832
1782 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); 2833 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1783 2834
1784 ANHE_at_cache (periodics [HEAP0]); 2835 ANHE_at_cache (periodics [HEAP0]);
1785 downheap (periodics, periodiccnt, HEAP0); 2836 downheap (periodics, periodiccnt, HEAP0);
2837 }
2838 else if (w->interval)
2839 {
2840 periodic_recalc (EV_A_ w);
2841 ANHE_at_cache (periodics [HEAP0]);
2842 downheap (periodics, periodiccnt, HEAP0);
2843 }
2844 else
2845 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2846
2847 EV_FREQUENT_CHECK;
2848 feed_reverse (EV_A_ (W)w);
1786 } 2849 }
1787 else if (w->interval) 2850 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1788 {
1789 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1790 /* if next trigger time is not sufficiently in the future, put it there */
1791 /* this might happen because of floating point inexactness */
1792 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1793 {
1794 ev_at (w) += w->interval;
1795 2851
1796 /* if interval is unreasonably low we might still have a time in the past */
1797 /* so correct this. this will make the periodic very inexact, but the user */
1798 /* has effectively asked to get triggered more often than possible */
1799 if (ev_at (w) < ev_rt_now)
1800 ev_at (w) = ev_rt_now;
1801 }
1802
1803 ANHE_at_cache (periodics [HEAP0]);
1804 downheap (periodics, periodiccnt, HEAP0);
1805 }
1806 else
1807 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1808
1809 EV_FREQUENT_CHECK;
1810 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2852 feed_reverse_done (EV_A_ EV_PERIODIC);
1811 } 2853 }
1812} 2854}
1813 2855
2856/* simply recalculate all periodics */
2857/* TODO: maybe ensure that at least one event happens when jumping forward? */
1814static void noinline 2858static void noinline ecb_cold
1815periodics_reschedule (EV_P) 2859periodics_reschedule (EV_P)
1816{ 2860{
1817 int i; 2861 int i;
1818 2862
1819 /* adjust periodics after time jump */ 2863 /* adjust periodics after time jump */
… …
1822 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2866 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1823 2867
1824 if (w->reschedule_cb) 2868 if (w->reschedule_cb)
1825 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2869 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1826 else if (w->interval) 2870 else if (w->interval)
1827 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2871 periodic_recalc (EV_A_ w);
1828 2872
1829 ANHE_at_cache (periodics [i]); 2873 ANHE_at_cache (periodics [i]);
1830 } 2874 }
1831 2875
1832 reheap (periodics, periodiccnt); 2876 reheap (periodics, periodiccnt);
1833} 2877}
1834#endif 2878#endif
1835 2879
1836void inline_speed 2880/* adjust all timers by a given offset */
2881static void noinline ecb_cold
2882timers_reschedule (EV_P_ ev_tstamp adjust)
2883{
2884 int i;
2885
2886 for (i = 0; i < timercnt; ++i)
2887 {
2888 ANHE *he = timers + i + HEAP0;
2889 ANHE_w (*he)->at += adjust;
2890 ANHE_at_cache (*he);
2891 }
2892}
2893
2894/* fetch new monotonic and realtime times from the kernel */
2895/* also detect if there was a timejump, and act accordingly */
2896inline_speed void
1837time_update (EV_P_ ev_tstamp max_block) 2897time_update (EV_P_ ev_tstamp max_block)
1838{ 2898{
1839 int i;
1840
1841#if EV_USE_MONOTONIC 2899#if EV_USE_MONOTONIC
1842 if (expect_true (have_monotonic)) 2900 if (expect_true (have_monotonic))
1843 { 2901 {
2902 int i;
1844 ev_tstamp odiff = rtmn_diff; 2903 ev_tstamp odiff = rtmn_diff;
1845 2904
1846 mn_now = get_clock (); 2905 mn_now = get_clock ();
1847 2906
1848 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2907 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1864 * doesn't hurt either as we only do this on time-jumps or 2923 * doesn't hurt either as we only do this on time-jumps or
1865 * in the unlikely event of having been preempted here. 2924 * in the unlikely event of having been preempted here.
1866 */ 2925 */
1867 for (i = 4; --i; ) 2926 for (i = 4; --i; )
1868 { 2927 {
2928 ev_tstamp diff;
1869 rtmn_diff = ev_rt_now - mn_now; 2929 rtmn_diff = ev_rt_now - mn_now;
1870 2930
2931 diff = odiff - rtmn_diff;
2932
1871 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2933 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1872 return; /* all is well */ 2934 return; /* all is well */
1873 2935
1874 ev_rt_now = ev_time (); 2936 ev_rt_now = ev_time ();
1875 mn_now = get_clock (); 2937 mn_now = get_clock ();
1876 now_floor = mn_now; 2938 now_floor = mn_now;
1877 } 2939 }
1878 2940
2941 /* no timer adjustment, as the monotonic clock doesn't jump */
2942 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1879# if EV_PERIODIC_ENABLE 2943# if EV_PERIODIC_ENABLE
1880 periodics_reschedule (EV_A); 2944 periodics_reschedule (EV_A);
1881# endif 2945# endif
1882 /* no timer adjustment, as the monotonic clock doesn't jump */
1883 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1884 } 2946 }
1885 else 2947 else
1886#endif 2948#endif
1887 { 2949 {
1888 ev_rt_now = ev_time (); 2950 ev_rt_now = ev_time ();
1889 2951
1890 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2952 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1891 { 2953 {
2954 /* adjust timers. this is easy, as the offset is the same for all of them */
2955 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1892#if EV_PERIODIC_ENABLE 2956#if EV_PERIODIC_ENABLE
1893 periodics_reschedule (EV_A); 2957 periodics_reschedule (EV_A);
1894#endif 2958#endif
1895 /* adjust timers. this is easy, as the offset is the same for all of them */
1896 for (i = 0; i < timercnt; ++i)
1897 {
1898 ANHE *he = timers + i + HEAP0;
1899 ANHE_w (*he)->at += ev_rt_now - mn_now;
1900 ANHE_at_cache (*he);
1901 }
1902 } 2959 }
1903 2960
1904 mn_now = ev_rt_now; 2961 mn_now = ev_rt_now;
1905 } 2962 }
1906} 2963}
1907 2964
1908void 2965int
1909ev_ref (EV_P)
1910{
1911 ++activecnt;
1912}
1913
1914void
1915ev_unref (EV_P)
1916{
1917 --activecnt;
1918}
1919
1920void
1921ev_now_update (EV_P)
1922{
1923 time_update (EV_A_ 1e100);
1924}
1925
1926static int loop_done;
1927
1928void
1929ev_loop (EV_P_ int flags) 2966ev_run (EV_P_ int flags)
1930{ 2967{
2968#if EV_FEATURE_API
2969 ++loop_depth;
2970#endif
2971
2972 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2973
1931 loop_done = EVUNLOOP_CANCEL; 2974 loop_done = EVBREAK_CANCEL;
1932 2975
1933 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2976 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1934 2977
1935 do 2978 do
1936 { 2979 {
1937#if EV_VERIFY >= 2 2980#if EV_VERIFY >= 2
1938 ev_loop_verify (EV_A); 2981 ev_verify (EV_A);
1939#endif 2982#endif
1940 2983
1941#ifndef _WIN32 2984#ifndef _WIN32
1942 if (expect_false (curpid)) /* penalise the forking check even more */ 2985 if (expect_false (curpid)) /* penalise the forking check even more */
1943 if (expect_false (getpid () != curpid)) 2986 if (expect_false (getpid () != curpid))
… …
1951 /* we might have forked, so queue fork handlers */ 2994 /* we might have forked, so queue fork handlers */
1952 if (expect_false (postfork)) 2995 if (expect_false (postfork))
1953 if (forkcnt) 2996 if (forkcnt)
1954 { 2997 {
1955 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2998 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1956 call_pending (EV_A); 2999 EV_INVOKE_PENDING;
1957 } 3000 }
1958#endif 3001#endif
1959 3002
3003#if EV_PREPARE_ENABLE
1960 /* queue prepare watchers (and execute them) */ 3004 /* queue prepare watchers (and execute them) */
1961 if (expect_false (preparecnt)) 3005 if (expect_false (preparecnt))
1962 { 3006 {
1963 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3007 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1964 call_pending (EV_A); 3008 EV_INVOKE_PENDING;
1965 } 3009 }
3010#endif
1966 3011
1967 if (expect_false (!activecnt)) 3012 if (expect_false (loop_done))
1968 break; 3013 break;
1969 3014
1970 /* we might have forked, so reify kernel state if necessary */ 3015 /* we might have forked, so reify kernel state if necessary */
1971 if (expect_false (postfork)) 3016 if (expect_false (postfork))
1972 loop_fork (EV_A); 3017 loop_fork (EV_A);
… …
1977 /* calculate blocking time */ 3022 /* calculate blocking time */
1978 { 3023 {
1979 ev_tstamp waittime = 0.; 3024 ev_tstamp waittime = 0.;
1980 ev_tstamp sleeptime = 0.; 3025 ev_tstamp sleeptime = 0.;
1981 3026
3027 /* remember old timestamp for io_blocktime calculation */
3028 ev_tstamp prev_mn_now = mn_now;
3029
3030 /* update time to cancel out callback processing overhead */
3031 time_update (EV_A_ 1e100);
3032
3033 /* from now on, we want a pipe-wake-up */
3034 pipe_write_wanted = 1;
3035
3036 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3037
1982 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3038 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
1983 { 3039 {
1984 /* update time to cancel out callback processing overhead */
1985 time_update (EV_A_ 1e100);
1986
1987 waittime = MAX_BLOCKTIME; 3040 waittime = MAX_BLOCKTIME;
1988 3041
1989 if (timercnt) 3042 if (timercnt)
1990 { 3043 {
1991 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3044 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
1992 if (waittime > to) waittime = to; 3045 if (waittime > to) waittime = to;
1993 } 3046 }
1994 3047
1995#if EV_PERIODIC_ENABLE 3048#if EV_PERIODIC_ENABLE
1996 if (periodiccnt) 3049 if (periodiccnt)
1997 { 3050 {
1998 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3051 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
1999 if (waittime > to) waittime = to; 3052 if (waittime > to) waittime = to;
2000 } 3053 }
2001#endif 3054#endif
2002 3055
3056 /* don't let timeouts decrease the waittime below timeout_blocktime */
2003 if (expect_false (waittime < timeout_blocktime)) 3057 if (expect_false (waittime < timeout_blocktime))
2004 waittime = timeout_blocktime; 3058 waittime = timeout_blocktime;
2005 3059
2006 sleeptime = waittime - backend_fudge; 3060 /* at this point, we NEED to wait, so we have to ensure */
3061 /* to pass a minimum nonzero value to the backend */
3062 if (expect_false (waittime < backend_mintime))
3063 waittime = backend_mintime;
2007 3064
3065 /* extra check because io_blocktime is commonly 0 */
2008 if (expect_true (sleeptime > io_blocktime)) 3066 if (expect_false (io_blocktime))
2009 sleeptime = io_blocktime;
2010
2011 if (sleeptime)
2012 { 3067 {
3068 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3069
3070 if (sleeptime > waittime - backend_mintime)
3071 sleeptime = waittime - backend_mintime;
3072
3073 if (expect_true (sleeptime > 0.))
3074 {
2013 ev_sleep (sleeptime); 3075 ev_sleep (sleeptime);
2014 waittime -= sleeptime; 3076 waittime -= sleeptime;
3077 }
2015 } 3078 }
2016 } 3079 }
2017 3080
3081#if EV_FEATURE_API
2018 ++loop_count; 3082 ++loop_count;
3083#endif
3084 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2019 backend_poll (EV_A_ waittime); 3085 backend_poll (EV_A_ waittime);
3086 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3087
3088 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3089
3090 if (pipe_write_skipped)
3091 {
3092 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3093 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3094 }
3095
2020 3096
2021 /* update ev_rt_now, do magic */ 3097 /* update ev_rt_now, do magic */
2022 time_update (EV_A_ waittime + sleeptime); 3098 time_update (EV_A_ waittime + sleeptime);
2023 } 3099 }
2024 3100
… …
2031#if EV_IDLE_ENABLE 3107#if EV_IDLE_ENABLE
2032 /* queue idle watchers unless other events are pending */ 3108 /* queue idle watchers unless other events are pending */
2033 idle_reify (EV_A); 3109 idle_reify (EV_A);
2034#endif 3110#endif
2035 3111
3112#if EV_CHECK_ENABLE
2036 /* queue check watchers, to be executed first */ 3113 /* queue check watchers, to be executed first */
2037 if (expect_false (checkcnt)) 3114 if (expect_false (checkcnt))
2038 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3115 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3116#endif
2039 3117
2040 call_pending (EV_A); 3118 EV_INVOKE_PENDING;
2041 } 3119 }
2042 while (expect_true ( 3120 while (expect_true (
2043 activecnt 3121 activecnt
2044 && !loop_done 3122 && !loop_done
2045 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3123 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2046 )); 3124 ));
2047 3125
2048 if (loop_done == EVUNLOOP_ONE) 3126 if (loop_done == EVBREAK_ONE)
2049 loop_done = EVUNLOOP_CANCEL; 3127 loop_done = EVBREAK_CANCEL;
3128
3129#if EV_FEATURE_API
3130 --loop_depth;
3131#endif
3132
3133 return activecnt;
2050} 3134}
2051 3135
2052void 3136void
2053ev_unloop (EV_P_ int how) 3137ev_break (EV_P_ int how) EV_THROW
2054{ 3138{
2055 loop_done = how; 3139 loop_done = how;
2056} 3140}
2057 3141
3142void
3143ev_ref (EV_P) EV_THROW
3144{
3145 ++activecnt;
3146}
3147
3148void
3149ev_unref (EV_P) EV_THROW
3150{
3151 --activecnt;
3152}
3153
3154void
3155ev_now_update (EV_P) EV_THROW
3156{
3157 time_update (EV_A_ 1e100);
3158}
3159
3160void
3161ev_suspend (EV_P) EV_THROW
3162{
3163 ev_now_update (EV_A);
3164}
3165
3166void
3167ev_resume (EV_P) EV_THROW
3168{
3169 ev_tstamp mn_prev = mn_now;
3170
3171 ev_now_update (EV_A);
3172 timers_reschedule (EV_A_ mn_now - mn_prev);
3173#if EV_PERIODIC_ENABLE
3174 /* TODO: really do this? */
3175 periodics_reschedule (EV_A);
3176#endif
3177}
3178
2058/*****************************************************************************/ 3179/*****************************************************************************/
3180/* singly-linked list management, used when the expected list length is short */
2059 3181
2060void inline_size 3182inline_size void
2061wlist_add (WL *head, WL elem) 3183wlist_add (WL *head, WL elem)
2062{ 3184{
2063 elem->next = *head; 3185 elem->next = *head;
2064 *head = elem; 3186 *head = elem;
2065} 3187}
2066 3188
2067void inline_size 3189inline_size void
2068wlist_del (WL *head, WL elem) 3190wlist_del (WL *head, WL elem)
2069{ 3191{
2070 while (*head) 3192 while (*head)
2071 { 3193 {
2072 if (*head == elem) 3194 if (expect_true (*head == elem))
2073 { 3195 {
2074 *head = elem->next; 3196 *head = elem->next;
2075 return; 3197 break;
2076 } 3198 }
2077 3199
2078 head = &(*head)->next; 3200 head = &(*head)->next;
2079 } 3201 }
2080} 3202}
2081 3203
2082void inline_speed 3204/* internal, faster, version of ev_clear_pending */
3205inline_speed void
2083clear_pending (EV_P_ W w) 3206clear_pending (EV_P_ W w)
2084{ 3207{
2085 if (w->pending) 3208 if (w->pending)
2086 { 3209 {
2087 pendings [ABSPRI (w)][w->pending - 1].w = 0; 3210 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2088 w->pending = 0; 3211 w->pending = 0;
2089 } 3212 }
2090} 3213}
2091 3214
2092int 3215int
2093ev_clear_pending (EV_P_ void *w) 3216ev_clear_pending (EV_P_ void *w) EV_THROW
2094{ 3217{
2095 W w_ = (W)w; 3218 W w_ = (W)w;
2096 int pending = w_->pending; 3219 int pending = w_->pending;
2097 3220
2098 if (expect_true (pending)) 3221 if (expect_true (pending))
2099 { 3222 {
2100 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 3223 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3224 p->w = (W)&pending_w;
2101 w_->pending = 0; 3225 w_->pending = 0;
2102 p->w = 0;
2103 return p->events; 3226 return p->events;
2104 } 3227 }
2105 else 3228 else
2106 return 0; 3229 return 0;
2107} 3230}
2108 3231
2109void inline_size 3232inline_size void
2110pri_adjust (EV_P_ W w) 3233pri_adjust (EV_P_ W w)
2111{ 3234{
2112 int pri = w->priority; 3235 int pri = ev_priority (w);
2113 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 3236 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2114 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 3237 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2115 w->priority = pri; 3238 ev_set_priority (w, pri);
2116} 3239}
2117 3240
2118void inline_speed 3241inline_speed void
2119ev_start (EV_P_ W w, int active) 3242ev_start (EV_P_ W w, int active)
2120{ 3243{
2121 pri_adjust (EV_A_ w); 3244 pri_adjust (EV_A_ w);
2122 w->active = active; 3245 w->active = active;
2123 ev_ref (EV_A); 3246 ev_ref (EV_A);
2124} 3247}
2125 3248
2126void inline_size 3249inline_size void
2127ev_stop (EV_P_ W w) 3250ev_stop (EV_P_ W w)
2128{ 3251{
2129 ev_unref (EV_A); 3252 ev_unref (EV_A);
2130 w->active = 0; 3253 w->active = 0;
2131} 3254}
2132 3255
2133/*****************************************************************************/ 3256/*****************************************************************************/
2134 3257
2135void noinline 3258void noinline
2136ev_io_start (EV_P_ ev_io *w) 3259ev_io_start (EV_P_ ev_io *w) EV_THROW
2137{ 3260{
2138 int fd = w->fd; 3261 int fd = w->fd;
2139 3262
2140 if (expect_false (ev_is_active (w))) 3263 if (expect_false (ev_is_active (w)))
2141 return; 3264 return;
2142 3265
2143 assert (("ev_io_start called with negative fd", fd >= 0)); 3266 assert (("libev: ev_io_start called with negative fd", fd >= 0));
3267 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2144 3268
2145 EV_FREQUENT_CHECK; 3269 EV_FREQUENT_CHECK;
2146 3270
2147 ev_start (EV_A_ (W)w, 1); 3271 ev_start (EV_A_ (W)w, 1);
2148 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 3272 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2149 wlist_add (&anfds[fd].head, (WL)w); 3273 wlist_add (&anfds[fd].head, (WL)w);
2150 3274
3275 /* common bug, apparently */
3276 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3277
2151 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 3278 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2152 w->events &= ~EV_IOFDSET; 3279 w->events &= ~EV__IOFDSET;
2153 3280
2154 EV_FREQUENT_CHECK; 3281 EV_FREQUENT_CHECK;
2155} 3282}
2156 3283
2157void noinline 3284void noinline
2158ev_io_stop (EV_P_ ev_io *w) 3285ev_io_stop (EV_P_ ev_io *w) EV_THROW
2159{ 3286{
2160 clear_pending (EV_A_ (W)w); 3287 clear_pending (EV_A_ (W)w);
2161 if (expect_false (!ev_is_active (w))) 3288 if (expect_false (!ev_is_active (w)))
2162 return; 3289 return;
2163 3290
2164 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 3291 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2165 3292
2166 EV_FREQUENT_CHECK; 3293 EV_FREQUENT_CHECK;
2167 3294
2168 wlist_del (&anfds[w->fd].head, (WL)w); 3295 wlist_del (&anfds[w->fd].head, (WL)w);
2169 ev_stop (EV_A_ (W)w); 3296 ev_stop (EV_A_ (W)w);
2170 3297
2171 fd_change (EV_A_ w->fd, 1); 3298 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2172 3299
2173 EV_FREQUENT_CHECK; 3300 EV_FREQUENT_CHECK;
2174} 3301}
2175 3302
2176void noinline 3303void noinline
2177ev_timer_start (EV_P_ ev_timer *w) 3304ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2178{ 3305{
2179 if (expect_false (ev_is_active (w))) 3306 if (expect_false (ev_is_active (w)))
2180 return; 3307 return;
2181 3308
2182 ev_at (w) += mn_now; 3309 ev_at (w) += mn_now;
2183 3310
2184 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 3311 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2185 3312
2186 EV_FREQUENT_CHECK; 3313 EV_FREQUENT_CHECK;
2187 3314
2188 ++timercnt; 3315 ++timercnt;
2189 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 3316 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
… …
2192 ANHE_at_cache (timers [ev_active (w)]); 3319 ANHE_at_cache (timers [ev_active (w)]);
2193 upheap (timers, ev_active (w)); 3320 upheap (timers, ev_active (w));
2194 3321
2195 EV_FREQUENT_CHECK; 3322 EV_FREQUENT_CHECK;
2196 3323
2197 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3324 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2198} 3325}
2199 3326
2200void noinline 3327void noinline
2201ev_timer_stop (EV_P_ ev_timer *w) 3328ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2202{ 3329{
2203 clear_pending (EV_A_ (W)w); 3330 clear_pending (EV_A_ (W)w);
2204 if (expect_false (!ev_is_active (w))) 3331 if (expect_false (!ev_is_active (w)))
2205 return; 3332 return;
2206 3333
2207 EV_FREQUENT_CHECK; 3334 EV_FREQUENT_CHECK;
2208 3335
2209 { 3336 {
2210 int active = ev_active (w); 3337 int active = ev_active (w);
2211 3338
2212 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 3339 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2213 3340
2214 --timercnt; 3341 --timercnt;
2215 3342
2216 if (expect_true (active < timercnt + HEAP0)) 3343 if (expect_true (active < timercnt + HEAP0))
2217 { 3344 {
2218 timers [active] = timers [timercnt + HEAP0]; 3345 timers [active] = timers [timercnt + HEAP0];
2219 adjustheap (timers, timercnt, active); 3346 adjustheap (timers, timercnt, active);
2220 } 3347 }
2221 } 3348 }
2222 3349
2223 EV_FREQUENT_CHECK;
2224
2225 ev_at (w) -= mn_now; 3350 ev_at (w) -= mn_now;
2226 3351
2227 ev_stop (EV_A_ (W)w); 3352 ev_stop (EV_A_ (W)w);
3353
3354 EV_FREQUENT_CHECK;
2228} 3355}
2229 3356
2230void noinline 3357void noinline
2231ev_timer_again (EV_P_ ev_timer *w) 3358ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2232{ 3359{
2233 EV_FREQUENT_CHECK; 3360 EV_FREQUENT_CHECK;
3361
3362 clear_pending (EV_A_ (W)w);
2234 3363
2235 if (ev_is_active (w)) 3364 if (ev_is_active (w))
2236 { 3365 {
2237 if (w->repeat) 3366 if (w->repeat)
2238 { 3367 {
… …
2250 } 3379 }
2251 3380
2252 EV_FREQUENT_CHECK; 3381 EV_FREQUENT_CHECK;
2253} 3382}
2254 3383
3384ev_tstamp
3385ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
3386{
3387 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3388}
3389
2255#if EV_PERIODIC_ENABLE 3390#if EV_PERIODIC_ENABLE
2256void noinline 3391void noinline
2257ev_periodic_start (EV_P_ ev_periodic *w) 3392ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2258{ 3393{
2259 if (expect_false (ev_is_active (w))) 3394 if (expect_false (ev_is_active (w)))
2260 return; 3395 return;
2261 3396
2262 if (w->reschedule_cb) 3397 if (w->reschedule_cb)
2263 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3398 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2264 else if (w->interval) 3399 else if (w->interval)
2265 { 3400 {
2266 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 3401 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2267 /* this formula differs from the one in periodic_reify because we do not always round up */ 3402 periodic_recalc (EV_A_ w);
2268 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2269 } 3403 }
2270 else 3404 else
2271 ev_at (w) = w->offset; 3405 ev_at (w) = w->offset;
2272 3406
2273 EV_FREQUENT_CHECK; 3407 EV_FREQUENT_CHECK;
… …
2279 ANHE_at_cache (periodics [ev_active (w)]); 3413 ANHE_at_cache (periodics [ev_active (w)]);
2280 upheap (periodics, ev_active (w)); 3414 upheap (periodics, ev_active (w));
2281 3415
2282 EV_FREQUENT_CHECK; 3416 EV_FREQUENT_CHECK;
2283 3417
2284 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3418 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2285} 3419}
2286 3420
2287void noinline 3421void noinline
2288ev_periodic_stop (EV_P_ ev_periodic *w) 3422ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2289{ 3423{
2290 clear_pending (EV_A_ (W)w); 3424 clear_pending (EV_A_ (W)w);
2291 if (expect_false (!ev_is_active (w))) 3425 if (expect_false (!ev_is_active (w)))
2292 return; 3426 return;
2293 3427
2294 EV_FREQUENT_CHECK; 3428 EV_FREQUENT_CHECK;
2295 3429
2296 { 3430 {
2297 int active = ev_active (w); 3431 int active = ev_active (w);
2298 3432
2299 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 3433 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2300 3434
2301 --periodiccnt; 3435 --periodiccnt;
2302 3436
2303 if (expect_true (active < periodiccnt + HEAP0)) 3437 if (expect_true (active < periodiccnt + HEAP0))
2304 { 3438 {
2305 periodics [active] = periodics [periodiccnt + HEAP0]; 3439 periodics [active] = periodics [periodiccnt + HEAP0];
2306 adjustheap (periodics, periodiccnt, active); 3440 adjustheap (periodics, periodiccnt, active);
2307 } 3441 }
2308 } 3442 }
2309 3443
2310 EV_FREQUENT_CHECK;
2311
2312 ev_stop (EV_A_ (W)w); 3444 ev_stop (EV_A_ (W)w);
3445
3446 EV_FREQUENT_CHECK;
2313} 3447}
2314 3448
2315void noinline 3449void noinline
2316ev_periodic_again (EV_P_ ev_periodic *w) 3450ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2317{ 3451{
2318 /* TODO: use adjustheap and recalculation */ 3452 /* TODO: use adjustheap and recalculation */
2319 ev_periodic_stop (EV_A_ w); 3453 ev_periodic_stop (EV_A_ w);
2320 ev_periodic_start (EV_A_ w); 3454 ev_periodic_start (EV_A_ w);
2321} 3455}
… …
2323 3457
2324#ifndef SA_RESTART 3458#ifndef SA_RESTART
2325# define SA_RESTART 0 3459# define SA_RESTART 0
2326#endif 3460#endif
2327 3461
3462#if EV_SIGNAL_ENABLE
3463
2328void noinline 3464void noinline
2329ev_signal_start (EV_P_ ev_signal *w) 3465ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2330{ 3466{
2331#if EV_MULTIPLICITY
2332 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2333#endif
2334 if (expect_false (ev_is_active (w))) 3467 if (expect_false (ev_is_active (w)))
2335 return; 3468 return;
2336 3469
2337 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 3470 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2338 3471
2339 evpipe_init (EV_A); 3472#if EV_MULTIPLICITY
3473 assert (("libev: a signal must not be attached to two different loops",
3474 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2340 3475
2341 EV_FREQUENT_CHECK; 3476 signals [w->signum - 1].loop = EV_A;
3477#endif
2342 3478
3479 EV_FREQUENT_CHECK;
3480
3481#if EV_USE_SIGNALFD
3482 if (sigfd == -2)
2343 { 3483 {
2344#ifndef _WIN32 3484 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2345 sigset_t full, prev; 3485 if (sigfd < 0 && errno == EINVAL)
2346 sigfillset (&full); 3486 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2347 sigprocmask (SIG_SETMASK, &full, &prev);
2348#endif
2349 3487
2350 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 3488 if (sigfd >= 0)
3489 {
3490 fd_intern (sigfd); /* doing it twice will not hurt */
2351 3491
2352#ifndef _WIN32 3492 sigemptyset (&sigfd_set);
2353 sigprocmask (SIG_SETMASK, &prev, 0); 3493
2354#endif 3494 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3495 ev_set_priority (&sigfd_w, EV_MAXPRI);
3496 ev_io_start (EV_A_ &sigfd_w);
3497 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3498 }
2355 } 3499 }
3500
3501 if (sigfd >= 0)
3502 {
3503 /* TODO: check .head */
3504 sigaddset (&sigfd_set, w->signum);
3505 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3506
3507 signalfd (sigfd, &sigfd_set, 0);
3508 }
3509#endif
2356 3510
2357 ev_start (EV_A_ (W)w, 1); 3511 ev_start (EV_A_ (W)w, 1);
2358 wlist_add (&signals [w->signum - 1].head, (WL)w); 3512 wlist_add (&signals [w->signum - 1].head, (WL)w);
2359 3513
2360 if (!((WL)w)->next) 3514 if (!((WL)w)->next)
3515# if EV_USE_SIGNALFD
3516 if (sigfd < 0) /*TODO*/
3517# endif
2361 { 3518 {
2362#if _WIN32 3519# ifdef _WIN32
3520 evpipe_init (EV_A);
3521
2363 signal (w->signum, ev_sighandler); 3522 signal (w->signum, ev_sighandler);
2364#else 3523# else
2365 struct sigaction sa; 3524 struct sigaction sa;
3525
3526 evpipe_init (EV_A);
3527
2366 sa.sa_handler = ev_sighandler; 3528 sa.sa_handler = ev_sighandler;
2367 sigfillset (&sa.sa_mask); 3529 sigfillset (&sa.sa_mask);
2368 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3530 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2369 sigaction (w->signum, &sa, 0); 3531 sigaction (w->signum, &sa, 0);
3532
3533 if (origflags & EVFLAG_NOSIGMASK)
3534 {
3535 sigemptyset (&sa.sa_mask);
3536 sigaddset (&sa.sa_mask, w->signum);
3537 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3538 }
2370#endif 3539#endif
2371 } 3540 }
2372 3541
2373 EV_FREQUENT_CHECK; 3542 EV_FREQUENT_CHECK;
2374} 3543}
2375 3544
2376void noinline 3545void noinline
2377ev_signal_stop (EV_P_ ev_signal *w) 3546ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2378{ 3547{
2379 clear_pending (EV_A_ (W)w); 3548 clear_pending (EV_A_ (W)w);
2380 if (expect_false (!ev_is_active (w))) 3549 if (expect_false (!ev_is_active (w)))
2381 return; 3550 return;
2382 3551
… …
2384 3553
2385 wlist_del (&signals [w->signum - 1].head, (WL)w); 3554 wlist_del (&signals [w->signum - 1].head, (WL)w);
2386 ev_stop (EV_A_ (W)w); 3555 ev_stop (EV_A_ (W)w);
2387 3556
2388 if (!signals [w->signum - 1].head) 3557 if (!signals [w->signum - 1].head)
3558 {
3559#if EV_MULTIPLICITY
3560 signals [w->signum - 1].loop = 0; /* unattach from signal */
3561#endif
3562#if EV_USE_SIGNALFD
3563 if (sigfd >= 0)
3564 {
3565 sigset_t ss;
3566
3567 sigemptyset (&ss);
3568 sigaddset (&ss, w->signum);
3569 sigdelset (&sigfd_set, w->signum);
3570
3571 signalfd (sigfd, &sigfd_set, 0);
3572 sigprocmask (SIG_UNBLOCK, &ss, 0);
3573 }
3574 else
3575#endif
2389 signal (w->signum, SIG_DFL); 3576 signal (w->signum, SIG_DFL);
3577 }
2390 3578
2391 EV_FREQUENT_CHECK; 3579 EV_FREQUENT_CHECK;
2392} 3580}
3581
3582#endif
3583
3584#if EV_CHILD_ENABLE
2393 3585
2394void 3586void
2395ev_child_start (EV_P_ ev_child *w) 3587ev_child_start (EV_P_ ev_child *w) EV_THROW
2396{ 3588{
2397#if EV_MULTIPLICITY 3589#if EV_MULTIPLICITY
2398 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3590 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2399#endif 3591#endif
2400 if (expect_false (ev_is_active (w))) 3592 if (expect_false (ev_is_active (w)))
2401 return; 3593 return;
2402 3594
2403 EV_FREQUENT_CHECK; 3595 EV_FREQUENT_CHECK;
2404 3596
2405 ev_start (EV_A_ (W)w, 1); 3597 ev_start (EV_A_ (W)w, 1);
2406 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3598 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2407 3599
2408 EV_FREQUENT_CHECK; 3600 EV_FREQUENT_CHECK;
2409} 3601}
2410 3602
2411void 3603void
2412ev_child_stop (EV_P_ ev_child *w) 3604ev_child_stop (EV_P_ ev_child *w) EV_THROW
2413{ 3605{
2414 clear_pending (EV_A_ (W)w); 3606 clear_pending (EV_A_ (W)w);
2415 if (expect_false (!ev_is_active (w))) 3607 if (expect_false (!ev_is_active (w)))
2416 return; 3608 return;
2417 3609
2418 EV_FREQUENT_CHECK; 3610 EV_FREQUENT_CHECK;
2419 3611
2420 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3612 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2421 ev_stop (EV_A_ (W)w); 3613 ev_stop (EV_A_ (W)w);
2422 3614
2423 EV_FREQUENT_CHECK; 3615 EV_FREQUENT_CHECK;
2424} 3616}
3617
3618#endif
2425 3619
2426#if EV_STAT_ENABLE 3620#if EV_STAT_ENABLE
2427 3621
2428# ifdef _WIN32 3622# ifdef _WIN32
2429# undef lstat 3623# undef lstat
2430# define lstat(a,b) _stati64 (a,b) 3624# define lstat(a,b) _stati64 (a,b)
2431# endif 3625# endif
2432 3626
2433#define DEF_STAT_INTERVAL 5.0074891 3627#define DEF_STAT_INTERVAL 5.0074891
3628#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2434#define MIN_STAT_INTERVAL 0.1074891 3629#define MIN_STAT_INTERVAL 0.1074891
2435 3630
2436static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3631static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2437 3632
2438#if EV_USE_INOTIFY 3633#if EV_USE_INOTIFY
2439# define EV_INOTIFY_BUFSIZE 8192 3634
3635/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3636# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2440 3637
2441static void noinline 3638static void noinline
2442infy_add (EV_P_ ev_stat *w) 3639infy_add (EV_P_ ev_stat *w)
2443{ 3640{
2444 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); 3641 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);
2445 3642
2446 if (w->wd < 0) 3643 if (w->wd >= 0)
3644 {
3645 struct statfs sfs;
3646
3647 /* now local changes will be tracked by inotify, but remote changes won't */
3648 /* unless the filesystem is known to be local, we therefore still poll */
3649 /* also do poll on <2.6.25, but with normal frequency */
3650
3651 if (!fs_2625)
3652 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3653 else if (!statfs (w->path, &sfs)
3654 && (sfs.f_type == 0x1373 /* devfs */
3655 || sfs.f_type == 0xEF53 /* ext2/3 */
3656 || sfs.f_type == 0x3153464a /* jfs */
3657 || sfs.f_type == 0x52654973 /* reiser3 */
3658 || sfs.f_type == 0x01021994 /* tempfs */
3659 || sfs.f_type == 0x58465342 /* xfs */))
3660 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3661 else
3662 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2447 { 3663 }
2448 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 3664 else
3665 {
3666 /* can't use inotify, continue to stat */
3667 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2449 3668
2450 /* monitor some parent directory for speedup hints */ 3669 /* if path is not there, monitor some parent directory for speedup hints */
2451 /* note that exceeding the hardcoded limit is not a correctness issue, */ 3670 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2452 /* but an efficiency issue only */ 3671 /* but an efficiency issue only */
2453 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3672 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2454 { 3673 {
2455 char path [4096]; 3674 char path [4096];
2456 strcpy (path, w->path); 3675 strcpy (path, w->path);
… …
2460 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 3679 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2461 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 3680 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2462 3681
2463 char *pend = strrchr (path, '/'); 3682 char *pend = strrchr (path, '/');
2464 3683
2465 if (!pend) 3684 if (!pend || pend == path)
2466 break; /* whoops, no '/', complain to your admin */ 3685 break;
2467 3686
2468 *pend = 0; 3687 *pend = 0;
2469 w->wd = inotify_add_watch (fs_fd, path, mask); 3688 w->wd = inotify_add_watch (fs_fd, path, mask);
2470 } 3689 }
2471 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3690 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2472 } 3691 }
2473 } 3692 }
2474 else
2475 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2476 3693
2477 if (w->wd >= 0) 3694 if (w->wd >= 0)
2478 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3695 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
3696
3697 /* now re-arm timer, if required */
3698 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3699 ev_timer_again (EV_A_ &w->timer);
3700 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2479} 3701}
2480 3702
2481static void noinline 3703static void noinline
2482infy_del (EV_P_ ev_stat *w) 3704infy_del (EV_P_ ev_stat *w)
2483{ 3705{
… …
2486 3708
2487 if (wd < 0) 3709 if (wd < 0)
2488 return; 3710 return;
2489 3711
2490 w->wd = -2; 3712 w->wd = -2;
2491 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3713 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2492 wlist_del (&fs_hash [slot].head, (WL)w); 3714 wlist_del (&fs_hash [slot].head, (WL)w);
2493 3715
2494 /* remove this watcher, if others are watching it, they will rearm */ 3716 /* remove this watcher, if others are watching it, they will rearm */
2495 inotify_rm_watch (fs_fd, wd); 3717 inotify_rm_watch (fs_fd, wd);
2496} 3718}
… …
2498static void noinline 3720static void noinline
2499infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3721infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2500{ 3722{
2501 if (slot < 0) 3723 if (slot < 0)
2502 /* overflow, need to check for all hash slots */ 3724 /* overflow, need to check for all hash slots */
2503 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3725 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2504 infy_wd (EV_A_ slot, wd, ev); 3726 infy_wd (EV_A_ slot, wd, ev);
2505 else 3727 else
2506 { 3728 {
2507 WL w_; 3729 WL w_;
2508 3730
2509 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3731 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2510 { 3732 {
2511 ev_stat *w = (ev_stat *)w_; 3733 ev_stat *w = (ev_stat *)w_;
2512 w_ = w_->next; /* lets us remove this watcher and all before it */ 3734 w_ = w_->next; /* lets us remove this watcher and all before it */
2513 3735
2514 if (w->wd == wd || wd == -1) 3736 if (w->wd == wd || wd == -1)
2515 { 3737 {
2516 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3738 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2517 { 3739 {
3740 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2518 w->wd = -1; 3741 w->wd = -1;
2519 infy_add (EV_A_ w); /* re-add, no matter what */ 3742 infy_add (EV_A_ w); /* re-add, no matter what */
2520 } 3743 }
2521 3744
2522 stat_timer_cb (EV_A_ &w->timer, 0); 3745 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2527 3750
2528static void 3751static void
2529infy_cb (EV_P_ ev_io *w, int revents) 3752infy_cb (EV_P_ ev_io *w, int revents)
2530{ 3753{
2531 char buf [EV_INOTIFY_BUFSIZE]; 3754 char buf [EV_INOTIFY_BUFSIZE];
2532 struct inotify_event *ev = (struct inotify_event *)buf;
2533 int ofs; 3755 int ofs;
2534 int len = read (fs_fd, buf, sizeof (buf)); 3756 int len = read (fs_fd, buf, sizeof (buf));
2535 3757
2536 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3758 for (ofs = 0; ofs < len; )
3759 {
3760 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2537 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3761 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3762 ofs += sizeof (struct inotify_event) + ev->len;
3763 }
2538} 3764}
2539 3765
2540void inline_size 3766inline_size void ecb_cold
2541infy_init (EV_P) 3767ev_check_2625 (EV_P)
2542{ 3768{
2543 if (fs_fd != -2)
2544 return;
2545
2546 /* kernels < 2.6.25 are borked 3769 /* kernels < 2.6.25 are borked
2547 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3770 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2548 */ 3771 */
2549 { 3772 if (ev_linux_version () < 0x020619)
2550 struct utsname buf; 3773 return;
2551 int major, minor, micro;
2552 3774
3775 fs_2625 = 1;
3776}
3777
3778inline_size int
3779infy_newfd (void)
3780{
3781#if defined IN_CLOEXEC && defined IN_NONBLOCK
3782 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3783 if (fd >= 0)
3784 return fd;
3785#endif
3786 return inotify_init ();
3787}
3788
3789inline_size void
3790infy_init (EV_P)
3791{
3792 if (fs_fd != -2)
3793 return;
3794
2553 fs_fd = -1; 3795 fs_fd = -1;
2554 3796
2555 if (uname (&buf)) 3797 ev_check_2625 (EV_A);
2556 return;
2557 3798
2558 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2559 return;
2560
2561 if (major < 2
2562 || (major == 2 && minor < 6)
2563 || (major == 2 && minor == 6 && micro < 25))
2564 return;
2565 }
2566
2567 fs_fd = inotify_init (); 3799 fs_fd = infy_newfd ();
2568 3800
2569 if (fs_fd >= 0) 3801 if (fs_fd >= 0)
2570 { 3802 {
3803 fd_intern (fs_fd);
2571 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3804 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2572 ev_set_priority (&fs_w, EV_MAXPRI); 3805 ev_set_priority (&fs_w, EV_MAXPRI);
2573 ev_io_start (EV_A_ &fs_w); 3806 ev_io_start (EV_A_ &fs_w);
3807 ev_unref (EV_A);
2574 } 3808 }
2575} 3809}
2576 3810
2577void inline_size 3811inline_size void
2578infy_fork (EV_P) 3812infy_fork (EV_P)
2579{ 3813{
2580 int slot; 3814 int slot;
2581 3815
2582 if (fs_fd < 0) 3816 if (fs_fd < 0)
2583 return; 3817 return;
2584 3818
3819 ev_ref (EV_A);
3820 ev_io_stop (EV_A_ &fs_w);
2585 close (fs_fd); 3821 close (fs_fd);
2586 fs_fd = inotify_init (); 3822 fs_fd = infy_newfd ();
2587 3823
3824 if (fs_fd >= 0)
3825 {
3826 fd_intern (fs_fd);
3827 ev_io_set (&fs_w, fs_fd, EV_READ);
3828 ev_io_start (EV_A_ &fs_w);
3829 ev_unref (EV_A);
3830 }
3831
2588 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3832 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2589 { 3833 {
2590 WL w_ = fs_hash [slot].head; 3834 WL w_ = fs_hash [slot].head;
2591 fs_hash [slot].head = 0; 3835 fs_hash [slot].head = 0;
2592 3836
2593 while (w_) 3837 while (w_)
… …
2598 w->wd = -1; 3842 w->wd = -1;
2599 3843
2600 if (fs_fd >= 0) 3844 if (fs_fd >= 0)
2601 infy_add (EV_A_ w); /* re-add, no matter what */ 3845 infy_add (EV_A_ w); /* re-add, no matter what */
2602 else 3846 else
3847 {
3848 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3849 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2603 ev_timer_start (EV_A_ &w->timer); 3850 ev_timer_again (EV_A_ &w->timer);
3851 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3852 }
2604 } 3853 }
2605 } 3854 }
2606} 3855}
2607 3856
2608#endif 3857#endif
… …
2612#else 3861#else
2613# define EV_LSTAT(p,b) lstat (p, b) 3862# define EV_LSTAT(p,b) lstat (p, b)
2614#endif 3863#endif
2615 3864
2616void 3865void
2617ev_stat_stat (EV_P_ ev_stat *w) 3866ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
2618{ 3867{
2619 if (lstat (w->path, &w->attr) < 0) 3868 if (lstat (w->path, &w->attr) < 0)
2620 w->attr.st_nlink = 0; 3869 w->attr.st_nlink = 0;
2621 else if (!w->attr.st_nlink) 3870 else if (!w->attr.st_nlink)
2622 w->attr.st_nlink = 1; 3871 w->attr.st_nlink = 1;
… …
2625static void noinline 3874static void noinline
2626stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3875stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2627{ 3876{
2628 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3877 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2629 3878
2630 /* we copy this here each the time so that */ 3879 ev_statdata prev = w->attr;
2631 /* prev has the old value when the callback gets invoked */
2632 w->prev = w->attr;
2633 ev_stat_stat (EV_A_ w); 3880 ev_stat_stat (EV_A_ w);
2634 3881
2635 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3882 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2636 if ( 3883 if (
2637 w->prev.st_dev != w->attr.st_dev 3884 prev.st_dev != w->attr.st_dev
2638 || w->prev.st_ino != w->attr.st_ino 3885 || prev.st_ino != w->attr.st_ino
2639 || w->prev.st_mode != w->attr.st_mode 3886 || prev.st_mode != w->attr.st_mode
2640 || w->prev.st_nlink != w->attr.st_nlink 3887 || prev.st_nlink != w->attr.st_nlink
2641 || w->prev.st_uid != w->attr.st_uid 3888 || prev.st_uid != w->attr.st_uid
2642 || w->prev.st_gid != w->attr.st_gid 3889 || prev.st_gid != w->attr.st_gid
2643 || w->prev.st_rdev != w->attr.st_rdev 3890 || prev.st_rdev != w->attr.st_rdev
2644 || w->prev.st_size != w->attr.st_size 3891 || prev.st_size != w->attr.st_size
2645 || w->prev.st_atime != w->attr.st_atime 3892 || prev.st_atime != w->attr.st_atime
2646 || w->prev.st_mtime != w->attr.st_mtime 3893 || prev.st_mtime != w->attr.st_mtime
2647 || w->prev.st_ctime != w->attr.st_ctime 3894 || prev.st_ctime != w->attr.st_ctime
2648 ) { 3895 ) {
3896 /* we only update w->prev on actual differences */
3897 /* in case we test more often than invoke the callback, */
3898 /* to ensure that prev is always different to attr */
3899 w->prev = prev;
3900
2649 #if EV_USE_INOTIFY 3901 #if EV_USE_INOTIFY
2650 if (fs_fd >= 0) 3902 if (fs_fd >= 0)
2651 { 3903 {
2652 infy_del (EV_A_ w); 3904 infy_del (EV_A_ w);
2653 infy_add (EV_A_ w); 3905 infy_add (EV_A_ w);
… …
2658 ev_feed_event (EV_A_ w, EV_STAT); 3910 ev_feed_event (EV_A_ w, EV_STAT);
2659 } 3911 }
2660} 3912}
2661 3913
2662void 3914void
2663ev_stat_start (EV_P_ ev_stat *w) 3915ev_stat_start (EV_P_ ev_stat *w) EV_THROW
2664{ 3916{
2665 if (expect_false (ev_is_active (w))) 3917 if (expect_false (ev_is_active (w)))
2666 return; 3918 return;
2667 3919
2668 /* since we use memcmp, we need to clear any padding data etc. */
2669 memset (&w->prev, 0, sizeof (ev_statdata));
2670 memset (&w->attr, 0, sizeof (ev_statdata));
2671
2672 ev_stat_stat (EV_A_ w); 3920 ev_stat_stat (EV_A_ w);
2673 3921
3922 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2674 if (w->interval < MIN_STAT_INTERVAL) 3923 w->interval = MIN_STAT_INTERVAL;
2675 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2676 3924
2677 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3925 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2678 ev_set_priority (&w->timer, ev_priority (w)); 3926 ev_set_priority (&w->timer, ev_priority (w));
2679 3927
2680#if EV_USE_INOTIFY 3928#if EV_USE_INOTIFY
2681 infy_init (EV_A); 3929 infy_init (EV_A);
2682 3930
2683 if (fs_fd >= 0) 3931 if (fs_fd >= 0)
2684 infy_add (EV_A_ w); 3932 infy_add (EV_A_ w);
2685 else 3933 else
2686#endif 3934#endif
3935 {
2687 ev_timer_start (EV_A_ &w->timer); 3936 ev_timer_again (EV_A_ &w->timer);
3937 ev_unref (EV_A);
3938 }
2688 3939
2689 ev_start (EV_A_ (W)w, 1); 3940 ev_start (EV_A_ (W)w, 1);
2690 3941
2691 EV_FREQUENT_CHECK; 3942 EV_FREQUENT_CHECK;
2692} 3943}
2693 3944
2694void 3945void
2695ev_stat_stop (EV_P_ ev_stat *w) 3946ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
2696{ 3947{
2697 clear_pending (EV_A_ (W)w); 3948 clear_pending (EV_A_ (W)w);
2698 if (expect_false (!ev_is_active (w))) 3949 if (expect_false (!ev_is_active (w)))
2699 return; 3950 return;
2700 3951
2701 EV_FREQUENT_CHECK; 3952 EV_FREQUENT_CHECK;
2702 3953
2703#if EV_USE_INOTIFY 3954#if EV_USE_INOTIFY
2704 infy_del (EV_A_ w); 3955 infy_del (EV_A_ w);
2705#endif 3956#endif
3957
3958 if (ev_is_active (&w->timer))
3959 {
3960 ev_ref (EV_A);
2706 ev_timer_stop (EV_A_ &w->timer); 3961 ev_timer_stop (EV_A_ &w->timer);
3962 }
2707 3963
2708 ev_stop (EV_A_ (W)w); 3964 ev_stop (EV_A_ (W)w);
2709 3965
2710 EV_FREQUENT_CHECK; 3966 EV_FREQUENT_CHECK;
2711} 3967}
2712#endif 3968#endif
2713 3969
2714#if EV_IDLE_ENABLE 3970#if EV_IDLE_ENABLE
2715void 3971void
2716ev_idle_start (EV_P_ ev_idle *w) 3972ev_idle_start (EV_P_ ev_idle *w) EV_THROW
2717{ 3973{
2718 if (expect_false (ev_is_active (w))) 3974 if (expect_false (ev_is_active (w)))
2719 return; 3975 return;
2720 3976
2721 pri_adjust (EV_A_ (W)w); 3977 pri_adjust (EV_A_ (W)w);
… …
2734 3990
2735 EV_FREQUENT_CHECK; 3991 EV_FREQUENT_CHECK;
2736} 3992}
2737 3993
2738void 3994void
2739ev_idle_stop (EV_P_ ev_idle *w) 3995ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
2740{ 3996{
2741 clear_pending (EV_A_ (W)w); 3997 clear_pending (EV_A_ (W)w);
2742 if (expect_false (!ev_is_active (w))) 3998 if (expect_false (!ev_is_active (w)))
2743 return; 3999 return;
2744 4000
… …
2756 4012
2757 EV_FREQUENT_CHECK; 4013 EV_FREQUENT_CHECK;
2758} 4014}
2759#endif 4015#endif
2760 4016
4017#if EV_PREPARE_ENABLE
2761void 4018void
2762ev_prepare_start (EV_P_ ev_prepare *w) 4019ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
2763{ 4020{
2764 if (expect_false (ev_is_active (w))) 4021 if (expect_false (ev_is_active (w)))
2765 return; 4022 return;
2766 4023
2767 EV_FREQUENT_CHECK; 4024 EV_FREQUENT_CHECK;
… …
2772 4029
2773 EV_FREQUENT_CHECK; 4030 EV_FREQUENT_CHECK;
2774} 4031}
2775 4032
2776void 4033void
2777ev_prepare_stop (EV_P_ ev_prepare *w) 4034ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
2778{ 4035{
2779 clear_pending (EV_A_ (W)w); 4036 clear_pending (EV_A_ (W)w);
2780 if (expect_false (!ev_is_active (w))) 4037 if (expect_false (!ev_is_active (w)))
2781 return; 4038 return;
2782 4039
… …
2791 4048
2792 ev_stop (EV_A_ (W)w); 4049 ev_stop (EV_A_ (W)w);
2793 4050
2794 EV_FREQUENT_CHECK; 4051 EV_FREQUENT_CHECK;
2795} 4052}
4053#endif
2796 4054
4055#if EV_CHECK_ENABLE
2797void 4056void
2798ev_check_start (EV_P_ ev_check *w) 4057ev_check_start (EV_P_ ev_check *w) EV_THROW
2799{ 4058{
2800 if (expect_false (ev_is_active (w))) 4059 if (expect_false (ev_is_active (w)))
2801 return; 4060 return;
2802 4061
2803 EV_FREQUENT_CHECK; 4062 EV_FREQUENT_CHECK;
… …
2808 4067
2809 EV_FREQUENT_CHECK; 4068 EV_FREQUENT_CHECK;
2810} 4069}
2811 4070
2812void 4071void
2813ev_check_stop (EV_P_ ev_check *w) 4072ev_check_stop (EV_P_ ev_check *w) EV_THROW
2814{ 4073{
2815 clear_pending (EV_A_ (W)w); 4074 clear_pending (EV_A_ (W)w);
2816 if (expect_false (!ev_is_active (w))) 4075 if (expect_false (!ev_is_active (w)))
2817 return; 4076 return;
2818 4077
… …
2827 4086
2828 ev_stop (EV_A_ (W)w); 4087 ev_stop (EV_A_ (W)w);
2829 4088
2830 EV_FREQUENT_CHECK; 4089 EV_FREQUENT_CHECK;
2831} 4090}
4091#endif
2832 4092
2833#if EV_EMBED_ENABLE 4093#if EV_EMBED_ENABLE
2834void noinline 4094void noinline
2835ev_embed_sweep (EV_P_ ev_embed *w) 4095ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
2836{ 4096{
2837 ev_loop (w->other, EVLOOP_NONBLOCK); 4097 ev_run (w->other, EVRUN_NOWAIT);
2838} 4098}
2839 4099
2840static void 4100static void
2841embed_io_cb (EV_P_ ev_io *io, int revents) 4101embed_io_cb (EV_P_ ev_io *io, int revents)
2842{ 4102{
2843 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4103 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2844 4104
2845 if (ev_cb (w)) 4105 if (ev_cb (w))
2846 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4106 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2847 else 4107 else
2848 ev_loop (w->other, EVLOOP_NONBLOCK); 4108 ev_run (w->other, EVRUN_NOWAIT);
2849} 4109}
2850 4110
2851static void 4111static void
2852embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4112embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2853{ 4113{
2854 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4114 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2855 4115
2856 { 4116 {
2857 struct ev_loop *loop = w->other; 4117 EV_P = w->other;
2858 4118
2859 while (fdchangecnt) 4119 while (fdchangecnt)
2860 { 4120 {
2861 fd_reify (EV_A); 4121 fd_reify (EV_A);
2862 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4122 ev_run (EV_A_ EVRUN_NOWAIT);
2863 } 4123 }
2864 } 4124 }
2865} 4125}
2866 4126
2867static void 4127static void
2868embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 4128embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
2869{ 4129{
2870 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 4130 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2871 4131
4132 ev_embed_stop (EV_A_ w);
4133
2872 { 4134 {
2873 struct ev_loop *loop = w->other; 4135 EV_P = w->other;
2874 4136
2875 ev_loop_fork (EV_A); 4137 ev_loop_fork (EV_A);
4138 ev_run (EV_A_ EVRUN_NOWAIT);
2876 } 4139 }
4140
4141 ev_embed_start (EV_A_ w);
2877} 4142}
2878 4143
2879#if 0 4144#if 0
2880static void 4145static void
2881embed_idle_cb (EV_P_ ev_idle *idle, int revents) 4146embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2883 ev_idle_stop (EV_A_ idle); 4148 ev_idle_stop (EV_A_ idle);
2884} 4149}
2885#endif 4150#endif
2886 4151
2887void 4152void
2888ev_embed_start (EV_P_ ev_embed *w) 4153ev_embed_start (EV_P_ ev_embed *w) EV_THROW
2889{ 4154{
2890 if (expect_false (ev_is_active (w))) 4155 if (expect_false (ev_is_active (w)))
2891 return; 4156 return;
2892 4157
2893 { 4158 {
2894 struct ev_loop *loop = w->other; 4159 EV_P = w->other;
2895 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4160 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2896 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4161 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2897 } 4162 }
2898 4163
2899 EV_FREQUENT_CHECK; 4164 EV_FREQUENT_CHECK;
2900 4165
… …
2914 4179
2915 EV_FREQUENT_CHECK; 4180 EV_FREQUENT_CHECK;
2916} 4181}
2917 4182
2918void 4183void
2919ev_embed_stop (EV_P_ ev_embed *w) 4184ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
2920{ 4185{
2921 clear_pending (EV_A_ (W)w); 4186 clear_pending (EV_A_ (W)w);
2922 if (expect_false (!ev_is_active (w))) 4187 if (expect_false (!ev_is_active (w)))
2923 return; 4188 return;
2924 4189
… …
2926 4191
2927 ev_io_stop (EV_A_ &w->io); 4192 ev_io_stop (EV_A_ &w->io);
2928 ev_prepare_stop (EV_A_ &w->prepare); 4193 ev_prepare_stop (EV_A_ &w->prepare);
2929 ev_fork_stop (EV_A_ &w->fork); 4194 ev_fork_stop (EV_A_ &w->fork);
2930 4195
4196 ev_stop (EV_A_ (W)w);
4197
2931 EV_FREQUENT_CHECK; 4198 EV_FREQUENT_CHECK;
2932} 4199}
2933#endif 4200#endif
2934 4201
2935#if EV_FORK_ENABLE 4202#if EV_FORK_ENABLE
2936void 4203void
2937ev_fork_start (EV_P_ ev_fork *w) 4204ev_fork_start (EV_P_ ev_fork *w) EV_THROW
2938{ 4205{
2939 if (expect_false (ev_is_active (w))) 4206 if (expect_false (ev_is_active (w)))
2940 return; 4207 return;
2941 4208
2942 EV_FREQUENT_CHECK; 4209 EV_FREQUENT_CHECK;
… …
2947 4214
2948 EV_FREQUENT_CHECK; 4215 EV_FREQUENT_CHECK;
2949} 4216}
2950 4217
2951void 4218void
2952ev_fork_stop (EV_P_ ev_fork *w) 4219ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
2953{ 4220{
2954 clear_pending (EV_A_ (W)w); 4221 clear_pending (EV_A_ (W)w);
2955 if (expect_false (!ev_is_active (w))) 4222 if (expect_false (!ev_is_active (w)))
2956 return; 4223 return;
2957 4224
… …
2968 4235
2969 EV_FREQUENT_CHECK; 4236 EV_FREQUENT_CHECK;
2970} 4237}
2971#endif 4238#endif
2972 4239
4240#if EV_CLEANUP_ENABLE
4241void
4242ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4243{
4244 if (expect_false (ev_is_active (w)))
4245 return;
4246
4247 EV_FREQUENT_CHECK;
4248
4249 ev_start (EV_A_ (W)w, ++cleanupcnt);
4250 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4251 cleanups [cleanupcnt - 1] = w;
4252
4253 /* cleanup watchers should never keep a refcount on the loop */
4254 ev_unref (EV_A);
4255 EV_FREQUENT_CHECK;
4256}
4257
4258void
4259ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4260{
4261 clear_pending (EV_A_ (W)w);
4262 if (expect_false (!ev_is_active (w)))
4263 return;
4264
4265 EV_FREQUENT_CHECK;
4266 ev_ref (EV_A);
4267
4268 {
4269 int active = ev_active (w);
4270
4271 cleanups [active - 1] = cleanups [--cleanupcnt];
4272 ev_active (cleanups [active - 1]) = active;
4273 }
4274
4275 ev_stop (EV_A_ (W)w);
4276
4277 EV_FREQUENT_CHECK;
4278}
4279#endif
4280
2973#if EV_ASYNC_ENABLE 4281#if EV_ASYNC_ENABLE
2974void 4282void
2975ev_async_start (EV_P_ ev_async *w) 4283ev_async_start (EV_P_ ev_async *w) EV_THROW
2976{ 4284{
2977 if (expect_false (ev_is_active (w))) 4285 if (expect_false (ev_is_active (w)))
2978 return; 4286 return;
4287
4288 w->sent = 0;
2979 4289
2980 evpipe_init (EV_A); 4290 evpipe_init (EV_A);
2981 4291
2982 EV_FREQUENT_CHECK; 4292 EV_FREQUENT_CHECK;
2983 4293
… …
2987 4297
2988 EV_FREQUENT_CHECK; 4298 EV_FREQUENT_CHECK;
2989} 4299}
2990 4300
2991void 4301void
2992ev_async_stop (EV_P_ ev_async *w) 4302ev_async_stop (EV_P_ ev_async *w) EV_THROW
2993{ 4303{
2994 clear_pending (EV_A_ (W)w); 4304 clear_pending (EV_A_ (W)w);
2995 if (expect_false (!ev_is_active (w))) 4305 if (expect_false (!ev_is_active (w)))
2996 return; 4306 return;
2997 4307
… …
3008 4318
3009 EV_FREQUENT_CHECK; 4319 EV_FREQUENT_CHECK;
3010} 4320}
3011 4321
3012void 4322void
3013ev_async_send (EV_P_ ev_async *w) 4323ev_async_send (EV_P_ ev_async *w) EV_THROW
3014{ 4324{
3015 w->sent = 1; 4325 w->sent = 1;
3016 evpipe_write (EV_A_ &gotasync); 4326 evpipe_write (EV_A_ &async_pending);
3017} 4327}
3018#endif 4328#endif
3019 4329
3020/*****************************************************************************/ 4330/*****************************************************************************/
3021 4331
… …
3055 4365
3056 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4366 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3057} 4367}
3058 4368
3059void 4369void
3060ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4370ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3061{ 4371{
3062 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4372 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3063 4373
3064 if (expect_false (!once)) 4374 if (expect_false (!once))
3065 { 4375 {
3066 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4376 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3067 return; 4377 return;
3068 } 4378 }
3069 4379
3070 once->cb = cb; 4380 once->cb = cb;
3071 once->arg = arg; 4381 once->arg = arg;
… …
3083 ev_timer_set (&once->to, timeout, 0.); 4393 ev_timer_set (&once->to, timeout, 0.);
3084 ev_timer_start (EV_A_ &once->to); 4394 ev_timer_start (EV_A_ &once->to);
3085 } 4395 }
3086} 4396}
3087 4397
4398/*****************************************************************************/
4399
4400#if EV_WALK_ENABLE
4401void ecb_cold
4402ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
4403{
4404 int i, j;
4405 ev_watcher_list *wl, *wn;
4406
4407 if (types & (EV_IO | EV_EMBED))
4408 for (i = 0; i < anfdmax; ++i)
4409 for (wl = anfds [i].head; wl; )
4410 {
4411 wn = wl->next;
4412
4413#if EV_EMBED_ENABLE
4414 if (ev_cb ((ev_io *)wl) == embed_io_cb)
4415 {
4416 if (types & EV_EMBED)
4417 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
4418 }
4419 else
4420#endif
4421#if EV_USE_INOTIFY
4422 if (ev_cb ((ev_io *)wl) == infy_cb)
4423 ;
4424 else
4425#endif
4426 if ((ev_io *)wl != &pipe_w)
4427 if (types & EV_IO)
4428 cb (EV_A_ EV_IO, wl);
4429
4430 wl = wn;
4431 }
4432
4433 if (types & (EV_TIMER | EV_STAT))
4434 for (i = timercnt + HEAP0; i-- > HEAP0; )
4435#if EV_STAT_ENABLE
4436 /*TODO: timer is not always active*/
4437 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
4438 {
4439 if (types & EV_STAT)
4440 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
4441 }
4442 else
4443#endif
4444 if (types & EV_TIMER)
4445 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
4446
4447#if EV_PERIODIC_ENABLE
4448 if (types & EV_PERIODIC)
4449 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
4450 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
4451#endif
4452
4453#if EV_IDLE_ENABLE
4454 if (types & EV_IDLE)
4455 for (j = NUMPRI; j--; )
4456 for (i = idlecnt [j]; i--; )
4457 cb (EV_A_ EV_IDLE, idles [j][i]);
4458#endif
4459
4460#if EV_FORK_ENABLE
4461 if (types & EV_FORK)
4462 for (i = forkcnt; i--; )
4463 if (ev_cb (forks [i]) != embed_fork_cb)
4464 cb (EV_A_ EV_FORK, forks [i]);
4465#endif
4466
4467#if EV_ASYNC_ENABLE
4468 if (types & EV_ASYNC)
4469 for (i = asynccnt; i--; )
4470 cb (EV_A_ EV_ASYNC, asyncs [i]);
4471#endif
4472
4473#if EV_PREPARE_ENABLE
4474 if (types & EV_PREPARE)
4475 for (i = preparecnt; i--; )
4476# if EV_EMBED_ENABLE
4477 if (ev_cb (prepares [i]) != embed_prepare_cb)
4478# endif
4479 cb (EV_A_ EV_PREPARE, prepares [i]);
4480#endif
4481
4482#if EV_CHECK_ENABLE
4483 if (types & EV_CHECK)
4484 for (i = checkcnt; i--; )
4485 cb (EV_A_ EV_CHECK, checks [i]);
4486#endif
4487
4488#if EV_SIGNAL_ENABLE
4489 if (types & EV_SIGNAL)
4490 for (i = 0; i < EV_NSIG - 1; ++i)
4491 for (wl = signals [i].head; wl; )
4492 {
4493 wn = wl->next;
4494 cb (EV_A_ EV_SIGNAL, wl);
4495 wl = wn;
4496 }
4497#endif
4498
4499#if EV_CHILD_ENABLE
4500 if (types & EV_CHILD)
4501 for (i = (EV_PID_HASHSIZE); i--; )
4502 for (wl = childs [i]; wl; )
4503 {
4504 wn = wl->next;
4505 cb (EV_A_ EV_CHILD, wl);
4506 wl = wn;
4507 }
4508#endif
4509/* EV_STAT 0x00001000 /* stat data changed */
4510/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
4511}
4512#endif
4513
3088#if EV_MULTIPLICITY 4514#if EV_MULTIPLICITY
3089 #include "ev_wrap.h" 4515 #include "ev_wrap.h"
3090#endif 4516#endif
3091 4517
3092#ifdef __cplusplus
3093}
3094#endif
3095

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