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Comparing libev/ev.c (file contents):
Revision 1.263 by root, Wed Oct 1 18:50:03 2008 UTC vs.
Revision 1.418 by root, Mon Apr 2 23:14:41 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>
… …
160# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
161# include <windows.h> 206# include <windows.h>
162# ifndef EV_SELECT_IS_WINSOCKET 207# ifndef EV_SELECT_IS_WINSOCKET
163# define EV_SELECT_IS_WINSOCKET 1 208# define EV_SELECT_IS_WINSOCKET 1
164# endif 209# endif
210# undef EV_AVOID_STDIO
165#endif 211#endif
212
213/* OS X, in its infinite idiocy, actually HARDCODES
214 * a limit of 1024 into their select. Where people have brains,
215 * OS X engineers apparently have a vacuum. Or maybe they were
216 * ordered to have a vacuum, or they do anything for money.
217 * This might help. Or not.
218 */
219#define _DARWIN_UNLIMITED_SELECT 1
166 220
167/* this block tries to deduce configuration from header-defined symbols and defaults */ 221/* this block tries to deduce configuration from header-defined symbols and defaults */
168 222
223/* try to deduce the maximum number of signals on this platform */
224#if defined EV_NSIG
225/* use what's provided */
226#elif defined NSIG
227# define EV_NSIG (NSIG)
228#elif defined _NSIG
229# define EV_NSIG (_NSIG)
230#elif defined SIGMAX
231# define EV_NSIG (SIGMAX+1)
232#elif defined SIG_MAX
233# define EV_NSIG (SIG_MAX+1)
234#elif defined _SIG_MAX
235# define EV_NSIG (_SIG_MAX+1)
236#elif defined MAXSIG
237# define EV_NSIG (MAXSIG+1)
238#elif defined MAX_SIG
239# define EV_NSIG (MAX_SIG+1)
240#elif defined SIGARRAYSIZE
241# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
242#elif defined _sys_nsig
243# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
244#else
245# error "unable to find value for NSIG, please report"
246/* to make it compile regardless, just remove the above line, */
247/* but consider reporting it, too! :) */
248# define EV_NSIG 65
249#endif
250
251#ifndef EV_USE_FLOOR
252# define EV_USE_FLOOR 0
253#endif
254
255#ifndef EV_USE_CLOCK_SYSCALL
256# if __linux && __GLIBC__ >= 2
257# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
258# else
259# define EV_USE_CLOCK_SYSCALL 0
260# endif
261#endif
262
169#ifndef EV_USE_MONOTONIC 263#ifndef EV_USE_MONOTONIC
170# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 264# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
171# define EV_USE_MONOTONIC 1 265# define EV_USE_MONOTONIC EV_FEATURE_OS
172# else 266# else
173# define EV_USE_MONOTONIC 0 267# define EV_USE_MONOTONIC 0
174# endif 268# endif
175#endif 269#endif
176 270
177#ifndef EV_USE_REALTIME 271#ifndef EV_USE_REALTIME
178# define EV_USE_REALTIME 0 272# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
179#endif 273#endif
180 274
181#ifndef EV_USE_NANOSLEEP 275#ifndef EV_USE_NANOSLEEP
182# if _POSIX_C_SOURCE >= 199309L 276# if _POSIX_C_SOURCE >= 199309L
183# define EV_USE_NANOSLEEP 1 277# define EV_USE_NANOSLEEP EV_FEATURE_OS
184# else 278# else
185# define EV_USE_NANOSLEEP 0 279# define EV_USE_NANOSLEEP 0
186# endif 280# endif
187#endif 281#endif
188 282
189#ifndef EV_USE_SELECT 283#ifndef EV_USE_SELECT
190# define EV_USE_SELECT 1 284# define EV_USE_SELECT EV_FEATURE_BACKENDS
191#endif 285#endif
192 286
193#ifndef EV_USE_POLL 287#ifndef EV_USE_POLL
194# ifdef _WIN32 288# ifdef _WIN32
195# define EV_USE_POLL 0 289# define EV_USE_POLL 0
196# else 290# else
197# define EV_USE_POLL 1 291# define EV_USE_POLL EV_FEATURE_BACKENDS
198# endif 292# endif
199#endif 293#endif
200 294
201#ifndef EV_USE_EPOLL 295#ifndef EV_USE_EPOLL
202# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 296# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
203# define EV_USE_EPOLL 1 297# define EV_USE_EPOLL EV_FEATURE_BACKENDS
204# else 298# else
205# define EV_USE_EPOLL 0 299# define EV_USE_EPOLL 0
206# endif 300# endif
207#endif 301#endif
208 302
… …
214# define EV_USE_PORT 0 308# define EV_USE_PORT 0
215#endif 309#endif
216 310
217#ifndef EV_USE_INOTIFY 311#ifndef EV_USE_INOTIFY
218# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 312# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
219# define EV_USE_INOTIFY 1 313# define EV_USE_INOTIFY EV_FEATURE_OS
220# else 314# else
221# define EV_USE_INOTIFY 0 315# define EV_USE_INOTIFY 0
222# endif 316# endif
223#endif 317#endif
224 318
225#ifndef EV_PID_HASHSIZE 319#ifndef EV_PID_HASHSIZE
226# if EV_MINIMAL 320# 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 321#endif
232 322
233#ifndef EV_INOTIFY_HASHSIZE 323#ifndef EV_INOTIFY_HASHSIZE
234# if EV_MINIMAL 324# 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 325#endif
240 326
241#ifndef EV_USE_EVENTFD 327#ifndef EV_USE_EVENTFD
242# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 328# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
243# define EV_USE_EVENTFD 1 329# define EV_USE_EVENTFD EV_FEATURE_OS
244# else 330# else
245# define EV_USE_EVENTFD 0 331# define EV_USE_EVENTFD 0
332# endif
333#endif
334
335#ifndef EV_USE_SIGNALFD
336# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
337# define EV_USE_SIGNALFD EV_FEATURE_OS
338# else
339# define EV_USE_SIGNALFD 0
246# endif 340# endif
247#endif 341#endif
248 342
249#if 0 /* debugging */ 343#if 0 /* debugging */
250# define EV_VERIFY 3 344# define EV_VERIFY 3
251# define EV_USE_4HEAP 1 345# define EV_USE_4HEAP 1
252# define EV_HEAP_CACHE_AT 1 346# define EV_HEAP_CACHE_AT 1
253#endif 347#endif
254 348
255#ifndef EV_VERIFY 349#ifndef EV_VERIFY
256# define EV_VERIFY !EV_MINIMAL 350# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
257#endif 351#endif
258 352
259#ifndef EV_USE_4HEAP 353#ifndef EV_USE_4HEAP
260# define EV_USE_4HEAP !EV_MINIMAL 354# define EV_USE_4HEAP EV_FEATURE_DATA
261#endif 355#endif
262 356
263#ifndef EV_HEAP_CACHE_AT 357#ifndef EV_HEAP_CACHE_AT
264# define EV_HEAP_CACHE_AT !EV_MINIMAL 358# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
359#endif
360
361/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
362/* which makes programs even slower. might work on other unices, too. */
363#if EV_USE_CLOCK_SYSCALL
364# include <syscall.h>
365# ifdef SYS_clock_gettime
366# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
367# undef EV_USE_MONOTONIC
368# define EV_USE_MONOTONIC 1
369# else
370# undef EV_USE_CLOCK_SYSCALL
371# define EV_USE_CLOCK_SYSCALL 0
372# endif
265#endif 373#endif
266 374
267/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 375/* this block fixes any misconfiguration where we know we run into trouble otherwise */
376
377#ifdef _AIX
378/* AIX has a completely broken poll.h header */
379# undef EV_USE_POLL
380# define EV_USE_POLL 0
381#endif
268 382
269#ifndef CLOCK_MONOTONIC 383#ifndef CLOCK_MONOTONIC
270# undef EV_USE_MONOTONIC 384# undef EV_USE_MONOTONIC
271# define EV_USE_MONOTONIC 0 385# define EV_USE_MONOTONIC 0
272#endif 386#endif
… …
280# undef EV_USE_INOTIFY 394# undef EV_USE_INOTIFY
281# define EV_USE_INOTIFY 0 395# define EV_USE_INOTIFY 0
282#endif 396#endif
283 397
284#if !EV_USE_NANOSLEEP 398#if !EV_USE_NANOSLEEP
285# ifndef _WIN32 399/* hp-ux has it in sys/time.h, which we unconditionally include above */
400# if !defined _WIN32 && !defined __hpux
286# include <sys/select.h> 401# include <sys/select.h>
287# endif 402# endif
288#endif 403#endif
289 404
290#if EV_USE_INOTIFY 405#if EV_USE_INOTIFY
406# include <sys/statfs.h>
291# include <sys/inotify.h> 407# include <sys/inotify.h>
292/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 408/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
293# ifndef IN_DONT_FOLLOW 409# ifndef IN_DONT_FOLLOW
294# undef EV_USE_INOTIFY 410# undef EV_USE_INOTIFY
295# define EV_USE_INOTIFY 0 411# define EV_USE_INOTIFY 0
… …
301#endif 417#endif
302 418
303#if EV_USE_EVENTFD 419#if EV_USE_EVENTFD
304/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 420/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
305# include <stdint.h> 421# include <stdint.h>
306# ifdef __cplusplus 422# ifndef EFD_NONBLOCK
307extern "C" { 423# define EFD_NONBLOCK O_NONBLOCK
308# endif 424# endif
309int eventfd (unsigned int initval, int flags); 425# ifndef EFD_CLOEXEC
310# ifdef __cplusplus 426# ifdef O_CLOEXEC
311} 427# define EFD_CLOEXEC O_CLOEXEC
428# else
429# define EFD_CLOEXEC 02000000
430# endif
312# endif 431# endif
432EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
433#endif
434
435#if EV_USE_SIGNALFD
436/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
437# include <stdint.h>
438# ifndef SFD_NONBLOCK
439# define SFD_NONBLOCK O_NONBLOCK
440# endif
441# ifndef SFD_CLOEXEC
442# ifdef O_CLOEXEC
443# define SFD_CLOEXEC O_CLOEXEC
444# else
445# define SFD_CLOEXEC 02000000
446# endif
447# endif
448EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
449
450struct signalfd_siginfo
451{
452 uint32_t ssi_signo;
453 char pad[128 - sizeof (uint32_t)];
454};
313#endif 455#endif
314 456
315/**/ 457/**/
316 458
317#if EV_VERIFY >= 3 459#if EV_VERIFY >= 3
318# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 460# define EV_FREQUENT_CHECK ev_verify (EV_A)
319#else 461#else
320# define EV_FREQUENT_CHECK do { } while (0) 462# define EV_FREQUENT_CHECK do { } while (0)
321#endif 463#endif
322 464
323/* 465/*
324 * This is used to avoid floating point rounding problems. 466 * This is used to work around floating point rounding problems.
325 * It is added to ev_rt_now when scheduling periodics
326 * to ensure progress, time-wise, even when rounding
327 * errors are against us.
328 * This value is good at least till the year 4000. 467 * This value is good at least till the year 4000.
329 * Better solutions welcome.
330 */ 468 */
331#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 469#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
470/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
332 471
333#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 472#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
334#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 473#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
335/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
336 474
475#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
476#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
477
478/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
479/* ECB.H BEGIN */
480/*
481 * libecb - http://software.schmorp.de/pkg/libecb
482 *
483 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de>
484 * Copyright (©) 2011 Emanuele Giaquinta
485 * All rights reserved.
486 *
487 * Redistribution and use in source and binary forms, with or without modifica-
488 * tion, are permitted provided that the following conditions are met:
489 *
490 * 1. Redistributions of source code must retain the above copyright notice,
491 * this list of conditions and the following disclaimer.
492 *
493 * 2. Redistributions in binary form must reproduce the above copyright
494 * notice, this list of conditions and the following disclaimer in the
495 * documentation and/or other materials provided with the distribution.
496 *
497 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
498 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
499 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
500 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
501 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
502 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
503 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
504 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
505 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
506 * OF THE POSSIBILITY OF SUCH DAMAGE.
507 */
508
509#ifndef ECB_H
510#define ECB_H
511
512#ifdef _WIN32
513 typedef signed char int8_t;
514 typedef unsigned char uint8_t;
515 typedef signed short int16_t;
516 typedef unsigned short uint16_t;
517 typedef signed int int32_t;
518 typedef unsigned int uint32_t;
337#if __GNUC__ >= 4 519 #if __GNUC__
338# define expect(expr,value) __builtin_expect ((expr),(value)) 520 typedef signed long long int64_t;
339# define noinline __attribute__ ((noinline)) 521 typedef unsigned long long uint64_t;
522 #else /* _MSC_VER || __BORLANDC__ */
523 typedef signed __int64 int64_t;
524 typedef unsigned __int64 uint64_t;
525 #endif
340#else 526#else
341# define expect(expr,value) (expr) 527 #include <inttypes.h>
342# define noinline
343# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
344# define inline
345# endif 528#endif
529
530/* many compilers define _GNUC_ to some versions but then only implement
531 * what their idiot authors think are the "more important" extensions,
532 * causing enormous grief in return for some better fake benchmark numbers.
533 * or so.
534 * we try to detect these and simply assume they are not gcc - if they have
535 * an issue with that they should have done it right in the first place.
536 */
537#ifndef ECB_GCC_VERSION
538 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
539 #define ECB_GCC_VERSION(major,minor) 0
540 #else
541 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
346#endif 542 #endif
543#endif
347 544
545/*****************************************************************************/
546
547/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
548/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
549
550#if ECB_NO_THREADS
551# define ECB_NO_SMP 1
552#endif
553
554#if ECB_NO_THREADS || ECB_NO_SMP
555 #define ECB_MEMORY_FENCE do { } while (0)
556#endif
557
558#ifndef ECB_MEMORY_FENCE
559 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
560 #if __i386 || __i386__
561 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
562 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */
563 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */
564 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
565 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
566 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
567 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */
568 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
569 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
570 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
571 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
572 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
573 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
574 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
575 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
576 #elif __sparc || __sparc__
577 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad | " : : : "memory")
578 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
579 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
580 #elif defined __s390__ || defined __s390x__
581 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
582 #elif defined __mips__
583 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
584 #endif
585 #endif
586#endif
587
588#ifndef ECB_MEMORY_FENCE
589 #if ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
590 #define ECB_MEMORY_FENCE __sync_synchronize ()
591 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */
592 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */
593 #elif _MSC_VER >= 1400 /* VC++ 2005 */
594 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
595 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
596 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
597 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
598 #elif defined _WIN32
599 #include <WinNT.h>
600 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
601 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
602 #include <mbarrier.h>
603 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
604 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
605 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
606 #elif __xlC__
607 #define ECB_MEMORY_FENCE __sync ()
608 #endif
609#endif
610
611#ifndef ECB_MEMORY_FENCE
612 #if !ECB_AVOID_PTHREADS
613 /*
614 * if you get undefined symbol references to pthread_mutex_lock,
615 * or failure to find pthread.h, then you should implement
616 * the ECB_MEMORY_FENCE operations for your cpu/compiler
617 * OR provide pthread.h and link against the posix thread library
618 * of your system.
619 */
620 #include <pthread.h>
621 #define ECB_NEEDS_PTHREADS 1
622 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
623
624 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
625 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
626 #endif
627#endif
628
629#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
630 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
631#endif
632
633#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
634 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
635#endif
636
637/*****************************************************************************/
638
639#define ECB_C99 (__STDC_VERSION__ >= 199901L)
640
641#if __cplusplus
642 #define ecb_inline static inline
643#elif ECB_GCC_VERSION(2,5)
644 #define ecb_inline static __inline__
645#elif ECB_C99
646 #define ecb_inline static inline
647#else
648 #define ecb_inline static
649#endif
650
651#if ECB_GCC_VERSION(3,3)
652 #define ecb_restrict __restrict__
653#elif ECB_C99
654 #define ecb_restrict restrict
655#else
656 #define ecb_restrict
657#endif
658
659typedef int ecb_bool;
660
661#define ECB_CONCAT_(a, b) a ## b
662#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
663#define ECB_STRINGIFY_(a) # a
664#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
665
666#define ecb_function_ ecb_inline
667
668#if ECB_GCC_VERSION(3,1)
669 #define ecb_attribute(attrlist) __attribute__(attrlist)
670 #define ecb_is_constant(expr) __builtin_constant_p (expr)
671 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
672 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
673#else
674 #define ecb_attribute(attrlist)
675 #define ecb_is_constant(expr) 0
676 #define ecb_expect(expr,value) (expr)
677 #define ecb_prefetch(addr,rw,locality)
678#endif
679
680/* no emulation for ecb_decltype */
681#if ECB_GCC_VERSION(4,5)
682 #define ecb_decltype(x) __decltype(x)
683#elif ECB_GCC_VERSION(3,0)
684 #define ecb_decltype(x) __typeof(x)
685#endif
686
687#define ecb_noinline ecb_attribute ((__noinline__))
688#define ecb_noreturn ecb_attribute ((__noreturn__))
689#define ecb_unused ecb_attribute ((__unused__))
690#define ecb_const ecb_attribute ((__const__))
691#define ecb_pure ecb_attribute ((__pure__))
692
693#if ECB_GCC_VERSION(4,3)
694 #define ecb_artificial ecb_attribute ((__artificial__))
695 #define ecb_hot ecb_attribute ((__hot__))
696 #define ecb_cold ecb_attribute ((__cold__))
697#else
698 #define ecb_artificial
699 #define ecb_hot
700 #define ecb_cold
701#endif
702
703/* put around conditional expressions if you are very sure that the */
704/* expression is mostly true or mostly false. note that these return */
705/* booleans, not the expression. */
348#define expect_false(expr) expect ((expr) != 0, 0) 706#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
349#define expect_true(expr) expect ((expr) != 0, 1) 707#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
708/* for compatibility to the rest of the world */
709#define ecb_likely(expr) ecb_expect_true (expr)
710#define ecb_unlikely(expr) ecb_expect_false (expr)
711
712/* count trailing zero bits and count # of one bits */
713#if ECB_GCC_VERSION(3,4)
714 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
715 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
716 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
717 #define ecb_ctz32(x) __builtin_ctz (x)
718 #define ecb_ctz64(x) __builtin_ctzll (x)
719 #define ecb_popcount32(x) __builtin_popcount (x)
720 /* no popcountll */
721#else
722 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
723 ecb_function_ int
724 ecb_ctz32 (uint32_t x)
725 {
726 int r = 0;
727
728 x &= ~x + 1; /* this isolates the lowest bit */
729
730#if ECB_branchless_on_i386
731 r += !!(x & 0xaaaaaaaa) << 0;
732 r += !!(x & 0xcccccccc) << 1;
733 r += !!(x & 0xf0f0f0f0) << 2;
734 r += !!(x & 0xff00ff00) << 3;
735 r += !!(x & 0xffff0000) << 4;
736#else
737 if (x & 0xaaaaaaaa) r += 1;
738 if (x & 0xcccccccc) r += 2;
739 if (x & 0xf0f0f0f0) r += 4;
740 if (x & 0xff00ff00) r += 8;
741 if (x & 0xffff0000) r += 16;
742#endif
743
744 return r;
745 }
746
747 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
748 ecb_function_ int
749 ecb_ctz64 (uint64_t x)
750 {
751 int shift = x & 0xffffffffU ? 0 : 32;
752 return ecb_ctz32 (x >> shift) + shift;
753 }
754
755 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
756 ecb_function_ int
757 ecb_popcount32 (uint32_t x)
758 {
759 x -= (x >> 1) & 0x55555555;
760 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
761 x = ((x >> 4) + x) & 0x0f0f0f0f;
762 x *= 0x01010101;
763
764 return x >> 24;
765 }
766
767 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
768 ecb_function_ int ecb_ld32 (uint32_t x)
769 {
770 int r = 0;
771
772 if (x >> 16) { x >>= 16; r += 16; }
773 if (x >> 8) { x >>= 8; r += 8; }
774 if (x >> 4) { x >>= 4; r += 4; }
775 if (x >> 2) { x >>= 2; r += 2; }
776 if (x >> 1) { r += 1; }
777
778 return r;
779 }
780
781 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
782 ecb_function_ int ecb_ld64 (uint64_t x)
783 {
784 int r = 0;
785
786 if (x >> 32) { x >>= 32; r += 32; }
787
788 return r + ecb_ld32 (x);
789 }
790#endif
791
792ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
793ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
794{
795 return ( (x * 0x0802U & 0x22110U)
796 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
797}
798
799ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
800ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
801{
802 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
803 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
804 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
805 x = ( x >> 8 ) | ( x << 8);
806
807 return x;
808}
809
810ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
811ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
812{
813 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
814 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
815 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
816 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
817 x = ( x >> 16 ) | ( x << 16);
818
819 return x;
820}
821
822/* popcount64 is only available on 64 bit cpus as gcc builtin */
823/* so for this version we are lazy */
824ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
825ecb_function_ int
826ecb_popcount64 (uint64_t x)
827{
828 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
829}
830
831ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
832ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
833ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
834ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
835ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
836ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
837ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
838ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
839
840ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
841ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
842ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
843ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
844ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
845ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
846ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
847ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
848
849#if ECB_GCC_VERSION(4,3)
850 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
851 #define ecb_bswap32(x) __builtin_bswap32 (x)
852 #define ecb_bswap64(x) __builtin_bswap64 (x)
853#else
854 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
855 ecb_function_ uint16_t
856 ecb_bswap16 (uint16_t x)
857 {
858 return ecb_rotl16 (x, 8);
859 }
860
861 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
862 ecb_function_ uint32_t
863 ecb_bswap32 (uint32_t x)
864 {
865 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
866 }
867
868 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
869 ecb_function_ uint64_t
870 ecb_bswap64 (uint64_t x)
871 {
872 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
873 }
874#endif
875
876#if ECB_GCC_VERSION(4,5)
877 #define ecb_unreachable() __builtin_unreachable ()
878#else
879 /* this seems to work fine, but gcc always emits a warning for it :/ */
880 ecb_inline void ecb_unreachable (void) ecb_noreturn;
881 ecb_inline void ecb_unreachable (void) { }
882#endif
883
884/* try to tell the compiler that some condition is definitely true */
885#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
886
887ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
888ecb_inline unsigned char
889ecb_byteorder_helper (void)
890{
891 const uint32_t u = 0x11223344;
892 return *(unsigned char *)&u;
893}
894
895ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
896ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
897ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
898ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
899
900#if ECB_GCC_VERSION(3,0) || ECB_C99
901 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
902#else
903 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
904#endif
905
906#if __cplusplus
907 template<typename T>
908 static inline T ecb_div_rd (T val, T div)
909 {
910 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
911 }
912 template<typename T>
913 static inline T ecb_div_ru (T val, T div)
914 {
915 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
916 }
917#else
918 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
919 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
920#endif
921
922#if ecb_cplusplus_does_not_suck
923 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
924 template<typename T, int N>
925 static inline int ecb_array_length (const T (&arr)[N])
926 {
927 return N;
928 }
929#else
930 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
931#endif
932
933#endif
934
935/* ECB.H END */
936
937#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
938/* if your architecture doesn't need memory fences, e.g. because it is
939 * single-cpu/core, or if you use libev in a project that doesn't use libev
940 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
941 * libev, in which cases the memory fences become nops.
942 * alternatively, you can remove this #error and link against libpthread,
943 * which will then provide the memory fences.
944 */
945# error "memory fences not defined for your architecture, please report"
946#endif
947
948#ifndef ECB_MEMORY_FENCE
949# define ECB_MEMORY_FENCE do { } while (0)
950# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
951# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
952#endif
953
954#define expect_false(cond) ecb_expect_false (cond)
955#define expect_true(cond) ecb_expect_true (cond)
956#define noinline ecb_noinline
957
350#define inline_size static inline 958#define inline_size ecb_inline
351 959
352#if EV_MINIMAL 960#if EV_FEATURE_CODE
961# define inline_speed ecb_inline
962#else
353# define inline_speed static noinline 963# define inline_speed static noinline
964#endif
965
966#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
967
968#if EV_MINPRI == EV_MAXPRI
969# define ABSPRI(w) (((W)w), 0)
354#else 970#else
355# define inline_speed static inline
356#endif
357
358#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
359#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 971# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
972#endif
360 973
361#define EMPTY /* required for microsofts broken pseudo-c compiler */ 974#define EMPTY /* required for microsofts broken pseudo-c compiler */
362#define EMPTY2(a,b) /* used to suppress some warnings */ 975#define EMPTY2(a,b) /* used to suppress some warnings */
363 976
364typedef ev_watcher *W; 977typedef ev_watcher *W;
… …
366typedef ev_watcher_time *WT; 979typedef ev_watcher_time *WT;
367 980
368#define ev_active(w) ((W)(w))->active 981#define ev_active(w) ((W)(w))->active
369#define ev_at(w) ((WT)(w))->at 982#define ev_at(w) ((WT)(w))->at
370 983
984#if EV_USE_REALTIME
985/* sig_atomic_t is used to avoid per-thread variables or locking but still */
986/* giving it a reasonably high chance of working on typical architectures */
987static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
988#endif
989
371#if EV_USE_MONOTONIC 990#if EV_USE_MONOTONIC
372/* sig_atomic_t is used to avoid per-thread variables or locking but still */
373/* giving it a reasonably high chance of working on typical architetcures */
374static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 991static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
992#endif
993
994#ifndef EV_FD_TO_WIN32_HANDLE
995# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
996#endif
997#ifndef EV_WIN32_HANDLE_TO_FD
998# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
999#endif
1000#ifndef EV_WIN32_CLOSE_FD
1001# define EV_WIN32_CLOSE_FD(fd) close (fd)
375#endif 1002#endif
376 1003
377#ifdef _WIN32 1004#ifdef _WIN32
378# include "ev_win32.c" 1005# include "ev_win32.c"
379#endif 1006#endif
380 1007
381/*****************************************************************************/ 1008/*****************************************************************************/
382 1009
1010/* define a suitable floor function (only used by periodics atm) */
1011
1012#if EV_USE_FLOOR
1013# include <math.h>
1014# define ev_floor(v) floor (v)
1015#else
1016
1017#include <float.h>
1018
1019/* a floor() replacement function, should be independent of ev_tstamp type */
1020static ev_tstamp noinline
1021ev_floor (ev_tstamp v)
1022{
1023 /* the choice of shift factor is not terribly important */
1024#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1025 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1026#else
1027 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1028#endif
1029
1030 /* argument too large for an unsigned long? */
1031 if (expect_false (v >= shift))
1032 {
1033 ev_tstamp f;
1034
1035 if (v == v - 1.)
1036 return v; /* very large number */
1037
1038 f = shift * ev_floor (v * (1. / shift));
1039 return f + ev_floor (v - f);
1040 }
1041
1042 /* special treatment for negative args? */
1043 if (expect_false (v < 0.))
1044 {
1045 ev_tstamp f = -ev_floor (-v);
1046
1047 return f - (f == v ? 0 : 1);
1048 }
1049
1050 /* fits into an unsigned long */
1051 return (unsigned long)v;
1052}
1053
1054#endif
1055
1056/*****************************************************************************/
1057
1058#ifdef __linux
1059# include <sys/utsname.h>
1060#endif
1061
1062static unsigned int noinline ecb_cold
1063ev_linux_version (void)
1064{
1065#ifdef __linux
1066 unsigned int v = 0;
1067 struct utsname buf;
1068 int i;
1069 char *p = buf.release;
1070
1071 if (uname (&buf))
1072 return 0;
1073
1074 for (i = 3+1; --i; )
1075 {
1076 unsigned int c = 0;
1077
1078 for (;;)
1079 {
1080 if (*p >= '0' && *p <= '9')
1081 c = c * 10 + *p++ - '0';
1082 else
1083 {
1084 p += *p == '.';
1085 break;
1086 }
1087 }
1088
1089 v = (v << 8) | c;
1090 }
1091
1092 return v;
1093#else
1094 return 0;
1095#endif
1096}
1097
1098/*****************************************************************************/
1099
1100#if EV_AVOID_STDIO
1101static void noinline ecb_cold
1102ev_printerr (const char *msg)
1103{
1104 write (STDERR_FILENO, msg, strlen (msg));
1105}
1106#endif
1107
383static void (*syserr_cb)(const char *msg); 1108static void (*syserr_cb)(const char *msg);
384 1109
385void 1110void ecb_cold
386ev_set_syserr_cb (void (*cb)(const char *msg)) 1111ev_set_syserr_cb (void (*cb)(const char *msg))
387{ 1112{
388 syserr_cb = cb; 1113 syserr_cb = cb;
389} 1114}
390 1115
391static void noinline 1116static void noinline ecb_cold
392syserr (const char *msg) 1117ev_syserr (const char *msg)
393{ 1118{
394 if (!msg) 1119 if (!msg)
395 msg = "(libev) system error"; 1120 msg = "(libev) system error";
396 1121
397 if (syserr_cb) 1122 if (syserr_cb)
398 syserr_cb (msg); 1123 syserr_cb (msg);
399 else 1124 else
400 { 1125 {
1126#if EV_AVOID_STDIO
1127 ev_printerr (msg);
1128 ev_printerr (": ");
1129 ev_printerr (strerror (errno));
1130 ev_printerr ("\n");
1131#else
401 perror (msg); 1132 perror (msg);
1133#endif
402 abort (); 1134 abort ();
403 } 1135 }
404} 1136}
405 1137
406static void * 1138static void *
407ev_realloc_emul (void *ptr, long size) 1139ev_realloc_emul (void *ptr, long size)
408{ 1140{
1141#if __GLIBC__
1142 return realloc (ptr, size);
1143#else
409 /* some systems, notably openbsd and darwin, fail to properly 1144 /* some systems, notably openbsd and darwin, fail to properly
410 * implement realloc (x, 0) (as required by both ansi c-98 and 1145 * implement realloc (x, 0) (as required by both ansi c-89 and
411 * the single unix specification, so work around them here. 1146 * the single unix specification, so work around them here.
412 */ 1147 */
413 1148
414 if (size) 1149 if (size)
415 return realloc (ptr, size); 1150 return realloc (ptr, size);
416 1151
417 free (ptr); 1152 free (ptr);
418 return 0; 1153 return 0;
1154#endif
419} 1155}
420 1156
421static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1157static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
422 1158
423void 1159void ecb_cold
424ev_set_allocator (void *(*cb)(void *ptr, long size)) 1160ev_set_allocator (void *(*cb)(void *ptr, long size))
425{ 1161{
426 alloc = cb; 1162 alloc = cb;
427} 1163}
428 1164
… …
431{ 1167{
432 ptr = alloc (ptr, size); 1168 ptr = alloc (ptr, size);
433 1169
434 if (!ptr && size) 1170 if (!ptr && size)
435 { 1171 {
1172#if EV_AVOID_STDIO
1173 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1174#else
436 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1175 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1176#endif
437 abort (); 1177 abort ();
438 } 1178 }
439 1179
440 return ptr; 1180 return ptr;
441} 1181}
… …
443#define ev_malloc(size) ev_realloc (0, (size)) 1183#define ev_malloc(size) ev_realloc (0, (size))
444#define ev_free(ptr) ev_realloc ((ptr), 0) 1184#define ev_free(ptr) ev_realloc ((ptr), 0)
445 1185
446/*****************************************************************************/ 1186/*****************************************************************************/
447 1187
1188/* set in reify when reification needed */
1189#define EV_ANFD_REIFY 1
1190
1191/* file descriptor info structure */
448typedef struct 1192typedef struct
449{ 1193{
450 WL head; 1194 WL head;
451 unsigned char events; 1195 unsigned char events; /* the events watched for */
1196 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
1197 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
452 unsigned char reify; 1198 unsigned char unused;
1199#if EV_USE_EPOLL
1200 unsigned int egen; /* generation counter to counter epoll bugs */
1201#endif
453#if EV_SELECT_IS_WINSOCKET 1202#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
454 SOCKET handle; 1203 SOCKET handle;
455#endif 1204#endif
1205#if EV_USE_IOCP
1206 OVERLAPPED or, ow;
1207#endif
456} ANFD; 1208} ANFD;
457 1209
1210/* stores the pending event set for a given watcher */
458typedef struct 1211typedef struct
459{ 1212{
460 W w; 1213 W w;
461 int events; 1214 int events; /* the pending event set for the given watcher */
462} ANPENDING; 1215} ANPENDING;
463 1216
464#if EV_USE_INOTIFY 1217#if EV_USE_INOTIFY
465/* hash table entry per inotify-id */ 1218/* hash table entry per inotify-id */
466typedef struct 1219typedef struct
… …
469} ANFS; 1222} ANFS;
470#endif 1223#endif
471 1224
472/* Heap Entry */ 1225/* Heap Entry */
473#if EV_HEAP_CACHE_AT 1226#if EV_HEAP_CACHE_AT
1227 /* a heap element */
474 typedef struct { 1228 typedef struct {
475 ev_tstamp at; 1229 ev_tstamp at;
476 WT w; 1230 WT w;
477 } ANHE; 1231 } ANHE;
478 1232
479 #define ANHE_w(he) (he).w /* access watcher, read-write */ 1233 #define ANHE_w(he) (he).w /* access watcher, read-write */
480 #define ANHE_at(he) (he).at /* access cached at, read-only */ 1234 #define ANHE_at(he) (he).at /* access cached at, read-only */
481 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ 1235 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
482#else 1236#else
1237 /* a heap element */
483 typedef WT ANHE; 1238 typedef WT ANHE;
484 1239
485 #define ANHE_w(he) (he) 1240 #define ANHE_w(he) (he)
486 #define ANHE_at(he) (he)->at 1241 #define ANHE_at(he) (he)->at
487 #define ANHE_at_cache(he) 1242 #define ANHE_at_cache(he)
… …
498 #undef VAR 1253 #undef VAR
499 }; 1254 };
500 #include "ev_wrap.h" 1255 #include "ev_wrap.h"
501 1256
502 static struct ev_loop default_loop_struct; 1257 static struct ev_loop default_loop_struct;
503 struct ev_loop *ev_default_loop_ptr; 1258 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
504 1259
505#else 1260#else
506 1261
507 ev_tstamp ev_rt_now; 1262 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
508 #define VAR(name,decl) static decl; 1263 #define VAR(name,decl) static decl;
509 #include "ev_vars.h" 1264 #include "ev_vars.h"
510 #undef VAR 1265 #undef VAR
511 1266
512 static int ev_default_loop_ptr; 1267 static int ev_default_loop_ptr;
513 1268
514#endif 1269#endif
515 1270
1271#if EV_FEATURE_API
1272# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
1273# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
1274# define EV_INVOKE_PENDING invoke_cb (EV_A)
1275#else
1276# define EV_RELEASE_CB (void)0
1277# define EV_ACQUIRE_CB (void)0
1278# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
1279#endif
1280
1281#define EVBREAK_RECURSE 0x80
1282
516/*****************************************************************************/ 1283/*****************************************************************************/
517 1284
1285#ifndef EV_HAVE_EV_TIME
518ev_tstamp 1286ev_tstamp
519ev_time (void) 1287ev_time (void)
520{ 1288{
521#if EV_USE_REALTIME 1289#if EV_USE_REALTIME
1290 if (expect_true (have_realtime))
1291 {
522 struct timespec ts; 1292 struct timespec ts;
523 clock_gettime (CLOCK_REALTIME, &ts); 1293 clock_gettime (CLOCK_REALTIME, &ts);
524 return ts.tv_sec + ts.tv_nsec * 1e-9; 1294 return ts.tv_sec + ts.tv_nsec * 1e-9;
525#else 1295 }
1296#endif
1297
526 struct timeval tv; 1298 struct timeval tv;
527 gettimeofday (&tv, 0); 1299 gettimeofday (&tv, 0);
528 return tv.tv_sec + tv.tv_usec * 1e-6; 1300 return tv.tv_sec + tv.tv_usec * 1e-6;
529#endif
530} 1301}
1302#endif
531 1303
532ev_tstamp inline_size 1304inline_size ev_tstamp
533get_clock (void) 1305get_clock (void)
534{ 1306{
535#if EV_USE_MONOTONIC 1307#if EV_USE_MONOTONIC
536 if (expect_true (have_monotonic)) 1308 if (expect_true (have_monotonic))
537 { 1309 {
… …
558 if (delay > 0.) 1330 if (delay > 0.)
559 { 1331 {
560#if EV_USE_NANOSLEEP 1332#if EV_USE_NANOSLEEP
561 struct timespec ts; 1333 struct timespec ts;
562 1334
563 ts.tv_sec = (time_t)delay; 1335 EV_TS_SET (ts, delay);
564 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
565
566 nanosleep (&ts, 0); 1336 nanosleep (&ts, 0);
567#elif defined(_WIN32) 1337#elif defined _WIN32
568 Sleep ((unsigned long)(delay * 1e3)); 1338 Sleep ((unsigned long)(delay * 1e3));
569#else 1339#else
570 struct timeval tv; 1340 struct timeval tv;
571 1341
572 tv.tv_sec = (time_t)delay;
573 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
574
575 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1342 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
576 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 1343 /* something not guaranteed by newer posix versions, but guaranteed */
577 /* by older ones */ 1344 /* by older ones */
1345 EV_TV_SET (tv, delay);
578 select (0, 0, 0, 0, &tv); 1346 select (0, 0, 0, 0, &tv);
579#endif 1347#endif
580 } 1348 }
581} 1349}
582 1350
583/*****************************************************************************/ 1351/*****************************************************************************/
584 1352
585#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1353#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
586 1354
587int inline_size 1355/* find a suitable new size for the given array, */
1356/* hopefully by rounding to a nice-to-malloc size */
1357inline_size int
588array_nextsize (int elem, int cur, int cnt) 1358array_nextsize (int elem, int cur, int cnt)
589{ 1359{
590 int ncur = cur + 1; 1360 int ncur = cur + 1;
591 1361
592 do 1362 do
593 ncur <<= 1; 1363 ncur <<= 1;
594 while (cnt > ncur); 1364 while (cnt > ncur);
595 1365
596 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1366 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
597 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1367 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
598 { 1368 {
599 ncur *= elem; 1369 ncur *= elem;
600 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1370 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
601 ncur = ncur - sizeof (void *) * 4; 1371 ncur = ncur - sizeof (void *) * 4;
… …
603 } 1373 }
604 1374
605 return ncur; 1375 return ncur;
606} 1376}
607 1377
608static noinline void * 1378static void * noinline ecb_cold
609array_realloc (int elem, void *base, int *cur, int cnt) 1379array_realloc (int elem, void *base, int *cur, int cnt)
610{ 1380{
611 *cur = array_nextsize (elem, *cur, cnt); 1381 *cur = array_nextsize (elem, *cur, cnt);
612 return ev_realloc (base, elem * *cur); 1382 return ev_realloc (base, elem * *cur);
613} 1383}
1384
1385#define array_init_zero(base,count) \
1386 memset ((void *)(base), 0, sizeof (*(base)) * (count))
614 1387
615#define array_needsize(type,base,cur,cnt,init) \ 1388#define array_needsize(type,base,cur,cnt,init) \
616 if (expect_false ((cnt) > (cur))) \ 1389 if (expect_false ((cnt) > (cur))) \
617 { \ 1390 { \
618 int ocur_ = (cur); \ 1391 int ecb_unused ocur_ = (cur); \
619 (base) = (type *)array_realloc \ 1392 (base) = (type *)array_realloc \
620 (sizeof (type), (base), &(cur), (cnt)); \ 1393 (sizeof (type), (base), &(cur), (cnt)); \
621 init ((base) + (ocur_), (cur) - ocur_); \ 1394 init ((base) + (ocur_), (cur) - ocur_); \
622 } 1395 }
623 1396
… …
630 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 1403 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
631 } 1404 }
632#endif 1405#endif
633 1406
634#define array_free(stem, idx) \ 1407#define array_free(stem, idx) \
635 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 1408 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
636 1409
637/*****************************************************************************/ 1410/*****************************************************************************/
1411
1412/* dummy callback for pending events */
1413static void noinline
1414pendingcb (EV_P_ ev_prepare *w, int revents)
1415{
1416}
638 1417
639void noinline 1418void noinline
640ev_feed_event (EV_P_ void *w, int revents) 1419ev_feed_event (EV_P_ void *w, int revents)
641{ 1420{
642 W w_ = (W)w; 1421 W w_ = (W)w;
… …
651 pendings [pri][w_->pending - 1].w = w_; 1430 pendings [pri][w_->pending - 1].w = w_;
652 pendings [pri][w_->pending - 1].events = revents; 1431 pendings [pri][w_->pending - 1].events = revents;
653 } 1432 }
654} 1433}
655 1434
656void inline_speed 1435inline_speed void
1436feed_reverse (EV_P_ W w)
1437{
1438 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
1439 rfeeds [rfeedcnt++] = w;
1440}
1441
1442inline_size void
1443feed_reverse_done (EV_P_ int revents)
1444{
1445 do
1446 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
1447 while (rfeedcnt);
1448}
1449
1450inline_speed void
657queue_events (EV_P_ W *events, int eventcnt, int type) 1451queue_events (EV_P_ W *events, int eventcnt, int type)
658{ 1452{
659 int i; 1453 int i;
660 1454
661 for (i = 0; i < eventcnt; ++i) 1455 for (i = 0; i < eventcnt; ++i)
662 ev_feed_event (EV_A_ events [i], type); 1456 ev_feed_event (EV_A_ events [i], type);
663} 1457}
664 1458
665/*****************************************************************************/ 1459/*****************************************************************************/
666 1460
667void inline_size 1461inline_speed void
668anfds_init (ANFD *base, int count)
669{
670 while (count--)
671 {
672 base->head = 0;
673 base->events = EV_NONE;
674 base->reify = 0;
675
676 ++base;
677 }
678}
679
680void inline_speed
681fd_event (EV_P_ int fd, int revents) 1462fd_event_nocheck (EV_P_ int fd, int revents)
682{ 1463{
683 ANFD *anfd = anfds + fd; 1464 ANFD *anfd = anfds + fd;
684 ev_io *w; 1465 ev_io *w;
685 1466
686 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1467 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
690 if (ev) 1471 if (ev)
691 ev_feed_event (EV_A_ (W)w, ev); 1472 ev_feed_event (EV_A_ (W)w, ev);
692 } 1473 }
693} 1474}
694 1475
1476/* do not submit kernel events for fds that have reify set */
1477/* because that means they changed while we were polling for new events */
1478inline_speed void
1479fd_event (EV_P_ int fd, int revents)
1480{
1481 ANFD *anfd = anfds + fd;
1482
1483 if (expect_true (!anfd->reify))
1484 fd_event_nocheck (EV_A_ fd, revents);
1485}
1486
695void 1487void
696ev_feed_fd_event (EV_P_ int fd, int revents) 1488ev_feed_fd_event (EV_P_ int fd, int revents)
697{ 1489{
698 if (fd >= 0 && fd < anfdmax) 1490 if (fd >= 0 && fd < anfdmax)
699 fd_event (EV_A_ fd, revents); 1491 fd_event_nocheck (EV_A_ fd, revents);
700} 1492}
701 1493
702void inline_size 1494/* make sure the external fd watch events are in-sync */
1495/* with the kernel/libev internal state */
1496inline_size void
703fd_reify (EV_P) 1497fd_reify (EV_P)
704{ 1498{
705 int i; 1499 int i;
1500
1501#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1502 for (i = 0; i < fdchangecnt; ++i)
1503 {
1504 int fd = fdchanges [i];
1505 ANFD *anfd = anfds + fd;
1506
1507 if (anfd->reify & EV__IOFDSET && anfd->head)
1508 {
1509 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1510
1511 if (handle != anfd->handle)
1512 {
1513 unsigned long arg;
1514
1515 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1516
1517 /* handle changed, but fd didn't - we need to do it in two steps */
1518 backend_modify (EV_A_ fd, anfd->events, 0);
1519 anfd->events = 0;
1520 anfd->handle = handle;
1521 }
1522 }
1523 }
1524#endif
706 1525
707 for (i = 0; i < fdchangecnt; ++i) 1526 for (i = 0; i < fdchangecnt; ++i)
708 { 1527 {
709 int fd = fdchanges [i]; 1528 int fd = fdchanges [i];
710 ANFD *anfd = anfds + fd; 1529 ANFD *anfd = anfds + fd;
711 ev_io *w; 1530 ev_io *w;
712 1531
713 unsigned char events = 0; 1532 unsigned char o_events = anfd->events;
1533 unsigned char o_reify = anfd->reify;
714 1534
715 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1535 anfd->reify = 0;
716 events |= (unsigned char)w->events;
717 1536
718#if EV_SELECT_IS_WINSOCKET 1537 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
719 if (events)
720 { 1538 {
721 unsigned long arg; 1539 anfd->events = 0;
722 #ifdef EV_FD_TO_WIN32_HANDLE 1540
723 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1541 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
724 #else 1542 anfd->events |= (unsigned char)w->events;
725 anfd->handle = _get_osfhandle (fd); 1543
726 #endif 1544 if (o_events != anfd->events)
727 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1545 o_reify = EV__IOFDSET; /* actually |= */
728 } 1546 }
729#endif
730 1547
731 { 1548 if (o_reify & EV__IOFDSET)
732 unsigned char o_events = anfd->events;
733 unsigned char o_reify = anfd->reify;
734
735 anfd->reify = 0;
736 anfd->events = events;
737
738 if (o_events != events || o_reify & EV_IOFDSET)
739 backend_modify (EV_A_ fd, o_events, events); 1549 backend_modify (EV_A_ fd, o_events, anfd->events);
740 }
741 } 1550 }
742 1551
743 fdchangecnt = 0; 1552 fdchangecnt = 0;
744} 1553}
745 1554
746void inline_size 1555/* something about the given fd changed */
1556inline_size void
747fd_change (EV_P_ int fd, int flags) 1557fd_change (EV_P_ int fd, int flags)
748{ 1558{
749 unsigned char reify = anfds [fd].reify; 1559 unsigned char reify = anfds [fd].reify;
750 anfds [fd].reify |= flags; 1560 anfds [fd].reify |= flags;
751 1561
… …
755 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1565 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
756 fdchanges [fdchangecnt - 1] = fd; 1566 fdchanges [fdchangecnt - 1] = fd;
757 } 1567 }
758} 1568}
759 1569
760void inline_speed 1570/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1571inline_speed void ecb_cold
761fd_kill (EV_P_ int fd) 1572fd_kill (EV_P_ int fd)
762{ 1573{
763 ev_io *w; 1574 ev_io *w;
764 1575
765 while ((w = (ev_io *)anfds [fd].head)) 1576 while ((w = (ev_io *)anfds [fd].head))
… …
767 ev_io_stop (EV_A_ w); 1578 ev_io_stop (EV_A_ w);
768 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1579 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
769 } 1580 }
770} 1581}
771 1582
772int inline_size 1583/* check whether the given fd is actually valid, for error recovery */
1584inline_size int ecb_cold
773fd_valid (int fd) 1585fd_valid (int fd)
774{ 1586{
775#ifdef _WIN32 1587#ifdef _WIN32
776 return _get_osfhandle (fd) != -1; 1588 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
777#else 1589#else
778 return fcntl (fd, F_GETFD) != -1; 1590 return fcntl (fd, F_GETFD) != -1;
779#endif 1591#endif
780} 1592}
781 1593
782/* called on EBADF to verify fds */ 1594/* called on EBADF to verify fds */
783static void noinline 1595static void noinline ecb_cold
784fd_ebadf (EV_P) 1596fd_ebadf (EV_P)
785{ 1597{
786 int fd; 1598 int fd;
787 1599
788 for (fd = 0; fd < anfdmax; ++fd) 1600 for (fd = 0; fd < anfdmax; ++fd)
… …
790 if (!fd_valid (fd) && errno == EBADF) 1602 if (!fd_valid (fd) && errno == EBADF)
791 fd_kill (EV_A_ fd); 1603 fd_kill (EV_A_ fd);
792} 1604}
793 1605
794/* called on ENOMEM in select/poll to kill some fds and retry */ 1606/* called on ENOMEM in select/poll to kill some fds and retry */
795static void noinline 1607static void noinline ecb_cold
796fd_enomem (EV_P) 1608fd_enomem (EV_P)
797{ 1609{
798 int fd; 1610 int fd;
799 1611
800 for (fd = anfdmax; fd--; ) 1612 for (fd = anfdmax; fd--; )
801 if (anfds [fd].events) 1613 if (anfds [fd].events)
802 { 1614 {
803 fd_kill (EV_A_ fd); 1615 fd_kill (EV_A_ fd);
804 return; 1616 break;
805 } 1617 }
806} 1618}
807 1619
808/* usually called after fork if backend needs to re-arm all fds from scratch */ 1620/* usually called after fork if backend needs to re-arm all fds from scratch */
809static void noinline 1621static void noinline
… …
813 1625
814 for (fd = 0; fd < anfdmax; ++fd) 1626 for (fd = 0; fd < anfdmax; ++fd)
815 if (anfds [fd].events) 1627 if (anfds [fd].events)
816 { 1628 {
817 anfds [fd].events = 0; 1629 anfds [fd].events = 0;
1630 anfds [fd].emask = 0;
818 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1631 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
819 } 1632 }
820} 1633}
821 1634
1635/* used to prepare libev internal fd's */
1636/* this is not fork-safe */
1637inline_speed void
1638fd_intern (int fd)
1639{
1640#ifdef _WIN32
1641 unsigned long arg = 1;
1642 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1643#else
1644 fcntl (fd, F_SETFD, FD_CLOEXEC);
1645 fcntl (fd, F_SETFL, O_NONBLOCK);
1646#endif
1647}
1648
822/*****************************************************************************/ 1649/*****************************************************************************/
823 1650
824/* 1651/*
825 * the heap functions want a real array index. array index 0 uis guaranteed to not 1652 * the heap functions want a real array index. array index 0 is guaranteed to not
826 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1653 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
827 * the branching factor of the d-tree. 1654 * the branching factor of the d-tree.
828 */ 1655 */
829 1656
830/* 1657/*
… …
839#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1666#define HEAP0 (DHEAP - 1) /* index of first element in heap */
840#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 1667#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
841#define UPHEAP_DONE(p,k) ((p) == (k)) 1668#define UPHEAP_DONE(p,k) ((p) == (k))
842 1669
843/* away from the root */ 1670/* away from the root */
844void inline_speed 1671inline_speed void
845downheap (ANHE *heap, int N, int k) 1672downheap (ANHE *heap, int N, int k)
846{ 1673{
847 ANHE he = heap [k]; 1674 ANHE he = heap [k];
848 ANHE *E = heap + N + HEAP0; 1675 ANHE *E = heap + N + HEAP0;
849 1676
… …
889#define HEAP0 1 1716#define HEAP0 1
890#define HPARENT(k) ((k) >> 1) 1717#define HPARENT(k) ((k) >> 1)
891#define UPHEAP_DONE(p,k) (!(p)) 1718#define UPHEAP_DONE(p,k) (!(p))
892 1719
893/* away from the root */ 1720/* away from the root */
894void inline_speed 1721inline_speed void
895downheap (ANHE *heap, int N, int k) 1722downheap (ANHE *heap, int N, int k)
896{ 1723{
897 ANHE he = heap [k]; 1724 ANHE he = heap [k];
898 1725
899 for (;;) 1726 for (;;)
900 { 1727 {
901 int c = k << 1; 1728 int c = k << 1;
902 1729
903 if (c > N + HEAP0 - 1) 1730 if (c >= N + HEAP0)
904 break; 1731 break;
905 1732
906 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1733 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
907 ? 1 : 0; 1734 ? 1 : 0;
908 1735
… …
919 ev_active (ANHE_w (he)) = k; 1746 ev_active (ANHE_w (he)) = k;
920} 1747}
921#endif 1748#endif
922 1749
923/* towards the root */ 1750/* towards the root */
924void inline_speed 1751inline_speed void
925upheap (ANHE *heap, int k) 1752upheap (ANHE *heap, int k)
926{ 1753{
927 ANHE he = heap [k]; 1754 ANHE he = heap [k];
928 1755
929 for (;;) 1756 for (;;)
… …
940 1767
941 heap [k] = he; 1768 heap [k] = he;
942 ev_active (ANHE_w (he)) = k; 1769 ev_active (ANHE_w (he)) = k;
943} 1770}
944 1771
945void inline_size 1772/* move an element suitably so it is in a correct place */
1773inline_size void
946adjustheap (ANHE *heap, int N, int k) 1774adjustheap (ANHE *heap, int N, int k)
947{ 1775{
948 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1776 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
949 upheap (heap, k); 1777 upheap (heap, k);
950 else 1778 else
951 downheap (heap, N, k); 1779 downheap (heap, N, k);
952} 1780}
953 1781
954/* rebuild the heap: this function is used only once and executed rarely */ 1782/* rebuild the heap: this function is used only once and executed rarely */
955void inline_size 1783inline_size void
956reheap (ANHE *heap, int N) 1784reheap (ANHE *heap, int N)
957{ 1785{
958 int i; 1786 int i;
959 1787
960 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ 1788 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
… …
963 upheap (heap, i + HEAP0); 1791 upheap (heap, i + HEAP0);
964} 1792}
965 1793
966/*****************************************************************************/ 1794/*****************************************************************************/
967 1795
1796/* associate signal watchers to a signal signal */
968typedef struct 1797typedef struct
969{ 1798{
1799 EV_ATOMIC_T pending;
1800#if EV_MULTIPLICITY
1801 EV_P;
1802#endif
970 WL head; 1803 WL head;
971 EV_ATOMIC_T gotsig;
972} ANSIG; 1804} ANSIG;
973 1805
974static ANSIG *signals; 1806static ANSIG signals [EV_NSIG - 1];
975static int signalmax;
976
977static EV_ATOMIC_T gotsig;
978
979void inline_size
980signals_init (ANSIG *base, int count)
981{
982 while (count--)
983 {
984 base->head = 0;
985 base->gotsig = 0;
986
987 ++base;
988 }
989}
990 1807
991/*****************************************************************************/ 1808/*****************************************************************************/
992 1809
993void inline_speed 1810#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
994fd_intern (int fd)
995{
996#ifdef _WIN32
997 unsigned long arg = 1;
998 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
999#else
1000 fcntl (fd, F_SETFD, FD_CLOEXEC);
1001 fcntl (fd, F_SETFL, O_NONBLOCK);
1002#endif
1003}
1004 1811
1005static void noinline 1812static void noinline ecb_cold
1006evpipe_init (EV_P) 1813evpipe_init (EV_P)
1007{ 1814{
1008 if (!ev_is_active (&pipeev)) 1815 if (!ev_is_active (&pipe_w))
1009 { 1816 {
1010#if EV_USE_EVENTFD 1817# if EV_USE_EVENTFD
1818 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1819 if (evfd < 0 && errno == EINVAL)
1011 if ((evfd = eventfd (0, 0)) >= 0) 1820 evfd = eventfd (0, 0);
1821
1822 if (evfd >= 0)
1012 { 1823 {
1013 evpipe [0] = -1; 1824 evpipe [0] = -1;
1014 fd_intern (evfd); 1825 fd_intern (evfd); /* doing it twice doesn't hurt */
1015 ev_io_set (&pipeev, evfd, EV_READ); 1826 ev_io_set (&pipe_w, evfd, EV_READ);
1016 } 1827 }
1017 else 1828 else
1018#endif 1829# endif
1019 { 1830 {
1020 while (pipe (evpipe)) 1831 while (pipe (evpipe))
1021 syserr ("(libev) error creating signal/async pipe"); 1832 ev_syserr ("(libev) error creating signal/async pipe");
1022 1833
1023 fd_intern (evpipe [0]); 1834 fd_intern (evpipe [0]);
1024 fd_intern (evpipe [1]); 1835 fd_intern (evpipe [1]);
1025 ev_io_set (&pipeev, evpipe [0], EV_READ); 1836 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1026 } 1837 }
1027 1838
1028 ev_io_start (EV_A_ &pipeev); 1839 ev_io_start (EV_A_ &pipe_w);
1029 ev_unref (EV_A); /* watcher should not keep loop alive */ 1840 ev_unref (EV_A); /* watcher should not keep loop alive */
1030 } 1841 }
1031} 1842}
1032 1843
1033void inline_size 1844inline_speed void
1034evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1845evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1035{ 1846{
1036 if (!*flag) 1847 if (expect_true (*flag))
1848 return;
1849
1850 *flag = 1;
1851
1852 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1853
1854 pipe_write_skipped = 1;
1855
1856 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1857
1858 if (pipe_write_wanted)
1037 { 1859 {
1860 int old_errno;
1861
1862 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1863
1038 int old_errno = errno; /* save errno because write might clobber it */ 1864 old_errno = errno; /* save errno because write will clobber it */
1039
1040 *flag = 1;
1041 1865
1042#if EV_USE_EVENTFD 1866#if EV_USE_EVENTFD
1043 if (evfd >= 0) 1867 if (evfd >= 0)
1044 { 1868 {
1045 uint64_t counter = 1; 1869 uint64_t counter = 1;
1046 write (evfd, &counter, sizeof (uint64_t)); 1870 write (evfd, &counter, sizeof (uint64_t));
1047 } 1871 }
1048 else 1872 else
1049#endif 1873#endif
1874 {
1875 /* win32 people keep sending patches that change this write() to send() */
1876 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1877 /* so when you think this write should be a send instead, please find out */
1878 /* where your send() is from - it's definitely not the microsoft send, and */
1879 /* tell me. thank you. */
1880 /* it might be that your problem is that your environment needs EV_USE_WSASOCKET */
1881 /* check the ev documentation on how to use this flag */
1050 write (evpipe [1], &old_errno, 1); 1882 write (evpipe [1], &(evpipe [1]), 1);
1883 }
1051 1884
1052 errno = old_errno; 1885 errno = old_errno;
1053 } 1886 }
1054} 1887}
1055 1888
1889/* called whenever the libev signal pipe */
1890/* got some events (signal, async) */
1056static void 1891static void
1057pipecb (EV_P_ ev_io *iow, int revents) 1892pipecb (EV_P_ ev_io *iow, int revents)
1058{ 1893{
1894 int i;
1895
1896 if (revents & EV_READ)
1897 {
1059#if EV_USE_EVENTFD 1898#if EV_USE_EVENTFD
1060 if (evfd >= 0) 1899 if (evfd >= 0)
1061 { 1900 {
1062 uint64_t counter; 1901 uint64_t counter;
1063 read (evfd, &counter, sizeof (uint64_t)); 1902 read (evfd, &counter, sizeof (uint64_t));
1064 } 1903 }
1065 else 1904 else
1066#endif 1905#endif
1067 { 1906 {
1068 char dummy; 1907 char dummy;
1908 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1069 read (evpipe [0], &dummy, 1); 1909 read (evpipe [0], &dummy, 1);
1910 }
1911 }
1912
1913 pipe_write_skipped = 0;
1914
1915#if EV_SIGNAL_ENABLE
1916 if (sig_pending)
1070 } 1917 {
1918 sig_pending = 0;
1071 1919
1072 if (gotsig && ev_is_default_loop (EV_A)) 1920 for (i = EV_NSIG - 1; i--; )
1073 { 1921 if (expect_false (signals [i].pending))
1074 int signum;
1075 gotsig = 0;
1076
1077 for (signum = signalmax; signum--; )
1078 if (signals [signum].gotsig)
1079 ev_feed_signal_event (EV_A_ signum + 1); 1922 ev_feed_signal_event (EV_A_ i + 1);
1080 } 1923 }
1924#endif
1081 1925
1082#if EV_ASYNC_ENABLE 1926#if EV_ASYNC_ENABLE
1083 if (gotasync) 1927 if (async_pending)
1084 { 1928 {
1085 int i; 1929 async_pending = 0;
1086 gotasync = 0;
1087 1930
1088 for (i = asynccnt; i--; ) 1931 for (i = asynccnt; i--; )
1089 if (asyncs [i]->sent) 1932 if (asyncs [i]->sent)
1090 { 1933 {
1091 asyncs [i]->sent = 0; 1934 asyncs [i]->sent = 0;
… …
1095#endif 1938#endif
1096} 1939}
1097 1940
1098/*****************************************************************************/ 1941/*****************************************************************************/
1099 1942
1943void
1944ev_feed_signal (int signum)
1945{
1946#if EV_MULTIPLICITY
1947 EV_P = signals [signum - 1].loop;
1948
1949 if (!EV_A)
1950 return;
1951#endif
1952
1953 if (!ev_active (&pipe_w))
1954 return;
1955
1956 signals [signum - 1].pending = 1;
1957 evpipe_write (EV_A_ &sig_pending);
1958}
1959
1100static void 1960static void
1101ev_sighandler (int signum) 1961ev_sighandler (int signum)
1102{ 1962{
1103#if EV_MULTIPLICITY
1104 struct ev_loop *loop = &default_loop_struct;
1105#endif
1106
1107#if _WIN32 1963#ifdef _WIN32
1108 signal (signum, ev_sighandler); 1964 signal (signum, ev_sighandler);
1109#endif 1965#endif
1110 1966
1111 signals [signum - 1].gotsig = 1; 1967 ev_feed_signal (signum);
1112 evpipe_write (EV_A_ &gotsig);
1113} 1968}
1114 1969
1115void noinline 1970void noinline
1116ev_feed_signal_event (EV_P_ int signum) 1971ev_feed_signal_event (EV_P_ int signum)
1117{ 1972{
1118 WL w; 1973 WL w;
1119 1974
1975 if (expect_false (signum <= 0 || signum > EV_NSIG))
1976 return;
1977
1978 --signum;
1979
1120#if EV_MULTIPLICITY 1980#if EV_MULTIPLICITY
1121 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1981 /* it is permissible to try to feed a signal to the wrong loop */
1122#endif 1982 /* or, likely more useful, feeding a signal nobody is waiting for */
1123 1983
1124 --signum; 1984 if (expect_false (signals [signum].loop != EV_A))
1125
1126 if (signum < 0 || signum >= signalmax)
1127 return; 1985 return;
1986#endif
1128 1987
1129 signals [signum].gotsig = 0; 1988 signals [signum].pending = 0;
1130 1989
1131 for (w = signals [signum].head; w; w = w->next) 1990 for (w = signals [signum].head; w; w = w->next)
1132 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1991 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1133} 1992}
1134 1993
1994#if EV_USE_SIGNALFD
1995static void
1996sigfdcb (EV_P_ ev_io *iow, int revents)
1997{
1998 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1999
2000 for (;;)
2001 {
2002 ssize_t res = read (sigfd, si, sizeof (si));
2003
2004 /* not ISO-C, as res might be -1, but works with SuS */
2005 for (sip = si; (char *)sip < (char *)si + res; ++sip)
2006 ev_feed_signal_event (EV_A_ sip->ssi_signo);
2007
2008 if (res < (ssize_t)sizeof (si))
2009 break;
2010 }
2011}
2012#endif
2013
2014#endif
2015
1135/*****************************************************************************/ 2016/*****************************************************************************/
1136 2017
2018#if EV_CHILD_ENABLE
1137static WL childs [EV_PID_HASHSIZE]; 2019static WL childs [EV_PID_HASHSIZE];
1138
1139#ifndef _WIN32
1140 2020
1141static ev_signal childev; 2021static ev_signal childev;
1142 2022
1143#ifndef WIFCONTINUED 2023#ifndef WIFCONTINUED
1144# define WIFCONTINUED(status) 0 2024# define WIFCONTINUED(status) 0
1145#endif 2025#endif
1146 2026
1147void inline_speed 2027/* handle a single child status event */
2028inline_speed void
1148child_reap (EV_P_ int chain, int pid, int status) 2029child_reap (EV_P_ int chain, int pid, int status)
1149{ 2030{
1150 ev_child *w; 2031 ev_child *w;
1151 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2032 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1152 2033
1153 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2034 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1154 { 2035 {
1155 if ((w->pid == pid || !w->pid) 2036 if ((w->pid == pid || !w->pid)
1156 && (!traced || (w->flags & 1))) 2037 && (!traced || (w->flags & 1)))
1157 { 2038 {
1158 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2039 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1165 2046
1166#ifndef WCONTINUED 2047#ifndef WCONTINUED
1167# define WCONTINUED 0 2048# define WCONTINUED 0
1168#endif 2049#endif
1169 2050
2051/* called on sigchld etc., calls waitpid */
1170static void 2052static void
1171childcb (EV_P_ ev_signal *sw, int revents) 2053childcb (EV_P_ ev_signal *sw, int revents)
1172{ 2054{
1173 int pid, status; 2055 int pid, status;
1174 2056
… …
1182 /* make sure we are called again until all children have been reaped */ 2064 /* make sure we are called again until all children have been reaped */
1183 /* we need to do it this way so that the callback gets called before we continue */ 2065 /* we need to do it this way so that the callback gets called before we continue */
1184 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2066 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1185 2067
1186 child_reap (EV_A_ pid, pid, status); 2068 child_reap (EV_A_ pid, pid, status);
1187 if (EV_PID_HASHSIZE > 1) 2069 if ((EV_PID_HASHSIZE) > 1)
1188 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2070 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1189} 2071}
1190 2072
1191#endif 2073#endif
1192 2074
1193/*****************************************************************************/ 2075/*****************************************************************************/
1194 2076
2077#if EV_USE_IOCP
2078# include "ev_iocp.c"
2079#endif
1195#if EV_USE_PORT 2080#if EV_USE_PORT
1196# include "ev_port.c" 2081# include "ev_port.c"
1197#endif 2082#endif
1198#if EV_USE_KQUEUE 2083#if EV_USE_KQUEUE
1199# include "ev_kqueue.c" 2084# include "ev_kqueue.c"
… …
1206#endif 2091#endif
1207#if EV_USE_SELECT 2092#if EV_USE_SELECT
1208# include "ev_select.c" 2093# include "ev_select.c"
1209#endif 2094#endif
1210 2095
1211int 2096int ecb_cold
1212ev_version_major (void) 2097ev_version_major (void)
1213{ 2098{
1214 return EV_VERSION_MAJOR; 2099 return EV_VERSION_MAJOR;
1215} 2100}
1216 2101
1217int 2102int ecb_cold
1218ev_version_minor (void) 2103ev_version_minor (void)
1219{ 2104{
1220 return EV_VERSION_MINOR; 2105 return EV_VERSION_MINOR;
1221} 2106}
1222 2107
1223/* return true if we are running with elevated privileges and should ignore env variables */ 2108/* return true if we are running with elevated privileges and should ignore env variables */
1224int inline_size 2109int inline_size ecb_cold
1225enable_secure (void) 2110enable_secure (void)
1226{ 2111{
1227#ifdef _WIN32 2112#ifdef _WIN32
1228 return 0; 2113 return 0;
1229#else 2114#else
1230 return getuid () != geteuid () 2115 return getuid () != geteuid ()
1231 || getgid () != getegid (); 2116 || getgid () != getegid ();
1232#endif 2117#endif
1233} 2118}
1234 2119
1235unsigned int 2120unsigned int ecb_cold
1236ev_supported_backends (void) 2121ev_supported_backends (void)
1237{ 2122{
1238 unsigned int flags = 0; 2123 unsigned int flags = 0;
1239 2124
1240 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2125 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1244 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2129 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1245 2130
1246 return flags; 2131 return flags;
1247} 2132}
1248 2133
1249unsigned int 2134unsigned int ecb_cold
1250ev_recommended_backends (void) 2135ev_recommended_backends (void)
1251{ 2136{
1252 unsigned int flags = ev_supported_backends (); 2137 unsigned int flags = ev_supported_backends ();
1253 2138
1254#ifndef __NetBSD__ 2139#ifndef __NetBSD__
1255 /* kqueue is borked on everything but netbsd apparently */ 2140 /* kqueue is borked on everything but netbsd apparently */
1256 /* it usually doesn't work correctly on anything but sockets and pipes */ 2141 /* it usually doesn't work correctly on anything but sockets and pipes */
1257 flags &= ~EVBACKEND_KQUEUE; 2142 flags &= ~EVBACKEND_KQUEUE;
1258#endif 2143#endif
1259#ifdef __APPLE__ 2144#ifdef __APPLE__
1260 // flags &= ~EVBACKEND_KQUEUE; for documentation 2145 /* only select works correctly on that "unix-certified" platform */
1261 flags &= ~EVBACKEND_POLL; 2146 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
2147 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
2148#endif
2149#ifdef __FreeBSD__
2150 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1262#endif 2151#endif
1263 2152
1264 return flags; 2153 return flags;
1265} 2154}
1266 2155
1267unsigned int 2156unsigned int ecb_cold
1268ev_embeddable_backends (void) 2157ev_embeddable_backends (void)
1269{ 2158{
1270 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2159 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1271 2160
1272 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2161 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1273 /* please fix it and tell me how to detect the fix */ 2162 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1274 flags &= ~EVBACKEND_EPOLL; 2163 flags &= ~EVBACKEND_EPOLL;
1275 2164
1276 return flags; 2165 return flags;
1277} 2166}
1278 2167
1279unsigned int 2168unsigned int
1280ev_backend (EV_P) 2169ev_backend (EV_P)
1281{ 2170{
1282 return backend; 2171 return backend;
1283} 2172}
1284 2173
2174#if EV_FEATURE_API
1285unsigned int 2175unsigned int
1286ev_loop_count (EV_P) 2176ev_iteration (EV_P)
1287{ 2177{
1288 return loop_count; 2178 return loop_count;
2179}
2180
2181unsigned int
2182ev_depth (EV_P)
2183{
2184 return loop_depth;
1289} 2185}
1290 2186
1291void 2187void
1292ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2188ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1293{ 2189{
… …
1298ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2194ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1299{ 2195{
1300 timeout_blocktime = interval; 2196 timeout_blocktime = interval;
1301} 2197}
1302 2198
2199void
2200ev_set_userdata (EV_P_ void *data)
2201{
2202 userdata = data;
2203}
2204
2205void *
2206ev_userdata (EV_P)
2207{
2208 return userdata;
2209}
2210
2211void
2212ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
2213{
2214 invoke_cb = invoke_pending_cb;
2215}
2216
2217void
2218ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
2219{
2220 release_cb = release;
2221 acquire_cb = acquire;
2222}
2223#endif
2224
2225/* initialise a loop structure, must be zero-initialised */
1303static void noinline 2226static void noinline ecb_cold
1304loop_init (EV_P_ unsigned int flags) 2227loop_init (EV_P_ unsigned int flags)
1305{ 2228{
1306 if (!backend) 2229 if (!backend)
1307 { 2230 {
2231 origflags = flags;
2232
2233#if EV_USE_REALTIME
2234 if (!have_realtime)
2235 {
2236 struct timespec ts;
2237
2238 if (!clock_gettime (CLOCK_REALTIME, &ts))
2239 have_realtime = 1;
2240 }
2241#endif
2242
1308#if EV_USE_MONOTONIC 2243#if EV_USE_MONOTONIC
2244 if (!have_monotonic)
1309 { 2245 {
1310 struct timespec ts; 2246 struct timespec ts;
2247
1311 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2248 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1312 have_monotonic = 1; 2249 have_monotonic = 1;
1313 } 2250 }
1314#endif
1315
1316 ev_rt_now = ev_time ();
1317 mn_now = get_clock ();
1318 now_floor = mn_now;
1319 rtmn_diff = ev_rt_now - mn_now;
1320
1321 io_blocktime = 0.;
1322 timeout_blocktime = 0.;
1323 backend = 0;
1324 backend_fd = -1;
1325 gotasync = 0;
1326#if EV_USE_INOTIFY
1327 fs_fd = -2;
1328#endif 2251#endif
1329 2252
1330 /* pid check not overridable via env */ 2253 /* pid check not overridable via env */
1331#ifndef _WIN32 2254#ifndef _WIN32
1332 if (flags & EVFLAG_FORKCHECK) 2255 if (flags & EVFLAG_FORKCHECK)
… …
1336 if (!(flags & EVFLAG_NOENV) 2259 if (!(flags & EVFLAG_NOENV)
1337 && !enable_secure () 2260 && !enable_secure ()
1338 && getenv ("LIBEV_FLAGS")) 2261 && getenv ("LIBEV_FLAGS"))
1339 flags = atoi (getenv ("LIBEV_FLAGS")); 2262 flags = atoi (getenv ("LIBEV_FLAGS"));
1340 2263
1341 if (!(flags & 0x0000ffffU)) 2264 ev_rt_now = ev_time ();
2265 mn_now = get_clock ();
2266 now_floor = mn_now;
2267 rtmn_diff = ev_rt_now - mn_now;
2268#if EV_FEATURE_API
2269 invoke_cb = ev_invoke_pending;
2270#endif
2271
2272 io_blocktime = 0.;
2273 timeout_blocktime = 0.;
2274 backend = 0;
2275 backend_fd = -1;
2276 sig_pending = 0;
2277#if EV_ASYNC_ENABLE
2278 async_pending = 0;
2279#endif
2280 pipe_write_skipped = 0;
2281 pipe_write_wanted = 0;
2282#if EV_USE_INOTIFY
2283 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2284#endif
2285#if EV_USE_SIGNALFD
2286 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2287#endif
2288
2289 if (!(flags & EVBACKEND_MASK))
1342 flags |= ev_recommended_backends (); 2290 flags |= ev_recommended_backends ();
1343 2291
2292#if EV_USE_IOCP
2293 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2294#endif
1344#if EV_USE_PORT 2295#if EV_USE_PORT
1345 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2296 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1346#endif 2297#endif
1347#if EV_USE_KQUEUE 2298#if EV_USE_KQUEUE
1348 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2299 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1355#endif 2306#endif
1356#if EV_USE_SELECT 2307#if EV_USE_SELECT
1357 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2308 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1358#endif 2309#endif
1359 2310
2311 ev_prepare_init (&pending_w, pendingcb);
2312
2313#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1360 ev_init (&pipeev, pipecb); 2314 ev_init (&pipe_w, pipecb);
1361 ev_set_priority (&pipeev, EV_MAXPRI); 2315 ev_set_priority (&pipe_w, EV_MAXPRI);
2316#endif
1362 } 2317 }
1363} 2318}
1364 2319
1365static void noinline 2320/* free up a loop structure */
2321void ecb_cold
1366loop_destroy (EV_P) 2322ev_loop_destroy (EV_P)
1367{ 2323{
1368 int i; 2324 int i;
1369 2325
2326#if EV_MULTIPLICITY
2327 /* mimic free (0) */
2328 if (!EV_A)
2329 return;
2330#endif
2331
2332#if EV_CLEANUP_ENABLE
2333 /* queue cleanup watchers (and execute them) */
2334 if (expect_false (cleanupcnt))
2335 {
2336 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2337 EV_INVOKE_PENDING;
2338 }
2339#endif
2340
2341#if EV_CHILD_ENABLE
2342 if (ev_is_active (&childev))
2343 {
2344 ev_ref (EV_A); /* child watcher */
2345 ev_signal_stop (EV_A_ &childev);
2346 }
2347#endif
2348
1370 if (ev_is_active (&pipeev)) 2349 if (ev_is_active (&pipe_w))
1371 { 2350 {
1372 ev_ref (EV_A); /* signal watcher */ 2351 /*ev_ref (EV_A);*/
1373 ev_io_stop (EV_A_ &pipeev); 2352 /*ev_io_stop (EV_A_ &pipe_w);*/
1374 2353
1375#if EV_USE_EVENTFD 2354#if EV_USE_EVENTFD
1376 if (evfd >= 0) 2355 if (evfd >= 0)
1377 close (evfd); 2356 close (evfd);
1378#endif 2357#endif
1379 2358
1380 if (evpipe [0] >= 0) 2359 if (evpipe [0] >= 0)
1381 { 2360 {
1382 close (evpipe [0]); 2361 EV_WIN32_CLOSE_FD (evpipe [0]);
1383 close (evpipe [1]); 2362 EV_WIN32_CLOSE_FD (evpipe [1]);
1384 } 2363 }
1385 } 2364 }
2365
2366#if EV_USE_SIGNALFD
2367 if (ev_is_active (&sigfd_w))
2368 close (sigfd);
2369#endif
1386 2370
1387#if EV_USE_INOTIFY 2371#if EV_USE_INOTIFY
1388 if (fs_fd >= 0) 2372 if (fs_fd >= 0)
1389 close (fs_fd); 2373 close (fs_fd);
1390#endif 2374#endif
1391 2375
1392 if (backend_fd >= 0) 2376 if (backend_fd >= 0)
1393 close (backend_fd); 2377 close (backend_fd);
1394 2378
2379#if EV_USE_IOCP
2380 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2381#endif
1395#if EV_USE_PORT 2382#if EV_USE_PORT
1396 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2383 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1397#endif 2384#endif
1398#if EV_USE_KQUEUE 2385#if EV_USE_KQUEUE
1399 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2386 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1414#if EV_IDLE_ENABLE 2401#if EV_IDLE_ENABLE
1415 array_free (idle, [i]); 2402 array_free (idle, [i]);
1416#endif 2403#endif
1417 } 2404 }
1418 2405
1419 ev_free (anfds); anfdmax = 0; 2406 ev_free (anfds); anfds = 0; anfdmax = 0;
1420 2407
1421 /* have to use the microsoft-never-gets-it-right macro */ 2408 /* have to use the microsoft-never-gets-it-right macro */
2409 array_free (rfeed, EMPTY);
1422 array_free (fdchange, EMPTY); 2410 array_free (fdchange, EMPTY);
1423 array_free (timer, EMPTY); 2411 array_free (timer, EMPTY);
1424#if EV_PERIODIC_ENABLE 2412#if EV_PERIODIC_ENABLE
1425 array_free (periodic, EMPTY); 2413 array_free (periodic, EMPTY);
1426#endif 2414#endif
1427#if EV_FORK_ENABLE 2415#if EV_FORK_ENABLE
1428 array_free (fork, EMPTY); 2416 array_free (fork, EMPTY);
1429#endif 2417#endif
2418#if EV_CLEANUP_ENABLE
2419 array_free (cleanup, EMPTY);
2420#endif
1430 array_free (prepare, EMPTY); 2421 array_free (prepare, EMPTY);
1431 array_free (check, EMPTY); 2422 array_free (check, EMPTY);
1432#if EV_ASYNC_ENABLE 2423#if EV_ASYNC_ENABLE
1433 array_free (async, EMPTY); 2424 array_free (async, EMPTY);
1434#endif 2425#endif
1435 2426
1436 backend = 0; 2427 backend = 0;
2428
2429#if EV_MULTIPLICITY
2430 if (ev_is_default_loop (EV_A))
2431#endif
2432 ev_default_loop_ptr = 0;
2433#if EV_MULTIPLICITY
2434 else
2435 ev_free (EV_A);
2436#endif
1437} 2437}
1438 2438
1439#if EV_USE_INOTIFY 2439#if EV_USE_INOTIFY
1440void inline_size infy_fork (EV_P); 2440inline_size void infy_fork (EV_P);
1441#endif 2441#endif
1442 2442
1443void inline_size 2443inline_size void
1444loop_fork (EV_P) 2444loop_fork (EV_P)
1445{ 2445{
1446#if EV_USE_PORT 2446#if EV_USE_PORT
1447 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 2447 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1448#endif 2448#endif
… …
1454#endif 2454#endif
1455#if EV_USE_INOTIFY 2455#if EV_USE_INOTIFY
1456 infy_fork (EV_A); 2456 infy_fork (EV_A);
1457#endif 2457#endif
1458 2458
1459 if (ev_is_active (&pipeev)) 2459 if (ev_is_active (&pipe_w))
1460 { 2460 {
1461 /* this "locks" the handlers against writing to the pipe */ 2461 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1462 /* while we modify the fd vars */
1463 gotsig = 1;
1464#if EV_ASYNC_ENABLE
1465 gotasync = 1;
1466#endif
1467 2462
1468 ev_ref (EV_A); 2463 ev_ref (EV_A);
1469 ev_io_stop (EV_A_ &pipeev); 2464 ev_io_stop (EV_A_ &pipe_w);
1470 2465
1471#if EV_USE_EVENTFD 2466#if EV_USE_EVENTFD
1472 if (evfd >= 0) 2467 if (evfd >= 0)
1473 close (evfd); 2468 close (evfd);
1474#endif 2469#endif
1475 2470
1476 if (evpipe [0] >= 0) 2471 if (evpipe [0] >= 0)
1477 { 2472 {
1478 close (evpipe [0]); 2473 EV_WIN32_CLOSE_FD (evpipe [0]);
1479 close (evpipe [1]); 2474 EV_WIN32_CLOSE_FD (evpipe [1]);
1480 } 2475 }
1481 2476
2477#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1482 evpipe_init (EV_A); 2478 evpipe_init (EV_A);
1483 /* now iterate over everything, in case we missed something */ 2479 /* now iterate over everything, in case we missed something */
1484 pipecb (EV_A_ &pipeev, EV_READ); 2480 pipecb (EV_A_ &pipe_w, EV_READ);
2481#endif
1485 } 2482 }
1486 2483
1487 postfork = 0; 2484 postfork = 0;
1488} 2485}
1489 2486
1490#if EV_MULTIPLICITY 2487#if EV_MULTIPLICITY
1491 2488
1492struct ev_loop * 2489struct ev_loop * ecb_cold
1493ev_loop_new (unsigned int flags) 2490ev_loop_new (unsigned int flags)
1494{ 2491{
1495 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2492 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1496 2493
1497 memset (loop, 0, sizeof (struct ev_loop)); 2494 memset (EV_A, 0, sizeof (struct ev_loop));
1498
1499 loop_init (EV_A_ flags); 2495 loop_init (EV_A_ flags);
1500 2496
1501 if (ev_backend (EV_A)) 2497 if (ev_backend (EV_A))
1502 return loop; 2498 return EV_A;
1503 2499
2500 ev_free (EV_A);
1504 return 0; 2501 return 0;
1505} 2502}
1506 2503
1507void 2504#endif /* multiplicity */
1508ev_loop_destroy (EV_P)
1509{
1510 loop_destroy (EV_A);
1511 ev_free (loop);
1512}
1513
1514void
1515ev_loop_fork (EV_P)
1516{
1517 postfork = 1; /* must be in line with ev_default_fork */
1518}
1519 2505
1520#if EV_VERIFY 2506#if EV_VERIFY
1521static void noinline 2507static void noinline ecb_cold
1522verify_watcher (EV_P_ W w) 2508verify_watcher (EV_P_ W w)
1523{ 2509{
1524 assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2510 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1525 2511
1526 if (w->pending) 2512 if (w->pending)
1527 assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2513 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1528} 2514}
1529 2515
1530static void noinline 2516static void noinline ecb_cold
1531verify_heap (EV_P_ ANHE *heap, int N) 2517verify_heap (EV_P_ ANHE *heap, int N)
1532{ 2518{
1533 int i; 2519 int i;
1534 2520
1535 for (i = HEAP0; i < N + HEAP0; ++i) 2521 for (i = HEAP0; i < N + HEAP0; ++i)
1536 { 2522 {
1537 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); 2523 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1538 assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i]))); 2524 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1539 assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i])))); 2525 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1540 2526
1541 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2527 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1542 } 2528 }
1543} 2529}
1544 2530
1545static void noinline 2531static void noinline ecb_cold
1546array_verify (EV_P_ W *ws, int cnt) 2532array_verify (EV_P_ W *ws, int cnt)
1547{ 2533{
1548 while (cnt--) 2534 while (cnt--)
1549 { 2535 {
1550 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2536 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1551 verify_watcher (EV_A_ ws [cnt]); 2537 verify_watcher (EV_A_ ws [cnt]);
1552 } 2538 }
1553} 2539}
1554#endif 2540#endif
1555 2541
1556void 2542#if EV_FEATURE_API
2543void ecb_cold
1557ev_loop_verify (EV_P) 2544ev_verify (EV_P)
1558{ 2545{
1559#if EV_VERIFY 2546#if EV_VERIFY
1560 int i; 2547 int i;
1561 WL w; 2548 WL w;
1562 2549
1563 assert (activecnt >= -1); 2550 assert (activecnt >= -1);
1564 2551
1565 assert (fdchangemax >= fdchangecnt); 2552 assert (fdchangemax >= fdchangecnt);
1566 for (i = 0; i < fdchangecnt; ++i) 2553 for (i = 0; i < fdchangecnt; ++i)
1567 assert (("negative fd in fdchanges", fdchanges [i] >= 0)); 2554 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1568 2555
1569 assert (anfdmax >= 0); 2556 assert (anfdmax >= 0);
1570 for (i = 0; i < anfdmax; ++i) 2557 for (i = 0; i < anfdmax; ++i)
1571 for (w = anfds [i].head; w; w = w->next) 2558 for (w = anfds [i].head; w; w = w->next)
1572 { 2559 {
1573 verify_watcher (EV_A_ (W)w); 2560 verify_watcher (EV_A_ (W)w);
1574 assert (("inactive fd watcher on anfd list", ev_active (w) == 1)); 2561 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1575 assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2562 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1576 } 2563 }
1577 2564
1578 assert (timermax >= timercnt); 2565 assert (timermax >= timercnt);
1579 verify_heap (EV_A_ timers, timercnt); 2566 verify_heap (EV_A_ timers, timercnt);
1580 2567
… …
1596#if EV_FORK_ENABLE 2583#if EV_FORK_ENABLE
1597 assert (forkmax >= forkcnt); 2584 assert (forkmax >= forkcnt);
1598 array_verify (EV_A_ (W *)forks, forkcnt); 2585 array_verify (EV_A_ (W *)forks, forkcnt);
1599#endif 2586#endif
1600 2587
2588#if EV_CLEANUP_ENABLE
2589 assert (cleanupmax >= cleanupcnt);
2590 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2591#endif
2592
1601#if EV_ASYNC_ENABLE 2593#if EV_ASYNC_ENABLE
1602 assert (asyncmax >= asynccnt); 2594 assert (asyncmax >= asynccnt);
1603 array_verify (EV_A_ (W *)asyncs, asynccnt); 2595 array_verify (EV_A_ (W *)asyncs, asynccnt);
1604#endif 2596#endif
1605 2597
2598#if EV_PREPARE_ENABLE
1606 assert (preparemax >= preparecnt); 2599 assert (preparemax >= preparecnt);
1607 array_verify (EV_A_ (W *)prepares, preparecnt); 2600 array_verify (EV_A_ (W *)prepares, preparecnt);
2601#endif
1608 2602
2603#if EV_CHECK_ENABLE
1609 assert (checkmax >= checkcnt); 2604 assert (checkmax >= checkcnt);
1610 array_verify (EV_A_ (W *)checks, checkcnt); 2605 array_verify (EV_A_ (W *)checks, checkcnt);
2606#endif
1611 2607
1612# if 0 2608# if 0
2609#if EV_CHILD_ENABLE
1613 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2610 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1614 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2611 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2612#endif
1615# endif 2613# endif
1616#endif 2614#endif
1617} 2615}
1618 2616#endif
1619#endif /* multiplicity */
1620 2617
1621#if EV_MULTIPLICITY 2618#if EV_MULTIPLICITY
1622struct ev_loop * 2619struct ev_loop * ecb_cold
1623ev_default_loop_init (unsigned int flags)
1624#else 2620#else
1625int 2621int
2622#endif
1626ev_default_loop (unsigned int flags) 2623ev_default_loop (unsigned int flags)
1627#endif
1628{ 2624{
1629 if (!ev_default_loop_ptr) 2625 if (!ev_default_loop_ptr)
1630 { 2626 {
1631#if EV_MULTIPLICITY 2627#if EV_MULTIPLICITY
1632 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2628 EV_P = ev_default_loop_ptr = &default_loop_struct;
1633#else 2629#else
1634 ev_default_loop_ptr = 1; 2630 ev_default_loop_ptr = 1;
1635#endif 2631#endif
1636 2632
1637 loop_init (EV_A_ flags); 2633 loop_init (EV_A_ flags);
1638 2634
1639 if (ev_backend (EV_A)) 2635 if (ev_backend (EV_A))
1640 { 2636 {
1641#ifndef _WIN32 2637#if EV_CHILD_ENABLE
1642 ev_signal_init (&childev, childcb, SIGCHLD); 2638 ev_signal_init (&childev, childcb, SIGCHLD);
1643 ev_set_priority (&childev, EV_MAXPRI); 2639 ev_set_priority (&childev, EV_MAXPRI);
1644 ev_signal_start (EV_A_ &childev); 2640 ev_signal_start (EV_A_ &childev);
1645 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2641 ev_unref (EV_A); /* child watcher should not keep loop alive */
1646#endif 2642#endif
… …
1651 2647
1652 return ev_default_loop_ptr; 2648 return ev_default_loop_ptr;
1653} 2649}
1654 2650
1655void 2651void
1656ev_default_destroy (void) 2652ev_loop_fork (EV_P)
1657{ 2653{
1658#if EV_MULTIPLICITY
1659 struct ev_loop *loop = ev_default_loop_ptr;
1660#endif
1661
1662#ifndef _WIN32
1663 ev_ref (EV_A); /* child watcher */
1664 ev_signal_stop (EV_A_ &childev);
1665#endif
1666
1667 loop_destroy (EV_A);
1668}
1669
1670void
1671ev_default_fork (void)
1672{
1673#if EV_MULTIPLICITY
1674 struct ev_loop *loop = ev_default_loop_ptr;
1675#endif
1676
1677 if (backend)
1678 postfork = 1; /* must be in line with ev_loop_fork */ 2654 postfork = 1; /* must be in line with ev_default_fork */
1679} 2655}
1680 2656
1681/*****************************************************************************/ 2657/*****************************************************************************/
1682 2658
1683void 2659void
1684ev_invoke (EV_P_ void *w, int revents) 2660ev_invoke (EV_P_ void *w, int revents)
1685{ 2661{
1686 EV_CB_INVOKE ((W)w, revents); 2662 EV_CB_INVOKE ((W)w, revents);
1687} 2663}
1688 2664
1689void inline_speed 2665unsigned int
1690call_pending (EV_P) 2666ev_pending_count (EV_P)
2667{
2668 int pri;
2669 unsigned int count = 0;
2670
2671 for (pri = NUMPRI; pri--; )
2672 count += pendingcnt [pri];
2673
2674 return count;
2675}
2676
2677void noinline
2678ev_invoke_pending (EV_P)
1691{ 2679{
1692 int pri; 2680 int pri;
1693 2681
1694 for (pri = NUMPRI; pri--; ) 2682 for (pri = NUMPRI; pri--; )
1695 while (pendingcnt [pri]) 2683 while (pendingcnt [pri])
1696 { 2684 {
1697 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2685 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1698 2686
1699 if (expect_true (p->w))
1700 {
1701 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1702
1703 p->w->pending = 0; 2687 p->w->pending = 0;
1704 EV_CB_INVOKE (p->w, p->events); 2688 EV_CB_INVOKE (p->w, p->events);
1705 EV_FREQUENT_CHECK; 2689 EV_FREQUENT_CHECK;
1706 }
1707 } 2690 }
1708} 2691}
1709 2692
1710#if EV_IDLE_ENABLE 2693#if EV_IDLE_ENABLE
1711void inline_size 2694/* make idle watchers pending. this handles the "call-idle */
2695/* only when higher priorities are idle" logic */
2696inline_size void
1712idle_reify (EV_P) 2697idle_reify (EV_P)
1713{ 2698{
1714 if (expect_false (idleall)) 2699 if (expect_false (idleall))
1715 { 2700 {
1716 int pri; 2701 int pri;
… …
1728 } 2713 }
1729 } 2714 }
1730} 2715}
1731#endif 2716#endif
1732 2717
1733void inline_size 2718/* make timers pending */
2719inline_size void
1734timers_reify (EV_P) 2720timers_reify (EV_P)
1735{ 2721{
1736 EV_FREQUENT_CHECK; 2722 EV_FREQUENT_CHECK;
1737 2723
1738 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 2724 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1739 { 2725 {
1740 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2726 do
1741
1742 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1743
1744 /* first reschedule or stop timer */
1745 if (w->repeat)
1746 { 2727 {
2728 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2729
2730 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2731
2732 /* first reschedule or stop timer */
2733 if (w->repeat)
2734 {
1747 ev_at (w) += w->repeat; 2735 ev_at (w) += w->repeat;
1748 if (ev_at (w) < mn_now) 2736 if (ev_at (w) < mn_now)
1749 ev_at (w) = mn_now; 2737 ev_at (w) = mn_now;
1750 2738
1751 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2739 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1752 2740
1753 ANHE_at_cache (timers [HEAP0]); 2741 ANHE_at_cache (timers [HEAP0]);
1754 downheap (timers, timercnt, HEAP0); 2742 downheap (timers, timercnt, HEAP0);
2743 }
2744 else
2745 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2746
2747 EV_FREQUENT_CHECK;
2748 feed_reverse (EV_A_ (W)w);
1755 } 2749 }
1756 else 2750 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1757 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1758 2751
1759 EV_FREQUENT_CHECK; 2752 feed_reverse_done (EV_A_ EV_TIMER);
1760 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1761 } 2753 }
1762} 2754}
1763 2755
1764#if EV_PERIODIC_ENABLE 2756#if EV_PERIODIC_ENABLE
1765void inline_size 2757
2758static void noinline
2759periodic_recalc (EV_P_ ev_periodic *w)
2760{
2761 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2762 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2763
2764 /* the above almost always errs on the low side */
2765 while (at <= ev_rt_now)
2766 {
2767 ev_tstamp nat = at + w->interval;
2768
2769 /* when resolution fails us, we use ev_rt_now */
2770 if (expect_false (nat == at))
2771 {
2772 at = ev_rt_now;
2773 break;
2774 }
2775
2776 at = nat;
2777 }
2778
2779 ev_at (w) = at;
2780}
2781
2782/* make periodics pending */
2783inline_size void
1766periodics_reify (EV_P) 2784periodics_reify (EV_P)
1767{ 2785{
1768 EV_FREQUENT_CHECK; 2786 EV_FREQUENT_CHECK;
1769 2787
1770 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2788 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1771 { 2789 {
1772 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2790 int feed_count = 0;
1773 2791
1774 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2792 do
1775
1776 /* first reschedule or stop timer */
1777 if (w->reschedule_cb)
1778 { 2793 {
2794 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2795
2796 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2797
2798 /* first reschedule or stop timer */
2799 if (w->reschedule_cb)
2800 {
1779 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2801 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1780 2802
1781 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); 2803 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1782 2804
1783 ANHE_at_cache (periodics [HEAP0]); 2805 ANHE_at_cache (periodics [HEAP0]);
1784 downheap (periodics, periodiccnt, HEAP0); 2806 downheap (periodics, periodiccnt, HEAP0);
2807 }
2808 else if (w->interval)
2809 {
2810 periodic_recalc (EV_A_ w);
2811 ANHE_at_cache (periodics [HEAP0]);
2812 downheap (periodics, periodiccnt, HEAP0);
2813 }
2814 else
2815 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2816
2817 EV_FREQUENT_CHECK;
2818 feed_reverse (EV_A_ (W)w);
1785 } 2819 }
1786 else if (w->interval) 2820 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1787 {
1788 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1789 /* if next trigger time is not sufficiently in the future, put it there */
1790 /* this might happen because of floating point inexactness */
1791 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1792 {
1793 ev_at (w) += w->interval;
1794 2821
1795 /* if interval is unreasonably low we might still have a time in the past */
1796 /* so correct this. this will make the periodic very inexact, but the user */
1797 /* has effectively asked to get triggered more often than possible */
1798 if (ev_at (w) < ev_rt_now)
1799 ev_at (w) = ev_rt_now;
1800 }
1801
1802 ANHE_at_cache (periodics [HEAP0]);
1803 downheap (periodics, periodiccnt, HEAP0);
1804 }
1805 else
1806 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1807
1808 EV_FREQUENT_CHECK;
1809 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2822 feed_reverse_done (EV_A_ EV_PERIODIC);
1810 } 2823 }
1811} 2824}
1812 2825
2826/* simply recalculate all periodics */
2827/* TODO: maybe ensure that at least one event happens when jumping forward? */
1813static void noinline 2828static void noinline ecb_cold
1814periodics_reschedule (EV_P) 2829periodics_reschedule (EV_P)
1815{ 2830{
1816 int i; 2831 int i;
1817 2832
1818 /* adjust periodics after time jump */ 2833 /* adjust periodics after time jump */
… …
1821 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2836 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1822 2837
1823 if (w->reschedule_cb) 2838 if (w->reschedule_cb)
1824 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2839 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1825 else if (w->interval) 2840 else if (w->interval)
1826 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2841 periodic_recalc (EV_A_ w);
1827 2842
1828 ANHE_at_cache (periodics [i]); 2843 ANHE_at_cache (periodics [i]);
1829 } 2844 }
1830 2845
1831 reheap (periodics, periodiccnt); 2846 reheap (periodics, periodiccnt);
1832} 2847}
1833#endif 2848#endif
1834 2849
1835void inline_speed 2850/* adjust all timers by a given offset */
2851static void noinline ecb_cold
2852timers_reschedule (EV_P_ ev_tstamp adjust)
2853{
2854 int i;
2855
2856 for (i = 0; i < timercnt; ++i)
2857 {
2858 ANHE *he = timers + i + HEAP0;
2859 ANHE_w (*he)->at += adjust;
2860 ANHE_at_cache (*he);
2861 }
2862}
2863
2864/* fetch new monotonic and realtime times from the kernel */
2865/* also detect if there was a timejump, and act accordingly */
2866inline_speed void
1836time_update (EV_P_ ev_tstamp max_block) 2867time_update (EV_P_ ev_tstamp max_block)
1837{ 2868{
1838 int i;
1839
1840#if EV_USE_MONOTONIC 2869#if EV_USE_MONOTONIC
1841 if (expect_true (have_monotonic)) 2870 if (expect_true (have_monotonic))
1842 { 2871 {
2872 int i;
1843 ev_tstamp odiff = rtmn_diff; 2873 ev_tstamp odiff = rtmn_diff;
1844 2874
1845 mn_now = get_clock (); 2875 mn_now = get_clock ();
1846 2876
1847 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2877 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1863 * doesn't hurt either as we only do this on time-jumps or 2893 * doesn't hurt either as we only do this on time-jumps or
1864 * in the unlikely event of having been preempted here. 2894 * in the unlikely event of having been preempted here.
1865 */ 2895 */
1866 for (i = 4; --i; ) 2896 for (i = 4; --i; )
1867 { 2897 {
2898 ev_tstamp diff;
1868 rtmn_diff = ev_rt_now - mn_now; 2899 rtmn_diff = ev_rt_now - mn_now;
1869 2900
2901 diff = odiff - rtmn_diff;
2902
1870 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2903 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1871 return; /* all is well */ 2904 return; /* all is well */
1872 2905
1873 ev_rt_now = ev_time (); 2906 ev_rt_now = ev_time ();
1874 mn_now = get_clock (); 2907 mn_now = get_clock ();
1875 now_floor = mn_now; 2908 now_floor = mn_now;
1876 } 2909 }
1877 2910
2911 /* no timer adjustment, as the monotonic clock doesn't jump */
2912 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1878# if EV_PERIODIC_ENABLE 2913# if EV_PERIODIC_ENABLE
1879 periodics_reschedule (EV_A); 2914 periodics_reschedule (EV_A);
1880# endif 2915# endif
1881 /* no timer adjustment, as the monotonic clock doesn't jump */
1882 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1883 } 2916 }
1884 else 2917 else
1885#endif 2918#endif
1886 { 2919 {
1887 ev_rt_now = ev_time (); 2920 ev_rt_now = ev_time ();
1888 2921
1889 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2922 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1890 { 2923 {
2924 /* adjust timers. this is easy, as the offset is the same for all of them */
2925 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1891#if EV_PERIODIC_ENABLE 2926#if EV_PERIODIC_ENABLE
1892 periodics_reschedule (EV_A); 2927 periodics_reschedule (EV_A);
1893#endif 2928#endif
1894 /* adjust timers. this is easy, as the offset is the same for all of them */
1895 for (i = 0; i < timercnt; ++i)
1896 {
1897 ANHE *he = timers + i + HEAP0;
1898 ANHE_w (*he)->at += ev_rt_now - mn_now;
1899 ANHE_at_cache (*he);
1900 }
1901 } 2929 }
1902 2930
1903 mn_now = ev_rt_now; 2931 mn_now = ev_rt_now;
1904 } 2932 }
1905} 2933}
1906 2934
1907void 2935int
1908ev_ref (EV_P)
1909{
1910 ++activecnt;
1911}
1912
1913void
1914ev_unref (EV_P)
1915{
1916 --activecnt;
1917}
1918
1919void
1920ev_now_update (EV_P)
1921{
1922 time_update (EV_A_ 1e100);
1923}
1924
1925static int loop_done;
1926
1927void
1928ev_loop (EV_P_ int flags) 2936ev_run (EV_P_ int flags)
1929{ 2937{
2938#if EV_FEATURE_API
2939 ++loop_depth;
2940#endif
2941
2942 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2943
1930 loop_done = EVUNLOOP_CANCEL; 2944 loop_done = EVBREAK_CANCEL;
1931 2945
1932 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2946 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1933 2947
1934 do 2948 do
1935 { 2949 {
1936#if EV_VERIFY >= 2 2950#if EV_VERIFY >= 2
1937 ev_loop_verify (EV_A); 2951 ev_verify (EV_A);
1938#endif 2952#endif
1939 2953
1940#ifndef _WIN32 2954#ifndef _WIN32
1941 if (expect_false (curpid)) /* penalise the forking check even more */ 2955 if (expect_false (curpid)) /* penalise the forking check even more */
1942 if (expect_false (getpid () != curpid)) 2956 if (expect_false (getpid () != curpid))
… …
1950 /* we might have forked, so queue fork handlers */ 2964 /* we might have forked, so queue fork handlers */
1951 if (expect_false (postfork)) 2965 if (expect_false (postfork))
1952 if (forkcnt) 2966 if (forkcnt)
1953 { 2967 {
1954 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2968 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1955 call_pending (EV_A); 2969 EV_INVOKE_PENDING;
1956 } 2970 }
1957#endif 2971#endif
1958 2972
2973#if EV_PREPARE_ENABLE
1959 /* queue prepare watchers (and execute them) */ 2974 /* queue prepare watchers (and execute them) */
1960 if (expect_false (preparecnt)) 2975 if (expect_false (preparecnt))
1961 { 2976 {
1962 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2977 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1963 call_pending (EV_A); 2978 EV_INVOKE_PENDING;
1964 } 2979 }
2980#endif
1965 2981
1966 if (expect_false (!activecnt)) 2982 if (expect_false (loop_done))
1967 break; 2983 break;
1968 2984
1969 /* we might have forked, so reify kernel state if necessary */ 2985 /* we might have forked, so reify kernel state if necessary */
1970 if (expect_false (postfork)) 2986 if (expect_false (postfork))
1971 loop_fork (EV_A); 2987 loop_fork (EV_A);
… …
1976 /* calculate blocking time */ 2992 /* calculate blocking time */
1977 { 2993 {
1978 ev_tstamp waittime = 0.; 2994 ev_tstamp waittime = 0.;
1979 ev_tstamp sleeptime = 0.; 2995 ev_tstamp sleeptime = 0.;
1980 2996
2997 /* remember old timestamp for io_blocktime calculation */
2998 ev_tstamp prev_mn_now = mn_now;
2999
3000 /* update time to cancel out callback processing overhead */
3001 time_update (EV_A_ 1e100);
3002
3003 /* from now on, we want a pipe-wake-up */
3004 pipe_write_wanted = 1;
3005
3006 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3007
1981 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3008 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
1982 { 3009 {
1983 /* update time to cancel out callback processing overhead */
1984 time_update (EV_A_ 1e100);
1985
1986 waittime = MAX_BLOCKTIME; 3010 waittime = MAX_BLOCKTIME;
1987 3011
1988 if (timercnt) 3012 if (timercnt)
1989 { 3013 {
1990 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3014 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
1991 if (waittime > to) waittime = to; 3015 if (waittime > to) waittime = to;
1992 } 3016 }
1993 3017
1994#if EV_PERIODIC_ENABLE 3018#if EV_PERIODIC_ENABLE
1995 if (periodiccnt) 3019 if (periodiccnt)
1996 { 3020 {
1997 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3021 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
1998 if (waittime > to) waittime = to; 3022 if (waittime > to) waittime = to;
1999 } 3023 }
2000#endif 3024#endif
2001 3025
3026 /* don't let timeouts decrease the waittime below timeout_blocktime */
2002 if (expect_false (waittime < timeout_blocktime)) 3027 if (expect_false (waittime < timeout_blocktime))
2003 waittime = timeout_blocktime; 3028 waittime = timeout_blocktime;
2004 3029
2005 sleeptime = waittime - backend_fudge; 3030 /* at this point, we NEED to wait, so we have to ensure */
3031 /* to pass a minimum nonzero value to the backend */
3032 if (expect_false (waittime < backend_mintime))
3033 waittime = backend_mintime;
2006 3034
3035 /* extra check because io_blocktime is commonly 0 */
2007 if (expect_true (sleeptime > io_blocktime)) 3036 if (expect_false (io_blocktime))
2008 sleeptime = io_blocktime;
2009
2010 if (sleeptime)
2011 { 3037 {
3038 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3039
3040 if (sleeptime > waittime - backend_mintime)
3041 sleeptime = waittime - backend_mintime;
3042
3043 if (expect_true (sleeptime > 0.))
3044 {
2012 ev_sleep (sleeptime); 3045 ev_sleep (sleeptime);
2013 waittime -= sleeptime; 3046 waittime -= sleeptime;
3047 }
2014 } 3048 }
2015 } 3049 }
2016 3050
3051#if EV_FEATURE_API
2017 ++loop_count; 3052 ++loop_count;
3053#endif
3054 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2018 backend_poll (EV_A_ waittime); 3055 backend_poll (EV_A_ waittime);
3056 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3057
3058 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3059
3060 if (pipe_write_skipped)
3061 {
3062 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3063 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3064 }
3065
2019 3066
2020 /* update ev_rt_now, do magic */ 3067 /* update ev_rt_now, do magic */
2021 time_update (EV_A_ waittime + sleeptime); 3068 time_update (EV_A_ waittime + sleeptime);
2022 } 3069 }
2023 3070
… …
2030#if EV_IDLE_ENABLE 3077#if EV_IDLE_ENABLE
2031 /* queue idle watchers unless other events are pending */ 3078 /* queue idle watchers unless other events are pending */
2032 idle_reify (EV_A); 3079 idle_reify (EV_A);
2033#endif 3080#endif
2034 3081
3082#if EV_CHECK_ENABLE
2035 /* queue check watchers, to be executed first */ 3083 /* queue check watchers, to be executed first */
2036 if (expect_false (checkcnt)) 3084 if (expect_false (checkcnt))
2037 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3085 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3086#endif
2038 3087
2039 call_pending (EV_A); 3088 EV_INVOKE_PENDING;
2040 } 3089 }
2041 while (expect_true ( 3090 while (expect_true (
2042 activecnt 3091 activecnt
2043 && !loop_done 3092 && !loop_done
2044 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3093 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2045 )); 3094 ));
2046 3095
2047 if (loop_done == EVUNLOOP_ONE) 3096 if (loop_done == EVBREAK_ONE)
2048 loop_done = EVUNLOOP_CANCEL; 3097 loop_done = EVBREAK_CANCEL;
3098
3099#if EV_FEATURE_API
3100 --loop_depth;
3101#endif
3102
3103 return activecnt;
2049} 3104}
2050 3105
2051void 3106void
2052ev_unloop (EV_P_ int how) 3107ev_break (EV_P_ int how)
2053{ 3108{
2054 loop_done = how; 3109 loop_done = how;
2055} 3110}
2056 3111
3112void
3113ev_ref (EV_P)
3114{
3115 ++activecnt;
3116}
3117
3118void
3119ev_unref (EV_P)
3120{
3121 --activecnt;
3122}
3123
3124void
3125ev_now_update (EV_P)
3126{
3127 time_update (EV_A_ 1e100);
3128}
3129
3130void
3131ev_suspend (EV_P)
3132{
3133 ev_now_update (EV_A);
3134}
3135
3136void
3137ev_resume (EV_P)
3138{
3139 ev_tstamp mn_prev = mn_now;
3140
3141 ev_now_update (EV_A);
3142 timers_reschedule (EV_A_ mn_now - mn_prev);
3143#if EV_PERIODIC_ENABLE
3144 /* TODO: really do this? */
3145 periodics_reschedule (EV_A);
3146#endif
3147}
3148
2057/*****************************************************************************/ 3149/*****************************************************************************/
3150/* singly-linked list management, used when the expected list length is short */
2058 3151
2059void inline_size 3152inline_size void
2060wlist_add (WL *head, WL elem) 3153wlist_add (WL *head, WL elem)
2061{ 3154{
2062 elem->next = *head; 3155 elem->next = *head;
2063 *head = elem; 3156 *head = elem;
2064} 3157}
2065 3158
2066void inline_size 3159inline_size void
2067wlist_del (WL *head, WL elem) 3160wlist_del (WL *head, WL elem)
2068{ 3161{
2069 while (*head) 3162 while (*head)
2070 { 3163 {
2071 if (*head == elem) 3164 if (expect_true (*head == elem))
2072 { 3165 {
2073 *head = elem->next; 3166 *head = elem->next;
2074 return; 3167 break;
2075 } 3168 }
2076 3169
2077 head = &(*head)->next; 3170 head = &(*head)->next;
2078 } 3171 }
2079} 3172}
2080 3173
2081void inline_speed 3174/* internal, faster, version of ev_clear_pending */
3175inline_speed void
2082clear_pending (EV_P_ W w) 3176clear_pending (EV_P_ W w)
2083{ 3177{
2084 if (w->pending) 3178 if (w->pending)
2085 { 3179 {
2086 pendings [ABSPRI (w)][w->pending - 1].w = 0; 3180 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2087 w->pending = 0; 3181 w->pending = 0;
2088 } 3182 }
2089} 3183}
2090 3184
2091int 3185int
… …
2095 int pending = w_->pending; 3189 int pending = w_->pending;
2096 3190
2097 if (expect_true (pending)) 3191 if (expect_true (pending))
2098 { 3192 {
2099 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 3193 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3194 p->w = (W)&pending_w;
2100 w_->pending = 0; 3195 w_->pending = 0;
2101 p->w = 0;
2102 return p->events; 3196 return p->events;
2103 } 3197 }
2104 else 3198 else
2105 return 0; 3199 return 0;
2106} 3200}
2107 3201
2108void inline_size 3202inline_size void
2109pri_adjust (EV_P_ W w) 3203pri_adjust (EV_P_ W w)
2110{ 3204{
2111 int pri = w->priority; 3205 int pri = ev_priority (w);
2112 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 3206 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2113 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 3207 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2114 w->priority = pri; 3208 ev_set_priority (w, pri);
2115} 3209}
2116 3210
2117void inline_speed 3211inline_speed void
2118ev_start (EV_P_ W w, int active) 3212ev_start (EV_P_ W w, int active)
2119{ 3213{
2120 pri_adjust (EV_A_ w); 3214 pri_adjust (EV_A_ w);
2121 w->active = active; 3215 w->active = active;
2122 ev_ref (EV_A); 3216 ev_ref (EV_A);
2123} 3217}
2124 3218
2125void inline_size 3219inline_size void
2126ev_stop (EV_P_ W w) 3220ev_stop (EV_P_ W w)
2127{ 3221{
2128 ev_unref (EV_A); 3222 ev_unref (EV_A);
2129 w->active = 0; 3223 w->active = 0;
2130} 3224}
… …
2137 int fd = w->fd; 3231 int fd = w->fd;
2138 3232
2139 if (expect_false (ev_is_active (w))) 3233 if (expect_false (ev_is_active (w)))
2140 return; 3234 return;
2141 3235
2142 assert (("ev_io_start called with negative fd", fd >= 0)); 3236 assert (("libev: ev_io_start called with negative fd", fd >= 0));
3237 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2143 3238
2144 EV_FREQUENT_CHECK; 3239 EV_FREQUENT_CHECK;
2145 3240
2146 ev_start (EV_A_ (W)w, 1); 3241 ev_start (EV_A_ (W)w, 1);
2147 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 3242 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2148 wlist_add (&anfds[fd].head, (WL)w); 3243 wlist_add (&anfds[fd].head, (WL)w);
2149 3244
2150 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 3245 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2151 w->events &= ~EV_IOFDSET; 3246 w->events &= ~EV__IOFDSET;
2152 3247
2153 EV_FREQUENT_CHECK; 3248 EV_FREQUENT_CHECK;
2154} 3249}
2155 3250
2156void noinline 3251void noinline
… …
2158{ 3253{
2159 clear_pending (EV_A_ (W)w); 3254 clear_pending (EV_A_ (W)w);
2160 if (expect_false (!ev_is_active (w))) 3255 if (expect_false (!ev_is_active (w)))
2161 return; 3256 return;
2162 3257
2163 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 3258 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2164 3259
2165 EV_FREQUENT_CHECK; 3260 EV_FREQUENT_CHECK;
2166 3261
2167 wlist_del (&anfds[w->fd].head, (WL)w); 3262 wlist_del (&anfds[w->fd].head, (WL)w);
2168 ev_stop (EV_A_ (W)w); 3263 ev_stop (EV_A_ (W)w);
2169 3264
2170 fd_change (EV_A_ w->fd, 1); 3265 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2171 3266
2172 EV_FREQUENT_CHECK; 3267 EV_FREQUENT_CHECK;
2173} 3268}
2174 3269
2175void noinline 3270void noinline
… …
2178 if (expect_false (ev_is_active (w))) 3273 if (expect_false (ev_is_active (w)))
2179 return; 3274 return;
2180 3275
2181 ev_at (w) += mn_now; 3276 ev_at (w) += mn_now;
2182 3277
2183 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 3278 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2184 3279
2185 EV_FREQUENT_CHECK; 3280 EV_FREQUENT_CHECK;
2186 3281
2187 ++timercnt; 3282 ++timercnt;
2188 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 3283 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
… …
2191 ANHE_at_cache (timers [ev_active (w)]); 3286 ANHE_at_cache (timers [ev_active (w)]);
2192 upheap (timers, ev_active (w)); 3287 upheap (timers, ev_active (w));
2193 3288
2194 EV_FREQUENT_CHECK; 3289 EV_FREQUENT_CHECK;
2195 3290
2196 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3291 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2197} 3292}
2198 3293
2199void noinline 3294void noinline
2200ev_timer_stop (EV_P_ ev_timer *w) 3295ev_timer_stop (EV_P_ ev_timer *w)
2201{ 3296{
… …
2206 EV_FREQUENT_CHECK; 3301 EV_FREQUENT_CHECK;
2207 3302
2208 { 3303 {
2209 int active = ev_active (w); 3304 int active = ev_active (w);
2210 3305
2211 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 3306 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2212 3307
2213 --timercnt; 3308 --timercnt;
2214 3309
2215 if (expect_true (active < timercnt + HEAP0)) 3310 if (expect_true (active < timercnt + HEAP0))
2216 { 3311 {
2217 timers [active] = timers [timercnt + HEAP0]; 3312 timers [active] = timers [timercnt + HEAP0];
2218 adjustheap (timers, timercnt, active); 3313 adjustheap (timers, timercnt, active);
2219 } 3314 }
2220 } 3315 }
2221 3316
2222 EV_FREQUENT_CHECK;
2223
2224 ev_at (w) -= mn_now; 3317 ev_at (w) -= mn_now;
2225 3318
2226 ev_stop (EV_A_ (W)w); 3319 ev_stop (EV_A_ (W)w);
3320
3321 EV_FREQUENT_CHECK;
2227} 3322}
2228 3323
2229void noinline 3324void noinline
2230ev_timer_again (EV_P_ ev_timer *w) 3325ev_timer_again (EV_P_ ev_timer *w)
2231{ 3326{
2232 EV_FREQUENT_CHECK; 3327 EV_FREQUENT_CHECK;
3328
3329 clear_pending (EV_A_ (W)w);
2233 3330
2234 if (ev_is_active (w)) 3331 if (ev_is_active (w))
2235 { 3332 {
2236 if (w->repeat) 3333 if (w->repeat)
2237 { 3334 {
… …
2249 } 3346 }
2250 3347
2251 EV_FREQUENT_CHECK; 3348 EV_FREQUENT_CHECK;
2252} 3349}
2253 3350
3351ev_tstamp
3352ev_timer_remaining (EV_P_ ev_timer *w)
3353{
3354 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3355}
3356
2254#if EV_PERIODIC_ENABLE 3357#if EV_PERIODIC_ENABLE
2255void noinline 3358void noinline
2256ev_periodic_start (EV_P_ ev_periodic *w) 3359ev_periodic_start (EV_P_ ev_periodic *w)
2257{ 3360{
2258 if (expect_false (ev_is_active (w))) 3361 if (expect_false (ev_is_active (w)))
… …
2260 3363
2261 if (w->reschedule_cb) 3364 if (w->reschedule_cb)
2262 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3365 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2263 else if (w->interval) 3366 else if (w->interval)
2264 { 3367 {
2265 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 3368 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2266 /* this formula differs from the one in periodic_reify because we do not always round up */ 3369 periodic_recalc (EV_A_ w);
2267 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2268 } 3370 }
2269 else 3371 else
2270 ev_at (w) = w->offset; 3372 ev_at (w) = w->offset;
2271 3373
2272 EV_FREQUENT_CHECK; 3374 EV_FREQUENT_CHECK;
… …
2278 ANHE_at_cache (periodics [ev_active (w)]); 3380 ANHE_at_cache (periodics [ev_active (w)]);
2279 upheap (periodics, ev_active (w)); 3381 upheap (periodics, ev_active (w));
2280 3382
2281 EV_FREQUENT_CHECK; 3383 EV_FREQUENT_CHECK;
2282 3384
2283 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3385 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2284} 3386}
2285 3387
2286void noinline 3388void noinline
2287ev_periodic_stop (EV_P_ ev_periodic *w) 3389ev_periodic_stop (EV_P_ ev_periodic *w)
2288{ 3390{
… …
2293 EV_FREQUENT_CHECK; 3395 EV_FREQUENT_CHECK;
2294 3396
2295 { 3397 {
2296 int active = ev_active (w); 3398 int active = ev_active (w);
2297 3399
2298 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 3400 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2299 3401
2300 --periodiccnt; 3402 --periodiccnt;
2301 3403
2302 if (expect_true (active < periodiccnt + HEAP0)) 3404 if (expect_true (active < periodiccnt + HEAP0))
2303 { 3405 {
2304 periodics [active] = periodics [periodiccnt + HEAP0]; 3406 periodics [active] = periodics [periodiccnt + HEAP0];
2305 adjustheap (periodics, periodiccnt, active); 3407 adjustheap (periodics, periodiccnt, active);
2306 } 3408 }
2307 } 3409 }
2308 3410
2309 EV_FREQUENT_CHECK;
2310
2311 ev_stop (EV_A_ (W)w); 3411 ev_stop (EV_A_ (W)w);
3412
3413 EV_FREQUENT_CHECK;
2312} 3414}
2313 3415
2314void noinline 3416void noinline
2315ev_periodic_again (EV_P_ ev_periodic *w) 3417ev_periodic_again (EV_P_ ev_periodic *w)
2316{ 3418{
… …
2322 3424
2323#ifndef SA_RESTART 3425#ifndef SA_RESTART
2324# define SA_RESTART 0 3426# define SA_RESTART 0
2325#endif 3427#endif
2326 3428
3429#if EV_SIGNAL_ENABLE
3430
2327void noinline 3431void noinline
2328ev_signal_start (EV_P_ ev_signal *w) 3432ev_signal_start (EV_P_ ev_signal *w)
2329{ 3433{
2330#if EV_MULTIPLICITY
2331 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2332#endif
2333 if (expect_false (ev_is_active (w))) 3434 if (expect_false (ev_is_active (w)))
2334 return; 3435 return;
2335 3436
2336 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 3437 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2337 3438
2338 evpipe_init (EV_A); 3439#if EV_MULTIPLICITY
3440 assert (("libev: a signal must not be attached to two different loops",
3441 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2339 3442
2340 EV_FREQUENT_CHECK; 3443 signals [w->signum - 1].loop = EV_A;
3444#endif
2341 3445
3446 EV_FREQUENT_CHECK;
3447
3448#if EV_USE_SIGNALFD
3449 if (sigfd == -2)
2342 { 3450 {
2343#ifndef _WIN32 3451 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2344 sigset_t full, prev; 3452 if (sigfd < 0 && errno == EINVAL)
2345 sigfillset (&full); 3453 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2346 sigprocmask (SIG_SETMASK, &full, &prev);
2347#endif
2348 3454
2349 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 3455 if (sigfd >= 0)
3456 {
3457 fd_intern (sigfd); /* doing it twice will not hurt */
2350 3458
2351#ifndef _WIN32 3459 sigemptyset (&sigfd_set);
2352 sigprocmask (SIG_SETMASK, &prev, 0); 3460
2353#endif 3461 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3462 ev_set_priority (&sigfd_w, EV_MAXPRI);
3463 ev_io_start (EV_A_ &sigfd_w);
3464 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3465 }
2354 } 3466 }
3467
3468 if (sigfd >= 0)
3469 {
3470 /* TODO: check .head */
3471 sigaddset (&sigfd_set, w->signum);
3472 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3473
3474 signalfd (sigfd, &sigfd_set, 0);
3475 }
3476#endif
2355 3477
2356 ev_start (EV_A_ (W)w, 1); 3478 ev_start (EV_A_ (W)w, 1);
2357 wlist_add (&signals [w->signum - 1].head, (WL)w); 3479 wlist_add (&signals [w->signum - 1].head, (WL)w);
2358 3480
2359 if (!((WL)w)->next) 3481 if (!((WL)w)->next)
3482# if EV_USE_SIGNALFD
3483 if (sigfd < 0) /*TODO*/
3484# endif
2360 { 3485 {
2361#if _WIN32 3486# ifdef _WIN32
3487 evpipe_init (EV_A);
3488
2362 signal (w->signum, ev_sighandler); 3489 signal (w->signum, ev_sighandler);
2363#else 3490# else
2364 struct sigaction sa; 3491 struct sigaction sa;
3492
3493 evpipe_init (EV_A);
3494
2365 sa.sa_handler = ev_sighandler; 3495 sa.sa_handler = ev_sighandler;
2366 sigfillset (&sa.sa_mask); 3496 sigfillset (&sa.sa_mask);
2367 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3497 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2368 sigaction (w->signum, &sa, 0); 3498 sigaction (w->signum, &sa, 0);
3499
3500 if (origflags & EVFLAG_NOSIGMASK)
3501 {
3502 sigemptyset (&sa.sa_mask);
3503 sigaddset (&sa.sa_mask, w->signum);
3504 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3505 }
2369#endif 3506#endif
2370 } 3507 }
2371 3508
2372 EV_FREQUENT_CHECK; 3509 EV_FREQUENT_CHECK;
2373} 3510}
2374 3511
2375void noinline 3512void noinline
… …
2383 3520
2384 wlist_del (&signals [w->signum - 1].head, (WL)w); 3521 wlist_del (&signals [w->signum - 1].head, (WL)w);
2385 ev_stop (EV_A_ (W)w); 3522 ev_stop (EV_A_ (W)w);
2386 3523
2387 if (!signals [w->signum - 1].head) 3524 if (!signals [w->signum - 1].head)
3525 {
3526#if EV_MULTIPLICITY
3527 signals [w->signum - 1].loop = 0; /* unattach from signal */
3528#endif
3529#if EV_USE_SIGNALFD
3530 if (sigfd >= 0)
3531 {
3532 sigset_t ss;
3533
3534 sigemptyset (&ss);
3535 sigaddset (&ss, w->signum);
3536 sigdelset (&sigfd_set, w->signum);
3537
3538 signalfd (sigfd, &sigfd_set, 0);
3539 sigprocmask (SIG_UNBLOCK, &ss, 0);
3540 }
3541 else
3542#endif
2388 signal (w->signum, SIG_DFL); 3543 signal (w->signum, SIG_DFL);
3544 }
2389 3545
2390 EV_FREQUENT_CHECK; 3546 EV_FREQUENT_CHECK;
2391} 3547}
3548
3549#endif
3550
3551#if EV_CHILD_ENABLE
2392 3552
2393void 3553void
2394ev_child_start (EV_P_ ev_child *w) 3554ev_child_start (EV_P_ ev_child *w)
2395{ 3555{
2396#if EV_MULTIPLICITY 3556#if EV_MULTIPLICITY
2397 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3557 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2398#endif 3558#endif
2399 if (expect_false (ev_is_active (w))) 3559 if (expect_false (ev_is_active (w)))
2400 return; 3560 return;
2401 3561
2402 EV_FREQUENT_CHECK; 3562 EV_FREQUENT_CHECK;
2403 3563
2404 ev_start (EV_A_ (W)w, 1); 3564 ev_start (EV_A_ (W)w, 1);
2405 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3565 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2406 3566
2407 EV_FREQUENT_CHECK; 3567 EV_FREQUENT_CHECK;
2408} 3568}
2409 3569
2410void 3570void
… …
2414 if (expect_false (!ev_is_active (w))) 3574 if (expect_false (!ev_is_active (w)))
2415 return; 3575 return;
2416 3576
2417 EV_FREQUENT_CHECK; 3577 EV_FREQUENT_CHECK;
2418 3578
2419 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3579 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2420 ev_stop (EV_A_ (W)w); 3580 ev_stop (EV_A_ (W)w);
2421 3581
2422 EV_FREQUENT_CHECK; 3582 EV_FREQUENT_CHECK;
2423} 3583}
3584
3585#endif
2424 3586
2425#if EV_STAT_ENABLE 3587#if EV_STAT_ENABLE
2426 3588
2427# ifdef _WIN32 3589# ifdef _WIN32
2428# undef lstat 3590# undef lstat
2429# define lstat(a,b) _stati64 (a,b) 3591# define lstat(a,b) _stati64 (a,b)
2430# endif 3592# endif
2431 3593
2432#define DEF_STAT_INTERVAL 5.0074891 3594#define DEF_STAT_INTERVAL 5.0074891
3595#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2433#define MIN_STAT_INTERVAL 0.1074891 3596#define MIN_STAT_INTERVAL 0.1074891
2434 3597
2435static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3598static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2436 3599
2437#if EV_USE_INOTIFY 3600#if EV_USE_INOTIFY
2438# define EV_INOTIFY_BUFSIZE 8192 3601
3602/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3603# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2439 3604
2440static void noinline 3605static void noinline
2441infy_add (EV_P_ ev_stat *w) 3606infy_add (EV_P_ ev_stat *w)
2442{ 3607{
2443 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); 3608 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);
2444 3609
2445 if (w->wd < 0) 3610 if (w->wd >= 0)
3611 {
3612 struct statfs sfs;
3613
3614 /* now local changes will be tracked by inotify, but remote changes won't */
3615 /* unless the filesystem is known to be local, we therefore still poll */
3616 /* also do poll on <2.6.25, but with normal frequency */
3617
3618 if (!fs_2625)
3619 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3620 else if (!statfs (w->path, &sfs)
3621 && (sfs.f_type == 0x1373 /* devfs */
3622 || sfs.f_type == 0xEF53 /* ext2/3 */
3623 || sfs.f_type == 0x3153464a /* jfs */
3624 || sfs.f_type == 0x52654973 /* reiser3 */
3625 || sfs.f_type == 0x01021994 /* tempfs */
3626 || sfs.f_type == 0x58465342 /* xfs */))
3627 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3628 else
3629 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2446 { 3630 }
2447 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 3631 else
3632 {
3633 /* can't use inotify, continue to stat */
3634 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2448 3635
2449 /* monitor some parent directory for speedup hints */ 3636 /* if path is not there, monitor some parent directory for speedup hints */
2450 /* note that exceeding the hardcoded limit is not a correctness issue, */ 3637 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2451 /* but an efficiency issue only */ 3638 /* but an efficiency issue only */
2452 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3639 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2453 { 3640 {
2454 char path [4096]; 3641 char path [4096];
2455 strcpy (path, w->path); 3642 strcpy (path, w->path);
… …
2459 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 3646 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2460 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 3647 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2461 3648
2462 char *pend = strrchr (path, '/'); 3649 char *pend = strrchr (path, '/');
2463 3650
2464 if (!pend) 3651 if (!pend || pend == path)
2465 break; /* whoops, no '/', complain to your admin */ 3652 break;
2466 3653
2467 *pend = 0; 3654 *pend = 0;
2468 w->wd = inotify_add_watch (fs_fd, path, mask); 3655 w->wd = inotify_add_watch (fs_fd, path, mask);
2469 } 3656 }
2470 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3657 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2471 } 3658 }
2472 } 3659 }
2473 else
2474 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2475 3660
2476 if (w->wd >= 0) 3661 if (w->wd >= 0)
2477 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3662 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
3663
3664 /* now re-arm timer, if required */
3665 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3666 ev_timer_again (EV_A_ &w->timer);
3667 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2478} 3668}
2479 3669
2480static void noinline 3670static void noinline
2481infy_del (EV_P_ ev_stat *w) 3671infy_del (EV_P_ ev_stat *w)
2482{ 3672{
… …
2485 3675
2486 if (wd < 0) 3676 if (wd < 0)
2487 return; 3677 return;
2488 3678
2489 w->wd = -2; 3679 w->wd = -2;
2490 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3680 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2491 wlist_del (&fs_hash [slot].head, (WL)w); 3681 wlist_del (&fs_hash [slot].head, (WL)w);
2492 3682
2493 /* remove this watcher, if others are watching it, they will rearm */ 3683 /* remove this watcher, if others are watching it, they will rearm */
2494 inotify_rm_watch (fs_fd, wd); 3684 inotify_rm_watch (fs_fd, wd);
2495} 3685}
2496 3686
2497static void noinline 3687static void noinline
2498infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3688infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2499{ 3689{
2500 if (slot < 0) 3690 if (slot < 0)
2501 /* overflow, need to check for all hahs slots */ 3691 /* overflow, need to check for all hash slots */
2502 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3692 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2503 infy_wd (EV_A_ slot, wd, ev); 3693 infy_wd (EV_A_ slot, wd, ev);
2504 else 3694 else
2505 { 3695 {
2506 WL w_; 3696 WL w_;
2507 3697
2508 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3698 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2509 { 3699 {
2510 ev_stat *w = (ev_stat *)w_; 3700 ev_stat *w = (ev_stat *)w_;
2511 w_ = w_->next; /* lets us remove this watcher and all before it */ 3701 w_ = w_->next; /* lets us remove this watcher and all before it */
2512 3702
2513 if (w->wd == wd || wd == -1) 3703 if (w->wd == wd || wd == -1)
2514 { 3704 {
2515 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3705 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2516 { 3706 {
3707 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2517 w->wd = -1; 3708 w->wd = -1;
2518 infy_add (EV_A_ w); /* re-add, no matter what */ 3709 infy_add (EV_A_ w); /* re-add, no matter what */
2519 } 3710 }
2520 3711
2521 stat_timer_cb (EV_A_ &w->timer, 0); 3712 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2526 3717
2527static void 3718static void
2528infy_cb (EV_P_ ev_io *w, int revents) 3719infy_cb (EV_P_ ev_io *w, int revents)
2529{ 3720{
2530 char buf [EV_INOTIFY_BUFSIZE]; 3721 char buf [EV_INOTIFY_BUFSIZE];
2531 struct inotify_event *ev = (struct inotify_event *)buf;
2532 int ofs; 3722 int ofs;
2533 int len = read (fs_fd, buf, sizeof (buf)); 3723 int len = read (fs_fd, buf, sizeof (buf));
2534 3724
2535 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3725 for (ofs = 0; ofs < len; )
3726 {
3727 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2536 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3728 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3729 ofs += sizeof (struct inotify_event) + ev->len;
3730 }
2537} 3731}
2538 3732
2539void inline_size 3733inline_size void ecb_cold
3734ev_check_2625 (EV_P)
3735{
3736 /* kernels < 2.6.25 are borked
3737 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3738 */
3739 if (ev_linux_version () < 0x020619)
3740 return;
3741
3742 fs_2625 = 1;
3743}
3744
3745inline_size int
3746infy_newfd (void)
3747{
3748#if defined IN_CLOEXEC && defined IN_NONBLOCK
3749 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3750 if (fd >= 0)
3751 return fd;
3752#endif
3753 return inotify_init ();
3754}
3755
3756inline_size void
2540infy_init (EV_P) 3757infy_init (EV_P)
2541{ 3758{
2542 if (fs_fd != -2) 3759 if (fs_fd != -2)
2543 return; 3760 return;
2544 3761
3762 fs_fd = -1;
3763
3764 ev_check_2625 (EV_A);
3765
2545 fs_fd = inotify_init (); 3766 fs_fd = infy_newfd ();
2546 3767
2547 if (fs_fd >= 0) 3768 if (fs_fd >= 0)
2548 { 3769 {
3770 fd_intern (fs_fd);
2549 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3771 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2550 ev_set_priority (&fs_w, EV_MAXPRI); 3772 ev_set_priority (&fs_w, EV_MAXPRI);
2551 ev_io_start (EV_A_ &fs_w); 3773 ev_io_start (EV_A_ &fs_w);
3774 ev_unref (EV_A);
2552 } 3775 }
2553} 3776}
2554 3777
2555void inline_size 3778inline_size void
2556infy_fork (EV_P) 3779infy_fork (EV_P)
2557{ 3780{
2558 int slot; 3781 int slot;
2559 3782
2560 if (fs_fd < 0) 3783 if (fs_fd < 0)
2561 return; 3784 return;
2562 3785
3786 ev_ref (EV_A);
3787 ev_io_stop (EV_A_ &fs_w);
2563 close (fs_fd); 3788 close (fs_fd);
2564 fs_fd = inotify_init (); 3789 fs_fd = infy_newfd ();
2565 3790
3791 if (fs_fd >= 0)
3792 {
3793 fd_intern (fs_fd);
3794 ev_io_set (&fs_w, fs_fd, EV_READ);
3795 ev_io_start (EV_A_ &fs_w);
3796 ev_unref (EV_A);
3797 }
3798
2566 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3799 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2567 { 3800 {
2568 WL w_ = fs_hash [slot].head; 3801 WL w_ = fs_hash [slot].head;
2569 fs_hash [slot].head = 0; 3802 fs_hash [slot].head = 0;
2570 3803
2571 while (w_) 3804 while (w_)
… …
2576 w->wd = -1; 3809 w->wd = -1;
2577 3810
2578 if (fs_fd >= 0) 3811 if (fs_fd >= 0)
2579 infy_add (EV_A_ w); /* re-add, no matter what */ 3812 infy_add (EV_A_ w); /* re-add, no matter what */
2580 else 3813 else
3814 {
3815 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3816 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2581 ev_timer_start (EV_A_ &w->timer); 3817 ev_timer_again (EV_A_ &w->timer);
3818 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3819 }
2582 } 3820 }
2583
2584 } 3821 }
2585} 3822}
2586 3823
2587#endif 3824#endif
2588 3825
… …
2604static void noinline 3841static void noinline
2605stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3842stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2606{ 3843{
2607 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3844 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2608 3845
2609 /* we copy this here each the time so that */ 3846 ev_statdata prev = w->attr;
2610 /* prev has the old value when the callback gets invoked */
2611 w->prev = w->attr;
2612 ev_stat_stat (EV_A_ w); 3847 ev_stat_stat (EV_A_ w);
2613 3848
2614 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3849 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2615 if ( 3850 if (
2616 w->prev.st_dev != w->attr.st_dev 3851 prev.st_dev != w->attr.st_dev
2617 || w->prev.st_ino != w->attr.st_ino 3852 || prev.st_ino != w->attr.st_ino
2618 || w->prev.st_mode != w->attr.st_mode 3853 || prev.st_mode != w->attr.st_mode
2619 || w->prev.st_nlink != w->attr.st_nlink 3854 || prev.st_nlink != w->attr.st_nlink
2620 || w->prev.st_uid != w->attr.st_uid 3855 || prev.st_uid != w->attr.st_uid
2621 || w->prev.st_gid != w->attr.st_gid 3856 || prev.st_gid != w->attr.st_gid
2622 || w->prev.st_rdev != w->attr.st_rdev 3857 || prev.st_rdev != w->attr.st_rdev
2623 || w->prev.st_size != w->attr.st_size 3858 || prev.st_size != w->attr.st_size
2624 || w->prev.st_atime != w->attr.st_atime 3859 || prev.st_atime != w->attr.st_atime
2625 || w->prev.st_mtime != w->attr.st_mtime 3860 || prev.st_mtime != w->attr.st_mtime
2626 || w->prev.st_ctime != w->attr.st_ctime 3861 || prev.st_ctime != w->attr.st_ctime
2627 ) { 3862 ) {
3863 /* we only update w->prev on actual differences */
3864 /* in case we test more often than invoke the callback, */
3865 /* to ensure that prev is always different to attr */
3866 w->prev = prev;
3867
2628 #if EV_USE_INOTIFY 3868 #if EV_USE_INOTIFY
3869 if (fs_fd >= 0)
3870 {
2629 infy_del (EV_A_ w); 3871 infy_del (EV_A_ w);
2630 infy_add (EV_A_ w); 3872 infy_add (EV_A_ w);
2631 ev_stat_stat (EV_A_ w); /* avoid race... */ 3873 ev_stat_stat (EV_A_ w); /* avoid race... */
3874 }
2632 #endif 3875 #endif
2633 3876
2634 ev_feed_event (EV_A_ w, EV_STAT); 3877 ev_feed_event (EV_A_ w, EV_STAT);
2635 } 3878 }
2636} 3879}
… …
2639ev_stat_start (EV_P_ ev_stat *w) 3882ev_stat_start (EV_P_ ev_stat *w)
2640{ 3883{
2641 if (expect_false (ev_is_active (w))) 3884 if (expect_false (ev_is_active (w)))
2642 return; 3885 return;
2643 3886
2644 /* since we use memcmp, we need to clear any padding data etc. */
2645 memset (&w->prev, 0, sizeof (ev_statdata));
2646 memset (&w->attr, 0, sizeof (ev_statdata));
2647
2648 ev_stat_stat (EV_A_ w); 3887 ev_stat_stat (EV_A_ w);
2649 3888
3889 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2650 if (w->interval < MIN_STAT_INTERVAL) 3890 w->interval = MIN_STAT_INTERVAL;
2651 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2652 3891
2653 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3892 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2654 ev_set_priority (&w->timer, ev_priority (w)); 3893 ev_set_priority (&w->timer, ev_priority (w));
2655 3894
2656#if EV_USE_INOTIFY 3895#if EV_USE_INOTIFY
2657 infy_init (EV_A); 3896 infy_init (EV_A);
2658 3897
2659 if (fs_fd >= 0) 3898 if (fs_fd >= 0)
2660 infy_add (EV_A_ w); 3899 infy_add (EV_A_ w);
2661 else 3900 else
2662#endif 3901#endif
3902 {
2663 ev_timer_start (EV_A_ &w->timer); 3903 ev_timer_again (EV_A_ &w->timer);
3904 ev_unref (EV_A);
3905 }
2664 3906
2665 ev_start (EV_A_ (W)w, 1); 3907 ev_start (EV_A_ (W)w, 1);
2666 3908
2667 EV_FREQUENT_CHECK; 3909 EV_FREQUENT_CHECK;
2668} 3910}
… …
2677 EV_FREQUENT_CHECK; 3919 EV_FREQUENT_CHECK;
2678 3920
2679#if EV_USE_INOTIFY 3921#if EV_USE_INOTIFY
2680 infy_del (EV_A_ w); 3922 infy_del (EV_A_ w);
2681#endif 3923#endif
3924
3925 if (ev_is_active (&w->timer))
3926 {
3927 ev_ref (EV_A);
2682 ev_timer_stop (EV_A_ &w->timer); 3928 ev_timer_stop (EV_A_ &w->timer);
3929 }
2683 3930
2684 ev_stop (EV_A_ (W)w); 3931 ev_stop (EV_A_ (W)w);
2685 3932
2686 EV_FREQUENT_CHECK; 3933 EV_FREQUENT_CHECK;
2687} 3934}
… …
2732 3979
2733 EV_FREQUENT_CHECK; 3980 EV_FREQUENT_CHECK;
2734} 3981}
2735#endif 3982#endif
2736 3983
3984#if EV_PREPARE_ENABLE
2737void 3985void
2738ev_prepare_start (EV_P_ ev_prepare *w) 3986ev_prepare_start (EV_P_ ev_prepare *w)
2739{ 3987{
2740 if (expect_false (ev_is_active (w))) 3988 if (expect_false (ev_is_active (w)))
2741 return; 3989 return;
… …
2767 4015
2768 ev_stop (EV_A_ (W)w); 4016 ev_stop (EV_A_ (W)w);
2769 4017
2770 EV_FREQUENT_CHECK; 4018 EV_FREQUENT_CHECK;
2771} 4019}
4020#endif
2772 4021
4022#if EV_CHECK_ENABLE
2773void 4023void
2774ev_check_start (EV_P_ ev_check *w) 4024ev_check_start (EV_P_ ev_check *w)
2775{ 4025{
2776 if (expect_false (ev_is_active (w))) 4026 if (expect_false (ev_is_active (w)))
2777 return; 4027 return;
… …
2803 4053
2804 ev_stop (EV_A_ (W)w); 4054 ev_stop (EV_A_ (W)w);
2805 4055
2806 EV_FREQUENT_CHECK; 4056 EV_FREQUENT_CHECK;
2807} 4057}
4058#endif
2808 4059
2809#if EV_EMBED_ENABLE 4060#if EV_EMBED_ENABLE
2810void noinline 4061void noinline
2811ev_embed_sweep (EV_P_ ev_embed *w) 4062ev_embed_sweep (EV_P_ ev_embed *w)
2812{ 4063{
2813 ev_loop (w->other, EVLOOP_NONBLOCK); 4064 ev_run (w->other, EVRUN_NOWAIT);
2814} 4065}
2815 4066
2816static void 4067static void
2817embed_io_cb (EV_P_ ev_io *io, int revents) 4068embed_io_cb (EV_P_ ev_io *io, int revents)
2818{ 4069{
2819 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4070 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2820 4071
2821 if (ev_cb (w)) 4072 if (ev_cb (w))
2822 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4073 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2823 else 4074 else
2824 ev_loop (w->other, EVLOOP_NONBLOCK); 4075 ev_run (w->other, EVRUN_NOWAIT);
2825} 4076}
2826 4077
2827static void 4078static void
2828embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4079embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2829{ 4080{
2830 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4081 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2831 4082
2832 { 4083 {
2833 struct ev_loop *loop = w->other; 4084 EV_P = w->other;
2834 4085
2835 while (fdchangecnt) 4086 while (fdchangecnt)
2836 { 4087 {
2837 fd_reify (EV_A); 4088 fd_reify (EV_A);
2838 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4089 ev_run (EV_A_ EVRUN_NOWAIT);
2839 } 4090 }
2840 } 4091 }
2841} 4092}
2842 4093
2843static void 4094static void
2844embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 4095embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
2845{ 4096{
2846 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 4097 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2847 4098
4099 ev_embed_stop (EV_A_ w);
4100
2848 { 4101 {
2849 struct ev_loop *loop = w->other; 4102 EV_P = w->other;
2850 4103
2851 ev_loop_fork (EV_A); 4104 ev_loop_fork (EV_A);
4105 ev_run (EV_A_ EVRUN_NOWAIT);
2852 } 4106 }
4107
4108 ev_embed_start (EV_A_ w);
2853} 4109}
2854 4110
2855#if 0 4111#if 0
2856static void 4112static void
2857embed_idle_cb (EV_P_ ev_idle *idle, int revents) 4113embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2865{ 4121{
2866 if (expect_false (ev_is_active (w))) 4122 if (expect_false (ev_is_active (w)))
2867 return; 4123 return;
2868 4124
2869 { 4125 {
2870 struct ev_loop *loop = w->other; 4126 EV_P = w->other;
2871 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4127 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2872 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4128 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2873 } 4129 }
2874 4130
2875 EV_FREQUENT_CHECK; 4131 EV_FREQUENT_CHECK;
2876 4132
… …
2902 4158
2903 ev_io_stop (EV_A_ &w->io); 4159 ev_io_stop (EV_A_ &w->io);
2904 ev_prepare_stop (EV_A_ &w->prepare); 4160 ev_prepare_stop (EV_A_ &w->prepare);
2905 ev_fork_stop (EV_A_ &w->fork); 4161 ev_fork_stop (EV_A_ &w->fork);
2906 4162
4163 ev_stop (EV_A_ (W)w);
4164
2907 EV_FREQUENT_CHECK; 4165 EV_FREQUENT_CHECK;
2908} 4166}
2909#endif 4167#endif
2910 4168
2911#if EV_FORK_ENABLE 4169#if EV_FORK_ENABLE
… …
2944 4202
2945 EV_FREQUENT_CHECK; 4203 EV_FREQUENT_CHECK;
2946} 4204}
2947#endif 4205#endif
2948 4206
4207#if EV_CLEANUP_ENABLE
4208void
4209ev_cleanup_start (EV_P_ ev_cleanup *w)
4210{
4211 if (expect_false (ev_is_active (w)))
4212 return;
4213
4214 EV_FREQUENT_CHECK;
4215
4216 ev_start (EV_A_ (W)w, ++cleanupcnt);
4217 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4218 cleanups [cleanupcnt - 1] = w;
4219
4220 /* cleanup watchers should never keep a refcount on the loop */
4221 ev_unref (EV_A);
4222 EV_FREQUENT_CHECK;
4223}
4224
4225void
4226ev_cleanup_stop (EV_P_ ev_cleanup *w)
4227{
4228 clear_pending (EV_A_ (W)w);
4229 if (expect_false (!ev_is_active (w)))
4230 return;
4231
4232 EV_FREQUENT_CHECK;
4233 ev_ref (EV_A);
4234
4235 {
4236 int active = ev_active (w);
4237
4238 cleanups [active - 1] = cleanups [--cleanupcnt];
4239 ev_active (cleanups [active - 1]) = active;
4240 }
4241
4242 ev_stop (EV_A_ (W)w);
4243
4244 EV_FREQUENT_CHECK;
4245}
4246#endif
4247
2949#if EV_ASYNC_ENABLE 4248#if EV_ASYNC_ENABLE
2950void 4249void
2951ev_async_start (EV_P_ ev_async *w) 4250ev_async_start (EV_P_ ev_async *w)
2952{ 4251{
2953 if (expect_false (ev_is_active (w))) 4252 if (expect_false (ev_is_active (w)))
2954 return; 4253 return;
2955 4254
4255 w->sent = 0;
4256
2956 evpipe_init (EV_A); 4257 evpipe_init (EV_A);
2957 4258
2958 EV_FREQUENT_CHECK; 4259 EV_FREQUENT_CHECK;
2959 4260
2960 ev_start (EV_A_ (W)w, ++asynccnt); 4261 ev_start (EV_A_ (W)w, ++asynccnt);
… …
2987 4288
2988void 4289void
2989ev_async_send (EV_P_ ev_async *w) 4290ev_async_send (EV_P_ ev_async *w)
2990{ 4291{
2991 w->sent = 1; 4292 w->sent = 1;
2992 evpipe_write (EV_A_ &gotasync); 4293 evpipe_write (EV_A_ &async_pending);
2993} 4294}
2994#endif 4295#endif
2995 4296
2996/*****************************************************************************/ 4297/*****************************************************************************/
2997 4298
… …
3037{ 4338{
3038 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4339 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3039 4340
3040 if (expect_false (!once)) 4341 if (expect_false (!once))
3041 { 4342 {
3042 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4343 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3043 return; 4344 return;
3044 } 4345 }
3045 4346
3046 once->cb = cb; 4347 once->cb = cb;
3047 once->arg = arg; 4348 once->arg = arg;
… …
3059 ev_timer_set (&once->to, timeout, 0.); 4360 ev_timer_set (&once->to, timeout, 0.);
3060 ev_timer_start (EV_A_ &once->to); 4361 ev_timer_start (EV_A_ &once->to);
3061 } 4362 }
3062} 4363}
3063 4364
4365/*****************************************************************************/
4366
4367#if EV_WALK_ENABLE
4368void ecb_cold
4369ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
4370{
4371 int i, j;
4372 ev_watcher_list *wl, *wn;
4373
4374 if (types & (EV_IO | EV_EMBED))
4375 for (i = 0; i < anfdmax; ++i)
4376 for (wl = anfds [i].head; wl; )
4377 {
4378 wn = wl->next;
4379
4380#if EV_EMBED_ENABLE
4381 if (ev_cb ((ev_io *)wl) == embed_io_cb)
4382 {
4383 if (types & EV_EMBED)
4384 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
4385 }
4386 else
4387#endif
4388#if EV_USE_INOTIFY
4389 if (ev_cb ((ev_io *)wl) == infy_cb)
4390 ;
4391 else
4392#endif
4393 if ((ev_io *)wl != &pipe_w)
4394 if (types & EV_IO)
4395 cb (EV_A_ EV_IO, wl);
4396
4397 wl = wn;
4398 }
4399
4400 if (types & (EV_TIMER | EV_STAT))
4401 for (i = timercnt + HEAP0; i-- > HEAP0; )
4402#if EV_STAT_ENABLE
4403 /*TODO: timer is not always active*/
4404 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
4405 {
4406 if (types & EV_STAT)
4407 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
4408 }
4409 else
4410#endif
4411 if (types & EV_TIMER)
4412 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
4413
4414#if EV_PERIODIC_ENABLE
4415 if (types & EV_PERIODIC)
4416 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
4417 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
4418#endif
4419
4420#if EV_IDLE_ENABLE
4421 if (types & EV_IDLE)
4422 for (j = NUMPRI; j--; )
4423 for (i = idlecnt [j]; i--; )
4424 cb (EV_A_ EV_IDLE, idles [j][i]);
4425#endif
4426
4427#if EV_FORK_ENABLE
4428 if (types & EV_FORK)
4429 for (i = forkcnt; i--; )
4430 if (ev_cb (forks [i]) != embed_fork_cb)
4431 cb (EV_A_ EV_FORK, forks [i]);
4432#endif
4433
4434#if EV_ASYNC_ENABLE
4435 if (types & EV_ASYNC)
4436 for (i = asynccnt; i--; )
4437 cb (EV_A_ EV_ASYNC, asyncs [i]);
4438#endif
4439
4440#if EV_PREPARE_ENABLE
4441 if (types & EV_PREPARE)
4442 for (i = preparecnt; i--; )
4443# if EV_EMBED_ENABLE
4444 if (ev_cb (prepares [i]) != embed_prepare_cb)
4445# endif
4446 cb (EV_A_ EV_PREPARE, prepares [i]);
4447#endif
4448
4449#if EV_CHECK_ENABLE
4450 if (types & EV_CHECK)
4451 for (i = checkcnt; i--; )
4452 cb (EV_A_ EV_CHECK, checks [i]);
4453#endif
4454
4455#if EV_SIGNAL_ENABLE
4456 if (types & EV_SIGNAL)
4457 for (i = 0; i < EV_NSIG - 1; ++i)
4458 for (wl = signals [i].head; wl; )
4459 {
4460 wn = wl->next;
4461 cb (EV_A_ EV_SIGNAL, wl);
4462 wl = wn;
4463 }
4464#endif
4465
4466#if EV_CHILD_ENABLE
4467 if (types & EV_CHILD)
4468 for (i = (EV_PID_HASHSIZE); i--; )
4469 for (wl = childs [i]; wl; )
4470 {
4471 wn = wl->next;
4472 cb (EV_A_ EV_CHILD, wl);
4473 wl = wn;
4474 }
4475#endif
4476/* EV_STAT 0x00001000 /* stat data changed */
4477/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
4478}
4479#endif
4480
3064#if EV_MULTIPLICITY 4481#if EV_MULTIPLICITY
3065 #include "ev_wrap.h" 4482 #include "ev_wrap.h"
3066#endif 4483#endif
3067 4484
3068#ifdef __cplusplus
3069}
3070#endif
3071

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