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Comparing libev/ev.c (file contents):
Revision 1.269 by root, Wed Oct 29 06:32:48 2008 UTC vs.
Revision 1.401 by root, Tue Dec 20 04:08:35 2011 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 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
… …
160# define WIN32_LEAN_AND_MEAN 194# define WIN32_LEAN_AND_MEAN
161# include <windows.h> 195# include <windows.h>
162# ifndef EV_SELECT_IS_WINSOCKET 196# ifndef EV_SELECT_IS_WINSOCKET
163# define EV_SELECT_IS_WINSOCKET 1 197# define EV_SELECT_IS_WINSOCKET 1
164# endif 198# endif
199# undef EV_AVOID_STDIO
165#endif 200#endif
201
202/* OS X, in its infinite idiocy, actually HARDCODES
203 * a limit of 1024 into their select. Where people have brains,
204 * OS X engineers apparently have a vacuum. Or maybe they were
205 * ordered to have a vacuum, or they do anything for money.
206 * This might help. Or not.
207 */
208#define _DARWIN_UNLIMITED_SELECT 1
166 209
167/* this block tries to deduce configuration from header-defined symbols and defaults */ 210/* this block tries to deduce configuration from header-defined symbols and defaults */
211
212/* try to deduce the maximum number of signals on this platform */
213#if defined (EV_NSIG)
214/* use what's provided */
215#elif defined (NSIG)
216# define EV_NSIG (NSIG)
217#elif defined(_NSIG)
218# define EV_NSIG (_NSIG)
219#elif defined (SIGMAX)
220# define EV_NSIG (SIGMAX+1)
221#elif defined (SIG_MAX)
222# define EV_NSIG (SIG_MAX+1)
223#elif defined (_SIG_MAX)
224# define EV_NSIG (_SIG_MAX+1)
225#elif defined (MAXSIG)
226# define EV_NSIG (MAXSIG+1)
227#elif defined (MAX_SIG)
228# define EV_NSIG (MAX_SIG+1)
229#elif defined (SIGARRAYSIZE)
230# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
231#elif defined (_sys_nsig)
232# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
233#else
234# error "unable to find value for NSIG, please report"
235/* to make it compile regardless, just remove the above line, */
236/* but consider reporting it, too! :) */
237# define EV_NSIG 65
238#endif
239
240#ifndef EV_USE_FLOOR
241# define EV_USE_FLOOR 0
242#endif
243
244#ifndef EV_USE_CLOCK_SYSCALL
245# if __linux && __GLIBC__ >= 2
246# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
247# else
248# define EV_USE_CLOCK_SYSCALL 0
249# endif
250#endif
168 251
169#ifndef EV_USE_MONOTONIC 252#ifndef EV_USE_MONOTONIC
170# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 253# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
171# define EV_USE_MONOTONIC 1 254# define EV_USE_MONOTONIC EV_FEATURE_OS
172# else 255# else
173# define EV_USE_MONOTONIC 0 256# define EV_USE_MONOTONIC 0
174# endif 257# endif
175#endif 258#endif
176 259
177#ifndef EV_USE_REALTIME 260#ifndef EV_USE_REALTIME
178# define EV_USE_REALTIME 0 261# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
179#endif 262#endif
180 263
181#ifndef EV_USE_NANOSLEEP 264#ifndef EV_USE_NANOSLEEP
182# if _POSIX_C_SOURCE >= 199309L 265# if _POSIX_C_SOURCE >= 199309L
183# define EV_USE_NANOSLEEP 1 266# define EV_USE_NANOSLEEP EV_FEATURE_OS
184# else 267# else
185# define EV_USE_NANOSLEEP 0 268# define EV_USE_NANOSLEEP 0
186# endif 269# endif
187#endif 270#endif
188 271
189#ifndef EV_USE_SELECT 272#ifndef EV_USE_SELECT
190# define EV_USE_SELECT 1 273# define EV_USE_SELECT EV_FEATURE_BACKENDS
191#endif 274#endif
192 275
193#ifndef EV_USE_POLL 276#ifndef EV_USE_POLL
194# ifdef _WIN32 277# ifdef _WIN32
195# define EV_USE_POLL 0 278# define EV_USE_POLL 0
196# else 279# else
197# define EV_USE_POLL 1 280# define EV_USE_POLL EV_FEATURE_BACKENDS
198# endif 281# endif
199#endif 282#endif
200 283
201#ifndef EV_USE_EPOLL 284#ifndef EV_USE_EPOLL
202# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 285# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
203# define EV_USE_EPOLL 1 286# define EV_USE_EPOLL EV_FEATURE_BACKENDS
204# else 287# else
205# define EV_USE_EPOLL 0 288# define EV_USE_EPOLL 0
206# endif 289# endif
207#endif 290#endif
208 291
… …
214# define EV_USE_PORT 0 297# define EV_USE_PORT 0
215#endif 298#endif
216 299
217#ifndef EV_USE_INOTIFY 300#ifndef EV_USE_INOTIFY
218# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 301# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
219# define EV_USE_INOTIFY 1 302# define EV_USE_INOTIFY EV_FEATURE_OS
220# else 303# else
221# define EV_USE_INOTIFY 0 304# define EV_USE_INOTIFY 0
222# endif 305# endif
223#endif 306#endif
224 307
225#ifndef EV_PID_HASHSIZE 308#ifndef EV_PID_HASHSIZE
226# if EV_MINIMAL 309# 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 310#endif
232 311
233#ifndef EV_INOTIFY_HASHSIZE 312#ifndef EV_INOTIFY_HASHSIZE
234# if EV_MINIMAL 313# 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 314#endif
240 315
241#ifndef EV_USE_EVENTFD 316#ifndef EV_USE_EVENTFD
242# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 317# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
243# define EV_USE_EVENTFD 1 318# define EV_USE_EVENTFD EV_FEATURE_OS
244# else 319# else
245# define EV_USE_EVENTFD 0 320# define EV_USE_EVENTFD 0
321# endif
322#endif
323
324#ifndef EV_USE_SIGNALFD
325# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
326# define EV_USE_SIGNALFD EV_FEATURE_OS
327# else
328# define EV_USE_SIGNALFD 0
246# endif 329# endif
247#endif 330#endif
248 331
249#if 0 /* debugging */ 332#if 0 /* debugging */
250# define EV_VERIFY 3 333# define EV_VERIFY 3
251# define EV_USE_4HEAP 1 334# define EV_USE_4HEAP 1
252# define EV_HEAP_CACHE_AT 1 335# define EV_HEAP_CACHE_AT 1
253#endif 336#endif
254 337
255#ifndef EV_VERIFY 338#ifndef EV_VERIFY
256# define EV_VERIFY !EV_MINIMAL 339# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
257#endif 340#endif
258 341
259#ifndef EV_USE_4HEAP 342#ifndef EV_USE_4HEAP
260# define EV_USE_4HEAP !EV_MINIMAL 343# define EV_USE_4HEAP EV_FEATURE_DATA
261#endif 344#endif
262 345
263#ifndef EV_HEAP_CACHE_AT 346#ifndef EV_HEAP_CACHE_AT
264# define EV_HEAP_CACHE_AT !EV_MINIMAL 347# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
348#endif
349
350/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
351/* which makes programs even slower. might work on other unices, too. */
352#if EV_USE_CLOCK_SYSCALL
353# include <syscall.h>
354# ifdef SYS_clock_gettime
355# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
356# undef EV_USE_MONOTONIC
357# define EV_USE_MONOTONIC 1
358# else
359# undef EV_USE_CLOCK_SYSCALL
360# define EV_USE_CLOCK_SYSCALL 0
361# endif
265#endif 362#endif
266 363
267/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 364/* this block fixes any misconfiguration where we know we run into trouble otherwise */
365
366#ifdef _AIX
367/* AIX has a completely broken poll.h header */
368# undef EV_USE_POLL
369# define EV_USE_POLL 0
370#endif
268 371
269#ifndef CLOCK_MONOTONIC 372#ifndef CLOCK_MONOTONIC
270# undef EV_USE_MONOTONIC 373# undef EV_USE_MONOTONIC
271# define EV_USE_MONOTONIC 0 374# define EV_USE_MONOTONIC 0
272#endif 375#endif
… …
280# undef EV_USE_INOTIFY 383# undef EV_USE_INOTIFY
281# define EV_USE_INOTIFY 0 384# define EV_USE_INOTIFY 0
282#endif 385#endif
283 386
284#if !EV_USE_NANOSLEEP 387#if !EV_USE_NANOSLEEP
285# ifndef _WIN32 388/* hp-ux has it in sys/time.h, which we unconditionally include above */
389# if !defined(_WIN32) && !defined(__hpux)
286# include <sys/select.h> 390# include <sys/select.h>
287# endif 391# endif
288#endif 392#endif
289 393
290#if EV_USE_INOTIFY 394#if EV_USE_INOTIFY
291# include <sys/utsname.h> 395# include <sys/statfs.h>
292# include <sys/inotify.h> 396# include <sys/inotify.h>
293/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 397/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
294# ifndef IN_DONT_FOLLOW 398# ifndef IN_DONT_FOLLOW
295# undef EV_USE_INOTIFY 399# undef EV_USE_INOTIFY
296# define EV_USE_INOTIFY 0 400# define EV_USE_INOTIFY 0
… …
302#endif 406#endif
303 407
304#if EV_USE_EVENTFD 408#if EV_USE_EVENTFD
305/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 409/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
306# include <stdint.h> 410# include <stdint.h>
307# ifdef __cplusplus 411# ifndef EFD_NONBLOCK
308extern "C" { 412# define EFD_NONBLOCK O_NONBLOCK
309# endif 413# endif
310int eventfd (unsigned int initval, int flags); 414# ifndef EFD_CLOEXEC
311# ifdef __cplusplus 415# ifdef O_CLOEXEC
312} 416# define EFD_CLOEXEC O_CLOEXEC
417# else
418# define EFD_CLOEXEC 02000000
419# endif
313# endif 420# endif
421EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
422#endif
423
424#if EV_USE_SIGNALFD
425/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
426# include <stdint.h>
427# ifndef SFD_NONBLOCK
428# define SFD_NONBLOCK O_NONBLOCK
429# endif
430# ifndef SFD_CLOEXEC
431# ifdef O_CLOEXEC
432# define SFD_CLOEXEC O_CLOEXEC
433# else
434# define SFD_CLOEXEC 02000000
435# endif
436# endif
437EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
438
439struct signalfd_siginfo
440{
441 uint32_t ssi_signo;
442 char pad[128 - sizeof (uint32_t)];
443};
314#endif 444#endif
315 445
316/**/ 446/**/
317 447
318#if EV_VERIFY >= 3 448#if EV_VERIFY >= 3
319# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 449# define EV_FREQUENT_CHECK ev_verify (EV_A)
320#else 450#else
321# define EV_FREQUENT_CHECK do { } while (0) 451# define EV_FREQUENT_CHECK do { } while (0)
322#endif 452#endif
323 453
324/* 454/*
325 * This is used to avoid floating point rounding problems. 455 * This is used to work around floating point rounding problems.
326 * It is added to ev_rt_now when scheduling periodics
327 * to ensure progress, time-wise, even when rounding
328 * errors are against us.
329 * This value is good at least till the year 4000. 456 * This value is good at least till the year 4000.
330 * Better solutions welcome.
331 */ 457 */
332#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 458#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
459/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
333 460
334#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 461#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
335#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 462#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
336/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
337 463
464#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
465#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
466
467/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
468/* ECB.H BEGIN */
469/*
470 * libecb - http://software.schmorp.de/pkg/libecb
471 *
472 * Copyright (©) 2009-2011 Marc Alexander Lehmann <libecb@schmorp.de>
473 * Copyright (©) 2011 Emanuele Giaquinta
474 * All rights reserved.
475 *
476 * Redistribution and use in source and binary forms, with or without modifica-
477 * tion, are permitted provided that the following conditions are met:
478 *
479 * 1. Redistributions of source code must retain the above copyright notice,
480 * this list of conditions and the following disclaimer.
481 *
482 * 2. Redistributions in binary form must reproduce the above copyright
483 * notice, this list of conditions and the following disclaimer in the
484 * documentation and/or other materials provided with the distribution.
485 *
486 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
487 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
488 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
489 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
490 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
491 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
492 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
493 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
494 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
495 * OF THE POSSIBILITY OF SUCH DAMAGE.
496 */
497
498#ifndef ECB_H
499#define ECB_H
500
501#ifdef _WIN32
502 typedef signed char int8_t;
503 typedef unsigned char uint8_t;
504 typedef signed short int16_t;
505 typedef unsigned short uint16_t;
506 typedef signed int int32_t;
507 typedef unsigned int uint32_t;
338#if __GNUC__ >= 4 508 #if __GNUC__
339# define expect(expr,value) __builtin_expect ((expr),(value)) 509 typedef signed long long int64_t;
340# define noinline __attribute__ ((noinline)) 510 typedef unsigned long long uint64_t;
511 #else /* _MSC_VER || __BORLANDC__ */
512 typedef signed __int64 int64_t;
513 typedef unsigned __int64 uint64_t;
514 #endif
341#else 515#else
342# define expect(expr,value) (expr) 516 #include <inttypes.h>
343# define noinline
344# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
345# define inline
346# endif 517#endif
518
519/* many compilers define _GNUC_ to some versions but then only implement
520 * what their idiot authors think are the "more important" extensions,
521 * causing enormous grief in return for some better fake benchmark numbers.
522 * or so.
523 * we try to detect these and simply assume they are not gcc - if they have
524 * an issue with that they should have done it right in the first place.
525 */
526#ifndef ECB_GCC_VERSION
527 #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__)
528 #define ECB_GCC_VERSION(major,minor) 0
529 #else
530 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
347#endif 531 #endif
532#endif
348 533
534/*****************************************************************************/
535
536/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
537/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
538
539#if ECB_NO_THREADS || ECB_NO_SMP
540 #define ECB_MEMORY_FENCE do { } while (0)
541#endif
542
543#ifndef ECB_MEMORY_FENCE
544 #if ECB_GCC_VERSION(2,5) || defined(__INTEL_COMPILER) || defined(__clang__)
545 #if __i386__
546 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
547 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */
548 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */
549 #elif __amd64
550 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
551 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
552 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */
553 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
554 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
555 #elif defined(__ARM_ARCH_6__ ) || defined(__ARM_ARCH_6J__ ) \
556 || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6ZK__)
557 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
558 #elif defined(__ARM_ARCH_7__ ) || defined(__ARM_ARCH_7A__ ) \
559 || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7R__ )
560 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
561 #endif
562 #endif
563#endif
564
565#ifndef ECB_MEMORY_FENCE
566 #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER) || defined(__clang__)
567 #define ECB_MEMORY_FENCE __sync_synchronize ()
568 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */
569 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */
570 #elif _MSC_VER >= 1400 /* VC++ 2005 */
571 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
572 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
573 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
574 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
575 #elif defined(_WIN32)
576 #include <WinNT.h>
577 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
578 #endif
579#endif
580
581#ifndef ECB_MEMORY_FENCE
582 #if !ECB_AVOID_PTHREADS
583 /*
584 * if you get undefined symbol references to pthread_mutex_lock,
585 * or failure to find pthread.h, then you should implement
586 * the ECB_MEMORY_FENCE operations for your cpu/compiler
587 * OR provide pthread.h and link against the posix thread library
588 * of your system.
589 */
590 #include <pthread.h>
591 #define ECB_NEEDS_PTHREADS 1
592 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
593
594 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
595 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
596 #endif
597#endif
598
599#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE)
600 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
601#endif
602
603#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE)
604 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
605#endif
606
607/*****************************************************************************/
608
609#define ECB_C99 (__STDC_VERSION__ >= 199901L)
610
611#if __cplusplus
612 #define ecb_inline static inline
613#elif ECB_GCC_VERSION(2,5)
614 #define ecb_inline static __inline__
615#elif ECB_C99
616 #define ecb_inline static inline
617#else
618 #define ecb_inline static
619#endif
620
621#if ECB_GCC_VERSION(3,3)
622 #define ecb_restrict __restrict__
623#elif ECB_C99
624 #define ecb_restrict restrict
625#else
626 #define ecb_restrict
627#endif
628
629typedef int ecb_bool;
630
631#define ECB_CONCAT_(a, b) a ## b
632#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
633#define ECB_STRINGIFY_(a) # a
634#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
635
636#define ecb_function_ ecb_inline
637
638#if ECB_GCC_VERSION(3,1)
639 #define ecb_attribute(attrlist) __attribute__(attrlist)
640 #define ecb_is_constant(expr) __builtin_constant_p (expr)
641 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
642 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
643#else
644 #define ecb_attribute(attrlist)
645 #define ecb_is_constant(expr) 0
646 #define ecb_expect(expr,value) (expr)
647 #define ecb_prefetch(addr,rw,locality)
648#endif
649
650/* no emulation for ecb_decltype */
651#if ECB_GCC_VERSION(4,5)
652 #define ecb_decltype(x) __decltype(x)
653#elif ECB_GCC_VERSION(3,0)
654 #define ecb_decltype(x) __typeof(x)
655#endif
656
657#define ecb_noinline ecb_attribute ((__noinline__))
658#define ecb_noreturn ecb_attribute ((__noreturn__))
659#define ecb_unused ecb_attribute ((__unused__))
660#define ecb_const ecb_attribute ((__const__))
661#define ecb_pure ecb_attribute ((__pure__))
662
663#if ECB_GCC_VERSION(4,3)
664 #define ecb_artificial ecb_attribute ((__artificial__))
665 #define ecb_hot ecb_attribute ((__hot__))
666 #define ecb_cold ecb_attribute ((__cold__))
667#else
668 #define ecb_artificial
669 #define ecb_hot
670 #define ecb_cold
671#endif
672
673/* put around conditional expressions if you are very sure that the */
674/* expression is mostly true or mostly false. note that these return */
675/* booleans, not the expression. */
349#define expect_false(expr) expect ((expr) != 0, 0) 676#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
350#define expect_true(expr) expect ((expr) != 0, 1) 677#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
678/* for compatibility to the rest of the world */
679#define ecb_likely(expr) ecb_expect_true (expr)
680#define ecb_unlikely(expr) ecb_expect_false (expr)
681
682/* count trailing zero bits and count # of one bits */
683#if ECB_GCC_VERSION(3,4)
684 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
685 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
686 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
687 #define ecb_ctz32(x) __builtin_ctz (x)
688 #define ecb_ctz64(x) __builtin_ctzll (x)
689 #define ecb_popcount32(x) __builtin_popcount (x)
690 /* no popcountll */
691#else
692 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
693 ecb_function_ int
694 ecb_ctz32 (uint32_t x)
695 {
696 int r = 0;
697
698 x &= ~x + 1; /* this isolates the lowest bit */
699
700#if ECB_branchless_on_i386
701 r += !!(x & 0xaaaaaaaa) << 0;
702 r += !!(x & 0xcccccccc) << 1;
703 r += !!(x & 0xf0f0f0f0) << 2;
704 r += !!(x & 0xff00ff00) << 3;
705 r += !!(x & 0xffff0000) << 4;
706#else
707 if (x & 0xaaaaaaaa) r += 1;
708 if (x & 0xcccccccc) r += 2;
709 if (x & 0xf0f0f0f0) r += 4;
710 if (x & 0xff00ff00) r += 8;
711 if (x & 0xffff0000) r += 16;
712#endif
713
714 return r;
715 }
716
717 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
718 ecb_function_ int
719 ecb_ctz64 (uint64_t x)
720 {
721 int shift = x & 0xffffffffU ? 0 : 32;
722 return ecb_ctz32 (x >> shift) + shift;
723 }
724
725 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
726 ecb_function_ int
727 ecb_popcount32 (uint32_t x)
728 {
729 x -= (x >> 1) & 0x55555555;
730 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
731 x = ((x >> 4) + x) & 0x0f0f0f0f;
732 x *= 0x01010101;
733
734 return x >> 24;
735 }
736
737 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
738 ecb_function_ int ecb_ld32 (uint32_t x)
739 {
740 int r = 0;
741
742 if (x >> 16) { x >>= 16; r += 16; }
743 if (x >> 8) { x >>= 8; r += 8; }
744 if (x >> 4) { x >>= 4; r += 4; }
745 if (x >> 2) { x >>= 2; r += 2; }
746 if (x >> 1) { r += 1; }
747
748 return r;
749 }
750
751 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
752 ecb_function_ int ecb_ld64 (uint64_t x)
753 {
754 int r = 0;
755
756 if (x >> 32) { x >>= 32; r += 32; }
757
758 return r + ecb_ld32 (x);
759 }
760#endif
761
762/* popcount64 is only available on 64 bit cpus as gcc builtin */
763/* so for this version we are lazy */
764ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
765ecb_function_ int
766ecb_popcount64 (uint64_t x)
767{
768 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
769}
770
771ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
772ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
773ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
774ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
775ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
776ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
777ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
778ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
779
780ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
781ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
782ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
783ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
784ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
785ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
786ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
787ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
788
789#if ECB_GCC_VERSION(4,3)
790 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
791 #define ecb_bswap32(x) __builtin_bswap32 (x)
792 #define ecb_bswap64(x) __builtin_bswap64 (x)
793#else
794 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
795 ecb_function_ uint16_t
796 ecb_bswap16 (uint16_t x)
797 {
798 return ecb_rotl16 (x, 8);
799 }
800
801 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
802 ecb_function_ uint32_t
803 ecb_bswap32 (uint32_t x)
804 {
805 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
806 }
807
808 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
809 ecb_function_ uint64_t
810 ecb_bswap64 (uint64_t x)
811 {
812 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
813 }
814#endif
815
816#if ECB_GCC_VERSION(4,5)
817 #define ecb_unreachable() __builtin_unreachable ()
818#else
819 /* this seems to work fine, but gcc always emits a warning for it :/ */
820 ecb_function_ void ecb_unreachable (void) ecb_noreturn;
821 ecb_function_ void ecb_unreachable (void) { }
822#endif
823
824/* try to tell the compiler that some condition is definitely true */
825#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
826
827ecb_function_ unsigned char ecb_byteorder_helper (void) ecb_const;
828ecb_function_ unsigned char
829ecb_byteorder_helper (void)
830{
831 const uint32_t u = 0x11223344;
832 return *(unsigned char *)&u;
833}
834
835ecb_function_ ecb_bool ecb_big_endian (void) ecb_const;
836ecb_function_ ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
837ecb_function_ ecb_bool ecb_little_endian (void) ecb_const;
838ecb_function_ ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
839
840#if ECB_GCC_VERSION(3,0) || ECB_C99
841 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
842#else
843 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
844#endif
845
846#if __cplusplus
847 template<typename T>
848 static inline T ecb_div_rd (T val, T div)
849 {
850 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
851 }
852 template<typename T>
853 static inline T ecb_div_ru (T val, T div)
854 {
855 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
856 }
857#else
858 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
859 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
860#endif
861
862#if ecb_cplusplus_does_not_suck
863 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
864 template<typename T, int N>
865 static inline int ecb_array_length (const T (&arr)[N])
866 {
867 return N;
868 }
869#else
870 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
871#endif
872
873#endif
874
875/* ECB.H END */
876
877#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
878/* if your architecture doesn't need memory fences, e.g. because it is
879 * single-cpu/core, or if you use libev in a project that doesn't use libev
880 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
881 * libev, in which casess the memory fences become nops.
882 * alternatively, you can remove this #error and link against libpthread,
883 * which will then provide the memory fences.
884 */
885# error "memory fences not defined for your architecture, please report"
886#endif
887
888#ifndef ECB_MEMORY_FENCE
889# define ECB_MEMORY_FENCE do { } while (0)
890# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
891# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
892#endif
893
894#define expect_false(cond) ecb_expect_false (cond)
895#define expect_true(cond) ecb_expect_true (cond)
896#define noinline ecb_noinline
897
351#define inline_size static inline 898#define inline_size ecb_inline
352 899
353#if EV_MINIMAL 900#if EV_FEATURE_CODE
901# define inline_speed ecb_inline
902#else
354# define inline_speed static noinline 903# define inline_speed static noinline
904#endif
905
906#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
907
908#if EV_MINPRI == EV_MAXPRI
909# define ABSPRI(w) (((W)w), 0)
355#else 910#else
356# define inline_speed static inline
357#endif
358
359#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
360#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 911# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
912#endif
361 913
362#define EMPTY /* required for microsofts broken pseudo-c compiler */ 914#define EMPTY /* required for microsofts broken pseudo-c compiler */
363#define EMPTY2(a,b) /* used to suppress some warnings */ 915#define EMPTY2(a,b) /* used to suppress some warnings */
364 916
365typedef ev_watcher *W; 917typedef ev_watcher *W;
… …
367typedef ev_watcher_time *WT; 919typedef ev_watcher_time *WT;
368 920
369#define ev_active(w) ((W)(w))->active 921#define ev_active(w) ((W)(w))->active
370#define ev_at(w) ((WT)(w))->at 922#define ev_at(w) ((WT)(w))->at
371 923
924#if EV_USE_REALTIME
925/* sig_atomic_t is used to avoid per-thread variables or locking but still */
926/* giving it a reasonably high chance of working on typical architectures */
927static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
928#endif
929
372#if EV_USE_MONOTONIC 930#if EV_USE_MONOTONIC
373/* sig_atomic_t is used to avoid per-thread variables or locking but still */
374/* giving it a reasonably high chance of working on typical architetcures */
375static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 931static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
932#endif
933
934#ifndef EV_FD_TO_WIN32_HANDLE
935# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
936#endif
937#ifndef EV_WIN32_HANDLE_TO_FD
938# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
939#endif
940#ifndef EV_WIN32_CLOSE_FD
941# define EV_WIN32_CLOSE_FD(fd) close (fd)
376#endif 942#endif
377 943
378#ifdef _WIN32 944#ifdef _WIN32
379# include "ev_win32.c" 945# include "ev_win32.c"
380#endif 946#endif
381 947
382/*****************************************************************************/ 948/*****************************************************************************/
383 949
950/* define a suitable floor function (only used by periodics atm) */
951
952#if EV_USE_FLOOR
953# include <math.h>
954# define ev_floor(v) floor (v)
955#else
956
957#include <float.h>
958
959/* a floor() replacement function, should be independent of ev_tstamp type */
960static ev_tstamp noinline
961ev_floor (ev_tstamp v)
962{
963 /* the choice of shift factor is not terribly important */
964#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
965 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
966#else
967 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
968#endif
969
970 /* argument too large for an unsigned long? */
971 if (expect_false (v >= shift))
972 {
973 ev_tstamp f;
974
975 if (v == v - 1.)
976 return v; /* very large number */
977
978 f = shift * ev_floor (v * (1. / shift));
979 return f + ev_floor (v - f);
980 }
981
982 /* special treatment for negative args? */
983 if (expect_false (v < 0.))
984 {
985 ev_tstamp f = -ev_floor (-v);
986
987 return f - (f == v ? 0 : 1);
988 }
989
990 /* fits into an unsigned long */
991 return (unsigned long)v;
992}
993
994#endif
995
996/*****************************************************************************/
997
998#ifdef __linux
999# include <sys/utsname.h>
1000#endif
1001
1002static unsigned int noinline ecb_cold
1003ev_linux_version (void)
1004{
1005#ifdef __linux
1006 unsigned int v = 0;
1007 struct utsname buf;
1008 int i;
1009 char *p = buf.release;
1010
1011 if (uname (&buf))
1012 return 0;
1013
1014 for (i = 3+1; --i; )
1015 {
1016 unsigned int c = 0;
1017
1018 for (;;)
1019 {
1020 if (*p >= '0' && *p <= '9')
1021 c = c * 10 + *p++ - '0';
1022 else
1023 {
1024 p += *p == '.';
1025 break;
1026 }
1027 }
1028
1029 v = (v << 8) | c;
1030 }
1031
1032 return v;
1033#else
1034 return 0;
1035#endif
1036}
1037
1038/*****************************************************************************/
1039
1040#if EV_AVOID_STDIO
1041static void noinline ecb_cold
1042ev_printerr (const char *msg)
1043{
1044 write (STDERR_FILENO, msg, strlen (msg));
1045}
1046#endif
1047
384static void (*syserr_cb)(const char *msg); 1048static void (*syserr_cb)(const char *msg);
385 1049
386void 1050void ecb_cold
387ev_set_syserr_cb (void (*cb)(const char *msg)) 1051ev_set_syserr_cb (void (*cb)(const char *msg))
388{ 1052{
389 syserr_cb = cb; 1053 syserr_cb = cb;
390} 1054}
391 1055
392static void noinline 1056static void noinline ecb_cold
393ev_syserr (const char *msg) 1057ev_syserr (const char *msg)
394{ 1058{
395 if (!msg) 1059 if (!msg)
396 msg = "(libev) system error"; 1060 msg = "(libev) system error";
397 1061
398 if (syserr_cb) 1062 if (syserr_cb)
399 syserr_cb (msg); 1063 syserr_cb (msg);
400 else 1064 else
401 { 1065 {
1066#if EV_AVOID_STDIO
1067 ev_printerr (msg);
1068 ev_printerr (": ");
1069 ev_printerr (strerror (errno));
1070 ev_printerr ("\n");
1071#else
402 perror (msg); 1072 perror (msg);
1073#endif
403 abort (); 1074 abort ();
404 } 1075 }
405} 1076}
406 1077
407static void * 1078static void *
408ev_realloc_emul (void *ptr, long size) 1079ev_realloc_emul (void *ptr, long size)
409{ 1080{
1081#if __GLIBC__
1082 return realloc (ptr, size);
1083#else
410 /* some systems, notably openbsd and darwin, fail to properly 1084 /* some systems, notably openbsd and darwin, fail to properly
411 * implement realloc (x, 0) (as required by both ansi c-98 and 1085 * implement realloc (x, 0) (as required by both ansi c-89 and
412 * the single unix specification, so work around them here. 1086 * the single unix specification, so work around them here.
413 */ 1087 */
414 1088
415 if (size) 1089 if (size)
416 return realloc (ptr, size); 1090 return realloc (ptr, size);
417 1091
418 free (ptr); 1092 free (ptr);
419 return 0; 1093 return 0;
1094#endif
420} 1095}
421 1096
422static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1097static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
423 1098
424void 1099void ecb_cold
425ev_set_allocator (void *(*cb)(void *ptr, long size)) 1100ev_set_allocator (void *(*cb)(void *ptr, long size))
426{ 1101{
427 alloc = cb; 1102 alloc = cb;
428} 1103}
429 1104
… …
432{ 1107{
433 ptr = alloc (ptr, size); 1108 ptr = alloc (ptr, size);
434 1109
435 if (!ptr && size) 1110 if (!ptr && size)
436 { 1111 {
1112#if EV_AVOID_STDIO
1113 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1114#else
437 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1115 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1116#endif
438 abort (); 1117 abort ();
439 } 1118 }
440 1119
441 return ptr; 1120 return ptr;
442} 1121}
… …
444#define ev_malloc(size) ev_realloc (0, (size)) 1123#define ev_malloc(size) ev_realloc (0, (size))
445#define ev_free(ptr) ev_realloc ((ptr), 0) 1124#define ev_free(ptr) ev_realloc ((ptr), 0)
446 1125
447/*****************************************************************************/ 1126/*****************************************************************************/
448 1127
1128/* set in reify when reification needed */
1129#define EV_ANFD_REIFY 1
1130
1131/* file descriptor info structure */
449typedef struct 1132typedef struct
450{ 1133{
451 WL head; 1134 WL head;
452 unsigned char events; 1135 unsigned char events; /* the events watched for */
453 unsigned char reify; 1136 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
454 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1137 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
455 unsigned char unused; 1138 unsigned char unused;
456#if EV_USE_EPOLL 1139#if EV_USE_EPOLL
457 unsigned int egen; /* generation counter to counter epoll bugs */ 1140 unsigned int egen; /* generation counter to counter epoll bugs */
458#endif 1141#endif
459#if EV_SELECT_IS_WINSOCKET 1142#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
460 SOCKET handle; 1143 SOCKET handle;
461#endif 1144#endif
1145#if EV_USE_IOCP
1146 OVERLAPPED or, ow;
1147#endif
462} ANFD; 1148} ANFD;
463 1149
1150/* stores the pending event set for a given watcher */
464typedef struct 1151typedef struct
465{ 1152{
466 W w; 1153 W w;
467 int events; 1154 int events; /* the pending event set for the given watcher */
468} ANPENDING; 1155} ANPENDING;
469 1156
470#if EV_USE_INOTIFY 1157#if EV_USE_INOTIFY
471/* hash table entry per inotify-id */ 1158/* hash table entry per inotify-id */
472typedef struct 1159typedef struct
… …
475} ANFS; 1162} ANFS;
476#endif 1163#endif
477 1164
478/* Heap Entry */ 1165/* Heap Entry */
479#if EV_HEAP_CACHE_AT 1166#if EV_HEAP_CACHE_AT
1167 /* a heap element */
480 typedef struct { 1168 typedef struct {
481 ev_tstamp at; 1169 ev_tstamp at;
482 WT w; 1170 WT w;
483 } ANHE; 1171 } ANHE;
484 1172
485 #define ANHE_w(he) (he).w /* access watcher, read-write */ 1173 #define ANHE_w(he) (he).w /* access watcher, read-write */
486 #define ANHE_at(he) (he).at /* access cached at, read-only */ 1174 #define ANHE_at(he) (he).at /* access cached at, read-only */
487 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ 1175 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
488#else 1176#else
1177 /* a heap element */
489 typedef WT ANHE; 1178 typedef WT ANHE;
490 1179
491 #define ANHE_w(he) (he) 1180 #define ANHE_w(he) (he)
492 #define ANHE_at(he) (he)->at 1181 #define ANHE_at(he) (he)->at
493 #define ANHE_at_cache(he) 1182 #define ANHE_at_cache(he)
… …
504 #undef VAR 1193 #undef VAR
505 }; 1194 };
506 #include "ev_wrap.h" 1195 #include "ev_wrap.h"
507 1196
508 static struct ev_loop default_loop_struct; 1197 static struct ev_loop default_loop_struct;
509 struct ev_loop *ev_default_loop_ptr; 1198 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a defintiino despite extern */
510 1199
511#else 1200#else
512 1201
513 ev_tstamp ev_rt_now; 1202 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a defintiino despite extern */
514 #define VAR(name,decl) static decl; 1203 #define VAR(name,decl) static decl;
515 #include "ev_vars.h" 1204 #include "ev_vars.h"
516 #undef VAR 1205 #undef VAR
517 1206
518 static int ev_default_loop_ptr; 1207 static int ev_default_loop_ptr;
519 1208
520#endif 1209#endif
521 1210
1211#if EV_FEATURE_API
1212# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
1213# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
1214# define EV_INVOKE_PENDING invoke_cb (EV_A)
1215#else
1216# define EV_RELEASE_CB (void)0
1217# define EV_ACQUIRE_CB (void)0
1218# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
1219#endif
1220
1221#define EVBREAK_RECURSE 0x80
1222
522/*****************************************************************************/ 1223/*****************************************************************************/
523 1224
1225#ifndef EV_HAVE_EV_TIME
524ev_tstamp 1226ev_tstamp
525ev_time (void) 1227ev_time (void)
526{ 1228{
527#if EV_USE_REALTIME 1229#if EV_USE_REALTIME
1230 if (expect_true (have_realtime))
1231 {
528 struct timespec ts; 1232 struct timespec ts;
529 clock_gettime (CLOCK_REALTIME, &ts); 1233 clock_gettime (CLOCK_REALTIME, &ts);
530 return ts.tv_sec + ts.tv_nsec * 1e-9; 1234 return ts.tv_sec + ts.tv_nsec * 1e-9;
531#else 1235 }
1236#endif
1237
532 struct timeval tv; 1238 struct timeval tv;
533 gettimeofday (&tv, 0); 1239 gettimeofday (&tv, 0);
534 return tv.tv_sec + tv.tv_usec * 1e-6; 1240 return tv.tv_sec + tv.tv_usec * 1e-6;
535#endif
536} 1241}
1242#endif
537 1243
538ev_tstamp inline_size 1244inline_size ev_tstamp
539get_clock (void) 1245get_clock (void)
540{ 1246{
541#if EV_USE_MONOTONIC 1247#if EV_USE_MONOTONIC
542 if (expect_true (have_monotonic)) 1248 if (expect_true (have_monotonic))
543 { 1249 {
… …
564 if (delay > 0.) 1270 if (delay > 0.)
565 { 1271 {
566#if EV_USE_NANOSLEEP 1272#if EV_USE_NANOSLEEP
567 struct timespec ts; 1273 struct timespec ts;
568 1274
569 ts.tv_sec = (time_t)delay; 1275 EV_TS_SET (ts, delay);
570 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
571
572 nanosleep (&ts, 0); 1276 nanosleep (&ts, 0);
573#elif defined(_WIN32) 1277#elif defined(_WIN32)
574 Sleep ((unsigned long)(delay * 1e3)); 1278 Sleep ((unsigned long)(delay * 1e3));
575#else 1279#else
576 struct timeval tv; 1280 struct timeval tv;
577 1281
578 tv.tv_sec = (time_t)delay;
579 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
580
581 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1282 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
582 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 1283 /* something not guaranteed by newer posix versions, but guaranteed */
583 /* by older ones */ 1284 /* by older ones */
1285 EV_TV_SET (tv, delay);
584 select (0, 0, 0, 0, &tv); 1286 select (0, 0, 0, 0, &tv);
585#endif 1287#endif
586 } 1288 }
587} 1289}
588 1290
589/*****************************************************************************/ 1291/*****************************************************************************/
590 1292
591#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1293#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
592 1294
593int inline_size 1295/* find a suitable new size for the given array, */
1296/* hopefully by rounding to a nice-to-malloc size */
1297inline_size int
594array_nextsize (int elem, int cur, int cnt) 1298array_nextsize (int elem, int cur, int cnt)
595{ 1299{
596 int ncur = cur + 1; 1300 int ncur = cur + 1;
597 1301
598 do 1302 do
599 ncur <<= 1; 1303 ncur <<= 1;
600 while (cnt > ncur); 1304 while (cnt > ncur);
601 1305
602 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1306 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
603 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1307 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
604 { 1308 {
605 ncur *= elem; 1309 ncur *= elem;
606 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1310 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
607 ncur = ncur - sizeof (void *) * 4; 1311 ncur = ncur - sizeof (void *) * 4;
… …
609 } 1313 }
610 1314
611 return ncur; 1315 return ncur;
612} 1316}
613 1317
614static noinline void * 1318static void * noinline ecb_cold
615array_realloc (int elem, void *base, int *cur, int cnt) 1319array_realloc (int elem, void *base, int *cur, int cnt)
616{ 1320{
617 *cur = array_nextsize (elem, *cur, cnt); 1321 *cur = array_nextsize (elem, *cur, cnt);
618 return ev_realloc (base, elem * *cur); 1322 return ev_realloc (base, elem * *cur);
619} 1323}
… …
622 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1326 memset ((void *)(base), 0, sizeof (*(base)) * (count))
623 1327
624#define array_needsize(type,base,cur,cnt,init) \ 1328#define array_needsize(type,base,cur,cnt,init) \
625 if (expect_false ((cnt) > (cur))) \ 1329 if (expect_false ((cnt) > (cur))) \
626 { \ 1330 { \
627 int ocur_ = (cur); \ 1331 int ecb_unused ocur_ = (cur); \
628 (base) = (type *)array_realloc \ 1332 (base) = (type *)array_realloc \
629 (sizeof (type), (base), &(cur), (cnt)); \ 1333 (sizeof (type), (base), &(cur), (cnt)); \
630 init ((base) + (ocur_), (cur) - ocur_); \ 1334 init ((base) + (ocur_), (cur) - ocur_); \
631 } 1335 }
632 1336
… …
639 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 1343 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
640 } 1344 }
641#endif 1345#endif
642 1346
643#define array_free(stem, idx) \ 1347#define array_free(stem, idx) \
644 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 1348 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
645 1349
646/*****************************************************************************/ 1350/*****************************************************************************/
1351
1352/* dummy callback for pending events */
1353static void noinline
1354pendingcb (EV_P_ ev_prepare *w, int revents)
1355{
1356}
647 1357
648void noinline 1358void noinline
649ev_feed_event (EV_P_ void *w, int revents) 1359ev_feed_event (EV_P_ void *w, int revents)
650{ 1360{
651 W w_ = (W)w; 1361 W w_ = (W)w;
… …
660 pendings [pri][w_->pending - 1].w = w_; 1370 pendings [pri][w_->pending - 1].w = w_;
661 pendings [pri][w_->pending - 1].events = revents; 1371 pendings [pri][w_->pending - 1].events = revents;
662 } 1372 }
663} 1373}
664 1374
665void inline_speed 1375inline_speed void
1376feed_reverse (EV_P_ W w)
1377{
1378 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
1379 rfeeds [rfeedcnt++] = w;
1380}
1381
1382inline_size void
1383feed_reverse_done (EV_P_ int revents)
1384{
1385 do
1386 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
1387 while (rfeedcnt);
1388}
1389
1390inline_speed void
666queue_events (EV_P_ W *events, int eventcnt, int type) 1391queue_events (EV_P_ W *events, int eventcnt, int type)
667{ 1392{
668 int i; 1393 int i;
669 1394
670 for (i = 0; i < eventcnt; ++i) 1395 for (i = 0; i < eventcnt; ++i)
671 ev_feed_event (EV_A_ events [i], type); 1396 ev_feed_event (EV_A_ events [i], type);
672} 1397}
673 1398
674/*****************************************************************************/ 1399/*****************************************************************************/
675 1400
676void inline_speed 1401inline_speed void
677fd_event (EV_P_ int fd, int revents) 1402fd_event_nocheck (EV_P_ int fd, int revents)
678{ 1403{
679 ANFD *anfd = anfds + fd; 1404 ANFD *anfd = anfds + fd;
680 ev_io *w; 1405 ev_io *w;
681 1406
682 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1407 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
686 if (ev) 1411 if (ev)
687 ev_feed_event (EV_A_ (W)w, ev); 1412 ev_feed_event (EV_A_ (W)w, ev);
688 } 1413 }
689} 1414}
690 1415
1416/* do not submit kernel events for fds that have reify set */
1417/* because that means they changed while we were polling for new events */
1418inline_speed void
1419fd_event (EV_P_ int fd, int revents)
1420{
1421 ANFD *anfd = anfds + fd;
1422
1423 if (expect_true (!anfd->reify))
1424 fd_event_nocheck (EV_A_ fd, revents);
1425}
1426
691void 1427void
692ev_feed_fd_event (EV_P_ int fd, int revents) 1428ev_feed_fd_event (EV_P_ int fd, int revents)
693{ 1429{
694 if (fd >= 0 && fd < anfdmax) 1430 if (fd >= 0 && fd < anfdmax)
695 fd_event (EV_A_ fd, revents); 1431 fd_event_nocheck (EV_A_ fd, revents);
696} 1432}
697 1433
698void inline_size 1434/* make sure the external fd watch events are in-sync */
1435/* with the kernel/libev internal state */
1436inline_size void
699fd_reify (EV_P) 1437fd_reify (EV_P)
700{ 1438{
701 int i; 1439 int i;
1440
1441#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1442 for (i = 0; i < fdchangecnt; ++i)
1443 {
1444 int fd = fdchanges [i];
1445 ANFD *anfd = anfds + fd;
1446
1447 if (anfd->reify & EV__IOFDSET && anfd->head)
1448 {
1449 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1450
1451 if (handle != anfd->handle)
1452 {
1453 unsigned long arg;
1454
1455 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1456
1457 /* handle changed, but fd didn't - we need to do it in two steps */
1458 backend_modify (EV_A_ fd, anfd->events, 0);
1459 anfd->events = 0;
1460 anfd->handle = handle;
1461 }
1462 }
1463 }
1464#endif
702 1465
703 for (i = 0; i < fdchangecnt; ++i) 1466 for (i = 0; i < fdchangecnt; ++i)
704 { 1467 {
705 int fd = fdchanges [i]; 1468 int fd = fdchanges [i];
706 ANFD *anfd = anfds + fd; 1469 ANFD *anfd = anfds + fd;
707 ev_io *w; 1470 ev_io *w;
708 1471
709 unsigned char events = 0; 1472 unsigned char o_events = anfd->events;
1473 unsigned char o_reify = anfd->reify;
710 1474
711 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1475 anfd->reify = 0;
712 events |= (unsigned char)w->events;
713 1476
714#if EV_SELECT_IS_WINSOCKET 1477 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
715 if (events)
716 { 1478 {
717 unsigned long arg; 1479 anfd->events = 0;
718 #ifdef EV_FD_TO_WIN32_HANDLE 1480
719 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1481 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
720 #else 1482 anfd->events |= (unsigned char)w->events;
721 anfd->handle = _get_osfhandle (fd); 1483
722 #endif 1484 if (o_events != anfd->events)
723 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1485 o_reify = EV__IOFDSET; /* actually |= */
724 } 1486 }
725#endif
726 1487
727 { 1488 if (o_reify & EV__IOFDSET)
728 unsigned char o_events = anfd->events;
729 unsigned char o_reify = anfd->reify;
730
731 anfd->reify = 0;
732 anfd->events = events;
733
734 if (o_events != events || o_reify & EV_IOFDSET)
735 backend_modify (EV_A_ fd, o_events, events); 1489 backend_modify (EV_A_ fd, o_events, anfd->events);
736 }
737 } 1490 }
738 1491
739 fdchangecnt = 0; 1492 fdchangecnt = 0;
740} 1493}
741 1494
742void inline_size 1495/* something about the given fd changed */
1496inline_size void
743fd_change (EV_P_ int fd, int flags) 1497fd_change (EV_P_ int fd, int flags)
744{ 1498{
745 unsigned char reify = anfds [fd].reify; 1499 unsigned char reify = anfds [fd].reify;
746 anfds [fd].reify |= flags; 1500 anfds [fd].reify |= flags;
747 1501
… …
751 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1505 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
752 fdchanges [fdchangecnt - 1] = fd; 1506 fdchanges [fdchangecnt - 1] = fd;
753 } 1507 }
754} 1508}
755 1509
756void inline_speed 1510/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1511inline_speed void ecb_cold
757fd_kill (EV_P_ int fd) 1512fd_kill (EV_P_ int fd)
758{ 1513{
759 ev_io *w; 1514 ev_io *w;
760 1515
761 while ((w = (ev_io *)anfds [fd].head)) 1516 while ((w = (ev_io *)anfds [fd].head))
… …
763 ev_io_stop (EV_A_ w); 1518 ev_io_stop (EV_A_ w);
764 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1519 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
765 } 1520 }
766} 1521}
767 1522
768int inline_size 1523/* check whether the given fd is actually valid, for error recovery */
1524inline_size int ecb_cold
769fd_valid (int fd) 1525fd_valid (int fd)
770{ 1526{
771#ifdef _WIN32 1527#ifdef _WIN32
772 return _get_osfhandle (fd) != -1; 1528 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
773#else 1529#else
774 return fcntl (fd, F_GETFD) != -1; 1530 return fcntl (fd, F_GETFD) != -1;
775#endif 1531#endif
776} 1532}
777 1533
778/* called on EBADF to verify fds */ 1534/* called on EBADF to verify fds */
779static void noinline 1535static void noinline ecb_cold
780fd_ebadf (EV_P) 1536fd_ebadf (EV_P)
781{ 1537{
782 int fd; 1538 int fd;
783 1539
784 for (fd = 0; fd < anfdmax; ++fd) 1540 for (fd = 0; fd < anfdmax; ++fd)
… …
786 if (!fd_valid (fd) && errno == EBADF) 1542 if (!fd_valid (fd) && errno == EBADF)
787 fd_kill (EV_A_ fd); 1543 fd_kill (EV_A_ fd);
788} 1544}
789 1545
790/* called on ENOMEM in select/poll to kill some fds and retry */ 1546/* called on ENOMEM in select/poll to kill some fds and retry */
791static void noinline 1547static void noinline ecb_cold
792fd_enomem (EV_P) 1548fd_enomem (EV_P)
793{ 1549{
794 int fd; 1550 int fd;
795 1551
796 for (fd = anfdmax; fd--; ) 1552 for (fd = anfdmax; fd--; )
797 if (anfds [fd].events) 1553 if (anfds [fd].events)
798 { 1554 {
799 fd_kill (EV_A_ fd); 1555 fd_kill (EV_A_ fd);
800 return; 1556 break;
801 } 1557 }
802} 1558}
803 1559
804/* usually called after fork if backend needs to re-arm all fds from scratch */ 1560/* usually called after fork if backend needs to re-arm all fds from scratch */
805static void noinline 1561static void noinline
… …
810 for (fd = 0; fd < anfdmax; ++fd) 1566 for (fd = 0; fd < anfdmax; ++fd)
811 if (anfds [fd].events) 1567 if (anfds [fd].events)
812 { 1568 {
813 anfds [fd].events = 0; 1569 anfds [fd].events = 0;
814 anfds [fd].emask = 0; 1570 anfds [fd].emask = 0;
815 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1571 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
816 } 1572 }
817} 1573}
818 1574
1575/* used to prepare libev internal fd's */
1576/* this is not fork-safe */
1577inline_speed void
1578fd_intern (int fd)
1579{
1580#ifdef _WIN32
1581 unsigned long arg = 1;
1582 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1583#else
1584 fcntl (fd, F_SETFD, FD_CLOEXEC);
1585 fcntl (fd, F_SETFL, O_NONBLOCK);
1586#endif
1587}
1588
819/*****************************************************************************/ 1589/*****************************************************************************/
820 1590
821/* 1591/*
822 * the heap functions want a real array index. array index 0 uis guaranteed to not 1592 * the heap functions want a real array index. array index 0 is guaranteed to not
823 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1593 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
824 * the branching factor of the d-tree. 1594 * the branching factor of the d-tree.
825 */ 1595 */
826 1596
827/* 1597/*
… …
836#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1606#define HEAP0 (DHEAP - 1) /* index of first element in heap */
837#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 1607#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
838#define UPHEAP_DONE(p,k) ((p) == (k)) 1608#define UPHEAP_DONE(p,k) ((p) == (k))
839 1609
840/* away from the root */ 1610/* away from the root */
841void inline_speed 1611inline_speed void
842downheap (ANHE *heap, int N, int k) 1612downheap (ANHE *heap, int N, int k)
843{ 1613{
844 ANHE he = heap [k]; 1614 ANHE he = heap [k];
845 ANHE *E = heap + N + HEAP0; 1615 ANHE *E = heap + N + HEAP0;
846 1616
… …
886#define HEAP0 1 1656#define HEAP0 1
887#define HPARENT(k) ((k) >> 1) 1657#define HPARENT(k) ((k) >> 1)
888#define UPHEAP_DONE(p,k) (!(p)) 1658#define UPHEAP_DONE(p,k) (!(p))
889 1659
890/* away from the root */ 1660/* away from the root */
891void inline_speed 1661inline_speed void
892downheap (ANHE *heap, int N, int k) 1662downheap (ANHE *heap, int N, int k)
893{ 1663{
894 ANHE he = heap [k]; 1664 ANHE he = heap [k];
895 1665
896 for (;;) 1666 for (;;)
897 { 1667 {
898 int c = k << 1; 1668 int c = k << 1;
899 1669
900 if (c > N + HEAP0 - 1) 1670 if (c >= N + HEAP0)
901 break; 1671 break;
902 1672
903 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1673 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
904 ? 1 : 0; 1674 ? 1 : 0;
905 1675
… …
916 ev_active (ANHE_w (he)) = k; 1686 ev_active (ANHE_w (he)) = k;
917} 1687}
918#endif 1688#endif
919 1689
920/* towards the root */ 1690/* towards the root */
921void inline_speed 1691inline_speed void
922upheap (ANHE *heap, int k) 1692upheap (ANHE *heap, int k)
923{ 1693{
924 ANHE he = heap [k]; 1694 ANHE he = heap [k];
925 1695
926 for (;;) 1696 for (;;)
… …
937 1707
938 heap [k] = he; 1708 heap [k] = he;
939 ev_active (ANHE_w (he)) = k; 1709 ev_active (ANHE_w (he)) = k;
940} 1710}
941 1711
942void inline_size 1712/* move an element suitably so it is in a correct place */
1713inline_size void
943adjustheap (ANHE *heap, int N, int k) 1714adjustheap (ANHE *heap, int N, int k)
944{ 1715{
945 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1716 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
946 upheap (heap, k); 1717 upheap (heap, k);
947 else 1718 else
948 downheap (heap, N, k); 1719 downheap (heap, N, k);
949} 1720}
950 1721
951/* rebuild the heap: this function is used only once and executed rarely */ 1722/* rebuild the heap: this function is used only once and executed rarely */
952void inline_size 1723inline_size void
953reheap (ANHE *heap, int N) 1724reheap (ANHE *heap, int N)
954{ 1725{
955 int i; 1726 int i;
956 1727
957 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ 1728 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
… …
960 upheap (heap, i + HEAP0); 1731 upheap (heap, i + HEAP0);
961} 1732}
962 1733
963/*****************************************************************************/ 1734/*****************************************************************************/
964 1735
1736/* associate signal watchers to a signal signal */
965typedef struct 1737typedef struct
966{ 1738{
1739 EV_ATOMIC_T pending;
1740#if EV_MULTIPLICITY
1741 EV_P;
1742#endif
967 WL head; 1743 WL head;
968 EV_ATOMIC_T gotsig;
969} ANSIG; 1744} ANSIG;
970 1745
971static ANSIG *signals; 1746static ANSIG signals [EV_NSIG - 1];
972static int signalmax;
973
974static EV_ATOMIC_T gotsig;
975 1747
976/*****************************************************************************/ 1748/*****************************************************************************/
977 1749
978void inline_speed 1750#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
979fd_intern (int fd)
980{
981#ifdef _WIN32
982 unsigned long arg = 1;
983 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
984#else
985 fcntl (fd, F_SETFD, FD_CLOEXEC);
986 fcntl (fd, F_SETFL, O_NONBLOCK);
987#endif
988}
989 1751
990static void noinline 1752static void noinline ecb_cold
991evpipe_init (EV_P) 1753evpipe_init (EV_P)
992{ 1754{
993 if (!ev_is_active (&pipeev)) 1755 if (!ev_is_active (&pipe_w))
994 { 1756 {
995#if EV_USE_EVENTFD 1757# if EV_USE_EVENTFD
1758 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1759 if (evfd < 0 && errno == EINVAL)
996 if ((evfd = eventfd (0, 0)) >= 0) 1760 evfd = eventfd (0, 0);
1761
1762 if (evfd >= 0)
997 { 1763 {
998 evpipe [0] = -1; 1764 evpipe [0] = -1;
999 fd_intern (evfd); 1765 fd_intern (evfd); /* doing it twice doesn't hurt */
1000 ev_io_set (&pipeev, evfd, EV_READ); 1766 ev_io_set (&pipe_w, evfd, EV_READ);
1001 } 1767 }
1002 else 1768 else
1003#endif 1769# endif
1004 { 1770 {
1005 while (pipe (evpipe)) 1771 while (pipe (evpipe))
1006 ev_syserr ("(libev) error creating signal/async pipe"); 1772 ev_syserr ("(libev) error creating signal/async pipe");
1007 1773
1008 fd_intern (evpipe [0]); 1774 fd_intern (evpipe [0]);
1009 fd_intern (evpipe [1]); 1775 fd_intern (evpipe [1]);
1010 ev_io_set (&pipeev, evpipe [0], EV_READ); 1776 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1011 } 1777 }
1012 1778
1013 ev_io_start (EV_A_ &pipeev); 1779 ev_io_start (EV_A_ &pipe_w);
1014 ev_unref (EV_A); /* watcher should not keep loop alive */ 1780 ev_unref (EV_A); /* watcher should not keep loop alive */
1015 } 1781 }
1016} 1782}
1017 1783
1018void inline_size 1784inline_speed void
1019evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1785evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1020{ 1786{
1021 if (!*flag) 1787 if (expect_true (*flag))
1788 return;
1789
1790 *flag = 1;
1791
1792 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1793
1794 pipe_write_skipped = 1;
1795
1796 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1797
1798 if (pipe_write_wanted)
1022 { 1799 {
1800 int old_errno;
1801
1802 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1803
1023 int old_errno = errno; /* save errno because write might clobber it */ 1804 old_errno = errno; /* save errno because write will clobber it */
1024
1025 *flag = 1;
1026 1805
1027#if EV_USE_EVENTFD 1806#if EV_USE_EVENTFD
1028 if (evfd >= 0) 1807 if (evfd >= 0)
1029 { 1808 {
1030 uint64_t counter = 1; 1809 uint64_t counter = 1;
1031 write (evfd, &counter, sizeof (uint64_t)); 1810 write (evfd, &counter, sizeof (uint64_t));
1032 } 1811 }
1033 else 1812 else
1034#endif 1813#endif
1814 {
1815 /* win32 people keep sending patches that change this write() to send() */
1816 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1817 /* so when you think this write should be a send instead, please find out */
1818 /* where your send() is from - it's definitely not the microsoft send, and */
1819 /* tell me. thank you. */
1035 write (evpipe [1], &old_errno, 1); 1820 write (evpipe [1], &(evpipe [1]), 1);
1821 }
1036 1822
1037 errno = old_errno; 1823 errno = old_errno;
1038 } 1824 }
1039} 1825}
1040 1826
1827/* called whenever the libev signal pipe */
1828/* got some events (signal, async) */
1041static void 1829static void
1042pipecb (EV_P_ ev_io *iow, int revents) 1830pipecb (EV_P_ ev_io *iow, int revents)
1043{ 1831{
1832 int i;
1833
1834 if (revents & EV_READ)
1835 {
1044#if EV_USE_EVENTFD 1836#if EV_USE_EVENTFD
1045 if (evfd >= 0) 1837 if (evfd >= 0)
1046 { 1838 {
1047 uint64_t counter; 1839 uint64_t counter;
1048 read (evfd, &counter, sizeof (uint64_t)); 1840 read (evfd, &counter, sizeof (uint64_t));
1049 } 1841 }
1050 else 1842 else
1051#endif 1843#endif
1052 { 1844 {
1053 char dummy; 1845 char dummy;
1846 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1054 read (evpipe [0], &dummy, 1); 1847 read (evpipe [0], &dummy, 1);
1848 }
1849 }
1850
1851 pipe_write_skipped = 0;
1852
1853#if EV_SIGNAL_ENABLE
1854 if (sig_pending)
1055 } 1855 {
1856 sig_pending = 0;
1056 1857
1057 if (gotsig && ev_is_default_loop (EV_A)) 1858 for (i = EV_NSIG - 1; i--; )
1058 { 1859 if (expect_false (signals [i].pending))
1059 int signum;
1060 gotsig = 0;
1061
1062 for (signum = signalmax; signum--; )
1063 if (signals [signum].gotsig)
1064 ev_feed_signal_event (EV_A_ signum + 1); 1860 ev_feed_signal_event (EV_A_ i + 1);
1065 } 1861 }
1862#endif
1066 1863
1067#if EV_ASYNC_ENABLE 1864#if EV_ASYNC_ENABLE
1068 if (gotasync) 1865 if (async_pending)
1069 { 1866 {
1070 int i; 1867 async_pending = 0;
1071 gotasync = 0;
1072 1868
1073 for (i = asynccnt; i--; ) 1869 for (i = asynccnt; i--; )
1074 if (asyncs [i]->sent) 1870 if (asyncs [i]->sent)
1075 { 1871 {
1076 asyncs [i]->sent = 0; 1872 asyncs [i]->sent = 0;
… …
1080#endif 1876#endif
1081} 1877}
1082 1878
1083/*****************************************************************************/ 1879/*****************************************************************************/
1084 1880
1881void
1882ev_feed_signal (int signum)
1883{
1884#if EV_MULTIPLICITY
1885 EV_P = signals [signum - 1].loop;
1886
1887 if (!EV_A)
1888 return;
1889#endif
1890
1891 if (!ev_active (&pipe_w))
1892 return;
1893
1894 signals [signum - 1].pending = 1;
1895 evpipe_write (EV_A_ &sig_pending);
1896}
1897
1085static void 1898static void
1086ev_sighandler (int signum) 1899ev_sighandler (int signum)
1087{ 1900{
1088#if EV_MULTIPLICITY
1089 struct ev_loop *loop = &default_loop_struct;
1090#endif
1091
1092#if _WIN32 1901#ifdef _WIN32
1093 signal (signum, ev_sighandler); 1902 signal (signum, ev_sighandler);
1094#endif 1903#endif
1095 1904
1096 signals [signum - 1].gotsig = 1; 1905 ev_feed_signal (signum);
1097 evpipe_write (EV_A_ &gotsig);
1098} 1906}
1099 1907
1100void noinline 1908void noinline
1101ev_feed_signal_event (EV_P_ int signum) 1909ev_feed_signal_event (EV_P_ int signum)
1102{ 1910{
1103 WL w; 1911 WL w;
1104 1912
1913 if (expect_false (signum <= 0 || signum > EV_NSIG))
1914 return;
1915
1916 --signum;
1917
1105#if EV_MULTIPLICITY 1918#if EV_MULTIPLICITY
1106 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1919 /* it is permissible to try to feed a signal to the wrong loop */
1107#endif 1920 /* or, likely more useful, feeding a signal nobody is waiting for */
1108 1921
1109 --signum; 1922 if (expect_false (signals [signum].loop != EV_A))
1110
1111 if (signum < 0 || signum >= signalmax)
1112 return; 1923 return;
1924#endif
1113 1925
1114 signals [signum].gotsig = 0; 1926 signals [signum].pending = 0;
1115 1927
1116 for (w = signals [signum].head; w; w = w->next) 1928 for (w = signals [signum].head; w; w = w->next)
1117 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1929 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1118} 1930}
1119 1931
1932#if EV_USE_SIGNALFD
1933static void
1934sigfdcb (EV_P_ ev_io *iow, int revents)
1935{
1936 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1937
1938 for (;;)
1939 {
1940 ssize_t res = read (sigfd, si, sizeof (si));
1941
1942 /* not ISO-C, as res might be -1, but works with SuS */
1943 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1944 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1945
1946 if (res < (ssize_t)sizeof (si))
1947 break;
1948 }
1949}
1950#endif
1951
1952#endif
1953
1120/*****************************************************************************/ 1954/*****************************************************************************/
1121 1955
1956#if EV_CHILD_ENABLE
1122static WL childs [EV_PID_HASHSIZE]; 1957static WL childs [EV_PID_HASHSIZE];
1123
1124#ifndef _WIN32
1125 1958
1126static ev_signal childev; 1959static ev_signal childev;
1127 1960
1128#ifndef WIFCONTINUED 1961#ifndef WIFCONTINUED
1129# define WIFCONTINUED(status) 0 1962# define WIFCONTINUED(status) 0
1130#endif 1963#endif
1131 1964
1132void inline_speed 1965/* handle a single child status event */
1966inline_speed void
1133child_reap (EV_P_ int chain, int pid, int status) 1967child_reap (EV_P_ int chain, int pid, int status)
1134{ 1968{
1135 ev_child *w; 1969 ev_child *w;
1136 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1970 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1137 1971
1138 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1972 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1139 { 1973 {
1140 if ((w->pid == pid || !w->pid) 1974 if ((w->pid == pid || !w->pid)
1141 && (!traced || (w->flags & 1))) 1975 && (!traced || (w->flags & 1)))
1142 { 1976 {
1143 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1977 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1150 1984
1151#ifndef WCONTINUED 1985#ifndef WCONTINUED
1152# define WCONTINUED 0 1986# define WCONTINUED 0
1153#endif 1987#endif
1154 1988
1989/* called on sigchld etc., calls waitpid */
1155static void 1990static void
1156childcb (EV_P_ ev_signal *sw, int revents) 1991childcb (EV_P_ ev_signal *sw, int revents)
1157{ 1992{
1158 int pid, status; 1993 int pid, status;
1159 1994
… …
1167 /* make sure we are called again until all children have been reaped */ 2002 /* make sure we are called again until all children have been reaped */
1168 /* we need to do it this way so that the callback gets called before we continue */ 2003 /* we need to do it this way so that the callback gets called before we continue */
1169 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2004 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1170 2005
1171 child_reap (EV_A_ pid, pid, status); 2006 child_reap (EV_A_ pid, pid, status);
1172 if (EV_PID_HASHSIZE > 1) 2007 if ((EV_PID_HASHSIZE) > 1)
1173 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2008 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1174} 2009}
1175 2010
1176#endif 2011#endif
1177 2012
1178/*****************************************************************************/ 2013/*****************************************************************************/
1179 2014
2015#if EV_USE_IOCP
2016# include "ev_iocp.c"
2017#endif
1180#if EV_USE_PORT 2018#if EV_USE_PORT
1181# include "ev_port.c" 2019# include "ev_port.c"
1182#endif 2020#endif
1183#if EV_USE_KQUEUE 2021#if EV_USE_KQUEUE
1184# include "ev_kqueue.c" 2022# include "ev_kqueue.c"
… …
1191#endif 2029#endif
1192#if EV_USE_SELECT 2030#if EV_USE_SELECT
1193# include "ev_select.c" 2031# include "ev_select.c"
1194#endif 2032#endif
1195 2033
1196int 2034int ecb_cold
1197ev_version_major (void) 2035ev_version_major (void)
1198{ 2036{
1199 return EV_VERSION_MAJOR; 2037 return EV_VERSION_MAJOR;
1200} 2038}
1201 2039
1202int 2040int ecb_cold
1203ev_version_minor (void) 2041ev_version_minor (void)
1204{ 2042{
1205 return EV_VERSION_MINOR; 2043 return EV_VERSION_MINOR;
1206} 2044}
1207 2045
1208/* return true if we are running with elevated privileges and should ignore env variables */ 2046/* return true if we are running with elevated privileges and should ignore env variables */
1209int inline_size 2047int inline_size ecb_cold
1210enable_secure (void) 2048enable_secure (void)
1211{ 2049{
1212#ifdef _WIN32 2050#ifdef _WIN32
1213 return 0; 2051 return 0;
1214#else 2052#else
1215 return getuid () != geteuid () 2053 return getuid () != geteuid ()
1216 || getgid () != getegid (); 2054 || getgid () != getegid ();
1217#endif 2055#endif
1218} 2056}
1219 2057
1220unsigned int 2058unsigned int ecb_cold
1221ev_supported_backends (void) 2059ev_supported_backends (void)
1222{ 2060{
1223 unsigned int flags = 0; 2061 unsigned int flags = 0;
1224 2062
1225 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2063 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1229 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2067 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1230 2068
1231 return flags; 2069 return flags;
1232} 2070}
1233 2071
1234unsigned int 2072unsigned int ecb_cold
1235ev_recommended_backends (void) 2073ev_recommended_backends (void)
1236{ 2074{
1237 unsigned int flags = ev_supported_backends (); 2075 unsigned int flags = ev_supported_backends ();
1238 2076
1239#ifndef __NetBSD__ 2077#ifndef __NetBSD__
1240 /* kqueue is borked on everything but netbsd apparently */ 2078 /* kqueue is borked on everything but netbsd apparently */
1241 /* it usually doesn't work correctly on anything but sockets and pipes */ 2079 /* it usually doesn't work correctly on anything but sockets and pipes */
1242 flags &= ~EVBACKEND_KQUEUE; 2080 flags &= ~EVBACKEND_KQUEUE;
1243#endif 2081#endif
1244#ifdef __APPLE__ 2082#ifdef __APPLE__
1245 // flags &= ~EVBACKEND_KQUEUE; for documentation 2083 /* only select works correctly on that "unix-certified" platform */
1246 flags &= ~EVBACKEND_POLL; 2084 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
2085 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
2086#endif
2087#ifdef __FreeBSD__
2088 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1247#endif 2089#endif
1248 2090
1249 return flags; 2091 return flags;
1250} 2092}
1251 2093
1252unsigned int 2094unsigned int ecb_cold
1253ev_embeddable_backends (void) 2095ev_embeddable_backends (void)
1254{ 2096{
1255 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2097 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1256 2098
1257 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2099 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1258 /* please fix it and tell me how to detect the fix */ 2100 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1259 flags &= ~EVBACKEND_EPOLL; 2101 flags &= ~EVBACKEND_EPOLL;
1260 2102
1261 return flags; 2103 return flags;
1262} 2104}
1263 2105
1264unsigned int 2106unsigned int
1265ev_backend (EV_P) 2107ev_backend (EV_P)
1266{ 2108{
1267 return backend; 2109 return backend;
1268} 2110}
1269 2111
2112#if EV_FEATURE_API
1270unsigned int 2113unsigned int
1271ev_loop_count (EV_P) 2114ev_iteration (EV_P)
1272{ 2115{
1273 return loop_count; 2116 return loop_count;
2117}
2118
2119unsigned int
2120ev_depth (EV_P)
2121{
2122 return loop_depth;
1274} 2123}
1275 2124
1276void 2125void
1277ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2126ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1278{ 2127{
… …
1283ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2132ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1284{ 2133{
1285 timeout_blocktime = interval; 2134 timeout_blocktime = interval;
1286} 2135}
1287 2136
2137void
2138ev_set_userdata (EV_P_ void *data)
2139{
2140 userdata = data;
2141}
2142
2143void *
2144ev_userdata (EV_P)
2145{
2146 return userdata;
2147}
2148
2149void
2150ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
2151{
2152 invoke_cb = invoke_pending_cb;
2153}
2154
2155void
2156ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
2157{
2158 release_cb = release;
2159 acquire_cb = acquire;
2160}
2161#endif
2162
2163/* initialise a loop structure, must be zero-initialised */
1288static void noinline 2164static void noinline ecb_cold
1289loop_init (EV_P_ unsigned int flags) 2165loop_init (EV_P_ unsigned int flags)
1290{ 2166{
1291 if (!backend) 2167 if (!backend)
1292 { 2168 {
2169 origflags = flags;
2170
2171#if EV_USE_REALTIME
2172 if (!have_realtime)
2173 {
2174 struct timespec ts;
2175
2176 if (!clock_gettime (CLOCK_REALTIME, &ts))
2177 have_realtime = 1;
2178 }
2179#endif
2180
1293#if EV_USE_MONOTONIC 2181#if EV_USE_MONOTONIC
2182 if (!have_monotonic)
1294 { 2183 {
1295 struct timespec ts; 2184 struct timespec ts;
2185
1296 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2186 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1297 have_monotonic = 1; 2187 have_monotonic = 1;
1298 } 2188 }
1299#endif
1300
1301 ev_rt_now = ev_time ();
1302 mn_now = get_clock ();
1303 now_floor = mn_now;
1304 rtmn_diff = ev_rt_now - mn_now;
1305
1306 io_blocktime = 0.;
1307 timeout_blocktime = 0.;
1308 backend = 0;
1309 backend_fd = -1;
1310 gotasync = 0;
1311#if EV_USE_INOTIFY
1312 fs_fd = -2;
1313#endif 2189#endif
1314 2190
1315 /* pid check not overridable via env */ 2191 /* pid check not overridable via env */
1316#ifndef _WIN32 2192#ifndef _WIN32
1317 if (flags & EVFLAG_FORKCHECK) 2193 if (flags & EVFLAG_FORKCHECK)
… …
1321 if (!(flags & EVFLAG_NOENV) 2197 if (!(flags & EVFLAG_NOENV)
1322 && !enable_secure () 2198 && !enable_secure ()
1323 && getenv ("LIBEV_FLAGS")) 2199 && getenv ("LIBEV_FLAGS"))
1324 flags = atoi (getenv ("LIBEV_FLAGS")); 2200 flags = atoi (getenv ("LIBEV_FLAGS"));
1325 2201
1326 if (!(flags & 0x0000ffffU)) 2202 ev_rt_now = ev_time ();
2203 mn_now = get_clock ();
2204 now_floor = mn_now;
2205 rtmn_diff = ev_rt_now - mn_now;
2206#if EV_FEATURE_API
2207 invoke_cb = ev_invoke_pending;
2208#endif
2209
2210 io_blocktime = 0.;
2211 timeout_blocktime = 0.;
2212 backend = 0;
2213 backend_fd = -1;
2214 sig_pending = 0;
2215#if EV_ASYNC_ENABLE
2216 async_pending = 0;
2217#endif
2218 pipe_write_skipped = 0;
2219 pipe_write_wanted = 0;
2220#if EV_USE_INOTIFY
2221 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2222#endif
2223#if EV_USE_SIGNALFD
2224 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2225#endif
2226
2227 if (!(flags & EVBACKEND_MASK))
1327 flags |= ev_recommended_backends (); 2228 flags |= ev_recommended_backends ();
1328 2229
2230#if EV_USE_IOCP
2231 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2232#endif
1329#if EV_USE_PORT 2233#if EV_USE_PORT
1330 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2234 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1331#endif 2235#endif
1332#if EV_USE_KQUEUE 2236#if EV_USE_KQUEUE
1333 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2237 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1340#endif 2244#endif
1341#if EV_USE_SELECT 2245#if EV_USE_SELECT
1342 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2246 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1343#endif 2247#endif
1344 2248
2249 ev_prepare_init (&pending_w, pendingcb);
2250
2251#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1345 ev_init (&pipeev, pipecb); 2252 ev_init (&pipe_w, pipecb);
1346 ev_set_priority (&pipeev, EV_MAXPRI); 2253 ev_set_priority (&pipe_w, EV_MAXPRI);
2254#endif
1347 } 2255 }
1348} 2256}
1349 2257
1350static void noinline 2258/* free up a loop structure */
2259void ecb_cold
1351loop_destroy (EV_P) 2260ev_loop_destroy (EV_P)
1352{ 2261{
1353 int i; 2262 int i;
1354 2263
2264#if EV_MULTIPLICITY
2265 /* mimic free (0) */
2266 if (!EV_A)
2267 return;
2268#endif
2269
2270#if EV_CLEANUP_ENABLE
2271 /* queue cleanup watchers (and execute them) */
2272 if (expect_false (cleanupcnt))
2273 {
2274 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2275 EV_INVOKE_PENDING;
2276 }
2277#endif
2278
2279#if EV_CHILD_ENABLE
2280 if (ev_is_active (&childev))
2281 {
2282 ev_ref (EV_A); /* child watcher */
2283 ev_signal_stop (EV_A_ &childev);
2284 }
2285#endif
2286
1355 if (ev_is_active (&pipeev)) 2287 if (ev_is_active (&pipe_w))
1356 { 2288 {
1357 ev_ref (EV_A); /* signal watcher */ 2289 /*ev_ref (EV_A);*/
1358 ev_io_stop (EV_A_ &pipeev); 2290 /*ev_io_stop (EV_A_ &pipe_w);*/
1359 2291
1360#if EV_USE_EVENTFD 2292#if EV_USE_EVENTFD
1361 if (evfd >= 0) 2293 if (evfd >= 0)
1362 close (evfd); 2294 close (evfd);
1363#endif 2295#endif
1364 2296
1365 if (evpipe [0] >= 0) 2297 if (evpipe [0] >= 0)
1366 { 2298 {
1367 close (evpipe [0]); 2299 EV_WIN32_CLOSE_FD (evpipe [0]);
1368 close (evpipe [1]); 2300 EV_WIN32_CLOSE_FD (evpipe [1]);
1369 } 2301 }
1370 } 2302 }
2303
2304#if EV_USE_SIGNALFD
2305 if (ev_is_active (&sigfd_w))
2306 close (sigfd);
2307#endif
1371 2308
1372#if EV_USE_INOTIFY 2309#if EV_USE_INOTIFY
1373 if (fs_fd >= 0) 2310 if (fs_fd >= 0)
1374 close (fs_fd); 2311 close (fs_fd);
1375#endif 2312#endif
1376 2313
1377 if (backend_fd >= 0) 2314 if (backend_fd >= 0)
1378 close (backend_fd); 2315 close (backend_fd);
1379 2316
2317#if EV_USE_IOCP
2318 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2319#endif
1380#if EV_USE_PORT 2320#if EV_USE_PORT
1381 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2321 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1382#endif 2322#endif
1383#if EV_USE_KQUEUE 2323#if EV_USE_KQUEUE
1384 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2324 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1399#if EV_IDLE_ENABLE 2339#if EV_IDLE_ENABLE
1400 array_free (idle, [i]); 2340 array_free (idle, [i]);
1401#endif 2341#endif
1402 } 2342 }
1403 2343
1404 ev_free (anfds); anfdmax = 0; 2344 ev_free (anfds); anfds = 0; anfdmax = 0;
1405 2345
1406 /* have to use the microsoft-never-gets-it-right macro */ 2346 /* have to use the microsoft-never-gets-it-right macro */
2347 array_free (rfeed, EMPTY);
1407 array_free (fdchange, EMPTY); 2348 array_free (fdchange, EMPTY);
1408 array_free (timer, EMPTY); 2349 array_free (timer, EMPTY);
1409#if EV_PERIODIC_ENABLE 2350#if EV_PERIODIC_ENABLE
1410 array_free (periodic, EMPTY); 2351 array_free (periodic, EMPTY);
1411#endif 2352#endif
1412#if EV_FORK_ENABLE 2353#if EV_FORK_ENABLE
1413 array_free (fork, EMPTY); 2354 array_free (fork, EMPTY);
1414#endif 2355#endif
2356#if EV_CLEANUP_ENABLE
2357 array_free (cleanup, EMPTY);
2358#endif
1415 array_free (prepare, EMPTY); 2359 array_free (prepare, EMPTY);
1416 array_free (check, EMPTY); 2360 array_free (check, EMPTY);
1417#if EV_ASYNC_ENABLE 2361#if EV_ASYNC_ENABLE
1418 array_free (async, EMPTY); 2362 array_free (async, EMPTY);
1419#endif 2363#endif
1420 2364
1421 backend = 0; 2365 backend = 0;
2366
2367#if EV_MULTIPLICITY
2368 if (ev_is_default_loop (EV_A))
2369#endif
2370 ev_default_loop_ptr = 0;
2371#if EV_MULTIPLICITY
2372 else
2373 ev_free (EV_A);
2374#endif
1422} 2375}
1423 2376
1424#if EV_USE_INOTIFY 2377#if EV_USE_INOTIFY
1425void inline_size infy_fork (EV_P); 2378inline_size void infy_fork (EV_P);
1426#endif 2379#endif
1427 2380
1428void inline_size 2381inline_size void
1429loop_fork (EV_P) 2382loop_fork (EV_P)
1430{ 2383{
1431#if EV_USE_PORT 2384#if EV_USE_PORT
1432 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 2385 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1433#endif 2386#endif
… …
1439#endif 2392#endif
1440#if EV_USE_INOTIFY 2393#if EV_USE_INOTIFY
1441 infy_fork (EV_A); 2394 infy_fork (EV_A);
1442#endif 2395#endif
1443 2396
1444 if (ev_is_active (&pipeev)) 2397 if (ev_is_active (&pipe_w))
1445 { 2398 {
1446 /* this "locks" the handlers against writing to the pipe */ 2399 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1447 /* while we modify the fd vars */
1448 gotsig = 1;
1449#if EV_ASYNC_ENABLE
1450 gotasync = 1;
1451#endif
1452 2400
1453 ev_ref (EV_A); 2401 ev_ref (EV_A);
1454 ev_io_stop (EV_A_ &pipeev); 2402 ev_io_stop (EV_A_ &pipe_w);
1455 2403
1456#if EV_USE_EVENTFD 2404#if EV_USE_EVENTFD
1457 if (evfd >= 0) 2405 if (evfd >= 0)
1458 close (evfd); 2406 close (evfd);
1459#endif 2407#endif
1460 2408
1461 if (evpipe [0] >= 0) 2409 if (evpipe [0] >= 0)
1462 { 2410 {
1463 close (evpipe [0]); 2411 EV_WIN32_CLOSE_FD (evpipe [0]);
1464 close (evpipe [1]); 2412 EV_WIN32_CLOSE_FD (evpipe [1]);
1465 } 2413 }
1466 2414
2415#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1467 evpipe_init (EV_A); 2416 evpipe_init (EV_A);
1468 /* now iterate over everything, in case we missed something */ 2417 /* now iterate over everything, in case we missed something */
1469 pipecb (EV_A_ &pipeev, EV_READ); 2418 pipecb (EV_A_ &pipe_w, EV_READ);
2419#endif
1470 } 2420 }
1471 2421
1472 postfork = 0; 2422 postfork = 0;
1473} 2423}
1474 2424
1475#if EV_MULTIPLICITY 2425#if EV_MULTIPLICITY
1476 2426
1477struct ev_loop * 2427struct ev_loop * ecb_cold
1478ev_loop_new (unsigned int flags) 2428ev_loop_new (unsigned int flags)
1479{ 2429{
1480 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2430 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1481 2431
1482 memset (loop, 0, sizeof (struct ev_loop)); 2432 memset (EV_A, 0, sizeof (struct ev_loop));
1483
1484 loop_init (EV_A_ flags); 2433 loop_init (EV_A_ flags);
1485 2434
1486 if (ev_backend (EV_A)) 2435 if (ev_backend (EV_A))
1487 return loop; 2436 return EV_A;
1488 2437
2438 ev_free (EV_A);
1489 return 0; 2439 return 0;
1490} 2440}
1491 2441
1492void 2442#endif /* multiplicity */
1493ev_loop_destroy (EV_P)
1494{
1495 loop_destroy (EV_A);
1496 ev_free (loop);
1497}
1498
1499void
1500ev_loop_fork (EV_P)
1501{
1502 postfork = 1; /* must be in line with ev_default_fork */
1503}
1504 2443
1505#if EV_VERIFY 2444#if EV_VERIFY
1506static void noinline 2445static void noinline ecb_cold
1507verify_watcher (EV_P_ W w) 2446verify_watcher (EV_P_ W w)
1508{ 2447{
1509 assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2448 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1510 2449
1511 if (w->pending) 2450 if (w->pending)
1512 assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2451 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1513} 2452}
1514 2453
1515static void noinline 2454static void noinline ecb_cold
1516verify_heap (EV_P_ ANHE *heap, int N) 2455verify_heap (EV_P_ ANHE *heap, int N)
1517{ 2456{
1518 int i; 2457 int i;
1519 2458
1520 for (i = HEAP0; i < N + HEAP0; ++i) 2459 for (i = HEAP0; i < N + HEAP0; ++i)
1521 { 2460 {
1522 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); 2461 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1523 assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i]))); 2462 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1524 assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i])))); 2463 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1525 2464
1526 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2465 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1527 } 2466 }
1528} 2467}
1529 2468
1530static void noinline 2469static void noinline ecb_cold
1531array_verify (EV_P_ W *ws, int cnt) 2470array_verify (EV_P_ W *ws, int cnt)
1532{ 2471{
1533 while (cnt--) 2472 while (cnt--)
1534 { 2473 {
1535 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2474 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1536 verify_watcher (EV_A_ ws [cnt]); 2475 verify_watcher (EV_A_ ws [cnt]);
1537 } 2476 }
1538} 2477}
1539#endif 2478#endif
1540 2479
1541void 2480#if EV_FEATURE_API
2481void ecb_cold
1542ev_loop_verify (EV_P) 2482ev_verify (EV_P)
1543{ 2483{
1544#if EV_VERIFY 2484#if EV_VERIFY
1545 int i; 2485 int i;
1546 WL w; 2486 WL w;
1547 2487
1548 assert (activecnt >= -1); 2488 assert (activecnt >= -1);
1549 2489
1550 assert (fdchangemax >= fdchangecnt); 2490 assert (fdchangemax >= fdchangecnt);
1551 for (i = 0; i < fdchangecnt; ++i) 2491 for (i = 0; i < fdchangecnt; ++i)
1552 assert (("negative fd in fdchanges", fdchanges [i] >= 0)); 2492 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1553 2493
1554 assert (anfdmax >= 0); 2494 assert (anfdmax >= 0);
1555 for (i = 0; i < anfdmax; ++i) 2495 for (i = 0; i < anfdmax; ++i)
1556 for (w = anfds [i].head; w; w = w->next) 2496 for (w = anfds [i].head; w; w = w->next)
1557 { 2497 {
1558 verify_watcher (EV_A_ (W)w); 2498 verify_watcher (EV_A_ (W)w);
1559 assert (("inactive fd watcher on anfd list", ev_active (w) == 1)); 2499 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1560 assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2500 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1561 } 2501 }
1562 2502
1563 assert (timermax >= timercnt); 2503 assert (timermax >= timercnt);
1564 verify_heap (EV_A_ timers, timercnt); 2504 verify_heap (EV_A_ timers, timercnt);
1565 2505
… …
1581#if EV_FORK_ENABLE 2521#if EV_FORK_ENABLE
1582 assert (forkmax >= forkcnt); 2522 assert (forkmax >= forkcnt);
1583 array_verify (EV_A_ (W *)forks, forkcnt); 2523 array_verify (EV_A_ (W *)forks, forkcnt);
1584#endif 2524#endif
1585 2525
2526#if EV_CLEANUP_ENABLE
2527 assert (cleanupmax >= cleanupcnt);
2528 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2529#endif
2530
1586#if EV_ASYNC_ENABLE 2531#if EV_ASYNC_ENABLE
1587 assert (asyncmax >= asynccnt); 2532 assert (asyncmax >= asynccnt);
1588 array_verify (EV_A_ (W *)asyncs, asynccnt); 2533 array_verify (EV_A_ (W *)asyncs, asynccnt);
1589#endif 2534#endif
1590 2535
2536#if EV_PREPARE_ENABLE
1591 assert (preparemax >= preparecnt); 2537 assert (preparemax >= preparecnt);
1592 array_verify (EV_A_ (W *)prepares, preparecnt); 2538 array_verify (EV_A_ (W *)prepares, preparecnt);
2539#endif
1593 2540
2541#if EV_CHECK_ENABLE
1594 assert (checkmax >= checkcnt); 2542 assert (checkmax >= checkcnt);
1595 array_verify (EV_A_ (W *)checks, checkcnt); 2543 array_verify (EV_A_ (W *)checks, checkcnt);
2544#endif
1596 2545
1597# if 0 2546# if 0
2547#if EV_CHILD_ENABLE
1598 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2548 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1599 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2549 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2550#endif
1600# endif 2551# endif
1601#endif 2552#endif
1602} 2553}
1603 2554#endif
1604#endif /* multiplicity */
1605 2555
1606#if EV_MULTIPLICITY 2556#if EV_MULTIPLICITY
1607struct ev_loop * 2557struct ev_loop * ecb_cold
1608ev_default_loop_init (unsigned int flags)
1609#else 2558#else
1610int 2559int
2560#endif
1611ev_default_loop (unsigned int flags) 2561ev_default_loop (unsigned int flags)
1612#endif
1613{ 2562{
1614 if (!ev_default_loop_ptr) 2563 if (!ev_default_loop_ptr)
1615 { 2564 {
1616#if EV_MULTIPLICITY 2565#if EV_MULTIPLICITY
1617 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2566 EV_P = ev_default_loop_ptr = &default_loop_struct;
1618#else 2567#else
1619 ev_default_loop_ptr = 1; 2568 ev_default_loop_ptr = 1;
1620#endif 2569#endif
1621 2570
1622 loop_init (EV_A_ flags); 2571 loop_init (EV_A_ flags);
1623 2572
1624 if (ev_backend (EV_A)) 2573 if (ev_backend (EV_A))
1625 { 2574 {
1626#ifndef _WIN32 2575#if EV_CHILD_ENABLE
1627 ev_signal_init (&childev, childcb, SIGCHLD); 2576 ev_signal_init (&childev, childcb, SIGCHLD);
1628 ev_set_priority (&childev, EV_MAXPRI); 2577 ev_set_priority (&childev, EV_MAXPRI);
1629 ev_signal_start (EV_A_ &childev); 2578 ev_signal_start (EV_A_ &childev);
1630 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2579 ev_unref (EV_A); /* child watcher should not keep loop alive */
1631#endif 2580#endif
… …
1636 2585
1637 return ev_default_loop_ptr; 2586 return ev_default_loop_ptr;
1638} 2587}
1639 2588
1640void 2589void
1641ev_default_destroy (void)
1642{
1643#if EV_MULTIPLICITY
1644 struct ev_loop *loop = ev_default_loop_ptr;
1645#endif
1646
1647 ev_default_loop_ptr = 0;
1648
1649#ifndef _WIN32
1650 ev_ref (EV_A); /* child watcher */
1651 ev_signal_stop (EV_A_ &childev);
1652#endif
1653
1654 loop_destroy (EV_A);
1655}
1656
1657void
1658ev_default_fork (void)
1659{
1660#if EV_MULTIPLICITY
1661 struct ev_loop *loop = ev_default_loop_ptr;
1662#endif
1663
1664 ev_loop_fork (EV_A); 2590ev_loop_fork (EV_P)
2591{
2592 postfork = 1; /* must be in line with ev_default_fork */
1665} 2593}
1666 2594
1667/*****************************************************************************/ 2595/*****************************************************************************/
1668 2596
1669void 2597void
1670ev_invoke (EV_P_ void *w, int revents) 2598ev_invoke (EV_P_ void *w, int revents)
1671{ 2599{
1672 EV_CB_INVOKE ((W)w, revents); 2600 EV_CB_INVOKE ((W)w, revents);
1673} 2601}
1674 2602
1675void inline_speed 2603unsigned int
1676call_pending (EV_P) 2604ev_pending_count (EV_P)
2605{
2606 int pri;
2607 unsigned int count = 0;
2608
2609 for (pri = NUMPRI; pri--; )
2610 count += pendingcnt [pri];
2611
2612 return count;
2613}
2614
2615void noinline
2616ev_invoke_pending (EV_P)
1677{ 2617{
1678 int pri; 2618 int pri;
1679 2619
1680 for (pri = NUMPRI; pri--; ) 2620 for (pri = NUMPRI; pri--; )
1681 while (pendingcnt [pri]) 2621 while (pendingcnt [pri])
1682 { 2622 {
1683 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2623 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1684 2624
1685 if (expect_true (p->w))
1686 {
1687 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1688
1689 p->w->pending = 0; 2625 p->w->pending = 0;
1690 EV_CB_INVOKE (p->w, p->events); 2626 EV_CB_INVOKE (p->w, p->events);
1691 EV_FREQUENT_CHECK; 2627 EV_FREQUENT_CHECK;
1692 }
1693 } 2628 }
1694} 2629}
1695 2630
1696#if EV_IDLE_ENABLE 2631#if EV_IDLE_ENABLE
1697void inline_size 2632/* make idle watchers pending. this handles the "call-idle */
2633/* only when higher priorities are idle" logic */
2634inline_size void
1698idle_reify (EV_P) 2635idle_reify (EV_P)
1699{ 2636{
1700 if (expect_false (idleall)) 2637 if (expect_false (idleall))
1701 { 2638 {
1702 int pri; 2639 int pri;
… …
1714 } 2651 }
1715 } 2652 }
1716} 2653}
1717#endif 2654#endif
1718 2655
1719void inline_size 2656/* make timers pending */
2657inline_size void
1720timers_reify (EV_P) 2658timers_reify (EV_P)
1721{ 2659{
1722 EV_FREQUENT_CHECK; 2660 EV_FREQUENT_CHECK;
1723 2661
1724 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 2662 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1725 { 2663 {
1726 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2664 do
1727
1728 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1729
1730 /* first reschedule or stop timer */
1731 if (w->repeat)
1732 { 2665 {
2666 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2667
2668 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2669
2670 /* first reschedule or stop timer */
2671 if (w->repeat)
2672 {
1733 ev_at (w) += w->repeat; 2673 ev_at (w) += w->repeat;
1734 if (ev_at (w) < mn_now) 2674 if (ev_at (w) < mn_now)
1735 ev_at (w) = mn_now; 2675 ev_at (w) = mn_now;
1736 2676
1737 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2677 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1738 2678
1739 ANHE_at_cache (timers [HEAP0]); 2679 ANHE_at_cache (timers [HEAP0]);
1740 downheap (timers, timercnt, HEAP0); 2680 downheap (timers, timercnt, HEAP0);
2681 }
2682 else
2683 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2684
2685 EV_FREQUENT_CHECK;
2686 feed_reverse (EV_A_ (W)w);
1741 } 2687 }
1742 else 2688 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1743 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1744 2689
1745 EV_FREQUENT_CHECK; 2690 feed_reverse_done (EV_A_ EV_TIMER);
1746 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1747 } 2691 }
1748} 2692}
1749 2693
1750#if EV_PERIODIC_ENABLE 2694#if EV_PERIODIC_ENABLE
1751void inline_size 2695
2696static void noinline
2697periodic_recalc (EV_P_ ev_periodic *w)
2698{
2699 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2700 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2701
2702 /* the above almost always errs on the low side */
2703 while (at <= ev_rt_now)
2704 {
2705 ev_tstamp nat = at + w->interval;
2706
2707 /* when resolution fails us, we use ev_rt_now */
2708 if (expect_false (nat == at))
2709 {
2710 at = ev_rt_now;
2711 break;
2712 }
2713
2714 at = nat;
2715 }
2716
2717 ev_at (w) = at;
2718}
2719
2720/* make periodics pending */
2721inline_size void
1752periodics_reify (EV_P) 2722periodics_reify (EV_P)
1753{ 2723{
1754 EV_FREQUENT_CHECK; 2724 EV_FREQUENT_CHECK;
1755 2725
1756 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2726 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1757 { 2727 {
1758 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2728 int feed_count = 0;
1759 2729
1760 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2730 do
1761
1762 /* first reschedule or stop timer */
1763 if (w->reschedule_cb)
1764 { 2731 {
2732 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2733
2734 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2735
2736 /* first reschedule or stop timer */
2737 if (w->reschedule_cb)
2738 {
1765 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2739 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1766 2740
1767 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); 2741 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1768 2742
1769 ANHE_at_cache (periodics [HEAP0]); 2743 ANHE_at_cache (periodics [HEAP0]);
1770 downheap (periodics, periodiccnt, HEAP0); 2744 downheap (periodics, periodiccnt, HEAP0);
2745 }
2746 else if (w->interval)
2747 {
2748 periodic_recalc (EV_A_ w);
2749 ANHE_at_cache (periodics [HEAP0]);
2750 downheap (periodics, periodiccnt, HEAP0);
2751 }
2752 else
2753 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2754
2755 EV_FREQUENT_CHECK;
2756 feed_reverse (EV_A_ (W)w);
1771 } 2757 }
1772 else if (w->interval) 2758 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1773 {
1774 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1775 /* if next trigger time is not sufficiently in the future, put it there */
1776 /* this might happen because of floating point inexactness */
1777 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1778 {
1779 ev_at (w) += w->interval;
1780 2759
1781 /* if interval is unreasonably low we might still have a time in the past */
1782 /* so correct this. this will make the periodic very inexact, but the user */
1783 /* has effectively asked to get triggered more often than possible */
1784 if (ev_at (w) < ev_rt_now)
1785 ev_at (w) = ev_rt_now;
1786 }
1787
1788 ANHE_at_cache (periodics [HEAP0]);
1789 downheap (periodics, periodiccnt, HEAP0);
1790 }
1791 else
1792 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1793
1794 EV_FREQUENT_CHECK;
1795 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2760 feed_reverse_done (EV_A_ EV_PERIODIC);
1796 } 2761 }
1797} 2762}
1798 2763
2764/* simply recalculate all periodics */
2765/* TODO: maybe ensure that at least one event happens when jumping forward? */
1799static void noinline 2766static void noinline ecb_cold
1800periodics_reschedule (EV_P) 2767periodics_reschedule (EV_P)
1801{ 2768{
1802 int i; 2769 int i;
1803 2770
1804 /* adjust periodics after time jump */ 2771 /* adjust periodics after time jump */
… …
1807 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2774 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1808 2775
1809 if (w->reschedule_cb) 2776 if (w->reschedule_cb)
1810 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2777 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1811 else if (w->interval) 2778 else if (w->interval)
1812 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2779 periodic_recalc (EV_A_ w);
1813 2780
1814 ANHE_at_cache (periodics [i]); 2781 ANHE_at_cache (periodics [i]);
1815 } 2782 }
1816 2783
1817 reheap (periodics, periodiccnt); 2784 reheap (periodics, periodiccnt);
1818} 2785}
1819#endif 2786#endif
1820 2787
1821void inline_speed 2788/* adjust all timers by a given offset */
2789static void noinline ecb_cold
2790timers_reschedule (EV_P_ ev_tstamp adjust)
2791{
2792 int i;
2793
2794 for (i = 0; i < timercnt; ++i)
2795 {
2796 ANHE *he = timers + i + HEAP0;
2797 ANHE_w (*he)->at += adjust;
2798 ANHE_at_cache (*he);
2799 }
2800}
2801
2802/* fetch new monotonic and realtime times from the kernel */
2803/* also detect if there was a timejump, and act accordingly */
2804inline_speed void
1822time_update (EV_P_ ev_tstamp max_block) 2805time_update (EV_P_ ev_tstamp max_block)
1823{ 2806{
1824 int i;
1825
1826#if EV_USE_MONOTONIC 2807#if EV_USE_MONOTONIC
1827 if (expect_true (have_monotonic)) 2808 if (expect_true (have_monotonic))
1828 { 2809 {
2810 int i;
1829 ev_tstamp odiff = rtmn_diff; 2811 ev_tstamp odiff = rtmn_diff;
1830 2812
1831 mn_now = get_clock (); 2813 mn_now = get_clock ();
1832 2814
1833 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2815 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1849 * doesn't hurt either as we only do this on time-jumps or 2831 * doesn't hurt either as we only do this on time-jumps or
1850 * in the unlikely event of having been preempted here. 2832 * in the unlikely event of having been preempted here.
1851 */ 2833 */
1852 for (i = 4; --i; ) 2834 for (i = 4; --i; )
1853 { 2835 {
2836 ev_tstamp diff;
1854 rtmn_diff = ev_rt_now - mn_now; 2837 rtmn_diff = ev_rt_now - mn_now;
1855 2838
2839 diff = odiff - rtmn_diff;
2840
1856 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2841 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1857 return; /* all is well */ 2842 return; /* all is well */
1858 2843
1859 ev_rt_now = ev_time (); 2844 ev_rt_now = ev_time ();
1860 mn_now = get_clock (); 2845 mn_now = get_clock ();
1861 now_floor = mn_now; 2846 now_floor = mn_now;
1862 } 2847 }
1863 2848
2849 /* no timer adjustment, as the monotonic clock doesn't jump */
2850 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1864# if EV_PERIODIC_ENABLE 2851# if EV_PERIODIC_ENABLE
1865 periodics_reschedule (EV_A); 2852 periodics_reschedule (EV_A);
1866# endif 2853# endif
1867 /* no timer adjustment, as the monotonic clock doesn't jump */
1868 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1869 } 2854 }
1870 else 2855 else
1871#endif 2856#endif
1872 { 2857 {
1873 ev_rt_now = ev_time (); 2858 ev_rt_now = ev_time ();
1874 2859
1875 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2860 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1876 { 2861 {
2862 /* adjust timers. this is easy, as the offset is the same for all of them */
2863 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1877#if EV_PERIODIC_ENABLE 2864#if EV_PERIODIC_ENABLE
1878 periodics_reschedule (EV_A); 2865 periodics_reschedule (EV_A);
1879#endif 2866#endif
1880 /* adjust timers. this is easy, as the offset is the same for all of them */
1881 for (i = 0; i < timercnt; ++i)
1882 {
1883 ANHE *he = timers + i + HEAP0;
1884 ANHE_w (*he)->at += ev_rt_now - mn_now;
1885 ANHE_at_cache (*he);
1886 }
1887 } 2867 }
1888 2868
1889 mn_now = ev_rt_now; 2869 mn_now = ev_rt_now;
1890 } 2870 }
1891} 2871}
1892 2872
1893void 2873void
1894ev_ref (EV_P)
1895{
1896 ++activecnt;
1897}
1898
1899void
1900ev_unref (EV_P)
1901{
1902 --activecnt;
1903}
1904
1905void
1906ev_now_update (EV_P)
1907{
1908 time_update (EV_A_ 1e100);
1909}
1910
1911static int loop_done;
1912
1913void
1914ev_loop (EV_P_ int flags) 2874ev_run (EV_P_ int flags)
1915{ 2875{
2876#if EV_FEATURE_API
2877 ++loop_depth;
2878#endif
2879
2880 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2881
1916 loop_done = EVUNLOOP_CANCEL; 2882 loop_done = EVBREAK_CANCEL;
1917 2883
1918 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2884 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1919 2885
1920 do 2886 do
1921 { 2887 {
1922#if EV_VERIFY >= 2 2888#if EV_VERIFY >= 2
1923 ev_loop_verify (EV_A); 2889 ev_verify (EV_A);
1924#endif 2890#endif
1925 2891
1926#ifndef _WIN32 2892#ifndef _WIN32
1927 if (expect_false (curpid)) /* penalise the forking check even more */ 2893 if (expect_false (curpid)) /* penalise the forking check even more */
1928 if (expect_false (getpid () != curpid)) 2894 if (expect_false (getpid () != curpid))
… …
1936 /* we might have forked, so queue fork handlers */ 2902 /* we might have forked, so queue fork handlers */
1937 if (expect_false (postfork)) 2903 if (expect_false (postfork))
1938 if (forkcnt) 2904 if (forkcnt)
1939 { 2905 {
1940 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2906 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1941 call_pending (EV_A); 2907 EV_INVOKE_PENDING;
1942 } 2908 }
1943#endif 2909#endif
1944 2910
2911#if EV_PREPARE_ENABLE
1945 /* queue prepare watchers (and execute them) */ 2912 /* queue prepare watchers (and execute them) */
1946 if (expect_false (preparecnt)) 2913 if (expect_false (preparecnt))
1947 { 2914 {
1948 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2915 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1949 call_pending (EV_A); 2916 EV_INVOKE_PENDING;
1950 } 2917 }
2918#endif
1951 2919
1952 if (expect_false (!activecnt)) 2920 if (expect_false (loop_done))
1953 break; 2921 break;
1954 2922
1955 /* we might have forked, so reify kernel state if necessary */ 2923 /* we might have forked, so reify kernel state if necessary */
1956 if (expect_false (postfork)) 2924 if (expect_false (postfork))
1957 loop_fork (EV_A); 2925 loop_fork (EV_A);
… …
1962 /* calculate blocking time */ 2930 /* calculate blocking time */
1963 { 2931 {
1964 ev_tstamp waittime = 0.; 2932 ev_tstamp waittime = 0.;
1965 ev_tstamp sleeptime = 0.; 2933 ev_tstamp sleeptime = 0.;
1966 2934
2935 /* remember old timestamp for io_blocktime calculation */
2936 ev_tstamp prev_mn_now = mn_now;
2937
2938 /* update time to cancel out callback processing overhead */
2939 time_update (EV_A_ 1e100);
2940
2941 /* from now on, we want a pipe-wake-up */
2942 pipe_write_wanted = 1;
2943
2944 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
2945
1967 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2946 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
1968 { 2947 {
1969 /* update time to cancel out callback processing overhead */
1970 time_update (EV_A_ 1e100);
1971
1972 waittime = MAX_BLOCKTIME; 2948 waittime = MAX_BLOCKTIME;
1973 2949
1974 if (timercnt) 2950 if (timercnt)
1975 { 2951 {
1976 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2952 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
1977 if (waittime > to) waittime = to; 2953 if (waittime > to) waittime = to;
1978 } 2954 }
1979 2955
1980#if EV_PERIODIC_ENABLE 2956#if EV_PERIODIC_ENABLE
1981 if (periodiccnt) 2957 if (periodiccnt)
1982 { 2958 {
1983 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2959 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
1984 if (waittime > to) waittime = to; 2960 if (waittime > to) waittime = to;
1985 } 2961 }
1986#endif 2962#endif
1987 2963
2964 /* don't let timeouts decrease the waittime below timeout_blocktime */
1988 if (expect_false (waittime < timeout_blocktime)) 2965 if (expect_false (waittime < timeout_blocktime))
1989 waittime = timeout_blocktime; 2966 waittime = timeout_blocktime;
1990 2967
1991 sleeptime = waittime - backend_fudge; 2968 /* at this point, we NEED to wait, so we have to ensure */
2969 /* to pass a minimum nonzero value to the backend */
2970 if (expect_false (waittime < backend_mintime))
2971 waittime = backend_mintime;
1992 2972
2973 /* extra check because io_blocktime is commonly 0 */
1993 if (expect_true (sleeptime > io_blocktime)) 2974 if (expect_false (io_blocktime))
1994 sleeptime = io_blocktime;
1995
1996 if (sleeptime)
1997 { 2975 {
2976 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2977
2978 if (sleeptime > waittime - backend_mintime)
2979 sleeptime = waittime - backend_mintime;
2980
2981 if (expect_true (sleeptime > 0.))
2982 {
1998 ev_sleep (sleeptime); 2983 ev_sleep (sleeptime);
1999 waittime -= sleeptime; 2984 waittime -= sleeptime;
2985 }
2000 } 2986 }
2001 } 2987 }
2002 2988
2989#if EV_FEATURE_API
2003 ++loop_count; 2990 ++loop_count;
2991#endif
2992 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2004 backend_poll (EV_A_ waittime); 2993 backend_poll (EV_A_ waittime);
2994 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2995
2996 pipe_write_wanted = 0; /* just an optimsiation, no fence needed */
2997
2998 if (pipe_write_skipped)
2999 {
3000 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3001 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3002 }
3003
2005 3004
2006 /* update ev_rt_now, do magic */ 3005 /* update ev_rt_now, do magic */
2007 time_update (EV_A_ waittime + sleeptime); 3006 time_update (EV_A_ waittime + sleeptime);
2008 } 3007 }
2009 3008
… …
2016#if EV_IDLE_ENABLE 3015#if EV_IDLE_ENABLE
2017 /* queue idle watchers unless other events are pending */ 3016 /* queue idle watchers unless other events are pending */
2018 idle_reify (EV_A); 3017 idle_reify (EV_A);
2019#endif 3018#endif
2020 3019
3020#if EV_CHECK_ENABLE
2021 /* queue check watchers, to be executed first */ 3021 /* queue check watchers, to be executed first */
2022 if (expect_false (checkcnt)) 3022 if (expect_false (checkcnt))
2023 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3023 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3024#endif
2024 3025
2025 call_pending (EV_A); 3026 EV_INVOKE_PENDING;
2026 } 3027 }
2027 while (expect_true ( 3028 while (expect_true (
2028 activecnt 3029 activecnt
2029 && !loop_done 3030 && !loop_done
2030 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3031 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2031 )); 3032 ));
2032 3033
2033 if (loop_done == EVUNLOOP_ONE) 3034 if (loop_done == EVBREAK_ONE)
2034 loop_done = EVUNLOOP_CANCEL; 3035 loop_done = EVBREAK_CANCEL;
3036
3037#if EV_FEATURE_API
3038 --loop_depth;
3039#endif
2035} 3040}
2036 3041
2037void 3042void
2038ev_unloop (EV_P_ int how) 3043ev_break (EV_P_ int how)
2039{ 3044{
2040 loop_done = how; 3045 loop_done = how;
2041} 3046}
2042 3047
3048void
3049ev_ref (EV_P)
3050{
3051 ++activecnt;
3052}
3053
3054void
3055ev_unref (EV_P)
3056{
3057 --activecnt;
3058}
3059
3060void
3061ev_now_update (EV_P)
3062{
3063 time_update (EV_A_ 1e100);
3064}
3065
3066void
3067ev_suspend (EV_P)
3068{
3069 ev_now_update (EV_A);
3070}
3071
3072void
3073ev_resume (EV_P)
3074{
3075 ev_tstamp mn_prev = mn_now;
3076
3077 ev_now_update (EV_A);
3078 timers_reschedule (EV_A_ mn_now - mn_prev);
3079#if EV_PERIODIC_ENABLE
3080 /* TODO: really do this? */
3081 periodics_reschedule (EV_A);
3082#endif
3083}
3084
2043/*****************************************************************************/ 3085/*****************************************************************************/
3086/* singly-linked list management, used when the expected list length is short */
2044 3087
2045void inline_size 3088inline_size void
2046wlist_add (WL *head, WL elem) 3089wlist_add (WL *head, WL elem)
2047{ 3090{
2048 elem->next = *head; 3091 elem->next = *head;
2049 *head = elem; 3092 *head = elem;
2050} 3093}
2051 3094
2052void inline_size 3095inline_size void
2053wlist_del (WL *head, WL elem) 3096wlist_del (WL *head, WL elem)
2054{ 3097{
2055 while (*head) 3098 while (*head)
2056 { 3099 {
2057 if (*head == elem) 3100 if (expect_true (*head == elem))
2058 { 3101 {
2059 *head = elem->next; 3102 *head = elem->next;
2060 return; 3103 break;
2061 } 3104 }
2062 3105
2063 head = &(*head)->next; 3106 head = &(*head)->next;
2064 } 3107 }
2065} 3108}
2066 3109
2067void inline_speed 3110/* internal, faster, version of ev_clear_pending */
3111inline_speed void
2068clear_pending (EV_P_ W w) 3112clear_pending (EV_P_ W w)
2069{ 3113{
2070 if (w->pending) 3114 if (w->pending)
2071 { 3115 {
2072 pendings [ABSPRI (w)][w->pending - 1].w = 0; 3116 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2073 w->pending = 0; 3117 w->pending = 0;
2074 } 3118 }
2075} 3119}
2076 3120
2077int 3121int
… …
2081 int pending = w_->pending; 3125 int pending = w_->pending;
2082 3126
2083 if (expect_true (pending)) 3127 if (expect_true (pending))
2084 { 3128 {
2085 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 3129 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3130 p->w = (W)&pending_w;
2086 w_->pending = 0; 3131 w_->pending = 0;
2087 p->w = 0;
2088 return p->events; 3132 return p->events;
2089 } 3133 }
2090 else 3134 else
2091 return 0; 3135 return 0;
2092} 3136}
2093 3137
2094void inline_size 3138inline_size void
2095pri_adjust (EV_P_ W w) 3139pri_adjust (EV_P_ W w)
2096{ 3140{
2097 int pri = w->priority; 3141 int pri = ev_priority (w);
2098 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 3142 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2099 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 3143 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2100 w->priority = pri; 3144 ev_set_priority (w, pri);
2101} 3145}
2102 3146
2103void inline_speed 3147inline_speed void
2104ev_start (EV_P_ W w, int active) 3148ev_start (EV_P_ W w, int active)
2105{ 3149{
2106 pri_adjust (EV_A_ w); 3150 pri_adjust (EV_A_ w);
2107 w->active = active; 3151 w->active = active;
2108 ev_ref (EV_A); 3152 ev_ref (EV_A);
2109} 3153}
2110 3154
2111void inline_size 3155inline_size void
2112ev_stop (EV_P_ W w) 3156ev_stop (EV_P_ W w)
2113{ 3157{
2114 ev_unref (EV_A); 3158 ev_unref (EV_A);
2115 w->active = 0; 3159 w->active = 0;
2116} 3160}
… …
2123 int fd = w->fd; 3167 int fd = w->fd;
2124 3168
2125 if (expect_false (ev_is_active (w))) 3169 if (expect_false (ev_is_active (w)))
2126 return; 3170 return;
2127 3171
2128 assert (("ev_io_start called with negative fd", fd >= 0)); 3172 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2129 assert (("ev_io start called with illegal event mask", !(w->events & ~(EV_IOFDSET | EV_READ | EV_WRITE)))); 3173 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2130 3174
2131 EV_FREQUENT_CHECK; 3175 EV_FREQUENT_CHECK;
2132 3176
2133 ev_start (EV_A_ (W)w, 1); 3177 ev_start (EV_A_ (W)w, 1);
2134 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3178 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2135 wlist_add (&anfds[fd].head, (WL)w); 3179 wlist_add (&anfds[fd].head, (WL)w);
2136 3180
2137 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 3181 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2138 w->events &= ~EV_IOFDSET; 3182 w->events &= ~EV__IOFDSET;
2139 3183
2140 EV_FREQUENT_CHECK; 3184 EV_FREQUENT_CHECK;
2141} 3185}
2142 3186
2143void noinline 3187void noinline
… …
2145{ 3189{
2146 clear_pending (EV_A_ (W)w); 3190 clear_pending (EV_A_ (W)w);
2147 if (expect_false (!ev_is_active (w))) 3191 if (expect_false (!ev_is_active (w)))
2148 return; 3192 return;
2149 3193
2150 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 3194 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2151 3195
2152 EV_FREQUENT_CHECK; 3196 EV_FREQUENT_CHECK;
2153 3197
2154 wlist_del (&anfds[w->fd].head, (WL)w); 3198 wlist_del (&anfds[w->fd].head, (WL)w);
2155 ev_stop (EV_A_ (W)w); 3199 ev_stop (EV_A_ (W)w);
2156 3200
2157 fd_change (EV_A_ w->fd, 1); 3201 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2158 3202
2159 EV_FREQUENT_CHECK; 3203 EV_FREQUENT_CHECK;
2160} 3204}
2161 3205
2162void noinline 3206void noinline
… …
2165 if (expect_false (ev_is_active (w))) 3209 if (expect_false (ev_is_active (w)))
2166 return; 3210 return;
2167 3211
2168 ev_at (w) += mn_now; 3212 ev_at (w) += mn_now;
2169 3213
2170 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 3214 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2171 3215
2172 EV_FREQUENT_CHECK; 3216 EV_FREQUENT_CHECK;
2173 3217
2174 ++timercnt; 3218 ++timercnt;
2175 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 3219 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
… …
2178 ANHE_at_cache (timers [ev_active (w)]); 3222 ANHE_at_cache (timers [ev_active (w)]);
2179 upheap (timers, ev_active (w)); 3223 upheap (timers, ev_active (w));
2180 3224
2181 EV_FREQUENT_CHECK; 3225 EV_FREQUENT_CHECK;
2182 3226
2183 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3227 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2184} 3228}
2185 3229
2186void noinline 3230void noinline
2187ev_timer_stop (EV_P_ ev_timer *w) 3231ev_timer_stop (EV_P_ ev_timer *w)
2188{ 3232{
… …
2193 EV_FREQUENT_CHECK; 3237 EV_FREQUENT_CHECK;
2194 3238
2195 { 3239 {
2196 int active = ev_active (w); 3240 int active = ev_active (w);
2197 3241
2198 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 3242 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2199 3243
2200 --timercnt; 3244 --timercnt;
2201 3245
2202 if (expect_true (active < timercnt + HEAP0)) 3246 if (expect_true (active < timercnt + HEAP0))
2203 { 3247 {
2204 timers [active] = timers [timercnt + HEAP0]; 3248 timers [active] = timers [timercnt + HEAP0];
2205 adjustheap (timers, timercnt, active); 3249 adjustheap (timers, timercnt, active);
2206 } 3250 }
2207 } 3251 }
2208 3252
2209 EV_FREQUENT_CHECK;
2210
2211 ev_at (w) -= mn_now; 3253 ev_at (w) -= mn_now;
2212 3254
2213 ev_stop (EV_A_ (W)w); 3255 ev_stop (EV_A_ (W)w);
3256
3257 EV_FREQUENT_CHECK;
2214} 3258}
2215 3259
2216void noinline 3260void noinline
2217ev_timer_again (EV_P_ ev_timer *w) 3261ev_timer_again (EV_P_ ev_timer *w)
2218{ 3262{
… …
2236 } 3280 }
2237 3281
2238 EV_FREQUENT_CHECK; 3282 EV_FREQUENT_CHECK;
2239} 3283}
2240 3284
3285ev_tstamp
3286ev_timer_remaining (EV_P_ ev_timer *w)
3287{
3288 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3289}
3290
2241#if EV_PERIODIC_ENABLE 3291#if EV_PERIODIC_ENABLE
2242void noinline 3292void noinline
2243ev_periodic_start (EV_P_ ev_periodic *w) 3293ev_periodic_start (EV_P_ ev_periodic *w)
2244{ 3294{
2245 if (expect_false (ev_is_active (w))) 3295 if (expect_false (ev_is_active (w)))
… …
2247 3297
2248 if (w->reschedule_cb) 3298 if (w->reschedule_cb)
2249 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3299 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2250 else if (w->interval) 3300 else if (w->interval)
2251 { 3301 {
2252 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 3302 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2253 /* this formula differs from the one in periodic_reify because we do not always round up */ 3303 periodic_recalc (EV_A_ w);
2254 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2255 } 3304 }
2256 else 3305 else
2257 ev_at (w) = w->offset; 3306 ev_at (w) = w->offset;
2258 3307
2259 EV_FREQUENT_CHECK; 3308 EV_FREQUENT_CHECK;
… …
2265 ANHE_at_cache (periodics [ev_active (w)]); 3314 ANHE_at_cache (periodics [ev_active (w)]);
2266 upheap (periodics, ev_active (w)); 3315 upheap (periodics, ev_active (w));
2267 3316
2268 EV_FREQUENT_CHECK; 3317 EV_FREQUENT_CHECK;
2269 3318
2270 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3319 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2271} 3320}
2272 3321
2273void noinline 3322void noinline
2274ev_periodic_stop (EV_P_ ev_periodic *w) 3323ev_periodic_stop (EV_P_ ev_periodic *w)
2275{ 3324{
… …
2280 EV_FREQUENT_CHECK; 3329 EV_FREQUENT_CHECK;
2281 3330
2282 { 3331 {
2283 int active = ev_active (w); 3332 int active = ev_active (w);
2284 3333
2285 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 3334 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2286 3335
2287 --periodiccnt; 3336 --periodiccnt;
2288 3337
2289 if (expect_true (active < periodiccnt + HEAP0)) 3338 if (expect_true (active < periodiccnt + HEAP0))
2290 { 3339 {
2291 periodics [active] = periodics [periodiccnt + HEAP0]; 3340 periodics [active] = periodics [periodiccnt + HEAP0];
2292 adjustheap (periodics, periodiccnt, active); 3341 adjustheap (periodics, periodiccnt, active);
2293 } 3342 }
2294 } 3343 }
2295 3344
2296 EV_FREQUENT_CHECK;
2297
2298 ev_stop (EV_A_ (W)w); 3345 ev_stop (EV_A_ (W)w);
3346
3347 EV_FREQUENT_CHECK;
2299} 3348}
2300 3349
2301void noinline 3350void noinline
2302ev_periodic_again (EV_P_ ev_periodic *w) 3351ev_periodic_again (EV_P_ ev_periodic *w)
2303{ 3352{
… …
2309 3358
2310#ifndef SA_RESTART 3359#ifndef SA_RESTART
2311# define SA_RESTART 0 3360# define SA_RESTART 0
2312#endif 3361#endif
2313 3362
3363#if EV_SIGNAL_ENABLE
3364
2314void noinline 3365void noinline
2315ev_signal_start (EV_P_ ev_signal *w) 3366ev_signal_start (EV_P_ ev_signal *w)
2316{ 3367{
2317#if EV_MULTIPLICITY
2318 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2319#endif
2320 if (expect_false (ev_is_active (w))) 3368 if (expect_false (ev_is_active (w)))
2321 return; 3369 return;
2322 3370
2323 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 3371 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2324 3372
2325 evpipe_init (EV_A); 3373#if EV_MULTIPLICITY
3374 assert (("libev: a signal must not be attached to two different loops",
3375 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2326 3376
2327 EV_FREQUENT_CHECK; 3377 signals [w->signum - 1].loop = EV_A;
3378#endif
2328 3379
3380 EV_FREQUENT_CHECK;
3381
3382#if EV_USE_SIGNALFD
3383 if (sigfd == -2)
2329 { 3384 {
2330#ifndef _WIN32 3385 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2331 sigset_t full, prev; 3386 if (sigfd < 0 && errno == EINVAL)
2332 sigfillset (&full); 3387 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2333 sigprocmask (SIG_SETMASK, &full, &prev);
2334#endif
2335 3388
2336 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 3389 if (sigfd >= 0)
3390 {
3391 fd_intern (sigfd); /* doing it twice will not hurt */
2337 3392
2338#ifndef _WIN32 3393 sigemptyset (&sigfd_set);
2339 sigprocmask (SIG_SETMASK, &prev, 0); 3394
2340#endif 3395 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3396 ev_set_priority (&sigfd_w, EV_MAXPRI);
3397 ev_io_start (EV_A_ &sigfd_w);
3398 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3399 }
2341 } 3400 }
3401
3402 if (sigfd >= 0)
3403 {
3404 /* TODO: check .head */
3405 sigaddset (&sigfd_set, w->signum);
3406 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3407
3408 signalfd (sigfd, &sigfd_set, 0);
3409 }
3410#endif
2342 3411
2343 ev_start (EV_A_ (W)w, 1); 3412 ev_start (EV_A_ (W)w, 1);
2344 wlist_add (&signals [w->signum - 1].head, (WL)w); 3413 wlist_add (&signals [w->signum - 1].head, (WL)w);
2345 3414
2346 if (!((WL)w)->next) 3415 if (!((WL)w)->next)
3416# if EV_USE_SIGNALFD
3417 if (sigfd < 0) /*TODO*/
3418# endif
2347 { 3419 {
2348#if _WIN32 3420# ifdef _WIN32
3421 evpipe_init (EV_A);
3422
2349 signal (w->signum, ev_sighandler); 3423 signal (w->signum, ev_sighandler);
2350#else 3424# else
2351 struct sigaction sa; 3425 struct sigaction sa;
3426
3427 evpipe_init (EV_A);
3428
2352 sa.sa_handler = ev_sighandler; 3429 sa.sa_handler = ev_sighandler;
2353 sigfillset (&sa.sa_mask); 3430 sigfillset (&sa.sa_mask);
2354 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3431 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2355 sigaction (w->signum, &sa, 0); 3432 sigaction (w->signum, &sa, 0);
3433
3434 if (origflags & EVFLAG_NOSIGMASK)
3435 {
3436 sigemptyset (&sa.sa_mask);
3437 sigaddset (&sa.sa_mask, w->signum);
3438 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3439 }
2356#endif 3440#endif
2357 } 3441 }
2358 3442
2359 EV_FREQUENT_CHECK; 3443 EV_FREQUENT_CHECK;
2360} 3444}
2361 3445
2362void noinline 3446void noinline
… …
2370 3454
2371 wlist_del (&signals [w->signum - 1].head, (WL)w); 3455 wlist_del (&signals [w->signum - 1].head, (WL)w);
2372 ev_stop (EV_A_ (W)w); 3456 ev_stop (EV_A_ (W)w);
2373 3457
2374 if (!signals [w->signum - 1].head) 3458 if (!signals [w->signum - 1].head)
3459 {
3460#if EV_MULTIPLICITY
3461 signals [w->signum - 1].loop = 0; /* unattach from signal */
3462#endif
3463#if EV_USE_SIGNALFD
3464 if (sigfd >= 0)
3465 {
3466 sigset_t ss;
3467
3468 sigemptyset (&ss);
3469 sigaddset (&ss, w->signum);
3470 sigdelset (&sigfd_set, w->signum);
3471
3472 signalfd (sigfd, &sigfd_set, 0);
3473 sigprocmask (SIG_UNBLOCK, &ss, 0);
3474 }
3475 else
3476#endif
2375 signal (w->signum, SIG_DFL); 3477 signal (w->signum, SIG_DFL);
3478 }
2376 3479
2377 EV_FREQUENT_CHECK; 3480 EV_FREQUENT_CHECK;
2378} 3481}
3482
3483#endif
3484
3485#if EV_CHILD_ENABLE
2379 3486
2380void 3487void
2381ev_child_start (EV_P_ ev_child *w) 3488ev_child_start (EV_P_ ev_child *w)
2382{ 3489{
2383#if EV_MULTIPLICITY 3490#if EV_MULTIPLICITY
2384 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3491 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2385#endif 3492#endif
2386 if (expect_false (ev_is_active (w))) 3493 if (expect_false (ev_is_active (w)))
2387 return; 3494 return;
2388 3495
2389 EV_FREQUENT_CHECK; 3496 EV_FREQUENT_CHECK;
2390 3497
2391 ev_start (EV_A_ (W)w, 1); 3498 ev_start (EV_A_ (W)w, 1);
2392 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3499 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2393 3500
2394 EV_FREQUENT_CHECK; 3501 EV_FREQUENT_CHECK;
2395} 3502}
2396 3503
2397void 3504void
… …
2401 if (expect_false (!ev_is_active (w))) 3508 if (expect_false (!ev_is_active (w)))
2402 return; 3509 return;
2403 3510
2404 EV_FREQUENT_CHECK; 3511 EV_FREQUENT_CHECK;
2405 3512
2406 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3513 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2407 ev_stop (EV_A_ (W)w); 3514 ev_stop (EV_A_ (W)w);
2408 3515
2409 EV_FREQUENT_CHECK; 3516 EV_FREQUENT_CHECK;
2410} 3517}
3518
3519#endif
2411 3520
2412#if EV_STAT_ENABLE 3521#if EV_STAT_ENABLE
2413 3522
2414# ifdef _WIN32 3523# ifdef _WIN32
2415# undef lstat 3524# undef lstat
2416# define lstat(a,b) _stati64 (a,b) 3525# define lstat(a,b) _stati64 (a,b)
2417# endif 3526# endif
2418 3527
2419#define DEF_STAT_INTERVAL 5.0074891 3528#define DEF_STAT_INTERVAL 5.0074891
3529#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2420#define MIN_STAT_INTERVAL 0.1074891 3530#define MIN_STAT_INTERVAL 0.1074891
2421 3531
2422static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3532static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2423 3533
2424#if EV_USE_INOTIFY 3534#if EV_USE_INOTIFY
2425# define EV_INOTIFY_BUFSIZE 8192 3535
3536/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3537# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2426 3538
2427static void noinline 3539static void noinline
2428infy_add (EV_P_ ev_stat *w) 3540infy_add (EV_P_ ev_stat *w)
2429{ 3541{
2430 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); 3542 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);
2431 3543
2432 if (w->wd < 0) 3544 if (w->wd >= 0)
3545 {
3546 struct statfs sfs;
3547
3548 /* now local changes will be tracked by inotify, but remote changes won't */
3549 /* unless the filesystem is known to be local, we therefore still poll */
3550 /* also do poll on <2.6.25, but with normal frequency */
3551
3552 if (!fs_2625)
3553 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3554 else if (!statfs (w->path, &sfs)
3555 && (sfs.f_type == 0x1373 /* devfs */
3556 || sfs.f_type == 0xEF53 /* ext2/3 */
3557 || sfs.f_type == 0x3153464a /* jfs */
3558 || sfs.f_type == 0x52654973 /* reiser3 */
3559 || sfs.f_type == 0x01021994 /* tempfs */
3560 || sfs.f_type == 0x58465342 /* xfs */))
3561 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3562 else
3563 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2433 { 3564 }
2434 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 3565 else
3566 {
3567 /* can't use inotify, continue to stat */
3568 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2435 3569
2436 /* monitor some parent directory for speedup hints */ 3570 /* if path is not there, monitor some parent directory for speedup hints */
2437 /* note that exceeding the hardcoded limit is not a correctness issue, */ 3571 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2438 /* but an efficiency issue only */ 3572 /* but an efficiency issue only */
2439 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3573 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2440 { 3574 {
2441 char path [4096]; 3575 char path [4096];
2442 strcpy (path, w->path); 3576 strcpy (path, w->path);
… …
2446 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 3580 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2447 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 3581 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2448 3582
2449 char *pend = strrchr (path, '/'); 3583 char *pend = strrchr (path, '/');
2450 3584
2451 if (!pend) 3585 if (!pend || pend == path)
2452 break; /* whoops, no '/', complain to your admin */ 3586 break;
2453 3587
2454 *pend = 0; 3588 *pend = 0;
2455 w->wd = inotify_add_watch (fs_fd, path, mask); 3589 w->wd = inotify_add_watch (fs_fd, path, mask);
2456 } 3590 }
2457 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3591 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2458 } 3592 }
2459 } 3593 }
2460 else
2461 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2462 3594
2463 if (w->wd >= 0) 3595 if (w->wd >= 0)
2464 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3596 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
3597
3598 /* now re-arm timer, if required */
3599 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3600 ev_timer_again (EV_A_ &w->timer);
3601 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2465} 3602}
2466 3603
2467static void noinline 3604static void noinline
2468infy_del (EV_P_ ev_stat *w) 3605infy_del (EV_P_ ev_stat *w)
2469{ 3606{
… …
2472 3609
2473 if (wd < 0) 3610 if (wd < 0)
2474 return; 3611 return;
2475 3612
2476 w->wd = -2; 3613 w->wd = -2;
2477 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3614 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2478 wlist_del (&fs_hash [slot].head, (WL)w); 3615 wlist_del (&fs_hash [slot].head, (WL)w);
2479 3616
2480 /* remove this watcher, if others are watching it, they will rearm */ 3617 /* remove this watcher, if others are watching it, they will rearm */
2481 inotify_rm_watch (fs_fd, wd); 3618 inotify_rm_watch (fs_fd, wd);
2482} 3619}
… …
2484static void noinline 3621static void noinline
2485infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3622infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2486{ 3623{
2487 if (slot < 0) 3624 if (slot < 0)
2488 /* overflow, need to check for all hash slots */ 3625 /* overflow, need to check for all hash slots */
2489 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3626 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2490 infy_wd (EV_A_ slot, wd, ev); 3627 infy_wd (EV_A_ slot, wd, ev);
2491 else 3628 else
2492 { 3629 {
2493 WL w_; 3630 WL w_;
2494 3631
2495 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3632 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2496 { 3633 {
2497 ev_stat *w = (ev_stat *)w_; 3634 ev_stat *w = (ev_stat *)w_;
2498 w_ = w_->next; /* lets us remove this watcher and all before it */ 3635 w_ = w_->next; /* lets us remove this watcher and all before it */
2499 3636
2500 if (w->wd == wd || wd == -1) 3637 if (w->wd == wd || wd == -1)
2501 { 3638 {
2502 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3639 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2503 { 3640 {
3641 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2504 w->wd = -1; 3642 w->wd = -1;
2505 infy_add (EV_A_ w); /* re-add, no matter what */ 3643 infy_add (EV_A_ w); /* re-add, no matter what */
2506 } 3644 }
2507 3645
2508 stat_timer_cb (EV_A_ &w->timer, 0); 3646 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2513 3651
2514static void 3652static void
2515infy_cb (EV_P_ ev_io *w, int revents) 3653infy_cb (EV_P_ ev_io *w, int revents)
2516{ 3654{
2517 char buf [EV_INOTIFY_BUFSIZE]; 3655 char buf [EV_INOTIFY_BUFSIZE];
2518 struct inotify_event *ev = (struct inotify_event *)buf;
2519 int ofs; 3656 int ofs;
2520 int len = read (fs_fd, buf, sizeof (buf)); 3657 int len = read (fs_fd, buf, sizeof (buf));
2521 3658
2522 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3659 for (ofs = 0; ofs < len; )
3660 {
3661 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2523 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3662 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3663 ofs += sizeof (struct inotify_event) + ev->len;
3664 }
2524} 3665}
2525 3666
2526void inline_size 3667inline_size void ecb_cold
2527infy_init (EV_P) 3668ev_check_2625 (EV_P)
2528{ 3669{
2529 if (fs_fd != -2)
2530 return;
2531
2532 /* kernels < 2.6.25 are borked 3670 /* kernels < 2.6.25 are borked
2533 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3671 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2534 */ 3672 */
2535 { 3673 if (ev_linux_version () < 0x020619)
2536 struct utsname buf; 3674 return;
2537 int major, minor, micro;
2538 3675
3676 fs_2625 = 1;
3677}
3678
3679inline_size int
3680infy_newfd (void)
3681{
3682#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3683 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3684 if (fd >= 0)
3685 return fd;
3686#endif
3687 return inotify_init ();
3688}
3689
3690inline_size void
3691infy_init (EV_P)
3692{
3693 if (fs_fd != -2)
3694 return;
3695
2539 fs_fd = -1; 3696 fs_fd = -1;
2540 3697
2541 if (uname (&buf)) 3698 ev_check_2625 (EV_A);
2542 return;
2543 3699
2544 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2545 return;
2546
2547 if (major < 2
2548 || (major == 2 && minor < 6)
2549 || (major == 2 && minor == 6 && micro < 25))
2550 return;
2551 }
2552
2553 fs_fd = inotify_init (); 3700 fs_fd = infy_newfd ();
2554 3701
2555 if (fs_fd >= 0) 3702 if (fs_fd >= 0)
2556 { 3703 {
3704 fd_intern (fs_fd);
2557 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3705 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2558 ev_set_priority (&fs_w, EV_MAXPRI); 3706 ev_set_priority (&fs_w, EV_MAXPRI);
2559 ev_io_start (EV_A_ &fs_w); 3707 ev_io_start (EV_A_ &fs_w);
3708 ev_unref (EV_A);
2560 } 3709 }
2561} 3710}
2562 3711
2563void inline_size 3712inline_size void
2564infy_fork (EV_P) 3713infy_fork (EV_P)
2565{ 3714{
2566 int slot; 3715 int slot;
2567 3716
2568 if (fs_fd < 0) 3717 if (fs_fd < 0)
2569 return; 3718 return;
2570 3719
3720 ev_ref (EV_A);
3721 ev_io_stop (EV_A_ &fs_w);
2571 close (fs_fd); 3722 close (fs_fd);
2572 fs_fd = inotify_init (); 3723 fs_fd = infy_newfd ();
2573 3724
3725 if (fs_fd >= 0)
3726 {
3727 fd_intern (fs_fd);
3728 ev_io_set (&fs_w, fs_fd, EV_READ);
3729 ev_io_start (EV_A_ &fs_w);
3730 ev_unref (EV_A);
3731 }
3732
2574 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3733 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2575 { 3734 {
2576 WL w_ = fs_hash [slot].head; 3735 WL w_ = fs_hash [slot].head;
2577 fs_hash [slot].head = 0; 3736 fs_hash [slot].head = 0;
2578 3737
2579 while (w_) 3738 while (w_)
… …
2584 w->wd = -1; 3743 w->wd = -1;
2585 3744
2586 if (fs_fd >= 0) 3745 if (fs_fd >= 0)
2587 infy_add (EV_A_ w); /* re-add, no matter what */ 3746 infy_add (EV_A_ w); /* re-add, no matter what */
2588 else 3747 else
3748 {
3749 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3750 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2589 ev_timer_start (EV_A_ &w->timer); 3751 ev_timer_again (EV_A_ &w->timer);
3752 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3753 }
2590 } 3754 }
2591 } 3755 }
2592} 3756}
2593 3757
2594#endif 3758#endif
… …
2611static void noinline 3775static void noinline
2612stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3776stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2613{ 3777{
2614 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3778 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2615 3779
2616 /* we copy this here each the time so that */ 3780 ev_statdata prev = w->attr;
2617 /* prev has the old value when the callback gets invoked */
2618 w->prev = w->attr;
2619 ev_stat_stat (EV_A_ w); 3781 ev_stat_stat (EV_A_ w);
2620 3782
2621 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3783 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2622 if ( 3784 if (
2623 w->prev.st_dev != w->attr.st_dev 3785 prev.st_dev != w->attr.st_dev
2624 || w->prev.st_ino != w->attr.st_ino 3786 || prev.st_ino != w->attr.st_ino
2625 || w->prev.st_mode != w->attr.st_mode 3787 || prev.st_mode != w->attr.st_mode
2626 || w->prev.st_nlink != w->attr.st_nlink 3788 || prev.st_nlink != w->attr.st_nlink
2627 || w->prev.st_uid != w->attr.st_uid 3789 || prev.st_uid != w->attr.st_uid
2628 || w->prev.st_gid != w->attr.st_gid 3790 || prev.st_gid != w->attr.st_gid
2629 || w->prev.st_rdev != w->attr.st_rdev 3791 || prev.st_rdev != w->attr.st_rdev
2630 || w->prev.st_size != w->attr.st_size 3792 || prev.st_size != w->attr.st_size
2631 || w->prev.st_atime != w->attr.st_atime 3793 || prev.st_atime != w->attr.st_atime
2632 || w->prev.st_mtime != w->attr.st_mtime 3794 || prev.st_mtime != w->attr.st_mtime
2633 || w->prev.st_ctime != w->attr.st_ctime 3795 || prev.st_ctime != w->attr.st_ctime
2634 ) { 3796 ) {
3797 /* we only update w->prev on actual differences */
3798 /* in case we test more often than invoke the callback, */
3799 /* to ensure that prev is always different to attr */
3800 w->prev = prev;
3801
2635 #if EV_USE_INOTIFY 3802 #if EV_USE_INOTIFY
2636 if (fs_fd >= 0) 3803 if (fs_fd >= 0)
2637 { 3804 {
2638 infy_del (EV_A_ w); 3805 infy_del (EV_A_ w);
2639 infy_add (EV_A_ w); 3806 infy_add (EV_A_ w);
… …
2649ev_stat_start (EV_P_ ev_stat *w) 3816ev_stat_start (EV_P_ ev_stat *w)
2650{ 3817{
2651 if (expect_false (ev_is_active (w))) 3818 if (expect_false (ev_is_active (w)))
2652 return; 3819 return;
2653 3820
2654 /* since we use memcmp, we need to clear any padding data etc. */
2655 memset (&w->prev, 0, sizeof (ev_statdata));
2656 memset (&w->attr, 0, sizeof (ev_statdata));
2657
2658 ev_stat_stat (EV_A_ w); 3821 ev_stat_stat (EV_A_ w);
2659 3822
3823 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2660 if (w->interval < MIN_STAT_INTERVAL) 3824 w->interval = MIN_STAT_INTERVAL;
2661 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2662 3825
2663 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3826 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2664 ev_set_priority (&w->timer, ev_priority (w)); 3827 ev_set_priority (&w->timer, ev_priority (w));
2665 3828
2666#if EV_USE_INOTIFY 3829#if EV_USE_INOTIFY
2667 infy_init (EV_A); 3830 infy_init (EV_A);
2668 3831
2669 if (fs_fd >= 0) 3832 if (fs_fd >= 0)
2670 infy_add (EV_A_ w); 3833 infy_add (EV_A_ w);
2671 else 3834 else
2672#endif 3835#endif
3836 {
2673 ev_timer_start (EV_A_ &w->timer); 3837 ev_timer_again (EV_A_ &w->timer);
3838 ev_unref (EV_A);
3839 }
2674 3840
2675 ev_start (EV_A_ (W)w, 1); 3841 ev_start (EV_A_ (W)w, 1);
2676 3842
2677 EV_FREQUENT_CHECK; 3843 EV_FREQUENT_CHECK;
2678} 3844}
… …
2687 EV_FREQUENT_CHECK; 3853 EV_FREQUENT_CHECK;
2688 3854
2689#if EV_USE_INOTIFY 3855#if EV_USE_INOTIFY
2690 infy_del (EV_A_ w); 3856 infy_del (EV_A_ w);
2691#endif 3857#endif
3858
3859 if (ev_is_active (&w->timer))
3860 {
3861 ev_ref (EV_A);
2692 ev_timer_stop (EV_A_ &w->timer); 3862 ev_timer_stop (EV_A_ &w->timer);
3863 }
2693 3864
2694 ev_stop (EV_A_ (W)w); 3865 ev_stop (EV_A_ (W)w);
2695 3866
2696 EV_FREQUENT_CHECK; 3867 EV_FREQUENT_CHECK;
2697} 3868}
… …
2742 3913
2743 EV_FREQUENT_CHECK; 3914 EV_FREQUENT_CHECK;
2744} 3915}
2745#endif 3916#endif
2746 3917
3918#if EV_PREPARE_ENABLE
2747void 3919void
2748ev_prepare_start (EV_P_ ev_prepare *w) 3920ev_prepare_start (EV_P_ ev_prepare *w)
2749{ 3921{
2750 if (expect_false (ev_is_active (w))) 3922 if (expect_false (ev_is_active (w)))
2751 return; 3923 return;
… …
2777 3949
2778 ev_stop (EV_A_ (W)w); 3950 ev_stop (EV_A_ (W)w);
2779 3951
2780 EV_FREQUENT_CHECK; 3952 EV_FREQUENT_CHECK;
2781} 3953}
3954#endif
2782 3955
3956#if EV_CHECK_ENABLE
2783void 3957void
2784ev_check_start (EV_P_ ev_check *w) 3958ev_check_start (EV_P_ ev_check *w)
2785{ 3959{
2786 if (expect_false (ev_is_active (w))) 3960 if (expect_false (ev_is_active (w)))
2787 return; 3961 return;
… …
2813 3987
2814 ev_stop (EV_A_ (W)w); 3988 ev_stop (EV_A_ (W)w);
2815 3989
2816 EV_FREQUENT_CHECK; 3990 EV_FREQUENT_CHECK;
2817} 3991}
3992#endif
2818 3993
2819#if EV_EMBED_ENABLE 3994#if EV_EMBED_ENABLE
2820void noinline 3995void noinline
2821ev_embed_sweep (EV_P_ ev_embed *w) 3996ev_embed_sweep (EV_P_ ev_embed *w)
2822{ 3997{
2823 ev_loop (w->other, EVLOOP_NONBLOCK); 3998 ev_run (w->other, EVRUN_NOWAIT);
2824} 3999}
2825 4000
2826static void 4001static void
2827embed_io_cb (EV_P_ ev_io *io, int revents) 4002embed_io_cb (EV_P_ ev_io *io, int revents)
2828{ 4003{
2829 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4004 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2830 4005
2831 if (ev_cb (w)) 4006 if (ev_cb (w))
2832 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4007 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2833 else 4008 else
2834 ev_loop (w->other, EVLOOP_NONBLOCK); 4009 ev_run (w->other, EVRUN_NOWAIT);
2835} 4010}
2836 4011
2837static void 4012static void
2838embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4013embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2839{ 4014{
2840 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4015 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2841 4016
2842 { 4017 {
2843 struct ev_loop *loop = w->other; 4018 EV_P = w->other;
2844 4019
2845 while (fdchangecnt) 4020 while (fdchangecnt)
2846 { 4021 {
2847 fd_reify (EV_A); 4022 fd_reify (EV_A);
2848 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4023 ev_run (EV_A_ EVRUN_NOWAIT);
2849 } 4024 }
2850 } 4025 }
2851} 4026}
2852 4027
2853static void 4028static void
2854embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 4029embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
2855{ 4030{
2856 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 4031 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2857 4032
4033 ev_embed_stop (EV_A_ w);
4034
2858 { 4035 {
2859 struct ev_loop *loop = w->other; 4036 EV_P = w->other;
2860 4037
2861 ev_loop_fork (EV_A); 4038 ev_loop_fork (EV_A);
4039 ev_run (EV_A_ EVRUN_NOWAIT);
2862 } 4040 }
4041
4042 ev_embed_start (EV_A_ w);
2863} 4043}
2864 4044
2865#if 0 4045#if 0
2866static void 4046static void
2867embed_idle_cb (EV_P_ ev_idle *idle, int revents) 4047embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2875{ 4055{
2876 if (expect_false (ev_is_active (w))) 4056 if (expect_false (ev_is_active (w)))
2877 return; 4057 return;
2878 4058
2879 { 4059 {
2880 struct ev_loop *loop = w->other; 4060 EV_P = w->other;
2881 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4061 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2882 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4062 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2883 } 4063 }
2884 4064
2885 EV_FREQUENT_CHECK; 4065 EV_FREQUENT_CHECK;
2886 4066
… …
2912 4092
2913 ev_io_stop (EV_A_ &w->io); 4093 ev_io_stop (EV_A_ &w->io);
2914 ev_prepare_stop (EV_A_ &w->prepare); 4094 ev_prepare_stop (EV_A_ &w->prepare);
2915 ev_fork_stop (EV_A_ &w->fork); 4095 ev_fork_stop (EV_A_ &w->fork);
2916 4096
4097 ev_stop (EV_A_ (W)w);
4098
2917 EV_FREQUENT_CHECK; 4099 EV_FREQUENT_CHECK;
2918} 4100}
2919#endif 4101#endif
2920 4102
2921#if EV_FORK_ENABLE 4103#if EV_FORK_ENABLE
… …
2954 4136
2955 EV_FREQUENT_CHECK; 4137 EV_FREQUENT_CHECK;
2956} 4138}
2957#endif 4139#endif
2958 4140
4141#if EV_CLEANUP_ENABLE
4142void
4143ev_cleanup_start (EV_P_ ev_cleanup *w)
4144{
4145 if (expect_false (ev_is_active (w)))
4146 return;
4147
4148 EV_FREQUENT_CHECK;
4149
4150 ev_start (EV_A_ (W)w, ++cleanupcnt);
4151 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4152 cleanups [cleanupcnt - 1] = w;
4153
4154 /* cleanup watchers should never keep a refcount on the loop */
4155 ev_unref (EV_A);
4156 EV_FREQUENT_CHECK;
4157}
4158
4159void
4160ev_cleanup_stop (EV_P_ ev_cleanup *w)
4161{
4162 clear_pending (EV_A_ (W)w);
4163 if (expect_false (!ev_is_active (w)))
4164 return;
4165
4166 EV_FREQUENT_CHECK;
4167 ev_ref (EV_A);
4168
4169 {
4170 int active = ev_active (w);
4171
4172 cleanups [active - 1] = cleanups [--cleanupcnt];
4173 ev_active (cleanups [active - 1]) = active;
4174 }
4175
4176 ev_stop (EV_A_ (W)w);
4177
4178 EV_FREQUENT_CHECK;
4179}
4180#endif
4181
2959#if EV_ASYNC_ENABLE 4182#if EV_ASYNC_ENABLE
2960void 4183void
2961ev_async_start (EV_P_ ev_async *w) 4184ev_async_start (EV_P_ ev_async *w)
2962{ 4185{
2963 if (expect_false (ev_is_active (w))) 4186 if (expect_false (ev_is_active (w)))
2964 return; 4187 return;
2965 4188
4189 w->sent = 0;
4190
2966 evpipe_init (EV_A); 4191 evpipe_init (EV_A);
2967 4192
2968 EV_FREQUENT_CHECK; 4193 EV_FREQUENT_CHECK;
2969 4194
2970 ev_start (EV_A_ (W)w, ++asynccnt); 4195 ev_start (EV_A_ (W)w, ++asynccnt);
… …
2997 4222
2998void 4223void
2999ev_async_send (EV_P_ ev_async *w) 4224ev_async_send (EV_P_ ev_async *w)
3000{ 4225{
3001 w->sent = 1; 4226 w->sent = 1;
3002 evpipe_write (EV_A_ &gotasync); 4227 evpipe_write (EV_A_ &async_pending);
3003} 4228}
3004#endif 4229#endif
3005 4230
3006/*****************************************************************************/ 4231/*****************************************************************************/
3007 4232
… …
3047{ 4272{
3048 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4273 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3049 4274
3050 if (expect_false (!once)) 4275 if (expect_false (!once))
3051 { 4276 {
3052 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4277 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3053 return; 4278 return;
3054 } 4279 }
3055 4280
3056 once->cb = cb; 4281 once->cb = cb;
3057 once->arg = arg; 4282 once->arg = arg;
… …
3069 ev_timer_set (&once->to, timeout, 0.); 4294 ev_timer_set (&once->to, timeout, 0.);
3070 ev_timer_start (EV_A_ &once->to); 4295 ev_timer_start (EV_A_ &once->to);
3071 } 4296 }
3072} 4297}
3073 4298
4299/*****************************************************************************/
4300
4301#if EV_WALK_ENABLE
4302void ecb_cold
4303ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
4304{
4305 int i, j;
4306 ev_watcher_list *wl, *wn;
4307
4308 if (types & (EV_IO | EV_EMBED))
4309 for (i = 0; i < anfdmax; ++i)
4310 for (wl = anfds [i].head; wl; )
4311 {
4312 wn = wl->next;
4313
4314#if EV_EMBED_ENABLE
4315 if (ev_cb ((ev_io *)wl) == embed_io_cb)
4316 {
4317 if (types & EV_EMBED)
4318 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
4319 }
4320 else
4321#endif
4322#if EV_USE_INOTIFY
4323 if (ev_cb ((ev_io *)wl) == infy_cb)
4324 ;
4325 else
4326#endif
4327 if ((ev_io *)wl != &pipe_w)
4328 if (types & EV_IO)
4329 cb (EV_A_ EV_IO, wl);
4330
4331 wl = wn;
4332 }
4333
4334 if (types & (EV_TIMER | EV_STAT))
4335 for (i = timercnt + HEAP0; i-- > HEAP0; )
4336#if EV_STAT_ENABLE
4337 /*TODO: timer is not always active*/
4338 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
4339 {
4340 if (types & EV_STAT)
4341 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
4342 }
4343 else
4344#endif
4345 if (types & EV_TIMER)
4346 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
4347
4348#if EV_PERIODIC_ENABLE
4349 if (types & EV_PERIODIC)
4350 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
4351 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
4352#endif
4353
4354#if EV_IDLE_ENABLE
4355 if (types & EV_IDLE)
4356 for (j = NUMPRI; j--; )
4357 for (i = idlecnt [j]; i--; )
4358 cb (EV_A_ EV_IDLE, idles [j][i]);
4359#endif
4360
4361#if EV_FORK_ENABLE
4362 if (types & EV_FORK)
4363 for (i = forkcnt; i--; )
4364 if (ev_cb (forks [i]) != embed_fork_cb)
4365 cb (EV_A_ EV_FORK, forks [i]);
4366#endif
4367
4368#if EV_ASYNC_ENABLE
4369 if (types & EV_ASYNC)
4370 for (i = asynccnt; i--; )
4371 cb (EV_A_ EV_ASYNC, asyncs [i]);
4372#endif
4373
4374#if EV_PREPARE_ENABLE
4375 if (types & EV_PREPARE)
4376 for (i = preparecnt; i--; )
4377# if EV_EMBED_ENABLE
4378 if (ev_cb (prepares [i]) != embed_prepare_cb)
4379# endif
4380 cb (EV_A_ EV_PREPARE, prepares [i]);
4381#endif
4382
4383#if EV_CHECK_ENABLE
4384 if (types & EV_CHECK)
4385 for (i = checkcnt; i--; )
4386 cb (EV_A_ EV_CHECK, checks [i]);
4387#endif
4388
4389#if EV_SIGNAL_ENABLE
4390 if (types & EV_SIGNAL)
4391 for (i = 0; i < EV_NSIG - 1; ++i)
4392 for (wl = signals [i].head; wl; )
4393 {
4394 wn = wl->next;
4395 cb (EV_A_ EV_SIGNAL, wl);
4396 wl = wn;
4397 }
4398#endif
4399
4400#if EV_CHILD_ENABLE
4401 if (types & EV_CHILD)
4402 for (i = (EV_PID_HASHSIZE); i--; )
4403 for (wl = childs [i]; wl; )
4404 {
4405 wn = wl->next;
4406 cb (EV_A_ EV_CHILD, wl);
4407 wl = wn;
4408 }
4409#endif
4410/* EV_STAT 0x00001000 /* stat data changed */
4411/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
4412}
4413#endif
4414
3074#if EV_MULTIPLICITY 4415#if EV_MULTIPLICITY
3075 #include "ev_wrap.h" 4416 #include "ev_wrap.h"
3076#endif 4417#endif
3077 4418
3078#ifdef __cplusplus
3079}
3080#endif
3081

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