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Comparing libev/ev.c (file contents):
Revision 1.251 by root, Thu May 22 03:42:34 2008 UTC vs.
Revision 1.398 by root, Sun Sep 25 21:27:35 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
150#else 184#else
151# include "ev.h" 185# include "ev.h"
152#endif 186#endif
187
188EV_CPP(extern "C" {)
153 189
154#ifndef _WIN32 190#ifndef _WIN32
155# include <sys/time.h> 191# include <sys/time.h>
156# include <sys/wait.h> 192# include <sys/wait.h>
157# include <unistd.h> 193# include <unistd.h>
158#else 194#else
195# include <io.h>
159# define WIN32_LEAN_AND_MEAN 196# define WIN32_LEAN_AND_MEAN
160# include <windows.h> 197# include <windows.h>
161# ifndef EV_SELECT_IS_WINSOCKET 198# ifndef EV_SELECT_IS_WINSOCKET
162# define EV_SELECT_IS_WINSOCKET 1 199# define EV_SELECT_IS_WINSOCKET 1
163# endif 200# endif
201# undef EV_AVOID_STDIO
164#endif 202#endif
203
204/* OS X, in its infinite idiocy, actually HARDCODES
205 * a limit of 1024 into their select. Where people have brains,
206 * OS X engineers apparently have a vacuum. Or maybe they were
207 * ordered to have a vacuum, or they do anything for money.
208 * This might help. Or not.
209 */
210#define _DARWIN_UNLIMITED_SELECT 1
165 211
166/* this block tries to deduce configuration from header-defined symbols and defaults */ 212/* this block tries to deduce configuration from header-defined symbols and defaults */
167 213
214/* try to deduce the maximum number of signals on this platform */
215#if defined (EV_NSIG)
216/* use what's provided */
217#elif defined (NSIG)
218# define EV_NSIG (NSIG)
219#elif defined(_NSIG)
220# define EV_NSIG (_NSIG)
221#elif defined (SIGMAX)
222# define EV_NSIG (SIGMAX+1)
223#elif defined (SIG_MAX)
224# define EV_NSIG (SIG_MAX+1)
225#elif defined (_SIG_MAX)
226# define EV_NSIG (_SIG_MAX+1)
227#elif defined (MAXSIG)
228# define EV_NSIG (MAXSIG+1)
229#elif defined (MAX_SIG)
230# define EV_NSIG (MAX_SIG+1)
231#elif defined (SIGARRAYSIZE)
232# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
233#elif defined (_sys_nsig)
234# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
235#else
236# error "unable to find value for NSIG, please report"
237/* to make it compile regardless, just remove the above line, */
238/* but consider reporting it, too! :) */
239# define EV_NSIG 65
240#endif
241
242#ifndef EV_USE_FLOOR
243# define EV_USE_FLOOR 0
244#endif
245
246#ifndef EV_USE_CLOCK_SYSCALL
247# if __linux && __GLIBC__ >= 2
248# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
249# else
250# define EV_USE_CLOCK_SYSCALL 0
251# endif
252#endif
253
168#ifndef EV_USE_MONOTONIC 254#ifndef EV_USE_MONOTONIC
255# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
256# define EV_USE_MONOTONIC EV_FEATURE_OS
257# else
169# define EV_USE_MONOTONIC 0 258# define EV_USE_MONOTONIC 0
259# endif
170#endif 260#endif
171 261
172#ifndef EV_USE_REALTIME 262#ifndef EV_USE_REALTIME
173# define EV_USE_REALTIME 0 263# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
174#endif 264#endif
175 265
176#ifndef EV_USE_NANOSLEEP 266#ifndef EV_USE_NANOSLEEP
267# if _POSIX_C_SOURCE >= 199309L
268# define EV_USE_NANOSLEEP EV_FEATURE_OS
269# else
177# define EV_USE_NANOSLEEP 0 270# define EV_USE_NANOSLEEP 0
271# endif
178#endif 272#endif
179 273
180#ifndef EV_USE_SELECT 274#ifndef EV_USE_SELECT
181# define EV_USE_SELECT 1 275# define EV_USE_SELECT EV_FEATURE_BACKENDS
182#endif 276#endif
183 277
184#ifndef EV_USE_POLL 278#ifndef EV_USE_POLL
185# ifdef _WIN32 279# ifdef _WIN32
186# define EV_USE_POLL 0 280# define EV_USE_POLL 0
187# else 281# else
188# define EV_USE_POLL 1 282# define EV_USE_POLL EV_FEATURE_BACKENDS
189# endif 283# endif
190#endif 284#endif
191 285
192#ifndef EV_USE_EPOLL 286#ifndef EV_USE_EPOLL
193# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 287# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
194# define EV_USE_EPOLL 1 288# define EV_USE_EPOLL EV_FEATURE_BACKENDS
195# else 289# else
196# define EV_USE_EPOLL 0 290# define EV_USE_EPOLL 0
197# endif 291# endif
198#endif 292#endif
199 293
… …
205# define EV_USE_PORT 0 299# define EV_USE_PORT 0
206#endif 300#endif
207 301
208#ifndef EV_USE_INOTIFY 302#ifndef EV_USE_INOTIFY
209# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 303# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
210# define EV_USE_INOTIFY 1 304# define EV_USE_INOTIFY EV_FEATURE_OS
211# else 305# else
212# define EV_USE_INOTIFY 0 306# define EV_USE_INOTIFY 0
213# endif 307# endif
214#endif 308#endif
215 309
216#ifndef EV_PID_HASHSIZE 310#ifndef EV_PID_HASHSIZE
217# if EV_MINIMAL 311# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
218# define EV_PID_HASHSIZE 1
219# else
220# define EV_PID_HASHSIZE 16
221# endif
222#endif 312#endif
223 313
224#ifndef EV_INOTIFY_HASHSIZE 314#ifndef EV_INOTIFY_HASHSIZE
225# if EV_MINIMAL 315# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
226# define EV_INOTIFY_HASHSIZE 1
227# else
228# define EV_INOTIFY_HASHSIZE 16
229# endif
230#endif 316#endif
231 317
232#ifndef EV_USE_EVENTFD 318#ifndef EV_USE_EVENTFD
233# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 319# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
234# define EV_USE_EVENTFD 1 320# define EV_USE_EVENTFD EV_FEATURE_OS
235# else 321# else
236# define EV_USE_EVENTFD 0 322# define EV_USE_EVENTFD 0
323# endif
324#endif
325
326#ifndef EV_USE_SIGNALFD
327# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
328# define EV_USE_SIGNALFD EV_FEATURE_OS
329# else
330# define EV_USE_SIGNALFD 0
237# endif 331# endif
238#endif 332#endif
239 333
240#if 0 /* debugging */ 334#if 0 /* debugging */
241# define EV_VERIFY 3 335# define EV_VERIFY 3
242# define EV_USE_4HEAP 1 336# define EV_USE_4HEAP 1
243# define EV_HEAP_CACHE_AT 1 337# define EV_HEAP_CACHE_AT 1
244#endif 338#endif
245 339
246#ifndef EV_VERIFY 340#ifndef EV_VERIFY
247# define EV_VERIFY !EV_MINIMAL 341# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
248#endif 342#endif
249 343
250#ifndef EV_USE_4HEAP 344#ifndef EV_USE_4HEAP
251# define EV_USE_4HEAP !EV_MINIMAL 345# define EV_USE_4HEAP EV_FEATURE_DATA
252#endif 346#endif
253 347
254#ifndef EV_HEAP_CACHE_AT 348#ifndef EV_HEAP_CACHE_AT
255# define EV_HEAP_CACHE_AT !EV_MINIMAL 349# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
350#endif
351
352/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
353/* which makes programs even slower. might work on other unices, too. */
354#if EV_USE_CLOCK_SYSCALL
355# include <syscall.h>
356# ifdef SYS_clock_gettime
357# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
358# undef EV_USE_MONOTONIC
359# define EV_USE_MONOTONIC 1
360# else
361# undef EV_USE_CLOCK_SYSCALL
362# define EV_USE_CLOCK_SYSCALL 0
363# endif
256#endif 364#endif
257 365
258/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 366/* this block fixes any misconfiguration where we know we run into trouble otherwise */
367
368#ifdef _AIX
369/* AIX has a completely broken poll.h header */
370# undef EV_USE_POLL
371# define EV_USE_POLL 0
372#endif
259 373
260#ifndef CLOCK_MONOTONIC 374#ifndef CLOCK_MONOTONIC
261# undef EV_USE_MONOTONIC 375# undef EV_USE_MONOTONIC
262# define EV_USE_MONOTONIC 0 376# define EV_USE_MONOTONIC 0
263#endif 377#endif
… …
271# undef EV_USE_INOTIFY 385# undef EV_USE_INOTIFY
272# define EV_USE_INOTIFY 0 386# define EV_USE_INOTIFY 0
273#endif 387#endif
274 388
275#if !EV_USE_NANOSLEEP 389#if !EV_USE_NANOSLEEP
276# ifndef _WIN32 390/* hp-ux has it in sys/time.h, which we unconditionally include above */
391# if !defined(_WIN32) && !defined(__hpux)
277# include <sys/select.h> 392# include <sys/select.h>
278# endif 393# endif
279#endif 394#endif
280 395
281#if EV_USE_INOTIFY 396#if EV_USE_INOTIFY
397# include <sys/statfs.h>
282# include <sys/inotify.h> 398# include <sys/inotify.h>
399/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
400# ifndef IN_DONT_FOLLOW
401# undef EV_USE_INOTIFY
402# define EV_USE_INOTIFY 0
403# endif
283#endif 404#endif
284 405
285#if EV_SELECT_IS_WINSOCKET 406#if EV_SELECT_IS_WINSOCKET
286# include <winsock.h> 407# include <winsock.h>
287#endif 408#endif
288 409
289#if EV_USE_EVENTFD 410#if EV_USE_EVENTFD
290/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 411/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
291# include <stdint.h> 412# include <stdint.h>
292# ifdef __cplusplus 413# ifndef EFD_NONBLOCK
293extern "C" { 414# define EFD_NONBLOCK O_NONBLOCK
294# endif 415# endif
295int eventfd (unsigned int initval, int flags); 416# ifndef EFD_CLOEXEC
296# ifdef __cplusplus 417# ifdef O_CLOEXEC
297} 418# define EFD_CLOEXEC O_CLOEXEC
419# else
420# define EFD_CLOEXEC 02000000
421# endif
298# endif 422# endif
423EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
424#endif
425
426#if EV_USE_SIGNALFD
427/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
428# include <stdint.h>
429# ifndef SFD_NONBLOCK
430# define SFD_NONBLOCK O_NONBLOCK
431# endif
432# ifndef SFD_CLOEXEC
433# ifdef O_CLOEXEC
434# define SFD_CLOEXEC O_CLOEXEC
435# else
436# define SFD_CLOEXEC 02000000
437# endif
438# endif
439EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
440
441struct signalfd_siginfo
442{
443 uint32_t ssi_signo;
444 char pad[128 - sizeof (uint32_t)];
445};
299#endif 446#endif
300 447
301/**/ 448/**/
302 449
303#if EV_VERIFY >= 3 450#if EV_VERIFY >= 3
304# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 451# define EV_FREQUENT_CHECK ev_verify (EV_A)
305#else 452#else
306# define EV_FREQUENT_CHECK do { } while (0) 453# define EV_FREQUENT_CHECK do { } while (0)
307#endif 454#endif
308 455
309/* 456/*
310 * This is used to avoid floating point rounding problems. 457 * This is used to work around floating point rounding problems.
311 * It is added to ev_rt_now when scheduling periodics
312 * to ensure progress, time-wise, even when rounding
313 * errors are against us.
314 * This value is good at least till the year 4000. 458 * This value is good at least till the year 4000.
315 * Better solutions welcome.
316 */ 459 */
317#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 460#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
461/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
318 462
319#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 463#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
320#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 464#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
321/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
322 465
466#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
467#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
468
469/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
470/* ECB.H BEGIN */
471/*
472 * libecb - http://software.schmorp.de/pkg/libecb
473 *
474 * Copyright (©) 2009-2011 Marc Alexander Lehmann <libecb@schmorp.de>
475 * Copyright (©) 2011 Emanuele Giaquinta
476 * All rights reserved.
477 *
478 * Redistribution and use in source and binary forms, with or without modifica-
479 * tion, are permitted provided that the following conditions are met:
480 *
481 * 1. Redistributions of source code must retain the above copyright notice,
482 * this list of conditions and the following disclaimer.
483 *
484 * 2. Redistributions in binary form must reproduce the above copyright
485 * notice, this list of conditions and the following disclaimer in the
486 * documentation and/or other materials provided with the distribution.
487 *
488 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
489 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
490 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
491 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
492 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
493 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
494 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
495 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
496 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
497 * OF THE POSSIBILITY OF SUCH DAMAGE.
498 */
499
500#ifndef ECB_H
501#define ECB_H
502
503#ifdef _WIN32
504 typedef signed char int8_t;
505 typedef unsigned char uint8_t;
506 typedef signed short int16_t;
507 typedef unsigned short uint16_t;
508 typedef signed int int32_t;
509 typedef unsigned int uint32_t;
323#if __GNUC__ >= 4 510 #if __GNUC__
324# define expect(expr,value) __builtin_expect ((expr),(value)) 511 typedef signed long long int64_t;
325# define noinline __attribute__ ((noinline)) 512 typedef unsigned long long uint64_t;
513 #else /* _MSC_VER || __BORLANDC__ */
514 typedef signed __int64 int64_t;
515 typedef unsigned __int64 uint64_t;
516 #endif
326#else 517#else
327# define expect(expr,value) (expr) 518 #include <inttypes.h>
328# define noinline
329# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
330# define inline
331# endif 519#endif
520
521/* many compilers define _GNUC_ to some versions but then only implement
522 * what their idiot authors think are the "more important" extensions,
523 * causing enormous grief in return for some better fake benchmark numbers.
524 * or so.
525 * we try to detect these and simply assume they are not gcc - if they have
526 * an issue with that they should have done it right in the first place.
527 */
528#ifndef ECB_GCC_VERSION
529 #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__)
530 #define ECB_GCC_VERSION(major,minor) 0
531 #else
532 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
332#endif 533 #endif
534#endif
333 535
536/*****************************************************************************/
537
538/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
539/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
540
541#if ECB_NO_THREADS || ECB_NO_SMP
542 #define ECB_MEMORY_FENCE do { } while (0)
543#endif
544
545#ifndef ECB_MEMORY_FENCE
546 #if ECB_GCC_VERSION(2,5) || defined(__INTEL_COMPILER) || defined(__clang__)
547 #if __i386__
548 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
549 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */
550 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */
551 #elif __amd64
552 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
553 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
554 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */
555 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
556 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
557 #elif defined(__ARM_ARCH_6__ ) || defined(__ARM_ARCH_6J__ ) \
558 || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6ZK__)
559 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
560 #elif defined(__ARM_ARCH_7__ ) || defined(__ARM_ARCH_7A__ ) \
561 || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7R__ )
562 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
563 #endif
564 #endif
565#endif
566
567#ifndef ECB_MEMORY_FENCE
568 #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER) || defined(__clang__)
569 #define ECB_MEMORY_FENCE __sync_synchronize ()
570 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */
571 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */
572 #elif _MSC_VER >= 1400 /* VC++ 2005 */
573 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
574 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
575 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
576 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
577 #elif defined(_WIN32)
578 #include <WinNT.h>
579 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
580 #endif
581#endif
582
583#ifndef ECB_MEMORY_FENCE
584 #if !ECB_AVOID_PTHREADS
585 /*
586 * if you get undefined symbol references to pthread_mutex_lock,
587 * or failure to find pthread.h, then you should implement
588 * the ECB_MEMORY_FENCE operations for your cpu/compiler
589 * OR provide pthread.h and link against the posix thread library
590 * of your system.
591 */
592 #include <pthread.h>
593 #define ECB_NEEDS_PTHREADS 1
594 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
595
596 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
597 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
598 #endif
599#endif
600
601#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE)
602 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
603#endif
604
605#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE)
606 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
607#endif
608
609/*****************************************************************************/
610
611#define ECB_C99 (__STDC_VERSION__ >= 199901L)
612
613#if __cplusplus
614 #define ecb_inline static inline
615#elif ECB_GCC_VERSION(2,5)
616 #define ecb_inline static __inline__
617#elif ECB_C99
618 #define ecb_inline static inline
619#else
620 #define ecb_inline static
621#endif
622
623#if ECB_GCC_VERSION(3,3)
624 #define ecb_restrict __restrict__
625#elif ECB_C99
626 #define ecb_restrict restrict
627#else
628 #define ecb_restrict
629#endif
630
631typedef int ecb_bool;
632
633#define ECB_CONCAT_(a, b) a ## b
634#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
635#define ECB_STRINGIFY_(a) # a
636#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
637
638#define ecb_function_ ecb_inline
639
640#if ECB_GCC_VERSION(3,1)
641 #define ecb_attribute(attrlist) __attribute__(attrlist)
642 #define ecb_is_constant(expr) __builtin_constant_p (expr)
643 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
644 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
645#else
646 #define ecb_attribute(attrlist)
647 #define ecb_is_constant(expr) 0
648 #define ecb_expect(expr,value) (expr)
649 #define ecb_prefetch(addr,rw,locality)
650#endif
651
652/* no emulation for ecb_decltype */
653#if ECB_GCC_VERSION(4,5)
654 #define ecb_decltype(x) __decltype(x)
655#elif ECB_GCC_VERSION(3,0)
656 #define ecb_decltype(x) __typeof(x)
657#endif
658
659#define ecb_noinline ecb_attribute ((__noinline__))
660#define ecb_noreturn ecb_attribute ((__noreturn__))
661#define ecb_unused ecb_attribute ((__unused__))
662#define ecb_const ecb_attribute ((__const__))
663#define ecb_pure ecb_attribute ((__pure__))
664
665#if ECB_GCC_VERSION(4,3)
666 #define ecb_artificial ecb_attribute ((__artificial__))
667 #define ecb_hot ecb_attribute ((__hot__))
668 #define ecb_cold ecb_attribute ((__cold__))
669#else
670 #define ecb_artificial
671 #define ecb_hot
672 #define ecb_cold
673#endif
674
675/* put around conditional expressions if you are very sure that the */
676/* expression is mostly true or mostly false. note that these return */
677/* booleans, not the expression. */
334#define expect_false(expr) expect ((expr) != 0, 0) 678#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
335#define expect_true(expr) expect ((expr) != 0, 1) 679#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
680/* for compatibility to the rest of the world */
681#define ecb_likely(expr) ecb_expect_true (expr)
682#define ecb_unlikely(expr) ecb_expect_false (expr)
683
684/* count trailing zero bits and count # of one bits */
685#if ECB_GCC_VERSION(3,4)
686 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
687 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
688 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
689 #define ecb_ctz32(x) __builtin_ctz (x)
690 #define ecb_ctz64(x) __builtin_ctzll (x)
691 #define ecb_popcount32(x) __builtin_popcount (x)
692 /* no popcountll */
693#else
694 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
695 ecb_function_ int
696 ecb_ctz32 (uint32_t x)
697 {
698 int r = 0;
699
700 x &= ~x + 1; /* this isolates the lowest bit */
701
702#if ECB_branchless_on_i386
703 r += !!(x & 0xaaaaaaaa) << 0;
704 r += !!(x & 0xcccccccc) << 1;
705 r += !!(x & 0xf0f0f0f0) << 2;
706 r += !!(x & 0xff00ff00) << 3;
707 r += !!(x & 0xffff0000) << 4;
708#else
709 if (x & 0xaaaaaaaa) r += 1;
710 if (x & 0xcccccccc) r += 2;
711 if (x & 0xf0f0f0f0) r += 4;
712 if (x & 0xff00ff00) r += 8;
713 if (x & 0xffff0000) r += 16;
714#endif
715
716 return r;
717 }
718
719 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
720 ecb_function_ int
721 ecb_ctz64 (uint64_t x)
722 {
723 int shift = x & 0xffffffffU ? 0 : 32;
724 return ecb_ctz32 (x >> shift) + shift;
725 }
726
727 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
728 ecb_function_ int
729 ecb_popcount32 (uint32_t x)
730 {
731 x -= (x >> 1) & 0x55555555;
732 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
733 x = ((x >> 4) + x) & 0x0f0f0f0f;
734 x *= 0x01010101;
735
736 return x >> 24;
737 }
738
739 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
740 ecb_function_ int ecb_ld32 (uint32_t x)
741 {
742 int r = 0;
743
744 if (x >> 16) { x >>= 16; r += 16; }
745 if (x >> 8) { x >>= 8; r += 8; }
746 if (x >> 4) { x >>= 4; r += 4; }
747 if (x >> 2) { x >>= 2; r += 2; }
748 if (x >> 1) { r += 1; }
749
750 return r;
751 }
752
753 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
754 ecb_function_ int ecb_ld64 (uint64_t x)
755 {
756 int r = 0;
757
758 if (x >> 32) { x >>= 32; r += 32; }
759
760 return r + ecb_ld32 (x);
761 }
762#endif
763
764/* popcount64 is only available on 64 bit cpus as gcc builtin */
765/* so for this version we are lazy */
766ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
767ecb_function_ int
768ecb_popcount64 (uint64_t x)
769{
770 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
771}
772
773ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
774ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
775ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
776ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
777ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
778ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
779ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
780ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
781
782ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
783ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
784ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
785ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
786ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
787ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
788ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
789ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
790
791#if ECB_GCC_VERSION(4,3)
792 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
793 #define ecb_bswap32(x) __builtin_bswap32 (x)
794 #define ecb_bswap64(x) __builtin_bswap64 (x)
795#else
796 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
797 ecb_function_ uint16_t
798 ecb_bswap16 (uint16_t x)
799 {
800 return ecb_rotl16 (x, 8);
801 }
802
803 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
804 ecb_function_ uint32_t
805 ecb_bswap32 (uint32_t x)
806 {
807 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
808 }
809
810 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
811 ecb_function_ uint64_t
812 ecb_bswap64 (uint64_t x)
813 {
814 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
815 }
816#endif
817
818#if ECB_GCC_VERSION(4,5)
819 #define ecb_unreachable() __builtin_unreachable ()
820#else
821 /* this seems to work fine, but gcc always emits a warning for it :/ */
822 ecb_function_ void ecb_unreachable (void) ecb_noreturn;
823 ecb_function_ void ecb_unreachable (void) { }
824#endif
825
826/* try to tell the compiler that some condition is definitely true */
827#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
828
829ecb_function_ unsigned char ecb_byteorder_helper (void) ecb_const;
830ecb_function_ unsigned char
831ecb_byteorder_helper (void)
832{
833 const uint32_t u = 0x11223344;
834 return *(unsigned char *)&u;
835}
836
837ecb_function_ ecb_bool ecb_big_endian (void) ecb_const;
838ecb_function_ ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
839ecb_function_ ecb_bool ecb_little_endian (void) ecb_const;
840ecb_function_ ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
841
842#if ECB_GCC_VERSION(3,0) || ECB_C99
843 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
844#else
845 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
846#endif
847
848#if __cplusplus
849 template<typename T>
850 static inline T ecb_div_rd (T val, T div)
851 {
852 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
853 }
854 template<typename T>
855 static inline T ecb_div_ru (T val, T div)
856 {
857 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
858 }
859#else
860 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
861 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
862#endif
863
864#if ecb_cplusplus_does_not_suck
865 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
866 template<typename T, int N>
867 static inline int ecb_array_length (const T (&arr)[N])
868 {
869 return N;
870 }
871#else
872 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
873#endif
874
875#endif
876
877/* ECB.H END */
878
879#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
880/* if your architecture doesn't need memory fences, e.g. because it is
881 * single-cpu/core, or if you use libev in a project that doesn't use libev
882 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
883 * libev, in which casess the memory fences become nops.
884 * alternatively, you can remove this #error and link against libpthread,
885 * which will then provide the memory fences.
886 */
887# error "memory fences not defined for your architecture, please report"
888#endif
889
890#ifndef ECB_MEMORY_FENCE
891# define ECB_MEMORY_FENCE do { } while (0)
892# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
893# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
894#endif
895
896#define expect_false(cond) ecb_expect_false (cond)
897#define expect_true(cond) ecb_expect_true (cond)
898#define noinline ecb_noinline
899
336#define inline_size static inline 900#define inline_size ecb_inline
337 901
338#if EV_MINIMAL 902#if EV_FEATURE_CODE
903# define inline_speed ecb_inline
904#else
339# define inline_speed static noinline 905# define inline_speed static noinline
906#endif
907
908#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
909
910#if EV_MINPRI == EV_MAXPRI
911# define ABSPRI(w) (((W)w), 0)
340#else 912#else
341# define inline_speed static inline
342#endif
343
344#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
345#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 913# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
914#endif
346 915
347#define EMPTY /* required for microsofts broken pseudo-c compiler */ 916#define EMPTY /* required for microsofts broken pseudo-c compiler */
348#define EMPTY2(a,b) /* used to suppress some warnings */ 917#define EMPTY2(a,b) /* used to suppress some warnings */
349 918
350typedef ev_watcher *W; 919typedef ev_watcher *W;
… …
352typedef ev_watcher_time *WT; 921typedef ev_watcher_time *WT;
353 922
354#define ev_active(w) ((W)(w))->active 923#define ev_active(w) ((W)(w))->active
355#define ev_at(w) ((WT)(w))->at 924#define ev_at(w) ((WT)(w))->at
356 925
926#if EV_USE_REALTIME
927/* sig_atomic_t is used to avoid per-thread variables or locking but still */
928/* giving it a reasonably high chance of working on typical architectures */
929static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
930#endif
931
357#if EV_USE_MONOTONIC 932#if EV_USE_MONOTONIC
358/* sig_atomic_t is used to avoid per-thread variables or locking but still */
359/* giving it a reasonably high chance of working on typical architetcures */
360static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 933static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
934#endif
935
936#ifndef EV_FD_TO_WIN32_HANDLE
937# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
938#endif
939#ifndef EV_WIN32_HANDLE_TO_FD
940# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
941#endif
942#ifndef EV_WIN32_CLOSE_FD
943# define EV_WIN32_CLOSE_FD(fd) close (fd)
361#endif 944#endif
362 945
363#ifdef _WIN32 946#ifdef _WIN32
364# include "ev_win32.c" 947# include "ev_win32.c"
365#endif 948#endif
366 949
367/*****************************************************************************/ 950/*****************************************************************************/
368 951
952/* define a suitable floor function (only used by periodics atm) */
953
954#if EV_USE_FLOOR
955# include <math.h>
956# define ev_floor(v) floor (v)
957#else
958
959#include <float.h>
960
961/* a floor() replacement function, should be independent of ev_tstamp type */
962static ev_tstamp noinline
963ev_floor (ev_tstamp v)
964{
965 /* the choice of shift factor is not terribly important */
966#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
967 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
968#else
969 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
970#endif
971
972 /* argument too large for an unsigned long? */
973 if (expect_false (v >= shift))
974 {
975 ev_tstamp f;
976
977 if (v == v - 1.)
978 return v; /* very large number */
979
980 f = shift * ev_floor (v * (1. / shift));
981 return f + ev_floor (v - f);
982 }
983
984 /* special treatment for negative args? */
985 if (expect_false (v < 0.))
986 {
987 ev_tstamp f = -ev_floor (-v);
988
989 return f - (f == v ? 0 : 1);
990 }
991
992 /* fits into an unsigned long */
993 return (unsigned long)v;
994}
995
996#endif
997
998/*****************************************************************************/
999
1000#ifdef __linux
1001# include <sys/utsname.h>
1002#endif
1003
1004static unsigned int noinline ecb_cold
1005ev_linux_version (void)
1006{
1007#ifdef __linux
1008 unsigned int v = 0;
1009 struct utsname buf;
1010 int i;
1011 char *p = buf.release;
1012
1013 if (uname (&buf))
1014 return 0;
1015
1016 for (i = 3+1; --i; )
1017 {
1018 unsigned int c = 0;
1019
1020 for (;;)
1021 {
1022 if (*p >= '0' && *p <= '9')
1023 c = c * 10 + *p++ - '0';
1024 else
1025 {
1026 p += *p == '.';
1027 break;
1028 }
1029 }
1030
1031 v = (v << 8) | c;
1032 }
1033
1034 return v;
1035#else
1036 return 0;
1037#endif
1038}
1039
1040/*****************************************************************************/
1041
1042#if EV_AVOID_STDIO
1043static void noinline ecb_cold
1044ev_printerr (const char *msg)
1045{
1046 write (STDERR_FILENO, msg, strlen (msg));
1047}
1048#endif
1049
369static void (*syserr_cb)(const char *msg); 1050static void (*syserr_cb)(const char *msg);
370 1051
371void 1052void ecb_cold
372ev_set_syserr_cb (void (*cb)(const char *msg)) 1053ev_set_syserr_cb (void (*cb)(const char *msg))
373{ 1054{
374 syserr_cb = cb; 1055 syserr_cb = cb;
375} 1056}
376 1057
377static void noinline 1058static void noinline ecb_cold
378syserr (const char *msg) 1059ev_syserr (const char *msg)
379{ 1060{
380 if (!msg) 1061 if (!msg)
381 msg = "(libev) system error"; 1062 msg = "(libev) system error";
382 1063
383 if (syserr_cb) 1064 if (syserr_cb)
384 syserr_cb (msg); 1065 syserr_cb (msg);
385 else 1066 else
386 { 1067 {
1068#if EV_AVOID_STDIO
1069 ev_printerr (msg);
1070 ev_printerr (": ");
1071 ev_printerr (strerror (errno));
1072 ev_printerr ("\n");
1073#else
387 perror (msg); 1074 perror (msg);
1075#endif
388 abort (); 1076 abort ();
389 } 1077 }
390} 1078}
391 1079
392static void * 1080static void *
393ev_realloc_emul (void *ptr, long size) 1081ev_realloc_emul (void *ptr, long size)
394{ 1082{
1083#if __GLIBC__
1084 return realloc (ptr, size);
1085#else
395 /* some systems, notably openbsd and darwin, fail to properly 1086 /* some systems, notably openbsd and darwin, fail to properly
396 * implement realloc (x, 0) (as required by both ansi c-98 and 1087 * implement realloc (x, 0) (as required by both ansi c-89 and
397 * the single unix specification, so work around them here. 1088 * the single unix specification, so work around them here.
398 */ 1089 */
399 1090
400 if (size) 1091 if (size)
401 return realloc (ptr, size); 1092 return realloc (ptr, size);
402 1093
403 free (ptr); 1094 free (ptr);
404 return 0; 1095 return 0;
1096#endif
405} 1097}
406 1098
407static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1099static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
408 1100
409void 1101void ecb_cold
410ev_set_allocator (void *(*cb)(void *ptr, long size)) 1102ev_set_allocator (void *(*cb)(void *ptr, long size))
411{ 1103{
412 alloc = cb; 1104 alloc = cb;
413} 1105}
414 1106
… …
417{ 1109{
418 ptr = alloc (ptr, size); 1110 ptr = alloc (ptr, size);
419 1111
420 if (!ptr && size) 1112 if (!ptr && size)
421 { 1113 {
1114#if EV_AVOID_STDIO
1115 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1116#else
422 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1117 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1118#endif
423 abort (); 1119 abort ();
424 } 1120 }
425 1121
426 return ptr; 1122 return ptr;
427} 1123}
… …
429#define ev_malloc(size) ev_realloc (0, (size)) 1125#define ev_malloc(size) ev_realloc (0, (size))
430#define ev_free(ptr) ev_realloc ((ptr), 0) 1126#define ev_free(ptr) ev_realloc ((ptr), 0)
431 1127
432/*****************************************************************************/ 1128/*****************************************************************************/
433 1129
1130/* set in reify when reification needed */
1131#define EV_ANFD_REIFY 1
1132
1133/* file descriptor info structure */
434typedef struct 1134typedef struct
435{ 1135{
436 WL head; 1136 WL head;
437 unsigned char events; 1137 unsigned char events; /* the events watched for */
1138 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
1139 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
438 unsigned char reify; 1140 unsigned char unused;
1141#if EV_USE_EPOLL
1142 unsigned int egen; /* generation counter to counter epoll bugs */
1143#endif
439#if EV_SELECT_IS_WINSOCKET 1144#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
440 SOCKET handle; 1145 SOCKET handle;
441#endif 1146#endif
1147#if EV_USE_IOCP
1148 OVERLAPPED or, ow;
1149#endif
442} ANFD; 1150} ANFD;
443 1151
1152/* stores the pending event set for a given watcher */
444typedef struct 1153typedef struct
445{ 1154{
446 W w; 1155 W w;
447 int events; 1156 int events; /* the pending event set for the given watcher */
448} ANPENDING; 1157} ANPENDING;
449 1158
450#if EV_USE_INOTIFY 1159#if EV_USE_INOTIFY
451/* hash table entry per inotify-id */ 1160/* hash table entry per inotify-id */
452typedef struct 1161typedef struct
… …
455} ANFS; 1164} ANFS;
456#endif 1165#endif
457 1166
458/* Heap Entry */ 1167/* Heap Entry */
459#if EV_HEAP_CACHE_AT 1168#if EV_HEAP_CACHE_AT
1169 /* a heap element */
460 typedef struct { 1170 typedef struct {
461 ev_tstamp at; 1171 ev_tstamp at;
462 WT w; 1172 WT w;
463 } ANHE; 1173 } ANHE;
464 1174
465 #define ANHE_w(he) (he).w /* access watcher, read-write */ 1175 #define ANHE_w(he) (he).w /* access watcher, read-write */
466 #define ANHE_at(he) (he).at /* access cached at, read-only */ 1176 #define ANHE_at(he) (he).at /* access cached at, read-only */
467 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ 1177 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
468#else 1178#else
1179 /* a heap element */
469 typedef WT ANHE; 1180 typedef WT ANHE;
470 1181
471 #define ANHE_w(he) (he) 1182 #define ANHE_w(he) (he)
472 #define ANHE_at(he) (he)->at 1183 #define ANHE_at(he) (he)->at
473 #define ANHE_at_cache(he) 1184 #define ANHE_at_cache(he)
… …
497 1208
498 static int ev_default_loop_ptr; 1209 static int ev_default_loop_ptr;
499 1210
500#endif 1211#endif
501 1212
1213#if EV_FEATURE_API
1214# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
1215# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
1216# define EV_INVOKE_PENDING invoke_cb (EV_A)
1217#else
1218# define EV_RELEASE_CB (void)0
1219# define EV_ACQUIRE_CB (void)0
1220# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
1221#endif
1222
1223#define EVBREAK_RECURSE 0x80
1224
502/*****************************************************************************/ 1225/*****************************************************************************/
503 1226
1227#ifndef EV_HAVE_EV_TIME
504ev_tstamp 1228ev_tstamp
505ev_time (void) 1229ev_time (void)
506{ 1230{
507#if EV_USE_REALTIME 1231#if EV_USE_REALTIME
1232 if (expect_true (have_realtime))
1233 {
508 struct timespec ts; 1234 struct timespec ts;
509 clock_gettime (CLOCK_REALTIME, &ts); 1235 clock_gettime (CLOCK_REALTIME, &ts);
510 return ts.tv_sec + ts.tv_nsec * 1e-9; 1236 return ts.tv_sec + ts.tv_nsec * 1e-9;
511#else 1237 }
1238#endif
1239
512 struct timeval tv; 1240 struct timeval tv;
513 gettimeofday (&tv, 0); 1241 gettimeofday (&tv, 0);
514 return tv.tv_sec + tv.tv_usec * 1e-6; 1242 return tv.tv_sec + tv.tv_usec * 1e-6;
515#endif
516} 1243}
1244#endif
517 1245
518ev_tstamp inline_size 1246inline_size ev_tstamp
519get_clock (void) 1247get_clock (void)
520{ 1248{
521#if EV_USE_MONOTONIC 1249#if EV_USE_MONOTONIC
522 if (expect_true (have_monotonic)) 1250 if (expect_true (have_monotonic))
523 { 1251 {
… …
544 if (delay > 0.) 1272 if (delay > 0.)
545 { 1273 {
546#if EV_USE_NANOSLEEP 1274#if EV_USE_NANOSLEEP
547 struct timespec ts; 1275 struct timespec ts;
548 1276
549 ts.tv_sec = (time_t)delay; 1277 EV_TS_SET (ts, delay);
550 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
551
552 nanosleep (&ts, 0); 1278 nanosleep (&ts, 0);
553#elif defined(_WIN32) 1279#elif defined(_WIN32)
554 Sleep ((unsigned long)(delay * 1e3)); 1280 Sleep ((unsigned long)(delay * 1e3));
555#else 1281#else
556 struct timeval tv; 1282 struct timeval tv;
557 1283
558 tv.tv_sec = (time_t)delay; 1284 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
559 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 1285 /* something not guaranteed by newer posix versions, but guaranteed */
560 1286 /* by older ones */
1287 EV_TV_SET (tv, delay);
561 select (0, 0, 0, 0, &tv); 1288 select (0, 0, 0, 0, &tv);
562#endif 1289#endif
563 } 1290 }
564} 1291}
565 1292
566/*****************************************************************************/ 1293/*****************************************************************************/
567 1294
568#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1295#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
569 1296
570int inline_size 1297/* find a suitable new size for the given array, */
1298/* hopefully by rounding to a nice-to-malloc size */
1299inline_size int
571array_nextsize (int elem, int cur, int cnt) 1300array_nextsize (int elem, int cur, int cnt)
572{ 1301{
573 int ncur = cur + 1; 1302 int ncur = cur + 1;
574 1303
575 do 1304 do
… …
586 } 1315 }
587 1316
588 return ncur; 1317 return ncur;
589} 1318}
590 1319
591static noinline void * 1320static void * noinline ecb_cold
592array_realloc (int elem, void *base, int *cur, int cnt) 1321array_realloc (int elem, void *base, int *cur, int cnt)
593{ 1322{
594 *cur = array_nextsize (elem, *cur, cnt); 1323 *cur = array_nextsize (elem, *cur, cnt);
595 return ev_realloc (base, elem * *cur); 1324 return ev_realloc (base, elem * *cur);
596} 1325}
1326
1327#define array_init_zero(base,count) \
1328 memset ((void *)(base), 0, sizeof (*(base)) * (count))
597 1329
598#define array_needsize(type,base,cur,cnt,init) \ 1330#define array_needsize(type,base,cur,cnt,init) \
599 if (expect_false ((cnt) > (cur))) \ 1331 if (expect_false ((cnt) > (cur))) \
600 { \ 1332 { \
601 int ocur_ = (cur); \ 1333 int ecb_unused ocur_ = (cur); \
602 (base) = (type *)array_realloc \ 1334 (base) = (type *)array_realloc \
603 (sizeof (type), (base), &(cur), (cnt)); \ 1335 (sizeof (type), (base), &(cur), (cnt)); \
604 init ((base) + (ocur_), (cur) - ocur_); \ 1336 init ((base) + (ocur_), (cur) - ocur_); \
605 } 1337 }
606 1338
… …
613 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 1345 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
614 } 1346 }
615#endif 1347#endif
616 1348
617#define array_free(stem, idx) \ 1349#define array_free(stem, idx) \
618 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 1350 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
619 1351
620/*****************************************************************************/ 1352/*****************************************************************************/
1353
1354/* dummy callback for pending events */
1355static void noinline
1356pendingcb (EV_P_ ev_prepare *w, int revents)
1357{
1358}
621 1359
622void noinline 1360void noinline
623ev_feed_event (EV_P_ void *w, int revents) 1361ev_feed_event (EV_P_ void *w, int revents)
624{ 1362{
625 W w_ = (W)w; 1363 W w_ = (W)w;
… …
634 pendings [pri][w_->pending - 1].w = w_; 1372 pendings [pri][w_->pending - 1].w = w_;
635 pendings [pri][w_->pending - 1].events = revents; 1373 pendings [pri][w_->pending - 1].events = revents;
636 } 1374 }
637} 1375}
638 1376
639void inline_speed 1377inline_speed void
1378feed_reverse (EV_P_ W w)
1379{
1380 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
1381 rfeeds [rfeedcnt++] = w;
1382}
1383
1384inline_size void
1385feed_reverse_done (EV_P_ int revents)
1386{
1387 do
1388 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
1389 while (rfeedcnt);
1390}
1391
1392inline_speed void
640queue_events (EV_P_ W *events, int eventcnt, int type) 1393queue_events (EV_P_ W *events, int eventcnt, int type)
641{ 1394{
642 int i; 1395 int i;
643 1396
644 for (i = 0; i < eventcnt; ++i) 1397 for (i = 0; i < eventcnt; ++i)
645 ev_feed_event (EV_A_ events [i], type); 1398 ev_feed_event (EV_A_ events [i], type);
646} 1399}
647 1400
648/*****************************************************************************/ 1401/*****************************************************************************/
649 1402
650void inline_size 1403inline_speed void
651anfds_init (ANFD *base, int count)
652{
653 while (count--)
654 {
655 base->head = 0;
656 base->events = EV_NONE;
657 base->reify = 0;
658
659 ++base;
660 }
661}
662
663void inline_speed
664fd_event (EV_P_ int fd, int revents) 1404fd_event_nocheck (EV_P_ int fd, int revents)
665{ 1405{
666 ANFD *anfd = anfds + fd; 1406 ANFD *anfd = anfds + fd;
667 ev_io *w; 1407 ev_io *w;
668 1408
669 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1409 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
673 if (ev) 1413 if (ev)
674 ev_feed_event (EV_A_ (W)w, ev); 1414 ev_feed_event (EV_A_ (W)w, ev);
675 } 1415 }
676} 1416}
677 1417
1418/* do not submit kernel events for fds that have reify set */
1419/* because that means they changed while we were polling for new events */
1420inline_speed void
1421fd_event (EV_P_ int fd, int revents)
1422{
1423 ANFD *anfd = anfds + fd;
1424
1425 if (expect_true (!anfd->reify))
1426 fd_event_nocheck (EV_A_ fd, revents);
1427}
1428
678void 1429void
679ev_feed_fd_event (EV_P_ int fd, int revents) 1430ev_feed_fd_event (EV_P_ int fd, int revents)
680{ 1431{
681 if (fd >= 0 && fd < anfdmax) 1432 if (fd >= 0 && fd < anfdmax)
682 fd_event (EV_A_ fd, revents); 1433 fd_event_nocheck (EV_A_ fd, revents);
683} 1434}
684 1435
685void inline_size 1436/* make sure the external fd watch events are in-sync */
1437/* with the kernel/libev internal state */
1438inline_size void
686fd_reify (EV_P) 1439fd_reify (EV_P)
687{ 1440{
688 int i; 1441 int i;
1442
1443#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1444 for (i = 0; i < fdchangecnt; ++i)
1445 {
1446 int fd = fdchanges [i];
1447 ANFD *anfd = anfds + fd;
1448
1449 if (anfd->reify & EV__IOFDSET && anfd->head)
1450 {
1451 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1452
1453 if (handle != anfd->handle)
1454 {
1455 unsigned long arg;
1456
1457 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1458
1459 /* handle changed, but fd didn't - we need to do it in two steps */
1460 backend_modify (EV_A_ fd, anfd->events, 0);
1461 anfd->events = 0;
1462 anfd->handle = handle;
1463 }
1464 }
1465 }
1466#endif
689 1467
690 for (i = 0; i < fdchangecnt; ++i) 1468 for (i = 0; i < fdchangecnt; ++i)
691 { 1469 {
692 int fd = fdchanges [i]; 1470 int fd = fdchanges [i];
693 ANFD *anfd = anfds + fd; 1471 ANFD *anfd = anfds + fd;
694 ev_io *w; 1472 ev_io *w;
695 1473
696 unsigned char events = 0; 1474 unsigned char o_events = anfd->events;
1475 unsigned char o_reify = anfd->reify;
697 1476
698 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1477 anfd->reify = 0;
699 events |= (unsigned char)w->events;
700 1478
701#if EV_SELECT_IS_WINSOCKET 1479 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
702 if (events)
703 { 1480 {
704 unsigned long argp; 1481 anfd->events = 0;
705 #ifdef EV_FD_TO_WIN32_HANDLE 1482
706 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1483 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
707 #else 1484 anfd->events |= (unsigned char)w->events;
708 anfd->handle = _get_osfhandle (fd); 1485
709 #endif 1486 if (o_events != anfd->events)
710 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 1487 o_reify = EV__IOFDSET; /* actually |= */
711 } 1488 }
712#endif
713 1489
714 { 1490 if (o_reify & EV__IOFDSET)
715 unsigned char o_events = anfd->events;
716 unsigned char o_reify = anfd->reify;
717
718 anfd->reify = 0;
719 anfd->events = events;
720
721 if (o_events != events || o_reify & EV_IOFDSET)
722 backend_modify (EV_A_ fd, o_events, events); 1491 backend_modify (EV_A_ fd, o_events, anfd->events);
723 }
724 } 1492 }
725 1493
726 fdchangecnt = 0; 1494 fdchangecnt = 0;
727} 1495}
728 1496
729void inline_size 1497/* something about the given fd changed */
1498inline_size void
730fd_change (EV_P_ int fd, int flags) 1499fd_change (EV_P_ int fd, int flags)
731{ 1500{
732 unsigned char reify = anfds [fd].reify; 1501 unsigned char reify = anfds [fd].reify;
733 anfds [fd].reify |= flags; 1502 anfds [fd].reify |= flags;
734 1503
… …
738 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1507 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
739 fdchanges [fdchangecnt - 1] = fd; 1508 fdchanges [fdchangecnt - 1] = fd;
740 } 1509 }
741} 1510}
742 1511
743void inline_speed 1512/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1513inline_speed void ecb_cold
744fd_kill (EV_P_ int fd) 1514fd_kill (EV_P_ int fd)
745{ 1515{
746 ev_io *w; 1516 ev_io *w;
747 1517
748 while ((w = (ev_io *)anfds [fd].head)) 1518 while ((w = (ev_io *)anfds [fd].head))
… …
750 ev_io_stop (EV_A_ w); 1520 ev_io_stop (EV_A_ w);
751 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1521 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
752 } 1522 }
753} 1523}
754 1524
755int inline_size 1525/* check whether the given fd is actually valid, for error recovery */
1526inline_size int ecb_cold
756fd_valid (int fd) 1527fd_valid (int fd)
757{ 1528{
758#ifdef _WIN32 1529#ifdef _WIN32
759 return _get_osfhandle (fd) != -1; 1530 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
760#else 1531#else
761 return fcntl (fd, F_GETFD) != -1; 1532 return fcntl (fd, F_GETFD) != -1;
762#endif 1533#endif
763} 1534}
764 1535
765/* called on EBADF to verify fds */ 1536/* called on EBADF to verify fds */
766static void noinline 1537static void noinline ecb_cold
767fd_ebadf (EV_P) 1538fd_ebadf (EV_P)
768{ 1539{
769 int fd; 1540 int fd;
770 1541
771 for (fd = 0; fd < anfdmax; ++fd) 1542 for (fd = 0; fd < anfdmax; ++fd)
772 if (anfds [fd].events) 1543 if (anfds [fd].events)
773 if (!fd_valid (fd) == -1 && errno == EBADF) 1544 if (!fd_valid (fd) && errno == EBADF)
774 fd_kill (EV_A_ fd); 1545 fd_kill (EV_A_ fd);
775} 1546}
776 1547
777/* called on ENOMEM in select/poll to kill some fds and retry */ 1548/* called on ENOMEM in select/poll to kill some fds and retry */
778static void noinline 1549static void noinline ecb_cold
779fd_enomem (EV_P) 1550fd_enomem (EV_P)
780{ 1551{
781 int fd; 1552 int fd;
782 1553
783 for (fd = anfdmax; fd--; ) 1554 for (fd = anfdmax; fd--; )
784 if (anfds [fd].events) 1555 if (anfds [fd].events)
785 { 1556 {
786 fd_kill (EV_A_ fd); 1557 fd_kill (EV_A_ fd);
787 return; 1558 break;
788 } 1559 }
789} 1560}
790 1561
791/* usually called after fork if backend needs to re-arm all fds from scratch */ 1562/* usually called after fork if backend needs to re-arm all fds from scratch */
792static void noinline 1563static void noinline
… …
796 1567
797 for (fd = 0; fd < anfdmax; ++fd) 1568 for (fd = 0; fd < anfdmax; ++fd)
798 if (anfds [fd].events) 1569 if (anfds [fd].events)
799 { 1570 {
800 anfds [fd].events = 0; 1571 anfds [fd].events = 0;
1572 anfds [fd].emask = 0;
801 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1573 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
802 } 1574 }
803} 1575}
804 1576
1577/* used to prepare libev internal fd's */
1578/* this is not fork-safe */
1579inline_speed void
1580fd_intern (int fd)
1581{
1582#ifdef _WIN32
1583 unsigned long arg = 1;
1584 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1585#else
1586 fcntl (fd, F_SETFD, FD_CLOEXEC);
1587 fcntl (fd, F_SETFL, O_NONBLOCK);
1588#endif
1589}
1590
805/*****************************************************************************/ 1591/*****************************************************************************/
806 1592
807/* 1593/*
808 * the heap functions want a real array index. array index 0 uis guaranteed to not 1594 * the heap functions want a real array index. array index 0 is guaranteed to not
809 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1595 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
810 * the branching factor of the d-tree. 1596 * the branching factor of the d-tree.
811 */ 1597 */
812 1598
813/* 1599/*
… …
822#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1608#define HEAP0 (DHEAP - 1) /* index of first element in heap */
823#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 1609#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
824#define UPHEAP_DONE(p,k) ((p) == (k)) 1610#define UPHEAP_DONE(p,k) ((p) == (k))
825 1611
826/* away from the root */ 1612/* away from the root */
827void inline_speed 1613inline_speed void
828downheap (ANHE *heap, int N, int k) 1614downheap (ANHE *heap, int N, int k)
829{ 1615{
830 ANHE he = heap [k]; 1616 ANHE he = heap [k];
831 ANHE *E = heap + N + HEAP0; 1617 ANHE *E = heap + N + HEAP0;
832 1618
… …
872#define HEAP0 1 1658#define HEAP0 1
873#define HPARENT(k) ((k) >> 1) 1659#define HPARENT(k) ((k) >> 1)
874#define UPHEAP_DONE(p,k) (!(p)) 1660#define UPHEAP_DONE(p,k) (!(p))
875 1661
876/* away from the root */ 1662/* away from the root */
877void inline_speed 1663inline_speed void
878downheap (ANHE *heap, int N, int k) 1664downheap (ANHE *heap, int N, int k)
879{ 1665{
880 ANHE he = heap [k]; 1666 ANHE he = heap [k];
881 1667
882 for (;;) 1668 for (;;)
883 { 1669 {
884 int c = k << 1; 1670 int c = k << 1;
885 1671
886 if (c > N + HEAP0 - 1) 1672 if (c >= N + HEAP0)
887 break; 1673 break;
888 1674
889 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1675 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
890 ? 1 : 0; 1676 ? 1 : 0;
891 1677
… …
902 ev_active (ANHE_w (he)) = k; 1688 ev_active (ANHE_w (he)) = k;
903} 1689}
904#endif 1690#endif
905 1691
906/* towards the root */ 1692/* towards the root */
907void inline_speed 1693inline_speed void
908upheap (ANHE *heap, int k) 1694upheap (ANHE *heap, int k)
909{ 1695{
910 ANHE he = heap [k]; 1696 ANHE he = heap [k];
911 1697
912 for (;;) 1698 for (;;)
… …
923 1709
924 heap [k] = he; 1710 heap [k] = he;
925 ev_active (ANHE_w (he)) = k; 1711 ev_active (ANHE_w (he)) = k;
926} 1712}
927 1713
928void inline_size 1714/* move an element suitably so it is in a correct place */
1715inline_size void
929adjustheap (ANHE *heap, int N, int k) 1716adjustheap (ANHE *heap, int N, int k)
930{ 1717{
931 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1718 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
932 upheap (heap, k); 1719 upheap (heap, k);
933 else 1720 else
934 downheap (heap, N, k); 1721 downheap (heap, N, k);
935} 1722}
936 1723
937/* rebuild the heap: this function is used only once and executed rarely */ 1724/* rebuild the heap: this function is used only once and executed rarely */
938void inline_size 1725inline_size void
939reheap (ANHE *heap, int N) 1726reheap (ANHE *heap, int N)
940{ 1727{
941 int i; 1728 int i;
942 1729
943 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ 1730 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
… …
946 upheap (heap, i + HEAP0); 1733 upheap (heap, i + HEAP0);
947} 1734}
948 1735
949/*****************************************************************************/ 1736/*****************************************************************************/
950 1737
1738/* associate signal watchers to a signal signal */
951typedef struct 1739typedef struct
952{ 1740{
1741 EV_ATOMIC_T pending;
1742#if EV_MULTIPLICITY
1743 EV_P;
1744#endif
953 WL head; 1745 WL head;
954 EV_ATOMIC_T gotsig;
955} ANSIG; 1746} ANSIG;
956 1747
957static ANSIG *signals; 1748static ANSIG signals [EV_NSIG - 1];
958static int signalmax;
959
960static EV_ATOMIC_T gotsig;
961
962void inline_size
963signals_init (ANSIG *base, int count)
964{
965 while (count--)
966 {
967 base->head = 0;
968 base->gotsig = 0;
969
970 ++base;
971 }
972}
973 1749
974/*****************************************************************************/ 1750/*****************************************************************************/
975 1751
976void inline_speed 1752#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
977fd_intern (int fd)
978{
979#ifdef _WIN32
980 int arg = 1;
981 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
982#else
983 fcntl (fd, F_SETFD, FD_CLOEXEC);
984 fcntl (fd, F_SETFL, O_NONBLOCK);
985#endif
986}
987 1753
988static void noinline 1754static void noinline ecb_cold
989evpipe_init (EV_P) 1755evpipe_init (EV_P)
990{ 1756{
991 if (!ev_is_active (&pipeev)) 1757 if (!ev_is_active (&pipe_w))
992 { 1758 {
993#if EV_USE_EVENTFD 1759# if EV_USE_EVENTFD
1760 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1761 if (evfd < 0 && errno == EINVAL)
994 if ((evfd = eventfd (0, 0)) >= 0) 1762 evfd = eventfd (0, 0);
1763
1764 if (evfd >= 0)
995 { 1765 {
996 evpipe [0] = -1; 1766 evpipe [0] = -1;
997 fd_intern (evfd); 1767 fd_intern (evfd); /* doing it twice doesn't hurt */
998 ev_io_set (&pipeev, evfd, EV_READ); 1768 ev_io_set (&pipe_w, evfd, EV_READ);
999 } 1769 }
1000 else 1770 else
1001#endif 1771# endif
1002 { 1772 {
1003 while (pipe (evpipe)) 1773 while (pipe (evpipe))
1004 syserr ("(libev) error creating signal/async pipe"); 1774 ev_syserr ("(libev) error creating signal/async pipe");
1005 1775
1006 fd_intern (evpipe [0]); 1776 fd_intern (evpipe [0]);
1007 fd_intern (evpipe [1]); 1777 fd_intern (evpipe [1]);
1008 ev_io_set (&pipeev, evpipe [0], EV_READ); 1778 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1009 } 1779 }
1010 1780
1011 ev_io_start (EV_A_ &pipeev); 1781 ev_io_start (EV_A_ &pipe_w);
1012 ev_unref (EV_A); /* watcher should not keep loop alive */ 1782 ev_unref (EV_A); /* watcher should not keep loop alive */
1013 } 1783 }
1014} 1784}
1015 1785
1016void inline_size 1786inline_speed void
1017evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1787evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1018{ 1788{
1019 if (!*flag) 1789 if (expect_true (*flag))
1790 return;
1791
1792 *flag = 1;
1793
1794 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1795
1796 pipe_write_skipped = 1;
1797
1798 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1799
1800 if (pipe_write_wanted)
1020 { 1801 {
1802 int old_errno;
1803
1804 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1805
1021 int old_errno = errno; /* save errno because write might clobber it */ 1806 old_errno = errno; /* save errno because write will clobber it */
1022
1023 *flag = 1;
1024 1807
1025#if EV_USE_EVENTFD 1808#if EV_USE_EVENTFD
1026 if (evfd >= 0) 1809 if (evfd >= 0)
1027 { 1810 {
1028 uint64_t counter = 1; 1811 uint64_t counter = 1;
1029 write (evfd, &counter, sizeof (uint64_t)); 1812 write (evfd, &counter, sizeof (uint64_t));
1030 } 1813 }
1031 else 1814 else
1032#endif 1815#endif
1816 {
1817 /* win32 people keep sending patches that change this write() to send() */
1818 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1819 /* so when you think this write should be a send instead, please find out */
1820 /* where your send() is from - it's definitely not the microsoft send, and */
1821 /* tell me. thank you. */
1033 write (evpipe [1], &old_errno, 1); 1822 write (evpipe [1], &(evpipe [1]), 1);
1823 }
1034 1824
1035 errno = old_errno; 1825 errno = old_errno;
1036 } 1826 }
1037} 1827}
1038 1828
1829/* called whenever the libev signal pipe */
1830/* got some events (signal, async) */
1039static void 1831static void
1040pipecb (EV_P_ ev_io *iow, int revents) 1832pipecb (EV_P_ ev_io *iow, int revents)
1041{ 1833{
1834 int i;
1835
1836 if (revents & EV_READ)
1837 {
1042#if EV_USE_EVENTFD 1838#if EV_USE_EVENTFD
1043 if (evfd >= 0) 1839 if (evfd >= 0)
1044 { 1840 {
1045 uint64_t counter; 1841 uint64_t counter;
1046 read (evfd, &counter, sizeof (uint64_t)); 1842 read (evfd, &counter, sizeof (uint64_t));
1047 } 1843 }
1048 else 1844 else
1049#endif 1845#endif
1050 { 1846 {
1051 char dummy; 1847 char dummy;
1848 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1052 read (evpipe [0], &dummy, 1); 1849 read (evpipe [0], &dummy, 1);
1850 }
1851 }
1852
1853 pipe_write_skipped = 0;
1854
1855#if EV_SIGNAL_ENABLE
1856 if (sig_pending)
1053 } 1857 {
1858 sig_pending = 0;
1054 1859
1055 if (gotsig && ev_is_default_loop (EV_A)) 1860 for (i = EV_NSIG - 1; i--; )
1056 { 1861 if (expect_false (signals [i].pending))
1057 int signum;
1058 gotsig = 0;
1059
1060 for (signum = signalmax; signum--; )
1061 if (signals [signum].gotsig)
1062 ev_feed_signal_event (EV_A_ signum + 1); 1862 ev_feed_signal_event (EV_A_ i + 1);
1063 } 1863 }
1864#endif
1064 1865
1065#if EV_ASYNC_ENABLE 1866#if EV_ASYNC_ENABLE
1066 if (gotasync) 1867 if (async_pending)
1067 { 1868 {
1068 int i; 1869 async_pending = 0;
1069 gotasync = 0;
1070 1870
1071 for (i = asynccnt; i--; ) 1871 for (i = asynccnt; i--; )
1072 if (asyncs [i]->sent) 1872 if (asyncs [i]->sent)
1073 { 1873 {
1074 asyncs [i]->sent = 0; 1874 asyncs [i]->sent = 0;
… …
1078#endif 1878#endif
1079} 1879}
1080 1880
1081/*****************************************************************************/ 1881/*****************************************************************************/
1082 1882
1883void
1884ev_feed_signal (int signum)
1885{
1886#if EV_MULTIPLICITY
1887 EV_P = signals [signum - 1].loop;
1888
1889 if (!EV_A)
1890 return;
1891#endif
1892
1893 if (!ev_active (&pipe_w))
1894 return;
1895
1896 signals [signum - 1].pending = 1;
1897 evpipe_write (EV_A_ &sig_pending);
1898}
1899
1083static void 1900static void
1084ev_sighandler (int signum) 1901ev_sighandler (int signum)
1085{ 1902{
1086#if EV_MULTIPLICITY
1087 struct ev_loop *loop = &default_loop_struct;
1088#endif
1089
1090#if _WIN32 1903#ifdef _WIN32
1091 signal (signum, ev_sighandler); 1904 signal (signum, ev_sighandler);
1092#endif 1905#endif
1093 1906
1094 signals [signum - 1].gotsig = 1; 1907 ev_feed_signal (signum);
1095 evpipe_write (EV_A_ &gotsig);
1096} 1908}
1097 1909
1098void noinline 1910void noinline
1099ev_feed_signal_event (EV_P_ int signum) 1911ev_feed_signal_event (EV_P_ int signum)
1100{ 1912{
1101 WL w; 1913 WL w;
1102 1914
1915 if (expect_false (signum <= 0 || signum > EV_NSIG))
1916 return;
1917
1918 --signum;
1919
1103#if EV_MULTIPLICITY 1920#if EV_MULTIPLICITY
1104 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1921 /* it is permissible to try to feed a signal to the wrong loop */
1105#endif 1922 /* or, likely more useful, feeding a signal nobody is waiting for */
1106 1923
1107 --signum; 1924 if (expect_false (signals [signum].loop != EV_A))
1108
1109 if (signum < 0 || signum >= signalmax)
1110 return; 1925 return;
1926#endif
1111 1927
1112 signals [signum].gotsig = 0; 1928 signals [signum].pending = 0;
1113 1929
1114 for (w = signals [signum].head; w; w = w->next) 1930 for (w = signals [signum].head; w; w = w->next)
1115 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1931 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1116} 1932}
1117 1933
1934#if EV_USE_SIGNALFD
1935static void
1936sigfdcb (EV_P_ ev_io *iow, int revents)
1937{
1938 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1939
1940 for (;;)
1941 {
1942 ssize_t res = read (sigfd, si, sizeof (si));
1943
1944 /* not ISO-C, as res might be -1, but works with SuS */
1945 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1946 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1947
1948 if (res < (ssize_t)sizeof (si))
1949 break;
1950 }
1951}
1952#endif
1953
1954#endif
1955
1118/*****************************************************************************/ 1956/*****************************************************************************/
1119 1957
1958#if EV_CHILD_ENABLE
1120static WL childs [EV_PID_HASHSIZE]; 1959static WL childs [EV_PID_HASHSIZE];
1121
1122#ifndef _WIN32
1123 1960
1124static ev_signal childev; 1961static ev_signal childev;
1125 1962
1126#ifndef WIFCONTINUED 1963#ifndef WIFCONTINUED
1127# define WIFCONTINUED(status) 0 1964# define WIFCONTINUED(status) 0
1128#endif 1965#endif
1129 1966
1130void inline_speed 1967/* handle a single child status event */
1968inline_speed void
1131child_reap (EV_P_ int chain, int pid, int status) 1969child_reap (EV_P_ int chain, int pid, int status)
1132{ 1970{
1133 ev_child *w; 1971 ev_child *w;
1134 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1972 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1135 1973
1136 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1974 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1137 { 1975 {
1138 if ((w->pid == pid || !w->pid) 1976 if ((w->pid == pid || !w->pid)
1139 && (!traced || (w->flags & 1))) 1977 && (!traced || (w->flags & 1)))
1140 { 1978 {
1141 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1979 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1148 1986
1149#ifndef WCONTINUED 1987#ifndef WCONTINUED
1150# define WCONTINUED 0 1988# define WCONTINUED 0
1151#endif 1989#endif
1152 1990
1991/* called on sigchld etc., calls waitpid */
1153static void 1992static void
1154childcb (EV_P_ ev_signal *sw, int revents) 1993childcb (EV_P_ ev_signal *sw, int revents)
1155{ 1994{
1156 int pid, status; 1995 int pid, status;
1157 1996
… …
1165 /* make sure we are called again until all children have been reaped */ 2004 /* make sure we are called again until all children have been reaped */
1166 /* we need to do it this way so that the callback gets called before we continue */ 2005 /* we need to do it this way so that the callback gets called before we continue */
1167 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2006 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1168 2007
1169 child_reap (EV_A_ pid, pid, status); 2008 child_reap (EV_A_ pid, pid, status);
1170 if (EV_PID_HASHSIZE > 1) 2009 if ((EV_PID_HASHSIZE) > 1)
1171 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2010 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1172} 2011}
1173 2012
1174#endif 2013#endif
1175 2014
1176/*****************************************************************************/ 2015/*****************************************************************************/
1177 2016
2017#if EV_USE_IOCP
2018# include "ev_iocp.c"
2019#endif
1178#if EV_USE_PORT 2020#if EV_USE_PORT
1179# include "ev_port.c" 2021# include "ev_port.c"
1180#endif 2022#endif
1181#if EV_USE_KQUEUE 2023#if EV_USE_KQUEUE
1182# include "ev_kqueue.c" 2024# include "ev_kqueue.c"
… …
1189#endif 2031#endif
1190#if EV_USE_SELECT 2032#if EV_USE_SELECT
1191# include "ev_select.c" 2033# include "ev_select.c"
1192#endif 2034#endif
1193 2035
1194int 2036int ecb_cold
1195ev_version_major (void) 2037ev_version_major (void)
1196{ 2038{
1197 return EV_VERSION_MAJOR; 2039 return EV_VERSION_MAJOR;
1198} 2040}
1199 2041
1200int 2042int ecb_cold
1201ev_version_minor (void) 2043ev_version_minor (void)
1202{ 2044{
1203 return EV_VERSION_MINOR; 2045 return EV_VERSION_MINOR;
1204} 2046}
1205 2047
1206/* return true if we are running with elevated privileges and should ignore env variables */ 2048/* return true if we are running with elevated privileges and should ignore env variables */
1207int inline_size 2049int inline_size ecb_cold
1208enable_secure (void) 2050enable_secure (void)
1209{ 2051{
1210#ifdef _WIN32 2052#ifdef _WIN32
1211 return 0; 2053 return 0;
1212#else 2054#else
1213 return getuid () != geteuid () 2055 return getuid () != geteuid ()
1214 || getgid () != getegid (); 2056 || getgid () != getegid ();
1215#endif 2057#endif
1216} 2058}
1217 2059
1218unsigned int 2060unsigned int ecb_cold
1219ev_supported_backends (void) 2061ev_supported_backends (void)
1220{ 2062{
1221 unsigned int flags = 0; 2063 unsigned int flags = 0;
1222 2064
1223 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2065 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1227 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2069 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1228 2070
1229 return flags; 2071 return flags;
1230} 2072}
1231 2073
1232unsigned int 2074unsigned int ecb_cold
1233ev_recommended_backends (void) 2075ev_recommended_backends (void)
1234{ 2076{
1235 unsigned int flags = ev_supported_backends (); 2077 unsigned int flags = ev_supported_backends ();
1236 2078
1237#ifndef __NetBSD__ 2079#ifndef __NetBSD__
1238 /* kqueue is borked on everything but netbsd apparently */ 2080 /* kqueue is borked on everything but netbsd apparently */
1239 /* it usually doesn't work correctly on anything but sockets and pipes */ 2081 /* it usually doesn't work correctly on anything but sockets and pipes */
1240 flags &= ~EVBACKEND_KQUEUE; 2082 flags &= ~EVBACKEND_KQUEUE;
1241#endif 2083#endif
1242#ifdef __APPLE__ 2084#ifdef __APPLE__
1243 // flags &= ~EVBACKEND_KQUEUE; for documentation 2085 /* only select works correctly on that "unix-certified" platform */
1244 flags &= ~EVBACKEND_POLL; 2086 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
2087 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
2088#endif
2089#ifdef __FreeBSD__
2090 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1245#endif 2091#endif
1246 2092
1247 return flags; 2093 return flags;
1248} 2094}
1249 2095
1250unsigned int 2096unsigned int ecb_cold
1251ev_embeddable_backends (void) 2097ev_embeddable_backends (void)
1252{ 2098{
1253 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2099 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1254 2100
1255 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2101 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1256 /* please fix it and tell me how to detect the fix */ 2102 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1257 flags &= ~EVBACKEND_EPOLL; 2103 flags &= ~EVBACKEND_EPOLL;
1258 2104
1259 return flags; 2105 return flags;
1260} 2106}
1261 2107
1262unsigned int 2108unsigned int
1263ev_backend (EV_P) 2109ev_backend (EV_P)
1264{ 2110{
1265 return backend; 2111 return backend;
1266} 2112}
1267 2113
2114#if EV_FEATURE_API
1268unsigned int 2115unsigned int
1269ev_loop_count (EV_P) 2116ev_iteration (EV_P)
1270{ 2117{
1271 return loop_count; 2118 return loop_count;
2119}
2120
2121unsigned int
2122ev_depth (EV_P)
2123{
2124 return loop_depth;
1272} 2125}
1273 2126
1274void 2127void
1275ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2128ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1276{ 2129{
… …
1281ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2134ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1282{ 2135{
1283 timeout_blocktime = interval; 2136 timeout_blocktime = interval;
1284} 2137}
1285 2138
2139void
2140ev_set_userdata (EV_P_ void *data)
2141{
2142 userdata = data;
2143}
2144
2145void *
2146ev_userdata (EV_P)
2147{
2148 return userdata;
2149}
2150
2151void
2152ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
2153{
2154 invoke_cb = invoke_pending_cb;
2155}
2156
2157void
2158ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
2159{
2160 release_cb = release;
2161 acquire_cb = acquire;
2162}
2163#endif
2164
2165/* initialise a loop structure, must be zero-initialised */
1286static void noinline 2166static void noinline ecb_cold
1287loop_init (EV_P_ unsigned int flags) 2167loop_init (EV_P_ unsigned int flags)
1288{ 2168{
1289 if (!backend) 2169 if (!backend)
1290 { 2170 {
2171 origflags = flags;
2172
2173#if EV_USE_REALTIME
2174 if (!have_realtime)
2175 {
2176 struct timespec ts;
2177
2178 if (!clock_gettime (CLOCK_REALTIME, &ts))
2179 have_realtime = 1;
2180 }
2181#endif
2182
1291#if EV_USE_MONOTONIC 2183#if EV_USE_MONOTONIC
2184 if (!have_monotonic)
1292 { 2185 {
1293 struct timespec ts; 2186 struct timespec ts;
2187
1294 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2188 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1295 have_monotonic = 1; 2189 have_monotonic = 1;
1296 } 2190 }
1297#endif
1298
1299 ev_rt_now = ev_time ();
1300 mn_now = get_clock ();
1301 now_floor = mn_now;
1302 rtmn_diff = ev_rt_now - mn_now;
1303
1304 io_blocktime = 0.;
1305 timeout_blocktime = 0.;
1306 backend = 0;
1307 backend_fd = -1;
1308 gotasync = 0;
1309#if EV_USE_INOTIFY
1310 fs_fd = -2;
1311#endif 2191#endif
1312 2192
1313 /* pid check not overridable via env */ 2193 /* pid check not overridable via env */
1314#ifndef _WIN32 2194#ifndef _WIN32
1315 if (flags & EVFLAG_FORKCHECK) 2195 if (flags & EVFLAG_FORKCHECK)
… …
1319 if (!(flags & EVFLAG_NOENV) 2199 if (!(flags & EVFLAG_NOENV)
1320 && !enable_secure () 2200 && !enable_secure ()
1321 && getenv ("LIBEV_FLAGS")) 2201 && getenv ("LIBEV_FLAGS"))
1322 flags = atoi (getenv ("LIBEV_FLAGS")); 2202 flags = atoi (getenv ("LIBEV_FLAGS"));
1323 2203
1324 if (!(flags & 0x0000ffffU)) 2204 ev_rt_now = ev_time ();
2205 mn_now = get_clock ();
2206 now_floor = mn_now;
2207 rtmn_diff = ev_rt_now - mn_now;
2208#if EV_FEATURE_API
2209 invoke_cb = ev_invoke_pending;
2210#endif
2211
2212 io_blocktime = 0.;
2213 timeout_blocktime = 0.;
2214 backend = 0;
2215 backend_fd = -1;
2216 sig_pending = 0;
2217#if EV_ASYNC_ENABLE
2218 async_pending = 0;
2219#endif
2220 pipe_write_skipped = 0;
2221 pipe_write_wanted = 0;
2222#if EV_USE_INOTIFY
2223 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2224#endif
2225#if EV_USE_SIGNALFD
2226 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2227#endif
2228
2229 if (!(flags & EVBACKEND_MASK))
1325 flags |= ev_recommended_backends (); 2230 flags |= ev_recommended_backends ();
1326 2231
2232#if EV_USE_IOCP
2233 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2234#endif
1327#if EV_USE_PORT 2235#if EV_USE_PORT
1328 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2236 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1329#endif 2237#endif
1330#if EV_USE_KQUEUE 2238#if EV_USE_KQUEUE
1331 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2239 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1338#endif 2246#endif
1339#if EV_USE_SELECT 2247#if EV_USE_SELECT
1340 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2248 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1341#endif 2249#endif
1342 2250
2251 ev_prepare_init (&pending_w, pendingcb);
2252
2253#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1343 ev_init (&pipeev, pipecb); 2254 ev_init (&pipe_w, pipecb);
1344 ev_set_priority (&pipeev, EV_MAXPRI); 2255 ev_set_priority (&pipe_w, EV_MAXPRI);
2256#endif
1345 } 2257 }
1346} 2258}
1347 2259
1348static void noinline 2260/* free up a loop structure */
2261void ecb_cold
1349loop_destroy (EV_P) 2262ev_loop_destroy (EV_P)
1350{ 2263{
1351 int i; 2264 int i;
1352 2265
2266#if EV_MULTIPLICITY
2267 /* mimic free (0) */
2268 if (!EV_A)
2269 return;
2270#endif
2271
2272#if EV_CLEANUP_ENABLE
2273 /* queue cleanup watchers (and execute them) */
2274 if (expect_false (cleanupcnt))
2275 {
2276 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2277 EV_INVOKE_PENDING;
2278 }
2279#endif
2280
2281#if EV_CHILD_ENABLE
2282 if (ev_is_active (&childev))
2283 {
2284 ev_ref (EV_A); /* child watcher */
2285 ev_signal_stop (EV_A_ &childev);
2286 }
2287#endif
2288
1353 if (ev_is_active (&pipeev)) 2289 if (ev_is_active (&pipe_w))
1354 { 2290 {
1355 ev_ref (EV_A); /* signal watcher */ 2291 /*ev_ref (EV_A);*/
1356 ev_io_stop (EV_A_ &pipeev); 2292 /*ev_io_stop (EV_A_ &pipe_w);*/
1357 2293
1358#if EV_USE_EVENTFD 2294#if EV_USE_EVENTFD
1359 if (evfd >= 0) 2295 if (evfd >= 0)
1360 close (evfd); 2296 close (evfd);
1361#endif 2297#endif
1362 2298
1363 if (evpipe [0] >= 0) 2299 if (evpipe [0] >= 0)
1364 { 2300 {
1365 close (evpipe [0]); 2301 EV_WIN32_CLOSE_FD (evpipe [0]);
1366 close (evpipe [1]); 2302 EV_WIN32_CLOSE_FD (evpipe [1]);
1367 } 2303 }
1368 } 2304 }
2305
2306#if EV_USE_SIGNALFD
2307 if (ev_is_active (&sigfd_w))
2308 close (sigfd);
2309#endif
1369 2310
1370#if EV_USE_INOTIFY 2311#if EV_USE_INOTIFY
1371 if (fs_fd >= 0) 2312 if (fs_fd >= 0)
1372 close (fs_fd); 2313 close (fs_fd);
1373#endif 2314#endif
1374 2315
1375 if (backend_fd >= 0) 2316 if (backend_fd >= 0)
1376 close (backend_fd); 2317 close (backend_fd);
1377 2318
2319#if EV_USE_IOCP
2320 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2321#endif
1378#if EV_USE_PORT 2322#if EV_USE_PORT
1379 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2323 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1380#endif 2324#endif
1381#if EV_USE_KQUEUE 2325#if EV_USE_KQUEUE
1382 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2326 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1397#if EV_IDLE_ENABLE 2341#if EV_IDLE_ENABLE
1398 array_free (idle, [i]); 2342 array_free (idle, [i]);
1399#endif 2343#endif
1400 } 2344 }
1401 2345
1402 ev_free (anfds); anfdmax = 0; 2346 ev_free (anfds); anfds = 0; anfdmax = 0;
1403 2347
1404 /* have to use the microsoft-never-gets-it-right macro */ 2348 /* have to use the microsoft-never-gets-it-right macro */
2349 array_free (rfeed, EMPTY);
1405 array_free (fdchange, EMPTY); 2350 array_free (fdchange, EMPTY);
1406 array_free (timer, EMPTY); 2351 array_free (timer, EMPTY);
1407#if EV_PERIODIC_ENABLE 2352#if EV_PERIODIC_ENABLE
1408 array_free (periodic, EMPTY); 2353 array_free (periodic, EMPTY);
1409#endif 2354#endif
1410#if EV_FORK_ENABLE 2355#if EV_FORK_ENABLE
1411 array_free (fork, EMPTY); 2356 array_free (fork, EMPTY);
1412#endif 2357#endif
2358#if EV_CLEANUP_ENABLE
2359 array_free (cleanup, EMPTY);
2360#endif
1413 array_free (prepare, EMPTY); 2361 array_free (prepare, EMPTY);
1414 array_free (check, EMPTY); 2362 array_free (check, EMPTY);
1415#if EV_ASYNC_ENABLE 2363#if EV_ASYNC_ENABLE
1416 array_free (async, EMPTY); 2364 array_free (async, EMPTY);
1417#endif 2365#endif
1418 2366
1419 backend = 0; 2367 backend = 0;
2368
2369#if EV_MULTIPLICITY
2370 if (ev_is_default_loop (EV_A))
2371#endif
2372 ev_default_loop_ptr = 0;
2373#if EV_MULTIPLICITY
2374 else
2375 ev_free (EV_A);
2376#endif
1420} 2377}
1421 2378
1422#if EV_USE_INOTIFY 2379#if EV_USE_INOTIFY
1423void inline_size infy_fork (EV_P); 2380inline_size void infy_fork (EV_P);
1424#endif 2381#endif
1425 2382
1426void inline_size 2383inline_size void
1427loop_fork (EV_P) 2384loop_fork (EV_P)
1428{ 2385{
1429#if EV_USE_PORT 2386#if EV_USE_PORT
1430 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 2387 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1431#endif 2388#endif
… …
1437#endif 2394#endif
1438#if EV_USE_INOTIFY 2395#if EV_USE_INOTIFY
1439 infy_fork (EV_A); 2396 infy_fork (EV_A);
1440#endif 2397#endif
1441 2398
1442 if (ev_is_active (&pipeev)) 2399 if (ev_is_active (&pipe_w))
1443 { 2400 {
1444 /* this "locks" the handlers against writing to the pipe */ 2401 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1445 /* while we modify the fd vars */
1446 gotsig = 1;
1447#if EV_ASYNC_ENABLE
1448 gotasync = 1;
1449#endif
1450 2402
1451 ev_ref (EV_A); 2403 ev_ref (EV_A);
1452 ev_io_stop (EV_A_ &pipeev); 2404 ev_io_stop (EV_A_ &pipe_w);
1453 2405
1454#if EV_USE_EVENTFD 2406#if EV_USE_EVENTFD
1455 if (evfd >= 0) 2407 if (evfd >= 0)
1456 close (evfd); 2408 close (evfd);
1457#endif 2409#endif
1458 2410
1459 if (evpipe [0] >= 0) 2411 if (evpipe [0] >= 0)
1460 { 2412 {
1461 close (evpipe [0]); 2413 EV_WIN32_CLOSE_FD (evpipe [0]);
1462 close (evpipe [1]); 2414 EV_WIN32_CLOSE_FD (evpipe [1]);
1463 } 2415 }
1464 2416
2417#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1465 evpipe_init (EV_A); 2418 evpipe_init (EV_A);
1466 /* now iterate over everything, in case we missed something */ 2419 /* now iterate over everything, in case we missed something */
1467 pipecb (EV_A_ &pipeev, EV_READ); 2420 pipecb (EV_A_ &pipe_w, EV_READ);
2421#endif
1468 } 2422 }
1469 2423
1470 postfork = 0; 2424 postfork = 0;
1471} 2425}
1472 2426
1473#if EV_MULTIPLICITY 2427#if EV_MULTIPLICITY
1474 2428
1475struct ev_loop * 2429struct ev_loop * ecb_cold
1476ev_loop_new (unsigned int flags) 2430ev_loop_new (unsigned int flags)
1477{ 2431{
1478 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2432 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1479 2433
1480 memset (loop, 0, sizeof (struct ev_loop)); 2434 memset (EV_A, 0, sizeof (struct ev_loop));
1481
1482 loop_init (EV_A_ flags); 2435 loop_init (EV_A_ flags);
1483 2436
1484 if (ev_backend (EV_A)) 2437 if (ev_backend (EV_A))
1485 return loop; 2438 return EV_A;
1486 2439
2440 ev_free (EV_A);
1487 return 0; 2441 return 0;
1488} 2442}
1489 2443
1490void 2444#endif /* multiplicity */
1491ev_loop_destroy (EV_P)
1492{
1493 loop_destroy (EV_A);
1494 ev_free (loop);
1495}
1496
1497void
1498ev_loop_fork (EV_P)
1499{
1500 postfork = 1; /* must be in line with ev_default_fork */
1501}
1502 2445
1503#if EV_VERIFY 2446#if EV_VERIFY
1504void noinline 2447static void noinline ecb_cold
1505verify_watcher (EV_P_ W w) 2448verify_watcher (EV_P_ W w)
1506{ 2449{
1507 assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2450 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1508 2451
1509 if (w->pending) 2452 if (w->pending)
1510 assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2453 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1511} 2454}
1512 2455
1513static void noinline 2456static void noinline ecb_cold
1514verify_heap (EV_P_ ANHE *heap, int N) 2457verify_heap (EV_P_ ANHE *heap, int N)
1515{ 2458{
1516 int i; 2459 int i;
1517 2460
1518 for (i = HEAP0; i < N + HEAP0; ++i) 2461 for (i = HEAP0; i < N + HEAP0; ++i)
1519 { 2462 {
1520 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); 2463 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1521 assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i]))); 2464 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1522 assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i])))); 2465 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1523 2466
1524 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2467 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1525 } 2468 }
1526} 2469}
1527 2470
1528static void noinline 2471static void noinline ecb_cold
1529array_verify (EV_P_ W *ws, int cnt) 2472array_verify (EV_P_ W *ws, int cnt)
1530{ 2473{
1531 while (cnt--) 2474 while (cnt--)
1532 { 2475 {
1533 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2476 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1534 verify_watcher (EV_A_ ws [cnt]); 2477 verify_watcher (EV_A_ ws [cnt]);
1535 } 2478 }
1536} 2479}
1537#endif 2480#endif
1538 2481
1539void 2482#if EV_FEATURE_API
2483void ecb_cold
1540ev_loop_verify (EV_P) 2484ev_verify (EV_P)
1541{ 2485{
1542#if EV_VERIFY 2486#if EV_VERIFY
1543 int i; 2487 int i;
1544 WL w; 2488 WL w;
1545 2489
1546 assert (activecnt >= -1); 2490 assert (activecnt >= -1);
1547 2491
1548 assert (fdchangemax >= fdchangecnt); 2492 assert (fdchangemax >= fdchangecnt);
1549 for (i = 0; i < fdchangecnt; ++i) 2493 for (i = 0; i < fdchangecnt; ++i)
1550 assert (("negative fd in fdchanges", fdchanges [i] >= 0)); 2494 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1551 2495
1552 assert (anfdmax >= 0); 2496 assert (anfdmax >= 0);
1553 for (i = 0; i < anfdmax; ++i) 2497 for (i = 0; i < anfdmax; ++i)
1554 for (w = anfds [i].head; w; w = w->next) 2498 for (w = anfds [i].head; w; w = w->next)
1555 { 2499 {
1556 verify_watcher (EV_A_ (W)w); 2500 verify_watcher (EV_A_ (W)w);
1557 assert (("inactive fd watcher on anfd list", ev_active (w) == 1)); 2501 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1558 assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2502 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1559 } 2503 }
1560 2504
1561 assert (timermax >= timercnt); 2505 assert (timermax >= timercnt);
1562 verify_heap (EV_A_ timers, timercnt); 2506 verify_heap (EV_A_ timers, timercnt);
1563 2507
… …
1568 2512
1569 for (i = NUMPRI; i--; ) 2513 for (i = NUMPRI; i--; )
1570 { 2514 {
1571 assert (pendingmax [i] >= pendingcnt [i]); 2515 assert (pendingmax [i] >= pendingcnt [i]);
1572#if EV_IDLE_ENABLE 2516#if EV_IDLE_ENABLE
2517 assert (idleall >= 0);
1573 assert (idlemax [i] >= idlecnt [i]); 2518 assert (idlemax [i] >= idlecnt [i]);
1574 array_verify (EV_A_ (W *)idles [i], idlecnt [i]); 2519 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1575#endif 2520#endif
1576 } 2521 }
1577 2522
1578#if EV_FORK_ENABLE 2523#if EV_FORK_ENABLE
1579 assert (forkmax >= forkcnt); 2524 assert (forkmax >= forkcnt);
1580 array_verify (EV_A_ (W *)forks, forkcnt); 2525 array_verify (EV_A_ (W *)forks, forkcnt);
1581#endif 2526#endif
1582 2527
2528#if EV_CLEANUP_ENABLE
2529 assert (cleanupmax >= cleanupcnt);
2530 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2531#endif
2532
1583#if EV_ASYNC_ENABLE 2533#if EV_ASYNC_ENABLE
1584 assert (asyncmax >= asynccnt); 2534 assert (asyncmax >= asynccnt);
1585 array_verify (EV_A_ (W *)asyncs, asynccnt); 2535 array_verify (EV_A_ (W *)asyncs, asynccnt);
1586#endif 2536#endif
1587 2537
2538#if EV_PREPARE_ENABLE
1588 assert (preparemax >= preparecnt); 2539 assert (preparemax >= preparecnt);
1589 array_verify (EV_A_ (W *)prepares, preparecnt); 2540 array_verify (EV_A_ (W *)prepares, preparecnt);
2541#endif
1590 2542
2543#if EV_CHECK_ENABLE
1591 assert (checkmax >= checkcnt); 2544 assert (checkmax >= checkcnt);
1592 array_verify (EV_A_ (W *)checks, checkcnt); 2545 array_verify (EV_A_ (W *)checks, checkcnt);
2546#endif
1593 2547
1594# if 0 2548# if 0
2549#if EV_CHILD_ENABLE
1595 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2550 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1596 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2551 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2552#endif
1597# endif 2553# endif
1598#endif 2554#endif
1599} 2555}
1600 2556#endif
1601#endif /* multiplicity */
1602 2557
1603#if EV_MULTIPLICITY 2558#if EV_MULTIPLICITY
1604struct ev_loop * 2559struct ev_loop * ecb_cold
1605ev_default_loop_init (unsigned int flags)
1606#else 2560#else
1607int 2561int
2562#endif
1608ev_default_loop (unsigned int flags) 2563ev_default_loop (unsigned int flags)
1609#endif
1610{ 2564{
1611 if (!ev_default_loop_ptr) 2565 if (!ev_default_loop_ptr)
1612 { 2566 {
1613#if EV_MULTIPLICITY 2567#if EV_MULTIPLICITY
1614 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2568 EV_P = ev_default_loop_ptr = &default_loop_struct;
1615#else 2569#else
1616 ev_default_loop_ptr = 1; 2570 ev_default_loop_ptr = 1;
1617#endif 2571#endif
1618 2572
1619 loop_init (EV_A_ flags); 2573 loop_init (EV_A_ flags);
1620 2574
1621 if (ev_backend (EV_A)) 2575 if (ev_backend (EV_A))
1622 { 2576 {
1623#ifndef _WIN32 2577#if EV_CHILD_ENABLE
1624 ev_signal_init (&childev, childcb, SIGCHLD); 2578 ev_signal_init (&childev, childcb, SIGCHLD);
1625 ev_set_priority (&childev, EV_MAXPRI); 2579 ev_set_priority (&childev, EV_MAXPRI);
1626 ev_signal_start (EV_A_ &childev); 2580 ev_signal_start (EV_A_ &childev);
1627 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2581 ev_unref (EV_A); /* child watcher should not keep loop alive */
1628#endif 2582#endif
… …
1633 2587
1634 return ev_default_loop_ptr; 2588 return ev_default_loop_ptr;
1635} 2589}
1636 2590
1637void 2591void
1638ev_default_destroy (void) 2592ev_loop_fork (EV_P)
1639{ 2593{
1640#if EV_MULTIPLICITY
1641 struct ev_loop *loop = ev_default_loop_ptr;
1642#endif
1643
1644#ifndef _WIN32
1645 ev_ref (EV_A); /* child watcher */
1646 ev_signal_stop (EV_A_ &childev);
1647#endif
1648
1649 loop_destroy (EV_A);
1650}
1651
1652void
1653ev_default_fork (void)
1654{
1655#if EV_MULTIPLICITY
1656 struct ev_loop *loop = ev_default_loop_ptr;
1657#endif
1658
1659 if (backend)
1660 postfork = 1; /* must be in line with ev_loop_fork */ 2594 postfork = 1; /* must be in line with ev_default_fork */
1661} 2595}
1662 2596
1663/*****************************************************************************/ 2597/*****************************************************************************/
1664 2598
1665void 2599void
1666ev_invoke (EV_P_ void *w, int revents) 2600ev_invoke (EV_P_ void *w, int revents)
1667{ 2601{
1668 EV_CB_INVOKE ((W)w, revents); 2602 EV_CB_INVOKE ((W)w, revents);
1669} 2603}
1670 2604
1671void inline_speed 2605unsigned int
1672call_pending (EV_P) 2606ev_pending_count (EV_P)
2607{
2608 int pri;
2609 unsigned int count = 0;
2610
2611 for (pri = NUMPRI; pri--; )
2612 count += pendingcnt [pri];
2613
2614 return count;
2615}
2616
2617void noinline
2618ev_invoke_pending (EV_P)
1673{ 2619{
1674 int pri; 2620 int pri;
1675 2621
1676 for (pri = NUMPRI; pri--; ) 2622 for (pri = NUMPRI; pri--; )
1677 while (pendingcnt [pri]) 2623 while (pendingcnt [pri])
1678 { 2624 {
1679 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2625 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1680 2626
1681 if (expect_true (p->w))
1682 {
1683 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1684
1685 p->w->pending = 0; 2627 p->w->pending = 0;
1686 EV_CB_INVOKE (p->w, p->events); 2628 EV_CB_INVOKE (p->w, p->events);
1687 EV_FREQUENT_CHECK; 2629 EV_FREQUENT_CHECK;
1688 }
1689 } 2630 }
1690} 2631}
1691 2632
1692#if EV_IDLE_ENABLE 2633#if EV_IDLE_ENABLE
1693void inline_size 2634/* make idle watchers pending. this handles the "call-idle */
2635/* only when higher priorities are idle" logic */
2636inline_size void
1694idle_reify (EV_P) 2637idle_reify (EV_P)
1695{ 2638{
1696 if (expect_false (idleall)) 2639 if (expect_false (idleall))
1697 { 2640 {
1698 int pri; 2641 int pri;
… …
1710 } 2653 }
1711 } 2654 }
1712} 2655}
1713#endif 2656#endif
1714 2657
1715void inline_size 2658/* make timers pending */
2659inline_size void
1716timers_reify (EV_P) 2660timers_reify (EV_P)
1717{ 2661{
1718 EV_FREQUENT_CHECK; 2662 EV_FREQUENT_CHECK;
1719 2663
1720 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 2664 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1721 { 2665 {
1722 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2666 do
1723
1724 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1725
1726 /* first reschedule or stop timer */
1727 if (w->repeat)
1728 { 2667 {
2668 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2669
2670 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2671
2672 /* first reschedule or stop timer */
2673 if (w->repeat)
2674 {
1729 ev_at (w) += w->repeat; 2675 ev_at (w) += w->repeat;
1730 if (ev_at (w) < mn_now) 2676 if (ev_at (w) < mn_now)
1731 ev_at (w) = mn_now; 2677 ev_at (w) = mn_now;
1732 2678
1733 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2679 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1734 2680
1735 ANHE_at_cache (timers [HEAP0]); 2681 ANHE_at_cache (timers [HEAP0]);
1736 downheap (timers, timercnt, HEAP0); 2682 downheap (timers, timercnt, HEAP0);
2683 }
2684 else
2685 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2686
2687 EV_FREQUENT_CHECK;
2688 feed_reverse (EV_A_ (W)w);
1737 } 2689 }
1738 else 2690 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1739 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1740 2691
1741 EV_FREQUENT_CHECK; 2692 feed_reverse_done (EV_A_ EV_TIMER);
1742 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1743 } 2693 }
1744} 2694}
1745 2695
1746#if EV_PERIODIC_ENABLE 2696#if EV_PERIODIC_ENABLE
1747void inline_size 2697
2698static void noinline
2699periodic_recalc (EV_P_ ev_periodic *w)
2700{
2701 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2702 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2703
2704 /* the above almost always errs on the low side */
2705 while (at <= ev_rt_now)
2706 {
2707 ev_tstamp nat = at + w->interval;
2708
2709 /* when resolution fails us, we use ev_rt_now */
2710 if (expect_false (nat == at))
2711 {
2712 at = ev_rt_now;
2713 break;
2714 }
2715
2716 at = nat;
2717 }
2718
2719 ev_at (w) = at;
2720}
2721
2722/* make periodics pending */
2723inline_size void
1748periodics_reify (EV_P) 2724periodics_reify (EV_P)
1749{ 2725{
1750 EV_FREQUENT_CHECK; 2726 EV_FREQUENT_CHECK;
1751 2727
1752 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2728 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1753 { 2729 {
1754 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2730 int feed_count = 0;
1755 2731
1756 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2732 do
1757
1758 /* first reschedule or stop timer */
1759 if (w->reschedule_cb)
1760 { 2733 {
2734 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2735
2736 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2737
2738 /* first reschedule or stop timer */
2739 if (w->reschedule_cb)
2740 {
1761 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2741 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1762 2742
1763 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); 2743 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1764 2744
1765 ANHE_at_cache (periodics [HEAP0]); 2745 ANHE_at_cache (periodics [HEAP0]);
1766 downheap (periodics, periodiccnt, HEAP0); 2746 downheap (periodics, periodiccnt, HEAP0);
2747 }
2748 else if (w->interval)
2749 {
2750 periodic_recalc (EV_A_ w);
2751 ANHE_at_cache (periodics [HEAP0]);
2752 downheap (periodics, periodiccnt, HEAP0);
2753 }
2754 else
2755 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2756
2757 EV_FREQUENT_CHECK;
2758 feed_reverse (EV_A_ (W)w);
1767 } 2759 }
1768 else if (w->interval) 2760 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1769 {
1770 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1771 /* if next trigger time is not sufficiently in the future, put it there */
1772 /* this might happen because of floating point inexactness */
1773 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1774 {
1775 ev_at (w) += w->interval;
1776 2761
1777 /* if interval is unreasonably low we might still have a time in the past */
1778 /* so correct this. this will make the periodic very inexact, but the user */
1779 /* has effectively asked to get triggered more often than possible */
1780 if (ev_at (w) < ev_rt_now)
1781 ev_at (w) = ev_rt_now;
1782 }
1783
1784 ANHE_at_cache (periodics [HEAP0]);
1785 downheap (periodics, periodiccnt, HEAP0);
1786 }
1787 else
1788 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1789
1790 EV_FREQUENT_CHECK;
1791 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2762 feed_reverse_done (EV_A_ EV_PERIODIC);
1792 } 2763 }
1793} 2764}
1794 2765
2766/* simply recalculate all periodics */
2767/* TODO: maybe ensure that at least one event happens when jumping forward? */
1795static void noinline 2768static void noinline ecb_cold
1796periodics_reschedule (EV_P) 2769periodics_reschedule (EV_P)
1797{ 2770{
1798 int i; 2771 int i;
1799 2772
1800 /* adjust periodics after time jump */ 2773 /* adjust periodics after time jump */
… …
1803 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2776 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1804 2777
1805 if (w->reschedule_cb) 2778 if (w->reschedule_cb)
1806 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2779 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1807 else if (w->interval) 2780 else if (w->interval)
1808 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2781 periodic_recalc (EV_A_ w);
1809 2782
1810 ANHE_at_cache (periodics [i]); 2783 ANHE_at_cache (periodics [i]);
1811 } 2784 }
1812 2785
1813 reheap (periodics, periodiccnt); 2786 reheap (periodics, periodiccnt);
1814} 2787}
1815#endif 2788#endif
1816 2789
1817void inline_speed 2790/* adjust all timers by a given offset */
2791static void noinline ecb_cold
2792timers_reschedule (EV_P_ ev_tstamp adjust)
2793{
2794 int i;
2795
2796 for (i = 0; i < timercnt; ++i)
2797 {
2798 ANHE *he = timers + i + HEAP0;
2799 ANHE_w (*he)->at += adjust;
2800 ANHE_at_cache (*he);
2801 }
2802}
2803
2804/* fetch new monotonic and realtime times from the kernel */
2805/* also detect if there was a timejump, and act accordingly */
2806inline_speed void
1818time_update (EV_P_ ev_tstamp max_block) 2807time_update (EV_P_ ev_tstamp max_block)
1819{ 2808{
1820 int i;
1821
1822#if EV_USE_MONOTONIC 2809#if EV_USE_MONOTONIC
1823 if (expect_true (have_monotonic)) 2810 if (expect_true (have_monotonic))
1824 { 2811 {
2812 int i;
1825 ev_tstamp odiff = rtmn_diff; 2813 ev_tstamp odiff = rtmn_diff;
1826 2814
1827 mn_now = get_clock (); 2815 mn_now = get_clock ();
1828 2816
1829 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2817 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1845 * doesn't hurt either as we only do this on time-jumps or 2833 * doesn't hurt either as we only do this on time-jumps or
1846 * in the unlikely event of having been preempted here. 2834 * in the unlikely event of having been preempted here.
1847 */ 2835 */
1848 for (i = 4; --i; ) 2836 for (i = 4; --i; )
1849 { 2837 {
2838 ev_tstamp diff;
1850 rtmn_diff = ev_rt_now - mn_now; 2839 rtmn_diff = ev_rt_now - mn_now;
1851 2840
2841 diff = odiff - rtmn_diff;
2842
1852 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2843 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1853 return; /* all is well */ 2844 return; /* all is well */
1854 2845
1855 ev_rt_now = ev_time (); 2846 ev_rt_now = ev_time ();
1856 mn_now = get_clock (); 2847 mn_now = get_clock ();
1857 now_floor = mn_now; 2848 now_floor = mn_now;
1858 } 2849 }
1859 2850
2851 /* no timer adjustment, as the monotonic clock doesn't jump */
2852 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1860# if EV_PERIODIC_ENABLE 2853# if EV_PERIODIC_ENABLE
1861 periodics_reschedule (EV_A); 2854 periodics_reschedule (EV_A);
1862# endif 2855# endif
1863 /* no timer adjustment, as the monotonic clock doesn't jump */
1864 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1865 } 2856 }
1866 else 2857 else
1867#endif 2858#endif
1868 { 2859 {
1869 ev_rt_now = ev_time (); 2860 ev_rt_now = ev_time ();
1870 2861
1871 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2862 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1872 { 2863 {
2864 /* adjust timers. this is easy, as the offset is the same for all of them */
2865 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1873#if EV_PERIODIC_ENABLE 2866#if EV_PERIODIC_ENABLE
1874 periodics_reschedule (EV_A); 2867 periodics_reschedule (EV_A);
1875#endif 2868#endif
1876 /* adjust timers. this is easy, as the offset is the same for all of them */
1877 for (i = 0; i < timercnt; ++i)
1878 {
1879 ANHE *he = timers + i + HEAP0;
1880 ANHE_w (*he)->at += ev_rt_now - mn_now;
1881 ANHE_at_cache (*he);
1882 }
1883 } 2869 }
1884 2870
1885 mn_now = ev_rt_now; 2871 mn_now = ev_rt_now;
1886 } 2872 }
1887} 2873}
1888 2874
1889void 2875void
1890ev_ref (EV_P)
1891{
1892 ++activecnt;
1893}
1894
1895void
1896ev_unref (EV_P)
1897{
1898 --activecnt;
1899}
1900
1901static int loop_done;
1902
1903void
1904ev_loop (EV_P_ int flags) 2876ev_run (EV_P_ int flags)
1905{ 2877{
2878#if EV_FEATURE_API
2879 ++loop_depth;
2880#endif
2881
2882 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2883
1906 loop_done = EVUNLOOP_CANCEL; 2884 loop_done = EVBREAK_CANCEL;
1907 2885
1908 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2886 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1909 2887
1910 do 2888 do
1911 { 2889 {
1912#if EV_VERIFY >= 2 2890#if EV_VERIFY >= 2
1913 ev_loop_verify (EV_A); 2891 ev_verify (EV_A);
1914#endif 2892#endif
1915 2893
1916#ifndef _WIN32 2894#ifndef _WIN32
1917 if (expect_false (curpid)) /* penalise the forking check even more */ 2895 if (expect_false (curpid)) /* penalise the forking check even more */
1918 if (expect_false (getpid () != curpid)) 2896 if (expect_false (getpid () != curpid))
… …
1926 /* we might have forked, so queue fork handlers */ 2904 /* we might have forked, so queue fork handlers */
1927 if (expect_false (postfork)) 2905 if (expect_false (postfork))
1928 if (forkcnt) 2906 if (forkcnt)
1929 { 2907 {
1930 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2908 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1931 call_pending (EV_A); 2909 EV_INVOKE_PENDING;
1932 } 2910 }
1933#endif 2911#endif
1934 2912
2913#if EV_PREPARE_ENABLE
1935 /* queue prepare watchers (and execute them) */ 2914 /* queue prepare watchers (and execute them) */
1936 if (expect_false (preparecnt)) 2915 if (expect_false (preparecnt))
1937 { 2916 {
1938 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2917 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1939 call_pending (EV_A); 2918 EV_INVOKE_PENDING;
1940 } 2919 }
2920#endif
1941 2921
1942 if (expect_false (!activecnt)) 2922 if (expect_false (loop_done))
1943 break; 2923 break;
1944 2924
1945 /* we might have forked, so reify kernel state if necessary */ 2925 /* we might have forked, so reify kernel state if necessary */
1946 if (expect_false (postfork)) 2926 if (expect_false (postfork))
1947 loop_fork (EV_A); 2927 loop_fork (EV_A);
… …
1952 /* calculate blocking time */ 2932 /* calculate blocking time */
1953 { 2933 {
1954 ev_tstamp waittime = 0.; 2934 ev_tstamp waittime = 0.;
1955 ev_tstamp sleeptime = 0.; 2935 ev_tstamp sleeptime = 0.;
1956 2936
2937 /* remember old timestamp for io_blocktime calculation */
2938 ev_tstamp prev_mn_now = mn_now;
2939
2940 /* update time to cancel out callback processing overhead */
2941 time_update (EV_A_ 1e100);
2942
2943 /* from now on, we want a pipe-wake-up */
2944 pipe_write_wanted = 1;
2945
2946 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
2947
1957 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2948 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
1958 { 2949 {
1959 /* update time to cancel out callback processing overhead */
1960 time_update (EV_A_ 1e100);
1961
1962 waittime = MAX_BLOCKTIME; 2950 waittime = MAX_BLOCKTIME;
1963 2951
1964 if (timercnt) 2952 if (timercnt)
1965 { 2953 {
1966 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2954 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
1967 if (waittime > to) waittime = to; 2955 if (waittime > to) waittime = to;
1968 } 2956 }
1969 2957
1970#if EV_PERIODIC_ENABLE 2958#if EV_PERIODIC_ENABLE
1971 if (periodiccnt) 2959 if (periodiccnt)
1972 { 2960 {
1973 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2961 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
1974 if (waittime > to) waittime = to; 2962 if (waittime > to) waittime = to;
1975 } 2963 }
1976#endif 2964#endif
1977 2965
2966 /* don't let timeouts decrease the waittime below timeout_blocktime */
1978 if (expect_false (waittime < timeout_blocktime)) 2967 if (expect_false (waittime < timeout_blocktime))
1979 waittime = timeout_blocktime; 2968 waittime = timeout_blocktime;
1980 2969
1981 sleeptime = waittime - backend_fudge; 2970 /* at this point, we NEED to wait, so we have to ensure */
2971 /* to pass a minimum nonzero value to the backend */
2972 if (expect_false (waittime < backend_mintime))
2973 waittime = backend_mintime;
1982 2974
2975 /* extra check because io_blocktime is commonly 0 */
1983 if (expect_true (sleeptime > io_blocktime)) 2976 if (expect_false (io_blocktime))
1984 sleeptime = io_blocktime;
1985
1986 if (sleeptime)
1987 { 2977 {
2978 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2979
2980 if (sleeptime > waittime - backend_mintime)
2981 sleeptime = waittime - backend_mintime;
2982
2983 if (expect_true (sleeptime > 0.))
2984 {
1988 ev_sleep (sleeptime); 2985 ev_sleep (sleeptime);
1989 waittime -= sleeptime; 2986 waittime -= sleeptime;
2987 }
1990 } 2988 }
1991 } 2989 }
1992 2990
2991#if EV_FEATURE_API
1993 ++loop_count; 2992 ++loop_count;
2993#endif
2994 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
1994 backend_poll (EV_A_ waittime); 2995 backend_poll (EV_A_ waittime);
2996 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2997
2998 pipe_write_wanted = 0; /* just an optimsiation, no fence needed */
2999
3000 if (pipe_write_skipped)
3001 {
3002 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3003 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3004 }
3005
1995 3006
1996 /* update ev_rt_now, do magic */ 3007 /* update ev_rt_now, do magic */
1997 time_update (EV_A_ waittime + sleeptime); 3008 time_update (EV_A_ waittime + sleeptime);
1998 } 3009 }
1999 3010
… …
2006#if EV_IDLE_ENABLE 3017#if EV_IDLE_ENABLE
2007 /* queue idle watchers unless other events are pending */ 3018 /* queue idle watchers unless other events are pending */
2008 idle_reify (EV_A); 3019 idle_reify (EV_A);
2009#endif 3020#endif
2010 3021
3022#if EV_CHECK_ENABLE
2011 /* queue check watchers, to be executed first */ 3023 /* queue check watchers, to be executed first */
2012 if (expect_false (checkcnt)) 3024 if (expect_false (checkcnt))
2013 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3025 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3026#endif
2014 3027
2015 call_pending (EV_A); 3028 EV_INVOKE_PENDING;
2016 } 3029 }
2017 while (expect_true ( 3030 while (expect_true (
2018 activecnt 3031 activecnt
2019 && !loop_done 3032 && !loop_done
2020 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3033 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2021 )); 3034 ));
2022 3035
2023 if (loop_done == EVUNLOOP_ONE) 3036 if (loop_done == EVBREAK_ONE)
2024 loop_done = EVUNLOOP_CANCEL; 3037 loop_done = EVBREAK_CANCEL;
3038
3039#if EV_FEATURE_API
3040 --loop_depth;
3041#endif
2025} 3042}
2026 3043
2027void 3044void
2028ev_unloop (EV_P_ int how) 3045ev_break (EV_P_ int how)
2029{ 3046{
2030 loop_done = how; 3047 loop_done = how;
2031} 3048}
2032 3049
3050void
3051ev_ref (EV_P)
3052{
3053 ++activecnt;
3054}
3055
3056void
3057ev_unref (EV_P)
3058{
3059 --activecnt;
3060}
3061
3062void
3063ev_now_update (EV_P)
3064{
3065 time_update (EV_A_ 1e100);
3066}
3067
3068void
3069ev_suspend (EV_P)
3070{
3071 ev_now_update (EV_A);
3072}
3073
3074void
3075ev_resume (EV_P)
3076{
3077 ev_tstamp mn_prev = mn_now;
3078
3079 ev_now_update (EV_A);
3080 timers_reschedule (EV_A_ mn_now - mn_prev);
3081#if EV_PERIODIC_ENABLE
3082 /* TODO: really do this? */
3083 periodics_reschedule (EV_A);
3084#endif
3085}
3086
2033/*****************************************************************************/ 3087/*****************************************************************************/
3088/* singly-linked list management, used when the expected list length is short */
2034 3089
2035void inline_size 3090inline_size void
2036wlist_add (WL *head, WL elem) 3091wlist_add (WL *head, WL elem)
2037{ 3092{
2038 elem->next = *head; 3093 elem->next = *head;
2039 *head = elem; 3094 *head = elem;
2040} 3095}
2041 3096
2042void inline_size 3097inline_size void
2043wlist_del (WL *head, WL elem) 3098wlist_del (WL *head, WL elem)
2044{ 3099{
2045 while (*head) 3100 while (*head)
2046 { 3101 {
2047 if (*head == elem) 3102 if (expect_true (*head == elem))
2048 { 3103 {
2049 *head = elem->next; 3104 *head = elem->next;
2050 return; 3105 break;
2051 } 3106 }
2052 3107
2053 head = &(*head)->next; 3108 head = &(*head)->next;
2054 } 3109 }
2055} 3110}
2056 3111
2057void inline_speed 3112/* internal, faster, version of ev_clear_pending */
3113inline_speed void
2058clear_pending (EV_P_ W w) 3114clear_pending (EV_P_ W w)
2059{ 3115{
2060 if (w->pending) 3116 if (w->pending)
2061 { 3117 {
2062 pendings [ABSPRI (w)][w->pending - 1].w = 0; 3118 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2063 w->pending = 0; 3119 w->pending = 0;
2064 } 3120 }
2065} 3121}
2066 3122
2067int 3123int
… …
2071 int pending = w_->pending; 3127 int pending = w_->pending;
2072 3128
2073 if (expect_true (pending)) 3129 if (expect_true (pending))
2074 { 3130 {
2075 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 3131 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3132 p->w = (W)&pending_w;
2076 w_->pending = 0; 3133 w_->pending = 0;
2077 p->w = 0;
2078 return p->events; 3134 return p->events;
2079 } 3135 }
2080 else 3136 else
2081 return 0; 3137 return 0;
2082} 3138}
2083 3139
2084void inline_size 3140inline_size void
2085pri_adjust (EV_P_ W w) 3141pri_adjust (EV_P_ W w)
2086{ 3142{
2087 int pri = w->priority; 3143 int pri = ev_priority (w);
2088 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 3144 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2089 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 3145 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2090 w->priority = pri; 3146 ev_set_priority (w, pri);
2091} 3147}
2092 3148
2093void inline_speed 3149inline_speed void
2094ev_start (EV_P_ W w, int active) 3150ev_start (EV_P_ W w, int active)
2095{ 3151{
2096 pri_adjust (EV_A_ w); 3152 pri_adjust (EV_A_ w);
2097 w->active = active; 3153 w->active = active;
2098 ev_ref (EV_A); 3154 ev_ref (EV_A);
2099} 3155}
2100 3156
2101void inline_size 3157inline_size void
2102ev_stop (EV_P_ W w) 3158ev_stop (EV_P_ W w)
2103{ 3159{
2104 ev_unref (EV_A); 3160 ev_unref (EV_A);
2105 w->active = 0; 3161 w->active = 0;
2106} 3162}
… …
2113 int fd = w->fd; 3169 int fd = w->fd;
2114 3170
2115 if (expect_false (ev_is_active (w))) 3171 if (expect_false (ev_is_active (w)))
2116 return; 3172 return;
2117 3173
2118 assert (("ev_io_start called with negative fd", fd >= 0)); 3174 assert (("libev: ev_io_start called with negative fd", fd >= 0));
3175 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2119 3176
2120 EV_FREQUENT_CHECK; 3177 EV_FREQUENT_CHECK;
2121 3178
2122 ev_start (EV_A_ (W)w, 1); 3179 ev_start (EV_A_ (W)w, 1);
2123 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 3180 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2124 wlist_add (&anfds[fd].head, (WL)w); 3181 wlist_add (&anfds[fd].head, (WL)w);
2125 3182
2126 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 3183 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2127 w->events &= ~EV_IOFDSET; 3184 w->events &= ~EV__IOFDSET;
2128 3185
2129 EV_FREQUENT_CHECK; 3186 EV_FREQUENT_CHECK;
2130} 3187}
2131 3188
2132void noinline 3189void noinline
… …
2134{ 3191{
2135 clear_pending (EV_A_ (W)w); 3192 clear_pending (EV_A_ (W)w);
2136 if (expect_false (!ev_is_active (w))) 3193 if (expect_false (!ev_is_active (w)))
2137 return; 3194 return;
2138 3195
2139 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 3196 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2140 3197
2141 EV_FREQUENT_CHECK; 3198 EV_FREQUENT_CHECK;
2142 3199
2143 wlist_del (&anfds[w->fd].head, (WL)w); 3200 wlist_del (&anfds[w->fd].head, (WL)w);
2144 ev_stop (EV_A_ (W)w); 3201 ev_stop (EV_A_ (W)w);
2145 3202
2146 fd_change (EV_A_ w->fd, 1); 3203 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2147 3204
2148 EV_FREQUENT_CHECK; 3205 EV_FREQUENT_CHECK;
2149} 3206}
2150 3207
2151void noinline 3208void noinline
… …
2154 if (expect_false (ev_is_active (w))) 3211 if (expect_false (ev_is_active (w)))
2155 return; 3212 return;
2156 3213
2157 ev_at (w) += mn_now; 3214 ev_at (w) += mn_now;
2158 3215
2159 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 3216 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2160 3217
2161 EV_FREQUENT_CHECK; 3218 EV_FREQUENT_CHECK;
2162 3219
2163 ++timercnt; 3220 ++timercnt;
2164 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 3221 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
… …
2167 ANHE_at_cache (timers [ev_active (w)]); 3224 ANHE_at_cache (timers [ev_active (w)]);
2168 upheap (timers, ev_active (w)); 3225 upheap (timers, ev_active (w));
2169 3226
2170 EV_FREQUENT_CHECK; 3227 EV_FREQUENT_CHECK;
2171 3228
2172 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3229 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2173} 3230}
2174 3231
2175void noinline 3232void noinline
2176ev_timer_stop (EV_P_ ev_timer *w) 3233ev_timer_stop (EV_P_ ev_timer *w)
2177{ 3234{
… …
2182 EV_FREQUENT_CHECK; 3239 EV_FREQUENT_CHECK;
2183 3240
2184 { 3241 {
2185 int active = ev_active (w); 3242 int active = ev_active (w);
2186 3243
2187 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 3244 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2188 3245
2189 --timercnt; 3246 --timercnt;
2190 3247
2191 if (expect_true (active < timercnt + HEAP0)) 3248 if (expect_true (active < timercnt + HEAP0))
2192 { 3249 {
2193 timers [active] = timers [timercnt + HEAP0]; 3250 timers [active] = timers [timercnt + HEAP0];
2194 adjustheap (timers, timercnt, active); 3251 adjustheap (timers, timercnt, active);
2195 } 3252 }
2196 } 3253 }
2197 3254
2198 EV_FREQUENT_CHECK;
2199
2200 ev_at (w) -= mn_now; 3255 ev_at (w) -= mn_now;
2201 3256
2202 ev_stop (EV_A_ (W)w); 3257 ev_stop (EV_A_ (W)w);
3258
3259 EV_FREQUENT_CHECK;
2203} 3260}
2204 3261
2205void noinline 3262void noinline
2206ev_timer_again (EV_P_ ev_timer *w) 3263ev_timer_again (EV_P_ ev_timer *w)
2207{ 3264{
… …
2225 } 3282 }
2226 3283
2227 EV_FREQUENT_CHECK; 3284 EV_FREQUENT_CHECK;
2228} 3285}
2229 3286
3287ev_tstamp
3288ev_timer_remaining (EV_P_ ev_timer *w)
3289{
3290 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3291}
3292
2230#if EV_PERIODIC_ENABLE 3293#if EV_PERIODIC_ENABLE
2231void noinline 3294void noinline
2232ev_periodic_start (EV_P_ ev_periodic *w) 3295ev_periodic_start (EV_P_ ev_periodic *w)
2233{ 3296{
2234 if (expect_false (ev_is_active (w))) 3297 if (expect_false (ev_is_active (w)))
… …
2236 3299
2237 if (w->reschedule_cb) 3300 if (w->reschedule_cb)
2238 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3301 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2239 else if (w->interval) 3302 else if (w->interval)
2240 { 3303 {
2241 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 3304 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2242 /* this formula differs from the one in periodic_reify because we do not always round up */ 3305 periodic_recalc (EV_A_ w);
2243 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2244 } 3306 }
2245 else 3307 else
2246 ev_at (w) = w->offset; 3308 ev_at (w) = w->offset;
2247 3309
2248 EV_FREQUENT_CHECK; 3310 EV_FREQUENT_CHECK;
… …
2254 ANHE_at_cache (periodics [ev_active (w)]); 3316 ANHE_at_cache (periodics [ev_active (w)]);
2255 upheap (periodics, ev_active (w)); 3317 upheap (periodics, ev_active (w));
2256 3318
2257 EV_FREQUENT_CHECK; 3319 EV_FREQUENT_CHECK;
2258 3320
2259 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3321 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2260} 3322}
2261 3323
2262void noinline 3324void noinline
2263ev_periodic_stop (EV_P_ ev_periodic *w) 3325ev_periodic_stop (EV_P_ ev_periodic *w)
2264{ 3326{
… …
2269 EV_FREQUENT_CHECK; 3331 EV_FREQUENT_CHECK;
2270 3332
2271 { 3333 {
2272 int active = ev_active (w); 3334 int active = ev_active (w);
2273 3335
2274 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 3336 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2275 3337
2276 --periodiccnt; 3338 --periodiccnt;
2277 3339
2278 if (expect_true (active < periodiccnt + HEAP0)) 3340 if (expect_true (active < periodiccnt + HEAP0))
2279 { 3341 {
2280 periodics [active] = periodics [periodiccnt + HEAP0]; 3342 periodics [active] = periodics [periodiccnt + HEAP0];
2281 adjustheap (periodics, periodiccnt, active); 3343 adjustheap (periodics, periodiccnt, active);
2282 } 3344 }
2283 } 3345 }
2284 3346
2285 EV_FREQUENT_CHECK;
2286
2287 ev_stop (EV_A_ (W)w); 3347 ev_stop (EV_A_ (W)w);
3348
3349 EV_FREQUENT_CHECK;
2288} 3350}
2289 3351
2290void noinline 3352void noinline
2291ev_periodic_again (EV_P_ ev_periodic *w) 3353ev_periodic_again (EV_P_ ev_periodic *w)
2292{ 3354{
… …
2298 3360
2299#ifndef SA_RESTART 3361#ifndef SA_RESTART
2300# define SA_RESTART 0 3362# define SA_RESTART 0
2301#endif 3363#endif
2302 3364
3365#if EV_SIGNAL_ENABLE
3366
2303void noinline 3367void noinline
2304ev_signal_start (EV_P_ ev_signal *w) 3368ev_signal_start (EV_P_ ev_signal *w)
2305{ 3369{
2306#if EV_MULTIPLICITY
2307 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2308#endif
2309 if (expect_false (ev_is_active (w))) 3370 if (expect_false (ev_is_active (w)))
2310 return; 3371 return;
2311 3372
2312 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 3373 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2313 3374
2314 evpipe_init (EV_A); 3375#if EV_MULTIPLICITY
3376 assert (("libev: a signal must not be attached to two different loops",
3377 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2315 3378
2316 EV_FREQUENT_CHECK; 3379 signals [w->signum - 1].loop = EV_A;
3380#endif
2317 3381
3382 EV_FREQUENT_CHECK;
3383
3384#if EV_USE_SIGNALFD
3385 if (sigfd == -2)
2318 { 3386 {
2319#ifndef _WIN32 3387 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2320 sigset_t full, prev; 3388 if (sigfd < 0 && errno == EINVAL)
2321 sigfillset (&full); 3389 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2322 sigprocmask (SIG_SETMASK, &full, &prev);
2323#endif
2324 3390
2325 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 3391 if (sigfd >= 0)
3392 {
3393 fd_intern (sigfd); /* doing it twice will not hurt */
2326 3394
2327#ifndef _WIN32 3395 sigemptyset (&sigfd_set);
2328 sigprocmask (SIG_SETMASK, &prev, 0); 3396
2329#endif 3397 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3398 ev_set_priority (&sigfd_w, EV_MAXPRI);
3399 ev_io_start (EV_A_ &sigfd_w);
3400 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3401 }
2330 } 3402 }
3403
3404 if (sigfd >= 0)
3405 {
3406 /* TODO: check .head */
3407 sigaddset (&sigfd_set, w->signum);
3408 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3409
3410 signalfd (sigfd, &sigfd_set, 0);
3411 }
3412#endif
2331 3413
2332 ev_start (EV_A_ (W)w, 1); 3414 ev_start (EV_A_ (W)w, 1);
2333 wlist_add (&signals [w->signum - 1].head, (WL)w); 3415 wlist_add (&signals [w->signum - 1].head, (WL)w);
2334 3416
2335 if (!((WL)w)->next) 3417 if (!((WL)w)->next)
3418# if EV_USE_SIGNALFD
3419 if (sigfd < 0) /*TODO*/
3420# endif
2336 { 3421 {
2337#if _WIN32 3422# ifdef _WIN32
3423 evpipe_init (EV_A);
3424
2338 signal (w->signum, ev_sighandler); 3425 signal (w->signum, ev_sighandler);
2339#else 3426# else
2340 struct sigaction sa; 3427 struct sigaction sa;
3428
3429 evpipe_init (EV_A);
3430
2341 sa.sa_handler = ev_sighandler; 3431 sa.sa_handler = ev_sighandler;
2342 sigfillset (&sa.sa_mask); 3432 sigfillset (&sa.sa_mask);
2343 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3433 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2344 sigaction (w->signum, &sa, 0); 3434 sigaction (w->signum, &sa, 0);
3435
3436 if (origflags & EVFLAG_NOSIGMASK)
3437 {
3438 sigemptyset (&sa.sa_mask);
3439 sigaddset (&sa.sa_mask, w->signum);
3440 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3441 }
2345#endif 3442#endif
2346 } 3443 }
2347 3444
2348 EV_FREQUENT_CHECK; 3445 EV_FREQUENT_CHECK;
2349} 3446}
2350 3447
2351void noinline 3448void noinline
… …
2359 3456
2360 wlist_del (&signals [w->signum - 1].head, (WL)w); 3457 wlist_del (&signals [w->signum - 1].head, (WL)w);
2361 ev_stop (EV_A_ (W)w); 3458 ev_stop (EV_A_ (W)w);
2362 3459
2363 if (!signals [w->signum - 1].head) 3460 if (!signals [w->signum - 1].head)
3461 {
3462#if EV_MULTIPLICITY
3463 signals [w->signum - 1].loop = 0; /* unattach from signal */
3464#endif
3465#if EV_USE_SIGNALFD
3466 if (sigfd >= 0)
3467 {
3468 sigset_t ss;
3469
3470 sigemptyset (&ss);
3471 sigaddset (&ss, w->signum);
3472 sigdelset (&sigfd_set, w->signum);
3473
3474 signalfd (sigfd, &sigfd_set, 0);
3475 sigprocmask (SIG_UNBLOCK, &ss, 0);
3476 }
3477 else
3478#endif
2364 signal (w->signum, SIG_DFL); 3479 signal (w->signum, SIG_DFL);
3480 }
2365 3481
2366 EV_FREQUENT_CHECK; 3482 EV_FREQUENT_CHECK;
2367} 3483}
3484
3485#endif
3486
3487#if EV_CHILD_ENABLE
2368 3488
2369void 3489void
2370ev_child_start (EV_P_ ev_child *w) 3490ev_child_start (EV_P_ ev_child *w)
2371{ 3491{
2372#if EV_MULTIPLICITY 3492#if EV_MULTIPLICITY
2373 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3493 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2374#endif 3494#endif
2375 if (expect_false (ev_is_active (w))) 3495 if (expect_false (ev_is_active (w)))
2376 return; 3496 return;
2377 3497
2378 EV_FREQUENT_CHECK; 3498 EV_FREQUENT_CHECK;
2379 3499
2380 ev_start (EV_A_ (W)w, 1); 3500 ev_start (EV_A_ (W)w, 1);
2381 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3501 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2382 3502
2383 EV_FREQUENT_CHECK; 3503 EV_FREQUENT_CHECK;
2384} 3504}
2385 3505
2386void 3506void
… …
2390 if (expect_false (!ev_is_active (w))) 3510 if (expect_false (!ev_is_active (w)))
2391 return; 3511 return;
2392 3512
2393 EV_FREQUENT_CHECK; 3513 EV_FREQUENT_CHECK;
2394 3514
2395 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3515 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2396 ev_stop (EV_A_ (W)w); 3516 ev_stop (EV_A_ (W)w);
2397 3517
2398 EV_FREQUENT_CHECK; 3518 EV_FREQUENT_CHECK;
2399} 3519}
3520
3521#endif
2400 3522
2401#if EV_STAT_ENABLE 3523#if EV_STAT_ENABLE
2402 3524
2403# ifdef _WIN32 3525# ifdef _WIN32
2404# undef lstat 3526# undef lstat
2405# define lstat(a,b) _stati64 (a,b) 3527# define lstat(a,b) _stati64 (a,b)
2406# endif 3528# endif
2407 3529
2408#define DEF_STAT_INTERVAL 5.0074891 3530#define DEF_STAT_INTERVAL 5.0074891
3531#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2409#define MIN_STAT_INTERVAL 0.1074891 3532#define MIN_STAT_INTERVAL 0.1074891
2410 3533
2411static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3534static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2412 3535
2413#if EV_USE_INOTIFY 3536#if EV_USE_INOTIFY
2414# define EV_INOTIFY_BUFSIZE 8192 3537
3538/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3539# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2415 3540
2416static void noinline 3541static void noinline
2417infy_add (EV_P_ ev_stat *w) 3542infy_add (EV_P_ ev_stat *w)
2418{ 3543{
2419 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); 3544 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);
2420 3545
2421 if (w->wd < 0) 3546 if (w->wd >= 0)
3547 {
3548 struct statfs sfs;
3549
3550 /* now local changes will be tracked by inotify, but remote changes won't */
3551 /* unless the filesystem is known to be local, we therefore still poll */
3552 /* also do poll on <2.6.25, but with normal frequency */
3553
3554 if (!fs_2625)
3555 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3556 else if (!statfs (w->path, &sfs)
3557 && (sfs.f_type == 0x1373 /* devfs */
3558 || sfs.f_type == 0xEF53 /* ext2/3 */
3559 || sfs.f_type == 0x3153464a /* jfs */
3560 || sfs.f_type == 0x52654973 /* reiser3 */
3561 || sfs.f_type == 0x01021994 /* tempfs */
3562 || sfs.f_type == 0x58465342 /* xfs */))
3563 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3564 else
3565 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2422 { 3566 }
2423 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 3567 else
3568 {
3569 /* can't use inotify, continue to stat */
3570 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2424 3571
2425 /* monitor some parent directory for speedup hints */ 3572 /* if path is not there, monitor some parent directory for speedup hints */
2426 /* note that exceeding the hardcoded limit is not a correctness issue, */ 3573 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2427 /* but an efficiency issue only */ 3574 /* but an efficiency issue only */
2428 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3575 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2429 { 3576 {
2430 char path [4096]; 3577 char path [4096];
2431 strcpy (path, w->path); 3578 strcpy (path, w->path);
… …
2435 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 3582 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2436 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 3583 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2437 3584
2438 char *pend = strrchr (path, '/'); 3585 char *pend = strrchr (path, '/');
2439 3586
2440 if (!pend) 3587 if (!pend || pend == path)
2441 break; /* whoops, no '/', complain to your admin */ 3588 break;
2442 3589
2443 *pend = 0; 3590 *pend = 0;
2444 w->wd = inotify_add_watch (fs_fd, path, mask); 3591 w->wd = inotify_add_watch (fs_fd, path, mask);
2445 } 3592 }
2446 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3593 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2447 } 3594 }
2448 } 3595 }
2449 else
2450 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2451 3596
2452 if (w->wd >= 0) 3597 if (w->wd >= 0)
2453 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3598 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
3599
3600 /* now re-arm timer, if required */
3601 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3602 ev_timer_again (EV_A_ &w->timer);
3603 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2454} 3604}
2455 3605
2456static void noinline 3606static void noinline
2457infy_del (EV_P_ ev_stat *w) 3607infy_del (EV_P_ ev_stat *w)
2458{ 3608{
… …
2461 3611
2462 if (wd < 0) 3612 if (wd < 0)
2463 return; 3613 return;
2464 3614
2465 w->wd = -2; 3615 w->wd = -2;
2466 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3616 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2467 wlist_del (&fs_hash [slot].head, (WL)w); 3617 wlist_del (&fs_hash [slot].head, (WL)w);
2468 3618
2469 /* remove this watcher, if others are watching it, they will rearm */ 3619 /* remove this watcher, if others are watching it, they will rearm */
2470 inotify_rm_watch (fs_fd, wd); 3620 inotify_rm_watch (fs_fd, wd);
2471} 3621}
2472 3622
2473static void noinline 3623static void noinline
2474infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3624infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2475{ 3625{
2476 if (slot < 0) 3626 if (slot < 0)
2477 /* overflow, need to check for all hahs slots */ 3627 /* overflow, need to check for all hash slots */
2478 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3628 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2479 infy_wd (EV_A_ slot, wd, ev); 3629 infy_wd (EV_A_ slot, wd, ev);
2480 else 3630 else
2481 { 3631 {
2482 WL w_; 3632 WL w_;
2483 3633
2484 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3634 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2485 { 3635 {
2486 ev_stat *w = (ev_stat *)w_; 3636 ev_stat *w = (ev_stat *)w_;
2487 w_ = w_->next; /* lets us remove this watcher and all before it */ 3637 w_ = w_->next; /* lets us remove this watcher and all before it */
2488 3638
2489 if (w->wd == wd || wd == -1) 3639 if (w->wd == wd || wd == -1)
2490 { 3640 {
2491 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3641 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2492 { 3642 {
3643 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2493 w->wd = -1; 3644 w->wd = -1;
2494 infy_add (EV_A_ w); /* re-add, no matter what */ 3645 infy_add (EV_A_ w); /* re-add, no matter what */
2495 } 3646 }
2496 3647
2497 stat_timer_cb (EV_A_ &w->timer, 0); 3648 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2502 3653
2503static void 3654static void
2504infy_cb (EV_P_ ev_io *w, int revents) 3655infy_cb (EV_P_ ev_io *w, int revents)
2505{ 3656{
2506 char buf [EV_INOTIFY_BUFSIZE]; 3657 char buf [EV_INOTIFY_BUFSIZE];
2507 struct inotify_event *ev = (struct inotify_event *)buf;
2508 int ofs; 3658 int ofs;
2509 int len = read (fs_fd, buf, sizeof (buf)); 3659 int len = read (fs_fd, buf, sizeof (buf));
2510 3660
2511 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3661 for (ofs = 0; ofs < len; )
3662 {
3663 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2512 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3664 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3665 ofs += sizeof (struct inotify_event) + ev->len;
3666 }
2513} 3667}
2514 3668
2515void inline_size 3669inline_size void ecb_cold
3670ev_check_2625 (EV_P)
3671{
3672 /* kernels < 2.6.25 are borked
3673 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3674 */
3675 if (ev_linux_version () < 0x020619)
3676 return;
3677
3678 fs_2625 = 1;
3679}
3680
3681inline_size int
3682infy_newfd (void)
3683{
3684#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3685 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3686 if (fd >= 0)
3687 return fd;
3688#endif
3689 return inotify_init ();
3690}
3691
3692inline_size void
2516infy_init (EV_P) 3693infy_init (EV_P)
2517{ 3694{
2518 if (fs_fd != -2) 3695 if (fs_fd != -2)
2519 return; 3696 return;
2520 3697
3698 fs_fd = -1;
3699
3700 ev_check_2625 (EV_A);
3701
2521 fs_fd = inotify_init (); 3702 fs_fd = infy_newfd ();
2522 3703
2523 if (fs_fd >= 0) 3704 if (fs_fd >= 0)
2524 { 3705 {
3706 fd_intern (fs_fd);
2525 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3707 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2526 ev_set_priority (&fs_w, EV_MAXPRI); 3708 ev_set_priority (&fs_w, EV_MAXPRI);
2527 ev_io_start (EV_A_ &fs_w); 3709 ev_io_start (EV_A_ &fs_w);
3710 ev_unref (EV_A);
2528 } 3711 }
2529} 3712}
2530 3713
2531void inline_size 3714inline_size void
2532infy_fork (EV_P) 3715infy_fork (EV_P)
2533{ 3716{
2534 int slot; 3717 int slot;
2535 3718
2536 if (fs_fd < 0) 3719 if (fs_fd < 0)
2537 return; 3720 return;
2538 3721
3722 ev_ref (EV_A);
3723 ev_io_stop (EV_A_ &fs_w);
2539 close (fs_fd); 3724 close (fs_fd);
2540 fs_fd = inotify_init (); 3725 fs_fd = infy_newfd ();
2541 3726
3727 if (fs_fd >= 0)
3728 {
3729 fd_intern (fs_fd);
3730 ev_io_set (&fs_w, fs_fd, EV_READ);
3731 ev_io_start (EV_A_ &fs_w);
3732 ev_unref (EV_A);
3733 }
3734
2542 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3735 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2543 { 3736 {
2544 WL w_ = fs_hash [slot].head; 3737 WL w_ = fs_hash [slot].head;
2545 fs_hash [slot].head = 0; 3738 fs_hash [slot].head = 0;
2546 3739
2547 while (w_) 3740 while (w_)
… …
2552 w->wd = -1; 3745 w->wd = -1;
2553 3746
2554 if (fs_fd >= 0) 3747 if (fs_fd >= 0)
2555 infy_add (EV_A_ w); /* re-add, no matter what */ 3748 infy_add (EV_A_ w); /* re-add, no matter what */
2556 else 3749 else
3750 {
3751 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3752 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2557 ev_timer_start (EV_A_ &w->timer); 3753 ev_timer_again (EV_A_ &w->timer);
3754 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3755 }
2558 } 3756 }
2559
2560 } 3757 }
2561} 3758}
2562 3759
3760#endif
3761
3762#ifdef _WIN32
3763# define EV_LSTAT(p,b) _stati64 (p, b)
3764#else
3765# define EV_LSTAT(p,b) lstat (p, b)
2563#endif 3766#endif
2564 3767
2565void 3768void
2566ev_stat_stat (EV_P_ ev_stat *w) 3769ev_stat_stat (EV_P_ ev_stat *w)
2567{ 3770{
… …
2574static void noinline 3777static void noinline
2575stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3778stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2576{ 3779{
2577 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3780 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2578 3781
2579 /* we copy this here each the time so that */ 3782 ev_statdata prev = w->attr;
2580 /* prev has the old value when the callback gets invoked */
2581 w->prev = w->attr;
2582 ev_stat_stat (EV_A_ w); 3783 ev_stat_stat (EV_A_ w);
2583 3784
2584 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3785 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2585 if ( 3786 if (
2586 w->prev.st_dev != w->attr.st_dev 3787 prev.st_dev != w->attr.st_dev
2587 || w->prev.st_ino != w->attr.st_ino 3788 || prev.st_ino != w->attr.st_ino
2588 || w->prev.st_mode != w->attr.st_mode 3789 || prev.st_mode != w->attr.st_mode
2589 || w->prev.st_nlink != w->attr.st_nlink 3790 || prev.st_nlink != w->attr.st_nlink
2590 || w->prev.st_uid != w->attr.st_uid 3791 || prev.st_uid != w->attr.st_uid
2591 || w->prev.st_gid != w->attr.st_gid 3792 || prev.st_gid != w->attr.st_gid
2592 || w->prev.st_rdev != w->attr.st_rdev 3793 || prev.st_rdev != w->attr.st_rdev
2593 || w->prev.st_size != w->attr.st_size 3794 || prev.st_size != w->attr.st_size
2594 || w->prev.st_atime != w->attr.st_atime 3795 || prev.st_atime != w->attr.st_atime
2595 || w->prev.st_mtime != w->attr.st_mtime 3796 || prev.st_mtime != w->attr.st_mtime
2596 || w->prev.st_ctime != w->attr.st_ctime 3797 || prev.st_ctime != w->attr.st_ctime
2597 ) { 3798 ) {
3799 /* we only update w->prev on actual differences */
3800 /* in case we test more often than invoke the callback, */
3801 /* to ensure that prev is always different to attr */
3802 w->prev = prev;
3803
2598 #if EV_USE_INOTIFY 3804 #if EV_USE_INOTIFY
3805 if (fs_fd >= 0)
3806 {
2599 infy_del (EV_A_ w); 3807 infy_del (EV_A_ w);
2600 infy_add (EV_A_ w); 3808 infy_add (EV_A_ w);
2601 ev_stat_stat (EV_A_ w); /* avoid race... */ 3809 ev_stat_stat (EV_A_ w); /* avoid race... */
3810 }
2602 #endif 3811 #endif
2603 3812
2604 ev_feed_event (EV_A_ w, EV_STAT); 3813 ev_feed_event (EV_A_ w, EV_STAT);
2605 } 3814 }
2606} 3815}
… …
2609ev_stat_start (EV_P_ ev_stat *w) 3818ev_stat_start (EV_P_ ev_stat *w)
2610{ 3819{
2611 if (expect_false (ev_is_active (w))) 3820 if (expect_false (ev_is_active (w)))
2612 return; 3821 return;
2613 3822
2614 /* since we use memcmp, we need to clear any padding data etc. */
2615 memset (&w->prev, 0, sizeof (ev_statdata));
2616 memset (&w->attr, 0, sizeof (ev_statdata));
2617
2618 ev_stat_stat (EV_A_ w); 3823 ev_stat_stat (EV_A_ w);
2619 3824
3825 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2620 if (w->interval < MIN_STAT_INTERVAL) 3826 w->interval = MIN_STAT_INTERVAL;
2621 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2622 3827
2623 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3828 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2624 ev_set_priority (&w->timer, ev_priority (w)); 3829 ev_set_priority (&w->timer, ev_priority (w));
2625 3830
2626#if EV_USE_INOTIFY 3831#if EV_USE_INOTIFY
2627 infy_init (EV_A); 3832 infy_init (EV_A);
2628 3833
2629 if (fs_fd >= 0) 3834 if (fs_fd >= 0)
2630 infy_add (EV_A_ w); 3835 infy_add (EV_A_ w);
2631 else 3836 else
2632#endif 3837#endif
3838 {
2633 ev_timer_start (EV_A_ &w->timer); 3839 ev_timer_again (EV_A_ &w->timer);
3840 ev_unref (EV_A);
3841 }
2634 3842
2635 ev_start (EV_A_ (W)w, 1); 3843 ev_start (EV_A_ (W)w, 1);
2636 3844
2637 EV_FREQUENT_CHECK; 3845 EV_FREQUENT_CHECK;
2638} 3846}
… …
2647 EV_FREQUENT_CHECK; 3855 EV_FREQUENT_CHECK;
2648 3856
2649#if EV_USE_INOTIFY 3857#if EV_USE_INOTIFY
2650 infy_del (EV_A_ w); 3858 infy_del (EV_A_ w);
2651#endif 3859#endif
3860
3861 if (ev_is_active (&w->timer))
3862 {
3863 ev_ref (EV_A);
2652 ev_timer_stop (EV_A_ &w->timer); 3864 ev_timer_stop (EV_A_ &w->timer);
3865 }
2653 3866
2654 ev_stop (EV_A_ (W)w); 3867 ev_stop (EV_A_ (W)w);
2655 3868
2656 EV_FREQUENT_CHECK; 3869 EV_FREQUENT_CHECK;
2657} 3870}
… …
2702 3915
2703 EV_FREQUENT_CHECK; 3916 EV_FREQUENT_CHECK;
2704} 3917}
2705#endif 3918#endif
2706 3919
3920#if EV_PREPARE_ENABLE
2707void 3921void
2708ev_prepare_start (EV_P_ ev_prepare *w) 3922ev_prepare_start (EV_P_ ev_prepare *w)
2709{ 3923{
2710 if (expect_false (ev_is_active (w))) 3924 if (expect_false (ev_is_active (w)))
2711 return; 3925 return;
… …
2737 3951
2738 ev_stop (EV_A_ (W)w); 3952 ev_stop (EV_A_ (W)w);
2739 3953
2740 EV_FREQUENT_CHECK; 3954 EV_FREQUENT_CHECK;
2741} 3955}
3956#endif
2742 3957
3958#if EV_CHECK_ENABLE
2743void 3959void
2744ev_check_start (EV_P_ ev_check *w) 3960ev_check_start (EV_P_ ev_check *w)
2745{ 3961{
2746 if (expect_false (ev_is_active (w))) 3962 if (expect_false (ev_is_active (w)))
2747 return; 3963 return;
… …
2773 3989
2774 ev_stop (EV_A_ (W)w); 3990 ev_stop (EV_A_ (W)w);
2775 3991
2776 EV_FREQUENT_CHECK; 3992 EV_FREQUENT_CHECK;
2777} 3993}
3994#endif
2778 3995
2779#if EV_EMBED_ENABLE 3996#if EV_EMBED_ENABLE
2780void noinline 3997void noinline
2781ev_embed_sweep (EV_P_ ev_embed *w) 3998ev_embed_sweep (EV_P_ ev_embed *w)
2782{ 3999{
2783 ev_loop (w->other, EVLOOP_NONBLOCK); 4000 ev_run (w->other, EVRUN_NOWAIT);
2784} 4001}
2785 4002
2786static void 4003static void
2787embed_io_cb (EV_P_ ev_io *io, int revents) 4004embed_io_cb (EV_P_ ev_io *io, int revents)
2788{ 4005{
2789 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4006 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2790 4007
2791 if (ev_cb (w)) 4008 if (ev_cb (w))
2792 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4009 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2793 else 4010 else
2794 ev_loop (w->other, EVLOOP_NONBLOCK); 4011 ev_run (w->other, EVRUN_NOWAIT);
2795} 4012}
2796 4013
2797static void 4014static void
2798embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4015embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2799{ 4016{
2800 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4017 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2801 4018
2802 { 4019 {
2803 struct ev_loop *loop = w->other; 4020 EV_P = w->other;
2804 4021
2805 while (fdchangecnt) 4022 while (fdchangecnt)
2806 { 4023 {
2807 fd_reify (EV_A); 4024 fd_reify (EV_A);
2808 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4025 ev_run (EV_A_ EVRUN_NOWAIT);
2809 } 4026 }
2810 } 4027 }
4028}
4029
4030static void
4031embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
4032{
4033 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
4034
4035 ev_embed_stop (EV_A_ w);
4036
4037 {
4038 EV_P = w->other;
4039
4040 ev_loop_fork (EV_A);
4041 ev_run (EV_A_ EVRUN_NOWAIT);
4042 }
4043
4044 ev_embed_start (EV_A_ w);
2811} 4045}
2812 4046
2813#if 0 4047#if 0
2814static void 4048static void
2815embed_idle_cb (EV_P_ ev_idle *idle, int revents) 4049embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2823{ 4057{
2824 if (expect_false (ev_is_active (w))) 4058 if (expect_false (ev_is_active (w)))
2825 return; 4059 return;
2826 4060
2827 { 4061 {
2828 struct ev_loop *loop = w->other; 4062 EV_P = w->other;
2829 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4063 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2830 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4064 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2831 } 4065 }
2832 4066
2833 EV_FREQUENT_CHECK; 4067 EV_FREQUENT_CHECK;
2834 4068
… …
2837 4071
2838 ev_prepare_init (&w->prepare, embed_prepare_cb); 4072 ev_prepare_init (&w->prepare, embed_prepare_cb);
2839 ev_set_priority (&w->prepare, EV_MINPRI); 4073 ev_set_priority (&w->prepare, EV_MINPRI);
2840 ev_prepare_start (EV_A_ &w->prepare); 4074 ev_prepare_start (EV_A_ &w->prepare);
2841 4075
4076 ev_fork_init (&w->fork, embed_fork_cb);
4077 ev_fork_start (EV_A_ &w->fork);
4078
2842 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 4079 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2843 4080
2844 ev_start (EV_A_ (W)w, 1); 4081 ev_start (EV_A_ (W)w, 1);
2845 4082
2846 EV_FREQUENT_CHECK; 4083 EV_FREQUENT_CHECK;
… …
2853 if (expect_false (!ev_is_active (w))) 4090 if (expect_false (!ev_is_active (w)))
2854 return; 4091 return;
2855 4092
2856 EV_FREQUENT_CHECK; 4093 EV_FREQUENT_CHECK;
2857 4094
2858 ev_io_stop (EV_A_ &w->io); 4095 ev_io_stop (EV_A_ &w->io);
2859 ev_prepare_stop (EV_A_ &w->prepare); 4096 ev_prepare_stop (EV_A_ &w->prepare);
4097 ev_fork_stop (EV_A_ &w->fork);
2860 4098
2861 ev_stop (EV_A_ (W)w); 4099 ev_stop (EV_A_ (W)w);
2862 4100
2863 EV_FREQUENT_CHECK; 4101 EV_FREQUENT_CHECK;
2864} 4102}
… …
2900 4138
2901 EV_FREQUENT_CHECK; 4139 EV_FREQUENT_CHECK;
2902} 4140}
2903#endif 4141#endif
2904 4142
4143#if EV_CLEANUP_ENABLE
4144void
4145ev_cleanup_start (EV_P_ ev_cleanup *w)
4146{
4147 if (expect_false (ev_is_active (w)))
4148 return;
4149
4150 EV_FREQUENT_CHECK;
4151
4152 ev_start (EV_A_ (W)w, ++cleanupcnt);
4153 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4154 cleanups [cleanupcnt - 1] = w;
4155
4156 /* cleanup watchers should never keep a refcount on the loop */
4157 ev_unref (EV_A);
4158 EV_FREQUENT_CHECK;
4159}
4160
4161void
4162ev_cleanup_stop (EV_P_ ev_cleanup *w)
4163{
4164 clear_pending (EV_A_ (W)w);
4165 if (expect_false (!ev_is_active (w)))
4166 return;
4167
4168 EV_FREQUENT_CHECK;
4169 ev_ref (EV_A);
4170
4171 {
4172 int active = ev_active (w);
4173
4174 cleanups [active - 1] = cleanups [--cleanupcnt];
4175 ev_active (cleanups [active - 1]) = active;
4176 }
4177
4178 ev_stop (EV_A_ (W)w);
4179
4180 EV_FREQUENT_CHECK;
4181}
4182#endif
4183
2905#if EV_ASYNC_ENABLE 4184#if EV_ASYNC_ENABLE
2906void 4185void
2907ev_async_start (EV_P_ ev_async *w) 4186ev_async_start (EV_P_ ev_async *w)
2908{ 4187{
2909 if (expect_false (ev_is_active (w))) 4188 if (expect_false (ev_is_active (w)))
2910 return; 4189 return;
2911 4190
4191 w->sent = 0;
4192
2912 evpipe_init (EV_A); 4193 evpipe_init (EV_A);
2913 4194
2914 EV_FREQUENT_CHECK; 4195 EV_FREQUENT_CHECK;
2915 4196
2916 ev_start (EV_A_ (W)w, ++asynccnt); 4197 ev_start (EV_A_ (W)w, ++asynccnt);
… …
2943 4224
2944void 4225void
2945ev_async_send (EV_P_ ev_async *w) 4226ev_async_send (EV_P_ ev_async *w)
2946{ 4227{
2947 w->sent = 1; 4228 w->sent = 1;
2948 evpipe_write (EV_A_ &gotasync); 4229 evpipe_write (EV_A_ &async_pending);
2949} 4230}
2950#endif 4231#endif
2951 4232
2952/*****************************************************************************/ 4233/*****************************************************************************/
2953 4234
… …
2963once_cb (EV_P_ struct ev_once *once, int revents) 4244once_cb (EV_P_ struct ev_once *once, int revents)
2964{ 4245{
2965 void (*cb)(int revents, void *arg) = once->cb; 4246 void (*cb)(int revents, void *arg) = once->cb;
2966 void *arg = once->arg; 4247 void *arg = once->arg;
2967 4248
2968 ev_io_stop (EV_A_ &once->io); 4249 ev_io_stop (EV_A_ &once->io);
2969 ev_timer_stop (EV_A_ &once->to); 4250 ev_timer_stop (EV_A_ &once->to);
2970 ev_free (once); 4251 ev_free (once);
2971 4252
2972 cb (revents, arg); 4253 cb (revents, arg);
2973} 4254}
2974 4255
2975static void 4256static void
2976once_cb_io (EV_P_ ev_io *w, int revents) 4257once_cb_io (EV_P_ ev_io *w, int revents)
2977{ 4258{
2978 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 4259 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
4260
4261 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2979} 4262}
2980 4263
2981static void 4264static void
2982once_cb_to (EV_P_ ev_timer *w, int revents) 4265once_cb_to (EV_P_ ev_timer *w, int revents)
2983{ 4266{
2984 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 4267 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
4268
4269 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2985} 4270}
2986 4271
2987void 4272void
2988ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4273ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2989{ 4274{
2990 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4275 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
2991 4276
2992 if (expect_false (!once)) 4277 if (expect_false (!once))
2993 { 4278 {
2994 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4279 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
2995 return; 4280 return;
2996 } 4281 }
2997 4282
2998 once->cb = cb; 4283 once->cb = cb;
2999 once->arg = arg; 4284 once->arg = arg;
… …
3011 ev_timer_set (&once->to, timeout, 0.); 4296 ev_timer_set (&once->to, timeout, 0.);
3012 ev_timer_start (EV_A_ &once->to); 4297 ev_timer_start (EV_A_ &once->to);
3013 } 4298 }
3014} 4299}
3015 4300
4301/*****************************************************************************/
4302
4303#if EV_WALK_ENABLE
4304void ecb_cold
4305ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
4306{
4307 int i, j;
4308 ev_watcher_list *wl, *wn;
4309
4310 if (types & (EV_IO | EV_EMBED))
4311 for (i = 0; i < anfdmax; ++i)
4312 for (wl = anfds [i].head; wl; )
4313 {
4314 wn = wl->next;
4315
4316#if EV_EMBED_ENABLE
4317 if (ev_cb ((ev_io *)wl) == embed_io_cb)
4318 {
4319 if (types & EV_EMBED)
4320 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
4321 }
4322 else
4323#endif
4324#if EV_USE_INOTIFY
4325 if (ev_cb ((ev_io *)wl) == infy_cb)
4326 ;
4327 else
4328#endif
4329 if ((ev_io *)wl != &pipe_w)
4330 if (types & EV_IO)
4331 cb (EV_A_ EV_IO, wl);
4332
4333 wl = wn;
4334 }
4335
4336 if (types & (EV_TIMER | EV_STAT))
4337 for (i = timercnt + HEAP0; i-- > HEAP0; )
4338#if EV_STAT_ENABLE
4339 /*TODO: timer is not always active*/
4340 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
4341 {
4342 if (types & EV_STAT)
4343 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
4344 }
4345 else
4346#endif
4347 if (types & EV_TIMER)
4348 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
4349
4350#if EV_PERIODIC_ENABLE
4351 if (types & EV_PERIODIC)
4352 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
4353 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
4354#endif
4355
4356#if EV_IDLE_ENABLE
4357 if (types & EV_IDLE)
4358 for (j = NUMPRI; j--; )
4359 for (i = idlecnt [j]; i--; )
4360 cb (EV_A_ EV_IDLE, idles [j][i]);
4361#endif
4362
4363#if EV_FORK_ENABLE
4364 if (types & EV_FORK)
4365 for (i = forkcnt; i--; )
4366 if (ev_cb (forks [i]) != embed_fork_cb)
4367 cb (EV_A_ EV_FORK, forks [i]);
4368#endif
4369
4370#if EV_ASYNC_ENABLE
4371 if (types & EV_ASYNC)
4372 for (i = asynccnt; i--; )
4373 cb (EV_A_ EV_ASYNC, asyncs [i]);
4374#endif
4375
4376#if EV_PREPARE_ENABLE
4377 if (types & EV_PREPARE)
4378 for (i = preparecnt; i--; )
4379# if EV_EMBED_ENABLE
4380 if (ev_cb (prepares [i]) != embed_prepare_cb)
4381# endif
4382 cb (EV_A_ EV_PREPARE, prepares [i]);
4383#endif
4384
4385#if EV_CHECK_ENABLE
4386 if (types & EV_CHECK)
4387 for (i = checkcnt; i--; )
4388 cb (EV_A_ EV_CHECK, checks [i]);
4389#endif
4390
4391#if EV_SIGNAL_ENABLE
4392 if (types & EV_SIGNAL)
4393 for (i = 0; i < EV_NSIG - 1; ++i)
4394 for (wl = signals [i].head; wl; )
4395 {
4396 wn = wl->next;
4397 cb (EV_A_ EV_SIGNAL, wl);
4398 wl = wn;
4399 }
4400#endif
4401
4402#if EV_CHILD_ENABLE
4403 if (types & EV_CHILD)
4404 for (i = (EV_PID_HASHSIZE); i--; )
4405 for (wl = childs [i]; wl; )
4406 {
4407 wn = wl->next;
4408 cb (EV_A_ EV_CHILD, wl);
4409 wl = wn;
4410 }
4411#endif
4412/* EV_STAT 0x00001000 /* stat data changed */
4413/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
4414}
4415#endif
4416
3016#if EV_MULTIPLICITY 4417#if EV_MULTIPLICITY
3017 #include "ev_wrap.h" 4418 #include "ev_wrap.h"
3018#endif 4419#endif
3019 4420
3020#ifdef __cplusplus 4421EV_CPP(})
3021}
3022#endif
3023 4422

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